[linux] 01/01: [rt] Update to 4.9.6-rt4
debian-kernel at lists.debian.org
debian-kernel at lists.debian.org
Tue Feb 7 00:56:06 UTC 2017
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benh pushed a commit to branch sid
in repository linux.
commit a6f6ce057f0ad04b2a0e2019b6469e73d6188676
Author: Ben Hutchings <ben at decadent.org.uk>
Date: Tue Feb 7 00:55:55 2017 +0000
[rt] Update to 4.9.6-rt4
---
debian/changelog | 8 +
...irq-in-translation-section-permission-fau.patch | 2 +-
...CK-printk-drop-the-logbuf_lock-more-often.patch | 2 +-
...64-downgrade-preempt_disable-d-region-to-.patch | 2 +-
...lapic-mark-LAPIC-timer-handler-as-irqsafe.patch | 2 +-
...NFSv4-replace-seqcount_t-with-a-seqlock_t.patch | 2 +-
...vert-acpi_gbl_hardware-lock-back-to-a-raw.patch | 2 +-
.../rt/arch-arm64-Add-lazy-preempt-support.patch | 2 +-
...t-remove-irq-handler-when-clock-is-unused.patch | 2 +-
...-at91-tclib-default-to-tclib-timer-for-rt.patch | 2 +-
.../all/rt/arm-convert-boot-lock-to-raw.patch | 2 +-
.../all/rt/arm-enable-highmem-for-rt.patch | 2 +-
.../all/rt/arm-highmem-flush-tlb-on-unmap.patch | 2 +-
.../rt/arm-include-definition-for-cpumask_t.patch | 2 +-
...arm-kprobe-replace-patch_lock-to-raw-lock.patch | 2 +-
.../features/all/rt/arm-preempt-lazy-support.patch | 2 +-
.../features/all/rt/arm-unwind-use_raw_lock.patch | 2 +-
.../rt/arm64-xen--Make-XEN-depend-on-non-rt.patch | 2 +-
.../all/rt/at91_dont_enable_disable_clock.patch | 2 +-
.../all/rt/ata-disable-interrupts-if-non-rt.patch | 2 +-
.../features/all/rt/block-blk-mq-use-swait.patch | 2 +-
.../block-mq-don-t-complete-requests-via-IPI.patch | 2 +-
.../all/rt/block-mq-drop-preempt-disable.patch | 4 +-
.../features/all/rt/block-mq-use-cpu_light.patch | 2 +-
.../block-shorten-interrupt-disabled-regions.patch | 2 +-
.../features/all/rt/block-use-cpu-chill.patch | 2 +-
...-free-and-trace-point-in-run_ordered_work.patch | 34 ---
.../all/rt/bug-rt-dependend-variants.patch | 2 +-
...ps-scheduling-while-atomic-in-cgroup-code.patch | 14 +-
.../cgroups-use-simple-wait-in-css_release.patch | 2 +-
...-drivers-timer-atmel-pit-fix-double-free_.patch | 2 +-
...clocksource-tclib-allow-higher-clockrates.patch | 2 +-
.../all/rt/completion-use-simple-wait-queues.patch | 2 +-
.../all/rt/cond-resched-lock-rt-tweak.patch | 2 +-
.../features/all/rt/cond-resched-softirq-rt.patch | 4 +-
...n_proc-Protect-send_msg-with-a-local-lock.patch | 2 +-
...g-Document-why-PREEMPT_RT-uses-a-spinlock.patch | 2 +-
...ke-hotplug-lock-a-sleeping-spinlock-on-rt.patch | 2 +-
.../features/all/rt/cpu-rt-rework-cpu-down.patch | 6 +-
...l-Add-a-UNINTERRUPTIBLE-hrtimer_nanosleep.patch | 2 +-
.../all/rt/cpu_down_move_migrate_enable_back.patch | 2 +-
...req-drop-K8-s-driver-from-beeing-selected.patch | 2 +-
.../all/rt/cpumask-disable-offstack-on-rt.patch | 2 +-
...t-Convert-callback_lock-to-raw_spinlock_t.patch | 287 +++++++++++++++++++++
...educe-preempt-disabled-regions-more-algos.patch | 2 +-
.../patches/features/all/rt/debugobjects-rt.patch | 2 +-
.../patches/features/all/rt/dm-make-rt-aware.patch | 4 +-
...ck-zram-Replace-bit-spinlocks-with-rtmute.patch | 18 +-
.../rt/drivers-net-8139-disable-irq-nosync.patch | 2 +-
.../rt/drivers-net-vortex-fix-locking-issues.patch | 2 +-
...ers-random-reduce-preempt-disabled-region.patch | 2 +-
.../all/rt/drivers-tty-fix-omap-lock-crap.patch | 2 +-
.../rt/drivers-tty-pl011-irq-disable-madness.patch | 2 +-
...m-Don-t-disable-preemption-in-zcomp_strea.patch | 6 +-
...15-drop-trace_i915_gem_ring_dispatch-onrt.patch | 2 +-
...ock_irq()_in_intel_pipe_update_startend().patch | 2 +-
...empt_disableenable_rt()_where_recommended.patch | 2 +-
.../features/all/rt/epoll-use-get-cpu-light.patch | 2 +-
.../all/rt/fs-aio-simple-simple-work.patch | 2 +-
.../features/all/rt/fs-block-rt-support.patch | 2 +-
.../features/all/rt/fs-dcache-include-wait.h.patch | 2 +-
.../rt/fs-dcache-init-in_lookup_hashtable.patch | 4 +-
.../fs-dcache-use-cpu-chill-in-trylock-loops.patch | 4 +-
...ache-use-swait_queue-instead-of-waitqueue.patch | 8 +-
.../all/rt/fs-jbd-replace-bh_state-lock.patch | 2 +-
...bd2-pull-your-plug-when-waiting-for-space.patch | 2 +-
.../all/rt/fs-namespace-preemption-fix.patch | 2 +-
.../fs-nfs-turn-rmdir_sem-into-a-semaphore.patch | 6 +-
.../all/rt/fs-ntfs-disable-interrupt-non-rt.patch | 2 +-
.../rt/fs-replace-bh_uptodate_lock-for-rt.patch | 2 +-
.../all/rt/ftrace-Fix-trace-header-alignment.patch | 2 +-
.../all/rt/ftrace-migrate-disable-tracing.patch | 2 +-
...e-lock-unlock-symetry-versus-pi_lock-and-.patch | 2 +-
.../features/all/rt/futex-requeue-pi-fix.patch | 2 +-
.../all/rt/genirq-disable-irqpoll-on-rt.patch | 2 +-
...ot-invoke-the-affinity-callback-via-a-wor.patch | 2 +-
.../features/all/rt/genirq-force-threading.patch | 2 +-
...pdate-irq_set_irqchip_state-documentation.patch | 2 +-
.../rt/gpu_don_t_check_for_the_lock_owner.patch | 2 +-
...-set_cpus_allowed_ptr-in-sync_unplug_thre.patch | 2 +-
.../all/rt/hotplug-light-get-online-cpus.patch | 8 +-
...lug-sync_unplug-no-27-5cn-27-in-task-name.patch | 2 +-
.../all/rt/hotplug-use-migrate-disable.patch | 2 +-
...-Move-schedule_work-call-to-helper-thread.patch | 2 +-
.../all/rt/hrtimer-enfore-64byte-alignment.patch | 2 +-
...up-hrtimer-callback-changes-for-preempt-r.patch | 4 +-
.../all/rt/hrtimers-prepare-full-preemption.patch | 2 +-
...warning-from-i915-when-running-on-PREEMPT.patch | 4 +-
.../all/rt/ide-use-nort-local-irq-variants.patch | 2 +-
.../all/rt/idr-use-local-lock-for-protection.patch | 2 +-
.../rt/infiniband-mellanox-ib-use-nort-irq.patch | 6 +-
.../all/rt/inpt-gameport-use-local-irq-nort.patch | 2 +-
.../rt/introduce_migrate_disable_cpu_light.patch | 8 +-
.../all/rt/iommu-amd--Use-WARN_ON_NORT.patch | 2 +-
...don-t-disable-preempt-around-this_cpu_ptr.patch | 2 +-
...don-t-disable-preemption-while-accessing-.patch | 6 +-
.../all/rt/ipc-sem-rework-semaphore-wakeups.patch | 2 +-
...-softirq-processing-in-irq-thread-context.patch | 2 +-
...irqwork-Move-irq-safe-work-to-irq-context.patch | 2 +-
...qwork-push_most_work_into_softirq_context.patch | 2 +-
debian/patches/features/all/rt/jump-label-rt.patch | 2 +-
.../all/rt/kconfig-disable-a-few-options-rt.patch | 2 +-
.../features/all/rt/kconfig-preempt-rt-full.patch | 2 +-
.../kernel-SRCU-provide-a-static-initializer.patch | 2 +-
...fix-cpu-down-problem-if-kthread-s-cpu-is-.patch | 2 +-
.../rt/kernel-futex-don-t-deboost-too-early.patch | 2 +-
...plug-restore-original-cpu-mask-oncpu-down.patch | 2 +-
...ate_disable-do-fastpath-in-atomic-irqs-of.patch | 2 +-
...-mark-perf_cpu_context-s-timer-as-irqsafe.patch | 2 +-
...tk-Don-t-try-to-print-from-IRQ-NMI-region.patch | 2 +-
...d-move-stack-kprobe-clean-up-to-__put_tas.patch | 2 +-
.../rt/kernel-softirq-unlock-with-irqs-on.patch | 2 +-
.../features/all/rt/kgb-serial-hackaround.patch | 2 +-
debian/patches/features/all/rt/latency-hist.patch | 4 +-
.../latency_hist-update-sched_wakeup-probe.patch | 2 +-
.../all/rt/latencyhist-disable-jump-labels.patch | 2 +-
.../leds-trigger-disable-CPU-trigger-on-RT.patch | 2 +-
.../rt/list_bl-fixup-bogus-lockdep-warning.patch | 2 +-
.../list_bl.h-make-list-head-locking-RT-safe.patch | 2 +-
.../all/rt/local-irq-rt-depending-variants.patch | 2 +-
.../all/rt/locallock-add-local_lock_on.patch | 2 +-
debian/patches/features/all/rt/localversion.patch | 4 +-
.../rt/lockdep-no-softirq-accounting-on-rt.patch | 2 +-
...ftest-fix-warnings-due-to-missing-PREEMPT.patch | 2 +-
...-do-hardirq-context-test-for-raw-spinlock.patch | 2 +-
...ktorture-Do-NOT-include-rwlock.h-directly.patch | 2 +-
...cpu-rwsem-use-swait-for-the-wating-writer.patch | 2 +-
.../features/all/rt/md-disable-bcache.patch | 2 +-
.../all/rt/md-raid5-percpu-handling-rt-aware.patch | 2 +-
.../all/rt/mips-disable-highmem-on-rt.patch | 2 +-
.../mm--rt--Fix-generic-kmap_atomic-for-RT.patch | 2 +-
...dev-don-t-disable-IRQs-in-wb_congested_pu.patch | 2 +-
.../all/rt/mm-bounce-local-irq-save-nort.patch | 2 +-
.../all/rt/mm-convert-swap-to-percpu-locked.patch | 8 +-
.../features/all/rt/mm-disable-sloub-rt.patch | 2 +-
.../patches/features/all/rt/mm-enable-slub.patch | 2 +-
.../features/all/rt/mm-make-vmstat-rt-aware.patch | 2 +-
...ol-Don-t-call-schedule_work_on-in-preempt.patch | 6 +-
.../all/rt/mm-memcontrol-do_not_disable_irq.patch | 12 +-
...ol-mem_cgroup_migrate-replace-another-loc.patch | 4 +-
...m-page-alloc-use-local-lock-on-target-cpu.patch | 2 +-
...m-page_alloc-reduce-lock-sections-further.patch | 8 +-
.../mm-page_alloc-rt-friendly-per-cpu-pages.patch | 26 +-
.../rt/mm-perform-lru_add_drain_all-remotely.patch | 2 +-
.../all/rt/mm-protect-activate-switch-mm.patch | 2 +-
.../all/rt/mm-rt-kmap-atomic-scheduling.patch | 4 +-
.../mm-scatterlist-dont-disable-irqs-on-RT.patch | 2 +-
.../all/rt/mm-vmalloc-use-get-cpu-light.patch | 2 +-
...et-do-not-protect-workingset_shadow_nodes.patch | 4 +-
...smalloc_copy_with_get_cpu_var_and_locking.patch | 2 +-
.../all/rt/mmci-remove-bogus-irq-save.patch | 2 +-
.../all/rt/move_sched_delayed_work_to_helper.patch | 2 +-
.../features/all/rt/mutex-no-spin-on-rt.patch | 2 +-
...napi_schedule_irqoff-disable-interrupts-o.patch | 6 +-
.../net-Qdisc-use-a-seqlock-instead-seqcount.patch | 2 +-
.../all/rt/net-add-a-lock-around-icmp_sk.patch | 2 +-
...k-the-missing-serialization-in-ip_send_un.patch | 2 +-
...r-local-irq-disable-alloc-atomic-headache.patch | 2 +-
...cpuhotplug-drain-input_pkt_queue-lockless.patch | 4 +-
...otect-users-of-napi_alloc_cache-against-r.patch | 2 +-
...ays-take-qdisc-s-busylock-in-__dev_xmit_s.patch | 2 +-
...-iptable-xt-write-recseq-begin-rt-fallout.patch | 2 +-
.../rt/net-make-devnet_rename_seq-a-mutex.patch | 2 +-
...xmit_recursion-to-per-task-variable-on-RT.patch | 4 +-
.../all/rt/net-prevent-abba-deadlock.patch | 2 +-
...-a-way-to-delegate-processing-a-softirq-t.patch | 4 +-
...ev_deactivate_many-use-msleep-1-instead-o.patch | 2 +-
.../features/all/rt/net-use-cpu-chill.patch | 2 +-
.../features/all/rt/net-wireless-warn-nort.patch | 4 +-
.../features/all/rt/oleg-signal-rt-fix.patch | 4 +-
.../all/rt/panic-disable-random-on-rt.patch | 2 +-
...troduce-rcu-bh-qs-where-safe-from-softirq.patch | 4 +-
.../rt/pci-access-use-__wake_up_all_locked.patch | 2 +-
.../features/all/rt/percpu_ida-use-locklocks.patch | 2 +-
.../all/rt/perf-make-swevent-hrtimer-irqsafe.patch | 2 +-
.../features/all/rt/peter_zijlstra-frob-rcu.patch | 2 +-
.../features/all/rt/peterz-percpu-rwsem-rt.patch | 2 +-
.../features/all/rt/peterz-srcu-crypto-chain.patch | 2 +-
.../features/all/rt/pid.h-include-atomic.h.patch | 2 +-
.../pinctrl-qcom-Use-raw-spinlock-variants.patch | 253 ++++++++++++++++++
debian/patches/features/all/rt/ping-sysrq.patch | 2 +-
.../all/rt/posix-timers-no-broadcast.patch | 2 +-
...osix-timers-thread-posix-cpu-timers-on-rt.patch | 4 +-
.../all/rt/power-disable-highmem-on-rt.patch | 2 +-
.../all/rt/power-use-generic-rwsem-on-rt.patch | 2 +-
...-Disable-in-kernel-MPIC-emulation-for-PRE.patch | 2 +-
.../all/rt/powerpc-preempt-lazy-support.patch | 2 +-
...-device-init.c-adapt-to-completions-using.patch | 2 +-
.../features/all/rt/preempt-lazy-support.patch | 4 +-
.../features/all/rt/preempt-nort-rt-variants.patch | 2 +-
...intk-27-boot-param-to-help-with-debugging.patch | 2 +-
debian/patches/features/all/rt/printk-kill.patch | 6 +-
.../patches/features/all/rt/printk-rt-aware.patch | 2 +-
.../ptrace-fix-ptrace-vs-tasklist_lock-race.patch | 6 +-
.../features/all/rt/radix-tree-rt-aware.patch | 80 ------
.../all/rt/radix-tree-use-local-locks.patch | 125 +++++++++
.../all/rt/random-make-it-work-on-rt.patch | 2 +-
.../rbtree-include-rcu.h-because-we-use-it.patch | 2 +-
...Eliminate-softirq-processing-from-rcutree.patch | 8 +-
.../all/rt/rcu-disable-rcu-fast-no-hz-on-rt.patch | 2 +-
...e-rcu_normal_after_boot-by-default-for-RT.patch | 2 +-
.../all/rt/rcu-make-RCU_BOOST-default-on-RT.patch | 2 +-
.../rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch | 42 +--
...rcu-update-make-RCU_EXPEDITE_BOOT-default.patch | 6 +-
..._bh_qs-disable-irq-while-calling-rcu_pree.patch | 4 +-
...-migrate_disable-race-with-cpu-hotplug-3f.patch | 2 +-
...t_full-arm-coredump-fails-for-cpu-3e-3d-4.patch | 2 +-
...ping-function-called-from-invalid-context.patch | 2 +-
.../patches/features/all/rt/rt-add-rt-locks.patch | 2 +-
.../features/all/rt/rt-introduce-cpu-chill.patch | 2 +-
.../features/all/rt/rt-local-irq-lock.patch | 2 +-
...cking-Reenable-migration-accross-schedule.patch | 2 +-
.../features/all/rt/rt-preempt-base-config.patch | 2 +-
.../features/all/rt/rt-serial-warn-fix.patch | 2 +-
...x--Handle-non-enqueued-waiters-gracefully.patch | 2 +-
.../rt/rtmutex-add-a-first-shot-of-ww_mutex.patch | 2 +-
.../all/rt/rtmutex-avoid-include-hell.patch | 2 +-
.../features/all/rt/rtmutex-futex-prepare-rt.patch | 2 +-
.../features/all/rt/rtmutex-lock-killable.patch | 2 +-
.../all/rt/rtmutex-trylock-is-okay-on-RT.patch | 2 +-
.../features/all/rt/rtmutex_dont_include_rcu.patch | 4 +-
.../rt/rxrpc-remove-unused-static-variables.patch | 2 +-
...i-dont-t-disable-interrupts-in-qc_issue-h.patch | 2 +-
...-deadline-dl_task_timer-has-to-be-irqsafe.patch | 2 +-
.../features/all/rt/sched-delay-put-task.patch | 8 +-
.../rt/sched-disable-rt-group-sched-on-rt.patch | 2 +-
.../features/all/rt/sched-disable-ttwu-queue.patch | 2 +-
.../features/all/rt/sched-limit-nr-migrate.patch | 2 +-
...ched-might-sleep-do-not-account-rcu-depth.patch | 2 +-
.../features/all/rt/sched-mmdrop-delayed.patch | 8 +-
.../features/all/rt/sched-rt-mutex-wakeup.patch | 4 +-
...hed-ttwu-ensure-success-return-is-correct.patch | 2 +-
...ueue-Only-wake-up-idle-workers-if-not-blo.patch | 2 +-
.../features/all/rt/scsi-fcoe-rt-aware.patch | 2 +-
...ping-function-called-from-invalid-context.patch | 2 +-
.../all/rt/seqlock-prevent-rt-starvation.patch | 2 +-
.../all/rt/signal-fix-up-rcu-wreckage.patch | 2 +-
.../rt/signal-revert-ptrace-preempt-magic.patch | 2 +-
...low-rt-tasks-to-cache-one-sigqueue-struct.patch | 6 +-
.../features/all/rt/skbufhead-raw-lock.patch | 14 +-
.../all/rt/slub-disable-SLUB_CPU_PARTIAL.patch | 2 +-
.../all/rt/slub-enable-irqs-for-no-wait.patch | 2 +-
...-snd_pcm_stream_lock-irqs_disabled-splats.patch | 2 +-
.../rt/softirq-disable-softirq-stacks-for-rt.patch | 2 +-
.../features/all/rt/softirq-preempt-fix-3-re.patch | 10 +-
.../features/all/rt/softirq-split-locks.patch | 6 +-
...irq-split-timer-softirqs-out-of-ksoftirqd.patch | 2 +-
.../softirq-wake-the-timer-softirq-if-needed.patch | 73 ++++++
.../sparc64-use-generic-rwsem-spinlocks-rt.patch | 2 +-
.../all/rt/spinlock-types-separate-raw.patch | 2 +-
.../features/all/rt/stop-machine-raw-lock.patch | 2 +-
...ne-convert-stop_machine_run-to-PREEMPT_RT.patch | 2 +-
...ake-svc_xprt_do_enqueue-use-get_cpu_light.patch | 2 +-
.../rt/suspend-prevernt-might-sleep-splats.patch | 2 +-
.../features/all/rt/sysfs-realtime-entry.patch | 2 +-
...klets-from-going-into-infinite-spin-in-rt.patch | 2 +-
.../thermal-Defer-thermal-wakups-to-threads.patch | 2 +-
.../rt/tick-broadcast--Make-hrtimer-irqsafe.patch | 2 +-
.../all/rt/timekeeping-split-jiffies-lock.patch | 2 +-
...delay-waking-softirqs-from-the-jiffy-tick.patch | 2 +-
.../features/all/rt/timer-fd-avoid-live-lock.patch | 2 +-
.../all/rt/timer-make-the-base-lock-raw.patch | 2 +-
.../rt/timers-prepare-for-full-preemption.patch | 2 +-
...cy-hist-Consider-new-argument-when-probin.patch | 2 +-
...e_version_for_preemptoff_hist_trace_point.patch | 2 +-
...count-for-preempt-off-in-preempt_schedule.patch | 2 +-
...l-8250-don-t-take-the-trylock-during-oops.patch | 2 +-
...t-remove-preemption-disabling-in-netif_rx.patch | 2 +-
.../all/rt/usb-use-_nort-in-giveback.patch | 2 +-
.../features/all/rt/user-use-local-irq-nort.patch | 2 +-
.../features/all/rt/wait.h-include-atomic.h.patch | 2 +-
...ue-work-around-irqsafe-timer-optimization.patch | 2 +-
...rk-simple-Simple-work-queue-implemenation.patch | 2 +-
.../all/rt/workqueue-distangle-from-rq-lock.patch | 2 +-
.../all/rt/workqueue-prevent-deadlock-stall.patch | 2 +-
.../features/all/rt/workqueue-use-locallock.patch | 2 +-
.../features/all/rt/workqueue-use-rcu.patch | 2 +-
.../all/rt/x86-UV-raw_spinlock-conversion.patch | 2 +-
...t-rid-of-warning-acpi_ioapic_lock-defined.patch | 2 +-
...86-crypto-reduce-preempt-disabled-regions.patch | 2 +-
.../x86-highmem-add-a-already-used-pte-check.patch | 2 +-
.../all/rt/x86-io-apic-migra-no-unmask.patch | 2 +-
.../all/rt/x86-kvm-require-const-tsc-for-rt.patch | 4 +-
.../features/all/rt/x86-mce-timer-hrtimer.patch | 2 +-
.../x86-mce-use-swait-queue-for-mce-wakeups.patch | 2 +-
.../rt/x86-mm-cpa-avoid-wbinvd-for-PREEMPT.patch | 40 +++
.../patches/features/all/rt/x86-preempt-lazy.patch | 2 +-
...x86-signal-delay-calling-signals-on-32bit.patch | 2 +-
.../all/rt/x86-stackprot-no-random-on-rt.patch | 2 +-
.../all/rt/x86-use-gen-rwsem-spinlocks-rt.patch | 2 +-
debian/patches/series-rt | 7 +-
291 files changed, 1206 insertions(+), 531 deletions(-)
diff --git a/debian/changelog b/debian/changelog
index 852ce0a..94a7dfe 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -118,6 +118,14 @@ linux (4.9.8-1) UNRELEASED; urgency=medium
USB_FUNCTIONFS_{ETH,RNDIS,GENERIC} (thanks to Riku Voipio)
* [ppc64el] Disable IBMEBUS; this bus does not exist on POWER8 systems
* aufs: Update support patchset to aufs4.9-20170206
+ * [rt] Update to 4.9.6-rt4:
+ - Revert "btrfs: swap free() and trace point in run_ordered_work()"
+ - pinctrl: qcom: Use raw spinlock variants
+ - x86/mm/cpa: avoid wbinvd() for PREEMPT
+ - Revert "radix-tree: Make RT aware"
+ - radix-tree: use local locks
+ - softirq: wake the timer softirq if needed
+ - cpuset: Convert callback_lock to raw_spinlock_t
[ Roger Shimizu ]
* [armel] ARM: dts: orion5x-lschl: Fix model name
diff --git a/debian/patches/features/all/rt/ARM-enable-irq-in-translation-section-permission-fau.patch b/debian/patches/features/all/rt/ARM-enable-irq-in-translation-section-permission-fau.patch
index 7c0bf97..42711a2 100644
--- a/debian/patches/features/all/rt/ARM-enable-irq-in-translation-section-permission-fau.patch
+++ b/debian/patches/features/all/rt/ARM-enable-irq-in-translation-section-permission-fau.patch
@@ -1,7 +1,7 @@
From: "Yadi.hu" <yadi.hu at windriver.com>
Date: Wed, 10 Dec 2014 10:32:09 +0800
Subject: ARM: enable irq in translation/section permission fault handlers
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Probably happens on all ARM, with
CONFIG_PREEMPT_RT_FULL
diff --git a/debian/patches/features/all/rt/HACK-printk-drop-the-logbuf_lock-more-often.patch b/debian/patches/features/all/rt/HACK-printk-drop-the-logbuf_lock-more-often.patch
index 88ba0b7..a9b6c21 100644
--- a/debian/patches/features/all/rt/HACK-printk-drop-the-logbuf_lock-more-often.patch
+++ b/debian/patches/features/all/rt/HACK-printk-drop-the-logbuf_lock-more-often.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 21 Mar 2013 19:01:05 +0100
Subject: printk: Drop the logbuf_lock more often
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The lock is hold with irgs off. The latency drops 500us+ on my arm bugs
with a "full" buffer after executing "dmesg" on the shell.
diff --git a/debian/patches/features/all/rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch b/debian/patches/features/all/rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch
index d91772f..156ec2e 100644
--- a/debian/patches/features/all/rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch
+++ b/debian/patches/features/all/rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch
@@ -1,7 +1,7 @@
From: Josh Cartwright <joshc at ni.com>
Date: Thu, 11 Feb 2016 11:54:01 -0600
Subject: KVM: arm/arm64: downgrade preempt_disable()d region to migrate_disable()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
kvm_arch_vcpu_ioctl_run() disables the use of preemption when updating
the vgic and timer states to prevent the calling task from migrating to
diff --git a/debian/patches/features/all/rt/KVM-lapic-mark-LAPIC-timer-handler-as-irqsafe.patch b/debian/patches/features/all/rt/KVM-lapic-mark-LAPIC-timer-handler-as-irqsafe.patch
index 13212a4..e5d8171 100644
--- a/debian/patches/features/all/rt/KVM-lapic-mark-LAPIC-timer-handler-as-irqsafe.patch
+++ b/debian/patches/features/all/rt/KVM-lapic-mark-LAPIC-timer-handler-as-irqsafe.patch
@@ -1,7 +1,7 @@
From: Marcelo Tosatti <mtosatti at redhat.com>
Date: Wed, 8 Apr 2015 20:33:25 -0300
Subject: KVM: lapic: mark LAPIC timer handler as irqsafe
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Since lapic timer handler only wakes up a simple waitqueue,
it can be executed from hardirq context.
diff --git a/debian/patches/features/all/rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch b/debian/patches/features/all/rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch
index abe028a..7664e8b 100644
--- a/debian/patches/features/all/rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch
+++ b/debian/patches/features/all/rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch
@@ -5,7 +5,7 @@ Cc: Anna Schumaker <anna.schumaker at netapp.com>,
linux-nfs at vger.kernel.org, linux-kernel at vger.kernel.org,
tglx at linutronix.de
Subject: NFSv4: replace seqcount_t with a seqlock_t
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The raw_write_seqcount_begin() in nfs4_reclaim_open_state() bugs me
because it maps to preempt_disable() in -RT which I can't have at this
diff --git a/debian/patches/features/all/rt/acpi-rt-Convert-acpi_gbl_hardware-lock-back-to-a-raw.patch b/debian/patches/features/all/rt/acpi-rt-Convert-acpi_gbl_hardware-lock-back-to-a-raw.patch
index 4184747..64bbc78 100644
--- a/debian/patches/features/all/rt/acpi-rt-Convert-acpi_gbl_hardware-lock-back-to-a-raw.patch
+++ b/debian/patches/features/all/rt/acpi-rt-Convert-acpi_gbl_hardware-lock-back-to-a-raw.patch
@@ -1,7 +1,7 @@
From: Steven Rostedt <rostedt at goodmis.org>
Date: Wed, 13 Feb 2013 09:26:05 -0500
Subject: acpi/rt: Convert acpi_gbl_hardware lock back to a raw_spinlock_t
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
We hit the following bug with 3.6-rt:
diff --git a/debian/patches/features/all/rt/arch-arm64-Add-lazy-preempt-support.patch b/debian/patches/features/all/rt/arch-arm64-Add-lazy-preempt-support.patch
index d2256b6..2879f69 100644
--- a/debian/patches/features/all/rt/arch-arm64-Add-lazy-preempt-support.patch
+++ b/debian/patches/features/all/rt/arch-arm64-Add-lazy-preempt-support.patch
@@ -1,7 +1,7 @@
From: Anders Roxell <anders.roxell at linaro.org>
Date: Thu, 14 May 2015 17:52:17 +0200
Subject: arch/arm64: Add lazy preempt support
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
arm64 is missing support for PREEMPT_RT. The main feature which is
lacking is support for lazy preemption. The arch-specific entry code,
diff --git a/debian/patches/features/all/rt/arm-at91-pit-remove-irq-handler-when-clock-is-unused.patch b/debian/patches/features/all/rt/arm-at91-pit-remove-irq-handler-when-clock-is-unused.patch
index 70754dd..0b6b6f7 100644
--- a/debian/patches/features/all/rt/arm-at91-pit-remove-irq-handler-when-clock-is-unused.patch
+++ b/debian/patches/features/all/rt/arm-at91-pit-remove-irq-handler-when-clock-is-unused.patch
@@ -1,7 +1,7 @@
From: Benedikt Spranger <b.spranger at linutronix.de>
Date: Sat, 6 Mar 2010 17:47:10 +0100
Subject: ARM: AT91: PIT: Remove irq handler when clock event is unused
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Setup and remove the interrupt handler in clock event mode selection.
This avoids calling the (shared) interrupt handler when the device is
diff --git a/debian/patches/features/all/rt/arm-at91-tclib-default-to-tclib-timer-for-rt.patch b/debian/patches/features/all/rt/arm-at91-tclib-default-to-tclib-timer-for-rt.patch
index d4a6cff..a5417f5 100644
--- a/debian/patches/features/all/rt/arm-at91-tclib-default-to-tclib-timer-for-rt.patch
+++ b/debian/patches/features/all/rt/arm-at91-tclib-default-to-tclib-timer-for-rt.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sat, 1 May 2010 18:29:35 +0200
Subject: ARM: at91: tclib: Default to tclib timer for RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
RT is not too happy about the shared timer interrupt in AT91
devices. Default to tclib timer for RT.
diff --git a/debian/patches/features/all/rt/arm-convert-boot-lock-to-raw.patch b/debian/patches/features/all/rt/arm-convert-boot-lock-to-raw.patch
index 67b2b2e..a438c59 100644
--- a/debian/patches/features/all/rt/arm-convert-boot-lock-to-raw.patch
+++ b/debian/patches/features/all/rt/arm-convert-boot-lock-to-raw.patch
@@ -1,7 +1,7 @@
From: Frank Rowand <frank.rowand at am.sony.com>
Date: Mon, 19 Sep 2011 14:51:14 -0700
Subject: arm: Convert arm boot_lock to raw
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The arm boot_lock is used by the secondary processor startup code. The locking
task is the idle thread, which has idle->sched_class == &idle_sched_class.
diff --git a/debian/patches/features/all/rt/arm-enable-highmem-for-rt.patch b/debian/patches/features/all/rt/arm-enable-highmem-for-rt.patch
index 9a12751..e13b353 100644
--- a/debian/patches/features/all/rt/arm-enable-highmem-for-rt.patch
+++ b/debian/patches/features/all/rt/arm-enable-highmem-for-rt.patch
@@ -1,7 +1,7 @@
Subject: arm: Enable highmem for rt
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 13 Feb 2013 11:03:11 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
fixup highmem for ARM.
diff --git a/debian/patches/features/all/rt/arm-highmem-flush-tlb-on-unmap.patch b/debian/patches/features/all/rt/arm-highmem-flush-tlb-on-unmap.patch
index 69c01c5..eec28e9 100644
--- a/debian/patches/features/all/rt/arm-highmem-flush-tlb-on-unmap.patch
+++ b/debian/patches/features/all/rt/arm-highmem-flush-tlb-on-unmap.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Mon, 11 Mar 2013 21:37:27 +0100
Subject: arm/highmem: Flush tlb on unmap
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The tlb should be flushed on unmap and thus make the mapping entry
invalid. This is only done in the non-debug case which does not look
diff --git a/debian/patches/features/all/rt/arm-include-definition-for-cpumask_t.patch b/debian/patches/features/all/rt/arm-include-definition-for-cpumask_t.patch
index 87905aa..1a8d17f 100644
--- a/debian/patches/features/all/rt/arm-include-definition-for-cpumask_t.patch
+++ b/debian/patches/features/all/rt/arm-include-definition-for-cpumask_t.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 22 Dec 2016 17:28:33 +0100
Subject: [PATCH] arm: include definition for cpumask_t
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
This definition gets pulled in by other files. With the (later) split of
RCU and spinlock.h it won't compile anymore.
diff --git a/debian/patches/features/all/rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch b/debian/patches/features/all/rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch
index d3126f0..98b467e 100644
--- a/debian/patches/features/all/rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch
+++ b/debian/patches/features/all/rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch
@@ -2,7 +2,7 @@ From 6e2639b6d72e1ef9e264aa658db3b6171d9ba12f Mon Sep 17 00:00:00 2001
From: Yang Shi <yang.shi at linaro.org>
Date: Thu, 10 Nov 2016 16:17:55 -0800
Subject: [PATCH] arm: kprobe: replace patch_lock to raw lock
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
When running kprobe on -rt kernel, the below bug is caught:
diff --git a/debian/patches/features/all/rt/arm-preempt-lazy-support.patch b/debian/patches/features/all/rt/arm-preempt-lazy-support.patch
index f3364a2..ba1d4ea 100644
--- a/debian/patches/features/all/rt/arm-preempt-lazy-support.patch
+++ b/debian/patches/features/all/rt/arm-preempt-lazy-support.patch
@@ -1,7 +1,7 @@
Subject: arm: Add support for lazy preemption
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 31 Oct 2012 12:04:11 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Implement the arm pieces for lazy preempt.
diff --git a/debian/patches/features/all/rt/arm-unwind-use_raw_lock.patch b/debian/patches/features/all/rt/arm-unwind-use_raw_lock.patch
index 622dcc7..712a641 100644
--- a/debian/patches/features/all/rt/arm-unwind-use_raw_lock.patch
+++ b/debian/patches/features/all/rt/arm-unwind-use_raw_lock.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 20 Sep 2013 14:31:54 +0200
Subject: arm/unwind: use a raw_spin_lock
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Mostly unwind is done with irqs enabled however SLUB may call it with
irqs disabled while creating a new SLUB cache.
diff --git a/debian/patches/features/all/rt/arm64-xen--Make-XEN-depend-on-non-rt.patch b/debian/patches/features/all/rt/arm64-xen--Make-XEN-depend-on-non-rt.patch
index 38d7eff..fcc4aee 100644
--- a/debian/patches/features/all/rt/arm64-xen--Make-XEN-depend-on-non-rt.patch
+++ b/debian/patches/features/all/rt/arm64-xen--Make-XEN-depend-on-non-rt.patch
@@ -1,7 +1,7 @@
Subject: arm64/xen: Make XEN depend on !RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Mon, 12 Oct 2015 11:18:40 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
It's not ready and probably never will be, unless xen folks have a
look at it.
diff --git a/debian/patches/features/all/rt/at91_dont_enable_disable_clock.patch b/debian/patches/features/all/rt/at91_dont_enable_disable_clock.patch
index 1c84694..221f3c5 100644
--- a/debian/patches/features/all/rt/at91_dont_enable_disable_clock.patch
+++ b/debian/patches/features/all/rt/at91_dont_enable_disable_clock.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 09 Mar 2016 10:51:06 +0100
Subject: arm: at91: do not disable/enable clocks in a row
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Currently the driver will disable the clock and enable it one line later
if it is switching from periodic mode into one shot.
diff --git a/debian/patches/features/all/rt/ata-disable-interrupts-if-non-rt.patch b/debian/patches/features/all/rt/ata-disable-interrupts-if-non-rt.patch
index 0befaf7..8324778 100644
--- a/debian/patches/features/all/rt/ata-disable-interrupts-if-non-rt.patch
+++ b/debian/patches/features/all/rt/ata-disable-interrupts-if-non-rt.patch
@@ -1,7 +1,7 @@
From: Steven Rostedt <srostedt at redhat.com>
Date: Fri, 3 Jul 2009 08:44:29 -0500
Subject: ata: Do not disable interrupts in ide code for preempt-rt
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Use the local_irq_*_nort variants.
diff --git a/debian/patches/features/all/rt/block-blk-mq-use-swait.patch b/debian/patches/features/all/rt/block-blk-mq-use-swait.patch
index 50de26c..1849e25 100644
--- a/debian/patches/features/all/rt/block-blk-mq-use-swait.patch
+++ b/debian/patches/features/all/rt/block-blk-mq-use-swait.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 13 Feb 2015 11:01:26 +0100
Subject: block: blk-mq: Use swait
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
| BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:914
| in_atomic(): 1, irqs_disabled(): 0, pid: 255, name: kworker/u257:6
diff --git a/debian/patches/features/all/rt/block-mq-don-t-complete-requests-via-IPI.patch b/debian/patches/features/all/rt/block-mq-don-t-complete-requests-via-IPI.patch
index 3546d33..773af56 100644
--- a/debian/patches/features/all/rt/block-mq-don-t-complete-requests-via-IPI.patch
+++ b/debian/patches/features/all/rt/block-mq-don-t-complete-requests-via-IPI.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 29 Jan 2015 15:10:08 +0100
Subject: block/mq: don't complete requests via IPI
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The IPI runs in hardirq context and there are sleeping locks. This patch
moves the completion into a workqueue.
diff --git a/debian/patches/features/all/rt/block-mq-drop-preempt-disable.patch b/debian/patches/features/all/rt/block-mq-drop-preempt-disable.patch
index 4b1d5a0..93a7d44 100644
--- a/debian/patches/features/all/rt/block-mq-drop-preempt-disable.patch
+++ b/debian/patches/features/all/rt/block-mq-drop-preempt-disable.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Tue, 14 Jul 2015 14:26:34 +0200
Subject: block/mq: do not invoke preempt_disable()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
preempt_disable() and get_cpu() don't play well together with the sleeping
locks it tries to allocate later.
