400 lines
12 KiB
Plaintext
400 lines
12 KiB
Plaintext
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#!/bin/sh
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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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# 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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# Source function library.
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. /etc/rc.d/init.d/functions
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prog="cpuspeed"
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[ -f /usr/sbin/$prog ] || exit 5
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# Get config.
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if [ -f /etc/sysconfig/$prog ]; then
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. /etc/sysconfig/$prog
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fi
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cpu0freqd=/sys/devices/system/cpu/cpu0/cpufreq
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globfreq='/sys/devices/system/cpu'
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cpufreq="${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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some_file_exist() {
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while [ "$1" ] ; do
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[ -f "$1" ] && return 0
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shift
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done
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return 1
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}
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governor_is_module() {
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# Check to see if the requested cpufreq governor
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# is provided as a kernel module or not
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module_info=`/sbin/modinfo cpufreq-${governor} > /dev/null 2>&1`
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return $?
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}
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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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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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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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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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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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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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# 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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# Okay, we have a driver, carry on...
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drv=`cat ${cpu0freqd}/scaling_driver`
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# Figure out default governor to use
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case "$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:-${default_governor}}
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if [ "${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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# 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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# Set governor
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adjust_cpufreq scaling_governor ${governor}
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# Run cpuspeed daemon for userspace gov, kernel ones otherwise
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if [ "${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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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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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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case "$1" in
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start)
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start
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;;
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stop)
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stop
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;;
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status)
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is_p4_clockmod && p4status="true"
|
||
|
|
if [ "$p4status" == "true" -a "x${GOVERNOR}" == "x" ]; then
|
||
|
|
echo "p4-clockmod passive cooling is enabled"
|
||
|
|
exit 0
|
||
|
|
fi
|
||
|
|
governor_module_loaded && module_loaded=true
|
||
|
|
if [ -d "$xendir" ]; then
|
||
|
|
echo "Frequency scaling not supported under xen kernels"
|
||
|
|
RETVAL=0
|
||
|
|
elif [ $module_loaded == true -o ${governor} == "performance" ]; then
|
||
|
|
echo "Frequency scaling enabled using ${governor} governor"
|
||
|
|
RETVAL=0
|
||
|
|
else
|
||
|
|
status $prog
|
||
|
|
RETVAL="$?"
|
||
|
|
fi
|
||
|
|
;;
|
||
|
|
|
||
|
|
restart|force-reload)
|
||
|
|
stop
|
||
|
|
start
|
||
|
|
;;
|
||
|
|
|
||
|
|
reload)
|
||
|
|
reload
|
||
|
|
;;
|
||
|
|
|
||
|
|
condrestart|try-restart)
|
||
|
|
governor_module_loaded && module_loaded=true
|
||
|
|
if [ $module_loaded == true -o -n "`pidof $prog`" -o ${governor} == "performance" ]; then
|
||
|
|
stop
|
||
|
|
start
|
||
|
|
fi
|
||
|
|
;;
|
||
|
|
|
||
|
|
*)
|
||
|
|
echo $"Usage: $0 {start|stop|restart|condrestart|status}"
|
||
|
|
exit 2
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
|
||
|
|
exit $RETVAL
|