Hi Preeti,
> Hi
>
> The test case included is a simple case for cpu hotplug.It does offlines the
> cpus that are online and does an online of the offlined cpus in a loop
>
> This stress test had failed on certain distros when the loop was run infinite
> times.This test is presented here for review of correctness and necessity,as
> this is the first attempt at contributing test cases to LTP from this end.
>
> The test is meant to be included under the
> testcases/kernel/hotplug/cpu_hotplug/functional directory.
Why didn't you send this as a patch format?
Some comments below.
>
> Regards
> Preeti
> ---
>
> # File : stress_cpu_hotplug.sh
> # Description : Switches the online state of all the cpus in a
> # loop to test the robustness of cpu hotplug
> # : The loop iteration of 20 is a randomly chosen number
>
> #! /bin/bash
>
> # Includes:
> LHCS_PATH=${LHCS_PATH:-$LTPROOT/testcases/bin/cpu_hotplug}
> . $LHCS_PATH/include/hotplug.fns
> . $LHCS_PATH/include/testsuite.fns
>
> setup()
> {
> export TST_TOTAL=1
> export TCID="setup"
> export TST_COUNT=0
>
> trap "cleanup" 0
> RC=0
>
> return $RC
>
> }
> cleanup()
> {
> set_all_cpu_state "$STATE"
I can't find the definition of "$STATE" in your test script.
> }
>
> test01()
> {
>
> TCID="stress_cpu_hotplug"
> TST_COUNT=1
> RC=0
>
> NUMBER_OF_CPUS=`ls -d /sys/devices/system/cpu/cpu[0-9]* | wc -l`
>
> cd /sys/devices/system/cpu
>
> for ARRAY_INDEX in `seq 20`
> do
> for ((i=1; i < NUMBER_OF_CPUS; i++ ))
> do
> #skip the boot cpu;cannot offline it
> if [ $i -eq 0 ]
> then
> continue
> fi
>
> state=`cat cpu$i/online`
> if [ $state -eq 0 ]
> then
> RC=online_cpu $i
> else
> RC=offline_cpu $i
> fi
Can it always success? I suppose that it need a bit sleep for the
online/offline time delay.
>
> if [ $RC -ne 0 ]
> then
> test_brkm TBROK NULL "stress_cpu_hotplug:
> cpu$i failed to hotplug"
> return $RC
> fi
> done
>
> if [ `expr $ARRAY_INDEX % 10` == 0 ]
> then
> echo "stress test successfully completed
> "$ARRAY_INDEX" times">$LTPTMP/test_file.out
Every 10 times means a successful test?
> fi
> done
> test_res TPASS $LTPTMP/test_file.out "stress_cpu_hotplug:SUCCESS"
> return $RC
> }
>
> #main
>
> RC=0
> LTPTMP=${TMP}
>
> #create output file to dump test results
> touch $LTPTMP/test_file.out || RC=$?
>
> if [ $RC -ne 0 ]
> then
> test_resm TFAIL "Failed to create output file under temp directory"
> exit $RC
> fi
>
> if ! get_all_cpus >/dev/null 2>$RC;
> then
> tst_brkm TCONF "system does not have required cpu hotplug support"
> exit $RC
> fi
>
> setup || exit $RC
>
> #capture the initial state of the cpus
> state=`cd /sys/devices/system/cpu/ && grep '' */online | sed -e
> 's/\/online//g' -e 's/\ /\n/g'`
This is the "STATE"?
Does the output of get_all_cpu_states() not suit the set_all_cpu_states()?
if not, please fix it.
>
> test01 || exit $RC
Don't you want to cleanup and reset the cpu state after the test?
Thanks,
Wanlong Gao
>
>
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