[Intel-gfx] [PATCH 4/4] drm/i915: Emit dma-fence (and execlists submit) first from signaler
joonas.lahtinen at linux.intel.com
Mon Jan 23 11:37:22 UTC 2017
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
Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Open Source Technology Center
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