suspend to ram · Supported

Maintainers

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

Paths

• F Documentation/power/
• F arch/x86/kernel/acpi/sleep*
• F arch/x86/kernel/acpi/wakeup*
• F drivers/base/power/
• F include/linux/freezer.h
• F include/linux/pm.h
• F include/linux/suspend.h
• F kernel/power/

Last 30 days

Most active threads (last 7 days)

• WARM3d [PATCH 0/2] PM: hibernate: add helper to detect image-write phase
  2026-07-29 07:12 · 3 replies in 7d · Haowen Tu <hidden>
• COOLING4d [PATCH v2 0/6] cpuidle: speed up do_idle() by caching the governor latency QoS constraint
  2026-07-29 06:18 · 1 reply in 7d · Yaxiong Tian <hidden>

Active reviewers (last 30 days)

• Rafael J. Wysocki (Intel) <rafael@kernel.org>
  2 attestations (2 Acked-by) · last on 2026-07-29
• Sean Rhodes <hidden>
  1 attestation (1 Co-developed-by) · last on 2026-07-13

Recent patches

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

• WARM3d [PATCH v4 3/4] PM: hibernate: notify on image write failure
  2026-07-29 · Haowen Tu <hidden>
• WARM3d REVIEWED: 18 (18M) [PATCH v4 2/4] PM: hibernate: add pm_hibernation_snapshot_done() helper
  2026-07-29 · Haowen Tu <hidden>
• WARM3d REVIEWED: 18 (18M) [PATCH v4 1/4] PM: hibernate: clear in_suspend before freeing the snapshot
  2026-07-29 · Haowen Tu <hidden>
• COOLING4d [PATCH v2 1/6] pm: qos: add notifiers for CPU latency and wakeup latency QoS
  2026-07-29 · Yaxiong Tian <hidden>
• DORMANTno replies [PATCH] doc: power: update swsusp.txt references to swsusp.rst
  2026-07-24 · Li Jun <hidden>
• COOLING10d [PATCH v2 3/3] PM: hibernate: log the task that initiated the power down
  2026-07-21 · Bradley Morgan <hidden>
• COOLING6d [PATCH v2 1/3] umh, treewide: Explicitly include linux/umh.h where needed
  2026-07-21 · Petr Pavlu <petr.pavlu@suse.com>
• COOLING10d [PATCH 1/5] pm: qos: add notifiers for CPU latency and wakeup latency QoS
  2026-07-21 · Yaxiong Tian <hidden>
• COOLING10d [PATCH RESEND v6 2/2] PM: dpm_watchdog: Allow disabling DPM watchdog by default
  2026-07-20 · Tzung-Bi Shih <tzungbi@kernel.org>
• COOLING10d [PATCH RESEND v6 1/2] PM: sleep: Rename module parameters prefix to "pm"
  2026-07-20 · Tzung-Bi Shih <tzungbi@kernel.org>
• DORMANTno replies [PATCH] power: fix whitespace and type inconsistencies in poweroff.c and user.c
  2026-07-18 · Muhammed Çevik <hidden>
• DORMANTno replies [PATCH] power: fix whitespace and type inconsistencies in poweroff.c and user.c
  2026-07-18 · Muhammed Çevik <hidden>
• DORMANTno replies [PATCH] power: fix whitespace and type inconsistencies in poweroff.c and user.c
  2026-07-18 · Muhammed Çevik <hidden>
• COOLING10d [PATCH v2] PM: hibernate: Print speed statistics of copy_data_pages()
  2026-07-15 · Nícolas F. R. A. Prado <hidden>
• DORMANTno replies [RFC PATCH] freezer: Restrict unsafe freezable tasks to system sleep
  2026-07-14 · Stanislav Kinsburskii <hidden>
• COOLING10d [PATCH] PM: hibernate: swap: defer linking the next map page
  2026-07-14 · Haesung Kim <hidden>
• DORMANTno replies [RFC PATCH 3/3] PM: hibernate: document encrypted snapshot seed ABI
  2026-07-13 · Sean Rhodes <hidden>
• COLD20d [RFC PATCH 2/3] PM: hibernate: permit encrypted snapshot device under lockdown
  2026-07-13 · Sean Rhodes <hidden>
• COLD20d [RFC PATCH 1/3] PM: hibernate: add seed-wrapped encrypted snapshots
  2026-07-13 · Sean Rhodes <hidden>
• COOLING10d [PATCH] PM: hibernate: Fix memory leak in snapshot_write_next() error path
  2026-07-11 · Malaya Kumar Rout <hidden>
• COLD23d [PATCH v4 1/2] PM: runtime: Only set runtime_error on suspend callback failures
  2026-07-10 · Praveen Talari <hidden>
• COOLING5d [RFC PATCH 2/2] PM: EM: Validate new_table in em_dev_update_perf_domain()
  2026-07-10 · Xuewen Yan <hidden>
• COOLING5d [RFC PATCH 1/2] PM: EM: Export em_table_alloc/free
  2026-07-10 · Xuewen Yan <hidden>
• COLD23d [PATCH] PM: hibernate: Allow hibernation opt-in when locked down
  2026-07-09 · Sean Rhodes <hidden>
• COOLING12d [RFC PATCH] firmware: scmi: Make SCMI arch independent
  2026-07-09 · Michal Simek <michal.simek@amd.com>
• COLD23d [PATCH 1/2] umh, treewide: Explicitly include linux/umh.h where needed
  2026-07-08 · Petr Pavlu <petr.pavlu@suse.com>
• COLD19d [PATCH v6 2/2] PM: dpm_watchdog: Allow disabling DPM watchdog by default
  2026-07-08 · Tzung-Bi Shih <tzungbi@kernel.org>
• COLD19d [PATCH v6 1/2] PM: sleep: Rename module parameters prefix to "pm"
  2026-07-08 · Tzung-Bi Shih <tzungbi@kernel.org>
• COLD23d [PATCH v3 1/2] PM: runtime: Only set runtime_error on suspend callback failures
  2026-07-06 · Praveen Talari <hidden>
• DORMANTno replies Re: [PATCH v2 1/2] PM: runtime: Only set runtime_error on suspend callback failures
  2026-07-04 · Praveen Talari <hidden>

