linux-kernel - [GIT PULL] locking changes for v5.4

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Date:   Mon, 16 Sep 2019 13:41:10 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Will Deacon <will@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] locking changes for v5.4

Linus,

Please pull the latest locking-core-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking-core-for-linus

   # HEAD: e57d143091f1c0b1a98140a4d2e63e113afb62c0 mutex: Fix up mutex_waiter usage

This cycle's changes were:

 - Improve rwsem scalability
 - Add uninitialized rwsem debugging check
 - Reduce lockdep's stacktrace memory usage and add diagnostics
 - Misc cleanups, code consolidation and constification

 Thanks,

	Ingo

------------------>
Bart Van Assche (4):
      locking/lockdep: Make it clear that what lock_class::key points at is not modified
      stacktrace: Constify 'entries' arguments
      locking/lockdep: Reduce space occupied by stack traces
      locking/lockdep: Report more stack trace statistics

Davidlohr Bueso (1):
      locking/rwsem: Check for operations on an uninitialized rwsem

Mukesh Ojha (2):
      locking/mutex: Make __mutex_owner static to mutex.c
      locking/mutex: Use mutex flags macro instead of hard code

Peter Zijlstra (2):
      locking/qspinlock,x86: Clarify virt_spin_lock_key
      mutex: Fix up mutex_waiter usage

Waiman Long (1):
      locking/rwsem: Make handoff writer optimistically spin on owner


 arch/x86/include/asm/qspinlock.h   |  15 ++++
 include/linux/lockdep.h            |  11 +--
 include/linux/mutex.h              |  25 +-----
 include/linux/rwsem.h              |  10 +++
 include/linux/stacktrace.h         |   4 +-
 kernel/locking/lockdep.c           | 159 ++++++++++++++++++++++++++++---------
 kernel/locking/lockdep_internals.h |   9 ++-
 kernel/locking/lockdep_proc.c      |   8 +-
 kernel/locking/mutex.c             |  26 ++++++
 kernel/locking/rwsem.c             |  54 ++++++++++---
 kernel/stacktrace.c                |   4 +-
 11 files changed, 241 insertions(+), 84 deletions(-)