src/initscripts/init.d/cpufreq

   1 #!/bin/sh
   2 ########################################################################
   3 # Begin $rc_base/init.d/cpufreq
   4 #
   5 # Description : Initalisize and startup cpufreq and set a governor
   6 #
   7 # Authors     : Arne Fitzenreiter - arne_f@ipfire.org
   8 #
   9 # Version     : 01.00
  10 #
  11 # Notes       :
  12 #
  13 ########################################################################
  14
  15 . /etc/sysconfig/rc
  16 . ${rc_functions}
  17
  18 case "${1}" in
  19         start)
  20                 boot_mesg -n "Starting cpufreq... "
  21
  22                 # try cpufreq hardware depend modules
  23                 for i in $(find /lib/modules/$(uname -r)/kernel/arch/x86/kernel/cpu/cpufreq \
  24                            ! -name speedstep-lib.ko | sort -d -r); do
  25                         module=$(basename $i | cut -d. -f1);
  26                         modprobe $module > /dev/null 2>&1;
  27                         if [ ${?} = 0 ]; then
  28                             boot_mesg -n "$SUCCESS$module$NORMAL "
  29                         fi
  30                 done
  31                 boot_mesg ""
  32
  33                 # load cqufreq governors
  34                 modprobe cpufreq_conservative
  35                 modprobe cpufreq_ondemand
  36                 modprobe cpufreq_powersave
  37                 modprobe cpufreq_userspace
  38
  39                 CPUCOUNT=`ls /sys/devices/system/cpu/cpu*/cpufreq/affected_cpus 2> /dev/null | wc -l `;
  40                 let CPUCOUNT-=1
  41                 # Set the governor to ondemand to test if it works
  42                 cpufreq-set -g ondemand
  43                 if [ ${?} = 0 ]; then
  44                     # activate cpufreq collectd module
  45                     sed -i -e "s|^#LoadPlugin cpufreq|LoadPlugin cpufreq|g" /etc/collectd.conf
  46
  47                     # Set the governor to ondemand for all cpus
  48                     for i in `seq 0 $CPUCOUNT`;
  49                     do
  50                         cpufreq-set -c $i -g ondemand
  51                     done
  52                     echo_ok;
  53                 else
  54                     echo_failure;
  55                 fi
  56                 exit 0;
  57                 ;;
  58         *)
  59                 echo "Usage: ${0} {start}"
  60                 exit 1
  61                 ;;
  62 esac
  63
  64 # End $rc_base/init.d/cpufreq
  65
  66