DRM_IOCTL_FREE_BUFS 852 include/uapi/drm/drm.h #define DRM_IOCTL_FREE_BUFS DRM_IOW( 0x1a, struct drm_buf_free) DRM_IOCTL_FREE_BUFS 852 tools/include/uapi/drm/drm.h #define DRM_IOCTL_FREE_BUFS DRM_IOW( 0x1a, struct drm_buf_free)