freezer · Supported

Maintainers

• M "Rafael J. Wysocki" <rafael@kernel.org>
• R Pavel Machek <pavel@kernel.org>

Paths

• F Documentation/power/freezing-of-tasks.rst
• F include/linux/freezer.h
• F kernel/freezer.c

Last 30 days

Most active threads (last 7 days)

• COOLING5d [PATCH v3 00/15] sched: introduce for_each_process_rculock and for_each_thread_rculock
  2026-09-11 07:59 · 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-pm (capped at 30), ordered by date desc.

• COOLING5d REVIEWED: 16 (16M) [PATCH v3 06/15] freezer: convert thread iterator to for_each_thread_rculock
  2026-09-11 · Ye Liu <hidden>
• COOLING6d REVIEWED: 4 (4M) [PATCH v2 5/8] kernel: convert process/thread iterators to for_each_*_rculock
  2026-09-07 · Ye Liu <hidden>
• COOLING5d [PATCH 5/8] kernel: convert process/thread iterators to for_each_*_rcu
  2026-09-04 · Ye Liu <hidden>
• COLD41d [RFC PATCH] freezer: Restrict unsafe freezable tasks to system sleep
  2026-07-14 · Stanislav Kinsburskii <hidden>
• STALE319d [PATCH PM/for-6.19] freezer: Clarify that only cgroup1 freezer uses PM freezer
  2025-10-20 · Tejun Heo <tj@kernel.org>
• STALE365d REVIEWED: 17 (17M) [PATCH v10 1/2] mm/oom_kill: Thaw the entire OOM victim process
  2025-09-15 · zhongjinji <hidden>
• STALE366d REVIEWED: 4 (4M) [PATCH v9 1/2] mm/oom_kill: Thaw the entire OOM victim process
  2025-09-10 · zhongjinji <hidden>
• STALE372d [PATCH v8 1/3] mm/oom_kill: Introduce thaw_oom_process() for thawing OOM victims
  2025-09-09 · zhongjinji <hidden>
• STALE397d [RFC PATCH v1 2/9] freezer: Introduce API to set per-task freeze priority
  2025-08-07 · Zihuan Zhang <hidden>
• STALE397d [RFC PATCH v1 1/9] freezer: Introduce freeze_priority field in task_struct
  2025-08-07 · Zihuan Zhang <hidden>
• STALE412d [PATCH 6.6 5/5] sched,freezer: Remove unnecessary warning in __thaw_task
  2025-07-28 · Chen Ridong <hidden>
• STALE412d [PATCH 6.6 4/5] freezer,sched: Clean saved_state when restoring it during thaw
  2025-07-28 · Chen Ridong <hidden>
• STALE412d REVIEWED: 1 (0M) [PATCH 6.6 3/5] freezer,sched: Do not restore saved_state of a thawed task
  2025-07-28 · Chen Ridong <hidden>
• STALE412d [PATCH 6.6 2/5] freezer,sched: Use saved_state to reduce some spurious wakeups
  2025-07-28 · Chen Ridong <hidden>
• STALE425d [PATCH v2 -next 1/2] sched,freezer: Remove unnecessary warning in __thaw_task
  2025-07-17 · Chen Ridong <hidden>
• STALE427d Re: [PATCH v3 1/1] PM / Freezer: Skip zombie/dead processes to
  2025-07-07 · Peter Zijlstra <peterz@infradead.org>
• STALE432d Re: [PATCH next] sched,freezer: prevent tasks from escaping being frozen
  2025-07-04 · Chen Ridong <hidden>
• STALE432d [PATCH next] sched,freezer: prevent tasks from escaping being frozen
  2025-07-03 · Chen Ridong <hidden>
• DORMANTno replies [PATCH v1] freezer: Skip zombie processes early to reduce lock contention
  2025-05-15 · Zihuan Zhang <hidden>
• DORMANTno replies [RFC PATCH] freezer,sched: Preventing kthreads with D-state from being woken up during freeze
  2024-06-17 · Xuewen Yan <hidden>
• STALE1001d [PATCH] docs: power: Adjust freezing-of-tasks.rst due to the freezer logic changes
  2023-12-12 · Kevin Hao <hidden>
• STALE1013d [PATCH] freezer,sched: Move state information judgment outside task_call_func
  2023-12-07 · Xiaolei Wang <hidden>
• STALE1022d LANDED [PATCH 2/2] freezer,sched: clean saved_state when restoring it during thaw
  2023-11-20 · Elliot Berman <hidden>
• STALE1022d LANDED: 1 (0M) [PATCH 1/2] freezer,sched: do not restore saved_state of a thawed task
  2023-11-20 · Elliot Berman <hidden>
• STALE1079d [PATCH v4 2/2] freezer,sched: Use saved_state to reduce some spurious wakeups
  2023-09-08 · Elliot Berman <hidden>
• DORMANTno replies [PATCH v3] freezer,sched: Use saved_state to reduce some spurious wakeups
  2023-09-08 · Elliot Berman <hidden>
• STALE1103d [PATCH v2] freezer,sched: Use saved_state to reduce some spurious wakeups
  2023-08-30 · Elliot Berman <hidden>
• STALE1113d [PATCH] freezer,sched: Use saved_state to reduce some spurious wakeups
  2023-08-28 · Elliot Berman <hidden>
• STALE1268d [PATCH 1/2] kernel/freezer: Add routine to read task's freezing reason
  2023-02-27 · Michal Dubiel <hidden>
• STALE1268d [PATCH 2/2] kernel/freezer: Don't warn when thawing freezing cgroup processes
  2023-02-27 · Michal Dubiel <hidden>