Linux 4.9.115-rt94-rc1

Hello RT folks!

This patchset brings back many RT-specific fixes that have gone into subsequent 4.14-rt and 4.16-rt releases.

One of my x86 boxes very intermittently triggers a WARN_ON() on bootup in migrate_enable(), which I'm still trying to triage. If you can more reliably reproduce this, please let me know.

This release candidate will not be pushed to the git tree.

To build 4.9.115-rt94-rc1 directly, the following patches should be applied:

http://www.kernel.org/pub/linux/kernel/v4.x/linux-4.9.tar.xz

http://www.kernel.org/pub/linux/kernel/v4.x/patch-4.9.115.xz

http://www.kernel.org/pub/linux/kernel/projects/rt/4.9/patch-4.9.115-rt94-rc1.patch.xz

If all goes well with testing, this rc will be promoted to an official release on 8/16/2018.

Please go forth and test!

Thanks,
Julia

---
Boqun Feng (1):
rtmutex: Make rt_mutex_futex_unlock() safe for irq-off callsites

Julia Cartwright (4):
locallock: provide {get,put}_locked_ptr() variants
squashfs: make use of local lock in multi_cpu decompressor
seqlock: provide the same ordering semantics as mainline Linux 4.9.115-rt94-rc1

Paul E. McKenney (1):
rcu: Suppress lockdep false-positive ->boost_mtx complaints

Peter Zijlstra (4):
futex: Fix pi_state->owner serialization
futex: Fix more put_pi_state() vs. exit_pi_state_list() races
futex: Avoid violating the 10th rule of futex
futex: Fix OWNER_DEAD fixup

Sebastian Andrzej Siewior (12):
rcu: Do not include rtmutex_common.h unconditionally sched, tracing: Fix trace_sched_pi_setprio() for deboosting
crypto: limit more FPU-enabled sections
arm*: disable NEON in kernel mode
mm/slub: close possible memory-leak in kmem_cache_alloc_bulk()
locking: add types.h
net: use task_struct instead of CPU number as the queue owner on -RT Revert "rt,ntp: Move call to schedule_delayed_work() to helper thread" Revert "block: blk-mq: Use swait"
block: blk-mq: move blk_queue_usage_counter_release() into process
context
alarmtimer: Prevent live lock in alarm_cancel()
posix-timers: move the rcu head out of the union

 arch/arm/Kconfig                           |   2 +-
 arch/arm64/crypto/Kconfig                  |  14 +-
 arch/x86/crypto/camellia_aesni_avx2_glue.c |  20 +++
 arch/x86/crypto/camellia_aesni_avx_glue.c  |  19 +++
 arch/x86/crypto/cast6_avx_glue.c           |  24 +++-
 arch/x86/crypto/chacha20_glue.c            |   9 +-
 arch/x86/crypto/serpent_avx2_glue.c        |  19 +++
 arch/x86/crypto/serpent_avx_glue.c         |  23 +++-
 arch/x86/crypto/serpent_sse2_glue.c        |  23 +++-
 arch/x86/crypto/twofish_avx_glue.c         |  27 +++-
 arch/x86/include/asm/fpu/api.h             |   1 +
 arch/x86/kernel/fpu/core.c                 |  12 ++
 block/blk-core.c                           |  22 +++-
 block/blk-mq.c                             |   6 +-
 fs/squashfs/decompressor_multi_percpu.c    |  16 ++-
 include/linux/blkdev.h                     |   4 +-
 include/linux/locallock.h                  |  10 ++
 include/linux/netdevice.h                  |  54 +++++++-
 include/linux/posix-timers.h               |   2 +-
 include/linux/seqlock.h                    |   1 +
 include/linux/spinlock_types_raw.h         |   2 +
 include/trace/events/sched.h               |   4 +-
 kernel/futex.c                             | 144 ++++++++++++++++-----
 kernel/locking/rtmutex.c                   |  31 +++--
 kernel/locking/rtmutex_common.h            |   1 +
 kernel/rcu/tree_plugin.h                   |   5 +-
 kernel/time/alarmtimer.c                   |   2 +-
 kernel/time/ntp.c                          |  26 ----
 kernel/time/posix-timers.c                 |   4 +-
 localversion-rt                            |   2 +-
 mm/slub.c                                  |   1 +
 net/core/dev.c                             |   6 +-
 32 files changed, 412 insertions(+), 124 deletions(-)

2.18.0