[Intel-gfx] [PATCH 12/12] drm/i915: only nuke FBC when a drawing operation triggers a flush

[Chris Wilson]

On Fri, Nov 13, 2015 at 05:53:44PM -0200, Paulo Zanoni wrote:

drm/i915: Only trigger a FBC recompress after flushing a drawing operation

> There's no need to stop and restart FBC: a nuke should be fine.

There's no need to stop and restart FBC, which is quite expensive as we
have to revalidate the CRTC state and reallocate resources, after flushing
a drawing operation (as the CRTC state hasn't changed). A nuke (recompress)
should be fine.

> v2: Make it simpler (Chris).
> v3: Rewrite the patch again due to patch order changes.
> 
> Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>

If you can make the changelog understandable,
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre