Merge tag 'pm-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:
 "Once again, the changes are dominated by cpufreq updates, but this
  time the majority of them are cpufreq core changes, mostly related to
  the introduction of policy locking guards and __free() usage, and
  fixes related to boost handling.

  Still, there is also a significant update of the intel_pstate driver
  making it register an energy model when running on a hybrid platform
  which is used for enabling energy-aware scheduling (EAS) if the driver
  operates in the passive mode (and schedutil is used as the cpufreq
  governor for all CPUs which is the passive mode default).

  There are some amd-pstate driver updates too, for a good measure,
  including the "Requested CPU Min frequency" BIOS option support and
  new online/offline callbacks.

  In the cpuidle space, the most significant change is the addition of a
  C1 demotion on/off sysfs knob to intel_idle which should help some
  users to configure their systems more precisely. There is also the
  conversion of the PSCI cpuidle driver to a faux device one and there
  are two small updates of cpuidle governors.

  Device power management is also modified quite a bit, especially the
  handling of devices with asynchronous suspend and resume enabled
  during system transitions. They are now going to be handled more
  asynchronously during suspend transitions and somewhat less
  aggressively during resume transitions.

  Apart from the above, the operating performance points (OPP) library
  is now going to use mutex locking guards and scope-based cleanup
  helpers and there is the usual bunch of assorted fixes and code
  cleanups.

  Specifics:

   - Fix potential division-by-zero error in em_compute_costs() (Yaxiong
     Tian)

   - Fix typos in energy model documentation and example driver code
     (Moon Hee Lee, Atul Kumar Pant)

   - Rearrange the energy model management code and add a new function
     for adjusting a CPU energy model after adjusting the capacity of
     the given CPU to it (Rafael Wysocki)

   - 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)

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

   - 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)

   - 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)

   - OPP: Add dev_pm_opp_set_level() (Praveen Talari)

   - Introduce scope-based cleanup headers and mutex locking guards in
     OPP core (Viresh Kumar)

   - Switch OPP to use kmemdup_array() (Zhang Enpei)

   - Optimize bucket assignment when next_timer_ns equals KTIME_MAX in
     the menu cpuidle governor (Zhongqiu Han)

   - Convert the cpuidle PSCI driver to a faux device one (Sudeep Holla)

   - Add C1 demotion on/off sysfs knob to the intel_idle driver (Artem
     Bityutskiy)

   - Fix typos in two comments in the teo cpuidle governor (Atul Kumar
     Pant)

   - Fix denying of auto suspend in pm_suspend_timer_fn() (Charan Teja
     Kalla)

   - Move debug runtime PM attributes to runtime_attrs[] (Rafael
     Wysocki)

   - Add new devm_ functions for enabling runtime PM and runtime PM
     reference counting (Bence Csókás)

   - Remove size arguments from strscpy() calls in the hibernation core
     code (Thorsten Blum)

   - Adjust the handling of devices with asynchronous suspend enabled
     during system suspend and resume to start resuming them immediately
     after resuming their parents and to start suspending such a device
     immediately after suspending its first child (Rafael Wysocki)

   - Adjust messages printed during tasks freezing to avoid using
     pr_cont() (Andrew Sayers, Paul Menzel)

   - Clean up unnecessary usage of !! in pm_print_times_init() (Zihuan
     Zhang)

   - Add missing wakeup source attribute relax_count to sysfs and remove
     the space character at the end ofi the string produced by
     pm_show_wakelocks() (Zijun Hu)

   - Add configurable pm_test delay for hibernation (Zihuan Zhang)

   - Disable asynchronous suspend in ucsi_ccg_probe() to prevent the
     cypd4226 device on Tegra boards from suspending prematurely (Jon
     Hunter)

   - Unbreak printing PM debug messages during hibernation and clean up
     some related code (Rafael Wysocki)

   - Add a systemd service to run cpupower and change cpupower binding's
     Makefile to use -lcpupower (John B. Wyatt IV, Francesco Poli)"

* tag 'pm-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (72 commits)
  cpufreq: CPPC: Add support for autonomous selection
  cpufreq: Update sscanf() to kstrtouint()
  cpufreq: Replace magic number
  OPP: switch to use kmemdup_array()
  PM: freezer: Rewrite restarting tasks log to remove stray *done.*
  PM: runtime: fix denying of auto suspend in pm_suspend_timer_fn()
  cpufreq: drop redundant cpus_read_lock() from store_local_boost()
  cpupower: do not install files to /etc/default/
  cpupower: do not call systemctl at install time
  cpupower: do not write DESTDIR to cpupower.service
  PM: sleep: Introduce pm_sleep_transition_in_progress()
  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
  PM: EM: Introduce em_adjust_cpu_capacity()
  PM: EM: Move CPU capacity check to em_adjust_new_capacity()
  PM: EM: Documentation: Fix typos in example driver code
  cpufreq: Drop policy locking from cpufreq_policy_is_good_for_eas()
  PM: sleep: Introduce pm_suspend_in_progress()
  ...

8 files changed, 128 insertions, 11 deletions

diff --git a/tools/power/cpupower/Makefile b/tools/power/cpupower/Makefile
index 835123add0ed..be8dfac14076 100644
--- a/tools/power/cpupower/Makefile
+++ b/tools/power/cpupower/Makefile
@@ -2,6 +2,7 @@
 # Makefile for cpupower
 #
 # Copyright (C) 2005,2006 Dominik Brodowski <linux@dominikbrodowski.net>
+# Copyright (C) 2025      Francesco Poli <invernomuto@paranoici.org>
 #
 # Based largely on the Makefile for udev by:
 #
@@ -71,6 +72,7 @@ bindir ?=	/usr/bin
 sbindir ?=	/usr/sbin
 mandir ?=	/usr/man
 libdir ?=	/usr/lib
+libexecdir ?=	/usr/libexec
 includedir ?=	/usr/include
 localedir ?=	/usr/share/locale
 docdir ?=       /usr/share/doc/packages/cpupower
@@ -83,6 +85,7 @@ CP = cp -fpR
 INSTALL = /usr/bin/install -c
 INSTALL_PROGRAM = ${INSTALL}
 INSTALL_DATA  = ${INSTALL} -m 644
+SETPERM_DATA  = chmod 644
 #bash completion scripts get sourced and so they should be rw only.
 INSTALL_SCRIPT = ${INSTALL} -m 644
 
@@ -302,6 +305,13 @@ install-tools: $(OUTPUT)cpupower
 	$(INSTALL_PROGRAM) $(OUTPUT)cpupower $(DESTDIR)${bindir}
 	$(INSTALL) -d $(DESTDIR)${bash_completion_dir}
 	$(INSTALL_SCRIPT) cpupower-completion.sh '$(DESTDIR)${bash_completion_dir}/cpupower'
+	$(INSTALL) -d $(DESTDIR)${confdir}
+	$(INSTALL_DATA) cpupower-service.conf '$(DESTDIR)${confdir}'
+	$(INSTALL) -d $(DESTDIR)${libexecdir}
+	$(INSTALL_PROGRAM) cpupower.sh '$(DESTDIR)${libexecdir}/cpupower'
+	$(INSTALL) -d $(DESTDIR)${libdir}/systemd/system
+	sed 's|___CDIR___|${confdir}|; s|___LDIR___|${libexecdir}|' cpupower.service.in > '$(DESTDIR)${libdir}/systemd/system/cpupower.service'
+	$(SETPERM_DATA) '$(DESTDIR)${libdir}/systemd/system/cpupower.service'
 
 install-man:
 	$(INSTALL_DATA) -D man/cpupower.1 $(DESTDIR)${mandir}/man1/cpupower.1
@@ -336,6 +346,9 @@ uninstall:
 	- rm -f $(DESTDIR)${includedir}/cpufreq.h
 	- rm -f $(DESTDIR)${includedir}/cpuidle.h
 	- rm -f $(DESTDIR)${bindir}/utils/cpupower
+	- rm -f $(DESTDIR)${confdir}cpupower-service.conf
+	- rm -f $(DESTDIR)${libexecdir}/cpupower
+	- rm -f $(DESTDIR)${libdir}/systemd/system/cpupower.service
 	- rm -f $(DESTDIR)${mandir}/man1/cpupower.1
 	- rm -f $(DESTDIR)${mandir}/man1/cpupower-frequency-set.1
 	- rm -f $(DESTDIR)${mandir}/man1/cpupower-frequency-info.1
diff --git a/tools/power/cpupower/README b/tools/power/cpupower/README
index 2678ed81d311..9de449469568 100644
--- a/tools/power/cpupower/README
+++ b/tools/power/cpupower/README
@@ -59,6 +59,10 @@ $ sudo make install
 -----------------------------------------------------------------------
 | man pages              | /usr/man                                   |
 -----------------------------------------------------------------------
+| systemd service        | /usr/lib/systemd/system                    |
+-----------------------------------------------------------------------
+| systemd support script | /usr/libexec                               |
+-----------------------------------------------------------------------
 
 To put it in other words it makes build results available system-wide,
 enabling any user to simply start using it without any additional steps
@@ -109,6 +113,10 @@ The files will be installed to the following dirs:
 -----------------------------------------------------------------------
 | man pages              | ${DESTDIR}/usr/man                         |
 -----------------------------------------------------------------------
+| systemd service        | ${DESTDIR}/usr/lib/systemd/system          |
+-----------------------------------------------------------------------
+| systemd support script | ${DESTDIR}/usr/libexec                     |
+-----------------------------------------------------------------------
 
 If you look at the table for the default 'make' output dirs you will
 notice that the only difference with the non-default case is the
@@ -173,6 +181,26 @@ The issue is that binary cannot find the 'libcpupower' library. So, we
 shall point to the lib dir:
 sudo LD_LIBRARY_PATH=lib64/ ./bin/cpupower
 
+systemd service
+---------------
+
+A systemd service is also provided to run the cpupower utility at boot with
+settings read from a configuration file.
+
+If you want systemd to find the new service after the installation, the service
+unit must have been installed in one of the system unit search path directories
+(such as '/usr/lib/systemd/system/', which is the default location) and (unless
+you are willing to wait for the next reboot) you need to issue the following
+command:
+
+$ sudo systemctl daemon-reload
+
+If you want to enable this systemd service, edit '/etc/cpupower-service.conf'
+(uncommenting at least one of the options, depending on your preferences)
+and then issue the following command:
+
+$ sudo systemctl enable --now cpupower.service
+
 
 THANKS
 ------
diff --git a/tools/power/cpupower/bindings/python/Makefile b/tools/power/cpupower/bindings/python/Makefile
index 741f21477432..81db39a03efb 100644
--- a/tools/power/cpupower/bindings/python/Makefile
+++ b/tools/power/cpupower/bindings/python/Makefile
@@ -1,22 +1,20 @@
 # SPDX-License-Identifier: GPL-2.0-only
 # Makefile for libcpupower's Python bindings
 #
-# This Makefile expects you have already run the makefile for cpupower to build
-# the .o files in the lib directory for the bindings to be created.
+# This Makefile expects you have already run `make install-lib` in the lib
+# directory for the bindings to be created.
 
 CC := gcc
 HAVE_SWIG := $(shell if which swig >/dev/null 2>&1; then echo 1; else echo 0; fi)
 HAVE_PYCONFIG := $(shell if which python-config >/dev/null 2>&1; then echo 1; else echo 0; fi)
 
-LIB_DIR := ../../lib
 PY_INCLUDE = $(firstword $(shell python-config --includes))
-OBJECTS_LIB = $(wildcard $(LIB_DIR)/*.o)
 INSTALL_DIR = $(shell python3 -c "import site; print(site.getsitepackages()[0])")
 
 all: _raw_pylibcpupower.so
 
 _raw_pylibcpupower.so: raw_pylibcpupower_wrap.o
-	$(CC) -shared $(OBJECTS_LIB) raw_pylibcpupower_wrap.o -o _raw_pylibcpupower.so
+	$(CC) -shared -lcpupower raw_pylibcpupower_wrap.o -o _raw_pylibcpupower.so
 
 raw_pylibcpupower_wrap.o: raw_pylibcpupower_wrap.c
 	$(CC) -fPIC -c raw_pylibcpupower_wrap.c $(PY_INCLUDE)
diff --git a/tools/power/cpupower/bindings/python/README b/tools/power/cpupower/bindings/python/README
index 952e2e02fd32..2a4896b648b7 100644
--- a/tools/power/cpupower/bindings/python/README
+++ b/tools/power/cpupower/bindings/python/README
@@ -5,18 +5,21 @@ libcpupower (aside from the libcpupower object files).
 requirements
 ------------
 
-* You need the object files in the libcpupower directory compiled by
-cpupower's makefile.
+* If you are building completely from upstream; please install libcpupower by
+running `make install-lib` within the cpupower directory. This installs the
+libcpupower.so file and symlinks needed. Otherwise, please make sure a symlink
+to libcpupower.so exists in your library path from your distribution's
+packages.
 * The SWIG program must be installed.
-* The Python's development libraries installed.
+* The Python's development libraries must be installed.
 
