cpupower init enhanced version

etc conf.d cpupower (config)

# The CPU specific power-management-driver (e.g. powernow-k8) is necessary for cpupower to work. Don't forget to load it!

# valid governors:
#  ondemand, performance, powersave,
#  conservative, userspace
#governor="ondemand"

# limit frequency range (optional)
# valid suffixes: Hz, kHz (default), MHz, GHz, THz
#min_freq="2.25GHz"
#max_freq="3GHz"

# use freq to set up the exact cpu frequency using it with userspace governor
#freq=

### the next section is independend unlike the first one
# valid multicore scheduler:
#  0, 1, 2
#mc_scheduler=

# hyper-Threading scheduler
#smp_scheduler=

# intel only: set trade-off value for processes; for more information see: 'man cpupower-set'
#perf_bias=


# vim:set ts=2 sw=2 ft=sh et:

usr bin cpupower_init.sh (main)

#! /bin/sh

    if [[ ! -f /etc/conf.d/cpupower ]]; then
      echo "/etc/conf.d/cpupower doesn\'t exist"
      exit 1
    fi

. /etc/conf.d/cpupower

### sections independend; params='' for additional clear
# be loud; usually wanted
params=''
    if [[ "$governor" ]]; then
      grep -qw "$governor" /sys/devices/system/cpu/cpu*/cpufreq/scaling_available_governors || modprobe -q cpufreq_${governor}
      if [[ "$governor" != "userspace" ]] && [[ "$freq" ]]; then
        echo "Error: freq needs userspace governor"
        exit 1
      fi
      
      params="-g $governor "
      params+="${min_freq:+-d $min_freq} "
      params+="${max_freq:+-u $max_freq} "
      params+="${freq:+-f $freq} "
      cpupower -c all frequency-set $params > /dev/null
    else
      echo "Debug: Governor isn\'t set."
    fi

# be quiet. It is a feature of some CPUs.
params=''
    if [[ "$mc_scheduler" ]]; then
      params="-m $mc_scheduler"
      cpupower -c all set $params
    fi

# be quiet. It is a feature of some special CPUs.
params=''
    if [[ "$smt_scheduler" ]]; then
      params="-s $smt_scheduler"
      cpupower -c all set $params
    fi

# be quiet. It is a feature of some Intel CPUs.
params=''
    if [[ "$perf_bias" ]]; then
      params="-b $perf_bias"
      cpupower -c all set $params
    fi
    
exit 0