[GIT PULL] Power management updates for v6.15-rc1

From: Rafael J. Wysocki
Date: Mon Mar 24 2025 - 12:33:01 EST

Next message: Rafael J. Wysocki: "[GIT PULL] Thermal control updates for v6.15-rc1"
Previous message: Laurentiu Mihalcea: "[PATCH v3 5/5] arm64: dts: imx8mp: make 'dsp' node depend on 'aips5'"
Next in thread: pr-tracker-bot: "Re: [GIT PULL] Power management updates for v6.15-rc1"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Hi Linus,

Please pull from the tag

git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git \
pm-6.15-rc1

with top-most commit c5a55e427c947f013f08cbbf2be23bd4df2c9590

Merge branch 'pm-misc'

on top of commit 80e54e84911a923c40d7bee33a34c1b4be148d7a

Linux 6.14-rc6

to receive power management updates for 6.15-rc1.

These are dominated by cpufreq updates which in turn are dominated by
updates related to boost support in the core and drivers and amd-pstate
driver optimizations.

Apart from the above, there are some cpuidle updates including a rework
of the most recent idle intervals handling in the venerable menu governor
that leads to significant improvements in some performance benchmarks, as
the governor is now more likely to predict a shorter idle duration in
some cases, and there are updates of the core device power management
code, mostly related to system suspend and resume, that should help to
avoid potential issues arising when the drivers of devices depending on
one another want to use different optimizations.

There is also a usual collection of assorted fixes and cleanups,
including removal of some unused code.

Specifics:

- Manage sysfs attributes and boost frequencies efficiently from
cpufreq core to reduce boilerplate code in drivers (Viresh Kumar).

- Minor cleanups to cpufreq drivers (Aaron Kling, Benjamin Schneider,
Dhananjay Ugwekar, Imran Shaik, zuoqian).

- Migrate some cpufreq drivers to using for_each_present_cpu() (Jacky
Bai).

- cpufreq-qcom-hw DT binding fixes (Krzysztof Kozlowski).

- Use str_enable_disable() helper in cpufreq_online() (Lifeng Zheng).

- Optimize the amd-pstate driver to avoid cases where call paths end
up calling the same writes multiple times and needlessly caching
variables through code reorganization, locking overhaul and tracing
adjustments (Mario Limonciello, Dhananjay Ugwekar).

- Make it possible to avoid enabling capacity-aware scheduling (CAS) in
the intel_pstate driver and relocate a check for out-of-band (OOB)
platform handling in it to make it detect OOB before checking HWP
availability (Rafael Wysocki).

- Fix dbs_update() to avoid inadvertent conversions of negative integer
values to unsigned int which causes CPU frequency selection to be
inaccurate in some cases when the "conservative" cpufreq governor is
in use (Jie Zhan).

- Update the handling of the most recent idle intervals in the menu
cpuidle governor to prevent useful information from being discarded
by it in some cases and improve the prediction accuracy (Rafael
Wysocki).

- Make it possible to tell the intel_idle driver to ignore its built-in
table of idle states for the given processor, clean up the handling
of auto-demotion disabling on Baytrail and Cherrytrail chips in it,
and update its MAINTAINERS entry (David Arcari, Artem Bityutskiy,
Rafael Wysocki).

- Make some cpuidle drivers use for_each_present_cpu() instead of
for_each_possible_cpu() during initialization to avoid issues
occurring when nosmp or maxcpus=0 are used (Jacky Bai).

- Clean up the Energy Model handling code somewhat (Rafael Wysocki).

- Use kfree_rcu() to simplify the handling of runtime Energy Model
updates (Li RongQing).

- Add an entry for the Energy Model framework to MAINTAINERS as
properly maintained (Lukasz Luba).

- Address RCU-related sparse warnings in the Energy Model code (Rafael
Wysocki).

- Remove ENERGY_MODEL dependency on SMP and allow it to be selected
when DEVFREQ is set without CPUFREQ so it can be used on a wider
range of systems (Jeson Gao).

- Unify error handling during runtime suspend and runtime resume in the
core to help drivers to implement more consistent runtime PM error
handling (Rafael Wysocki).

- Drop a redundant check from pm_runtime_force_resume() and rearrange
documentation related to __pm_runtime_disable() (Rafael Wysocki).

- Rework the handling of the "smart suspend" driver flag in the PM core
to avoid issues that may occur when drivers using it depend on some
other drivers and clean up the related PM core code (Rafael Wysocki,
Colin Ian King).

