next_vblank 599 drivers/gpu/drm/tilcdc/tilcdc_crtc.c ktime_t next_vblank; next_vblank 604 drivers/gpu/drm/tilcdc/tilcdc_crtc.c next_vblank = ktime_add_us(tilcdc_crtc->last_vblank, next_vblank 606 drivers/gpu/drm/tilcdc/tilcdc_crtc.c tdiff = ktime_to_us(ktime_sub(next_vblank, ktime_get()));