Re: [PATCH 1/2] drm/i915: Consolidate reset-request debug message

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Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> writes:

> Move the pair of messages to the common callsite where it makes sense to
> include a bit more information about which request is being reset.
>
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/i915_reset.c       | 6 ++++++
>  drivers/gpu/drm/i915/intel_lrc.c        | 1 -
>  drivers/gpu/drm/i915/intel_ringbuffer.c | 2 --
>  3 files changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_reset.c b/drivers/gpu/drm/i915/i915_reset.c
> index 3fbaa72a9eac..3c08e08837d0 100644
> --- a/drivers/gpu/drm/i915/i915_reset.c
> +++ b/drivers/gpu/drm/i915/i915_reset.c
> @@ -98,6 +98,12 @@ static void context_mark_innocent(struct i915_gem_context *ctx)
>  
>  void i915_reset_request(struct i915_request *rq, bool guilty)
>  {
> +	GEM_TRACE("%s rq=%llx:%lld, guilty? %s\n",
> +		  rq->engine->name,
> +		  rq->fence.context,
> +		  rq->fence.seqno,
> +		  yesno(guilty));
> +
>  	lockdep_assert_held(&rq->engine->timeline.lock);
>  	GEM_BUG_ON(i915_request_completed(rq));
>  
> diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
> index 748352d513d6..dc3de09c7586 100644
> --- a/drivers/gpu/drm/i915/intel_lrc.c
> +++ b/drivers/gpu/drm/i915/intel_lrc.c
> @@ -1957,7 +1957,6 @@ static void execlists_reset(struct intel_engine_cs *engine, bool stalled)
>  	/* Following the reset, we need to reload the CSB read/write pointers */
>  	reset_csb_pointers(&engine->execlists);
>  
> -	GEM_TRACE("%s stalled? %s\n", engine->name, yesno(stalled));

You will lose a trace in this spot if no request can be found.
Looks of it, still redundant as we get that from prior traces.

Reviewed-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>


>  	if (!rq)
>  		goto out_unlock;
>  
> diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
> index cc4fcd89b845..f26f5cc1584c 100644
> --- a/drivers/gpu/drm/i915/intel_ringbuffer.c
> +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
> @@ -757,8 +757,6 @@ static void reset_ring(struct intel_engine_cs *engine, bool stalled)
>  		}
>  	}
>  
> -	GEM_TRACE("%s stalled? %s\n", engine->name, yesno(stalled));
> -
>  	/*
>  	 * The guilty request will get skipped on a hung engine.
>  	 *
> -- 
> 2.20.1
>
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