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467e12f780d863956b1b1b650c406d9d4cb5c0c2
[deliverable/linux.git] / include / trace / trace_events.h
1 /*
2 * Stage 1 of the trace events.
3 *
4 * Override the macros in <trace/trace_events.h> to include the following:
5 *
6 * struct trace_event_raw_<call> {
7 * struct trace_entry ent;
8 * <type> <item>;
9 * <type2> <item2>[<len>];
10 * [...]
11 * };
12 *
13 * The <type> <item> is created by the __field(type, item) macro or
14 * the __array(type2, item2, len) macro.
15 * We simply do "type item;", and that will create the fields
16 * in the structure.
17 */
18
19 #include <linux/trace_events.h>
20
21 #ifndef TRACE_SYSTEM_VAR
22 #define TRACE_SYSTEM_VAR TRACE_SYSTEM
23 #endif
24
25 #define __app__(x, y) str__##x##y
26 #define __app(x, y) __app__(x, y)
27
28 #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name)
29
30 #define TRACE_MAKE_SYSTEM_STR() \
31 static const char TRACE_SYSTEM_STRING[] = \
32 __stringify(TRACE_SYSTEM)
33
34 TRACE_MAKE_SYSTEM_STR();
35
36 #undef TRACE_DEFINE_ENUM
37 #define TRACE_DEFINE_ENUM(a) \
38 static struct trace_enum_map __used __initdata \
39 __##TRACE_SYSTEM##_##a = \
40 { \
41 .system = TRACE_SYSTEM_STRING, \
42 .enum_string = #a, \
43 .enum_value = a \
44 }; \
45 static struct trace_enum_map __used \
46 __attribute__((section("_ftrace_enum_map"))) \
47 *TRACE_SYSTEM##_##a = &__##TRACE_SYSTEM##_##a
48
49 /*
50 * DECLARE_EVENT_CLASS can be used to add a generic function
51 * handlers for events. That is, if all events have the same
52 * parameters and just have distinct trace points.
53 * Each tracepoint can be defined with DEFINE_EVENT and that
54 * will map the DECLARE_EVENT_CLASS to the tracepoint.
55 *
56 * TRACE_EVENT is a one to one mapping between tracepoint and template.
57 */
58 #undef TRACE_EVENT
59 #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
60 DECLARE_EVENT_CLASS(name, \
61 PARAMS(proto), \
62 PARAMS(args), \
63 PARAMS(tstruct), \
64 PARAMS(assign), \
65 PARAMS(print)); \
66 DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args));
67
68
69 #undef __field
70 #define __field(type, item) type item;
71
72 #undef __field_ext
73 #define __field_ext(type, item, filter_type) type item;
74
75 #undef __field_struct
76 #define __field_struct(type, item) type item;
77
78 #undef __field_struct_ext
79 #define __field_struct_ext(type, item, filter_type) type item;
80
81 #undef __array
82 #define __array(type, item, len) type item[len];
83
84 #undef __dynamic_array
85 #define __dynamic_array(type, item, len) u32 __data_loc_##item;
86
87 #undef __string
88 #define __string(item, src) __dynamic_array(char, item, -1)
89
90 #undef __bitmask
91 #define __bitmask(item, nr_bits) __dynamic_array(char, item, -1)
92
93 #undef TP_STRUCT__entry
94 #define TP_STRUCT__entry(args...) args
95
96 #undef DECLARE_EVENT_CLASS
97 #define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \
98 struct trace_event_raw_##name { \
99 struct trace_entry ent; \
100 tstruct \
101 char __data[0]; \
102 }; \
103 \
104 static struct trace_event_class event_class_##name;
105
106 #undef DEFINE_EVENT
107 #define DEFINE_EVENT(template, name, proto, args) \
108 static struct trace_event_call __used \
109 __attribute__((__aligned__(4))) event_##name
110
111 #undef DEFINE_EVENT_FN
112 #define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \
113 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
114
115 #undef DEFINE_EVENT_PRINT
116 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
117 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
118
119 /* Callbacks are meaningless to ftrace. */
120 #undef TRACE_EVENT_FN
121 #define TRACE_EVENT_FN(name, proto, args, tstruct, \
122 assign, print, reg, unreg) \
123 TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \
124 PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \
125
126 #undef TRACE_EVENT_FN_COND
127 #define TRACE_EVENT_FN_COND(name, proto, args, cond, tstruct, \
128 assign, print, reg, unreg) \
129 TRACE_EVENT_CONDITION(name, PARAMS(proto), PARAMS(args), PARAMS(cond), \
130 PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \
131
132 #undef TRACE_EVENT_FLAGS
133 #define TRACE_EVENT_FLAGS(name, value) \
134 __TRACE_EVENT_FLAGS(name, value)
135
136 #undef TRACE_EVENT_PERF_PERM
137 #define TRACE_EVENT_PERF_PERM(name, expr...) \
138 __TRACE_EVENT_PERF_PERM(name, expr)
139
140 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
141
142 /*
143 * Stage 2 of the trace events.
