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#!/bin/sh |
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|
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# the following is the LSB init header see |
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# http://www.linux-foundation.org/spec//booksets/LSB-Core-generic/LSB-Core-generic.html#INITSCRCOMCONV |
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# |
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### BEGIN INIT INFO |
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# Provides: cpuspeed |
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# Should-Start: |
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# Default-Start: 1 2 3 4 5 |
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# Short-Description: processor frequency scaling support |
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# Description: This script enables/disables processor frequency |
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# scaling support, either using the cpuspeed daemon |
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# or in-kernel frequency scaling support |
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### END INIT INFO |
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|
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# the following is the chkconfig init header |
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# |
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# cpuspeed: processor frequency scaling support |
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# |
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# chkconfig: 12345 13 99 |
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# description: Run dynamic CPU speed daemon and/or load appropriate |
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# cpu frequency scaling kernel modules and/or governors |
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# |
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|
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# Source function library. |
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. /etc/rc.d/init.d/functions |
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|
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prog="cpuspeed" |
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|
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[ -f /usr/sbin/$prog ] || exit 5 |
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|
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# Get config. |
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if [ -f /etc/sysconfig/$prog ]; then |
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. /etc/sysconfig/$prog |
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fi |
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|
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cpu0freqd=/sys/devices/system/cpu/cpu0/cpufreq |
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globfreq='/sys/devices/system/cpu' |
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cpufreq="${globfreq}/cpufreq" |
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cpus="${globfreq}/cpu[0-9]*" |
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testpat="${cpus}/cpufreq/scaling_driver" |
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lockfile="/var/lock/subsys/$prog" |
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xendir="/proc/xen" |
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logger="/usr/bin/logger -p info -t $prog" |
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IGNORE_NICE=${IGNORE_NICE:-0} |
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module_loaded=false |
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|
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some_file_exist() { |
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while [ "$1" ] ; do |
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[ -f "$1" ] && return 0 |
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shift |
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done |
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return 1 |
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} |
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|
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governor_is_module() { |
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# Check to see if the requested cpufreq governor |
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# is provided as a kernel module or not |
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module_info=`/sbin/modinfo cpufreq-${governor} > /dev/null 2>&1` |
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return $? |
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} |
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|
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is_p4_clockmod() { |
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if [ `/sbin/lsmod | grep -c -w "p4.clockmod"` -ge 1 -a -d "/sys/devices/system/cpu/cpu0/thermal_throttle" ]; then |
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return 0 |
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fi |
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return 1 |
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} |
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|
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governor_module_loaded() { |
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# Check to see if we have a module loaded for |
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# the current cpufreq governor |
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if [ -e ${cpu0freqd}/scaling_governor ]; then |
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governor=`cat ${cpu0freqd}/scaling_governor` |
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else |
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governor="none" |
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fi |
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if [ "${governor}" != "none" -a `/sbin/lsmod | grep -c -w "cpufreq.${governor}"` -ge 1 ]; then |
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return 0 |
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fi |
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return 1 |
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} |
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|
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adjust_cpufreq() { |
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# First arg is a param under $cpu/cpufreq/ |
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# Second arg is the value you want to set that param to |
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if $(echo ${1} | grep -qE '(threshold|ignore_nice_load)'); then |
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[ -f $cpufreq/$1 ] && echo $2 > $cpufreq/$1 |
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else |
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for cpu in ${cpus}; do |
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[ -f $cpu/cpufreq/$1 ] && echo $2 > $cpu/cpufreq/$1 |
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done |
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fi |
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} |
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|
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start_cpuspeed() { |
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echo -n $"Starting $prog: " |
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# cpuspeed daemon thresholds are specified as idle percentages, |
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# cpufreq modules as busy percentages, so we need to do some |
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# math here for use of unified config... |
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# DOWN_THRESHOLD doesn't mean exactly the same thing for |
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# cpuspeed as it does for the cpufreq governors, but close |
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# enough, and if not specified, we use same defaults as governors. |
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if [ -n "$UP_THRESHOLD" ]; then |
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let UP_THRESHOLD=100-$UP_THRESHOLD |
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else |
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UP_THRESHOLD=20 |
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fi |
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if [ -n "$DOWN_THRESHOLD" ]; then |
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let DOWN_THRESHOLD=100-$DOWN_THRESHOLD |
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else |
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DOWN_THRESHOLD=80 |
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fi |
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OPTS="$OPTS -r -p $UP_THRESHOLD $DOWN_THRESHOLD" |
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if [ -n "$MIN_SPEED" ]; then |
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OPTS="$OPTS -m $MIN_SPEED" |
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fi |
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if [ -n "$MAX_SPEED" ]; then |
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OPTS="$OPTS -M $MAX_SPEED" |
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fi |
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if [ "$IGNORE_NICE" -eq 0 ]; then |
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OPTS="$OPTS -n" |
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fi |
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daemon $prog -d $OPTS |
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RETVAL=$? |
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return $RETVAL |
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} |
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|
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stop_cpuspeed() { |
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if [ -n "`pidof $prog`" ]; then |
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echo -n $"Stopping $prog: " |
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killproc $prog -USR1 |
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killproc $prog -INT |
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fi |
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if [ -n "`pidof $prog`" ]; then |
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killproc $prog |
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fi |
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RETVAL=$? |
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return $RETVAL |
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} |
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|
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start() { |
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if [ $(id -u) -ne 0 ]; then |
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echo -n "Insufficient privileges to start cpuspeed service: " |
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failure; echo |
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return 4 |
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fi |
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if [ ! -f $lockfile ] && [ ! -d "$xendir" ]; then |
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cpu_vendor=$(awk '/vendor_id/{print $3}' /proc/cpuinfo | tail -n 1) |
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cpu_family=$(awk '/cpu family/{print $4}' /proc/cpuinfo | tail -n 1) |
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if ! some_file_exist $testpat ; then |
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# Attempt to load scaling_driver if not loaded |
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# but it is configured |
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if [ -n "$DRIVER" ]; then |
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/sbin/modprobe "$DRIVER" |
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elif [ -d /proc/acpi ]; then |
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/sbin/modprobe pcc-cpufreq 2> /dev/null |
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if [ ! -d ${cpu0freqd} ]; then |
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/sbin/modprobe -r pcc-cpufreq 2> /dev/null |
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if [ "$cpu_vendor" == AuthenticAMD ] && [ "$cpu_family" -ge 7 ]; then |
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# Try loading powernow-k8 if this is an AMD processor, |
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# family 7 or greater (Athlon XP/MP was family 6) |
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pk8m=$(/sbin/modinfo powernow-k8 > /dev/null 2>&1) |
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if [ "$?" -eq 0 ]; then |
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/sbin/modprobe powernow-k8 2> /dev/null |
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[ -d ${cpu0freqd} ] || /sbin/modprobe -r powernow-k8 2> /dev/null |
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fi |
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else |
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# use ACPI as a fallback |
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/sbin/modprobe acpi-cpufreq 2> /dev/null |
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# if even ACPI didn't work, remove it |
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# and then next test will bail out. |
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[ -d ${cpu0freqd} ] || /sbin/modprobe -r acpi-cpufreq 2> /dev/null |
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fi |
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fi |
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fi |
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if [ ! -d ${cpu0freqd} -a "$cpu_vendor" == GenuineIntel ]; then |
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# last-ditch effort for Intel proc boxes, try our neutered p4-clockmod |
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# to get at least passive cooling support (no clock changes) |
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/sbin/modprobe p4-clockmod 2> /dev/null |
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[ -d ${cpu0freqd} ] || /sbin/modprobe -r p4-clockmod 2> /dev/null |
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fi |
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fi |
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|
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# If we get this far with no driver, we must have no scaling. |
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# We're doomed. |
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[ ! -f ${cpu0freqd}/scaling_driver ] && return 6 |
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|
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# Okay, we have a driver, carry on... |
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drv=`cat ${cpu0freqd}/scaling_driver` |
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|
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# Figure out default governor to use |
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case "$drv" in |
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centrino|powernow-k8|pcc-cpufreq|acpi-cpufreq|e_powersaver) |
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default_governor=ondemand |
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;; |
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p4-clockmod) |
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# not actually a governor, we want to bail without doing either |
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# in-kernel scaling or starting up the cpuspeed daemon in this case |
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default_governor=p4passive |
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;; |
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intel_pstate) |
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default_governor=powersave |
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echo "CPU states managed by intel_pstate; use cpupower for configuration." |
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$logger "CPU states managed by intel_pstate; use cpupower for configuration." |
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;; |
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*) |
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default_governor=userspace |
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;; |
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esac |
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governor=${GOVERNOR:-${default_governor}} |
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|
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if [ "${governor}" == "p4passive" ]; then |
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echo -n "Enabling p4-clockmod driver (passive cooling only): " |
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success; echo |
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return 0 |
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fi |
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|
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# Load governor module, if need be, and validate |
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governor_is_module && /sbin/modprobe cpufreq-${governor} |
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if [ `grep -c -w ${governor} ${cpu0freqd}/scaling_available_governors` -ge 1 ]; then |
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$logger "Enabling ${governor} cpu frequency scaling governor" |
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else |
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$logger "Invalid governor \"${governor}\" specified, falling back to ${default_governor}" |
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governor_is_module && /sbin/modprobe -r cpufreq-${governor} |
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governor=${default_governor} |
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governor_is_module && /sbin/modprobe cpufreq-${governor} |
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fi |
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|
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# Set governor |
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adjust_cpufreq scaling_governor ${governor} |
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|
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# Run cpuspeed daemon for userspace gov, kernel ones otherwise |
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if [ "${governor}" == "userspace" ]; then |
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start_cpuspeed |
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RETVAL=$? |
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else |
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if [ -n "$MIN_SPEED" ]; then |
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adjust_cpufreq scaling_min_freq $MIN_SPEED |
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else |
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adjust_cpufreq scaling_min_freq 0 |
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fi |
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if [ -n "$MAX_SPEED" ]; then |
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adjust_cpufreq scaling_max_freq $MAX_SPEED |
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else |
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adjust_cpufreq scaling_max_freq `cat $cpu0freqd/cpuinfo_max_freq` |
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fi |
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if [ -n "$UP_THRESHOLD" -a ${governor} == "ondemand" ]; then |
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adjust_cpufreq ondemand/up_threshold $UP_THRESHOLD |
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fi |
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if [ -n "$DOWN_THRESHOLD" -a ${governor} == "conservative" ]; then |
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adjust_cpufreq conservative/down_threshold $DOWN_THRESHOLD |
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fi |
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if [ "$IGNORE_NICE" -eq 1 -a ${governor} == "ondemand" -o ${governor} == "conservative" ]; then |
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adjust_cpufreq ${governor}/ignore_nice_load $IGNORE_NICE |
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fi |
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echo -n "Enabling ${governor} cpu frequency scaling: " |
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success |
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RETVAL=0 |
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fi |
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echo |
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# Technically, not quite right in non-cpuspeed daemon |
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# cases, but close enough to indicate that we're |
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# doing some sort of cpu frequency scaling. |
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[ $RETVAL = 0 ] && touch $lockfile |
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else |
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if [ -d "$xendir" ]; then |
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$logger "CPU Frequency scaling is currently not supported on xen kernels" |
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fi |
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return 0 |
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fi |
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return $RETVAL |
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} |
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|
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stop() { |
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if [ $(id -u) -ne 0 ]; then |
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echo -n "Insufficient privileges to stop cpuspeed service: " |
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failure; echo |
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return 4 |
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fi |
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is_p4_clockmod && p4status="true" |
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if [ "$p4status" == "true" -a "x${GOVERNOR}" == "x" ]; then |
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echo "p4-clockmod passive cooling support cannot be truly stopped" |
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fi |
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[ ! -f ${cpu0freqd}/scaling_driver ] && return 0 |
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drv=`cat ${cpu0freqd}/scaling_driver` |
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governor_module_loaded && module_loaded=true |
