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

Most active threads (last 7 days)

• HOTtoday [PATCH v3 00/15] sched: introduce for_each_process_rculock and for_each_thread_rculock
  2026-09-11 08:00 · 1 reply in 7d · Ye Liu <hidden>
• WARM2d [PATCH v2 0/8] sched: introduce for_each_process_rculock and for_each_thread_rculock
  2026-09-07 08:14 · 1 reply in 7d · Ye Liu <hidden>

Active reviewers (last 30 days)

• Michal Hocko <mhocko@suse.com>
  2 attestations (2 Acked-by) · last on 2026-09-11
• SJ Park <sj@kernel.org>
  1 attestation (1 Reviewed-by) · last on 2026-09-11
• Lorenzo Stoakes (ARM) <ljs@kernel.org>
  1 attestation (1 Reviewed-by) · last on 2026-09-11
• Oleg Nesterov <oleg@redhat.com>
  1 attestation (1 Reviewed-by) · last on 2026-09-11

Recent patches

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

• HOTtoday REVIEWED: 16 (16M) [PATCH v3 08/15] locking/lockdep: convert process/thread iterators to for_each_*_rculock
  2026-09-11 · Ye Liu <hidden>
• WARM2d REVIEWED: 4 (4M) [PATCH v2 5/8] kernel: convert process/thread iterators to for_each_*_rculock
  2026-09-07 · Ye Liu <hidden>
• HOTtoday [PATCH 5/8] kernel: convert process/thread iterators to for_each_*_rcu
  2026-09-04 · Ye Liu <hidden>
• COLD35d [PATCH 4/5] tracing/lock: Use TRACE_EVENT_FN() for contended_release
  2026-08-04 · Dmitry Ilvokhin <hidden>
• COLD35d [PATCH 3/5] locking/qspinlock: Add contended_release tracepoint
  2026-08-04 · Dmitry Ilvokhin <hidden>
• STALE73d [PATCH v3 5/7] kernel: Use mutable list iterators
  2026-06-22 · Kaitao Cheng <hidden>
• STALE92d REVIEWED: 8 (8M) [PATCH v7 3/3] locking: Add contended_release tracepoint to sleepable locks
  2026-06-04 · Dmitry Ilvokhin <hidden>
• STALE92d REVIEWED: 1 (1M) [PATCH v7 2/3] locking/percpu-rwsem: Extract __percpu_up_read()
  2026-06-04 · Dmitry Ilvokhin <hidden>
• COLD46d [PATCH v6 7/7] locking: Add contended_release tracepoint to qrwlock
  2026-05-05 · Dmitry Ilvokhin <hidden>
• COLD46d REVIEWED: 8 (8M) [PATCH v6 5/7] locking: Add contended_release tracepoint to qspinlock
  2026-05-05 · Dmitry Ilvokhin <hidden>
• COLD46d REVIEWED: 1 (1M) [PATCH v6 2/7] locking/percpu-rwsem: Extract __percpu_up_read()
  2026-05-05 · Dmitry Ilvokhin <hidden>
• COLD46d REVIEWED: 8 (8M) [PATCH v6 3/7] locking: Add contended_release tracepoint to sleepable locks
  2026-05-05 · Dmitry Ilvokhin <hidden>
• STALE133d [PATCH v5 7/7] locking: Add contended_release tracepoint to qrwlock
  2026-04-16 · Dmitry Ilvokhin <hidden>
• STALE133d [PATCH v5 5/7] locking: Add contended_release tracepoint to qspinlock
  2026-04-16 · Dmitry Ilvokhin <hidden>
• STALE133d REVIEWED: 1 (1M) [PATCH v5 2/7] locking/percpu-rwsem: Extract __percpu_up_read()
  2026-04-16 · Dmitry Ilvokhin <hidden>
• STALE133d REVIEWED: 8 (8M) [PATCH v5 3/7] locking: Add contended_release tracepoint to sleepable locks
  2026-04-16 · Dmitry Ilvokhin <hidden>
• STALE149d REVIEWED: 1 (1M) [PATCH v4 2/5] locking/percpu-rwsem: Extract __percpu_up_read()
  2026-03-26 · Dmitry Ilvokhin <hidden>
• STALE149d [PATCH v4 3/5] locking: Add contended_release tracepoint to sleepable locks
  2026-03-26 · Dmitry Ilvokhin <hidden>
• STALE149d [PATCH v4 5/5] locking: Add contended_release tracepoint to spinning locks
  2026-03-26 · Dmitry Ilvokhin <hidden>
• STALE173d REVIEWED: 1 (1M) [PATCH v3 2/4] locking/percpu-rwsem: Extract __percpu_up_read()
  2026-03-18 · Dmitry Ilvokhin <hidden>
• STALE173d [PATCH v3 3/4] locking: Add contended_release tracepoint to sleepable locks
  2026-03-18 · Dmitry Ilvokhin <hidden>
• STALE173d [RFC PATCH v3 4/4] locking: Add contended_release tracepoint to spinning locks
  2026-03-18 · Dmitry Ilvokhin <hidden>
• STALE184d [RFC PATCH v2 2/3] locking/rtmutex: Add slow path variants for lock/unlock
  2026-03-11 · Yafang Shao <hidden>
• STALE184d [RFC PATCH v2 1/3] locking/mutex: Add slow path variants for lock/unlock
  2026-03-11 · Yafang Shao <hidden>
• STALE179d [PATCH v2 1/2] locking/percpu-rwsem: Extract __percpu_up_read()
  2026-03-10 · Dmitry Ilvokhin <hidden>
• STALE179d [PATCH v2 2/2] locking: Add contended_release tracepoint
  2026-03-10 · Dmitry Ilvokhin <hidden>
• STALE177d [PATCH v2 2/2] tree-wide: rename do_exit() to task_exit()
  2026-03-10 · Christian Brauner <brauner@kernel.org>
• STALE185d [PATCH RFC 3/3] locking: Wire up contended_release tracepoint
  2026-03-04 · Dmitry Ilvokhin <hidden>
• STALE185d [PATCH RFC 2/3] locking/percpu-rwsem: Extract __percpu_up_read_slowpath()
  2026-03-04 · Dmitry Ilvokhin <hidden>
• STALE187d Re: [RFC PATCH 1/2] locking: add mutex_lock_nospin()
  2026-03-04 · Peter Zijlstra <peterz@infradead.org>

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.

• STALE184d [RFC PATCH v2 1/3] locking/mutex: Add slow path variants for lock/unlock
  2026-03-11 · Yafang Shao <hidden>
• STALE184d [RFC PATCH v2 2/3] locking/rtmutex: Add slow path variants for lock/unlock
  2026-03-11 · Yafang Shao <hidden>
• STALE173d [PATCH v3 3/4] locking: Add contended_release tracepoint to sleepable locks
  2026-03-18 · Dmitry Ilvokhin <hidden>
• STALE133d [PATCH v5 7/7] locking: Add contended_release tracepoint to qrwlock
  2026-04-16 · Dmitry Ilvokhin <hidden>