add undervolt
git-svn-id: https://svn.disconnected-by-peer.at/svn/linamh/trunk/linamh@1543 6952d904-891a-0410-993b-d76249ca496b
This commit is contained in:
geos_one
parent
d26bd1d18f
commit
90e8adfb27
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AUX functions.bash 3234 RMD160 e360fbe368c897677bce7dc656acd434afc032df SHA1 59bcc66163b9717f5a56e12a9c53b9af552ff5f0 SHA256 233ec1f391dabc2def1d2838f450c6ba4a5846d2d7beb92dd5bade21b35dd15b
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AUX linux-phc-optimize.bash 4596 RMD160 10bda6d0fe9209b6c0639a2a74ca734a2b6197c8 SHA1 94c281b6218433c331ae19eaace25b6283ab6c47 SHA256 88ee7ba18669960e1497605334ec26748f98360c7c9f6bd05dcc4a1929f2a303
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AUX undervolt.confd 1054 RMD160 5dd92c3c45d1192898ef996a85bb1f094b5c7a0b SHA1 b64a650a3dcb1e43de35db3a6902c77cb797eb03 SHA256 a0921aa0471832c4d3d538de00505a6ab93a1794c7c2df48ed027725d5faf81d
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AUX undervolt.initd 2808 RMD160 647be5efd98a241023da1eb585fed03fabd2d473 SHA1 9a4c27add2d9dc1ecab2f9be5189084e0376789e SHA256 6fca74f1177db0ccf92889e87401ce3e10cde46e6f15b1151dd2be65b361d5ef
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EBUILD undervolt-1.ebuild 726 RMD160 0f10c715c95ef64f4ecc867f1c75fc8439cca08a SHA1 7441fcd7b4ce0838c9276b56fda4674689fa47b7 SHA256 a1a4bba1c40ef8cd9b9ed4173d131152963565eac24779acc7d53c890d5cd9f8
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#!/bin/bash
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# This file contains script functions to help modifying files.
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# confirm_append Appends to the end of the file
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# confirm_replace Locates a line and replaces a substring
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#
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# The functions are controlled through variables:
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# file="/path/to/edited/file"
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# pattern="installed" Will skip if pattern matches. Leave empty to disable.
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#
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# confirm_append:
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# append="String to be appended.\n - Here's another line"
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#
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# confirm_replace:
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# line="Line search pattern"
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# search="String search pattern"
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# replace="Replace matched substring with this"
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# Text Colors:
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esc="\033["
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tc000="${esc}30m"
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tcf00="${esc}31m"
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tc0f0="${esc}32m"
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tcff0="${esc}33m"
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tc00f="${esc}34m"
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tcf0f="${esc}35m"
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tc0ff="${esc}36m"
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tcfff="${esc}37m"
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tcRst="${esc}0m"
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# Background Colors:
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bc000="${esc}40m"
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bcf00="${esc}41m"
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bc0f0="${esc}42m"
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bcff0="${esc}43m"
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bc00f="${esc}44m"
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bcf0f="${esc}45m"
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bc0ff="${esc}46m"
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bcfff="${esc}47m"
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check () {
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s=$?
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if [ "$s" = "0" ]; then
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printf "$tc0f0> Success!$tcRst\n"
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else
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printf "$tcf00> PhaiL!!!$tcRst\n$tcff0> Smash your head on keyboard to continue.$tcRst\n"
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read -n 1 -s > /dev/null
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fi
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return $s
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}
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confirm () {
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loop=1
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while [ "$loop" = "1" ]; do
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printf "Do you want to continue? [Y/n/?] "
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read -n 1 -s answer
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case "$answer" in
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"Y" | "y" | "" )
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printf "${tc0f0}Yes$tcRst\n"
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loop=0
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return 0
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;;
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"?" )
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printf "${tc00f}?$tcRst\nIt's really just a ${tc0f0}Yes$tcRst or ${tcf00}No$tcRst >:-[\n"
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;;
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"N" | "n" )
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printf "${tcf00}No$tcRst\n"
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loop=0
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return 1
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;;
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* )
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printf "${tcff0}$answer$tcRst\n"
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;;
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esac
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done
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}
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confirm_section () {
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confirm || {
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printf "$tc00f> Skipping entire section.$tcRst\n"
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exit 1
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}
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}
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backup () {
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printf "Creating backup ${file}~\n"
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cp -a "$file" "${file}~"
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check
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return $?
