[linux] 01/01: [rt] update to 4.4.2-rt6
debian-kernel at lists.debian.org
debian-kernel at lists.debian.org
Tue Feb 16 13:26:54 UTC 2016
This is an automated email from the git hooks/post-receive script.
ukleinek pushed a commit to branch ukleinek/4.4.1-rt6
in repository linux.
commit 91d4b9430341e2f355920fed92d9488c601cd126
Author: Uwe Kleine-König <ukleinek at debian.org>
Date: Tue Feb 16 14:23:21 2016 +0100
[rt] update to 4.4.2-rt6
---
debian/changelog | 3 +
...e-lock-unlock-symetry-versus-pi_lock-and-.patch | 2 +-
...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 | 59 ++
...lapic-mark-LAPIC-timer-handler-as-irqsafe.patch | 2 +-
.../rt/KVM-use-simple-waitqueue-for-vcpu-wq.patch | 2 +-
...vert-acpi_gbl_hardware-lock-back-to-a-raw.patch | 2 +-
.../rt/arch-arm64-Add-lazy-preempt-support.patch | 2 +-
...azy-preempt-add-TIF_NEED_RESCHED_LAZY-to-.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 +-
.../features/all/rt/arm-preempt-lazy-support.patch | 2 +-
.../features/all/rt/arm-unwind-use_raw_lock.patch | 2 +-
...ce-read_lock-to-rcu-lock-in-call_step_hoo.patch | 94 ++++
.../rt/arm64-xen--Make-XEN-depend-on-non-rt.patch | 2 +-
.../all/rt/ata-disable-interrupts-if-non-rt.patch | 2 +-
...st-pone-notifier-to-POST_D.patchto-POST_D.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-per-ctx-cpu_lock.patch | 2 +-
.../all/rt/block-mq-drop-preempt-disable.patch | 2 +-
.../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 +-
...alize-the-seq-counter-in-struct-btrfs_dev.patch | 2 +-
.../all/rt/bug-rt-dependend-variants.patch | 2 +-
...ps-scheduling-while-atomic-in-cgroup-code.patch | 2 +-
.../cgroups-use-simple-wait-in-css_release.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 | 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 | 2 +-
...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 +-
...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 | 2 +-
...idle-coupled-fix-warning-cpuidle_coupled_.patch | 2 +-
...rivers-media-vsp1_video-fix-compile-error.patch | 2 +-
.../rt/drivers-net-8139-disable-irq-nosync.patch | 2 +-
.../all/rt/drivers-net-fix-livelock-issues.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 +-
...15-drop-trace_i915_gem_ring_dispatch-onrt.patch | 2 +-
...ack-don-t-disable-preemption-during-trace.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 +-
.../fs-dcache-use-cpu-chill-in-trylock-loops.patch | 2 +-
.../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 +-
.../all/rt/fs-ntfs-disable-interrupt-non-rt.patch | 2 +-
.../rt/fs-replace-bh_uptodate_lock-for-rt.patch | 2 +-
.../all/rt/ftrace-migrate-disable-tracing.patch | 2 +-
.../features/all/rt/futex-requeue-pi-fix.patch | 12 +-
...default-affinity-mask-command-line-option.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 | 32 ++
...-set_cpus_allowed_ptr-in-sync_unplug_thre.patch | 2 +-
.../all/rt/hotplug-light-get-online-cpus.patch | 2 +-
...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 | 2 +-
.../all/rt/hrtimers-prepare-full-preemption.patch | 2 +-
...tor-Don-t-ignore-threshold-module-paramet.patch | 2 +-
...tor-Update-hwlat_detector-to-add-outer-lo.patch | 2 +-
...tector-Use-thread-instead-of-stop-machine.patch | 2 +-
...tector-Use-trace_clock_local-if-available.patch | 2 +-
debian/patches/features/all/rt/hwlatdetect.patch | 2 +-
.../i2c-omap-drop-the-lock-hard-irq-context.patch | 2 +-
...warning-from-i915-when-running-on-PREEMPT.patch | 2 +-
.../patches/features/all/rt/i915_compile_fix.patch | 2 +-
.../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 | 2 +-
.../all/rt/inpt-gameport-use-local-irq-nort.patch | 2 +-
.../rt/introduce_migrate_disable_cpu_light.patch | 2 +-
...-msg-Implement-lockless-pipelined-wakeups.patch | 2 +-
.../all/rt/ipc-sem-rework-semaphore-wakeups.patch | 2 +-
...-softirq-processing-in-irq-thread-context.patch | 4 +-
...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 +-
...plug-restore-original-cpu-mask-oncpu-down.patch | 2 +-
...ate_disable-do-fastpath-in-atomic-irqs-of.patch | 34 ++
...-mark-perf_cpu_context-s-timer-as-irqsafe.patch | 7 +-
.../rt/kernel-softirq-unlock-with-irqs-on.patch | 28 +
..._machine-partly-revert-stop_machine-Use-r.patch | 153 ++++++
.../features/all/rt/kgb-serial-hackaround.patch | 2 +-
debian/patches/features/all/rt/latency-hist.patch | 2 +-
.../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 +-
debian/patches/features/all/rt/lglocks-rt.patch | 2 +-
.../list_bl.h-make-list-head-locking-RT-safe.patch | 2 +-
.../all/rt/local-irq-rt-depending-variants.patch | 2 +-
debian/patches/features/all/rt/localversion.patch | 6 +-
.../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 +-
.../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 +-
.../all/rt/mm--rt--Fix-generic-kmap_atomic-for-RT | 2 +-
...dev-don-t-disable-IRQs-in-wb_congested_pu.patch | 42 ++
.../all/rt/mm-bounce-local-irq-save-nort.patch | 2 +-
.../all/rt/mm-convert-swap-to-percpu-locked.patch | 2 +-
.../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 | 2 +-
.../all/rt/mm-memcontrol-do_not_disable_irq.patch | 2 +-
...m-page-alloc-use-local-lock-on-target-cpu.patch | 2 +-
...m-page_alloc-reduce-lock-sections-further.patch | 2 +-
.../mm-page_alloc-rt-friendly-per-cpu-pages.patch | 2 +-
.../all/rt/mm-protect-activate-switch-mm.patch | 2 +-
.../all/rt/mm-rt-kmap-atomic-scheduling.patch | 2 +-
.../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 | 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 +-
...r-local-irq-disable-alloc-atomic-headache.patch | 2 +-
...cpuhotplug-drain-input_pkt_queue-lockless.patch | 2 +-
...otect-users-of-napi_alloc_cache-against-r.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 | 2 +-
.../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 +-
.../rt/net-tx-action-avoid-livelock-on-rt.patch | 2 +-
.../features/all/rt/net-use-cpu-chill.patch | 2 +-
.../features/all/rt/net-wireless-warn-nort.patch | 2 +-
...synchronize-rcu_expedited_conditional-on-non-rt | 2 +-
.../features/all/rt/oleg-signal-rt-fix.patch | 2 +-
.../all/rt/panic-disable-random-on-rt.patch | 2 +-
...troduce-rcu-bh-qs-where-safe-from-softirq.patch | 2 +-
.../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-srcu-crypto-chain.patch | 2 +-
.../features/all/rt/pid.h-include-atomic.h.patch | 2 +-
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 | 2 +-
.../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 +-
.../rt/preempt-lazy-check-preempt_schedule.patch | 2 +-
.../features/all/rt/preempt-lazy-support.patch | 2 +-
.../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 | 2 +-
.../patches/features/all/rt/printk-rt-aware.patch | 2 +-
...t-open-IRQs-in-ptrace_freeze_traced-too-e.patch | 2 +-
.../ptrace-fix-ptrace-vs-tasklist_lock-race.patch | 2 +-
.../features/all/rt/radix-tree-rt-aware.patch | 2 +-
.../all/rt/random-make-it-work-on-rt.patch | 2 +-
...Eliminate-softirq-processing-from-rcutree.patch | 12 +-
.../all/rt/rcu-disable-more-spots-of-rcu_bh.patch | 64 +++
.../all/rt/rcu-disable-rcu-fast-no-hz-on-rt.patch | 2 +-
.../all/rt/rcu-make-RCU_BOOST-default-on-RT.patch | 2 +-
.../rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch | 2 +-
.../all/rt/rcu-more-swait-conversions.patch | 16 +-
..._bh_qs-disable-irq-while-calling-rcu_pree.patch | 2 +-
...-migrate_disable-race-with-cpu-hotplug-3f.patch | 2 +-
...t_full-arm-coredump-fails-for-cpu-3e-3d-4.patch | 2 +-
.../features/all/rt/relay-fix-timer-madness.patch | 2 +-
...ping-function-called-from-invalid-context.patch | 2 +-
.../patches/features/all/rt/rt-add-rt-locks.patch | 97 ++--
.../features/all/rt/rt-introduce-cpu-chill.patch | 2 +-
.../features/all/rt/rt-local-irq-lock.patch | 2 +-
...cking-Reenable-migration-accross-schedule.patch | 112 ++++
.../features/all/rt/rt-preempt-base-config.patch | 2 +-
.../features/all/rt/rt-serial-warn-fix.patch | 2 +-
...rtmutex--Handle-non-enqueued-waiters-gracefully | 6 +-
.../all/rt/rtmutex-Make-wait_lock-irq-safe.patch | 598 +++++++++++++++++++++
.../rt/rtmutex-Use-chainwalking-control-enum.patch | 6 +-
.../rt/rtmutex-add-a-first-shot-of-ww_mutex.patch | 36 +-
.../all/rt/rtmutex-avoid-include-hell.patch | 2 +-
.../features/all/rt/rtmutex-futex-prepare-rt.patch | 26 +-
.../features/all/rt/rtmutex-lock-killable.patch | 4 +-
...sh-down-migrate_disable-into-rt_spin_lock.patch | 272 ++++++++++
.../all/rt/rtmutex-trylock-is-okay-on-RT.patch | 4 +-
.../features/all/rt/rtmutex_dont_include_rcu.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 | 2 +-
.../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 | 2 +-
...ched-provide-a-tsk_nr_cpus_allowed-helper.patch | 2 +-
.../features/all/rt/sched-rt-mutex-wakeup.patch | 2 +-
...hed-ttwu-ensure-success-return-is-correct.patch | 2 +-
...sk_cpus_allowed-instead-of-accessing-cpus.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 | 2 +-
.../features/all/rt/skbufhead-raw-lock.patch | 2 +-
.../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 | 2 +-
.../features/all/rt/softirq-split-locks.patch | 2 +-
...irq-split-timer-softirqs-out-of-ksoftirqd.patch | 14 +-
.../sparc64-use-generic-rwsem-spinlocks-rt.patch | 2 +-
.../all/rt/spinlock-types-separate-raw.patch | 2 +-
...ne-create-lg_global_trylock_relax-primiti.patch | 4 +-
...ne-use-lg_global_trylock_relax-to-dead-wi.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 +-
.../rt/tasklist-lock-fix-section-conflict.patch | 2 +-
.../thermal-Defer-thermal-wakups-to-threads.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 +-
...s-avoid-the-base-null-otptimization-on-rt.patch | 2 +-
.../all/rt/timers-preempt-rt-support.patch | 2 +-
.../rt/timers-prepare-for-full-preemption.patch | 2 +-
...cy-hist-Consider-new-argument-when-probin.patch | 2 +-
...count-for-preempt-off-in-preempt_schedule.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 +-
.../all/rt/vtime-split-lock-and-seqcount.patch | 2 +-
.../all/rt/wait-simple-implementation.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 +-
...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 | 2 +-
.../features/all/rt/x86-mce-timer-hrtimer.patch | 2 +-
.../x86-mce-use-swait-queue-for-mce-wakeups.patch | 2 +-
.../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 | 12 +
282 files changed, 1884 insertions(+), 383 deletions(-)
diff --git a/debian/changelog b/debian/changelog
index 0d5754e..58bda17 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -29,6 +29,9 @@ linux (4.4.1-1) UNRELEASED; urgency=medium
[ Roger Shimizu ]
* Enable TTY_PRINTK as module (Closes: #814540).
+ [ Uwe Kleine-König ]
+ * [rt] Update to 4.4.1-rt6
+
-- Ben Hutchings <ben at decadent.org.uk> Fri, 12 Feb 2016 23:34:23 +0000
linux (4.4.1-1~exp1) experimental; urgency=medium
diff --git a/debian/patches/features/all/rt/0005-futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch b/debian/patches/features/all/rt/0005-futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch
index 9f5e333..afb6dfa 100644
--- a/debian/patches/features/all/rt/0005-futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch
+++ b/debian/patches/features/all/rt/0005-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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
In exit_pi_state_list() we have the following locking construct:
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 0f260d5..8016464 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 89b0fbe..b682b58 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
new file mode 100644
index 0000000..c36ca32
--- /dev/null
+++ b/debian/patches/features/all/rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch
@@ -0,0 +1,59 @@
+From bdf6fc2d467f0db2122b1010106542dbc7a8398c Mon Sep 17 00:00:00 2001
+From: Josh Cartwright <joshc at ni.com>
+Date: Thu, 11 Feb 2016 11:54:01 -0600
+Subject: [PATCH 2/2] KVM: arm/arm64: downgrade preempt_disable()d region to
+ migrate_disable()
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
+another CPU. It does so to prevent the task from writing to the
+incorrect per-CPU GIC distributor registers.
+
+On -rt kernels, it's possible to maintain the same guarantee with the
+use of migrate_{disable,enable}(), with the added benefit that the
+migrate-disabled region is preemptible. Update
+kvm_arch_vcpu_ioctl_run() to do so.
+
+Cc: Christoffer Dall <christoffer.dall at linaro.org>
+Reported-by: Manish Jaggi <Manish.Jaggi at caviumnetworks.com>
+Signed-off-by: Josh Cartwright <joshc at ni.com>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ arch/arm/kvm/arm.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
+index 4f5c42a0924c..2ce9cc2717ac 100644
+--- a/arch/arm/kvm/arm.c
++++ b/arch/arm/kvm/arm.c
+@@ -568,7 +568,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
+ * involves poking the GIC, which must be done in a
+ * non-preemptible context.
+ */
+- preempt_disable();
++ migrate_disable();
+ kvm_timer_flush_hwstate(vcpu);
+ kvm_vgic_flush_hwstate(vcpu);
+
+@@ -587,7 +587,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
+ local_irq_enable();
+ kvm_timer_sync_hwstate(vcpu);
+ kvm_vgic_sync_hwstate(vcpu);
+- preempt_enable();
++ migrate_enable();
+ continue;
+ }
+
+@@ -641,7 +641,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
+
+ kvm_vgic_sync_hwstate(vcpu);
+
+- preempt_enable();
++ migrate_enable();
+
+ ret = handle_exit(vcpu, run, ret);
+ }
+--
+2.7.0
+
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 ec96527..2ba1561 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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/KVM-use-simple-waitqueue-for-vcpu-wq.patch b/debian/patches/features/all/rt/KVM-use-simple-waitqueue-for-vcpu-wq.patch
index f7a4bff..952b8a8 100644
--- a/debian/patches/features/all/rt/KVM-use-simple-waitqueue-for-vcpu-wq.patch
+++ b/debian/patches/features/all/rt/KVM-use-simple-waitqueue-for-vcpu-wq.patch
@@ -1,7 +1,7 @@
From: Marcelo Tosatti <mtosatti at redhat.com>
Date: Wed, 8 Apr 2015 20:33:24 -0300
Subject: KVM: use simple waitqueue for vcpu->wq
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
The problem:
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 8a9e17b..9f7ab80 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 23c3e0a..96f4bab 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-arm64-lazy-preempt-add-TIF_NEED_RESCHED_LAZY-to-.patch b/debian/patches/features/all/rt/arm-arm64-lazy-preempt-add-TIF_NEED_RESCHED_LAZY-to-.patch
index b45f445..7acd1e2 100644
--- a/debian/patches/features/all/rt/arm-arm64-lazy-preempt-add-TIF_NEED_RESCHED_LAZY-to-.patch
+++ b/debian/patches/features/all/rt/arm-arm64-lazy-preempt-add-TIF_NEED_RESCHED_LAZY-to-.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 22 Jan 2016 21:33:39 +0100
Subject: arm+arm64: lazy-preempt: add TIF_NEED_RESCHED_LAZY to _TIF_WORK_MASK
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
_TIF_WORK_MASK is used to check for TIF_NEED_RESCHED so we need to check
for TIF_NEED_RESCHED_LAZY here, too.
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 0f3ecd9..65b425c 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 a93a22a..0b47157 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 34643c7..4c725c7 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 b3c95d0..2f9b5f9 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 402ecba..3ff18ed 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-preempt-lazy-support.patch b/debian/patches/features/all/rt/arm-preempt-lazy-support.patch
index b446f91..d90f9c3 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 5c3911b..f6e2cf3 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-replace-read_lock-to-rcu-lock-in-call_step_hoo.patch b/debian/patches/features/all/rt/arm64-replace-read_lock-to-rcu-lock-in-call_step_hoo.patch
new file mode 100644
index 0000000..1c81501
--- /dev/null
+++ b/debian/patches/features/all/rt/arm64-replace-read_lock-to-rcu-lock-in-call_step_hoo.patch
@@ -0,0 +1,94 @@
+From: Yang Shi <yang.shi at linaro.org>
+Date: Mon, 8 Feb 2016 14:49:24 -0800
+Subject: arm64: replace read_lock to rcu lock in call_step_hook
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
+
+BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:917
+in_atomic(): 1, irqs_disabled(): 128, pid: 383, name: sh
+Preemption disabled at:[<ffff800000124c18>] kgdb_cpu_enter+0x158/0x6b8
+
+CPU: 3 PID: 383 Comm: sh Tainted: G W 4.1.13-rt13 #2
+Hardware name: Freescale Layerscape 2085a RDB Board (DT)
+Call trace:
+[<ffff8000000885e8>] dump_backtrace+0x0/0x128
+[<ffff800000088734>] show_stack+0x24/0x30
+[<ffff80000079a7c4>] dump_stack+0x80/0xa0
+[<ffff8000000bd324>] ___might_sleep+0x18c/0x1a0
+[<ffff8000007a20ac>] __rt_spin_lock+0x2c/0x40
+[<ffff8000007a2268>] rt_read_lock+0x40/0x58
+[<ffff800000085328>] single_step_handler+0x38/0xd8
+[<ffff800000082368>] do_debug_exception+0x58/0xb8
+Exception stack(0xffff80834a1e7c80 to 0xffff80834a1e7da0)
+7c80: ffffff9c ffffffff 92c23ba0 0000ffff 4a1e7e40 ffff8083 001bfcc4 ffff8000
+7ca0: f2000400 00000000 00000000 00000000 4a1e7d80 ffff8083 0049501c ffff8000
+7cc0: 00005402 00000000 00aaa210 ffff8000 4a1e7ea0 ffff8083 000833f4 ffff8000
+7ce0: ffffff9c ffffffff 92c23ba0 0000ffff 4a1e7ea0 ffff8083 001bfcc0 ffff8000
+7d00: 4a0fc400 ffff8083 00005402 00000000 4a1e7d40 ffff8083 00490324 ffff8000
+7d20: ffffff9c 00000000 92c23ba0 0000ffff 000a0000 00000000 00000000 00000000
+7d40: 00000008 00000000 00080000 00000000 92c23b8b 0000ffff 92c23b8e 0000ffff
+7d60: 00000038 00000000 00001cb2 00000000 00000005 00000000 92d7b498 0000ffff
+7d80: 01010101 01010101 92be9000 0000ffff 00000000 00000000 00000030 00000000
+[<ffff8000000833f4>] el1_dbg+0x18/0x6c
+
+This issue is similar with 62c6c61("arm64: replace read_lock to rcu lock in
+call_break_hook"), but comes to single_step_handler.