@@ -32,7 +32,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
}
static void __blk_mq_complete_request(struct request *rq)
-@@ -917,14 +917,14 @@ void blk_mq_run_hw_queue(struct blk_mq_h
+@@ -915,14 +915,14 @@ void blk_mq_run_hw_queue(struct blk_mq_h
return;
if (!async && !(hctx->flags & BLK_MQ_F_BLOCKING)) {
diff --git a/debian/patches/features/all/rt/block-mq-use-cpu_light.patch b/debian/patches/features/all/rt/block-mq-use-cpu_light.patch
index 3f8c635..3b2a0c4 100644
--- a/debian/patches/features/all/rt/block-mq-use-cpu_light.patch
+++ b/debian/patches/features/all/rt/block-mq-use-cpu_light.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 9 Apr 2014 10:37:23 +0200
Subject: block: mq: use cpu_light()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
there is a might sleep splat because get_cpu() disables preemption and
later we grab a lock. As a workaround for this we use get_cpu_light().
diff --git a/debian/patches/features/all/rt/block-shorten-interrupt-disabled-regions.patch b/debian/patches/features/all/rt/block-shorten-interrupt-disabled-regions.patch
index 9ddd078..98c22c8 100644
--- a/debian/patches/features/all/rt/block-shorten-interrupt-disabled-regions.patch
+++ b/debian/patches/features/all/rt/block-shorten-interrupt-disabled-regions.patch
@@ -1,7 +1,7 @@
Subject: block: Shorten interrupt disabled regions
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 22 Jun 2011 19:47:02 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Moving the blk_sched_flush_plug() call out of the interrupt/preempt
disabled region in the scheduler allows us to replace
diff --git a/debian/patches/features/all/rt/block-use-cpu-chill.patch b/debian/patches/features/all/rt/block-use-cpu-chill.patch
index b4760dd..08fc97d 100644
--- a/debian/patches/features/all/rt/block-use-cpu-chill.patch
+++ b/debian/patches/features/all/rt/block-use-cpu-chill.patch
@@ -1,7 +1,7 @@
Subject: block: Use cpu_chill() for retry loops
From: Thomas Gleixner <tglx at linutronix.de>
Date: Thu, 20 Dec 2012 18:28:26 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Retry loops on RT might loop forever when the modifying side was
preempted. Steven also observed a live lock when there was a
diff --git a/debian/patches/features/all/rt/btrfs-swap-free-and-trace-point-in-run_ordered_work.patch b/debian/patches/features/all/rt/btrfs-swap-free-and-trace-point-in-run_ordered_work.patch
deleted file mode 100644
index 0cb5766..0000000
--- a/debian/patches/features/all/rt/btrfs-swap-free-and-trace-point-in-run_ordered_work.patch
+++ /dev/null
@@ -1,34 +0,0 @@
-From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
-Date: Wed, 14 Dec 2016 12:28:52 +0100
-Subject: [PATCH] btrfs: swap free() and trace point in run_ordered_work()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
-
-The previous patch removed a trace point due to a use after free problem
-with tracing enabled. While looking at the backtrace it took me a while
-to find the right spot. While doing so I noticed that this trace point
-could be used with two clean-up functions in run_ordered_work():
-- run_one_async_free()
-- async_cow_free()
-
-Both of them free the `work' item so a later use in the tracepoint is
-not possible.
-This patches swaps the order so we first have the trace point and then
-free the struct.
-
-Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
----
- fs/btrfs/async-thread.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
---- a/fs/btrfs/async-thread.c
-+++ b/fs/btrfs/async-thread.c
-@@ -306,8 +306,8 @@ static void run_ordered_work(struct __bt
- * because the callback could free the structure.
- */
- wtag = work;
-- work->ordered_free(work);
- trace_btrfs_all_work_done(wq->fs_info, wtag);
-+ work->ordered_free(work);
- }
- spin_unlock_irqrestore(lock, flags);
- }
diff --git a/debian/patches/features/all/rt/bug-rt-dependend-variants.patch b/debian/patches/features/all/rt/bug-rt-dependend-variants.patch
index e338270..534187c 100644
--- a/debian/patches/features/all/rt/bug-rt-dependend-variants.patch
+++ b/debian/patches/features/all/rt/bug-rt-dependend-variants.patch
@@ -1,7 +1,7 @@
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 3 Jul 2009 08:29:58 -0500
Subject: bug: BUG_ON/WARN_ON variants dependend on RT/!RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Introduce RT/NON-RT WARN/BUG statements to avoid ifdefs in the code.
diff --git a/debian/patches/features/all/rt/cgroups-scheduling-while-atomic-in-cgroup-code.patch b/debian/patches/features/all/rt/cgroups-scheduling-while-atomic-in-cgroup-code.patch
index 006095b..1138187 100644
--- a/debian/patches/features/all/rt/cgroups-scheduling-while-atomic-in-cgroup-code.patch
+++ b/debian/patches/features/all/rt/cgroups-scheduling-while-atomic-in-cgroup-code.patch
@@ -1,7 +1,7 @@
From: Mike Galbraith <umgwanakikbuti at gmail.com>
Date: Sat, 21 Jun 2014 10:09:48 +0200
Subject: memcontrol: Prevent scheduling while atomic in cgroup code
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
mm, memcg: make refill_stock() use get_cpu_light()
@@ -43,7 +43,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
-@@ -1697,6 +1697,7 @@ struct memcg_stock_pcp {
+@@ -1695,6 +1695,7 @@ struct memcg_stock_pcp {
#define FLUSHING_CACHED_CHARGE 0
};
static DEFINE_PER_CPU(struct memcg_stock_pcp, memcg_stock);
@@ -51,7 +51,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
static DEFINE_MUTEX(percpu_charge_mutex);
/**
-@@ -1719,7 +1720,7 @@ static bool consume_stock(struct mem_cgr
+@@ -1717,7 +1718,7 @@ static bool consume_stock(struct mem_cgr
if (nr_pages > CHARGE_BATCH)
return ret;
@@ -60,7 +60,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
stock = this_cpu_ptr(&memcg_stock);
if (memcg == stock->cached && stock->nr_pages >= nr_pages) {
-@@ -1727,7 +1728,7 @@ static bool consume_stock(struct mem_cgr
+@@ -1725,7 +1726,7 @@ static bool consume_stock(struct mem_cgr
ret = true;
}
@@ -69,7 +69,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
return ret;
}
-@@ -1754,13 +1755,13 @@ static void drain_local_stock(struct wor
+@@ -1752,13 +1753,13 @@ static void drain_local_stock(struct wor
struct memcg_stock_pcp *stock;
unsigned long flags;
@@ -85,7 +85,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
}
/*
-@@ -1772,7 +1773,7 @@ static void refill_stock(struct mem_cgro
+@@ -1770,7 +1771,7 @@ static void refill_stock(struct mem_cgro
struct memcg_stock_pcp *stock;
unsigned long flags;
@@ -94,7 +94,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
stock = this_cpu_ptr(&memcg_stock);
if (stock->cached != memcg) { /* reset if necessary */
-@@ -1781,7 +1782,7 @@ static void refill_stock(struct mem_cgro
+@@ -1779,7 +1780,7 @@ static void refill_stock(struct mem_cgro
}
stock->nr_pages += nr_pages;
diff --git a/debian/patches/features/all/rt/cgroups-use-simple-wait-in-css_release.patch b/debian/patches/features/all/rt/cgroups-use-simple-wait-in-css_release.patch
index a5f7a6e..3fe6319 100644
--- a/debian/patches/features/all/rt/cgroups-use-simple-wait-in-css_release.patch
+++ b/debian/patches/features/all/rt/cgroups-use-simple-wait-in-css_release.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 13 Feb 2015 15:52:24 +0100
Subject: cgroups: use simple wait in css_release()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
To avoid:
|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:914
diff --git a/debian/patches/features/all/rt/clockevents-drivers-timer-atmel-pit-fix-double-free_.patch b/debian/patches/features/all/rt/clockevents-drivers-timer-atmel-pit-fix-double-free_.patch
index c4e8a60..224e0e3 100644
--- a/debian/patches/features/all/rt/clockevents-drivers-timer-atmel-pit-fix-double-free_.patch
+++ b/debian/patches/features/all/rt/clockevents-drivers-timer-atmel-pit-fix-double-free_.patch
@@ -1,7 +1,7 @@
From: Alexandre Belloni <alexandre.belloni at free-electrons.com>
Date: Thu, 17 Mar 2016 21:09:43 +0100
Subject: [PATCH] clockevents/drivers/timer-atmel-pit: fix double free_irq
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
clockevents_exchange_device() changes the state from detached to shutdown
and so at that point the IRQ has not yet been requested.
diff --git a/debian/patches/features/all/rt/clocksource-tclib-allow-higher-clockrates.patch b/debian/patches/features/all/rt/clocksource-tclib-allow-higher-clockrates.patch
index 7140750..ecdc7ed 100644
--- a/debian/patches/features/all/rt/clocksource-tclib-allow-higher-clockrates.patch
+++ b/debian/patches/features/all/rt/clocksource-tclib-allow-higher-clockrates.patch
@@ -1,7 +1,7 @@
From: Benedikt Spranger <b.spranger at linutronix.de>
Date: Mon, 8 Mar 2010 18:57:04 +0100
Subject: clocksource: TCLIB: Allow higher clock rates for clock events
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
As default the TCLIB uses the 32KiHz base clock rate for clock events.
Add a compile time selection to allow higher clock resulution.
diff --git a/debian/patches/features/all/rt/completion-use-simple-wait-queues.patch b/debian/patches/features/all/rt/completion-use-simple-wait-queues.patch
index d5228b1..d99e14f 100644
--- a/debian/patches/features/all/rt/completion-use-simple-wait-queues.patch
+++ b/debian/patches/features/all/rt/completion-use-simple-wait-queues.patch
@@ -1,7 +1,7 @@
Subject: completion: Use simple wait queues
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 11 Jan 2013 11:23:51 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Completions have no long lasting callbacks and therefor do not need
the complex waitqueue variant. Use simple waitqueues which reduces the
diff --git a/debian/patches/features/all/rt/cond-resched-lock-rt-tweak.patch b/debian/patches/features/all/rt/cond-resched-lock-rt-tweak.patch
index 44a9fd5..75c80d1 100644
--- a/debian/patches/features/all/rt/cond-resched-lock-rt-tweak.patch
+++ b/debian/patches/features/all/rt/cond-resched-lock-rt-tweak.patch
@@ -1,7 +1,7 @@
Subject: sched: Use the proper LOCK_OFFSET for cond_resched()
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 17 Jul 2011 22:51:33 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
RT does not increment preempt count when a 'sleeping' spinlock is
locked. Update PREEMPT_LOCK_OFFSET for that case.
diff --git a/debian/patches/features/all/rt/cond-resched-softirq-rt.patch b/debian/patches/features/all/rt/cond-resched-softirq-rt.patch
index 430bce7..f300544 100644
--- a/debian/patches/features/all/rt/cond-resched-softirq-rt.patch
+++ b/debian/patches/features/all/rt/cond-resched-softirq-rt.patch
@@ -1,7 +1,7 @@
Subject: sched: Take RT softirq semantics into account in cond_resched()
From: Thomas Gleixner <tglx at linutronix.de>
Date: Thu, 14 Jul 2011 09:56:44 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The softirq semantics work different on -RT. There is no SOFTIRQ_MASK in
the preemption counter which leads to the BUG_ON() statement in
@@ -16,7 +16,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
-@@ -3366,12 +3366,16 @@ extern int __cond_resched_lock(spinlock_
+@@ -3367,12 +3367,16 @@ extern int __cond_resched_lock(spinlock_
__cond_resched_lock(lock); \
})
diff --git a/debian/patches/features/all/rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch b/debian/patches/features/all/rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch
index 310f6c5..51a6f5c 100644
--- a/debian/patches/features/all/rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch
+++ b/debian/patches/features/all/rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch
@@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti at gmail.com>
Date: Sun, 16 Oct 2016 05:11:54 +0200
Subject: [PATCH] connector/cn_proc: Protect send_msg() with a local lock
on RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:931
|in_atomic(): 1, irqs_disabled(): 0, pid: 31807, name: sleep
diff --git a/debian/patches/features/all/rt/cpu-hotplug-Document-why-PREEMPT_RT-uses-a-spinlock.patch b/debian/patches/features/all/rt/cpu-hotplug-Document-why-PREEMPT_RT-uses-a-spinlock.patch
index 8b78c1b..311b959 100644
--- a/debian/patches/features/all/rt/cpu-hotplug-Document-why-PREEMPT_RT-uses-a-spinlock.patch
+++ b/debian/patches/features/all/rt/cpu-hotplug-Document-why-PREEMPT_RT-uses-a-spinlock.patch
@@ -1,7 +1,7 @@
From: Steven Rostedt <rostedt at goodmis.org>
Date: Thu, 5 Dec 2013 09:16:52 -0500
Subject: cpu hotplug: Document why PREEMPT_RT uses a spinlock
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The patch:
diff --git a/debian/patches/features/all/rt/cpu-rt-make-hotplug-lock-a-sleeping-spinlock-on-rt.patch b/debian/patches/features/all/rt/cpu-rt-make-hotplug-lock-a-sleeping-spinlock-on-rt.patch
index 49086f8..9d13e38 100644
--- a/debian/patches/features/all/rt/cpu-rt-make-hotplug-lock-a-sleeping-spinlock-on-rt.patch
+++ b/debian/patches/features/all/rt/cpu-rt-make-hotplug-lock-a-sleeping-spinlock-on-rt.patch
@@ -1,7 +1,7 @@
Subject: cpu: Make hotplug.lock a "sleeping" spinlock on RT
From: Steven Rostedt <rostedt at goodmis.org>
Date: Fri, 02 Mar 2012 10:36:57 -0500
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Tasks can block on hotplug.lock in pin_current_cpu(), but their state
might be != RUNNING. So the mutex wakeup will set the state
diff --git a/debian/patches/features/all/rt/cpu-rt-rework-cpu-down.patch b/debian/patches/features/all/rt/cpu-rt-rework-cpu-down.patch
index 2ec7d15..5f941c1 100644
--- a/debian/patches/features/all/rt/cpu-rt-rework-cpu-down.patch
+++ b/debian/patches/features/all/rt/cpu-rt-rework-cpu-down.patch
@@ -1,7 +1,7 @@
From: Steven Rostedt <srostedt at redhat.com>
Date: Mon, 16 Jul 2012 08:07:43 +0000
Subject: cpu/rt: Rework cpu down for PREEMPT_RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Bringing a CPU down is a pain with the PREEMPT_RT kernel because
tasks can be preempted in many more places than in non-RT. In
@@ -57,7 +57,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
-@@ -2473,6 +2473,10 @@ extern void do_set_cpus_allowed(struct t
+@@ -2474,6 +2474,10 @@ extern void do_set_cpus_allowed(struct t
extern int set_cpus_allowed_ptr(struct task_struct *p,
const struct cpumask *new_mask);
@@ -68,7 +68,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
#else
static inline void do_set_cpus_allowed(struct task_struct *p,
const struct cpumask *new_mask)
-@@ -2485,6 +2489,9 @@ static inline int set_cpus_allowed_ptr(s
+@@ -2486,6 +2490,9 @@ static inline int set_cpus_allowed_ptr(s
return -EINVAL;
return 0;
}
diff --git a/debian/patches/features/all/rt/cpu_chill-Add-a-UNINTERRUPTIBLE-hrtimer_nanosleep.patch b/debian/patches/features/all/rt/cpu_chill-Add-a-UNINTERRUPTIBLE-hrtimer_nanosleep.patch
index aadc056..5a25acf 100644
--- a/debian/patches/features/all/rt/cpu_chill-Add-a-UNINTERRUPTIBLE-hrtimer_nanosleep.patch
+++ b/debian/patches/features/all/rt/cpu_chill-Add-a-UNINTERRUPTIBLE-hrtimer_nanosleep.patch
@@ -1,7 +1,7 @@
From: Steven Rostedt <rostedt at goodmis.org>
Date: Tue, 4 Mar 2014 12:28:32 -0500
Subject: cpu_chill: Add a UNINTERRUPTIBLE hrtimer_nanosleep
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
We hit another bug that was caused by switching cpu_chill() from
msleep() to hrtimer_nanosleep().
diff --git a/debian/patches/features/all/rt/cpu_down_move_migrate_enable_back.patch b/debian/patches/features/all/rt/cpu_down_move_migrate_enable_back.patch
index 504c896..5dc547e 100644
--- a/debian/patches/features/all/rt/cpu_down_move_migrate_enable_back.patch
+++ b/debian/patches/features/all/rt/cpu_down_move_migrate_enable_back.patch
@@ -1,7 +1,7 @@
From: Tiejun Chen <tiejun.chen at windriver.com>
Subject: cpu_down: move migrate_enable() back
Date: Thu, 7 Nov 2013 10:06:07 +0800
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Commit 08c1ab68, "hotplug-use-migrate-disable.patch", intends to
use migrate_enable()/migrate_disable() to replace that combination
diff --git a/debian/patches/features/all/rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch b/debian/patches/features/all/rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch
index b97d3f5..0da2fe4 100644
--- a/debian/patches/features/all/rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch
+++ b/debian/patches/features/all/rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 9 Apr 2015 15:23:01 +0200
Subject: cpufreq: drop K8's driver from beeing selected
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Ralf posted a picture of a backtrace from
diff --git a/debian/patches/features/all/rt/cpumask-disable-offstack-on-rt.patch b/debian/patches/features/all/rt/cpumask-disable-offstack-on-rt.patch
index fd6e15f..637975b 100644
--- a/debian/patches/features/all/rt/cpumask-disable-offstack-on-rt.patch
+++ b/debian/patches/features/all/rt/cpumask-disable-offstack-on-rt.patch
@@ -1,7 +1,7 @@
Subject: cpumask: Disable CONFIG_CPUMASK_OFFSTACK for RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 14 Dec 2011 01:03:49 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
There are "valid" GFP_ATOMIC allocations such as
diff --git a/debian/patches/features/all/rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch b/debian/patches/features/all/rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch
new file mode 100644
index 0000000..ede2072
--- /dev/null
+++ b/debian/patches/features/all/rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch
@@ -0,0 +1,287 @@
+From: Mike Galbraith <efault at gmx.de>
+Date: Sun, 8 Jan 2017 09:32:25 +0100
+Subject: [PATCH] cpuset: Convert callback_lock to raw_spinlock_t
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
+
+The two commits below add up to a cpuset might_sleep() splat for RT:
+
+8447a0fee974 cpuset: convert callback_mutex to a spinlock
+344736f29b35 cpuset: simplify cpuset_node_allowed API
+
+BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:995
+in_atomic(): 0, irqs_disabled(): 1, pid: 11718, name: cset
+CPU: 135 PID: 11718 Comm: cset Tainted: G E 4.10.0-rt1-rt #4
+Hardware name: Intel Corporation BRICKLAND/BRICKLAND, BIOS BRHSXSD1.86B.0056.R01.1409242327 09/24/2014
+Call Trace:
+ ? dump_stack+0x5c/0x81
+ ? ___might_sleep+0xf4/0x170
+ ? rt_spin_lock+0x1c/0x50
+ ? __cpuset_node_allowed+0x66/0xc0
+ ? ___slab_alloc+0x390/0x570 <disables IRQs>
+ ? anon_vma_fork+0x8f/0x140
+ ? copy_page_range+0x6cf/0xb00
+ ? anon_vma_fork+0x8f/0x140
+ ? __slab_alloc.isra.74+0x5a/0x81
+ ? anon_vma_fork+0x8f/0x140
+ ? kmem_cache_alloc+0x1b5/0x1f0
+ ? anon_vma_fork+0x8f/0x140
+ ? copy_process.part.35+0x1670/0x1ee0
+ ? _do_fork+0xdd/0x3f0
+ ? _do_fork+0xdd/0x3f0
+ ? do_syscall_64+0x61/0x170
+ ? entry_SYSCALL64_slow_path+0x25/0x25
+
+The later ensured that a NUMA box WILL take callback_lock in atomic
+context by removing the allocator and reclaim path __GFP_HARDWALL
+usage which prevented such contexts from taking callback_mutex.
+
+One option would be to reinstate __GFP_HARDWALL protections for
+RT, however, as the 8447a0fee974 changelog states:
+
+The callback_mutex is only used to synchronize reads/updates of cpusets'
+flags and cpu/node masks. These operations should always proceed fast so
+there's no reason why we can't use a spinlock instead of the mutex.
+
+Cc: stable-rt at vger.kernel.org
+Signed-off-by: Mike Galbraith <efault at gmx.de>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ kernel/cpuset.c | 66 ++++++++++++++++++++++++++++----------------------------
+ 1 file changed, 33 insertions(+), 33 deletions(-)
+
+--- a/kernel/cpuset.c
++++ b/kernel/cpuset.c
+@@ -284,7 +284,7 @@ static struct cpuset top_cpuset = {
+ */
+
+ static DEFINE_MUTEX(cpuset_mutex);
+-static DEFINE_SPINLOCK(callback_lock);
++static DEFINE_RAW_SPINLOCK(callback_lock);
+
+ static struct workqueue_struct *cpuset_migrate_mm_wq;
+
+@@ -907,9 +907,9 @@ static void update_cpumasks_hier(struct
+ continue;
+ rcu_read_unlock();
+
+- spin_lock_irq(&callback_lock);
++ raw_spin_lock_irq(&callback_lock);
+ cpumask_copy(cp->effective_cpus, new_cpus);
+- spin_unlock_irq(&callback_lock);
++ raw_spin_unlock_irq(&callback_lock);
+
+ WARN_ON(!cgroup_subsys_on_dfl(cpuset_cgrp_subsys) &&
+ !cpumask_equal(cp->cpus_allowed, cp->effective_cpus));
+@@ -974,9 +974,9 @@ static int update_cpumask(struct cpuset
+ if (retval < 0)
+ return retval;
+
+- spin_lock_irq(&callback_lock);
++ raw_spin_lock_irq(&callback_lock);
+ cpumask_copy(cs->cpus_allowed, trialcs->cpus_allowed);
+- spin_unlock_irq(&callback_lock);
++ raw_spin_unlock_irq(&callback_lock);
+
+ /* use trialcs->cpus_allowed as a temp variable */
+ update_cpumasks_hier(cs, trialcs->cpus_allowed);
+@@ -1176,9 +1176,9 @@ static void update_nodemasks_hier(struct
+ continue;
+ rcu_read_unlock();
+
+- spin_lock_irq(&callback_lock);
++ raw_spin_lock_irq(&callback_lock);
+ cp->effective_mems = *new_mems;
+- spin_unlock_irq(&callback_lock);
++ raw_spin_unlock_irq(&callback_lock);
+
+ WARN_ON(!cgroup_subsys_on_dfl(cpuset_cgrp_subsys) &&
+ !nodes_equal(cp->mems_allowed, cp->effective_mems));
+@@ -1246,9 +1246,9 @@ static int update_nodemask(struct cpuset
+ if (retval < 0)
+ goto done;
+
+- spin_lock_irq(&callback_lock);
++ raw_spin_lock_irq(&callback_lock);
+ cs->mems_allowed = trialcs->mems_allowed;
+- spin_unlock_irq(&callback_lock);
++ raw_spin_unlock_irq(&callback_lock);
+
+ /* use trialcs->mems_allowed as a temp variable */
+ update_nodemasks_hier(cs, &trialcs->mems_allowed);
+@@ -1339,9 +1339,9 @@ static int update_flag(cpuset_flagbits_t
+ spread_flag_changed = ((is_spread_slab(cs) != is_spread_slab(trialcs))
+ || (is_spread_page(cs) != is_spread_page(trialcs)));
+
+- spin_lock_irq(&callback_lock);
++ raw_spin_lock_irq(&callback_lock);
+ cs->flags = trialcs->flags;
+- spin_unlock_irq(&callback_lock);
++ raw_spin_unlock_irq(&callback_lock);
+
+ if (!cpumask_empty(trialcs->cpus_allowed) && balance_flag_changed)
+ rebuild_sched_domains_locked();
+@@ -1756,7 +1756,7 @@ static int cpuset_common_seq_show(struct
+ cpuset_filetype_t type = seq_cft(sf)->private;
+ int ret = 0;
+
+- spin_lock_irq(&callback_lock);
++ raw_spin_lock_irq(&callback_lock);
+
+ switch (type) {
+ case FILE_CPULIST:
+@@ -1775,7 +1775,7 @@ static int cpuset_common_seq_show(struct
+ ret = -EINVAL;
+ }
+
+- spin_unlock_irq(&callback_lock);
++ raw_spin_unlock_irq(&callback_lock);
+ return ret;
+ }
+
+@@ -1989,12 +1989,12 @@ static int cpuset_css_online(struct cgro
+
+ cpuset_inc();
+
+- spin_lock_irq(&callback_lock);
++ raw_spin_lock_irq(&callback_lock);
+ if (cgroup_subsys_on_dfl(cpuset_cgrp_subsys)) {
+ cpumask_copy(cs->effective_cpus, parent->effective_cpus);
+ cs->effective_mems = parent->effective_mems;
+ }
+- spin_unlock_irq(&callback_lock);
++ raw_spin_unlock_irq(&callback_lock);
+
+ if (!test_bit(CGRP_CPUSET_CLONE_CHILDREN, &css->cgroup->flags))
+ goto out_unlock;
+@@ -2021,12 +2021,12 @@ static int cpuset_css_online(struct cgro
+ }
+ rcu_read_unlock();
+
+- spin_lock_irq(&callback_lock);
++ raw_spin_lock_irq(&callback_lock);
+ cs->mems_allowed = parent->mems_allowed;
+ cs->effective_mems = parent->mems_allowed;
+ cpumask_copy(cs->cpus_allowed, parent->cpus_allowed);
+ cpumask_copy(cs->effective_cpus, parent->cpus_allowed);
+- spin_unlock_irq(&callback_lock);
++ raw_spin_unlock_irq(&callback_lock);
+ out_unlock:
+ mutex_unlock(&cpuset_mutex);
+ return 0;
+@@ -2065,7 +2065,7 @@ static void cpuset_css_free(struct cgrou
+ static void cpuset_bind(struct cgroup_subsys_state *root_css)
+ {
+ mutex_lock(&cpuset_mutex);
+- spin_lock_irq(&callback_lock);
++ raw_spin_lock_irq(&callback_lock);
+
+ if (cgroup_subsys_on_dfl(cpuset_cgrp_subsys)) {
+ cpumask_copy(top_cpuset.cpus_allowed, cpu_possible_mask);
+@@ -2076,7 +2076,7 @@ static void cpuset_bind(struct cgroup_su
+ top_cpuset.mems_allowed = top_cpuset.effective_mems;
+ }
+
+- spin_unlock_irq(&callback_lock);
++ raw_spin_unlock_irq(&callback_lock);
+ mutex_unlock(&cpuset_mutex);
+ }
+
+@@ -2177,12 +2177,12 @@ hotplug_update_tasks_legacy(struct cpuse
+ {
+ bool is_empty;
+
+- spin_lock_irq(&callback_lock);
++ raw_spin_lock_irq(&callback_lock);
+ cpumask_copy(cs->cpus_allowed, new_cpus);
+ cpumask_copy(cs->effective_cpus, new_cpus);
+ cs->mems_allowed = *new_mems;
+ cs->effective_mems = *new_mems;
+- spin_unlock_irq(&callback_lock);
++ raw_spin_unlock_irq(&callback_lock);
+
+ /*
+ * Don't call update_tasks_cpumask() if the cpuset becomes empty,
+@@ -2219,10 +2219,10 @@ hotplug_update_tasks(struct cpuset *cs,
+ if (nodes_empty(*new_mems))
+ *new_mems = parent_cs(cs)->effective_mems;
+
+- spin_lock_irq(&callback_lock);
++ raw_spin_lock_irq(&callback_lock);
+ cpumask_copy(cs->effective_cpus, new_cpus);
+ cs->effective_mems = *new_mems;
+- spin_unlock_irq(&callback_lock);
++ raw_spin_unlock_irq(&callback_lock);
+
+ if (cpus_updated)
+ update_tasks_cpumask(cs);
+@@ -2308,21 +2308,21 @@ static void cpuset_hotplug_workfn(struct
+
+ /* synchronize cpus_allowed to cpu_active_mask */
+ if (cpus_updated) {
+- spin_lock_irq(&callback_lock);
++ raw_spin_lock_irq(&callback_lock);
+ if (!on_dfl)
+ cpumask_copy(top_cpuset.cpus_allowed, &new_cpus);
+ cpumask_copy(top_cpuset.effective_cpus, &new_cpus);
+- spin_unlock_irq(&callback_lock);
++ raw_spin_unlock_irq(&callback_lock);
+ /* we don't mess with cpumasks of tasks in top_cpuset */
+ }
+
+ /* synchronize mems_allowed to N_MEMORY */
+ if (mems_updated) {
+- spin_lock_irq(&callback_lock);
++ raw_spin_lock_irq(&callback_lock);
+ if (!on_dfl)
+ top_cpuset.mems_allowed = new_mems;
+ top_cpuset.effective_mems = new_mems;
+- spin_unlock_irq(&callback_lock);
++ raw_spin_unlock_irq(&callback_lock);
+ update_tasks_nodemask(&top_cpuset);
+ }
+
+@@ -2420,11 +2420,11 @@ void cpuset_cpus_allowed(struct task_str
+ {
+ unsigned long flags;
+
+- spin_lock_irqsave(&callback_lock, flags);
++ raw_spin_lock_irqsave(&callback_lock, flags);
+ rcu_read_lock();
+ guarantee_online_cpus(task_cs(tsk), pmask);
+ rcu_read_unlock();
+- spin_unlock_irqrestore(&callback_lock, flags);
++ raw_spin_unlock_irqrestore(&callback_lock, flags);
+ }
+
+ void cpuset_cpus_allowed_fallback(struct task_struct *tsk)
+@@ -2472,11 +2472,11 @@ nodemask_t cpuset_mems_allowed(struct ta
+ nodemask_t mask;
+ unsigned long flags;
+
+- spin_lock_irqsave(&callback_lock, flags);
++ raw_spin_lock_irqsave(&callback_lock, flags);
+ rcu_read_lock();
+ guarantee_online_mems(task_cs(tsk), &mask);
+ rcu_read_unlock();
+- spin_unlock_irqrestore(&callback_lock, flags);
++ raw_spin_unlock_irqrestore(&callback_lock, flags);
+
+ return mask;
+ }
+@@ -2568,14 +2568,14 @@ bool __cpuset_node_allowed(int node, gfp
+ return true;
+
+ /* Not hardwall and node outside mems_allowed: scan up cpusets */
+- spin_lock_irqsave(&callback_lock, flags);
++ raw_spin_lock_irqsave(&callback_lock, flags);
+
+ rcu_read_lock();
+ cs = nearest_hardwall_ancestor(task_cs(current));
+ allowed = node_isset(node, cs->mems_allowed);
+ rcu_read_unlock();
+
+- spin_unlock_irqrestore(&callback_lock, flags);
++ raw_spin_unlock_irqrestore(&callback_lock, flags);
+ return allowed;
+ }
+
diff --git a/debian/patches/features/all/rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch b/debian/patches/features/all/rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch
index 2a95cfe..be0511a 100644
--- a/debian/patches/features/all/rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch
+++ b/debian/patches/features/all/rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 21 Feb 2014 17:24:04 +0100
Subject: crypto: Reduce preempt disabled regions, more algos
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Don Estabrook reported
| kernel: WARNING: CPU: 2 PID: 858 at kernel/sched/core.c:2428 migrate_disable+0xed/0x100()
diff --git a/debian/patches/features/all/rt/debugobjects-rt.patch b/debian/patches/features/all/rt/debugobjects-rt.patch
index 6ca7597..8c470af 100644
--- a/debian/patches/features/all/rt/debugobjects-rt.patch
+++ b/debian/patches/features/all/rt/debugobjects-rt.patch
@@ -1,7 +1,7 @@
Subject: debugobjects: Make RT aware
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 17 Jul 2011 21:41:35 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Avoid filling the pool / allocating memory with irqs off().
diff --git a/debian/patches/features/all/rt/dm-make-rt-aware.patch b/debian/patches/features/all/rt/dm-make-rt-aware.patch
index 265a99d..18ebf79 100644
--- a/debian/patches/features/all/rt/dm-make-rt-aware.patch
+++ b/debian/patches/features/all/rt/dm-make-rt-aware.patch
@@ -1,7 +1,7 @@
Subject: dm: Make rt aware
From: Thomas Gleixner <tglx at linutronix.de>
Date: Mon, 14 Nov 2011 23:06:09 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Use the BUG_ON_NORT variant for the irq_disabled() checks. RT has
interrupts legitimately enabled here as we cant deadlock against the
@@ -16,7 +16,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/drivers/md/dm-rq.c
+++ b/drivers/md/dm-rq.c
-@@ -832,7 +832,7 @@ static void dm_old_request_fn(struct req
+@@ -838,7 +838,7 @@ static void dm_old_request_fn(struct req
/* Establish tio->ti before queuing work (map_tio_request) */
tio->ti = ti;
kthread_queue_work(&md->kworker, &tio->work);
diff --git a/debian/patches/features/all/rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch b/debian/patches/features/all/rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch
index b429c90..79bfaf1 100644
--- a/debian/patches/features/all/rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch
+++ b/debian/patches/features/all/rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch
@@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti at gmail.com>
Date: Thu, 31 Mar 2016 04:08:28 +0200
Subject: [PATCH] drivers/block/zram: Replace bit spinlocks with rtmutex
for -rt
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
They're nondeterministic, and lead to ___might_sleep() splats in -rt.
OTOH, they're a lot less wasteful than an rtmutex per page.
@@ -16,7 +16,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
-@@ -519,6 +519,8 @@ static struct zram_meta *zram_meta_alloc
+@@ -528,6 +528,8 @@ static struct zram_meta *zram_meta_alloc
goto out_error;
}
@@ -25,7 +25,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
return meta;
out_error:
-@@ -567,12 +569,12 @@ static int zram_decompress_page(struct z
+@@ -576,12 +578,12 @@ static int zram_decompress_page(struct z
unsigned long handle;
unsigned int size;
@@ -40,7 +40,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
clear_page(mem);
return 0;
}
-@@ -587,7 +589,7 @@ static int zram_decompress_page(struct z
+@@ -596,7 +598,7 @@ static int zram_decompress_page(struct z
zcomp_stream_put(zram->comp);
}
zs_unmap_object(meta->mem_pool, handle);
@@ -49,7 +49,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
/* Should NEVER happen. Return bio error if it does. */
if (unlikely(ret)) {
-@@ -607,14 +609,14 @@ static int zram_bvec_read(struct zram *z
+@@ -616,14 +618,14 @@ static int zram_bvec_read(struct zram *z
struct zram_meta *meta = zram->meta;
page = bvec->bv_page;
@@ -67,7 +67,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
if (is_partial_io(bvec))
/* Use a temporary buffer to decompress the page */
-@@ -691,10 +693,10 @@ static int zram_bvec_write(struct zram *
+@@ -700,10 +702,10 @@ static int zram_bvec_write(struct zram *
if (user_mem)
kunmap_atomic(user_mem);
/* Free memory associated with this sector now. */
@@ -80,7 +80,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
atomic64_inc(&zram->stats.zero_pages);
ret = 0;
-@@ -785,12 +787,12 @@ static int zram_bvec_write(struct zram *
+@@ -794,12 +796,12 @@ static int zram_bvec_write(struct zram *
* Free memory associated with this sector
* before overwriting unused sectors.
*/
@@ -95,7 +95,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
/* Update stats */
atomic64_add(clen, &zram->stats.compr_data_size);
-@@ -833,9 +835,9 @@ static void zram_bio_discard(struct zram
+@@ -842,9 +844,9 @@ static void zram_bio_discard(struct zram
}
while (n >= PAGE_SIZE) {
@@ -107,7 +107,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
atomic64_inc(&zram->stats.notify_free);
index++;
n -= PAGE_SIZE;
-@@ -964,9 +966,9 @@ static void zram_slot_free_notify(struct
+@@ -973,9 +975,9 @@ static void zram_slot_free_notify(struct
zram = bdev->bd_disk->private_data;
meta = zram->meta;
diff --git a/debian/patches/features/all/rt/drivers-net-8139-disable-irq-nosync.patch b/debian/patches/features/all/rt/drivers-net-8139-disable-irq-nosync.patch
index ee0a244..b2cfc5f 100644
--- a/debian/patches/features/all/rt/drivers-net-8139-disable-irq-nosync.patch
+++ b/debian/patches/features/all/rt/drivers-net-8139-disable-irq-nosync.patch
@@ -1,7 +1,7 @@
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 3 Jul 2009 08:29:24 -0500
Subject: drivers/net: Use disable_irq_nosync() in 8139too
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Use disable_irq_nosync() instead of disable_irq() as this might be
called in atomic context with netpoll.
diff --git a/debian/patches/features/all/rt/drivers-net-vortex-fix-locking-issues.patch b/debian/patches/features/all/rt/drivers-net-vortex-fix-locking-issues.patch
index 4b6d2da..1464d20 100644
--- a/debian/patches/features/all/rt/drivers-net-vortex-fix-locking-issues.patch
+++ b/debian/patches/features/all/rt/drivers-net-vortex-fix-locking-issues.patch
@@ -1,7 +1,7 @@
From: Steven Rostedt <rostedt at goodmis.org>
Date: Fri, 3 Jul 2009 08:30:00 -0500
Subject: drivers/net: vortex fix locking issues
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Argh, cut and paste wasn't enough...
diff --git a/debian/patches/features/all/rt/drivers-random-reduce-preempt-disabled-region.patch b/debian/patches/features/all/rt/drivers-random-reduce-preempt-disabled-region.patch
index 61649db..a0cc84c 100644
--- a/debian/patches/features/all/rt/drivers-random-reduce-preempt-disabled-region.patch
+++ b/debian/patches/features/all/rt/drivers-random-reduce-preempt-disabled-region.patch
@@ -1,7 +1,7 @@
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 3 Jul 2009 08:29:30 -0500
Subject: drivers: random: Reduce preempt disabled region
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
No need to keep preemption disabled across the whole function.
diff --git a/debian/patches/features/all/rt/drivers-tty-fix-omap-lock-crap.patch b/debian/patches/features/all/rt/drivers-tty-fix-omap-lock-crap.patch
index bfe4685..9f6d4b7 100644
--- a/debian/patches/features/all/rt/drivers-tty-fix-omap-lock-crap.patch
+++ b/debian/patches/features/all/rt/drivers-tty-fix-omap-lock-crap.patch
@@ -1,7 +1,7 @@
Subject: tty/serial/omap: Make the locking RT aware
From: Thomas Gleixner <tglx at linutronix.de>
Date: Thu, 28 Jul 2011 13:32:57 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The lock is a sleeping lock and local_irq_save() is not the
optimsation we are looking for. Redo it to make it work on -RT and
diff --git a/debian/patches/features/all/rt/drivers-tty-pl011-irq-disable-madness.patch b/debian/patches/features/all/rt/drivers-tty-pl011-irq-disable-madness.patch
index e368bdb..fcdb18e 100644
--- a/debian/patches/features/all/rt/drivers-tty-pl011-irq-disable-madness.patch
+++ b/debian/patches/features/all/rt/drivers-tty-pl011-irq-disable-madness.patch
@@ -1,7 +1,7 @@
Subject: tty/serial/pl011: Make the locking work on RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 08 Jan 2013 21:36:51 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The lock is a sleeping lock and local_irq_save() is not the optimsation
we are looking for. Redo it to make it work on -RT and non-RT.
diff --git a/debian/patches/features/all/rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch b/debian/patches/features/all/rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch
index f54003a..dff8554 100644
--- a/debian/patches/features/all/rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch
+++ b/debian/patches/features/all/rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch
@@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti at gmail.com>
Date: Thu, 20 Oct 2016 11:15:22 +0200
Subject: [PATCH] drivers/zram: Don't disable preemption in
zcomp_stream_get/put()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
In v4.7, the driver switched to percpu compression streams, disabling
preemption via get/put_cpu_ptr(). Use a per-zcomp_strm lock here. We
@@ -63,7 +63,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
/* dynamic per-device compression frontend */
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
-@@ -568,6 +568,7 @@ static int zram_decompress_page(struct z
+@@ -577,6 +577,7 @@ static int zram_decompress_page(struct z
struct zram_meta *meta = zram->meta;
unsigned long handle;
unsigned int size;
@@ -71,7 +71,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
zram_lock_table(&meta->table[index]);
handle = meta->table[index].handle;
-@@ -579,16 +580,15 @@ static int zram_decompress_page(struct z
+@@ -588,16 +589,15 @@ static int zram_decompress_page(struct z
return 0;
}
diff --git a/debian/patches/features/all/rt/drm-i915-drop-trace_i915_gem_ring_dispatch-onrt.patch b/debian/patches/features/all/rt/drm-i915-drop-trace_i915_gem_ring_dispatch-onrt.patch
index 0a22a29..6d96e36 100644
--- a/debian/patches/features/all/rt/drm-i915-drop-trace_i915_gem_ring_dispatch-onrt.patch
+++ b/debian/patches/features/all/rt/drm-i915-drop-trace_i915_gem_ring_dispatch-onrt.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 25 Apr 2013 18:12:52 +0200
Subject: drm/i915: drop trace_i915_gem_ring_dispatch on rt
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
This tracepoint is responsible for:
diff --git a/debian/patches/features/all/rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch b/debian/patches/features/all/rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch
index 74faa6e..b40d099 100644
--- a/debian/patches/features/all/rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch
+++ b/debian/patches/features/all/rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch
@@ -1,7 +1,7 @@
Subject: drm,i915: Use local_lock/unlock_irq() in intel_pipe_update_start/end()
From: Mike Galbraith <umgwanakikbuti at gmail.com>
Date: Sat, 27 Feb 2016 09:01:42 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
[ 8.014039] BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:918
diff --git a/debian/patches/features/all/rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch b/debian/patches/features/all/rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch
index 1f5ef82..adfec61 100644
--- a/debian/patches/features/all/rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch
+++ b/debian/patches/features/all/rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch
@@ -1,7 +1,7 @@
Subject: drm,radeon,i915: Use preempt_disable/enable_rt() where recommended
From: Mike Galbraith <umgwanakikbuti at gmail.com>
Date: Sat, 27 Feb 2016 08:09:11 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
DRM folks identified the spots, so use them.
diff --git a/debian/patches/features/all/rt/epoll-use-get-cpu-light.patch b/debian/patches/features/all/rt/epoll-use-get-cpu-light.patch
index f05b19c..d8d9330 100644
--- a/debian/patches/features/all/rt/epoll-use-get-cpu-light.patch
+++ b/debian/patches/features/all/rt/epoll-use-get-cpu-light.patch
@@ -1,7 +1,7 @@
Subject: fs/epoll: Do not disable preemption on RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 08 Jul 2011 16:35:35 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
ep_call_nested() takes a sleeping lock so we can't disable preemption.
The light version is enough since ep_call_nested() doesn't mind beeing
diff --git a/debian/patches/features/all/rt/fs-aio-simple-simple-work.patch b/debian/patches/features/all/rt/fs-aio-simple-simple-work.patch
index 996a77c..0a29d94 100644
--- a/debian/patches/features/all/rt/fs-aio-simple-simple-work.patch
+++ b/debian/patches/features/all/rt/fs-aio-simple-simple-work.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Mon, 16 Feb 2015 18:49:10 +0100
Subject: fs/aio: simple simple work
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:768
|in_atomic(): 1, irqs_disabled(): 0, pid: 26, name: rcuos/2
diff --git a/debian/patches/features/all/rt/fs-block-rt-support.patch b/debian/patches/features/all/rt/fs-block-rt-support.patch
index 69e101a..2fa3f4f 100644
--- a/debian/patches/features/all/rt/fs-block-rt-support.patch
+++ b/debian/patches/features/all/rt/fs-block-rt-support.patch
@@ -1,7 +1,7 @@
Subject: block: Turn off warning which is bogus on RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 14 Jun 2011 17:05:09 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
On -RT the context is always with IRQs enabled. Ignore this warning on -RT.
diff --git a/debian/patches/features/all/rt/fs-dcache-include-wait.h.patch b/debian/patches/features/all/rt/fs-dcache-include-wait.h.patch
index 119d327..c45688c 100644
--- a/debian/patches/features/all/rt/fs-dcache-include-wait.h.patch
+++ b/debian/patches/features/all/rt/fs-dcache-include-wait.h.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 14 Sep 2016 11:55:23 +0200
Subject: fs/dcache: include wait.h
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Since commit d9171b934526 ("parallel lookups machinery, part 4 (and
last)") dcache.h is using but does not include wait.h. It works as long
diff --git a/debian/patches/features/all/rt/fs-dcache-init-in_lookup_hashtable.patch b/debian/patches/features/all/rt/fs-dcache-init-in_lookup_hashtable.patch
index e46f036..ec50e81 100644
--- a/debian/patches/features/all/rt/fs-dcache-init-in_lookup_hashtable.patch
+++ b/debian/patches/features/all/rt/fs-dcache-init-in_lookup_hashtable.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 14 Sep 2016 17:57:03 +0200
Subject: [PATCH] fs/dcache: init in_lookup_hashtable
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
in_lookup_hashtable was introduced in commit 94bdd655caba ("parallel
lookups machinery, part 3") and never initialized but since it is in
@@ -14,7 +14,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
--- a/fs/dcache.c
+++ b/fs/dcache.c
-@@ -3601,6 +3601,11 @@ EXPORT_SYMBOL(d_genocide);
+@@ -3604,6 +3604,11 @@ EXPORT_SYMBOL(d_genocide);
void __init vfs_caches_init_early(void)
{
diff --git a/debian/patches/features/all/rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch b/debian/patches/features/all/rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch
index 717fac9..e64295a 100644
--- a/debian/patches/features/all/rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch
+++ b/debian/patches/features/all/rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch
@@ -1,7 +1,7 @@
Subject: fs: dcache: Use cpu_chill() in trylock loops
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 07 Mar 2012 21:00:34 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Retry loops on RT might loop forever when the modifying side was
preempted. Use cpu_chill() instead of cpu_relax() to let the system
@@ -78,7 +78,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
goto repeat;
}
}
-@@ -2321,7 +2333,7 @@ void d_delete(struct dentry * dentry)
+@@ -2324,7 +2336,7 @@ void d_delete(struct dentry * dentry)
if (dentry->d_lockref.count == 1) {
if (!spin_trylock(&inode->i_lock)) {
spin_unlock(&dentry->d_lock);
diff --git a/debian/patches/features/all/rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch b/debian/patches/features/all/rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch
index c8ceaf6..8f200f3 100644
--- a/debian/patches/features/all/rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch
+++ b/debian/patches/features/all/rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 14 Sep 2016 14:35:49 +0200
Subject: [PATCH] fs/dcache: use swait_queue instead of waitqueue
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
__d_lookup_done() invokes wake_up_all() while holding a hlist_bl_lock()
which disables preemption. As a workaround convert it to swait.
@@ -34,7 +34,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
--- a/fs/dcache.c
+++ b/fs/dcache.c
-@@ -2393,21 +2393,24 @@ static inline void end_dir_add(struct in
+@@ -2396,21 +2396,24 @@ static inline void end_dir_add(struct in
static void d_wait_lookup(struct dentry *dentry)
{
@@ -70,7 +70,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
{
unsigned int hash = name->hash;
struct hlist_bl_head *b = in_lookup_hash(parent, hash);
-@@ -2516,7 +2519,7 @@ void __d_lookup_done(struct dentry *dent
+@@ -2519,7 +2522,7 @@ void __d_lookup_done(struct dentry *dent
hlist_bl_lock(b);
dentry->d_flags &= ~DCACHE_PAR_LOOKUP;
__hlist_bl_del(&dentry->d_u.d_in_lookup_hash);
@@ -121,7 +121,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
struct dentry *dentry;
struct dentry *alias;
struct inode *dir = d_inode(parent);
-@@ -1498,7 +1498,7 @@ int nfs_atomic_open(struct inode *dir, s
+@@ -1487,7 +1487,7 @@ int nfs_atomic_open(struct inode *dir, s
struct file *file, unsigned open_flags,
umode_t mode, int *opened)
{
diff --git a/debian/patches/features/all/rt/fs-jbd-replace-bh_state-lock.patch b/debian/patches/features/all/rt/fs-jbd-replace-bh_state-lock.patch
index 7569635..1acbd4a 100644
--- a/debian/patches/features/all/rt/fs-jbd-replace-bh_state-lock.patch
+++ b/debian/patches/features/all/rt/fs-jbd-replace-bh_state-lock.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 18 Mar 2011 10:11:25 +0100
Subject: fs: jbd/jbd2: Make state lock and journal head lock rt safe
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
bit_spin_locks break under RT.
diff --git a/debian/patches/features/all/rt/fs-jbd2-pull-your-plug-when-waiting-for-space.patch b/debian/patches/features/all/rt/fs-jbd2-pull-your-plug-when-waiting-for-space.patch
index aa2bfb9..16a85ff 100644
--- a/debian/patches/features/all/rt/fs-jbd2-pull-your-plug-when-waiting-for-space.patch
+++ b/debian/patches/features/all/rt/fs-jbd2-pull-your-plug-when-waiting-for-space.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Mon, 17 Feb 2014 17:30:03 +0100
Subject: fs: jbd2: pull your plug when waiting for space
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Two cps in parallel managed to stall the the ext4 fs. It seems that
journal code is either waiting for locks or sleeping waiting for
diff --git a/debian/patches/features/all/rt/fs-namespace-preemption-fix.patch b/debian/patches/features/all/rt/fs-namespace-preemption-fix.patch
index 76311ea..c1daf22 100644
--- a/debian/patches/features/all/rt/fs-namespace-preemption-fix.patch
+++ b/debian/patches/features/all/rt/fs-namespace-preemption-fix.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 19 Jul 2009 08:44:27 -0500
Subject: fs: namespace preemption fix
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
On RT we cannot loop with preemption disabled here as
mnt_make_readonly() might have been preempted. We can safely enable
diff --git a/debian/patches/features/all/rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch b/debian/patches/features/all/rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch
index 1880192..1eee032 100644
--- a/debian/patches/features/all/rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch
+++ b/debian/patches/features/all/rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 15 Sep 2016 10:51:27 +0200
Subject: [PATCH] fs/nfs: turn rmdir_sem into a semaphore
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The RW semaphore had a reader side which used the _non_owner version
because it most likely took the reader lock in one thread and released it
@@ -22,7 +22,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
-@@ -1813,7 +1813,11 @@ int nfs_rmdir(struct inode *dir, struct
+@@ -1802,7 +1802,11 @@ int nfs_rmdir(struct inode *dir, struct
trace_nfs_rmdir_enter(dir, dentry);
if (d_really_is_positive(dentry)) {
@@ -34,7 +34,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
error = NFS_PROTO(dir)->rmdir(dir, &dentry->d_name);
/* Ensure the VFS deletes this inode */
switch (error) {
-@@ -1823,7 +1827,11 @@ int nfs_rmdir(struct inode *dir, struct
+@@ -1812,7 +1816,11 @@ int nfs_rmdir(struct inode *dir, struct
case -ENOENT:
nfs_dentry_handle_enoent(dentry);
}
diff --git a/debian/patches/features/all/rt/fs-ntfs-disable-interrupt-non-rt.patch b/debian/patches/features/all/rt/fs-ntfs-disable-interrupt-non-rt.patch
index bad318f..5f70a8d 100644
--- a/debian/patches/features/all/rt/fs-ntfs-disable-interrupt-non-rt.patch
+++ b/debian/patches/features/all/rt/fs-ntfs-disable-interrupt-non-rt.patch
@@ -1,7 +1,7 @@
From: Mike Galbraith <efault at gmx.de>
Date: Fri, 3 Jul 2009 08:44:12 -0500
Subject: fs: ntfs: disable interrupt only on !RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
On Sat, 2007-10-27 at 11:44 +0200, Ingo Molnar wrote:
> * Nick Piggin <nickpiggin at yahoo.com.au> wrote:
diff --git a/debian/patches/features/all/rt/fs-replace-bh_uptodate_lock-for-rt.patch b/debian/patches/features/all/rt/fs-replace-bh_uptodate_lock-for-rt.patch
index 760ef0b..34cc30b 100644
--- a/debian/patches/features/all/rt/fs-replace-bh_uptodate_lock-for-rt.patch
+++ b/debian/patches/features/all/rt/fs-replace-bh_uptodate_lock-for-rt.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 18 Mar 2011 09:18:52 +0100
Subject: buffer_head: Replace bh_uptodate_lock for -rt
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Wrap the bit_spin_lock calls into a separate inline and add the RT
replacements with a real spinlock.
diff --git a/debian/patches/features/all/rt/ftrace-Fix-trace-header-alignment.patch b/debian/patches/features/all/rt/ftrace-Fix-trace-header-alignment.patch
index 9227ff3..edaca40 100644
--- a/debian/patches/features/all/rt/ftrace-Fix-trace-header-alignment.patch
+++ b/debian/patches/features/all/rt/ftrace-Fix-trace-header-alignment.patch
@@ -1,7 +1,7 @@
From: Mike Galbraith <umgwanakikbuti at gmail.com>
Date: Sun, 16 Oct 2016 05:08:30 +0200
Subject: [PATCH] ftrace: Fix trace header alignment
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Line up helper arrows to the right column.
diff --git a/debian/patches/features/all/rt/ftrace-migrate-disable-tracing.patch b/debian/patches/features/all/rt/ftrace-migrate-disable-tracing.patch
index f52afcd..1f1ce2c 100644
--- a/debian/patches/features/all/rt/ftrace-migrate-disable-tracing.patch
+++ b/debian/patches/features/all/rt/ftrace-migrate-disable-tracing.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 17 Jul 2011 21:56:42 +0200
Subject: trace: Add migrate-disabled counter to tracing output
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
---
diff --git a/debian/patches/features/all/rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch b/debian/patches/features/all/rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch
index 14ba250..257850d 100644
--- a/debian/patches/features/all/rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch
+++ b/debian/patches/features/all/rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 1 Mar 2013 11:17:42 +0100
Subject: futex: Ensure lock/unlock symetry versus pi_lock and hash bucket lock
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
In exit_pi_state_list() we have the following locking construct:
diff --git a/debian/patches/features/all/rt/futex-requeue-pi-fix.patch b/debian/patches/features/all/rt/futex-requeue-pi-fix.patch
index b0b53f8..0087b34 100644
--- a/debian/patches/features/all/rt/futex-requeue-pi-fix.patch
+++ b/debian/patches/features/all/rt/futex-requeue-pi-fix.patch
@@ -1,7 +1,7 @@
From: Steven Rostedt <rostedt at goodmis.org>
Date: Tue, 14 Jul 2015 14:26:34 +0200
Subject: futex: Fix bug on when a requeued RT task times out
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Requeue with timeout causes a bug with PREEMPT_RT_FULL.
diff --git a/debian/patches/features/all/rt/genirq-disable-irqpoll-on-rt.patch b/debian/patches/features/all/rt/genirq-disable-irqpoll-on-rt.patch
index c08f042..5dae83c 100644
--- a/debian/patches/features/all/rt/genirq-disable-irqpoll-on-rt.patch
+++ b/debian/patches/features/all/rt/genirq-disable-irqpoll-on-rt.patch
@@ -1,7 +1,7 @@
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 3 Jul 2009 08:29:57 -0500
Subject: genirq: Disable irqpoll on -rt
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Creates long latencies for no value
diff --git a/debian/patches/features/all/rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch b/debian/patches/features/all/rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch
index 2d79fe6..d35ecc2 100644
--- a/debian/patches/features/all/rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch
+++ b/debian/patches/features/all/rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 21 Aug 2013 17:48:46 +0200
Subject: genirq: Do not invoke the affinity callback via a workqueue on RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Joe Korty reported, that __irq_set_affinity_locked() schedules a
workqueue while holding a rawlock which results in a might_sleep()
diff --git a/debian/patches/features/all/rt/genirq-force-threading.patch b/debian/patches/features/all/rt/genirq-force-threading.patch
index 40173a8..0598b50 100644
--- a/debian/patches/features/all/rt/genirq-force-threading.patch
+++ b/debian/patches/features/all/rt/genirq-force-threading.patch
@@ -1,7 +1,7 @@
Subject: genirq: Force interrupt thread on RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 03 Apr 2011 11:57:29 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Force threaded_irqs and optimize the code (force_irqthreads) in regard
to this.
diff --git a/debian/patches/features/all/rt/genirq-update-irq_set_irqchip_state-documentation.patch b/debian/patches/features/all/rt/genirq-update-irq_set_irqchip_state-documentation.patch
index 0e8e0c2..62e3359 100644
--- a/debian/patches/features/all/rt/genirq-update-irq_set_irqchip_state-documentation.patch
+++ b/debian/patches/features/all/rt/genirq-update-irq_set_irqchip_state-documentation.patch
@@ -1,7 +1,7 @@
From: Josh Cartwright <joshc at ni.com>
Date: Thu, 11 Feb 2016 11:54:00 -0600
Subject: genirq: update irq_set_irqchip_state documentation
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
On -rt kernels, the use of migrate_disable()/migrate_enable() is
sufficient to guarantee a task isn't moved to another CPU. Update the
diff --git a/debian/patches/features/all/rt/gpu_don_t_check_for_the_lock_owner.patch b/debian/patches/features/all/rt/gpu_don_t_check_for_the_lock_owner.patch
index 7627c9c..1dccdc2 100644
--- a/debian/patches/features/all/rt/gpu_don_t_check_for_the_lock_owner.patch
+++ b/debian/patches/features/all/rt/gpu_don_t_check_for_the_lock_owner.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Tue, 14 Jul 2015 14:26:34 +0200
Subject: gpu: don't check for the lock owner.
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
---
diff --git a/debian/patches/features/all/rt/hotplug-Use-set_cpus_allowed_ptr-in-sync_unplug_thre.patch b/debian/patches/features/all/rt/hotplug-Use-set_cpus_allowed_ptr-in-sync_unplug_thre.patch
index 3816cc3..323fbe2 100644
--- a/debian/patches/features/all/rt/hotplug-Use-set_cpus_allowed_ptr-in-sync_unplug_thre.patch
+++ b/debian/patches/features/all/rt/hotplug-Use-set_cpus_allowed_ptr-in-sync_unplug_thre.patch
@@ -1,7 +1,7 @@
From: Mike Galbraith <umgwanakikbuti at gmail.com>
Date: Tue, 24 Mar 2015 08:14:49 +0100
Subject: hotplug: Use set_cpus_allowed_ptr() in sync_unplug_thread()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
do_set_cpus_allowed() is not safe vs ->sched_class change.
diff --git a/debian/patches/features/all/rt/hotplug-light-get-online-cpus.patch b/debian/patches/features/all/rt/hotplug-light-get-online-cpus.patch
index 2550619..fec4636 100644
--- a/debian/patches/features/all/rt/hotplug-light-get-online-cpus.patch
+++ b/debian/patches/features/all/rt/hotplug-light-get-online-cpus.patch
@@ -1,7 +1,7 @@
Subject: hotplug: Lightweight get online cpus
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 15 Jun 2011 12:36:06 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
get_online_cpus() is a heavy weight function which involves a global
mutex. migrate_disable() wants a simpler construct which prevents only
@@ -19,7 +19,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
-@@ -180,9 +180,6 @@ static inline void cpu_notifier_register
+@@ -173,9 +173,6 @@ static inline void cpu_notifier_register
#endif /* CONFIG_SMP */
extern struct bus_type cpu_subsys;
@@ -29,7 +29,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
#ifdef CONFIG_HOTPLUG_CPU
/* Stop CPUs going up and down. */
-@@ -192,6 +189,8 @@ extern void get_online_cpus(void);
+@@ -185,6 +182,8 @@ extern void get_online_cpus(void);
extern void put_online_cpus(void);
extern void cpu_hotplug_disable(void);
extern void cpu_hotplug_enable(void);
@@ -38,7 +38,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
#define hotcpu_notifier(fn, pri) cpu_notifier(fn, pri)
#define __hotcpu_notifier(fn, pri) __cpu_notifier(fn, pri)
#define register_hotcpu_notifier(nb) register_cpu_notifier(nb)
-@@ -209,6 +208,8 @@ static inline void cpu_hotplug_done(void
+@@ -202,6 +201,8 @@ static inline void cpu_hotplug_done(void
#define put_online_cpus() do { } while (0)
#define cpu_hotplug_disable() do { } while (0)
#define cpu_hotplug_enable() do { } while (0)
diff --git a/debian/patches/features/all/rt/hotplug-sync_unplug-no-27-5cn-27-in-task-name.patch b/debian/patches/features/all/rt/hotplug-sync_unplug-no-27-5cn-27-in-task-name.patch
index a5e6d51..b0054cc 100644
--- a/debian/patches/features/all/rt/hotplug-sync_unplug-no-27-5cn-27-in-task-name.patch
+++ b/debian/patches/features/all/rt/hotplug-sync_unplug-no-27-5cn-27-in-task-name.patch
@@ -1,7 +1,7 @@
Subject: hotplug: sync_unplug: No "\n" in task name
From: Yong Zhang <yong.zhang0 at gmail.com>
Date: Sun, 16 Oct 2011 18:56:43 +0800
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Otherwise the output will look a little odd.
diff --git a/debian/patches/features/all/rt/hotplug-use-migrate-disable.patch b/debian/patches/features/all/rt/hotplug-use-migrate-disable.patch
index fc62ea5..ecad8c3 100644
--- a/debian/patches/features/all/rt/hotplug-use-migrate-disable.patch
+++ b/debian/patches/features/all/rt/hotplug-use-migrate-disable.patch
@@ -1,7 +1,7 @@
Subject: hotplug: Use migrate disable on unplug
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 17 Jul 2011 19:35:29 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Migration needs to be disabled accross the unplug handling to make
sure that the unplug thread is off the unplugged cpu.
diff --git a/debian/patches/features/all/rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch b/debian/patches/features/all/rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch
index 0461536..edd459e 100644
--- a/debian/patches/features/all/rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch
+++ b/debian/patches/features/all/rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch
@@ -1,7 +1,7 @@
From: Yang Shi <yang.shi at windriver.com>
Date: Mon, 16 Sep 2013 14:09:19 -0700
Subject: hrtimer: Move schedule_work call to helper thread
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
When run ltp leapsec_timer test, the following call trace is caught:
diff --git a/debian/patches/features/all/rt/hrtimer-enfore-64byte-alignment.patch b/debian/patches/features/all/rt/hrtimer-enfore-64byte-alignment.patch
index 7d4ef77..cc6ced8 100644
--- a/debian/patches/features/all/rt/hrtimer-enfore-64byte-alignment.patch
+++ b/debian/patches/features/all/rt/hrtimer-enfore-64byte-alignment.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 23 Dec 2015 20:57:41 +0100
Subject: hrtimer: enfore 64byte alignment
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The patch "hrtimer: Fixup hrtimer callback changes for preempt-rt" adds
a list_head expired to struct hrtimer_clock_base and with it we run into
diff --git a/debian/patches/features/all/rt/hrtimer-fixup-hrtimer-callback-changes-for-preempt-r.patch b/debian/patches/features/all/rt/hrtimer-fixup-hrtimer-callback-changes-for-preempt-r.patch
index de3eb9c..3906e87 100644
--- a/debian/patches/features/all/rt/hrtimer-fixup-hrtimer-callback-changes-for-preempt-r.patch
+++ b/debian/patches/features/all/rt/hrtimer-fixup-hrtimer-callback-changes-for-preempt-r.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 3 Jul 2009 08:44:31 -0500
Subject: hrtimer: Fixup hrtimer callback changes for preempt-rt
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
In preempt-rt we can not call the callbacks which take sleeping locks
from the timer interrupt context.
@@ -331,7 +331,7 @@ Signed-off-by: Ingo Molnar <mingo at elte.hu>
/* Get the next period (per-CPU) */
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
-@@ -523,6 +523,7 @@ static void watchdog_enable(unsigned int
+@@ -522,6 +522,7 @@ static void watchdog_enable(unsigned int
/* kick off the timer for the hardlockup detector */
hrtimer_init(hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
hrtimer->function = watchdog_timer_fn;
diff --git a/debian/patches/features/all/rt/hrtimers-prepare-full-preemption.patch b/debian/patches/features/all/rt/hrtimers-prepare-full-preemption.patch
index 53a3024..7cbd738 100644
--- a/debian/patches/features/all/rt/hrtimers-prepare-full-preemption.patch
+++ b/debian/patches/features/all/rt/hrtimers-prepare-full-preemption.patch
@@ -1,7 +1,7 @@
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 3 Jul 2009 08:29:34 -0500
Subject: hrtimers: Prepare full preemption
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Make cancellation of a running callback in softirq context safe
against preemption.
diff --git a/debian/patches/features/all/rt/i915-bogus-warning-from-i915-when-running-on-PREEMPT.patch b/debian/patches/features/all/rt/i915-bogus-warning-from-i915-when-running-on-PREEMPT.patch
index b474689..a0cd7a3 100644
--- a/debian/patches/features/all/rt/i915-bogus-warning-from-i915-when-running-on-PREEMPT.patch
+++ b/debian/patches/features/all/rt/i915-bogus-warning-from-i915-when-running-on-PREEMPT.patch
@@ -1,7 +1,7 @@
From: Clark Williams <williams at redhat.com>
Date: Tue, 26 May 2015 10:43:43 -0500
Subject: i915: bogus warning from i915 when running on PREEMPT_RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The i915 driver has a 'WARN_ON(!in_interrupt())' in the display
handler, which whines constanly on the RT kernel (since the interrupt
@@ -19,7 +19,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
-@@ -12142,7 +12142,7 @@ void intel_check_page_flip(struct drm_i9
+@@ -12131,7 +12131,7 @@ void intel_check_page_flip(struct drm_i9
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_flip_work *work;
diff --git a/debian/patches/features/all/rt/ide-use-nort-local-irq-variants.patch b/debian/patches/features/all/rt/ide-use-nort-local-irq-variants.patch
index 6c5bf86..46f7ca7 100644
--- a/debian/patches/features/all/rt/ide-use-nort-local-irq-variants.patch
+++ b/debian/patches/features/all/rt/ide-use-nort-local-irq-variants.patch
@@ -1,7 +1,7 @@
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 3 Jul 2009 08:30:16 -0500
Subject: ide: Do not disable interrupts for PREEMPT-RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Use the local_irq_*_nort variants.
diff --git a/debian/patches/features/all/rt/idr-use-local-lock-for-protection.patch b/debian/patches/features/all/rt/idr-use-local-lock-for-protection.patch
index b9e134b..4b8e892 100644
--- a/debian/patches/features/all/rt/idr-use-local-lock-for-protection.patch
+++ b/debian/patches/features/all/rt/idr-use-local-lock-for-protection.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 14 Jul 2015 14:26:34 +0200
Subject: idr: Use local lock instead of preempt enable/disable
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
We need to protect the per cpu variable and prevent migration.
diff --git a/debian/patches/features/all/rt/infiniband-mellanox-ib-use-nort-irq.patch b/debian/patches/features/all/rt/infiniband-mellanox-ib-use-nort-irq.patch
index 0c943fb..cd90c64 100644
--- a/debian/patches/features/all/rt/infiniband-mellanox-ib-use-nort-irq.patch
+++ b/debian/patches/features/all/rt/infiniband-mellanox-ib-use-nort-irq.patch
@@ -1,7 +1,7 @@
From: Sven-Thorsten Dietrich <sdietrich at novell.com>
Date: Fri, 3 Jul 2009 08:30:35 -0500
Subject: infiniband: Mellanox IB driver patch use _nort() primitives
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Fixes in_atomic stack-dump, when Mellanox module is loaded into the RT
Kernel.
@@ -21,7 +21,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
-@@ -899,7 +899,7 @@ void ipoib_mcast_restart_task(struct wor
+@@ -902,7 +902,7 @@ void ipoib_mcast_restart_task(struct wor
ipoib_dbg_mcast(priv, "restarting multicast task\n");
@@ -30,7 +30,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
netif_addr_lock(dev);
spin_lock(&priv->lock);
-@@ -981,7 +981,7 @@ void ipoib_mcast_restart_task(struct wor
+@@ -984,7 +984,7 @@ void ipoib_mcast_restart_task(struct wor
spin_unlock(&priv->lock);
netif_addr_unlock(dev);
diff --git a/debian/patches/features/all/rt/inpt-gameport-use-local-irq-nort.patch b/debian/patches/features/all/rt/inpt-gameport-use-local-irq-nort.patch
index 1e1e1af..9f7dec9 100644
--- a/debian/patches/features/all/rt/inpt-gameport-use-local-irq-nort.patch
+++ b/debian/patches/features/all/rt/inpt-gameport-use-local-irq-nort.patch
@@ -1,7 +1,7 @@
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 3 Jul 2009 08:30:16 -0500
Subject: input: gameport: Do not disable interrupts on PREEMPT_RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Use the _nort() primitives.
diff --git a/debian/patches/features/all/rt/introduce_migrate_disable_cpu_light.patch b/debian/patches/features/all/rt/introduce_migrate_disable_cpu_light.patch
index 5778963..e008ac9 100644
--- a/debian/patches/features/all/rt/introduce_migrate_disable_cpu_light.patch
+++ b/debian/patches/features/all/rt/introduce_migrate_disable_cpu_light.patch
@@ -1,7 +1,7 @@
Subject: Intrduce migrate_disable() + cpu_light()
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 17 Jun 2011 15:42:38 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Introduce migrate_disable(). The task can't be pushed to another CPU but can
be preempted.
@@ -42,7 +42,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
-@@ -180,6 +180,9 @@ static inline void cpu_notifier_register
+@@ -173,6 +173,9 @@ static inline void cpu_notifier_register
#endif /* CONFIG_SMP */
extern struct bus_type cpu_subsys;
@@ -90,7 +90,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
int nr_cpus_allowed;
cpumask_t cpus_allowed;
-@@ -1990,14 +1996,6 @@ static inline struct vm_struct *task_sta
+@@ -1991,14 +1997,6 @@ static inline struct vm_struct *task_sta
}
#endif
@@ -105,7 +105,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
#define TNF_MIGRATED 0x01
#define TNF_NO_GROUP 0x02
#define TNF_SHARED 0x04
-@@ -3515,6 +3513,31 @@ static inline void set_task_cpu(struct t
+@@ -3516,6 +3514,31 @@ static inline void set_task_cpu(struct t
#endif /* CONFIG_SMP */
diff --git a/debian/patches/features/all/rt/iommu-amd--Use-WARN_ON_NORT.patch b/debian/patches/features/all/rt/iommu-amd--Use-WARN_ON_NORT.patch
index c2b92f7..1c88b08 100644
--- a/debian/patches/features/all/rt/iommu-amd--Use-WARN_ON_NORT.patch
+++ b/debian/patches/features/all/rt/iommu-amd--Use-WARN_ON_NORT.patch
@@ -1,7 +1,7 @@
Subject: iommu/amd: Use WARN_ON_NORT in __attach_device()
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sat, 27 Feb 2016 10:22:23 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
RT does not disable interrupts here, but the protection is still
correct. Fixup the WARN_ON so it won't yell on RT.
diff --git a/debian/patches/features/all/rt/iommu-iova-don-t-disable-preempt-around-this_cpu_ptr.patch b/debian/patches/features/all/rt/iommu-iova-don-t-disable-preempt-around-this_cpu_ptr.patch
index 266de4f..0596691 100644
--- a/debian/patches/features/all/rt/iommu-iova-don-t-disable-preempt-around-this_cpu_ptr.patch
+++ b/debian/patches/features/all/rt/iommu-iova-don-t-disable-preempt-around-this_cpu_ptr.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 15 Sep 2016 16:58:19 +0200
Subject: [PATCH] iommu/iova: don't disable preempt around this_cpu_ptr()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Commit 583248e6620a ("iommu/iova: Disable preemption around use of
this_cpu_ptr()") disables preemption while accessing a per-CPU variable.
diff --git a/debian/patches/features/all/rt/iommu-vt-d-don-t-disable-preemption-while-accessing-.patch b/debian/patches/features/all/rt/iommu-vt-d-don-t-disable-preemption-while-accessing-.patch
index 35c4086..aa73c0f 100644
--- a/debian/patches/features/all/rt/iommu-vt-d-don-t-disable-preemption-while-accessing-.patch
+++ b/debian/patches/features/all/rt/iommu-vt-d-don-t-disable-preemption-while-accessing-.patch
@@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 15 Sep 2016 17:16:44 +0200
Subject: [PATCH] iommu/vt-d: don't disable preemption while accessing
deferred_flush()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
get_cpu() disables preemption and returns the current CPU number. The
CPU number is later only used once while retrieving the address of the
@@ -36,7 +36,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
/* bitmap for indexing intel_iommus */
static int g_num_of_iommus;
-@@ -3696,10 +3696,8 @@ static void add_unmap(struct dmar_domain
+@@ -3715,10 +3715,8 @@ static void add_unmap(struct dmar_domain
struct intel_iommu *iommu;
struct deferred_flush_entry *entry;
struct deferred_flush_data *flush_data;
@@ -48,7 +48,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
/* Flush all CPUs' entries to avoid deferring too much. If
* this becomes a bottleneck, can just flush us, and rely on
-@@ -3732,8 +3730,6 @@ static void add_unmap(struct dmar_domain
+@@ -3751,8 +3749,6 @@ static void add_unmap(struct dmar_domain
}
flush_data->size++;
spin_unlock_irqrestore(&flush_data->lock, flags);
diff --git a/debian/patches/features/all/rt/ipc-sem-rework-semaphore-wakeups.patch b/debian/patches/features/all/rt/ipc-sem-rework-semaphore-wakeups.patch
index 7da3ae1..cbcf747 100644
--- a/debian/patches/features/all/rt/ipc-sem-rework-semaphore-wakeups.patch
+++ b/debian/patches/features/all/rt/ipc-sem-rework-semaphore-wakeups.patch
@@ -1,7 +1,7 @@
Subject: ipc/sem: Rework semaphore wakeups
From: Peter Zijlstra <peterz at infradead.org>
Date: Wed, 14 Sep 2011 11:57:04 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Current sysv sems have a weird ass wakeup scheme that involves keeping
preemption disabled over a potential O(n^2) loop and busy waiting on
diff --git a/debian/patches/features/all/rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch b/debian/patches/features/all/rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch
index 1b0ce62..d64d7a5 100644
--- a/debian/patches/features/all/rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch
+++ b/debian/patches/features/all/rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch
@@ -1,7 +1,7 @@
Subject: genirq: Allow disabling of softirq processing in irq thread context
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 31 Jan 2012 13:01:27 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The processing of softirqs in irq thread context is a performance gain
for the non-rt workloads of a system, but it's counterproductive for
diff --git a/debian/patches/features/all/rt/irqwork-Move-irq-safe-work-to-irq-context.patch b/debian/patches/features/all/rt/irqwork-Move-irq-safe-work-to-irq-context.patch
index f07952e..29880f7 100644
--- a/debian/patches/features/all/rt/irqwork-Move-irq-safe-work-to-irq-context.patch
+++ b/debian/patches/features/all/rt/irqwork-Move-irq-safe-work-to-irq-context.patch
@@ -1,7 +1,7 @@
Subject: irqwork: Move irq safe work to irq context
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 15 Nov 2015 18:40:17 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
On architectures where arch_irq_work_has_interrupt() returns false, we
end up running the irq safe work from the softirq context. That
diff --git a/debian/patches/features/all/rt/irqwork-push_most_work_into_softirq_context.patch b/debian/patches/features/all/rt/irqwork-push_most_work_into_softirq_context.patch
index 731687f..29ae64d 100644
--- a/debian/patches/features/all/rt/irqwork-push_most_work_into_softirq_context.patch
+++ b/debian/patches/features/all/rt/irqwork-push_most_work_into_softirq_context.patch
@@ -1,7 +1,7 @@
Subject: irqwork: push most work into softirq context
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Tue, 23 Jun 2015 15:32:51 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Initially we defered all irqwork into softirq because we didn't want the
latency spikes if perf or another user was busy and delayed the RT task.
diff --git a/debian/patches/features/all/rt/jump-label-rt.patch b/debian/patches/features/all/rt/jump-label-rt.patch
index 8448f62..c29475c 100644
--- a/debian/patches/features/all/rt/jump-label-rt.patch
+++ b/debian/patches/features/all/rt/jump-label-rt.patch
@@ -1,7 +1,7 @@
Subject: jump-label: disable if stop_machine() is used
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 08 Jul 2015 17:14:48 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Some architectures are using stop_machine() while switching the opcode which
leads to latency spikes.
diff --git a/debian/patches/features/all/rt/kconfig-disable-a-few-options-rt.patch b/debian/patches/features/all/rt/kconfig-disable-a-few-options-rt.patch
index 956fef4..4fd0887 100644
--- a/debian/patches/features/all/rt/kconfig-disable-a-few-options-rt.patch
+++ b/debian/patches/features/all/rt/kconfig-disable-a-few-options-rt.patch
@@ -1,7 +1,7 @@
Subject: kconfig: Disable config options which are not RT compatible
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 24 Jul 2011 12:11:43 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Disable stuff which is known to have issues on RT
diff --git a/debian/patches/features/all/rt/kconfig-preempt-rt-full.patch b/debian/patches/features/all/rt/kconfig-preempt-rt-full.patch
index bcfa2b3..39de5de 100644
--- a/debian/patches/features/all/rt/kconfig-preempt-rt-full.patch
+++ b/debian/patches/features/all/rt/kconfig-preempt-rt-full.patch
@@ -1,7 +1,7 @@
Subject: kconfig: Add PREEMPT_RT_FULL
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 29 Jun 2011 14:58:57 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Introduce the final symbol for PREEMPT_RT_FULL.
diff --git a/debian/patches/features/all/rt/kernel-SRCU-provide-a-static-initializer.patch b/debian/patches/features/all/rt/kernel-SRCU-provide-a-static-initializer.patch
index dd345a8..5bbc990 100644
--- a/debian/patches/features/all/rt/kernel-SRCU-provide-a-static-initializer.patch
+++ b/debian/patches/features/all/rt/kernel-SRCU-provide-a-static-initializer.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Tue, 19 Mar 2013 14:44:30 +0100
Subject: kernel/SRCU: provide a static initializer
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
There are macros for static initializer for the three out of four
possible notifier types, that are:
diff --git a/debian/patches/features/all/rt/kernel-cpu-fix-cpu-down-problem-if-kthread-s-cpu-is-.patch b/debian/patches/features/all/rt/kernel-cpu-fix-cpu-down-problem-if-kthread-s-cpu-is-.patch
index 52b91d7..341d8c5 100644
--- a/debian/patches/features/all/rt/kernel-cpu-fix-cpu-down-problem-if-kthread-s-cpu-is-.patch
+++ b/debian/patches/features/all/rt/kernel-cpu-fix-cpu-down-problem-if-kthread-s-cpu-is-.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 7 Jun 2013 22:37:06 +0200
Subject: kernel/cpu: fix cpu down problem if kthread's cpu is going down
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
If kthread is pinned to CPUx and CPUx is going down then we get into
trouble:
diff --git a/debian/patches/features/all/rt/kernel-futex-don-t-deboost-too-early.patch b/debian/patches/features/all/rt/kernel-futex-don-t-deboost-too-early.patch
index 0065aaa..d940b28 100644
--- a/debian/patches/features/all/rt/kernel-futex-don-t-deboost-too-early.patch
+++ b/debian/patches/features/all/rt/kernel-futex-don-t-deboost-too-early.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 29 Sep 2016 18:49:22 +0200
Subject: [PATCH] kernel/futex: don't deboost too early
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The sequence:
T1 holds futex
diff --git a/debian/patches/features/all/rt/kernel-hotplug-restore-original-cpu-mask-oncpu-down.patch b/debian/patches/features/all/rt/kernel-hotplug-restore-original-cpu-mask-oncpu-down.patch
index a0642f9..8d7d49d 100644
--- a/debian/patches/features/all/rt/kernel-hotplug-restore-original-cpu-mask-oncpu-down.patch
+++ b/debian/patches/features/all/rt/kernel-hotplug-restore-original-cpu-mask-oncpu-down.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 14 Jun 2013 17:16:35 +0200
Subject: kernel/hotplug: restore original cpu mask oncpu/down
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
If a task which is allowed to run only on CPU X puts CPU Y down then it
will be allowed on all CPUs but the on CPU Y after it comes back from
diff --git a/debian/patches/features/all/rt/kernel-migrate_disable-do-fastpath-in-atomic-irqs-of.patch b/debian/patches/features/all/rt/kernel-migrate_disable-do-fastpath-in-atomic-irqs-of.patch
index f121e5d..c5ac404 100644
--- a/debian/patches/features/all/rt/kernel-migrate_disable-do-fastpath-in-atomic-irqs-of.patch
+++ b/debian/patches/features/all/rt/kernel-migrate_disable-do-fastpath-in-atomic-irqs-of.patch
@@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Tue, 9 Feb 2016 18:18:01 +0100
Subject: kernel: migrate_disable() do fastpath in atomic &
irqs-off
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
With interrupts off it makes no sense to do the long path since we can't
leave the CPU anyway. Also we might end up in a recursion with lockdep.
diff --git a/debian/patches/features/all/rt/kernel-perf-mark-perf_cpu_context-s-timer-as-irqsafe.patch b/debian/patches/features/all/rt/kernel-perf-mark-perf_cpu_context-s-timer-as-irqsafe.patch
index e426d1a..bfc470a 100644
--- a/debian/patches/features/all/rt/kernel-perf-mark-perf_cpu_context-s-timer-as-irqsafe.patch
+++ b/debian/patches/features/all/rt/kernel-perf-mark-perf_cpu_context-s-timer-as-irqsafe.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 4 Feb 2016 16:38:10 +0100
Subject: [PATCH] kernel/perf: mark perf_cpu_context's timer as irqsafe
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Otherwise we get a WARN_ON() backtrace and some events are reported as
"not counted".
diff --git a/debian/patches/features/all/rt/kernel-printk-Don-t-try-to-print-from-IRQ-NMI-region.patch b/debian/patches/features/all/rt/kernel-printk-Don-t-try-to-print-from-IRQ-NMI-region.patch
index 7ece56e..e9d17a8 100644
--- a/debian/patches/features/all/rt/kernel-printk-Don-t-try-to-print-from-IRQ-NMI-region.patch
+++ b/debian/patches/features/all/rt/kernel-printk-Don-t-try-to-print-from-IRQ-NMI-region.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 19 May 2016 17:45:27 +0200
Subject: [PATCH] kernel/printk: Don't try to print from IRQ/NMI region
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
On -RT we try to acquire sleeping locks which might lead to warnings
from lockdep or a warn_on() from spin_try_lock() (which is a rtmutex on
diff --git a/debian/patches/features/all/rt/kernel-sched-move-stack-kprobe-clean-up-to-__put_tas.patch b/debian/patches/features/all/rt/kernel-sched-move-stack-kprobe-clean-up-to-__put_tas.patch
index e6476b2..399eadf 100644
--- a/debian/patches/features/all/rt/kernel-sched-move-stack-kprobe-clean-up-to-__put_tas.patch
+++ b/debian/patches/features/all/rt/kernel-sched-move-stack-kprobe-clean-up-to-__put_tas.patch
@@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Mon, 21 Nov 2016 19:31:08 +0100
Subject: [PATCH] kernel/sched: move stack + kprobe clean up to
__put_task_struct()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
There is no need to free the stack before the task struct. This also
comes handy on -RT because we can't free memory in preempt disabled
diff --git a/debian/patches/features/all/rt/kernel-softirq-unlock-with-irqs-on.patch b/debian/patches/features/all/rt/kernel-softirq-unlock-with-irqs-on.patch
index 20ae1f3..985cdd9 100644
--- a/debian/patches/features/all/rt/kernel-softirq-unlock-with-irqs-on.patch
+++ b/debian/patches/features/all/rt/kernel-softirq-unlock-with-irqs-on.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Tue, 9 Feb 2016 18:17:18 +0100
Subject: kernel: softirq: unlock with irqs on
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
We unlock the lock while the interrupts are off. This isn't a problem
now but will get because the migrate_disable() + enable are not
diff --git a/debian/patches/features/all/rt/kgb-serial-hackaround.patch b/debian/patches/features/all/rt/kgb-serial-hackaround.patch
index 8f9d76d..9ff49fa 100644
--- a/debian/patches/features/all/rt/kgb-serial-hackaround.patch
+++ b/debian/patches/features/all/rt/kgb-serial-hackaround.patch
@@ -1,7 +1,7 @@
From: Jason Wessel <jason.wessel at windriver.com>
Date: Thu, 28 Jul 2011 12:42:23 -0500
Subject: kgdb/serial: Short term workaround
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
On 07/27/2011 04:37 PM, Thomas Gleixner wrote:
> - KGDB (not yet disabled) is reportedly unusable on -rt right now due
diff --git a/debian/patches/features/all/rt/latency-hist.patch b/debian/patches/features/all/rt/latency-hist.patch
index 07e0303..debbd46 100644
--- a/debian/patches/features/all/rt/latency-hist.patch
+++ b/debian/patches/features/all/rt/latency-hist.patch
@@ -1,7 +1,7 @@
Subject: tracing: Add latency histograms
From: Carsten Emde <C.Emde at osadl.org>
Date: Tue, 19 Jul 2011 14:03:41 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
This patch provides a recording mechanism to store data of potential
sources of system latencies. The recordings separately determine the
@@ -237,7 +237,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
int start_pid;
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
-@@ -1917,6 +1917,12 @@ struct task_struct {
+@@ -1918,6 +1918,12 @@ struct task_struct {
/* bitmask and counter of trace recursion */
unsigned long trace_recursion;
#endif /* CONFIG_TRACING */
diff --git a/debian/patches/features/all/rt/latency_hist-update-sched_wakeup-probe.patch b/debian/patches/features/all/rt/latency_hist-update-sched_wakeup-probe.patch
index fd77f0f..6f893cc 100644
--- a/debian/patches/features/all/rt/latency_hist-update-sched_wakeup-probe.patch
+++ b/debian/patches/features/all/rt/latency_hist-update-sched_wakeup-probe.patch
@@ -1,7 +1,7 @@
Subject: latency_hist: Update sched_wakeup probe
From: Mathieu Desnoyers <mathieu.desnoyers at efficios.com>
Date: Sun, 25 Oct 2015 18:06:05 -0400
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
"sched: Introduce the 'trace_sched_waking' tracepoint" introduces a
prototype change for the sched_wakeup probe: the "success" argument is
diff --git a/debian/patches/features/all/rt/latencyhist-disable-jump-labels.patch b/debian/patches/features/all/rt/latencyhist-disable-jump-labels.patch
index 798aa4c..31efeeb 100644
--- a/debian/patches/features/all/rt/latencyhist-disable-jump-labels.patch
+++ b/debian/patches/features/all/rt/latencyhist-disable-jump-labels.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 4 Feb 2016 14:08:06 +0100
Subject: latencyhist: disable jump-labels
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Atleast on X86 we die a recursive death
diff --git a/debian/patches/features/all/rt/leds-trigger-disable-CPU-trigger-on-RT.patch b/debian/patches/features/all/rt/leds-trigger-disable-CPU-trigger-on-RT.patch
index 1c26ec0..f74ea08 100644
--- a/debian/patches/features/all/rt/leds-trigger-disable-CPU-trigger-on-RT.patch
+++ b/debian/patches/features/all/rt/leds-trigger-disable-CPU-trigger-on-RT.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 23 Jan 2014 14:45:59 +0100
Subject: leds: trigger: disable CPU trigger on -RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
as it triggers:
|CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.8-rt10 #141
diff --git a/debian/patches/features/all/rt/list_bl-fixup-bogus-lockdep-warning.patch b/debian/patches/features/all/rt/list_bl-fixup-bogus-lockdep-warning.patch
index f47e7b4..974eee6 100644
--- a/debian/patches/features/all/rt/list_bl-fixup-bogus-lockdep-warning.patch
+++ b/debian/patches/features/all/rt/list_bl-fixup-bogus-lockdep-warning.patch
@@ -1,7 +1,7 @@
From: Josh Cartwright <joshc at ni.com>
Date: Thu, 31 Mar 2016 00:04:25 -0500
Subject: [PATCH] list_bl: fixup bogus lockdep warning
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
At first glance, the use of 'static inline' seems appropriate for
INIT_HLIST_BL_HEAD().
diff --git a/debian/patches/features/all/rt/list_bl.h-make-list-head-locking-RT-safe.patch b/debian/patches/features/all/rt/list_bl.h-make-list-head-locking-RT-safe.patch
index 4b95ddd..4b98299 100644
--- a/debian/patches/features/all/rt/list_bl.h-make-list-head-locking-RT-safe.patch
+++ b/debian/patches/features/all/rt/list_bl.h-make-list-head-locking-RT-safe.patch
@@ -1,7 +1,7 @@
From: Paul Gortmaker <paul.gortmaker at windriver.com>
Date: Fri, 21 Jun 2013 15:07:25 -0400
Subject: list_bl: Make list head locking RT safe
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
As per changes in include/linux/jbd_common.h for avoiding the
bit_spin_locks on RT ("fs: jbd/jbd2: Make state lock and journal
diff --git a/debian/patches/features/all/rt/local-irq-rt-depending-variants.patch b/debian/patches/features/all/rt/local-irq-rt-depending-variants.patch
index d58b4e0..69fa8cf 100644
--- a/debian/patches/features/all/rt/local-irq-rt-depending-variants.patch
+++ b/debian/patches/features/all/rt/local-irq-rt-depending-variants.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 21 Jul 2009 22:34:14 +0200
Subject: rt: local_irq_* variants depending on RT/!RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Add local_irq_*_(no)rt variant which are mainly used to break
interrupt disabled sections on PREEMPT_RT or to explicitely disable
diff --git a/debian/patches/features/all/rt/locallock-add-local_lock_on.patch b/debian/patches/features/all/rt/locallock-add-local_lock_on.patch
index 4ada352..5cc1a41 100644
--- a/debian/patches/features/all/rt/locallock-add-local_lock_on.patch
+++ b/debian/patches/features/all/rt/locallock-add-local_lock_on.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 27 May 2016 15:11:51 +0200
Subject: [PATCH] locallock: add local_lock_on()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
---
diff --git a/debian/patches/features/all/rt/localversion.patch b/debian/patches/features/all/rt/localversion.patch
index a1044be..b9a3f5d 100644
--- a/debian/patches/features/all/rt/localversion.patch
+++ b/debian/patches/features/all/rt/localversion.patch
@@ -1,7 +1,7 @@
Subject: Add localversion for -RT release
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 08 Jul 2011 20:25:16 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
---
@@ -11,4 +11,4 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- /dev/null
+++ b/localversion-rt
@@ -0,0 +1 @@
-+-rt1
++-rt4
diff --git a/debian/patches/features/all/rt/lockdep-no-softirq-accounting-on-rt.patch b/debian/patches/features/all/rt/lockdep-no-softirq-accounting-on-rt.patch
index 742dbe5..6b48ffb 100644
--- a/debian/patches/features/all/rt/lockdep-no-softirq-accounting-on-rt.patch
+++ b/debian/patches/features/all/rt/lockdep-no-softirq-accounting-on-rt.patch
@@ -1,7 +1,7 @@
Subject: lockdep: Make it RT aware
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 17 Jul 2011 18:51:23 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
teach lockdep that we don't really do softirqs on -RT.
diff --git a/debian/patches/features/all/rt/lockdep-selftest-fix-warnings-due-to-missing-PREEMPT.patch b/debian/patches/features/all/rt/lockdep-selftest-fix-warnings-due-to-missing-PREEMPT.patch
index 5a43e05..c61186e 100644
--- a/debian/patches/features/all/rt/lockdep-selftest-fix-warnings-due-to-missing-PREEMPT.patch
+++ b/debian/patches/features/all/rt/lockdep-selftest-fix-warnings-due-to-missing-PREEMPT.patch
@@ -1,7 +1,7 @@
From: Josh Cartwright <josh.cartwright at ni.com>
Date: Wed, 28 Jan 2015 13:08:45 -0600
Subject: lockdep: selftest: fix warnings due to missing PREEMPT_RT conditionals
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
"lockdep: Selftest: Only do hardirq context test for raw spinlock"
disabled the execution of certain tests with PREEMPT_RT_FULL, but did
diff --git a/debian/patches/features/all/rt/lockdep-selftest-only-do-hardirq-context-test-for-raw-spinlock.patch b/debian/patches/features/all/rt/lockdep-selftest-only-do-hardirq-context-test-for-raw-spinlock.patch
index 3934a75..e514b1b 100644
--- a/debian/patches/features/all/rt/lockdep-selftest-only-do-hardirq-context-test-for-raw-spinlock.patch
+++ b/debian/patches/features/all/rt/lockdep-selftest-only-do-hardirq-context-test-for-raw-spinlock.patch
@@ -1,7 +1,7 @@
Subject: lockdep: selftest: Only do hardirq context test for raw spinlock
From: Yong Zhang <yong.zhang0 at gmail.com>
Date: Mon, 16 Apr 2012 15:01:56 +0800
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
From: Yong Zhang <yong.zhang at windriver.com>
diff --git a/debian/patches/features/all/rt/locking-locktorture-Do-NOT-include-rwlock.h-directly.patch b/debian/patches/features/all/rt/locking-locktorture-Do-NOT-include-rwlock.h-directly.patch
index 944948d..ebe17f8 100644
--- a/debian/patches/features/all/rt/locking-locktorture-Do-NOT-include-rwlock.h-directly.patch
+++ b/debian/patches/features/all/rt/locking-locktorture-Do-NOT-include-rwlock.h-directly.patch
@@ -1,7 +1,7 @@
From: "Wolfgang M. Reimer" <linuxball at gmail.com>
Date: Tue, 21 Jul 2015 16:20:07 +0200
Subject: locking: locktorture: Do NOT include rwlock.h directly
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Including rwlock.h directly will cause kernel builds to fail
if CONFIG_PREEMPT_RT_FULL is defined. The correct header file
diff --git a/debian/patches/features/all/rt/locking-percpu-rwsem-use-swait-for-the-wating-writer.patch b/debian/patches/features/all/rt/locking-percpu-rwsem-use-swait-for-the-wating-writer.patch
index b5d5a34..9b2857d 100644
--- a/debian/patches/features/all/rt/locking-percpu-rwsem-use-swait-for-the-wating-writer.patch
+++ b/debian/patches/features/all/rt/locking-percpu-rwsem-use-swait-for-the-wating-writer.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Mon, 21 Nov 2016 19:26:15 +0100
Subject: [PATCH] locking/percpu-rwsem: use swait for the wating writer
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Use struct swait_queue_head instead of wait_queue_head_t for the waiting
writer. The swait implementation is smaller and lightweight compared to
diff --git a/debian/patches/features/all/rt/md-disable-bcache.patch b/debian/patches/features/all/rt/md-disable-bcache.patch
index dc5a173..71ae9ed 100644
--- a/debian/patches/features/all/rt/md-disable-bcache.patch
+++ b/debian/patches/features/all/rt/md-disable-bcache.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 29 Aug 2013 11:48:57 +0200
Subject: md: disable bcache
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
It uses anon semaphores
|drivers/md/bcache/request.c: In function ‘cached_dev_write_complete’:
diff --git a/debian/patches/features/all/rt/md-raid5-percpu-handling-rt-aware.patch b/debian/patches/features/all/rt/md-raid5-percpu-handling-rt-aware.patch
index 3e0d91f..93b79b7 100644
--- a/debian/patches/features/all/rt/md-raid5-percpu-handling-rt-aware.patch
+++ b/debian/patches/features/all/rt/md-raid5-percpu-handling-rt-aware.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 6 Apr 2010 16:51:31 +0200
Subject: md: raid5: Make raid5_percpu handling RT aware
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
__raid_run_ops() disables preemption with get_cpu() around the access
to the raid5_percpu variables. That causes scheduling while atomic
diff --git a/debian/patches/features/all/rt/mips-disable-highmem-on-rt.patch b/debian/patches/features/all/rt/mips-disable-highmem-on-rt.patch
index 22bb9c7..0918e9f 100644
--- a/debian/patches/features/all/rt/mips-disable-highmem-on-rt.patch
+++ b/debian/patches/features/all/rt/mips-disable-highmem-on-rt.patch
@@ -1,7 +1,7 @@
Subject: mips: Disable highmem on RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Mon, 18 Jul 2011 17:10:12 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The current highmem handling on -RT is not compatible and needs fixups.
diff --git a/debian/patches/features/all/rt/mm--rt--Fix-generic-kmap_atomic-for-RT.patch b/debian/patches/features/all/rt/mm--rt--Fix-generic-kmap_atomic-for-RT.patch
index 66494e9..3b4f6a0 100644
--- a/debian/patches/features/all/rt/mm--rt--Fix-generic-kmap_atomic-for-RT.patch
+++ b/debian/patches/features/all/rt/mm--rt--Fix-generic-kmap_atomic-for-RT.patch
@@ -1,7 +1,7 @@
Subject: mm: rt: Fix generic kmap_atomic for RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sat, 19 Sep 2015 10:15:00 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The update to 4.1 brought in the mainline variant of the pagefault
disable distangling from preempt count. That introduced a
diff --git a/debian/patches/features/all/rt/mm-backing-dev-don-t-disable-IRQs-in-wb_congested_pu.patch b/debian/patches/features/all/rt/mm-backing-dev-don-t-disable-IRQs-in-wb_congested_pu.patch
index 83a68a8..d464a5c 100644
--- a/debian/patches/features/all/rt/mm-backing-dev-don-t-disable-IRQs-in-wb_congested_pu.patch
+++ b/debian/patches/features/all/rt/mm-backing-dev-don-t-disable-IRQs-in-wb_congested_pu.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 5 Feb 2016 12:17:14 +0100
Subject: mm: backing-dev: don't disable IRQs in wb_congested_put()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
it triggers:
|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:930
diff --git a/debian/patches/features/all/rt/mm-bounce-local-irq-save-nort.patch b/debian/patches/features/all/rt/mm-bounce-local-irq-save-nort.patch
index 690ed91..c4b1fec 100644
--- a/debian/patches/features/all/rt/mm-bounce-local-irq-save-nort.patch
+++ b/debian/patches/features/all/rt/mm-bounce-local-irq-save-nort.patch
@@ -1,7 +1,7 @@
Subject: mm: bounce: Use local_irq_save_nort
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 09 Jan 2013 10:33:09 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
kmap_atomic() is preemptible on RT.
diff --git a/debian/patches/features/all/rt/mm-convert-swap-to-percpu-locked.patch b/debian/patches/features/all/rt/mm-convert-swap-to-percpu-locked.patch
index fbd409e..1c485c0 100644
--- a/debian/patches/features/all/rt/mm-convert-swap-to-percpu-locked.patch
+++ b/debian/patches/features/all/rt/mm-convert-swap-to-percpu-locked.patch
@@ -1,7 +1,7 @@
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 3 Jul 2009 08:29:51 -0500
Subject: mm/swap: Convert to percpu locked
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Replace global locks (get_cpu + local_irq_save) with "local_locks()".
Currently there is one of for "rotate" and one for "swap".
@@ -18,7 +18,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
-@@ -293,6 +293,7 @@ extern unsigned long nr_free_pagecache_p
+@@ -294,6 +294,7 @@ extern unsigned long nr_free_pagecache_p
/* linux/mm/swap.c */
@@ -28,7 +28,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
extern void lru_cache_add_file(struct page *page);
--- a/mm/compaction.c
+++ b/mm/compaction.c
-@@ -1612,10 +1612,12 @@ static enum compact_result compact_zone(
+@@ -1593,10 +1593,12 @@ static enum compact_result compact_zone(
block_start_pfn(cc->migrate_pfn, cc->order);
if (cc->last_migrated_pfn < current_block_start) {
@@ -45,7 +45,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
-@@ -6559,7 +6559,9 @@ static int page_alloc_cpu_notify(struct
+@@ -6567,7 +6567,9 @@ static int page_alloc_cpu_notify(struct
int cpu = (unsigned long)hcpu;
if (action == CPU_DEAD || action == CPU_DEAD_FROZEN) {
diff --git a/debian/patches/features/all/rt/mm-disable-sloub-rt.patch b/debian/patches/features/all/rt/mm-disable-sloub-rt.patch
index 2ff11c1..258863c 100644
--- a/debian/patches/features/all/rt/mm-disable-sloub-rt.patch
+++ b/debian/patches/features/all/rt/mm-disable-sloub-rt.patch
@@ -1,7 +1,7 @@
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 3 Jul 2009 08:44:03 -0500
Subject: mm: Allow only slub on RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Disable SLAB and SLOB on -RT. Only SLUB is adopted to -RT needs.
diff --git a/debian/patches/features/all/rt/mm-enable-slub.patch b/debian/patches/features/all/rt/mm-enable-slub.patch
index 1711fbb..df91dce 100644
--- a/debian/patches/features/all/rt/mm-enable-slub.patch
+++ b/debian/patches/features/all/rt/mm-enable-slub.patch
@@ -1,7 +1,7 @@
Subject: mm: Enable SLUB for RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Thu, 25 Oct 2012 10:32:35 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Make SLUB RT aware by converting locks to raw and using free lists to
move the freeing out of the lock held region.
diff --git a/debian/patches/features/all/rt/mm-make-vmstat-rt-aware.patch b/debian/patches/features/all/rt/mm-make-vmstat-rt-aware.patch
index 39bcf87..6e00490 100644
--- a/debian/patches/features/all/rt/mm-make-vmstat-rt-aware.patch
+++ b/debian/patches/features/all/rt/mm-make-vmstat-rt-aware.patch
@@ -1,7 +1,7 @@
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 3 Jul 2009 08:30:13 -0500
Subject: mm/vmstat: Protect per cpu variables with preempt disable on RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Disable preemption on -RT for the vmstat code. On vanila the code runs in
IRQ-off regions while on -RT it is not. "preempt_disable" ensures that the
diff --git a/debian/patches/features/all/rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch b/debian/patches/features/all/rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch
index ea8516c..a504de8 100644
--- a/debian/patches/features/all/rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch
+++ b/debian/patches/features/all/rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch
@@ -1,7 +1,7 @@
From: Yang Shi <yang.shi at windriver.com>
Subject: mm/memcontrol: Don't call schedule_work_on in preemption disabled context
Date: Wed, 30 Oct 2013 11:48:33 -0700
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The following trace is triggered when running ltp oom test cases:
@@ -49,7 +49,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
-@@ -1794,7 +1794,7 @@ static void drain_all_stock(struct mem_c
+@@ -1792,7 +1792,7 @@ static void drain_all_stock(struct mem_c
return;
/* Notify other cpus that system-wide "drain" is running */
get_online_cpus();
@@ -58,7 +58,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
for_each_online_cpu(cpu) {
struct memcg_stock_pcp *stock = &per_cpu(memcg_stock, cpu);
struct mem_cgroup *memcg;
-@@ -1811,7 +1811,7 @@ static void drain_all_stock(struct mem_c
+@@ -1809,7 +1809,7 @@ static void drain_all_stock(struct mem_c
schedule_work_on(cpu, &stock->work);
}
}
diff --git a/debian/patches/features/all/rt/mm-memcontrol-do_not_disable_irq.patch b/debian/patches/features/all/rt/mm-memcontrol-do_not_disable_irq.patch
index 3e69703..66411c7 100644
--- a/debian/patches/features/all/rt/mm-memcontrol-do_not_disable_irq.patch
+++ b/debian/patches/features/all/rt/mm-memcontrol-do_not_disable_irq.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Subject: mm/memcontrol: Replace local_irq_disable with local locks
Date: Wed, 28 Jan 2015 17:14:16 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
There are a few local_irq_disable() which then take sleeping locks. This
patch converts them local locks.
@@ -30,7 +30,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
/* Whether legacy memory+swap accounting is active */
static bool do_memsw_account(void)
{
-@@ -4550,12 +4553,12 @@ static int mem_cgroup_move_account(struc
+@@ -4548,12 +4551,12 @@ static int mem_cgroup_move_account(struc
ret = 0;
@@ -45,7 +45,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
out_unlock:
unlock_page(page);
out:
-@@ -5430,10 +5433,10 @@ void mem_cgroup_commit_charge(struct pag
+@@ -5428,10 +5431,10 @@ void mem_cgroup_commit_charge(struct pag
commit_charge(page, memcg, lrucare);
@@ -58,7 +58,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
if (do_memsw_account() && PageSwapCache(page)) {
swp_entry_t entry = { .val = page_private(page) };
-@@ -5489,14 +5492,14 @@ static void uncharge_batch(struct mem_cg
+@@ -5487,14 +5490,14 @@ static void uncharge_batch(struct mem_cg
memcg_oom_recover(memcg);
}
@@ -75,7 +75,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
if (!mem_cgroup_is_root(memcg))
css_put_many(&memcg->css, nr_pages);
-@@ -5834,6 +5837,7 @@ void mem_cgroup_swapout(struct page *pag
+@@ -5832,6 +5835,7 @@ void mem_cgroup_swapout(struct page *pag
{
struct mem_cgroup *memcg, *swap_memcg;
unsigned short oldid;
@@ -83,7 +83,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
VM_BUG_ON_PAGE(PageLRU(page), page);
VM_BUG_ON_PAGE(page_count(page), page);
-@@ -5874,12 +5878,16 @@ void mem_cgroup_swapout(struct page *pag
+@@ -5872,12 +5876,16 @@ void mem_cgroup_swapout(struct page *pag
* important here to have the interrupts disabled because it is the
* only synchronisation we have for udpating the per-CPU variables.
*/
diff --git a/debian/patches/features/all/rt/mm-memcontrol-mem_cgroup_migrate-replace-another-loc.patch b/debian/patches/features/all/rt/mm-memcontrol-mem_cgroup_migrate-replace-another-loc.patch
index 2ada34c..4fd79ea 100644
--- a/debian/patches/features/all/rt/mm-memcontrol-mem_cgroup_migrate-replace-another-loc.patch
+++ b/debian/patches/features/all/rt/mm-memcontrol-mem_cgroup_migrate-replace-another-loc.patch
@@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti at gmail.com>
Date: Sun, 5 Jun 2016 08:11:13 +0200
Subject: [PATCH] mm/memcontrol: mem_cgroup_migrate() - replace another
local_irq_disable() w. local_lock_irq()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
v4.6 grew a local_irq_disable() in mm/memcontrol.c::mem_cgroup_migrate().
Convert it to use the existing local lock (event_lock) like the others.
@@ -15,7 +15,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
-@@ -5654,10 +5654,10 @@ void mem_cgroup_migrate(struct page *old
+@@ -5652,10 +5652,10 @@ void mem_cgroup_migrate(struct page *old
commit_charge(newpage, memcg, false);
diff --git a/debian/patches/features/all/rt/mm-page-alloc-use-local-lock-on-target-cpu.patch b/debian/patches/features/all/rt/mm-page-alloc-use-local-lock-on-target-cpu.patch
index 2a48235..0047659 100644
--- a/debian/patches/features/all/rt/mm-page-alloc-use-local-lock-on-target-cpu.patch
+++ b/debian/patches/features/all/rt/mm-page-alloc-use-local-lock-on-target-cpu.patch
@@ -1,7 +1,7 @@
Subject: mm: page_alloc: Use local_lock_on() instead of plain spinlock
From: Thomas Gleixner <tglx at linutronix.de>
Date: Thu, 27 Sep 2012 11:11:46 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The plain spinlock while sufficient does not update the local_lock
internals. Use a proper local_lock function instead to ease debugging.
diff --git a/debian/patches/features/all/rt/mm-page_alloc-reduce-lock-sections-further.patch b/debian/patches/features/all/rt/mm-page_alloc-reduce-lock-sections-further.patch
index 9d9e6ba..afb54ed 100644
--- a/debian/patches/features/all/rt/mm-page_alloc-reduce-lock-sections-further.patch
+++ b/debian/patches/features/all/rt/mm-page_alloc-reduce-lock-sections-further.patch
@@ -1,7 +1,7 @@
From: Peter Zijlstra <peterz at infradead.org>
Date: Fri Jul 3 08:44:37 2009 -0500
Subject: mm: page_alloc: Reduce lock sections further
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Split out the pages which are to be freed into a separate list and
call free_pages_bulk() outside of the percpu page allocator locks.
@@ -144,7 +144,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
static void __meminit __init_single_page(struct page *page, unsigned long pfn,
-@@ -2251,16 +2277,18 @@ static int rmqueue_bulk(struct zone *zon
+@@ -2259,16 +2285,18 @@ static int rmqueue_bulk(struct zone *zon
void drain_zone_pages(struct zone *zone, struct per_cpu_pages *pcp)
{
unsigned long flags;
@@ -164,7 +164,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
#endif
-@@ -2276,16 +2304,21 @@ static void drain_pages_zone(unsigned in
+@@ -2284,16 +2312,21 @@ static void drain_pages_zone(unsigned in
unsigned long flags;
struct per_cpu_pageset *pset;
struct per_cpu_pages *pcp;
@@ -188,7 +188,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
/*
-@@ -2467,8 +2500,13 @@ void free_hot_cold_page(struct page *pag
+@@ -2475,8 +2508,13 @@ void free_hot_cold_page(struct page *pag
pcp->count++;
if (pcp->count >= pcp->high) {
unsigned long batch = READ_ONCE(pcp->batch);
diff --git a/debian/patches/features/all/rt/mm-page_alloc-rt-friendly-per-cpu-pages.patch b/debian/patches/features/all/rt/mm-page_alloc-rt-friendly-per-cpu-pages.patch
index 34ae6fb..7772c6e 100644
--- a/debian/patches/features/all/rt/mm-page_alloc-rt-friendly-per-cpu-pages.patch
+++ b/debian/patches/features/all/rt/mm-page_alloc-rt-friendly-per-cpu-pages.patch
@@ -1,7 +1,7 @@
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 3 Jul 2009 08:29:37 -0500
Subject: mm: page_alloc: rt-friendly per-cpu pages
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
rt-friendly per-cpu pages: convert the irqs-off per-cpu locking
method into a preemptible, explicit-per-cpu-locks method.
@@ -58,7 +58,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
static void __init __free_pages_boot_core(struct page *page, unsigned int order)
-@@ -2240,14 +2253,14 @@ void drain_zone_pages(struct zone *zone,
+@@ -2248,14 +2261,14 @@ void drain_zone_pages(struct zone *zone,
unsigned long flags;
int to_drain, batch;
@@ -75,7 +75,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
#endif
-@@ -2264,7 +2277,7 @@ static void drain_pages_zone(unsigned in
+@@ -2272,7 +2285,7 @@ static void drain_pages_zone(unsigned in
struct per_cpu_pageset *pset;
struct per_cpu_pages *pcp;
@@ -84,7 +84,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
pset = per_cpu_ptr(zone->pageset, cpu);
pcp = &pset->pcp;
-@@ -2272,7 +2285,7 @@ static void drain_pages_zone(unsigned in
+@@ -2280,7 +2293,7 @@ static void drain_pages_zone(unsigned in
free_pcppages_bulk(zone, pcp->count, pcp);
pcp->count = 0;
}
@@ -93,7 +93,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
/*
-@@ -2358,8 +2371,17 @@ void drain_all_pages(struct zone *zone)
+@@ -2366,8 +2379,17 @@ void drain_all_pages(struct zone *zone)
else
cpumask_clear_cpu(cpu, &cpus_with_pcps);
}
@@ -111,7 +111,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
#ifdef CONFIG_HIBERNATION
-@@ -2419,7 +2441,7 @@ void free_hot_cold_page(struct page *pag
+@@ -2427,7 +2449,7 @@ void free_hot_cold_page(struct page *pag
migratetype = get_pfnblock_migratetype(page, pfn);
set_pcppage_migratetype(page, migratetype);
@@ -120,7 +120,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
__count_vm_event(PGFREE);
/*
-@@ -2450,7 +2472,7 @@ void free_hot_cold_page(struct page *pag
+@@ -2458,7 +2480,7 @@ void free_hot_cold_page(struct page *pag
}
out:
@@ -129,7 +129,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
/*
-@@ -2592,7 +2614,7 @@ struct page *buffered_rmqueue(struct zon
+@@ -2600,7 +2622,7 @@ struct page *buffered_rmqueue(struct zon
struct per_cpu_pages *pcp;
struct list_head *list;
@@ -138,7 +138,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
do {
pcp = &this_cpu_ptr(zone->pageset)->pcp;
list = &pcp->lists[migratetype];
-@@ -2619,7 +2641,7 @@ struct page *buffered_rmqueue(struct zon
+@@ -2627,7 +2649,7 @@ struct page *buffered_rmqueue(struct zon
* allocate greater than order-1 page units with __GFP_NOFAIL.
*/
WARN_ON_ONCE((gfp_flags & __GFP_NOFAIL) && (order > 1));
@@ -147,7 +147,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
do {
page = NULL;
-@@ -2631,22 +2653,24 @@ struct page *buffered_rmqueue(struct zon
+@@ -2639,22 +2661,24 @@ struct page *buffered_rmqueue(struct zon
if (!page)
page = __rmqueue(zone, order, migratetype);
} while (page && check_new_pages(page, order));
@@ -176,7 +176,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
return NULL;
}
-@@ -6523,6 +6547,7 @@ static int page_alloc_cpu_notify(struct
+@@ -6531,6 +6555,7 @@ static int page_alloc_cpu_notify(struct
void __init page_alloc_init(void)
{
hotcpu_notifier(page_alloc_cpu_notify, 0);
@@ -184,7 +184,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
/*
-@@ -7351,7 +7376,7 @@ void zone_pcp_reset(struct zone *zone)
+@@ -7359,7 +7384,7 @@ void zone_pcp_reset(struct zone *zone)
struct per_cpu_pageset *pset;
/* avoid races with drain_pages() */
@@ -193,7 +193,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
if (zone->pageset != &boot_pageset) {
for_each_online_cpu(cpu) {
pset = per_cpu_ptr(zone->pageset, cpu);
-@@ -7360,7 +7385,7 @@ void zone_pcp_reset(struct zone *zone)
+@@ -7368,7 +7393,7 @@ void zone_pcp_reset(struct zone *zone)
free_percpu(zone->pageset);
zone->pageset = &boot_pageset;
}
diff --git a/debian/patches/features/all/rt/mm-perform-lru_add_drain_all-remotely.patch b/debian/patches/features/all/rt/mm-perform-lru_add_drain_all-remotely.patch
index 3345ee3..249c415 100644
--- a/debian/patches/features/all/rt/mm-perform-lru_add_drain_all-remotely.patch
+++ b/debian/patches/features/all/rt/mm-perform-lru_add_drain_all-remotely.patch
@@ -1,7 +1,7 @@
From: Luiz Capitulino <lcapitulino at redhat.com>
Date: Fri, 27 May 2016 15:03:28 +0200
Subject: [PATCH] mm: perform lru_add_drain_all() remotely
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
lru_add_drain_all() works by scheduling lru_add_drain_cpu() to run
on all CPUs that have non-empty LRU pagevecs and then waiting for
diff --git a/debian/patches/features/all/rt/mm-protect-activate-switch-mm.patch b/debian/patches/features/all/rt/mm-protect-activate-switch-mm.patch
index 887e63a..ec93fbc 100644
--- a/debian/patches/features/all/rt/mm-protect-activate-switch-mm.patch
+++ b/debian/patches/features/all/rt/mm-protect-activate-switch-mm.patch
@@ -1,7 +1,7 @@
From: Yong Zhang <yong.zhang0 at gmail.com>
Date: Tue, 15 May 2012 13:53:56 +0800
Subject: mm: Protect activate_mm() by preempt_[disable&enable]_rt()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
User preempt_*_rt instead of local_irq_*_rt or otherwise there will be
warning on ARM like below:
diff --git a/debian/patches/features/all/rt/mm-rt-kmap-atomic-scheduling.patch b/debian/patches/features/all/rt/mm-rt-kmap-atomic-scheduling.patch
index 6a7ab41..429802a 100644
--- a/debian/patches/features/all/rt/mm-rt-kmap-atomic-scheduling.patch
+++ b/debian/patches/features/all/rt/mm-rt-kmap-atomic-scheduling.patch
@@ -1,7 +1,7 @@
Subject: mm, rt: kmap_atomic scheduling
From: Peter Zijlstra <peterz at infradead.org>
Date: Thu, 28 Jul 2011 10:43:51 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
In fact, with migrate_disable() existing one could play games with
kmap_atomic. You could save/restore the kmap_atomic slots on context
@@ -230,7 +230,7 @@ Link: http://lkml.kernel.org/r/1311842631.5890.208.camel@twins
#include <asm/page.h>
#include <asm/ptrace.h>
-@@ -1979,6 +1980,12 @@ struct task_struct {
+@@ -1980,6 +1981,12 @@ struct task_struct {
int softirq_nestcnt;
unsigned int softirqs_raised;
#endif
diff --git a/debian/patches/features/all/rt/mm-scatterlist-dont-disable-irqs-on-RT.patch b/debian/patches/features/all/rt/mm-scatterlist-dont-disable-irqs-on-RT.patch
index 1b641e5..499e055 100644
--- a/debian/patches/features/all/rt/mm-scatterlist-dont-disable-irqs-on-RT.patch
+++ b/debian/patches/features/all/rt/mm-scatterlist-dont-disable-irqs-on-RT.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 3 Jul 2009 08:44:34 -0500
Subject: mm/scatterlist: Do not disable irqs on RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The local_irq_save() is not only used to get things done "fast" but
also to ensure that in case of SG_MITER_ATOMIC we are in "atomic"
diff --git a/debian/patches/features/all/rt/mm-vmalloc-use-get-cpu-light.patch b/debian/patches/features/all/rt/mm-vmalloc-use-get-cpu-light.patch
index aa6b339..fdeb7d98 100644
--- a/debian/patches/features/all/rt/mm-vmalloc-use-get-cpu-light.patch
+++ b/debian/patches/features/all/rt/mm-vmalloc-use-get-cpu-light.patch
@@ -1,7 +1,7 @@
Subject: mm/vmalloc: Another preempt disable region which sucks
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 12 Jul 2011 11:39:36 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Avoid the preempt disable version of get_cpu_var(). The inner-lock should
provide enough serialisation.
diff --git a/debian/patches/features/all/rt/mm-workingset-do-not-protect-workingset_shadow_nodes.patch b/debian/patches/features/all/rt/mm-workingset-do-not-protect-workingset_shadow_nodes.patch
index ba82834..c2b3b76 100644
--- a/debian/patches/features/all/rt/mm-workingset-do-not-protect-workingset_shadow_nodes.patch
+++ b/debian/patches/features/all/rt/mm-workingset-do-not-protect-workingset_shadow_nodes.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 29 Jan 2015 17:19:44 +0100
Subject: mm/workingset: Do not protect workingset_shadow_nodes with irq off
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
workingset_shadow_nodes is protected by local_irq_disable(). Some users
use spin_lock_irq().
@@ -26,7 +26,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
#include <asm/page.h>
struct notifier_block;
-@@ -246,7 +247,8 @@ struct swap_info_struct {
+@@ -247,7 +248,8 @@ struct swap_info_struct {
void *workingset_eviction(struct address_space *mapping, struct page *page);
bool workingset_refault(void *shadow);
void workingset_activation(struct page *page);
diff --git a/debian/patches/features/all/rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch b/debian/patches/features/all/rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch
index bb86b48..6376c4e 100644
--- a/debian/patches/features/all/rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch
+++ b/debian/patches/features/all/rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch
@@ -1,7 +1,7 @@
From: Mike Galbraith <umgwanakikbuti at gmail.com>
Date: Tue, 22 Mar 2016 11:16:09 +0100
Subject: [PATCH] mm/zsmalloc: copy with get_cpu_var() and locking
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
get_cpu_var() disables preemption and triggers a might_sleep() splat later.
This is replaced with get_locked_var().
diff --git a/debian/patches/features/all/rt/mmci-remove-bogus-irq-save.patch b/debian/patches/features/all/rt/mmci-remove-bogus-irq-save.patch
index a1ca8f4..adb8bb1 100644
--- a/debian/patches/features/all/rt/mmci-remove-bogus-irq-save.patch
+++ b/debian/patches/features/all/rt/mmci-remove-bogus-irq-save.patch
@@ -1,7 +1,7 @@
Subject: mmci: Remove bogus local_irq_save()
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 09 Jan 2013 12:11:12 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
On !RT interrupt runs with interrupts disabled. On RT it's in a
thread, so no need to disable interrupts at all.
diff --git a/debian/patches/features/all/rt/move_sched_delayed_work_to_helper.patch b/debian/patches/features/all/rt/move_sched_delayed_work_to_helper.patch
index 89278db..79cb240 100644
--- a/debian/patches/features/all/rt/move_sched_delayed_work_to_helper.patch
+++ b/debian/patches/features/all/rt/move_sched_delayed_work_to_helper.patch
@@ -1,7 +1,7 @@
Date: Wed, 26 Jun 2013 15:28:11 -0400
From: Steven Rostedt <rostedt at goodmis.org>
Subject: rt,ntp: Move call to schedule_delayed_work() to helper thread
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The ntp code for notify_cmos_timer() is called from a hard interrupt
context. schedule_delayed_work() under PREEMPT_RT_FULL calls spinlocks
diff --git a/debian/patches/features/all/rt/mutex-no-spin-on-rt.patch b/debian/patches/features/all/rt/mutex-no-spin-on-rt.patch
index 89e26ce..ab07440 100644
--- a/debian/patches/features/all/rt/mutex-no-spin-on-rt.patch
+++ b/debian/patches/features/all/rt/mutex-no-spin-on-rt.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 17 Jul 2011 21:51:45 +0200
Subject: locking: Disable spin on owner for RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Drop spin on owner for mutex / rwsem. We are most likely not using it
but…
diff --git a/debian/patches/features/all/rt/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch b/debian/patches/features/all/rt/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch
index 4faf187..77531f6 100644
--- a/debian/patches/features/all/rt/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch
+++ b/debian/patches/features/all/rt/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch
@@ -2,7 +2,7 @@ From: Steven Rostedt <rostedt at goodmis.org>
Date: Tue, 6 Dec 2016 17:50:30 -0500
Subject: [PATCH] net: Have __napi_schedule_irqoff() disable interrupts on
RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
A customer hit a crash where the napi sd->poll_list became corrupted.
The customer had the bnx2x driver, which does a
@@ -51,7 +51,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
{
--- a/net/core/dev.c
+++ b/net/core/dev.c
-@@ -4914,6 +4914,7 @@ void __napi_schedule(struct napi_struct
+@@ -4916,6 +4916,7 @@ void __napi_schedule(struct napi_struct
}
EXPORT_SYMBOL(__napi_schedule);
@@ -59,7 +59,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
/**
* __napi_schedule_irqoff - schedule for receive
* @n: entry to schedule
-@@ -4925,6 +4926,7 @@ void __napi_schedule_irqoff(struct napi_
+@@ -4927,6 +4928,7 @@ void __napi_schedule_irqoff(struct napi_
____napi_schedule(this_cpu_ptr(&softnet_data), n);
}
EXPORT_SYMBOL(__napi_schedule_irqoff);
diff --git a/debian/patches/features/all/rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch b/debian/patches/features/all/rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch
index 03d435e..82e3f68 100644
--- a/debian/patches/features/all/rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch
+++ b/debian/patches/features/all/rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 14 Sep 2016 17:36:35 +0200
Subject: [PATCH] net/Qdisc: use a seqlock instead seqcount
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The seqcount disables preemption on -RT while it is held which can't
remove. Also we don't want the reader to spin for ages if the writer is
diff --git a/debian/patches/features/all/rt/net-add-a-lock-around-icmp_sk.patch b/debian/patches/features/all/rt/net-add-a-lock-around-icmp_sk.patch
index 406491c..c3ebef0 100644
--- a/debian/patches/features/all/rt/net-add-a-lock-around-icmp_sk.patch
+++ b/debian/patches/features/all/rt/net-add-a-lock-around-icmp_sk.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 31 Aug 2016 17:54:09 +0200
Subject: [PATCH] net: add a lock around icmp_sk()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
It looks like the this_cpu_ptr() access in icmp_sk() is protected with
local_bh_disable(). To avoid missing serialization in -RT I am adding
diff --git a/debian/patches/features/all/rt/net-add-back-the-missing-serialization-in-ip_send_un.patch b/debian/patches/features/all/rt/net-add-back-the-missing-serialization-in-ip_send_un.patch
index 2890a5d..162c070 100644
--- a/debian/patches/features/all/rt/net-add-back-the-missing-serialization-in-ip_send_un.patch
+++ b/debian/patches/features/all/rt/net-add-back-the-missing-serialization-in-ip_send_un.patch
@@ -5,7 +5,7 @@ Subject: [PATCH] net: add back the missing serialization in
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Some time ago Sami Pietikäinen reported a crash on -RT in
ip_send_unicast_reply() which was later fixed by Nicholas Mc Guire
diff --git a/debian/patches/features/all/rt/net-another-local-irq-disable-alloc-atomic-headache.patch b/debian/patches/features/all/rt/net-another-local-irq-disable-alloc-atomic-headache.patch
index 3b0532d..d1a3ee1 100644
--- a/debian/patches/features/all/rt/net-another-local-irq-disable-alloc-atomic-headache.patch
+++ b/debian/patches/features/all/rt/net-another-local-irq-disable-alloc-atomic-headache.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 26 Sep 2012 16:21:08 +0200
Subject: net: Another local_irq_disable/kmalloc headache
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Replace it by a local lock. Though that's pretty inefficient :(
diff --git a/debian/patches/features/all/rt/net-core-cpuhotplug-drain-input_pkt_queue-lockless.patch b/debian/patches/features/all/rt/net-core-cpuhotplug-drain-input_pkt_queue-lockless.patch
index a7ddead..b539b10 100644
--- a/debian/patches/features/all/rt/net-core-cpuhotplug-drain-input_pkt_queue-lockless.patch
+++ b/debian/patches/features/all/rt/net-core-cpuhotplug-drain-input_pkt_queue-lockless.patch
@@ -1,7 +1,7 @@
Subject: net/core/cpuhotplug: Drain input_pkt_queue lockless
From: Grygorii Strashko <grygorii.strashko at ti.com>
Date: Fri, 9 Oct 2015 09:25:49 -0500
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
I can constantly see below error report with 4.1 RT-kernel on TI ARM dra7-evm
if I'm trying to unplug cpu1:
@@ -36,7 +36,7 @@ Cc: stable-rt at vger.kernel.org
--- a/net/core/dev.c
+++ b/net/core/dev.c
-@@ -8022,7 +8022,7 @@ static int dev_cpu_callback(struct notif
+@@ -8024,7 +8024,7 @@ static int dev_cpu_callback(struct notif
netif_rx_ni(skb);
input_queue_head_incr(oldsd);
}
diff --git a/debian/patches/features/all/rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch b/debian/patches/features/all/rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch
index 04abd8c..413674b 100644
--- a/debian/patches/features/all/rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch
+++ b/debian/patches/features/all/rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch
@@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 15 Jan 2016 16:33:34 +0100
Subject: net/core: protect users of napi_alloc_cache against
reentrance
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
On -RT the code running in BH can not be moved to another CPU so CPU
local variable remain local. However the code can be preempted
diff --git a/debian/patches/features/all/rt/net-dev-always-take-qdisc-s-busylock-in-__dev_xmit_s.patch b/debian/patches/features/all/rt/net-dev-always-take-qdisc-s-busylock-in-__dev_xmit_s.patch
index 84d4397..7b83c35 100644
--- a/debian/patches/features/all/rt/net-dev-always-take-qdisc-s-busylock-in-__dev_xmit_s.patch
+++ b/debian/patches/features/all/rt/net-dev-always-take-qdisc-s-busylock-in-__dev_xmit_s.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 30 Mar 2016 13:36:29 +0200
Subject: [PATCH] net: dev: always take qdisc's busylock in __dev_xmit_skb()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The root-lock is dropped before dev_hard_start_xmit() is invoked and after
setting the __QDISC___STATE_RUNNING bit. If this task is now pushed away
diff --git a/debian/patches/features/all/rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch b/debian/patches/features/all/rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch
index c8c4c5a..308e8d3 100644
--- a/debian/patches/features/all/rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch
+++ b/debian/patches/features/all/rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch
@@ -1,7 +1,7 @@
Subject: net: netfilter: Serialize xt_write_recseq sections on RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 28 Oct 2012 11:18:08 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The netfilter code relies only on the implicit semantics of
local_bh_disable() for serializing wt_write_recseq sections. RT breaks
diff --git a/debian/patches/features/all/rt/net-make-devnet_rename_seq-a-mutex.patch b/debian/patches/features/all/rt/net-make-devnet_rename_seq-a-mutex.patch
index 9bd5ea3..8a58cf9 100644
--- a/debian/patches/features/all/rt/net-make-devnet_rename_seq-a-mutex.patch
+++ b/debian/patches/features/all/rt/net-make-devnet_rename_seq-a-mutex.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 20 Mar 2013 18:06:20 +0100
Subject: net: Add a mutex around devnet_rename_seq
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
On RT write_seqcount_begin() disables preemption and device_rename()
allocates memory with GFP_KERNEL and grabs later the sysfs_mutex
diff --git a/debian/patches/features/all/rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch b/debian/patches/features/all/rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch
index 54f3455..e686880 100644
--- a/debian/patches/features/all/rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch
+++ b/debian/patches/features/all/rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 13 Jan 2016 15:55:02 +0100
Subject: net: move xmit_recursion to per-task variable on -RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
A softirq on -RT can be preempted. That means one task is in
__dev_queue_xmit(), gets preempted and another task may enter
@@ -81,7 +81,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex);
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
-@@ -1982,6 +1982,9 @@ struct task_struct {
+@@ -1983,6 +1983,9 @@ struct task_struct {
#ifdef CONFIG_DEBUG_ATOMIC_SLEEP
unsigned long task_state_change;
#endif
diff --git a/debian/patches/features/all/rt/net-prevent-abba-deadlock.patch b/debian/patches/features/all/rt/net-prevent-abba-deadlock.patch
index 7e5f298..ad3c553 100644
--- a/debian/patches/features/all/rt/net-prevent-abba-deadlock.patch
+++ b/debian/patches/features/all/rt/net-prevent-abba-deadlock.patch
@@ -1,7 +1,7 @@
Subject: net-flip-lock-dep-thingy.patch
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 28 Jun 2011 10:59:58 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
=======================================================
[ INFO: possible circular locking dependency detected ]
diff --git a/debian/patches/features/all/rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch b/debian/patches/features/all/rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch
index 15a2d78..6115960 100644
--- a/debian/patches/features/all/rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch
+++ b/debian/patches/features/all/rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch
@@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 20 Jan 2016 15:39:05 +0100
Subject: net: provide a way to delegate processing a softirq to
ksoftirqd
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
If the NET_RX uses up all of his budget it moves the following NAPI
invocations into the `ksoftirqd`. On -RT it does not do so. Instead it
@@ -68,7 +68,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
void raise_softirq_irqoff(unsigned int nr)
--- a/net/core/dev.c
+++ b/net/core/dev.c
-@@ -5255,7 +5255,7 @@ static __latent_entropy void net_rx_acti
+@@ -5257,7 +5257,7 @@ static __latent_entropy void net_rx_acti
list_splice_tail(&repoll, &list);
list_splice(&list, &sd->poll_list);
if (!list_empty(&sd->poll_list))
diff --git a/debian/patches/features/all/rt/net-sched-dev_deactivate_many-use-msleep-1-instead-o.patch b/debian/patches/features/all/rt/net-sched-dev_deactivate_many-use-msleep-1-instead-o.patch
index e7093b6..3131cef 100644
--- a/debian/patches/features/all/rt/net-sched-dev_deactivate_many-use-msleep-1-instead-o.patch
+++ b/debian/patches/features/all/rt/net-sched-dev_deactivate_many-use-msleep-1-instead-o.patch
@@ -1,7 +1,7 @@
From: Marc Kleine-Budde <mkl at pengutronix.de>
Date: Wed, 5 Mar 2014 00:49:47 +0100
Subject: net: sched: Use msleep() instead of yield()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
On PREEMPT_RT enabled systems the interrupt handler run as threads at prio 50
(by default). If a high priority userspace process tries to shut down a busy
diff --git a/debian/patches/features/all/rt/net-use-cpu-chill.patch b/debian/patches/features/all/rt/net-use-cpu-chill.patch
index c61ece2..bd3ecbe 100644
--- a/debian/patches/features/all/rt/net-use-cpu-chill.patch
+++ b/debian/patches/features/all/rt/net-use-cpu-chill.patch
@@ -1,7 +1,7 @@
Subject: net: Use cpu_chill() instead of cpu_relax()
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 07 Mar 2012 21:10:04 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Retry loops on RT might loop forever when the modifying side was
preempted. Use cpu_chill() instead of cpu_relax() to let the system
diff --git a/debian/patches/features/all/rt/net-wireless-warn-nort.patch b/debian/patches/features/all/rt/net-wireless-warn-nort.patch
index be4d8f1..09a57b5 100644
--- a/debian/patches/features/all/rt/net-wireless-warn-nort.patch
+++ b/debian/patches/features/all/rt/net-wireless-warn-nort.patch
@@ -1,7 +1,7 @@
Subject: net/wireless: Use WARN_ON_NORT()
From: Thomas Gleixner <tglx at linutronix.de>
Date: Thu, 21 Jul 2011 21:05:33 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The softirq counter is meaningless on RT, so the check triggers a
false positive.
@@ -13,7 +13,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
-@@ -4156,7 +4156,7 @@ void ieee80211_rx_napi(struct ieee80211_
+@@ -4166,7 +4166,7 @@ void ieee80211_rx_napi(struct ieee80211_
struct ieee80211_supported_band *sband;
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
diff --git a/debian/patches/features/all/rt/oleg-signal-rt-fix.patch b/debian/patches/features/all/rt/oleg-signal-rt-fix.patch
index 58eb72f..e853559 100644
--- a/debian/patches/features/all/rt/oleg-signal-rt-fix.patch
+++ b/debian/patches/features/all/rt/oleg-signal-rt-fix.patch
@@ -1,7 +1,7 @@
From: Oleg Nesterov <oleg at redhat.com>
Date: Tue, 14 Jul 2015 14:26:34 +0200
Subject: signal/x86: Delay calling signals in atomic
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
On x86_64 we must disable preemption before we enable interrupts
for stack faults, int3 and debugging, because the current task is using
@@ -77,7 +77,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
#endif
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
-@@ -1695,6 +1695,10 @@ struct task_struct {
+@@ -1696,6 +1696,10 @@ struct task_struct {
sigset_t blocked, real_blocked;
sigset_t saved_sigmask; /* restored if set_restore_sigmask() was used */
struct sigpending pending;
diff --git a/debian/patches/features/all/rt/panic-disable-random-on-rt.patch b/debian/patches/features/all/rt/panic-disable-random-on-rt.patch
index dfc0131..0a5605c 100644
--- a/debian/patches/features/all/rt/panic-disable-random-on-rt.patch
+++ b/debian/patches/features/all/rt/panic-disable-random-on-rt.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 14 Jul 2015 14:26:34 +0200
Subject: panic: skip get_random_bytes for RT_FULL in init_oops_id
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Disable on -RT. If this is invoked from irq-context we will have problems
to acquire the sleeping lock.
diff --git a/debian/patches/features/all/rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch b/debian/patches/features/all/rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch
index c060ec9..f68c0ff 100644
--- a/debian/patches/features/all/rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch
+++ b/debian/patches/features/all/rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch
@@ -1,7 +1,7 @@
Subject: rcu: Make ksoftirqd do RCU quiescent states
From: "Paul E. McKenney" <paulmck at linux.vnet.ibm.com>
Date: Wed, 5 Oct 2011 11:45:18 -0700
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Implementing RCU-bh in terms of RCU-preempt makes the system vulnerable
to network-based denial-of-service attacks. This patch therefore
@@ -45,7 +45,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
void rcu_cpu_starting(unsigned int cpu);
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
-@@ -257,7 +257,14 @@ void rcu_sched_qs(void)
+@@ -260,7 +260,14 @@ void rcu_sched_qs(void)
this_cpu_ptr(&rcu_sched_data), true);
}
diff --git a/debian/patches/features/all/rt/pci-access-use-__wake_up_all_locked.patch b/debian/patches/features/all/rt/pci-access-use-__wake_up_all_locked.patch
index cd4d576..e739a99 100644
--- a/debian/patches/features/all/rt/pci-access-use-__wake_up_all_locked.patch
+++ b/debian/patches/features/all/rt/pci-access-use-__wake_up_all_locked.patch
@@ -1,7 +1,7 @@
Subject: pci: Use __wake_up_all_locked in pci_unblock_user_cfg_access()
From: Thomas Gleixner <tglx at linutronix.de>
Date: Thu, 01 Dec 2011 00:07:16 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The waitqueue is protected by the pci_lock, so we can just avoid to
lock the waitqueue lock itself. That prevents the
diff --git a/debian/patches/features/all/rt/percpu_ida-use-locklocks.patch b/debian/patches/features/all/rt/percpu_ida-use-locklocks.patch
index 372a693..035559d 100644
--- a/debian/patches/features/all/rt/percpu_ida-use-locklocks.patch
+++ b/debian/patches/features/all/rt/percpu_ida-use-locklocks.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 9 Apr 2014 11:58:17 +0200
Subject: percpu_ida: Use local locks
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
the local_irq_save() + spin_lock() does not work that well on -RT
diff --git a/debian/patches/features/all/rt/perf-make-swevent-hrtimer-irqsafe.patch b/debian/patches/features/all/rt/perf-make-swevent-hrtimer-irqsafe.patch
index a91cdf6..ff6e5dd 100644
--- a/debian/patches/features/all/rt/perf-make-swevent-hrtimer-irqsafe.patch
+++ b/debian/patches/features/all/rt/perf-make-swevent-hrtimer-irqsafe.patch
@@ -1,7 +1,7 @@
From: Yong Zhang <yong.zhang at windriver.com>
Date: Wed, 11 Jul 2012 22:05:21 +0000
Subject: perf: Make swevent hrtimer run in irq instead of softirq
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Otherwise we get a deadlock like below:
diff --git a/debian/patches/features/all/rt/peter_zijlstra-frob-rcu.patch b/debian/patches/features/all/rt/peter_zijlstra-frob-rcu.patch
index 96440e1..27ad90e 100644
--- a/debian/patches/features/all/rt/peter_zijlstra-frob-rcu.patch
+++ b/debian/patches/features/all/rt/peter_zijlstra-frob-rcu.patch
@@ -1,7 +1,7 @@
Subject: rcu: Frob softirq test
From: Peter Zijlstra <a.p.zijlstra at chello.nl>
Date: Sat Aug 13 00:23:17 CEST 2011
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
With RT_FULL we get the below wreckage:
diff --git a/debian/patches/features/all/rt/peterz-percpu-rwsem-rt.patch b/debian/patches/features/all/rt/peterz-percpu-rwsem-rt.patch
index b8ecd73..95e49d0 100644
--- a/debian/patches/features/all/rt/peterz-percpu-rwsem-rt.patch
+++ b/debian/patches/features/all/rt/peterz-percpu-rwsem-rt.patch
@@ -1,7 +1,7 @@
Subject: locking/percpu-rwsem: Remove preempt_disable variants
From: Peter Zijlstra <peterz at infradead.org>
Date: Wed Nov 23 16:29:32 CET 2016
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Effective revert commit:
diff --git a/debian/patches/features/all/rt/peterz-srcu-crypto-chain.patch b/debian/patches/features/all/rt/peterz-srcu-crypto-chain.patch
index 9c58c96..1cecf39 100644
--- a/debian/patches/features/all/rt/peterz-srcu-crypto-chain.patch
+++ b/debian/patches/features/all/rt/peterz-srcu-crypto-chain.patch
@@ -1,7 +1,7 @@
Subject: crypto: Convert crypto notifier chain to SRCU
From: Peter Zijlstra <peterz at infradead.org>
Date: Fri, 05 Oct 2012 09:03:24 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The crypto notifier deadlocks on RT. Though this can be a real deadlock
on mainline as well due to fifo fair rwsems.
diff --git a/debian/patches/features/all/rt/pid.h-include-atomic.h.patch b/debian/patches/features/all/rt/pid.h-include-atomic.h.patch
index 422ba18..90d2770 100644
--- a/debian/patches/features/all/rt/pid.h-include-atomic.h.patch
+++ b/debian/patches/features/all/rt/pid.h-include-atomic.h.patch
@@ -1,7 +1,7 @@
From: Grygorii Strashko <Grygorii.Strashko at linaro.org>
Date: Tue, 21 Jul 2015 19:43:56 +0300
Subject: pid.h: include atomic.h
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
This patch fixes build error:
CC kernel/pid_namespace.o
diff --git a/debian/patches/features/all/rt/pinctrl-qcom-Use-raw-spinlock-variants.patch b/debian/patches/features/all/rt/pinctrl-qcom-Use-raw-spinlock-variants.patch
new file mode 100644
index 0000000..4192af8
--- /dev/null
+++ b/debian/patches/features/all/rt/pinctrl-qcom-Use-raw-spinlock-variants.patch
@@ -0,0 +1,253 @@
+From: Julia Cartwright <julia at ni.com>
+Date: Fri, 20 Jan 2017 10:13:47 -0600
+Subject: [PATCH] pinctrl: qcom: Use raw spinlock variants
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
+
+The MSM pinctrl driver currently implements an irq_chip for handling
+GPIO interrupts; due to how irq_chip handling is done, it's necessary
+for the irq_chip methods to be invoked from hardirq context, even on a
+a real-time kernel. Because the spinlock_t type becomes a "sleeping"
+spinlock w/ RT kernels, it is not suitable to be used with irq_chips.
+
+A quick audit of the operations under the lock reveal that they do only
+minimal, bounded work, and are therefore safe to do under a raw
+spinlock.
+
+On real-time kernels, this fixes an OOPs which looks like the following,
+as reported by Brian Wrenn:
+
+ kernel BUG at kernel/locking/rtmutex.c:1014!
+ Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
+ Modules linked in: spidev_irq(O) smsc75xx wcn36xx [last unloaded: spidev]
+ CPU: 0 PID: 1163 Comm: irq/144-mmc0 Tainted: G W O 4.4.9-linaro-lt-qcom #1
+ PC is at rt_spin_lock_slowlock+0x80/0x2d8
+ LR is at rt_spin_lock_slowlock+0x68/0x2d8
+ [..]
+ Call trace:
+ rt_spin_lock_slowlock
+ rt_spin_lock
+ msm_gpio_irq_ack
+ handle_edge_irq
+ generic_handle_irq
+ msm_gpio_irq_handler
+ generic_handle_irq
+ __handle_domain_irq
+ gic_handle_irq
+
+Cc: stable-rt at vger.kernel.org
+Cc: Bjorn Andersson <bjorn.andersson at linaro.org>
+Reported-by: Brian Wrenn <dcbrianw at gmail.com>
+Tested-by: Brian Wrenn <dcbrianw at gmail.com>
+Signed-off-by: Julia Cartwright <julia at ni.com>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ drivers/pinctrl/qcom/pinctrl-msm.c | 48 ++++++++++++++++++-------------------
+ 1 file changed, 24 insertions(+), 24 deletions(-)
+
+--- a/drivers/pinctrl/qcom/pinctrl-msm.c
++++ b/drivers/pinctrl/qcom/pinctrl-msm.c
+@@ -61,7 +61,7 @@ struct msm_pinctrl {
+ struct notifier_block restart_nb;
+ int irq;
+
+- spinlock_t lock;
++ raw_spinlock_t lock;
+
+ DECLARE_BITMAP(dual_edge_irqs, MAX_NR_GPIO);
+ DECLARE_BITMAP(enabled_irqs, MAX_NR_GPIO);
+@@ -153,14 +153,14 @@ static int msm_pinmux_set_mux(struct pin
+ if (WARN_ON(i == g->nfuncs))
+ return -EINVAL;
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&pctrl->lock, flags);
+
+ val = readl(pctrl->regs + g->ctl_reg);
+ val &= ~mask;
+ val |= i << g->mux_bit;
+ writel(val, pctrl->regs + g->ctl_reg);
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&pctrl->lock, flags);
+
+ return 0;
+ }
+@@ -323,14 +323,14 @@ static int msm_config_group_set(struct p
+ break;
+ case PIN_CONFIG_OUTPUT:
+ /* set output value */
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&pctrl->lock, flags);
+ val = readl(pctrl->regs + g->io_reg);
+ if (arg)
+ val |= BIT(g->out_bit);
+ else
+ val &= ~BIT(g->out_bit);
+ writel(val, pctrl->regs + g->io_reg);
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&pctrl->lock, flags);
+
+ /* enable output */
+ arg = 1;
+@@ -351,12 +351,12 @@ static int msm_config_group_set(struct p
+ return -EINVAL;
+ }
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&pctrl->lock, flags);
+ val = readl(pctrl->regs + g->ctl_reg);
+ val &= ~(mask << bit);
+ val |= arg << bit;
+ writel(val, pctrl->regs + g->ctl_reg);
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&pctrl->lock, flags);
+ }
+
+ return 0;
+@@ -384,13 +384,13 @@ static int msm_gpio_direction_input(stru
+
+ g = &pctrl->soc->groups[offset];
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&pctrl->lock, flags);
+
+ val = readl(pctrl->regs + g->ctl_reg);
+ val &= ~BIT(g->oe_bit);
+ writel(val, pctrl->regs + g->ctl_reg);
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&pctrl->lock, flags);
+
+ return 0;
+ }
+@@ -404,7 +404,7 @@ static int msm_gpio_direction_output(str
+
+ g = &pctrl->soc->groups[offset];
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&pctrl->lock, flags);
+
+ val = readl(pctrl->regs + g->io_reg);
+ if (value)
+@@ -417,7 +417,7 @@ static int msm_gpio_direction_output(str
+ val |= BIT(g->oe_bit);
+ writel(val, pctrl->regs + g->ctl_reg);
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&pctrl->lock, flags);
+
+ return 0;
+ }
+@@ -443,7 +443,7 @@ static void msm_gpio_set(struct gpio_chi
+
+ g = &pctrl->soc->groups[offset];
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&pctrl->lock, flags);
+
+ val = readl(pctrl->regs + g->io_reg);
+ if (value)
+@@ -452,7 +452,7 @@ static void msm_gpio_set(struct gpio_chi
+ val &= ~BIT(g->out_bit);
+ writel(val, pctrl->regs + g->io_reg);
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&pctrl->lock, flags);
+ }
+
+ #ifdef CONFIG_DEBUG_FS
+@@ -571,7 +571,7 @@ static void msm_gpio_irq_mask(struct irq
+
+ g = &pctrl->soc->groups[d->hwirq];
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&pctrl->lock, flags);
+
+ val = readl(pctrl->regs + g->intr_cfg_reg);
+ val &= ~BIT(g->intr_enable_bit);
+@@ -579,7 +579,7 @@ static void msm_gpio_irq_mask(struct irq
+
+ clear_bit(d->hwirq, pctrl->enabled_irqs);
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&pctrl->lock, flags);
+ }
+
+ static void msm_gpio_irq_unmask(struct irq_data *d)
+@@ -592,7 +592,7 @@ static void msm_gpio_irq_unmask(struct i
+
+ g = &pctrl->soc->groups[d->hwirq];
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&pctrl->lock, flags);
+
+ val = readl(pctrl->regs + g->intr_status_reg);
+ val &= ~BIT(g->intr_status_bit);
+@@ -604,7 +604,7 @@ static void msm_gpio_irq_unmask(struct i
+
+ set_bit(d->hwirq, pctrl->enabled_irqs);
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&pctrl->lock, flags);
+ }
+
+ static void msm_gpio_irq_ack(struct irq_data *d)
+@@ -617,7 +617,7 @@ static void msm_gpio_irq_ack(struct irq_
+
+ g = &pctrl->soc->groups[d->hwirq];
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&pctrl->lock, flags);
+
+ val = readl(pctrl->regs + g->intr_status_reg);
+ if (g->intr_ack_high)
+@@ -629,7 +629,7 @@ static void msm_gpio_irq_ack(struct irq_
+ if (test_bit(d->hwirq, pctrl->dual_edge_irqs))
+ msm_gpio_update_dual_edge_pos(pctrl, g, d);
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&pctrl->lock, flags);
+ }
+
+ static int msm_gpio_irq_set_type(struct irq_data *d, unsigned int type)
+@@ -642,7 +642,7 @@ static int msm_gpio_irq_set_type(struct
+
+ g = &pctrl->soc->groups[d->hwirq];
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&pctrl->lock, flags);
+
+ /*
+ * For hw without possibility of detecting both edges
+@@ -716,7 +716,7 @@ static int msm_gpio_irq_set_type(struct
+ if (test_bit(d->hwirq, pctrl->dual_edge_irqs))
+ msm_gpio_update_dual_edge_pos(pctrl, g, d);
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&pctrl->lock, flags);
+
+ if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
+ irq_set_handler_locked(d, handle_level_irq);
+@@ -732,11 +732,11 @@ static int msm_gpio_irq_set_wake(struct
+ struct msm_pinctrl *pctrl = gpiochip_get_data(gc);
+ unsigned long flags;
+
+- spin_lock_irqsave(&pctrl->lock, flags);
++ raw_spin_lock_irqsave(&pctrl->lock, flags);
+
+ irq_set_irq_wake(pctrl->irq, on);
+
+- spin_unlock_irqrestore(&pctrl->lock, flags);
++ raw_spin_unlock_irqrestore(&pctrl->lock, flags);
+
+ return 0;
+ }
+@@ -882,7 +882,7 @@ int msm_pinctrl_probe(struct platform_de
+ pctrl->soc = soc_data;
+ pctrl->chip = msm_gpio_template;
+
+- spin_lock_init(&pctrl->lock);
++ raw_spin_lock_init(&pctrl->lock);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ pctrl->regs = devm_ioremap_resource(&pdev->dev, res);
diff --git a/debian/patches/features/all/rt/ping-sysrq.patch b/debian/patches/features/all/rt/ping-sysrq.patch
index 5d243a9..1228dea 100644
--- a/debian/patches/features/all/rt/ping-sysrq.patch
+++ b/debian/patches/features/all/rt/ping-sysrq.patch
@@ -1,7 +1,7 @@
Subject: net: sysrq via icmp
From: Carsten Emde <C.Emde at osadl.org>
Date: Tue, 19 Jul 2011 13:51:17 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
There are (probably rare) situations when a system crashed and the system
console becomes unresponsive but the network icmp layer still is alive.
diff --git a/debian/patches/features/all/rt/posix-timers-no-broadcast.patch b/debian/patches/features/all/rt/posix-timers-no-broadcast.patch
index 946c89a..9eaf321 100644
--- a/debian/patches/features/all/rt/posix-timers-no-broadcast.patch
+++ b/debian/patches/features/all/rt/posix-timers-no-broadcast.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 3 Jul 2009 08:29:20 -0500
Subject: posix-timers: Prevent broadcast signals
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Posix timers should not send broadcast signals and kernel only
signals. Prevent it.
diff --git a/debian/patches/features/all/rt/posix-timers-thread-posix-cpu-timers-on-rt.patch b/debian/patches/features/all/rt/posix-timers-thread-posix-cpu-timers-on-rt.patch
index 909692f..e09f3bd 100644
--- a/debian/patches/features/all/rt/posix-timers-thread-posix-cpu-timers-on-rt.patch
+++ b/debian/patches/features/all/rt/posix-timers-thread-posix-cpu-timers-on-rt.patch
@@ -1,7 +1,7 @@
From: John Stultz <johnstul at us.ibm.com>
Date: Fri, 3 Jul 2009 08:29:58 -0500
Subject: posix-timers: Thread posix-cpu-timers on -rt
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
posix-cpu-timer code takes non -rt safe locks in hard irq
context. Move it to a thread.
@@ -55,7 +55,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
const struct cred __rcu *ptracer_cred; /* Tracer's credentials at attach */
--- a/kernel/fork.c
+++ b/kernel/fork.c
-@@ -1431,6 +1431,9 @@ static void rt_mutex_init_task(struct ta
+@@ -1426,6 +1426,9 @@ static void rt_mutex_init_task(struct ta
*/
static void posix_cpu_timers_init(struct task_struct *tsk)
{
diff --git a/debian/patches/features/all/rt/power-disable-highmem-on-rt.patch b/debian/patches/features/all/rt/power-disable-highmem-on-rt.patch
index cb760e9..fd896f3 100644
--- a/debian/patches/features/all/rt/power-disable-highmem-on-rt.patch
+++ b/debian/patches/features/all/rt/power-disable-highmem-on-rt.patch
@@ -1,7 +1,7 @@
Subject: powerpc: Disable highmem on RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Mon, 18 Jul 2011 17:08:34 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The current highmem handling on -RT is not compatible and needs fixups.
diff --git a/debian/patches/features/all/rt/power-use-generic-rwsem-on-rt.patch b/debian/patches/features/all/rt/power-use-generic-rwsem-on-rt.patch
index f11b8d5..17b74f0 100644
--- a/debian/patches/features/all/rt/power-use-generic-rwsem-on-rt.patch
+++ b/debian/patches/features/all/rt/power-use-generic-rwsem-on-rt.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 14 Jul 2015 14:26:34 +0200
Subject: powerpc: Use generic rwsem on RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Use generic code which uses rtmutex
diff --git a/debian/patches/features/all/rt/powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch b/debian/patches/features/all/rt/powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch
index 1f956fc..5a816fb 100644
--- a/debian/patches/features/all/rt/powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch
+++ b/debian/patches/features/all/rt/powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch
@@ -1,7 +1,7 @@
From: Bogdan Purcareata <bogdan.purcareata at freescale.com>
Date: Fri, 24 Apr 2015 15:53:13 +0000
Subject: powerpc/kvm: Disable in-kernel MPIC emulation for PREEMPT_RT_FULL
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
While converting the openpic emulation code to use a raw_spinlock_t enables
guests to run on RT, there's still a performance issue. For interrupts sent in
diff --git a/debian/patches/features/all/rt/powerpc-preempt-lazy-support.patch b/debian/patches/features/all/rt/powerpc-preempt-lazy-support.patch
index 42b8fa0..3dda445 100644
--- a/debian/patches/features/all/rt/powerpc-preempt-lazy-support.patch
+++ b/debian/patches/features/all/rt/powerpc-preempt-lazy-support.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Thu, 1 Nov 2012 10:14:11 +0100
Subject: powerpc: Add support for lazy preemption
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Implement the powerpc pieces for lazy preempt.
diff --git a/debian/patches/features/all/rt/powerpc-ps3-device-init.c-adapt-to-completions-using.patch b/debian/patches/features/all/rt/powerpc-ps3-device-init.c-adapt-to-completions-using.patch
index 6235bb7..0f9659f 100644
--- a/debian/patches/features/all/rt/powerpc-ps3-device-init.c-adapt-to-completions-using.patch
+++ b/debian/patches/features/all/rt/powerpc-ps3-device-init.c-adapt-to-completions-using.patch
@@ -1,7 +1,7 @@
From: Paul Gortmaker <paul.gortmaker at windriver.com>
Date: Sun, 31 May 2015 14:44:42 -0400
Subject: powerpc: ps3/device-init.c - adapt to completions using swait vs wait
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
To fix:
diff --git a/debian/patches/features/all/rt/preempt-lazy-support.patch b/debian/patches/features/all/rt/preempt-lazy-support.patch
index 711947e..5252627 100644
--- a/debian/patches/features/all/rt/preempt-lazy-support.patch
+++ b/debian/patches/features/all/rt/preempt-lazy-support.patch
@@ -1,7 +1,7 @@
Subject: sched: Add support for lazy preemption
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 26 Oct 2012 18:50:54 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
It has become an obsession to mitigate the determinism vs. throughput
loss of RT. Looking at the mainline semantics of preemption points
@@ -128,7 +128,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
-@@ -3342,6 +3342,43 @@ static inline int test_tsk_need_resched(
+@@ -3343,6 +3343,43 @@ static inline int test_tsk_need_resched(
return unlikely(test_tsk_thread_flag(tsk,TIF_NEED_RESCHED));
}
diff --git a/debian/patches/features/all/rt/preempt-nort-rt-variants.patch b/debian/patches/features/all/rt/preempt-nort-rt-variants.patch
index 571ea6e..338dbca 100644
--- a/debian/patches/features/all/rt/preempt-nort-rt-variants.patch
+++ b/debian/patches/features/all/rt/preempt-nort-rt-variants.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 24 Jul 2009 12:38:56 +0200
Subject: preempt: Provide preempt_*_(no)rt variants
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
RT needs a few preempt_disable/enable points which are not necessary
otherwise. Implement variants to avoid #ifdeffery.
diff --git a/debian/patches/features/all/rt/printk-27force_early_printk-27-boot-param-to-help-with-debugging.patch b/debian/patches/features/all/rt/printk-27force_early_printk-27-boot-param-to-help-with-debugging.patch
index a5f1076..f81b45b 100644
--- a/debian/patches/features/all/rt/printk-27force_early_printk-27-boot-param-to-help-with-debugging.patch
+++ b/debian/patches/features/all/rt/printk-27force_early_printk-27-boot-param-to-help-with-debugging.patch
@@ -1,7 +1,7 @@
Subject: printk: Add "force_early_printk" boot param to help with debugging
From: Peter Zijlstra <peterz at infradead.org>
Date: Fri, 02 Sep 2011 14:41:29 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Gives me an option to screw printk and actually see what the machine
says.
diff --git a/debian/patches/features/all/rt/printk-kill.patch b/debian/patches/features/all/rt/printk-kill.patch
index 09764aa..aea18c5 100644
--- a/debian/patches/features/all/rt/printk-kill.patch
+++ b/debian/patches/features/all/rt/printk-kill.patch
@@ -1,7 +1,7 @@
Subject: printk: Add a printk kill switch
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 22 Jul 2011 17:58:40 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Add a prinkt-kill-switch. This is used from (NMI) watchdog to ensure that
it does not dead-lock with the early printk code.
@@ -140,7 +140,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
static struct perf_event_attr wd_hw_attr = {
.type = PERF_TYPE_HARDWARE,
.config = PERF_COUNT_HW_CPU_CYCLES,
-@@ -349,6 +351,13 @@ static void watchdog_overflow_callback(s
+@@ -348,6 +350,13 @@ static void watchdog_overflow_callback(s
/* only print hardlockups once */
if (__this_cpu_read(hard_watchdog_warn) == true)
return;
@@ -154,7 +154,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
pr_emerg("Watchdog detected hard LOCKUP on cpu %d", this_cpu);
print_modules();
-@@ -366,6 +375,7 @@ static void watchdog_overflow_callback(s
+@@ -365,6 +374,7 @@ static void watchdog_overflow_callback(s
!test_and_set_bit(0, &hardlockup_allcpu_dumped))
trigger_allbutself_cpu_backtrace();
diff --git a/debian/patches/features/all/rt/printk-rt-aware.patch b/debian/patches/features/all/rt/printk-rt-aware.patch
index efaf07d..077d7d1 100644
--- a/debian/patches/features/all/rt/printk-rt-aware.patch
+++ b/debian/patches/features/all/rt/printk-rt-aware.patch
@@ -1,7 +1,7 @@
Subject: printk: Make rt aware
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 19 Sep 2012 14:50:37 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Drop the lock before calling the console driver and do not disable
interrupts while printing to a serial console.
diff --git a/debian/patches/features/all/rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch b/debian/patches/features/all/rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch
index 7a6ae7d..58b87d8 100644
--- a/debian/patches/features/all/rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch
+++ b/debian/patches/features/all/rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 29 Aug 2013 18:21:04 +0200
Subject: ptrace: fix ptrace vs tasklist_lock race
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
As explained by Alexander Fyodorov <halcy at yandex.ru>:
@@ -42,7 +42,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
#define task_contributes_to_load(task) \
((task->state & TASK_UNINTERRUPTIBLE) != 0 && \
(task->flags & PF_FROZEN) == 0 && \
-@@ -3359,6 +3356,51 @@ static inline int signal_pending_state(l
+@@ -3360,6 +3357,51 @@ static inline int signal_pending_state(l
return (state & TASK_INTERRUPTIBLE) || __fatal_signal_pending(p);
}
@@ -96,7 +96,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
* explicit rescheduling in places that are safe. The return
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
-@@ -130,7 +130,14 @@ static bool ptrace_freeze_traced(struct
+@@ -166,7 +166,14 @@ static bool ptrace_freeze_traced(struct
spin_lock_irq(&task->sighand->siglock);
if (task_is_traced(task) && !__fatal_signal_pending(task)) {
diff --git a/debian/patches/features/all/rt/radix-tree-rt-aware.patch b/debian/patches/features/all/rt/radix-tree-rt-aware.patch
deleted file mode 100644
index a59d05e..0000000
--- a/debian/patches/features/all/rt/radix-tree-rt-aware.patch
+++ /dev/null
@@ -1,80 +0,0 @@
-From: Thomas Gleixner <tglx at linutronix.de>
-Date: Sun, 17 Jul 2011 21:33:18 +0200
-Subject: radix-tree: Make RT aware
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
-
-Disable radix_tree_preload() on -RT. This functions returns with
-preemption disabled which may cause high latencies and breaks if the
-user tries to grab any locks after invoking it.
-
-Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
----
- include/linux/radix-tree.h | 12 +++++++++++-
- lib/radix-tree.c | 5 ++++-
- 2 files changed, 15 insertions(+), 2 deletions(-)
-
---- a/include/linux/radix-tree.h
-+++ b/include/linux/radix-tree.h
-@@ -289,9 +289,19 @@ unsigned int radix_tree_gang_lookup(stru
- unsigned int radix_tree_gang_lookup_slot(struct radix_tree_root *root,
- void ***results, unsigned long *indices,
- unsigned long first_index, unsigned int max_items);
-+#ifdef CONFIG_PREEMPT_RT_FULL
-+static inline int radix_tree_preload(gfp_t gm) { return 0; }
-+static inline int radix_tree_maybe_preload(gfp_t gfp_mask) { return 0; }
-+static inline int radix_tree_maybe_preload_order(gfp_t gfp_mask, int order)
-+{
-+ return 0;
-+};
-+
-+#else
- int radix_tree_preload(gfp_t gfp_mask);
- int radix_tree_maybe_preload(gfp_t gfp_mask);
- int radix_tree_maybe_preload_order(gfp_t gfp_mask, int order);
-+#endif
- void radix_tree_init(void);
- void *radix_tree_tag_set(struct radix_tree_root *root,
- unsigned long index, unsigned int tag);
-@@ -316,7 +326,7 @@ unsigned long radix_tree_locate_item(str
-
- static inline void radix_tree_preload_end(void)
- {
-- preempt_enable();
-+ preempt_enable_nort();
- }
-
- /**
---- a/lib/radix-tree.c
-+++ b/lib/radix-tree.c
-@@ -290,13 +290,14 @@ radix_tree_node_alloc(struct radix_tree_
- * succeed in getting a node here (and never reach
- * kmem_cache_alloc)
- */
-- rtp = this_cpu_ptr(&radix_tree_preloads);
-+ rtp = &get_cpu_var(radix_tree_preloads);
- if (rtp->nr) {
- ret = rtp->nodes;
- rtp->nodes = ret->private_data;
- ret->private_data = NULL;
- rtp->nr--;
- }
-+ put_cpu_var(radix_tree_preloads);
- /*
- * Update the allocation stack trace as this is more useful
- * for debugging.
-@@ -336,6 +337,7 @@ radix_tree_node_free(struct radix_tree_n
- call_rcu(&node->rcu_head, radix_tree_node_rcu_free);
- }
-
-+#ifndef CONFIG_PREEMPT_RT_FULL
- /*
- * Load up this CPU's radix_tree_node buffer with sufficient objects to
- * ensure that the addition of a single element in the tree cannot fail. On
-@@ -455,6 +457,7 @@ int radix_tree_maybe_preload_order(gfp_t
-
- return __radix_tree_preload(gfp_mask, nr_nodes);
- }
-+#endif
-
- /*
- * The maximum index which can be stored in a radix tree
diff --git a/debian/patches/features/all/rt/radix-tree-use-local-locks.patch b/debian/patches/features/all/rt/radix-tree-use-local-locks.patch
new file mode 100644
index 0000000..7300579
--- /dev/null
+++ b/debian/patches/features/all/rt/radix-tree-use-local-locks.patch
@@ -0,0 +1,125 @@
+From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+Date: Wed, 25 Jan 2017 16:34:27 +0100
+Subject: [PATCH] radix-tree: use local locks
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
+
+The preload functionality uses per-CPU variables and preempt-disable to
+ensure that it does not switch CPUs during its usage. This patch adds
+local_locks() instead preempt_disable() for the same purpose and to
+remain preemptible on -RT.
+
+Cc: stable-rt at vger.kernel.org
+Reported-and-debugged-by: Mike Galbraith <efault at gmx.de>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ include/linux/radix-tree.h | 7 ++-----
+ lib/radix-tree.c | 22 +++++++++++++++-------
+ 2 files changed, 17 insertions(+), 12 deletions(-)
+
+--- a/include/linux/radix-tree.h
++++ b/include/linux/radix-tree.h
+@@ -292,6 +292,8 @@ unsigned int radix_tree_gang_lookup_slot
+ int radix_tree_preload(gfp_t gfp_mask);
+ int radix_tree_maybe_preload(gfp_t gfp_mask);
+ int radix_tree_maybe_preload_order(gfp_t gfp_mask, int order);
++void radix_tree_preload_end(void);
++
+ void radix_tree_init(void);
+ void *radix_tree_tag_set(struct radix_tree_root *root,
+ unsigned long index, unsigned int tag);
+@@ -314,11 +316,6 @@ unsigned long radix_tree_range_tag_if_ta
+ int radix_tree_tagged(struct radix_tree_root *root, unsigned int tag);
+ unsigned long radix_tree_locate_item(struct radix_tree_root *root, void *item);
+
+-static inline void radix_tree_preload_end(void)
+-{
+- preempt_enable();
+-}
+-
+ /**
+ * struct radix_tree_iter - radix tree iterator state
+ *
+--- a/lib/radix-tree.c
++++ b/lib/radix-tree.c
+@@ -36,7 +36,7 @@
+ #include <linux/bitops.h>
+ #include <linux/rcupdate.h>
+ #include <linux/preempt.h> /* in_interrupt() */
+-
++#include <linux/locallock.h>
+
+ /* Number of nodes in fully populated tree of given height */
+ static unsigned long height_to_maxnodes[RADIX_TREE_MAX_PATH + 1] __read_mostly;
+@@ -68,6 +68,7 @@ struct radix_tree_preload {
+ struct radix_tree_node *nodes;
+ };
+ static DEFINE_PER_CPU(struct radix_tree_preload, radix_tree_preloads) = { 0, };
++static DEFINE_LOCAL_IRQ_LOCK(radix_tree_preloads_lock);
+
+ static inline void *node_to_entry(void *ptr)
+ {
+@@ -290,13 +291,14 @@ radix_tree_node_alloc(struct radix_tree_
+ * succeed in getting a node here (and never reach
+ * kmem_cache_alloc)
+ */
+- rtp = this_cpu_ptr(&radix_tree_preloads);
++ rtp = &get_locked_var(radix_tree_preloads_lock, radix_tree_preloads);
+ if (rtp->nr) {
+ ret = rtp->nodes;
+ rtp->nodes = ret->private_data;
+ ret->private_data = NULL;
+ rtp->nr--;
+ }
++ put_locked_var(radix_tree_preloads_lock, radix_tree_preloads);
+ /*
+ * Update the allocation stack trace as this is more useful
+ * for debugging.
+@@ -357,14 +359,14 @@ static int __radix_tree_preload(gfp_t gf
+ */
+ gfp_mask &= ~__GFP_ACCOUNT;
+
+- preempt_disable();
++ local_lock(radix_tree_preloads_lock);
+ rtp = this_cpu_ptr(&radix_tree_preloads);
+ while (rtp->nr < nr) {
+- preempt_enable();
++ local_unlock(radix_tree_preloads_lock);
+ node = kmem_cache_alloc(radix_tree_node_cachep, gfp_mask);
+ if (node == NULL)
+ goto out;
+- preempt_disable();
++ local_lock(radix_tree_preloads_lock);
+ rtp = this_cpu_ptr(&radix_tree_preloads);
+ if (rtp->nr < nr) {
+ node->private_data = rtp->nodes;
+@@ -406,7 +408,7 @@ int radix_tree_maybe_preload(gfp_t gfp_m
+ if (gfpflags_allow_blocking(gfp_mask))
+ return __radix_tree_preload(gfp_mask, RADIX_TREE_PRELOAD_SIZE);
+ /* Preloading doesn't help anything with this gfp mask, skip it */
+- preempt_disable();
++ local_lock(radix_tree_preloads_lock);
+ return 0;
+ }
+ EXPORT_SYMBOL(radix_tree_maybe_preload);
+@@ -422,7 +424,7 @@ int radix_tree_maybe_preload_order(gfp_t
+
+ /* Preloading doesn't help anything with this gfp mask, skip it */
+ if (!gfpflags_allow_blocking(gfp_mask)) {
+- preempt_disable();
++ local_lock(radix_tree_preloads_lock);
+ return 0;
+ }
+
+@@ -456,6 +458,12 @@ int radix_tree_maybe_preload_order(gfp_t
+ return __radix_tree_preload(gfp_mask, nr_nodes);
+ }
+
++void radix_tree_preload_end(void)
++{
++ local_unlock(radix_tree_preloads_lock);
++}
++EXPORT_SYMBOL(radix_tree_preload_end);
++
+ /*
+ * The maximum index which can be stored in a radix tree
+ */
diff --git a/debian/patches/features/all/rt/random-make-it-work-on-rt.patch b/debian/patches/features/all/rt/random-make-it-work-on-rt.patch
index 94dec9e..9765892 100644
--- a/debian/patches/features/all/rt/random-make-it-work-on-rt.patch
+++ b/debian/patches/features/all/rt/random-make-it-work-on-rt.patch
@@ -1,7 +1,7 @@
Subject: random: Make it work on rt
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 21 Aug 2012 20:38:50 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Delegate the random insertion to the forced threaded interrupt
handler. Store the return IP of the hard interrupt handler in the irq
diff --git a/debian/patches/features/all/rt/rbtree-include-rcu.h-because-we-use-it.patch b/debian/patches/features/all/rt/rbtree-include-rcu.h-because-we-use-it.patch
index 89487ec..d3553b3 100644
--- a/debian/patches/features/all/rt/rbtree-include-rcu.h-because-we-use-it.patch
+++ b/debian/patches/features/all/rt/rbtree-include-rcu.h-because-we-use-it.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 14 Sep 2016 11:52:17 +0200
Subject: rbtree: include rcu.h because we use it
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Since commit c1adf20052d8 ("Introduce rb_replace_node_rcu()")
rbtree_augmented.h uses RCU related data structures but does not include
diff --git a/debian/patches/features/all/rt/rcu-Eliminate-softirq-processing-from-rcutree.patch b/debian/patches/features/all/rt/rcu-Eliminate-softirq-processing-from-rcutree.patch
index fe8c1e1..386d92c 100644
--- a/debian/patches/features/all/rt/rcu-Eliminate-softirq-processing-from-rcutree.patch
+++ b/debian/patches/features/all/rt/rcu-Eliminate-softirq-processing-from-rcutree.patch
@@ -1,7 +1,7 @@
From: "Paul E. McKenney" <paulmck at linux.vnet.ibm.com>
Date: Mon, 4 Nov 2013 13:21:10 -0800
Subject: rcu: Eliminate softirq processing from rcutree
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Running RCU out of softirq is a problem for some workloads that would
like to manage RCU core processing independently of other softirq work,
@@ -36,7 +36,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
#include "tree.h"
#include "rcu.h"
-@@ -3041,18 +3046,17 @@ static void
+@@ -3044,18 +3049,17 @@ static void
/*
* Do RCU core processing for the current CPU.
*/
@@ -57,7 +57,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
/*
* Schedule RCU callback invocation. If the specified type of RCU
* does not support RCU priority boosting, just do a direct call,
-@@ -3064,18 +3068,105 @@ static void invoke_rcu_callbacks(struct
+@@ -3067,18 +3071,105 @@ static void invoke_rcu_callbacks(struct
{
if (unlikely(!READ_ONCE(rcu_scheduler_fully_active)))
return;
@@ -169,7 +169,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
/*
* Handle any core-RCU processing required by a call_rcu() invocation.
-@@ -4261,7 +4352,6 @@ void __init rcu_init(void)
+@@ -4268,7 +4359,6 @@ void __init rcu_init(void)
if (dump_tree)
rcu_dump_rcu_node_tree(&rcu_sched_state);
__rcu_init_preempt();
diff --git a/debian/patches/features/all/rt/rcu-disable-rcu-fast-no-hz-on-rt.patch b/debian/patches/features/all/rt/rcu-disable-rcu-fast-no-hz-on-rt.patch
index 338dce6..0e9c842 100644
--- a/debian/patches/features/all/rt/rcu-disable-rcu-fast-no-hz-on-rt.patch
+++ b/debian/patches/features/all/rt/rcu-disable-rcu-fast-no-hz-on-rt.patch
@@ -1,7 +1,7 @@
Subject: rcu: Disable RCU_FAST_NO_HZ on RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 28 Oct 2012 13:26:09 +0000
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
This uses a timer_list timer from the irq disabled guts of the idle
code. Disable it for now to prevent wreckage.
diff --git a/debian/patches/features/all/rt/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch b/debian/patches/features/all/rt/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch
index 7bdf664..b7a9981 100644
--- a/debian/patches/features/all/rt/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch
+++ b/debian/patches/features/all/rt/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch
@@ -1,7 +1,7 @@
From: Julia Cartwright <julia at ni.com>
Date: Wed, 12 Oct 2016 11:21:14 -0500
Subject: [PATCH] rcu: enable rcu_normal_after_boot by default for RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The forcing of an expedited grace period is an expensive and very
RT-application unfriendly operation, as it forcibly preempts all running
diff --git a/debian/patches/features/all/rt/rcu-make-RCU_BOOST-default-on-RT.patch b/debian/patches/features/all/rt/rcu-make-RCU_BOOST-default-on-RT.patch
index eb39256..24b7039 100644
--- a/debian/patches/features/all/rt/rcu-make-RCU_BOOST-default-on-RT.patch
+++ b/debian/patches/features/all/rt/rcu-make-RCU_BOOST-default-on-RT.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 21 Mar 2014 20:19:05 +0100
Subject: rcu: make RCU_BOOST default on RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Since it is no longer invoked from the softirq people run into OOM more
often if the priority of the RCU thread is too low. Making boosting
diff --git a/debian/patches/features/all/rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch b/debian/patches/features/all/rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch
index 2aea56b..0e764e6 100644
--- a/debian/patches/features/all/rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch
+++ b/debian/patches/features/all/rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch
@@ -1,7 +1,7 @@
Subject: rcu: Merge RCU-bh into RCU-preempt
Date: Wed, 5 Oct 2011 11:59:38 -0700
From: Thomas Gleixner <tglx at linutronix.de>
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The Linux kernel has long RCU-bh read-side critical sections that
intolerably increase scheduling latency under mainline's RCU-bh rules,
@@ -65,7 +65,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
void rcu_check_callbacks(int user);
void rcu_report_dead(unsigned int cpu);
void rcu_cpu_starting(unsigned int cpu);
-@@ -509,7 +517,14 @@ extern struct lockdep_map rcu_callback_m
+@@ -513,7 +521,14 @@ extern struct lockdep_map rcu_callback_m
int debug_lockdep_rcu_enabled(void);
int rcu_read_lock_held(void);
@@ -80,7 +80,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/**
* rcu_read_lock_sched_held() - might we be in RCU-sched read-side critical section?
-@@ -907,10 +922,14 @@ static inline void rcu_read_unlock(void)
+@@ -911,10 +926,14 @@ static inline void rcu_read_unlock(void)
static inline void rcu_read_lock_bh(void)
{
local_bh_disable();
@@ -95,7 +95,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
/*
-@@ -920,10 +939,14 @@ static inline void rcu_read_lock_bh(void
+@@ -924,10 +943,14 @@ static inline void rcu_read_lock_bh(void
*/
static inline void rcu_read_unlock_bh(void)
{
@@ -196,7 +196,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
* The names includes "busted", and they really means it!
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
-@@ -257,6 +257,7 @@ void rcu_sched_qs(void)
+@@ -260,6 +260,7 @@ void rcu_sched_qs(void)
this_cpu_ptr(&rcu_sched_data), true);
}
@@ -204,7 +204,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
void rcu_bh_qs(void)
{
if (__this_cpu_read(rcu_bh_data.cpu_no_qs.s)) {
-@@ -266,6 +267,7 @@ void rcu_bh_qs(void)
+@@ -269,6 +270,7 @@ void rcu_bh_qs(void)
__this_cpu_write(rcu_bh_data.cpu_no_qs.b.norm, false);
}
}
@@ -212,7 +212,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
static DEFINE_PER_CPU(int, rcu_sched_qs_mask);
-@@ -446,11 +448,13 @@ EXPORT_SYMBOL_GPL(rcu_batches_started_sc
+@@ -449,11 +451,13 @@ EXPORT_SYMBOL_GPL(rcu_batches_started_sc
/*
* Return the number of RCU BH batches started thus far for debug & stats.
*/
@@ -226,7 +226,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/*
* Return the number of RCU batches completed thus far for debug & stats.
-@@ -470,6 +474,7 @@ unsigned long rcu_batches_completed_sche
+@@ -473,6 +477,7 @@ unsigned long rcu_batches_completed_sche
}
EXPORT_SYMBOL_GPL(rcu_batches_completed_sched);
@@ -234,7 +234,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/*
* Return the number of RCU BH batches completed thus far for debug & stats.
*/
-@@ -478,6 +483,7 @@ unsigned long rcu_batches_completed_bh(v
+@@ -481,6 +486,7 @@ unsigned long rcu_batches_completed_bh(v
return rcu_bh_state.completed;
}
EXPORT_SYMBOL_GPL(rcu_batches_completed_bh);
@@ -242,7 +242,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/*
* Return the number of RCU expedited batches completed thus far for
-@@ -501,6 +507,7 @@ unsigned long rcu_exp_batches_completed_
+@@ -504,6 +510,7 @@ unsigned long rcu_exp_batches_completed_
}
EXPORT_SYMBOL_GPL(rcu_exp_batches_completed_sched);
@@ -250,7 +250,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/*
* Force a quiescent state.
*/
-@@ -519,6 +526,13 @@ void rcu_bh_force_quiescent_state(void)
+@@ -522,6 +529,13 @@ void rcu_bh_force_quiescent_state(void)
}
EXPORT_SYMBOL_GPL(rcu_bh_force_quiescent_state);
@@ -264,7 +264,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/*
* Force a quiescent state for RCU-sched.
*/
-@@ -569,9 +583,11 @@ void rcutorture_get_gp_data(enum rcutort
+@@ -572,9 +586,11 @@ void rcutorture_get_gp_data(enum rcutort
case RCU_FLAVOR:
rsp = rcu_state_p;
break;
@@ -276,7 +276,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
case RCU_SCHED_FLAVOR:
rsp = &rcu_sched_state;
break;
-@@ -3192,6 +3208,7 @@ void call_rcu_sched(struct rcu_head *hea
+@@ -3195,6 +3211,7 @@ void call_rcu_sched(struct rcu_head *hea
}
EXPORT_SYMBOL_GPL(call_rcu_sched);
@@ -284,7 +284,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/*
* Queue an RCU callback for invocation after a quicker grace period.
*/
-@@ -3200,6 +3217,7 @@ void call_rcu_bh(struct rcu_head *head,
+@@ -3203,6 +3220,7 @@ void call_rcu_bh(struct rcu_head *head,
__call_rcu(head, func, &rcu_bh_state, -1, 0);
}
EXPORT_SYMBOL_GPL(call_rcu_bh);
@@ -292,7 +292,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/*
* Queue an RCU callback for lazy invocation after a grace period.
-@@ -3291,6 +3309,7 @@ void synchronize_sched(void)
+@@ -3294,6 +3312,7 @@ void synchronize_sched(void)
}
EXPORT_SYMBOL_GPL(synchronize_sched);
@@ -300,7 +300,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/**
* synchronize_rcu_bh - wait until an rcu_bh grace period has elapsed.
*
-@@ -3317,6 +3336,7 @@ void synchronize_rcu_bh(void)
+@@ -3320,6 +3339,7 @@ void synchronize_rcu_bh(void)
wait_rcu_gp(call_rcu_bh);
}
EXPORT_SYMBOL_GPL(synchronize_rcu_bh);
@@ -308,7 +308,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/**
* get_state_synchronize_rcu - Snapshot current RCU state
-@@ -3695,6 +3715,7 @@ static void _rcu_barrier(struct rcu_stat
+@@ -3698,6 +3718,7 @@ static void _rcu_barrier(struct rcu_stat
mutex_unlock(&rsp->barrier_mutex);
}
@@ -316,7 +316,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/**
* rcu_barrier_bh - Wait until all in-flight call_rcu_bh() callbacks complete.
*/
-@@ -3703,6 +3724,7 @@ void rcu_barrier_bh(void)
+@@ -3706,6 +3727,7 @@ void rcu_barrier_bh(void)
_rcu_barrier(&rcu_bh_state);
}
EXPORT_SYMBOL_GPL(rcu_barrier_bh);
@@ -324,7 +324,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/**
* rcu_barrier_sched - Wait for in-flight call_rcu_sched() callbacks.
-@@ -4220,7 +4242,9 @@ void __init rcu_init(void)
+@@ -4227,7 +4249,9 @@ void __init rcu_init(void)
rcu_bootup_announce();
rcu_init_geometry();
@@ -348,7 +348,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
extern struct rcu_state rcu_preempt_state;
--- a/kernel/rcu/update.c
+++ b/kernel/rcu/update.c
-@@ -292,6 +292,7 @@ int rcu_read_lock_held(void)
+@@ -296,6 +296,7 @@ int rcu_read_lock_held(void)
}
EXPORT_SYMBOL_GPL(rcu_read_lock_held);
@@ -356,7 +356,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/**
* rcu_read_lock_bh_held() - might we be in RCU-bh read-side critical section?
