android_kernel_motorola_sm6375/kernel/locking
Repository files (latest commit first)
Filename Latest commit message Latest commit date
Thomas Gleixner 84d82ec5b9 locking/rtmutex: Explain locking rules for rt_mutex_proxy_unlock()/init_proxy_locked()
While debugging the unlock vs. dequeue race which resulted in state
corruption of futexes the lockless nature of rt_mutex_proxy_unlock()
caused some confusion.

Add commentry to explain why it is safe to do this lockless. Add matching
comments to rt_mutex_init_proxy_locked() for completeness sake.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: David Daney <ddaney@caviumnetworks.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Will Deacon <will.deacon@arm.com>
Link: http://lkml.kernel.org/r/20161130210030.591941927@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-12-02 11:13:57 +01:00
..
lockdep.c locking/lockdep: Remove unused parameter from the add_lock_to_list() function 2016-11-11 08:25:20 +01:00
lockdep_internals.h lockdep: Limit static allocations if PROVE_LOCKING_SMALL is defined 2016-11-18 11:33:19 -08:00
lockdep_proc.c
lockdep_states.h
locktorture.c
Makefile locking/lglock: Remove lglock implementation 2016-09-22 15:25:56 +02:00
mcs_spinlock.h locking/core: Remove cpu_relax_lowlatency() users 2016-11-16 10:15:10 +01:00
mutex-debug.c locking/mutex: Rework mutex::owner 2016-10-25 11:31:50 +02:00
mutex-debug.h locking/mutex: Rework mutex::owner 2016-10-25 11:31:50 +02:00
mutex.c locking/mutex: Break out of expensive busy-loop on {mutex,rwsem}_spin_on_owner() when owner vCPU is preempted 2016-11-22 12:48:10 +01:00
mutex.h locking/mutex: Rework mutex::owner 2016-10-25 11:31:50 +02:00
osq_lock.c locking/osq: Break out of spin-wait busy waiting loop for a preempted vCPU in osq_lock() 2016-11-22 12:48:10 +01:00
percpu-rwsem.c
qrwlock.c locking/core: Remove cpu_relax_lowlatency() users 2016-11-16 10:15:10 +01:00
qspinlock.c
qspinlock_paravirt.h locking/pv-qspinlock: Use cmpxchg_release() in __pv_queued_spin_unlock() 2016-09-22 15:25:51 +02:00
qspinlock_stat.h
rtmutex-debug.c
rtmutex-debug.h
rtmutex.c locking/rtmutex: Explain locking rules for rt_mutex_proxy_unlock()/init_proxy_locked() 2016-12-02 11:13:57 +01:00
rtmutex.h
rtmutex_common.h locking/rtmutex: Get rid of RT_MUTEX_OWNER_MASKALL 2016-12-02 11:13:57 +01:00
rwsem-spinlock.c
rwsem-xadd.c locking/mutex: Break out of expensive busy-loop on {mutex,rwsem}_spin_on_owner() when owner vCPU is preempted 2016-11-22 12:48:10 +01:00
rwsem.c
rwsem.h
semaphore.c
spinlock.c
spinlock_debug.c