device frequency (devfreq) · Maintained

Maintainers

• M MyungJoo Ham <myungjoo.ham@samsung.com>
• M Kyungmin Park <kyungmin.park@samsung.com>
• M Chanwoo Choi <cw00.choi@samsung.com>

Paths

• F Documentation/devicetree/bindings/devfreq/
• F Documentation/devicetree/bindings/interconnect/mediatek,cci.yaml
• F drivers/devfreq/
• F include/linux/devfreq.h
• F include/trace/events/devfreq.h

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH] dt-bindings: devfreq: samsung,exynos-ppmu: Use standard regex syntax
  2026-08-13 17:40 · 0 replies in 7d · "Rob Herring (Arm)" <robh@kernel.org>
• HOTtoday [PATCH 1/2] dt-bindings: devfreq: Document support for Airoha Subsystem devfreq
  2026-08-10 14:32 · 1 reply in 7d · Christian Marangi <ansuelsmth@gmail.com>

Active reviewers (last 30 days)

• Pragnesh Papaniya <hidden>
  3 attestations (3 Co-developed-by) · last on 2026-07-24
• Yaxiong Tian <hidden>
  2 attestations (2 Reviewed-by) · last on 2026-07-29
• Geert Uytterhoeven <geert+renesas@glider.be>
  1 attestation (1 Suggested-by) · last on 2026-08-07
• Amir Vajid <hidden>
  1 attestation (1 Co-developed-by) · last on 2026-07-24
• Ramakrishna Gottimukkula <hidden>
  1 attestation (1 Co-developed-by) · last on 2026-07-24

Recent patches

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

• HOTtoday [PATCH] dt-bindings: devfreq: samsung,exynos-ppmu: Use standard regex syntax
  2026-08-13 · "Rob Herring (Arm)" <robh@kernel.org>
• HOTtoday [PATCH 2/2] PM / devfreq: add Airoha SoC devfreq driver
  2026-08-10 · Christian Marangi <ansuelsmth@gmail.com>
• HOTtoday [PATCH 1/2] dt-bindings: devfreq: Document support for Airoha Subsystem devfreq
  2026-08-10 · Christian Marangi <ansuelsmth@gmail.com>
• COOLING9d [PATCH] PM / devfreq: Convert to seq_buf
  2026-08-07 · Biju <hidden>
• COLD18d [PATCH v2] PM / devfreq: userspace: Fix memory leak in userspace_init()
  2026-07-29 · Malaya Kumar Rout <hidden>
• COOLING13d [PATCH v4 4/4] devfreq: Refcount governor modules while in use
  2026-07-29 · Jie Zhan <zhanjie9@hisilicon.com>
• COOLING13d REVIEWED: 1 (0M) [PATCH v4 1/4] devfreq: Use mutex guard in governor_store()
  2026-07-29 · Jie Zhan <zhanjie9@hisilicon.com>
• COOLING13d REVIEWED: 1 (0M) [PATCH v4 2/4] devfreq: Use mutex guard in devfreq_add/remove_governor()
  2026-07-29 · Jie Zhan <zhanjie9@hisilicon.com>
• COOLING13d [PATCH v4 3/4] devfreq: Factor out devfreq_set_governor()
  2026-07-29 · Jie Zhan <zhanjie9@hisilicon.com>
• COOLING4d [PATCH RFC 07/10] PM / devfreq: Introduce the QCOM SCMI Memlat devfreq driver
  2026-07-24 · Pragnesh Papaniya <hidden>
• COOLING4d [PATCH RFC 06/10] PM / devfreq: Add a governor for tracking remote device frequencies
  2026-07-24 · Pragnesh Papaniya <hidden>
• COOLING4d [PATCH RFC 05/10] PM / devfreq: Add new track_remote flag for governors
  2026-07-24 · Pragnesh Papaniya <hidden>
• COOLING4d [PATCH RFC 04/10] PM / devfreq: Add new target_freq attribute flag for governors
  2026-07-24 · Pragnesh Papaniya <hidden>
• COLD20d [PATCH v1] PM / devfreq: governor_userspace: Guard against NULL governor_data during switch
  2026-07-23 · Finley Xiao <hidden>
• COOLING13d [PATCH] devfreq: stop monitor before calling governor GOV_STOP
  2026-07-21 · Mukesh Ojha <hidden>
• DORMANTno replies [PATCH] PM / devfreq: tegra30: Remove redundant dev_err()
  2026-07-13 · Pan Chuang <hidden>
• COLD18d [PATCH] PM / devfreq: userspace: Fix memory leak in userspace_init()
  2026-07-04 · Malaya Kumar Rout <hidden>
• COLD40d [PATCH v2 05/11] devfreq: Use sysfs_emit() for cpumask show callbacks
  2026-07-02 · Yury Norov <hidden>
• COLD42d [PATCH 4/6] devfreq: hisi_uncore: Preserve PCC shared memory signature
  2026-06-27 · Sudeep Holla <sudeep.holla@kernel.org>
• COLD31d [PATCH RFC v7 7/9] PM / devfreq: Introduce the QCOM SCMI Memlat devfreq driver
  2026-06-10 · Pragnesh Papaniya <hidden>
• COLD31d [PATCH RFC v7 6/9] PM / devfreq: Add a governor for tracking remote device frequencies
  2026-06-10 · Pragnesh Papaniya <hidden>
• COLD31d [PATCH RFC v7 5/9] PM / devfreq: Add new track_remote flag for governors
  2026-06-10 · Pragnesh Papaniya <hidden>
• COLD31d [PATCH RFC v7 4/9] PM / devfreq: Add new target_freq attribute flag for governors
  2026-06-10 · Pragnesh Papaniya <hidden>
• COLD50d [PATCH 07/16] devfreq: Use sysfs_emit() for cpumask show callbacks
  2026-05-28 · Yury Norov <hidden>
• COLD20d REVIEWED: 1 (0M) [PATCH v3 2/4] devfreq: Use mutex guard in devfreq_add/remove_governor()
  2026-05-19 · Jie Zhan <zhanjie9@hisilicon.com>
• COLD20d REVIEWED: 1 (0M) [PATCH v3 1/4] devfreq: Use mutex guard in governor_store()
  2026-05-19 · Jie Zhan <zhanjie9@hisilicon.com>
• COLD20d [PATCH v3 3/4] devfreq: Factor out devfreq_set_governor()
  2026-05-19 · Jie Zhan <zhanjie9@hisilicon.com>
• COLD20d [PATCH v3 4/4] devfreq: Refcount governor modules while in use
  2026-05-19 · Jie Zhan <zhanjie9@hisilicon.com>
• DORMANTno replies [PATCH v3 04/11] devfreq: Use trace_call__##name() at guarded tracepoint call sites
  2026-05-15 · Vineeth Pillai (Google) <hidden>
• STALE91d [PATCH v2 2/6] devfreq: Use mutex guard in devfreq_add/remove_governor()
  2026-05-13 · Jie Zhan <zhanjie9@hisilicon.com>

