1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Trace files that want to automate creation of all tracepoints defined
4 * in their file should include this file. The following are macros that the
5 * trace file may define:
6 *
7 * TRACE_SYSTEM defines the system the tracepoint is for
8 *
9 * TRACE_INCLUDE_FILE if the file name is something other than TRACE_SYSTEM.h
10 *     This macro may be defined to tell define_trace.h what file to include.
11 *     Note, leave off the ".h".
12 *
13 * TRACE_INCLUDE_PATH if the path is something other than core kernel include/trace
14 *     then this macro can define the path to use. Note, the path is relative to
15 *     define_trace.h, not the file including it. Full path names for out of tree
16 *     modules must be used.
17 */
18
19#ifdef CREATE_CUSTOM_TRACE_EVENTS
20
21/* Prevent recursion */
22#undef CREATE_CUSTOM_TRACE_EVENTS
23
24#include <linux/stringify.h>
25
26#undef TRACE_CUSTOM_EVENT
27#define TRACE_CUSTOM_EVENT(name, proto, args, tstruct, assign, print)
28
29#undef DEFINE_CUSTOM_EVENT
30#define DEFINE_CUSTOM_EVENT(template, name, proto, args)
31
32#undef TRACE_INCLUDE
33#undef __TRACE_INCLUDE
34
35#ifndef TRACE_INCLUDE_FILE
36# define TRACE_INCLUDE_FILE TRACE_SYSTEM
37# define UNDEF_TRACE_INCLUDE_FILE
38#endif
39
40#ifndef TRACE_INCLUDE_PATH
41# define __TRACE_INCLUDE(system) <trace/events/system.h>
42# define UNDEF_TRACE_INCLUDE_PATH
43#else
44# define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h)
45#endif
46
47# define TRACE_INCLUDE(system) __TRACE_INCLUDE(system)
48
49/* Let the trace headers be reread */
50#define TRACE_CUSTOM_MULTI_READ
51
52#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
53
54#ifdef TRACEPOINTS_ENABLED
55#include <trace/trace_custom_events.h>
56#endif
57
58#undef TRACE_CUSTOM_EVENT
59#undef DECLARE_CUSTOM_EVENT_CLASS
60#undef DEFINE_CUSTOM_EVENT
61#undef TRACE_CUSTOM_MULTI_READ
62
63/* Only undef what we defined in this file */
64#ifdef UNDEF_TRACE_INCLUDE_FILE
65# undef TRACE_INCLUDE_FILE
66# undef UNDEF_TRACE_INCLUDE_FILE
67#endif
68
69#ifdef UNDEF_TRACE_INCLUDE_PATH
70# undef TRACE_INCLUDE_PATH
71# undef UNDEF_TRACE_INCLUDE_PATH
72#endif
73
74/* We may be processing more files */
75#define CREATE_CUSTOM_TRACE_POINTS
76
77#endif /* CREATE_CUSTOM_TRACE_POINTS */
78