74 lines
1.5 KiB
Plaintext
74 lines
1.5 KiB
Plaintext
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#! /bin/sh
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### BEGIN INIT INFO
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# Provides: ondemand
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# Required-Start: $remote_fs $all
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# Required-Stop:
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# Default-Start: 2 3 4 5
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# Default-Stop:
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# Short-Description: Set the CPU Frequency Scaling governor to "ondemand"
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### END INIT INFO
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# Don't run if we're going to start an Android LXC container:
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[ ! -f /etc/init/lxc-android-config.conf ] || exit 0
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PATH=/sbin:/usr/sbin:/bin:/usr/bin
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. /lib/init/vars.sh
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. /lib/lsb/init-functions
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AVAILABLE="/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors"
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DOWN_FACTOR="/sys/devices/system/cpu/cpufreq/ondemand/sampling_down_factor"
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case "$1" in
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start)
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start-stop-daemon --start --background --exec /etc/init.d/ondemand -- background
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;;
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background)
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sleep 60 # probably enough time for desktop login
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[ -f $AVAILABLE ] || exit 0
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read governors < $AVAILABLE
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case $governors in
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*interactive*)
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GOVERNOR="interactive"
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break
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;;
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*ondemand*)
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GOVERNOR="ondemand"
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case $(uname -m) in
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ppc64*)
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SAMPLING=100
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;;
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esac
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break
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;;
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*powersave*)
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GOVERNOR="powersave"
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break
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;;
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*)
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exit 0
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;;
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esac
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for CPUFREQ in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
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do
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[ -f $CPUFREQ ] || continue
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echo -n $GOVERNOR > $CPUFREQ
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done
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if [ -n "$SAMPLING" ] && [ -f $DOWN_FACTOR ]; then
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echo -n $SAMPLING > $DOWN_FACTOR
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fi
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;;
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restart|reload|force-reload)
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echo "Error: argument '$1' not supported" >&2
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exit 3
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;;
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stop)
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;;
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*)
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echo "Usage: $0 start|stop" >&2
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exit 3
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;;
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esac
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