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kunit: Move kunit_abort() call out of kunit_do_failed_assertion()

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KUnit aborts the current thread when an assertion fails. Currently, this
is done conditionally as part of the kunit_do_failed_assertion()
function, but this hides the kunit_abort() call from the compiler
(particularly if it's in another module). This, in turn, can lead to
both suboptimal code generation (the compiler can't know if
kunit_do_failed_assertion() will return), and to static analysis tools
like smatch giving false positives.

Moving the kunit_abort() call into the macro should give the compiler
and tools a better chance at understanding what's going on. Doing so
requires exporting kunit_abort(), though it's recommended to continue to
use assertions in lieu of aborting directly.

In addition, kunit_abort() and kunit_do_failed_assertion() are renamed
to make it clear they they're intended for internal KUnit use, to:
__kunit_do_failed_assertion() and __kunit_abort()

Suggested-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Daniel Latypov <dlatypov@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
David Gow 2023-05-31 13:21:57 +08:00 committed by Shuah Khan
parent c042030aa1
commit 260755184c
2 changed files with 16 additions and 14 deletions
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8
include/kunit/test.h
View File

@ -482,7 +482,9 @@ void __printf(2, 3) kunit_log_append(char *log, const char *fmt, ...);
*/
#define KUNIT_SUCCEED(test) do {} while (0)
void kunit_do_failed_assertion(struct kunit *test,
void __noreturn __kunit_abort(struct kunit *test);
void __kunit_do_failed_assertion(struct kunit *test,
const struct kunit_loc *loc,
enum kunit_assert_type type,
const struct kunit_assert *assert,
@ -492,13 +494,15 @@ void kunit_do_failed_assertion(struct kunit *test,
#define _KUNIT_FAILED(test, assert_type, assert_class, assert_format, INITIALIZER, fmt, ...) do { \
static const struct kunit_loc __loc = KUNIT_CURRENT_LOC; \
const struct assert_class __assertion = INITIALIZER; \
kunit_do_failed_assertion(test, \
__kunit_do_failed_assertion(test, \
&__loc, \
assert_type, \
&__assertion.assert, \
assert_format, \
fmt, \
##__VA_ARGS__); \
if (assert_type == KUNIT_ASSERTION) \
__kunit_abort(test); \
} while (0)

10
lib/kunit/test.c
View File

@ -323,7 +323,7 @@ static void kunit_fail(struct kunit *test, const struct kunit_loc *loc,
string_stream_destroy(stream);
}
static void __noreturn kunit_abort(struct kunit *test)
void __noreturn __kunit_abort(struct kunit *test)
{
kunit_try_catch_throw(&test->try_catch); /* Does not return. */
@ -335,8 +335,9 @@ static void __noreturn kunit_abort(struct kunit *test)
*/
WARN_ONCE(true, "Throw could not abort from test!\n");
}
EXPORT_SYMBOL_GPL(__kunit_abort);
void kunit_do_failed_assertion(struct kunit *test,
void __kunit_do_failed_assertion(struct kunit *test,
const struct kunit_loc *loc,
enum kunit_assert_type type,
const struct kunit_assert *assert,
@ -353,11 +354,8 @@ void kunit_do_failed_assertion(struct kunit *test,
kunit_fail(test, loc, type, assert, assert_format, &message);
va_end(args);
if (type == KUNIT_ASSERTION)
kunit_abort(test);
}
EXPORT_SYMBOL_GPL(kunit_do_failed_assertion);
EXPORT_SYMBOL_GPL(__kunit_do_failed_assertion);
void kunit_init_test(struct kunit *test, const char *name, char *log)
{