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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2010-11-18 01:46:57 +0100 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2010-11-18 14:37:42 +0100 |
| commit | 1ed0c5971159974185653170543a764cc061c857 (patch) | |
| tree | 5887072ddc1c87776886c9a1b6ef61836f1ae925 | |
| parent | tracing: New flag to allow non privileged users to use a trace event (diff) | |
| download | linux-1ed0c5971159974185653170543a764cc061c857.tar.xz linux-1ed0c5971159974185653170543a764cc061c857.zip | |
tracing: New macro to set up initial event flags value
This introduces the new TRACE_EVENT_FLAGS() macro in order
to set up initial event flags value.
This macro must simply follow the definition of a trace event
and take the event name and the flag value as parameters:
TRACE_EVENT(my_event, .....
....
);
TRACE_EVENT_FLAGS(my_event, 1)
This will set up 1 as the initial my_event->flags value.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Jason Baron <jbaron@redhat.com>
| -rw-r--r-- | include/linux/tracepoint.h | 4 | ||||
| -rw-r--r-- | include/trace/ftrace.h | 12 |
2 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index a4a90b6726ce..5a6074fcd81d 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -234,6 +234,8 @@ do_trace: \ PARAMS(void *__data, proto), \ PARAMS(__data, args)) +#define TRACE_EVENT_FLAGS(event, flag) + #endif /* DECLARE_TRACE */ #ifndef TRACE_EVENT @@ -354,4 +356,6 @@ do_trace: \ assign, print, reg, unreg) \ DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) +#define TRACE_EVENT_FLAGS(event, flag) + #endif /* ifdef TRACE_EVENT (see note above) */ diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h index a9377c0083ad..6f540123d43e 100644 --- a/include/trace/ftrace.h +++ b/include/trace/ftrace.h @@ -82,6 +82,15 @@ TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \ PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ +#undef TRACE_EVENT_FLAGS +#define TRACE_EVENT_FLAGS(name, value) \ + static int __init trace_init_flags_##name(void) \ + { \ + event_##name.flags = value; \ + return 0; \ + } \ + early_initcall(trace_init_flags_##name); + #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) @@ -129,6 +138,9 @@ #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) +#undef TRACE_EVENT_FLAGS +#define TRACE_EVENT_FLAGS(event, flag) + #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) /* |