DRM_IOCTL_WAIT_VBLANK 950 drivers/gpu/drm/drm_ioc32.c DRM_IOCTL32_DEF(DRM_IOCTL_WAIT_VBLANK, compat_drm_wait_vblank), DRM_IOCTL_WAIT_VBLANK 643 drivers/gpu/drm/drm_ioctl.c DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank_ioctl, DRM_UNLOCKED),