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97e1c18e MD |
1 | #ifndef _LINUX_TRACEPOINT_H |
2 | #define _LINUX_TRACEPOINT_H | |
3 | ||
4 | /* | |
5 | * Kernel Tracepoint API. | |
6 | * | |
8cd09a59 | 7 | * See Documentation/trace/tracepoints.txt. |
97e1c18e | 8 | * |
de7b2973 | 9 | * Copyright (C) 2008-2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
97e1c18e MD |
10 | * |
11 | * Heavily inspired from the Linux Kernel Markers. | |
12 | * | |
13 | * This file is released under the GPLv2. | |
14 | * See the file COPYING for more details. | |
15 | */ | |
16 | ||
b70e4f05 | 17 | #include <linux/errno.h> |
97e1c18e MD |
18 | #include <linux/types.h> |
19 | #include <linux/rcupdate.h> | |
c5905afb | 20 | #include <linux/static_key.h> |
97e1c18e MD |
21 | |
22 | struct module; | |
23 | struct tracepoint; | |
de7b2973 | 24 | struct notifier_block; |
97e1c18e | 25 | |
38516ab5 SR |
26 | struct tracepoint_func { |
27 | void *func; | |
28 | void *data; | |
29 | }; | |
30 | ||
97e1c18e MD |
31 | struct tracepoint { |
32 | const char *name; /* Tracepoint name */ | |
c5905afb | 33 | struct static_key key; |
97419875 JS |
34 | void (*regfunc)(void); |
35 | void (*unregfunc)(void); | |
bd1c8b22 | 36 | struct tracepoint_func __rcu *funcs; |
65498646 | 37 | }; |
97e1c18e | 38 | |
0c564a53 SRRH |
39 | struct trace_enum_map { |
40 | const char *system; | |
41 | const char *enum_string; | |
42 | unsigned long enum_value; | |
43 | }; | |
44 | ||
38516ab5 | 45 | extern int |
de7b2973 MD |
46 | tracepoint_probe_register(struct tracepoint *tp, void *probe, void *data); |
47 | extern int | |
48 | tracepoint_probe_unregister(struct tracepoint *tp, void *probe, void *data); | |
49 | extern void | |
50 | for_each_kernel_tracepoint(void (*fct)(struct tracepoint *tp, void *priv), | |
51 | void *priv); | |
2e26ca71 | 52 | |
b75ef8b4 MD |
53 | #ifdef CONFIG_MODULES |
54 | struct tp_module { | |
55 | struct list_head list; | |
eb7d035c | 56 | struct module *mod; |
b75ef8b4 | 57 | }; |
de7b2973 | 58 | |
45ab2813 | 59 | bool trace_module_has_bad_taint(struct module *mod); |
de7b2973 MD |
60 | extern int register_tracepoint_module_notifier(struct notifier_block *nb); |
61 | extern int unregister_tracepoint_module_notifier(struct notifier_block *nb); | |
45ab2813 SRRH |
62 | #else |
63 | static inline bool trace_module_has_bad_taint(struct module *mod) | |
64 | { | |
65 | return false; | |
66 | } | |
de7b2973 MD |
67 | static inline |
68 | int register_tracepoint_module_notifier(struct notifier_block *nb) | |
69 | { | |
70 | return 0; | |
71 | } | |
72 | static inline | |
73 | int unregister_tracepoint_module_notifier(struct notifier_block *nb) | |
74 | { | |
75 | return 0; | |
76 | } | |
b75ef8b4 MD |
77 | #endif /* CONFIG_MODULES */ |
78 | ||
2e26ca71 SR |
79 | /* |
80 | * tracepoint_synchronize_unregister must be called between the last tracepoint | |
81 | * probe unregistration and the end of module exit to make sure there is no | |
82 | * caller executing a probe when it is freed. | |
83 | */ | |
84 | static inline void tracepoint_synchronize_unregister(void) | |
85 | { | |
86 | synchronize_sched(); | |
87 | } | |
88 | ||
b725dfea MD |
89 | #ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS |
90 | extern void syscall_regfunc(void); | |
91 | extern void syscall_unregfunc(void); | |
92 | #endif /* CONFIG_HAVE_SYSCALL_TRACEPOINTS */ | |
93 | ||
2e26ca71 SR |
94 | #define PARAMS(args...) args |
95 | ||
0c564a53 SRRH |
96 | #define TRACE_DEFINE_ENUM(x) |
97 | ||
2e26ca71 SR |
98 | #endif /* _LINUX_TRACEPOINT_H */ |
99 | ||
100 | /* | |
101 | * Note: we keep the TRACE_EVENT and DECLARE_TRACE outside the include | |
102 | * file ifdef protection. | |
103 | * This is due to the way trace events work. If a file includes two | |
104 | * trace event headers under one "CREATE_TRACE_POINTS" the first include | |
105 | * will override the TRACE_EVENT and break the second include. | |
106 | */ | |
107 | ||
ea20d929 SR |
108 | #ifndef DECLARE_TRACE |
109 | ||
2939b046 | 110 | #define TP_PROTO(args...) args |
8cd09a59 | 111 | #define TP_ARGS(args...) args |
287050d3 | 112 | #define TP_CONDITION(args...) args |
97e1c18e MD |
113 | |
114 | #ifdef CONFIG_TRACEPOINTS | |
115 | ||
116 | /* | |
117 | * it_func[0] is never NULL because there is at least one element in the array | |
118 | * when the array itself is non NULL. | |
38516ab5 SR |
119 | * |
120 | * Note, the proto and args passed in includes "__data" as the first parameter. | |
121 | * The reason for this is to handle the "void" prototype. If a tracepoint | |
122 | * has a "void" prototype, then it is invalid to declare a function | |
123 | * as "(void *, void)". The DECLARE_TRACE_NOARGS() will pass in just | |
124 | * "void *data", where as the DECLARE_TRACE() will pass in "void *data, proto". | |
97e1c18e | 125 | */ |
2fbb90db | 126 | #define __DO_TRACE(tp, proto, args, cond, prercu, postrcu) \ |
97e1c18e | 127 | do { \ |
38516ab5 SR |
128 | struct tracepoint_func *it_func_ptr; \ |
129 | void *it_func; \ | |
130 | void *__data; \ | |
97e1c18e | 131 | \ |
287050d3 SR |
132 | if (!(cond)) \ |
133 | return; \ | |
2fbb90db | 134 | prercu; \ |
da7b3eab | 135 | rcu_read_lock_sched_notrace(); \ |
38516ab5 SR |
136 | it_func_ptr = rcu_dereference_sched((tp)->funcs); \ |
137 | if (it_func_ptr) { \ | |
97e1c18e | 138 | do { \ |
38516ab5 SR |
139 | it_func = (it_func_ptr)->func; \ |
140 | __data = (it_func_ptr)->data; \ | |
141 | ((void(*)(proto))(it_func))(args); \ | |
142 | } while ((++it_func_ptr)->func); \ | |
97e1c18e | 143 | } \ |
da7b3eab | 144 | rcu_read_unlock_sched_notrace(); \ |
2fbb90db | 145 | postrcu; \ |
97e1c18e MD |
146 | } while (0) |
147 | ||
7ece55a4 JT |
148 | #ifndef MODULE |
149 | #define __DECLARE_TRACE_RCU(name, proto, args, cond, data_proto, data_args) \ | |
150 | static inline void trace_##name##_rcuidle(proto) \ | |
151 | { \ | |
152 | if (static_key_false(&__tracepoint_##name.key)) \ | |
153 | __DO_TRACE(&__tracepoint_##name, \ | |
154 | TP_PROTO(data_proto), \ | |
155 | TP_ARGS(data_args), \ | |
156 | TP_CONDITION(cond), \ | |
d6284099 PM |
157 | rcu_irq_enter(), \ |
158 | rcu_irq_exit()); \ | |
7ece55a4 JT |
159 | } |
160 | #else | |
161 | #define __DECLARE_TRACE_RCU(name, proto, args, cond, data_proto, data_args) | |
162 | #endif | |
163 | ||
97e1c18e MD |
164 | /* |
165 | * Make sure the alignment of the structure in the __tracepoints section will | |
166 | * not add unwanted padding between the beginning of the section and the | |
167 | * structure. Force alignment to the same alignment as the section start. | |
3a630178 DH |
168 | * |
169 | * When lockdep is enabled, we make sure to always do the RCU portions of | |
170 | * the tracepoint code, regardless of whether tracing is on or we match the | |
171 | * condition. This lets us find RCU issues triggered with tracepoints even | |
172 | * when this tracepoint is off. This code has no purpose other than poking | |
173 | * RCU a bit. | |
97e1c18e | 174 | */ |
2fbb90db | 175 | #define __DECLARE_TRACE(name, proto, args, cond, data_proto, data_args) \ |
7e066fb8 | 176 | extern struct tracepoint __tracepoint_##name; \ |
97e1c18e MD |
177 | static inline void trace_##name(proto) \ |
178 | { \ | |
c5905afb | 179 | if (static_key_false(&__tracepoint_##name.key)) \ |
97e1c18e | 180 | __DO_TRACE(&__tracepoint_##name, \ |
38516ab5 | 181 | TP_PROTO(data_proto), \ |
287050d3 | 182 | TP_ARGS(data_args), \ |
2fbb90db | 183 | TP_CONDITION(cond),,); \ |
a05d59a5 | 184 | if (IS_ENABLED(CONFIG_LOCKDEP) && (cond)) { \ |
3a630178 DH |
185 | rcu_read_lock_sched_notrace(); \ |
186 | rcu_dereference_sched(__tracepoint_##name.funcs);\ | |
187 | rcu_read_unlock_sched_notrace(); \ | |
188 | } \ | |
2fbb90db | 189 | } \ |
7ece55a4 JT |
190 | __DECLARE_TRACE_RCU(name, PARAMS(proto), PARAMS(args), \ |
191 | PARAMS(cond), PARAMS(data_proto), PARAMS(data_args)) \ | |
38516ab5 SR |
192 | static inline int \ |
193 | register_trace_##name(void (*probe)(data_proto), void *data) \ | |
97e1c18e | 194 | { \ |
de7b2973 MD |
195 | return tracepoint_probe_register(&__tracepoint_##name, \ |
196 | (void *)probe, data); \ | |
97e1c18e | 197 | } \ |
38516ab5 SR |
198 | static inline int \ |
199 | unregister_trace_##name(void (*probe)(data_proto), void *data) \ | |
97e1c18e | 200 | { \ |
de7b2973 MD |
201 | return tracepoint_probe_unregister(&__tracepoint_##name,\ |
202 | (void *)probe, data); \ | |
53da59aa | 203 | } \ |
38516ab5 SR |
204 | static inline void \ |
205 | check_trace_callback_type_##name(void (*cb)(data_proto)) \ | |
53da59aa | 206 | { \ |
7c65bbc7 SRRH |
207 | } \ |
208 | static inline bool \ | |
209 | trace_##name##_enabled(void) \ | |
210 | { \ | |
211 | return static_key_false(&__tracepoint_##name.key); \ | |
97e1c18e MD |
212 | } |
213 | ||
65498646 MD |
214 | /* |
215 | * We have no guarantee that gcc and the linker won't up-align the tracepoint | |
216 | * structures, so we create an array of pointers that will be used for iteration | |
217 | * on the tracepoints. | |
218 | */ | |
d430d3d7 JB |
219 | #define DEFINE_TRACE_FN(name, reg, unreg) \ |
220 | static const char __tpstrtab_##name[] \ | |
221 | __attribute__((section("__tracepoints_strings"))) = #name; \ | |
222 | struct tracepoint __tracepoint_##name \ | |
223 | __attribute__((section("__tracepoints"))) = \ | |
c5905afb | 224 | { __tpstrtab_##name, STATIC_KEY_INIT_FALSE, reg, unreg, NULL };\ |
d430d3d7 JB |
225 | static struct tracepoint * const __tracepoint_ptr_##name __used \ |
226 | __attribute__((section("__tracepoints_ptrs"))) = \ | |
65498646 | 227 | &__tracepoint_##name; |
97419875 JS |
228 | |
229 | #define DEFINE_TRACE(name) \ | |
230 | DEFINE_TRACE_FN(name, NULL, NULL); | |
7e066fb8 MD |
231 | |
232 | #define EXPORT_TRACEPOINT_SYMBOL_GPL(name) \ | |
233 | EXPORT_SYMBOL_GPL(__tracepoint_##name) | |
234 | #define EXPORT_TRACEPOINT_SYMBOL(name) \ | |
235 | EXPORT_SYMBOL(__tracepoint_##name) | |
236 | ||
97e1c18e | 237 | #else /* !CONFIG_TRACEPOINTS */ |
2fbb90db | 238 | #define __DECLARE_TRACE(name, proto, args, cond, data_proto, data_args) \ |
97e1c18e MD |
239 | static inline void trace_##name(proto) \ |
240 | { } \ | |
2fbb90db SR |
241 | static inline void trace_##name##_rcuidle(proto) \ |
242 | { } \ | |
38516ab5 SR |
243 | static inline int \ |
244 | register_trace_##name(void (*probe)(data_proto), \ | |
245 | void *data) \ | |
97e1c18e MD |
246 | { \ |
247 | return -ENOSYS; \ | |
248 | } \ | |
38516ab5 SR |
249 | static inline int \ |
250 | unregister_trace_##name(void (*probe)(data_proto), \ | |
251 | void *data) \ | |
c420970e MD |
252 | { \ |
253 | return -ENOSYS; \ | |
53da59aa | 254 | } \ |
38516ab5 | 255 | static inline void check_trace_callback_type_##name(void (*cb)(data_proto)) \ |
53da59aa | 256 | { \ |
7c65bbc7 SRRH |
257 | } \ |
258 | static inline bool \ | |
259 | trace_##name##_enabled(void) \ | |
260 | { \ | |
261 | return false; \ | |
c420970e | 262 | } |
97e1c18e | 263 | |
97419875 | 264 | #define DEFINE_TRACE_FN(name, reg, unreg) |
7e066fb8 MD |
265 | #define DEFINE_TRACE(name) |
266 | #define EXPORT_TRACEPOINT_SYMBOL_GPL(name) | |
267 | #define EXPORT_TRACEPOINT_SYMBOL(name) | |
268 | ||
97e1c18e | 269 | #endif /* CONFIG_TRACEPOINTS */ |
38516ab5 | 270 | |
3c49b52b SR |
271 | #ifdef CONFIG_TRACING |
272 | /** | |
273 | * tracepoint_string - register constant persistent string to trace system | |
274 | * @str - a constant persistent string that will be referenced in tracepoints | |
275 | * | |
276 | * If constant strings are being used in tracepoints, it is faster and | |
277 | * more efficient to just save the pointer to the string and reference | |
278 | * that with a printf "%s" instead of saving the string in the ring buffer | |
279 | * and wasting space and time. | |
280 | * | |
281 | * The problem with the above approach is that userspace tools that read | |
282 | * the binary output of the trace buffers do not have access to the string. | |
283 | * Instead they just show the address of the string which is not very | |
284 | * useful to users. | |
285 | * | |
286 | * With tracepoint_string(), the string will be registered to the tracing | |
287 | * system and exported to userspace via the debugfs/tracing/printk_formats | |
288 | * file that maps the string address to the string text. This way userspace | |
289 | * tools that read the binary buffers have a way to map the pointers to | |
290 | * the ASCII strings they represent. | |
291 | * | |
292 | * The @str used must be a constant string and persistent as it would not | |
293 | * make sense to show a string that no longer exists. But it is still fine | |
294 | * to be used with modules, because when modules are unloaded, if they | |
295 | * had tracepoints, the ring buffers are cleared too. As long as the string | |
296 | * does not change during the life of the module, it is fine to use | |
297 | * tracepoint_string() within a module. | |
298 | */ | |
299 | #define tracepoint_string(str) \ | |
300 | ({ \ | |
301 | static const char *___tp_str __tracepoint_string = str; \ | |
302 | ___tp_str; \ | |
303 | }) | |
304 | #define __tracepoint_string __attribute__((section("__tracepoint_str"))) | |
305 | #else | |
306 | /* | |
307 | * tracepoint_string() is used to save the string address for userspace | |
308 | * tracing tools. When tracing isn't configured, there's no need to save | |
309 | * anything. | |
310 | */ | |
311 | # define tracepoint_string(str) str | |
312 | # define __tracepoint_string | |
313 | #endif | |
314 | ||
38516ab5 SR |
315 | /* |
316 | * The need for the DECLARE_TRACE_NOARGS() is to handle the prototype | |
317 | * (void). "void" is a special value in a function prototype and can | |
318 | * not be combined with other arguments. Since the DECLARE_TRACE() | |
319 | * macro adds a data element at the beginning of the prototype, | |
320 | * we need a way to differentiate "(void *data, proto)" from | |
321 | * "(void *data, void)". The second prototype is invalid. | |
322 | * | |
323 | * DECLARE_TRACE_NOARGS() passes "void" as the tracepoint prototype | |
324 | * and "void *__data" as the callback prototype. | |
325 | * | |
326 | * DECLARE_TRACE() passes "proto" as the tracepoint protoype and | |
327 | * "void *__data, proto" as the callback prototype. | |
328 | */ | |
329 | #define DECLARE_TRACE_NOARGS(name) \ | |
287050d3 | 330 | __DECLARE_TRACE(name, void, , 1, void *__data, __data) |
38516ab5 SR |
331 | |
332 | #define DECLARE_TRACE(name, proto, args) \ | |
287050d3 | 333 | __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), 1, \ |
38516ab5 SR |
334 | PARAMS(void *__data, proto), \ |
335 | PARAMS(__data, args)) | |
336 | ||
287050d3 SR |
337 | #define DECLARE_TRACE_CONDITION(name, proto, args, cond) \ |
338 | __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), PARAMS(cond), \ | |
339 | PARAMS(void *__data, proto), \ | |
340 | PARAMS(__data, args)) | |
341 | ||
1ed0c597 FW |
342 | #define TRACE_EVENT_FLAGS(event, flag) |
343 | ||
d5b5f391 PZ |
344 | #define TRACE_EVENT_PERF_PERM(event, expr...) |
345 | ||
ea20d929 | 346 | #endif /* DECLARE_TRACE */ |
97e1c18e | 347 | |
ea20d929 | 348 | #ifndef TRACE_EVENT |
823f9124 SR |
349 | /* |
350 | * For use with the TRACE_EVENT macro: | |
351 | * | |
352 | * We define a tracepoint, its arguments, its printk format | |
2621bca8 | 353 | * and its 'fast binary record' layout. |
823f9124 SR |
354 | * |
355 | * Firstly, name your tracepoint via TRACE_EVENT(name : the | |
356 | * 'subsystem_event' notation is fine. | |
357 | * | |
358 | * Think about this whole construct as the | |
359 | * 'trace_sched_switch() function' from now on. | |
360 | * | |
361 | * | |
362 | * TRACE_EVENT(sched_switch, | |
363 | * | |
364 | * * | |
365 | * * A function has a regular function arguments | |
366 | * * prototype, declare it via TP_PROTO(): | |
367 | * * | |
368 | * | |
ef18012b SR |
369 | * TP_PROTO(struct rq *rq, struct task_struct *prev, |
370 | * struct task_struct *next), | |
823f9124 SR |
371 | * |
372 | * * | |
373 | * * Define the call signature of the 'function'. | |
374 | * * (Design sidenote: we use this instead of a | |
375 | * * TP_PROTO1/TP_PROTO2/TP_PROTO3 ugliness.) | |
376 | * * | |
377 | * | |
ef18012b | 378 | * TP_ARGS(rq, prev, next), |
823f9124 SR |
379 | * |
380 | * * | |
381 | * * Fast binary tracing: define the trace record via | |
382 | * * TP_STRUCT__entry(). You can think about it like a | |
383 | * * regular C structure local variable definition. | |
384 | * * | |
385 | * * This is how the trace record is structured and will | |
386 | * * be saved into the ring buffer. These are the fields | |
387 | * * that will be exposed to user-space in | |
156f5a78 | 388 | * * /sys/kernel/debug/tracing/events/<*>/format. |
823f9124 SR |
389 | * * |
390 | * * The declared 'local variable' is called '__entry' | |
391 | * * | |
392 | * * __field(pid_t, prev_prid) is equivalent to a standard declariton: | |
393 | * * | |
394 | * * pid_t prev_pid; | |
395 | * * | |
396 | * * __array(char, prev_comm, TASK_COMM_LEN) is equivalent to: | |
397 | * * | |
398 | * * char prev_comm[TASK_COMM_LEN]; | |
399 | * * | |
400 | * | |
401 | * TP_STRUCT__entry( | |
402 | * __array( char, prev_comm, TASK_COMM_LEN ) | |
403 | * __field( pid_t, prev_pid ) | |
404 | * __field( int, prev_prio ) | |
405 | * __array( char, next_comm, TASK_COMM_LEN ) | |
406 | * __field( pid_t, next_pid ) | |
407 | * __field( int, next_prio ) | |
408 | * ), | |
409 | * | |
410 | * * | |
411 | * * Assign the entry into the trace record, by embedding | |
412 | * * a full C statement block into TP_fast_assign(). You | |
413 | * * can refer to the trace record as '__entry' - | |
414 | * * otherwise you can put arbitrary C code in here. | |
415 | * * | |
416 | * * Note: this C code will execute every time a trace event | |
417 | * * happens, on an active tracepoint. | |
418 | * * | |
419 | * | |
ef18012b SR |
420 | * TP_fast_assign( |
421 | * memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN); | |
422 | * __entry->prev_pid = prev->pid; | |
423 | * __entry->prev_prio = prev->prio; | |
823f9124 SR |
424 | * memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN); |
425 | * __entry->next_pid = next->pid; | |
ef18012b | 426 | * __entry->next_prio = next->prio; |
ec6e7c3a | 427 | * ), |
823f9124 SR |
428 | * |
429 | * * | |
430 | * * Formatted output of a trace record via TP_printk(). | |
431 | * * This is how the tracepoint will appear under ftrace | |
432 | * * plugins that make use of this tracepoint. | |
433 | * * | |
434 | * * (raw-binary tracing wont actually perform this step.) | |
435 | * * | |
436 | * | |
437 | * TP_printk("task %s:%d [%d] ==> %s:%d [%d]", | |
438 | * __entry->prev_comm, __entry->prev_pid, __entry->prev_prio, | |
439 | * __entry->next_comm, __entry->next_pid, __entry->next_prio), | |
440 | * | |
441 | * ); | |
442 | * | |
443 | * This macro construct is thus used for the regular printk format | |
444 | * tracing setup, it is used to construct a function pointer based | |
445 | * tracepoint callback (this is used by programmatic plugins and | |
446 | * can also by used by generic instrumentation like SystemTap), and | |
447 | * it is also used to expose a structured trace record in | |
156f5a78 | 448 | * /sys/kernel/debug/tracing/events/. |
97419875 JS |
449 | * |
450 | * A set of (un)registration functions can be passed to the variant | |
451 | * TRACE_EVENT_FN to perform any (un)registration work. | |
823f9124 SR |
452 | */ |
453 | ||
091ad365 | 454 | #define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) |
ff038f5c SR |
455 | #define DEFINE_EVENT(template, name, proto, args) \ |
456 | DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) | |
f5abaa1b SR |
457 | #define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg)\ |
458 | DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) | |
e5bc9721 SR |
459 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
460 | DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) | |
287050d3 SR |
461 | #define DEFINE_EVENT_CONDITION(template, name, proto, \ |
462 | args, cond) \ | |
463 | DECLARE_TRACE_CONDITION(name, PARAMS(proto), \ | |
464 | PARAMS(args), PARAMS(cond)) | |
ff038f5c | 465 | |
30a8fecc | 466 | #define TRACE_EVENT(name, proto, args, struct, assign, print) \ |
da4d0302 | 467 | DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) |
97419875 JS |
468 | #define TRACE_EVENT_FN(name, proto, args, struct, \ |
469 | assign, print, reg, unreg) \ | |
470 | DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) | |
287050d3 SR |
471 | #define TRACE_EVENT_CONDITION(name, proto, args, cond, \ |
472 | struct, assign, print) \ | |
473 | DECLARE_TRACE_CONDITION(name, PARAMS(proto), \ | |
474 | PARAMS(args), PARAMS(cond)) | |
7cb2e3ee | 475 | |
1ed0c597 FW |
476 | #define TRACE_EVENT_FLAGS(event, flag) |
477 | ||
d5b5f391 PZ |
478 | #define TRACE_EVENT_PERF_PERM(event, expr...) |
479 | ||
7cb2e3ee | 480 | #endif /* ifdef TRACE_EVENT (see note above) */ |