intel_frontbuffer_invalidate
TRACE_EVENT(intel_frontbuffer_invalidate,
intel_frontbuffer_invalidate(front, ORIGIN_DIRTYFB);
intel_frontbuffer_invalidate(to_frontbuffer(ifbdev), ORIGIN_CPU);
intel_frontbuffer_invalidate(&front->base, origin);
if (intel_frontbuffer_invalidate(&front->base, ORIGIN_CS))