Subversion Repositories configs

#!/bin/sh

# the following is the LSB init header see

# http://www.linux-foundation.org/spec//booksets/LSB-Core-generic/LSB-Core-generic.html#INITSCRCOMCONV

#

### BEGIN INIT INFO

# Provides: cpuspeed

# Should-Start:

# Default-Start: 1 2 3 4 5

# Short-Description: processor frequency scaling support

# Description: This script enables/disables processor frequency

#              scaling support, either using the cpuspeed daemon

#              or in-kernel frequency scaling support

### END INIT INFO

# the following is the chkconfig init header

#

# cpuspeed: processor frequency scaling support

#

# chkconfig: 12345 13 99

# description: Run dynamic CPU speed daemon and/or load appropriate

#              cpu frequency scaling kernel modules and/or governors

#

# Source function library.

. /etc/rc.d/init.d/functions

prog="cpuspeed"

[ -f /usr/sbin/$prog ] || exit 5

# Get config.

if [ -f /etc/sysconfig/$prog ]; then

  . /etc/sysconfig/$prog

fi

cpu0freqd=/sys/devices/system/cpu/cpu0/cpufreq

globfreq='/sys/devices/system/cpu'

cpufreq="${globfreq}/cpufreq"

cpus="${globfreq}/cpu[0-9]*"

testpat="${cpus}/cpufreq/scaling_driver"

lockfile="/var/lock/subsys/$prog"

xendir="/proc/xen"

logger="/usr/bin/logger -p info -t $prog"

IGNORE_NICE=${IGNORE_NICE:-0}

module_loaded=false

some_file_exist() {

  while [ "$1" ] ; do

    [ -f "$1" ] && return 0

    shift

  done

  return 1

}

governor_is_module() {

  # Check to see if the requested cpufreq governor

  # is provided as a kernel module or not

  module_info=`/sbin/modinfo cpufreq-${governor} > /dev/null 2>&1`

  return $?

}

is_p4_clockmod() {

  if [ `/sbin/lsmod | grep -c -w "p4.clockmod"` -ge 1 -a -d "/sys/devices/system/cpu/cpu0/thermal_throttle" ]; then

    return 0

  fi

  return 1

}

governor_module_loaded() {

# Check to see if we have a module loaded for

# the current cpufreq governor

  if [ -e ${cpu0freqd}/scaling_governor ]; then

    governor=`cat ${cpu0freqd}/scaling_governor`

  else

    governor="none"

  fi

  if [ "${governor}" != "none" -a `/sbin/lsmod | grep -c -w "cpufreq.${governor}"` -ge 1 ]; then

    return 0

  fi

  return 1

}

adjust_cpufreq() {

  # First arg is a param under $cpu/cpufreq/

  # Second arg is the value you want to set that param to

  if $(echo ${1} | grep -qE '(threshold|ignore_nice_load)'); then

    [ -f $cpufreq/$1 ] && echo $2 > $cpufreq/$1

  else

    for cpu in ${cpus}; do

      [ -f $cpu/cpufreq/$1 ] && echo $2 > $cpu/cpufreq/$1

    done

  fi

}

start_cpuspeed() {

  echo -n $"Starting $prog: "

  # cpuspeed daemon thresholds are specified as idle percentages,

  # cpufreq modules as busy percentages, so we need to do some

  # math here for use of unified config...

  # DOWN_THRESHOLD doesn't mean exactly the same thing for

  # cpuspeed as it does for the cpufreq governors, but close

  # enough, and if not specified, we use same defaults as governors.

  if [ -n "$UP_THRESHOLD" ]; then

    let UP_THRESHOLD=100-$UP_THRESHOLD

  else

    UP_THRESHOLD=20

  fi

  if [ -n "$DOWN_THRESHOLD" ]; then

    let DOWN_THRESHOLD=100-$DOWN_THRESHOLD

  else

    DOWN_THRESHOLD=80

  fi

  OPTS="$OPTS -r -p $UP_THRESHOLD $DOWN_THRESHOLD"

  if [ -n "$MIN_SPEED" ]; then

    OPTS="$OPTS -m $MIN_SPEED"

  fi

  if [ -n "$MAX_SPEED" ]; then

    OPTS="$OPTS -M $MAX_SPEED"

  fi

  if [ "$IGNORE_NICE" -eq 0 ]; then

    OPTS="$OPTS -n"

  fi

  daemon $prog -d $OPTS

  RETVAL=$?