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if [ "${drv}" != "intel_pstate" -a "${governor}" != "userspace" ] || |
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[ "${drv}" == "intel_pstate" -a "${governor}" != "powersave" ]; then |
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echo -n "Disabling ${governor} cpu frequency scaling: " |
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$logger "Disabling ${governor} cpu frequency scaling governor" |
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for cpu in ${cpus}; do |
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if [ "${drv}" == "intel_pstate" ]; then |
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echo powersave > $cpu/cpufreq/scaling_governor |
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else |
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echo userspace > $cpu/cpufreq/scaling_governor |
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cat $cpu/cpufreq/cpuinfo_max_freq > $cpu/cpufreq/scaling_setspeed |
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fi |
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done |
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if [ $module_loaded == true ]; then |
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/sbin/modprobe -r cpufreq-${governor} |
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fi |
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success |
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RETVAL=0 |
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else |
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stop_cpuspeed |
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RETVAL=$? |
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fi |
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echo |
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[ -n "$DRIVER" ] && /sbin/modprobe -r $DRIVER |
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[ $RETVAL = 0 ] && RETVAL=$? |
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[ $RETVAL = 0 ] && rm -f $lockfile |
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return $RETVAL |
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} |
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|
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reload() { |
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if [ $(id -u) -ne 0 ]; then |
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echo -n "Insufficient privileges to stop cpuspeed service: " |
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failure; echo |
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return 4 |
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fi |
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governor_module_loaded && module_loaded=true |
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if [ "${governor}" == "userspace" ]; then |
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failure; echo |
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return 3 |
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else |
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if [ -n "$MIN_SPEED" ]; then |
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adjust_cpufreq scaling_min_freq $MIN_SPEED |
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fi |
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if [ -n "$MAX_SPEED" ]; then |
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adjust_cpufreq scaling_max_freq $MAX_SPEED |
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fi |
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if [ -n "$UP_THRESHOLD" -a ${governor} == "ondemand" ]; then |
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adjust_cpufreq ondemand/up_threshold $UP_THRESHOLD |
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fi |
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if [ -n "$DOWN_THRESHOLD" -a ${governor} == "conservative" ]; then |
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adjust_cpufreq conservative/down_threshold $DOWN_THRESHOLD |
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fi |
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if [ "$IGNORE_NICE" -eq 1 -a ${governor} == "ondemand" -o ${governor} == "conservative" ]; then |
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adjust_cpufreq ${governor}/ignore_nice_load $IGNORE_NICE |
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fi |
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echo -n "Reloading configuration for ${governor}: " |
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success; echo |
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return 0 |
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fi |
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} |
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|
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case "$1" in |
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start) |
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start |
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;; |
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|
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stop) |
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stop |
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;; |
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|
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status) |
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is_p4_clockmod && p4status="true" |
| 359 |
if [ "$p4status" == "true" -a "x${GOVERNOR}" == "x" ]; then |
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echo "p4-clockmod passive cooling is enabled" |
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exit 0 |
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fi |
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governor_module_loaded && module_loaded=true |
| 364 |
if [ -d "$xendir" ]; then |
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echo "Frequency scaling not supported under xen kernels" |
| 366 |
RETVAL=0 |
| 367 |
elif [ $module_loaded == true -o ${governor} == "performance" ]; then |
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echo "Frequency scaling enabled using ${governor} governor" |
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RETVAL=0 |
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else |
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status $prog |
| 372 |
RETVAL="$?" |
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fi |
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;; |
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|
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restart|force-reload) |
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stop |
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start |
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;; |
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|
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reload) |
| 382 |
reload |
| 383 |
;; |
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|
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condrestart|try-restart) |
| 386 |
governor_module_loaded && module_loaded=true |
| 387 |
if [ $module_loaded == true -o -n "`pidof $prog`" -o ${governor} == "performance" ]; then |
| 388 |
stop |
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start |
| 390 |
fi |
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;; |
| 392 |
|
| 393 |
*) |
| 394 |
echo $"Usage: $0 {start|stop|restart|condrestart|status}" |
| 395 |
exit 2 |
| 396 |
;; |
| 397 |
esac |
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|
| 399 |
exit $RETVAL |
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