- Fix the handling of devices with the power.direct_complete flag set
if device_suspend() returns an error for at least one device to avoid
situations in which some of them may not be resumed (Rafael Wysocki).

- Use mutex_trylock() in hibernate_compressor_param_set() to avoid a
possible deadlock that may occur if the "compressor" hibernation
module parameter is accessed during the registration of a new
ieee80211 device (Lizhi Xu).

- Suppress sleeping parent warning in device_pm_add() in the case when
new children are added under a device with the power.direct_complete
set after it has been processed by device_resume() (Xu Yang).

- Remove needless return in three void functions related to system
wakeup (Zijun Hu).

- Replace deprecated kmap_atomic() with kmap_local_page() in the
hibernation core code (David Reaver).

- Remove unused helper functions related to system sleep (David Alan
Gilbert).

- Clean up s2idle_enter() so it does not lock and unlock CPU offline
in vain and update comments in it (Ulf Hansson).

- Clean up broken white space in dpm_wait_for_children() (Geert
Uytterhoeven).

- Update the cpupower utility to fix lib version-ing in it and memory
leaks in error legs, remove hard-coded values, and implement CPU
physical core querying (Thomas Renninger, John B. Wyatt IV, Shuah
Khan, Yiwei Lin, Zhongqiu Han).

Thanks!

---------------

Aaron Kling (2):
cpufreq: tegra194: Allow building for Tegra234
cpufreq: tegra186: Share policy per cluster

Artem Bityutskiy (1):
intel_idle: clean up BYT/CHT auto demotion disable

Benjamin Schneider (1):
cpufreq: enable 1200Mhz clock speed for armada-37xx

Colin Ian King (1):
PM: sleep: Fix bit masking operation

David Arcari (1):
intel_idle: introduce 'no_native' module parameter

David Reaver (1):
PM: hibernate: Replace deprecated kmap_atomic() with kmap_local_page()

Dhananjay Ugwekar (11):
cpufreq: amd-pstate: Remove unnecessary driver_lock in set_boost
cpufreq/amd-pstate: Modify the min_perf calculation in
adjust_perf callback
cpufreq/amd-pstate: Remove the redundant des_perf clamping in adjust_perf
cpufreq/amd-pstate: Pass min/max_limit_perf as min/max_perf to
amd_pstate_update
cpufreq/amd-pstate: Convert all perf values to u8
cpufreq/amd-pstate: Modularize perf<->freq conversion
cpufreq/amd-pstate: Remove the unnecessary cpufreq_update_policy call
cpufreq/amd-pstate: Add missing NULL ptr check in amd_pstate_update
cpufreq/amd-pstate: Use scope based cleanup for cpufreq_policy refs
cpufreq/amd-pstate: Remove the unncecessary driver_lock in
amd_pstate_update_limits
cpufreq/amd-pstate: Fix the clamping of perf values

Dr. David Alan Gilbert (3):
PM: clk: remove unused of_pm_clk_add_clk()
PM: sleep: Remove unused pm_generic_ wrappers
PM: clk: Remove unused pm_clk_remove()

Geert Uytterhoeven (1):
PM: sleep: core: Fix indentation in dpm_wait_for_children()

Imran Shaik (1):
dt-bindings: cpufreq: cpufreq-qcom-hw: Add QCS8300 compatible

Jacky Bai (2):
cpuidle: Init cpuidle only for present CPUs
cpufreq: Init cpufreq only for present CPUs

Jeson Gao (1):
PM: EM: Rework the depends on for CONFIG_ENERGY_MODEL

Jie Zhan (1):
cpufreq: governor: Fix negative 'idle_time' handling in dbs_update()

John B. Wyatt IV (1):
cpupower: Implement CPU physical core querying

Krzysztof Kozlowski (3):
dt-bindings: cpufreq: cpufreq-qcom-hw: Add missing constraint
for interrupt-names
dt-bindings: cpufreq: cpufreq-qcom-hw: Drop redundant minItems:1
dt-bindings: cpufreq: cpufreq-qcom-hw: Narrow properties on
SDX75, SA8775p and SM8650

Li RongQing (1):
PM: EM: use kfree_rcu() to simplify the code

Lifeng Zheng (1):
cpufreq: Use str_enable_disable() helper

Lizhi Xu (1):
PM: hibernate: Avoid deadlock in hibernate_compressor_param_set()