144 *
145 * Include the following:
146 *
147 * struct trace_event_data_offsets_<call> {
148 * u32 <item1>;
149 * u32 <item2>;
150 * [...]
151 * };
152 *
153 * The __dynamic_array() macro will create each u32 <item>, this is
154 * to keep the offset of each array from the beginning of the event.
155 * The size of an array is also encoded, in the higher 16 bits of <item>.
156 */
157
158 #undef TRACE_DEFINE_ENUM
159 #define TRACE_DEFINE_ENUM(a)
160
161 #undef __field
162 #define __field(type, item)
163
164 #undef __field_ext
165 #define __field_ext(type, item, filter_type)
166
167 #undef __field_struct
168 #define __field_struct(type, item)
169
170 #undef __field_struct_ext
171 #define __field_struct_ext(type, item, filter_type)
172
173 #undef __array
174 #define __array(type, item, len)
175
176 #undef __dynamic_array
177 #define __dynamic_array(type, item, len) u32 item;
178
179 #undef __string
180 #define __string(item, src) __dynamic_array(char, item, -1)
181
182 #undef __bitmask
183 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
184
185 #undef DECLARE_EVENT_CLASS
186 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
187 struct trace_event_data_offsets_##call { \
188 tstruct; \
189 };
190
191 #undef DEFINE_EVENT
192 #define DEFINE_EVENT(template, name, proto, args)
193
194 #undef DEFINE_EVENT_PRINT
195 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
196 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
197
198 #undef TRACE_EVENT_FLAGS
199 #define TRACE_EVENT_FLAGS(event, flag)
200
201 #undef TRACE_EVENT_PERF_PERM
202 #define TRACE_EVENT_PERF_PERM(event, expr...)
203
204 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
205
206 /*
207 * Stage 3 of the trace events.
208 *
209 * Override the macros in <trace/trace_events.h> to include the following:
210 *
211 * enum print_line_t
212 * trace_raw_output_<call>(struct trace_iterator *iter, int flags)
213 * {
214 * struct trace_seq *s = &iter->seq;
215 * struct trace_event_raw_<call> *field; <-- defined in stage 1
216 * struct trace_entry *entry;
217 * struct trace_seq *p = &iter->tmp_seq;
218 * int ret;
219 *
220 * entry = iter->ent;
221 *
222 * if (entry->type != event_<call>->event.type) {
223 * WARN_ON_ONCE(1);
224 * return TRACE_TYPE_UNHANDLED;
225 * }
226 *
227 * field = (typeof(field))entry;
228 *
229 * trace_seq_init(p);
230 * ret = trace_seq_printf(s, "%s: ", <call>);
231 * if (ret)
232 * ret = trace_seq_printf(s, <TP_printk> "\n");
233 * if (!ret)
234 * return TRACE_TYPE_PARTIAL_LINE;
235 *
236 * return TRACE_TYPE_HANDLED;
237 * }
238 *
239 * This is the method used to print the raw event to the trace
240 * output format. Note, this is not needed if the data is read
241 * in binary.
242 */
243
244 #undef __entry
245 #define __entry field
246
247 #undef TP_printk
248 #define TP_printk(fmt, args...) fmt "\n", args
249
250 #undef __get_dynamic_array
251 #define __get_dynamic_array(field) \
252 ((void *)__entry + (__entry->__data_loc_##field & 0xffff))
253
254 #undef __get_dynamic_array_len
255 #define __get_dynamic_array_len(field) \
256 ((__entry->__data_loc_##field >> 16) & 0xffff)
257
258 #undef __get_str
259 #define __get_str(field) ((char *)__get_dynamic_array(field))
260
261 #undef __get_bitmask
262 #define __get_bitmask(field) \
263 ({ \
264 void *__bitmask = __get_dynamic_array(field); \
265 unsigned int __bitmask_size; \
266 __bitmask_size = __get_dynamic_array_len(field); \
267 trace_print_bitmask_seq(p, __bitmask, __bitmask_size); \
268 })
269
270 #undef __print_flags
271 #define __print_flags(flag, delim, flag_array...) \
272 ({ \
273 static const struct trace_print_flags __flags[] = \
274 { flag_array, { -1, NULL }}; \
275 trace_print_flags_seq(p, delim, flag, __flags); \
276 })
277
278 #undef __print_symbolic
279 #define __print_symbolic(value, symbol_array...) \
280 ({ \
281 static const struct trace_print_flags symbols[] = \
282 { symbol_array, { -1, NULL }}; \
283 trace_print_symbols_seq(p, value, symbols); \
284 })
285
286 #undef __print_symbolic_u64
287 #if BITS_PER_LONG == 32
288 #define __print_symbolic_u64(value, symbol_array...) \
289 ({ \
290 static const struct trace_print_flags_u64 symbols[] = \
291 { symbol_array, { -1, NULL } }; \
292 trace_print_symbols_seq_u64(p, value, symbols); \
293 })
294 #else
295 #define __print_symbolic_u64(value, symbol_array...) \
296 __print_symbolic(value, symbol_array)
297 #endif
298
299 #undef __print_hex
300 #define __print_hex(buf, buf_len) trace_print_hex_seq(p, buf, buf_len)
301
302 #undef __print_array
303 #define __print_array(array, count, el_size) \
304 ({ \
305 BUILD_BUG_ON(el_size != 1 && el_size != 2 && \
306 el_size != 4 && el_size != 8); \
307 trace_print_array_seq(p, array, count, el_size); \
308 })
309
310 #undef DECLARE_EVENT_CLASS
311 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
312 static notrace enum print_line_t \
313 trace_raw_output_##call(struct trace_iterator *iter, int flags, \
314 struct trace_event *trace_event) \
315 { \
316 struct trace_seq *s = &iter->seq; \
317 struct trace_seq __maybe_unused *p = &iter->tmp_seq; \
318 struct trace_event_raw_##call *field; \
319 int ret; \
320 \
321 field = (typeof(field))iter->ent; \
322 \
323 ret = trace_raw_output_prep(iter, trace_event); \
324 if (ret != TRACE_TYPE_HANDLED) \
325 return ret; \
326 \
327 trace_seq_printf(s, print); \
328 \
329 return trace_handle_return(s); \
330 } \
331 static struct trace_event_functions trace_event_type_funcs_##call = { \
332 .trace = trace_raw_output_##call, \
333 };
334
335 #undef DEFINE_EVENT_PRINT
336 #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
337 static notrace enum print_line_t \
338 trace_raw_output_##call(struct trace_iterator *iter, int flags, \
339 struct trace_event *event) \
340 { \
341 struct trace_event_raw_##template *field; \
342 struct trace_entry *entry; \
343 struct trace_seq *p = &iter->tmp_seq; \
344 \
345 entry = iter->ent; \
346 \
347 if (entry->type != event_##call.event.type) { \
348 WARN_ON_ONCE(1); \
349 return TRACE_TYPE_UNHANDLED; \
350 } \
351 \
352 field = (typeof(field))entry; \
353 \
354 trace_seq_init(p); \
355 return trace_output_call(iter, #call, print); \
356 } \
357 static struct trace_event_functions trace_event_type_funcs_##call = { \
358 .trace = trace_raw_output_##call, \
359 };
360
361 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
362
363 #undef __field_ext
364 #define __field_ext(type, item, filter_type) \
365 ret = trace_define_field(event_call, #type, #item, \
366 offsetof(typeof(field), item), \
367 sizeof(field.item), \
368 is_signed_type(type), filter_type); \
369 if (ret) \
370 return ret;
371
372 #undef __field_struct_ext
373 #define __field_struct_ext(type, item, filter_type) \
374 ret = trace_define_field(event_call, #type, #item, \
375 offsetof(typeof(field), item), \
376 sizeof(field.item), \
377 0, filter_type); \
378 if (ret) \
379 return ret;
380
381 #undef __field
382 #define __field(type, item) __field_ext(type, item, FILTER_OTHER)
383
384 #undef __field_struct
385 #define __field_struct(type, item) __field_struct_ext(type, item, FILTER_OTHER)
386
387 #undef __array
388 #define __array(type, item, len) \
389 do { \
390 char *type_str = #type"["__stringify(len)"]"; \
391 BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
392 ret = trace_define_field(event_call, type_str, #item, \
393 offsetof(typeof(field), item), \
394 sizeof(field.item), \
395 is_signed_type(type), FILTER_OTHER); \
396 if (ret) \
397 return ret; \
398 } while (0);
399
400 #undef __dynamic_array
401 #define __dynamic_array(type, item, len) \
402 ret = trace_define_field(event_call, "__data_loc " #type "[]", #item, \
403 offsetof(typeof(field), __data_loc_##item), \
404 sizeof(field.__data_loc_##item), \
405 is_signed_type(type), FILTER_OTHER);
406
407 #undef __string
408 #define __string(item, src) __dynamic_array(char, item, -1)
409
410 #undef __bitmask
411 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
412
413 #undef DECLARE_EVENT_CLASS
414 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \
415 static int notrace __init \
416 trace_event_define_fields_##call(struct trace_event_call *event_call) \
417 { \
418 struct trace_event_raw_##call field; \
419 int ret; \
420 \
421 tstruct; \
422 \
423 return ret; \
424 }
425
426 #undef DEFINE_EVENT
427 #define DEFINE_EVENT(template, name, proto, args)
428
429 #undef DEFINE_EVENT_PRINT
430 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
431 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
432
433 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
434
435 /*
436 * remember the offset of each array from the beginning of the event.
437 */
438
439 #undef __entry
440 #define __entry entry
441
442 #undef __field
443 #define __field(type, item)
444
445 #undef __field_ext
446 #define __field_ext(type, item, filter_type)
447
448 #undef __field_struct
449 #define __field_struct(type, item)
450
451 #undef __field_struct_ext
452 #define __field_struct_ext(type, item, filter_type)
453
454 #undef __array
455 #define __array(type, item, len)
456
457 #undef __dynamic_array
458 #define __dynamic_array(type, item, len) \
459 __item_length = (len) * sizeof(type); \
460 __data_offsets->item = __data_size + \
461 offsetof(typeof(*entry), __data); \
462 __data_offsets->item |= __item_length << 16; \
463 __data_size += __item_length;
464
465 #undef __string
466 #define __string(item, src) __dynamic_array(char, item, \
467 strlen((src) ? (const char *)(src) : "(null)") + 1)
468
469 /*
470 * __bitmask_size_in_bytes_raw is the number of bytes needed to hold
471 * num_possible_cpus().
472 */
473 #define __bitmask_size_in_bytes_raw(nr_bits) \
474 (((nr_bits) + 7) / 8)
475
476 #define __bitmask_size_in_longs(nr_bits) \
477 ((__bitmask_size_in_bytes_raw(nr_bits) + \
478 ((BITS_PER_LONG / 8) - 1)) / (BITS_PER_LONG / 8))
479
480 /*
481 * __bitmask_size_in_bytes is the number of bytes needed to hold
482 * num_possible_cpus() padded out to the nearest long. This is what
483 * is saved in the buffer, just to be consistent.
484 */
485 #define __bitmask_size_in_bytes(nr_bits) \
486 (__bitmask_size_in_longs(nr_bits) * (BITS_PER_LONG / 8))
487
488 #undef __bitmask
489 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, \
490 __bitmask_size_in_longs(nr_bits))
491
492 #undef DECLARE_EVENT_CLASS
493 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
494 static inline notrace int trace_event_get_offsets_##call( \
495 struct trace_event_data_offsets_##call *__data_offsets, proto) \
496 { \
497 int __data_size = 0; \
498 int __maybe_unused __item_length; \
499 struct trace_event_raw_##call __maybe_unused *entry; \
500 \
501 tstruct; \
502 \
503 return __data_size; \
504 }
505
506 #undef DEFINE_EVENT
507 #define DEFINE_EVENT(template, name, proto, args)
508
509 #undef DEFINE_EVENT_PRINT
510 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
511 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
512
513 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
514
515 /*
516 * Stage 4 of the trace events.
