CRC64 functions

modulename: crc64.ko

configname: CONFIG_CRC64

Linux Kernel Configuration
└─>Library routines
└─>CRC64 functions
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This option is provided for the case where no in-kernel-tree
modules require CRC64 functions, but a module built outside
the kernel tree does. Such modules that use library CRC64
functions require M here.

source code:
lib/crc64.c