  return $RETVAL

}

stop_cpuspeed() {

  if [ -n "`pidof $prog`" ]; then

    echo -n $"Stopping $prog: "

    killproc $prog -USR1

    killproc $prog -INT

  fi

  if [ -n "`pidof $prog`" ]; then

    killproc $prog

  fi

  RETVAL=$?

  return $RETVAL

}

start() {

  if [ $(id -u) -ne 0 ]; then

    echo -n "Insufficient privileges to start cpuspeed service: "

    failure; echo

    return 4

  fi

  if [ ! -f $lockfile ] && [ ! -d "$xendir" ]; then

    cpu_vendor=$(awk '/vendor_id/{print $3}' /proc/cpuinfo | tail -n 1)

    cpu_family=$(awk '/cpu family/{print $4}' /proc/cpuinfo | tail -n 1)

    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"

      elif [ -d /proc/acpi ]; then

        /sbin/modprobe pcc-cpufreq 2> /dev/null

	if [ ! -d ${cpu0freqd} ]; then

	  /sbin/modprobe -r pcc-cpufreq 2> /dev/null

      	  if [ "$cpu_vendor" == AuthenticAMD ] && [ "$cpu_family" -ge 7 ]; then

            # Try loading powernow-k8 if this is an AMD processor,

            # family 7 or greater (Athlon XP/MP was family 6)

            pk8m=$(/sbin/modinfo powernow-k8 > /dev/null 2>&1)

            if [ "$?" -eq 0 ]; then

              /sbin/modprobe powernow-k8 2> /dev/null

              [ -d ${cpu0freqd} ] || /sbin/modprobe -r powernow-k8 2> /dev/null

            fi

	  else

            # use ACPI as a fallback

            /sbin/modprobe acpi-cpufreq 2> /dev/null

            # if even ACPI didn't work, remove it

            # and then next test will bail out.

            [ -d ${cpu0freqd} ] || /sbin/modprobe -r acpi-cpufreq 2> /dev/null

          fi

	fi

      fi

      if [ ! -d ${cpu0freqd} -a "$cpu_vendor" == GenuineIntel ]; then

        # last-ditch effort for Intel proc boxes, try our neutered p4-clockmod

        # to get at least passive cooling support (no clock changes)

        /sbin/modprobe p4-clockmod 2> /dev/null

        [ -d ${cpu0freqd} ] || /sbin/modprobe -r p4-clockmod 2> /dev/null

      fi

    fi

    # If we get this far with no driver, we must have no scaling.

    # We're doomed.

    [ ! -f ${cpu0freqd}/scaling_driver ] && return 6

    # Okay, we have a driver, carry on...

    drv=`cat ${cpu0freqd}/scaling_driver`

    # Figure out default governor to use

    case "$drv" in

      centrino|powernow-k8|pcc-cpufreq|acpi-cpufreq|e_powersaver)

        default_governor=ondemand

        ;;

      p4-clockmod)

        # not actually a governor, we want to bail without doing either

	# in-kernel scaling or starting up the cpuspeed daemon in this case

        default_governor=p4passive

        ;;

      intel_pstate)

        default_governor=powersave

        echo "CPU states managed by intel_pstate; use cpupower for configuration."

        $logger "CPU states managed by intel_pstate; use cpupower for configuration."

        ;;

      *)

        default_governor=userspace

        ;;

    esac

    governor=${GOVERNOR:-${default_governor}}

    if [ "${governor}" == "p4passive" ]; then

      echo -n "Enabling p4-clockmod driver (passive cooling only): "

      success; echo

      return 0

    fi

    # Load governor module, if need be, and validate

    governor_is_module && /sbin/modprobe cpufreq-${governor}

    if [ `grep -c -w ${governor} ${cpu0freqd}/scaling_available_governors` -ge 1 ]; then

      $logger "Enabling ${governor} cpu frequency scaling governor"

    else

      $logger "Invalid governor \"${governor}\" specified, falling back to ${default_governor}"

      governor_is_module && /sbin/modprobe -r cpufreq-${governor}

      governor=${default_governor}

      governor_is_module && /sbin/modprobe cpufreq-${governor}

    fi

    # Set governor

    adjust_cpufreq scaling_governor ${governor}

    # Run cpuspeed daemon for userspace gov, kernel ones otherwise

    if [ "${governor}" == "userspace" ]; then

      start_cpuspeed

      RETVAL=$?

