workqueue · Maintained

Maintainers

• M Tejun Heo <tj@kernel.org>
• R Lai Jiangshan <jiangshanlai@gmail.com>

Paths

• F Documentation/core-api/workqueue.rst
• F include/linux/workqueue.h
• F kernel/workqueue.c
• F kernel/workqueue_internal.h

Last 30 days

Most active threads (last 7 days)

• WARM1d [PATCH 0/6] workqueue: base pwq pool release and nr_active on the backing pool
  2026-07-31 11:58 · 6 replies in 7d · Breno Leitao <leitao@debian.org>

Active reviewers (last 30 days)

• Tejun Heo <tj@kernel.org>
  2 attestations (2 Suggested-by) · last on 2026-07-09

Recent patches

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

• DORMANTno replies [PATCH 6/6] workqueue: install per-cpu pwqs at creation for __WQ_PERCPU_POOLS
  2026-07-31 · Breno Leitao <leitao@debian.org>
• WARM1d [PATCH 5/6] workqueue: add a per-cpu backend for unbound pwqs
  2026-07-31 · Breno Leitao <leitao@debian.org>
• WARM1d [PATCH 4/6] workqueue: account nr_active by the backing pool
  2026-07-31 · Breno Leitao <leitao@debian.org>
• WARM1d [PATCH 3/6] workqueue: release pwq pools by pool type
  2026-07-31 · Breno Leitao <leitao@debian.org>
• WARM1d [PATCH 2/6] workqueue: factor out alloc_and_link_percpu_pwqs()
  2026-07-31 · Breno Leitao <leitao@debian.org>
• WARM1d [PATCH 1/6] workqueue: factor out get_percpu_pool()
  2026-07-31 · Breno Leitao <leitao@debian.org>
• DORMANTno replies Re: Linux 6.12.97
  2026-07-24 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• COOLING8d Re: Linux 6.6.145
  2026-07-24 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.1.178
  2026-07-24 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 5.10.261
  2026-07-24 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 5.15.212
  2026-07-24 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• COOLING10d [RFC v3 1/2] workqueue: Add support for real-time workers
  2026-07-17 · Tvrtko Ursulin <hidden>
• COLD15d [RFC v2 1/2] workqueue: Add support for real-time workers
  2026-07-17 · Tvrtko Ursulin <hidden>
• COLD15d [PATCH] workqueue: Use raise_softirq() to trigger softirq in irq_work handler
  2026-07-16 · Zqiang <qiang.zhang@linux.dev>
• WARM3d [PATCH RFC 2/3] workqueue: allocate percpu pwqs through alloc_pwq()
  2026-07-14 · Breno Leitao <leitao@debian.org>
• WARM3d [PATCH RFC 3/3] workqueue: factor out alloc_and_link_percpu_pwqs()
  2026-07-14 · Breno Leitao <leitao@debian.org>
• WARM3d [PATCH RFC 1/3] workqueue: introduce alloc_pwq()
  2026-07-14 · Breno Leitao <leitao@debian.org>
• COLD18d [RFC 1/2] workqueue: Add support for real-time workers
  2026-07-13 · Tvrtko Ursulin <hidden>
• COLD22d [PATCH] docs: workqueue: Fix bracket
  2026-07-09 · Manuel Ebner <hidden>
• COLD22d [PATCH RFC 2/2] docs: workqueue: Update WQ_PERCPU documentation
  2026-07-09 · Marco Crivellari <hidden>
• COLD22d [PATCH RFC 1/2] workqueue: Make unbound the default alloc_workqueue() behavior
  2026-07-09 · Marco Crivellari <hidden>
• COLD26d [PATCH 1/3] NFS/localio: issue IO inline when not in a memory-reclaim context
  2026-07-06 · Mike Snitzer <hidden>
• COLD19d [PATCH v19 07/40] dept: distinguish each work from another
  2026-07-06 · Byungchul Park <byungchul@sk.com>
• COLD25d [PATCH] workqueue: annotate racy sum_exec_runtime reads for CPU-intensive detection
  2026-07-03 · Breno Leitao <leitao@debian.org>
• COLD29d [PATCH] workqueue: annotate racy PWQ_STAT_CPU_TIME update in wq_worker_tick()
  2026-07-02 · Breno Leitao <leitao@debian.org>
• COLD31d REVIEWED: 4 (4M) [PATCH v2] workqueue: dump the last woken worker for stalled pools
  2026-07-01 · Breno Leitao <leitao@debian.org>
• COLD32d REVIEWED: 4 (4M) [PATCH v2 3/3] workqueue: dump the last woken worker for stalled pools
  2026-06-30 · Breno Leitao <leitao@debian.org>
• COLD32d REVIEWED: 4 (4M) [PATCH v2 2/3] workqueue: trigger a single-CPU backtrace for stalled pools
  2026-06-30 · Breno Leitao <leitao@debian.org>
• COLD32d REVIEWED: 4 (4M) [PATCH v2 1/3] workqueue: only show running workers in stall diagnostics
  2026-06-30 · Breno Leitao <leitao@debian.org>
• COLD32d REVIEWED: 1 (0M) [PATCH v5 3/3] workqueue: defer the worker wakeup outside pool->lock in process_one_work()
  2026-06-26 · Breno Leitao <leitao@debian.org>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• COLD32d REVIEWED: 1 (0M) [PATCH v5 3/3] workqueue: defer the worker wakeup outside pool->lock in process_one_work()
  2026-06-26 · Breno Leitao <leitao@debian.org> · 1 Tested-by
• COLD32d REVIEWED: 4 (4M) [PATCH v2 1/3] workqueue: only show running workers in stall diagnostics
  2026-06-30 · Breno Leitao <leitao@debian.org> · 1 Reviewed-by
• COLD32d REVIEWED: 4 (4M) [PATCH v2 2/3] workqueue: trigger a single-CPU backtrace for stalled pools
  2026-06-30 · Breno Leitao <leitao@debian.org> · 1 Reviewed-by
• COLD32d REVIEWED: 4 (4M) [PATCH v2 3/3] workqueue: dump the last woken worker for stalled pools
  2026-06-30 · Breno Leitao <leitao@debian.org> · 1 Reviewed-by
• COLD31d REVIEWED: 4 (4M) [PATCH v2] workqueue: dump the last woken worker for stalled pools
  2026-07-01 · Breno Leitao <leitao@debian.org> · 1 Reviewed-by

