Commit 41906248 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'pm-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm 

Pull power management updates from Rafael Wysocki:
 "These add a new cpufreq driver for Loongson-3, add support for new
  features in the intel_pstate (Lunar Lake and Arrow Lake platforms, OOB
  mode for Emerald Rapids, highest performance change interrupt),
  amd-pstate (fast CPPC) and sun50i (Allwinner H700 speed bin) cpufreq
  drivers, simplify the cpufreq driver interface, simplify the teo
  cpuidle governor, adjust the pm-graph utility for a new version of
  Python, address issues and clean up code.

  Specifics:

   - Add Loongson-3 CPUFreq driver support (Huacai Chen)

   - Add support for the Arrow Lake and Lunar Lake platforms and the
     out-of-band (OOB) mode on Emerald Rapids to the intel_pstate
     cpufreq driver, make it support the highest performance change
     interrupt and clean it up (Srinivas Pandruvada)

   - Switch cpufreq to new Intel CPU model defines (Tony Luck)

   - Simplify the cpufreq driver interface by switching the .exit()
     driver callback to the void return data type (Lizhe, Viresh Kumar)

   - Make cpufreq_boost_enabled() return bool (Dhruva Gole)

   - Add fast CPPC support to the amd-pstate cpufreq driver, address
     multiple assorted issues in it and clean it up (Perry Yuan, Mario
     Limonciello, Dhananjay Ugwekar, Meng Li, Xiaojian Du)

   - Add Allwinner H700 speed bin to the sun50i cpufreq driver (Ryan
     Walklin)

   - Fix memory leaks and of_node_put() usage in the sun50i and
     qcom-nvmem cpufreq drivers (Javier Carrasco)

   - Clean up the sti and dt-platdev cpufreq drivers (Jeff Johnson,
     Raphael Gallais-Pou)

   - Fix deferred probe handling in the TI cpufreq driver and wrong
     return values of ti_opp_supply_probe(), and add OPP tables for the
     AM62Ax and AM62Px SoCs to it (Bryan Brattlof, Primoz Fiser)

   - Avoid overflow of target_freq in .fast_switch() in the SCMI cpufreq
     driver (Jagadeesh Kona)

   - Use dev_err_probe() in every error path in probe in the Mediatek
     cpufreq driver (Nícolas Prado)

   - Fix kernel-doc param for longhaul_setstate in the longhaul cpufreq
     driver (Yang Li)

   - Fix system resume handling in the CPPC cpufreq driver (Riwen Lu)

   - Improve the teo cpuidle governor and clean up leftover comments
     from the menu cpuidle governor (Christian Loehle)

   - Clean up a comment typo in the teo cpuidle governor (Atul Kumar
     Pant)

   - Add missing MODULE_DESCRIPTION() macro to cpuidle haltpoll (Jeff
     Johnson)

   - Switch the intel_idle driver to new Intel CPU model defines (Tony
     Luck)

   - Switch the Intel RAPL driver new Intel CPU model defines (Tony
     Luck)

   - Simplify if condition in the idle_inject driver (Thorsten Blum)

   - Fix missing cleanup on error in _opp_attach_genpd() (Viresh Kumar)

   - Introduce an OF helper function to inform if required-opps is used
     and drop a redundant in-parameter to _set_opp_level() (Ulf Hansson)

   - Update pm-graph to v5.12 which includes fixes and major code revamp
     for python3.12 (Todd Brandt)

   - Address several assorted issues in the cpupower utility (Roman
     Storozhenko)"

* tag 'pm-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (77 commits)
  cpufreq: sti: fix build warning
  cpufreq: mediatek: Use dev_err_probe in every error path in probe
  cpufreq: Add Loongson-3 CPUFreq driver support
  cpufreq: Make cpufreq_driver->exit() return void
  cpufreq/amd-pstate: Fix the scaling_max_freq setting on shared memory CPPC systems
  cpufreq/amd-pstate-ut: Convert nominal_freq to khz during comparisons
  cpufreq: pcc: Remove empty exit() callback
  cpufreq: loongson2: Remove empty exit() callback
  cpufreq: nforce2: Remove empty exit() callback
  cpupower: fix lib default installation path
  cpufreq: docs: Add missing scaling_available_frequencies description
  cpuidle: teo: Don't count non-existent intercepts
  cpupower: Disable direct build of the 'bench' subproject
  cpuidle: teo: Remove recent intercepts metric
  Revert: "cpuidle: teo: Introduce util-awareness"
  cpufreq: make cpufreq_boost_enabled() return bool
  cpufreq: intel_pstate: Support highest performance change interrupt
  x86/cpufeatures: Add HWP highest perf change feature flag
  Documentation: cpufreq: amd-pstate: update doc for Per CPU boost control method
  cpufreq: amd-pstate: Cap the CPPC.max_perf to nominal_perf if CPB is off
  ...
parents 15114e8f a02bed41

Documentation/admin-guide/pm/amd-pstate.rst

+17 −1
Original line number Diff line number Diff line
@@ -281,6 +281,22 @@ integer values defined between 0 to 255 when EPP feature is enabled by platform 
firmware, if EPP feature is disabled, driver will ignore the written value

This attribute is read-write.



``boost``

The `boost` sysfs attribute provides control over the CPU core

performance boost, allowing users to manage the maximum frequency limitation

of the CPU. This attribute can be used to enable or disable the boost feature

on individual CPUs.



When the boost feature is enabled, the CPU can dynamically increase its frequency

beyond the base frequency, providing enhanced performance for demanding workloads.

On the other hand, disabling the boost feature restricts the CPU to operate at the

base frequency, which may be desirable in certain scenarios to prioritize power

efficiency or manage temperature.



To manipulate the `boost` attribute, users can write a value of `0` to disable the

boost or `1` to enable it, for the respective CPU using the sysfs path

`/sys/devices/system/cpu/cpuX/cpufreq/boost`, where `X` represents the CPU number.



Other performance and frequency values can be read back from

``/sys/devices/system/cpu/cpuX/acpi_cppc/``, see :ref:`cppc_sysfs`.
@@ -406,7 +422,7 @@ control its functionality at the system level. They are located in the 
``/sys/devices/system/cpu/amd_pstate/`` directory and affect all CPUs.



``status``

	Operation mode of the driver: "active", "passive" or "disable".

	Operation mode of the driver: "active", "passive", "guided" or "disable".



	"active"

		The driver is functional and in the ``active mode``

Documentation/admin-guide/pm/cpufreq.rst

+4 −0
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@@ -267,6 +267,10 @@ are the following: 
``related_cpus``

	List of all (online and offline) CPUs belonging to this policy.



``scaling_available_frequencies``

	List of available frequencies of the CPUs belonging to this policy

	(in kHz).



``scaling_available_governors``

	List of ``CPUFreq`` scaling governors present in the kernel that can

	be attached to this policy or (if the |intel_pstate| scaling driver is

MAINTAINERS

+1 −0
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@@ -13040,6 +13040,7 @@ F: Documentation/arch/loongarch/ 
F:	Documentation/translations/zh_CN/arch/loongarch/

F:	arch/loongarch/

F:	drivers/*/*loongarch*

F:	drivers/cpufreq/loongson3_cpufreq.c









LOONGSON GPIO DRIVER









M:	Yinbo Zhu <zhuyinbo@loongson.cn>
































arch/x86/include/asm/cpufeatures.h



+2
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@@ -361,6 +361,7 @@







#define X86_FEATURE_HWP_ACT_WINDOW	(14*32+ 9) /* "hwp_act_window" HWP Activity Window */









#define X86_FEATURE_HWP_EPP		(14*32+10) /* "hwp_epp" HWP Energy Perf. Preference */









#define X86_FEATURE_HWP_PKG_REQ		(14*32+11) /* "hwp_pkg_req" HWP Package Level Request */









#define X86_FEATURE_HWP_HIGHEST_PERF_CHANGE (14*32+15) /* HWP Highest perf change */









#define X86_FEATURE_HFI			(14*32+19) /* "hfi" Hardware Feedback Interface */



















/* AMD SVM Feature Identification, CPUID level 0x8000000a (EDX), word 15 */








@@ -471,6 +472,7 @@







#define X86_FEATURE_BHI_CTRL		(21*32+ 2) /* BHI_DIS_S HW control available */









#define X86_FEATURE_CLEAR_BHB_HW	(21*32+ 3) /* BHI_DIS_S HW control enabled */









#define X86_FEATURE_CLEAR_BHB_LOOP_ON_VMEXIT (21*32+ 4) /* Clear branch history at vmexit using SW loop */









#define X86_FEATURE_FAST_CPPC		(21*32 + 5) /* AMD Fast CPPC */



















/*









 * BUG word(s)
































arch/x86/include/asm/msr-index.h



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@@ -783,6 +783,8 @@







#define MSR_K7_HWCR_IRPERF_EN		BIT_ULL(MSR_K7_HWCR_IRPERF_EN_BIT)









#define MSR_K7_FID_VID_CTL		0xc0010041









#define MSR_K7_FID_VID_STATUS		0xc0010042









#define MSR_K7_HWCR_CPB_DIS_BIT		25









#define MSR_K7_HWCR_CPB_DIS		BIT_ULL(MSR_K7_HWCR_CPB_DIS_BIT)



















/* K6 MSRs */









#define MSR_K6_WHCR			0xc0000082