+
+This also solves kgdbts boot test silent hang issue on 4.4 -rt kernel.
+
+Cc: stable-rt at vger.kernel.org
+Signed-off-by: Yang Shi <yang.shi at linaro.org>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ arch/arm64/kernel/debug-monitors.c | 21 +++++++++++----------
+ 1 file changed, 11 insertions(+), 10 deletions(-)
+
+--- a/arch/arm64/kernel/debug-monitors.c
++++ b/arch/arm64/kernel/debug-monitors.c
+@@ -186,20 +186,21 @@ static void clear_regs_spsr_ss(struct pt
+
+ /* EL1 Single Step Handler hooks */
+ static LIST_HEAD(step_hook);
+-static DEFINE_RWLOCK(step_hook_lock);
++static DEFINE_SPINLOCK(step_hook_lock);
+
+ void register_step_hook(struct step_hook *hook)
+ {
+- write_lock(&step_hook_lock);
+- list_add(&hook->node, &step_hook);
+- write_unlock(&step_hook_lock);
++ spin_lock(&step_hook_lock);
++ list_add_rcu(&hook->node, &step_hook);
++ spin_unlock(&step_hook_lock);
+ }
+
+ void unregister_step_hook(struct step_hook *hook)
+ {
+- write_lock(&step_hook_lock);
+- list_del(&hook->node);
+- write_unlock(&step_hook_lock);
++ spin_lock(&step_hook_lock);
++ list_del_rcu(&hook->node);
++ spin_unlock(&step_hook_lock);
++ synchronize_rcu();
+ }
+
+ /*
+@@ -213,15 +214,15 @@ static int call_step_hook(struct pt_regs
+ struct step_hook *hook;
+ int retval = DBG_HOOK_ERROR;
+
+- read_lock(&step_hook_lock);
++ rcu_read_lock();
+
+- list_for_each_entry(hook, &step_hook, node) {
++ list_for_each_entry_rcu(hook, &step_hook, node) {
+ retval = hook->fn(regs, esr);
+ if (retval == DBG_HOOK_HANDLED)
+ break;
+ }
+
+- read_unlock(&step_hook_lock);
++ rcu_read_unlock();
+
+ return retval;
+ }
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 7fdde71..9506d13 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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/ata-disable-interrupts-if-non-rt.patch b/debian/patches/features/all/rt/ata-disable-interrupts-if-non-rt.patch
index 4ea55e6..b66c7ee 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Use the local_irq_*_nort variants.
diff --git a/debian/patches/features/all/rt/blk-mq-revert-raw-locks-post-pone-notifier-to-POST_D.patchto-POST_D.patch b/debian/patches/features/all/rt/blk-mq-revert-raw-locks-post-pone-notifier-to-POST_D.patchto-POST_D.patch
index 2eeebda..f2df294 100644
--- a/debian/patches/features/all/rt/blk-mq-revert-raw-locks-post-pone-notifier-to-POST_D.patchto-POST_D.patch
+++ b/debian/patches/features/all/rt/blk-mq-revert-raw-locks-post-pone-notifier-to-POST_D.patchto-POST_D.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Sat, 3 May 2014 11:00:29 +0200
Subject: blk-mq: revert raw locks, post pone notifier to POST_DEAD
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
The blk_mq_cpu_notify_lock should be raw because some CPU down levels
are called with interrupts off. The notifier itself calls currently one
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 4b399c9..00fd2bc 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 6b14f98..a1e8e11 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-per-ctx-cpu_lock.patch b/debian/patches/features/all/rt/block-mq-drop-per-ctx-cpu_lock.patch
index fc569fe..1ec7e5f 100644
--- a/debian/patches/features/all/rt/block-mq-drop-per-ctx-cpu_lock.patch
+++ b/debian/patches/features/all/rt/block-mq-drop-per-ctx-cpu_lock.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 18 Feb 2015 18:37:26 +0100
Subject: block/mq: drop per ctx cpu_lock
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
While converting the get_cpu() to get_cpu_light() I added a cpu lock to
ensure the same code is not invoked twice on the same CPU. And now I run
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 ba05f75..fc07467 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
preempt_disable() and get_cpu() don't play well together with the sleeping
locks it tries to allocate later.
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 275fec6..522c889 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 963e762..738f962 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 ec52d61..1b60651 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-initialize-the-seq-counter-in-struct-btrfs_dev.patch b/debian/patches/features/all/rt/btrfs-initialize-the-seq-counter-in-struct-btrfs_dev.patch
index 243b5be..c58058b 100644
--- a/debian/patches/features/all/rt/btrfs-initialize-the-seq-counter-in-struct-btrfs_dev.patch
+++ b/debian/patches/features/all/rt/btrfs-initialize-the-seq-counter-in-struct-btrfs_dev.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 15 Jan 2016 14:28:39 +0100
Subject: btrfs: initialize the seq counter in struct btrfs_device
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
I managed to trigger this:
| INFO: trying to register non-static key.
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 304b81a..71e9f66 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 061fedd..47e64c9 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
mm, memcg: make refill_stock() use get_cpu_light()
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 c781ba2..196f7a9 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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/clocksource-tclib-allow-higher-clockrates.patch b/debian/patches/features/all/rt/clocksource-tclib-allow-higher-clockrates.patch
index 27602da..207a616 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 34d9ff4..73bae4a 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 a04522f..523eaff 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 e1095db..48c58ba 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
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 7754cd3..7f7728f 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 c39b5ee..e70b5c0 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 775c685..0a9d35f 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
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 8d05111..2fe9409 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 11d3172..51390c2 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 b5276e6..6965bcc 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 c7cfc2a..8832ea9 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
We can't deal with the cpumask allocations which happen in atomic
context (see arch/x86/kernel/apic/io_apic.c) on RT right now.
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 1e78d9e..bffb28b 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 75000bf..647d0c2 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 5ad1d0e..395cbf9 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
diff --git a/debian/patches/features/all/rt/drivers-cpuidle-coupled-fix-warning-cpuidle_coupled_.patch b/debian/patches/features/all/rt/drivers-cpuidle-coupled-fix-warning-cpuidle_coupled_.patch
index e125a77..f691da4 100644
--- a/debian/patches/features/all/rt/drivers-cpuidle-coupled-fix-warning-cpuidle_coupled_.patch
+++ b/debian/patches/features/all/rt/drivers-cpuidle-coupled-fix-warning-cpuidle_coupled_.patch
@@ -1,7 +1,7 @@
From: Anders Roxell <anders.roxell at linaro.org>
Date: Fri, 15 Jan 2016 20:21:12 +0100
Subject: drivers/cpuidle: coupled: fix warning cpuidle_coupled_lock
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Used multi_v7_defconfig+PREEMPT_RT_FULL=y and this caused a compilation
warning without this fix:
diff --git a/debian/patches/features/all/rt/drivers-media-vsp1_video-fix-compile-error.patch b/debian/patches/features/all/rt/drivers-media-vsp1_video-fix-compile-error.patch
index 654eee7..568a7bd 100644
--- a/debian/patches/features/all/rt/drivers-media-vsp1_video-fix-compile-error.patch
+++ b/debian/patches/features/all/rt/drivers-media-vsp1_video-fix-compile-error.patch
@@ -1,7 +1,7 @@
From: Anders Roxell <anders.roxell at linaro.org>
Date: Fri, 15 Jan 2016 01:09:43 +0100
Subject: drivers/media: vsp1_video: fix compile error
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
This was found with the -RT patch enabled, but the fix should apply to
non-RT also.
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 38804ec..316100d 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-fix-livelock-issues.patch b/debian/patches/features/all/rt/drivers-net-fix-livelock-issues.patch
index eea7350..07ae3ce 100644
--- a/debian/patches/features/all/rt/drivers-net-fix-livelock-issues.patch
+++ b/debian/patches/features/all/rt/drivers-net-fix-livelock-issues.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Sat, 20 Jun 2009 11:36:54 +0200
Subject: drivers/net: fix livelock issues
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Preempt-RT runs into a live lock issue with the NETDEV_TX_LOCKED micro
optimization. The reason is that the softirq thread is rescheduling
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 61a7e57..2109b33 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 ec05dc1..df1afe2 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 76f85f3..cf814a6 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 64e2423..688fdfd 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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/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 6a9cc85..c1dbfdd 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
This tracepoint is responsible for:
diff --git a/debian/patches/features/all/rt/dump-stack-don-t-disable-preemption-during-trace.patch b/debian/patches/features/all/rt/dump-stack-don-t-disable-preemption-during-trace.patch
index 37ad874..c2e8286 100644
--- a/debian/patches/features/all/rt/dump-stack-don-t-disable-preemption-during-trace.patch
+++ b/debian/patches/features/all/rt/dump-stack-don-t-disable-preemption-during-trace.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Sun, 16 Aug 2015 14:27:50 +0200
Subject: dump stack: don't disable preemption during trace
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
I see here large latencies during a stack dump on x86. The
preempt_disable() and get_cpu() should forbid moving the task to another
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 087c4ec..2b20c09 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 cff5913..d20de97 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 1d2d3dd..4112c78 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-use-cpu-chill-in-trylock-loops.patch b/debian/patches/features/all/rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch
index 08688be..f7adc96 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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/fs-jbd-replace-bh_state-lock.patch b/debian/patches/features/all/rt/fs-jbd-replace-bh_state-lock.patch
index 0b6b54b..8b0b4a1 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 e384902..d27618c 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 d7d5b30..d472476 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-ntfs-disable-interrupt-non-rt.patch b/debian/patches/features/all/rt/fs-ntfs-disable-interrupt-non-rt.patch
index 6b62650..68fec29 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 c86b24b..a7bcabe 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-migrate-disable-tracing.patch b/debian/patches/features/all/rt/ftrace-migrate-disable-tracing.patch
index 199e307..67456a8 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
---
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 d775677..b6cbc1d 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Requeue with timeout causes a bug with PREEMPT_RT_FULL.
@@ -66,7 +66,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
/*
-@@ -1631,6 +1632,35 @@ int rt_mutex_start_proxy_lock(struct rt_
+@@ -1640,6 +1641,35 @@ int rt_mutex_start_proxy_lock(struct rt_
return 1;
}
@@ -89,14 +89,14 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+ * PI_REQUEUE_INPROGRESS, so that if the task is waking up
+ * it will know that we are in the process of requeuing it.
+ */
-+ raw_spin_lock_irq(&task->pi_lock);
++ raw_spin_lock(&task->pi_lock);
+ if (task->pi_blocked_on) {
-+ raw_spin_unlock_irq(&task->pi_lock);
-+ raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock(&task->pi_lock);
++ raw_spin_unlock_irq(&lock->wait_lock);
+ return -EAGAIN;
+ }
+ task->pi_blocked_on = PI_REQUEUE_INPROGRESS;
-+ raw_spin_unlock_irq(&task->pi_lock);
++ raw_spin_unlock(&task->pi_lock);
+#endif
+
/* We enforce deadlock detection for futexes */
diff --git a/debian/patches/features/all/rt/genirq-Add-default-affinity-mask-command-line-option.patch b/debian/patches/features/all/rt/genirq-Add-default-affinity-mask-command-line-option.patch
index 4314204..0b70e72 100644
--- a/debian/patches/features/all/rt/genirq-Add-default-affinity-mask-command-line-option.patch
+++ b/debian/patches/features/all/rt/genirq-Add-default-affinity-mask-command-line-option.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Fri, 25 May 2012 16:59:47 +0200
Subject: genirq: Add default affinity mask command line option
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
If we isolate CPUs, then we don't want random device interrupts on them. Even
w/o the user space irq balancer enabled we can end up with irqs on non boot
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 a683d8a..4dba41c 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 32d608e..716aabf 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 8ad3984..f887afd 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
new file mode 100644
index 0000000..0f5642f
--- /dev/null
+++ b/debian/patches/features/all/rt/genirq-update-irq_set_irqchip_state-documentation.patch
@@ -0,0 +1,32 @@
+From 85b7f1606fb707c9da7984e052e47cfa12e85e67 Mon Sep 17 00:00:00 2001
+From: Josh Cartwright <joshc at ni.com>
+Date: Thu, 11 Feb 2016 11:54:00 -0600
+Subject: [PATCH 1/2] genirq: update irq_set_irqchip_state documentation
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
+irq_set_irqchip_state() documentation to reflect this.
+
+Signed-off-by: Josh Cartwright <joshc at ni.com>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ kernel/irq/manage.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
+index ba2a42a37025..8e89554aa345 100644
+--- a/kernel/irq/manage.c
++++ b/kernel/irq/manage.c
+@@ -2060,7 +2060,7 @@ EXPORT_SYMBOL_GPL(irq_get_irqchip_state);
+ * This call sets the internal irqchip state of an interrupt,
+ * depending on the value of @which.
+ *
+- * This function should be called with preemption disabled if the
++ * This function should be called with migration disabled if the
+ * interrupt controller has per-cpu registers.
+ */
+ int irq_set_irqchip_state(unsigned int irq, enum irqchip_irq_state which,
+--
+2.7.0
+
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 a6d192a..a21c970 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 686aef6..74d9662 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
get_online_cpus() is a heavy weight function which involves a global
mutex. migrate_disable() wants a simpler construct which prevents only
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 cfad64c..5ec6a24 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 ac9d1a5..6f2db03 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 e17cce4..2dbc28a 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 9ceb5ae..ca16967 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 ef2f16b..c72f4d7 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
In preempt-rt we can not call the callbacks which take sleeping locks
from the timer interrupt context.
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 92927cd..860fcbc 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Make cancellation of a running callback in softirq context safe
against preemption.
diff --git a/debian/patches/features/all/rt/hwlat-detector-Don-t-ignore-threshold-module-paramet.patch b/debian/patches/features/all/rt/hwlat-detector-Don-t-ignore-threshold-module-paramet.patch
index 73882a3..6488fe7 100644
--- a/debian/patches/features/all/rt/hwlat-detector-Don-t-ignore-threshold-module-paramet.patch
+++ b/debian/patches/features/all/rt/hwlat-detector-Don-t-ignore-threshold-module-paramet.patch
@@ -1,7 +1,7 @@
From: Mike Galbraith <bitbucket at online.de>
Date: Fri, 30 Aug 2013 07:57:25 +0200
Subject: hwlat-detector: Don't ignore threshold module parameter
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
If the user specified a threshold at module load time, use it.
diff --git a/debian/patches/features/all/rt/hwlat-detector-Update-hwlat_detector-to-add-outer-lo.patch b/debian/patches/features/all/rt/hwlat-detector-Update-hwlat_detector-to-add-outer-lo.patch
index fc30973..e7d99ff 100644
--- a/debian/patches/features/all/rt/hwlat-detector-Update-hwlat_detector-to-add-outer-lo.patch
+++ b/debian/patches/features/all/rt/hwlat-detector-Update-hwlat_detector-to-add-outer-lo.patch
@@ -1,7 +1,7 @@
From: Steven Rostedt <rostedt at goodmis.org>
Date: Mon, 19 Aug 2013 17:33:25 -0400
Subject: hwlat-detector: Update hwlat_detector to add outer loop detection
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
The hwlat_detector reads two timestamps in a row, then reports any
gap between those calls. The problem is, it misses everything between
diff --git a/debian/patches/features/all/rt/hwlat-detector-Use-thread-instead-of-stop-machine.patch b/debian/patches/features/all/rt/hwlat-detector-Use-thread-instead-of-stop-machine.patch
index 3689dcb..d76ea70 100644
--- a/debian/patches/features/all/rt/hwlat-detector-Use-thread-instead-of-stop-machine.patch
+++ b/debian/patches/features/all/rt/hwlat-detector-Use-thread-instead-of-stop-machine.patch
@@ -1,7 +1,7 @@
From: Steven Rostedt <rostedt at goodmis.org>
Date: Mon, 19 Aug 2013 17:33:27 -0400
Subject: hwlat-detector: Use thread instead of stop machine
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
There's no reason to use stop machine to search for hardware latency.
Simply disabling interrupts while running the loop will do enough to
diff --git a/debian/patches/features/all/rt/hwlat-detector-Use-trace_clock_local-if-available.patch b/debian/patches/features/all/rt/hwlat-detector-Use-trace_clock_local-if-available.patch
index 7acf5e5..47e2c39 100644
--- a/debian/patches/features/all/rt/hwlat-detector-Use-trace_clock_local-if-available.patch
+++ b/debian/patches/features/all/rt/hwlat-detector-Use-trace_clock_local-if-available.patch
@@ -1,7 +1,7 @@
From: Steven Rostedt <rostedt at goodmis.org>
Date: Mon, 19 Aug 2013 17:33:26 -0400
Subject: hwlat-detector: Use trace_clock_local if available
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
As ktime_get() calls into the timing code which does a read_seq(), it
may be affected by other CPUS that touch that lock. To remove this
diff --git a/debian/patches/features/all/rt/hwlatdetect.patch b/debian/patches/features/all/rt/hwlatdetect.patch
index ac3fe54..6cb117e 100644
--- a/debian/patches/features/all/rt/hwlatdetect.patch
+++ b/debian/patches/features/all/rt/hwlatdetect.patch
@@ -1,7 +1,7 @@
Subject: hwlatdetect.patch
From: Carsten Emde <C.Emde at osadl.org>
Date: Tue, 19 Jul 2011 13:53:12 +0100
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Jon Masters developed this wonderful SMI detector. For details please
consult Documentation/hwlat_detector.txt. It could be ported to Linux
diff --git a/debian/patches/features/all/rt/i2c-omap-drop-the-lock-hard-irq-context.patch b/debian/patches/features/all/rt/i2c-omap-drop-the-lock-hard-irq-context.patch
index 83a0348..797bca2 100644
--- a/debian/patches/features/all/rt/i2c-omap-drop-the-lock-hard-irq-context.patch
+++ b/debian/patches/features/all/rt/i2c-omap-drop-the-lock-hard-irq-context.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Thu, 21 Mar 2013 11:35:49 +0100
Subject: i2c/omap: drop the lock hard irq context
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
The lock is taken while reading two registers. On RT the first lock is
taken in hard irq where it might sleep and in the threaded irq.
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 cdaef85..0f717db 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
diff --git a/debian/patches/features/all/rt/i915_compile_fix.patch b/debian/patches/features/all/rt/i915_compile_fix.patch
index 2cd234a..75feb68 100644
--- a/debian/patches/features/all/rt/i915_compile_fix.patch
+++ b/debian/patches/features/all/rt/i915_compile_fix.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Tue, 14 Jul 2015 14:26:34 +0200
Subject: gpu/i915: don't open code these things
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
The opencode part is gone in 1f83fee0 ("drm/i915: clear up wedged transitions")
the owner check is still there.
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 bac0c1c..8ce7dfc 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 45124b9..7cec2f7 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 70eeab4..b629261 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Fixes in_atomic stack-dump, when Mellanox module is loaded into the RT
Kernel.
