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linux_kselftest-kunit-fixes-6.7-rc4

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This KUnit fixes update for Linux 6.7-rc4 consists of three fixes to
 warnings and run-time test behavior. With these fixes, test suite
 counter will be reset correctly before running tests, kunit will warn
 if tests are too slow, and eliminate warning when kfree() as an action.
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Merge tag 'linux_kselftest-kunit-fixes-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull KUnit fixes from Shuah Khan:
 "Three fixes to warnings and run-time test behavior. With these fixes,
  test suite counter will be reset correctly before running tests, kunit
  will warn if tests are too slow, and eliminate warning when kfree() as
  an action"

* tag 'linux_kselftest-kunit-fixes-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  kunit: test: Avoid cast warning when adding kfree() as an action
  kunit: Reset suite counter right before running tests
  kunit: Warn if tests are slow
This commit is contained in:
Linus Torvalds 2023-12-01 14:03:05 +09:00
commit 47669f40b1
2 changed files with 41 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
lib/kunit/kunit-test.c
View File

@ -562,7 +562,7 @@ static void kunit_log_test(struct kunit *test)
KUNIT_EXPECT_TRUE(test, test->log->append_newlines);
full_log = string_stream_get_string(test->log);
kunit_add_action(test, (kunit_action_t *)kfree, full_log);
kunit_add_action(test, kfree_wrapper, full_log);
KUNIT_EXPECT_NOT_ERR_OR_NULL(test,
strstr(full_log, "put this in log."));
KUNIT_EXPECT_NOT_ERR_OR_NULL(test,

42
lib/kunit/test.c
View File

@ -338,6 +338,36 @@ void kunit_init_test(struct kunit *test, const char *name, struct string_stream
}
EXPORT_SYMBOL_GPL(kunit_init_test);
/* Only warn when a test takes more than twice the threshold */
#define KUNIT_SPEED_WARNING_MULTIPLIER 2
/* Slow tests are defined as taking more than 1s */
#define KUNIT_SPEED_SLOW_THRESHOLD_S 1
#define KUNIT_SPEED_SLOW_WARNING_THRESHOLD_S \
(KUNIT_SPEED_WARNING_MULTIPLIER * KUNIT_SPEED_SLOW_THRESHOLD_S)
#define s_to_timespec64(s) ns_to_timespec64((s) * NSEC_PER_SEC)
static void kunit_run_case_check_speed(struct kunit *test,
struct kunit_case *test_case,
struct timespec64 duration)
{
struct timespec64 slow_thr =
s_to_timespec64(KUNIT_SPEED_SLOW_WARNING_THRESHOLD_S);
enum kunit_speed speed = test_case->attr.speed;
if (timespec64_compare(&duration, &slow_thr) < 0)
return;
if (speed == KUNIT_SPEED_VERY_SLOW || speed == KUNIT_SPEED_SLOW)
return;
kunit_warn(test,
"Test should be marked slow (runtime: %lld.%09lds)",
duration.tv_sec, duration.tv_nsec);
}
/*
* Initializes and runs test case. Does not clean up or do post validations.
*/
@ -345,6 +375,8 @@ static void kunit_run_case_internal(struct kunit *test,
struct kunit_suite *suite,
struct kunit_case *test_case)
{
struct timespec64 start, end;
if (suite->init) {
int ret;
@ -356,7 +388,13 @@ static void kunit_run_case_internal(struct kunit *test,
}
}
ktime_get_ts64(&start);
test_case->run_case(test);
ktime_get_ts64(&end);
kunit_run_case_check_speed(test, test_case, timespec64_sub(end, start));
}
static void kunit_case_internal_cleanup(struct kunit *test)
@ -670,6 +708,8 @@ int __kunit_test_suites_init(struct kunit_suite * const * const suites, int num_
return 0;
}
kunit_suite_counter = 1;
static_branch_inc(&kunit_running);
for (i = 0; i < num_suites; i++) {
@ -696,8 +736,6 @@ void __kunit_test_suites_exit(struct kunit_suite **suites, int num_suites)
for (i = 0; i < num_suites; i++)
kunit_exit_suite(suites[i]);
kunit_suite_counter = 1;
}
EXPORT_SYMBOL_GPL(__kunit_test_suites_exit);