Re: [PATCH -next 2/5] selftests/cpu-hotplug: Replace exit with return

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On 8/30/22 02:30, Zhao Gongyi wrote:
Replace exit with return to avoid some offline cpu
left when offline cpus fail.


Some cpus will be left in offline state when online
function exits ...

Can you state this clearly in the change log.

Signed-off-by: Zhao Gongyi <zhaogongyi@xxxxxxxxxx>
---
  .../selftests/cpu-hotplug/cpu-on-off-test.sh        | 13 ++++++++-----
  1 file changed, 8 insertions(+), 5 deletions(-)

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 1169ef82b55e..19028c4c9758 100755
--- a/tools/testing/selftests/cpu-hotplug/cpu-on-off-test.sh
+++ b/tools/testing/selftests/cpu-hotplug/cpu-on-off-test.sh
@@ -4,6 +4,7 @@
  SYSFS=
  # Kselftest framework requirement - SKIP code is 4.
  ksft_skip=4
+retval=0

  prerequisite()
  {
@@ -102,10 +103,10 @@ online_cpu_expect_success()

  	if ! online_cpu $cpu; then
  		echo $FUNCNAME $cpu: unexpected fail >&2
-		exit 1
+		let retval=$retval+1
  	elif ! cpu_is_online $cpu; then
  		echo $FUNCNAME $cpu: unexpected offline >&2
-		exit 1
+		let retval=$retval+1
  	fi
  }

@@ -128,10 +129,10 @@ offline_cpu_expect_success()

  	if ! offline_cpu $cpu; then
  		echo $FUNCNAME $cpu: unexpected fail >&2
-		exit 1
+		let retval=$retval+1
  	elif ! cpu_is_offline $cpu; then
  		echo $FUNCNAME $cpu: unexpected offline >&2
-		exit 1
+		let retval=$retval+1
  	fi
  }

@@ -201,7 +202,7 @@ if [ $allcpus -eq 0 ]; then
  		offline_cpu_expect_success $present_max
  		online_cpu $present_max
  	fi
-	exit 0
+	exit $retval
  else
  	echo "Full scope test: all hotplug cpus"
  	echo -e "\t online all offline cpus"
@@ -291,3 +292,5 @@ done

  echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_DOWN_PREPARE/error
  /sbin/modprobe -q -r cpu-notifier-error-inject
+
+exit $retval

This retval can be ksft_skip value if 4 of them fail. The test
result will be incorrect in this case and will be reported as
a skip. Let's avoid that case.

thanks,
-- Shuah



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