__cpu_to_be64      36 include/uapi/linux/byteorder/big_endian.h #define __cpu_to_be64(x) ((__force __be64)(__u64)(x))
__cpu_to_be64      36 include/uapi/linux/byteorder/little_endian.h #define __cpu_to_be64(x) ((__force __be64)__swab64((x)))