[linux] 01/01: [rt] Update to 4.4-rt3
debian-kernel at lists.debian.org
debian-kernel at lists.debian.org
Wed Jan 27 21:25:18 UTC 2016
This is an automated email from the git hooks/post-receive script.
benh pushed a commit to branch master
in repository linux.
commit 546ce382803bcace9e99f36361d5c493791364e6
Author: Ben Hutchings <ben at decadent.org.uk>
Date: Wed Jan 27 19:24:32 2016 +0000
[rt] Update to 4.4-rt3
This includes all the build fixes I made for 4.4-rt1 and -rt2, so drop
my patches.
---
debian/changelog | 1 +
...e-lock-unlock-symetry-versus-pi_lock-and-.patch | 2 +-
...rop-the-concept-of-certain-power-domains-.patch | 178 --------------
...irq-in-translation-section-permission-fau.patch | 2 +-
...CK-printk-drop-the-logbuf_lock-more-often.patch | 2 +-
...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 | 77 ++++++
...t-remove-irq-handler-when-clock-is-unused.patch | 37 ++-
...-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 | 52 +++-
.../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 +-
.../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 | 37 +++
.../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 | 6 +-
.../all/rt/cond-resched-lock-rt-tweak.patch | 2 +-
.../features/all/rt/cond-resched-softirq-rt.patch | 6 +-
...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 | 16 +-
...l-Add-a-UNINTERRUPTIBLE-hrtimer_nanosleep.patch | 14 +-
.../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 | 26 ++
...rivers-media-vsp1_video-fix-compile-error.patch | 33 +++
.../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 | 2 +-
.../all/rt/genirq-disable-irqpoll-on-rt.patch | 2 +-
...ot-invoke-the-affinity-callback-via-a-wor.patch | 16 +-
.../features/all/rt/genirq-force-threading.patch | 2 +-
...-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 | 7 +-
...up-hrtimer-callback-changes-for-preempt-r.patch | 54 +++--
.../all/rt/hrtimers-prepare-full-preemption.patch | 8 +-
...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 | 12 +-
.../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 | 135 +++--------
...-msg-Implement-lockless-pipelined-wakeups.patch | 5 +-
.../all/rt/ipc-sem-rework-semaphore-wakeups.patch | 2 +-
...-softirq-processing-in-irq-thread-context.patch | 2 +-
...irqwork-Move-irq-safe-work-to-irq-context.patch | 2 +-
...qwork-push_most_work_into_softirq_context.patch | 2 +-
debian/patches/features/all/rt/jump-label-rt.patch | 2 +-
.../all/rt/kconfig-disable-a-few-options-rt.patch | 2 +-
.../features/all/rt/kconfig-preempt-rt-full.patch | 2 +-
.../kernel-SRCU-provide-a-static-initializer.patch | 4 +-
...fix-cpu-down-problem-if-kthread-s-cpu-is-.patch | 2 +-
...plug-restore-original-cpu-mask-oncpu-down.patch | 2 +-
.../features/all/rt/kgb-serial-hackaround.patch | 2 +-
debian/patches/features/all/rt/latency-hist.patch | 20 +-
.../latency_hist-update-sched_switch-probe.patch | 30 ---
.../latency_hist-update-sched_wakeup-probe.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 +-
.../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 +-
...ock-check-in-anon_vma_free.patch_vma_free.patch | 53 -----
.../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 | 22 +-
...cpuhotplug-drain-input_pkt_queue-lockless.patch | 2 +-
...otect-users-of-napi_alloc_cache-against-r.patch | 77 ++++++
...-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 | 126 ++++++++++
.../all/rt/net-prevent-abba-deadlock.patch | 2 +-
...-a-way-to-delegate-processing-a-softirq-t.patch | 79 +++++++
...ev_deactivate_many-use-msleep-1-instead-o.patch | 2 +-
.../rt/net-tx-action-avoid-livelock-on-rt.patch | 6 +-
.../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 | 74 ++++++
.../features/all/rt/preempt-lazy-support.patch | 18 +-
.../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 | 35 +++
.../ptrace-fix-ptrace-vs-tasklist_lock-race.patch | 8 +-
.../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 | 2 +-
.../all/rt/rcu-disable-rcu-fast-no-hz-on-rt.patch | 2 +-
.../all/rt/rcu-make-RCU_BOOST-default-on-RT.patch | 16 +-
.../rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch | 2 +-
.../all/rt/rcu-more-swait-conversions.patch | 2 +-
..._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 | 2 +-
.../features/all/rt/rt-introduce-cpu-chill.patch | 4 +-
.../features/all/rt/rt-local-irq-lock.patch | 2 +-
.../features/all/rt/rt-preempt-base-config.patch | 2 +-
.../features/all/rt/rt-serial-warn-fix.patch | 2 +-
...rtmutex--Handle-non-enqueued-waiters-gracefully | 2 +-
.../rt/rtmutex-Use-chainwalking-control-enum.patch | 5 +-
.../rt/rtmutex-add-a-first-shot-of-ww_mutex.patch | 2 +-
.../all/rt/rtmutex-avoid-include-hell.patch | 2 +-
.../features/all/rt/rtmutex-futex-prepare-rt.patch | 2 +-
.../features/all/rt/rtmutex-lock-killable.patch | 2 +-
.../all/rt/rtmutex-trylock-is-okay-on-RT.patch | 2 +-
.../features/all/rt/rtmutex_dont_include_rcu.patch | 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 | 4 +-
.../features/all/rt/sched-mmdrop-delayed.patch | 10 +-
...ched-provide-a-tsk_nr_cpus_allowed-helper.patch | 262 +++++++++++++++++++++
.../features/all/rt/sched-rt-mutex-wakeup.patch | 6 +-
...hed-ttwu-ensure-success-return-is-correct.patch | 4 +-
...sk_cpus_allowed-instead-of-accessing-cpus.patch | 58 +++++
...ueue-Only-wake-up-idle-workers-if-not-blo.patch | 4 +-
.../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 | 4 +-
.../features/all/rt/softirq-preempt-fix-3-re.patch | 2 +-
.../features/all/rt/softirq-split-locks.patch | 12 +-
...irq-split-timer-softirqs-out-of-ksoftirqd.patch | 208 ++++++++++++++++
.../sparc64-use-generic-rwsem-spinlocks-rt.patch | 5 +-
.../all/rt/spinlock-types-separate-raw.patch | 2 +-
...ne-create-lg_global_trylock_relax-primiti.patch | 2 +-
...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 | 8 +-
.../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 | 4 +-
.../rt/timers-prepare-for-full-preemption.patch | 15 +-
...cy-hist-Consider-new-argument-when-probin.patch | 38 +++
...count-for-preempt-off-in-preempt_schedule.patch | 2 +-
...t-remove-preemption-disabling-in-netif_rx.patch | 6 +-
.../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 | 14 +-
.../all/rt/workqueue-prevent-deadlock-stall.patch | 6 +-
.../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 | 15 +-
...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 | 33 ++-
271 files changed, 1690 insertions(+), 759 deletions(-)
diff --git a/debian/changelog b/debian/changelog
index 13c6f8f..5e99078 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -20,6 +20,7 @@ linux (4.4-1~exp2) UNRELEASED; urgency=medium
* linux-image: Remove unnecessary debconf initialisations
* linux-{headers,image}: Remove support for version-specific hooks
* linux-headers: Make postinst script less verbose (see: #734266)
+ * [rt] Update to 4.4-rt3
-- Ian Campbell <ijc at debian.org> Sat, 23 Jan 2016 08:23:05 +0000
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 6a0038e..ab1eedc 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
In exit_pi_state_list() we have the following locking construct:
diff --git a/debian/patches/features/all/rt/0009-ARM-OMAP2-Drop-the-concept-of-certain-power-domains-.patch b/debian/patches/features/all/rt/0009-ARM-OMAP2-Drop-the-concept-of-certain-power-domains-.patch
deleted file mode 100644
index 7ec2cc6..0000000
--- a/debian/patches/features/all/rt/0009-ARM-OMAP2-Drop-the-concept-of-certain-power-domains-.patch
+++ /dev/null
@@ -1,178 +0,0 @@
-From 70f4293bd36740fd730ab25abe39281d1b312365 Mon Sep 17 00:00:00 2001
-From: Russ Dill <Russ.Dill at ti.com>
-Date: Wed, 5 Aug 2015 15:30:44 +0530
-Subject: [PATCH 09/21] ARM: OMAP2: Drop the concept of certain power domains
- not being able to lose context.
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt2.tar.xz
-
-It isn't much of a win, and with hibernation, everything loses context.
-
-Signed-off-by: Russ Dill <Russ.Dill at ti.com>
-[j-keerthy at ti.com] ported to 4.1
-Signed-off-by: Keerthy <j-keerthy at ti.com>
----
- arch/arm/mach-omap2/gpio.c | 1
- arch/arm/mach-omap2/powerdomain.c | 40 --------------------------------
- arch/arm/mach-omap2/powerdomain.h | 1
- drivers/gpio/gpio-omap.c | 36 +++++++++++-----------------
- include/linux/platform_data/gpio-omap.h | 1
- 5 files changed, 14 insertions(+), 65 deletions(-)
-
---- a/arch/arm/mach-omap2/gpio.c
-+++ b/arch/arm/mach-omap2/gpio.c
-@@ -130,7 +130,6 @@ static int __init omap2_gpio_dev_init(st
- }
-
- pwrdm = omap_hwmod_get_pwrdm(oh);
-- pdata->loses_context = pwrdm_can_ever_lose_context(pwrdm);
-
- pdev = omap_device_build(name, id - 1, oh, pdata, sizeof(*pdata));
- kfree(pdata);
---- a/arch/arm/mach-omap2/powerdomain.c
-+++ b/arch/arm/mach-omap2/powerdomain.c
-@@ -1166,43 +1166,3 @@ int pwrdm_get_context_loss_count(struct
- return count;
- }
-
--/**
-- * pwrdm_can_ever_lose_context - can this powerdomain ever lose context?
-- * @pwrdm: struct powerdomain *
-- *
-- * Given a struct powerdomain * @pwrdm, returns 1 if the powerdomain
-- * can lose either memory or logic context or if @pwrdm is invalid, or
-- * returns 0 otherwise. This function is not concerned with how the
-- * powerdomain registers are programmed (i.e., to go off or not); it's
-- * concerned with whether it's ever possible for this powerdomain to
-- * go off while some other part of the chip is active. This function
-- * assumes that every powerdomain can go to either ON or INACTIVE.
-- */
--bool pwrdm_can_ever_lose_context(struct powerdomain *pwrdm)
--{
-- int i;
--
-- if (!pwrdm) {
-- pr_debug("powerdomain: %s: invalid powerdomain pointer\n",
-- __func__);
-- return 1;
-- }
--
-- if (pwrdm->pwrsts & PWRSTS_OFF)
-- return 1;
--
-- if (pwrdm->pwrsts & PWRSTS_RET) {
-- if (pwrdm->pwrsts_logic_ret & PWRSTS_OFF)
-- return 1;
--
-- for (i = 0; i < pwrdm->banks; i++)
-- if (pwrdm->pwrsts_mem_ret[i] & PWRSTS_OFF)
-- return 1;
-- }
--
-- for (i = 0; i < pwrdm->banks; i++)
-- if (pwrdm->pwrsts_mem_on[i] & PWRSTS_OFF)
-- return 1;
--
-- return 0;
--}
---- a/arch/arm/mach-omap2/powerdomain.h
-+++ b/arch/arm/mach-omap2/powerdomain.h
-@@ -244,7 +244,6 @@ int pwrdm_state_switch(struct powerdomai
- int pwrdm_pre_transition(struct powerdomain *pwrdm);
- int pwrdm_post_transition(struct powerdomain *pwrdm);
- int pwrdm_get_context_loss_count(struct powerdomain *pwrdm);
--bool pwrdm_can_ever_lose_context(struct powerdomain *pwrdm);
-
- extern int omap_set_pwrdm_state(struct powerdomain *pwrdm, u8 state);
-
---- a/drivers/gpio/gpio-omap.c
-+++ b/drivers/gpio/gpio-omap.c
-@@ -69,7 +69,7 @@ struct gpio_bank {
- struct device *dev;
- bool is_mpuio;
- bool dbck_flag;
-- bool loses_context;
-+
- bool context_valid;
- int stride;
- u32 width;
-@@ -1208,15 +1208,9 @@ static int omap_gpio_probe(struct platfo
- #ifdef CONFIG_OF_GPIO
- bank->chip.of_node = of_node_get(node);
- #endif
-- if (node) {
-- if (!of_property_read_bool(node, "ti,gpio-always-on"))
-- bank->loses_context = true;
-- } else {
-- bank->loses_context = pdata->loses_context;
--
-- if (bank->loses_context)
-- bank->get_context_loss_count =
-- pdata->get_context_loss_count;
-+ if (!node) {
-+ bank->get_context_loss_count =
-+ pdata->get_context_loss_count;
- }
-
- if (bank->regs->set_dataout && bank->regs->clr_dataout)
-@@ -1373,7 +1367,7 @@ static int omap_gpio_runtime_resume(stru
- * been initialised and so initialise it now. Also initialise
- * the context loss count.
- */
-- if (bank->loses_context && !bank->context_valid) {
-+ if (!bank->context_valid) {
- omap_gpio_init_context(bank);
-
- if (bank->get_context_loss_count)
-@@ -1394,17 +1388,15 @@ static int omap_gpio_runtime_resume(stru
- writel_relaxed(bank->context.risingdetect,
- bank->base + bank->regs->risingdetect);
-
-- if (bank->loses_context) {
-- if (!bank->get_context_loss_count) {
-+ if (!bank->get_context_loss_count) {
-+ omap_gpio_restore_context(bank);
-+ } else {
-+ c = bank->get_context_loss_count(bank->dev);
-+ if (c != bank->context_loss_count) {
- omap_gpio_restore_context(bank);
- } else {
-- c = bank->get_context_loss_count(bank->dev);
-- if (c != bank->context_loss_count) {
-- omap_gpio_restore_context(bank);
-- } else {
-- raw_spin_unlock_irqrestore(&bank->lock, flags);
-- return 0;
-- }
-+ spin_unlock_irqrestore(&bank->lock, flags);
-+ return 0;
- }
- }
-
-@@ -1476,7 +1468,7 @@ void omap2_gpio_prepare_for_idle(int pwr
- struct gpio_bank *bank;
-
- list_for_each_entry(bank, &omap_gpio_list, node) {
-- if (!BANK_USED(bank) || !bank->loses_context)
-+ if (!BANK_USED(bank))
- continue;
-
- bank->power_mode = pwr_mode;
-@@ -1490,7 +1482,7 @@ void omap2_gpio_resume_after_idle(void)
- struct gpio_bank *bank;
-
- list_for_each_entry(bank, &omap_gpio_list, node) {
-- if (!BANK_USED(bank) || !bank->loses_context)
-+ if (!BANK_USED(bank))
- continue;
-
- pm_runtime_get_sync(bank->dev);
---- a/include/linux/platform_data/gpio-omap.h
-+++ b/include/linux/platform_data/gpio-omap.h
-@@ -198,7 +198,6 @@ struct omap_gpio_platform_data {
- int bank_width; /* GPIO bank width */
- int bank_stride; /* Only needed for omap1 MPUIO */
- bool dbck_flag; /* dbck required or not - True for OMAP3&4 */
-- bool loses_context; /* whether the bank would ever lose context */
- bool is_mpuio; /* whether the bank is of type MPUIO */
- u32 non_wakeup_gpios;
-
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 15a2a22..db4aa0e 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 e680b77..60fb83b 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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-lapic-mark-LAPIC-timer-handler-as-irqsafe.patch b/debian/patches/features/all/rt/KVM-lapic-mark-LAPIC-timer-handler-as-irqsafe.patch
index 57c4094..4b42c0d 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 76d4797..de74b70 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 5f2f69d..fe34ea1 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 2280f3f..ff6f0e8 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
new file mode 100644
index 0000000..f7e58b5
--- /dev/null
+++ b/debian/patches/features/all/rt/arm-arm64-lazy-preempt-add-TIF_NEED_RESCHED_LAZY-to-.patch
@@ -0,0 +1,77 @@
+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-rt3.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.
+
+Reported-by: Grygorii Strashko <grygorii.strashko at ti.com>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ arch/arm/include/asm/thread_info.h | 7 ++++---
+ arch/arm/kernel/entry-common.S | 9 +++++++--
+ arch/arm64/include/asm/thread_info.h | 3 ++-
+ 3 files changed, 13 insertions(+), 6 deletions(-)
+
+--- a/arch/arm/include/asm/thread_info.h
++++ b/arch/arm/include/asm/thread_info.h
+@@ -143,8 +143,8 @@ extern int vfp_restore_user_hwstate(stru
+ #define TIF_SYSCALL_TRACE 4 /* syscall trace active */
+ #define TIF_SYSCALL_AUDIT 5 /* syscall auditing active */
+ #define TIF_SYSCALL_TRACEPOINT 6 /* syscall tracepoint instrumentation */
+-#define TIF_SECCOMP 7 /* seccomp syscall filtering active */
+-#define TIF_NEED_RESCHED_LAZY 8
++#define TIF_SECCOMP 8 /* seccomp syscall filtering active */
++#define TIF_NEED_RESCHED_LAZY 7
+
+ #define TIF_NOHZ 12 /* in adaptive nohz mode */
+ #define TIF_USING_IWMMXT 17
+@@ -170,7 +170,8 @@ extern int vfp_restore_user_hwstate(stru
+ * Change these and you break ASM code in entry-common.S
+ */
+ #define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
+- _TIF_NOTIFY_RESUME | _TIF_UPROBE)
++ _TIF_NOTIFY_RESUME | _TIF_UPROBE | \
++ _TIF_NEED_RESCHED_LAZY)
+
+ #endif /* __KERNEL__ */
+ #endif /* __ASM_ARM_THREAD_INFO_H */
+--- a/arch/arm/kernel/entry-common.S
++++ b/arch/arm/kernel/entry-common.S
+@@ -36,7 +36,9 @@
+ UNWIND(.cantunwind )
+ disable_irq_notrace @ disable interrupts
+ ldr r1, [tsk, #TI_FLAGS] @ re-check for syscall tracing
+- tst r1, #_TIF_SYSCALL_WORK | _TIF_WORK_MASK
++ tst r1, #((_TIF_SYSCALL_WORK | _TIF_WORK_MASK) & ~_TIF_SECCOMP)
++ bne fast_work_pending
++ tst r1, #_TIF_SECCOMP
+ bne fast_work_pending
+
+ /* perform architecture specific actions before user return */
+@@ -62,8 +64,11 @@ ENDPROC(ret_fast_syscall)
+ str r0, [sp, #S_R0 + S_OFF]! @ save returned r0
+ disable_irq_notrace @ disable interrupts
+ ldr r1, [tsk, #TI_FLAGS] @ re-check for syscall tracing
+- tst r1, #_TIF_SYSCALL_WORK | _TIF_WORK_MASK
++ tst r1, #((_TIF_SYSCALL_WORK | _TIF_WORK_MASK) & ~_TIF_SECCOMP)
++ bne do_slower_path
++ tst r1, #_TIF_SECCOMP
+ beq no_work_pending
++do_slower_path:
+ UNWIND(.fnend )
+ ENDPROC(ret_fast_syscall)
+
+--- a/arch/arm64/include/asm/thread_info.h
++++ b/arch/arm64/include/asm/thread_info.h
+@@ -129,7 +129,8 @@ static inline struct thread_info *curren
+ #define _TIF_32BIT (1 << TIF_32BIT)
+
+ #define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
+- _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE)
++ _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \
++ _TIF_NEED_RESCHED_LAZY)
+
+ #define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
+ _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \
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 5ed2756..cdb0480 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Setup and remove the interrupt handler in clock event mode selection.
This avoids calling the (shared) interrupt handler when the device is
@@ -14,21 +14,24 @@ commit 8fe82a55 ("ARM: at91: sparse irq support") which is included since v3.6.
Patch based on what Sami Pietikäinen <Sami.Pietikainen at wapice.com> suggested].
Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
---
- drivers/clocksource/timer-atmel-pit.c | 15 ++++++++-------
- drivers/clocksource/timer-atmel-st.c | 28 ++++++++++++++++++++--------
- 2 files changed, 28 insertions(+), 15 deletions(-)
+ drivers/clocksource/timer-atmel-pit.c | 17 +++++++++--------
+ drivers/clocksource/timer-atmel-st.c | 32 ++++++++++++++++++++++----------
+ 2 files changed, 31 insertions(+), 18 deletions(-)
--- a/drivers/clocksource/timer-atmel-pit.c
+++ b/drivers/clocksource/timer-atmel-pit.c
-@@ -96,6 +96,7 @@ static int pit_clkevt_shutdown(struct cl
+@@ -96,15 +96,24 @@ static int pit_clkevt_shutdown(struct cl
/* disable irq, leaving the clocksource active */
pit_write(data->base, AT91_PIT_MR, (data->cycle - 1) | AT91_PIT_PITEN);
-+ free_irq(atmel_pit_irq, data);
++ free_irq(data->irq, data);
return 0;
}
-@@ -105,6 +106,13 @@ static int pit_clkevt_shutdown(struct cl
++static irqreturn_t at91sam926x_pit_interrupt(int irq, void *dev_id);
+ /*
+ * Clockevent device: interrupts every 1/HZ (== pit_cycles * MCK/16)
+ */
static int pit_clkevt_set_periodic(struct clock_event_device *dev)
{
struct pit_data *data = clkevt_to_pit_data(dev);
@@ -42,6 +45,14 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
/* update clocksource counter */
data->cnt += data->cycle * PIT_PICNT(pit_read(data->base, AT91_PIT_PIVR));
+@@ -181,7 +190,6 @@ static void __init at91sam926x_pit_commo
+ {
+ unsigned long pit_rate;
+ unsigned bits;
+- int ret;
+
+ /*
+ * Use our actual MCK to figure out how many MCK/16 ticks per
@@ -206,13 +214,6 @@ static void __init at91sam926x_pit_commo
data->clksrc.flags = CLOCK_SOURCE_IS_CONTINUOUS;
clocksource_register_hz(&data->clksrc, pit_rate);
@@ -92,7 +103,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
static int clkevt32k_set_periodic(struct clock_event_device *dev)
{
-+ int irq;
++ int ret;
+
clkdev32k_disable_and_flush_irq();
@@ -114,8 +125,14 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
regmap_st = syscon_node_to_regmap(node);
if (IS_ERR(regmap_st))
-@@ -214,13 +233,6 @@ static void __init atmel_st_timer_init(s
- if (!irq)
+@@ -210,17 +229,10 @@ static void __init atmel_st_timer_init(s
+ regmap_read(regmap_st, AT91_ST_SR, &val);
+
+ /* Get the interrupts property */
+- irq = irq_of_parse_and_map(node, 0);
+- if (!irq)
++ atmel_st_irq = irq_of_parse_and_map(node, 0);
++ if (!atmel_st_irq)
panic(pr_fmt("Unable to get IRQ from DT\n"));
- /* Make IRQs happen for the system timer */
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 a29415a..424148d 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 000f874..f4fed36 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 ba50628..08e1500 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
@@ -1,16 +1,16 @@
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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
fixup highmem for ARM.
Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
---
- arch/arm/include/asm/switch_to.h | 8 ++++++
- arch/arm/mm/highmem.c | 45 ++++++++++++++++++++++++++++++++++-----
+ arch/arm/include/asm/switch_to.h | 8 +++++
+ arch/arm/mm/highmem.c | 56 +++++++++++++++++++++++++++++++++------
include/linux/highmem.h | 1
- 3 files changed, 49 insertions(+), 5 deletions(-)
+ 3 files changed, 57 insertions(+), 8 deletions(-)
--- a/arch/arm/include/asm/switch_to.h
+++ b/arch/arm/include/asm/switch_to.h
@@ -38,7 +38,19 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/arch/arm/mm/highmem.c
+++ b/arch/arm/mm/highmem.c
-@@ -54,12 +54,13 @@ EXPORT_SYMBOL(kunmap);
+@@ -34,6 +34,11 @@ static inline pte_t get_fixmap_pte(unsig
+ return *ptep;
+ }
+
++static unsigned int fixmap_idx(int type)
++{
++ return FIX_KMAP_BEGIN + type + KM_TYPE_NR * smp_processor_id();
++}
++
+ void *kmap(struct page *page)
+ {
+ might_sleep();
+@@ -54,12 +59,13 @@ EXPORT_SYMBOL(kunmap);
void *kmap_atomic(struct page *page)
{
@@ -53,7 +65,16 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
pagefault_disable();
if (!PageHighMem(page))
return page_address(page);
-@@ -93,7 +94,10 @@ void *kmap_atomic(struct page *page)
+@@ -79,7 +85,7 @@ void *kmap_atomic(struct page *page)
+
+ type = kmap_atomic_idx_push();
+
+- idx = FIX_KMAP_BEGIN + type + KM_TYPE_NR * smp_processor_id();
++ idx = fixmap_idx(type);
+ vaddr = __fix_to_virt(idx);
+ #ifdef CONFIG_DEBUG_HIGHMEM
+ /*
+@@ -93,7 +99,10 @@ void *kmap_atomic(struct page *page)
* in place, so the contained TLB flush ensures the TLB is updated
* with the new mapping.
*/
@@ -65,7 +86,12 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
return (void *)vaddr;
}
-@@ -110,6 +114,9 @@ void __kunmap_atomic(void *kvaddr)
+@@ -106,10 +115,13 @@ void __kunmap_atomic(void *kvaddr)
+
+ if (kvaddr >= (void *)FIXADDR_START) {
+ type = kmap_atomic_idx();
+- idx = FIX_KMAP_BEGIN + type + KM_TYPE_NR * smp_processor_id();
++ idx = fixmap_idx(type);
if (cache_is_vivt())
__cpuc_flush_dcache_area((void *)vaddr, PAGE_SIZE);
@@ -75,7 +101,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
#ifdef CONFIG_DEBUG_HIGHMEM
BUG_ON(vaddr != __fix_to_virt(idx));
#else
-@@ -122,17 +129,18 @@ void __kunmap_atomic(void *kvaddr)
+@@ -122,28 +134,56 @@ void __kunmap_atomic(void *kvaddr)
kunmap_high(pte_page(pkmap_page_table[PKMAP_NR(vaddr)]));
}
pagefault_enable();
@@ -96,7 +122,11 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
pagefault_disable();
if (!PageHighMem(page))
return page_address(page);
-@@ -143,7 +151,34 @@ void *kmap_atomic_pfn(unsigned long pfn)
+
+ type = kmap_atomic_idx_push();
+- idx = FIX_KMAP_BEGIN + type + KM_TYPE_NR * smp_processor_id();
++ idx = fixmap_idx(type);
+ vaddr = __fix_to_virt(idx);
#ifdef CONFIG_DEBUG_HIGHMEM
BUG_ON(!pte_none(get_fixmap_pte(vaddr)));
#endif
@@ -117,7 +147,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+ * Clear @prev's kmap_atomic mappings
+ */
+ for (i = 0; i < prev_p->kmap_idx; i++) {
-+ int idx = i + KM_TYPE_NR * smp_processor_id();
++ int idx = fixmap_idx(i);
+
+ set_fixmap_pte(idx, __pte(0));
+ }
@@ -125,7 +155,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+ * Restore @next_p's kmap_atomic mappings
+ */
+ for (i = 0; i < next_p->kmap_idx; i++) {
-+ int idx = i + KM_TYPE_NR * smp_processor_id();
++ int idx = fixmap_idx(i);
+
+ if (!pte_none(next_p->kmap_pte[i]))
+ set_fixmap_pte(idx, next_p->kmap_pte[i]);
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 bd9382e..ec5e2e6 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 df41da3..58c7e57 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 3d20f77..d1f05b4 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Mostly unwind is done with irqs enabled however SLUB may call it with
irqs disabled while creating a new SLUB cache.
diff --git a/debian/patches/features/all/rt/arm64-xen--Make-XEN-depend-on-non-rt.patch b/debian/patches/features/all/rt/arm64-xen--Make-XEN-depend-on-non-rt.patch
index 572063c..0a38aee 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 05be187..2943c33 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 df87b78..aa125b8 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 2a871b1..21ca4d0 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 a27394c..c425b91 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 229f04d..5d0cbb1 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 50f92fb..6be4d8d 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 5ed3de7..930c9b6 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 2c4deaf..9d90a2e 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 c44b1d8..d91e978 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
new file mode 100644
index 0000000..989b51a
--- /dev/null
+++ b/debian/patches/features/all/rt/btrfs-initialize-the-seq-counter-in-struct-btrfs_dev.patch
@@ -0,0 +1,37 @@
+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-rt3.tar.xz
+
+I managed to trigger this:
+| INFO: trying to register non-static key.
+| the code is fine but needs lockdep annotation.
+| turning off the locking correctness validator.
+| CPU: 1 PID: 781 Comm: systemd-gpt-aut Not tainted 4.4.0-rt2+ #14
+| Hardware name: ARM-Versatile Express
+| [<80307cec>] (dump_stack)
+| [<80070e98>] (__lock_acquire)
+| [<8007184c>] (lock_acquire)
+| [<80287800>] (btrfs_ioctl)
+| [<8012a8d4>] (do_vfs_ioctl)
+| [<8012ac14>] (SyS_ioctl)
+
+so I think that btrfs_device_data_ordered_init() is not invoked behind
+a macro somewhere.
+
+Fixes: 7cc8e58d53cd ("Btrfs: fix unprotected device's variants on 32bits machine")
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ fs/btrfs/volumes.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/fs/btrfs/volumes.c
++++ b/fs/btrfs/volumes.c
+@@ -232,6 +232,7 @@ static struct btrfs_device *__alloc_devi
+ spin_lock_init(&dev->reada_lock);
+ atomic_set(&dev->reada_in_flight, 0);
+ atomic_set(&dev->dev_stats_ccnt, 0);
++ btrfs_device_data_ordered_init(dev);
+ INIT_RADIX_TREE(&dev->reada_zones, GFP_NOFS & ~__GFP_DIRECT_RECLAIM);
+ INIT_RADIX_TREE(&dev->reada_extents, GFP_NOFS & ~__GFP_DIRECT_RECLAIM);
+
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 5652fe9..4dfe326 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 28c3b8f..c5e1439 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 a2b6e0d..7a0508d 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 31708b6..651f5eb 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 94f7f4c..4b29e43 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Completions have no long lasting callbacks and therefor do not need
the complex waitqueue variant. Use simple waitqueues which reduces the
@@ -199,7 +199,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
EXPORT_SYMBOL(completion_done);
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
-@@ -3143,7 +3143,10 @@ void migrate_disable(void)
+@@ -3102,7 +3102,10 @@ void migrate_disable(void)
}
#ifdef CONFIG_SCHED_DEBUG
@@ -211,7 +211,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
#endif
if (p->migrate_disable) {
-@@ -3173,7 +3176,10 @@ void migrate_enable(void)
+@@ -3130,7 +3133,10 @@ void migrate_enable(void)
}
#ifdef CONFIG_SCHED_DEBUG
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 76bf970..768cbea 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 a30f1b6..ea776c8 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
@@ -35,7 +35,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
{
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
-@@ -4832,6 +4832,7 @@ int __cond_resched_lock(spinlock_t *lock
+@@ -4771,6 +4771,7 @@ int __cond_resched_lock(spinlock_t *lock
}
EXPORT_SYMBOL(__cond_resched_lock);
@@ -43,7 +43,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
int __sched __cond_resched_softirq(void)
{
BUG_ON(!in_softirq());
-@@ -4845,6 +4846,7 @@ int __sched __cond_resched_softirq(void)
+@@ -4784,6 +4785,7 @@ int __sched __cond_resched_softirq(void)
return 0;
}
EXPORT_SYMBOL(__cond_resched_softirq);
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 2130d6c..810ef1e 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 47e18b6..697cdf8 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 fdb5ab7..7c03829 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Bringing a CPU down is a pain with the PREEMPT_RT kernel because
tasks can be preempted in many more places than in non-RT. In
@@ -57,7 +57,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
-@@ -2284,6 +2284,10 @@ extern void do_set_cpus_allowed(struct t
+@@ -2287,6 +2287,10 @@ extern void do_set_cpus_allowed(struct t
extern int set_cpus_allowed_ptr(struct task_struct *p,
const struct cpumask *new_mask);
@@ -68,7 +68,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
#else
static inline void do_set_cpus_allowed(struct task_struct *p,
const struct cpumask *new_mask)
-@@ -2296,6 +2300,9 @@ static inline int set_cpus_allowed_ptr(s
+@@ -2299,6 +2303,9 @@ static inline int set_cpus_allowed_ptr(s
return -EINVAL;
return 0;
}
@@ -443,7 +443,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
* interrupt affinities.
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
-@@ -1220,6 +1220,84 @@ void do_set_cpus_allowed(struct task_str
+@@ -1211,6 +1211,84 @@ void do_set_cpus_allowed(struct task_str
enqueue_task(rq, p, ENQUEUE_RESTORE);
}
@@ -528,7 +528,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/*
* Change a given task's CPU affinity. Migrate the thread to a
* proper CPU and schedule it away if the CPU it's executing on
-@@ -3085,7 +3163,7 @@ void migrate_disable(void)
+@@ -3044,7 +3122,7 @@ void migrate_disable(void)
{
struct task_struct *p = current;
@@ -537,9 +537,9 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
#ifdef CONFIG_SCHED_DEBUG
p->migrate_disable_atomic++;
#endif
-@@ -3118,7 +3196,7 @@ void migrate_enable(void)
- unsigned long flags;
- struct rq *rq;
+@@ -3075,7 +3153,7 @@ void migrate_enable(void)
+ {
+ struct task_struct *p = current;
- if (in_atomic() || p->flags & PF_NO_SETAFFINITY) {
+ if (in_atomic()) {
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 de048d9..dd5da94 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
We hit another bug that was caused by switching cpu_chill() from
msleep() to hrtimer_nanosleep().
@@ -34,7 +34,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
-@@ -1657,12 +1657,13 @@ void hrtimer_init_sleeper(struct hrtimer
+@@ -1656,12 +1656,13 @@ void hrtimer_init_sleeper(struct hrtimer
}
EXPORT_SYMBOL_GPL(hrtimer_init_sleeper);
@@ -50,7 +50,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
hrtimer_start_expires(&t->timer, mode);
if (likely(t->task))
-@@ -1704,7 +1705,8 @@ long __sched hrtimer_nanosleep_restart(s
+@@ -1703,7 +1704,8 @@ long __sched hrtimer_nanosleep_restart(s
HRTIMER_MODE_ABS);
hrtimer_set_expires_tv64(&t.timer, restart->nanosleep.expires);
@@ -60,7 +60,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
goto out;
rmtp = restart->nanosleep.rmtp;
-@@ -1721,8 +1723,10 @@ long __sched hrtimer_nanosleep_restart(s
+@@ -1720,8 +1722,10 @@ long __sched hrtimer_nanosleep_restart(s
return ret;
}
@@ -73,7 +73,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
{
struct restart_block *restart;
struct hrtimer_sleeper t;
-@@ -1735,7 +1739,7 @@ long hrtimer_nanosleep(struct timespec *
+@@ -1734,7 +1738,7 @@ long hrtimer_nanosleep(struct timespec *
hrtimer_init_on_stack(&t.timer, clockid, mode);
hrtimer_set_expires_range_ns(&t.timer, timespec_to_ktime(*rqtp), slack);
@@ -82,7 +82,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
goto out;
/* Absolute timers do not update the rmtp value and restart: */
-@@ -1762,6 +1766,12 @@ long hrtimer_nanosleep(struct timespec *
+@@ -1761,6 +1765,12 @@ long hrtimer_nanosleep(struct timespec *
return ret;
}
@@ -95,7 +95,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
SYSCALL_DEFINE2(nanosleep, struct timespec __user *, rqtp,
struct timespec __user *, rmtp)
{
-@@ -1788,7 +1798,8 @@ void cpu_chill(void)
+@@ -1787,7 +1797,8 @@ void cpu_chill(void)
unsigned int freeze_flag = current->flags & PF_NOFREEZE;
current->flags |= PF_NOFREEZE;
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 3ac0941..ac50ed1 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 3080ec7..6c01a71 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 e7e0e40..758f51d 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 7ed97af..36cc0cc 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 c4aebf4..4a2643d 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 fb94382..c1215d5 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
new file mode 100644
index 0000000..797ea6c
--- /dev/null
+++ b/debian/patches/features/all/rt/drivers-cpuidle-coupled-fix-warning-cpuidle_coupled_.patch
@@ -0,0 +1,26 @@
+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-rt3.tar.xz
+
+Used multi_v7_defconfig+PREEMPT_RT_FULL=y and this caused a compilation
+warning without this fix:
+../drivers/cpuidle/coupled.c:122:21: warning: 'cpuidle_coupled_lock'
+defined but not used [-Wunused-variable]
+
+Signed-off-by: Anders Roxell <anders.roxell at linaro.org>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ drivers/cpuidle/coupled.c | 1 -
+ 1 file changed, 1 deletion(-)
+
+--- a/drivers/cpuidle/coupled.c
++++ b/drivers/cpuidle/coupled.c
+@@ -119,7 +119,6 @@ struct cpuidle_coupled {
+
+ #define CPUIDLE_COUPLED_NOT_IDLE (-1)
+
+-static DEFINE_MUTEX(cpuidle_coupled_lock);
+ static DEFINE_PER_CPU(struct call_single_data, cpuidle_coupled_poke_cb);
+
+ /*
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
new file mode 100644
index 0000000..88bce31
--- /dev/null
+++ b/debian/patches/features/all/rt/drivers-media-vsp1_video-fix-compile-error.patch
@@ -0,0 +1,33 @@
+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-rt3.tar.xz
+
+This was found with the -RT patch enabled, but the fix should apply to
+non-RT also.
+
+Compilation error without this fix:
+../drivers/media/platform/vsp1/vsp1_video.c: In function
+'vsp1_pipeline_stopped':
+../drivers/media/platform/vsp1/vsp1_video.c:524:2: error: expected
+expression before 'do'
+ spin_unlock_irqrestore(&pipe->irqlock, flags);
+ ^
+
+Signed-off-by: Anders Roxell <anders.roxell at linaro.org>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ drivers/media/platform/vsp1/vsp1_video.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/media/platform/vsp1/vsp1_video.c
++++ b/drivers/media/platform/vsp1/vsp1_video.c
+@@ -520,7 +520,7 @@ static bool vsp1_pipeline_stopped(struct
+ bool stopped;
+
+ spin_lock_irqsave(&pipe->irqlock, flags);
+- stopped = pipe->state == VSP1_PIPELINE_STOPPED,
++ stopped = pipe->state == VSP1_PIPELINE_STOPPED;
+ spin_unlock_irqrestore(&pipe->irqlock, flags);
+
+ return stopped;
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 505e554..ab4926f 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 edd3be8..1757c69 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 cf13373..166a14e 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 7b48d67..3cfebc6 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 7a5c117..532a853 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 1ee262a..88d6865 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 53b5796..1368947 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 6f48a7d..e2dcc80 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 91a3628..b5a7b58 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 8f9160a..dd1a62c 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 15ca03c..e022a32 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 0b3033e..8e96459 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 16190fe..e81de78 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 2325cc4..8bf136b 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 70dfa57..b05d660 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 b15b50b..580a9cd 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 d274622..1324546 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 1c32971..0286cb6 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 1290b02..b2edb5e 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Requeue with timeout causes a bug with PREEMPT_RT_FULL.
diff --git a/debian/patches/features/all/rt/genirq-disable-irqpoll-on-rt.patch b/debian/patches/features/all/rt/genirq-disable-irqpoll-on-rt.patch
index 99d3b65..66a8731 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 0c497a3..3a500fb 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Joe Korty reported, that __irq_set_affinity_locked() schedules a
workqueue while holding a rawlock which results in a might_sleep()
@@ -11,13 +11,21 @@ wakeup() a process while holding the lock.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
---
- include/linux/interrupt.h | 1
+ include/linux/interrupt.h | 2 +
kernel/irq/manage.c | 79 ++++++++++++++++++++++++++++++++++++++++++++--
- 2 files changed, 77 insertions(+), 3 deletions(-)
+ 2 files changed, 78 insertions(+), 3 deletions(-)
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
-@@ -217,6 +217,7 @@ struct irq_affinity_notify {
+@@ -206,6 +206,7 @@ extern void resume_device_irqs(void);
+ * @irq: Interrupt to which notification applies
+ * @kref: Reference count, for internal use
+ * @work: Work item, for internal use
++ * @list: List item for deferred callbacks
+ * @notify: Function to be called on change. This will be
+ * called in process context.
+ * @release: Function to be called on release. This will be
+@@ -217,6 +218,7 @@ struct irq_affinity_notify {
unsigned int irq;
struct kref kref;
struct work_struct work;
diff --git a/debian/patches/features/all/rt/genirq-force-threading.patch b/debian/patches/features/all/rt/genirq-force-threading.patch
index d9bfb72..59d8e27 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Force threaded_irqs and optimize the code (force_irqthreads) in regard
to this.
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 4fbb5e3..66afb46 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 2c5a7a0..ad4fab8 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 797f5fe..5646296 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 5188b3f..0ca6197 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 62ca4a7..bdc6f66 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 ffc0357..d356ca9 100644
--- a/debian/patches/features/all/rt/hrtimer-enfore-64byte-alignment.patch
+++ b/debian/patches/features/all/rt/hrtimer-enfore-64byte-alignment.patch
@@ -1,8 +1,7 @@
-From e35e67cb032e78055b63eae5a3a370664fabfc01 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Wed, 23 Dec 2015 20:57:41 +0100
-Subject: [PATCH] hrtimer: enfore 64byte alignment
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt2.tar.xz
+Subject: hrtimer: enfore 64byte alignment
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
@@ -15,7 +14,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
-@@ -124,11 +124,7 @@ struct hrtimer_sleeper {
+@@ -125,11 +125,7 @@ struct hrtimer_sleeper {
struct task_struct *task;
};
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 d4e01ee..c63f344 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
In preempt-rt we can not call the callbacks which take sleeping locks
from the timer interrupt context.
@@ -11,19 +11,28 @@ delivery problem for real.
Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
Signed-off-by: Ingo Molnar <mingo at elte.hu>
-[bwh: Adjust context to apply after fixed latency-hist.patch]
+
---
- include/linux/hrtimer.h | 4 +
+ include/linux/hrtimer.h | 7 ++
kernel/sched/core.c | 1
kernel/sched/rt.c | 1
- kernel/time/hrtimer.c | 142 +++++++++++++++++++++++++++++++++++++++++++----
+ kernel/time/hrtimer.c | 137 +++++++++++++++++++++++++++++++++++++++++++----
kernel/time/tick-sched.c | 1
kernel/watchdog.c | 1
- 6 files changed, 139 insertions(+), 11 deletions(-)
+ 6 files changed, 139 insertions(+), 9 deletions(-)
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
-@@ -102,6 +102,8 @@ struct hrtimer {
+@@ -87,6 +87,8 @@ enum hrtimer_restart {
+ * @function: timer expiry callback function
+ * @base: pointer to the timer base (per cpu and per clock)
+ * @state: state information (See bit values above)
++ * @cb_entry: list entry to defer timers from hardirq context
++ * @irqsafe: timer can run in hardirq context
+ * @praecox: timer expiry time if expired at the time of programming
+ * @start_pid: timer statistics field to store the pid of the task which
+ * started the timer
+@@ -103,6 +105,8 @@ struct hrtimer {
enum hrtimer_restart (*function)(struct hrtimer *);
struct hrtimer_clock_base *base;
unsigned long state;
@@ -32,7 +41,15 @@ Signed-off-by: Ingo Molnar <mingo at elte.hu>
#ifdef CONFIG_MISSED_TIMER_OFFSETS_HIST
ktime_t praecox;
#endif
-@@ -141,6 +143,7 @@ struct hrtimer_clock_base {
+@@ -134,6 +138,7 @@ struct hrtimer_sleeper {
+ * timer to a base on another cpu.
+ * @clockid: clock id for per_cpu support
+ * @active: red black tree root node for the active timers
++ * @expired: list head for deferred timers.
+ * @get_time: function to retrieve the current time of the clock
+ * @offset: offset of this clock to the monotonic base
+ */
+@@ -142,6 +147,7 @@ struct hrtimer_clock_base {
int index;
clockid_t clockid;
struct timerqueue_head active;
@@ -40,7 +57,7 @@ Signed-off-by: Ingo Molnar <mingo at elte.hu>
ktime_t (*get_time)(void);
ktime_t offset;
} __attribute__((__aligned__(HRTIMER_CLOCK_BASE_ALIGN)));
-@@ -184,6 +187,7 @@ struct hrtimer_cpu_base {
+@@ -185,6 +191,7 @@ struct hrtimer_cpu_base {
raw_spinlock_t lock;
seqcount_t seq;
struct hrtimer *running;
@@ -121,7 +138,7 @@ Signed-off-by: Ingo Molnar <mingo at elte.hu>
cpu_base->running == timer)
return true;
-@@ -1292,12 +1296,113 @@ static void __run_hrtimer(struct hrtimer
+@@ -1292,12 +1296,112 @@ static void __run_hrtimer(struct hrtimer
cpu_base->running = NULL;
}
@@ -224,7 +241,6 @@ Signed-off-by: Ingo Molnar <mingo at elte.hu>
+
+#endif
+
-+
static enum hrtimer_restart hrtimer_wakeup(struct hrtimer *timer);
static void __hrtimer_run_queues(struct hrtimer_cpu_base *cpu_base, ktime_t now)
@@ -235,15 +251,15 @@ Signed-off-by: Ingo Molnar <mingo at elte.hu>
for (; active; base++, active >>= 1) {
struct timerqueue_node *node;
-@@ -1337,9 +1442,14 @@ static void __hrtimer_run_queues(struct
+@@ -1337,9 +1441,14 @@ static void __hrtimer_run_queues(struct
if (basenow.tv64 < hrtimer_get_softexpires_tv64(timer))
break;
- __run_hrtimer(cpu_base, base, timer, &basenow);
-+ if (!hrtimer_rt_defer(timer))
-+ __run_hrtimer(cpu_base, base, timer, &basenow);
-+ else
-+ raise = 1;
++ if (!hrtimer_rt_defer(timer))
++ __run_hrtimer(cpu_base, base, timer, &basenow);
++ else
++ raise = 1;
}
}
+ if (raise)
@@ -251,7 +267,7 @@ Signed-off-by: Ingo Molnar <mingo at elte.hu>
}
#ifdef CONFIG_HIGH_RES_TIMERS
-@@ -1481,8 +1591,6 @@ void hrtimer_run_queues(void)
+@@ -1481,8 +1590,6 @@ void hrtimer_run_queues(void)
now = hrtimer_update_base(cpu_base);
__hrtimer_run_queues(cpu_base, now);
raw_spin_unlock(&cpu_base->lock);
@@ -260,7 +276,7 @@ Signed-off-by: Ingo Molnar <mingo at elte.hu>
}
/*
-@@ -1504,6 +1612,7 @@ static enum hrtimer_restart hrtimer_wake
+@@ -1504,6 +1611,7 @@ static enum hrtimer_restart hrtimer_wake
void hrtimer_init_sleeper(struct hrtimer_sleeper *sl, struct task_struct *task)
{
sl->timer.function = hrtimer_wakeup;
@@ -268,7 +284,7 @@ Signed-off-by: Ingo Molnar <mingo at elte.hu>
sl->task = task;
}
EXPORT_SYMBOL_GPL(hrtimer_init_sleeper);
-@@ -1638,6 +1747,7 @@ static void init_hrtimers_cpu(int cpu)
+@@ -1638,6 +1746,7 @@ static void init_hrtimers_cpu(int cpu)
for (i = 0; i < HRTIMER_MAX_CLOCK_BASES; i++) {
cpu_base->clock_base[i].cpu_base = cpu_base;
timerqueue_init_head(&cpu_base->clock_base[i].active);
@@ -276,7 +292,7 @@ Signed-off-by: Ingo Molnar <mingo at elte.hu>
}
cpu_base->cpu = cpu;
-@@ -1742,11 +1852,21 @@ static struct notifier_block hrtimers_nb
+@@ -1742,11 +1851,21 @@ static struct notifier_block hrtimers_nb
.notifier_call = hrtimer_cpu_notify,
};
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 9c36163..36dc904 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Make cancellation of a running callback in softirq context safe
against preemption.
@@ -18,7 +18,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
-@@ -204,6 +204,9 @@ struct hrtimer_cpu_base {
+@@ -205,6 +205,9 @@ struct hrtimer_cpu_base {
unsigned int nr_hangs;
unsigned int max_hang_time;
#endif
@@ -28,7 +28,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
struct hrtimer_clock_base clock_base[HRTIMER_MAX_CLOCK_BASES];
} ____cacheline_aligned;
-@@ -392,6 +395,13 @@ static inline void hrtimer_restart(struc
+@@ -393,6 +396,13 @@ static inline void hrtimer_restart(struc
hrtimer_start_expires(timer, HRTIMER_MODE_ABS);
}
@@ -42,7 +42,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/* Query timers: */
extern ktime_t hrtimer_get_remaining(const struct hrtimer *timer);
-@@ -411,7 +421,7 @@ static inline int hrtimer_is_queued(stru
+@@ -412,7 +422,7 @@ static inline int hrtimer_is_queued(stru
* Helper function to check, whether the timer is running the callback
* function
*/
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 1ff69c0..8f53140 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 2be129b..7da25de 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 3913d64..2f3ec57 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 dbda336..5661ff1 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 dc4fec0..43f1c8e 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Jon Masters developed this wonderful SMI detector. For details please
consult Documentation/hwlat_detector.txt. It could be ported to Linux
@@ -725,7 +725,7 @@ Signed-off-by: Carsten Emde <C.Emde at osadl.org>
+
+ buf[sizeof(buf)-1] = '\0'; /* just in case */
+ err = kstrtoul(buf, 10, &val);
-+ if (0 != err)
++ if (err)
+ return -EINVAL;
+
+ if (val) {
@@ -1029,7 +1029,7 @@ Signed-off-by: Carsten Emde <C.Emde at osadl.org>
+
+ buf[U64STR_SIZE-1] = '\0'; /* just in case */
+ err = kstrtoull(buf, 10, &val);
-+ if (0 != err)
++ if (err)
+ return -EINVAL;
+
+ mutex_lock(&data.lock);
@@ -1113,7 +1113,7 @@ Signed-off-by: Carsten Emde <C.Emde at osadl.org>
+
+ buf[U64STR_SIZE-1] = '\0'; /* just in case */
+ err = kstrtoull(buf, 10, &val);
-+ if (0 != err)
++ if (err)
+ return -EINVAL;
+
+ mutex_lock(&data.lock);
@@ -1306,11 +1306,11 @@ Signed-off-by: Carsten Emde <C.Emde at osadl.org>
+ pr_info(BANNER "version %s\n", VERSION);
+
+ ret = init_stats();
-+ if (0 != ret)
++ if (ret)
+ goto out;
+
+ ret = init_debugfs();
-+ if (0 != ret)
++ if (ret)
+ goto err_stats;
+
+ if (enabled)
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 a57322d..dd7847e 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 f1a91fb..e111f77 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 9618f25..a1e2db4 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 bbcc30d..51f7570 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 23fb94d..aa9062b 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 1299bb6..7a8f40c 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 294227d..85157f7 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 b4c5e91..61f6295 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Introduce migrate_disable(). The task can't be pushed to another CPU but can
be preempted.
@@ -31,14 +31,14 @@ invoked again from another caller on the same CPU.
Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
---
- include/linux/cpu.h | 3 +
- include/linux/preempt.h | 9 +++
- include/linux/sched.h | 29 +++++++++-
- include/linux/smp.h | 3 +
- kernel/sched/core.c | 132 +++++++++++++++++++++++++++++++++++++++++++++++-
- kernel/sched/debug.c | 7 ++
- lib/smp_processor_id.c | 5 +
- 7 files changed, 182 insertions(+), 6 deletions(-)
+ include/linux/cpu.h | 3 ++
+ include/linux/preempt.h | 9 ++++++
+ include/linux/sched.h | 39 ++++++++++++++++++++------
+ include/linux/smp.h | 3 ++
+ kernel/sched/core.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++-
+ kernel/sched/debug.c | 7 ++++
+ lib/smp_processor_id.c | 5 ++-
+ 7 files changed, 126 insertions(+), 11 deletions(-)
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -90,17 +90,22 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
int nr_cpus_allowed;
cpumask_t cpus_allowed;
-@@ -1837,9 +1843,6 @@ extern int arch_task_struct_size __read_
+@@ -1837,14 +1843,6 @@ extern int arch_task_struct_size __read_
# define arch_task_struct_size (sizeof(struct task_struct))
#endif
-/* Future-safe accessor for struct task_struct's cpus_allowed. */
-#define tsk_cpus_allowed(tsk) (&(tsk)->cpus_allowed)
-
+-static inline int tsk_nr_cpus_allowed(struct task_struct *p)
+-{
+- return p->nr_cpus_allowed;
+-}
+-
#define TNF_MIGRATED 0x01
#define TNF_NO_GROUP 0x02
#define TNF_SHARED 0x04
-@@ -3116,6 +3119,26 @@ static inline void set_task_cpu(struct t
+@@ -3121,6 +3119,31 @@ static inline void set_task_cpu(struct t
#endif /* CONFIG_SMP */
@@ -116,14 +121,19 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+/* Future-safe accessor for struct task_struct's cpus_allowed. */
+static inline const struct cpumask *tsk_cpus_allowed(struct task_struct *p)
+{
-+#ifdef CONFIG_PREEMPT_RT_FULL
-+ if (p->migrate_disable)
++ if (__migrate_disabled(p))
+ return cpumask_of(task_cpu(p));
-+#endif
+
+ return &p->cpus_allowed;
+}
+
++static inline int tsk_nr_cpus_allowed(struct task_struct *p)
++{
++ if (__migrate_disabled(p))
++ return 1;
++ return p->nr_cpus_allowed;
++}
++
extern long sched_setaffinity(pid_t pid, const struct cpumask *new_mask);
extern long sched_getaffinity(pid_t pid, struct cpumask *mask);
@@ -141,27 +151,11 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
* boot command line:
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
-@@ -1164,6 +1164,15 @@ void set_cpus_allowed_common(struct task
- p->nr_cpus_allowed = cpumask_weight(new_mask);
- }
-
-+#if defined(CONFIG_PREEMPT_RT_FULL) && defined(CONFIG_SMP)
-+#define MIGRATE_DISABLE_SET_AFFIN (1<<30) /* Can't make a negative */
-+#define migrate_disabled_updated(p) ((p)->migrate_disable & MIGRATE_DISABLE_SET_AFFIN)
-+#define migrate_disable_count(p) ((p)->migrate_disable & ~MIGRATE_DISABLE_SET_AFFIN)
-+#else
-+static inline void update_migrate_disable(struct task_struct *p) { }
-+#define migrate_disabled_updated(p) 0
-+#endif
-+
- void do_set_cpus_allowed(struct task_struct *p, const struct cpumask *new_mask)
- {
- struct rq *rq = task_rq(p);
-@@ -1171,6 +1180,11 @@ void do_set_cpus_allowed(struct task_str
+@@ -1171,6 +1171,11 @@ void do_set_cpus_allowed(struct task_str
lockdep_assert_held(&p->pi_lock);
-+ if (migrate_disabled_updated(p)) {
++ if (__migrate_disabled(p)) {
+ cpumask_copy(&p->cpus_allowed, new_mask);
+ return;
+ }
@@ -169,7 +163,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
queued = task_on_rq_queued(p);
running = task_current(rq, p);
-@@ -1232,7 +1246,7 @@ static int __set_cpus_allowed_ptr(struct
+@@ -1232,7 +1237,7 @@ static int __set_cpus_allowed_ptr(struct
do_set_cpus_allowed(p, new_mask);
/* Can the task run on the task's current CPU? If so, we're done */
@@ -178,44 +172,12 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
goto out;
dest_cpu = cpumask_any_and(cpu_active_mask, new_mask);
-@@ -3022,6 +3036,120 @@ static inline void schedule_debug(struct
+@@ -3022,6 +3027,70 @@ static inline void schedule_debug(struct
schedstat_inc(this_rq(), sched_count);
}
+#if defined(CONFIG_PREEMPT_RT_FULL) && defined(CONFIG_SMP)
+
-+static inline void update_migrate_disable(struct task_struct *p)
-+{
-+ const struct cpumask *mask;
-+
-+ if (likely(!p->migrate_disable))
-+ return;
-+
-+ /* Did we already update affinity? */
-+ if (unlikely(migrate_disabled_updated(p)))
-+ return;
-+
-+ /*
-+ * Since this is always current we can get away with only locking
-+ * rq->lock, the ->cpus_allowed value can normally only be changed
-+ * while holding both p->pi_lock and rq->lock, but seeing that this
-+ * is current, we cannot actually be waking up, so all code that
-+ * relies on serialization against p->pi_lock is out of scope.
-+ *
-+ * Having rq->lock serializes us against things like
-+ * set_cpus_allowed_ptr() that can still happen concurrently.
-+ */
-+ mask = tsk_cpus_allowed(p);
-+
-+ if (p->sched_class->set_cpus_allowed)
-+ p->sched_class->set_cpus_allowed(p, mask);
-+ /* mask==cpumask_of(task_cpu(p)) which has a cpumask_weight==1 */
-+ p->nr_cpus_allowed = 1;
-+
-+ /* Let migrate_enable know to fix things back up */
-+ p->migrate_disable |= MIGRATE_DISABLE_SET_AFFIN;
-+}
-+
+void migrate_disable(void)
+{
+ struct task_struct *p = current;
@@ -239,6 +201,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+ preempt_disable();
+ pin_current_cpu();
+ p->migrate_disable = 1;
++ p->nr_cpus_allowed = 1;
+ preempt_enable();
+}
+EXPORT_SYMBOL(migrate_disable);
@@ -246,9 +209,6 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+void migrate_enable(void)
+{
+ struct task_struct *p = current;
-+ const struct cpumask *mask;
-+ unsigned long flags;
-+ struct rq *rq;
+
+ if (in_atomic() || p->flags & PF_NO_SETAFFINITY) {
+#ifdef CONFIG_SCHED_DEBUG
@@ -262,33 +222,17 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+#endif
+ WARN_ON_ONCE(p->migrate_disable <= 0);
+
-+ if (migrate_disable_count(p) > 1) {
++ if (p->migrate_disable > 1) {
+ p->migrate_disable--;
+ return;
+ }
+
+ preempt_disable();
-+ if (unlikely(migrate_disabled_updated(p))) {
-+ /*
-+ * Undo whatever update_migrate_disable() did, also see there
-+ * about locking.
-+ */
-+ rq = this_rq();
-+ raw_spin_lock_irqsave(¤t->pi_lock, flags);
-+ raw_spin_lock(&rq->lock);
-+
-+ /*
-+ * Clearing migrate_disable causes tsk_cpus_allowed to
-+ * show the tasks original cpu affinity.
-+ */
-+ p->migrate_disable = 0;
-+ mask = tsk_cpus_allowed(p);
-+ do_set_cpus_allowed(p, mask);
-+
-+ raw_spin_unlock(&rq->lock);
-+ raw_spin_unlock_irqrestore(¤t->pi_lock, flags);
-+ } else
-+ p->migrate_disable = 0;
++ /*
++ * Clearing migrate_disable causes tsk_cpus_allowed to
++ * show the tasks original cpu affinity.
++ */
++ p->migrate_disable = 0;
+
+ unpin_current_cpu();
+ preempt_enable();
@@ -299,15 +243,6 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/*
* Pick up the highest-prio task:
*/
-@@ -3137,6 +3265,8 @@ static void __sched notrace __schedule(b
- raw_spin_lock_irq(&rq->lock);
- lockdep_pin_lock(&rq->lock);
-
-+ update_migrate_disable(prev);
-+
- rq->clock_skip_update <<= 1; /* promote REQ to ACT */
-
- switch_count = &prev->nivcsw;
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -251,6 +251,9 @@ void print_rt_rq(struct seq_file *m, int
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 5666574..ee98ab9 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
@@ -1,8 +1,7 @@
-From 9a69dce752915917ecfe06a21f9c826c76f6eb07 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Date: Fri, 30 Oct 2015 11:59:07 +0100
-Subject: [PATCH] ipc/msg: Implement lockless pipelined wakeups
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt2.tar.xz
+Subject: ipc/msg: Implement lockless pipelined wakeups
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 dbd5ca7..32a5b87 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 0cde3db..bae5388 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
The processing of softirqs in irq thread context is a performance gain
for the non-rt workloads of a system, but it's counterproductive for
diff --git a/debian/patches/features/all/rt/irqwork-Move-irq-safe-work-to-irq-context.patch b/debian/patches/features/all/rt/irqwork-Move-irq-safe-work-to-irq-context.patch
index 21ff0e6..387cf01 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 eb3bf05..44f11f7 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 221f575..a101042 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 7e4493e..5e3ae17 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 25ce228..274f7c5 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 db71b8f..e78fe94 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: [PATCH] kernel/SRCU: provide a static initializer
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt2.tar.xz
+Subject: kernel/SRCU: provide a static initializer
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 264f60a..41ef702 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 3a9f9d4..e9d2265 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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/kgb-serial-hackaround.patch b/debian/patches/features/all/rt/kgb-serial-hackaround.patch
index 7064c4e..111b050 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 263060f..19b1728 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
This patch provides a recording mechanism to store data of potential
sources of system latencies. The recordings separately determine the
@@ -12,10 +12,10 @@ filesystem. For details please consult Documentation/trace/histograms.txt.
Signed-off-by: Carsten Emde <C.Emde at osadl.org>
Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
-[bwh: Move up prototype of hrtimer_wakeup() so this actually compiles]
+
---
Documentation/trace/histograms.txt | 186 +++++
- include/linux/hrtimer.h | 3
+ include/linux/hrtimer.h | 4
include/linux/sched.h | 6
include/trace/events/hist.h | 72 ++
include/trace/events/latency_hist.h | 29
@@ -24,7 +24,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
kernel/trace/Makefile | 4
kernel/trace/latency_hist.c | 1178 ++++++++++++++++++++++++++++++++++++
kernel/trace/trace_irqsoff.c | 11
- 10 files changed, 1614 insertions(+)
+ 10 files changed, 1615 insertions(+)
--- /dev/null
+++ b/Documentation/trace/histograms.txt
@@ -217,7 +217,15 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+These data are also reset when the wakeup histogram is reset.
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
-@@ -102,6 +102,9 @@ struct hrtimer {
+@@ -87,6 +87,7 @@ enum hrtimer_restart {
+ * @function: timer expiry callback function
+ * @base: pointer to the timer base (per cpu and per clock)
+ * @state: state information (See bit values above)
++ * @praecox: timer expiry time if expired at the time of programming
+ * @start_pid: timer statistics field to store the pid of the task which
+ * started the timer
+ * @start_site: timer statistics field to store the site where the timer
+@@ -102,6 +103,9 @@ struct hrtimer {
enum hrtimer_restart (*function)(struct hrtimer *);
struct hrtimer_clock_base *base;
unsigned long state;
@@ -1784,7 +1792,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
if (!preempt_trace() && irq_trace())
stop_critical_timing(CALLER_ADDR0, caller_addr);
}
-@@ -490,6 +498,7 @@ __visible void trace_hardirqs_off_caller
+@@ -490,6 +498,7 @@ EXPORT_SYMBOL(trace_hardirqs_on_caller);
{
if (!preempt_trace() && irq_trace())
start_critical_timing(CALLER_ADDR0, caller_addr);
diff --git a/debian/patches/features/all/rt/latency_hist-update-sched_switch-probe.patch b/debian/patches/features/all/rt/latency_hist-update-sched_switch-probe.patch
deleted file mode 100644
index e62a21f..0000000
--- a/debian/patches/features/all/rt/latency_hist-update-sched_switch-probe.patch
+++ /dev/null
@@ -1,30 +0,0 @@
-From: Ben Hutchings <ben at decadent.org.uk>
-Date: Mon, 04 Jan 2016 17:19:33 +0000
-Subject: latency_hist: Update sched_switch probe
-
-Commit c73464b1c843 ("sched/core: Fix trace_sched_switch()") adds a
-'bool preempt' parameter to probe functions, so change
-probe_wakeup_latency_hist_stop() accordingly..
-
-Signed-off-by: Ben Hutchings <ben at decadent.org.uk>
----
---- a/kernel/trace/latency_hist.c
-+++ b/kernel/trace/latency_hist.c
-@@ -116,7 +116,7 @@ static char *wakeup_latency_hist_dir = "
- static char *wakeup_latency_hist_dir_sharedprio = "sharedprio";
- static notrace void probe_wakeup_latency_hist_start(void *v,
- struct task_struct *p);
--static notrace void probe_wakeup_latency_hist_stop(void *v,
-+static notrace void probe_wakeup_latency_hist_stop(void *v, bool preempt,
- struct task_struct *prev, struct task_struct *next);
- static notrace void probe_sched_migrate_task(void *,
- struct task_struct *task, int cpu);
-@@ -906,7 +906,7 @@ out:
- raw_spin_unlock_irqrestore(&wakeup_lock, flags);
- }
-
--static notrace void probe_wakeup_latency_hist_stop(void *v,
-+static notrace void probe_wakeup_latency_hist_stop(void *v, bool preempt,
- struct task_struct *prev, struct task_struct *next)
- {
- unsigned long flags;
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 1a8823e..8ce5665 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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/leds-trigger-disable-CPU-trigger-on-RT.patch b/debian/patches/features/all/rt/leds-trigger-disable-CPU-trigger-on-RT.patch
index b8eaba6..0de136c 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 7671234..91044ad 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 1ac9095..cf98e37 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 9e2fd38..cc67faa 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 e2813c2..c40026c 100644
--- a/debian/patches/features/all/rt/localversion.patch
+++ b/debian/patches/features/all/rt/localversion.patch
@@ -1,7 +1,7 @@
-Subject: v4.4-rt2
+Subject: v4.4-rt3
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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 @@
-+-rt2
++-rt3
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 bc95f1c..98548d0 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 da777f1..1892d32 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 134d2a3..d6f3ad7 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 0ff8f53..9bb1292 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 a3a260a..167d252 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 d2b3924..d30efdf 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 e87ebda..f9737b7 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 50de786..4f31729 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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-bounce-local-irq-save-nort.patch b/debian/patches/features/all/rt/mm-bounce-local-irq-save-nort.patch
index a7b22c4..0e27bcc 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 a1e4cb1..71fc5c9 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 c02e71a..ae2d161 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 c1f063e..8568832 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 908b90e..a4a821a 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 a7662c0..544752f 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 848bc85..6d5775b 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 aa1b56b..711c3d1 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 380c888..074c76a 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 e8c1574..02ad583 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 2e74137..60ecaaf 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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-rmap-retry-lock-check-in-anon_vma_free.patch_vma_free.patch b/debian/patches/features/all/rt/mm-rmap-retry-lock-check-in-anon_vma_free.patch_vma_free.patch
deleted file mode 100644
index c8d7b7d..0000000
--- a/debian/patches/features/all/rt/mm-rmap-retry-lock-check-in-anon_vma_free.patch_vma_free.patch
+++ /dev/null
@@ -1,53 +0,0 @@
-From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
-Date: Tue, 1 Dec 2015 17:57:02 +0100
-Subject: mm/rmap: retry lock check in anon_vma_free()
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt2.tar.xz
-
-anon_vma_free() checks if the rwsem is locked and if so performs a
-rw lock + unlock operation. It seems the purpose is to flush the current
-reader out.
-From testing it seems that after the anon_vma_unlock_write() there is
-the rt_mutex's owner field has the waiter bit set. It does seem right to
-leave and kfree() that memory if there is still a waiter on that lock.
-The msleep() is there in case the anon_vma_free() caller has the highest
-priority and the waiter never gets scheduled.
-
-XXX
-
-Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
----
- mm/rmap.c | 12 +++++++++++-
- 1 file changed, 11 insertions(+), 1 deletion(-)
-
---- a/mm/rmap.c
-+++ b/mm/rmap.c
-@@ -89,8 +89,10 @@ static inline struct anon_vma *anon_vma_
- return anon_vma;
- }
-
--static inline void anon_vma_free(struct anon_vma *anon_vma)
-+#include <linux/delay.h>
-+static void anon_vma_free(struct anon_vma *anon_vma)
- {
-+ int cnt = 0;
- VM_BUG_ON(atomic_read(&anon_vma->refcount));
-
- /*
-@@ -111,9 +113,17 @@ static inline void anon_vma_free(struct
- * happen _before_ what follows.
- */
- might_sleep();
-+retry:
- if (rwsem_is_locked(&anon_vma->root->rwsem)) {
- anon_vma_lock_write(anon_vma);
- anon_vma_unlock_write(anon_vma);
-+
-+ if (rwsem_is_locked(&anon_vma->root->rwsem)) {
-+ cnt++;
-+ if (cnt > 3)
-+ msleep(1);
-+ }
-+ goto retry;
- }
-
- kmem_cache_free(anon_vma_cachep, anon_vma);
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 90121b4..25d073d 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 06bd7dd..afacc26 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 766ddfc..52772e6 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 11323ab..86f4b3a 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 43985ec..0bb593d 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 80a3839..4d40d09 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 860c6c8..ae0f6c9 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 dd6ffbb..ebb8daa 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
@@ -1,14 +1,14 @@
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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Replace it by a local lock. Though that's pretty inefficient :(
Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
---
- net/core/skbuff.c | 6 ++++--
- 1 file changed, 4 insertions(+), 2 deletions(-)
+ net/core/skbuff.c | 10 ++++++----
+ 1 file changed, 6 insertions(+), 4 deletions(-)
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -41,3 +41,19 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
return data;
}
+@@ -427,13 +429,13 @@ struct sk_buff *__netdev_alloc_skb(struc
+ if (sk_memalloc_socks())
+ gfp_mask |= __GFP_MEMALLOC;
+
+- local_irq_save(flags);
++ local_lock_irqsave(netdev_alloc_lock, flags);
+
+ nc = this_cpu_ptr(&netdev_alloc_cache);
+ data = __alloc_page_frag(nc, len, gfp_mask);
+ pfmemalloc = nc->pfmemalloc;
+
+- local_irq_restore(flags);
++ local_unlock_irqrestore(netdev_alloc_lock, flags);
+
+ if (unlikely(!data))
+ return NULL;
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 90079f9..5869371 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
new file mode 100644
index 0000000..5f441a9
--- /dev/null
+++ b/debian/patches/features/all/rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch
@@ -0,0 +1,77 @@
+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-rt3.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
+and another task may enter BH accessing the same CPU using the same
+napi_alloc_cache variable.
+This patch ensures that each user of napi_alloc_cache uses a local lock.
+
+Cc: stable-rt at vger.kernel.org
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ net/core/skbuff.c | 18 ++++++++++++++----
+ 1 file changed, 14 insertions(+), 4 deletions(-)
+
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -351,6 +351,7 @@ EXPORT_SYMBOL(build_skb);
+ static DEFINE_PER_CPU(struct page_frag_cache, netdev_alloc_cache);
+ static DEFINE_PER_CPU(struct page_frag_cache, napi_alloc_cache);
+ static DEFINE_LOCAL_IRQ_LOCK(netdev_alloc_lock);
++static DEFINE_LOCAL_IRQ_LOCK(napi_alloc_cache_lock);
+
+ static void *__netdev_alloc_frag(unsigned int fragsz, gfp_t gfp_mask)
+ {
+@@ -380,9 +381,13 @@ EXPORT_SYMBOL(netdev_alloc_frag);
+
+ static void *__napi_alloc_frag(unsigned int fragsz, gfp_t gfp_mask)
+ {
+- struct page_frag_cache *nc = this_cpu_ptr(&napi_alloc_cache);
++ struct page_frag_cache *nc;
++ void *data;
+
+- return __alloc_page_frag(nc, fragsz, gfp_mask);
++ nc = &get_locked_var(napi_alloc_cache_lock, napi_alloc_cache);
++ data = __alloc_page_frag(nc, fragsz, gfp_mask);
++ put_locked_var(napi_alloc_cache_lock, napi_alloc_cache);
++ return data;
+ }
+
+ void *napi_alloc_frag(unsigned int fragsz)
+@@ -476,9 +481,10 @@ EXPORT_SYMBOL(__netdev_alloc_skb);
+ struct sk_buff *__napi_alloc_skb(struct napi_struct *napi, unsigned int len,
+ gfp_t gfp_mask)
+ {
+- struct page_frag_cache *nc = this_cpu_ptr(&napi_alloc_cache);
++ struct page_frag_cache *nc;
+ struct sk_buff *skb;
+ void *data;
++ bool pfmemalloc;
+
+ len += NET_SKB_PAD + NET_IP_ALIGN;
+
+@@ -496,7 +502,11 @@ struct sk_buff *__napi_alloc_skb(struct
+ if (sk_memalloc_socks())
+ gfp_mask |= __GFP_MEMALLOC;
+
++ nc = &get_locked_var(napi_alloc_cache_lock, napi_alloc_cache);
+ data = __alloc_page_frag(nc, len, gfp_mask);
++ pfmemalloc = nc->pfmemalloc;
++ put_locked_var(napi_alloc_cache_lock, napi_alloc_cache);
++
+ if (unlikely(!data))
+ return NULL;
+
+@@ -507,7 +517,7 @@ struct sk_buff *__napi_alloc_skb(struct
+ }
+
+ /* use OR instead of assignment to avoid clearing of bits in mask */
+- if (nc->pfmemalloc)
++ if (pfmemalloc)
+ skb->pfmemalloc = 1;
+ skb->head_frag = 1;
+
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 dc11ad4..3364d70 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 e818f4e..45cc93f 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
new file mode 100644
index 0000000..ef6db0c
--- /dev/null
+++ b/debian/patches/features/all/rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch
@@ -0,0 +1,126 @@
+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-rt3.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
+__dev_queue_xmit() aw well. netperf together with a bridge device
+will then trigger the `recursion alert` because each task increments
+the xmit_recursion variable which is per-CPU.
+A virtual device like br0 is required to trigger this warning.
+
+This patch moves the counter to per task instead per-CPU so it counts
+the recursion properly on -RT.
+
+Cc: stable-rt at vger.kernel.org
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ include/linux/netdevice.h | 9 +++++++++
+ include/linux/sched.h | 3 +++
+ net/core/dev.c | 41 ++++++++++++++++++++++++++++++++++++++---
+ 3 files changed, 50 insertions(+), 3 deletions(-)
+
+--- a/include/linux/netdevice.h
++++ b/include/linux/netdevice.h
+@@ -2249,11 +2249,20 @@ void netdev_freemem(struct net_device *d
+ void synchronize_net(void);
+ int init_dummy_netdev(struct net_device *dev);
+
++#ifdef CONFIG_PREEMPT_RT_FULL
++static inline int dev_recursion_level(void)
++{
++ return current->xmit_recursion;
++}
++
++#else
++
+ DECLARE_PER_CPU(int, xmit_recursion);
+ static inline int dev_recursion_level(void)
+ {
+ return this_cpu_read(xmit_recursion);
+ }
++#endif
+
+ struct net_device *dev_get_by_index(struct net *net, int ifindex);
+ struct net_device *__dev_get_by_index(struct net *net, int ifindex);
+--- a/include/linux/sched.h
++++ b/include/linux/sched.h
+@@ -1851,6 +1851,9 @@ struct task_struct {
+ #ifdef CONFIG_DEBUG_ATOMIC_SLEEP
+ unsigned long task_state_change;
+ #endif
++#ifdef CONFIG_PREEMPT_RT_FULL
++ int xmit_recursion;
++#endif
+ int pagefault_disabled;
+ /* CPU-specific state of this task */
+ struct thread_struct thread;
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -2940,9 +2940,44 @@ static void skb_update_prio(struct sk_bu
+ #define skb_update_prio(skb)
+ #endif
+
++#ifdef CONFIG_PREEMPT_RT_FULL
++
++static inline int xmit_rec_read(void)
++{
++ return current->xmit_recursion;
++}
++
++static inline void xmit_rec_inc(void)
++{
++ current->xmit_recursion++;
++}
++
++static inline void xmit_rec_dec(void)
++{
++ current->xmit_recursion--;
++}
++
++#else
++
+ DEFINE_PER_CPU(int, xmit_recursion);
+ EXPORT_SYMBOL(xmit_recursion);
+
++static inline int xmit_rec_read(void)
++{
++ return __this_cpu_read(xmit_recursion);
++}
++
++static inline void xmit_rec_inc(void)
++{
++ __this_cpu_inc(xmit_recursion);
++}
++
++static inline int xmit_rec_dec(void)
++{
++ __this_cpu_dec(xmit_recursion);
++}
++#endif
++
+ #define RECURSION_LIMIT 10
+
+ /**
+@@ -3135,7 +3170,7 @@ static int __dev_queue_xmit(struct sk_bu
+
+ if (txq->xmit_lock_owner != cpu) {
+
+- if (__this_cpu_read(xmit_recursion) > RECURSION_LIMIT)
++ if (xmit_rec_read() > RECURSION_LIMIT)
+ goto recursion_alert;
+
+ skb = validate_xmit_skb(skb, dev);
+@@ -3145,9 +3180,9 @@ static int __dev_queue_xmit(struct sk_bu
+ HARD_TX_LOCK(dev, txq, cpu);
+
+ if (!netif_xmit_stopped(txq)) {
+- __this_cpu_inc(xmit_recursion);
++ xmit_rec_inc();
+ skb = dev_hard_start_xmit(skb, dev, txq, &rc);
+- __this_cpu_dec(xmit_recursion);
++ xmit_rec_dec();
+ if (dev_xmit_complete(rc)) {
+ HARD_TX_UNLOCK(dev, txq);
+ goto out;
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 8d0731c..e4f5ead 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
new file mode 100644
index 0000000..133e906
--- /dev/null
+++ b/debian/patches/features/all/rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch
@@ -0,0 +1,79 @@
+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-rt3.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
+rises the NET_RX softirq in its current context again.
+
+In order to get closer to mainline's behaviour this patch provides
+__raise_softirq_irqoff_ksoft() which raises the softirq in the ksoftird.
+
+Cc: stable-rt at vger.kernel.org
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ include/linux/interrupt.h | 8 ++++++++
+ kernel/softirq.c | 21 +++++++++++++++++++++
+ net/core/dev.c | 2 +-
+ 3 files changed, 30 insertions(+), 1 deletion(-)
+
+--- a/include/linux/interrupt.h
++++ b/include/linux/interrupt.h
+@@ -465,6 +465,14 @@ extern void thread_do_softirq(void);
+ extern void open_softirq(int nr, void (*action)(struct softirq_action *));
+ extern void softirq_init(void);
+ extern void __raise_softirq_irqoff(unsigned int nr);
++#ifdef CONFIG_PREEMPT_RT_FULL
++extern void __raise_softirq_irqoff_ksoft(unsigned int nr);
++#else
++static inline void __raise_softirq_irqoff_ksoft(unsigned int nr)
++{
++ __raise_softirq_irqoff(nr);
++}
++#endif
+
+ extern void raise_softirq_irqoff(unsigned int nr);
+ 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
+ }
+
+ /*
++ * Same as __raise_softirq_irqoff() but will process them in ksoftirqd
++ */
++void __raise_softirq_irqoff_ksoft(unsigned int nr)
++{
++ unsigned int mask;
++
++ if (WARN_ON_ONCE(!__this_cpu_read(ksoftirqd) ||
++ !__this_cpu_read(ktimer_softirqd)))
++ return;
++ mask = 1UL << nr;
++
++ trace_softirq_raise(nr);
++ or_softirq_pending(mask);
++ if (mask & TIMER_SOFTIRQS)
++ __this_cpu_read(ktimer_softirqd)->softirqs_raised |= mask;
++ else
++ __this_cpu_read(ksoftirqd)->softirqs_raised |= mask;
++ wakeup_proper_softirq(nr);
++}
++
++/*
+ * This function must run with irqs disabled!
+ */
+ void raise_softirq_irqoff(unsigned int nr)
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -4919,7 +4919,7 @@ static void net_rx_action(struct softirq
+ list_splice_tail(&repoll, &list);
+ list_splice(&list, &sd->poll_list);
+ if (!list_empty(&sd->poll_list))
+- __raise_softirq_irqoff(NET_RX_SOFTIRQ);
++ __raise_softirq_irqoff_ksoft(NET_RX_SOFTIRQ);
+
+ net_rps_action_and_irq_enable(sd);
+ }
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 32964f7..61f3805 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 5736e1d..e29cc42 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
@@ -45,7 +45,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/net/core/dev.c
+++ b/net/core/dev.c
-@@ -3598,6 +3598,36 @@ int netif_rx_ni(struct sk_buff *skb)
+@@ -3633,6 +3633,36 @@ int netif_rx_ni(struct sk_buff *skb)
}
EXPORT_SYMBOL(netif_rx_ni);
@@ -82,7 +82,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
static void net_tx_action(struct softirq_action *h)
{
struct softnet_data *sd = this_cpu_ptr(&softnet_data);
-@@ -3639,7 +3669,7 @@ static void net_tx_action(struct softirq
+@@ -3674,7 +3704,7 @@ static void net_tx_action(struct softirq
head = head->next_sched;
root_lock = qdisc_lock(q);
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 e726a0e..f3770c1 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 a6ec0de..cdaea8d 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 37ccb09..fb8f6c1 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 5d7001b..8a27d7b 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 c153092..3f6a76a 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 4afb153..d92eb2a 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 d79ec94..3978eff 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 666e88f..6dbe4ef 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 1e2c2a5..e28e728 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 af0d1f9..0be0efc 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 6b58e8e..786a580 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 f725136..682fc03 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 23b7afa..e9fd94e 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 6b2b955..b939cf2 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 13c12b4..fe304f2 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 21e7e63..b0580e6 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 9add8f4..32222d8 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 46fc578..4edd4d0 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 2f7c1ba..ecedd7a 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 317b7e0..4b4aedc 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
new file mode 100644
index 0000000..5339456
--- /dev/null
+++ b/debian/patches/features/all/rt/preempt-lazy-check-preempt_schedule.patch
@@ -0,0 +1,74 @@
+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-rt3.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.
+
+Reported-by: Mike Galbraith <umgwanakikbuti at gmail.com>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ kernel/sched/core.c | 36 ++++++++++++++++++++++++++++--------
+ 1 file changed, 28 insertions(+), 8 deletions(-)
+
+--- a/kernel/sched/core.c
++++ b/kernel/sched/core.c
+@@ -3461,6 +3461,30 @@ static void __sched notrace preempt_sche
+ } while (need_resched());
+ }
+
++#ifdef CONFIG_PREEMPT_LAZY
++/*
++ * If TIF_NEED_RESCHED is then we allow to be scheduled away since this is
++ * set by a RT task. Oterwise we try to avoid beeing scheduled out as long as
++ * preempt_lazy_count counter >0.
++ */
++static int preemptible_lazy(void)
++{
++ if (test_thread_flag(TIF_NEED_RESCHED))
++ return 1;
++ if (current_thread_info()->preempt_lazy_count)
++ return 0;
++ return 1;
++}
++
++#else
++
++static int preemptible_lazy(void)
++{
++ return 1;
++}
++
++#endif
++
+ #ifdef CONFIG_PREEMPT
+ /*
+ * this is the entry point to schedule() from in-kernel preemption
+@@ -3475,6 +3499,8 @@ asmlinkage __visible void __sched notrac
+ */
+ if (likely(!preemptible()))
+ return;
++ if (!preemptible_lazy())
++ return;
+
+ preempt_schedule_common();
+ }
+@@ -3501,15 +3527,9 @@ asmlinkage __visible void __sched notrac
+
+ if (likely(!preemptible()))
+ return;
+-
+-#ifdef CONFIG_PREEMPT_LAZY
+- /*
+- * Check for lazy preemption
+- */
+- if (current_thread_info()->preempt_lazy_count &&
+- !test_thread_flag(TIF_NEED_RESCHED))
++ if (!preemptible_lazy())
+ return;
+-#endif
++
+ do {
+ preempt_disable_notrace();
+ /*
diff --git a/debian/patches/features/all/rt/preempt-lazy-support.patch b/debian/patches/features/all/rt/preempt-lazy-support.patch
index 5d469c6..a8ef97e 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
It has become an obsession to mitigate the determinism vs. throughput
loss of RT. Looking at the mainline semantics of preemption points
@@ -166,7 +166,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
-@@ -2963,6 +2963,43 @@ static inline int test_tsk_need_resched(
+@@ -2966,6 +2966,43 @@ static inline int test_tsk_need_resched(
return unlikely(test_tsk_thread_flag(tsk,TIF_NEED_RESCHED));
}
@@ -297,7 +297,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
void resched_cpu(int cpu)
{
struct rq *rq = cpu_rq(cpu);
-@@ -2353,6 +2385,9 @@ int sched_fork(unsigned long clone_flags
+@@ -2344,6 +2376,9 @@ int sched_fork(unsigned long clone_flags
p->on_cpu = 0;
#endif
init_task_preempt_count(p);
@@ -307,15 +307,15 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
#ifdef CONFIG_SMP
plist_node_init(&p->pushable_tasks, MAX_PRIO);
RB_CLEAR_NODE(&p->pushable_dl_tasks);
-@@ -3183,6 +3218,7 @@ void migrate_disable(void)
+@@ -3142,6 +3177,7 @@ void migrate_disable(void)
}
preempt_disable();
+ preempt_lazy_disable();
pin_current_cpu();
p->migrate_disable = 1;
- preempt_enable();
-@@ -3241,6 +3277,7 @@ void migrate_enable(void)
+ p->nr_cpus_allowed = 1;
+@@ -3182,6 +3218,7 @@ void migrate_enable(void)
unpin_current_cpu();
preempt_enable();
@@ -323,7 +323,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
EXPORT_SYMBOL(migrate_enable);
#endif
-@@ -3380,6 +3417,7 @@ static void __sched notrace __schedule(b
+@@ -3319,6 +3356,7 @@ static void __sched notrace __schedule(b
next = pick_next_task(rq, prev);
clear_tsk_need_resched(prev);
@@ -331,7 +331,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
clear_preempt_need_resched();
rq->clock_skip_update = 0;
-@@ -3525,6 +3563,14 @@ asmlinkage __visible void __sched notrac
+@@ -3464,6 +3502,14 @@ asmlinkage __visible void __sched notrac
if (likely(!preemptible()))
return;
@@ -346,7 +346,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
do {
preempt_disable_notrace();
/*
-@@ -5265,7 +5311,9 @@ void init_idle(struct task_struct *idle,
+@@ -5204,7 +5250,9 @@ void init_idle(struct task_struct *idle,
/* Set the preempt count _outside_ the spinlocks! */
init_idle_preempt_count(idle, cpu);
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 e236c99..73d61d1 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 f4ff354..d8c1de2 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 a146684..659eb63 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 2ea3862..2aa515e 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
new file mode 100644
index 0000000..7820a32
--- /dev/null
+++ b/debian/patches/features/all/rt/ptrace-don-t-open-IRQs-in-ptrace_freeze_traced-too-e.patch
@@ -0,0 +1,35 @@
+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-rt3.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
+too early.
