[Intel-gfx] [PATCH 5/8] drm/i915: Make execlist port count variable

[Chris Wilson]

Quoting Mika Kuoppala (2017-09-20 15:37:02)
> As we emulate execlists on top of the GuC workqueue, it is not
> restricted to just 2 ports and we can increase that number arbitrarily
> to trade-off queue depth (i.e. scheduling latency) against pipeline
> bubbles.
> 
> v2: rebase. better commit msg (Chris)
> 
> Signed-off-by: Mika Kuoppala <mika.kuoppala at intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris