cpu frequency scaling framework · Maintained

Maintainers

• M "Rafael J. Wysocki" <rafael@kernel.org>
• M Viresh Kumar <viresh.kumar@linaro.org>

Paths

• F Documentation/admin-guide/pm/cpufreq.rst
• F Documentation/admin-guide/pm/intel_pstate.rst
• F Documentation/cpu-freq/
• F Documentation/devicetree/bindings/cpufreq/
• F drivers/cpufreq/
• F include/linux/cpufreq.h
• F include/linux/sched/cpufreq.h
• F kernel/sched/cpufreq*.c
• F rust/kernel/cpufreq.rs
• F tools/testing/selftests/cpufreq/

Last 30 days

Most active threads (last 7 days)

• HOTtoday [RFC PATCH] firmware: scmi: Make SCMI arch independent
  2026-07-09 13:28 · 0 replies in 7d · Michal Simek <michal.simek@amd.com>

Recent patches

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

• HOTtoday [RFC PATCH] firmware: scmi: Make SCMI arch independent
  2026-07-09 · Michal Simek <michal.simek@amd.com>
• WARM1d Re: [PATCH] sched/topology: Allow EAS without schedutil for artificial Energy Models
  2026-07-02 · Lucas Lima <hidden>
• WARM3d [RFC PATCH 5/6] cpufreq/amd-pstate: Reduce the scope of exported symbols
  2026-06-30 · K Prateek Nayak <kprateek.nayak@amd.com>
• WARM3d [RFC PATCH 6/6] cpufreq/amd-pstate-ut: Add unit test for "dynamic" EPP mode
  2026-06-30 · K Prateek Nayak <kprateek.nayak@amd.com>
• WARM3d [RFC PATCH 3/6] cpufreq/amd-pstate: Repurpose "amd_dynamic_epp" cmdline and corresponding sysfs
  2026-06-30 · K Prateek Nayak <kprateek.nayak@amd.com>
• WARM3d [RFC PATCH 2/6] cpufreq/amd-pstate: Add dynamic EPP as an "energy_performance_preference" mode
  2026-06-30 · K Prateek Nayak <kprateek.nayak@amd.com>
• WARM3d [RFC PATCH 1/6] cpufreq/amd-pstate: Extract platform profile to EPP conversion into a helper
  2026-06-30 · K Prateek Nayak <kprateek.nayak@amd.com>
• WARM1d [PATCH] sched/topology: Allow EAS without schedutil for artificial Energy Models
  2026-06-29 · Lucas de Lima Nóbrega <hidden>
• HOTtoday [PATCH v5 2/2] cpufreq: CPPC: add autonomous mode boot parameter support
  2026-06-23 · Sumit Gupta <sumitg@nvidia.com>
• HOTtoday [PATCH v5 1/2] cpufreq: CPPC: Set CPPC Enable register in cpu_init
  2026-06-23 · Sumit Gupta <sumitg@nvidia.com>
• WARM3d [PATCH] Documentation: admin-guide: pm: cpufreq: fix sampling_rate example command
  2026-06-21 · wangxiaodong <hidden>
• COLD31d [PATCH v2] cpufreq: Documentation: fix freq_step description
  2026-06-03 · Pengjie Zhang <hidden>
• COLD35d [PATCH] cpufreq: Documentation: fix freq_step description
  2026-05-29 · Pengjie Zhang <hidden>
• COLD31d [PATCH v3 4/4] cpufreq: Use policy->min/max init as QoS request
  2026-05-28 · Pierre Gondois <pierre.gondois@arm.com>
• COLD31d REVIEWED: 1 (1M) [PATCH v3 3/4] cpufreq: Remove driver default policy->min/max init
  2026-05-28 · Pierre Gondois <pierre.gondois@arm.com>
• COLD31d REVIEWED: 1 (1M) [PATCH v3 2/4] cpufreq: Set default policy->min/max values for all drivers
  2026-05-28 · Pierre Gondois <pierre.gondois@arm.com>
• COLD31d REVIEWED: 2 (1M) [PATCH v3 1/4] cpufreq: Extract cpufreq_policy_init_qos() function
  2026-05-28 · Pierre Gondois <pierre.gondois@arm.com>
• COLD17d [PATCH v4 2/2] cpufreq: CPPC: add autonomous mode boot parameter support
  2026-05-27 · Sumit Gupta <sumitg@nvidia.com>
• COLD17d [PATCH v4 1/2] cpufreq: CPPC: Set CPPC Enable register in cpu_init
  2026-05-27 · Sumit Gupta <sumitg@nvidia.com>
• COLD48d REVIEWED: 1 (0M) [PATCH v2] cpufreq: Documentation: fix sampling_down_factor range
  2026-05-18 · Pengjie Zhang <hidden>
• COLD52d [PATCH v3 2/2] cpufreq: CPPC: add autonomous mode boot parameter support
  2026-05-15 · Sumit Gupta <sumitg@nvidia.com>
• COLD52d [PATCH v3 1/2] cpufreq: CPPC: Set CPPC Enable register in cpu_init
  2026-05-15 · Sumit Gupta <sumitg@nvidia.com>
• COLD52d [PATCH] cpufreq: Documentation: fix sampling_down_factor documentation range
  2026-05-15 · Pengjie Zhang <hidden>
• COLD43d [PATCH v2 4/4] cpufreq: Use policy->min/max init as QoS request
  2026-05-11 · Pierre Gondois <pierre.gondois@arm.com>
• COLD43d [PATCH v2 3/4] cpufreq: Remove driver default policy->min/max init
  2026-05-11 · Pierre Gondois <pierre.gondois@arm.com>
• COLD43d [PATCH v2 2/4] cpufreq: Set default policy->min/max values for all drivers
  2026-05-11 · Pierre Gondois <pierre.gondois@arm.com>
• COLD43d [PATCH v2 1/4] cpufreq: Extract cpufreq_policy_init_qos() function
  2026-05-11 · Pierre Gondois <pierre.gondois@arm.com>
• COLD53d [PATCH v2] cpufreq-stats: document limitations on modern cpufreq drivers
  2026-05-10 · NicoErdmann <hidden>
• COLD53d [PATCH] cpufreq-stats: document limitations on modern cpufreq drivers
  2026-05-10 · NicoErdmann <hidden>
• COLD48d [PATCH v2] cpufreq: elanfreq: Drop support for AMD Elan SC4*
  2026-05-07 · Sean Young <sean@mess.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.

