- if [[ `grep -c processor /proc/cpuinfo` -gt 1 ]] ; then
- einfo "Detecting CPU:"
- CPU=$(awk -F: '/^processor/{printf " Processor"$2" is"};/^model name/{printf $2};/^vendor_id/{printf vendor};/^cpu MHz/{printf " %dMHz",int($2)};/^cache size/{printf ","$2" Cache"};/^$/{print ""}' /proc/cpuinfo 2>>$DEBUG)
- echo $CPU | sed 's/ \{1,\}/ /g'
- eend 0
- else
- einfo "Detecting CPU: `awk -F: '/^processor/{printf " Processor"$2" is"};/^model name/{printf $2};/^vendor_id/{printf vendor};/^cpu MHz/{printf " %dMHz",int($2)};/^cache size/{printf ","$2" Cache"};/^$/{print ""}' /proc/cpuinfo 2>>$DEBUG` " ; eend 0
- fi
-
- # Disclaimer: sorry for the tons of if/then/else... but this makes sure we use:
- # * it only if we have the according kernel modules available
- # * cpufreq not inside Virtual Box
- # * current version of /etc/init.d/loadcpufreq from Debian (to stay in sync)
- # -> parse output of the initscript and output it according to our look'n'feel
- # * our own cpufreq-detect.sh if /etc/init.d/loadcpufreq isn't present
- if ! cpufreq_check ; then
- ewarn "Skipping cpufreq setup as module dependencies are not fulfilled." ; eend 1
- else
- # Virtual Box supports ACPI and laptop-detect would return with '0', so check for it:
- if [ -r /proc/acpi/battery/BAT0/info ] ; then
- if grep -q 'OEM info: innotek' /proc/acpi/battery/BAT0/info ; then
- einfo 'Virtual Box detected, skipping cpufreq setup.' ; eend 0
- return 0
- fi
- fi
- einfo "Trying to set up cpu frequency scaling:"
- eindent
- if [ -x /etc/init.d/loadcpufreq ] ; then
- SKIP_CPU_GOVERNOR=''
- LOADCPUFREQ=$(mktemp)
- /etc/init.d/loadcpufreq start >"$LOADCPUFREQ" 2>&1 ; RC=$?
- if grep -q FATAL "$LOADCPUFREQ" ; then
- eindent
- SKIP_CPU_GOVERNOR=1
- oldIFS="$IFS"
- IFS="
-"
- for line in $(grep FATAL "$LOADCPUFREQ" | sed 's/.*FATAL: //; s/ (.*)//') ; do
- eerror "$line" ; eend $RC
- done
- IFS="$oldIFS"
- eoutdent
- elif grep -q done "$LOADCPUFREQ" ; then
- MODULE=$(grep done "$LOADCPUFREQ" | sed 's/.*done (\(.*\))./\1/')
- if [ -n "$MODULE" -a "$MODULE" != none ]; then
- einfo "Loading cpufreq kernel module $MODULE" ; eend 0
- else
- ewarn "Could not find an appropriate kernel module for cpu frequency scaling." ; eend 1
- fi
- fi
- rm -f $LOADCPUFREQ
- elif [ -r /usr/bin/cpufreq-detect.sh ] ; then
- . /usr/bin/cpufreq-detect.sh
- if [ -n "$MODULE" -a "$MODULE" != none ]; then
- einfo "Loading modules ${MODULE}"
- modprobe "$MODULE" >>$DEBUG || modprobe "$MODULE_FALLBACK" >>$DEBUG
- RC=$?
- if [[ "$RC" == 0 ]]; then
- eend 0
- else
- SKIP_CPU_GOVERNOR=1
- eend $RC
- fi
- else
- ewarn "Could not detect an appropriate CPU for use with cpu frequency scaling - skipping."
- eend 1
- fi # $MODULE
- fi # loadcpufreq
-
- if [ -z "$SKIP_CPU_GOVERNOR" ] ; then
- einfo "Loading cpufreq_ondemand, setting ondemand governor"
- RC=0
- if modprobe cpufreq_ondemand ; RC=$? ; then
- for file in $(find /sys/devices/system/cpu/ -name scaling_governor 2>/dev/null) ; do
- echo ondemand > $file
- done
- fi
- eend $RC
- fi # cpu-governor