CONFIG_GENERIC_LIB_CMPDI2 (not configurable)

modulename: cmpdi2.ko

configname: CONFIG_GENERIC_LIB_CMPDI2

Linux Kernel Configuration
└─>GENERIC_LIB_CMPDI2
In linux kernel since version 4.2 (release Date: 2015-08-30)  
source code:
lib/cmpdi2.c