linux/include/kunit
David Gow 908d0c177b kunit: Provide a static key to check if KUnit is actively running tests
KUnit does a few expensive things when enabled. This hasn't been a
problem because KUnit was only enabled on test kernels, but with a few
people enabling (but not _using_) KUnit on production systems, we need a
runtime way of handling this.

Provide a 'kunit_running' static key (defaulting to false), which allows
us to hide any KUnit code behind a static branch. This should reduce the
performance impact (on other code) of having KUnit enabled to a single
NOP when no tests are running.

Note that, while it looks unintuitive, tests always run entirely within
__kunit_test_suites_init(), so it's safe to decrement the static key at
the end of this function, rather than in __kunit_test_suites_exit(),
which is only there to clean up results in debugfs.

Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Daniel Latypov <dlatypov@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-12-12 14:13:47 -07:00
..
assert.h kunit: remove KUNIT_INIT_MEM_ASSERTION macro 2022-12-12 14:13:47 -07:00
resource.h kunit: make kunit_kfree() only work on pointers from kunit_malloc() and friends 2022-10-07 10:15:44 -06:00
test-bug.h kunit: fix -Wunused-function warning for __kunit_fail_current_test 2021-04-06 15:22:39 -06:00
test.h kunit: Provide a static key to check if KUnit is actively running tests 2022-12-12 14:13:47 -07:00
try-catch.h kunit: hide unexported try-catch interface in try-catch-impl.h 2020-01-09 16:42:09 -07:00