linux-kernel - [PATCH -next v5 3/4] selftests/memory-hotplug: Adjust log info for maintainability

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Date:   Fri, 30 Sep 2022 14:35:26 +0800
From:   Zhao Gongyi <zhaogongyi@...wei.com>
To:     <linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-mm@...ck.org>, <linux-kselftest@...r.kernel.org>
CC:     <akinobu.mita@...il.com>, <corbet@....net>, <david@...hat.com>,
        <osalvador@...e.de>, <shuah@...nel.org>, <zhaogongyi@...wei.com>
Subject: [PATCH -next v5 3/4] selftests/memory-hotplug: Adjust log info for maintainability

Redirect misleading error message to /dev/null for
offline_memory_expect_success(), And, add an output
for online->offline test.

Signed-off-by: Zhao Gongyi <zhaogongyi@...wei.com>
---
 tools/testing/selftests/memory-hotplug/mem-on-off-test.sh | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/memory-hotplug/mem-on-off-test.sh b/tools/testing/selftests/memory-hotplug/mem-on-off-test.sh
index 91a7457616bb..74ee5067a8ce 100755
--- a/tools/testing/selftests/memory-hotplug/mem-on-off-test.sh
+++ b/tools/testing/selftests/memory-hotplug/mem-on-off-test.sh
@@ -207,8 +207,11 @@ echo -e "\t trying to offline $target out of $hotpluggable_num memory block(s):"
 for memory in `hotpluggable_online_memory`; do
 	if [ "$target" -gt 0 ]; then
 		echo "online->offline memory$memory"
-		if offline_memory_expect_success $memory; then
+		if offline_memory_expect_success $memory &>/dev/null; then
 			target=$(($target - 1))
+			echo "-> Success"
+		else
+			echo "-> Failure"
 		fi
 	fi
 done
@@ -267,7 +270,7 @@ prerequisite_extra
 echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
 for memory in `hotpluggable_online_memory`; do
 	if [ $((RANDOM % 100)) -lt $ratio ]; then
-		offline_memory_expect_success $memory
+		offline_memory_expect_success $memory &>/dev/null
 	fi
 done

--
2.17.1