Re: [PATCH v1] drm/i915/gt: Use ENGINE_TRACE for tracing.

[Andi Shyti <andi.shyti@linux.intel.com>]

Hi Nitin,

On Wed, Oct 23, 2024 at 12:18:29PM +0530, Nitin Gote wrote:
> Instead of drm_err(), use ENGINE_TRACE for tracing.

Patch looks good, but can you please be a bit more specific in
the log why ENGINE_TRACE() is preferrable over drm_err?

Thanks,
Andi

> Signed-off-by: Nitin Gote <nitin.r.gote@intel.com>
> ---
>  .../gpu/drm/i915/gt/intel_ring_submission.c   | 20 +++++++++----------
>  1 file changed, 10 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
> index 32f3b52a183a..74d6a2b703ac 100644
> --- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c
> +++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
> @@ -282,16 +282,16 @@ static int xcs_resume(struct intel_engine_cs *engine)
>  	return 0;
>  
>  err:
> -	drm_err(&engine->i915->drm,
> -		"%s initialization failed; "
> -		"ctl %08x (valid? %d) head %08x [%08x] tail %08x [%08x] start %08x [expected %08x]\n",
> -		engine->name,
> -		ENGINE_READ(engine, RING_CTL),
> -		ENGINE_READ(engine, RING_CTL) & RING_VALID,
> -		ENGINE_READ(engine, RING_HEAD), ring->head,
> -		ENGINE_READ(engine, RING_TAIL), ring->tail,
> -		ENGINE_READ(engine, RING_START),
> -		i915_ggtt_offset(ring->vma));
> +	ENGINE_TRACE(engine,
> +		     "initialization failed; "
> +		     "ctl %08x (valid? %d) head %08x [%08x] tail %08x [%08x] start %08x [expected %08x]\n",
> +		     ENGINE_READ(engine, RING_CTL),
> +		     ENGINE_READ(engine, RING_CTL) & RING_VALID,
> +		     ENGINE_READ(engine, RING_HEAD), ring->head,
> +		     ENGINE_READ(engine, RING_TAIL), ring->tail,
> +		     ENGINE_READ(engine, RING_START),
> +		     i915_ggtt_offset(ring->vma));
> +	GEM_TRACE_DUMP();
>  	return -EIO;
>  }
>  
> -- 
> 2.25.1