drm/i915: implement fastpath for overlay flip waiting
authorDaniel Vetter <daniel.vetter@ffwll.ch>
Tue, 15 Sep 2009 20:57:36 +0000 (22:57 +0200)
committerEric Anholt <eric@anholt.net>
Thu, 5 Nov 2009 22:47:09 +0000 (14:47 -0800)
As long as the gpu can keep up, neither the cpu (waiting for gpu)
nore the gpu (waiting for vblank to do an overlay flip) stalls.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Eric Anholt <eric@anholt.net>

No differences found