[PATCH RT 00/22] Linux 4.1.15-rt18-rc1

[Steven Rostedt]

Dear RT Folks,

This is the RT stable review cycle of patch 4.1.15-rt18-rc1.

Please scream at me if I messed something up. Please test the patches too.

The -rc release will be uploaded to kernel.org and will be deleted when
the final release is out. This is just a review release (or release candidate).

The pre-releases will not be pushed to the git repository, only the
final release is.

If all goes well, this patch will be converted to the next main release
on 3/7/2016.

Enjoy,

-- Steve


To build 4.1.15-rt18-rc1 directly, the following patches should be applied:

  http://www.kernel.org/pub/linux/kernel/v3.x/linux-4.1.tar.xz

  http://www.kernel.org/pub/linux/kernel/v3.x/patch-4.1.15.xz

  http://www.kernel.org/pub/linux/kernel/projects/rt/4.1/patch-4.1.15-rt18-rc1.patch.xz

You can also build from 4.1.15-rt17 by applying the incremental patch:

http://www.kernel.org/pub/linux/kernel/projects/rt/4.1/incr/patch-4.1.15-rt17-rt18-rc1.patch.xz


Changes from 4.1.15-rt17:

---


Clark Williams (1):
      rcu/torture: Comment out rcu_bh ops on PREEMPT_RT_FULL

Mike Galbraith (3):
      sched,rt: __always_inline preemptible_lazy()
      drm,radeon,i915: Use preempt_disable/enable_rt() where recommended
      drm,i915: Use local_lock/unlock_irq() in intel_pipe_update_start/end()

Sebastian Andrzej Siewior (13):
      sched: reset task's lockless wake-queues on fork()
      ptrace: don't open IRQs in ptrace_freeze_traced() too early
      net: move xmit_recursion to per-task variable on -RT
      kernel/softirq: use cond_resched_rcu_qs() on -RT as well (run_ksoftirqd())
      net/core: protect users of napi_alloc_cache against reentrance
      preempt-lazy: Add the lazy-preemption check to preempt_schedule()
      softirq: split timer softirqs out of ksoftirqd
      net: provide a way to delegate processing a softirq to ksoftirqd
      latencyhist: disable jump-labels
      kernel: migrate_disable() do fastpath in atomic & irqs-off
      kernel: softirq: unlock with irqs on
      kernel/stop_machine: partly revert "stop_machine: Use raw spinlocks"
      kernel: sched: Fix preempt_disable_ip recodring for preempt_disable()

Steven Rostedt (Red Hat) (1):
      Linux 4.1.15-rt18-rc1

Thomas Gleixner (1):
      tick/broadcast: Make broadcast hrtimer irqsafe

Yang Shi (3):
      arm64: replace read_lock to rcu lock in call_step_hook
      trace: Use rcuidle version for preemptoff_hist trace point
      f2fs: Mutex can't be used by down_write_nest_lock()

----
 arch/Kconfig                            |   1 +
 arch/arm64/kernel/debug-monitors.c      |  21 +++---
 drivers/gpu/drm/i915/i915_irq.c         |   2 +
 drivers/gpu/drm/i915/intel_sprite.c     |  11 +--
 drivers/gpu/drm/radeon/radeon_display.c |   2 +
 fs/f2fs/f2fs.h                          |   4 +-
 include/linux/ftrace.h                  |  12 ++++
 include/linux/interrupt.h               |   8 +++
 include/linux/netdevice.h               |   9 +++
 include/linux/sched.h                   |   5 +-
 kernel/fork.c                           |   1 +
 kernel/ptrace.c                         |   6 +-
 kernel/rcu/rcutorture.c                 |   7 ++
 kernel/sched/core.c                     |  54 +++++++++------
 kernel/softirq.c                        | 116 +++++++++++++++++++++++++++-----
 kernel/stop_machine.c                   |  40 +++--------
 kernel/time/tick-broadcast-hrtimer.c    |   1 +
 kernel/trace/trace_irqsoff.c            |   8 +--
 localversion-rt                         |   2 +-
 net/core/dev.c                          |  43 ++++++++++--
 net/core/skbuff.c                       |   8 ++-
 21 files changed, 261 insertions(+), 100 deletions(-)