diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/igt_debugfs.c | 21 | ||||
| -rw-r--r-- | lib/igt_debugfs.h | 1 |
2 files changed, 21 insertions, 1 deletions
diff --git a/lib/igt_debugfs.c b/lib/igt_debugfs.c index a2cec45a..dddd6c35 100644 --- a/lib/igt_debugfs.c +++ b/lib/igt_debugfs.c @@ -63,7 +63,7 @@ * another either for equality or difference. Otherwise CRCs must be treated as * completely opaque values. Note that not even CRCs from different pipes or tap * points on the same platform can be compared. Hence only use igt_crc_is_null() - * and igt_crc_equal() to inspect CRC values captured by the same + * and igt_assert_crc_equal() to inspect CRC values captured by the same * #igt_pipe_crc_t object. * * # Other debugfs interface wrappers @@ -235,6 +235,25 @@ bool igt_crc_equal(igt_crc_t *a, igt_crc_t *b) } /** + * igt_assert_crc_equal: + * @a: first pipe CRC value + * @b: second pipe CRC value + * + * Compares two CRC values and fails the testcase if they don't match with + * igt_fail(). Note that due to CRC collisions CRC based testcase can only + * assert that CRCs match, never that they are different. Otherwise there might + * be random testcase failures when different screen contents end up with the + * same CRC by chance. + */ +void igt_assert_crc_equal(igt_crc_t *a, igt_crc_t *b) +{ + int i; + + for (i = 0; i < a->n_words; i++) + igt_assert_eq_u32(a->crc[i], b->crc[i]); +} + +/** * igt_crc_to_string: * @crc: pipe CRC value to print * diff --git a/lib/igt_debugfs.h b/lib/igt_debugfs.h index 82850295..f158c338 100644 --- a/lib/igt_debugfs.h +++ b/lib/igt_debugfs.h @@ -87,6 +87,7 @@ enum intel_pipe_crc_source { bool igt_crc_is_null(igt_crc_t *crc); bool igt_crc_equal(igt_crc_t *a, igt_crc_t *b); +void igt_assert_crc_equal(igt_crc_t *a, igt_crc_t *b); char *igt_crc_to_string(igt_crc_t *crc); void igt_require_pipe_crc(void); |