android_kernel_motorola_sm6225/kernel/locking
Waiman Long d9d89d57be locking/ww_mutex: Simplify use_ww_ctx & ww_ctx handling
[ Upstream commit 5de2055d31ea88fd9ae9709ac95c372a505a60fa ]

The use_ww_ctx flag is passed to mutex_optimistic_spin(), but the
function doesn't use it. The frequent use of the (use_ww_ctx && ww_ctx)
combination is repetitive.

In fact, ww_ctx should not be used at all if !use_ww_ctx.  Simplify
ww_mutex code by dropping use_ww_ctx from mutex_optimistic_spin() an
clear ww_ctx if !use_ww_ctx. In this way, we can replace (use_ww_ctx &&
ww_ctx) by just (ww_ctx).

Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Link: https://lore.kernel.org/r/20210316153119.13802-2-longman@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-04-07 12:48:48 +02:00
..
lockdep.c locking/lockdep: Avoid recursion in lockdep_count_{for,back}ward_deps() 2020-04-17 10:48:42 +02:00
lockdep_internals.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
lockdep_proc.c locking/lockdep: Fix overflow in presentation of average lock-time 2020-09-03 11:24:21 +02:00
lockdep_states.h locking/lockdep: Rework FS_RECLAIM annotation 2017-08-10 12:29:03 +02:00
locktorture.c locktorture: Print ratio of acquisitions, not failures 2020-04-23 10:30:23 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mcs_spinlock.h locking/mcs: Use smp_cond_load_acquire() in MCS spin loop 2018-04-27 09:48:49 +02:00
mutex-debug.c locking/mutex: Rework mutex::owner 2016-10-25 11:31:50 +02:00
mutex-debug.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mutex.c locking/ww_mutex: Simplify use_ww_ctx & ww_ctx handling 2021-04-07 12:48:48 +02:00
mutex.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
osq_lock.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
percpu-rwsem.c locking/percpu-rwsem: Replace waitqueue with rcuwait 2017-01-14 11:14:35 +01:00
qrwlock.c locking/qrwlock: Prevent slowpath writers getting held up by fastpath 2017-10-25 10:57:25 +02:00
qspinlock.c locking/qspinlock, x86: Provide liveness guarantee 2018-12-21 14:15:12 +01:00
qspinlock_paravirt.h Revert "locking/pvqspinlock: Don't wait if vCPU is preempted" 2019-10-11 18:21:06 +02:00
qspinlock_stat.h locking/qspinlock: Add stat tracking for pending vs. slowpath 2018-04-27 09:48:53 +02:00
rtmutex-debug.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rtmutex-debug.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rtmutex.c rtmutex: Remove unused argument from rt_mutex_proxy_unlock() 2021-01-30 13:32:12 +01:00
rtmutex.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rtmutex_common.h rtmutex: Remove unused argument from rt_mutex_proxy_unlock() 2021-01-30 13:32:12 +01:00
rwsem-spinlock.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rwsem-xadd.c locking/rwsem: Prevent decrement of reader count before increment 2019-05-22 07:37:34 +02:00
rwsem.c locking/rwsem: Fix up_read_non_owner() warning with DEBUG_RWSEMS 2018-06-20 11:29:23 +02:00
rwsem.h locking/rwsem: Add a new RWSEM_ANONYMOUSLY_OWNED flag 2018-05-16 11:45:15 +02:00
semaphore.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h> 2017-03-02 08:42:34 +01:00
spinlock.c locking/core: Remove break_lock field when CONFIG_GENERIC_LOCKBREAK=y 2017-12-12 11:24:01 +01:00
spinlock_debug.c locking/spinlock/debug: Fix various data races 2020-01-12 12:17:05 +01:00
test-ww_mutex.c locking/ww_mutex: Fix runtime warning in the WW mutex selftest 2018-10-03 08:56:31 +02:00