CONFIG_XXHASH (not configurable)

modulename: xxhash.ko

configname: CONFIG_XXHASH

Linux Kernel Configuration
└─>Library routines
└─>XXHASH
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
lib/xxhash.c
is depended by
CONFIG_NFS_FS
CONFIG_KSM