diff options
| -rw-r--r-- | tests/prime_vgem.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/tests/prime_vgem.c b/tests/prime_vgem.c index 85a27b69..94632452 100644 --- a/tests/prime_vgem.c +++ b/tests/prime_vgem.c @@ -713,15 +713,23 @@ static void flip_to_vgem(int i915, int vgem, /* And then the flip is completed as soon as it is ready */ if (!hang) { - union drm_wait_vblank wait; + unsigned long miss; - memset(&wait, 0, sizeof(wait)); - wait.request.type = DRM_VBLANK_RELATIVE | pipe_select(0); - wait.request.sequence = 10; - do_or_die(drmIoctl(i915, DRM_IOCTL_WAIT_VBLANK, &wait)); - - vgem_fence_signal(vgem, fence); + /* Signal fence at the start of the next vblank */ get_vblank(i915, 0, DRM_VBLANK_NEXTONMISS); + vgem_fence_signal(vgem, fence); + + miss = 0; + igt_until_timeout(5) { + get_vblank(i915, 0, DRM_VBLANK_NEXTONMISS); + if (poll(&pfd, 1, 0)) + break; + miss++; + } + if (miss > 1) { + igt_warn("Missed %lu vblanks after signaling before flip was completed\n", + miss); + } igt_assert_eq(poll(&pfd, 1, 0), 1); } |