CONFIG_GENERIC_STRNLEN_USER (not configurable)

modulename: strnlen_user.ko

configname: CONFIG_GENERIC_STRNLEN_USER

Linux Kernel Configuration
└─>Library routines
└─>GENERIC_STRNLEN_USER
In linux kernel since version 3.1 (release Date: 2011-10-24)  
source code:
lib/strnlen_user.c