[Intel-gfx] [PATCH] drm/i915/gt: Schedule request retirement when signaler idles

[Joonas Lahtinen]

Quoting Chris Wilson (2019-12-18 23:14:38)
> Very similar to commit 4f88f8747fa4 ("drm/i915/gt: Schedule request
> retirement when timeline idles"), but this time instead of coupling into
> the execlists CS event interrupt, we couple into the breadcrumb
> interrupt and queue a timeline's retirement when the last signaler is
> completed. This should allow us to more rapidly park ringbuffer
> submission, and so help reduce power consumption on older systems.
> 
> References: 4f88f8747fa4 ("drm/i915/gt: Schedule request retirement when timeline idles")
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>

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

Regards, Joonas