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tracing/stacktrace: improve help text

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Improve the help text that is displayed for CONFIG_STACK_TRACER.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-10-14 14:15:43 +02:00
parent 07d1890420
commit 4519d9e54d
1 changed files with 11 additions and 2 deletions
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13
kernel/trace/Kconfig
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@ -141,8 +141,17 @@ config STACK_TRACER
select FTRACE
select STACKTRACE
help
This tracer records the max stack of the kernel, and displays
it in debugfs/tracing/stack_trace
This special tracer records the maximum stack footprint of the
kernel and displays it in debugfs/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. Because this logic has to execute in every
kernel function, all the time, this option can slow down the
kernel measurably and is generally intended for kernel
developers only.
Say N if unsure.
config DYNAMIC_FTRACE
bool "enable/disable ftrace tracepoints dynamically"