[Intel-gfx] [PATCH 12/13 v4] drm/i915: Debugfs interface for GuC submission statistics

[O'Rourke, Tom]

On Thu, Jul 09, 2015 at 07:29:13PM +0100, Dave Gordon wrote:
> This provides a means of reading status and counts relating
> to GuC actions and submissions.
> 
> v2:
>     Remove surplus blank line in output [Chris Wilson]
> 
> v4:
>     Rebased
> 
> Signed-off-by: Dave Gordon <david.s.gordon at intel.com>
> Signed-off-by: Alex Dai <yu.dai at intel.com>
> ---
Reviewed-by: Tom O'Rourke <Tom.O'Rourke at intel.com>
>  drivers/gpu/drm/i915/i915_debugfs.c | 40 +++++++++++++++++++++++++++++++++++++
>  1 file changed, 40 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index d93732a..cebb93c 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -2397,6 +2397,45 @@ static int i915_guc_load_status_info(struct seq_file *m, void *data)
>  	return 0;
>  }
>  
> +static int i915_guc_info(struct seq_file *m, void *data)
> +{
> +	struct drm_info_node *node = m->private;
> +	struct drm_device *dev = node->minor->dev;
> +	struct drm_i915_private *dev_priv = dev->dev_private;
> +	struct intel_guc guc;
> +	struct i915_guc_client client = { .client_obj = 0 };
> +
> +	if (!HAS_GUC_SCHED(dev_priv->dev))
> +		return 0;
> +
> +	/* Take a local copy of the GuC data, so we can dump it at leisure */
> +	spin_lock(&dev_priv->guc.host2guc_lock);
> +	guc = dev_priv->guc;
> +	if (guc.execbuf_client) {
> +		spin_lock(&guc.execbuf_client->wq_lock);
> +		client = *guc.execbuf_client;
> +		spin_unlock(&guc.execbuf_client->wq_lock);
> +	}
> +	spin_unlock(&dev_priv->guc.host2guc_lock);
> +
> +	seq_printf(m, "GuC total action count: %llu\n", guc.action_count);
> +	seq_printf(m, "GuC last action command: 0x%x\n", guc.action_cmd);
> +	seq_printf(m, "GuC last action status: 0x%x\n", guc.action_status);
> +
> +	seq_printf(m, "GuC action failure count: %u\n", guc.action_fail);
> +	seq_printf(m, "GuC last action error code: %d\n", guc.action_err);
> +
> +	seq_printf(m, "\nGuC execbuf client @ %p:\n", guc.execbuf_client);
> +	seq_printf(m, "\tTotal submissions: %llu\n", client.submissions);
> +	seq_printf(m, "\tFailed to queue: %u\n", client.q_fail);
> +	seq_printf(m, "\tFailed doorbell: %u\n", client.b_fail);
> +	seq_printf(m, "\tLast submission result: %d\n", client.retcode);
> +
> +	/* Add more as required ... */
> +
> +	return 0;
> +}
> +
>  static int i915_guc_log_dump(struct seq_file *m, void *data)
>  {
>  	struct drm_info_node *node = m->private;
> @@ -5139,6 +5178,7 @@ static const struct drm_info_list i915_debugfs_list[] = {
>  	{"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
>  	{"i915_gem_hws_vebox", i915_hws_info, 0, (void *)VECS},
>  	{"i915_gem_batch_pool", i915_gem_batch_pool_info, 0},
> +	{"i915_guc_info", i915_guc_info, 0},
>  	{"i915_guc_load_status", i915_guc_load_status_info, 0},
>  	{"i915_guc_log_dump", i915_guc_log_dump, 0},
>  	{"i915_frequency_info", i915_frequency_info, 0},
> -- 
> 1.9.1
>