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}
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file_check () {
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s=0
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if [[ "$create" && ! -f "$file" ]]; then
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create=
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printf " Create $file\n"
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printf "$content" | tee "$file"
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check || return $?
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s=1
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fi
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if [[ "$owner" && "`stat -c %U:%G \"$file\"`" != "$owner" ]]; then
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printf " Change ownsership of $file\n"
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chown "$owner" "$file"
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check || return $?
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s=1
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fi
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if [[ "$perm" && "`stat -c %a \"$file\"`" != "$perm" ]]; then
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printf " Change permissions of $file\n"
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chmod "$perm" "$file"
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check || return $?
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s=1
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fi
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if [ "$s" = "0" ]; then
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printf "${tc00f}> SKIPPED:$tcRst Already applied\n"
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fi
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return 0
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}
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pattern_count () {
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awk "/$pattern/{n++}; END {print n+0}" "$file"
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}
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line_count () {
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awk "/$line/{n++}; END {print n+0}" "$file"
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}
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pattern_confirm () {
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if [ ! -f "$file" ]; then
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printf "${tcff0}> WARNING:$tcRst Could not find $file\n"
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return 1
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fi
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if [[ ( "$pattern" && "`pattern_count`" -gt "0" ) || ( ! "$pattern" && "`line_count`" = "0" ) ]]; then
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printf "${tc00f}> SKIPPED:$tcRst Already applied\n"
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return 1
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fi
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return 0
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}
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append () {
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printf "Appending to $file\n"
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printf "$append" | tee -a "$file" > /dev/null
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check
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return $?
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}
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replace () {
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printf "Scanning $file\n"
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result="`awk \"/$line/{sub(/$search/, \\\"$replace\\\")}; {print}\" \"${file}\"`"
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check && {
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printf "Writing $file\n"
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printf "$result" | tee "$file" > /dev/null
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}
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check
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return $?
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}
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confirm_append () {
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pattern_confirm && confirm && append
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return $?
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}
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confirm_replace () {
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pattern_confirm && confirm && replace
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return $?
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}
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#!/bin/bash
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. /usr/share/undervolt/functions.bash || {
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printf "ERROR: Could not load functions.bash\n"
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exit 1
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}
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# http://phc.athousandnights.de/
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printf "\n I assume you have linux-phc correctly installed and working.
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This script will optimize your voltages at every speed setting by
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systematically lowering them while stressing the CPU.
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Each voltage will be turned down until your system crashes, and the final
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setting for that voltage will be 2 VIDs above that to \"ensure\" stability.
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WARNING:
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This script will crash your system as many times as there are VIDs to tweak.
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You might destroy your hardware, break laws and/or die in vain if you continue.\n\n"
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confirm || exit 0
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cpufreq=/sys/devices/system/cpu/cpu0/cpufreq
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phc_vids=$cpufreq/phc_vids
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printf "\n\nWill use current directory to store/retrieve test results.\n"
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printf "\nRead phc_default_vids:\n"
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cat $cpufreq/phc_default_vids > /dev/null
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check || exit 1
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def_vids=`cat $cpufreq/phc_default_vids`
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if [ -f phc_tweaked_vids ]; then
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printf "\nLoad VIDs from 'phc_tweaked_vids'\n"
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cur_vids=`cat phc_tweaked_vids`
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else
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printf "\nRead default VIDs.\n"
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cur_vids="$def_vids"
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fi
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count_phc=`printf "$def_vids" | awk '{print NF}'`
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count_tweak=`printf "$cur_vids" | awk '{printf NF}'`
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if [ "$count_phc" != "$count_tweak" ]; then
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printf "$tcf00> ERROR:$tcRst Wrong VID count!\n"
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exit 1
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fi
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let count_phc--
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check || {
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printf "$tcf00> ERROR:$tcRst Number of VIDs is zero!\n"
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exit 1
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}
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if [[ -f phc_tweaked_vids && -f phc_cur_pos ]]; then
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printf "Load position from 'phc_cur_pos'\n"
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cur_pos=`cat phc_cur_pos`
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let ++cur_pos
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check || exit 1
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else
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printf "Reset position to 0.\n"
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cur_pos=0
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fi
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printf "Read available frequencies.\n"
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freqs=`cat $cpufreq/scaling_available_frequencies`
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c=0
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for i in $freqs; do
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let c++
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freq[c]=$i
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done
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if [ "$c" != "$count_tweak" ]; then
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printf "$tcf00> ERROR:$tcRst Number of frequencies ($c) and VIDs ($count_tweak) do not match!\n"
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exit 1
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fi
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check
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#printf "$cur_vids" | awk '{for (i=1; i<=NF; i++) print $i}'
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c=0
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for i in $cur_vids; do
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let c++
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vid[c]=$i
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if [ "$c" -lt "$cur_pos" ]; then
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vids_done="$vids_done$i "
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fi
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if [ "$c" = "$cur_pos" ]; then
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printf "\nLast VID: $i\n"
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let vid[c]+=2
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if [ "${vid[$c]}" -gt "${vid[$(( $c - 1 ))]}" ]; then
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printf "Replace with VID from previous position.\n"
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let vid[c]=vid[c-1]
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else
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printf "Increase by +2\n"
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fi
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vid_last="${vid[c]} "
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fi
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if [ "$(( c - 1 ))" = "$cur_pos" ]; then
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vid_next="$i"
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else if [ "$c" -gt "$cur_pos" ]; then
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vids_rem="$vids_rem $i"
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fi
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fi
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done
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printf "\nDefault VIDs: $def_vids
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Current VIDs: $tc0f0$vids_done$tcf00$vid_last$tcff0$vid_next$tcRst$vids_rem\n"
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printf "$vids_done$vid_last$vid_next$vids_rem" > phc_tweaked_vids
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printf "$cur_pos" > phc_cur_pos
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if [ "$cur_pos" -gt "$count_phc" ]; then
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printf "\nAll VIDs have been tweaked!
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Results are in the file 'phc_tweaked_vids' - use with care.\n"
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printf "\nAll done! - Have a nice day.\n"
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exit 0
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fi
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if [ "x$vid_last" != "x" ]; then
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if [ "$vid_next" -gt "${vid[$cur_pos]}" ]; then
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printf "\nNext VID higher than last - copying."
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vid[$(( cur_pos + 1 ))]=${vid[$cur_pos]}
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fi
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fi
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let ++cur_pos
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printf "\nSwitch to 'userspace' scaling governor.\n"
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printf "userspace" | tee $cpufreq/scaling_governor > /dev/null
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check || exit 1
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printf "Set frequency to ${freq[$cur_pos]}.\n"
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printf "${freq[$cur_pos]}" | tee $cpufreq/scaling_setspeed > /dev/null
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check || exit 1
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printf "Run burnMMX.\n"
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grep [b]urnMMX > /dev/null && printf "...already running.\n" || burnMMX &
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printf " PID: $!\n"
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recover () {
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printf "\n\nRecovering CPU.\n"
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printf "$vids_done$vid_last$((${vid[$cur_pos]} + 2))$vids_rem" | tee $cpufreq/phc_vids > /dev/null
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printf "ondemand" | tee $cpufreq/scaling_governor > /dev/null
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pkill burnMMX
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printf "\nRun this script again to continue the optimization.\n"
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}
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printf "\n-----\nStart testing.\n"
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confirm || {
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recover
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exit 1
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}
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while [[ 1 ]]; do
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let vid[cur_pos]--
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printf "\nDefault VIDs: $def_vids
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Current VIDs: $tc0f0$vids_done$tc0f0$vid_last$tcf00${vid[$cur_pos]}$tcRst$vids_rem
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Testing VID: ${vid[$cur_pos]} ($(( ${vid[$cur_pos]} * 16 + 700)) mV)\n"
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printf "$vids_done$vid_last${vid[$cur_pos]}$vids_rem" > phc_tweaked_vids
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sync
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if [ "${vid[$cur_pos]}" -lt "0" ]; then
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printf "\n\nThe lowest acceptable VID is 0."
