starfive-tech/linux.git/tools/power/cpupower, branch visionfive

cpupower: Allow control of boost feature on non-x86 based systems with boost support.

2025-08-15T16:49:14+00:00

The cpufreq subsystem has a generic sysfs interface for controlling boost (/sys/devices/system/cpu/cpufreq/boost). The sysfs interface can be used to enable boost control from the cpupower command on non-x86 platforms as well. So, allow boost controlling on non-x86 system if boost sysfs file exists. The set subcommand enables/disables the boost feature using the following syntax: cpupower set --boost 1 cpupower set --boost 0 The --boost option is an alias for --turbo-boost. We provided the neutral option name because the name "turbo boost" is specific to Intel technology. The frequency-info subcommand displays the enabled/disabled state of the boost feature as follows: boost state support: Active: yes (or no) Link: https://lore.kernel.org/r/20250522061122.2149188-3-fj5851bi@fujitsu.com Signed-off-by: Shinji Nomoto Signed-off-by: Shuah Khan

cpupower: Fix a bug where the -t option of the set subcommand was not working.

2025-08-15T16:49:13+00:00

The set subcommand's -t option is documented as being available for boost configuration, but it was not actually functioning due to a bug in the option handling. Link: https://lore.kernel.org/r/20250522061122.2149188-2-fj5851bi@fujitsu.com Signed-off-by: Shinji Nomoto Signed-off-by: Shuah Khan

cpupower: Improve Python binding's Makefile

2025-07-01T16:58:00+00:00

Add a few build variables to make it easier for distributions to package the bindings. Allow current variables to be overwritten by environment variables that are passed to make. CCing Thorsten Leemhuis . https://lore.kernel.org/r/20250624204105.457971-1-jwyatt@redhat.com Signed-off-by: John B. Wyatt IV Signed-off-by: John B. Wyatt IV Signed-off-by: Shuah Khan

pm: cpupower: Fix printing of CORE, CPU fields in cpupower-monitor

2025-06-18T22:21:18+00:00

After the commit 0014f65e3df0 ("pm: cpupower: remove hard-coded topology depth values"), "cpupower monitor" output ceased to print the CORE and the CPU fields on a multi-socket platform. The reason for this is that the patch changed the behaviour to break out of the switch-case after printing the PKG details, while prior to the patch, the CORE and the CPU details would also get printed since the "if" condition check would pass for any level whose topology depth was lesser than that of a package. Fix this ensuring all the details below a desired topology depth are printed in the cpupower monitor output. Link: https://lore.kernel.org/r/20250612122355.19629-3-gautham.shenoy@amd.com Fixes: 0014f65e3df0 ("pm: cpupower: remove hard-coded topology depth values") Signed-off-by: Gautham R. Shenoy Signed-off-by: Shuah Khan

pm: cpupower: Fix the snapshot-order of tsc,mperf, clock in mperf_stop()

2025-06-18T22:21:12+00:00

In the function mperf_start(), mperf_monitor snapshots the time, tsc and finally the aperf,mperf MSRs. However, this order of snapshotting in is reversed in mperf_stop(). As a result, the C0 residency (which is computed as delta_mperf * 100 / delta_tsc) is under-reported on CPUs that is 100% busy. Fix this by snapshotting time, tsc and then aperf,mperf in mperf_stop() in the same order as in mperf_start(). Link: https://lore.kernel.org/r/20250612122355.19629-2-gautham.shenoy@amd.com Signed-off-by: Gautham R. Shenoy Signed-off-by: Shuah Khan

cpupower: split unitdir from libdir in Makefile

2025-06-09T16:17:46+00:00

Improve the installation procedure for the systemd service unit 'cpupower.service', to be more flexible. Some distros install libraries to /usr/lib64/, but systemd service units have to be installed to /usr/lib/systemd/system: as a consequence, the installation procedure should not assume that systemd service units can be installed to ${libdir}/systemd/system ... Define a dedicated variable ("unitdir") in the Makefile. Link: https://lore.kernel.org/linux-pm/260b6d79-ab61-43b7-a0eb-813e257bc028@leemhuis.info/T/#m0601940ab439d5cbd288819d2af190ce59e810e6 Fixes: 9c70b779ad91 ("cpupower: add a systemd service to run cpupower") Link: https://lore.kernel.org/r/20250521211656.65646-1-invernomuto@paranoici.org Signed-off-by: Francesco Poli (wintermute) Tested-by: Thorsten Leemhuis Signed-off-by: Shuah Khan

cpupower: do not install files to /etc/default/

2025-05-13T22:06:28+00:00

Improve the installation procedure for the systemd service unit 'cpupower.service', to be more distro-agnostic. Do not install the service unit configuration file to /etc/default/ (a directory that is used by Debian and Debian-derivatives and only rarely by other distros). Also, clarify the role of the configuration file in its own comments. Link: https://lore.kernel.org/linux-pm/20250509002206.bd2519ba52035d47c3c32aa6@paranoici.org/T/#ma8a3fa80acc4036af6c754e8ecabacc55b288ad1 Link: https://lore.kernel.org/r/20250513163937.61062-5-invernomuto@paranoici.org Fixes: 9c70b779ad91 ("cpupower: add a systemd service to run cpupower") Signed-off-by: Francesco Poli (wintermute) Signed-off-by: Shuah Khan

cpupower: do not call systemctl at install time

2025-05-13T22:06:22+00:00

Fix the installation procedure for the systemd service unit 'cpupower.service'. Do not call "systemctl daemon-reload" in the Makefile, but explain when this command should be manually issued in the README file. Link: https://lore.kernel.org/linux-pm/20250509002206.bd2519ba52035d47c3c32aa6@paranoici.org/T/#mfbb938f9c0d5a21173acb92a061eb9205fd0abfe Link: https://lore.kernel.org/r/20250513163937.61062-4-invernomuto@paranoici.org Fixes: 9c70b779ad91 ("cpupower: add a systemd service to run cpupower") Signed-off-by: Francesco Poli (wintermute) Signed-off-by: Shuah Khan

cpupower: do not write DESTDIR to cpupower.service

2025-05-13T22:06:12+00:00

Fix the use of DESTDIR variable in the Makefile, as far as the installation of the systemd service unit 'cpupower.service' is concerned. This was caused by a misunderstanding about the purpose of the DESTDIR variable in the Makefile, which is instead meant to support staged installations: its value should not end up into installed file contents. Link: https://lore.kernel.org/linux-pm/20250509002206.bd2519ba52035d47c3c32aa6@paranoici.org/T/#mfbb938f9c0d5a21173acb92a061eb9205fd0abfe Link: https://www.gnu.org/prep/standards/html_node/DESTDIR.html Link: https://lore.kernel.org/r/20250513163937.61062-3-invernomuto@paranoici.org Fixes: 9c70b779ad91 ("cpupower: add a systemd service to run cpupower") Signed-off-by: Francesco Poli (wintermute) Signed-off-by: Shuah Khan

cpupower: change binding's makefile to use -lcpupower

2025-05-02T19:52:51+00:00

Originally I believed I needed the .o files to make the bindings. The linking failed due to a missing .so link in Fedora or by using make install-lib from the cpupower directory. Amend the makefile and the README. Big thanks to Wander Lairson Costa for the help. Link: https://lore.kernel.org/r/20250429204711.127274-1-jwyatt@redhat.com Signed-off-by: "John B. Wyatt IV" Signed-off-by: "John B. Wyatt IV" Signed-off-by: Shuah Khan