Lukasz Luba (1):
MAINTAINERS: Add Energy Model framework as properly maintained

Mario Limonciello (19):
cpufreq/amd-pstate: Invalidate cppc_req_cached during suspend
cpufreq/amd-pstate: Show a warning when a CPU fails to setup
cpufreq/amd-pstate: Drop min and max cached frequencies
cpufreq/amd-pstate: Move perf values into a union
cpufreq/amd-pstate: Overhaul locking
cpufreq/amd-pstate: Drop `cppc_cap1_cached`
cpufreq/amd-pstate-ut: Use _free macro to free put policy
cpufreq/amd-pstate-ut: Allow lowest nonlinear and lowest to be the same
cpufreq/amd-pstate-ut: Drop SUCCESS and FAIL enums
cpufreq/amd-pstate-ut: Run on all of the correct CPUs
cpufreq/amd-pstate-ut: Adjust variable scope
cpufreq/amd-pstate: Replace all AMD_CPPC_* macros with masks
cpufreq/amd-pstate: Cache CPPC request in shared mem case too
cpufreq/amd-pstate: Move all EPP tracing into *_update_perf and
*_set_epp functions
cpufreq/amd-pstate: Update cppc_req_cached for shared mem EPP writes
cpufreq/amd-pstate: Drop debug statements for policy setting
cpufreq/amd-pstate: Rework CPPC enabling
cpufreq/amd-pstate: Stop caching EPP
cpufreq/amd-pstate: Drop actions in amd_pstate_epp_cpu_offline()

Rafael J. Wysocki (27):
PM: EM: Drop unused parameter from em_adjust_new_capacity()
PM: EM: Slightly reduce em_check_capacity_update() overhead
cpufreq: intel_pstate: Make it possible to avoid enabling CAS
PM: Rearrange documentation related to __pm_runtime_disable()
PM: Block enabling of runtime PM during system suspend
PM: runtime: Introduce pm_runtime_blocked()
PM: sleep: Use DPM_FLAG_SMART_SUSPEND conditionally
cpufreq: intel_pstate: Relocate platform preference check
cpuidle: menu: Drop a redundant local variable
cpuidle: menu: Use one loop for average and variance computations
cpuidle: menu: Tweak threshold use in get_typical_interval()
cpuidle: menu: Eliminate outliers on both ends of the sample set
cpuidle: menu: Avoid discarding useful information
cpuidle: menu: Update documentation after get_typical_interval() changes
cpuidle: intel_idle: Update MAINTAINERS
PM: sleep: Avoid unnecessary checks in device_prepare_smart_suspend()
PM: runtime: Drop status check from pm_runtime_force_resume()
PM: sleep: Adjust check before setting power.must_resume
PM: sleep: Update power.smart_suspend under PM spinlock
PM: runtime: Convert pm_runtime_blocked() to static inline
PM: core: Tweak pm_runtime_block_if_disabled() return value
PM: sleep: Rename power.async_in_progress to power.work_in_progress
PM: sleep: Rearrange dpm_async_fn() and async state clearing
PM: runtime: Unify error handling during suspend and resume
PM: EM: Consify two parameters of em_dev_register_perf_domain()
PM: EM: Address RCU-related sparse warnings
PM: sleep: Fix handling devices with direct_complete set on errors

Shuah Khan (2):
pm: cpupower: Fix cmd_monitor() error legs to free cpu_topology
pm: cpupower: remove hard-coded topology depth values

Thomas Renninger (1):
cpupower: Make lib versioning scheme more obvious and fix version link

Ulf Hansson (2):
PM: s2idle: Drop redundant locks when entering s2idle
PM: s2idle: Extend comment in s2idle_enter()

