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linux/kernel/locking
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Peter Zijlstra 02ea9fc96f locking/rtmutex: Squash self-deadlock check for ww_rt_mutex. 
Similar to the issues in commits:

  6467822b8cc9 ("locking/rtmutex: Prevent spurious EDEADLK return caused by ww_mutexes")
  a055fcc132d4 ("locking/rtmutex: Return success on deadlock for ww_mutex waiters")

ww_rt_mutex_lock() should not return EDEADLK without first going through
the __ww_mutex logic to set the required state. In fact, the chain-walk
can deal with the spurious cycles (per the above commits) this check
warns about and is trying to avoid.

Therefore ignore this test for ww_rt_mutex and simply let things fall
in place.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20211129174654.668506-4-bigeasy@linutronix.de
2021-12-04 10:56:23 +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: Squash self-deadlock check for ww_rt_mutex.
2021-12-04 10:56:23 +01:00
rwbase_rt.c
locking/rwbase: Optimize rwbase_read_trylock
2021-10-07 13:51:07 +02:00
rwsem.c
locking/rwsem: Fix comments about reader optimistic lock stealing conditions
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: Remove rt_rwlock_is_contended().
2021-12-04 10:56:23 +01:00
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: Use a pointer in ww_mutex_trylock().
2021-11-17 14:48:49 +01:00