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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_TRACE_POINTS
20
21/* Prevent recursion */
22#undef CREATE_TRACE_POINTS
23
24#include <linux/stringify.h>
25
26#undef TRACE_EVENT
27#define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
28 DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
29
30#undef TRACE_EVENT_CONDITION
31#define TRACE_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \
32 TRACE_EVENT(name, \
33 PARAMS(proto), \
34 PARAMS(args), \
35 PARAMS(tstruct), \
36 PARAMS(assign), \
37 PARAMS(print))
38
39#undef TRACE_EVENT_FN
40#define TRACE_EVENT_FN(name, proto, args, tstruct, \
41 assign, print, reg, unreg) \
42 DEFINE_TRACE_FN(name, reg, unreg, PARAMS(proto), PARAMS(args))
43
44#undef TRACE_EVENT_FN_COND
45#define TRACE_EVENT_FN_COND(name, proto, args, cond, tstruct, \
46 assign, print, reg, unreg) \
47 DEFINE_TRACE_FN(name, reg, unreg, PARAMS(proto), PARAMS(args))
48
49#undef TRACE_EVENT_SYSCALL
50#define TRACE_EVENT_SYSCALL(name, proto, args, struct, assign, print, reg, unreg) \
51 DEFINE_TRACE_SYSCALL(name, reg, unreg, PARAMS(proto), PARAMS(args))
52
53#undef TRACE_EVENT_NOP
54#define TRACE_EVENT_NOP(name, proto, args, struct, assign, print)
55
56#undef DEFINE_EVENT_NOP
57#define DEFINE_EVENT_NOP(template, name, proto, args)
58
59#undef DEFINE_EVENT
60#define DEFINE_EVENT(template, name, proto, args) \
61 DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
62
63#undef DEFINE_EVENT_FN
64#define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \
65 DEFINE_TRACE_FN(name, reg, unreg, PARAMS(proto), PARAMS(args))
66
67#undef DEFINE_EVENT_PRINT
68#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
69 DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
70
71#undef DEFINE_EVENT_CONDITION
72#define DEFINE_EVENT_CONDITION(template, name, proto, args, cond) \
73 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
74
75#undef DECLARE_TRACE
76#define DECLARE_TRACE(name, proto, args) \
77 DEFINE_TRACE(name##_tp, PARAMS(proto), PARAMS(args))
78
79#undef DECLARE_TRACE_CONDITION
80#define DECLARE_TRACE_CONDITION(name, proto, args, cond) \
81 DEFINE_TRACE(name##_tp, PARAMS(proto), PARAMS(args))
82
83#undef DECLARE_TRACE_EVENT
84#define DECLARE_TRACE_EVENT(name, proto, args) \
85 DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
86
87#undef DECLARE_TRACE_EVENT_CONDITION
88#define DECLARE_TRACE_EVENT_CONDITION(name, proto, args, cond) \
89 DEFINE_TRACE(name, PARAMS(proto), PARAMS(args))
90
91/* If requested, create helpers for calling these tracepoints from Rust. */
92#ifdef CREATE_RUST_TRACE_POINTS
93#undef DEFINE_RUST_DO_TRACE
94#define DEFINE_RUST_DO_TRACE(name, proto, args) \
95 __DEFINE_RUST_DO_TRACE(name, PARAMS(proto), PARAMS(args))
96#endif
97
98#undef TRACE_INCLUDE
99#undef __TRACE_INCLUDE
100
101#ifndef TRACE_INCLUDE_FILE
102# define TRACE_INCLUDE_FILE TRACE_SYSTEM
103# define UNDEF_TRACE_INCLUDE_FILE
104#endif
105
106#ifndef TRACE_INCLUDE_PATH
107# define __TRACE_INCLUDE(system) <trace/events/system.h>
108# define UNDEF_TRACE_INCLUDE_PATH
109#else
110# define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h)
111#endif
112
113# define TRACE_INCLUDE(system) __TRACE_INCLUDE(system)
114
115/* Let the trace headers be reread */
116#define TRACE_HEADER_MULTI_READ
117
118#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
119
120/* Make all open coded DECLARE_TRACE nops */
121#undef DECLARE_TRACE
122#define DECLARE_TRACE(name, proto, args)
123#undef DECLARE_TRACE_CONDITION
124#define DECLARE_TRACE_CONDITION(name, proto, args, cond)
125
126#undef DECLARE_TRACE_EVENT
127#define DECLARE_TRACE_EVENT(name, proto, args)
128#undef DECLARE_TRACE_EVENT_CONDITION
129#define DECLARE_TRACE_EVENT_CONDITION(name, proto, args, cond)
130
131#ifdef TRACEPOINTS_ENABLED
132#include <trace/trace_events.h>
133#include <trace/perf.h>
134#include <trace/bpf_probe.h>
135#endif
136
137#undef TRACE_EVENT
138#undef TRACE_EVENT_FN
139#undef TRACE_EVENT_FN_COND
140#undef TRACE_EVENT_SYSCALL
141#undef TRACE_EVENT_CONDITION
142#undef TRACE_EVENT_NOP
143#undef DEFINE_EVENT_NOP
144#undef DECLARE_EVENT_CLASS
145#undef DEFINE_EVENT
146#undef DEFINE_EVENT_FN
147#undef DEFINE_EVENT_PRINT
148#undef DEFINE_EVENT_CONDITION
149#undef TRACE_HEADER_MULTI_READ
150#undef DECLARE_TRACE
151#undef DECLARE_TRACE_CONDITION
152#undef DECLARE_TRACE_EVENT
153#undef DECLARE_TRACE_EVENT_CONDITION
154
155/* Only undef what we defined in this file */
156#ifdef UNDEF_TRACE_INCLUDE_FILE
157# undef TRACE_INCLUDE_FILE
158# undef UNDEF_TRACE_INCLUDE_FILE
159#endif
160
161#ifdef UNDEF_TRACE_INCLUDE_PATH
162# undef TRACE_INCLUDE_PATH
163# undef UNDEF_TRACE_INCLUDE_PATH
164#endif
165
166#ifdef CREATE_RUST_TRACE_POINTS
167# undef DEFINE_RUST_DO_TRACE
168# define DEFINE_RUST_DO_TRACE(name, proto, args)
169#endif
170
171/* We may be processing more files */
172#define CREATE_TRACE_POINTS
173
174#endif /* CREATE_TRACE_POINTS */