[Intel-gfx] Patches for performance improvement

[Daniel Vetter]

On Mon, Aug 26, 2013 at 10:16 AM, Ville Syrjälä
<ville.syrjala at linux.intel.com> wrote:
> Maybe someone should just start pulling in the drm_flip_helper and
> associated code from the atomic code to make this feasible. The new
> event type I added there would also be suitable for this purpose as
> it carries the plane id and information on which fb is freed by the
> operation. The other option is to just add a new event, and disallow
> another setplane until the previous has completed (maybe try to
> generalize the current page flip code a bit to handle sprites as
> well as primary planes?)

I think extending the current pageflip ioctl to planes would be a
suitable stop-gap measure until we have nuclear pageflips for real.
It's only a 90% solution though since we can't update anything else
than the base address with the current pageflip ioctl.

Actually I think doing this would be a neat way to start pulling in
parts of the nuclear pageflip code and getting all the flip
complete/event signalling straigthened out (and properly tested with
igt like the primary plane flips).
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch