KGDB_KDB: include kdb frontend for kgdb

modulename: kdb.ko

and/or

trace_kdb.ko

configname: CONFIG_KGDB_KDB

Linux Kernel Configuration
└─>Kernel hacking
└─>Generic Kernel Debugging Instruments
└─>KGDB: kernel debugger
└─>KGDB_KDB: include kdb frontend for kgdb
In linux kernel since version 2.6.35 (release Date: 2010-08-01)  
KDB frontend for kernel

source code:
kernel/trace/trace_kdb.c
depends
CONFIG_KGDB