517 *
518 * Override the macros in <trace/trace_events.h> to include the following:
519 *
520 * For those macros defined with TRACE_EVENT:
521 *
522 * static struct trace_event_call event_<call>;
523 *
524 * static void trace_event_raw_event_<call>(void *__data, proto)
525 * {
526 * struct trace_event_file *trace_file = __data;
527 * struct trace_event_call *event_call = trace_file->event_call;
528 * struct trace_event_data_offsets_<call> __maybe_unused __data_offsets;
529 * unsigned long eflags = trace_file->flags;
530 * enum event_trigger_type __tt = ETT_NONE;
531 * struct ring_buffer_event *event;
532 * struct trace_event_raw_<call> *entry; <-- defined in stage 1
533 * struct ring_buffer *buffer;
534 * unsigned long irq_flags;
535 * int __data_size;
536 * int pc;
537 *
538 * if (!(eflags & EVENT_FILE_FL_TRIGGER_COND)) {
539 * if (eflags & EVENT_FILE_FL_TRIGGER_MODE)
540 * event_triggers_call(trace_file, NULL);
541 * if (eflags & EVENT_FILE_FL_SOFT_DISABLED)
542 * return;
543 * }
544 *
545 * local_save_flags(irq_flags);
546 * pc = preempt_count();
547 *
548 * __data_size = trace_event_get_offsets_<call>(&__data_offsets, args);
549 *
550 * event = trace_event_buffer_lock_reserve(&buffer, trace_file,
551 * event_<call>->event.type,
552 * sizeof(*entry) + __data_size,
553 * irq_flags, pc);
554 * if (!event)
555 * return;
556 * entry = ring_buffer_event_data(event);
557 *
558 * { <assign>; } <-- Here we assign the entries by the __field and
559 * __array macros.
560 *
561 * if (eflags & EVENT_FILE_FL_TRIGGER_COND)
562 * __tt = event_triggers_call(trace_file, entry);
563 *
564 * if (test_bit(EVENT_FILE_FL_SOFT_DISABLED_BIT,
565 * &trace_file->flags))
566 * ring_buffer_discard_commit(buffer, event);
567 * else if (!filter_check_discard(trace_file, entry, buffer, event))
568 * trace_buffer_unlock_commit(buffer, event, irq_flags, pc);
569 *
570 * if (__tt)
571 * event_triggers_post_call(trace_file, __tt);
572 * }
573 *
574 * static struct trace_event ftrace_event_type_<call> = {
575 * .trace = trace_raw_output_<call>, <-- stage 2
576 * };
577 *
578 * static char print_fmt_<call>[] = <TP_printk>;
579 *
580 * static struct trace_event_class __used event_class_<template> = {
581 * .system = "<system>",
582 * .define_fields = trace_event_define_fields_<call>,
583 * .fields = LIST_HEAD_INIT(event_class_##call.fields),
584 * .raw_init = trace_event_raw_init,
585 * .probe = trace_event_raw_event_##call,
586 * .reg = trace_event_reg,
587 * };
588 *
589 * static struct trace_event_call event_<call> = {
590 * .class = event_class_<template>,
591 * {
592 * .tp = &__tracepoint_<call>,
593 * },
594 * .event = &ftrace_event_type_<call>,
595 * .print_fmt = print_fmt_<call>,
596 * .flags = TRACE_EVENT_FL_TRACEPOINT,
597 * };
598 * // its only safe to use pointers when doing linker tricks to
599 * // create an array.
