Stack utilization instrumentation

configname: CONFIG_DEBUG_STACK_USAGE

Linux Kernel Configuration
└─>Kernel hacking
└─>Memory Debugging
└─>Stack utilization instrumentation
In linux kernel since version 2.6.12  
Enables the display of the minimum amount of free stack which each
task has ever had available in the sysrq-T and sysrq-P debug output.

This option will slow down process creation somewhat.