linux-kernel - [PATCH -next v4 2/3] selftests/memory-hotplug: Restore memory before exit

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Message-ID: <20220927032851.128174-3-zhaogongyi@huawei.com>
Date:   Tue, 27 Sep 2022 11:28:50 +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 v4 2/3] selftests/memory-hotplug: Restore memory before exit

Some momory will be left in offline state when calling
offline_memory_expect_fail() failed. Restore it before exit.

Signed-off-by: Zhao Gongyi <zhaogongyi@...wei.com>
---
 .../memory-hotplug/mem-on-off-test.sh         | 21 ++++++++++++++-----
 1 file changed, 16 insertions(+), 5 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 1d87611a7d52..91a7457616bb 100755
--- a/tools/testing/selftests/memory-hotplug/mem-on-off-test.sh
+++ b/tools/testing/selftests/memory-hotplug/mem-on-off-test.sh
@@ -134,6 +134,16 @@ offline_memory_expect_fail()
 	return 0
 }

+online_all_offline_memory()
+{
+	for memory in `hotpluggable_offline_memory`; do
+		if ! online_memory_expect_success $memory; then
+			echo "$FUNCNAME $memory: unexpected fail" >&2
+			retval=1
+		fi
+	done
+}
+
 error=-12
 priority=0
 # Run with default of ratio=2 for Kselftest run
@@ -275,11 +285,7 @@ done
 # Online all hot-pluggable memory
 #
 echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_ONLINE/error
-for memory in `hotpluggable_offline_memory`; do
-	if ! online_memory_expect_success $memory; then
-		retval=1
-	fi
-done
+online_all_offline_memory

 #
 # Test memory hot-remove error handling (online => offline)
@@ -296,4 +302,9 @@ done
 echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
 /sbin/modprobe -q -r memory-notifier-error-inject

+#
+# Restore memory before exit
+#
+online_all_offline_memory
+
 exit $retval
--
2.17.1