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* [PATCH v3 00/14] kernel/locking: qspinlock improvements
@ 2018-04-26 10:34 Will Deacon
  2018-04-26 10:34 ` [PATCH v3 01/14] barriers: Introduce smp_cond_load_relaxed and atomic_cond_read_relaxed Will Deacon
                   ` (15 more replies)
  0 siblings, 16 replies; 41+ messages in thread
From: Will Deacon @ 2018-04-26 10:34 UTC (permalink / raw)
  To: linux-kernel
  Cc: linux-arm-kernel, peterz, mingo, boqun.feng, paulmck, longman,
	will.deacon

Hi all,

This is version three of the qspinlock patches I posted previously:

  v1: https://lkml.org/lkml/2018/4/5/496
  v2: https://lkml.org/lkml/2018/4/11/618

Changes since v2 include:
  * Fixed bisection issues
  * Fixed x86 PV build
  * Added patch proposing me as a co-maintainer
  * Rebased onto -rc2

All feedback welcome,

Will

--->8

Jason Low (1):
  locking/mcs: Use smp_cond_load_acquire() in mcs spin loop

Waiman Long (1):
  locking/qspinlock: Add stat tracking for pending vs slowpath

Will Deacon (12):
  barriers: Introduce smp_cond_load_relaxed and atomic_cond_read_relaxed
  locking/qspinlock: Merge struct __qspinlock into struct qspinlock
  locking/qspinlock: Bound spinning on pending->locked transition in
    slowpath
  locking/qspinlock/x86: Increase _Q_PENDING_LOOPS upper bound
  locking/qspinlock: Remove unbounded cmpxchg loop from locking slowpath
  locking/qspinlock: Kill cmpxchg loop when claiming lock from head of
    queue
  locking/qspinlock: Use atomic_cond_read_acquire
  locking/qspinlock: Use smp_cond_load_relaxed to wait for next node
  locking/qspinlock: Make queued_spin_unlock use smp_store_release
  locking/qspinlock: Elide back-to-back RELEASE operations with
    smp_wmb()
  locking/qspinlock: Use try_cmpxchg instead of cmpxchg when locking
  MAINTAINERS: Add myself as a co-maintainer for LOCKING PRIMITIVES

 MAINTAINERS                               |   1 +
 arch/x86/include/asm/qspinlock.h          |  21 ++-
 arch/x86/include/asm/qspinlock_paravirt.h |   3 +-
 include/asm-generic/atomic-long.h         |   2 +
 include/asm-generic/barrier.h             |  27 +++-
 include/asm-generic/qspinlock.h           |   2 +-
 include/asm-generic/qspinlock_types.h     |  32 +++-
 include/linux/atomic.h                    |   2 +
 kernel/locking/mcs_spinlock.h             |  10 +-
 kernel/locking/qspinlock.c                | 247 ++++++++++++++----------------
 kernel/locking/qspinlock_paravirt.h       |  44 ++----
 kernel/locking/qspinlock_stat.h           |   9 +-
 12 files changed, 209 insertions(+), 191 deletions(-)

-- 
2.1.4

^ permalink raw reply	[flat|nested] 41+ messages in thread

end of thread, other threads:[~2018-04-30  8:52 UTC | newest]

