drm/i915: add tracepoints for flip requests & completions

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/i915/i915_trace.h

@@ -262,6 +262,42 @@ DEFINE_EVENT(i915_ring, i915_ring_wait_end,
 	    TP_ARGS(dev)
 );
 
+TRACE_EVENT(i915_flip_request,
+	    TP_PROTO(int plane, struct drm_gem_object *obj),
+
+	    TP_ARGS(plane, obj),
+
+	    TP_STRUCT__entry(
+		    __field(int, plane)
+		    __field(struct drm_gem_object *, obj)
+		    ),
+
+	    TP_fast_assign(
+		    __entry->plane = plane;
+		    __entry->obj = obj;
+		    ),
+
+	    TP_printk("plane=%d, obj=%p", __entry->plane, __entry->obj)
+);
+
+TRACE_EVENT(i915_flip_complete,
+	    TP_PROTO(int plane, struct drm_gem_object *obj),
+
+	    TP_ARGS(plane, obj),
+
+	    TP_STRUCT__entry(
+		    __field(int, plane)
+		    __field(struct drm_gem_object *, obj)
+		    ),
+
+	    TP_fast_assign(
+		    __entry->plane = plane;
+		    __entry->obj = obj;
+		    ),
+
+	    TP_printk("plane=%d, obj=%p", __entry->plane, __entry->obj)
+);
+
 #endif /* _I915_TRACE_H_ */
 
 /* This part must be outside protection */

drivers/gpu/drm/i915/intel_display.c

@@ -33,6 +33,7 @@
 #include "intel_drv.h"
 #include "i915_drm.h"
 #include "i915_drv.h"
+#include "i915_trace.h"
 #include "drm_dp_helper.h"
 
 #include "drm_crtc_helper.h"
@@ -4650,6 +4651,8 @@ static void do_intel_finish_page_flip(struct drm_device *dev,
 	    atomic_dec_and_test(&obj_priv->pending_flip))
 		DRM_WAKEUP(&dev_priv->pending_flip_queue);
 	schedule_work(&work->work);
+
+	trace_i915_flip_complete(intel_crtc->plane, work->pending_flip_obj);
 }
 
 void intel_finish_page_flip(struct drm_device *dev, int pipe)
@@ -4781,6 +4784,8 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
 
 	mutex_unlock(&dev->struct_mutex);
 
+	trace_i915_flip_request(intel_crtc->plane, obj);
+
 	return 0;
 }