From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Tue, 15 Sep 2009 20:57:36 +0000 (+0200)
Subject: drm/i915: implement fastpath for overlay flip waiting
X-Git-Tag: v2.6.33-rc1~323^2~5^2~56
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5a5a0c64a99d7542c48c99d1a8bbb49e665842be;p=pandora-kernel.git

drm/i915: implement fastpath for overlay flip waiting

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>
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