[Intel-gfx] [PATCH igt] igt/kms_frontbuffer_tracking: Drop unsynchronized pageflip test

[Chris Wilson]

On Thu, Nov 10, 2016 at 12:20:51PM +0200, Petri Latvala wrote:
> On Thu, Nov 10, 2016 at 08:05:19AM +0000, Chris Wilson wrote:
> > A raw pageflip is nonblocking and asynchronous, but
> > kms_frontbuffer_tracking persumed that it was synchronous and completed
> > before the funtion returns. It doesn't, so the CRC could be sampled
> > before the flip completed.
> > 
> > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> > ---
> >  tests/kms_frontbuffer_tracking.c | 8 --------
> >  1 file changed, 8 deletions(-)
> > 
> > diff --git a/tests/kms_frontbuffer_tracking.c b/tests/kms_frontbuffer_tracking.c
> > index bc42701..343b124 100644
> > --- a/tests/kms_frontbuffer_tracking.c
> > +++ b/tests/kms_frontbuffer_tracking.c
> > @@ -122,7 +122,6 @@ struct test_mode {
> >  	 * and they exercise slightly different codepaths inside the Kernel. */
> >  	enum flip_type {
> >  		FLIP_PAGEFLIP,
> > -		FLIP_PAGEFLIP_EVENT,
> >  		FLIP_MODESET,
> >  		FLIP_PLANES,
> >  		FLIP_COUNT,
> > @@ -2322,11 +2321,6 @@ static void page_flip_for_params(struct modeset_params *params,
> >  	switch (type) {
> >  	case FLIP_PAGEFLIP:
> >  		rc = drmModePageFlip(drm.fd, params->crtc_id,
> > -				     params->fb.fb->fb_id, 0, NULL);
> > -		igt_assert_eq(rc, 0);
> > -		break;
> > -	case FLIP_PAGEFLIP_EVENT:
> > -		rc = drmModePageFlip(drm.fd, params->crtc_id,
> >  				     params->fb.fb->fb_id,
> >  				     DRM_MODE_PAGE_FLIP_EVENT, NULL);
> >  		igt_assert_eq(rc, 0);
> 
> This makes FLIP_PAGEFLIP pass DRM_MODE_PAGE_FLIP_EVENT. Is that intentional?

Yes. The FLIP_PAGEFLIP code is broken. After removal only
FLIP_PAGEFLIP_EVENT remains and so differentiating it is pointless.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre