[Intel-gfx] [PATCH 4/4] drm/i915: Emit dma-fence (and execlists submit) first from signaler

[Joonas Lahtinen]

On la, 2017-01-21 at 09:28 +0000, Chris Wilson wrote:
> When introduced, I thought that reducing client latency from the
> signaler was the priority. Since its inception the signaler has become
> responsible for keeping the execlists full, via the dma-fence. As this
> is very important to minimise overall execution time, signal the
> dma-fence first and then signal any waiting clients.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Do we have a clear testcase where this can be observed?

Gladly it's well isolated to one patch, so should make bisecting easier
during testing;

Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>

Regards, Joonas
-- 
Joonas Lahtinen
Open Source Technology Center
Intel Corporation