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 virtualization (capped at 30), ordered by date desc.

• COOLING7d [PATCH 05/17] locking/seqlock: assert static storage for DEFINE_SEQLOCK()
  2026-09-15 · Yury Norov <hidden>
• COLD49d [PATCH 4/5] tracing/lock: Use TRACE_EVENT_FN() for contended_release
  2026-08-04 · Dmitry Ilvokhin <hidden>
• COLD49d [PATCH 3/5] locking/qspinlock: Add contended_release tracepoint
  2026-08-04 · Dmitry Ilvokhin <hidden>
• DORMANTno replies [PATCH v3] locking/hqlock_core: restore missing call in contention detection logic
  2026-05-12 · Fedorov Nikita <hidden>
• COLD59d [PATCH v6 7/7] locking: Add contended_release tracepoint to qrwlock
  2026-05-05 · Dmitry Ilvokhin <hidden>
• COLD59d REVIEWED: 8 (8M) [PATCH v6 5/7] locking: Add contended_release tracepoint to qspinlock
  2026-05-05 · Dmitry Ilvokhin <hidden>
• COLD59d REVIEWED: 1 (1M) [PATCH v6 2/7] locking/percpu-rwsem: Extract __percpu_up_read()
  2026-05-05 · Dmitry Ilvokhin <hidden>
• COLD59d REVIEWED: 8 (8M) [PATCH v6 3/7] locking: Add contended_release tracepoint to sleepable locks
  2026-05-05 · Dmitry Ilvokhin <hidden>
• STALE147d [PATCH v5 7/7] locking: Add contended_release tracepoint to qrwlock
  2026-04-16 · Dmitry Ilvokhin <hidden>
• STALE147d [PATCH v5 5/7] locking: Add contended_release tracepoint to qspinlock
  2026-04-16 · Dmitry Ilvokhin <hidden>
• STALE147d REVIEWED: 1 (1M) [PATCH v5 2/7] locking/percpu-rwsem: Extract __percpu_up_read()
  2026-04-16 · Dmitry Ilvokhin <hidden>
• STALE147d REVIEWED: 8 (8M) [PATCH v5 3/7] locking: Add contended_release tracepoint to sleepable locks
  2026-04-16 · Dmitry Ilvokhin <hidden>
• STALE136d [RFC PATCH v3 5/7] kernel: introduce general hq-spinlock support
  2026-04-15 · Fedorov Nikita <hidden>
• STALE136d [RFC PATCH v3 3/7] hq-spinlock: add contention detection
  2026-04-15 · Fedorov Nikita <hidden>
• STALE136d [RFC PATCH v3 4/7] hq-spinlock: add hq-spinlock tunables and debug statistics
  2026-04-15 · Fedorov Nikita <hidden>
• STALE136d [RFC PATCH v3 1/7] kernel: add hq-spinlock types
  2026-04-15 · Fedorov Nikita <hidden>
• STALE136d [RFC PATCH v3 2/7] hq-spinlock: implement inner logic
  2026-04-15 · Fedorov Nikita <hidden>
• STALE163d REVIEWED: 1 (1M) [PATCH v4 2/5] locking/percpu-rwsem: Extract __percpu_up_read()
  2026-03-26 · Dmitry Ilvokhin <hidden>
• STALE163d [PATCH v4 3/5] locking: Add contended_release tracepoint to sleepable locks
  2026-03-26 · Dmitry Ilvokhin <hidden>
• STALE163d [PATCH v4 5/5] locking: Add contended_release tracepoint to spinning locks
  2026-03-26 · Dmitry Ilvokhin <hidden>
• STALE191d [PATCH v2 2/2] tree-wide: rename do_exit() to task_exit()
  2026-03-10 · Christian Brauner <brauner@kernel.org>
• STALE874d [PATCH next v2 5/5] locking/osq_lock: Optimise decode_cpu() and per_cpu_ptr().
  2023-12-31 · David Laight <hidden>
• STALE874d [PATCH next v2 4/5] locking/osq_lock: Avoid writing to node->next in the osq_lock() fast path.
  2023-12-31 · David Laight <hidden>
• STALE874d [PATCH next v2 3/5] locking/osq_lock: Use node->prev_cpu instead of saving node->prev.
  2023-12-31 · David Laight <hidden>
• STALE874d [PATCH next v2 2/5] locking/osq_lock: Optimise the vcpu_is_preempted() check.
  2023-12-31 · David Laight <hidden>
• STALE874d [PATCH next v2 1/5] locking/osq_lock: Defer clearing node->locked until the slow osq_lock() path.
  2023-12-31 · David Laight <hidden>
• STALE997d [PATCH next 2/5] locking/osq_lock: Avoid dirtying the local cpu's 'node' in the osq_lock() fast path.
  2023-12-29 · David Laight <hidden>
• STALE997d [PATCH next 5/5] locking/osq_lock: Optimise vcpu_is_preempted() check.
  2023-12-29 · David Laight <hidden>
• STALE997d [PATCH next 4/5] locking/osq_lock: Optimise per-cpu data accesses.
  2023-12-29 · David Laight <hidden>
• STALE997d LANDED [PATCH next 3/5] locking/osq_lock: Clarify osq_wait_next()
  2023-12-29 · David Laight <hidden>

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.

• STALE147d [PATCH v5 7/7] locking: Add contended_release tracepoint to qrwlock
  2026-04-16 · Dmitry Ilvokhin <hidden>
• DORMANTno replies [PATCH v3] locking/hqlock_core: restore missing call in contention detection logic
  2026-05-12 · Fedorov Nikita <hidden>