1 /* SPDX-License-Identifier: GPL-2.0 */
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:
7 * TRACE_SYSTEM defines the system the tracepoint is for
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".
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.
19 #ifdef CREATE_TRACE_POINTS
21 /* Prevent recursion */
22 #undef CREATE_TRACE_POINTS
24 #include <linux/stringify.h>
27 #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
30 #undef TRACE_EVENT_CONDITION
31 #define TRACE_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \
40 #define TRACE_EVENT_FN(name, proto, args, tstruct, \
41 assign, print, reg, unreg) \
42 DEFINE_TRACE_FN(name, reg, unreg)
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)
50 #define DEFINE_EVENT(template, name, proto, args) \
53 #undef DEFINE_EVENT_FN
54 #define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \
55 DEFINE_TRACE_FN(name, reg, unreg)
57 #undef DEFINE_EVENT_PRINT
58 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
61 #undef DEFINE_EVENT_CONDITION
62 #define DEFINE_EVENT_CONDITION(template, name, proto, args, cond) \
63 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
66 #define DECLARE_TRACE(name, proto, args) \
70 #undef __TRACE_INCLUDE
72 #ifndef TRACE_INCLUDE_FILE
73 # define TRACE_INCLUDE_FILE TRACE_SYSTEM
74 # define UNDEF_TRACE_INCLUDE_FILE
77 #ifndef TRACE_INCLUDE_PATH
78 # define __TRACE_INCLUDE(system) <trace/events/system.h>
79 # define UNDEF_TRACE_INCLUDE_PATH
81 # define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h)
84 # define TRACE_INCLUDE(system) __TRACE_INCLUDE(system)
86 /* Let the trace headers be reread */
87 #define TRACE_HEADER_MULTI_READ
89 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
91 /* Make all open coded DECLARE_TRACE nops */
93 #define DECLARE_TRACE(name, proto, args)
95 #ifdef TRACEPOINTS_ENABLED
96 #include <trace/trace_events.h>
97 #include <trace/perf.h>
101 #undef TRACE_EVENT_FN
102 #undef TRACE_EVENT_FN_COND
103 #undef TRACE_EVENT_CONDITION
104 #undef DECLARE_EVENT_CLASS
106 #undef DEFINE_EVENT_FN
107 #undef DEFINE_EVENT_PRINT
108 #undef DEFINE_EVENT_CONDITION
109 #undef TRACE_HEADER_MULTI_READ
112 /* Only undef what we defined in this file */
113 #ifdef UNDEF_TRACE_INCLUDE_FILE
114 # undef TRACE_INCLUDE_FILE
115 # undef UNDEF_TRACE_INCLUDE_FILE
118 #ifdef UNDEF_TRACE_INCLUDE_PATH
119 # undef TRACE_INCLUDE_PATH
120 # undef UNDEF_TRACE_INCLUDE_PATH
123 /* We may be processing more files */
124 #define CREATE_TRACE_POINTS
126 #endif /* CREATE_TRACE_POINTS */