diff options
| author | Feceoru, Gabriel <gabriel.feceoru@intel.com> | 2016-05-13 14:45:09 +0300 |
|---|---|---|
| committer | Marius Vlad <marius.c.vlad@intel.com> | 2016-05-16 18:20:41 +0300 |
| commit | 5cc3175ca5a0374c17bd201ba5a35ef4ff076003 (patch) | |
| tree | 45e0463e74f9a0803c195bb7f386c5898fdcdfc0 /tests/kms_flip.c | |
| parent | c785a89ee61807d2e8d76847481225e649aa5aec (diff) | |
tests/kms_flip: Adjust tolerance when counting frames
basic-flip-vs-wf_vblank subtest sometimes fails asserting counted frames to
be aproximately equal with the estimated number.
This is a false negative, one of the reasons being the precision lost when
truncating a fractional number.
Fixed this by using floating point arithmetic.
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=95380 [mvlad]
Signed-off-by: Gabriel Feceoru <gabriel.feceoru@intel.com>
Signed-off-by: Marius Vlad <marius.c.vlad@intel.com>
Diffstat (limited to 'tests/kms_flip.c')
| -rw-r--r-- | tests/kms_flip.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/tests/kms_flip.c b/tests/kms_flip.c index eda2fcc9..6ec97d0a 100644 --- a/tests/kms_flip.c +++ b/tests/kms_flip.c @@ -1182,13 +1182,13 @@ static void check_final_state(struct test_output *o, struct event_state *es, /* Verify we drop no frames, but only if it's not a TV encoder, since * those use some funny fake timings behind userspace's back. */ if (o->flags & TEST_CHECK_TS && !analog_tv_connector(o)) { - int expected; + double expected; int count = es->count; count *= o->seq_step; - expected = elapsed / frame_time(o); - igt_assert_f(count >= expected * 99/100 && count <= expected * 101/100, - "dropped frames, expected %d, counted %d, encoder type %d\n", + expected = (double)elapsed / frame_time(o); + igt_assert_f(fabs((double)count - expected)/expected <= 0.01, + "dropped frames, expected %f, counted %d, encoder type %d\n", expected, count, o->kencoder[0]->encoder_type); } } |