Yanfei Xu 6c2787f2a2 locking: Remove rcu_read_{,un}lock() for preempt_{dis,en}able() ... preempt_disable/enable() is equal to RCU read-side crital section, and the spinning codes in mutex and rwsem could ensure that the preemption is disabled. So let's remove the unnecessary rcu_read_lock/unlock for saving some cycles in hot codes. Signed-off-by: Yanfei Xu <yanfei.xu@windriver.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Waiman Long <longman@redhat.com> Link: https://lore.kernel.org/r/20211013134154.1085649-2-yanfei.xu@windriver.com		2021-10-19 17:27:06 +02:00
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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	lockdep: Improve comments in wait-type checks	2021-09-17 15:08:45 +02:00
locktorture.c	locktorture: Count lock readers	2021-07-27 11:39:30 -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	rtmutex: Wake up the waiters lockless while dropping the read lock.	2021-10-01 13:57:52 +02:00
rwbase_rt.c	locking/rwbase: Optimize rwbase_read_trylock	2021-10-07 13:51:07 +02:00
rwsem.c	locking: Remove rcu_read_{,un}lock() for preempt_{dis,en}able()	2021-10-19 17:27:06 +02:00
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/rwlock: Provide RT variant	2021-08-17 17:50:51 +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