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.

• STALE173d [PATCH 1/2] workqueue: add time-based panic for stalls
  2026-02-06 · Breno Leitao <leitao@debian.org>
• STALE173d [PATCH 2/2] workqueue: replace BUG_ON with panic in panic_on_wq_watchdog
  2026-02-06 · Breno Leitao <leitao@debian.org>
• STALE150d [PATCH 1/4] workqueue: Use POOL_BH instead of WQ_BH when checking pool flags
  2026-02-11 · Breno Leitao <leitao@debian.org>
• STALE150d [PATCH 2/4] workqueue: Rename pool->watchdog_ts to pool->last_progress_ts
  2026-02-11 · Breno Leitao <leitao@debian.org>
• STALE150d [PATCH 3/4] workqueue: Show in-flight work item duration in stall diagnostics
  2026-02-11 · Breno Leitao <leitao@debian.org>
• STALE150d [PATCH 4/4] workqueue: Detect stalled in-flight work items with empty worklist
  2026-02-11 · Breno Leitao <leitao@debian.org>
• DORMANTno replies Re: Linux 6.18.14
  2026-02-26 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE154d Re: Linux 6.19.4
  2026-02-26 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE148d [PATCH RFC DRAFT POC 02/11] kthread: remove unused flags argument from kthread worker creation API
  2026-03-03 · Christian Brauner <brauner@kernel.org>
• DORMANTno replies Re: Linux 6.6.128
  2026-03-04 · Sasha Levin <sashal@kernel.org>