locking primitives · Maintained

Maintainers

• M Peter Zijlstra <peterz@infradead.org>
• M Ingo Molnar <mingo@redhat.com>
• M Will Deacon <will@kernel.org>
• M Boqun Feng <boqun@kernel.org>
• R Waiman Long <longman@redhat.com>

Paths

• F Documentation/locking/
• F arch/*/include/asm/spinlock*.h
• F include/linux/local_lock*.h
• F include/linux/lockdep*.h
• F include/linux/mutex*.h
• F include/linux/rwlock*.h
• F include/linux/rwsem*.h
• F include/linux/seqlock.h
• F include/linux/spinlock*.h
• F kernel/locking/
• F lib/locking*.[ch]
• F rust/helpers/mutex.c
• F rust/helpers/spinlock.c
• F rust/kernel/sync/lock.rs
• F rust/kernel/sync/lock/
• F rust/kernel/sync/locked_by.rs
• X kernel/locking/locktorture.c

Last 30 days

Recent patches

Most-recent 30 patches in this subsystem on linux-arm-kernel (capped at 30), ordered by date desc.

• DORMANTno replies [PATCH v3] locking/hqlock_core: restore missing call in contention detection logic
  2026-05-12 · Fedorov Nikita <hidden>
• STALE138d [RFC PATCH v3 5/7] kernel: introduce general hq-spinlock support
  2026-04-15 · Fedorov Nikita <hidden>
• STALE138d [RFC PATCH v3 3/7] hq-spinlock: add contention detection
  2026-04-15 · Fedorov Nikita <hidden>
• STALE138d [RFC PATCH v3 4/7] hq-spinlock: add hq-spinlock tunables and debug statistics
  2026-04-15 · Fedorov Nikita <hidden>
• STALE138d [RFC PATCH v3 1/7] kernel: add hq-spinlock types
  2026-04-15 · Fedorov Nikita <hidden>
• STALE138d [RFC PATCH v3 2/7] hq-spinlock: implement inner logic
  2026-04-15 · Fedorov Nikita <hidden>
• STALE184d REVIEWED: 58 (58M) [PATCH v5 15/15] hwspinlock/treewide: refactor consumer.h from public header
  2026-03-19 · Wolfram Sang <wsa+renesas@sang-engineering.com>
• STALE184d [PATCH v5 10/15] hwspinlock: handle hwspinlock device allocation in the core
  2026-03-19 · Wolfram Sang <wsa+renesas@sang-engineering.com>
• STALE184d [PATCH v5 04/15] hwspinlock: add callback to fill private data of a hwspinlock
  2026-03-19 · Wolfram Sang <wsa+renesas@sang-engineering.com>
• STALE193d REVIEWED: 8 (8M) [PATCH v4 15/15] hwspinlock/treewide: refactor consumer.h from public header
  2026-03-10 · Wolfram Sang <wsa+renesas@sang-engineering.com>
• STALE199d REVIEWED: 8 (8M) [PATCH v3 15/15] hwspinlock/treewide: refactor consumer.h from public header
  2026-03-03 · Wolfram Sang <wsa+renesas@sang-engineering.com>
• STALE221d [RFC PATCH v2 13/13] hwspinlock: refactor consumer.h from public header
  2026-02-15 · Wolfram Sang <wsa+renesas@sang-engineering.com>
• STALE229d [RFC PATCH 2/4] hwspinlock: refactor existing headers into consumer.h
  2026-01-25 · Wolfram Sang <wsa+renesas@sang-engineering.com>
• STALE474d [PATCH v5 2/6] locking/mutex: implement mutex_lock_killable_nest_lock
  2025-05-12 · Maxim Levitsky <hidden>
• STALE474d [PATCH v5 1/6] locking/mutex: implement mutex_trylock_nested
  2025-05-12 · Maxim Levitsky <hidden>
• STALE508d [PATCH v4 4/5] locking/mutex: implement mutex_lock_killable_nest_lock
  2025-04-30 · Maxim Levitsky <hidden>
• STALE508d [PATCH v4 1/5] locking/mutex: implement mutex_trylock_nested
  2025-04-30 · Maxim Levitsky <hidden>
• STALE508d [PATCH v3 3/4] locking/mutex: implement mutex_lock_killable_nest_lock
  2025-04-30 · Maxim Levitsky <hidden>
• STALE528d Re: [PATCH v2 2/4] KVM: x86: move sev_lock/unlock_vcpus_for_migration to kvm_main.c
  2025-04-16 · Paolo Bonzini <pbonzini@redhat.com>
• STALE528d [PATCH v2 1/4] locking/mutex: implement mutex_trylock_nested
  2025-04-09 · Maxim Levitsky <hidden>
• STALE558d LANDED: 1 (0M) [PATCH bpf-next v4 09/25] rqspinlock: Protect pending bit owners from stalls
  2025-03-16 · Kumar Kartikeya Dwivedi <memxor@gmail.com>
• STALE558d LANDED: 1 (0M) [PATCH bpf-next v4 03/25] locking: Allow obtaining result of arch_mcs_spin_lock_contended
  2025-03-16 · Kumar Kartikeya Dwivedi <memxor@gmail.com>
• STALE558d LANDED: 1 (0M) [PATCH bpf-next v4 02/25] locking: Move common qspinlock helpers to a private header
  2025-03-16 · Kumar Kartikeya Dwivedi <memxor@gmail.com>
• STALE558d LANDED: 1 (0M) [PATCH bpf-next v4 01/25] locking: Move MCS struct definition to public header
  2025-03-16 · Kumar Kartikeya Dwivedi <memxor@gmail.com>
• STALE562d [PATCH bpf-next v3 22/25] bpf: Introduce rqspinlock kfuncs
  2025-03-03 · Kumar Kartikeya Dwivedi <memxor@gmail.com>
• STALE562d [PATCH bpf-next v3 18/25] rqspinlock: Add entry to Makefile, MAINTAINERS
  2025-03-03 · Kumar Kartikeya Dwivedi <memxor@gmail.com>
• STALE562d [PATCH bpf-next v3 17/25] rqspinlock: Add locktorture support
  2025-03-03 · Kumar Kartikeya Dwivedi <memxor@gmail.com>
• STALE562d [PATCH bpf-next v3 15/25] rqspinlock: Add helper to print a splat on timeout or deadlock
  2025-03-03 · Kumar Kartikeya Dwivedi <memxor@gmail.com>
• STALE562d [PATCH bpf-next v3 14/25] rqspinlock: Add basic support for CONFIG_PARAVIRT
  2025-03-03 · Kumar Kartikeya Dwivedi <memxor@gmail.com>
• STALE562d [PATCH bpf-next v3 13/25] rqspinlock: Add a test-and-set fallback
  2025-03-03 · Kumar Kartikeya Dwivedi <memxor@gmail.com>

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• DORMANTno replies [PATCH v3] locking/hqlock_core: restore missing call in contention detection logic
  2026-05-12 · Fedorov Nikita <hidden>