| #!/bin/bash |
| |
| # Cycle the CPUs through various frequencies. |
| |
| # Copyright (C) 2003-2006 IBM |
| # |
| # This program is free software; you can redistribute it and/or |
| # modify it under the terms of the GNU General Public License as |
| # published by the Free Software Foundation; either version 2 of the |
| # License, or (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, but |
| # WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| # General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program; if not, write to the Free Software |
| # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA |
| # 02111-1307, USA. |
| |
| |
| # Do any CPU support cpufreq? |
| #CPUFREQ_ENABLED_CPUS=`/bin/ls -lad /sys/devices/system/cpu/cpu*/cpufreq 2> /dev/null | wc -l` |
| |
| #if [ "$CPUFREQ_ENABLED_CPUS" -lt 1 ]; then |
| # echo "None of your CPUs support cpufreq. Bye." |
| # exit 255 |
| #fi |
| |
| # Turn on acpi_pstate_strict to ensure that state transitions actually happen... |
| if [ -f /sys/module/acpi_cpufreq/parameters/acpi_pstate_strict ]; then |
| echo 1 > /sys/module/acpi_cpufreq/parameters/acpi_pstate_strict |
| fi |
| if [ -f /sys/module/acpi/parameters/acpi_pstate_strict ]; then |
| echo 1 > /sys/module/acpi/parameters/acpi_pstate_strict |
| fi |
| |
| # First, knock off any powersaving daemons... |
| for i in `ls /etc/init.d/*powernow /etc/init.d/*cpuspeed* /etc/init.d/*powersave* 2> /dev/null`; do |
| "$i" stop |
| done |
| |
| # Ensure that we have the userspace governor running |
| for i in /sys/devices/system/cpu/cpu*; do |
| echo userspace > "$i/cpufreq/scaling_governor" |
| done |
| |
| # Trap ^C |
| trap 'kill -9 `pgrep -P $$` `pgrep cpufreq.bin` 2> /dev/null; exit 0' 1 2 15 |
| |
| # Did we see any failures? |
| LOGFILE=/proc/$$/fd/1 |
| OLD_ERRORS=`egrep -ic "(error|fail|invalid|denied|cannot)" $LOGFILE` |
| |
| # For all CPUs with cpufreq: remove CPUs that are locked with another. |
| function find_cpufreq_cpus() { |
| for cpu in `ls -d /sys/devices/system/cpu/cpu*/cpufreq 2> /dev/null`; do |
| # Locked CPUs are done with symlinks in 2.6.14. |
| if [ -L "$cpu" ]; then |
| continue; |
| fi |
| |
| CPU_NUM=`dirname $cpu | sed -e 's/.*cpu//g'` |
| MATCHES=`(cat /sys/devices/system/cpu/cpu*/cpufreq/affected_cpus /dev/null 2> /dev/null | while read car cdr; do echo $cdr; done) | grep "^$CPU_NUM$" -c` |
| if [ $MATCHES -eq 0 ]; then |
| echo $CPU_NUM |
| fi |
| done |
| } |
| |
| # Find the frequencies for a given CPU |
| function find_cpu_frequencies() { |
| i="/sys/devices/system/cpu/cpu$1" |
| |
| if [ -f "$i/cpufreq/scaling_available_frequencies" ]; then |
| cat "$i/cpufreq/scaling_available_frequencies" |
| else |
| cat "$i/cpufreq/scaling_min_freq" "$i/cpufreq/scaling_max_freq" |
| fi |
| } |
| |
| # Figure out which CPUs have cpufreq support. |
| find_cpufreq_cpus | while read f; do |
| echo Starting CPU frequency testing on CPU $f |
| i=/sys/devices/system/cpu/cpu$f |
| |
| # Does this CPU have cpufreq? |
| if [ ! -d "$i/cpufreq/" ]; then |
| continue; |
| fi |
| |
| # Kick off the test. |
| "$POUNDER_HOME/timed_loop" 900 "$POUNDER_SRCDIR/cpufreq/cpufreq.bin" "$i/cpufreq/scaling_setspeed" 10000 $f `find_cpu_frequencies $f` & |
| done |
| |
| # Wait for this to finish |
| while [ `pgrep cpufreq.bin | wc -l` -gt 0 ]; do |
| sleep 5 |
| done |
| |
| # Did we see any failures? |
| NEW_ERRORS=`egrep -ic "(error|fail|invalid|denied|cannot)" $LOGFILE` |
| ERRORS=$(( NEW_ERRORS - OLD_ERRORS )) |
| if [ $ERRORS -eq 255 ]; then |
| ERRORS=254 |
| fi |
| |
| # Failures will show up in the test output. Or better yet, |
| # panic/oops/BUG the machine. |
| exit $ERRORS |