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authorFrederic Weisbecker <fweisbec@gmail.com>2010-11-18 01:46:57 +0100
committerFrederic Weisbecker <fweisbec@gmail.com>2010-11-18 14:37:42 +0100
commit1ed0c5971159974185653170543a764cc061c857 (patch)
tree5887072ddc1c87776886c9a1b6ef61836f1ae925
parent61c32659b12c44e62de32fbf99f7e4ca783dc38b (diff)
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.h4
-rw-r--r--include/trace/ftrace.h12
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)
/*

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