Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> writes:
> Add a few telltales to see when timeslicing is being enabled.
>
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/gt/intel_lrc.c | 20 +++++++++++++++++---
> drivers/gpu/drm/i915/i915_scheduler.c | 6 ++++++
> 2 files changed, 23 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
> index 744737e57d1d..55bf3cdf3b38 100644
> --- a/drivers/gpu/drm/i915/gt/intel_lrc.c
> +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
> @@ -1814,16 +1814,25 @@ active_timeslice(const struct intel_engine_cs *engine)
>
> static void set_timeslice(struct intel_engine_cs *engine)
> {
> + unsigned long duration;
> +
> if (!intel_engine_has_timeslices(engine))
> return;
>
> - set_timer_ms(&engine->execlists.timer, active_timeslice(engine));
> + duration = active_timeslice(engine);
> + ENGINE_TRACE(engine, "bump timeslicing, interval:%lu", duration);
> +
> + set_timer_ms(&engine->execlists.timer, duration);
> }
>
> static void start_timeslice(struct intel_engine_cs *engine)
> {
> struct intel_engine_execlists *execlists = &engine->execlists;
> - int prio = queue_prio(execlists);
> + const int prio = queue_prio(execlists);
> + unsigned long duration;
> +
> + if (!intel_engine_has_timeslices(engine))
> + return;
>
> WRITE_ONCE(execlists->switch_priority_hint, prio);
> if (prio == INT_MIN)
> @@ -1832,7 +1841,12 @@ static void start_timeslice(struct intel_engine_cs *engine)
> if (timer_pending(&execlists->timer))
> return;
>
> - set_timer_ms(&execlists->timer, timeslice(engine));
> + duration = timeslice(engine);
> + ENGINE_TRACE(engine,
> + "start timeslicing, prio:%d, interval:%lu",
> + prio, duration);
> +
> + set_timer_ms(&execlists->timer, duration);
> }
>
> static void record_preemption(struct intel_engine_execlists *execlists)
> diff --git a/drivers/gpu/drm/i915/i915_scheduler.c b/drivers/gpu/drm/i915/i915_scheduler.c
> index 68b06a7ba667..065176cb0258 100644
> --- a/drivers/gpu/drm/i915/i915_scheduler.c
> +++ b/drivers/gpu/drm/i915/i915_scheduler.c
> @@ -209,6 +209,12 @@ static void kick_submission(struct intel_engine_cs *engine,
> if (!inflight)
> goto unlock;
>
> + ENGINE_TRACE(engine,
> + "bumping queue-priority-hint:%d for rq:%llx:%lld, inflight:%llx:%lld prio %d\n",
> + prio,
> + rq->fence.context, rq->fence.seqno,
> + inflight->fence.context, inflight->fence.seqno,
> + inflight->sched.attr.priority);
> engine->execlists.queue_priority_hint = prio;
>
> /*
> --
> 2.20.1
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
