Signed-off-by: Sanjay Singh Rawat sanjay.rawat@linaro.org --- - This will help in catching issue like https://lkml.org/lkml/2014/3/25/122
- Tested on my x86 dev m/c Output: running hotplug stress on cpu : cpu1 pass: cpu hotplug count = 200 duration = 16.98 seconds running hotplug stress on cpu : cpu2 pass: cpu hotplug count = 200 duration = 16.36 seconds running hotplug stress on cpu : cpu3 pass: cpu hotplug count = 200 duration = 15.05 seconds
- Issue: For a hotplug count of 500 the system just hangs. Need to manually restart. Is it safe to simply plugout the cpu? What will happend to the tasks in the cpu runqueue. --- cpuhotplug/cpuhotplug_09.sh | 70 ++++++++++++++++++++++++++++++++++++++++++ cpuhotplug/cpuhotplug_09.txt | 1 + 2 files changed, 71 insertions(+) create mode 100755 cpuhotplug/cpuhotplug_09.sh create mode 100644 cpuhotplug/cpuhotplug_09.txt
diff --git a/cpuhotplug/cpuhotplug_09.sh b/cpuhotplug/cpuhotplug_09.sh new file mode 100755 index 0000000..be0c91c --- /dev/null +++ b/cpuhotplug/cpuhotplug_09.sh @@ -0,0 +1,70 @@ +#!/bin/bash +# +# PM-QA validation test suite for the power management on Linux +# +# Copyright (C) 2014, 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: +# Sanjay Singh Rawat sanjay.rawat@linaro.org +# - initial API and implementation +# + +# URL : https://wiki.linaro.org/WorkingGroups/PowerManagement/Resources/TestSuite/Pm... + +source ../include/functions.sh +STRESS_COUNT=200 + +cpuhotplug_stress() { + local cpu=$1 + local dirpath=$CPU_PATH/$1 + local state= + local start= + local end= + shift 1 + + if [ "$cpu" == "cpu0" ]; then + # skipping main cpu + return 0 + fi + + echo "running hotplug stress on cpu :" $cpu + start=$(echo $(awk '{print $1}' /proc/uptime)) + + for i in $(seq 1 $STRESS_COUNT); + do + set_offline $cpu + state=$(get_online $cpu) + if [ $state -ne 0 ]; then + echo "fail: cpu offline failed at " $i + return 1 + fi + + set_online $cpu + state=$(get_online $cpu) + if [ $state -ne 1 ]; then + echo "fail: cpu online failed at " $i + return 1 + fi + done + + end=$(echo $(awk '{print $1}' /proc/uptime)) + echo "pass: cpu hotplug in/out count =" $i "duration =" $(echo "$end-$start" | bc) "seconds" + return 0 +} + +for_each_cpu cpuhotplug_stress +test_status_show diff --git a/cpuhotplug/cpuhotplug_09.txt b/cpuhotplug/cpuhotplug_09.txt new file mode 100644 index 0000000..5b0f8ac --- /dev/null +++ b/cpuhotplug/cpuhotplug_09.txt @@ -0,0 +1 @@ +test to stress cpu hotplug feature