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Text File  |  2012-05-20  |  969 b   |  29 lines
  1. #! /bin/sh
  2. # 
  3. # Laptop mode tools module: Scheduler tunables for multi-socket/multi-core systems.
  4. #
  5.  
  6. if [ x$CONTROL_SCHED_MC_POWER_SAVINGS = x1 ] || [ x$ENABLE_AUTO_MODULES = x1 -a x$CONTROL_SCHED_MC_POWER_SAVINGS = xauto ]; then
  7.     if [ $ON_AC -eq 1 ]; then
  8.         log "VERBOSE" "On AC power: setting scheduler power saving to 0."
  9.         if [ -w /sys/devices/system/cpu/sched_mc_power_savings ]; then
  10.             echo 0 > /sys/devices/system/cpu/sched_mc_power_savings 
  11.             log "VERBOSE" "Scheduler power save mode disabled."
  12.         else
  13.             log "VERBOSE" "Scheduler power saving is not available."
  14.         fi
  15.     else
  16.         log "VERBOSE" "On battery: setting scheduler power saving to 1."
  17.         if [ -w /sys/devices/system/cpu/sched_mc_power_savings ]; then
  18.             echo 2 > /sys/devices/system/cpu/sched_mc_power_savings 
  19.             log "VERBOSE" "Scheduler power save mode enabled."
  20.         else
  21.             log "VERBOSE" "Scheduler power saving is not available."
  22.         fi
  23.  
  24.     fi
  25. else
  26.     log "VERBOSE" "Scheduler power setting is disabled."
  27. fi
  28.  
  29.