CONFIG_TRACING_MAP (not configurable)

modulename: tracing_map.ko

configname: CONFIG_TRACING_MAP

Linux Kernel Configuration
└─>Tracers
└─>TRACING_MAP
In linux kernel since version 3.10 (release Date: 2013-06-30)  
tracing_map is a special-purpose lock-free map for tracing,
separated out as a stand-alone facility in order to allow it
to be shared between multiple tracers. It isn't meant to be
generally used outside of that context, and is normally
selected by tracers that use it.

source code: