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#!/bin/bash
#
# PM-QA validation test suite for the power management on Linux
#
# Copyright (C) 2011, Linaro Limited.
#
# 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.
#
# Contributors:
# Daniel Lezcano <daniel.lezcano@linaro.org> (IBM Corporation)
# - initial API and implementation
#
# URL : https://wiki.linaro.org/WorkingGroups/PowerManagement/Doc/QA/Scripts#cpufreq_07
source ../include/functions.sh
CPUBURN=../utils/cpuburn
check_ondemand() {
local cpu=$1
local maxfreq=$(get_max_frequency $cpu)
local minfreq=$(get_min_frequency $cpu)
local curfreq=$(get_frequency $cpu)
local pid=
set_governor $cpu ondemand
# wait for a quescient point
for i in $(seq 1 10); do
if [ "$minfreq" == "$(get_frequency $cpu)" ]; then
$CPUBURN $cpu &
pid=$!
sleep 1
wait_latency $cpu
curfreq=$(get_frequency $cpu)
kill $pid
check "'ondemand' increase frequency on load" "test \"$curfreq\" == \"$maxfreq\""
if [ "$?" != "0" ]; then
return 1
fi
sleep 1
curfreq=$(get_frequency $cpu)
check "'ondemand' decrease frequency on idle" "test \"$curfreq\" == \"$minfreq\""
if [ "$?" != "0" ]; then
return 1
fi
return 0
fi
sleep 1
done
log_skip "can not reach a quescient point for 'ondemand'"
return 1
}
if [ $(id -u) != 0 ]; then
log_skip "run as non-root"
exit 0
fi
supported=$(cat $CPU_PATH/cpu0/cpufreq/scaling_available_governors | grep "ondemand")
if [ -z $supported ]; then
log_skip "ondemand not supported"
exit 0
fi
save_governors
trap "restore_governors; sigtrap" SIGHUP SIGINT SIGTERM
for_each_cpu check_ondemand
restore_governors
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