#! /bin/sh
#
# Copyright (c) International Business Machines Corp., 2001
# Author: Nageswara R Sastry <nasastry@in.ibm.com>
#
# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
export TCID="Power_Management03"
export TST_TOTAL=4
. test.sh
. pm_include.sh
check_cpufreq_sysfs_files() {
total_cpus=$(tst_ncpus)
(( total_cpus-=1 ))
RC=0
for cpu in $(seq 0 "${total_cpus}" )
do
cpufiles=$(find /sys/devices/system/cpu/cpu"${cpu}"/cpufreq/ \
-name "*" -type f -perm /400)
for files in ${cpufiles}
do
cat ${files} >/dev/null 2>&1
if [ $? -ne 0 ] ; then
echo "${0}: FAIL: cat ${files}"
RC=1
fi
done
done
if [ ${RC} -eq 0 ] ; then
echo "${0}: PASS: Checking cpu freq sysfs files"
fi
return $RC
}
change_govr() {
available_govr=$(get_supporting_govr)
total_cpus=$(tst_ncpus)
(( total_cpus-=1 ))
RC=0
for cpu in $(seq 0 "${total_cpus}" )
do
for govr in ${available_govr}
do
echo ${govr} > \
/sys/devices/system/cpu/cpu${cpu}/cpufreq/scaling_governor
if [ "$?" -ne "0" ] ; then
echo "${0}: FAIL: Unable to set" \
"governor -- ${govr} for cpu${cpu}"
RC=1
fi
done
done
if [ ${RC} -eq 0 ] ; then
echo "${0}: PASS: Changing cpu governors"
fi
return $RC
}
change_freq() {
available_freq=$(get_supporting_freq)
available_govr=$(get_supporting_govr)
RC=0
total_cpus=$(tst_ncpus)
(( total_cpus-=1 ))
if ( echo ${available_govr} | grep -i "userspace" \
>/dev/null 2>&1 ); then
for cpu in $(seq 0 "${total_cpus}" )
do
echo userspace > \
/sys/devices/system/cpu/cpu${cpu}/cpufreq/scaling_governor
if [ $? -ne 0 ] ; then
RC=1
fi
done
if [ ${RC} -ne 1 ] ; then
for cpu in $(seq 0 "${total_cpus}" )
do
for freq in ${available_freq}
do
echo ${freq} > \
/sys/devices/system/cpu/cpu${cpu}/cpufreq/scaling_setspeed
if [ "$?" -ne "0" ] ; then
echo "${0}: FAIL: Unable" \
"to set frequency -- ${freq} for cpu${cpu}"
RC=1
fi
done
done
fi
fi
if [ ${RC} -eq 0 ] ; then
echo "${0}: PASS: Changing cpu frequencies"
fi
return $RC
}
pwkm_load_unload() {
RC=0
loaded_governor=`cat \
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor`
for module in `modprobe -l | grep cpufreq_ | \
cut -f8 -d"/" | cut -f1 -d"."`
do
#echo -n "Loading $module ... "
if [ $module != "cpufreq_$loaded_governor" ]; then
modprobe $module >/dev/null
if [ $? -ne 0 ] ; then
echo "${0}: FAIL: Loading of module $module" \
"or check whether you compiled as module or not"
RC=1
fi
fi
done
for module in `modprobe -l | grep cpufreq_ | \
cut -f8 -d"/" | cut -f1 -d"."`
do
#echo -n "Unloading $module ... "
if [ $module != "cpufreq_$loaded_governor" ]; then
modprobe -r $module >/dev/null
if [ $? -ne 0 ] ; then
echo "${0}: FAIL: Loading of module $module" \
"or check whether you compiled as module or not"
RC=1
fi
fi
done
return $RC
}
# Checking test environment
check_kervel_arch
# Checking cpufreq sysfs interface files
if [ ! -d /sys/devices/system/cpu/cpu0/cpufreq ] ; then
tst_brkm TCONF "Required kernel configuration for CPU_FREQ NOT set"
fi
if check_cpufreq_sysfs_files ; then
tst_resm TPASS "CPUFREQ sysfs tests"
else
tst_resm TFAIL "CPUFREQ sysfs tests"
fi
# Changing governors
if change_govr ; then
tst_resm TPASS "Changing governors"
else
tst_resm TFAIL "Changing governors"
fi
# Changing frequencies
if change_freq ; then
tst_resm TPASS "Changing frequncies"
else
tst_resm TFAIL "Changing frequncies"
fi
# Loading and Unloading governor related kernel modules
if pwkm_load_unload ; then
tst_resm TPASS "Loading and Unloading of governor kernel" \
"modules"
else
tst_resm TFAIL "Loading and Unloading of governor kernel" \
"modules got failed"
fi
tst_exit