Messages in this thread Patch in this message | | | From | Frederic Weisbecker <> | Subject | [PATCH 2/5] tracing: New macro to set up initial event flags value | Date | Thu, 18 Nov 2010 02:32:40 +0100 |
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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> --- include/linux/tracepoint.h | 4 ++++ 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 a4a90b6..5a6074f 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 a9377c0..6f54012 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) /* -- 1.6.2.3
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