 Please check that your version of SWIG is compatible with the version of Python
 installed on your machine by checking the SWIG changelog on their website.
 https://swig.org/
 
 Note that while SWIG itself is GPL v3+ licensed; the resulting output,
-the bindings code: is permissively licensed + the license of libcpupower's .o
-files. For these bindings that means GPL v2.
+the bindings code: is permissively licensed + the license of libcpupower's
+library files. For these bindings that means GPL v2.
 
 Please see https://swig.org/legal.html and the discussion [1] for more details.
 
diff --git a/tools/power/cpupower/cpupower-service.conf b/tools/power/cpupower/cpupower-service.conf
new file mode 100644
index 000000000000..02eabe8e3614
--- /dev/null
+++ b/tools/power/cpupower/cpupower-service.conf
@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2012, Sébastien Luttringer
+# Copyright (C) 2024-2025, Francesco Poli <invernomuto@paranoici.org>
+
+# Configuration file for cpupower.service systemd service unit
+#
+# Edit this file (uncommenting at least one of the options, depending on
+# your preferences) and then enable cpupower.service, if you want cpupower
+# to run at boot with these settings.
+
+# --- CPU clock frequency ---
+
+# Define CPU governor
+# Valid governors: ondemand, performance, powersave, conservative, userspace
+#GOVERNOR='ondemand'
+
+# Limit frequency range
+# Valid suffixes: Hz, kHz (default), MHz, GHz, THz
+#MIN_FREQ="2.25GHz"
+#MAX_FREQ="3GHz"
+
+# Set a specific frequency
+# Requires userspace governor to be available.
+# If this option is set, all the previous frequency options are ignored
+#FREQ=
+
+# --- CPU policy ---
+
+# Set a register on supported Intel processore which allows software to convey
+# its policy for the relative importance of performance versus energy savings to
+# the processor. See man CPUPOWER-SET(1) for additional details
+#PERF_BIAS=
diff --git a/tools/power/cpupower/cpupower.service.in b/tools/power/cpupower/cpupower.service.in
new file mode 100644
index 000000000000..fbd5b8c14270
--- /dev/null
+++ b/tools/power/cpupower/cpupower.service.in
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2012-2020, Sébastien Luttringer
+# Copyright (C) 2024-2025, Francesco Poli <invernomuto@paranoici.org>
+
+[Unit]
+Description=Apply cpupower configuration
+ConditionVirtualization=!container
+
+[Service]
+Type=oneshot
+EnvironmentFile=-___CDIR___cpupower-service.conf
+ExecStart=___LDIR___/cpupower
+RemainAfterExit=yes
+
+[Install]
+WantedBy=multi-user.target
diff --git a/tools/power/cpupower/cpupower.sh b/tools/power/cpupower/cpupower.sh
new file mode 100644
index 000000000000..a37dd4cfdb2b
--- /dev/null
+++ b/tools/power/cpupower/cpupower.sh
@@ -0,0 +1,26 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2012, Sébastien Luttringer
+# Copyright (C) 2024, Francesco Poli <invernomuto@paranoici.org>
+
+ESTATUS=0
+
+# apply CPU clock frequency options
+if test -n "$FREQ"
+then
+    cpupower frequency-set -f "$FREQ" > /dev/null || ESTATUS=1
+elif test -n "${GOVERNOR}${MIN_FREQ}${MAX_FREQ}"
+then
+    cpupower frequency-set \
+      ${GOVERNOR:+ -g "$GOVERNOR"} \
+      ${MIN_FREQ:+ -d "$MIN_FREQ"} ${MAX_FREQ:+ -u "$MAX_FREQ"} \
+      > /dev/null || ESTATUS=1
+fi
+
+# apply CPU policy options
+if test -n "$PERF_BIAS"
+then
+    cpupower set -b "$PERF_BIAS" > /dev/null || ESTATUS=1
+fi
+
+exit $ESTATUS
diff --git a/tools/power/pm-graph/sleepgraph.py b/tools/power/pm-graph/sleepgraph.py
index e2261f33a082..1555b51a7d55 100755
--- a/tools/power/pm-graph/sleepgraph.py
+++ b/tools/power/pm-graph/sleepgraph.py
@@ -4017,7 +4017,8 @@ def parseKernelLog(data):
 							'PM: early restore of devices complete after.*'],
 		'resume_complete': ['PM: resume of devices complete after.*',
 							'PM: restore of devices complete after.*'],
-		    'post_resume': [r'.*Restarting tasks \.\.\..*'],
+		    'post_resume': [r'.*Restarting tasks \.\.\..*',
+							'Done restarting tasks.*'],
 	}
 
 	# action table (expected events that occur and show up in dmesg)