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.

• COOLING13d REVIEWED: 1 (0M) [PATCH v4 2/4] devfreq: Use mutex guard in devfreq_add/remove_governor()
  2026-07-29 · Jie Zhan <zhanjie9@hisilicon.com> · 1 Reviewed-by
• COOLING13d REVIEWED: 1 (0M) [PATCH v4 1/4] devfreq: Use mutex guard in governor_store()
  2026-07-29 · Jie Zhan <zhanjie9@hisilicon.com> · 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.

• STALE161d [PATCH 1/4] PM / devfreq: Fix possible null pointer issue in devfreq_add_governor()
  2026-03-09 · Yaxiong Tian <hidden>
• STALE161d [PATCH 2/4] PM / devfreq: Fix available_governors_show() when no governor is set
  2026-03-09 · Yaxiong Tian <hidden>
• STALE161d [PATCH 3/4] PM / devfreq: Fix governor_store() failing when device has no current governor
  2026-03-09 · Yaxiong Tian <hidden>
• DORMANTno replies [PATCH 4/4] PM / devfreq: Optimize error return value of governor_show()
  2026-03-09 · Yaxiong Tian <hidden>
• STALE144d [PATCH v1 10/10] devfreq: Allow setting governor when device governor is NULL
  2026-03-26 · Jie Zhan <zhanjie9@hisilicon.com>
• STALE144d [PATCH v1 03/10] devfreq: Add a dedicated mutex for the governor list
  2026-03-26 · Jie Zhan <zhanjie9@hisilicon.com>
• STALE144d [PATCH v1 09/10] devfreq: Allow showing available_governors when device governor is NULL
  2026-03-26 · Jie Zhan <zhanjie9@hisilicon.com>
• STALE144d [PATCH v1 05/10] devfreq: Remove dead code in devfreq_add_governor()
  2026-03-26 · Jie Zhan <zhanjie9@hisilicon.com>
• STALE144d [PATCH v1 04/10] devfreq: Factor out devfreq_set_governor[_locked]()
  2026-03-26 · Jie Zhan <zhanjie9@hisilicon.com>
• STALE144d [PATCH v1 01/10] devfreq: Use mutex guard in governor_store()
  2026-03-26 · Jie Zhan <zhanjie9@hisilicon.com>