linux/kernel/locking
Linus Torvalds 72b8944f14 Locking updates for v6.16:
Locking primitives:
 
   - Mark devm_mutex_init() as __must_check and fix drivers
     that didn't check the return code. (Thomas Weißschuh)
 
   - Reorganize <linux/local_lock.h> to better expose the
     internal APIs to local variables. (Sebastian Andrzej Siewior)
 
   - Remove OWNER_SPINNABLE in rwsem (Jinliang Zheng)
 
   - Remove redundant #ifdefs in the mutex code (Ran Xiaokai)
 
 Lockdep:
 
   - Avoid returning struct in lock_stats() (Arnd Bergmann)
 
   - Change `static const` into enum for LOCKF_*_IRQ_*
     (Arnd Bergmann)
 
   - Temporarily use synchronize_rcu_expedited() in
     lockdep_unregister_key() to speed things up.
     (Breno Leitao)
 
 Rust runtime:
 
   - Add #[must_use] to Lock::try_lock() (Jason Devers)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2025-07-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking updates from Ingo Molnar:
 "Locking primitives:

   - Mark devm_mutex_init() as __must_check and fix drivers that didn't
     check the return code (Thomas Weißschuh)

   - Reorganize <linux/local_lock.h> to better expose the internal APIs
     to local variables (Sebastian Andrzej Siewior)

   - Remove OWNER_SPINNABLE in rwsem (Jinliang Zheng)

   - Remove redundant #ifdefs in the mutex code (Ran Xiaokai)

  Lockdep:

   - Avoid returning struct in lock_stats() (Arnd Bergmann)

   - Change `static const` into enum for LOCKF_*_IRQ_* (Arnd Bergmann)

   - Temporarily use synchronize_rcu_expedited() in
     lockdep_unregister_key() to speed things up. (Breno Leitao)

  Rust runtime:

   - Add #[must_use] to Lock::try_lock() (Jason Devers)"

* tag 'locking-core-2025-07-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  lockdep: Speed up lockdep_unregister_key() with expedited RCU synchronization
  locking/mutex: Remove redundant #ifdefs
  locking/lockdep: Change 'static const' variables to enum values
  locking/lockdep: Avoid struct return in lock_stats()
  locking/rwsem: Use OWNER_NONSPINNABLE directly instead of OWNER_SPINNABLE
  rust: sync: Add #[must_use] to Lock::try_lock()
  locking/mutex: Mark devm_mutex_init() as __must_check
  leds: lp8860: Check return value of devm_mutex_init()
  spi: spi-nxp-fspi: Check return value of devm_mutex_init()
  local_lock: Move this_cpu_ptr() notation from internal to main header
2025-07-29 18:11:32 -07:00
..
irqflag-debug.c lockdep: Noinstr annotate warn_bogus_irq_restore() 2021-02-10 14:44:39 +01:00
lock_events.c locking/debug: Fix debugfs API return value checks to use IS_ERR() 2023-10-03 10:11:25 +02:00
lock_events.h locking/qspinlock: Always evaluate lockevent* non-event parameter once 2024-03-21 20:45:17 +01:00
lock_events_list.h bpf_res_spin_lock 2025-03-30 13:06:27 -07:00
lockdep.c lockdep: Speed up lockdep_unregister_key() with expedited RCU synchronization 2025-07-14 21:57:29 -07:00
lockdep_internals.h locking/lockdep: Change 'static const' variables to enum values 2025-07-14 21:57:29 -07:00
lockdep_proc.c locking/lockdep: Avoid struct return in lock_stats() 2025-07-14 21:57:20 -07:00
lockdep_states.h locking/lockdep: Rework FS_RECLAIM annotation 2017-08-10 12:29:03 +02:00
locktorture.c rqspinlock: Add locktorture support 2025-03-19 08:03:05 -07:00
Makefile locking/lockdep: Disable KASAN instrumentation of lockdep.c 2025-03-08 00:55:03 +01:00
mcs_spinlock.h locking: Allow obtaining result of arch_mcs_spin_lock_contended 2025-03-19 08:03:04 -07:00
mutex-debug.c locking/mutex: Add p->blocked_on wrappers for correctness checks 2025-07-14 17:16:32 +02:00
mutex.c Locking updates for v6.16: 2025-07-29 18:11:32 -07:00
mutex.h sched: Start blocked_on chain processing in find_proxy_task() 2025-07-14 17:16:33 +02:00
osq_lock.c locking/osq_lock: Use atomic_try_cmpxchg_release() in osq_unlock() 2024-10-25 10:01:50 +02:00
percpu-rwsem.c locking/percpu-rwsem: add freezable alternative to down_read 2025-04-07 09:37:16 +02:00
qrwlock.c locking: Add __lockfunc to slow path functions 2022-08-19 19:47:51 +02:00
qspinlock.c locking: Move common qspinlock helpers to a private header 2025-03-19 08:02:29 -07:00
qspinlock.h locking: Move common qspinlock helpers to a private header 2025-03-19 08:02:29 -07:00
qspinlock_paravirt.h locking/pvqspinlock: Convert fields of 'enum vcpu_state' to uppercase 2024-10-17 21:21:16 -07:00
qspinlock_stat.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
rtmutex.c locking/lock_events: Add locking events for rtmutex slow paths 2025-03-08 00:55:03 +01:00
rtmutex_api.c rtmutex_api: provide correct extern functions 2025-06-02 03:05:09 -04:00
rtmutex_common.h locking/rtmutex: Use the 'struct' keyword in kernel-doc comment 2025-03-08 00:52:01 +01:00
rwbase_rt.c locking/mutex: Remove wakeups from under mutex::wait_lock 2024-10-14 12:52:40 +02:00
rwsem.c locking/rwsem: Use OWNER_NONSPINNABLE directly instead of OWNER_SPINNABLE 2025-07-11 15:11:54 -07:00
semaphore.c hung_task: show the blocker task if the task is hung on semaphore 2025-05-11 17:54:08 -07:00
spinlock.c locking/spinlocks: Make __raw_* lock ops static 2024-10-07 09:28:35 +02:00
spinlock_debug.c sched.h: move pid helpers to pid.h 2023-12-20 19:26:31 -05:00
spinlock_rt.c Scheduler changes for v6.13: 2024-11-19 14:16:06 -08:00
test-ww_mutex.c locking/ww_mutex/test: Use swap() macro 2024-12-15 11:49:35 -08:00
ww_mutex.h locking/mutex: Add p->blocked_on wrappers for correctness checks 2025-07-14 17:16:32 +02:00
ww_rt_mutex.c locking/rtmutex: Avoid unconditional slowpath for DEBUG_RT_MUTEXES 2023-09-20 09:31:11 +02:00