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tracing, perf_counter: Add help text to CONFIG_EVENT_PROFILE 

Explain what tracepoint profiling sources are about.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Jeff Garzik <jeff@garzik.org>
LKML-Reference: <1248856508.6987.3041.camel@twins>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2009-07-29 10:50:09 +02:00 committed by Ingo Molnar
parent 2d1b6949d2
commit 470a1396c2
1 changed files with 9 additions and 1 deletions
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init/Kconfig
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@ -961,9 +961,17 @@ config PERF_COUNTERS
Say Y if unsure.
config EVENT_PROFILE
bool "Tracepoint profile sources"
bool "Tracepoint profiling sources"
depends on PERF_COUNTERS && EVENT_TRACING
default y
help
Allow the use of tracepoints as software performance counters.
When this is enabled, you can create perf counters based on
tracepoints using PERF_TYPE_TRACEPOINT and the tracepoint ID
found in debugfs://tracing/events/*/*/id. (The -e/--events
option to the perf tool can parse and interpret symbolic
tracepoints, in the subsystem:tracepoint_name format.)
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