drm/radeon: add trace_radeon_vm_flush

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon_vm.c b/drivers/gpu/drm/radeon/radeon_vm.c
index f0a8cd7..2a2509e 100644
--- a/drivers/gpu/drm/radeon/radeon_vm.c
+++ b/drivers/gpu/drm/radeon/radeon_vm.c
@@ -240,6 +240,7 @@
 	/* if we can't remember our last VM flush then flush now! */
 	/* XXX figure out why we have to flush all the time */
 	if (!vm->last_flush || true || pd_addr != vm->pd_gpu_addr) {
+		trace_radeon_vm_flush(pd_addr, ring, vm->id);
 		vm->pd_gpu_addr = pd_addr;
 		radeon_ring_vm_flush(rdev, ring, vm);
 	}