CONFIG_STACKDEPOT (not configurable)

modulename: stackdepot.ko

configname: CONFIG_STACKDEPOT

Linux Kernel Configuration
└─>Library routines
└─>STACKDEPOT
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Stack depot: stack trace storage that avoids duplication

source code:
lib/stackdepot.c