cpuhotplug*.sh: Check return value of online_cpu/offline_cpu

We need to check the return value of online_cpu() and offline_cpu()
although it is always success.

Signed-off-by: Zhao Gongyi <zhaogongyi@huawei.com>
---
 .../hotplug/cpu_hotplug/functional/cpuhotplug02.sh   | 10 ++++++++--
 .../hotplug/cpu_hotplug/functional/cpuhotplug05.sh   |  9 +++++++--
 .../hotplug/cpu_hotplug/functional/cpuhotplug06.sh   |  5 ++++-
 .../hotplug/cpu_hotplug/functional/cpuhotplug07.sh   | 12 ++++++------
 4 files changed, 25 insertions(+), 11 deletions(-)

--
2.17.1

Hi Zhao,

> We need to check the return value of online_cpu() and offline_cpu()
> although it is always success.

Reviewed-by: Petr Vorel <pvorel@suse.cz>
Looks reasonable.

Kind regards,
Petr

> Signed-off-by: Zhao Gongyi <zhaogongyi@huawei.com>
> ---
>  .../hotplug/cpu_hotplug/functional/cpuhotplug02.sh   | 10 ++++++++--
>  .../hotplug/cpu_hotplug/functional/cpuhotplug05.sh   |  9 +++++++--
>  .../hotplug/cpu_hotplug/functional/cpuhotplug06.sh   |  5 ++++-
>  .../hotplug/cpu_hotplug/functional/cpuhotplug07.sh   | 12 ++++++------
>  4 files changed, 25 insertions(+), 11 deletions(-)

> diff --git a/testcases/kernel/hotplug/cpu_hotplug/functional/cpuhotplug02.sh b/testcases/kernel/hotplug/cpu_hotplug/functional/cpuhotplug02.sh
> index f12aabc72..ba274db01 100755
> --- a/testcases/kernel/hotplug/cpu_hotplug/functional/cpuhotplug02.sh
> +++ b/testcases/kernel/hotplug/cpu_hotplug/functional/cpuhotplug02.sh
> @@ -90,7 +90,10 @@ until [ $LOOP_COUNT -gt $HOTPLUG02_LOOPS ]; do
>  	set_affinity ${SPIN_LOOP_PID} ${CPU_TO_TEST}

>  	# Verify the process migrated to the CPU we intended it to go to
> -	offline_cpu ${CPU_TO_TEST}
> +	if ! offline_cpu ${CPU_TO_TEST}; then
> +		tst_brkm TBROK "CPU${CPU_TO_TEST} cannot be offlined"
> +	fi
> +
>  	NEW_CPU=`ps --pid=${SPIN_LOOP_PID} -o psr --no-headers`
>  	if [ -z "${NEW_CPU}" ]; then
>  		tst_brkm TBROK "PID ${SPIN_LOOP_PID} no longer running"
> @@ -101,7 +104,10 @@ until [ $LOOP_COUNT -gt $HOTPLUG02_LOOPS ]; do
>  	fi

>  	# Turn the CPU back online just to see what happens.
> -	online_cpu ${CPU_TO_TEST}
> +	if ! online_cpu ${CPU_TO_TEST}; then
> +		tst_brkm TBROK "CPU${CPU_TO_TEST} cannot be onlined"
> +	fi
> +
>  	LOOP_COUNT=$((LOOP_COUNT+1))
>  done

> diff --git a/testcases/kernel/hotplug/cpu_hotplug/functional/cpuhotplug05.sh b/testcases/kernel/hotplug/cpu_hotplug/functional/cpuhotplug05.sh
> index 2feb8d9ff..1eb204f4e 100755
> --- a/testcases/kernel/hotplug/cpu_hotplug/functional/cpuhotplug05.sh
> +++ b/testcases/kernel/hotplug/cpu_hotplug/functional/cpuhotplug05.sh
> @@ -36,7 +36,9 @@ EOF
>  do_clean()
>  {
>  	pid_is_valid ${SAR_PID} && kill_pid ${SAR_PID}
> -	online_cpu "$CPU_TO_TEST"
> +	if ! online_cpu ${CPU_TO_TEST}; then
> +		tst_brkm TBROK "CPU${CPU_TO_TEST} cannot be onlined"
> +	fi
>  }

