MINI SHELL

#!/bin/sh
# Startup script for cpuspeed
#
# chkconfig: 12345 06 99
# description: Run dynamic CPU speed daemon

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

[ -f /usr/sbin/cpuspeed ] || exit 0

prog="cpuspeed"

# Get config.
if [ -f /etc/cpuspeed.conf ]; then
        . /etc/cpuspeed.conf
fi

cpu0freqd=/sys/devices/system/cpu/cpu0/cpufreq
testpat='/sys/devices/system/cpu/cpu*/cpufreq/scaling_driver'

some_file_exist() {
	while [ "$1" ] ; do
		[ -f "$1" ] && return 0
		shift
	done
	return 1
}

start() {
	if [ ! -f /var/lock/subsys/cpuspeed ] ; then
		if ! some_file_exist $testpat ; then
			# Attempt to load scaling_driver if not loaded
			# but it is configured

			if [ -n "$DRIVER" ]; then
				/sbin/modprobe "$DRIVER"
			else
				if [ -d /proc/acpi ] &&
					grep flags /proc/cpuinfo | \
						grep -q est ; then
					# use ACPI as a fallback 
					/sbin/modprobe acpi-cpufreq
					# if even ACPI didn't work, remove it
					# and then next test will bail out.
					[ -d ${cpu0freqd} ] || \
						/sbin/modprobe -r acpi-cpufreq
				else
					# No scaling. Just exit.
					return 0
				fi
			fi
		fi

		# If we get this far with no driver, we must have no scaling.
		# We're doomed.
		[ ! -f ${cpu0freqd}/scaling_driver ] && return 0

		drv=`cat ${cpu0freqd}/scaling_driver`

		case "$drv" in
		centrino|powernow-k8)
			/sbin/modprobe cpufreq-ondemand
			for i in /sys/devices/system/cpu/cpu*
			do
				echo ondemand > $i/cpufreq/scaling_governor
			done
			RETVAL=0
			;;
		*)
			echo -n $"Starting $prog: "
			daemon cpuspeed -d $OPTS
			RETVAL=$?
			echo
			[ $RETVAL = 0 ] && touch /var/lock/subsys/cpuspeed
		esac
	else
		return 0
	fi
	return $RETVAL
}

stop() {
	[ ! -f ${cpu0freqd}/scaling_driver ] && return 0
	drv=`cat ${cpu0freqd}/scaling_driver`

	case "$drv" in
	centrino|powernow-k8)
		/sbin/modprobe -r cpufreq-ondemand
		RETVAL=0
		;;
	*)
		if test "x`pidof cpuspeed`" != x; then
			echo -n $"Stopping $prog: "
			killproc cpuspeed -USR1
			killproc cpuspeed -INT
			echo
		fi
		if test "x`pidof cpuspeed`" != x; then
			killproc cpuspeed
		fi
		RETVAL=$?
	esac
	[ -n "$DRIVER" ] && /sbin/modprobe -r $DRIVER
	[ $RETVAL = 0 ] && RETVAL=$?
	[ $RETVAL = 0 ] && rm -f /var/lock/subsys/cpuspeed
	return $RETVAL
}

case "$1" in
	start)
	    start
	    ;;

	stop)
	    stop
	    ;;

	status)
	    status cpuspeed
	    ;;
	restart)
	    stop
	    start
	    ;;
	condrestart)
	    if test "x`pidof cpuspeed`" != x; then
		stop
		start
	    fi
	    ;;

	*)
	    echo $"Usage: $0 {start|stop|restart|condrestart|status}"
	    exit 1

esac

exit $RETVAL