kernel/linux.git/Documentation/admin-guide/pm, branch v7.0.11

Documentation: intel_pstate: Fix description of asymmetric packing with SMT

2026-06-01T15:54:42+00:00

[ Upstream commit ee047fc7a2da90554410128195058c409a391d43 ] Patchset [1], including commits 046a5a95c3b0 ("x86/sched/itmt: Give all SMT siblings of a core the same priority") 995998ebdebd ("x86/sched: Remove SD_ASYM_PACKING from the SMT domain flags") overhauled asym_packing handling in the scheduler on x86 hybrid processors with SMT. It removed SD_ASYM_PACKING from the x86 SMT scheduling domain and made all SMT siblings of a core share the same priority. As a result, asym_packing operates only across physical cores, spreading tasks among them and only using idle SMT siblings once all physical cores are busy. Fix the documentation to reflect this behavior. Fixes: f20af84c29b2 ("cpufreq: intel_pstate: Document hybrid processor support") Link: https://lore.kernel.org/r/20230406203148.19182-1-ricardo.neri-calderon@linux.intel.com [1] Signed-off-by: Ricardo Neri [ rjw: Changelog edits ] Link: https://patch.msgid.link/20260424-rneri-fix-intel-pstate-doc-smt-asym-packing-v1-1-317bf7d5c362@linux.intel.com Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin

Documentation: PM: Document intel_idle.table command line option

2026-02-11T20:08:23+00:00

Add the 'intel_idle.table' command line option description to the intel_idle document in admin-guide. Signed-off-by: Artem Bityutskiy [ rjw: Subject adjustment, changelog edits] Link: https://patch.msgid.link/20260205125354.632891-1-artem.bityutskiy@linux.intel.com Signed-off-by: Rafael J. Wysocki

cpufreq: Documentation: Update description of rate_limit_us default value

2026-02-03T21:18:39+00:00

Due to commit 37c6dccd6837 ("cpufreq: Remove LATENCY_MULTIPLIER") updating the acquisition logic of cpufreq_policy_transition_delay_us(), the original description of 2 ms has become inaccurate. Therefore, update the description of the default value for rate_limit_us from 2ms to 1ms. Signed-off-by: Yaxiong Tian [ rjw: Subject and changelog edits ] Link: https://patch.msgid.link/20260203093501.1138721-1-tianyaxiong@kylinos.cn Signed-off-by: Rafael J. Wysocki

Merge branches 'pm-qos' and 'pm-tools'

2025-11-28T15:50:45+00:00

Merge PM QoS updates and a cpupower utility update for 6.19-rc1: - Introduce and document a QoS limit on CPU exit latency during wakeup from suspend-to-idle (Ulf Hansson) - Add support for building libcpupower statically (Zuo An) * pm-qos: Documentation: power/cpuidle: Document the CPU system wakeup latency QoS cpuidle: Respect the CPU system wakeup QoS limit for cpuidle sched: idle: Respect the CPU system wakeup QoS limit for s2idle pmdomain: Respect the CPU system wakeup QoS limit for cpuidle pmdomain: Respect the CPU system wakeup QoS limit for s2idle PM: QoS: Introduce a CPU system wakeup QoS limit * pm-tools: tools/power/cpupower: Support building libcpupower statically

Documentation: power/cpuidle: Document the CPU system wakeup latency QoS

2025-11-25T18:01:30+00:00

Let's document how the new CPU system wakeup latency QoS limit can be used from user space, along with how the constraint is taken into account for s2idle and cpuidle. Reviewed-by: Dhruva Gole Reviewed-by: Kevin Hilman (TI) Tested-by: Kevin Hilman (TI) Signed-off-by: Ulf Hansson Link: https://patch.msgid.link/20251125112650.329269-7-ulf.hansson@linaro.org Signed-off-by: Rafael J. Wysocki

Documentation: intel-pstate: Use :ref: directive for internal linking

2025-11-03T18:20:53+00:00

intel_pstate docs uses standard reST construct (`Section title`_) for cross-referencing sections (internal linking), rather than for external links. Incorrect cross-references are not caught when these are written in that syntax, however (fortunately docutils 0.22 raise duplicate target warnings that get fixed in cb908f8b0acc7e ("Documentation: intel_pstate: fix duplicate hyperlink target errors")). Convert the cross-references to use :ref: directive, which doesn't exhibit this problem. Signed-off-by: Bagas Sanjaya Reviewed-by: Randy Dunlap Tested-by: Randy Dunlap [ rjw: Changelog tweak ] Link: https://patch.msgid.link/20251101055614.32270-1-bagasdotme@gmail.com Signed-off-by: Rafael J. Wysocki

Documentation: intel_pstate: fix duplicate hyperlink target errors

2025-10-29T19:04:50+00:00

Fix reST warnings in Documentation/admin-guide/pm/intel_pstate.rst caused by missing explicit hyperlink labels for section titles. Before this change, the following errors were printed during `make htmldocs`: Documentation/admin-guide/pm/intel_pstate.rst:401: ERROR: Indirect hyperlink target (id="id6") refers to target "passive mode", which is a duplicate, and cannot be used as a unique reference. Documentation/admin-guide/pm/intel_pstate.rst:517: ERROR: Indirect hyperlink target (id="id9") refers to target "active mode", which is a duplicate, and cannot be used as a unique reference. Documentation/admin-guide/pm/intel_pstate.rst:611: ERROR: Indirect hyperlink target (id="id15") refers to target "global attributes", which is a duplicate, and cannot be used as a unique reference. ERROR: Duplicate target name, cannot be used as a unique reference: "passive mode", "active mode", "global attributes". These errors occurred because the sections "Active Mode", "Active Mode With HWP", "Passive Mode", and "Global Attributes" did not define explicit hyperlink labels. As a result, Sphinx auto-generated duplicate anchors when the same titles appeared multiple times within the document. Because of this, the generated HTML documentation contained broken references such as: `active mode `_ `passive mode `_ `global attributes `_ This patch adds explicit hyperlink labels for the affected sections, ensuring all references are unique and correctly resolved. After applying this patch, `make htmldocs` completes without any warnings, and all hyperlinks in intel_pstate.html render properly. Signed-off-by: Swaraj Gaikwad Reviewed-by: Bagas Sanjaya Acked-by: Randy Dunlap Tested-by: Randy Dunlap [ rjw: Subject adjustment ] Link: https://patch.msgid.link/20251029134737.42229-1-swarajgaikwad1925@gmail.com Signed-off-by: Rafael J. Wysocki

cpufreq: Drop unused symbol CPUFREQ_ETERNAL

2025-10-01T11:57:22+00:00

Drop CPUFREQ_ETERNAL that has no users any more along with all references to it in the documentation. No functional impact. Reviewed-by: Mario Limonciello (AMD) Reviewed-by: Jie Zhan Signed-off-by: Rafael J. Wysocki Acked-by: Viresh Kumar Reviewed-by: Qais Yousef

Merge back earlier cpufreq material for 6.17-rc1

2025-07-17T18:02:51+00:00

Documentation: amd-pstate:fix minimum performance state label error

2025-07-16T19:55:58+00:00

In the AMD P-States Performance Scale diagram, the labels for "Max Perf" and "Lowest Perf" were incorrectly used to define the range for "Desired Perf".The "Desired performance target" should be bounded by the "Maximum requested performance" and the "Minimum requested performance", which corresponds to "Max Perf" and "Min Perf", respectively. Signed-off-by: Shouye Liu Reviewed-by: Mario Limonciello Link: https://lore.kernel.org/r/20250522070140.17557-1-shouyeliu@gmail.com Signed-off-by: Mario Limonciello