diff options
| author | Steven Noonan <steven@uplinklabs.net> | 2008-09-19 03:06:43 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-14 10:37:43 +0200 |
| commit | fb1b6d8b5154c692172a424e45fbd0573295cb93 (patch) | |
| tree | d9a7ad2c629a6133998402354e77cd721e4962b4 /kernel/trace/Kconfig | |
| parent | 5bf9a1ee350a10feb94107de32a203d81fbbe706 (diff) | |
ftrace: add nop tracer
A no-op tracer which can serve two purposes:
1. A template for development of a new tracer.
2. A convenient way to see ftrace_printk() calls without
an irrelevant trace making the output messy.
[ mingo@elte.hu: resolved conflicts ]
Signed-off-by: Steven Noonan <steven@uplinklabs.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/Kconfig')
| -rw-r--r-- | kernel/trace/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 16e5bb5daaa..d7b2de74463 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -101,6 +101,16 @@ config SCHED_TRACER This tracer tracks the latency of the highest priority task to be scheduled in, starting from the point it has woken up. +config NOP_TRACER + bool "NOP Tracer" + depends on HAVE_FTRACE + depends on DEBUG_KERNEL + select TRACING + help + This tracer does nothing. The primary purpose for it is to + politely print the output of ftrace_printk() calls without + the overhead of an irrelevant trace taking place. + config CONTEXT_SWITCH_TRACER bool "Trace process context switches" depends on HAVE_FTRACE |