src/initscripts/packages/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     : 01.01
  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/drivers/cpufreq \
  24                            ! -name speedstep-lib.ko ! -name p4-clockmod.ko ! -name "cpufreq_*" ! -name mperf.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                 driver=`cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver 2>/dev/null`
  40
  41                 case "$driver" in
  42                     intel_pstate)
  43                         # pstate use internal gov so skip this setting
  44                         echo_ok;
  45                         ;;
  46                     *)
  47                         CPUCOUNT=`ls /sys/devices/system/cpu/cpu*/cpufreq/affected_cpus 2> /dev/null | wc -l `;
  48                         let CPUCOUNT-=1
  49                         # Set the governor to ondemand to test if it works
  50                         cpufreq-set -g ondemand
  51                         if [ ${?} = 0 ]; then
  52                                 # Set the governor to ondemand for all cpus
  53                                 for i in `seq 0 $CPUCOUNT`;
  54                                 do
  55                                         cpufreq-set -c $i -g ondemand
  56                                 done
  57                                 echo_ok;
  58                         else
  59                                 echo_failure;
  60                         fi
  61                         ;;
  62                     esac
  63                 exit 0;
  64                 ;;
  65         *)
  66                 echo "Usage: ${0} {start}"
  67                 exit 1
  68                 ;;
  69 esac
  70
  71 # End $rc_base/init.d/cpufreq
  72
  73