X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=include%2Fust%2Ftracepoint.h;h=ade567726e9c4cffeffc5e0c39d61a8b66927a35;hb=5296e06cffd5ed5dcf3bb9fe7e3a18744ac18823;hp=3d61f72883c762cc44ad64fb5c4c005d281d2084;hpb=9edd34bd25f52dd39b354a84f02697254121aefd;p=ust.git

diff --git a/include/ust/tracepoint.h b/include/ust/tracepoint.h
index 3d61f72..ade5677 100644
--- a/include/ust/tracepoint.h
+++ b/include/ust/tracepoint.h
@@ -27,6 +27,7 @@
 
 #include <urcu-bp.h>
 #include <urcu/list.h>
+#include <urcu/compiler.h>
 
 struct tracepoint_probe {
 	void *func;
@@ -70,12 +71,13 @@ struct tracepoint {
 /*
  * it_func[0] is never NULL because there is at least one element in the array
  * when the array itself is non NULL.
+ * __attribute__((unused)) is for backward compatibility API.
  */
 #define __DO_TRACE(tp, proto, args)					\
 	do {								\
 		struct tracepoint_probe *__tp_it_probe_ptr;		\
 		void *__tp_it_func;					\
-		void *__tp_cb_data;					\
+		void *__tp_cb_data __attribute__((unused));		\
 									\
 		rcu_read_lock();					\
 		__tp_it_probe_ptr = rcu_dereference((tp)->probes);	\
@@ -95,7 +97,7 @@ struct tracepoint {
 
 #define __CHECK_TRACE(name, proto, args)				\
 	do {								\
-		if (unlikely(__tracepoint_##name.state))		\
+		if (caa_unlikely(__tracepoint_##name.state))		\
 			__DO_TRACE(&__tracepoint_##name,		\
 				TP_PROTO(proto), TP_ARGS(args));	\
 	} while (0)
@@ -124,6 +126,29 @@ struct tracepoint {
 	{								\
 		return __tracepoint_probe_unregister(#name, (void *)probe, \
 						   data);		\
+	}								\
+	/*								\
+	 * Backward-compatibility API (will be deprecated):		\
+	 * trace_*							\
+	 * register_trace_*						\
+	 * unregister_trace_*						\
+	 */								\
+	static inline void trace_##name(proto)				\
+	{								\
+		__CHECK_TRACE(name, TP_PROTO(proto),			\
+			      TP_ARGS(args));				\
+	}								\
+	static inline int						\
+	register_trace_##name(void (*probe)(proto))			\
+	{								\
+		return __tracepoint_probe_register(#name, (void *)probe,\
+						   NULL);		\
+	}								\
+	static inline int						\
+	unregister_trace_##name(void (*probe)(proto))			\
+	{								\
+		return __tracepoint_probe_unregister(#name, (void *)probe, \
+						     NULL);		\
 	}
 
 /*
@@ -194,6 +219,16 @@ int tracepoint_register_lib(struct tracepoint * const *tracepoints_start,
 extern
 int tracepoint_unregister_lib(struct tracepoint * const *tracepoints_start);
 
+/*
+ * Backward-compatibility API (will be deprecated):
+ * DEFINE_TRACE
+ * DECLARE_TRACE
+ * register_tracepoint
+ * unregister_tracepoint
+ */
+#define DEFINE_TRACE	_DEFINE_TRACEPOINT
+#define DECLARE_TRACE(name, proto, args)	\
+		_DECLARE_TRACEPOINT(name, TP_PARAMS(proto), TP_PARAMS(args))
 
 #ifndef TRACEPOINT_EVENT
 /*