600 * static struct trace_event_call __used
601 * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>;
602 *
603 */
604
605 #ifdef CONFIG_PERF_EVENTS
606
607 #define _TRACE_PERF_PROTO(call, proto) \
608 static notrace void \
609 perf_trace_##call(void *__data, proto);
610
611 #define _TRACE_PERF_INIT(call) \
612 .perf_probe = perf_trace_##call,
613
614 #else
615 #define _TRACE_PERF_PROTO(call, proto)
616 #define _TRACE_PERF_INIT(call)
617 #endif /* CONFIG_PERF_EVENTS */
618
619 #undef __entry
620 #define __entry entry
621
622 #undef __field
623 #define __field(type, item)
624
625 #undef __field_struct
626 #define __field_struct(type, item)
627
628 #undef __array
629 #define __array(type, item, len)
630
631 #undef __dynamic_array
632 #define __dynamic_array(type, item, len) \
633 __entry->__data_loc_##item = __data_offsets.item;
634
635 #undef __string
636 #define __string(item, src) __dynamic_array(char, item, -1)
637
638 #undef __assign_str
639 #define __assign_str(dst, src) \
640 strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)");
641
642 #undef __bitmask
643 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
644
645 #undef __get_bitmask
646 #define __get_bitmask(field) (char *)__get_dynamic_array(field)
647
648 #undef __assign_bitmask
649 #define __assign_bitmask(dst, src, nr_bits) \
650 memcpy(__get_bitmask(dst), (src), __bitmask_size_in_bytes(nr_bits))
651
652 #undef TP_fast_assign
653 #define TP_fast_assign(args...) args
654
655 #undef __perf_count
656 #define __perf_count(c) (c)
657
658 #undef __perf_task
659 #define __perf_task(t) (t)
660
661 #undef DECLARE_EVENT_CLASS
662 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
663 \
664 static notrace void \
665 trace_event_raw_event_##call(void *__data, proto) \
666 { \
667 struct trace_event_file *trace_file = __data; \
668 struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\
669 struct trace_event_buffer fbuffer; \
670 struct trace_event_raw_##call *entry; \
671 int __data_size; \
672 \
673 if (trace_trigger_soft_disabled(trace_file)) \
674 return; \
675 \
676 __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \
677 \
678 entry = trace_event_buffer_reserve(&fbuffer, trace_file, \
679 sizeof(*entry) + __data_size); \
680 \
681 if (!entry) \
682 return; \
683 \
684 tstruct \
685 \
686 { assign; } \
687 \
688 trace_event_buffer_commit(&fbuffer); \
689 }
690 /*
691 * The ftrace_test_probe is compiled out, it is only here as a build time check
692 * to make sure that if the tracepoint handling changes, the ftrace probe will
693 * fail to compile unless it too is updated.
694 */
695
696 #undef DEFINE_EVENT
697 #define DEFINE_EVENT(template, call, proto, args) \
698 static inline void ftrace_test_probe_##call(void) \
699 { \
700 check_trace_callback_type_##call(trace_event_raw_event_##template); \
701 }
702
703 #undef DEFINE_EVENT_PRINT
704 #define DEFINE_EVENT_PRINT(template, name, proto, args, print)
705
706 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
707
708 #undef __entry
709 #define __entry REC
710
711 #undef __print_flags
712 #undef __print_symbolic
713 #undef __print_hex
714 #undef __get_dynamic_array
715 #undef __get_dynamic_array_len
716 #undef __get_str
717 #undef __get_bitmask
718 #undef __print_array
719
720 #undef TP_printk
721 #define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args)
722
723 #undef DECLARE_EVENT_CLASS
724 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
725 _TRACE_PERF_PROTO(call, PARAMS(proto)); \
726 static char print_fmt_##call[] = print; \
727 static struct trace_event_class __used __refdata event_class_##call = { \
728 .system = TRACE_SYSTEM_STRING, \
729 .define_fields = trace_event_define_fields_##call, \
730 .fields = LIST_HEAD_INIT(event_class_##call.fields),\
731 .raw_init = trace_event_raw_init, \
732 .probe = trace_event_raw_event_##call, \
733 .reg = trace_event_reg, \
734 _TRACE_PERF_INIT(call) \
735 };
736
737 #undef DEFINE_EVENT
738 #define DEFINE_EVENT(template, call, proto, args) \
739 \
740 static struct trace_event_call __used event_##call = { \
741 .class = &event_class_##template, \
742 { \
743 .tp = &__tracepoint_##call, \
744 }, \
745 .event.funcs = &trace_event_type_funcs_##template, \
746 .print_fmt = print_fmt_##template, \
747 .flags = TRACE_EVENT_FL_TRACEPOINT, \
748 }; \
749 static struct trace_event_call __used \
750 __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
751
752 #undef DEFINE_EVENT_PRINT
753 #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
754 \
755 static char print_fmt_##call[] = print; \
756 \
757 static struct trace_event_call __used event_##call = { \
758 .class = &event_class_##template, \
759 { \
760 .tp = &__tracepoint_##call, \
761 }, \
762 .event.funcs = &trace_event_type_funcs_##call, \
763 .print_fmt = print_fmt_##call, \
764 .flags = TRACE_EVENT_FL_TRACEPOINT, \
765 }; \
766 static struct trace_event_call __used \
767 __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
768
769 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
Linux kernel - Deliverables
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