1 files changed, 11 insertions, 2 deletions

diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 81709854f7ab..0341f2e2698a 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -180,7 +180,15 @@ static inline void tracepoint_synchronize_unregister(void)
 }
 
 #define PARAMS(args...) args
-#endif
+
+#endif /* _LINUX_TRACEPOINT_H */
+
+/*
+ * Note: we keep the TRACE_EVENT outside the include file ifdef protection.
+ *  This is due to the way trace events work. If a file includes two
+ *  trace event headers under one "CREATE_TRACE_POINTS" the first include
+ *  will override the TRACE_EVENT and break the second include.
+ */
 
 #ifndef TRACE_EVENT
 /*
@@ -287,4 +295,5 @@ static inline void tracepoint_synchronize_unregister(void)
 
 #define TRACE_EVENT(name, proto, args, struct, assign, print)   \
         DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
-#endif
+
+#endif /* ifdef TRACE_EVENT (see note above) */