Zqiang 8f556a326c locking/rtmutex: Fix incorrect condition in rtmutex_spin_on_owner() ...

Optimistic spinning needs to be terminated when the spinning waiter is not
longer the top waiter on the lock, but the condition is negated. It
terminates if the waiter is the top waiter, which is defeating the whole
purpose.

Fixes: c3123c4314 ("locking/rtmutex: Dont dereference waiter lockless")
Signed-off-by: Zqiang <qiang1.zhang@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20211217074207.77425-1-qiang1.zhang@intel.com

2021-12-18 10:55:51 +01:00

..

irqflag-debug.c

lockdep: Noinstr annotate warn_bogus_irq_restore()

2021-02-10 14:44:39 +01:00

lock_events_list.h

locking/rwsem: Remove reader optimistic spinning

2020-12-09 17:08:48 +01:00

lock_events.c

locking/lock_events: Don't show pvqspinlock events on bare metal

2019-04-10 10:56:05 +02:00

lock_events.h

locking/lock_events: Use raw_cpu_{add,inc}() for stats

2019-06-03 12:32:56 +02:00

lockdep_internals.h

lockdep: Allow tuning tracing capacity constants.

2021-04-05 20:33:57 +09:00

lockdep_proc.c

locking/lockdep: Fix meaningless /proc/lockdep output of lock classes on !CONFIG_PROVE_LOCKING

2021-07-05 10:44:52 +02:00

lockdep_states.h

locking/lockdep: Rework FS_RECLAIM annotation

2017-08-10 12:29:03 +02:00

lockdep.c

Merge branch 'akpm' (patches from Andrew)

2021-11-09 10:11:53 -08:00

locktorture.c

locktorture: Warn on individual lock_torture_init() error conditions

2021-09-13 16:36:16 -07:00

Makefile

locking/ww_mutex: Implement rtmutex based ww_mutex API functions

2021-08-17 19:05:26 +02:00

mcs_spinlock.h

locking: Fix typos in comments

2021-03-22 02:45:52 +01:00

mutex-debug.c

locking/ww_mutex: Gather mutex_waiter initialization

2021-08-17 19:04:41 +02:00

mutex.c

locking: Remove rcu_read_{,un}lock() for preempt_{dis,en}able()

2021-10-19 17:27:06 +02:00

mutex.h

locking/mutex: Move the 'struct mutex_waiter' definition from <linux/mutex.h> to the internal header

2021-08-17 18:24:31 +02:00

osq_lock.c

locking: Fix typos in comments

2021-03-22 02:45:52 +01:00

percpu-rwsem.c

locking/percpu-rwsem: Use this_cpu_{inc,dec}() for read_count

2020-09-16 16:26:56 +02:00

qrwlock.c

locking/qrwlock: Cleanup queued_write_lock_slowpath()

2021-05-06 15:33:49 +02:00

qspinlock_paravirt.h

Revert "locking/pvqspinlock: Don't wait if vCPU is preempted"

2019-09-25 10:22:37 +02:00

qspinlock_stat.h

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157

2019-05-30 11:26:37 -07:00

qspinlock.c

x86/kvm: Add "nopvspin" parameter to disable PV spinlocks

2020-07-08 16:21:57 -04:00

rtmutex_api.c

locking/rtmutex: Prevent lockdep false positive with PI futexes

2021-08-17 19:06:02 +02:00

rtmutex_common.h

locking/rtmutex: Dont dereference waiter lockless

2021-08-25 15:42:32 +02:00

rtmutex.c

locking/rtmutex: Fix incorrect condition in rtmutex_spin_on_owner()

2021-12-18 10:55:51 +01:00

rwbase_rt.c

locking/rwbase: Optimize rwbase_read_trylock

2021-10-07 13:51:07 +02:00

rwsem.c

locking/rwsem: Optimize down_read_trylock() under highly contended case

2021-11-23 09:45:36 +01:00

semaphore.c

locking/semaphore: Add might_sleep() to down_*() family

2021-08-20 12:33:17 +02:00

spinlock_debug.c

locking/rwlock: Provide RT variant

2021-08-17 17:50:51 +02:00

spinlock_rt.c

locking/rt: Take RCU nesting into account for __might_resched()

2021-10-01 13:57:51 +02:00

spinlock.c

locking: Remove spin_lock_flags() etc

2021-10-30 16:37:28 +02:00

test-ww_mutex.c

locking/ww-mutex: Fix uninitialized use of ret in test_aa()

2021-10-01 13:57:49 +02:00

ww_mutex.h

locking/ww_mutex: Add rt_mutex based lock type and accessors

2021-08-17 19:05:11 +02:00

ww_rt_mutex.c

kernel/locking: Add context to ww_mutex_trylock()

2021-09-17 15:08:41 +02:00