[PATCH 4.14 026/217] selftests: zram: return Kselftest Skip code for skipped tests

Greg Kroah-Hartman
2018-08-23T08:20:09Z

From: "Shuah Khan (Samsung OSG)" <shuah@kernel.org>

[ Upstream commit 685814466bf8398192cf855415a0bb2cefc1930e ]

When zram test is skipped because of unmet dependencies and/or
unsupported configuration, it exits with error which is treated as
a fail by the Kselftest framework. This leads to false negative result
even when the test could not be run.

Change it to return kselftest skip code when a test gets skipped to
clearly report that the test could not be run.

Kselftest framework SKIP code is 4 and the framework prints appropriate
messages to indicate that the test is skipped.

Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/testing/selftests/zram/zram.sh | 5 ++++-
tools/testing/selftests/zram/zram_lib.sh | 5 ++++-
2 files changed, 8 insertions(+), 2 deletions(-)

--- a/tools/testing/selftests/zram/zram.sh
+++ b/tools/testing/selftests/zram/zram.sh
@@ -2,6 +2,9 @@
# SPDX-License-Identifier: GPL-2.0
TCID="zram.sh"

+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
. ./zram_lib.sh

run_zram () {
@@ -24,5 +27,5 @@ elif [ -b /dev/zram0 ]; then
else
echo "$TCID : No zram.ko module or /dev/zram0 device file not found"
echo "$TCID : CONFIG_ZRAM is not set"
- exit 1
+ exit $ksft_skip
fi
--- a/tools/testing/selftests/zram/zram_lib.sh
+++ b/tools/testing/selftests/zram/zram_lib.sh
@@ -18,6 +18,9 @@ MODULE=0
dev_makeswap=-1
dev_mounted=-1

+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
trap INT

check_prereqs()
@@ -27,7 +30,7 @@ check_prereqs()

if [ $uid -ne 0 ]; then
echo $msg must be run as root >&2
- exit 0
+ exit $ksft_skip
fi
}