Merge branch 'pm-cpufreq'

Merge cpufreq updates for 6.16-rc1:

 - Refactor cpufreq_online(), add and use cpufreq policy locking guards,
   use __free() in policy reference counting, and clean up core cpufreq
   code on top of that (Rafael Wysocki).

 - Fix boost handling on CPU suspend/resume and sysfs updates (Viresh
   Kumar).

 - Fix des_perf clamping with max_perf in amd_pstate_update() (Dhananjay
   Ugwekar).

 - Add offline, online and suspend callbacks to the amd-pstate driver,
   rename and use the existing amd_pstate_epp callbacks in it (Dhananjay
   Ugwekar).

 - Add support for the "Requested CPU Min frequency" BIOS option to the
   amd-pstate driver (Dhananjay Ugwekar).

 - Reset amd-pstate driver mode after running selftests (Swapnil
   Sapkal).

 - Add helper for governor checks to the schedutil cpufreq governor and
   move cpufreq-specific EAS checks to cpufreq (Rafael Wysocki).

 - Populate the cpu_capacity sysfs entries from the intel_pstate driver
   after registering asym capacity support (Ricardo Neri).

 - Add support for enabling Energy-aware scheduling (EAS) to the
   intel_pstate driver when operating in the passive mode on a hybrid
   platform (Rafael Wysocki).

 - Avoid shadowing ret in amd_pstate_ut_check_driver() (Nathan
   Chancellor).

 - Drop redundant cpus_read_lock() from store_local_boost() in the
   cpufreq core (Seyediman Seyedarab).

 - Replace sscanf() with kstrtouint() in the cpufreq code and use a
   symbol instead of a raw number in it (Bowen Yu).

 - Add support for autonomous CPU performance state selection to the
   CPPC cpufreq driver (Lifeng Zheng).

* pm-cpufreq: (31 commits)
  cpufreq: CPPC: Add support for autonomous selection
  cpufreq: Update sscanf() to kstrtouint()
  cpufreq: Replace magic number
  cpufreq: drop redundant cpus_read_lock() from store_local_boost()
  cpufreq/amd-pstate: Avoid shadowing ret in amd_pstate_ut_check_driver()
  cpufreq: intel_pstate: Document hybrid processor support
  cpufreq: intel_pstate: EAS: Increase cost for CPUs using L3 cache
  cpufreq: intel_pstate: EAS support for hybrid platforms
  cpufreq: Drop policy locking from cpufreq_policy_is_good_for_eas()
  cpufreq: intel_pstate: Populate the cpu_capacity sysfs entries
  arch_topology: Relocate cpu_scale to topology.[h|c]
  cpufreq/sched: Move cpufreq-specific EAS checks to cpufreq
  cpufreq/sched: schedutil: Add helper for governor checks
  amd-pstate-ut: Reset amd-pstate driver mode after running selftests
  cpufreq/amd-pstate: Add support for the "Requested CPU Min frequency" BIOS option
  cpufreq/amd-pstate: Add offline, online and suspend callbacks for amd_pstate_driver
  cpufreq: Force sync policy boost with global boost on sysfs update
  cpufreq: Preserve policy's boost state after resume
  cpufreq: Introduce policy_set_boost()
  cpufreq: Don't unnecessarily call set_boost()
  ...

1 files changed, 54 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu
index 6a1acabb29d8..03f43fb667a3 100644
--- a/Documentation/ABI/testing/sysfs-devices-system-cpu
+++ b/Documentation/ABI/testing/sysfs-devices-system-cpu
@@ -268,6 +268,60 @@ Description:	Discover CPUs in the same CPU frequency coordination domain
 		This file is only present if the acpi-cpufreq or the cppc-cpufreq
 		drivers are in use.
 
+What:		/sys/devices/system/cpu/cpuX/cpufreq/auto_select
+Date:		May 2025
+Contact:	linux-pm@vger.kernel.org
+Description:	Autonomous selection enable
+
+		Read/write interface to control autonomous selection enable
+			Read returns autonomous selection status:
+				0: autonomous selection is disabled
+				1: autonomous selection is enabled
+
+			Write 'y' or '1' or 'on' to enable autonomous selection.
+			Write 'n' or '0' or 'off' to disable autonomous selection.
+
+		This file is only present if the cppc-cpufreq driver is in use.
+
+What:		/sys/devices/system/cpu/cpuX/cpufreq/auto_act_window
+Date:		May 2025
+Contact:	linux-pm@vger.kernel.org
+Description:	Autonomous activity window
+
+		This file indicates a moving utilization sensitivity window to
+		the platform's autonomous selection policy.
+
+		Read/write an integer represents autonomous activity window (in
+		microseconds) from/to this file. The max value to write is
+		1270000000 but the max significand is 127. This means that if 128
+		is written to this file, 127 will be stored. If the value is
+		greater than 130, only the first two digits will be saved as
+		significand.
+
+		Writing a zero value to this file enable the platform to
+		determine an appropriate Activity Window depending on the workload.
+
+		Writing to this file only has meaning when Autonomous Selection is
+		enabled.
+
+		This file is only present if the cppc-cpufreq driver is in use.
+
+What:		/sys/devices/system/cpu/cpuX/cpufreq/energy_performance_preference_val
+Date:		May 2025
+Contact:	linux-pm@vger.kernel.org
+Description:	Energy performance preference
+
+		Read/write an 8-bit integer from/to this file. This file
+		represents a range of values from 0 (performance preference) to
+		0xFF (energy efficiency preference) that influences the rate of
+		performance increase/decrease and the result of the hardware's
+		energy efficiency and performance optimization policies.
+
+		Writing to this file only has meaning when Autonomous Selection is
+		enabled.
+
+		This file is only present if the cppc-cpufreq driver is in use.
+
 
 What:		/sys/devices/system/cpu/cpu*/cache/index3/cache_disable_{0,1}
 Date:		August 2008