X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=include%2Fust%2Ftracepoint.h;h=be35f92665e7d69eeaf6633f95c535c213262c9b;hb=066b83b8dfc562e00cb61d39eca0e0f77242828c;hp=7cfdbb01adbd4882a25165a9292170d63f0ba4df;hpb=93d0f2eaff675059588e958e3de74a1bb7dd4028;p=ust.git

diff --git a/include/ust/tracepoint.h b/include/ust/tracepoint.h
index 7cfdbb0..be35f92 100644
--- a/include/ust/tracepoint.h
+++ b/include/ust/tracepoint.h
@@ -1,5 +1,5 @@
-#ifndef _LINUX_TRACEPOINT_H
-#define _LINUX_TRACEPOINT_H
+#ifndef _UST_TRACEPOINT_H
+#define _UST_TRACEPOINT_H
 
 /*
  * Copyright (C) 2008 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
@@ -24,15 +24,10 @@
  * Ported to userspace by Pierre-Marc Fournier.
  */
 
-//#include <linux/immediate.h>
-//#include <linux/types.h>
-//#include <linux/rcupdate.h>
-
 #define _LGPL_SOURCE
 #include <urcu-bp.h>
-
 #include <ust/immediate.h>
-#include "kernelcompat.h"
+#include <ust/core.h>
 
 struct module;
 struct tracepoint;
@@ -48,8 +43,8 @@ struct tracepoint {
 					 * Keep in sync with vmlinux.lds.h.
 					 */
 
-#define TPPROTO(args...)	args
-#define TPARGS(args...)		args
+#define TP_PROTO(args...)	args
+#define TP_ARGS(args...)	args
 
 #define CONFIG_TRACEPOINTS
 #ifdef CONFIG_TRACEPOINTS
@@ -77,11 +72,11 @@ struct tracepoint {
 		if (!generic) {						\
 			if (unlikely(imv_read(__tracepoint_##name.state))) \
 				__DO_TRACE(&__tracepoint_##name,	\
-					TPPROTO(proto), TPARGS(args));	\
+					TP_PROTO(proto), TP_ARGS(args));	\
 		} else {						\
 			if (unlikely(_imv_read(__tracepoint_##name.state))) \
 				__DO_TRACE(&__tracepoint_##name,	\
-					TPPROTO(proto), TPARGS(args));	\
+					TP_PROTO(proto), TP_ARGS(args));	\
 		}							\
 	} while (0)
 
@@ -99,11 +94,11 @@ struct tracepoint {
 	extern struct tracepoint __tracepoint_##name;			\
 	static inline void trace_##name(proto)				\
 	{								\
-		__CHECK_TRACE(name, 0, TPPROTO(proto), TPARGS(args));	\
+		__CHECK_TRACE(name, 0, TP_PROTO(proto), TP_ARGS(args));	\
 	}								\
 	static inline void _trace_##name(proto)				\
 	{								\
-		__CHECK_TRACE(name, 1, TPPROTO(proto), TPARGS(args));	\
+		__CHECK_TRACE(name, 1, TP_PROTO(proto), TP_ARGS(args));	\
 	}								\
 	static inline int register_trace_##name(void (*probe)(proto))	\
 	{								\
@@ -121,11 +116,6 @@ struct tracepoint {
 	__attribute__((section("__tracepoints"), aligned(32))) =	\
 		{ __tpstrtab_##name, 0, NULL }
 
-#define EXPORT_TRACEPOINT_SYMBOL_GPL(name)				\
-	EXPORT_SYMBOL_GPL(__tracepoint_##name)
-#define EXPORT_TRACEPOINT_SYMBOL(name)					\
-	EXPORT_SYMBOL(__tracepoint_##name)
-
 extern void tracepoint_update_probe_range(struct tracepoint *begin,
 	struct tracepoint *end);
 
@@ -200,14 +190,20 @@ struct tracepoint_lib {
 
 extern int tracepoint_register_lib(struct tracepoint *tracepoints_start,
 				   int tracepoints_count);
+extern int tracepoint_unregister_lib(struct tracepoint *tracepoints_start);
 
 #define TRACEPOINT_LIB							\
-	extern struct tracepoint __start___tracepoints[] __attribute__((visibility("hidden")));	\
-	extern struct tracepoint __stop___tracepoints[] __attribute__((visibility("hidden"))); \
+	extern struct tracepoint __start___tracepoints[] __attribute__((weak, visibility("hidden"))); \
+	extern struct tracepoint __stop___tracepoints[] __attribute__((weak, visibility("hidden"))); \
 	static void __attribute__((constructor)) __tracepoints__init(void) \
 	{								\
 		tracepoint_register_lib(__start___tracepoints,		\
 					(((long)__stop___tracepoints)-((long)__start___tracepoints))/sizeof(struct tracepoint)); \
+	} \
+	\
+	static void __attribute__((destructor)) __tracepoints__destroy(void) \
+	{								\
+		tracepoint_unregister_lib(__start___tracepoints); \
 	}
 
-#endif
+#endif /* _UST_TRACEPOINT_H */