drm/i915: Include ring->emit in debugging

Include ring->emit and ring->space alongside ring->(head,tail) when
printing debug information.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180307134226.25492-4-chris@chris-wilson.co.uk

drivers/gpu/drm/i915/i915_debugfs.c

@@ -1922,8 +1922,8 @@ static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
 
 static void describe_ctx_ring(struct seq_file *m, struct intel_ring *ring)
 {
-	seq_printf(m, " (ringbuffer, space: %d, head: %u, tail: %u)",
-		   ring->space, ring->head, ring->tail);
+	seq_printf(m, " (ringbuffer, space: %d, head: %u, tail: %u, emit: %u)",
+		   ring->space, ring->head, ring->tail, ring->emit);
 }
 
 static int i915_context_status(struct seq_file *m, void *unused)

drivers/gpu/drm/i915/intel_engine_cs.c

@@ -1935,6 +1935,10 @@ void intel_engine_dump(struct intel_engine_cs *engine,
 			   rq->ring->head);
 		drm_printf(m, "\t\tring->tail:   0x%08x\n",
 			   rq->ring->tail);
+		drm_printf(m, "\t\tring->emit:   0x%08x\n",
+			   rq->ring->emit);
+		drm_printf(m, "\t\tring->space:  0x%08x\n",
+			   rq->ring->space);
 	}
 
 	rcu_read_unlock();