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| author | Jan Kiszka <jan.kiszka@siemens.com> | 2026-02-21 09:21:55 +0300 |
|---|---|---|
| committer | Shuah Khan <skhan@linuxfoundation.org> | 2026-03-03 21:07:06 +0300 |
| commit | 50ad1a31bed898787e12b73cb5716fe7960cdde4 (patch) | |
| tree | da54df92d9905792862b898977f6f13a0231a2c6 | |
| parent | dff8e3c025862001956b8edb29c1287c9efcd902 (diff) | |
| download | linux-50ad1a31bed898787e12b73cb5716fe7960cdde4.tar.xz | |
cpupower: Add support for setting EPP via systemd service
Extend the systemd service so that it can be used for tuning the Energy
Performance Preference (EPP) as well. Available options can be read from
/sys/devices/system/cpu/cpufreq/policy0/energy_performance_available_preferences.
The desired one can then be set in cpupower-service.conf.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
| -rw-r--r-- | tools/power/cpupower/cpupower-service.conf | 5 | ||||
| -rw-r--r-- | tools/power/cpupower/cpupower.sh | 6 |
2 files changed, 11 insertions, 0 deletions
diff --git a/tools/power/cpupower/cpupower-service.conf b/tools/power/cpupower/cpupower-service.conf index 02eabe8e3614..abbb46967565 100644 --- a/tools/power/cpupower/cpupower-service.conf +++ b/tools/power/cpupower/cpupower-service.conf @@ -30,3 +30,8 @@ # its policy for the relative importance of performance versus energy savings to # the processor. See man CPUPOWER-SET(1) for additional details #PERF_BIAS= + +# Set the Energy Performance Preference +# Available options can be read from +# /sys/devices/system/cpu/cpufreq/policy0/energy_performance_available_preferences +#EPP= diff --git a/tools/power/cpupower/cpupower.sh b/tools/power/cpupower/cpupower.sh index a37dd4cfdb2b..6283e8bf275d 100644 --- a/tools/power/cpupower/cpupower.sh +++ b/tools/power/cpupower/cpupower.sh @@ -23,4 +23,10 @@ then cpupower set -b "$PERF_BIAS" > /dev/null || ESTATUS=1 fi +# apply Energy Performance Preference +if test -n "$EPP" +then + cpupower set -e "$EPP" > /dev/null || ESTATUS=1 +fi + exit $ESTATUS |