[PATCH] drm/i915: Print the hw context status is debugfs

[Ben Widawsky <ben@bwidawsk.net>]

Print out the HW context object information per ring. Even though the
existing code only utilizes the render ring, it's simple enough to
support future expansion.

I had this in a patch somewhere in a rev of the original implementation,
but I must have lost it.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index ac75566..367a039 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1530,7 +1530,8 @@ static int i915_context_status(struct seq_file *m, void *unused)
 	struct drm_info_node *node = (struct drm_info_node *) m->private;
 	struct drm_device *dev = node->minor->dev;
 	drm_i915_private_t *dev_priv = dev->dev_private;
-	int ret;
+	struct intel_ring_buffer *ring;
+	int ret, i;
 
 	ret = mutex_lock_interruptible(&dev->mode_config.mutex);
 	if (ret)
@@ -1548,6 +1549,14 @@ static int i915_context_status(struct seq_file *m, void *unused)
 		seq_printf(m, "\n");
 	}
 
+	for_each_ring(ring, dev_priv, i) {
+		if (ring->default_context) {
+			seq_printf(m, "HW context %s ring ", ring->name);
+			describe_obj(m, ring->default_context->obj);
+			seq_printf(m, "\n");
+		}
+	}
+
 	mutex_unlock(&dev->mode_config.mutex);
 
 	return 0;
-- 
1.8.1.3