linux/kernel/locking
Linus Torvalds a15286c63d Locking changes for this cycle:
- Core locking & atomics:
 
      - Convert all architectures to ARCH_ATOMIC: move every
        architecture to ARCH_ATOMIC, then get rid of ARCH_ATOMIC
        and all the transitory facilities and #ifdefs.
 
        Much reduction in complexity from that series:
 
            63 files changed, 756 insertions(+), 4094 deletions(-)
 
      - Self-test enhancements
 
  - Futexes:
 
      - Add the new FUTEX_LOCK_PI2 ABI, which is a variant that
        doesn't set FLAGS_CLOCKRT (.e. uses CLOCK_MONOTONIC).
 
        [ The temptation to repurpose FUTEX_LOCK_PI's implicit
          setting of FLAGS_CLOCKRT & invert the flag's meaning
          to avoid having to introduce a new variant was
          resisted successfully. ]
 
      - Enhance futex self-tests
 
  - Lockdep:
 
      - Fix dependency path printouts
      - Optimize trace saving
      - Broaden & fix wait-context checks
 
  - Misc cleanups and fixes.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking updates from Ingo Molnar:

 - Core locking & atomics:

     - Convert all architectures to ARCH_ATOMIC: move every architecture
       to ARCH_ATOMIC, then get rid of ARCH_ATOMIC and all the
       transitory facilities and #ifdefs.

       Much reduction in complexity from that series:

           63 files changed, 756 insertions(+), 4094 deletions(-)

     - Self-test enhancements

 - Futexes:

     - Add the new FUTEX_LOCK_PI2 ABI, which is a variant that doesn't
       set FLAGS_CLOCKRT (.e. uses CLOCK_MONOTONIC).

       [ The temptation to repurpose FUTEX_LOCK_PI's implicit setting of
         FLAGS_CLOCKRT & invert the flag's meaning to avoid having to
         introduce a new variant was resisted successfully. ]

     - Enhance futex self-tests

 - Lockdep:

     - Fix dependency path printouts

     - Optimize trace saving

     - Broaden & fix wait-context checks

 - Misc cleanups and fixes.

* tag 'locking-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (52 commits)
  locking/lockdep: Correct the description error for check_redundant()
  futex: Provide FUTEX_LOCK_PI2 to support clock selection
  futex: Prepare futex_lock_pi() for runtime clock selection
  lockdep/selftest: Remove wait-type RCU_CALLBACK tests
  lockdep/selftests: Fix selftests vs PROVE_RAW_LOCK_NESTING
  lockdep: Fix wait-type for empty stack
  locking/selftests: Add a selftest for check_irq_usage()
  lockding/lockdep: Avoid to find wrong lock dep path in check_irq_usage()
  locking/lockdep: Remove the unnecessary trace saving
  locking/lockdep: Fix the dep path printing for backwards BFS
  selftests: futex: Add futex compare requeue test
  selftests: futex: Add futex wait test
  seqlock: Remove trailing semicolon in macros
  locking/lockdep: Reduce LOCKDEP dependency list
  locking/lockdep,doc: Improve readability of the block matrix
  locking/atomics: atomic-instrumented: simplify ifdeffery
  locking/atomic: delete !ARCH_ATOMIC remnants
  locking/atomic: xtensa: move to ARCH_ATOMIC
  locking/atomic: sparc: move to ARCH_ATOMIC
  locking/atomic: sh: move to ARCH_ATOMIC
  ...
2021-06-28 11:45:29 -07:00
..
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: Fix typos in comments 2021-03-22 02:45:52 +01:00
lockdep_states.h locking/lockdep: Rework FS_RECLAIM annotation 2017-08-10 12:29:03 +02:00
lockdep.c Locking changes for this cycle: 2021-06-28 11:45:29 -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/rtmutex: Move debug functions as inlines into common header 2021-03-29 15:57:04 +02:00
mcs_spinlock.h locking: Fix typos in comments 2021-03-22 02:45:52 +01:00
mutex-debug.c locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal 2021-05-18 12:53:51 +02:00
mutex-debug.h locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal 2021-05-18 12:53:51 +02:00
mutex.c locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal 2021-05-18 12:53:51 +02:00
mutex.h locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal 2021-05-18 12:53:51 +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_common.h locking/rtmutex: Move debug functions as inlines into common header 2021-03-29 15:57:04 +02:00
rtmutex.c locking/rtmutex: Clean up signal handling in __rt_mutex_slowlock() 2021-03-29 15:57:05 +02:00
rwsem.c locking: Fix typos in comments 2021-03-22 02:45:52 +01:00
semaphore.c kernel: delete repeated words in comments 2021-02-26 09:41:03 -08:00
spinlock_debug.c lockdep: Introduce wait-type checks 2020-03-21 16:00:24 +01:00
spinlock.c locking: Fix typos in comments 2021-03-22 02:45:52 +01:00
test-ww_mutex.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 9 2019-05-21 11:28:40 +02:00