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#!/sbin/runscript
# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-power/cpudyn/files/cpudyn.init,v 1.1 2005/03/14 22:37:27 ciaranm Exp $
#
# Based on the Debian init script written by Celso Gonzalez <celso@bulma.net>,
# and on the cpufreqd Gentoo init script written by Robert Gogolok <robertgogolok@web.de>.
# Heavily modified by Robin H. Johnson <robbat2@gentoo.org> to ensure correct
# start only under support conditions
# More preconditions by Karl Trygve Kalleberg <karltk@gentoo.org>
#
DAEMON=/usr/sbin/cpudynd
PIDFILE=/var/run/cpudynd.pid
opts="${opts} min max dynamic"
depend() {
need localmount
}
checkconfig() {
local CPUFREQ_FILES="${CPUFREQ_24} ${CPUFREQ_25} ${CPUFREQ_ACPI}"
local CPUFREQ_FILE=""
for i in ${CPUFREQ_FILES}; do [ -e ${i} ] && CPUFREQ_FILE="${i}" && break ; done
if [ -z "${CPUFREQ_FILE}" ]; then
eerror "Neither CPUFreq nor ACPI throttling support were found"
return 1
fi
if [ "${CPUFREQ_FILE}" = "${CPUFREQ_ACPI}" ]; then
# see if the file says we are supported or not
grep 'not supported' ${CPUFREQ_ACPI} 2>&1 >/dev/null
retval="$?"
if [ $retval -eq 0 ]; then
eerror "ACPI throttling support found, but hardware doesn't support it"
return 1
fi
# now check that we can write to the file
local acpistate=`grep 'active state' ${CPUFREQ_ACPI} | cut -dT -f2-`
echo $acpistate > ${CPUFREQ_ACPI}
retval="$?"
if [ $retval -ne 0 ]; then
eerror "Writing to ACPI throttling file failed"
return 1
fi
fi
# CPUFREQ_25 has more than one entry, hence the grep -- karltk
if [ ! -z "$(echo ${CPUFREQ_25} | grep ${CPUFREQ_FILE})" ]; then
# Silently try to load the governors; shouldn't hurt if they're already there
modprobe -q cpufreq_performance
modprobe -q cpufreq_powersave
modprobe -q cpufreq_userspace
modprobe -q cpufreq_ondemand
fi
return 0
}
start() {
local CPUDYN_OPTS=""
if [ -n "$INTERVAL" ]; then CPUDYN_OPTS="$CPUDYN_OPTS -i $INTERVAL"; fi
if [ -n "$CPU_UP" -a -n "$CPU_DOWN" ]; then CPUDYN_OPTS="$CPUDYN_OPTS -p $CPU_UP $CPU_DOWN"; fi
if [ -n "$THROTTLING_LOW" ]; then CPUDYN_OPTS="$CPUDYN_OPTS -l $THROTTLING_LOW"; fi
if [ -n "$TIMEOUT" ]; then CPUDYN_OPTS="$CPUDYN_OPTS -t $TIMEOUT"; fi
if [ -n "$DISKS" ]; then CPUDYN_OPTS="$CPUDYN_OPTS -h $DISKS"; fi
if [ "$NICE" == "yes" ]; then CPUDYN_OPTS="$CPUDYN_OPTS -nice"; fi
ebegin "Starting cpudynd"
if checkconfig; then
start-stop-daemon --start --quiet --pidfile $PIDFILE \
--background --make-pidfile --exec $DAEMON -- $CPUDYN_OPTS
eend $?
else
eend 1
fi
}
stop() {
ebegin "Stopping cpudynd"
start-stop-daemon --stop --quiet --pidfile $PIDFILE \
--exec $DAEMON && rm -f $PIDFILE
eend $?
}
min() {
ebegin "Forcing minimal speed"
kill -USR2 $(cat ${PIDFILE})
eend $?
}
max() {
ebegin "Forcing maximal speed"
kill -USR1 $(cat ${PIDFILE})
eend $?
}
dynamic() {
ebegin "Resetting to default dynamic speed"
kill -HUP $(cat ${PIDFILE})
eend $?
}
# vim:ts=4 noexpandtab:
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