Documentation should describe debugfs layout and semantics.
Signed-off-by: Alan Maguire alan.maguire@oracle.com --- Documentation/dev-tools/kunit/usage.rst | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)
diff --git a/Documentation/dev-tools/kunit/usage.rst b/Documentation/dev-tools/kunit/usage.rst index 7cd56a1..b05c843 100644 --- a/Documentation/dev-tools/kunit/usage.rst +++ b/Documentation/dev-tools/kunit/usage.rst @@ -590,3 +590,22 @@ able to run one test case per invocation.
.. TODO(brendanhiggins@google.com): Add an actual example of an architecture dependent KUnit test. + +KUnit debugfs representation +============================ +When kunit test suites are initialized, they create an associated directory +in /sys/kernel/debug/kunit/<test-suite>. The directory contains two files + +- results: "cat results" displays results of last test run +- run: "cat run" runs the test suite and displays the results + +Thus to re-run all currently loaded suites and display results, we can do this: + +``` +$ cat /sys/kernel/debug/kunit/*/run +``` + +The debugfs representation is primarily of use when kunit test suites are +run in a native environment, either as modules or builtin. Having a way +to display results like this is valuable as otherwise results can be +intermixed with other events in dmesg output.