[Intel-gfx] [PATCH] drm/i915: Fix OGLC performance regression on 945

[Eric Anholt]

On Wed, 10 Feb 2010 01:54:24 +0800, Li Peng <peng.li at linux.intel.com> wrote:
> He Shuang reported an OGLC performance regression introduced in the patch
> "enable memory self refresh on 9xx", In that patch, SR on 945 is disabled
> everytime when calling intel_mark_busy(), while too much of such operation
> will impact performance. Actually disable SR is necessary only when GPU and
> Crtc changing from idle to busy. This patch make such optimization.
> 
> It fixes upstream bug
> http://bugs.freedesktop.org/show_bug.cgi?id=26422

Applied to -next.  Thanks!
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