>  get_field()
> @@ -149,7 +151,10 @@ until [ $LOOP_COUNT -gt $HOTPLUG05_LOOPS ]; do
>  		tst_exit
>  	fi

> -	offline_cpu ${CPU_TO_TEST}
> +	if ! offline_cpu ${CPU_TO_TEST}; then
> +		tst_brkm TBROK "CPU${CPU_TO_TEST} cannot be offlined"
> +	fi
> +
>  	kill_pid ${SAR_PID}

>  	LOOP_COUNT=$((LOOP_COUNT+1))
> diff --git a/testcases/kernel/hotplug/cpu_hotplug/functional/cpuhotplug06.sh b/testcases/kernel/hotplug/cpu_hotplug/functional/cpuhotplug06.sh
> index 319c66537..b9c1889d3 100755
> --- a/testcases/kernel/hotplug/cpu_hotplug/functional/cpuhotplug06.sh
> +++ b/testcases/kernel/hotplug/cpu_hotplug/functional/cpuhotplug06.sh
> @@ -99,7 +99,10 @@ until [ $LOOP_COUNT -gt $HOTPLUG06_LOOPS ]; do
>  		tst_exit
>  	fi

> -	online_cpu ${CPU_TO_TEST}
> +	if ! online_cpu ${CPU_TO_TEST}; then
> +		tst_brkm TBROK "CPU${CPU_TO_TEST} cannot be onlined"
> +	fi
> +
>  	kill_pid ${TOP_PID}

>  	LOOP_COUNT=$((LOOP_COUNT+1))
> diff --git a/testcases/kernel/hotplug/cpu_hotplug/functional/cpuhotplug07.sh b/testcases/kernel/hotplug/cpu_hotplug/functional/cpuhotplug07.sh
> index 0d2dec7fe..af170f1cc 100755
> --- a/testcases/kernel/hotplug/cpu_hotplug/functional/cpuhotplug07.sh
> +++ b/testcases/kernel/hotplug/cpu_hotplug/functional/cpuhotplug07.sh
> @@ -100,9 +100,9 @@ until [ $LOOP_COUNT -gt $HOTPLUG07_LOOPS ]; do
>  	# Move spin_loop.sh to the CPU to offline.
>  	set_affinity ${KCOMPILE_LOOP_PID} ${CPU_TO_TEST}

> -	offline_cpu ${CPU_TO_TEST}
> -	RC=$?
> -	echo "Offlining cpu${CPU_TO_TEST}: Return Code = ${RC}"
> +	if ! offline_cpu ${CPU_TO_TEST}; then
> +		tst_brkm TBROK "CPU${CPU_TO_TEST} cannot be offlined"
> +	fi

>  	NEW_CPU=`ps --pid=${KCOMPILE_LOOP_PID} -o psr --no-headers`
>  	if [ -z "${NEW_CPU}" ]; then
> @@ -113,9 +113,9 @@ until [ $LOOP_COUNT -gt $HOTPLUG07_LOOPS ]; do
>  		tst_exit
>  	fi

> -	online_cpu ${CPU_TO_TEST}
> -	RC=$?
> -	echo "Onlining cpu${CPU_TO_TEST}: Return Code = ${RC}"
> +	if ! online_cpu ${CPU_TO_TEST}; then
> +		tst_brkm TBROK "CPU${CPU_TO_TEST} cannot be onlined"
> +	fi

>  	LOOP_COUNT=$((LOOP_COUNT+1))

> Hi Zhao,

> > We need to check the return value of online_cpu() and offline_cpu()
> > although it is always success.

Thanks, merged!

Kind regards,
Petr