drm: add vblank event trace point
Emit a trace point for vblank events. This can be helpful for mapping
drawing activity against the vblank frequency and period.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index a263b70..6d201a8 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -34,6 +34,7 @@
*/
#include "drmP.h"
+#include "drm_trace.h"
#include <linux/interrupt.h> /* For task queue support */
#include <linux/slab.h>
@@ -754,6 +755,8 @@
}
spin_unlock_irqrestore(&dev->event_lock, flags);
+
+ trace_drm_vblank_event(crtc, seq);
}
/**