#! /bin/sh
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#
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# Copyright (c) International Business Machines Corp., 2001
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# Author: Nageswara R Sastry <nasastry@in.ibm.com>
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#
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# This program is free software; you can redistribute it and#or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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#
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export TCID="Power_Management03"
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export TST_TOTAL=4
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. test.sh
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. pm_include.sh
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check_cpufreq_sysfs_files() {
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total_cpus=$(tst_ncpus)
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(( total_cpus-=1 ))
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RC=0
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for cpu in $(seq 0 "${total_cpus}" )
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do
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cpufiles=$(find /sys/devices/system/cpu/cpu"${cpu}"/cpufreq/ \
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-name "*" -type f -perm /400)
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for files in ${cpufiles}
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do
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cat ${files} >/dev/null 2>&1
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if [ $? -ne 0 ] ; then
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echo "${0}: FAIL: cat ${files}"
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RC=1
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fi
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done
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done
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if [ ${RC} -eq 0 ] ; then
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echo "${0}: PASS: Checking cpu freq sysfs files"
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fi
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return $RC
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}
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change_govr() {
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available_govr=$(get_supporting_govr)
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total_cpus=$(tst_ncpus)
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(( total_cpus-=1 ))
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RC=0
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for cpu in $(seq 0 "${total_cpus}" )
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do
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for govr in ${available_govr}
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do
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echo ${govr} > \
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/sys/devices/system/cpu/cpu${cpu}/cpufreq/scaling_governor
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if [ "$?" -ne "0" ] ; then
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echo "${0}: FAIL: Unable to set" \
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"governor -- ${govr} for cpu${cpu}"
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RC=1
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fi
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done
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done
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if [ ${RC} -eq 0 ] ; then
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echo "${0}: PASS: Changing cpu governors"
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fi
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return $RC
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}
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change_freq() {
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available_freq=$(get_supporting_freq)
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available_govr=$(get_supporting_govr)
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RC=0
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total_cpus=$(tst_ncpus)
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(( total_cpus-=1 ))
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if ( echo ${available_govr} | grep -i "userspace" \
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>/dev/null 2>&1 ); then
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for cpu in $(seq 0 "${total_cpus}" )
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do
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echo userspace > \
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/sys/devices/system/cpu/cpu${cpu}/cpufreq/scaling_governor
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if [ $? -ne 0 ] ; then
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RC=1
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fi
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done
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if [ ${RC} -ne 1 ] ; then
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for cpu in $(seq 0 "${total_cpus}" )
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do
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for freq in ${available_freq}
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do
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echo ${freq} > \
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/sys/devices/system/cpu/cpu${cpu}/cpufreq/scaling_setspeed
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if [ "$?" -ne "0" ] ; then
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echo "${0}: FAIL: Unable" \
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"to set frequency -- ${freq} for cpu${cpu}"
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RC=1
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fi
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done
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done
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fi
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fi
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if [ ${RC} -eq 0 ] ; then
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echo "${0}: PASS: Changing cpu frequencies"
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fi
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return $RC
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}
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pwkm_load_unload() {
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RC=0
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loaded_governor=`cat \
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/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor`
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for module in `modprobe -l | grep cpufreq_ | \
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cut -f8 -d"/" | cut -f1 -d"."`
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do
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#echo -n "Loading $module ... "
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if [ $module != "cpufreq_$loaded_governor" ]; then
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modprobe $module >/dev/null
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if [ $? -ne 0 ] ; then
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echo "${0}: FAIL: Loading of module $module" \
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"or check whether you compiled as module or not"
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RC=1
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fi
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fi
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done
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for module in `modprobe -l | grep cpufreq_ | \
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cut -f8 -d"/" | cut -f1 -d"."`
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do
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#echo -n "Unloading $module ... "
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if [ $module != "cpufreq_$loaded_governor" ]; then
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modprobe -r $module >/dev/null
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if [ $? -ne 0 ] ; then
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echo "${0}: FAIL: Loading of module $module" \
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"or check whether you compiled as module or not"
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RC=1
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fi
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fi
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done
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return $RC
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}
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# Checking test environment
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check_kervel_arch
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# Checking cpufreq sysfs interface files
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if [ ! -d /sys/devices/system/cpu/cpu0/cpufreq ] ; then
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tst_brkm TCONF "Required kernel configuration for CPU_FREQ NOT set"
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fi
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if check_cpufreq_sysfs_files ; then
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tst_resm TPASS "CPUFREQ sysfs tests"
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else
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tst_resm TFAIL "CPUFREQ sysfs tests"
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fi
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# Changing governors
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if change_govr ; then
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tst_resm TPASS "Changing governors"
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else
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tst_resm TFAIL "Changing governors"
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fi
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# Changing frequencies
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if change_freq ; then
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tst_resm TPASS "Changing frequncies"
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else
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tst_resm TFAIL "Changing frequncies"
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fi
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# Loading and Unloading governor related kernel modules
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if pwkm_load_unload ; then
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tst_resm TPASS "Loading and Unloading of governor kernel" \
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"modules"
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else
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tst_resm TFAIL "Loading and Unloading of governor kernel" \
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"modules got failed"
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fi
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tst_exit
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