Viresh Kumar (48):
cpufreq: Always create freq-table related sysfs file
cpufreq: dt: Stop setting cpufreq_driver->attr field
cpufreq: acpi: Stop setting common freq attributes
cpufreq: apple: Stop setting cpufreq_driver->attr field
cpufreq: bmips: Stop setting cpufreq_driver->attr field
cpufreq: brcmstb: Stop setting common freq attributes
cpufreq: davinci: Stop setting cpufreq_driver->attr field
cpufreq: e_powersaver: Stop setting cpufreq_driver->attr field
cpufreq: elanfreq: Stop setting cpufreq_driver->attr field
cpufreq: imx6q: Stop setting cpufreq_driver->attr field
cpufreq: kirkwood: Stop setting cpufreq_driver->attr field
cpufreq: longhaul: Stop setting cpufreq_driver->attr field
cpufreq: loongson: Stop setting cpufreq_driver->attr field
cpufreq: mediatek: Stop setting cpufreq_driver->attr field
cpufreq: omap: Stop setting cpufreq_driver->attr field
cpufreq: p4: Stop setting cpufreq_driver->attr field
cpufreq: pasemi: Stop setting cpufreq_driver->attr field
cpufreq: pmac: Stop setting cpufreq_driver->attr field
cpufreq: powernow: Stop setting cpufreq_driver->attr field
cpufreq: powernv: Stop setting common freq attributes
cpufreq: qcom: Stop setting cpufreq_driver->attr field
cpufreq: qoriq: Stop setting cpufreq_driver->attr field
cpufreq: sc520_freq: Stop setting cpufreq_driver->attr field
cpufreq: scmi: Stop setting cpufreq_driver->attr field
cpufreq: scpi: Stop setting cpufreq_driver->attr field
cpufreq: sh: Stop setting cpufreq_driver->attr field
cpufreq: spear: Stop setting cpufreq_driver->attr field
cpufreq: speedstep: Stop setting cpufreq_driver->attr field
cpufreq: tegra: Stop setting cpufreq_driver->attr field
cpufreq: vexpress: Stop setting cpufreq_driver->attr field
cpufreq: virtual: Stop setting cpufreq_driver->attr field
cpufreq: Remove cpufreq_generic_attrs
cpufreq: Stop checking for duplicate available/boost freq attributes
cpufreq: staticize cpufreq_boost_trigger_state()
cpufreq: Export cpufreq_boost_set_sw()
cpufreq: Introduce policy->boost_supported flag
cpufreq: acpi: Set policy->boost_supported
cpufreq: amd: Set policy->boost_supported
cpufreq: cppc: Set policy->boost_supported
cpufreq: Restrict enabling boost on policies with no boost frequencies
cpufreq: apple: Set .set_boost directly
cpufreq: loongson: Set .set_boost directly
cpufreq: powernv: Set .set_boost directly
cpufreq: scmi: Set .set_boost directly
cpufreq: dt: Set .set_boost directly
cpufreq: qcom: Set .set_boost directly
cpufreq: staticize policy_has_boost_freq()
cpufreq: Remove cpufreq_enable_boost_support()

Xu Yang (1):
PM: sleep: Suppress sleeping parent warning in special case

Yiwei Lin (1):
cpupower: monitor: Exit with error status if execvp() fail

Zhongqiu Han (1):
pm: cpupower: bench: Prevent NULL dereference on malloc failure

Zijun Hu (1):
PM: wakeup: Remove needless return in three void APIs

zuoqian (1):
cpufreq: scpi: compare kHz instead of Hz

---------------

Documentation/admin-guide/kernel-parameters.txt | 3 +
Documentation/admin-guide/pm/cpuidle.rst | 29 +-
Documentation/admin-guide/pm/intel_idle.rst | 18 +-
Documentation/admin-guide/pm/intel_pstate.rst | 3 +
.../bindings/cpufreq/cpufreq-qcom-hw.yaml | 35 +-
MAINTAINERS | 17 +-
arch/x86/include/asm/msr-index.h | 20 +-
arch/x86/kernel/acpi/cppc.c | 4 +-
drivers/acpi/device_pm.c | 4 +-
drivers/base/power/clock_ops.c | 73 ---
drivers/base/power/generic_ops.c | 24 -
drivers/base/power/main.c | 165 +++--
drivers/base/power/runtime.c | 87 ++-
drivers/cpufreq/Kconfig.arm | 2 +-
drivers/cpufreq/acpi-cpufreq.c | 4 +-
drivers/cpufreq/amd-pstate-trace.h | 57 +-
drivers/cpufreq/amd-pstate-ut.c | 211 +++----
drivers/cpufreq/amd-pstate.c | 670 +++++++++------------
drivers/cpufreq/amd-pstate.h | 65 +-
drivers/cpufreq/apple-soc-cpufreq.c | 18 +-
drivers/cpufreq/armada-37xx-cpufreq.c | 6 +-
drivers/cpufreq/armada-8k-cpufreq.c | 2 +-
drivers/cpufreq/bmips-cpufreq.c | 1 -
drivers/cpufreq/brcmstb-avs-cpufreq.c | 1 -
drivers/cpufreq/cppc_cpufreq.c | 9 +-
drivers/cpufreq/cpufreq-dt.c | 24 +-
drivers/cpufreq/cpufreq.c | 46 +-
drivers/cpufreq/cpufreq_governor.c | 45 +-
drivers/cpufreq/davinci-cpufreq.c | 1 -
drivers/cpufreq/e_powersaver.c | 1 -
drivers/cpufreq/elanfreq.c | 1 -
drivers/cpufreq/freq_table.c | 15 +-
drivers/cpufreq/imx6q-cpufreq.c | 1 -
drivers/cpufreq/intel_pstate.c | 27 +-
drivers/cpufreq/kirkwood-cpufreq.c | 1 -
drivers/cpufreq/longhaul.c | 1 -
drivers/cpufreq/loongson2_cpufreq.c | 1 -
drivers/cpufreq/loongson3_cpufreq.c | 11 +-
drivers/cpufreq/mediatek-cpufreq-hw.c | 3 +-
drivers/cpufreq/mediatek-cpufreq.c | 3 +-
drivers/cpufreq/mvebu-cpufreq.c | 2 +-
drivers/cpufreq/omap-cpufreq.c | 1 -
drivers/cpufreq/p4-clockmod.c | 1 -
drivers/cpufreq/pasemi-cpufreq.c | 1 -
drivers/cpufreq/pmac32-cpufreq.c | 1 -
drivers/cpufreq/pmac64-cpufreq.c | 1 -
drivers/cpufreq/powernow-k6.c | 1 -
drivers/cpufreq/powernow-k7.c | 1 -
drivers/cpufreq/powernow-k8.c | 1 -
drivers/cpufreq/powernv-cpufreq.c | 11 +-
drivers/cpufreq/qcom-cpufreq-hw.c | 16 +-
drivers/cpufreq/qcom-cpufreq-nvmem.c | 8 +-
drivers/cpufreq/qoriq-cpufreq.c | 1 -
drivers/cpufreq/sc520_freq.c | 1 -
drivers/cpufreq/scmi-cpufreq.c | 21 +-
drivers/cpufreq/scpi-cpufreq.c | 8 +-
drivers/cpufreq/sh-cpufreq.c | 1 -
drivers/cpufreq/spear-cpufreq.c | 1 -
drivers/cpufreq/speedstep-centrino.c | 1 -
drivers/cpufreq/speedstep-ich.c | 1 -
drivers/cpufreq/speedstep-smi.c | 1 -
drivers/cpufreq/sun50i-cpufreq-nvmem.c | 6 +-
drivers/cpufreq/tegra186-cpufreq.c | 8 +-
drivers/cpufreq/tegra194-cpufreq.c | 1 -
drivers/cpufreq/vexpress-spc-cpufreq.c | 1 -
drivers/cpufreq/virtual-cpufreq.c | 3 +-
drivers/cpuidle/cpuidle-arm.c | 8 +-
drivers/cpuidle/cpuidle-big_little.c | 2 +-
drivers/cpuidle/cpuidle-psci.c | 4 +-
drivers/cpuidle/cpuidle-qcom-spm.c | 2 +-
drivers/cpuidle/cpuidle-riscv-sbi.c | 4 +-
drivers/cpuidle/governors/menu.c | 129 ++--
drivers/idle/intel_idle.c | 35 +-
drivers/mfd/intel-lpss.c | 2 +-
drivers/pci/pci-driver.c | 6 +-
drivers/powercap/Kconfig | 2 +-
include/linux/cpufreq.h | 24 +-
include/linux/device.h | 9 +
include/linux/energy_model.h | 20 +-
include/linux/pm.h | 9 +-
include/linux/pm_clock.h | 5 -
include/linux/pm_runtime.h | 33 +-
include/linux/pm_wakeup.h | 6 +-
kernel/power/Kconfig | 3 +-
kernel/power/energy_model.c | 67 +--
kernel/power/hibernate.c | 6 +-
kernel/power/snapshot.c | 16 +-
kernel/power/suspend.c | 14 +-
tools/power/cpupower/Makefile | 19 +-
tools/power/cpupower/bench/parse.c | 4 +
tools/power/cpupower/lib/cpupower.c | 48 +-
tools/power/cpupower/lib/cpupower.h | 3 +
.../cpupower/utils/idle_monitor/cpupower-monitor.c | 48 +-
93 files changed, 1146 insertions(+), 1191 deletions(-)

Next message: Rafael J. Wysocki: "[GIT PULL] Thermal control updates for v6.15-rc1"
Previous message: Laurentiu Mihalcea: "[PATCH v3 5/5] arm64: dts: imx8mp: make 'dsp' node depend on 'aips5'"
Next in thread: pr-tracker-bot: "Re: [GIT PULL] Power management updates for v6.15-rc1"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]