DRM_IOCTL_LOCK    872 include/uapi/drm/drm.h #define DRM_IOCTL_LOCK			DRM_IOW( 0x2a, struct drm_lock)
DRM_IOCTL_LOCK    872 tools/include/uapi/drm/drm.h #define DRM_IOCTL_LOCK			DRM_IOW( 0x2a, struct drm_lock)