Thread overview: 41+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-04-26 10:34 [PATCH v3 00/14] kernel/locking: qspinlock improvements Will Deacon
2018-04-26 10:34 ` [PATCH v3 01/14] barriers: Introduce smp_cond_load_relaxed and atomic_cond_read_relaxed Will Deacon
2018-04-27  9:36   ` [tip:locking/core] locking/barriers: Introduce smp_cond_load_relaxed() and atomic_cond_read_relaxed() tip-bot for Will Deacon
2018-04-26 10:34 ` [PATCH v3 02/14] locking/qspinlock: Merge struct __qspinlock into struct qspinlock Will Deacon
2018-04-27  9:37   ` [tip:locking/core] locking/qspinlock: Merge 'struct __qspinlock' into 'struct qspinlock' tip-bot for Will Deacon
2018-04-26 10:34 ` [PATCH v3 03/14] locking/qspinlock: Bound spinning on pending->locked transition in slowpath Will Deacon
2018-04-27  9:37   ` [tip:locking/core] " tip-bot for Will Deacon
2018-04-26 10:34 ` [PATCH v3 04/14] locking/qspinlock/x86: Increase _Q_PENDING_LOOPS upper bound Will Deacon
2018-04-27  9:38   ` [tip:locking/core] " tip-bot for Will Deacon
2018-04-26 10:34 ` [PATCH v3 05/14] locking/qspinlock: Remove unbounded cmpxchg loop from locking slowpath Will Deacon
2018-04-26 15:53   ` Peter Zijlstra
2018-04-26 16:55     ` Will Deacon
2018-04-28 12:45       ` Peter Zijlstra
2018-04-30  8:53         ` Will Deacon
2018-04-26 20:16   ` Waiman Long
2018-04-27 10:16     ` Will Deacon
2018-04-27 11:01       ` [tip:locking/core] locking/qspinlock: Remove duplicate clear_pending() function from PV code tip-bot for Will Deacon
2018-04-27 13:09       ` [PATCH v3 05/14] locking/qspinlock: Remove unbounded cmpxchg loop from locking slowpath Waiman Long
2018-04-27  9:39   ` [tip:locking/core] locking/qspinlock: Remove unbounded cmpxchg() " tip-bot for Will Deacon
2018-04-26 10:34 ` [PATCH v3 06/14] locking/qspinlock: Kill cmpxchg loop when claiming lock from head of queue Will Deacon
2018-04-27  9:39   ` [tip:locking/core] locking/qspinlock: Kill cmpxchg() " tip-bot for Will Deacon
2018-04-26 10:34 ` [PATCH v3 07/14] locking/qspinlock: Use atomic_cond_read_acquire Will Deacon
2018-04-27  9:40   ` [tip:locking/core] locking/qspinlock: Use atomic_cond_read_acquire() tip-bot for Will Deacon
2018-04-26 10:34 ` [PATCH v3 08/14] locking/mcs: Use smp_cond_load_acquire() in mcs spin loop Will Deacon
2018-04-27  9:40   ` [tip:locking/core] locking/mcs: Use smp_cond_load_acquire() in MCS " tip-bot for Jason Low
2018-04-26 10:34 ` [PATCH v3 09/14] locking/qspinlock: Use smp_cond_load_relaxed to wait for next node Will Deacon
2018-04-27  9:41   ` [tip:locking/core] locking/qspinlock: Use smp_cond_load_relaxed() " tip-bot for Will Deacon
2018-04-26 10:34 ` [PATCH v3 10/14] locking/qspinlock: Make queued_spin_unlock use smp_store_release Will Deacon
2018-04-27  9:42   ` [tip:locking/core] locking/qspinlock: Use smp_store_release() in queued_spin_unlock() tip-bot for Will Deacon
2018-04-26 10:34 ` [PATCH v3 11/14] locking/qspinlock: Elide back-to-back RELEASE operations with smp_wmb() Will Deacon
2018-04-27  9:42   ` [tip:locking/core] " tip-bot for Will Deacon
2018-04-26 10:34 ` [PATCH v3 12/14] locking/qspinlock: Use try_cmpxchg instead of cmpxchg when locking Will Deacon
2018-04-27  9:43   ` [tip:locking/core] locking/qspinlock: Use try_cmpxchg() instead of cmpxchg() " tip-bot for Will Deacon
2018-04-26 10:34 ` [PATCH v3 13/14] locking/qspinlock: Add stat tracking for pending vs slowpath Will Deacon
2018-04-27  9:43   ` [tip:locking/core] locking/qspinlock: Add stat tracking for pending vs. slowpath tip-bot for Waiman Long
2018-04-26 10:34 ` [PATCH v3 14/14] MAINTAINERS: Add myself as a co-maintainer for LOCKING PRIMITIVES Will Deacon
2018-04-26 15:55   ` Peter Zijlstra
2018-04-27  9:44   ` [tip:locking/core] MAINTAINERS: Add myself as a co-maintainer for the locking subsystem tip-bot for Will Deacon
2018-04-26 15:54 ` [PATCH v3 00/14] kernel/locking: qspinlock improvements Peter Zijlstra
2018-04-27  9:33   ` Ingo Molnar
2018-04-26 20:18 ` Waiman Long

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