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-rw-r--r--include/linux/tracepoint.h19
1 files changed, 16 insertions, 3 deletions
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 9c3186578ce0..1fb11daa5c53 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _LINUX_TRACEPOINT_H
#define _LINUX_TRACEPOINT_H
@@ -9,9 +10,6 @@
* Copyright (C) 2008-2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* Heavily inspired from the Linux Kernel Markers.
- *
- * This file is released under the GPLv2.
- * See the file COPYING for more details.
*/
#include <linux/smp.h>
@@ -548,4 +546,19 @@ static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p)
#define TRACE_EVENT_PERF_PERM(event, expr...)
+#define DECLARE_EVENT_NOP(name, proto, args) \
+ static inline void trace_##name(proto) \
+ { } \
+ static inline bool trace_##name##_enabled(void) \
+ { \
+ return false; \
+ }
+
+#define TRACE_EVENT_NOP(name, proto, args, struct, assign, print) \
+ DECLARE_EVENT_NOP(name, PARAMS(proto), PARAMS(args))
+
+#define DECLARE_EVENT_CLASS_NOP(name, proto, args, tstruct, assign, print)
+#define DEFINE_EVENT_NOP(template, name, proto, args) \
+ DECLARE_EVENT_NOP(name, PARAMS(proto), PARAMS(args))
+
#endif /* ifdef TRACE_EVENT (see note above) */
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