selftests: locking: return Kselftest Skip code for skipped tests
authorShuah Khan (Samsung OSG) <shuah@kernel.org>
Fri, 4 May 2018 17:38:40 +0000 (11:38 -0600)
committerShuah Khan (Samsung OSG) <shuah@kernel.org>
Wed, 30 May 2018 21:29:06 +0000 (15:29 -0600)
commitf9fedb2719b1aed80f8e614b2b1f54df94ae1ebb
tree4c0aed1ff3efa643b0082c2a9cf70f586fb427c0
parentfeb2d9a4d042b2540fa0803c9cbefe1ba6314984
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: Shuah Khan (Samsung OSG) <shuah@kernel.org>
tools/testing/selftests/locking/ww_mutex.sh [changed mode: 0644->0755]