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linux/kernel/locking
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Tejun Heo 1460cb65a1 locking/mutex, sched/wait: Add mutex_lock_io() 
We sometimes end up propagating IO blocking through mutexes; however,
because there currently is no way of annotating mutex sleeps as
iowait, there are cases where iowait and /proc/stat:procs_blocked
report misleading numbers obscuring the actual state of the system.

This patch adds mutex_lock_io() so that mutex sleeps can be marked as
iowait in those cases.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: adilger.kernel@dilger.ca
Cc: jack@suse.com
Cc: kernel-team@fb.com
Cc: mingbo@fb.com
Cc: tytso@mit.edu
Link: http://lkml.kernel.org/r/1477673892-28940-4-git-send-email-tj@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-01-14 11:30:05 +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 Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
lockdep_states.h
lockdep.c xfs: updates for 4.10-rc1 2016-12-14 21:35:31 -08:00
locktorture.c lcoking/locktorture: Simplify the torture_runnable computation 2016-04-28 10:57:51 +02:00
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, sched/wait: Add mutex_lock_io() 2017-01-14 11:30:05 +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 locking/percpu-rwsem: Optimize readers and reduce global impact 2016-08-10 14:34:01 +02:00
qrwlock.c locking/core: Remove cpu_relax_lowlatency() users 2016-11-16 10:15:10 +01:00
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 don't open-code file_inode() 2016-12-04 18:29:28 -05:00
qspinlock.c locking/qspinlock: Use __this_cpu_dec() instead of full-blown this_cpu_dec() 2016-06-27 11:37:41 +02:00
rtmutex_common.h locking/rtmutex: Get rid of RT_MUTEX_OWNER_MASKALL 2016-12-02 11:13:57 +01:00
rtmutex-debug.c rtmutex: Cleanup deadlock detector debug logic 2014-06-21 22:05:30 +02:00
rtmutex-debug.h rtmutex: Cleanup deadlock detector debug logic 2014-06-21 22:05:30 +02:00
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: Cleanup deadlock detector debug logic 2014-06-21 22:05:30 +02:00
rwsem-spinlock.c locking/rwsem: Introduce basis for down_write_killable() 2016-04-13 10:42:20 +02:00
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 locking/rwsem: Add reader-owned state to the owner field 2016-06-08 15:16:59 +02:00
rwsem.h locking/rwsem: Protect all writes to owner by WRITE_ONCE() 2016-06-08 15:16:59 +02:00
semaphore.c locking/semaphore: Resolve some shadow warnings 2014-09-04 07:17:24 +02:00
spinlock_debug.c locking: Move the spinlock code to kernel/locking/ 2013-11-06 07:55:21 +01:00
spinlock.c spinlock: Add spin_lock_bh_nested() 2015-01-03 14:32:57 -05:00