#!/bin/bash
#
### BEGIN INIT INFO
# Provides: cpufreq
# Default-Start: 2 3 4 5
# Short-Description: Set CPU frequency settings
# Description: Set CPU frequency settings
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

RETVAL=0

start() {
	gprintf "Setting CPU frequency settings: "
	touch /var/lock/subsys/cpufreq
	test -f /etc/sysconfig/cpufreq && . /etc/sysconfig/cpufreq
	for cpu in /sys/devices/system/cpu/* ; do
		[ "x$GOVERNOR" != "x" ] && [ -f  $cpu/cpufreq/scaling_governor ] && echo $GOVERNOR > $cpu/cpufreq/scaling_governor
		[ "x$MAX_FREQ" != "x" ] && [ -f  $cpu/cpufreq/scaling_max_freq ] && echo $MAX_FREQ > $cpu/cpufreq/scaling_max_freq
		[ "x$MIN_FREQ" != "x" ] && [ -f  $cpu/cpufreq/scaling_min_freq ] && echo $MIN_FREQ > $cpu/cpufreq/scaling_min_freq
	done
	success
	echo
}

real_stop() {
	gprintf "Resetting CPU frequency settings: "
	# make sure no governor module is in use first
	# by switching to userspace governor (because it's built-in and won't modify frequency)
	for cpu in /sys/devices/system/cpu/* ; do
	    [ -f  $cpu/cpufreq/scaling_governor ] && echo userspace > $cpu/cpufreq/scaling_governor
	done
	rm -f /var/lock/subsys/cpufreq
	success
	echo
}

restart() {
	real_stop
	start
}

case "$1" in
	start)
		start
		;;
	stop)
		;;
	restart|reload)
		restart
		;;
	condrestart)
		if [ -f /var/lock/subsys/cpufreq ]; then
			restart
		fi
		;;
	status)
		[ -f /var/lock/subsys/cpufreq ]
		RETVAL=$?
		;;
	*)
		gprintf "Usage: %s {start|stop|restart|condrestart|status}\n" `basename $0`
		RETVAL=1
		;;
esac

exit $RETVAL