The trace-cmd(1) stack enables the Ftrace stack tracer within the kernel. The stack tracer enables the function tracer and at each function call within the kernel, the stack is checked. When a new maximum usage stack is discovered, it is recorded.
When no option is used, the current stack is displayed.
To enable the stack tracer, use the option --start, and to disable the stack tracer, use the option --stop. The output will be the maximum stack found since the start was enabled.
Use --reset to reset the stack counter to zero.
Written by Steven Rostedt, <m[blue][email protected]m>
Copyright (C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL).