CONFIG_ASSOCIATIVE_ARRAY (not configurable)

modulename: assoc_array.ko

configname: CONFIG_ASSOCIATIVE_ARRAY

Linux Kernel Configuration
└─>Library routines
└─>ASSOCIATIVE_ARRAY
In linux kernel since version 3.13 (release Date: 2014-01-19)  
Generic associative array. Can be searched and iterated over whilst
it is being modified. It is also reasonably quick to search and
modify. The algorithms are non-recursive, and the trees are highly
capacious.

See:

Documentation/core-api/assoc_array.rst

for more information.

source code: