Commit 50ad1a31 authored by Jan Kiszka's avatar Jan Kiszka Committed by Shuah Khan
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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: default avatarJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: default avatarShuah Khan <skhan@linuxfoundation.org>
parent dff8e3c0

tools/power/cpupower/cpupower-service.conf

+5 −0
Original line number Diff line number Diff line
@@ -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=

tools/power/cpupower/cpupower.sh

+6 −0
Original line number Diff line number Diff line
@@ -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