[Intel-gfx] [PATCH 7/8] drm/i915: Keep track of reserved execlist ports

[Chris Wilson]

Quoting Mika Kuoppala (2017-09-20 15:37:04)
> To further enchance port processing, keep track of
> reserved ports. This way we can iterate only the used subset
> of port space. Note that we lift the responsibility of
> execlists_submit_request() to inspect hw availability and
> always do dequeuing. This is to ensure that only the irq
> handler will be responsible for keeping track of available ports.
> 
> v2: rebase, comment fix, READ_ONCE only outside of irq handler (Chris)
> 
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Michał Winiarski <michal.winiarski at intel.com>
> Signed-off-by: Mika Kuoppala <mika.kuoppala at intel.com>

Ok, doesn't look hideous. I need to look at it with a clear head, but for
now, could you check scripts/bloat-o-meter for my usual quick guide on
how much gcc likes it?
-Chris