*
-@@ -318,6 +319,7 @@ int rcu_read_lock_bh_held(void)
+@@ -322,6 +323,7 @@ int rcu_read_lock_bh_held(void)
return in_softirq() || irqs_disabled();
}
EXPORT_SYMBOL_GPL(rcu_read_lock_bh_held);
diff --git a/debian/patches/features/all/rt/rcu-update-make-RCU_EXPEDITE_BOOT-default.patch b/debian/patches/features/all/rt/rcu-update-make-RCU_EXPEDITE_BOOT-default.patch
index 6af6490..cddc35c 100644
--- a/debian/patches/features/all/rt/rcu-update-make-RCU_EXPEDITE_BOOT-default.patch
+++ b/debian/patches/features/all/rt/rcu-update-make-RCU_EXPEDITE_BOOT-default.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 2 Nov 2016 16:45:58 +0100
Subject: [PATCH] rcu: update: make RCU_EXPEDITE_BOOT default
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
RCU_EXPEDITE_BOOT should speed up the boot process by enforcing
synchronize_rcu_expedited() instead of synchronize_rcu() during the boot
@@ -39,7 +39,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
config BUILD_BIN2C
--- a/kernel/rcu/update.c
+++ b/kernel/rcu/update.c
-@@ -129,8 +129,7 @@ bool rcu_gp_is_normal(void)
+@@ -132,8 +132,7 @@ bool rcu_gp_is_normal(void)
}
EXPORT_SYMBOL_GPL(rcu_gp_is_normal);
@@ -49,7 +49,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
/*
* Should normal grace-period primitives be expedited? Intended for
-@@ -178,8 +177,7 @@ EXPORT_SYMBOL_GPL(rcu_unexpedite_gp);
+@@ -182,8 +181,7 @@ EXPORT_SYMBOL_GPL(rcu_unexpedite_gp);
*/
void rcu_end_inkernel_boot(void)
{
diff --git a/debian/patches/features/all/rt/rcutree-rcu_bh_qs-disable-irq-while-calling-rcu_pree.patch b/debian/patches/features/all/rt/rcutree-rcu_bh_qs-disable-irq-while-calling-rcu_pree.patch
index 7cd0d73..e86fc7d 100644
--- a/debian/patches/features/all/rt/rcutree-rcu_bh_qs-disable-irq-while-calling-rcu_pree.patch
+++ b/debian/patches/features/all/rt/rcutree-rcu_bh_qs-disable-irq-while-calling-rcu_pree.patch
@@ -1,7 +1,7 @@
From: Tiejun Chen <tiejun.chen at windriver.com>
Date: Wed, 18 Dec 2013 17:51:49 +0800
Subject: rcutree/rcu_bh_qs: Disable irq while calling rcu_preempt_qs()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Any callers to the function rcu_preempt_qs() must disable irqs in
order to protect the assignment to ->rcu_read_unlock_special. In
@@ -34,7 +34,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
-@@ -262,7 +262,12 @@ static void rcu_preempt_qs(void);
+@@ -265,7 +265,12 @@ static void rcu_preempt_qs(void);
void rcu_bh_qs(void)
{
diff --git a/debian/patches/features/all/rt/re-migrate_disable-race-with-cpu-hotplug-3f.patch b/debian/patches/features/all/rt/re-migrate_disable-race-with-cpu-hotplug-3f.patch
index 23b4ae0..ff6e758 100644
--- a/debian/patches/features/all/rt/re-migrate_disable-race-with-cpu-hotplug-3f.patch
+++ b/debian/patches/features/all/rt/re-migrate_disable-race-with-cpu-hotplug-3f.patch
@@ -1,7 +1,7 @@
From: Yong Zhang <yong.zhang0 at gmail.com>
Date: Thu, 28 Jul 2011 11:16:00 +0800
Subject: hotplug: Reread hotplug_pcp on pin_current_cpu() retry
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
When retry happens, it's likely that the task has been migrated to
another cpu (except unplug failed), but it still derefernces the
diff --git a/debian/patches/features/all/rt/re-preempt_rt_full-arm-coredump-fails-for-cpu-3e-3d-4.patch b/debian/patches/features/all/rt/re-preempt_rt_full-arm-coredump-fails-for-cpu-3e-3d-4.patch
index e0e1f99..f71ec72 100644
--- a/debian/patches/features/all/rt/re-preempt_rt_full-arm-coredump-fails-for-cpu-3e-3d-4.patch
+++ b/debian/patches/features/all/rt/re-preempt_rt_full-arm-coredump-fails-for-cpu-3e-3d-4.patch
@@ -1,7 +1,7 @@
Subject: ARM: Initialize split page table locks for vector page
From: Frank Rowand <frank.rowand at am.sony.com>
Date: Sat, 1 Oct 2011 18:58:13 -0700
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Without this patch, ARM can not use SPLIT_PTLOCK_CPUS if
PREEMPT_RT_FULL=y because vectors_user_mapping() creates a
diff --git a/debian/patches/features/all/rt/rfc-arm-smp-__cpu_disable-fix-sleeping-function-called-from-invalid-context.patch b/debian/patches/features/all/rt/rfc-arm-smp-__cpu_disable-fix-sleeping-function-called-from-invalid-context.patch
index 6aaa144..b0c40ea 100644
--- a/debian/patches/features/all/rt/rfc-arm-smp-__cpu_disable-fix-sleeping-function-called-from-invalid-context.patch
+++ b/debian/patches/features/all/rt/rfc-arm-smp-__cpu_disable-fix-sleeping-function-called-from-invalid-context.patch
@@ -1,7 +1,7 @@
Subject: ARM: smp: Move clear_tasks_mm_cpumask() call to __cpu_die()
From: Grygorii Strashko <grygorii.strashko at ti.com>
Date: Fri, 11 Sep 2015 21:21:23 +0300
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
When running with the RT-kernel (4.1.5-rt5) on TI OMAP dra7-evm and trying
to do Suspend to RAM, the following backtrace occurs:
diff --git a/debian/patches/features/all/rt/rt-add-rt-locks.patch b/debian/patches/features/all/rt/rt-add-rt-locks.patch
index 4486347..18c757a 100644
--- a/debian/patches/features/all/rt/rt-add-rt-locks.patch
+++ b/debian/patches/features/all/rt/rt-add-rt-locks.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 26 Jul 2009 19:39:56 +0200
Subject: rt: Add the preempt-rt lock replacement APIs
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Map spinlocks, rwlocks, rw_semaphores and semaphores to the rt_mutex
based locking functions for preempt-rt.
diff --git a/debian/patches/features/all/rt/rt-introduce-cpu-chill.patch b/debian/patches/features/all/rt/rt-introduce-cpu-chill.patch
index 5cc0514..4e44967 100644
--- a/debian/patches/features/all/rt/rt-introduce-cpu-chill.patch
+++ b/debian/patches/features/all/rt/rt-introduce-cpu-chill.patch
@@ -1,7 +1,7 @@
Subject: rt: Introduce cpu_chill()
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 07 Mar 2012 20:51:03 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Retry loops on RT might loop forever when the modifying side was
preempted. Add cpu_chill() to replace cpu_relax(). cpu_chill()
diff --git a/debian/patches/features/all/rt/rt-local-irq-lock.patch b/debian/patches/features/all/rt/rt-local-irq-lock.patch
index d7c43bf..928bcfa 100644
--- a/debian/patches/features/all/rt/rt-local-irq-lock.patch
+++ b/debian/patches/features/all/rt/rt-local-irq-lock.patch
@@ -1,7 +1,7 @@
Subject: rt: Add local irq locks
From: Thomas Gleixner <tglx at linutronix.de>
Date: Mon, 20 Jun 2011 09:03:47 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Introduce locallock. For !RT this maps to preempt_disable()/
local_irq_disable() so there is not much that changes. For RT this will
diff --git a/debian/patches/features/all/rt/rt-locking-Reenable-migration-accross-schedule.patch b/debian/patches/features/all/rt/rt-locking-Reenable-migration-accross-schedule.patch
index b22752c..8ab7fe5 100644
--- a/debian/patches/features/all/rt/rt-locking-Reenable-migration-accross-schedule.patch
+++ b/debian/patches/features/all/rt/rt-locking-Reenable-migration-accross-schedule.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Mon, 8 Feb 2016 16:15:28 +0100
Subject: rt/locking: Reenable migration accross schedule
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
We currently disable migration across lock acquisition. That includes the part
where we block on the lock and schedule out. We cannot disable migration after
diff --git a/debian/patches/features/all/rt/rt-preempt-base-config.patch b/debian/patches/features/all/rt/rt-preempt-base-config.patch
index 768d7ee..fc0f076 100644
--- a/debian/patches/features/all/rt/rt-preempt-base-config.patch
+++ b/debian/patches/features/all/rt/rt-preempt-base-config.patch
@@ -1,7 +1,7 @@
Subject: rt: Provide PREEMPT_RT_BASE config switch
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 17 Jun 2011 12:39:57 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Introduce PREEMPT_RT_BASE which enables parts of
PREEMPT_RT_FULL. Forces interrupt threading and enables some of the RT
diff --git a/debian/patches/features/all/rt/rt-serial-warn-fix.patch b/debian/patches/features/all/rt/rt-serial-warn-fix.patch
index eed663a..0ee29a3 100644
--- a/debian/patches/features/all/rt/rt-serial-warn-fix.patch
+++ b/debian/patches/features/all/rt/rt-serial-warn-fix.patch
@@ -1,7 +1,7 @@
Subject: rt: Improve the serial console PASS_LIMIT
From: Ingo Molnar <mingo at elte.hu>
Date: Wed Dec 14 13:05:54 CET 2011
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Beyond the warning:
diff --git a/debian/patches/features/all/rt/rtmutex--Handle-non-enqueued-waiters-gracefully.patch b/debian/patches/features/all/rt/rtmutex--Handle-non-enqueued-waiters-gracefully.patch
index 2a62e8a..f8718b7 100644
--- a/debian/patches/features/all/rt/rtmutex--Handle-non-enqueued-waiters-gracefully.patch
+++ b/debian/patches/features/all/rt/rtmutex--Handle-non-enqueued-waiters-gracefully.patch
@@ -1,7 +1,7 @@
Subject: rtmutex: Handle non enqueued waiters gracefully
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 06 Nov 2015 18:51:03 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Yimin debugged that in case of a PI wakeup in progress when
rt_mutex_start_proxy_lock() calls task_blocks_on_rt_mutex() the latter
diff --git a/debian/patches/features/all/rt/rtmutex-add-a-first-shot-of-ww_mutex.patch b/debian/patches/features/all/rt/rtmutex-add-a-first-shot-of-ww_mutex.patch
index a336422..7d09c0c 100644
--- a/debian/patches/features/all/rt/rtmutex-add-a-first-shot-of-ww_mutex.patch
+++ b/debian/patches/features/all/rt/rtmutex-add-a-first-shot-of-ww_mutex.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <sebastian at breakpoint.cc>
Date: Mon, 28 Oct 2013 09:36:37 +0100
Subject: rtmutex: Add RT aware ww locks
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
lockdep says:
| --------------------------------------------------------------------------
diff --git a/debian/patches/features/all/rt/rtmutex-avoid-include-hell.patch b/debian/patches/features/all/rt/rtmutex-avoid-include-hell.patch
index 4a8107d..bd541e5 100644
--- a/debian/patches/features/all/rt/rtmutex-avoid-include-hell.patch
+++ b/debian/patches/features/all/rt/rtmutex-avoid-include-hell.patch
@@ -1,7 +1,7 @@
Subject: rtmutex: Avoid include hell
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 29 Jun 2011 20:06:39 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Include only the required raw types. This avoids pulling in the
complete spinlock header which in turn requires rtmutex.h at some point.
diff --git a/debian/patches/features/all/rt/rtmutex-futex-prepare-rt.patch b/debian/patches/features/all/rt/rtmutex-futex-prepare-rt.patch
index 4bd0618..a54b78e 100644
--- a/debian/patches/features/all/rt/rtmutex-futex-prepare-rt.patch
+++ b/debian/patches/features/all/rt/rtmutex-futex-prepare-rt.patch
@@ -1,7 +1,7 @@
Subject: rtmutex: Handle the various new futex race conditions
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 10 Jun 2011 11:04:15 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
RT opens a few new interesting race conditions in the rtmutex/futex
combo due to futex hash bucket lock being a 'sleeping' spinlock and
diff --git a/debian/patches/features/all/rt/rtmutex-lock-killable.patch b/debian/patches/features/all/rt/rtmutex-lock-killable.patch
index 344fe77..b9aeed8 100644
--- a/debian/patches/features/all/rt/rtmutex-lock-killable.patch
+++ b/debian/patches/features/all/rt/rtmutex-lock-killable.patch
@@ -1,7 +1,7 @@
Subject: rtmutex: Add rtmutex_lock_killable()
From: Thomas Gleixner <tglx at linutronix.de>
Date: Thu, 09 Jun 2011 11:43:52 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Add "killable" type to rtmutex. We need this since rtmutex are used as
"normal" mutexes which do use this type.
diff --git a/debian/patches/features/all/rt/rtmutex-trylock-is-okay-on-RT.patch b/debian/patches/features/all/rt/rtmutex-trylock-is-okay-on-RT.patch
index 3a84bb0..1615d3b 100644
--- a/debian/patches/features/all/rt/rtmutex-trylock-is-okay-on-RT.patch
+++ b/debian/patches/features/all/rt/rtmutex-trylock-is-okay-on-RT.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed 02 Dec 2015 11:34:07 +0100
Subject: rtmutex: trylock is okay on -RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
non-RT kernel could deadlock on rt_mutex_trylock() in softirq context. On
-RT we don't run softirqs in IRQ context but in thread context so it is
diff --git a/debian/patches/features/all/rt/rtmutex_dont_include_rcu.patch b/debian/patches/features/all/rt/rtmutex_dont_include_rcu.patch
index fe597cb..57e5b32 100644
--- a/debian/patches/features/all/rt/rtmutex_dont_include_rcu.patch
+++ b/debian/patches/features/all/rt/rtmutex_dont_include_rcu.patch
@@ -1,6 +1,6 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Subject: rbtree: don't include the rcu header
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The RCU header pulls in spinlock.h and fails due not yet defined types:
@@ -102,7 +102,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
#include <asm/barrier.h>
-@@ -629,54 +630,6 @@ static inline void rcu_preempt_sleep_che
+@@ -633,54 +634,6 @@ static inline void rcu_preempt_sleep_che
})
/**
diff --git a/debian/patches/features/all/rt/rxrpc-remove-unused-static-variables.patch b/debian/patches/features/all/rt/rxrpc-remove-unused-static-variables.patch
index f0e04f3..88353b0 100644
--- a/debian/patches/features/all/rt/rxrpc-remove-unused-static-variables.patch
+++ b/debian/patches/features/all/rt/rxrpc-remove-unused-static-variables.patch
@@ -2,7 +2,7 @@ From f9cf73e8bad7daa90318edfd933f8676cd1e5cd4 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 21 Oct 2016 10:54:50 +0200
Subject: [PATCH] rxrpc: remove unused static variables
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The rxrpc_security_methods and rxrpc_security_sem user has been removed
in 648af7fca159 ("rxrpc: Absorb the rxkad security module"). This was
diff --git a/debian/patches/features/all/rt/sas-ata-isci-dont-t-disable-interrupts-in-qc_issue-h.patch b/debian/patches/features/all/rt/sas-ata-isci-dont-t-disable-interrupts-in-qc_issue-h.patch
index 191ec5f..6bd110a 100644
--- a/debian/patches/features/all/rt/sas-ata-isci-dont-t-disable-interrupts-in-qc_issue-h.patch
+++ b/debian/patches/features/all/rt/sas-ata-isci-dont-t-disable-interrupts-in-qc_issue-h.patch
@@ -1,7 +1,7 @@
From: Paul Gortmaker <paul.gortmaker at windriver.com>
Date: Sat, 14 Feb 2015 11:01:16 -0500
Subject: sas-ata/isci: dont't disable interrupts in qc_issue handler
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
On 3.14-rt we see the following trace on Canoe Pass for
SCSI_ISCI "Intel(R) C600 Series Chipset SAS Controller"
diff --git a/debian/patches/features/all/rt/sched-deadline-dl_task_timer-has-to-be-irqsafe.patch b/debian/patches/features/all/rt/sched-deadline-dl_task_timer-has-to-be-irqsafe.patch
index abcd3c9..e347d7c 100644
--- a/debian/patches/features/all/rt/sched-deadline-dl_task_timer-has-to-be-irqsafe.patch
+++ b/debian/patches/features/all/rt/sched-deadline-dl_task_timer-has-to-be-irqsafe.patch
@@ -1,7 +1,7 @@
From: Juri Lelli <juri.lelli at gmail.com>
Date: Tue, 13 May 2014 15:30:20 +0200
Subject: sched/deadline: dl_task_timer has to be irqsafe
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
As for rt_period_timer, dl_task_timer has to be irqsafe.
diff --git a/debian/patches/features/all/rt/sched-delay-put-task.patch b/debian/patches/features/all/rt/sched-delay-put-task.patch
index 0a64db3..0f3e8d7 100644
--- a/debian/patches/features/all/rt/sched-delay-put-task.patch
+++ b/debian/patches/features/all/rt/sched-delay-put-task.patch
@@ -1,7 +1,7 @@
Subject: sched: Move task_struct cleanup to RCU
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 31 May 2011 16:59:16 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
__put_task_struct() does quite some expensive work. We don't want to
burden random tasks with that.
@@ -14,7 +14,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
-@@ -1961,6 +1961,9 @@ struct task_struct {
+@@ -1962,6 +1962,9 @@ struct task_struct {
unsigned int sequential_io;
unsigned int sequential_io_avg;
#endif
@@ -24,7 +24,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
#ifdef CONFIG_DEBUG_ATOMIC_SLEEP
unsigned long task_state_change;
#endif
-@@ -2218,6 +2221,15 @@ extern struct pid *cad_pid;
+@@ -2219,6 +2222,15 @@ extern struct pid *cad_pid;
extern void free_task(struct task_struct *tsk);
#define get_task_struct(tsk) do { atomic_inc(&(tsk)->usage); } while(0)
@@ -40,7 +40,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
extern void __put_task_struct(struct task_struct *t);
static inline void put_task_struct(struct task_struct *t)
-@@ -2225,6 +2237,7 @@ static inline void put_task_struct(struc
+@@ -2226,6 +2238,7 @@ static inline void put_task_struct(struc
if (atomic_dec_and_test(&t->usage))
__put_task_struct(t);
}
diff --git a/debian/patches/features/all/rt/sched-disable-rt-group-sched-on-rt.patch b/debian/patches/features/all/rt/sched-disable-rt-group-sched-on-rt.patch
index e916980..0258fae 100644
--- a/debian/patches/features/all/rt/sched-disable-rt-group-sched-on-rt.patch
+++ b/debian/patches/features/all/rt/sched-disable-rt-group-sched-on-rt.patch
@@ -1,7 +1,7 @@
Subject: sched: Disable CONFIG_RT_GROUP_SCHED on RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Mon, 18 Jul 2011 17:03:52 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Carsten reported problems when running:
diff --git a/debian/patches/features/all/rt/sched-disable-ttwu-queue.patch b/debian/patches/features/all/rt/sched-disable-ttwu-queue.patch
index 2f0930d..85278ae 100644
--- a/debian/patches/features/all/rt/sched-disable-ttwu-queue.patch
+++ b/debian/patches/features/all/rt/sched-disable-ttwu-queue.patch
@@ -1,7 +1,7 @@
Subject: sched: Disable TTWU_QUEUE on RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 13 Sep 2011 16:42:35 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The queued remote wakeup mechanism can introduce rather large
latencies if the number of migrated tasks is high. Disable it for RT.
diff --git a/debian/patches/features/all/rt/sched-limit-nr-migrate.patch b/debian/patches/features/all/rt/sched-limit-nr-migrate.patch
index 58bc677..8a50994 100644
--- a/debian/patches/features/all/rt/sched-limit-nr-migrate.patch
+++ b/debian/patches/features/all/rt/sched-limit-nr-migrate.patch
@@ -1,7 +1,7 @@
Subject: sched: Limit the number of task migrations per batch
From: Thomas Gleixner <tglx at linutronix.de>
Date: Mon, 06 Jun 2011 12:12:51 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Put an upper limit on the number of tasks which are migrated per batch
to avoid large latencies.
diff --git a/debian/patches/features/all/rt/sched-might-sleep-do-not-account-rcu-depth.patch b/debian/patches/features/all/rt/sched-might-sleep-do-not-account-rcu-depth.patch
index 031dc9b..1ecfafe 100644
--- a/debian/patches/features/all/rt/sched-might-sleep-do-not-account-rcu-depth.patch
+++ b/debian/patches/features/all/rt/sched-might-sleep-do-not-account-rcu-depth.patch
@@ -1,7 +1,7 @@
Subject: sched: Do not account rcu_preempt_depth on RT in might_sleep()
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 07 Jun 2011 09:19:06 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
RT changes the rcu_preempt_depth semantics, so we cannot check for it
in might_sleep().
diff --git a/debian/patches/features/all/rt/sched-mmdrop-delayed.patch b/debian/patches/features/all/rt/sched-mmdrop-delayed.patch
index 3ba394d..91f36a5 100644
--- a/debian/patches/features/all/rt/sched-mmdrop-delayed.patch
+++ b/debian/patches/features/all/rt/sched-mmdrop-delayed.patch
@@ -1,7 +1,7 @@
Subject: sched: Move mmdrop to RCU on RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Mon, 06 Jun 2011 12:20:33 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Takes sleeping locks and calls into the memory allocator, so nothing
we want to do in task switch and oder atomic contexts.
@@ -24,7 +24,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
#include <linux/page-flags-layout.h>
#include <linux/workqueue.h>
#include <asm/page.h>
-@@ -508,6 +509,9 @@ struct mm_struct {
+@@ -509,6 +510,9 @@ struct mm_struct {
bool tlb_flush_pending;
#endif
struct uprobes_state uprobes_state;
@@ -36,7 +36,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
void __user *bd_addr;
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
-@@ -2905,6 +2905,17 @@ static inline void mmdrop(struct mm_stru
+@@ -2906,6 +2906,17 @@ static inline void mmdrop(struct mm_stru
__mmdrop(mm);
}
@@ -56,7 +56,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
struct mm_struct *mm = container_of(work, struct mm_struct, async_put_work);
--- a/kernel/fork.c
+++ b/kernel/fork.c
-@@ -862,6 +862,19 @@ void __mmdrop(struct mm_struct *mm)
+@@ -865,6 +865,19 @@ void __mmdrop(struct mm_struct *mm)
}
EXPORT_SYMBOL_GPL(__mmdrop);
diff --git a/debian/patches/features/all/rt/sched-rt-mutex-wakeup.patch b/debian/patches/features/all/rt/sched-rt-mutex-wakeup.patch
index 1895e72..54eec71 100644
--- a/debian/patches/features/all/rt/sched-rt-mutex-wakeup.patch
+++ b/debian/patches/features/all/rt/sched-rt-mutex-wakeup.patch
@@ -1,7 +1,7 @@
Subject: sched: Add saved_state for tasks blocked on sleeping locks
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sat, 25 Jun 2011 09:21:04 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Spinlocks are state preserving in !RT. RT changes the state when a
task gets blocked on a lock. So we need to remember the state before
@@ -26,7 +26,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
void *stack;
atomic_t usage;
unsigned int flags; /* per process flags, defined below */
-@@ -2697,6 +2698,7 @@ extern void xtime_update(unsigned long t
+@@ -2698,6 +2699,7 @@ extern void xtime_update(unsigned long t
extern int wake_up_state(struct task_struct *tsk, unsigned int state);
extern int wake_up_process(struct task_struct *tsk);
diff --git a/debian/patches/features/all/rt/sched-ttwu-ensure-success-return-is-correct.patch b/debian/patches/features/all/rt/sched-ttwu-ensure-success-return-is-correct.patch
index 8a92d20..e5fab61 100644
--- a/debian/patches/features/all/rt/sched-ttwu-ensure-success-return-is-correct.patch
+++ b/debian/patches/features/all/rt/sched-ttwu-ensure-success-return-is-correct.patch
@@ -1,7 +1,7 @@
Subject: sched: ttwu: Return success when only changing the saved_state value
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 13 Dec 2011 21:42:19 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
When a task blocks on a rt lock, it saves the current state in
p->saved_state, so a lock related wake up will not destroy the
diff --git a/debian/patches/features/all/rt/sched-workqueue-Only-wake-up-idle-workers-if-not-blo.patch b/debian/patches/features/all/rt/sched-workqueue-Only-wake-up-idle-workers-if-not-blo.patch
index 70de762..3d84eed 100644
--- a/debian/patches/features/all/rt/sched-workqueue-Only-wake-up-idle-workers-if-not-blo.patch
+++ b/debian/patches/features/all/rt/sched-workqueue-Only-wake-up-idle-workers-if-not-blo.patch
@@ -1,7 +1,7 @@
From: Steven Rostedt <rostedt at goodmis.org>
Date: Mon, 18 Mar 2013 15:12:49 -0400
Subject: sched/workqueue: Only wake up idle workers if not blocked on sleeping spin lock
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
In -rt, most spin_locks() turn into mutexes. One of these spin_lock
conversions is performed on the workqueue gcwq->lock. When the idle
diff --git a/debian/patches/features/all/rt/scsi-fcoe-rt-aware.patch b/debian/patches/features/all/rt/scsi-fcoe-rt-aware.patch
index 2da7e59..a6fbf08 100644
--- a/debian/patches/features/all/rt/scsi-fcoe-rt-aware.patch
+++ b/debian/patches/features/all/rt/scsi-fcoe-rt-aware.patch
@@ -1,7 +1,7 @@
Subject: scsi/fcoe: Make RT aware.
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sat, 12 Nov 2011 14:00:48 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Do not disable preemption while taking sleeping locks. All user look safe
for migrate_diable() only.
diff --git a/debian/patches/features/all/rt/scsi-qla2xxx-fix-bug-sleeping-function-called-from-invalid-context.patch b/debian/patches/features/all/rt/scsi-qla2xxx-fix-bug-sleeping-function-called-from-invalid-context.patch
index ca8570b..4f5cc1b 100644
--- a/debian/patches/features/all/rt/scsi-qla2xxx-fix-bug-sleeping-function-called-from-invalid-context.patch
+++ b/debian/patches/features/all/rt/scsi-qla2xxx-fix-bug-sleeping-function-called-from-invalid-context.patch
@@ -1,7 +1,7 @@
Subject: scsi: qla2xxx: Use local_irq_save_nort() in qla2x00_poll
From: John Kacur <jkacur at redhat.com>
Date: Fri, 27 Apr 2012 12:48:46 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
RT triggers the following:
diff --git a/debian/patches/features/all/rt/seqlock-prevent-rt-starvation.patch b/debian/patches/features/all/rt/seqlock-prevent-rt-starvation.patch
index 93d916f..fd150ac 100644
--- a/debian/patches/features/all/rt/seqlock-prevent-rt-starvation.patch
+++ b/debian/patches/features/all/rt/seqlock-prevent-rt-starvation.patch
@@ -1,7 +1,7 @@
Subject: seqlock: Prevent rt starvation
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 22 Feb 2012 12:03:30 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
If a low prio writer gets preempted while holding the seqlock write
locked, a high prio reader spins forever on RT.
diff --git a/debian/patches/features/all/rt/signal-fix-up-rcu-wreckage.patch b/debian/patches/features/all/rt/signal-fix-up-rcu-wreckage.patch
index 6b3f065..0c69b18 100644
--- a/debian/patches/features/all/rt/signal-fix-up-rcu-wreckage.patch
+++ b/debian/patches/features/all/rt/signal-fix-up-rcu-wreckage.patch
@@ -1,7 +1,7 @@
Subject: signal: Make __lock_task_sighand() RT aware
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 22 Jul 2011 08:07:08 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
local_irq_save() + spin_lock(&sighand->siglock) does not work on
-RT. Use the nort variants.
diff --git a/debian/patches/features/all/rt/signal-revert-ptrace-preempt-magic.patch b/debian/patches/features/all/rt/signal-revert-ptrace-preempt-magic.patch
index ff056e6..55c375e 100644
--- a/debian/patches/features/all/rt/signal-revert-ptrace-preempt-magic.patch
+++ b/debian/patches/features/all/rt/signal-revert-ptrace-preempt-magic.patch
@@ -1,7 +1,7 @@
Subject: signal: Revert ptrace preempt magic
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 21 Sep 2011 19:57:12 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Upstream commit '53da1d9456fe7f8 fix ptrace slowness' is nothing more
than a bandaid around the ptrace design trainwreck. It's not a
diff --git a/debian/patches/features/all/rt/signals-allow-rt-tasks-to-cache-one-sigqueue-struct.patch b/debian/patches/features/all/rt/signals-allow-rt-tasks-to-cache-one-sigqueue-struct.patch
index c62572e..e012088 100644
--- a/debian/patches/features/all/rt/signals-allow-rt-tasks-to-cache-one-sigqueue-struct.patch
+++ b/debian/patches/features/all/rt/signals-allow-rt-tasks-to-cache-one-sigqueue-struct.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 3 Jul 2009 08:44:56 -0500
Subject: signals: Allow rt tasks to cache one sigqueue struct
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
To avoid allocation allow rt tasks to cache one sigqueue struct in
task struct.
@@ -18,7 +18,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
-@@ -1684,6 +1684,7 @@ struct task_struct {
+@@ -1685,6 +1685,7 @@ struct task_struct {
/* signal handlers */
struct signal_struct *signal;
struct sighand_struct *sighand;
@@ -49,7 +49,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/kernel/fork.c
+++ b/kernel/fork.c
-@@ -1549,6 +1549,7 @@ static __latent_entropy struct task_stru
+@@ -1552,6 +1552,7 @@ static __latent_entropy struct task_stru
spin_lock_init(&p->alloc_lock);
init_sigpending(&p->pending);
diff --git a/debian/patches/features/all/rt/skbufhead-raw-lock.patch b/debian/patches/features/all/rt/skbufhead-raw-lock.patch
index 6b464e0..1ad27bf 100644
--- a/debian/patches/features/all/rt/skbufhead-raw-lock.patch
+++ b/debian/patches/features/all/rt/skbufhead-raw-lock.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 12 Jul 2011 15:38:34 +0200
Subject: net: Use skbufhead with raw lock
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Use the rps lock as rawlock so we can keep irq-off regions. It looks low
latency. However we can't kfree() from this context therefore we defer this
@@ -16,7 +16,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
-@@ -2846,6 +2846,7 @@ struct softnet_data {
+@@ -2851,6 +2851,7 @@ struct softnet_data {
unsigned int dropped;
struct sk_buff_head input_pkt_queue;
struct napi_struct backlog;
@@ -91,7 +91,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
static void flush_all_backlogs(void)
-@@ -4852,7 +4855,9 @@ static int process_backlog(struct napi_s
+@@ -4854,7 +4857,9 @@ static int process_backlog(struct napi_s
while (again) {
struct sk_buff *skb;
@@ -101,7 +101,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
rcu_read_lock();
__netif_receive_skb(skb);
rcu_read_unlock();
-@@ -4860,9 +4865,9 @@ static int process_backlog(struct napi_s
+@@ -4862,9 +4867,9 @@ static int process_backlog(struct napi_s
if (++work >= quota)
return work;
@@ -112,7 +112,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
rps_lock(sd);
if (skb_queue_empty(&sd->input_pkt_queue)) {
/*
-@@ -5204,13 +5209,21 @@ static __latent_entropy void net_rx_acti
+@@ -5206,13 +5211,21 @@ static __latent_entropy void net_rx_acti
struct softnet_data *sd = this_cpu_ptr(&softnet_data);
unsigned long time_limit = jiffies + 2;
int budget = netdev_budget;
@@ -134,7 +134,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
for (;;) {
struct napi_struct *n;
-@@ -8013,6 +8026,9 @@ static int dev_cpu_callback(struct notif
+@@ -8015,6 +8028,9 @@ static int dev_cpu_callback(struct notif
netif_rx_ni(skb);
input_queue_head_incr(oldsd);
}
@@ -144,7 +144,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
return NOTIFY_OK;
}
-@@ -8317,8 +8333,9 @@ static int __init net_dev_init(void)
+@@ -8319,8 +8335,9 @@ static int __init net_dev_init(void)
INIT_WORK(flush, flush_backlog);
diff --git a/debian/patches/features/all/rt/slub-disable-SLUB_CPU_PARTIAL.patch b/debian/patches/features/all/rt/slub-disable-SLUB_CPU_PARTIAL.patch
index 5c615fe..24bea1e 100644
--- a/debian/patches/features/all/rt/slub-disable-SLUB_CPU_PARTIAL.patch
+++ b/debian/patches/features/all/rt/slub-disable-SLUB_CPU_PARTIAL.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 15 Apr 2015 19:00:47 +0200
Subject: slub: Disable SLUB_CPU_PARTIAL
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:915
|in_atomic(): 1, irqs_disabled(): 0, pid: 87, name: rcuop/7
diff --git a/debian/patches/features/all/rt/slub-enable-irqs-for-no-wait.patch b/debian/patches/features/all/rt/slub-enable-irqs-for-no-wait.patch
index da7e537..37e020d 100644
--- a/debian/patches/features/all/rt/slub-enable-irqs-for-no-wait.patch
+++ b/debian/patches/features/all/rt/slub-enable-irqs-for-no-wait.patch
@@ -1,7 +1,7 @@
Subject: slub: Enable irqs for __GFP_WAIT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 09 Jan 2013 12:08:15 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
SYSTEM_RUNNING might be too late for enabling interrupts. Allocations
with GFP_WAIT can happen before that. So use this as an indicator.
diff --git a/debian/patches/features/all/rt/snd-pcm-fix-snd_pcm_stream_lock-irqs_disabled-splats.patch b/debian/patches/features/all/rt/snd-pcm-fix-snd_pcm_stream_lock-irqs_disabled-splats.patch
index 9cfdc40..6ce631d 100644
--- a/debian/patches/features/all/rt/snd-pcm-fix-snd_pcm_stream_lock-irqs_disabled-splats.patch
+++ b/debian/patches/features/all/rt/snd-pcm-fix-snd_pcm_stream_lock-irqs_disabled-splats.patch
@@ -1,7 +1,7 @@
From: Mike Galbraith <umgwanakikbuti at gmail.com>
Date: Wed, 18 Feb 2015 15:09:23 +0100
Subject: snd/pcm: fix snd_pcm_stream_lock*() irqs_disabled() splats
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Locking functions previously using read_lock_irq()/read_lock_irqsave() were
changed to local_irq_disable/save(), leading to gripes. Use nort variants.
diff --git a/debian/patches/features/all/rt/softirq-disable-softirq-stacks-for-rt.patch b/debian/patches/features/all/rt/softirq-disable-softirq-stacks-for-rt.patch
index d54630a..63ccb9a 100644
--- a/debian/patches/features/all/rt/softirq-disable-softirq-stacks-for-rt.patch
+++ b/debian/patches/features/all/rt/softirq-disable-softirq-stacks-for-rt.patch
@@ -1,7 +1,7 @@
Subject: softirq: Disable softirq stacks for RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Mon, 18 Jul 2011 13:59:17 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Disable extra stacks for softirqs. We want to preempt softirqs and
having them on special IRQ-stack does not make this easier.
diff --git a/debian/patches/features/all/rt/softirq-preempt-fix-3-re.patch b/debian/patches/features/all/rt/softirq-preempt-fix-3-re.patch
index 5048965..8edc465 100644
--- a/debian/patches/features/all/rt/softirq-preempt-fix-3-re.patch
+++ b/debian/patches/features/all/rt/softirq-preempt-fix-3-re.patch
@@ -1,7 +1,7 @@
Subject: softirq: Check preemption after reenabling interrupts
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 13 Nov 2011 17:17:09 +0100 (CET)
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
raise_softirq_irqoff() disables interrupts and wakes the softirq
daemon, but after reenabling interrupts there is no preemption check,
@@ -136,7 +136,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
atomic_long_inc(&skb->dev->rx_dropped);
kfree_skb(skb);
-@@ -4807,6 +4810,7 @@ static void net_rps_action_and_irq_enabl
+@@ -4809,6 +4812,7 @@ static void net_rps_action_and_irq_enabl
sd->rps_ipi_list = NULL;
local_irq_enable();
@@ -144,7 +144,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/* Send pending IPI's to kick RPS processing on remote cpus. */
while (remsd) {
-@@ -4820,6 +4824,7 @@ static void net_rps_action_and_irq_enabl
+@@ -4822,6 +4826,7 @@ static void net_rps_action_and_irq_enabl
} else
#endif
local_irq_enable();
@@ -152,7 +152,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
static bool sd_has_rps_ipi_waiting(struct softnet_data *sd)
-@@ -4897,6 +4902,7 @@ void __napi_schedule(struct napi_struct
+@@ -4899,6 +4904,7 @@ void __napi_schedule(struct napi_struct
local_irq_save(flags);
____napi_schedule(this_cpu_ptr(&softnet_data), n);
local_irq_restore(flags);
@@ -160,7 +160,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
EXPORT_SYMBOL(__napi_schedule);
-@@ -7998,6 +8004,7 @@ static int dev_cpu_callback(struct notif
+@@ -8000,6 +8006,7 @@ static int dev_cpu_callback(struct notif
raise_softirq_irqoff(NET_TX_SOFTIRQ);
local_irq_enable();
diff --git a/debian/patches/features/all/rt/softirq-split-locks.patch b/debian/patches/features/all/rt/softirq-split-locks.patch
index a6ce826..bacd940 100644
--- a/debian/patches/features/all/rt/softirq-split-locks.patch
+++ b/debian/patches/features/all/rt/softirq-split-locks.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Thu, 04 Oct 2012 14:20:47 +0100
Subject: softirq: Split softirq locks
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The 3.x RT series removed the split softirq implementation in favour
of pushing softirq processing into the context of the thread which
@@ -173,7 +173,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
* Are we in NMI context?
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
-@@ -1964,6 +1964,8 @@ struct task_struct {
+@@ -1965,6 +1965,8 @@ struct task_struct {
#endif
#ifdef CONFIG_PREEMPT_RT_BASE
struct rcu_head put_rcu;
@@ -182,7 +182,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
#endif
#ifdef CONFIG_DEBUG_ATOMIC_SLEEP
unsigned long task_state_change;
-@@ -2280,6 +2282,7 @@ extern void thread_group_cputime_adjuste
+@@ -2281,6 +2283,7 @@ extern void thread_group_cputime_adjuste
/*
* Per process flags
*/
diff --git a/debian/patches/features/all/rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch b/debian/patches/features/all/rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch
index 6fb1ee5..a5931a9 100644
--- a/debian/patches/features/all/rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch
+++ b/debian/patches/features/all/rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 20 Jan 2016 16:34:17 +0100
Subject: softirq: split timer softirqs out of ksoftirqd
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The softirqd runs in -RT with SCHED_FIFO (prio 1) and deals mostly with
timer wakeup which can not happen in hardirq context. The prio has been
diff --git a/debian/patches/features/all/rt/softirq-wake-the-timer-softirq-if-needed.patch b/debian/patches/features/all/rt/softirq-wake-the-timer-softirq-if-needed.patch
new file mode 100644
index 0000000..84ef74d
--- /dev/null
+++ b/debian/patches/features/all/rt/softirq-wake-the-timer-softirq-if-needed.patch
@@ -0,0 +1,73 @@
+From 8f8d71af7dbd27cb36841907b50bd1b6ef181786 Mon Sep 17 00:00:00 2001
+From: Mike Galbraith <efault at gmx.de>
+Date: Fri, 20 Jan 2017 18:10:20 +0100
+Subject: [PATCH] softirq: wake the timer softirq if needed
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
+
+The irq-exit path only checks the "normal"-softirq thread if it is
+running and ignores the state of the "timer"-softirq thread. It is possible
+that the timer-softirq thread is and has work pending which leads to the
+following warning:
+
+[ 84.087571] NOHZ: local_softirq_pending 02
+[ 84.087593] NOHZ: local_softirq_pending 02
+[ 84.087598] NOHZ: local_softirq_pending 02
+[ 84.087904] NOHZ: local_softirq_pending 02
+[ 84.088526] NOHZ: local_softirq_pending 02
+[ 84.088899] NOHZ: local_softirq_pending 02
+[ 84.089463] NOHZ: local_softirq_pending 02
+[ 115.013470] NOHZ: local_softirq_pending 02
+[ 115.013601] NOHZ: local_softirq_pending 02
+[ 115.013709] NOHZ: local_softirq_pending 02
+
+This was introduced during the timer-softirq split.
+
+Cc: stable-rt at vger.kernel.org
+Signed-off-by: Mike Galbraith <efault at gmx.de>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ kernel/softirq.c | 10 ++++------
+ 1 file changed, 4 insertions(+), 6 deletions(-)
+
+--- a/kernel/softirq.c
++++ b/kernel/softirq.c
+@@ -206,6 +206,7 @@ static void handle_softirq(unsigned int
+ }
+ }
+
++#ifndef CONFIG_PREEMPT_RT_FULL
+ /*
+ * If ksoftirqd is scheduled, we do not want to process pending softirqs
+ * right now. Let ksoftirqd handle this at its own rate, to get fairness.
+@@ -217,7 +218,6 @@ static bool ksoftirqd_running(void)
+ return tsk && (tsk->state == TASK_RUNNING);
+ }
+
+-#ifndef CONFIG_PREEMPT_RT_FULL
+ static inline int ksoftirqd_softirq_pending(void)
+ {
+ return local_softirq_pending();
+@@ -773,13 +773,10 @@ void irq_enter(void)
+
+ static inline void invoke_softirq(void)
+ {
+-#ifdef CONFIG_PREEMPT_RT_FULL
+- unsigned long flags;
+-#endif
+-
++#ifndef CONFIG_PREEMPT_RT_FULL
+ if (ksoftirqd_running())
+ return;
+-#ifndef CONFIG_PREEMPT_RT_FULL
++
+ if (!force_irqthreads) {
+ #ifdef CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK
+ /*
+@@ -800,6 +797,7 @@ static inline void invoke_softirq(void)
+ wakeup_softirqd();
+ }
+ #else /* PREEMPT_RT_FULL */
++ unsigned long flags;
+
+ local_irq_save(flags);
+ if (__this_cpu_read(ksoftirqd) &&
diff --git a/debian/patches/features/all/rt/sparc64-use-generic-rwsem-spinlocks-rt.patch b/debian/patches/features/all/rt/sparc64-use-generic-rwsem-spinlocks-rt.patch
index aacfb4b..5aac038 100644
--- a/debian/patches/features/all/rt/sparc64-use-generic-rwsem-spinlocks-rt.patch
+++ b/debian/patches/features/all/rt/sparc64-use-generic-rwsem-spinlocks-rt.patch
@@ -1,7 +1,7 @@
From: Allen Pais <allen.pais at oracle.com>
Date: Fri, 13 Dec 2013 09:44:41 +0530
Subject: sparc64: use generic rwsem spinlocks rt
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Signed-off-by: Allen Pais <allen.pais at oracle.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
diff --git a/debian/patches/features/all/rt/spinlock-types-separate-raw.patch b/debian/patches/features/all/rt/spinlock-types-separate-raw.patch
index e4cd06f..2a23eeb 100644
--- a/debian/patches/features/all/rt/spinlock-types-separate-raw.patch
+++ b/debian/patches/features/all/rt/spinlock-types-separate-raw.patch
@@ -1,7 +1,7 @@
Subject: spinlock: Split the lock types header
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 29 Jun 2011 19:34:01 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Split raw_spinlock into its own file and the remaining spinlock_t into
its own non-RT header. The non-RT header will be replaced later by sleeping
diff --git a/debian/patches/features/all/rt/stop-machine-raw-lock.patch b/debian/patches/features/all/rt/stop-machine-raw-lock.patch
index 9944651..e065bb2 100644
--- a/debian/patches/features/all/rt/stop-machine-raw-lock.patch
+++ b/debian/patches/features/all/rt/stop-machine-raw-lock.patch
@@ -1,7 +1,7 @@
Subject: stop_machine: Use raw spinlocks
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 29 Jun 2011 11:01:51 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Use raw-locks in stomp_machine() to allow locking in irq-off regions.
diff --git a/debian/patches/features/all/rt/stop_machine-convert-stop_machine_run-to-PREEMPT_RT.patch b/debian/patches/features/all/rt/stop_machine-convert-stop_machine_run-to-PREEMPT_RT.patch
index 8690bd8..97d2a02 100644
--- a/debian/patches/features/all/rt/stop_machine-convert-stop_machine_run-to-PREEMPT_RT.patch
+++ b/debian/patches/features/all/rt/stop_machine-convert-stop_machine_run-to-PREEMPT_RT.patch
@@ -1,7 +1,7 @@
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 3 Jul 2009 08:30:27 -0500
Subject: stop_machine: convert stop_machine_run() to PREEMPT_RT
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Instead of playing with non-preemption, introduce explicit
startup serialization. This is more robust and cleaner as
diff --git a/debian/patches/features/all/rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch b/debian/patches/features/all/rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch
index c6d866a..9f68023 100644
--- a/debian/patches/features/all/rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch
+++ b/debian/patches/features/all/rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch
@@ -1,7 +1,7 @@
From: Mike Galbraith <umgwanakikbuti at gmail.com>
Date: Wed, 18 Feb 2015 16:05:28 +0100
Subject: sunrpc: Make svc_xprt_do_enqueue() use get_cpu_light()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:915
|in_atomic(): 1, irqs_disabled(): 0, pid: 3194, name: rpc.nfsd
diff --git a/debian/patches/features/all/rt/suspend-prevernt-might-sleep-splats.patch b/debian/patches/features/all/rt/suspend-prevernt-might-sleep-splats.patch
index 193313f..1387149 100644
--- a/debian/patches/features/all/rt/suspend-prevernt-might-sleep-splats.patch
+++ b/debian/patches/features/all/rt/suspend-prevernt-might-sleep-splats.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Thu, 15 Jul 2010 10:29:00 +0200
Subject: suspend: Prevent might sleep splats
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
timekeeping suspend/resume calls read_persistant_clock() which takes
rtc_lock. That results in might sleep warnings because at that point
diff --git a/debian/patches/features/all/rt/sysfs-realtime-entry.patch b/debian/patches/features/all/rt/sysfs-realtime-entry.patch
index dd96a0e..0ee6425 100644
--- a/debian/patches/features/all/rt/sysfs-realtime-entry.patch
+++ b/debian/patches/features/all/rt/sysfs-realtime-entry.patch
@@ -1,7 +1,7 @@
Subject: sysfs: Add /sys/kernel/realtime entry
From: Clark Williams <williams at redhat.com>
Date: Sat Jul 30 21:55:53 2011 -0500
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Add a /sys/kernel entry to indicate that the kernel is a
realtime kernel.
diff --git a/debian/patches/features/all/rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.patch b/debian/patches/features/all/rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.patch
index ac679f2..d27bca1 100644
--- a/debian/patches/features/all/rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.patch
+++ b/debian/patches/features/all/rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.patch
@@ -1,7 +1,7 @@
Subject: tasklet: Prevent tasklets from going into infinite spin in RT
From: Ingo Molnar <mingo at elte.hu>
Date: Tue Nov 29 20:18:22 2011 -0500
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
When CONFIG_PREEMPT_RT_FULL is enabled, tasklets run as threads,
and spinlocks turn are mutexes. But this can cause issues with
diff --git a/debian/patches/features/all/rt/thermal-Defer-thermal-wakups-to-threads.patch b/debian/patches/features/all/rt/thermal-Defer-thermal-wakups-to-threads.patch
index 548357f..a513a6c 100644
--- a/debian/patches/features/all/rt/thermal-Defer-thermal-wakups-to-threads.patch
+++ b/debian/patches/features/all/rt/thermal-Defer-thermal-wakups-to-threads.patch
@@ -1,7 +1,7 @@
From: Daniel Wagner <wagi at monom.org>
Date: Tue, 17 Feb 2015 09:37:44 +0100
Subject: thermal: Defer thermal wakups to threads
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
On RT the spin lock in pkg_temp_thermal_platfrom_thermal_notify will
call schedule while we run in irq context.
diff --git a/debian/patches/features/all/rt/tick-broadcast--Make-hrtimer-irqsafe.patch b/debian/patches/features/all/rt/tick-broadcast--Make-hrtimer-irqsafe.patch
index 3bc466e..a1b4f80 100644
--- a/debian/patches/features/all/rt/tick-broadcast--Make-hrtimer-irqsafe.patch
+++ b/debian/patches/features/all/rt/tick-broadcast--Make-hrtimer-irqsafe.patch
@@ -1,7 +1,7 @@
Subject: tick/broadcast: Make broadcast hrtimer irqsafe
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sat, 27 Feb 2016 10:47:10 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Otherwise we end up with the following:
diff --git a/debian/patches/features/all/rt/timekeeping-split-jiffies-lock.patch b/debian/patches/features/all/rt/timekeeping-split-jiffies-lock.patch
index 02284cd..7837e23 100644
--- a/debian/patches/features/all/rt/timekeeping-split-jiffies-lock.patch
+++ b/debian/patches/features/all/rt/timekeeping-split-jiffies-lock.patch
@@ -1,7 +1,7 @@
Subject: timekeeping: Split jiffies seqlock
From: Thomas Gleixner <tglx at linutronix.de>
Date: Thu, 14 Feb 2013 22:36:59 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Replace jiffies_lock seqlock with a simple seqcounter and a rawlock so
it can be taken in atomic context on RT.
diff --git a/debian/patches/features/all/rt/timer-delay-waking-softirqs-from-the-jiffy-tick.patch b/debian/patches/features/all/rt/timer-delay-waking-softirqs-from-the-jiffy-tick.patch
index a3a015b..8d0f93f 100644
--- a/debian/patches/features/all/rt/timer-delay-waking-softirqs-from-the-jiffy-tick.patch
+++ b/debian/patches/features/all/rt/timer-delay-waking-softirqs-from-the-jiffy-tick.patch
@@ -1,7 +1,7 @@
From: Peter Zijlstra <peterz at infradead.org>
Date: Fri, 21 Aug 2009 11:56:45 +0200
Subject: timer: delay waking softirqs from the jiffy tick
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
People were complaining about broken balancing with the recent -rt
series.
diff --git a/debian/patches/features/all/rt/timer-fd-avoid-live-lock.patch b/debian/patches/features/all/rt/timer-fd-avoid-live-lock.patch
index 9495195..4ab53c3 100644
--- a/debian/patches/features/all/rt/timer-fd-avoid-live-lock.patch
+++ b/debian/patches/features/all/rt/timer-fd-avoid-live-lock.patch
@@ -1,7 +1,7 @@
Subject: timer-fd: Prevent live lock
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 25 Jan 2012 11:08:40 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
If hrtimer_try_to_cancel() requires a retry, then depending on the
priority setting te retry loop might prevent timer callback completion
diff --git a/debian/patches/features/all/rt/timer-make-the-base-lock-raw.patch b/debian/patches/features/all/rt/timer-make-the-base-lock-raw.patch
index a393a55..a94a901 100644
--- a/debian/patches/features/all/rt/timer-make-the-base-lock-raw.patch
+++ b/debian/patches/features/all/rt/timer-make-the-base-lock-raw.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 13 Jul 2016 18:22:23 +0200
Subject: [PATCH] timer: make the base lock raw
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The part where the base lock is held got more predictable / shorter after the
timer rework. One reason is the lack of re-cascading.
diff --git a/debian/patches/features/all/rt/timers-prepare-for-full-preemption.patch b/debian/patches/features/all/rt/timers-prepare-for-full-preemption.patch
index 1994517..ea1a878 100644
--- a/debian/patches/features/all/rt/timers-prepare-for-full-preemption.patch
+++ b/debian/patches/features/all/rt/timers-prepare-for-full-preemption.patch
@@ -1,7 +1,7 @@
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 3 Jul 2009 08:29:34 -0500
Subject: timers: Prepare for full preemption
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
When softirqs can be preempted we need to make sure that cancelling
the timer from the active thread can not deadlock vs. a running timer
diff --git a/debian/patches/features/all/rt/trace-latency-hist-Consider-new-argument-when-probin.patch b/debian/patches/features/all/rt/trace-latency-hist-Consider-new-argument-when-probin.patch
index da411c7..4fd7969 100644
--- a/debian/patches/features/all/rt/trace-latency-hist-Consider-new-argument-when-probin.patch
+++ b/debian/patches/features/all/rt/trace-latency-hist-Consider-new-argument-when-probin.patch
@@ -2,7 +2,7 @@ From: Carsten Emde <C.Emde at osadl.org>
Date: Tue, 5 Jan 2016 10:21:59 +0100
Subject: trace/latency-hist: Consider new argument when probing the
sched_switch tracer
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The sched_switch tracer has got a new argument. Fix the latency tracer
accordingly.
diff --git a/debian/patches/features/all/rt/trace_Use_rcuidle_version_for_preemptoff_hist_trace_point.patch b/debian/patches/features/all/rt/trace_Use_rcuidle_version_for_preemptoff_hist_trace_point.patch
index b9cd15e..89c3708 100644
--- a/debian/patches/features/all/rt/trace_Use_rcuidle_version_for_preemptoff_hist_trace_point.patch
+++ b/debian/patches/features/all/rt/trace_Use_rcuidle_version_for_preemptoff_hist_trace_point.patch
@@ -1,7 +1,7 @@
Subject: trace: Use rcuidle version for preemptoff_hist trace point
From: Yang Shi <yang.shi at windriver.com>
Date: Tue, 23 Feb 2016 13:23:23 -0800
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
When running -rt kernel with both PREEMPT_OFF_HIST and LOCKDEP enabled,
the below error is reported:
diff --git a/debian/patches/features/all/rt/tracing-account-for-preempt-off-in-preempt_schedule.patch b/debian/patches/features/all/rt/tracing-account-for-preempt-off-in-preempt_schedule.patch
index f8fbd19..77cc52f 100644
--- a/debian/patches/features/all/rt/tracing-account-for-preempt-off-in-preempt_schedule.patch
+++ b/debian/patches/features/all/rt/tracing-account-for-preempt-off-in-preempt_schedule.patch
@@ -1,7 +1,7 @@
From: Steven Rostedt <rostedt at goodmis.org>
Date: Thu, 29 Sep 2011 12:24:30 -0500
Subject: tracing: Account for preempt off in preempt_schedule()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
The preempt_schedule() uses the preempt_disable_notrace() version
because it can cause infinite recursion by the function tracer as
diff --git a/debian/patches/features/all/rt/tty-serial-8250-don-t-take-the-trylock-during-oops.patch b/debian/patches/features/all/rt/tty-serial-8250-don-t-take-the-trylock-during-oops.patch
index 5d43760..64d4ec2 100644
--- a/debian/patches/features/all/rt/tty-serial-8250-don-t-take-the-trylock-during-oops.patch
+++ b/debian/patches/features/all/rt/tty-serial-8250-don-t-take-the-trylock-during-oops.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Mon, 11 Apr 2016 16:55:02 +0200
Subject: [PATCH] tty: serial: 8250: don't take the trylock during oops
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
An oops with irqs off (panic() from irqsafe hrtimer like the watchdog
timer) will lead to a lockdep warning on each invocation and as such
diff --git a/debian/patches/features/all/rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch b/debian/patches/features/all/rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch
index 292e752..0715d3f 100644
--- a/debian/patches/features/all/rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch
+++ b/debian/patches/features/all/rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch
@@ -1,7 +1,7 @@
Subject: net: Remove preemption disabling in netif_rx()
From: Priyanka Jain <Priyanka.Jain at freescale.com>
Date: Thu, 17 May 2012 09:35:11 +0530
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
1)enqueue_to_backlog() (called from netif_rx) should be
bind to a particluar CPU. This can be achieved by
diff --git a/debian/patches/features/all/rt/usb-use-_nort-in-giveback.patch b/debian/patches/features/all/rt/usb-use-_nort-in-giveback.patch
index a2ddcef..911713c 100644
--- a/debian/patches/features/all/rt/usb-use-_nort-in-giveback.patch
+++ b/debian/patches/features/all/rt/usb-use-_nort-in-giveback.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 8 Nov 2013 17:34:54 +0100
Subject: usb: Use _nort in giveback function
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Since commit 94dfd7ed ("USB: HCD: support giveback of URB in tasklet
context") I see
diff --git a/debian/patches/features/all/rt/user-use-local-irq-nort.patch b/debian/patches/features/all/rt/user-use-local-irq-nort.patch
index b8e5840..5ac1295 100644
--- a/debian/patches/features/all/rt/user-use-local-irq-nort.patch
+++ b/debian/patches/features/all/rt/user-use-local-irq-nort.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 21 Jul 2009 23:06:05 +0200
Subject: core: Do not disable interrupts on RT in kernel/users.c
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Use the local_irq_*_nort variants to reduce latencies in RT. The code
is serialized by the locks. No need to disable interrupts.
diff --git a/debian/patches/features/all/rt/wait.h-include-atomic.h.patch b/debian/patches/features/all/rt/wait.h-include-atomic.h.patch
index 10fba15..59f3409 100644
--- a/debian/patches/features/all/rt/wait.h-include-atomic.h.patch
+++ b/debian/patches/features/all/rt/wait.h-include-atomic.h.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Mon, 28 Oct 2013 12:19:57 +0100
Subject: wait.h: include atomic.h
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
| CC init/main.o
|In file included from include/linux/mmzone.h:9:0,
diff --git a/debian/patches/features/all/rt/work-queue-work-around-irqsafe-timer-optimization.patch b/debian/patches/features/all/rt/work-queue-work-around-irqsafe-timer-optimization.patch
index 8da5718..1a77ea5 100644
--- a/debian/patches/features/all/rt/work-queue-work-around-irqsafe-timer-optimization.patch
+++ b/debian/patches/features/all/rt/work-queue-work-around-irqsafe-timer-optimization.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Mon, 01 Jul 2013 11:02:42 +0200
Subject: workqueue: Prevent workqueue versus ata-piix livelock
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
An Intel i7 system regularly detected rcu_preempt stalls after the kernel
was upgraded from 3.6-rt to 3.8-rt. When the stall happened, disk I/O was no
diff --git a/debian/patches/features/all/rt/work-simple-Simple-work-queue-implemenation.patch b/debian/patches/features/all/rt/work-simple-Simple-work-queue-implemenation.patch
index 0b72cdc..74d9faf 100644
--- a/debian/patches/features/all/rt/work-simple-Simple-work-queue-implemenation.patch
+++ b/debian/patches/features/all/rt/work-simple-Simple-work-queue-implemenation.patch
@@ -1,7 +1,7 @@
From: Daniel Wagner <daniel.wagner at bmw-carit.de>
Date: Fri, 11 Jul 2014 15:26:11 +0200
Subject: work-simple: Simple work queue implemenation
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Provides a framework for enqueuing callbacks from irq context
PREEMPT_RT_FULL safe. The callbacks are executed in kthread context.
diff --git a/debian/patches/features/all/rt/workqueue-distangle-from-rq-lock.patch b/debian/patches/features/all/rt/workqueue-distangle-from-rq-lock.patch
index bf3af66..0c56444 100644
--- a/debian/patches/features/all/rt/workqueue-distangle-from-rq-lock.patch
+++ b/debian/patches/features/all/rt/workqueue-distangle-from-rq-lock.patch
@@ -22,7 +22,7 @@ Cc: Jens Axboe <axboe at kernel.dk>
Cc: Linus Torvalds <torvalds at linux-foundation.org>
Link: http://lkml.kernel.org/r/20110622174919.135236139@linutronix.de
Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
---
kernel/sched/core.c | 81 ++++++++------------------------------------
diff --git a/debian/patches/features/all/rt/workqueue-prevent-deadlock-stall.patch b/debian/patches/features/all/rt/workqueue-prevent-deadlock-stall.patch
index 3b6682f..22553da 100644
--- a/debian/patches/features/all/rt/workqueue-prevent-deadlock-stall.patch
+++ b/debian/patches/features/all/rt/workqueue-prevent-deadlock-stall.patch
@@ -1,7 +1,7 @@
Subject: workqueue: Prevent deadlock/stall on RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 27 Jun 2014 16:24:52 +0200 (CEST)
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Austin reported a XFS deadlock/stall on RT where scheduled work gets
never exececuted and tasks are waiting for each other for ever.
diff --git a/debian/patches/features/all/rt/workqueue-use-locallock.patch b/debian/patches/features/all/rt/workqueue-use-locallock.patch
index c201464..d7db67e 100644
--- a/debian/patches/features/all/rt/workqueue-use-locallock.patch
+++ b/debian/patches/features/all/rt/workqueue-use-locallock.patch
@@ -1,7 +1,7 @@
Subject: workqueue: Use local irq lock instead of irq disable regions
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 17 Jul 2011 21:42:26 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Use a local_irq_lock as a replacement for irq off regions. We keep the
semantic of irq-off in regard to the pool->lock and remain preemptible.
diff --git a/debian/patches/features/all/rt/workqueue-use-rcu.patch b/debian/patches/features/all/rt/workqueue-use-rcu.patch
index 5f27ef9..1147e6f 100644
--- a/debian/patches/features/all/rt/workqueue-use-rcu.patch
+++ b/debian/patches/features/all/rt/workqueue-use-rcu.patch
@@ -1,7 +1,7 @@
Subject: workqueue: Use normal rcu
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 24 Jul 2013 15:26:54 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
There is no need for sched_rcu. The undocumented reason why sched_rcu
is used is to avoid a few explicit rcu_read_lock()/unlock() pairs by
diff --git a/debian/patches/features/all/rt/x86-UV-raw_spinlock-conversion.patch b/debian/patches/features/all/rt/x86-UV-raw_spinlock-conversion.patch
index d47249e..8e1c12a 100644
--- a/debian/patches/features/all/rt/x86-UV-raw_spinlock-conversion.patch
+++ b/debian/patches/features/all/rt/x86-UV-raw_spinlock-conversion.patch
@@ -1,7 +1,7 @@
From: Mike Galbraith <umgwanakikbuti at gmail.com>
Date: Sun, 2 Nov 2014 08:31:37 +0100
Subject: x86: UV: raw_spinlock conversion
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Shrug. Lots of hobbyists have a beast in their basement, right?
diff --git a/debian/patches/features/all/rt/x86-apic-get-rid-of-warning-acpi_ioapic_lock-defined.patch b/debian/patches/features/all/rt/x86-apic-get-rid-of-warning-acpi_ioapic_lock-defined.patch
index f7864ee..fba4f04 100644
--- a/debian/patches/features/all/rt/x86-apic-get-rid-of-warning-acpi_ioapic_lock-defined.patch
+++ b/debian/patches/features/all/rt/x86-apic-get-rid-of-warning-acpi_ioapic_lock-defined.patch
@@ -3,7 +3,7 @@ From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 21 Oct 2016 10:29:11 +0200
Subject: [PATCH] x86/apic: get rid of "warning: 'acpi_ioapic_lock' defined but
not used"
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
kbuild test robot reported this against the -RT tree:
diff --git a/debian/patches/features/all/rt/x86-crypto-reduce-preempt-disabled-regions.patch b/debian/patches/features/all/rt/x86-crypto-reduce-preempt-disabled-regions.patch
index 9451314..57c6d65 100644
--- a/debian/patches/features/all/rt/x86-crypto-reduce-preempt-disabled-regions.patch
+++ b/debian/patches/features/all/rt/x86-crypto-reduce-preempt-disabled-regions.patch
@@ -1,7 +1,7 @@
Subject: x86: crypto: Reduce preempt disabled regions
From: Peter Zijlstra <peterz at infradead.org>
Date: Mon, 14 Nov 2011 18:19:27 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Restrict the preempt disabled regions to the actual floating point
operations and enable preemption for the administrative actions.
diff --git a/debian/patches/features/all/rt/x86-highmem-add-a-already-used-pte-check.patch b/debian/patches/features/all/rt/x86-highmem-add-a-already-used-pte-check.patch
index c82668b..feece4f 100644
--- a/debian/patches/features/all/rt/x86-highmem-add-a-already-used-pte-check.patch
+++ b/debian/patches/features/all/rt/x86-highmem-add-a-already-used-pte-check.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Mon, 11 Mar 2013 17:09:55 +0100
Subject: x86/highmem: Add a "already used pte" check
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
This is a copy from kmap_atomic_prot().
diff --git a/debian/patches/features/all/rt/x86-io-apic-migra-no-unmask.patch b/debian/patches/features/all/rt/x86-io-apic-migra-no-unmask.patch
index 95e06ca..48de475 100644
--- a/debian/patches/features/all/rt/x86-io-apic-migra-no-unmask.patch
+++ b/debian/patches/features/all/rt/x86-io-apic-migra-no-unmask.patch
@@ -1,7 +1,7 @@
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 3 Jul 2009 08:29:27 -0500
Subject: x86/ioapic: Do not unmask io_apic when interrupt is in progress
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
With threaded interrupts we might see an interrupt in progress on
migration. Do not unmask it when this is the case.
diff --git a/debian/patches/features/all/rt/x86-kvm-require-const-tsc-for-rt.patch b/debian/patches/features/all/rt/x86-kvm-require-const-tsc-for-rt.patch
index ae15797..ab5fdaa 100644
--- a/debian/patches/features/all/rt/x86-kvm-require-const-tsc-for-rt.patch
+++ b/debian/patches/features/all/rt/x86-kvm-require-const-tsc-for-rt.patch
@@ -1,7 +1,7 @@
Subject: x86: kvm Require const tsc for RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 06 Nov 2011 12:26:18 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Non constant TSC is a nightmare on bare metal already, but with
virtualization it becomes a complete disaster because the workarounds
@@ -15,7 +15,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
-@@ -5925,6 +5925,13 @@ int kvm_arch_init(void *opaque)
+@@ -5932,6 +5932,13 @@ int kvm_arch_init(void *opaque)
goto out;
}
diff --git a/debian/patches/features/all/rt/x86-mce-timer-hrtimer.patch b/debian/patches/features/all/rt/x86-mce-timer-hrtimer.patch
index 11b820c..aa1eef2 100644
--- a/debian/patches/features/all/rt/x86-mce-timer-hrtimer.patch
+++ b/debian/patches/features/all/rt/x86-mce-timer-hrtimer.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Mon, 13 Dec 2010 16:33:39 +0100
Subject: x86: Convert mce timer to hrtimer
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
mce_timer is started in atomic contexts of cpu bringup. This results
in might_sleep() warnings on RT. Convert mce_timer to a hrtimer to
diff --git a/debian/patches/features/all/rt/x86-mce-use-swait-queue-for-mce-wakeups.patch b/debian/patches/features/all/rt/x86-mce-use-swait-queue-for-mce-wakeups.patch
index 470c45f..db6d933 100644
--- a/debian/patches/features/all/rt/x86-mce-use-swait-queue-for-mce-wakeups.patch
+++ b/debian/patches/features/all/rt/x86-mce-use-swait-queue-for-mce-wakeups.patch
@@ -1,7 +1,7 @@
Subject: x86/mce: use swait queue for mce wakeups
From: Steven Rostedt <rostedt at goodmis.org>
Date: Fri, 27 Feb 2015 15:20:37 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
We had a customer report a lockup on a 3.0-rt kernel that had the
following backtrace:
diff --git a/debian/patches/features/all/rt/x86-mm-cpa-avoid-wbinvd-for-PREEMPT.patch b/debian/patches/features/all/rt/x86-mm-cpa-avoid-wbinvd-for-PREEMPT.patch
new file mode 100644
index 0000000..df1bb0e
--- /dev/null
+++ b/debian/patches/features/all/rt/x86-mm-cpa-avoid-wbinvd-for-PREEMPT.patch
@@ -0,0 +1,40 @@
+From 80f348a39344f8e0695d5b6d00ffb413c248b0ca Mon Sep 17 00:00:00 2001
+From: John Ogness <john.ogness at linutronix.de>
+Date: Mon, 30 Jan 2017 09:41:21 +0100
+Subject: [PATCH] x86/mm/cpa: avoid wbinvd() for PREEMPT
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
+
+Although wbinvd() is faster than flushing many individual pages, it
+blocks the memory bus for "long" periods of time (>100us), thus
+directly causing unusually large latencies on all CPUs, regardless
+of any CPU isolation features that may be active.
+
+For 1024 pages, flushing those pages individually can take up to
+2200us, but the task remains fully preemptible during that time.
+
+Cc: stable-rt at vger.kernel.org
+Acked-by: Peter Zijlstra (Intel) <peterz at infradead.org>
+Signed-off-by: John Ogness <john.ogness at linutronix.de>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ arch/x86/mm/pageattr.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/arch/x86/mm/pageattr.c
++++ b/arch/x86/mm/pageattr.c
+@@ -214,7 +214,15 @@ static void cpa_flush_array(unsigned lon
+ int in_flags, struct page **pages)
+ {
+ unsigned int i, level;
++#ifdef CONFIG_PREEMPT
++ /*
++ * Avoid wbinvd() because it causes latencies on all CPUs,
++ * regardless of any CPU isolation that may be in effect.
++ */
++ unsigned long do_wbinvd = 0;
++#else
+ unsigned long do_wbinvd = cache && numpages >= 1024; /* 4M threshold */
++#endif
+
+ BUG_ON(irqs_disabled());
+
diff --git a/debian/patches/features/all/rt/x86-preempt-lazy.patch b/debian/patches/features/all/rt/x86-preempt-lazy.patch
index 40d662a..81e6373 100644
--- a/debian/patches/features/all/rt/x86-preempt-lazy.patch
+++ b/debian/patches/features/all/rt/x86-preempt-lazy.patch
@@ -1,7 +1,7 @@
Subject: x86: Support for lazy preemption
From: Thomas Gleixner <tglx at linutronix.de>
Date: Thu, 01 Nov 2012 11:03:47 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Implement the x86 pieces for lazy preempt.
diff --git a/debian/patches/features/all/rt/x86-signal-delay-calling-signals-on-32bit.patch b/debian/patches/features/all/rt/x86-signal-delay-calling-signals-on-32bit.patch
index 3b57c14..81b4726 100644
--- a/debian/patches/features/all/rt/x86-signal-delay-calling-signals-on-32bit.patch
+++ b/debian/patches/features/all/rt/x86-signal-delay-calling-signals-on-32bit.patch
@@ -1,7 +1,7 @@
From: Yang Shi <yang.shi at linaro.org>
Date: Thu, 10 Dec 2015 10:58:51 -0800
Subject: x86/signal: delay calling signals on 32bit
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
When running some ptrace single step tests on x86-32 machine, the below problem
is triggered:
diff --git a/debian/patches/features/all/rt/x86-stackprot-no-random-on-rt.patch b/debian/patches/features/all/rt/x86-stackprot-no-random-on-rt.patch
index deb2984..3ad000b 100644
--- a/debian/patches/features/all/rt/x86-stackprot-no-random-on-rt.patch
+++ b/debian/patches/features/all/rt/x86-stackprot-no-random-on-rt.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Thu, 16 Dec 2010 14:25:18 +0100
Subject: x86: stackprotector: Avoid random pool on rt
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
CPU bringup calls into the random pool to initialize the stack
canary. During boot that works nicely even on RT as the might sleep
diff --git a/debian/patches/features/all/rt/x86-use-gen-rwsem-spinlocks-rt.patch b/debian/patches/features/all/rt/x86-use-gen-rwsem-spinlocks-rt.patch
index 1df736d..41d41ef 100644
--- a/debian/patches/features/all/rt/x86-use-gen-rwsem-spinlocks-rt.patch
+++ b/debian/patches/features/all/rt/x86-use-gen-rwsem-spinlocks-rt.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sun, 26 Jul 2009 02:21:32 +0200
Subject: x86: Use generic rwsem_spinlocks on -rt
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9-rt1.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.6-rt4.tar.xz
Simplifies the separation of anon_rw_semaphores and rw_semaphores for
-rt.
diff --git a/debian/patches/series-rt b/debian/patches/series-rt
index e59c7fc..44852ee 100644
--- a/debian/patches/series-rt
+++ b/debian/patches/series-rt
@@ -37,7 +37,8 @@ features/all/rt/x86-apic-get-rid-of-warning-acpi_ioapic_lock-defined.patch
features/all/rt/rxrpc-remove-unused-static-variables.patch
features/all/rt/rcu-update-make-RCU_EXPEDITE_BOOT-default.patch
features/all/rt/locking-percpu-rwsem-use-swait-for-the-wating-writer.patch
-features/all/rt/btrfs-swap-free-and-trace-point-in-run_ordered_work.patch
+features/all/rt/pinctrl-qcom-Use-raw-spinlock-variants.patch
+features/all/rt/x86-mm-cpa-avoid-wbinvd-for-PREEMPT.patch
# Wants a different fix for upstream
features/all/rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch
@@ -245,7 +246,7 @@ features/all/rt/mm-backing-dev-don-t-disable-IRQs-in-wb_congested_pu.patch
features/all/rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch
# RADIX TREE
-features/all/rt/radix-tree-rt-aware.patch
+features/all/rt/radix-tree-use-local-locks.patch
# PANIC
features/all/rt/panic-disable-random-on-rt.patch
@@ -305,6 +306,7 @@ features/all/rt/kernel-softirq-unlock-with-irqs-on.patch
features/all/rt/kernel-migrate_disable-do-fastpath-in-atomic-irqs-of.patch
features/all/rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch
features/all/rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch
+features/all/rt/softirq-wake-the-timer-softirq-if-needed.patch
features/all/rt/rtmutex-trylock-is-okay-on-RT.patch
# compile fix due to rtmutex locks
@@ -558,6 +560,7 @@ features/all/rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend
# CGROUPS
features/all/rt/cgroups-use-simple-wait-in-css_release.patch
features/all/rt/cgroups-scheduling-while-atomic-in-cgroup-code.patch
+features/all/rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch
# New stuff
# Revisit: We need this in other places as well
--
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