CONFIG_LOCKDEP (not configurable)

modulename: lockdep_proc.ko

and/or

lockdep.ko

configname: CONFIG_LOCKDEP

Linux Kernel Configuration
└─>Lock Debugging (spinlocks, mutexes, etc...)
└─>LOCKDEP
In linux kernel since version 2.6.18 (release Date: 2006-09-19)  
source code:
kernel/locking/lockdep.c
selects
CONFIG_STACKTRACE
CONFIG_FRAME_POINTER
CONFIG_KALLSYMS
CONFIG_KALLSYMS_ALL