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 eeac412..0bbf739 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 7e4c4f4..890f29a 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Introduce migrate_disable(). The task can't be pushed to another CPU but can
be preempted.
diff --git a/debian/patches/features/all/rt/ipc-msg-Implement-lockless-pipelined-wakeups.patch b/debian/patches/features/all/rt/ipc-msg-Implement-lockless-pipelined-wakeups.patch
index ec8af0e..334c606 100644
--- a/debian/patches/features/all/rt/ipc-msg-Implement-lockless-pipelined-wakeups.patch
+++ b/debian/patches/features/all/rt/ipc-msg-Implement-lockless-pipelined-wakeups.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 30 Oct 2015 11:59:07 +0100
Subject: ipc/msg: Implement lockless pipelined wakeups
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
This patch moves the wakeup_process() invocation so it is not done under
the perm->lock by making use of a lockless wake_q. With this change, the
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 d4db346..ab8a8c2 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 1d0838d..31f1e67 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
@@ -129,7 +129,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
return desc->status_use_accessors & _IRQ_PER_CPU;
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
-@@ -576,6 +576,15 @@ void __local_bh_enable(void)
+@@ -578,6 +578,15 @@ void __local_bh_enable(void)
}
EXPORT_SYMBOL(__local_bh_enable);
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 14720b8..d3fc732 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 b416f20..cbc5691 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 ca0ef11..b5e8638 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 a97425b..cb6de25 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 7c44ed1..8aa11e1 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 4a590af..af8c01e 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 a95325d..741d8c4 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-hotplug-restore-original-cpu-mask-oncpu-down.patch b/debian/patches/features/all/rt/kernel-hotplug-restore-original-cpu-mask-oncpu-down.patch
index 3458fae..f7e9d8b 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
new file mode 100644
index 0000000..7bee605
--- /dev/null
+++ b/debian/patches/features/all/rt/kernel-migrate_disable-do-fastpath-in-atomic-irqs-of.patch
@@ -0,0 +1,34 @@
+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/4.4/patches-4.4.1-rt6.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.
+
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ kernel/sched/core.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/kernel/sched/core.c
++++ b/kernel/sched/core.c
+@@ -3078,7 +3078,7 @@ void migrate_disable(void)
+ {
+ struct task_struct *p = current;
+
+- if (in_atomic()) {
++ if (in_atomic() || irqs_disabled()) {
+ #ifdef CONFIG_SCHED_DEBUG
+ p->migrate_disable_atomic++;
+ #endif
+@@ -3105,7 +3105,7 @@ void migrate_enable(void)
+ {
+ struct task_struct *p = current;
+
+- if (in_atomic()) {
++ if (in_atomic() || irqs_disabled()) {
+ #ifdef CONFIG_SCHED_DEBUG
+ p->migrate_disable_atomic--;
+ #endif
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 afa8e80..259b5b5 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Otherwise we get a WARN_ON() backtrace and some events are reported as
"not counted".
@@ -10,13 +10,12 @@ Cc: stable-rt at vger.kernel.org
Reported-by: Yang Shi <yang.shi at linaro.org>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
---
- kernel/events/core.c | 1 +
+ kernel/events/core.c | 1 +
1 file changed, 1 insertion(+)
-diff --git a/kernel/events/core.c b/kernel/events/core.c
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
-@@ -802,6 +802,7 @@ static void __perf_mux_hrtimer_init(struct perf_cpu_context *cpuctx, int cpu)
+@@ -802,6 +802,7 @@ static void __perf_mux_hrtimer_init(stru
raw_spin_lock_init(&cpuctx->hrtimer_lock);
hrtimer_init(timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_PINNED);
timer->function = perf_mux_hrtimer_handler;
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
new file mode 100644
index 0000000..0fcd337
--- /dev/null
+++ b/debian/patches/features/all/rt/kernel-softirq-unlock-with-irqs-on.patch
@@ -0,0 +1,28 @@
+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/4.4/patches-4.4.1-rt6.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
+symmetrical in regard to the status of interrupts.
+
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ kernel/softirq.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- a/kernel/softirq.c
++++ b/kernel/softirq.c
+@@ -549,8 +549,10 @@ static void do_current_softirqs(void)
+ do_single_softirq(i);
+ }
+ softirq_clr_runner(i);
+- unlock_softirq(i);
+ WARN_ON(current->softirq_nestcnt != 1);
++ local_irq_enable();
++ unlock_softirq(i);
++ local_irq_disable();
+ }
+ }
+
diff --git a/debian/patches/features/all/rt/kernel-stop_machine-partly-revert-stop_machine-Use-r.patch b/debian/patches/features/all/rt/kernel-stop_machine-partly-revert-stop_machine-Use-r.patch
new file mode 100644
index 0000000..bc1f15f
--- /dev/null
+++ b/debian/patches/features/all/rt/kernel-stop_machine-partly-revert-stop_machine-Use-r.patch
@@ -0,0 +1,153 @@
+From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+Date: Wed, 10 Feb 2016 18:25:16 +0100
+Subject: kernel/stop_machine: partly revert "stop_machine: Use raw
+ spinlocks"
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
+
+With completion using swait and so rawlocks we don't need this anymore.
+Further, bisect thinks this patch is responsible for:
+
+|BUG: unable to handle kernel NULL pointer dereference at (null)
+|IP: [<ffffffff81082123>] sched_cpu_active+0x53/0x70
+|PGD 0
+|Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
+|Dumping ftrace buffer:
+| (ftrace buffer empty)
+|Modules linked in:
+|CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.4.1+ #330
+|Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS Debian-1.8.2-1 04/01/2014
+|task: ffff88013ae64b00 ti: ffff88013ae74000 task.ti: ffff88013ae74000
+|RIP: 0010:[<ffffffff81082123>] [<ffffffff81082123>] sched_cpu_active+0x53/0x70
+|RSP: 0000:ffff88013ae77eb8 EFLAGS: 00010082
+|RAX: 0000000000000001 RBX: ffffffff81c2cf20 RCX: 0000001050fb52fb
+|RDX: 0000001050fb52fb RSI: 000000105117ca1e RDI: 00000000001c7723
+|RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
+|R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff
+|R13: ffffffff81c2cee0 R14: 0000000000000000 R15: 0000000000000001
+|FS: 0000000000000000(0000) GS:ffff88013b200000(0000) knlGS:0000000000000000
+|CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
+|CR2: 0000000000000000 CR3: 0000000001c09000 CR4: 00000000000006e0
+|Stack:
+| ffffffff810c446d ffff88013ae77f00 ffffffff8107d8dd 000000000000000a
+| 0000000000000001 0000000000000000 0000000000000000 0000000000000000
+| 0000000000000000 ffff88013ae77f10 ffffffff8107d90e ffff88013ae77f20
+|Call Trace:
+| [<ffffffff810c446d>] ? debug_lockdep_rcu_enabled+0x1d/0x20
+| [<ffffffff8107d8dd>] ? notifier_call_chain+0x5d/0x80
+| [<ffffffff8107d90e>] ? __raw_notifier_call_chain+0xe/0x10
+| [<ffffffff810598a3>] ? cpu_notify+0x23/0x40
+| [<ffffffff8105a7b8>] ? notify_cpu_starting+0x28/0x30
+
+during hotplug. The rawlocks need to remain however.
+
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ kernel/stop_machine.c | 40 ++++++++--------------------------------
+ 1 file changed, 8 insertions(+), 32 deletions(-)
+
+--- a/kernel/stop_machine.c
++++ b/kernel/stop_machine.c
+@@ -30,7 +30,7 @@ struct cpu_stop_done {
+ atomic_t nr_todo; /* nr left to execute */
+ bool executed; /* actually executed? */
+ int ret; /* collected return value */
+- struct task_struct *waiter; /* woken when nr_todo reaches 0 */
++ struct completion completion; /* fired if nr_todo reaches 0 */
+ };
+
+ /* the actual stopper, one per every possible cpu, enabled on online cpus */
+@@ -59,7 +59,7 @@ static void cpu_stop_init_done(struct cp
+ {
+ memset(done, 0, sizeof(*done));
+ atomic_set(&done->nr_todo, nr_todo);
+- done->waiter = current;
++ init_completion(&done->completion);
+ }
+
+ /* signal completion unless @done is NULL */
+@@ -68,10 +68,8 @@ static void cpu_stop_signal_done(struct
+ if (done) {
+ if (executed)
+ done->executed = true;
+- if (atomic_dec_and_test(&done->nr_todo)) {
+- wake_up_process(done->waiter);
+- done->waiter = NULL;
+- }
++ if (atomic_dec_and_test(&done->nr_todo))
++ complete(&done->completion);
+ }
+ }
+
+@@ -96,22 +94,6 @@ static void cpu_stop_queue_work(unsigned
+ raw_spin_unlock_irqrestore(&stopper->lock, flags);
+ }
+
+-static void wait_for_stop_done(struct cpu_stop_done *done)
+-{
+- set_current_state(TASK_UNINTERRUPTIBLE);
+- while (atomic_read(&done->nr_todo)) {
+- schedule();
+- set_current_state(TASK_UNINTERRUPTIBLE);
+- }
+- /*
+- * We need to wait until cpu_stop_signal_done() has cleared
+- * done->waiter.
+- */
+- while (done->waiter)
+- cpu_relax();
+- set_current_state(TASK_RUNNING);
+-}
+-
+ /**
+ * stop_one_cpu - stop a cpu
+ * @cpu: cpu to stop
+@@ -143,7 +125,7 @@ int stop_one_cpu(unsigned int cpu, cpu_s
+
+ cpu_stop_init_done(&done, 1);
+ cpu_stop_queue_work(cpu, &work);
+- wait_for_stop_done(&done);
++ wait_for_completion(&done.completion);
+ return done.executed ? done.ret : -ENOENT;
+ }
+
+@@ -302,7 +284,7 @@ int stop_two_cpus(unsigned int cpu1, uns
+
+ preempt_enable_nort();
+
+- wait_for_stop_done(&done);
++ wait_for_completion(&done.completion);
+
+ return done.executed ? done.ret : -ENOENT;
+ }
+@@ -364,7 +346,7 @@ static int __stop_cpus(const struct cpum
+
+ cpu_stop_init_done(&done, cpumask_weight(cpumask));
+ queue_stop_cpus_work(cpumask, fn, arg, &done, false);
+- wait_for_stop_done(&done);
++ wait_for_completion(&done.completion);
+ return done.executed ? done.ret : -ENOENT;
+ }
+
+@@ -495,13 +477,7 @@ static void cpu_stopper_thread(unsigned
+ kallsyms_lookup((unsigned long)fn, NULL, NULL, NULL,
+ ksym_buf), arg);
+
+- /*
+- * Make sure that the wakeup and setting done->waiter
+- * to NULL is atomic.
+- */
+- local_irq_disable();
+ cpu_stop_signal_done(done, true);
+- local_irq_enable();
+ goto repeat;
+ }
+ }
+@@ -663,7 +639,7 @@ int stop_machine_from_inactive_cpu(cpu_s
+ ret = multi_cpu_stop(&msdata);
+
+ /* Busy wait for completion. */
+- while (atomic_read(&done.nr_todo))
++ while (!completion_done(&done.completion))
+ cpu_relax();
+
+ mutex_unlock(&stop_cpus_mutex);
diff --git a/debian/patches/features/all/rt/kgb-serial-hackaround.patch b/debian/patches/features/all/rt/kgb-serial-hackaround.patch
index 7c6ae67..190731f 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 6371f8a..63fc4cb 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
This patch provides a recording mechanism to store data of potential
sources of system latencies. The recordings separately determine the
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 62487b8..818404f 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 b86d47a..0bbf8c3 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 f2a5b6e..a721400 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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/lglocks-rt.patch b/debian/patches/features/all/rt/lglocks-rt.patch
index 3ec6622..0b282ce 100644
--- a/debian/patches/features/all/rt/lglocks-rt.patch
+++ b/debian/patches/features/all/rt/lglocks-rt.patch
@@ -1,7 +1,7 @@
Subject: lglocks: Provide a RT safe variant
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 15 Jun 2011 11:02:21 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
lglocks by itself will spin in order to get the lock. This will end up
badly if a task with the highest priority keeps spinning while a task
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 e78a8fa..01a6fd1 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 9eefd2f..3772fe4 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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/localversion.patch b/debian/patches/features/all/rt/localversion.patch
index 9b05466..50e24d4 100644
--- a/debian/patches/features/all/rt/localversion.patch
+++ b/debian/patches/features/all/rt/localversion.patch
@@ -1,7 +1,7 @@
-Subject: v4.4.1-rt5
+Subject: v4.4.1-rt6
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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 @@
-+-rt5
++-rt6
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 57d1189..8c10237 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 be66315..6ec798a 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 41e626c..c4ff692 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 698ec90..9736733 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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/md-disable-bcache.patch b/debian/patches/features/all/rt/md-disable-bcache.patch
index c5b7585..8e4dee2 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 d99ce29..70baa1d 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 c08c0ed..094e1c2 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 b/debian/patches/features/all/rt/mm--rt--Fix-generic-kmap_atomic-for-RT
index a43e023..1538507 100644
--- a/debian/patches/features/all/rt/mm--rt--Fix-generic-kmap_atomic-for-RT
+++ b/debian/patches/features/all/rt/mm--rt--Fix-generic-kmap_atomic-for-RT
@@ -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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
new file mode 100644
index 0000000..acadfda
--- /dev/null
+++ b/debian/patches/features/all/rt/mm-backing-dev-don-t-disable-IRQs-in-wb_congested_pu.patch
@@ -0,0 +1,42 @@
+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/4.4/patches-4.4.1-rt6.tar.xz
+
+it triggers:
+|BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:930
+|in_atomic(): 0, irqs_disabled(): 1, pid: 12, name: rcuc/0
+|1 lock held by rcuc/0/12:
+| #0: (rcu_callback){......}, at: [<ffffffff810ce1a6>] rcu_cpu_kthread+0x376/0xb10
+|irq event stamp: 23636
+|hardirqs last enabled at (23635): [<ffffffff8173524c>] _raw_spin_unlock_irqrestore+0x6c/0x80
+|hardirqs last disabled at (23636): [<ffffffff81173918>] wb_congested_put+0x18/0x90
+| [<ffffffff81735434>] rt_spin_lock+0x24/0x60
+| [<ffffffff810afed2>] atomic_dec_and_spin_lock+0x52/0x90
+| [<ffffffff81173928>] wb_congested_put+0x28/0x90
+| [<ffffffff813b833e>] __blkg_release_rcu+0x5e/0x1e0
+| [<ffffffff813b8367>] ? __blkg_release_rcu+0x87/0x1e0
+| [<ffffffff813b82e0>] ? blkg_conf_finish+0x90/0x90
+| [<ffffffff810ce1e7>] rcu_cpu_kthread+0x3b7/0xb10
+
+due to cgwb_lock beeing taken with spin_lock_irqsave() usually.
+
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ mm/backing-dev.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/mm/backing-dev.c
++++ b/mm/backing-dev.c
+@@ -457,9 +457,9 @@ void wb_congested_put(struct bdi_writeba
+ {
+ unsigned long flags;
+
+- local_irq_save(flags);
++ local_irq_save_nort(flags);
+ if (!atomic_dec_and_lock(&congested->refcnt, &cgwb_lock)) {
+- local_irq_restore(flags);
++ local_irq_restore_nort(flags);
+ return;
+ }
+
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 6fb98cc..4a44327 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 3e700ea..4471251 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Replace global locks (get_cpu + local_irq_save) with "local_locks()".
Currently there is one of for "rotate" and one for "swap".
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 adaea51..15a32d4 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 00fed7e..fedd28d 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 23754b2..60b4fbd 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 c671d67..db4e6ba 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
The following trace is triggered when running ltp oom test cases:
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 ac84808..06f64fd 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
There are a few local_irq_disable() which then take sleeping locks. This
patch converts them local locks.
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 2ce2194..c7c3b80 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 2667950..b446f07 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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.
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 6af2d28..58316fd 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
rt-friendly per-cpu pages: convert the irqs-off per-cpu locking
method into a preemptible, explicit-per-cpu-locks method.
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 fc4cb7f..2ed4886 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 5a953cd..d5e737b 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
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 eafe1fa..f2f463f 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 7a66138..5c1e7bb 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 70f0361..1da4146 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
workingset_shadow_nodes is protected by local_irq_disable(). Some users
use spin_lock_irq().
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 3d4490c..d982f35 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 764691e..83f40f4 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 a376000..b43ef9a 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-another-local-irq-disable-alloc-atomic-headache.patch b/debian/patches/features/all/rt/net-another-local-irq-disable-alloc-atomic-headache.patch
index 2bfde66..da70941 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 b9f4f77..0d5dbdc 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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:
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 aa199ab..45f8908 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-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 d7f0e87..7c6709e 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 c0785f1..1dd653b 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 5609406..3de8f39 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
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 7a97713..219f7b7 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 24dd435..351a72c 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
@@ -38,7 +38,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
extern void raise_softirq(unsigned int nr);
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
-@@ -673,6 +673,27 @@ void __raise_softirq_irqoff(unsigned int
+@@ -675,6 +675,27 @@ void __raise_softirq_irqoff(unsigned int
}
/*
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 2892034..623ad06 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-tx-action-avoid-livelock-on-rt.patch b/debian/patches/features/all/rt/net-tx-action-avoid-livelock-on-rt.patch
index f7587f2..bb11083 100644
--- a/debian/patches/features/all/rt/net-tx-action-avoid-livelock-on-rt.patch
+++ b/debian/patches/features/all/rt/net-tx-action-avoid-livelock-on-rt.patch
@@ -1,7 +1,7 @@
Subject: net: Avoid livelock in net_tx_action() on RT
From: Steven Rostedt <srostedt at redhat.com>
Date: Thu, 06 Oct 2011 10:48:39 -0400
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
qdisc_lock is taken w/o disabling interrupts or bottom halfs. So code
holding a qdisc_lock() can be interrupted and softirqs can run on the
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 ca1b0bd..79abb31 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 76fdcf8..7e5752c 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
The softirq counter is meaningless on RT, so the check triggers a
false positive.
diff --git a/debian/patches/features/all/rt/net__Make_synchronize-rcu_expedited_conditional-on-non-rt b/debian/patches/features/all/rt/net__Make_synchronize-rcu_expedited_conditional-on-non-rt
index 0debdb6..7311f01 100644
--- a/debian/patches/features/all/rt/net__Make_synchronize-rcu_expedited_conditional-on-non-rt
+++ b/debian/patches/features/all/rt/net__Make_synchronize-rcu_expedited_conditional-on-non-rt
@@ -1,7 +1,7 @@
Date: Tue, 27 Oct 2015 07:31:53 -0500
From: Josh Cartwright <joshc at ni.com>
Subject: net: Make synchronize_rcu_expedited() conditional on !RT_FULL
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
While the use of synchronize_rcu_expedited() might make
synchronize_net() "faster", it does so at significant cost on RT
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 e4fb7cb..d184214 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
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 9d700fa..7bd2f25 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 2fcba0e..bbfeb77 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Implementing RCU-bh in terms of RCU-preempt makes the system vulnerable
to network-based denial-of-service attacks. This patch therefore
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 fd1fe7e..0cf4db2 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 982f2b4..fa24600 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 65ae7a1..4380b0b 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 4f68e88..0422785 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
With RT_FULL we get the below wreckage:
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 72f8a2c..079822a 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 e29b4c4..8a8a0fb 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: wait.h: include atomic.h
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
This patch fixes build error:
CC kernel/pid_namespace.o
diff --git a/debian/patches/features/all/rt/ping-sysrq.patch b/debian/patches/features/all/rt/ping-sysrq.patch
index 5837692..c85a3de 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 4c18351..e1d3034 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 9f6fa70..fa5ac31 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
posix-cpu-timer code takes non -rt safe locks in hard irq
context. Move it to a thread.
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 94da283..edc1d9b 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 81e739f..9470689 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 ec47c96..7b75258 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 a6c2dda..83dc81f 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 81fe944..5a71fa6 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
To fix:
diff --git a/debian/patches/features/all/rt/preempt-lazy-check-preempt_schedule.patch b/debian/patches/features/all/rt/preempt-lazy-check-preempt_schedule.patch
index 6e226d2..d7120a3 100644
--- a/debian/patches/features/all/rt/preempt-lazy-check-preempt_schedule.patch
+++ b/debian/patches/features/all/rt/preempt-lazy-check-preempt_schedule.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 20 Jan 2016 15:13:30 +0100
Subject: preempt-lazy: Add the lazy-preemption check to preempt_schedule()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Probably in the rebase onto v4.1 this check got moved into less commonly used
preempt_schedule_notrace(). This patch ensures that both functions use it.
diff --git a/debian/patches/features/all/rt/preempt-lazy-support.patch b/debian/patches/features/all/rt/preempt-lazy-support.patch
index 0a2ca19..c13624b 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
It has become an obsession to mitigate the determinism vs. throughput
loss of RT. Looking at the mainline semantics of preemption points
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 1d0b1e4..f415f42 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 f873f38..3f60581 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 30d9d56..118b3fb 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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.
diff --git a/debian/patches/features/all/rt/printk-rt-aware.patch b/debian/patches/features/all/rt/printk-rt-aware.patch
index e8d05f3..ff8008e 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-don-t-open-IRQs-in-ptrace_freeze_traced-too-e.patch b/debian/patches/features/all/rt/ptrace-don-t-open-IRQs-in-ptrace_freeze_traced-too-e.patch
index 491eb94..4f30868 100644
--- a/debian/patches/features/all/rt/ptrace-don-t-open-IRQs-in-ptrace_freeze_traced-too-e.patch
+++ b/debian/patches/features/all/rt/ptrace-don-t-open-IRQs-in-ptrace_freeze_traced-too-e.patch
@@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 13 Jan 2016 14:09:05 +0100
Subject: ptrace: don't open IRQs in ptrace_freeze_traced() too early
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
In the non-RT case the spin_lock_irq() here disables interrupts as well
as raw_spin_lock_irq(). So in the unlock case the interrupts are enabled
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 cc59021..954b234 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
As explained by Alexander Fyodorov <halcy at yandex.ru>:
diff --git a/debian/patches/features/all/rt/radix-tree-rt-aware.patch b/debian/patches/features/all/rt/radix-tree-rt-aware.patch
index 3d66f6c..3e6113c 100644
--- a/debian/patches/features/all/rt/radix-tree-rt-aware.patch
+++ b/debian/patches/features/all/rt/radix-tree-rt-aware.patch
@@ -1,7 +1,7 @@
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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Disable radix_tree_preload() on -RT. This functions returns with
preemption disabled which may cause high latencies and breaks if the
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 567619d..e4ca0bf 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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/rcu-Eliminate-softirq-processing-from-rcutree.patch b/debian/patches/features/all/rt/rcu-Eliminate-softirq-processing-from-rcutree.patch
index 85afe3b..5cda691 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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"
-@@ -2956,18 +2961,17 @@ static void
+@@ -2960,18 +2965,17 @@ 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,
-@@ -2979,18 +2983,105 @@ static void invoke_rcu_callbacks(struct
+@@ -2983,18 +2987,105 @@ 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.
-@@ -4609,7 +4700,6 @@ void __init rcu_init(void)
+@@ -4615,7 +4706,6 @@ void __init rcu_init(void)
if (dump_tree)
rcu_dump_rcu_node_tree(&rcu_sched_state);
__rcu_init_preempt();
@@ -179,7 +179,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
* We don't need protection against CPU-hotplug here because
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
-@@ -563,12 +563,10 @@ extern struct rcu_state rcu_bh_state;
+@@ -565,12 +565,10 @@ extern struct rcu_state rcu_bh_state;
extern struct rcu_state rcu_preempt_state;
#endif /* #ifdef CONFIG_PREEMPT_RCU */
@@ -192,7 +192,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
#ifndef RCU_TREE_NONCORE
-@@ -588,10 +586,9 @@ void call_rcu(struct rcu_head *head, rcu
+@@ -590,10 +588,9 @@ void call_rcu(struct rcu_head *head, rcu
static void __init __rcu_init_preempt(void);
static void rcu_initiate_boost(struct rcu_node *rnp, unsigned long flags);
static void rcu_preempt_boost_start_gp(struct rcu_node *rnp);
diff --git a/debian/patches/features/all/rt/rcu-disable-more-spots-of-rcu_bh.patch b/debian/patches/features/all/rt/rcu-disable-more-spots-of-rcu_bh.patch
new file mode 100644
index 0000000..9e9ae1d
--- /dev/null
+++ b/debian/patches/features/all/rt/rcu-disable-more-spots-of-rcu_bh.patch
@@ -0,0 +1,64 @@
+From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+Date: Wed, 10 Feb 2016 18:30:56 +0100
+Subject: rcu: disable more spots of rcu_bh
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
+
+We don't use ru_bh on -RT but we still fork a thread for it and keep it
+as a flavour. No more.
+
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ kernel/rcu/tree.c | 6 ++++++
+ kernel/rcu/tree.h | 2 ++
+ 2 files changed, 8 insertions(+)
+
+--- a/kernel/rcu/tree.c
++++ b/kernel/rcu/tree.c
+@@ -449,11 +449,13 @@ EXPORT_SYMBOL_GPL(rcu_batches_started_sc
+ /*
+ * Return the number of RCU BH batches started thus far for debug & stats.
+ */
++#ifndef CONFIG_PREEMPT_RT_FULL
+ unsigned long rcu_batches_started_bh(void)
+ {
+ return rcu_bh_state.gpnum;
+ }
+ EXPORT_SYMBOL_GPL(rcu_batches_started_bh);
++#endif
+
+ /*
+ * Return the number of RCU batches completed thus far for debug & stats.
+@@ -558,9 +560,11 @@ void rcutorture_get_gp_data(enum rcutort
+ case RCU_FLAVOR:
+ rsp = rcu_state_p;
+ break;
++#ifndef CONFIG_PREEMPT_RT_FULL
+ case RCU_BH_FLAVOR:
+ rsp = &rcu_bh_state;
+ break;
++#endif
+ case RCU_SCHED_FLAVOR:
+ rsp = &rcu_sched_state;
+ break;
+@@ -4604,7 +4608,9 @@ void __init rcu_init(void)
+
+ rcu_bootup_announce();
+ rcu_init_geometry();
++#ifndef CONFIG_PREEMPT_RT_FULL
+ rcu_init_one(&rcu_bh_state, &rcu_bh_data);
++#endif
+ rcu_init_one(&rcu_sched_state, &rcu_sched_data);
+ if (dump_tree)
+ rcu_dump_rcu_node_tree(&rcu_sched_state);
+--- a/kernel/rcu/tree.h
++++ b/kernel/rcu/tree.h
+@@ -556,7 +556,9 @@ extern struct list_head rcu_struct_flavo
+ */
+ extern struct rcu_state rcu_sched_state;
+
++#ifndef CONFIG_PREEMPT_RT_FULL
+ extern struct rcu_state rcu_bh_state;
++#endif
+
+ #ifdef CONFIG_PREEMPT_RCU
+ extern struct rcu_state rcu_preempt_state;
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 ef28966..ab54957 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-make-RCU_BOOST-default-on-RT.patch b/debian/patches/features/all/rt/rcu-make-RCU_BOOST-default-on-RT.patch
index d9deea5..ce006eb 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 a6bdaab..d00d828 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
The Linux kernel has long RCU-bh read-side critical sections that
intolerably increase scheduling latency under mainline's RCU-bh rules,
diff --git a/debian/patches/features/all/rt/rcu-more-swait-conversions.patch b/debian/patches/features/all/rt/rcu-more-swait-conversions.patch
index 9d8051c..59f31de 100644
--- a/debian/patches/features/all/rt/rcu-more-swait-conversions.patch
+++ b/debian/patches/features/all/rt/rcu-more-swait-conversions.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Wed, 31 Jul 2013 19:00:35 +0200
Subject: rcu: use simple waitqueues
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Convert RCU's wait-queues into simple waitqueues.
@@ -24,7 +24,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
-@@ -1633,7 +1633,7 @@ static void rcu_gp_kthread_wake(struct r
+@@ -1637,7 +1637,7 @@ static void rcu_gp_kthread_wake(struct r
!READ_ONCE(rsp->gp_flags) ||
!rsp->gp_kthread)
return;
@@ -33,7 +33,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
}
/*
-@@ -2098,7 +2098,7 @@ static int __noreturn rcu_gp_kthread(voi
+@@ -2102,7 +2102,7 @@ static int __noreturn rcu_gp_kthread(voi
READ_ONCE(rsp->gpnum),
TPS("reqwait"));
rsp->gp_state = RCU_GP_WAIT_GPS;
@@ -42,7 +42,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
READ_ONCE(rsp->gp_flags) &
RCU_GP_FLAG_INIT);
rsp->gp_state = RCU_GP_DONE_GPS;
-@@ -2128,7 +2128,7 @@ static int __noreturn rcu_gp_kthread(voi
+@@ -2132,7 +2132,7 @@ static int __noreturn rcu_gp_kthread(voi
READ_ONCE(rsp->gpnum),
TPS("fqswait"));
rsp->gp_state = RCU_GP_WAIT_FQS;
@@ -51,7 +51,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
rcu_gp_fqs_check_wake(rsp, &gf), j);
rsp->gp_state = RCU_GP_DOING_FQS;
/* Locking provides needed memory barriers. */
-@@ -3550,7 +3550,7 @@ static void __rcu_report_exp_rnp(struct
+@@ -3554,7 +3554,7 @@ static void __rcu_report_exp_rnp(struct
raw_spin_unlock_irqrestore(&rnp->lock, flags);
if (wake) {
smp_mb(); /* EGP done before wake_up(). */
@@ -60,7 +60,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
}
break;
}
-@@ -3807,7 +3807,7 @@ static void synchronize_sched_expedited_
+@@ -3811,7 +3811,7 @@ static void synchronize_sched_expedited_
jiffies_start = jiffies;
for (;;) {
@@ -69,7 +69,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
rsp->expedited_wq,
sync_rcu_preempt_exp_done(rnp_root),
jiffies_stall);
-@@ -3815,7 +3815,7 @@ static void synchronize_sched_expedited_
+@@ -3819,7 +3819,7 @@ static void synchronize_sched_expedited_
return;
if (ret < 0) {
/* Hit a signal, disable CPU stall warnings. */
@@ -78,7 +78,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
sync_rcu_preempt_exp_done(rnp_root));
return;
}
-@@ -4483,8 +4483,8 @@ static void __init rcu_init_one(struct r
+@@ -4487,8 +4487,8 @@ static void __init rcu_init_one(struct r
}
}
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 2e22c5d..467d834 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
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 104c20f..a8034b5 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 377e875..aad2292 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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/relay-fix-timer-madness.patch b/debian/patches/features/all/rt/relay-fix-timer-madness.patch
index 750dc09..cc4a6b7 100644
--- a/debian/patches/features/all/rt/relay-fix-timer-madness.patch
+++ b/debian/patches/features/all/rt/relay-fix-timer-madness.patch
@@ -1,7 +1,7 @@
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 3 Jul 2009 08:44:07 -0500
Subject: relay: Fix timer madness
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
remove timer calls (!!!) from deep within the tracing infrastructure.
This was totally bogus code that can cause lockups and worse. Poll
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 7cb8205..9226861 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 18a3d3f..92c4bc8 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Map spinlocks, rwlocks, rw_semaphores and semaphores to the rt_mutex
based locking functions for preempt-rt.
@@ -28,12 +28,12 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
kernel/futex.c | 10
kernel/locking/Makefile | 9
kernel/locking/rt.c | 476 ++++++++++++++++++++++++++++++++++++++
- kernel/locking/rtmutex.c | 423 +++++++++++++++++++++++++++++++--
+ kernel/locking/rtmutex.c | 422 +++++++++++++++++++++++++++++++--
kernel/locking/rtmutex_common.h | 14 +
kernel/locking/spinlock.c | 7
kernel/locking/spinlock_debug.c | 5
kernel/sched/core.c | 7
- 23 files changed, 1598 insertions(+), 56 deletions(-)
+ 23 files changed, 1597 insertions(+), 56 deletions(-)
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -925,7 +925,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
@@ -1268,7 +1269,8 @@ static int wake_futex_pi(u32 __user *uad
- raw_spin_unlock(&pi_state->pi_mutex.wait_lock);
+ raw_spin_unlock_irq(&pi_state->pi_mutex.wait_lock);
- deboost = rt_mutex_futex_unlock(&pi_state->pi_mutex, &wake_q);
+ deboost = rt_mutex_futex_unlock(&pi_state->pi_mutex, &wake_q,
@@ -1478,7 +1478,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
*
* See Documentation/locking/rt-mutex-design.txt for details.
*/
-@@ -354,6 +359,14 @@ static bool rt_mutex_cond_detect_deadloc
+@@ -356,6 +361,14 @@ static bool rt_mutex_cond_detect_deadloc
return debug_rt_mutex_detect_deadlock(waiter, chwalk);
}
@@ -1493,7 +1493,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/*
* Max number of times we'll walk the boosting chain:
*/
-@@ -661,13 +674,16 @@ static int rt_mutex_adjust_prio_chain(st
+@@ -662,13 +675,16 @@ static int rt_mutex_adjust_prio_chain(st
* follow here. This is the end of the chain we are walking.
*/
if (!rt_mutex_owner(lock)) {
@@ -1509,10 +1509,10 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+ lock_top_waiter = rt_mutex_top_waiter(lock);
+ if (prerequeue_top_waiter != lock_top_waiter)
+ rt_mutex_wake_waiter(lock_top_waiter);
- raw_spin_unlock(&lock->wait_lock);
+ raw_spin_unlock_irq(&lock->wait_lock);
return 0;
}
-@@ -760,6 +776,25 @@ static int rt_mutex_adjust_prio_chain(st
+@@ -761,6 +777,25 @@ static int rt_mutex_adjust_prio_chain(st
return ret;
}
@@ -1538,7 +1538,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/*
* Try to take an rt-mutex
*
-@@ -770,8 +805,9 @@ static int rt_mutex_adjust_prio_chain(st
+@@ -771,8 +806,9 @@ static int rt_mutex_adjust_prio_chain(st
* @waiter: The waiter that is queued to the lock's wait tree if the
* callsite called task_blocked_on_lock(), otherwise NULL
*/
@@ -1548,9 +1548,9 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+ struct task_struct *task,
+ struct rt_mutex_waiter *waiter, int mode)
{
- unsigned long flags;
-
-@@ -810,8 +846,10 @@ static int try_to_take_rt_mutex(struct r
+ /*
+ * Before testing whether we can acquire @lock, we set the
+@@ -809,8 +845,10 @@ static int try_to_take_rt_mutex(struct r
* If waiter is not the highest priority waiter of
* @lock, give up.
*/
@@ -1562,7 +1562,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/*
* We can acquire the lock. Remove the waiter from the
-@@ -829,14 +867,10 @@ static int try_to_take_rt_mutex(struct r
+@@ -828,14 +866,10 @@ static int try_to_take_rt_mutex(struct r
* not need to be dequeued.
*/
if (rt_mutex_has_waiters(lock)) {
@@ -1580,7 +1580,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/*
* The current top waiter stays enqueued. We
* don't have to change anything in the lock
-@@ -885,6 +919,315 @@ static int try_to_take_rt_mutex(struct r
+@@ -884,6 +918,314 @@ static int try_to_take_rt_mutex(struct r
return 1;
}
@@ -1643,9 +1643,6 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+}
+#endif
+
-+# define pi_lock(lock) raw_spin_lock_irq(lock)
-+# define pi_unlock(lock) raw_spin_unlock_irq(lock)
-+
+static int task_blocks_on_rt_mutex(struct rt_mutex *lock,
+ struct rt_mutex_waiter *waiter,
+ struct task_struct *task,
@@ -1661,14 +1658,15 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+{
+ struct task_struct *lock_owner, *self = current;
+ struct rt_mutex_waiter waiter, *top_waiter;
++ unsigned long flags;
+ int ret;
+
+ rt_mutex_init_waiter(&waiter, true);
+
-+ raw_spin_lock(&lock->wait_lock);
++ raw_spin_lock_irqsave(&lock->wait_lock, flags);
+
+ if (__try_to_take_rt_mutex(lock, self, NULL, STEAL_LATERAL)) {
-+ raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irqrestore(&lock->wait_lock, flags);
+ return;
+ }
+
@@ -1680,10 +1678,10 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+ * as well. We are serialized via pi_lock against wakeups. See
+ * try_to_wake_up().
+ */
-+ pi_lock(&self->pi_lock);
++ raw_spin_lock(&self->pi_lock);
+ self->saved_state = self->state;
+ __set_current_state_no_track(TASK_UNINTERRUPTIBLE);
-+ pi_unlock(&self->pi_lock);
++ raw_spin_unlock(&self->pi_lock);
+
+ ret = task_blocks_on_rt_mutex(lock, &waiter, self, 0);
+ BUG_ON(ret);
@@ -1696,18 +1694,18 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+ top_waiter = rt_mutex_top_waiter(lock);
+ lock_owner = rt_mutex_owner(lock);
+
-+ raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irqrestore(&lock->wait_lock, flags);
+
+ debug_rt_mutex_print_deadlock(&waiter);
+
+ if (top_waiter != &waiter || adaptive_wait(lock, lock_owner))
+ schedule();
+
-+ raw_spin_lock(&lock->wait_lock);
++ raw_spin_lock_irqsave(&lock->wait_lock, flags);
+
-+ pi_lock(&self->pi_lock);
++ raw_spin_lock(&self->pi_lock);
+ __set_current_state_no_track(TASK_UNINTERRUPTIBLE);
-+ pi_unlock(&self->pi_lock);
++ raw_spin_unlock(&self->pi_lock);
+ }
+
+ /*
@@ -1717,10 +1715,10 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+ * happened while we were blocked. Clear saved_state so
+ * try_to_wakeup() does not get confused.
+ */
-+ pi_lock(&self->pi_lock);
++ raw_spin_lock(&self->pi_lock);
+ __set_current_state_no_track(self->saved_state);
+ self->saved_state = TASK_RUNNING;
-+ pi_unlock(&self->pi_lock);
++ raw_spin_unlock(&self->pi_lock);
+
+ /*
+ * try_to_take_rt_mutex() sets the waiter bit
@@ -1731,7 +1729,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+ BUG_ON(rt_mutex_has_waiters(lock) && &waiter == rt_mutex_top_waiter(lock));
+ BUG_ON(!RB_EMPTY_NODE(&waiter.tree_entry));
+
-+ raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irqrestore(&lock->wait_lock, flags);
+
+ debug_rt_mutex_free_waiter(&waiter);
+}
@@ -1744,10 +1742,11 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+ */
+static void noinline __sched rt_spin_lock_slowunlock(struct rt_mutex *lock)
+{
++ unsigned long flags;
+ WAKE_Q(wake_q);
+ WAKE_Q(wake_sleeper_q);
+
-+ raw_spin_lock(&lock->wait_lock);
++ raw_spin_lock_irqsave(&lock->wait_lock, flags);
+
+ debug_rt_mutex_unlock(lock);
+
@@ -1755,13 +1754,13 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+
+ if (!rt_mutex_has_waiters(lock)) {
+ lock->owner = NULL;
-+ raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irqrestore(&lock->wait_lock, flags);
+ return;
+ }
+
+ mark_wakeup_next_waiter(&wake_q, &wake_sleeper_q, lock);
+
-+ raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irqrestore(&lock->wait_lock, flags);
+ wake_up_q(&wake_q);
+ wake_up_q_sleeper(&wake_sleeper_q);
+
@@ -1896,17 +1895,17 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/*
* Task blocks on lock.
*
-@@ -998,6 +1341,7 @@ static int task_blocks_on_rt_mutex(struc
- * Called with lock->wait_lock held.
+@@ -996,6 +1338,7 @@ static int task_blocks_on_rt_mutex(struc
+ * Called with lock->wait_lock held and interrupts disabled.
*/
static void mark_wakeup_next_waiter(struct wake_q_head *wake_q,
+ struct wake_q_head *wake_sleeper_q,
struct rt_mutex *lock)
{
struct rt_mutex_waiter *waiter;
-@@ -1027,7 +1371,10 @@ static void mark_wakeup_next_waiter(stru
+@@ -1024,7 +1367,10 @@ static void mark_wakeup_next_waiter(stru
- raw_spin_unlock_irqrestore(¤t->pi_lock, flags);
+ raw_spin_unlock(¤t->pi_lock);
- wake_q_add(wake_q, waiter->task);
+ if (waiter->savestate)
@@ -1916,7 +1915,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
/*
-@@ -1109,11 +1456,11 @@ void rt_mutex_adjust_pi(struct task_stru
+@@ -1105,11 +1451,11 @@ void rt_mutex_adjust_pi(struct task_stru
return;
}
next_lock = waiter->lock;
@@ -1929,8 +1928,8 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
rt_mutex_adjust_prio_chain(task, RT_MUTEX_MIN_CHAINWALK, NULL,
next_lock, NULL, task);
}
-@@ -1199,9 +1546,7 @@ rt_mutex_slowlock(struct rt_mutex *lock,
- struct rt_mutex_waiter waiter;
+@@ -1196,9 +1542,7 @@ rt_mutex_slowlock(struct rt_mutex *lock,
+ unsigned long flags;
int ret = 0;
- debug_rt_mutex_init_waiter(&waiter);
@@ -1938,9 +1937,9 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
- RB_CLEAR_NODE(&waiter.tree_entry);
+ rt_mutex_init_waiter(&waiter, false);
- raw_spin_lock(&lock->wait_lock);
-
-@@ -1286,7 +1631,8 @@ static inline int rt_mutex_slowtrylock(s
+ /*
+ * Technically we could use raw_spin_[un]lock_irq() here, but this can
+@@ -1292,7 +1636,8 @@ static inline int rt_mutex_slowtrylock(s
* Return whether the current task needs to undo a potential priority boosting.
*/
static bool __sched rt_mutex_slowunlock(struct rt_mutex *lock,
@@ -1948,18 +1947,18 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+ struct wake_q_head *wake_q,
+ struct wake_q_head *wake_sleeper_q)
{
- raw_spin_lock(&lock->wait_lock);
+ unsigned long flags;
-@@ -1339,7 +1685,7 @@ static bool __sched rt_mutex_slowunlock(
+@@ -1348,7 +1693,7 @@ static bool __sched rt_mutex_slowunlock(
*
* Queue the next waiter for wakeup once we release the wait_lock.
*/
- mark_wakeup_next_waiter(wake_q, lock);
+ mark_wakeup_next_waiter(wake_q, wake_sleeper_q, lock);
- raw_spin_unlock(&lock->wait_lock);
+ raw_spin_unlock_irqrestore(&lock->wait_lock, flags);
-@@ -1396,17 +1742,20 @@ rt_mutex_fasttrylock(struct rt_mutex *lo
+@@ -1405,17 +1750,20 @@ rt_mutex_fasttrylock(struct rt_mutex *lo
static inline void
rt_mutex_fastunlock(struct rt_mutex *lock,
bool (*slowfn)(struct rt_mutex *lock,
@@ -1982,7 +1981,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/* Undo pi boosting if necessary: */
if (deboost)
-@@ -1543,13 +1892,14 @@ EXPORT_SYMBOL_GPL(rt_mutex_unlock);
+@@ -1552,13 +1900,14 @@ EXPORT_SYMBOL_GPL(rt_mutex_unlock);
* required or not.
*/
bool __sched rt_mutex_futex_unlock(struct rt_mutex *lock,
@@ -1999,7 +1998,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
/**
-@@ -1582,13 +1932,12 @@ EXPORT_SYMBOL_GPL(rt_mutex_destroy);
+@@ -1591,13 +1940,12 @@ EXPORT_SYMBOL_GPL(rt_mutex_destroy);
void __rt_mutex_init(struct rt_mutex *lock, const char *name)
{
lock->owner = NULL;
@@ -2014,7 +2013,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/**
* rt_mutex_init_proxy_locked - initialize and lock a rt_mutex on behalf of a
-@@ -1603,7 +1952,7 @@ EXPORT_SYMBOL_GPL(__rt_mutex_init);
+@@ -1612,7 +1960,7 @@ EXPORT_SYMBOL_GPL(__rt_mutex_init);
void rt_mutex_init_proxy_locked(struct rt_mutex *lock,
struct task_struct *proxy_owner)
{
@@ -2023,7 +2022,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
debug_rt_mutex_proxy_lock(lock, proxy_owner);
rt_mutex_set_owner(lock, proxy_owner);
rt_mutex_deadlock_account_lock(lock, proxy_owner);
-@@ -1765,3 +2114,25 @@ int rt_mutex_finish_proxy_lock(struct rt
+@@ -1774,3 +2122,25 @@ int rt_mutex_finish_proxy_lock(struct rt
return ret;
}
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 2e87f33..7f390e7 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 5dff93f..1435146 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
new file mode 100644
index 0000000..a8f4cdb
--- /dev/null
+++ b/debian/patches/features/all/rt/rt-locking-Reenable-migration-accross-schedule.patch
@@ -0,0 +1,112 @@
+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/4.4/patches-4.4.1-rt6.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
+taking the lock as that would cause a possible lock inversion.
+
+But we can be smart and enable migration when we block and schedule out. That
+allows the scheduler to place the task freely at least if this is the first
+migrate disable level. For nested locking this does not help at all.
+
+Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ kernel/locking/rtmutex.c | 32 ++++++++++++++++++++------------
+ 1 file changed, 20 insertions(+), 12 deletions(-)
+
+--- a/kernel/locking/rtmutex.c
++++ b/kernel/locking/rtmutex.c
+@@ -924,14 +924,19 @@ static int __try_to_take_rt_mutex(struct
+ * preemptible spin_lock functions:
+ */
+ static inline void rt_spin_lock_fastlock(struct rt_mutex *lock,
+- void (*slowfn)(struct rt_mutex *lock))
++ void (*slowfn)(struct rt_mutex *lock,
++ bool mg_off),
++ bool do_mig_dis)
+ {
+ might_sleep_no_state_check();
+
++ if (do_mig_dis)
++ migrate_disable();
++
+ if (likely(rt_mutex_cmpxchg_acquire(lock, NULL, current)))
+ rt_mutex_deadlock_account_lock(lock, current);
+ else
+- slowfn(lock);
++ slowfn(lock, do_mig_dis);
+ }
+
+ static inline void rt_spin_lock_fastunlock(struct rt_mutex *lock,
+@@ -989,7 +994,8 @@ static int task_blocks_on_rt_mutex(struc
+ * We store the current state under p->pi_lock in p->saved_state and
+ * the try_to_wake_up() code handles this accordingly.
+ */
+-static void noinline __sched rt_spin_lock_slowlock(struct rt_mutex *lock)
++static void noinline __sched rt_spin_lock_slowlock(struct rt_mutex *lock,
++ bool mg_off)
+ {
+ struct task_struct *lock_owner, *self = current;
+ struct rt_mutex_waiter waiter, *top_waiter;
+@@ -1033,8 +1039,13 @@ static void noinline __sched rt_spin_lo
+
+ debug_rt_mutex_print_deadlock(&waiter);
+
+- if (top_waiter != &waiter || adaptive_wait(lock, lock_owner))
++ if (top_waiter != &waiter || adaptive_wait(lock, lock_owner)) {
++ if (mg_off)
++ migrate_enable();
+ schedule();
++ if (mg_off)
++ migrate_disable();
++ }
+
+ raw_spin_lock_irqsave(&lock->wait_lock, flags);
+
+@@ -1105,38 +1116,35 @@ static void noinline __sched rt_spin_lo
+
+ void __lockfunc rt_spin_lock__no_mg(spinlock_t *lock)
+ {
+- rt_spin_lock_fastlock(&lock->lock, rt_spin_lock_slowlock);
++ rt_spin_lock_fastlock(&lock->lock, rt_spin_lock_slowlock, false);
+ spin_acquire(&lock->dep_map, 0, 0, _RET_IP_);
+ }
+ EXPORT_SYMBOL(rt_spin_lock__no_mg);
+
+ void __lockfunc rt_spin_lock(spinlock_t *lock)
+ {
+- migrate_disable();
+- rt_spin_lock_fastlock(&lock->lock, rt_spin_lock_slowlock);
++ rt_spin_lock_fastlock(&lock->lock, rt_spin_lock_slowlock, true);
+ spin_acquire(&lock->dep_map, 0, 0, _RET_IP_);
+ }
+ EXPORT_SYMBOL(rt_spin_lock);
+
+ void __lockfunc __rt_spin_lock(struct rt_mutex *lock)
+ {
+- migrate_disable();
+- rt_spin_lock_fastlock(lock, rt_spin_lock_slowlock);
++ rt_spin_lock_fastlock(lock, rt_spin_lock_slowlock, true);
+ }
+ EXPORT_SYMBOL(__rt_spin_lock);
+
+ void __lockfunc __rt_spin_lock__no_mg(struct rt_mutex *lock)
+ {
+- rt_spin_lock_fastlock(lock, rt_spin_lock_slowlock);
++ rt_spin_lock_fastlock(lock, rt_spin_lock_slowlock, false);
+ }
+ EXPORT_SYMBOL(__rt_spin_lock__no_mg);
+
+ #ifdef CONFIG_DEBUG_LOCK_ALLOC
+ void __lockfunc rt_spin_lock_nested(spinlock_t *lock, int subclass)
+ {
+- migrate_disable();
+- rt_spin_lock_fastlock(&lock->lock, rt_spin_lock_slowlock);
+ spin_acquire(&lock->dep_map, subclass, 0, _RET_IP_);
++ rt_spin_lock_fastlock(&lock->lock, rt_spin_lock_slowlock, true);
+ }
+ EXPORT_SYMBOL(rt_spin_lock_nested);
+ #endif
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 7460614..9eb8051 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 4af3008..c678fe5 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Beyond the warning:
diff --git a/debian/patches/features/all/rt/rtmutex--Handle-non-enqueued-waiters-gracefully b/debian/patches/features/all/rt/rtmutex--Handle-non-enqueued-waiters-gracefully
index 2b0b2ff..bb28bdb 100644
--- a/debian/patches/features/all/rt/rtmutex--Handle-non-enqueued-waiters-gracefully
+++ b/debian/patches/features/all/rt/rtmutex--Handle-non-enqueued-waiters-gracefully
@@ -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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
@@ -22,7 +22,7 @@ Cc: stable-rt at vger.kernel.org
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
-@@ -1617,7 +1617,7 @@ int rt_mutex_start_proxy_lock(struct rt_
+@@ -1626,7 +1626,7 @@ int rt_mutex_start_proxy_lock(struct rt_
ret = 0;
}
@@ -30,4 +30,4 @@ Cc: stable-rt at vger.kernel.org
+ if (ret && rt_mutex_has_waiters(lock))
remove_waiter(lock, waiter);
- raw_spin_unlock(&lock->wait_lock);
+ raw_spin_unlock_irq(&lock->wait_lock);
diff --git a/debian/patches/features/all/rt/rtmutex-Make-wait_lock-irq-safe.patch b/debian/patches/features/all/rt/rtmutex-Make-wait_lock-irq-safe.patch
new file mode 100644
index 0000000..f2999b1
--- /dev/null
+++ b/debian/patches/features/all/rt/rtmutex-Make-wait_lock-irq-safe.patch
@@ -0,0 +1,598 @@
+From: Thomas Gleixner <tglx at linutronix.de>
+Date: Wed, 13 Jan 2016 11:25:38 +0100
+Subject: rtmutex: Make wait_lock irq safe
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
+
+Sasha reported a lockdep splat about a potential deadlock between RCU boosting
+rtmutex and the posix timer it_lock.
+
+CPU0 CPU1
+
+rtmutex_lock(&rcu->rt_mutex)
+ spin_lock(&rcu->rt_mutex.wait_lock)
+ local_irq_disable()
+ spin_lock(&timer->it_lock)
+ spin_lock(&rcu->mutex.wait_lock)
+--> Interrupt
+ spin_lock(&timer->it_lock)
+
+This is caused by the following code sequence on CPU1
+
+ rcu_read_lock()
+ x = lookup();
+ if (x)
+ spin_lock_irqsave(&x->it_lock);
+ rcu_read_unlock();
+ return x;
+
+We could fix that in the posix timer code by keeping rcu read locked across
+the spinlocked and irq disabled section, but the above sequence is common and
+there is no reason not to support it.
+
+Taking rt_mutex.wait_lock irq safe prevents the deadlock.
+
+Reported-by: Sasha Levin <sasha.levin at oracle.com>
+Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+Cc: Peter Zijlstra <peterz at infradead.org>
+Cc: Paul McKenney <paulmck at linux.vnet.ibm.com>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ kernel/futex.c | 18 +++---
+ kernel/locking/rtmutex.c | 135 +++++++++++++++++++++++++----------------------
+ 2 files changed, 81 insertions(+), 72 deletions(-)
+
+--- a/kernel/futex.c
++++ b/kernel/futex.c
+@@ -1223,7 +1223,7 @@ static int wake_futex_pi(u32 __user *uad
+ if (pi_state->owner != current)
+ return -EINVAL;
+
+- raw_spin_lock(&pi_state->pi_mutex.wait_lock);
++ raw_spin_lock_irq(&pi_state->pi_mutex.wait_lock);
+ new_owner = rt_mutex_next_owner(&pi_state->pi_mutex);
+
+ /*
+@@ -1249,22 +1249,22 @@ static int wake_futex_pi(u32 __user *uad
+ else if (curval != uval)
+ ret = -EINVAL;
+ if (ret) {
+- raw_spin_unlock(&pi_state->pi_mutex.wait_lock);
++ raw_spin_unlock_irq(&pi_state->pi_mutex.wait_lock);
+ return ret;
+ }
+
+- raw_spin_lock_irq(&pi_state->owner->pi_lock);
++ raw_spin_lock(&pi_state->owner->pi_lock);
+ WARN_ON(list_empty(&pi_state->list));
+ list_del_init(&pi_state->list);
+- raw_spin_unlock_irq(&pi_state->owner->pi_lock);
++ raw_spin_unlock(&pi_state->owner->pi_lock);
+
+- raw_spin_lock_irq(&new_owner->pi_lock);
++ raw_spin_lock(&new_owner->pi_lock);
+ WARN_ON(!list_empty(&pi_state->list));
+ list_add(&pi_state->list, &new_owner->pi_state_list);
+ pi_state->owner = new_owner;
+- raw_spin_unlock_irq(&new_owner->pi_lock);
++ raw_spin_unlock(&new_owner->pi_lock);
+
+- raw_spin_unlock(&pi_state->pi_mutex.wait_lock);
++ raw_spin_unlock_irq(&pi_state->pi_mutex.wait_lock);
+
+ deboost = rt_mutex_futex_unlock(&pi_state->pi_mutex, &wake_q);
+
+@@ -2129,11 +2129,11 @@ static int fixup_owner(u32 __user *uaddr
+ * we returned due to timeout or signal without taking the
+ * rt_mutex. Too late.
+ */
+- raw_spin_lock(&q->pi_state->pi_mutex.wait_lock);
++ raw_spin_lock_irq(&q->pi_state->pi_mutex.wait_lock);
+ owner = rt_mutex_owner(&q->pi_state->pi_mutex);
+ if (!owner)
+ owner = rt_mutex_next_owner(&q->pi_state->pi_mutex);
+- raw_spin_unlock(&q->pi_state->pi_mutex.wait_lock);
++ raw_spin_unlock_irq(&q->pi_state->pi_mutex.wait_lock);
+ ret = fixup_pi_state_owner(uaddr, q, owner);
+ goto out;
+ }
+--- a/kernel/locking/rtmutex.c
++++ b/kernel/locking/rtmutex.c
+@@ -99,13 +99,14 @@ static inline void mark_rt_mutex_waiters
+ * 2) Drop lock->wait_lock
+ * 3) Try to unlock the lock with cmpxchg
+ */
+-static inline bool unlock_rt_mutex_safe(struct rt_mutex *lock)
++static inline bool unlock_rt_mutex_safe(struct rt_mutex *lock,
++ unsigned long flags)
+ __releases(lock->wait_lock)
+ {
+ struct task_struct *owner = rt_mutex_owner(lock);
+
+ clear_rt_mutex_waiters(lock);
+- raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irqrestore(&lock->wait_lock, flags);
+ /*
+ * If a new waiter comes in between the unlock and the cmpxchg
+ * we have two situations:
+@@ -147,11 +148,12 @@ static inline void mark_rt_mutex_waiters
+ /*
+ * Simple slow path only version: lock->owner is protected by lock->wait_lock.
+ */
+-static inline bool unlock_rt_mutex_safe(struct rt_mutex *lock)
++static inline bool unlock_rt_mutex_safe(struct rt_mutex *lock,
++ unsigned long flags)
+ __releases(lock->wait_lock)
+ {
+ lock->owner = NULL;
+- raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irqrestore(&lock->wait_lock, flags);
+ return true;
+ }
+ #endif
+@@ -433,7 +435,6 @@ static int rt_mutex_adjust_prio_chain(st
+ int ret = 0, depth = 0;
+ struct rt_mutex *lock;
+ bool detect_deadlock;
+- unsigned long flags;
+ bool requeue = true;
+
+ detect_deadlock = rt_mutex_cond_detect_deadlock(orig_waiter, chwalk);
+@@ -476,7 +477,7 @@ static int rt_mutex_adjust_prio_chain(st
+ /*
+ * [1] Task cannot go away as we did a get_task() before !
+ */
+- raw_spin_lock_irqsave(&task->pi_lock, flags);
++ raw_spin_lock_irq(&task->pi_lock);
+
+ /*
+ * [2] Get the waiter on which @task is blocked on.
+@@ -560,7 +561,7 @@ static int rt_mutex_adjust_prio_chain(st
+ * operations.