+
+Reported-by: kernel test robot <ying.huang at linux.intel.com>
+Cc: stable-rt at vger.kernel.org
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ kernel/ptrace.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+--- a/kernel/ptrace.c
++++ b/kernel/ptrace.c
+@@ -129,12 +129,14 @@ static bool ptrace_freeze_traced(struct
+
+ spin_lock_irq(&task->sighand->siglock);
+ if (task_is_traced(task) && !__fatal_signal_pending(task)) {
+- raw_spin_lock_irq(&task->pi_lock);
++ unsigned long flags;
++
++ raw_spin_lock_irqsave(&task->pi_lock, flags);
+ if (task->state & __TASK_TRACED)
+ task->state = __TASK_TRACED;
+ else
+ task->saved_state = __TASK_TRACED;
+- raw_spin_unlock_irq(&task->pi_lock);
++ raw_spin_unlock_irqrestore(&task->pi_lock, flags);
+ ret = true;
+ }
+ spin_unlock_irq(&task->sighand->siglock);
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 b3cbba8..ed5a7cb 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
As explained by Alexander Fyodorov <halcy at yandex.ru>:
@@ -112,7 +112,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
spin_unlock_irq(&task->sighand->siglock);
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
-@@ -1435,6 +1435,18 @@ int migrate_swap(struct task_struct *cur
+@@ -1426,6 +1426,18 @@ int migrate_swap(struct task_struct *cur
return ret;
}
@@ -131,7 +131,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
/*
* wait_task_inactive - wait for a thread to unschedule.
*
-@@ -1479,7 +1491,7 @@ unsigned long wait_task_inactive(struct
+@@ -1470,7 +1482,7 @@ unsigned long wait_task_inactive(struct
* is actually now running somewhere else!
*/
while (task_running(rq, p)) {
@@ -140,7 +140,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
return 0;
cpu_relax();
}
-@@ -1494,7 +1506,8 @@ unsigned long wait_task_inactive(struct
+@@ -1485,7 +1497,8 @@ unsigned long wait_task_inactive(struct
running = task_running(rq, p);
queued = task_on_rq_queued(p);
ncsw = 0;
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 1542e32..97b1cea 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 b4860c0..895b2be 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 e8abd02..0996339 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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,
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 27359fe..70f6dbd 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 b5edca7..ba7cb58 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
@@ -1,21 +1,29 @@
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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
default on RT should help in those case and it can be switched off if
someone knows better.
-
Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
---
- init/Kconfig | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
+ init/Kconfig | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/init/Kconfig
+++ b/init/Kconfig
+@@ -498,7 +498,7 @@ config TINY_RCU
+
+ config RCU_EXPERT
+ bool "Make expert-level adjustments to RCU configuration"
+- default n
++ default y if PREEMPT_RT_FULL
+ help
+ This option needs to be enabled if you wish to make
+ expert-level adjustments to RCU configuration. By default,
@@ -641,7 +641,7 @@ config TREE_RCU_TRACE
config RCU_BOOST
bool "Enable RCU priority 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 905495b..3ad308d 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 85adf0f..7c4a0fc 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Convert RCU's wait-queues into simple waitqueues.
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 91e05b7..f1cfc26 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 b313038..d12c408 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 830db4d..eebf0da 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 e741f64..6b25709 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 98f946b..44ef89a 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 b4dfad1..4dcb09a 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Map spinlocks, rwlocks, rw_semaphores and semaphores to the rt_mutex
based locking functions for preempt-rt.
diff --git a/debian/patches/features/all/rt/rt-introduce-cpu-chill.patch b/debian/patches/features/all/rt/rt-introduce-cpu-chill.patch
index ff98cad..ef52f61 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Retry loops on RT might loop forever when the modifying side was
preempted. Add cpu_chill() to replace cpu_relax(). cpu_chill()
@@ -101,7 +101,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
#endif /* defined(_LINUX_DELAY_H) */
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
-@@ -1776,6 +1776,25 @@ SYSCALL_DEFINE2(nanosleep, struct timesp
+@@ -1775,6 +1775,25 @@ SYSCALL_DEFINE2(nanosleep, struct timesp
return hrtimer_nanosleep(&tu, rmtp, HRTIMER_MODE_REL, CLOCK_MONOTONIC);
}
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 ca27478..5271d10 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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-preempt-base-config.patch b/debian/patches/features/all/rt/rt-preempt-base-config.patch
index 8f8a9d4..9cbdba6 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 4ffae10..13d0d68 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 6926b68..9bf5bcf 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Yimin debugged that in case of a PI wakeup in progress when
rt_mutex_start_proxy_lock() calls task_blocks_on_rt_mutex() the latter
diff --git a/debian/patches/features/all/rt/rtmutex-Use-chainwalking-control-enum.patch b/debian/patches/features/all/rt/rtmutex-Use-chainwalking-control-enum.patch
index 06a14a5..770da26 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
@@ -1,8 +1,7 @@
-From 13f032043086194982ac91c68124adae545f5627 Mon Sep 17 00:00:00 2001
From: "bmouring at ni.com" <bmouring at ni.com>
Date: Tue, 15 Dec 2015 17:07:30 -0600
-Subject: [PATCH] rtmutex: Use chainwalking control enum
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt2.tar.xz
+Subject: rtmutex: Use chainwalking control enum
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
In 8930ed80 (rtmutex: Cleanup deadlock detector debug logic),
chainwalking control enums were introduced to limit the deadlock
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 d47c90e..de6c9de 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
lockdep says:
| --------------------------------------------------------------------------
diff --git a/debian/patches/features/all/rt/rtmutex-avoid-include-hell.patch b/debian/patches/features/all/rt/rtmutex-avoid-include-hell.patch
index 5398230..cf236bb 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 9364219..81a2042 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
RT opens a few new interesting race conditions in the rtmutex/futex
combo due to futex hash bucket lock being a 'sleeping' spinlock and
diff --git a/debian/patches/features/all/rt/rtmutex-lock-killable.patch b/debian/patches/features/all/rt/rtmutex-lock-killable.patch
index 5873a66..d79380b 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Add "killable" type to rtmutex. We need this since rtmutex are used as
"normal" mutexes which do use this type.
diff --git a/debian/patches/features/all/rt/rtmutex-trylock-is-okay-on-RT.patch b/debian/patches/features/all/rt/rtmutex-trylock-is-okay-on-RT.patch
index b36988a..c2f53cf 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
non-RT kernel could deadlock on rt_mutex_trylock() in softirq context. On
-RT we don't run softirqs in IRQ context but in thread context so it is
diff --git a/debian/patches/features/all/rt/rtmutex_dont_include_rcu.patch b/debian/patches/features/all/rt/rtmutex_dont_include_rcu.patch
index d99099d..bcdf84d 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 985570c..68fbaae 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 2e7b024..f8fb008 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 3bd2e45..a6802be 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 c7df850..88bf221 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 7cb92c0..e11a561 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 cc55e81..da9cacd 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 b1cd8f2..c676055 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
RT changes the rcu_preempt_depth semantics, so we cannot check for it
in might_sleep().
@@ -37,7 +37,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/* Internal to kernel */
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
-@@ -7729,7 +7729,7 @@ void __init sched_init(void)
+@@ -7668,7 +7668,7 @@ void __init sched_init(void)
#ifdef CONFIG_DEBUG_ATOMIC_SLEEP
static inline int preempt_count_equals(int preempt_offset)
{
diff --git a/debian/patches/features/all/rt/sched-mmdrop-delayed.patch b/debian/patches/features/all/rt/sched-mmdrop-delayed.patch
index 909d328..a34fa38 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Takes sleeping locks and calls into the memory allocator, so nothing
we want to do in task switch and oder atomic contexts.
@@ -85,7 +85,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
*/
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
-@@ -2602,8 +2602,12 @@ static struct rq *finish_task_switch(str
+@@ -2593,8 +2593,12 @@ static struct rq *finish_task_switch(str
finish_arch_post_lock_switch();
fire_sched_in_preempt_notifiers(current);
@@ -99,7 +99,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
if (unlikely(prev_state == TASK_DEAD)) {
if (prev->sched_class->task_dead)
prev->sched_class->task_dead(prev);
-@@ -5317,6 +5321,8 @@ void sched_setnuma(struct task_struct *p
+@@ -5256,6 +5260,8 @@ void sched_setnuma(struct task_struct *p
#endif /* CONFIG_NUMA_BALANCING */
#ifdef CONFIG_HOTPLUG_CPU
@@ -108,7 +108,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/*
* Ensures that the idle task is using init_mm right before its cpu goes
* offline.
-@@ -5331,7 +5337,11 @@ void idle_task_exit(void)
+@@ -5270,7 +5276,11 @@ void idle_task_exit(void)
switch_mm(mm, &init_mm, current);
finish_arch_post_lock_switch();
}
@@ -121,7 +121,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
}
/*
-@@ -5703,6 +5713,10 @@ migration_call(struct notifier_block *nf
+@@ -5642,6 +5652,10 @@ migration_call(struct notifier_block *nf
case CPU_DEAD:
calc_load_migrate(rq);
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
new file mode 100644
index 0000000..6aa7051
--- /dev/null
+++ b/debian/patches/features/all/rt/sched-provide-a-tsk_nr_cpus_allowed-helper.patch
@@ -0,0 +1,262 @@
+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-rt3.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.
+
+Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ include/linux/sched.h | 5 +++++
+ kernel/sched/core.c | 2 +-
+ kernel/sched/deadline.c | 28 ++++++++++++++--------------
+ kernel/sched/rt.c | 24 ++++++++++++------------
+ 4 files changed, 32 insertions(+), 27 deletions(-)
+
+--- a/include/linux/sched.h
++++ b/include/linux/sched.h
+@@ -1832,6 +1832,11 @@ extern int arch_task_struct_size __read_
+ /* Future-safe accessor for struct task_struct's cpus_allowed. */
+ #define tsk_cpus_allowed(tsk) (&(tsk)->cpus_allowed)
+
++static inline int tsk_nr_cpus_allowed(struct task_struct *p)
++{
++ return p->nr_cpus_allowed;
++}
++
+ #define TNF_MIGRATED 0x01
+ #define TNF_NO_GROUP 0x02
+ #define TNF_SHARED 0x04
+--- a/kernel/sched/core.c
++++ b/kernel/sched/core.c
+@@ -1624,7 +1624,7 @@ int select_task_rq(struct task_struct *p
+ {
+ lockdep_assert_held(&p->pi_lock);
+
+- if (p->nr_cpus_allowed > 1)
++ if (tsk_nr_cpus_allowed(p) > 1)
+ cpu = p->sched_class->select_task_rq(p, cpu, sd_flags, wake_flags);
+
+ /*
+--- a/kernel/sched/deadline.c
++++ b/kernel/sched/deadline.c
+@@ -134,7 +134,7 @@ static void inc_dl_migration(struct sche
+ {
+ struct task_struct *p = dl_task_of(dl_se);
+
+- if (p->nr_cpus_allowed > 1)
++ if (tsk_nr_cpus_allowed(p) > 1)
+ dl_rq->dl_nr_migratory++;
+
+ update_dl_migration(dl_rq);
+@@ -144,7 +144,7 @@ static void dec_dl_migration(struct sche
+ {
+ struct task_struct *p = dl_task_of(dl_se);
+
+- if (p->nr_cpus_allowed > 1)
++ if (tsk_nr_cpus_allowed(p) > 1)
+ dl_rq->dl_nr_migratory--;
+
+ update_dl_migration(dl_rq);
+@@ -989,7 +989,7 @@ static void enqueue_task_dl(struct rq *r
+
+ enqueue_dl_entity(&p->dl, pi_se, flags);
+
+- if (!task_current(rq, p) && p->nr_cpus_allowed > 1)
++ if (!task_current(rq, p) && tsk_nr_cpus_allowed(p) > 1)
+ enqueue_pushable_dl_task(rq, p);
+ }
+
+@@ -1067,9 +1067,9 @@ select_task_rq_dl(struct task_struct *p,
+ * try to make it stay here, it might be important.
+ */
+ if (unlikely(dl_task(curr)) &&
+- (curr->nr_cpus_allowed < 2 ||
++ (tsk_nr_cpus_allowed(curr) < 2 ||
+ !dl_entity_preempt(&p->dl, &curr->dl)) &&
+- (p->nr_cpus_allowed > 1)) {
++ (tsk_nr_cpus_allowed(p) > 1)) {
+ int target = find_later_rq(p);
+
+ if (target != -1 &&
+@@ -1090,7 +1090,7 @@ static void check_preempt_equal_dl(struc
+ * Current can't be migrated, useless to reschedule,
+ * let's hope p can move out.
+ */
+- if (rq->curr->nr_cpus_allowed == 1 ||
++ if (tsk_nr_cpus_allowed(rq->curr) == 1 ||
+ cpudl_find(&rq->rd->cpudl, rq->curr, NULL) == -1)
+ return;
+
+@@ -1098,7 +1098,7 @@ static void check_preempt_equal_dl(struc
+ * p is migratable, so let's not schedule it and
+ * see if it is pushed or pulled somewhere else.
+ */
+- if (p->nr_cpus_allowed != 1 &&
++ if (tsk_nr_cpus_allowed(p) != 1 &&
+ cpudl_find(&rq->rd->cpudl, p, NULL) != -1)
+ return;
+
+@@ -1212,7 +1212,7 @@ static void put_prev_task_dl(struct rq *
+ {
+ update_curr_dl(rq);
+
+- if (on_dl_rq(&p->dl) && p->nr_cpus_allowed > 1)
++ if (on_dl_rq(&p->dl) && tsk_nr_cpus_allowed(p) > 1)
+ enqueue_pushable_dl_task(rq, p);
+ }
+
+@@ -1335,7 +1335,7 @@ static int find_later_rq(struct task_str
+ if (unlikely(!later_mask))
+ return -1;
+
+- if (task->nr_cpus_allowed == 1)
++ if (tsk_nr_cpus_allowed(task) == 1)
+ return -1;
+
+ /*
+@@ -1480,7 +1480,7 @@ static struct task_struct *pick_next_pus
+
+ BUG_ON(rq->cpu != task_cpu(p));
+ BUG_ON(task_current(rq, p));
+- BUG_ON(p->nr_cpus_allowed <= 1);
++ BUG_ON(tsk_nr_cpus_allowed(p) <= 1);
+
+ BUG_ON(!task_on_rq_queued(p));
+ BUG_ON(!dl_task(p));
+@@ -1519,7 +1519,7 @@ static int push_dl_task(struct rq *rq)
+ */
+ if (dl_task(rq->curr) &&
+ dl_time_before(next_task->dl.deadline, rq->curr->dl.deadline) &&
+- rq->curr->nr_cpus_allowed > 1) {
++ tsk_nr_cpus_allowed(rq->curr) > 1) {
+ resched_curr(rq);
+ return 0;
+ }
+@@ -1666,9 +1666,9 @@ static void task_woken_dl(struct rq *rq,
+ {
+ if (!task_running(rq, p) &&
+ !test_tsk_need_resched(rq->curr) &&
+- p->nr_cpus_allowed > 1 &&
++ tsk_nr_cpus_allowed(p) > 1 &&
+ dl_task(rq->curr) &&
+- (rq->curr->nr_cpus_allowed < 2 ||
++ (tsk_nr_cpus_allowed(rq->curr) < 2 ||
+ !dl_entity_preempt(&p->dl, &rq->curr->dl))) {
+ push_dl_tasks(rq);
+ }
+@@ -1769,7 +1769,7 @@ static void switched_to_dl(struct rq *rq
+ {
+ if (task_on_rq_queued(p) && rq->curr != p) {
+ #ifdef CONFIG_SMP
+- if (p->nr_cpus_allowed > 1 && rq->dl.overloaded)
++ if (tsk_nr_cpus_allowed(p) > 1 && rq->dl.overloaded)
+ queue_push_tasks(rq);
+ #else
+ if (dl_task(rq->curr))
+--- a/kernel/sched/rt.c
++++ b/kernel/sched/rt.c
+@@ -326,7 +326,7 @@ static void inc_rt_migration(struct sche
+ rt_rq = &rq_of_rt_rq(rt_rq)->rt;
+
+ rt_rq->rt_nr_total++;
+- if (p->nr_cpus_allowed > 1)
++ if (tsk_nr_cpus_allowed(p) > 1)
+ rt_rq->rt_nr_migratory++;
+
+ update_rt_migration(rt_rq);
+@@ -343,7 +343,7 @@ static void dec_rt_migration(struct sche
+ rt_rq = &rq_of_rt_rq(rt_rq)->rt;
+
+ rt_rq->rt_nr_total--;
+- if (p->nr_cpus_allowed > 1)
++ if (tsk_nr_cpus_allowed(p) > 1)
+ rt_rq->rt_nr_migratory--;
+
+ update_rt_migration(rt_rq);
+@@ -1262,7 +1262,7 @@ enqueue_task_rt(struct rq *rq, struct ta
+
+ enqueue_rt_entity(rt_se, flags & ENQUEUE_HEAD);
+
+- if (!task_current(rq, p) && p->nr_cpus_allowed > 1)
++ if (!task_current(rq, p) && tsk_nr_cpus_allowed(p) > 1)
+ enqueue_pushable_task(rq, p);
+ }
+
+@@ -1351,7 +1351,7 @@ select_task_rq_rt(struct task_struct *p,
+ * will have to sort it out.