    else

      if [ -n "$MIN_SPEED" ]; then

        adjust_cpufreq scaling_min_freq $MIN_SPEED

      else

        adjust_cpufreq scaling_min_freq 0

      fi

      if [ -n "$MAX_SPEED" ]; then

        adjust_cpufreq scaling_max_freq $MAX_SPEED

      else

        adjust_cpufreq scaling_max_freq `cat $cpu0freqd/cpuinfo_max_freq`

      fi

      if [ -n "$UP_THRESHOLD" -a ${governor} == "ondemand" ]; then

        adjust_cpufreq ondemand/up_threshold $UP_THRESHOLD

      fi

      if [ -n "$DOWN_THRESHOLD" -a ${governor} == "conservative" ]; then

        adjust_cpufreq conservative/down_threshold $DOWN_THRESHOLD

      fi

      if [ "$IGNORE_NICE" -eq 1 -a ${governor} == "ondemand" -o ${governor} == "conservative" ]; then

        adjust_cpufreq ${governor}/ignore_nice_load $IGNORE_NICE

      fi

      echo -n "Enabling ${governor} cpu frequency scaling: "

      success

      RETVAL=0

    fi

    echo

    # Technically, not quite right in non-cpuspeed daemon

    # cases, but close enough to indicate that we're

    # doing some sort of cpu frequency scaling.

    [ $RETVAL = 0 ] && touch $lockfile

  else

    if [ -d "$xendir" ]; then

      $logger "CPU Frequency scaling is currently not supported on xen kernels"

    fi

    return 0

  fi

  return $RETVAL

}

stop() {

  if [ $(id -u) -ne 0 ]; then

    echo -n "Insufficient privileges to stop cpuspeed service: "

    failure; echo

    return 4

  fi

  is_p4_clockmod && p4status="true"

  if [ "$p4status" == "true" -a "x${GOVERNOR}" == "x" ]; then

    echo "p4-clockmod passive cooling support cannot be truly stopped"

  fi

  [ ! -f ${cpu0freqd}/scaling_driver ] && return 0

  drv=`cat ${cpu0freqd}/scaling_driver`

  governor_module_loaded && module_loaded=true

  if [ "${drv}" != "intel_pstate" -a "${governor}" != "userspace" ] ||

      [ "${drv}" == "intel_pstate" -a "${governor}" != "powersave" ]; then

    echo -n "Disabling ${governor} cpu frequency scaling: "

    $logger "Disabling ${governor} cpu frequency scaling governor"

    for cpu in ${cpus}; do

      if [ "${drv}" == "intel_pstate" ]; then

        echo powersave > $cpu/cpufreq/scaling_governor

      else

        echo userspace > $cpu/cpufreq/scaling_governor

        cat $cpu/cpufreq/cpuinfo_max_freq > $cpu/cpufreq/scaling_setspeed

      fi

    done

    if [ $module_loaded == true ]; then

      /sbin/modprobe -r cpufreq-${governor}

    fi

    success

    RETVAL=0

  else

    stop_cpuspeed

    RETVAL=$?

  fi

  echo

  [ -n "$DRIVER" ] && /sbin/modprobe -r $DRIVER

  [ $RETVAL = 0 ] && RETVAL=$?

  [ $RETVAL = 0 ] && rm -f $lockfile

  return $RETVAL

}

reload() {

  if [ $(id -u) -ne 0 ]; then

    echo -n "Insufficient privileges to stop cpuspeed service: "

    failure; echo

    return 4

  fi

  governor_module_loaded && module_loaded=true

  if [ "${governor}" == "userspace" ]; then

    failure; echo

    return 3

  else

    if [ -n "$MIN_SPEED" ]; then

      adjust_cpufreq scaling_min_freq $MIN_SPEED

    fi

    if [ -n "$MAX_SPEED" ]; then

      adjust_cpufreq scaling_max_freq $MAX_SPEED

    fi

    if [ -n "$UP_THRESHOLD" -a ${governor} == "ondemand" ]; then

      adjust_cpufreq ondemand/up_threshold $UP_THRESHOLD

    fi

    if [ -n "$DOWN_THRESHOLD" -a ${governor} == "conservative" ]; then

      adjust_cpufreq conservative/down_threshold $DOWN_THRESHOLD

    fi

    if [ "$IGNORE_NICE" -eq 1 -a ${governor} == "ondemand" -o ${governor} == "conservative" ]; then

      adjust_cpufreq ${governor}/ignore_nice_load $IGNORE_NICE

    fi

    echo -n "Reloading configuration for ${governor}: "

    success; echo

    return 0

  fi

}

case "$1" in

  start)

    start

    ;;

  stop)

    stop

    ;;

  status)

    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