selftests: locking: return Kselftest Skip code for skipped tests

When locking 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.

Added an explicit search for ww_mutex module and return skip code if
it isn't found to differentiate between the failure to load the module
condition and module not found condition.

Kselftest framework SKIP code is 4 and the framework prints appropriate
messages to indicate that the test is skipped.
Signed-off-by: default avatarShuah Khan (Samsung OSG) <shuah@kernel.org>
parent feb2d9a4
#!/bin/sh #!/bin/sh
# SPDX-License-Identifier: GPL-2.0 # SPDX-License-Identifier: GPL-2.0
# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4
# Runs API tests for struct ww_mutex (Wait/Wound mutexes) # Runs API tests for struct ww_mutex (Wait/Wound mutexes)
if ! /sbin/modprobe -q -n test-ww_mutex; then
echo "ww_mutex: module test-ww_mutex is not found [SKIP]"
exit $ksft_skip
fi
if /sbin/modprobe -q test-ww_mutex; then if /sbin/modprobe -q test-ww_mutex; then
/sbin/modprobe -q -r test-ww_mutex /sbin/modprobe -q -r test-ww_mutex
......
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