[PATCH 2/5] selftests: check hot-pluggagble memory for memory-hotplug test

[Po-Hsu Lin]

Check for hot-pluggable memory availability in prerequisite() of the
memory-hotplug test.

Signed-off-by: Po-Hsu Lin <po-hsu.lin at canonical.com>
Signed-off-by: Shuah Khan <shuahkh at osg.samsung.com>
(cherry picked from commit a34b28c92ec8c92938de03c18c5fab32efd2e29a)
Signed-off-by: Po-Hsu Lin <po-hsu.lin at canonical.com>
---
 tools/testing/selftests/memory-hotplug/mem-on-off-test.sh | 5 +++++
 1 file changed, 5 insertions(+)

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 a8d8587..993ff2b 100755
--- a/tools/testing/selftests/memory-hotplug/mem-on-off-test.sh
+++ b/tools/testing/selftests/memory-hotplug/mem-on-off-test.sh
@@ -22,6 +22,11 @@ prerequisite()
 		echo $msg memory hotplug is not supported >&2
 		exit 0
 	fi
+
+	if ! grep -q 1 $SYSFS/devices/system/memory/memory*/removable; then
+		echo $msg no hot-pluggable memory >&2
+		exit 0
+	fi
 }
 
 #
-- 
2.7.4