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recover
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exit 0
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fi
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printf "$vids_done$vid_last${vid[$cur_pos]}$vids_rem" | tee $cpufreq/phc_vids > /dev/null
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c=0
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while [ "$c" -lt "30" ]; do
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ps aux | grep [b]urnMMX > /dev/null || {
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printf "\nburnMMX crashed!"
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recover
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exit 0
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}
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printf "."
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sleep 0.5
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let c++
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done
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done
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@ -0,0 +1,22 @@
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# Path to the voltage table sysfs interface file
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# The init script will detect which one of the 2 below file exists and use the correspond table
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VTABLE_PATH_0_2_X="/sys/devices/system/cpu/cpu0/cpufreq/op_points_table"
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VTABLE_PATH_0_3_X="/sys/devices/system/cpu/cpu0/cpufreq/phc_controls"
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# Switch back to DEFAULT_VTABLE if undervoltage is stopped? [yes/no]
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SWITCH_BACK="no"
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# Default voltages that will be restored at shutdown if SWITCH_BACK=yes
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# Linux PHC 0.2.x uses a table of Frequency:Voltage pairs
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# Linux PHC 0.3.x uses a table of FID:VID pairs
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#DEFAULT_VTABLE_0_2_X="798000:988,1064000:1116,1330000:1244,1596000:1356"
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#DEFAULT_VTABLE_0_3_X="12:16 10:10 8:4 6:0"
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# Custom voltages that will be applied at boot time
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#CUSTOM_VTABLE_0_2_X="600000:700,800000:764,1000000:860,12000000:956"
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#CUSTOM_VTABLE_0_3_X="12:16 10:10 8:4 6:0"
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# Set the following to "yes" when the all the settings are configured
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# This is a safety to disable setting the voltages with the default
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# values of this file that are probably wrong for your CPU
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IS_CONFIGURED="no"
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@ -0,0 +1,113 @@
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#!/sbin/runscript
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# Copyright 1999-2005 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# $Header: $
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CUSTOM_VTABLE=" "
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DEFAULT_VTABLE=" "
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VTABLE_PATH=" "
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depend()
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{
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need localmount
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need logger
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}
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do_error()
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{
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# Display an error
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# $1: Error message
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eerror $1
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eerror "see http://gentoo-wiki.com/HOWTO_Undervolt_a_Pentium_M_CPU for further information"
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eend 1
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||||
}
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||||
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||||
sysfs_check()
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{
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# Check that the sysfs interface exists
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||||
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if [ -e ${VTABLE_PATH_0_3_X} ]; then
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VTABLE_PATH="${VTABLE_PATH_0_3_X}"
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CUSTOM_VTABLE="${CUSTOM_VTABLE_0_3_X}"
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DEFAULT_VTABLE="${DEFAULT_VTABLE_0_3_X}"
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return 0
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else
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if [ -e ${VTABLE_PATH_0_2_X} ]; then
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VTABLE_PATH="${VTABLE_PATH_0_2_X}"
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CUSTOM_VTABLE="${CUSTOM_VTABLE_0_2_X}"
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DEFAULT_VTABLE="${DEFAULT_VTABLE_0_2_X}"
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return 0
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else
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logger "Undervolt: SysFs table not found. Can't modify CPU voltages."
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eerror "SysFs voltage_table not found. Can't modify CPU voltage table."
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eerror "It seems that the undervolting patch has not been applied to the kernel"
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do_error "or that the file /etc/conf.d/undervolt is not correctly configured."
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||||
return 1
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||||
fi
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||||
fi
|
||||
}
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||||
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||||
einfo_tables()
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||||
{
|
||||
# display current table and a custom table
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||||
# $1 : custom table to display
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||||
|
||||
# Display the voltage table currently used by the CPU
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||||
einfo "Current table: "`cat ${VTABLE_PATH} `
|
||||
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||||
# Display the custom voltage table
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||||
einfo "Configured table: ${1}"
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||||
}
|
||||
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||||
set_custom_table()
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||||
{
|
||||
# Set a custom table through the sysfs interface
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||||
# $1 : custom table to set
|
||||
|
||||
# Display current table and custom table that will be set
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||||
einfo_tables "${1}"
|
||||
|
||||
# Write the custom voltage to the SysFS interface and display the
|
||||
# new voltage table that is now used by the CPU if there is no error
|
||||
echo "${1}" > ${VTABLE_PATH} && \
|
||||
einfo "Applied table: "`cat ${VTABLE_PATH}`
|
||||
|
||||
return $?
|
||||
}
|
||||
|
||||
start()
|
||||
{
|
||||
ebegin "Changing CPU voltages table"
|
||||
|
||||
if [ "$IS_CONFIGURED" = "yes" ]; then
|
||||
sysfs_check || return 1
|
||||
|
||||
set_custom_table "${CUSTOM_VTABLE}"
|
||||
eend $?
|
||||
else
|
||||
do_error "Custom voltage table is not configured. Check the file /etc/conf.d/undervolt"
|
||||
fi
|
||||
}
|
||||
|
||||
# I think it is not necessary to switch to the default voltage table on shutdown
|
||||
# But this init script provides that feature in case you don't agree.
|
||||
stop()
|
||||
{
|
||||
if [ "$SWITCH_BACK" = "yes" ]; then
|
||||
if [ "$IS_CONFIGURED" = "yes" ]; then
|
||||
ebegin "Switching back to default CPU voltage table"
|
||||
|
||||
sysfs_check || return 1
|
||||
|
||||
set_custom_table "${DEFAULT_VTABLE}"
|
||||
eend $?
|
||||
else
|
||||
do_error "Default voltage table is not configured. Check the file /etc/conf.d/undervolt"
|
||||
fi
|
||||
else
|
||||
ebegin "Not switching back to default CPU voltage table (disabled in configuration)"
|
||||
eend 0
|
||||
fi
|
||||
}
|
||||
|
|
@ -0,0 +1,29 @@
|
|||
# Copyright 1999-2009 Gentoo Foundation
|
||||
# Distributed under the terms of the GNU General Public License v2
|
||||
# $Header: $
|
||||
|
||||
EAPI="2"
|
||||
|
||||
inherit eutils
|
||||
|
||||
DESCRIPTION="A collection of undervolt scripts"
|
||||
HOMEPAGE="http://www.linux-phc.org/forum/viewtopic.php?f=19&t=44 http://www.s3pp.de/misc/linux-phc-optimize.bash"
|
||||
# SRC_URI="mirror://sourceforge/${PN}/${PF}.tar.gz"
|
||||
|
||||
LICENSE="GPL-2"
|
||||
SLOT="0"
|
||||
KEYWORDS="~amd64 ~x86"
|
||||
IUSE=""
|
||||
|
||||
DEPEND=""
|
||||
RDEPEND="app-benchmarks/cpuburn"
|
||||
|
||||
src_compile() { :; }
|
||||
|
||||
src_install() {
|
||||
newinitd ${FILESDIR}/undervolt.initd undervolt
|
||||
newconfd ${FILESDIR}/undervolt.confd undervolt
|
||||
insinto /usr/share/undervolt
|
||||
doins ${FILESDIR}/functions.bash
|
||||
newbin ${FILESDIR}/linux-phc-optimize.bash undervolt-optimize
|
||||
}
|
||||
Loading…
Reference in New Issue