linux-stable/lib/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
..
.kunitconfig kunit: tool: make --kunitconfig accept dirs, add lib/kunit fragment 2021-04-02 14:14:36 -06:00
assert.c kunit: Introduce KUNIT_EXPECT_MEMEQ and KUNIT_EXPECT_MEMNEQ macros 2022-10-27 02:39:47 -06:00
debugfs.c kunit: fix debugfs code to use enum kunit_status, not bool 2022-05-02 12:36:03 -06:00
debugfs.h kunit: add debugfs /sys/kernel/debug/kunit/<suite>/results display 2020-03-26 14:07:18 -06:00
executor_test.c kunit: flatten kunit_suite*** to kunit_suite** in .kunit_test_suites 2022-07-11 17:13:15 -06:00
executor.c kunit: add kunit.enable to enable/disable KUnit test 2022-09-30 13:17:39 -06:00
Kconfig kunit: add kunit.enable to enable/disable KUnit test 2022-09-30 13:17:39 -06:00
kunit-example-test.c kunit: Add KUnit memory block assertions to the example_all_expect_macros_test 2022-10-27 02:39:59 -06:00
kunit-test.c kunit: make kunit_kfree() only work on pointers from kunit_malloc() and friends 2022-10-07 10:15:44 -06:00
Makefile kunit: split resource API impl from test.c into new resource.c 2022-04-04 16:23:14 -06:00
resource.c kunit: Rework kunit_resource allocation policy 2022-05-12 11:14:39 -06:00
string-stream-test.c kunit: allow kunit tests to be loaded as a module 2020-01-09 16:42:29 -07:00
string-stream.c kunit: remove unused structure definition 2022-10-27 02:46:17 -06:00
string-stream.h kunit: drop test pointer in string_stream_fragment 2022-10-07 10:15:33 -06:00
test.c kunit: Provide a static key to check if KUnit is actively running tests 2022-12-12 14:13:47 -07:00
try-catch-impl.h kunit: hide unexported try-catch interface in try-catch-impl.h 2020-01-09 16:42:09 -07:00
try-catch.c kunit: make kunit_test_timeout compatible with comment 2022-03-22 15:57:11 -07:00