+ */
+ if (!raw_spin_trylock(&lock->wait_lock)) {
+- raw_spin_unlock_irqrestore(&task->pi_lock, flags);
++ raw_spin_unlock_irq(&task->pi_lock);
+ cpu_relax();
+ goto retry;
+ }
+@@ -591,7 +592,7 @@ static int rt_mutex_adjust_prio_chain(st
+ /*
+ * No requeue[7] here. Just release @task [8]
+ */
+- raw_spin_unlock_irqrestore(&task->pi_lock, flags);
++ raw_spin_unlock(&task->pi_lock);
+ put_task_struct(task);
+
+ /*
+@@ -599,14 +600,14 @@ static int rt_mutex_adjust_prio_chain(st
+ * If there is no owner of the lock, end of chain.
+ */
+ if (!rt_mutex_owner(lock)) {
+- raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irq(&lock->wait_lock);
+ return 0;
+ }
+
+ /* [10] Grab the next task, i.e. owner of @lock */
+ task = rt_mutex_owner(lock);
+ get_task_struct(task);
+- raw_spin_lock_irqsave(&task->pi_lock, flags);
++ raw_spin_lock(&task->pi_lock);
+
+ /*
+ * No requeue [11] here. We just do deadlock detection.
+@@ -621,8 +622,8 @@ static int rt_mutex_adjust_prio_chain(st
+ top_waiter = rt_mutex_top_waiter(lock);
+
+ /* [13] Drop locks */
+- raw_spin_unlock_irqrestore(&task->pi_lock, flags);
+- raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock(&task->pi_lock);
++ raw_spin_unlock_irq(&lock->wait_lock);
+
+ /* If owner is not blocked, end of chain. */
+ if (!next_lock)
+@@ -643,7 +644,7 @@ static int rt_mutex_adjust_prio_chain(st
+ rt_mutex_enqueue(lock, waiter);
+
+ /* [8] Release the task */
+- raw_spin_unlock_irqrestore(&task->pi_lock, flags);
++ raw_spin_unlock(&task->pi_lock);
+ put_task_struct(task);
+
+ /*
+@@ -661,14 +662,14 @@ static int rt_mutex_adjust_prio_chain(st
+ */
+ if (prerequeue_top_waiter != rt_mutex_top_waiter(lock))
+ wake_up_process(rt_mutex_top_waiter(lock)->task);
+- raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irq(&lock->wait_lock);
+ return 0;
+ }
+
+ /* [10] Grab the next task, i.e. the owner of @lock */
+ task = rt_mutex_owner(lock);
+ get_task_struct(task);
+- raw_spin_lock_irqsave(&task->pi_lock, flags);
++ raw_spin_lock(&task->pi_lock);
+
+ /* [11] requeue the pi waiters if necessary */
+ if (waiter == rt_mutex_top_waiter(lock)) {
+@@ -722,8 +723,8 @@ static int rt_mutex_adjust_prio_chain(st
+ top_waiter = rt_mutex_top_waiter(lock);
+
+ /* [13] Drop the locks */
+- raw_spin_unlock_irqrestore(&task->pi_lock, flags);
+- raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock(&task->pi_lock);
++ raw_spin_unlock_irq(&lock->wait_lock);
+
+ /*
+ * Make the actual exit decisions [12], based on the stored
+@@ -746,7 +747,7 @@ static int rt_mutex_adjust_prio_chain(st
+ goto again;
+
+ out_unlock_pi:
+- raw_spin_unlock_irqrestore(&task->pi_lock, flags);
++ raw_spin_unlock_irq(&task->pi_lock);
+ out_put_task:
+ put_task_struct(task);
+
+@@ -756,7 +757,7 @@ static int rt_mutex_adjust_prio_chain(st
+ /*
+ * Try to take an rt-mutex
+ *
+- * Must be called with lock->wait_lock held.
++ * Must be called with lock->wait_lock held and interrupts disabled
+ *
+ * @lock: The lock to be acquired.
+ * @task: The task which wants to acquire the lock
+@@ -766,8 +767,6 @@ static int rt_mutex_adjust_prio_chain(st
+ static int try_to_take_rt_mutex(struct rt_mutex *lock, struct task_struct *task,
+ struct rt_mutex_waiter *waiter)
+ {
+- unsigned long flags;
+-
+ /*
+ * Before testing whether we can acquire @lock, we set the
+ * RT_MUTEX_HAS_WAITERS bit in @lock->owner. This forces all
+@@ -852,7 +851,7 @@ static int try_to_take_rt_mutex(struct r
+ * case, but conditionals are more expensive than a redundant
+ * store.
+ */
+- raw_spin_lock_irqsave(&task->pi_lock, flags);
++ raw_spin_lock(&task->pi_lock);
+ task->pi_blocked_on = NULL;
+ /*
+ * Finish the lock acquisition. @task is the new owner. If
+@@ -861,7 +860,7 @@ static int try_to_take_rt_mutex(struct r
+ */
+ if (rt_mutex_has_waiters(lock))
+ rt_mutex_enqueue_pi(task, rt_mutex_top_waiter(lock));
+- raw_spin_unlock_irqrestore(&task->pi_lock, flags);
++ raw_spin_unlock(&task->pi_lock);
+
+ takeit:
+ /* We got the lock. */
+@@ -883,7 +882,7 @@ static int try_to_take_rt_mutex(struct r
+ *
+ * Prepare waiter and propagate pi chain
+ *
+- * This must be called with lock->wait_lock held.
++ * This must be called with lock->wait_lock held and interrupts disabled
+ */
+ static int task_blocks_on_rt_mutex(struct rt_mutex *lock,
+ struct rt_mutex_waiter *waiter,
+@@ -894,7 +893,6 @@ static int task_blocks_on_rt_mutex(struc
+ struct rt_mutex_waiter *top_waiter = waiter;
+ struct rt_mutex *next_lock;
+ int chain_walk = 0, res;
+- unsigned long flags;
+
+ /*
+ * Early deadlock detection. We really don't want the task to
+@@ -908,7 +906,7 @@ static int task_blocks_on_rt_mutex(struc
+ if (owner == task)
+ return -EDEADLK;
+
+- raw_spin_lock_irqsave(&task->pi_lock, flags);
++ raw_spin_lock(&task->pi_lock);
+ __rt_mutex_adjust_prio(task);
+ waiter->task = task;
+ waiter->lock = lock;
+@@ -921,12 +919,12 @@ static int task_blocks_on_rt_mutex(struc
+
+ task->pi_blocked_on = waiter;
+
+- raw_spin_unlock_irqrestore(&task->pi_lock, flags);
++ raw_spin_unlock(&task->pi_lock);
+
+ if (!owner)
+ return 0;
+
+- raw_spin_lock_irqsave(&owner->pi_lock, flags);
++ raw_spin_lock(&owner->pi_lock);
+ if (waiter == rt_mutex_top_waiter(lock)) {
+ rt_mutex_dequeue_pi(owner, top_waiter);
+ rt_mutex_enqueue_pi(owner, waiter);
+@@ -941,7 +939,7 @@ static int task_blocks_on_rt_mutex(struc
+ /* Store the lock on which owner is blocked or NULL */
+ next_lock = task_blocked_on_lock(owner);
+
+- raw_spin_unlock_irqrestore(&owner->pi_lock, flags);
++ raw_spin_unlock(&owner->pi_lock);
+ /*
+ * Even if full deadlock detection is on, if the owner is not
+ * blocked itself, we can avoid finding this out in the chain
+@@ -957,12 +955,12 @@ static int task_blocks_on_rt_mutex(struc
+ */
+ get_task_struct(owner);
+
+- raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irq(&lock->wait_lock);
+
+ res = rt_mutex_adjust_prio_chain(owner, chwalk, lock,
+ next_lock, waiter, task);
+
+- raw_spin_lock(&lock->wait_lock);
++ raw_spin_lock_irq(&lock->wait_lock);
+
+ return res;
+ }
+@@ -971,15 +969,14 @@ static int task_blocks_on_rt_mutex(struc
+ * Remove the top waiter from the current tasks pi waiter tree and
+ * queue it up.
+ *
+- * Called with lock->wait_lock held.
++ * Called with lock->wait_lock held and interrupts disabled.
+ */
+ static void mark_wakeup_next_waiter(struct wake_q_head *wake_q,
+ struct rt_mutex *lock)
+ {
+ struct rt_mutex_waiter *waiter;
+- unsigned long flags;
+
+- raw_spin_lock_irqsave(¤t->pi_lock, flags);
++ raw_spin_lock(¤t->pi_lock);
+
+ waiter = rt_mutex_top_waiter(lock);
+
+@@ -1001,7 +998,7 @@ static void mark_wakeup_next_waiter(stru
+ */
+ lock->owner = (void *) RT_MUTEX_HAS_WAITERS;
+
+- raw_spin_unlock_irqrestore(¤t->pi_lock, flags);
++ raw_spin_unlock(¤t->pi_lock);
+
+ wake_q_add(wake_q, waiter->task);
+ }
+@@ -1009,7 +1006,7 @@ static void mark_wakeup_next_waiter(stru
+ /*
+ * Remove a waiter from a lock and give up
+ *
+- * Must be called with lock->wait_lock held and
++ * Must be called with lock->wait_lock held and interrupts disabled. I must
+ * have just failed to try_to_take_rt_mutex().
+ */
+ static void remove_waiter(struct rt_mutex *lock,
+@@ -1018,12 +1015,11 @@ static void remove_waiter(struct rt_mute
+ bool is_top_waiter = (waiter == rt_mutex_top_waiter(lock));
+ struct task_struct *owner = rt_mutex_owner(lock);
+ struct rt_mutex *next_lock;
+- unsigned long flags;
+
+- raw_spin_lock_irqsave(¤t->pi_lock, flags);
++ raw_spin_lock(¤t->pi_lock);
+ rt_mutex_dequeue(lock, waiter);
+ current->pi_blocked_on = NULL;
+- raw_spin_unlock_irqrestore(¤t->pi_lock, flags);
++ raw_spin_unlock(¤t->pi_lock);
+
+ /*
+ * Only update priority if the waiter was the highest priority
+@@ -1032,7 +1028,7 @@ static void remove_waiter(struct rt_mute
+ if (!owner || !is_top_waiter)
+ return;
+
+- raw_spin_lock_irqsave(&owner->pi_lock, flags);
++ raw_spin_lock(&owner->pi_lock);
+
+ rt_mutex_dequeue_pi(owner, waiter);
+
+@@ -1044,7 +1040,7 @@ static void remove_waiter(struct rt_mute
+ /* Store the lock on which owner is blocked or NULL */
+ next_lock = task_blocked_on_lock(owner);
+
+- raw_spin_unlock_irqrestore(&owner->pi_lock, flags);
++ raw_spin_unlock(&owner->pi_lock);
+
+ /*
+ * Don't walk the chain, if the owner task is not blocked
+@@ -1056,12 +1052,12 @@ static void remove_waiter(struct rt_mute
+ /* gets dropped in rt_mutex_adjust_prio_chain()! */
+ get_task_struct(owner);
+
+- raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irq(&lock->wait_lock);
+
+ rt_mutex_adjust_prio_chain(owner, RT_MUTEX_MIN_CHAINWALK, lock,
+ next_lock, NULL, current);
+
+- raw_spin_lock(&lock->wait_lock);
++ raw_spin_lock_irq(&lock->wait_lock);
+ }
+
+ /*
+@@ -1097,11 +1093,11 @@ void rt_mutex_adjust_pi(struct task_stru
+ * __rt_mutex_slowlock() - Perform the wait-wake-try-to-take loop
+ * @lock: the rt_mutex to take
+ * @state: the state the task should block in (TASK_INTERRUPTIBLE
+- * or TASK_UNINTERRUPTIBLE)
++ * or TASK_UNINTERRUPTIBLE)
+ * @timeout: the pre-initialized and started timer, or NULL for none
+ * @waiter: the pre-initialized rt_mutex_waiter
+ *
+- * lock->wait_lock must be held by the caller.
++ * Must be called with lock->wait_lock held and interrupts disabled
+ */
+ static int __sched
+ __rt_mutex_slowlock(struct rt_mutex *lock, int state,
+@@ -1129,13 +1125,13 @@ static int __sched
+ break;
+ }
+
+- raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irq(&lock->wait_lock);
+
+ debug_rt_mutex_print_deadlock(waiter);
+
+ schedule();
+
+- raw_spin_lock(&lock->wait_lock);
++ raw_spin_lock_irq(&lock->wait_lock);
+ set_current_state(state);
+ }
+
+@@ -1172,17 +1168,26 @@ rt_mutex_slowlock(struct rt_mutex *lock,
+ enum rtmutex_chainwalk chwalk)
+ {
+ struct rt_mutex_waiter waiter;
++ unsigned long flags;
+ int ret = 0;
+
+ debug_rt_mutex_init_waiter(&waiter);
+ RB_CLEAR_NODE(&waiter.pi_tree_entry);
+ RB_CLEAR_NODE(&waiter.tree_entry);
+
+- raw_spin_lock(&lock->wait_lock);
++ /*
++ * Technically we could use raw_spin_[un]lock_irq() here, but this can
++ * be called in early boot if the cmpxchg() fast path is disabled
++ * (debug, no architecture support). In this case we will acquire the
++ * rtmutex with lock->wait_lock held. But we cannot unconditionally
++ * enable interrupts in that early boot case. So we need to use the
++ * irqsave/restore variants.
++ */
++ raw_spin_lock_irqsave(&lock->wait_lock, flags);
+
+ /* Try to acquire the lock again: */
+ if (try_to_take_rt_mutex(lock, current, NULL)) {
+- raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irqrestore(&lock->wait_lock, flags);
+ return 0;
+ }
+
+@@ -1211,7 +1216,7 @@ rt_mutex_slowlock(struct rt_mutex *lock,
+ */
+ fixup_rt_mutex_waiters(lock);
+
+- raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irqrestore(&lock->wait_lock, flags);
+
+ /* Remove pending timer: */
+ if (unlikely(timeout))
+@@ -1227,6 +1232,7 @@ rt_mutex_slowlock(struct rt_mutex *lock,
+ */
+ static inline int rt_mutex_slowtrylock(struct rt_mutex *lock)
+ {
++ unsigned long flags;
+ int ret;
+
+ /*
+@@ -1238,10 +1244,10 @@ static inline int rt_mutex_slowtrylock(s
+ return 0;
+
+ /*
+- * The mutex has currently no owner. Lock the wait lock and
+- * try to acquire the lock.
++ * The mutex has currently no owner. Lock the wait lock and try to
++ * acquire the lock. We use irqsave here to support early boot calls.
