[GIT PULL] locking changes for v6.15

[Ingo Molnar]

Linus,

Please pull the latest locking/core Git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking-core-2025-03-22

   # HEAD: 35e6b537af85d97e0aafd8f2829dfa884a22df20 lockdep: Remove disable_irq_lockdep()

Locking changes for v6.15:

  Locking primitives:

    - Micro-optimize percpu_{,try_}cmpxchg{64,128}_op() and {,try_}cmpxchg{64,128}
      on x86 (Uros Bizjak)

    - mutexes: extend debug checks in mutex_lock() (Yunhui Cui)

    - Misc cleanups (Uros Bizjak)

  Lockdep:

    - Fix might_fault() lockdep check of current->mm->mmap_lock (Peter Zijlstra)

    - Don't disable interrupts on RT in disable_irq_nosync_lockdep.*()
      (Sebastian Andrzej Siewior)

    - Disable KASAN instrumentation of lockdep.c (Waiman Long)

    - Add kasan_check_byte() check in lock_acquire() (Waiman Long)

    - Misc cleanups (Sebastian Andrzej Siewior)

  Rust runtime integration:

    - Use Pin for all LockClassKey usages (Mitchell Levy)
    - sync: Add accessor for the lock behind a given guard (Alice Ryhl)
    - sync: condvar: Add wait_interruptible_freezable() (Alice Ryhl)
    - sync: lock: Add an example for Guard:: Lock_ref() (Boqun Feng)

  Split-lock detection feature (x86):

    - Fix warning mode with disabled mitigation mode (Maksim Davydov)

  Locking events:

    - Add locking events for rtmutex slow paths (Waiman Long)
    - Add locking events for lockdep (Waiman Long)

 Thanks,

	Ingo

------------------>
Alice Ryhl (2):
      rust: sync: Add accessor for the lock behind a given guard
      rust: sync: condvar: Add wait_interruptible_freezable()

Boqun Feng (1):
      rust: sync: lock: Add an example for Guard:: Lock_ref()

Maksim Davydov (1):
      x86/split_lock: Fix the delayed detection logic

Mitchell Levy (1):
      rust: lockdep: Use Pin for all LockClassKey usages

Peter Zijlstra (1):
      lockdep/mm: Fix might_fault() lockdep check of current->mm->mmap_lock

Sebastian Andrzej Siewior (2):
      lockdep: Don't disable interrupts on RT in disable_irq_nosync_lockdep.*()
      lockdep: Remove disable_irq_lockdep()

Uros Bizjak (3):
      x86/locking: Use ALT_OUTPUT_SP() for percpu_{,try_}cmpxchg{64,128}_op()
      x86/locking: Use asm_inline for {,try_}cmpxchg{64,128} emulations
      x86/locking: Remove semicolon from "lock" prefix

Waiman Long (4):
      locking/lock_events: Add locking events for rtmutex slow paths
      locking/lock_events: Add locking events for lockdep
      locking/lockdep: Disable KASAN instrumentation of lockdep.c
      locking/lockdep: Add kasan_check_byte() check in lock_acquire()

Yunhui Cui (1):
      locking/mutex: Add MUTEX_WARN_ON() into fast path


 arch/x86/include/asm/alternative.h |  2 +-
 arch/x86/include/asm/barrier.h     |  8 ++--
 arch/x86/include/asm/cmpxchg.h     |  4 +-
 arch/x86/include/asm/cmpxchg_32.h  | 36 ++++++++++--------
 arch/x86/include/asm/edac.h        |  2 +-
 arch/x86/include/asm/percpu.h      | 77 ++++++++++++++++++--------------------
 arch/x86/include/asm/sync_bitops.h | 12 +++---
 arch/x86/kernel/cpu/bus_lock.c     | 20 ++++++++--
 include/linux/interrupt.h          | 16 ++------
 kernel/locking/Makefile            |  3 +-
 kernel/locking/lock_events_list.h  | 28 ++++++++++++++
 kernel/locking/lockdep.c           | 17 ++++++++-
 kernel/locking/mutex.c             |  2 +
 kernel/locking/rtmutex.c           | 29 +++++++++++---
 mm/memory.c                        |  2 -
 rust/helpers/helpers.c             |  1 +
 rust/helpers/sync.c                | 13 +++++++
 rust/kernel/sync.rs                | 57 ++++++++++++++++++++++++++--
 rust/kernel/sync/condvar.rs        | 28 ++++++++++++--
 rust/kernel/sync/lock.rs           | 35 +++++++++++++++--
 rust/kernel/sync/lock/global.rs    |  5 ++-
 rust/kernel/sync/poll.rs           |  2 +-
 rust/kernel/task.rs                |  2 +
 rust/kernel/workqueue.rs           |  2 +-
 24 files changed, 294 insertions(+), 109 deletions(-)
 create mode 100644 rust/helpers/sync.c