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.

• STALE68d REVIEWED: 1 (0M) [PATCH] PM: hibernate: make LZ4 available for hibernation compression
  2026-05-20 · l1rox3 <hidden> · 1 Tested-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.

• DORMANTno replies [PATCH v1 RESEND] PM: sleep: Add configurable timeout and mode control for filesystem sync
  2026-01-16 · tuhaowen <hidden>
• DORMANTno replies [PATCH] PM: sleep: Fix race condition in suspend statistics updates
  2026-01-16 · tuhaowen <hidden>
• STALE159d [PATCH v3 06/20] mm: swap: add a separate type for physical swap slots
  2026-02-08 · Nhat Pham <nphamcs@gmail.com>
• DORMANTno replies FAILED: Patch "PM: sleep: core: Avoid bit field races related to work_in_progress" failed to apply to 6.18-stable tree
  2026-03-01 · Sasha Levin <sashal@kernel.org>
• STALE150d [RFC PATCH 2/2] kernel/power: hold swap device reference across hibernation swap operation
  2026-03-02 · Youngjun Park <youngjun.park@lge.com>
• STALE135d [PATCH v4 3/3] PM: hibernate: fix spurious GFP mask WARNING in uswsusp path
  2026-03-17 · Youngjun Park <youngjun.park@lge.com>
• STALE136d [PATCH v4 06/21] mm: swap: add a separate type for physical swap slots
  2026-03-18 · Nhat Pham <nphamcs@gmail.com>
• STALE135d [PATCH v5 1/3] mm/swap, PM: hibernate: fix swapoff race in uswsusp by getting swap reference
  2026-03-19 · Youngjun Park <youngjun.park@lge.com>
• STALE133d [PATCH v6 1/3] mm/swap, PM: hibernate: fix swapoff race in uswsusp by pinning swap device
  2026-03-20 · Youngjun Park <youngjun.park@lge.com>
• STALE93d [PATCH v5 06/21] mm: swap: add a separate type for physical swap slots
  2026-03-20 · Nhat Pham <nphamcs@gmail.com>