Quoting Imre Deak (2017-10-31 13:44:47) > Doing modeset on internal panels may have a considerable overhead due to > the panel specific power sequencing delays. To avoid long test runtimes > limit the runtime of each subtest. Randomize the plane/pipe combinations > to preserve the test coverage on such panels at least over multiple test > runs. > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103334 > Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> > Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx> > --- > tests/kms_atomic_transition.c | 175 ++++++++++++++++++++++++++++++++++++------ > 1 file changed, 150 insertions(+), 25 deletions(-) > > diff --git a/tests/kms_atomic_transition.c b/tests/kms_atomic_transition.c > index 4c295125..ac67fc3a 100644 > --- a/tests/kms_atomic_transition.c > +++ b/tests/kms_atomic_transition.c > @@ -39,6 +39,14 @@ > #define DRM_CAP_CURSOR_HEIGHT 0x9 > #endif > > +#define MAX_SUBTEST_DURATION_NS (20ULL * NSEC_PER_SEC) > + > +struct test_config { > + igt_display_t *display; > + bool user_seed; > + int seed; > +}; > + > struct plane_parms { > struct igt_fb *fb; > uint32_t width, height; > @@ -401,6 +409,28 @@ static void wait_for_transition(igt_display_t *display, enum pipe pipe, bool non > } > } > > +/* Copied from https://benpfaff.org/writings/clc/shuffle.html */ > +static void shuffle_array(uint32_t *array, int size, int seed) > +{ > + int i; > + > + for (i = 0; i < size; i++) { > + int j = i + rand() / (RAND_MAX / (size - i) + 1); > + > + igt_swap(array[i], array[j]); > + } > +} igt_permute_array() Not saying anything, but I was told using CI for stochastic coverage was a flat no... -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
