CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED (not configurable)

modulename: devmem_is_allowed.ko

configname: CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED

Linux Kernel Configuration
└─>GENERIC_LIB_DEVMEM_IS_ALLOWED
In linux kernel since version 5.2 (release Date: 2019-07-07)  
source code:
lib/devmem_is_allowed.c