diff mbox series

drm/i915/gt: Start timeslice on partial submission

Message ID 20200528205727.20309-1-chris@chris-wilson.co.uk (mailing list archive)
State New, archived
Headers show
Series drm/i915/gt: Start timeslice on partial submission | expand

Commit Message

Chris Wilson May 28, 2020, 8:57 p.m. UTC
We may choose to only submit ELSP[0], even though we have sufficient
requests to fill the whole ELSP. Normally, we only start timeslicing if
we fill more than one port, but in this case we need to start
timeslicing for the queue that we choose not to submit.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
 drivers/gpu/drm/i915/gt/intel_lrc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Comments

Mika Kuoppala May 28, 2020, 9:01 p.m. UTC | #1
Chris Wilson <chris@chris-wilson.co.uk> writes:

> We may choose to only submit ELSP[0], even though we have sufficient
> requests to fill the whole ELSP. Normally, we only start timeslicing if
> we fill more than one port, but in this case we need to start
> timeslicing for the queue that we choose not to submit.

If this is last in a line, it makes sense to make sure
that we get woken up.

Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>

>
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
> ---
>  drivers/gpu/drm/i915/gt/intel_lrc.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
> index 69fff36ec0cc..6fc0966b75ff 100644
> --- a/drivers/gpu/drm/i915/gt/intel_lrc.c
> +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
> @@ -2358,8 +2358,10 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
>  				if (last->context == rq->context)
>  					goto done;
>  
> -				if (i915_request_has_sentinel(last))
> +				if (i915_request_has_sentinel(last)) {
> +					start_timeslice(engine, rq_prio(rq));
>  					goto done;
> +				}
>  
>  				/*
>  				 * If GVT overrides us we only ever submit
> -- 
> 2.20.1
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 69fff36ec0cc..6fc0966b75ff 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -2358,8 +2358,10 @@  static void execlists_dequeue(struct intel_engine_cs *engine)
 				if (last->context == rq->context)
 					goto done;
 
-				if (i915_request_has_sentinel(last))
+				if (i915_request_has_sentinel(last)) {
+					start_timeslice(engine, rq_prio(rq));
 					goto done;
+				}
 
 				/*
 				 * If GVT overrides us we only ever submit