On 08/13/2017 07:28 PM, Li Zhijian wrote:
> For only one online cpu case, 'make run_tests' try to offline the cpu0 that will
> always fail since the host can't offline this unique online cpu.
>
> this patch will skip the test to avoid this failure.
>
> Signed-off-by: Li Zhijian <lizhijian@xxxxxxxxxxxxxx>
> ---
> tools/testing/selftests/cpu-hotplug/cpu-on-off-test.sh | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/tools/testing/selftests/cpu-hotplug/cpu-on-off-test.sh b/tools/testing/selftests/cpu-hotplug/cpu-on-off-test.sh
> index e5666dd..b18b253 100755
> --- a/tools/testing/selftests/cpu-hotplug/cpu-on-off-test.sh
> +++ b/tools/testing/selftests/cpu-hotplug/cpu-on-off-test.sh
> @@ -28,6 +28,12 @@ prerequisite()
> echo "CPU online/offline summary:"
> online_cpus=`cat $SYSFS/devices/system/cpu/online`
> online_max=${online_cpus##*-}
> +
> + if [[ "$online_cpus" = "$online_max" ]]; then
> + echo "$msg: since there is only one cpu: $online_cpus"
> + exit 0
> + fi
> +
> echo -e "\t Cpus in online state: $online_cpus"
>
> offline_cpus=`cat $SYSFS/devices/system/cpu/offline`
>
Applied to linux-kselftest next to 4.14-rc1
thanks,
-- Shuah
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