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authorIngo Molnar <mingo@elte.hu>2008-10-14 08:15:43 -0400
committerIngo Molnar <mingo@elte.hu>2008-10-14 08:15:43 -0400
commit4519d9e54dcd273975ad0adebad2a08c20428029 (patch)
treeb106b3a33908d2ca91c80efa54b60d9b1bd87df9 /kernel/trace/Kconfig
parent07d1890420cce95c577736e4d67f70cbd39845fe (diff)
tracing/stacktrace: improve help text
Improve the help text that is displayed for CONFIG_STACK_TRACER. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/Kconfig')
-rw-r--r--kernel/trace/Kconfig13
1 files changed, 11 insertions, 2 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 396aea11398e..11fd03a429f0 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -141,8 +141,17 @@ config STACK_TRACER
141 select FTRACE 141 select FTRACE
142 select STACKTRACE 142 select STACKTRACE
143 help 143 help
144 This tracer records the max stack of the kernel, and displays 144 This special tracer records the maximum stack footprint of the
145 it in debugfs/tracing/stack_trace 145 kernel and displays it in debugfs/tracing/stack_trace.
146
147 This tracer works by hooking into every function call that the
148 kernel executes, and keeping a maximum stack depth value and
149 stack-trace saved. Because this logic has to execute in every
150 kernel function, all the time, this option can slow down the
151 kernel measurably and is generally intended for kernel
152 developers only.
153
154 Say N if unsure.
146 155
147config DYNAMIC_FTRACE 156config DYNAMIC_FTRACE
148 bool "enable/disable ftrace tracepoints dynamically" 157 bool "enable/disable ftrace tracepoints dynamically"