+ */
+ if (curr && unlikely(rt_task(curr)) &&
+- (curr->nr_cpus_allowed < 2 ||
++ (tsk_nr_cpus_allowed(curr) < 2 ||
+ curr->prio <= p->prio)) {
+ int target = find_lowest_rq(p);
+
+@@ -1375,7 +1375,7 @@ static void check_preempt_equal_prio(str
+ * Current can't be migrated, useless to reschedule,
+ * let's hope p can move out.
+ */
+- if (rq->curr->nr_cpus_allowed == 1 ||
++ if (tsk_nr_cpus_allowed(rq->curr) == 1 ||
+ !cpupri_find(&rq->rd->cpupri, rq->curr, NULL))
+ return;
+
+@@ -1383,7 +1383,7 @@ static void check_preempt_equal_prio(str
+ * p is migratable, so let's not schedule it and
+ * see if it is pushed or pulled somewhere else.
+ */
+- if (p->nr_cpus_allowed != 1
++ if (tsk_nr_cpus_allowed(p) != 1
+ && cpupri_find(&rq->rd->cpupri, p, NULL))
+ return;
+
+@@ -1517,7 +1517,7 @@ static void put_prev_task_rt(struct rq *
+ * The previous task needs to be made eligible for pushing
+ * if it is still active
+ */
+- if (on_rt_rq(&p->rt) && p->nr_cpus_allowed > 1)
++ if (on_rt_rq(&p->rt) && tsk_nr_cpus_allowed(p) > 1)
+ enqueue_pushable_task(rq, p);
+ }
+
+@@ -1567,7 +1567,7 @@ static int find_lowest_rq(struct task_st
+ if (unlikely(!lowest_mask))
+ return -1;
+
+- if (task->nr_cpus_allowed == 1)
++ if (tsk_nr_cpus_allowed(task) == 1)
+ return -1; /* No other targets possible */
+
+ if (!cpupri_find(&task_rq(task)->rd->cpupri, task, lowest_mask))
+@@ -1699,7 +1699,7 @@ static struct task_struct *pick_next_pus
+
+ BUG_ON(rq->cpu != task_cpu(p));
+ BUG_ON(task_current(rq, p));
+- BUG_ON(p->nr_cpus_allowed <= 1);
++ BUG_ON(tsk_nr_cpus_allowed(p) <= 1);
+
+ BUG_ON(!task_on_rq_queued(p));
+ BUG_ON(!rt_task(p));
+@@ -2059,9 +2059,9 @@ static void task_woken_rt(struct rq *rq,
+ {
+ if (!task_running(rq, p) &&
+ !test_tsk_need_resched(rq->curr) &&
+- p->nr_cpus_allowed > 1 &&
++ tsk_nr_cpus_allowed(p) > 1 &&
+ (dl_task(rq->curr) || rt_task(rq->curr)) &&
+- (rq->curr->nr_cpus_allowed < 2 ||
++ (tsk_nr_cpus_allowed(rq->curr) < 2 ||
+ rq->curr->prio <= p->prio))
+ push_rt_tasks(rq);
+ }
+@@ -2134,7 +2134,7 @@ static void switched_to_rt(struct rq *rq
+ */
+ if (task_on_rq_queued(p) && rq->curr != p) {
+ #ifdef CONFIG_SMP
+- if (p->nr_cpus_allowed > 1 && rq->rt.overloaded)
++ if (tsk_nr_cpus_allowed(p) > 1 && rq->rt.overloaded)
+ queue_push_tasks(rq);
+ #else
+ if (p->prio < rq->curr->prio)
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 0589269..e2a2e80 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
@@ -36,7 +36,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
extern void kick_process(struct task_struct *tsk);
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
-@@ -1958,8 +1958,25 @@ try_to_wake_up(struct task_struct *p, un
+@@ -1949,8 +1949,25 @@ try_to_wake_up(struct task_struct *p, un
*/
smp_mb__before_spinlock();
raw_spin_lock_irqsave(&p->pi_lock, flags);
@@ -63,7 +63,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
trace_sched_waking(p);
-@@ -2092,6 +2109,18 @@ int wake_up_process(struct task_struct *
+@@ -2083,6 +2100,18 @@ int wake_up_process(struct task_struct *
}
EXPORT_SYMBOL(wake_up_process);
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 ddec337..3e5cff8 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
@@ -21,7 +21,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
-@@ -1965,8 +1965,10 @@ try_to_wake_up(struct task_struct *p, un
+@@ -1956,8 +1956,10 @@ try_to_wake_up(struct task_struct *p, un
* if the wakeup condition is true.
*/
if (!(wake_flags & WF_LOCK_SLEEPER)) {
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
new file mode 100644
index 0000000..70e03fc
--- /dev/null
+++ b/debian/patches/features/all/rt/sched-use-tsk_cpus_allowed-instead-of-accessing-cpus.patch
@@ -0,0 +1,58 @@
+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-rt3.tar.xz
+
+Use the future-safe accessor for struct task_struct's.
+
+Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ kernel/sched/cpudeadline.c | 4 ++--
+ kernel/sched/cpupri.c | 4 ++--
+ kernel/sched/deadline.c | 2 +-
+ 3 files changed, 5 insertions(+), 5 deletions(-)
+
+--- a/kernel/sched/cpudeadline.c
++++ b/kernel/sched/cpudeadline.c
+@@ -103,10 +103,10 @@ int cpudl_find(struct cpudl *cp, struct
+ const struct sched_dl_entity *dl_se = &p->dl;
+
+ if (later_mask &&
+- cpumask_and(later_mask, cp->free_cpus, &p->cpus_allowed)) {
++ cpumask_and(later_mask, cp->free_cpus, tsk_cpus_allowed(p))) {
+ best_cpu = cpumask_any(later_mask);
+ goto out;
+- } else if (cpumask_test_cpu(cpudl_maximum(cp), &p->cpus_allowed) &&
++ } else if (cpumask_test_cpu(cpudl_maximum(cp), tsk_cpus_allowed(p)) &&
+ dl_time_before(dl_se->deadline, cp->elements[0].dl)) {
+ best_cpu = cpudl_maximum(cp);
+ if (later_mask)
+--- a/kernel/sched/cpupri.c
++++ b/kernel/sched/cpupri.c
+@@ -103,11 +103,11 @@ int cpupri_find(struct cpupri *cp, struc
+ if (skip)
+ continue;
+
+- if (cpumask_any_and(&p->cpus_allowed, vec->mask) >= nr_cpu_ids)
++ if (cpumask_any_and(tsk_cpus_allowed(p), vec->mask) >= nr_cpu_ids)
+ continue;
+
+ if (lowest_mask) {
+- cpumask_and(lowest_mask, &p->cpus_allowed, vec->mask);
++ cpumask_and(lowest_mask, tsk_cpus_allowed(p), vec->mask);
+
+ /*
+ * We have to ensure that we have at least one bit
+--- a/kernel/sched/deadline.c
++++ b/kernel/sched/deadline.c
+@@ -1441,7 +1441,7 @@ static struct rq *find_lock_later_rq(str
+ if (double_lock_balance(rq, later_rq)) {
+ if (unlikely(task_rq(task) != rq ||
+ !cpumask_test_cpu(later_rq->cpu,
+- &task->cpus_allowed) ||
++ tsk_cpus_allowed(task)) ||
+ task_running(rq, task) ||
+ !task_on_rq_queued(task))) {
+ double_unlock_balance(rq, later_rq);
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 b38f81d..3c472e8 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
@@ -24,7 +24,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
-@@ -3326,8 +3326,10 @@ static void __sched notrace __schedule(b
+@@ -3265,8 +3265,10 @@ static void __sched notrace __schedule(b
* If a worker went to sleep, notify and ask workqueue
* whether it wants to wake up a task to maintain
* concurrency.
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 870be57..f58fe27 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 8aa2fdc..b71a5be 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 f4adbd1..6b696ed 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 24e1ef5..e4c6548 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 96dd34e..80cea00 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 8f4132f..5a5b1a9 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 5981139..d82bf1f 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 c7c1bf6..36a7015 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 8d1c0a3..968ad91 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 2de192b..80047cf 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 7104d32..696d8c8 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Disable extra stacks for softirqs. We want to preempt softirqs and
having them on special IRQ-stack does not make this easier.
@@ -146,7 +146,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
{
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
-@@ -446,7 +446,7 @@ struct softirq_action
+@@ -447,7 +447,7 @@ struct softirq_action
asmlinkage void do_softirq(void);
asmlinkage void __do_softirq(void);
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 5e4f011..6aa4931 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 3a5b180..d994b31 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
@@ -86,7 +86,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
#endif /* _LINUX_BH_H */
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
-@@ -443,10 +443,11 @@ struct softirq_action
+@@ -444,10 +444,11 @@ struct softirq_action
void (*action)(struct softirq_action *);
};
@@ -100,7 +100,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
void do_softirq_own_stack(void);
#else
static inline void do_softirq_own_stack(void)
-@@ -454,6 +455,9 @@ static inline void do_softirq_own_stack(
+@@ -455,6 +456,9 @@ static inline void do_softirq_own_stack(
__do_softirq();
}
#endif
@@ -110,7 +110,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
extern void open_softirq(int nr, void (*action)(struct softirq_action *));
extern void softirq_init(void);
-@@ -461,6 +465,7 @@ extern void __raise_softirq_irqoff(unsig
+@@ -462,6 +466,7 @@ extern void __raise_softirq_irqoff(unsig
extern void raise_softirq_irqoff(unsigned int nr);
extern void raise_softirq(unsigned int nr);
@@ -118,7 +118,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
DECLARE_PER_CPU(struct task_struct *, ksoftirqd);
-@@ -618,6 +623,12 @@ void tasklet_hrtimer_cancel(struct taskl
+@@ -619,6 +624,12 @@ void tasklet_hrtimer_cancel(struct taskl
tasklet_kill(&ttimer->tasklet);
}
@@ -576,8 +576,8 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+
+ do_current_softirqs();
+ current->softirq_nestcnt--;
-+ rcu_note_context_switch();
+ local_irq_enable();
++ cond_resched_rcu_qs();
+}
+
+/*
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
new file mode 100644
index 0000000..a42c7ac
--- /dev/null
+++ b/debian/patches/features/all/rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch
@@ -0,0 +1,208 @@
+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-rt3.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
+risen from the normal SCHED_OTHER so the timer wakeup does not happen
+too late.
+With enough networking load it is possible that the system never goes
+idle and schedules ksoftirqd and everything else with a higher priority.
+One of the tasks left behind is one of RCU's threads and so we see stalls
+and eventually run out of memory.
+This patch moves the TIMER and HRTIMER softirqs out of the `ksoftirqd`
+thread into its own `ktimersoftd`. The former can now run SCHED_OTHER
+(same as mainline) and the latter at SCHED_FIFO due to the wakeups.
+
+From networking point of view: The NAPI callback runs after the network
+interrupt thread completes. If its run time takes too long the NAPI code
+itself schedules the `ksoftirqd`. Here in the thread it can run at
+SCHED_OTHER priority and it won't defer RCU anymore.
+
+Cc: stable-rt at vger.kernel.org
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ kernel/softirq.c | 85 +++++++++++++++++++++++++++++++++++++++++++++++--------
+ 1 file changed, 74 insertions(+), 11 deletions(-)
+
+--- a/kernel/softirq.c
++++ b/kernel/softirq.c
+@@ -58,6 +58,10 @@ EXPORT_SYMBOL(irq_stat);
+ static struct softirq_action softirq_vec[NR_SOFTIRQS] __cacheline_aligned_in_smp;
+
+ DEFINE_PER_CPU(struct task_struct *, ksoftirqd);
++#ifdef CONFIG_PREEMPT_RT_FULL
++#define TIMER_SOFTIRQS ((1 << TIMER_SOFTIRQ) | (1 << HRTIMER_SOFTIRQ))
++DEFINE_PER_CPU(struct task_struct *, ktimer_softirqd);
++#endif
+
+ const char * const softirq_to_name[NR_SOFTIRQS] = {
+ "HI", "TIMER", "NET_TX", "NET_RX", "BLOCK", "BLOCK_IOPOLL",
+@@ -171,6 +175,17 @@ static void wakeup_softirqd(void)
+ wake_up_process(tsk);
+ }
+
++#ifdef CONFIG_PREEMPT_RT_FULL
++static void wakeup_timer_softirqd(void)
++{
++ /* Interrupts are disabled: no need to stop preemption */
++ struct task_struct *tsk = __this_cpu_read(ktimer_softirqd);
++
++ if (tsk && tsk->state != TASK_RUNNING)
++ wake_up_process(tsk);
++}
++#endif
++
+ static void handle_softirq(unsigned int vec_nr)
+ {
+ struct softirq_action *h = softirq_vec + vec_nr;
+@@ -473,7 +488,6 @@ void __raise_softirq_irqoff(unsigned int
+ static inline void local_bh_disable_nort(void) { local_bh_disable(); }
+ static inline void _local_bh_enable_nort(void) { _local_bh_enable(); }
+ static void ksoftirqd_set_sched_params(unsigned int cpu) { }
+-static void ksoftirqd_clr_sched_params(unsigned int cpu, bool online) { }
+
+ #else /* !PREEMPT_RT_FULL */
+
+@@ -618,8 +632,12 @@ void thread_do_softirq(void)
+
+ static void do_raise_softirq_irqoff(unsigned int nr)
+ {
++ unsigned int mask;
++
++ mask = 1UL << nr;
++
+ trace_softirq_raise(nr);
+- or_softirq_pending(1UL << nr);
++ or_softirq_pending(mask);
+
+ /*
+ * If we are not in a hard interrupt and inside a bh disabled
+@@ -628,16 +646,30 @@ static void do_raise_softirq_irqoff(unsi
+ * delegate it to ksoftirqd.
+ */
+ if (!in_irq() && current->softirq_nestcnt)
+- current->softirqs_raised |= (1U << nr);
+- else if (__this_cpu_read(ksoftirqd))
+- __this_cpu_read(ksoftirqd)->softirqs_raised |= (1U << nr);
++ current->softirqs_raised |= mask;
++ else if (!__this_cpu_read(ksoftirqd) || !__this_cpu_read(ktimer_softirqd))
++ return;
++
++ if (mask & TIMER_SOFTIRQS)
++ __this_cpu_read(ktimer_softirqd)->softirqs_raised |= mask;
++ else
++ __this_cpu_read(ksoftirqd)->softirqs_raised |= mask;
++}
++
++static void wakeup_proper_softirq(unsigned int nr)
++{
++ if ((1UL << nr) & TIMER_SOFTIRQS)
++ wakeup_timer_softirqd();
++ else
++ wakeup_softirqd();
+ }
+
++
+ void __raise_softirq_irqoff(unsigned int nr)
+ {
+ do_raise_softirq_irqoff(nr);
+ if (!in_irq() && !current->softirq_nestcnt)
+- wakeup_softirqd();
++ wakeup_proper_softirq(nr);
+ }
+
+ /*
+@@ -663,7 +695,7 @@ void raise_softirq_irqoff(unsigned int n
+ * raise a WARN() if the condition is met.
+ */
+ if (!current->softirq_nestcnt)
+- wakeup_softirqd();
++ wakeup_proper_softirq(nr);
+ }
+
+ static inline int ksoftirqd_softirq_pending(void)
+@@ -676,22 +708,37 @@ static inline void _local_bh_enable_nort
+
+ static inline void ksoftirqd_set_sched_params(unsigned int cpu)
+ {
++ /* Take over all but timer pending softirqs when starting */
++ local_irq_disable();
++ current->softirqs_raised = local_softirq_pending() & ~TIMER_SOFTIRQS;
++ local_irq_enable();
++}
++
++static inline void ktimer_softirqd_set_sched_params(unsigned int cpu)
++{
+ struct sched_param param = { .sched_priority = 1 };
+
+ sched_setscheduler(current, SCHED_FIFO, ¶m);
+- /* Take over all pending softirqs when starting */
++
++ /* Take over timer pending softirqs when starting */
+ local_irq_disable();
+- current->softirqs_raised = local_softirq_pending();
++ current->softirqs_raised = local_softirq_pending() & TIMER_SOFTIRQS;
+ local_irq_enable();
+ }
+
+-static inline void ksoftirqd_clr_sched_params(unsigned int cpu, bool online)
++static inline void ktimer_softirqd_clr_sched_params(unsigned int cpu,
++ bool online)
+ {
+ struct sched_param param = { .sched_priority = 0 };
+
+ sched_setscheduler(current, SCHED_NORMAL, ¶m);
+ }
+
++static int ktimer_softirqd_should_run(unsigned int cpu)
++{
++ return current->softirqs_raised;
++}
++
+ #endif /* PREEMPT_RT_FULL */
+ /*
+ * Enter an interrupt context.
+@@ -741,6 +788,9 @@ static inline void invoke_softirq(void)
+ if (__this_cpu_read(ksoftirqd) &&
+ __this_cpu_read(ksoftirqd)->softirqs_raised)
+ wakeup_softirqd();
++ if (__this_cpu_read(ktimer_softirqd) &&
++ __this_cpu_read(ktimer_softirqd)->softirqs_raised)
++ wakeup_timer_softirqd();
+ local_irq_restore(flags);
+ #endif
+ }
+@@ -1173,17 +1223,30 @@ static struct notifier_block cpu_nfb = {
+ static struct smp_hotplug_thread softirq_threads = {
+ .store = &ksoftirqd,
+ .setup = ksoftirqd_set_sched_params,
+- .cleanup = ksoftirqd_clr_sched_params,
+ .thread_should_run = ksoftirqd_should_run,
+ .thread_fn = run_ksoftirqd,
+ .thread_comm = "ksoftirqd/%u",
+ };
+
++#ifdef CONFIG_PREEMPT_RT_FULL
++static struct smp_hotplug_thread softirq_timer_threads = {
++ .store = &ktimer_softirqd,
++ .setup = ktimer_softirqd_set_sched_params,
++ .cleanup = ktimer_softirqd_clr_sched_params,
++ .thread_should_run = ktimer_softirqd_should_run,
++ .thread_fn = run_ksoftirqd,
++ .thread_comm = "ktimersoftd/%u",
++};
++#endif
++
+ static __init int spawn_ksoftirqd(void)
+ {
+ register_cpu_notifier(&cpu_nfb);
+
+ BUG_ON(smpboot_register_percpu_thread(&softirq_threads));
++#ifdef CONFIG_PREEMPT_RT_FULL
++ BUG_ON(smpboot_register_percpu_thread(&softirq_timer_threads));
++#endif
+
+ return 0;
+ }
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 1f21064..a7f0658 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
@@ -1,8 +1,7 @@
-From d6a6675d436897cd1b09e299436df3499abd753e Mon Sep 17 00:00:00 2001
From: Allen Pais <allen.pais at oracle.com>
Date: Fri, 13 Dec 2013 09:44:41 +0530
-Subject: [PATCH 1/3] sparc64: use generic rwsem spinlocks rt
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt2.tar.xz
+Subject: sparc64: use generic rwsem spinlocks rt
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 de4ffa9..e4fb488 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 f20c395..6e801c1 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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.
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 16010e2..0ec0deb 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 6b38939..cfb3fcd 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 90ca811..39e4b6a 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 8e4ce77..b31c63c 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 502aaab..ee4977c 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 4f08225..0a843f4 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 498224e..0cfc746 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
When CONFIG_PREEMPT_RT_FULL is enabled, tasklets run as threads,
and spinlocks turn are mutexes. But this can cause issues with
@@ -44,7 +44,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
-@@ -482,8 +482,9 @@ static inline struct task_struct *this_c
+@@ -483,8 +483,9 @@ static inline struct task_struct *this_c
to be executed on some cpu at least once after this.
* If the tasklet is already scheduled, but its execution is still not
started, it will be executed only once.
@@ -56,7 +56,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
* Tasklet is strictly serialized wrt itself, but not
wrt another tasklets. If client needs some intertask synchronization,
he makes it with spinlocks.
-@@ -508,27 +509,36 @@ struct tasklet_struct name = { NULL, 0,
+@@ -509,27 +510,36 @@ struct tasklet_struct name = { NULL, 0,
enum
{
TASKLET_STATE_SCHED, /* Tasklet is scheduled for execution */
@@ -99,7 +99,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
#define tasklet_unlock_wait(t) do { } while (0)
#define tasklet_unlock(t) do { } while (0)
#endif
-@@ -577,12 +587,7 @@ static inline void tasklet_disable(struc
+@@ -578,12 +588,7 @@ static inline void tasklet_disable(struc
smp_mb();
}
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 dbeaaf5..65ebe8a 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 b295b82..4f06fee 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 f05e39f..eaad2a4 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 3ee5bee..948c765 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 51d9179..4a4b6f4 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 784a949..d55f97d 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 4902ada..3a473c8 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
@@ -30,7 +30,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
+ * the base lock to check when the next timer is pending and so
+ * we assume the next jiffy.
+ */
-+ return basej;
++ return basem + TICK_NSEC;
+#endif
spin_lock(&base->lock);
if (base->active_timers) {
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 bb41c11..23cbe7a 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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
@@ -13,8 +13,8 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
---
include/linux/timer.h | 2 +-
kernel/sched/core.c | 9 +++++++--
- kernel/time/timer.c | 39 +++++++++++++++++++++++++++++++++++++--
- 3 files changed, 45 insertions(+), 5 deletions(-)
+ kernel/time/timer.c | 41 ++++++++++++++++++++++++++++++++++++++---
+ 3 files changed, 46 insertions(+), 6 deletions(-)
--- a/include/linux/timer.h
+++ b/include/linux/timer.h
@@ -101,6 +101,15 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
/**
* del_timer - deactive a timer.
* @timer: the timer to be deactivated
+@@ -1063,7 +1093,7 @@ int try_to_del_timer_sync(struct timer_l
+ }
+ EXPORT_SYMBOL(try_to_del_timer_sync);
+
+-#ifdef CONFIG_SMP
++#if defined(CONFIG_SMP) || defined(CONFIG_PREEMPT_RT_FULL)
+ /**
+ * del_timer_sync - deactivate a timer and wait for the handler to finish.
+ * @timer: the timer to be deactivated
@@ -1123,7 +1153,7 @@ int del_timer_sync(struct timer_list *ti
int ret = try_to_del_timer_sync(timer);
if (ret >= 0)
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
new file mode 100644
index 0000000..eefb8be
--- /dev/null
+++ b/debian/patches/features/all/rt/trace-latency-hist-Consider-new-argument-when-probin.patch
@@ -0,0 +1,38 @@
+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-rt3.tar.xz
+
+The sched_switch tracer has got a new argument. Fix the latency tracer
+accordingly.
+
+Recently: c73464b1c843 ("sched/core: Fix trace_sched_switch()") since
+v4.4-rc1.
+
+Signed-off-by: Carsten Emde <C.Emde at osadl.org>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
+---
+ kernel/trace/latency_hist.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/kernel/trace/latency_hist.c
++++ b/kernel/trace/latency_hist.c
+@@ -117,7 +117,7 @@ static char *wakeup_latency_hist_dir_sha
+ static notrace void probe_wakeup_latency_hist_start(void *v,
+ struct task_struct *p);
+ static notrace void probe_wakeup_latency_hist_stop(void *v,
+- struct task_struct *prev, struct task_struct *next);
++ bool preempt, struct task_struct *prev, struct task_struct *next);
+ static notrace void probe_sched_migrate_task(void *,
+ struct task_struct *task, int cpu);
+ static struct enable_data wakeup_latency_enabled_data = {
+@@ -907,7 +907,7 @@ static notrace void probe_wakeup_latency
+ }
+
+ static notrace void probe_wakeup_latency_hist_stop(void *v,
+- struct task_struct *prev, struct task_struct *next)
++ bool preempt, struct task_struct *prev, struct task_struct *next)
+ {
+ unsigned long flags;
+ int cpu = task_cpu(next);
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 6283a8a..039ba96 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 025ddea..8f21c3c 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
1)enqueue_to_backlog() (called from netif_rx) should be
bind to a particluar CPU. This can be achieved by
@@ -38,7 +38,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
--- a/net/core/dev.c
+++ b/net/core/dev.c
-@@ -3540,7 +3540,7 @@ static int netif_rx_internal(struct sk_b
+@@ -3575,7 +3575,7 @@ static int netif_rx_internal(struct sk_b
struct rps_dev_flow voidflow, *rflow = &voidflow;
int cpu;
@@ -47,7 +47,7 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
rcu_read_lock();
cpu = get_rps_cpu(skb->dev, skb, &rflow);
-@@ -3550,13 +3550,13 @@ static int netif_rx_internal(struct sk_b
+@@ -3585,13 +3585,13 @@ static int netif_rx_internal(struct sk_b
ret = enqueue_to_backlog(skb, cpu, &rflow->last_qtail);
rcu_read_unlock();
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 0bb72af..f2f7329 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 fcf0a91..d0557a8 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 e5d5723..f628ab2 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 3806f8f..ad0f75d 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 bdfbb52..9194339 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 f2fa230..552b34a 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 41f64e8..f067f14 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 05d0bee..7f70ef7 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
---
kernel/sched/core.c | 80 ++++++++------------------------------------
@@ -32,7 +32,7 @@ Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt2.
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
-@@ -1744,10 +1744,6 @@ static inline void ttwu_activate(struct
+@@ -1735,10 +1735,6 @@ static inline void ttwu_activate(struct
{
activate_task(rq, p, en_flags);
p->on_rq = TASK_ON_RQ_QUEUED;
@@ -43,7 +43,7 @@ Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt2.
}
/*
-@@ -2064,52 +2060,6 @@ try_to_wake_up(struct task_struct *p, un
+@@ -2055,52 +2051,6 @@ try_to_wake_up(struct task_struct *p, un
}
/**
@@ -96,7 +96,7 @@ Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt2.
* wake_up_process - Wake up a specific process
* @p: The process to be woken up.
*
-@@ -3343,21 +3293,6 @@ static void __sched notrace __schedule(b
+@@ -3282,21 +3232,6 @@ static void __sched notrace __schedule(b
} else {
deactivate_task(rq, prev, DEQUEUE_SLEEP);
prev->on_rq = 0;
@@ -118,7 +118,7 @@ Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt2.
}
switch_count = &prev->nvcsw;
}
-@@ -3390,6 +3325,14 @@ static inline void sched_submit_work(str
+@@ -3329,6 +3264,14 @@ static inline void sched_submit_work(str
{
if (!tsk->state || tsk_is_pi_blocked(tsk))
return;
@@ -133,7 +133,7 @@ Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt2.
/*
* If we are going to sleep and we have plugged IO queued,
* make sure to submit it to avoid deadlocks.
-@@ -3398,6 +3341,12 @@ static inline void sched_submit_work(str
+@@ -3337,6 +3280,12 @@ static inline void sched_submit_work(str
blk_schedule_flush_plug(tsk);
}
@@ -146,7 +146,7 @@ Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt2.
asmlinkage __visible void __sched schedule(void)
{
struct task_struct *tsk = current;
-@@ -3408,6 +3357,7 @@ asmlinkage __visible void __sched schedu
+@@ -3347,6 +3296,7 @@ asmlinkage __visible void __sched schedu
__schedule(false);
sched_preempt_enable_no_resched();
} while (need_resched());
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 ccfea96..b00382d 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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.
@@ -44,7 +44,7 @@ Cc: Steven Rostedt <rostedt at goodmis.org>
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
-@@ -3439,9 +3439,8 @@ static void __sched notrace __schedule(b
+@@ -3378,9 +3378,8 @@ static void __sched notrace __schedule(b
static inline void sched_submit_work(struct task_struct *tsk)
{
@@ -55,7 +55,7 @@ Cc: Steven Rostedt <rostedt at goodmis.org>
/*
* If a worker went to sleep, notify and ask workqueue whether
* it wants to wake up a task to maintain concurrency.
-@@ -3449,6 +3448,10 @@ static inline void sched_submit_work(str
+@@ -3388,6 +3387,10 @@ static inline void sched_submit_work(str
if (tsk->flags & PF_WQ_WORKER)
wq_worker_sleeping(tsk);
diff --git a/debian/patches/features/all/rt/workqueue-use-locallock.patch b/debian/patches/features/all/rt/workqueue-use-locallock.patch
index a062e30..544d1a5 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 9a78a03..173bca0 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 f209c3b..04641d4 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 833cd8c..40a2f63 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 d7c19fb..768f076 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 1c1ae2d..b87c9b5 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 7cf458a..5348c23 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 612427b..b19afe8 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 d11b3f2..7ad7c71 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 a642255..0ab1b68 100644
--- a/debian/patches/features/all/rt/x86-preempt-lazy.patch
+++ b/debian/patches/features/all/rt/x86-preempt-lazy.patch
@@ -1,19 +1,19 @@
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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
Implement the x86 pieces for lazy preempt.
Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
---
arch/x86/Kconfig | 1 +
- arch/x86/entry/common.c | 2 +-
+ arch/x86/entry/common.c | 4 ++--
arch/x86/entry/entry_32.S | 16 ++++++++++++++++
arch/x86/entry/entry_64.S | 16 ++++++++++++++++
arch/x86/include/asm/thread_info.h | 6 ++++++
arch/x86/kernel/asm-offsets.c | 2 ++
- 6 files changed, 42 insertions(+), 1 deletion(-)
+ 6 files changed, 43 insertions(+), 2 deletions(-)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -27,6 +27,15 @@ Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
select ANON_INODES
--- a/arch/x86/entry/common.c
+++ b/arch/x86/entry/common.c
+@@ -220,7 +220,7 @@ long syscall_trace_enter(struct pt_regs
+
+ #define EXIT_TO_USERMODE_LOOP_FLAGS \
+ (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_UPROBE | \
+- _TIF_NEED_RESCHED | _TIF_USER_RETURN_NOTIFY)
++ _TIF_NEED_RESCHED_MASK | _TIF_USER_RETURN_NOTIFY)
+
+ static void exit_to_usermode_loop(struct pt_regs *regs, u32 cached_flags)
+ {
@@ -236,7 +236,7 @@ static void exit_to_usermode_loop(struct
/* We have work to do. */
local_irq_enable();
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 f6062ba..3b7b01c 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 43a60e4..82a1def 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 8bf1b02..4dfb559 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-rt2.tar.xz
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.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 b72e03e..d81c2c4 100644
--- a/debian/patches/series-rt
+++ b/debian/patches/series-rt
@@ -13,6 +13,11 @@
############################################################
# Stuff broken upstream, patches submitted
############################################################
+features/all/rt/btrfs-initialize-the-seq-counter-in-struct-btrfs_dev.patch
+features/all/rt/sched-use-tsk_cpus_allowed-instead-of-accessing-cpus.patch
+features/all/rt/sched-provide-a-tsk_nr_cpus_allowed-helper.patch
+features/all/rt/drivers-cpuidle-coupled-fix-warning-cpuidle_coupled_.patch
+features/all/rt/drivers-media-vsp1_video-fix-compile-error.patch
############################################################
# Stuff which needs addressing upstream, but requires more
@@ -63,7 +68,6 @@ features/all/rt/kernel-SRCU-provide-a-static-initializer.patch
############################################################
# Stuff which should go upstream ASAP
############################################################
-features/all/rt/0009-ARM-OMAP2-Drop-the-concept-of-certain-power-domains-.patch
# SCHED BLOCK/WQ
features/all/rt/block-shorten-interrupt-disabled-regions.patch
@@ -135,6 +139,8 @@ features/all/rt/pci-access-use-__wake_up_all_locked.patch
# TRACING
features/all/rt/latency-hist.patch
+features/all/rt/latency_hist-update-sched_wakeup-probe.patch
+features/all/rt/trace-latency-hist-Consider-new-argument-when-probin.patch
# HW LATENCY DETECTOR - this really wants a rewrite
features/all/rt/hwlatdetect.patch
@@ -227,7 +233,6 @@ 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-rmap-retry-lock-check-in-anon_vma_free.patch_vma_free.patch
# RADIX TREE
features/all/rt/radix-tree-rt-aware.patch
@@ -294,6 +299,7 @@ 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/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
# RAID5
@@ -319,6 +325,8 @@ features/all/rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch
# RTMUTEX Fallout
features/all/rt/tasklist-lock-fix-section-conflict.patch
+#fold
+features/all/rt/ptrace-don-t-open-IRQs-in-ptrace_freeze_traced-too-e.patch
# RCU
features/all/rt/peter_zijlstra-frob-rcu.patch
@@ -407,6 +415,14 @@ features/all/rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch
features/all/rt/net__Make_synchronize-rcu_expedited_conditional-on-non-rt
features/all/rt/skbufhead-raw-lock.patch
features/all/rt/net-core-cpuhotplug-drain-input_pkt_queue-lockless.patch
+features/all/rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch
+features/all/rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch
+
+# NETWORK livelock fix
+features/all/rt/net-tx-action-avoid-livelock-on-rt.patch
+
+# NETWORK DEBUGGING AID
+features/all/rt/ping-sysrq.patch
# irqwork
features/all/rt/irqwork-push_most_work_into_softirq_context.patch
@@ -432,12 +448,6 @@ features/all/rt/ARM-enable-irq-in-translation-section-permission-fau.patch
# ARM64
features/all/rt/arm64-xen--Make-XEN-depend-on-non-rt.patch
-# NETWORK livelock fix
-features/all/rt/net-tx-action-avoid-livelock-on-rt.patch
-
-# NETWORK DEBUGGING AID
-features/all/rt/ping-sysrq.patch
-
# KGDB
features/all/rt/kgb-serial-hackaround.patch
@@ -501,6 +511,7 @@ features/all/rt/scsi-qla2xxx-fix-bug-sleeping-function-called-from-invalid-conte
# NET
features/all/rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch
features/all/rt/net-another-local-irq-disable-alloc-atomic-headache.patch
+features/all/rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch
features/all/rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch
features/all/rt/net-make-devnet_rename_seq-a-mutex.patch
@@ -521,10 +532,12 @@ features/all/rt/rcu-make-RCU_BOOST-default-on-RT.patch
# PREEMPT LAZY
features/all/rt/preempt-lazy-support.patch
+features/all/rt/preempt-lazy-check-preempt_schedule.patch
features/all/rt/x86-preempt-lazy.patch
features/all/rt/arm-preempt-lazy-support.patch
features/all/rt/powerpc-preempt-lazy-support.patch
features/all/rt/arch-arm64-Add-lazy-preempt-support.patch
+features/all/rt/arm-arm64-lazy-preempt-add-TIF_NEED_RESCHED_LAZY-to-.patch
# LEDS
features/all/rt/leds-trigger-disable-CPU-trigger-on-RT.patch
@@ -553,9 +566,5 @@ features/all/rt/md-disable-bcache.patch
# WORKQUEUE SIGH
features/all/rt/workqueue-prevent-deadlock-stall.patch
-# TRACING
-features/all/rt/latency_hist-update-sched_wakeup-probe.patch
-features/all/rt/latency_hist-update-sched_switch-probe.patch
-
# Add RT to version
features/all/rt/localversion.patch
--
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