Add a brief blurb saying how and when the kunit_test_suite() macro
works to the usage documentation.
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
.. note::
A test case will only be run if it is associated with a test suite.
+``kunit_test_suite(...)`` is a macro which tells the linker to put the specified
+test suite in a special linker section so that it can be run by KUnit either
+after late_init, or when the test module is loaded (depending on whether the
+test was built in or not).
+
For more information on these types of things see the :doc:`api/test`.
Isolating Behavior