• COLD48d REVIEWED: 1 (0M) [PATCH v2] cpufreq: Documentation: fix sampling_down_factor range
  2026-05-18 · Pengjie Zhang <hidden> · 1 Reviewed-by
• COLD31d REVIEWED: 2 (1M) [PATCH v3 1/4] cpufreq: Extract cpufreq_policy_init_qos() function
  2026-05-28 · Pierre Gondois <pierre.gondois@arm.com> · 2 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.

• STALE163d [PATCH v6 9/9] cpufreq: CPPC: Update cached perf_ctrls on sysfs write
  2026-01-20 · Sumit Gupta <sumitg@nvidia.com>
• STALE154d [PATCH v7 1/7] ACPI: CPPC: Add cppc_get_perf() API to read performance controls
  2026-01-29 · Sumit Gupta <sumitg@nvidia.com>
• STALE154d [PATCH v7 5/7] ACPI: CPPC: add APIs and sysfs interface for perf_limited
  2026-01-29 · Sumit Gupta <sumitg@nvidia.com>
• STALE154d [PATCH v7 7/7] cpufreq: CPPC: Update cached perf_ctrls on sysfs write
  2026-01-29 · Sumit Gupta <sumitg@nvidia.com>
• COLD52d [PATCH v3 1/2] cpufreq: CPPC: Set CPPC Enable register in cpu_init
  2026-05-15 · Sumit Gupta <sumitg@nvidia.com>
• COLD17d [PATCH v4 1/2] cpufreq: CPPC: Set CPPC Enable register in cpu_init
  2026-05-27 · Sumit Gupta <sumitg@nvidia.com>
• COLD17d [PATCH v4 2/2] cpufreq: CPPC: add autonomous mode boot parameter support
  2026-05-27 · Sumit Gupta <sumitg@nvidia.com>
• COLD31d [PATCH v3 4/4] cpufreq: Use policy->min/max init as QoS request
  2026-05-28 · Pierre Gondois <pierre.gondois@arm.com>