Thomas Gleixner 51711e825a locking/rtmutex: Prevent lockdep false positive with PI futexes ... On PREEMPT_RT the futex hashbucket spinlock becomes 'sleeping' and rtmutex based. That causes a lockdep false positive because some of the futex functions invoke spin_unlock(&hb->lock) with the wait_lock of the rtmutex associated to the pi_futex held. spin_unlock() in turn takes wait_lock of the rtmutex on which the spinlock is based which makes lockdep notice a lock recursion. Give the futex/rtmutex wait_lock a separate key. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20210815211305.750701219@linutronix.de		2021-08-17 19:06:02 +02:00
..
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 'core-rcu-2021.07.04' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu	2021-07-04 12:58:33 -07:00
locktorture.c	locking/locktorture: Fix incorrect use of ww_acquire_ctx in ww_mutex test	2021-03-19 12:13:10 +01:00
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/rtmutex: Add mutex variant for RT	2021-08-17 19:05:29 +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: Extend the rtmutex core to support ww_mutex	2021-08-17 19:05:23 +02:00
rtmutex.c	locking/rtmutex: Extend the rtmutex core to support ww_mutex	2021-08-17 19:05:23 +02:00
rwbase_rt.c	locking/rt: Add base code for RT rw_semaphore and rwlock	2021-08-17 17:12:22 +02:00
rwsem.c	locking/rtmutex: Extend the rtmutex core to support ww_mutex	2021-08-17 19:05:23 +02:00
semaphore.c	kernel: delete repeated words in comments	2021-02-26 09:41:03 -08:00
spinlock_debug.c	locking/rwlock: Provide RT variant	2021-08-17 17:50:51 +02:00
spinlock_rt.c	locking/rwlock: Provide RT variant	2021-08-17 17:50:51 +02:00
spinlock.c	locking/rwlock: Provide RT variant	2021-08-17 17:50:51 +02:00
test-ww_mutex.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 9	2019-05-21 11:28:40 +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	locking/ww_mutex: Implement rtmutex based ww_mutex API functions	2021-08-17 19:05:26 +02:00