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CONFIG_STACK_TRACER: Trace max stack

General informations

The Linux kernel configuration item CONFIG_STACK_TRACER:

Help text

This special tracer records the maximum stack footprint of the kernel and displays it in /sys/kernel/debug/tracing/stack_trace.

This tracer works by hooking into every function call that the kernel executes, and keeping a maximum stack depth value and stack-trace saved. If this is configured with DYNAMIC_FTRACE then it will not have any overhead while the stack tracer is disabled.

To enable the stack tracer on bootup, pass in 'stacktrace' on the kernel command line.

The stack tracer can also be enabled or disabled via the sysctl kernel.stack_tracer_enabled

Say N if unsure.

Hardware

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