+ */
+- raw_spin_lock(&lock->wait_lock);
++ raw_spin_lock_irqsave(&lock->wait_lock, flags);
+
+ ret = try_to_take_rt_mutex(lock, current, NULL);
+
+@@ -1251,7 +1257,7 @@ static inline int rt_mutex_slowtrylock(s
+ */
+ fixup_rt_mutex_waiters(lock);
+
+- raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irqrestore(&lock->wait_lock, flags);
+
+ return ret;
+ }
+@@ -1263,7 +1269,10 @@ static inline int rt_mutex_slowtrylock(s
+ static bool __sched rt_mutex_slowunlock(struct rt_mutex *lock,
+ struct wake_q_head *wake_q)
+ {
+- raw_spin_lock(&lock->wait_lock);
++ unsigned long flags;
++
++ /* irqsave required to support early boot calls */
++ raw_spin_lock_irqsave(&lock->wait_lock, flags);
+
+ debug_rt_mutex_unlock(lock);
+
+@@ -1302,10 +1311,10 @@ static bool __sched rt_mutex_slowunlock(
+ */
+ while (!rt_mutex_has_waiters(lock)) {
+ /* Drops lock->wait_lock ! */
+- if (unlock_rt_mutex_safe(lock) == true)
++ if (unlock_rt_mutex_safe(lock, flags) == true)
+ return false;
+ /* Relock the rtmutex and try again */
+- raw_spin_lock(&lock->wait_lock);
++ raw_spin_lock_irqsave(&lock->wait_lock, flags);
+ }
+
+ /*
+@@ -1316,7 +1325,7 @@ static bool __sched rt_mutex_slowunlock(
+ */
+ mark_wakeup_next_waiter(wake_q, lock);
+
+- raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irqrestore(&lock->wait_lock, flags);
+
+ /* check PI boosting */
+ return true;
+@@ -1596,10 +1605,10 @@ int rt_mutex_start_proxy_lock(struct rt_
+ {
+ int ret;
+
+- raw_spin_lock(&lock->wait_lock);
++ raw_spin_lock_irq(&lock->wait_lock);
+
+ if (try_to_take_rt_mutex(lock, task, NULL)) {
+- raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irq(&lock->wait_lock);
+ return 1;
+ }
+
+@@ -1620,7 +1629,7 @@ int rt_mutex_start_proxy_lock(struct rt_
+ if (unlikely(ret))
+ remove_waiter(lock, waiter);
+
+- raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irq(&lock->wait_lock);
+
+ debug_rt_mutex_print_deadlock(waiter);
+
+@@ -1668,7 +1677,7 @@ int rt_mutex_finish_proxy_lock(struct rt
+ {
+ int ret;
+
+- raw_spin_lock(&lock->wait_lock);
++ raw_spin_lock_irq(&lock->wait_lock);
+
+ set_current_state(TASK_INTERRUPTIBLE);
+
+@@ -1684,7 +1693,7 @@ int rt_mutex_finish_proxy_lock(struct rt
+ */
+ fixup_rt_mutex_waiters(lock);
+
+- raw_spin_unlock(&lock->wait_lock);
++ raw_spin_unlock_irq(&lock->wait_lock);
+
+ return ret;
+ }
diff --git a/debian/patches/features/all/rt/rtmutex-Use-chainwalking-control-enum.patch b/debian/patches/features/all/rt/rtmutex-Use-chainwalking-control-enum.patch
index 5a97e49..628c187 100644
--- a/debian/patches/features/all/rt/rtmutex-Use-chainwalking-control-enum.patch
+++ b/debian/patches/features/all/rt/rtmutex-Use-chainwalking-control-enum.patch
@@ -1,7 +1,7 @@
From: "bmouring at ni.com" <bmouring at ni.com>
Date: Tue, 15 Dec 2015 17:07:30 -0600
Subject: rtmutex: Use chainwalking control enum
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
In 8930ed80 (rtmutex: Cleanup deadlock detector debug logic),
chainwalking control enums were introduced to limit the deadlock
@@ -17,9 +17,9 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
-@@ -1020,7 +1020,7 @@ static void noinline __sched rt_spin_lo
+@@ -1017,7 +1017,7 @@ static void noinline __sched rt_spin_lo
__set_current_state_no_track(TASK_UNINTERRUPTIBLE);
- pi_unlock(&self->pi_lock);
+ raw_spin_unlock(&self->pi_lock);
- ret = task_blocks_on_rt_mutex(lock, &waiter, self, 0);
+ ret = task_blocks_on_rt_mutex(lock, &waiter, self, RT_MUTEX_MIN_CHAINWALK);
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 3e5b273..d864143 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
lockdep says:
| --------------------------------------------------------------------------
@@ -36,7 +36,7 @@ Signed-off-by: Sebastian Andrzej Siewior <sebastian at breakpoint.cc>
#include "rtmutex_common.h"
-@@ -1221,6 +1222,40 @@ EXPORT_SYMBOL(__rt_spin_lock_init);
+@@ -1219,6 +1220,40 @@ EXPORT_SYMBOL(__rt_spin_lock_init);
#endif /* PREEMPT_RT_FULL */
@@ -77,7 +77,7 @@ Signed-off-by: Sebastian Andrzej Siewior <sebastian at breakpoint.cc>
static inline int
try_to_take_rt_mutex(struct rt_mutex *lock, struct task_struct *task,
struct rt_mutex_waiter *waiter)
-@@ -1478,7 +1513,8 @@ void rt_mutex_adjust_pi(struct task_stru
+@@ -1473,7 +1508,8 @@ void rt_mutex_adjust_pi(struct task_stru
static int __sched
__rt_mutex_slowlock(struct rt_mutex *lock, int state,
struct hrtimer_sleeper *timeout,
@@ -87,7 +87,7 @@ Signed-off-by: Sebastian Andrzej Siewior <sebastian at breakpoint.cc>
{
int ret = 0;
-@@ -1501,6 +1537,12 @@ static int __sched
+@@ -1496,6 +1532,12 @@ static int __sched
break;
}
@@ -97,10 +97,10 @@ Signed-off-by: Sebastian Andrzej Siewior <sebastian at breakpoint.cc>
+ break;
+ }
+
- raw_spin_unlock(&lock->wait_lock);
+ raw_spin_unlock_irq(&lock->wait_lock);
debug_rt_mutex_print_deadlock(waiter);
-@@ -1535,13 +1577,90 @@ static void rt_mutex_handle_deadlock(int
+@@ -1530,13 +1572,90 @@ static void rt_mutex_handle_deadlock(int
}
}
@@ -191,17 +191,17 @@ Signed-off-by: Sebastian Andrzej Siewior <sebastian at breakpoint.cc>
+ struct ww_acquire_ctx *ww_ctx)
{
struct rt_mutex_waiter waiter;
- int ret = 0;
-@@ -1552,6 +1671,8 @@ rt_mutex_slowlock(struct rt_mutex *lock,
+ unsigned long flags;
+@@ -1556,6 +1675,8 @@ rt_mutex_slowlock(struct rt_mutex *lock,
/* Try to acquire the lock again: */
if (try_to_take_rt_mutex(lock, current, NULL)) {
+ if (ww_ctx)
+ ww_mutex_account_lock(lock, ww_ctx);
- raw_spin_unlock(&lock->wait_lock);
+ raw_spin_unlock_irqrestore(&lock->wait_lock, flags);
return 0;
}
-@@ -1566,13 +1687,23 @@ rt_mutex_slowlock(struct rt_mutex *lock,
+@@ -1570,13 +1691,23 @@ rt_mutex_slowlock(struct rt_mutex *lock,
if (likely(!ret))
/* sleep on the mutex */
@@ -227,7 +227,7 @@ Signed-off-by: Sebastian Andrzej Siewior <sebastian at breakpoint.cc>
}
/*
-@@ -1701,31 +1832,36 @@ static bool __sched rt_mutex_slowunlock(
+@@ -1709,31 +1840,36 @@ static bool __sched rt_mutex_slowunlock(
*/
static inline int
rt_mutex_fastlock(struct rt_mutex *lock, int state,
@@ -268,7 +268,7 @@ Signed-off-by: Sebastian Andrzej Siewior <sebastian at breakpoint.cc>
}
static inline int
-@@ -1772,7 +1908,7 @@ void __sched rt_mutex_lock(struct rt_mut
+@@ -1780,7 +1916,7 @@ void __sched rt_mutex_lock(struct rt_mut
{
might_sleep();
@@ -277,7 +277,7 @@ Signed-off-by: Sebastian Andrzej Siewior <sebastian at breakpoint.cc>
}
EXPORT_SYMBOL_GPL(rt_mutex_lock);
-@@ -1789,7 +1925,7 @@ int __sched rt_mutex_lock_interruptible(
+@@ -1797,7 +1933,7 @@ int __sched rt_mutex_lock_interruptible(
{
might_sleep();
@@ -286,7 +286,7 @@ Signed-off-by: Sebastian Andrzej Siewior <sebastian at breakpoint.cc>
}
EXPORT_SYMBOL_GPL(rt_mutex_lock_interruptible);
-@@ -1802,7 +1938,7 @@ int rt_mutex_timed_futex_lock(struct rt_
+@@ -1810,7 +1946,7 @@ int rt_mutex_timed_futex_lock(struct rt_
might_sleep();
return rt_mutex_timed_fastlock(lock, TASK_INTERRUPTIBLE, timeout,
@@ -295,7 +295,7 @@ Signed-off-by: Sebastian Andrzej Siewior <sebastian at breakpoint.cc>
rt_mutex_slowlock);
}
-@@ -1821,7 +1957,7 @@ int __sched rt_mutex_lock_killable(struc
+@@ -1829,7 +1965,7 @@ int __sched rt_mutex_lock_killable(struc
{
might_sleep();
@@ -304,7 +304,7 @@ Signed-off-by: Sebastian Andrzej Siewior <sebastian at breakpoint.cc>
}
EXPORT_SYMBOL_GPL(rt_mutex_lock_killable);
-@@ -1845,6 +1981,7 @@ rt_mutex_timed_lock(struct rt_mutex *loc
+@@ -1853,6 +1989,7 @@ rt_mutex_timed_lock(struct rt_mutex *loc
return rt_mutex_timed_fastlock(lock, TASK_INTERRUPTIBLE, timeout,
RT_MUTEX_MIN_CHAINWALK,
@@ -312,7 +312,7 @@ Signed-off-by: Sebastian Andrzej Siewior <sebastian at breakpoint.cc>
rt_mutex_slowlock);
}
EXPORT_SYMBOL_GPL(rt_mutex_timed_lock);
-@@ -2099,7 +2236,7 @@ int rt_mutex_finish_proxy_lock(struct rt
+@@ -2107,7 +2244,7 @@ int rt_mutex_finish_proxy_lock(struct rt
set_current_state(TASK_INTERRUPTIBLE);
/* sleep on the mutex */
@@ -321,7 +321,7 @@ Signed-off-by: Sebastian Andrzej Siewior <sebastian at breakpoint.cc>
if (unlikely(ret))
remove_waiter(lock, waiter);
-@@ -2115,24 +2252,88 @@ int rt_mutex_finish_proxy_lock(struct rt
+@@ -2123,24 +2260,88 @@ int rt_mutex_finish_proxy_lock(struct rt
return ret;
}
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 a55e6c0..c99b302 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 c7e99eb..e20338b 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
@@ -146,7 +146,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/*
* We can speed up the acquire/release, if there's no debugging state to be
* set up.
-@@ -355,7 +360,8 @@ int max_lock_depth = 1024;
+@@ -357,7 +362,8 @@ int max_lock_depth = 1024;
static inline struct rt_mutex *task_blocked_on_lock(struct task_struct *p)
{
@@ -156,7 +156,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
/*
-@@ -492,7 +498,7 @@ static int rt_mutex_adjust_prio_chain(st
+@@ -493,7 +499,7 @@ static int rt_mutex_adjust_prio_chain(st
* reached or the state of the chain has changed while we
* dropped the locks.
*/
@@ -165,10 +165,10 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
goto out_unlock_pi;
/*
-@@ -909,6 +915,23 @@ static int task_blocks_on_rt_mutex(struc
+@@ -907,6 +913,23 @@ static int task_blocks_on_rt_mutex(struc
return -EDEADLK;
- raw_spin_lock_irqsave(&task->pi_lock, flags);
+ raw_spin_lock(&task->pi_lock);
+
+ /*
+ * In the case of futex requeue PI, this will be a proxy
@@ -180,7 +180,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+ * the task if PI_WAKEUP_INPROGRESS is set.
+ */
+ if (task != current && task->pi_blocked_on == PI_WAKEUP_INPROGRESS) {
-+ raw_spin_unlock_irqrestore(&task->pi_lock, flags);
++ raw_spin_unlock(&task->pi_lock);
+ return -EAGAIN;
+ }
+
@@ -189,7 +189,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
__rt_mutex_adjust_prio(task);
waiter->task = task;
waiter->lock = lock;
-@@ -932,7 +955,7 @@ static int task_blocks_on_rt_mutex(struc
+@@ -930,7 +953,7 @@ static int task_blocks_on_rt_mutex(struc
rt_mutex_enqueue_pi(owner, waiter);
__rt_mutex_adjust_prio(owner);
@@ -198,16 +198,16 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
chain_walk = 1;
} else if (rt_mutex_cond_detect_deadlock(waiter, chwalk)) {
chain_walk = 1;
-@@ -1017,7 +1040,7 @@ static void remove_waiter(struct rt_mute
+@@ -1014,7 +1037,7 @@ static void remove_waiter(struct rt_mute
{
bool is_top_waiter = (waiter == rt_mutex_top_waiter(lock));
struct task_struct *owner = rt_mutex_owner(lock);
- struct rt_mutex *next_lock;
+ struct rt_mutex *next_lock = NULL;
- unsigned long flags;
- raw_spin_lock_irqsave(¤t->pi_lock, flags);
-@@ -1042,7 +1065,8 @@ static void remove_waiter(struct rt_mute
+ raw_spin_lock(¤t->pi_lock);
+ rt_mutex_dequeue(lock, waiter);
+@@ -1038,7 +1061,8 @@ static void remove_waiter(struct rt_mute
__rt_mutex_adjust_prio(owner);
/* Store the lock on which owner is blocked or NULL */
@@ -215,9 +215,9 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+ if (rt_mutex_real_waiter(owner->pi_blocked_on))
+ next_lock = task_blocked_on_lock(owner);
- raw_spin_unlock_irqrestore(&owner->pi_lock, flags);
+ raw_spin_unlock(&owner->pi_lock);
-@@ -1078,7 +1102,7 @@ void rt_mutex_adjust_pi(struct task_stru
+@@ -1074,7 +1098,7 @@ void rt_mutex_adjust_pi(struct task_stru
raw_spin_lock_irqsave(&task->pi_lock, flags);
waiter = task->pi_blocked_on;
diff --git a/debian/patches/features/all/rt/rtmutex-lock-killable.patch b/debian/patches/features/all/rt/rtmutex-lock-killable.patch
index 734f66a..fb57d79 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Add "killable" type to rtmutex. We need this since rtmutex are used as
"normal" mutexes which do use this type.
@@ -24,7 +24,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
-@@ -1458,6 +1458,25 @@ int rt_mutex_timed_futex_lock(struct rt_
+@@ -1467,6 +1467,25 @@ int rt_mutex_timed_futex_lock(struct rt_
}
/**
diff --git a/debian/patches/features/all/rt/rtmutex-push-down-migrate_disable-into-rt_spin_lock.patch b/debian/patches/features/all/rt/rtmutex-push-down-migrate_disable-into-rt_spin_lock.patch
new file mode 100644
index 0000000..184e502
--- /dev/null
+++ b/debian/patches/features/all/rt/rtmutex-push-down-migrate_disable-into-rt_spin_lock.patch
@@ -0,0 +1,272 @@
+From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+Date: Fri, 5 Feb 2016 18:26:11 +0100
+Subject: rtmutex: push down migrate_disable() into rt_spin_lock()
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
+
+No point in having the migrate disable/enable invocations in all the
+macro/inlines. That's just more code for no win as we do a function
+call anyway. Move it to the core code and save quite some text size.
+
+ text data bss dec filename
+11034127 3676912 14901248 29612287 vmlinux.before
+10990437 3676848 14901248 29568533 vmlinux.after
+
+~-40KiB
+
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ include/linux/locallock.h | 6 +++---
+ include/linux/spinlock_rt.h | 25 +++++++------------------
+ kernel/cpu.c | 4 ++--
+ kernel/locking/lglock.c | 2 +-
+ kernel/locking/rt.c | 2 --
+ kernel/locking/rtmutex.c | 44 +++++++++++++++++++++++++++++++++++++++++---
+ 6 files changed, 54 insertions(+), 29 deletions(-)
+
+--- a/include/linux/locallock.h
++++ b/include/linux/locallock.h
+@@ -43,9 +43,9 @@ struct local_irq_lock {
+ * for CONFIG_PREEMPT_BASE map to the normal spin_* calls.
+ */
+ #ifdef CONFIG_PREEMPT_RT_FULL
+-# define spin_lock_local(lock) rt_spin_lock(lock)
+-# define spin_trylock_local(lock) rt_spin_trylock(lock)
+-# define spin_unlock_local(lock) rt_spin_unlock(lock)
++# define spin_lock_local(lock) rt_spin_lock__no_mg(lock)
++# define spin_trylock_local(lock) rt_spin_trylock__no_mg(lock)
++# define spin_unlock_local(lock) rt_spin_unlock__no_mg(lock)
+ #else
+ # define spin_lock_local(lock) spin_lock(lock)
+ # define spin_trylock_local(lock) spin_trylock(lock)
+--- a/include/linux/spinlock_rt.h
++++ b/include/linux/spinlock_rt.h
+@@ -18,6 +18,10 @@ do { \
+ __rt_spin_lock_init(slock, #slock, &__key); \
+ } while (0)
+
++void __lockfunc rt_spin_lock__no_mg(spinlock_t *lock);
++void __lockfunc rt_spin_unlock__no_mg(spinlock_t *lock);
++int __lockfunc rt_spin_trylock__no_mg(spinlock_t *lock);
++
+ extern void __lockfunc rt_spin_lock(spinlock_t *lock);
+ extern unsigned long __lockfunc rt_spin_lock_trace_flags(spinlock_t *lock);
+ extern void __lockfunc rt_spin_lock_nested(spinlock_t *lock, int subclass);
+@@ -32,20 +36,16 @@ extern int atomic_dec_and_spin_lock(atom
+ * lockdep-less calls, for derived types like rwlock:
+ * (for trylock they can use rt_mutex_trylock() directly.
+ */
++extern void __lockfunc __rt_spin_lock__no_mg(struct rt_mutex *lock);
+ extern void __lockfunc __rt_spin_lock(struct rt_mutex *lock);
+ extern void __lockfunc __rt_spin_unlock(struct rt_mutex *lock);
+ extern int __lockfunc __rt_spin_trylock(struct rt_mutex *lock);
+
+-#define spin_lock(lock) \
+- do { \
+- migrate_disable(); \
+- rt_spin_lock(lock); \
+- } while (0)
++#define spin_lock(lock) rt_spin_lock(lock)
+
+ #define spin_lock_bh(lock) \
+ do { \
+ local_bh_disable(); \
+- migrate_disable(); \
+ rt_spin_lock(lock); \
+ } while (0)
+
+@@ -56,24 +56,19 @@ extern int __lockfunc __rt_spin_trylock(
+ #define spin_trylock(lock) \
+ ({ \
+ int __locked; \
+- migrate_disable(); \
+ __locked = spin_do_trylock(lock); \
+- if (!__locked) \
+- migrate_enable(); \
+ __locked; \
+ })
+
+ #ifdef CONFIG_LOCKDEP
+ # define spin_lock_nested(lock, subclass) \
+ do { \
+- migrate_disable(); \
+ rt_spin_lock_nested(lock, subclass); \
+ } while (0)
+
+ #define spin_lock_bh_nested(lock, subclass) \
+ do { \
+ local_bh_disable(); \
+- migrate_disable(); \
+ rt_spin_lock_nested(lock, subclass); \
+ } while (0)
+
+@@ -81,7 +76,6 @@ extern int __lockfunc __rt_spin_trylock(
+ do { \
+ typecheck(unsigned long, flags); \
+ flags = 0; \
+- migrate_disable(); \
+ rt_spin_lock_nested(lock, subclass); \
+ } while (0)
+ #else
+@@ -117,16 +111,11 @@ static inline unsigned long spin_lock_tr
+ /* FIXME: we need rt_spin_lock_nest_lock */
+ #define spin_lock_nest_lock(lock, nest_lock) spin_lock_nested(lock, 0)
+
+-#define spin_unlock(lock) \
+- do { \
+- rt_spin_unlock(lock); \
+- migrate_enable(); \
+- } while (0)
++#define spin_unlock(lock) rt_spin_unlock(lock)
+
+ #define spin_unlock_bh(lock) \
+ do { \
+ rt_spin_unlock(lock); \
+- migrate_enable(); \
+ local_bh_enable(); \
+ } while (0)
+
+--- a/kernel/cpu.c
++++ b/kernel/cpu.c
+@@ -127,8 +127,8 @@ struct hotplug_pcp {
+ };
+
+ #ifdef CONFIG_PREEMPT_RT_FULL
+-# define hotplug_lock(hp) rt_spin_lock(&(hp)->lock)
+-# define hotplug_unlock(hp) rt_spin_unlock(&(hp)->lock)
++# define hotplug_lock(hp) rt_spin_lock__no_mg(&(hp)->lock)
++# define hotplug_unlock(hp) rt_spin_unlock__no_mg(&(hp)->lock)
+ #else
+ # define hotplug_lock(hp) mutex_lock(&(hp)->mutex)
+ # define hotplug_unlock(hp) mutex_unlock(&(hp)->mutex)
+--- a/kernel/locking/lglock.c
++++ b/kernel/locking/lglock.c
+@@ -10,7 +10,7 @@
+ # define lg_do_unlock(l) arch_spin_unlock(l)
+ #else
+ # define lg_lock_ptr struct rt_mutex
+-# define lg_do_lock(l) __rt_spin_lock(l)
++# define lg_do_lock(l) __rt_spin_lock__no_mg(l)
+ # define lg_do_unlock(l) __rt_spin_unlock(l)
+ #endif
+ /*
+--- a/kernel/locking/rt.c
++++ b/kernel/locking/rt.c
+@@ -235,7 +235,6 @@ EXPORT_SYMBOL(rt_read_trylock);
+ void __lockfunc rt_write_lock(rwlock_t *rwlock)
+ {
+ rwlock_acquire(&rwlock->dep_map, 0, 0, _RET_IP_);
+- migrate_disable();
+ __rt_spin_lock(&rwlock->lock);
+ }
+ EXPORT_SYMBOL(rt_write_lock);
+@@ -249,7 +248,6 @@ void __lockfunc rt_read_lock(rwlock_t *r
+ * recursive read locks succeed when current owns the lock
+ */
+ if (rt_mutex_owner(lock) != current) {
+- migrate_disable();
+ rwlock_acquire(&rwlock->dep_map, 0, 0, _RET_IP_);
+ __rt_spin_lock(lock);
+ }
+--- a/kernel/locking/rtmutex.c
++++ b/kernel/locking/rtmutex.c
+@@ -1103,8 +1103,16 @@ static void noinline __sched rt_spin_lo
+ rt_mutex_adjust_prio(current);
+ }
+
++void __lockfunc rt_spin_lock__no_mg(spinlock_t *lock)
++{
++ rt_spin_lock_fastlock(&lock->lock, rt_spin_lock_slowlock);
++ spin_acquire(&lock->dep_map, 0, 0, _RET_IP_);
++}
++EXPORT_SYMBOL(rt_spin_lock__no_mg);
++
+ void __lockfunc rt_spin_lock(spinlock_t *lock)
+ {
++ migrate_disable();
+ rt_spin_lock_fastlock(&lock->lock, rt_spin_lock_slowlock);
+ spin_acquire(&lock->dep_map, 0, 0, _RET_IP_);
+ }
+@@ -1112,24 +1120,41 @@ EXPORT_SYMBOL(rt_spin_lock);
+
+ void __lockfunc __rt_spin_lock(struct rt_mutex *lock)
+ {
++ migrate_disable();
+ rt_spin_lock_fastlock(lock, rt_spin_lock_slowlock);
+ }
+ EXPORT_SYMBOL(__rt_spin_lock);
+
++void __lockfunc __rt_spin_lock__no_mg(struct rt_mutex *lock)
++{
++ rt_spin_lock_fastlock(lock, rt_spin_lock_slowlock);
++}
++EXPORT_SYMBOL(__rt_spin_lock__no_mg);
++
+ #ifdef CONFIG_DEBUG_LOCK_ALLOC
+ void __lockfunc rt_spin_lock_nested(spinlock_t *lock, int subclass)
+ {
++ migrate_disable();
+ rt_spin_lock_fastlock(&lock->lock, rt_spin_lock_slowlock);
+ spin_acquire(&lock->dep_map, subclass, 0, _RET_IP_);
+ }
+ EXPORT_SYMBOL(rt_spin_lock_nested);
+ #endif
+
++void __lockfunc rt_spin_unlock__no_mg(spinlock_t *lock)
++{
++ /* NOTE: we always pass in '1' for nested, for simplicity */
++ spin_release(&lock->dep_map, 1, _RET_IP_);
++ rt_spin_lock_fastunlock(&lock->lock, rt_spin_lock_slowunlock);
++}
++EXPORT_SYMBOL(rt_spin_unlock__no_mg);
++
+ void __lockfunc rt_spin_unlock(spinlock_t *lock)
+ {
+ /* NOTE: we always pass in '1' for nested, for simplicity */
+ spin_release(&lock->dep_map, 1, _RET_IP_);
+ rt_spin_lock_fastunlock(&lock->lock, rt_spin_lock_slowunlock);
++ migrate_enable();
+ }
+ EXPORT_SYMBOL(rt_spin_unlock);
+
+@@ -1156,12 +1181,27 @@ int __lockfunc __rt_spin_trylock(struct
+ return rt_mutex_trylock(lock);
+ }
+
++int __lockfunc rt_spin_trylock__no_mg(spinlock_t *lock)
++{
++ int ret;
++
++ ret = rt_mutex_trylock(&lock->lock);
++ if (ret)
++ spin_acquire(&lock->dep_map, 0, 1, _RET_IP_);
++ return ret;
++}
++EXPORT_SYMBOL(rt_spin_trylock__no_mg);
++
+ int __lockfunc rt_spin_trylock(spinlock_t *lock)
+ {
+- int ret = rt_mutex_trylock(&lock->lock);
++ int ret;
+
++ migrate_disable();
++ ret = rt_mutex_trylock(&lock->lock);
+ if (ret)
+ spin_acquire(&lock->dep_map, 0, 1, _RET_IP_);
++ else
++ migrate_enable();
+ return ret;
+ }
+ EXPORT_SYMBOL(rt_spin_trylock);
+@@ -1200,12 +1240,10 @@ int atomic_dec_and_spin_lock(atomic_t *a
+ /* Subtract 1 from counter unless that drops it to 0 (ie. it was 1) */
+ if (atomic_add_unless(atomic, -1, 1))
+ return 0;
+- migrate_disable();
+ rt_spin_lock(lock);
+ if (atomic_dec_and_test(atomic))
+ return 1;
+ rt_spin_unlock(lock);
+- migrate_enable();
+ return 0;
+ }
+ EXPORT_SYMBOL(atomic_dec_and_spin_lock);
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 dc7a403..b77fcaa 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
@@ -14,7 +14,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
-@@ -1469,7 +1469,11 @@ EXPORT_SYMBOL_GPL(rt_mutex_timed_lock);
+@@ -1478,7 +1478,11 @@ EXPORT_SYMBOL_GPL(rt_mutex_timed_lock);
*/
int __sched rt_mutex_trylock(struct rt_mutex *lock)
{
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 f7713d1..21897c8 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
The RCU header pulls in spinlock.h and fails due not yet defined types:
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 d266152..f41c54c 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 8678f1c..5a7b61c 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 520267b..b8686d6 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
__put_task_struct() does quite some expensive work. We don't want to
burden random tasks with that.
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 d6e5990..df12407 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 8727490..9a30dc8 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 9ec18bb..fb42eaa 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 8057436..7f14b58 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 92e2c87..51d72d1 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Takes sleeping locks and calls into the memory allocator, so nothing
we want to do in task switch and oder atomic contexts.
diff --git a/debian/patches/features/all/rt/sched-provide-a-tsk_nr_cpus_allowed-helper.patch b/debian/patches/features/all/rt/sched-provide-a-tsk_nr_cpus_allowed-helper.patch
index 8ee93b4..f6737d8 100644
--- a/debian/patches/features/all/rt/sched-provide-a-tsk_nr_cpus_allowed-helper.patch
+++ b/debian/patches/features/all/rt/sched-provide-a-tsk_nr_cpus_allowed-helper.patch
@@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx at linutronix.de>
Date: Mon, 18 Jan 2016 17:21:59 +0100
Subject: sched: provide a tsk_nr_cpus_allowed() helper
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
tsk_nr_cpus_allowed() is an accessor for task->nr_cpus_allowed which allows
us to change the representation of ->nr_cpus_allowed if required.
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 bdd8df1..3f09510 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
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 4552234..f414bdb 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-use-tsk_cpus_allowed-instead-of-accessing-cpus.patch b/debian/patches/features/all/rt/sched-use-tsk_cpus_allowed-instead-of-accessing-cpus.patch
index 76ab873..13d5975 100644
--- a/debian/patches/features/all/rt/sched-use-tsk_cpus_allowed-instead-of-accessing-cpus.patch
+++ b/debian/patches/features/all/rt/sched-use-tsk_cpus_allowed-instead-of-accessing-cpus.patch
@@ -2,7 +2,7 @@ From: Thomas Gleixner <tglx at linutronix.de>
Date: Mon, 18 Jan 2016 17:10:39 +0100
Subject: sched: use tsk_cpus_allowed() instead of accessing
->cpus_allowed
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Use the future-safe accessor for struct task_struct's.
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 4d29058..a43c42d 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 4d9f12b..f78a590 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 38a14ae..9cc2a77 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 64e8d2c..2faca4f 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 272de11..9555fbd 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 1bd5154..0b2febc 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 d52e3fc..2a19174 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
To avoid allocation allow rt tasks to cache one sigqueue struct in
task struct.
diff --git a/debian/patches/features/all/rt/skbufhead-raw-lock.patch b/debian/patches/features/all/rt/skbufhead-raw-lock.patch
index a225c85..2265b57 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
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 1acfe0e..736a004 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 6c288a0..75e17c2 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 2a11c06..ae49a30 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 21b4055..e7671a9 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 70a3d73..780786a 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
raise_softirq_irqoff() disables interrupts and wakes the softirq
daemon, but after reenabling interrupts there is no preemption check,
diff --git a/debian/patches/features/all/rt/softirq-split-locks.patch b/debian/patches/features/all/rt/softirq-split-locks.patch
index 3c38f4f..caff627 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
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 38bb454..49096fc 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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
@@ -65,7 +65,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
#else /* !PREEMPT_RT_FULL */
-@@ -618,8 +632,12 @@ void thread_do_softirq(void)
+@@ -620,8 +634,12 @@ void thread_do_softirq(void)
static void do_raise_softirq_irqoff(unsigned int nr)
{
@@ -79,7 +79,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
/*
* If we are not in a hard interrupt and inside a bh disabled
-@@ -628,16 +646,30 @@ static void do_raise_softirq_irqoff(unsi
+@@ -630,16 +648,30 @@ static void do_raise_softirq_irqoff(unsi
* delegate it to ksoftirqd.
*/
if (!in_irq() && current->softirq_nestcnt)
@@ -114,7 +114,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
}
/*
-@@ -663,7 +695,7 @@ void raise_softirq_irqoff(unsigned int n
+@@ -665,7 +697,7 @@ void raise_softirq_irqoff(unsigned int n
* raise a WARN() if the condition is met.
*/
if (!current->softirq_nestcnt)
@@ -123,7 +123,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
}
static inline int ksoftirqd_softirq_pending(void)
-@@ -676,22 +708,37 @@ static inline void _local_bh_enable_nort
+@@ -678,22 +710,37 @@ static inline void _local_bh_enable_nort
static inline void ksoftirqd_set_sched_params(unsigned int cpu)
{
@@ -164,7 +164,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
#endif /* PREEMPT_RT_FULL */
/*
* Enter an interrupt context.
-@@ -741,6 +788,9 @@ static inline void invoke_softirq(void)
+@@ -743,6 +790,9 @@ static inline void invoke_softirq(void)
if (__this_cpu_read(ksoftirqd) &&
__this_cpu_read(ksoftirqd)->softirqs_raised)
wakeup_softirqd();
@@ -174,7 +174,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
local_irq_restore(flags);
#endif
}
-@@ -1173,17 +1223,30 @@ static struct notifier_block cpu_nfb = {
+@@ -1175,17 +1225,30 @@ static struct notifier_block cpu_nfb = {
static struct smp_hotplug_thread softirq_threads = {
.store = &ksoftirqd,
.setup = ksoftirqd_set_sched_params,
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 9377108..4fdbfdc 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 38f0082..e02109f 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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/stomp-machine-create-lg_global_trylock_relax-primiti.patch b/debian/patches/features/all/rt/stomp-machine-create-lg_global_trylock_relax-primiti.patch
index 0381393..1df5f45 100644
--- a/debian/patches/features/all/rt/stomp-machine-create-lg_global_trylock_relax-primiti.patch
+++ b/debian/patches/features/all/rt/stomp-machine-create-lg_global_trylock_relax-primiti.patch
@@ -1,7 +1,7 @@
From: Mike Galbraith <umgwanakikbuti at gmail.com>
Date: Fri, 2 May 2014 13:13:22 +0200
Subject: stomp-machine: create lg_global_trylock_relax() primitive
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Create lg_global_trylock_relax() for use by stopper thread when it cannot
schedule, to deal with stop_cpus_lock, which is now an lglock.
@@ -73,7 +73,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+#endif
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
-@@ -1153,6 +1153,11 @@ void __lockfunc rt_spin_unlock_wait(spin
+@@ -1151,6 +1151,11 @@ void __lockfunc rt_spin_unlock_wait(spin
}
EXPORT_SYMBOL(rt_spin_unlock_wait);
diff --git a/debian/patches/features/all/rt/stomp-machine-use-lg_global_trylock_relax-to-dead-wi.patch b/debian/patches/features/all/rt/stomp-machine-use-lg_global_trylock_relax-to-dead-wi.patch
index 8f23be9..ee18a9b 100644
--- a/debian/patches/features/all/rt/stomp-machine-use-lg_global_trylock_relax-to-dead-wi.patch
+++ b/debian/patches/features/all/rt/stomp-machine-use-lg_global_trylock_relax-to-dead-wi.patch
@@ -1,7 +1,7 @@
From: Mike Galbraith <umgwanakikbuti at gmail.com>
Date: Fri, 2 May 2014 13:13:34 +0200
Subject: stomp-machine: use lg_global_trylock_relax() to dead with stop_cpus_lock lglock
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
If the stop machinery is called from inactive CPU we cannot use
lg_global_lock(), because some other stomp machine invocation might be
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 fc2cc3b..2d95fff 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 654adfe..9563305 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 2aa7f5a..4221be9 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 d252a8a..b419086 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 7ea523a..d1f6153 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 baf147d..25eead9 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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/tasklist-lock-fix-section-conflict.patch b/debian/patches/features/all/rt/tasklist-lock-fix-section-conflict.patch
index a4ef8cb..2d48fbc 100644
--- a/debian/patches/features/all/rt/tasklist-lock-fix-section-conflict.patch
+++ b/debian/patches/features/all/rt/tasklist-lock-fix-section-conflict.patch
@@ -1,7 +1,7 @@
Subject: rwlocks: Fix section mismatch
From: John Kacur <jkacur at redhat.com>
Date: Mon, 19 Sep 2011 11:09:27 +0200 (CEST)
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
This fixes the following build error for the preempt-rt kernel.
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 0fbd246..a4e3c37 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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/timekeeping-split-jiffies-lock.patch b/debian/patches/features/all/rt/timekeeping-split-jiffies-lock.patch
index 7aee576..102c9f4 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 61b55b0..af581fb 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 609723a..e807d3d 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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/timers-avoid-the-base-null-otptimization-on-rt.patch b/debian/patches/features/all/rt/timers-avoid-the-base-null-otptimization-on-rt.patch
index ba23aef..8e50686 100644
--- a/debian/patches/features/all/rt/timers-avoid-the-base-null-otptimization-on-rt.patch
+++ b/debian/patches/features/all/rt/timers-avoid-the-base-null-otptimization-on-rt.patch
@@ -1,7 +1,7 @@
Subject: timers: Avoid the switch timers base set to NULL trick on RT
From: Thomas Gleixner <tglx at linutronix.de>
Date: Thu, 21 Jul 2011 15:23:39 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
On RT that code is preemptible, so we cannot assign NULL to timers
base as a preempter would spin forever in lock_timer_base().
diff --git a/debian/patches/features/all/rt/timers-preempt-rt-support.patch b/debian/patches/features/all/rt/timers-preempt-rt-support.patch
index 631b387..098fa55 100644
--- a/debian/patches/features/all/rt/timers-preempt-rt-support.patch
+++ b/debian/patches/features/all/rt/timers-preempt-rt-support.patch
@@ -1,7 +1,7 @@
From: Ingo Molnar <mingo at elte.hu>
Date: Fri, 3 Jul 2009 08:30:20 -0500
Subject: timers: Preempt-rt support
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
The base->lock is a sleeping lock. Try not to workaround with a
spin_trylock(). The rt-mutex lock is not irq save even the try-lock
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 61bbd09..1471be5 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 3bc8114..d047953 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
The sched_switch tracer has got a new argument. Fix the latency tracer
accordingly.
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 159d8de..3e9c867 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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/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 70759e0..fadc781 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 2f06375..8b94a7b 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 df49bc9..bb459e4 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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/vtime-split-lock-and-seqcount.patch b/debian/patches/features/all/rt/vtime-split-lock-and-seqcount.patch
index 66a8464..3b1d813 100644
--- a/debian/patches/features/all/rt/vtime-split-lock-and-seqcount.patch
+++ b/debian/patches/features/all/rt/vtime-split-lock-and-seqcount.patch
@@ -1,7 +1,7 @@
Subject: vtime: Split lock and seqcount
From: Thomas Gleixner <tglx at linutronix.de>
Date: Tue, 23 Jul 2013 15:45:51 +0200
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Replace vtime_seqlock seqlock with a simple seqcounter and a rawlock
so it can taken in atomic context on RT.
diff --git a/debian/patches/features/all/rt/wait-simple-implementation.patch b/debian/patches/features/all/rt/wait-simple-implementation.patch
index a76cfa0..f0df47f 100644
--- a/debian/patches/features/all/rt/wait-simple-implementation.patch
+++ b/debian/patches/features/all/rt/wait-simple-implementation.patch
@@ -12,7 +12,7 @@ should go mainline as well, as it lowers memory consumption and
runtime overhead.
Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
smp_mb() added by Steven Rostedt to fix a race condition with swait
wakeups vs adding items to the list.
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 210d36f..c70d59a 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 ab57e9b..696e4f1 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 a95ba0d..418d8b8 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 73ad714..2477db0 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
---
kernel/sched/core.c | 80 ++++++++------------------------------------
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 57aae7d..d6d8a71 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 82de7e4..3424613 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 78978a8..7044fe5 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 0fc2e0f..c899e5b 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Shrug. Lots of hobbyists have a beast in their basement, right?
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 3668ff2..218f833 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 66afc7f..254714e 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 260e514..ca146bb 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 8f92f2f..68af0db 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.tar.xz
Non constant TSC is a nightmare on bare metal already, but with
virtualization it becomes a complete disaster because the workarounds
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 4b20e54..687ce88 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 334cf9a..f5707e0 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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-preempt-lazy.patch b/debian/patches/features/all/rt/x86-preempt-lazy.patch
index e1774d3..ad00fe4 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 5f24b4b..781d3c7 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 38c0384..6881c97 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 db15c84..265a454 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/4.4/patches-4.4.1-rt5.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4.1-rt6.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 ab3429f..eda31f7 100644
--- a/debian/patches/series-rt
+++ b/debian/patches/series-rt
@@ -5,6 +5,8 @@
############################################################
# UPSTREAM changes queued
############################################################
+features/all/rt/rtmutex-Make-wait_lock-irq-safe.patch
+features/all/rt/arm64-replace-read_lock-to-rcu-lock-in-call_step_hoo.patch
############################################################
# UPSTREAM FIXES, patches pending
@@ -234,6 +236,7 @@ features/all/rt/slub-disable-SLUB_CPU_PARTIAL.patch
features/all/rt/mm-page-alloc-use-local-lock-on-target-cpu.patch
features/all/rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch
features/all/rt/mm-memcontrol-do_not_disable_irq.patch
+features/all/rt/mm-backing-dev-don-t-disable-IRQs-in-wb_congested_pu.patch
# RADIX TREE
features/all/rt/radix-tree-rt-aware.patch
@@ -299,6 +302,8 @@ features/all/rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.
features/all/rt/softirq-preempt-fix-3-re.patch
features/all/rt/softirq-disable-softirq-stacks-for-rt.patch
features/all/rt/softirq-split-locks.patch
+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/rtmutex-trylock-is-okay-on-RT.patch
@@ -334,6 +339,7 @@ features/all/rt/peter_zijlstra-frob-rcu.patch
features/all/rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch
features/all/rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch
features/all/rt/rcutree-rcu_bh_qs-disable-irq-while-calling-rcu_pree.patch
+features/all/rt/rcu-disable-more-spots-of-rcu_bh.patch
# LGLOCKS - lovely
features/all/rt/lglocks-rt.patch
@@ -341,6 +347,7 @@ features/all/rt/lglocks-rt.patch
# STOP machine (depend on lglock & rtmutex)
features/all/rt/stomp-machine-create-lg_global_trylock_relax-primiti.patch
features/all/rt/stomp-machine-use-lg_global_trylock_relax-to-dead-wi.patch
+features/all/rt/kernel-stop_machine-partly-revert-stop_machine-Use-r.patch
# DRIVERS SERIAL
features/all/rt/drivers-tty-fix-omap-lock-crap.patch
@@ -445,6 +452,8 @@ features/all/rt/powerpc-ps3-device-init.c-adapt-to-completions-using.patch
features/all/rt/arm-at91-tclib-default-to-tclib-timer-for-rt.patch
features/all/rt/arm-unwind-use_raw_lock.patch
features/all/rt/ARM-enable-irq-in-translation-section-permission-fau.patch
+features/all/rt/genirq-update-irq_set_irqchip_state-documentation.patch
+features/all/rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch
# ARM64
features/all/rt/arm64-xen--Make-XEN-depend-on-non-rt.patch
@@ -506,6 +515,9 @@ features/all/rt/kernel-hotplug-restore-original-cpu-mask-oncpu-down.patch
features/all/rt/cpu_down_move_migrate_enable_back.patch
features/all/rt/hotplug-Use-set_cpus_allowed_ptr-in-sync_unplug_thre.patch
+features/all/rt/rtmutex-push-down-migrate_disable-into-rt_spin_lock.patch
+features/all/rt/rt-locking-Reenable-migration-accross-schedule.patch
+
# SCSCI QLA2xxx
features/all/rt/scsi-qla2xxx-fix-bug-sleeping-function-called-from-invalid-context.patch
--
Alioth's /usr/local/bin/git-commit-notice on /srv/git.debian.org/git/kernel/linux.git
More information about the Kernel-svn-changes
mailing list