Stack backtrace support

modulename: stacktrace.ko

configname: CONFIG_STACKTRACE

Linux Kernel Configuration
└─>Kernel hacking
└─>Stack backtrace support
In linux kernel since version 2.6.18 (release Date: 2006-09-19)  
This option causes the kernel to create a /proc/pid/stack for
every process, showing its current stack trace.
It is also used by various kernel debugging features that require
stack trace generation.

source code:
arch/openrisc/kernel/stacktrace.c