[Intel-gfx] [PATCH] drm/i915: Print execlists restart after reset

[Mika Kuoppala]

Chris Wilson <chris at chris-wilson.co.uk> writes:

> After resetting, show the requests that each engine restarts from in the
> debug log.
>
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Mika Kuoppala <mika.kuoppala at intel.com>

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

> ---
>  drivers/gpu/drm/i915/intel_lrc.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
> index ad55564350b4..39a4eaadd0a7 100644
> --- a/drivers/gpu/drm/i915/intel_lrc.c
> +++ b/drivers/gpu/drm/i915/intel_lrc.c
> @@ -1257,6 +1257,11 @@ static int intel_init_workaround_bb(struct intel_engine_cs *engine)
>  	return ret;
>  }
>  
> +static u32 port_seqno(struct execlist_port *port)
> +{
> +	return port->request ? port->request->global_seqno : 0;
> +}
> +
>  static int gen8_init_common_ring(struct intel_engine_cs *engine)
>  {
>  	struct drm_i915_private *dev_priv = engine->i915;
> @@ -1282,6 +1287,10 @@ static int gen8_init_common_ring(struct intel_engine_cs *engine)
>  	/* After a GPU reset, we may have requests to replay */
>  	clear_bit(ENGINE_IRQ_EXECLIST, &engine->irq_posted);
>  	if (!i915.enable_guc_submission && !execlists_elsp_idle(engine)) {
> +		DRM_DEBUG_DRIVER("Restarting %s from requests [0x%x, 0x%x]\n",
> +			 engine->name,
> +			 port_seqno(&engine->execlist_port[0]),
> +			 port_seqno(&engine->execlist_port[1]));
>  		engine->execlist_port[0].count = 0;
>  		engine->execlist_port[1].count = 0;
>  		execlists_submit_ports(engine);
> -- 
> 2.11.0
>
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