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Merge tag 'for-linus-5.10-1' of git://github.com/cminyard/linux-ipmi
[mirror_ubuntu-hirsute-kernel.git] / include / trace / trace_events.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Stage 1 of the trace events.
4 *
5 * Override the macros in the event tracepoint header <trace/events/XXX.h>
6 * to include the following:
7 *
8 * struct trace_event_raw_<call> {
9 * struct trace_entry ent;
10 * <type> <item>;
11 * <type2> <item2>[<len>];
12 * [...]
13 * };
14 *
15 * The <type> <item> is created by the __field(type, item) macro or
16 * the __array(type2, item2, len) macro.
17 * We simply do "type item;", and that will create the fields
18 * in the structure.
19 */
20
21 #include <linux/trace_events.h>
22
23 #ifndef TRACE_SYSTEM_VAR
24 #define TRACE_SYSTEM_VAR TRACE_SYSTEM
25 #endif
26
27 #define __app__(x, y) str__##x##y
28 #define __app(x, y) __app__(x, y)
29
30 #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name)
31
32 #define TRACE_MAKE_SYSTEM_STR() \
33 static const char TRACE_SYSTEM_STRING[] = \
34 __stringify(TRACE_SYSTEM)
35
36 TRACE_MAKE_SYSTEM_STR();
37
38 #undef TRACE_DEFINE_ENUM
39 #define TRACE_DEFINE_ENUM(a) \
40 static struct trace_eval_map __used __initdata \
41 __##TRACE_SYSTEM##_##a = \
42 { \
43 .system = TRACE_SYSTEM_STRING, \
44 .eval_string = #a, \
45 .eval_value = a \
46 }; \
47 static struct trace_eval_map __used \
48 __attribute__((section("_ftrace_eval_map"))) \
49 *TRACE_SYSTEM##_##a = &__##TRACE_SYSTEM##_##a
50
51 #undef TRACE_DEFINE_SIZEOF
52 #define TRACE_DEFINE_SIZEOF(a) \
53 static struct trace_eval_map __used __initdata \
54 __##TRACE_SYSTEM##_##a = \
55 { \
56 .system = TRACE_SYSTEM_STRING, \
57 .eval_string = "sizeof(" #a ")", \
58 .eval_value = sizeof(a) \
59 }; \
60 static struct trace_eval_map __used \
61 __attribute__((section("_ftrace_eval_map"))) \
62 *TRACE_SYSTEM##_##a = &__##TRACE_SYSTEM##_##a
63
64 /*
65 * DECLARE_EVENT_CLASS can be used to add a generic function
66 * handlers for events. That is, if all events have the same
67 * parameters and just have distinct trace points.
68 * Each tracepoint can be defined with DEFINE_EVENT and that
69 * will map the DECLARE_EVENT_CLASS to the tracepoint.
70 *
71 * TRACE_EVENT is a one to one mapping between tracepoint and template.
72 */
73 #undef TRACE_EVENT
74 #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
75 DECLARE_EVENT_CLASS(name, \
76 PARAMS(proto), \
77 PARAMS(args), \
78 PARAMS(tstruct), \
79 PARAMS(assign), \
80 PARAMS(print)); \
81 DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args));
82
83
84 #undef __field
85 #define __field(type, item) type item;
86
87 #undef __field_ext
88 #define __field_ext(type, item, filter_type) type item;
89
90 #undef __field_struct
91 #define __field_struct(type, item) type item;
92
93 #undef __field_struct_ext
94 #define __field_struct_ext(type, item, filter_type) type item;
95
96 #undef __array
97 #define __array(type, item, len) type item[len];
98
99 #undef __dynamic_array
100 #define __dynamic_array(type, item, len) u32 __data_loc_##item;
101
102 #undef __string
103 #define __string(item, src) __dynamic_array(char, item, -1)
104
105 #undef __bitmask
106 #define __bitmask(item, nr_bits) __dynamic_array(char, item, -1)
107
108 #undef TP_STRUCT__entry
109 #define TP_STRUCT__entry(args...) args
110
111 #undef DECLARE_EVENT_CLASS
112 #define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \
113 struct trace_event_raw_##name { \
114 struct trace_entry ent; \
115 tstruct \
116 char __data[0]; \
117 }; \
118 \
119 static struct trace_event_class event_class_##name;
120
121 #undef DEFINE_EVENT
122 #define DEFINE_EVENT(template, name, proto, args) \
123 static struct trace_event_call __used \
124 __attribute__((__aligned__(4))) event_##name
125
126 #undef DEFINE_EVENT_FN
127 #define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \
128 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
129
130 #undef DEFINE_EVENT_PRINT
131 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
132 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
133
134 /* Callbacks are meaningless to ftrace. */
135 #undef TRACE_EVENT_FN
136 #define TRACE_EVENT_FN(name, proto, args, tstruct, \
137 assign, print, reg, unreg) \
138 TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \
139 PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \
140
141 #undef TRACE_EVENT_FN_COND
142 #define TRACE_EVENT_FN_COND(name, proto, args, cond, tstruct, \
143 assign, print, reg, unreg) \
144 TRACE_EVENT_CONDITION(name, PARAMS(proto), PARAMS(args), PARAMS(cond), \
145 PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \
146
147 #undef TRACE_EVENT_FLAGS
148 #define TRACE_EVENT_FLAGS(name, value) \
149 __TRACE_EVENT_FLAGS(name, value)
150
151 #undef TRACE_EVENT_PERF_PERM
152 #define TRACE_EVENT_PERF_PERM(name, expr...) \
153 __TRACE_EVENT_PERF_PERM(name, expr)
154
155 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
156
157 /*
158 * Stage 2 of the trace events.
159 *
160 * Include the following:
161 *
162 * struct trace_event_data_offsets_<call> {
163 * u32 <item1>;
164 * u32 <item2>;
165 * [...]
166 * };
167 *
168 * The __dynamic_array() macro will create each u32 <item>, this is
169 * to keep the offset of each array from the beginning of the event.
170 * The size of an array is also encoded, in the higher 16 bits of <item>.
171 */
172
173 #undef TRACE_DEFINE_ENUM
174 #define TRACE_DEFINE_ENUM(a)
175
176 #undef TRACE_DEFINE_SIZEOF
177 #define TRACE_DEFINE_SIZEOF(a)
178
179 #undef __field
180 #define __field(type, item)
181
182 #undef __field_ext
183 #define __field_ext(type, item, filter_type)
184
185 #undef __field_struct
186 #define __field_struct(type, item)
187
188 #undef __field_struct_ext
189 #define __field_struct_ext(type, item, filter_type)
190
191 #undef __array
192 #define __array(type, item, len)
193
194 #undef __dynamic_array
195 #define __dynamic_array(type, item, len) u32 item;
196
197 #undef __string
198 #define __string(item, src) __dynamic_array(char, item, -1)
199
200 #undef __bitmask
201 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
202
203 #undef DECLARE_EVENT_CLASS
204 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
205 struct trace_event_data_offsets_##call { \
206 tstruct; \
207 };
208
209 #undef DEFINE_EVENT
210 #define DEFINE_EVENT(template, name, proto, args)
211
212 #undef DEFINE_EVENT_PRINT
213 #define DEFINE_EVENT_PRINT(template, name, proto, args, print)
214
215 #undef TRACE_EVENT_FLAGS
216 #define TRACE_EVENT_FLAGS(event, flag)
217
218 #undef TRACE_EVENT_PERF_PERM
219 #define TRACE_EVENT_PERF_PERM(event, expr...)
220
221 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
222
223 /*
224 * Stage 3 of the trace events.
225 *
226 * Override the macros in the event tracepoint header <trace/events/XXX.h>
227 * to include the following:
228 *
229 * enum print_line_t
230 * trace_raw_output_<call>(struct trace_iterator *iter, int flags)
231 * {
232 * struct trace_seq *s = &iter->seq;
233 * struct trace_event_raw_<call> *field; <-- defined in stage 1
234 * struct trace_entry *entry;
235 * struct trace_seq *p = &iter->tmp_seq;
236 * int ret;
237 *
238 * entry = iter->ent;
239 *
240 * if (entry->type != event_<call>->event.type) {
241 * WARN_ON_ONCE(1);
242 * return TRACE_TYPE_UNHANDLED;
243 * }
244 *
245 * field = (typeof(field))entry;
246 *
247 * trace_seq_init(p);
248 * ret = trace_seq_printf(s, "%s: ", <call>);
249 * if (ret)
250 * ret = trace_seq_printf(s, <TP_printk> "\n");
251 * if (!ret)
252 * return TRACE_TYPE_PARTIAL_LINE;
253 *
254 * return TRACE_TYPE_HANDLED;
255 * }
256 *
257 * This is the method used to print the raw event to the trace
258 * output format. Note, this is not needed if the data is read
259 * in binary.
260 */
261
262 #undef __entry
263 #define __entry field
264
265 #undef TP_printk
266 #define TP_printk(fmt, args...) fmt "\n", args
267
268 #undef __get_dynamic_array
269 #define __get_dynamic_array(field) \
270 ((void *)__entry + (__entry->__data_loc_##field & 0xffff))
271
272 #undef __get_dynamic_array_len
273 #define __get_dynamic_array_len(field) \
274 ((__entry->__data_loc_##field >> 16) & 0xffff)
275
276 #undef __get_str
277 #define __get_str(field) ((char *)__get_dynamic_array(field))
278
279 #undef __get_bitmask
280 #define __get_bitmask(field) \
281 ({ \
282 void *__bitmask = __get_dynamic_array(field); \
283 unsigned int __bitmask_size; \
284 __bitmask_size = __get_dynamic_array_len(field); \
285 trace_print_bitmask_seq(p, __bitmask, __bitmask_size); \
286 })
287
288 #undef __print_flags
289 #define __print_flags(flag, delim, flag_array...) \
290 ({ \
291 static const struct trace_print_flags __flags[] = \
292 { flag_array, { -1, NULL }}; \
293 trace_print_flags_seq(p, delim, flag, __flags); \
294 })
295
296 #undef __print_symbolic
297 #define __print_symbolic(value, symbol_array...) \
298 ({ \
299 static const struct trace_print_flags symbols[] = \
300 { symbol_array, { -1, NULL }}; \
301 trace_print_symbols_seq(p, value, symbols); \
302 })
303
304 #undef __print_flags_u64
305 #undef __print_symbolic_u64
306 #if BITS_PER_LONG == 32
307 #define __print_flags_u64(flag, delim, flag_array...) \
308 ({ \
309 static const struct trace_print_flags_u64 __flags[] = \
310 { flag_array, { -1, NULL } }; \
311 trace_print_flags_seq_u64(p, delim, flag, __flags); \
312 })
313
314 #define __print_symbolic_u64(value, symbol_array...) \
315 ({ \
316 static const struct trace_print_flags_u64 symbols[] = \
317 { symbol_array, { -1, NULL } }; \
318 trace_print_symbols_seq_u64(p, value, symbols); \
319 })
320 #else
321 #define __print_flags_u64(flag, delim, flag_array...) \
322 __print_flags(flag, delim, flag_array)
323
324 #define __print_symbolic_u64(value, symbol_array...) \
325 __print_symbolic(value, symbol_array)
326 #endif
327
328 #undef __print_hex
329 #define __print_hex(buf, buf_len) \
330 trace_print_hex_seq(p, buf, buf_len, false)
331
332 #undef __print_hex_str
333 #define __print_hex_str(buf, buf_len) \
334 trace_print_hex_seq(p, buf, buf_len, true)
335
336 #undef __print_array
337 #define __print_array(array, count, el_size) \
338 ({ \
339 BUILD_BUG_ON(el_size != 1 && el_size != 2 && \
340 el_size != 4 && el_size != 8); \
341 trace_print_array_seq(p, array, count, el_size); \
342 })
343
344 #undef __print_hex_dump
345 #define __print_hex_dump(prefix_str, prefix_type, \
346 rowsize, groupsize, buf, len, ascii) \
347 trace_print_hex_dump_seq(p, prefix_str, prefix_type, \
348 rowsize, groupsize, buf, len, ascii)
349
350 #undef DECLARE_EVENT_CLASS
351 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
352 static notrace enum print_line_t \
353 trace_raw_output_##call(struct trace_iterator *iter, int flags, \
354 struct trace_event *trace_event) \
355 { \
356 struct trace_seq *s = &iter->seq; \
357 struct trace_seq __maybe_unused *p = &iter->tmp_seq; \
358 struct trace_event_raw_##call *field; \
359 int ret; \
360 \
361 field = (typeof(field))iter->ent; \
362 \
363 ret = trace_raw_output_prep(iter, trace_event); \
364 if (ret != TRACE_TYPE_HANDLED) \
365 return ret; \
366 \
367 trace_seq_printf(s, print); \
368 \
369 return trace_handle_return(s); \
370 } \
371 static struct trace_event_functions trace_event_type_funcs_##call = { \
372 .trace = trace_raw_output_##call, \
373 };
374
375 #undef DEFINE_EVENT_PRINT
376 #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
377 static notrace enum print_line_t \
378 trace_raw_output_##call(struct trace_iterator *iter, int flags, \
379 struct trace_event *event) \
380 { \
381 struct trace_event_raw_##template *field; \
382 struct trace_entry *entry; \
383 struct trace_seq *p = &iter->tmp_seq; \
384 \
385 entry = iter->ent; \
386 \
387 if (entry->type != event_##call.event.type) { \
388 WARN_ON_ONCE(1); \
389 return TRACE_TYPE_UNHANDLED; \
390 } \
391 \
392 field = (typeof(field))entry; \
393 \
394 trace_seq_init(p); \
395 return trace_output_call(iter, #call, print); \
396 } \
397 static struct trace_event_functions trace_event_type_funcs_##call = { \
398 .trace = trace_raw_output_##call, \
399 };
400
401 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
402
403 #undef __field_ext
404 #define __field_ext(_type, _item, _filter_type) { \
405 .type = #_type, .name = #_item, \
406 .size = sizeof(_type), .align = __alignof__(_type), \
407 .is_signed = is_signed_type(_type), .filter_type = _filter_type },
408
409 #undef __field_struct_ext
410 #define __field_struct_ext(_type, _item, _filter_type) { \
411 .type = #_type, .name = #_item, \
412 .size = sizeof(_type), .align = __alignof__(_type), \
413 0, .filter_type = _filter_type },
414
415 #undef __field
416 #define __field(type, item) __field_ext(type, item, FILTER_OTHER)
417
418 #undef __field_struct
419 #define __field_struct(type, item) __field_struct_ext(type, item, FILTER_OTHER)
420
421 #undef __array
422 #define __array(_type, _item, _len) { \
423 .type = #_type"["__stringify(_len)"]", .name = #_item, \
424 .size = sizeof(_type[_len]), .align = __alignof__(_type), \
425 .is_signed = is_signed_type(_type), .filter_type = FILTER_OTHER },
426
427 #undef __dynamic_array
428 #define __dynamic_array(_type, _item, _len) { \
429 .type = "__data_loc " #_type "[]", .name = #_item, \
430 .size = 4, .align = 4, \
431 .is_signed = is_signed_type(_type), .filter_type = FILTER_OTHER },
432
433 #undef __string
434 #define __string(item, src) __dynamic_array(char, item, -1)
435
436 #undef __bitmask
437 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
438
439 #undef DECLARE_EVENT_CLASS
440 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \
441 static struct trace_event_fields trace_event_fields_##call[] = { \
442 tstruct \
443 {} };
444
445 #undef DEFINE_EVENT_PRINT
446 #define DEFINE_EVENT_PRINT(template, name, proto, args, print)
447
448 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
449
450 /*
451 * remember the offset of each array from the beginning of the event.
452 */
453
454 #undef __entry
455 #define __entry entry
456
457 #undef __field
458 #define __field(type, item)
459
460 #undef __field_ext
461 #define __field_ext(type, item, filter_type)
462
463 #undef __field_struct
464 #define __field_struct(type, item)
465
466 #undef __field_struct_ext
467 #define __field_struct_ext(type, item, filter_type)
468
469 #undef __array
470 #define __array(type, item, len)
471
472 #undef __dynamic_array
473 #define __dynamic_array(type, item, len) \
474 __item_length = (len) * sizeof(type); \
475 __data_offsets->item = __data_size + \
476 offsetof(typeof(*entry), __data); \
477 __data_offsets->item |= __item_length << 16; \
478 __data_size += __item_length;
479
480 #undef __string
481 #define __string(item, src) __dynamic_array(char, item, \
482 strlen((src) ? (const char *)(src) : "(null)") + 1)
483
484 /*
485 * __bitmask_size_in_bytes_raw is the number of bytes needed to hold
486 * num_possible_cpus().
487 */
488 #define __bitmask_size_in_bytes_raw(nr_bits) \
489 (((nr_bits) + 7) / 8)
490
491 #define __bitmask_size_in_longs(nr_bits) \
492 ((__bitmask_size_in_bytes_raw(nr_bits) + \
493 ((BITS_PER_LONG / 8) - 1)) / (BITS_PER_LONG / 8))
494
495 /*
496 * __bitmask_size_in_bytes is the number of bytes needed to hold
497 * num_possible_cpus() padded out to the nearest long. This is what
498 * is saved in the buffer, just to be consistent.
499 */
500 #define __bitmask_size_in_bytes(nr_bits) \
501 (__bitmask_size_in_longs(nr_bits) * (BITS_PER_LONG / 8))
502
503 #undef __bitmask
504 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, \
505 __bitmask_size_in_longs(nr_bits))
506
507 #undef DECLARE_EVENT_CLASS
508 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
509 static inline notrace int trace_event_get_offsets_##call( \
510 struct trace_event_data_offsets_##call *__data_offsets, proto) \
511 { \
512 int __data_size = 0; \
513 int __maybe_unused __item_length; \
514 struct trace_event_raw_##call __maybe_unused *entry; \
515 \
516 tstruct; \
517 \
518 return __data_size; \
519 }
520
521 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
522
523 /*
524 * Stage 4 of the trace events.
525 *
526 * Override the macros in the event tracepoint header <trace/events/XXX.h>
527 * to include the following:
528 *
529 * For those macros defined with TRACE_EVENT:
530 *
531 * static struct trace_event_call event_<call>;
532 *
533 * static void trace_event_raw_event_<call>(void *__data, proto)
534 * {
535 * struct trace_event_file *trace_file = __data;
536 * struct trace_event_call *event_call = trace_file->event_call;
537 * struct trace_event_data_offsets_<call> __maybe_unused __data_offsets;
538 * unsigned long eflags = trace_file->flags;
539 * enum event_trigger_type __tt = ETT_NONE;
540 * struct ring_buffer_event *event;
541 * struct trace_event_raw_<call> *entry; <-- defined in stage 1
542 * struct trace_buffer *buffer;
543 * unsigned long irq_flags;
544 * int __data_size;
545 * int pc;
546 *
547 * if (!(eflags & EVENT_FILE_FL_TRIGGER_COND)) {
548 * if (eflags & EVENT_FILE_FL_TRIGGER_MODE)
549 * event_triggers_call(trace_file, NULL);
550 * if (eflags & EVENT_FILE_FL_SOFT_DISABLED)
551 * return;
552 * }
553 *
554 * local_save_flags(irq_flags);
555 * pc = preempt_count();
556 *
557 * __data_size = trace_event_get_offsets_<call>(&__data_offsets, args);
558 *
559 * event = trace_event_buffer_lock_reserve(&buffer, trace_file,
560 * event_<call>->event.type,
561 * sizeof(*entry) + __data_size,
562 * irq_flags, pc);
563 * if (!event)
564 * return;
565 * entry = ring_buffer_event_data(event);
566 *
567 * { <assign>; } <-- Here we assign the entries by the __field and
568 * __array macros.
569 *
570 * if (eflags & EVENT_FILE_FL_TRIGGER_COND)
571 * __tt = event_triggers_call(trace_file, entry);
572 *
573 * if (test_bit(EVENT_FILE_FL_SOFT_DISABLED_BIT,
574 * &trace_file->flags))
575 * ring_buffer_discard_commit(buffer, event);
576 * else if (!filter_check_discard(trace_file, entry, buffer, event))
577 * trace_buffer_unlock_commit(buffer, event, irq_flags, pc);
578 *
579 * if (__tt)
580 * event_triggers_post_call(trace_file, __tt);
581 * }
582 *
583 * static struct trace_event ftrace_event_type_<call> = {
584 * .trace = trace_raw_output_<call>, <-- stage 2
585 * };
586 *
587 * static char print_fmt_<call>[] = <TP_printk>;
588 *
589 * static struct trace_event_class __used event_class_<template> = {
590 * .system = "<system>",
591 * .fields_array = trace_event_fields_<call>,
592 * .fields = LIST_HEAD_INIT(event_class_##call.fields),
593 * .raw_init = trace_event_raw_init,
594 * .probe = trace_event_raw_event_##call,
595 * .reg = trace_event_reg,
596 * };
597 *
598 * static struct trace_event_call event_<call> = {
599 * .class = event_class_<template>,
600 * {
601 * .tp = &__tracepoint_<call>,
602 * },
603 * .event = &ftrace_event_type_<call>,
604 * .print_fmt = print_fmt_<call>,
605 * .flags = TRACE_EVENT_FL_TRACEPOINT,
606 * };
607 * // its only safe to use pointers when doing linker tricks to
608 * // create an array.
609 * static struct trace_event_call __used
610 * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>;
611 *
612 */
613
614 #ifdef CONFIG_PERF_EVENTS
615
616 #define _TRACE_PERF_PROTO(call, proto) \
617 static notrace void \
618 perf_trace_##call(void *__data, proto);
619
620 #define _TRACE_PERF_INIT(call) \
621 .perf_probe = perf_trace_##call,
622
623 #else
624 #define _TRACE_PERF_PROTO(call, proto)
625 #define _TRACE_PERF_INIT(call)
626 #endif /* CONFIG_PERF_EVENTS */
627
628 #undef __entry
629 #define __entry entry
630
631 #undef __field
632 #define __field(type, item)
633
634 #undef __field_struct
635 #define __field_struct(type, item)
636
637 #undef __array
638 #define __array(type, item, len)
639
640 #undef __dynamic_array
641 #define __dynamic_array(type, item, len) \
642 __entry->__data_loc_##item = __data_offsets.item;
643
644 #undef __string
645 #define __string(item, src) __dynamic_array(char, item, -1)
646
647 #undef __assign_str
648 #define __assign_str(dst, src) \
649 strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)");
650
651 #undef __bitmask
652 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
653
654 #undef __get_bitmask
655 #define __get_bitmask(field) (char *)__get_dynamic_array(field)
656
657 #undef __assign_bitmask
658 #define __assign_bitmask(dst, src, nr_bits) \
659 memcpy(__get_bitmask(dst), (src), __bitmask_size_in_bytes(nr_bits))
660
661 #undef TP_fast_assign
662 #define TP_fast_assign(args...) args
663
664 #undef __perf_count
665 #define __perf_count(c) (c)
666
667 #undef __perf_task
668 #define __perf_task(t) (t)
669
670 #undef DECLARE_EVENT_CLASS
671 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
672 \
673 static notrace void \
674 trace_event_raw_event_##call(void *__data, proto) \
675 { \
676 struct trace_event_file *trace_file = __data; \
677 struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\
678 struct trace_event_buffer fbuffer; \
679 struct trace_event_raw_##call *entry; \
680 int __data_size; \
681 \
682 if (trace_trigger_soft_disabled(trace_file)) \
683 return; \
684 \
685 __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \
686 \
687 entry = trace_event_buffer_reserve(&fbuffer, trace_file, \
688 sizeof(*entry) + __data_size); \
689 \
690 if (!entry) \
691 return; \
692 \
693 tstruct \
694 \
695 { assign; } \
696 \
697 trace_event_buffer_commit(&fbuffer); \
698 }
699 /*
700 * The ftrace_test_probe is compiled out, it is only here as a build time check
701 * to make sure that if the tracepoint handling changes, the ftrace probe will
702 * fail to compile unless it too is updated.
703 */
704
705 #undef DEFINE_EVENT
706 #define DEFINE_EVENT(template, call, proto, args) \
707 static inline void ftrace_test_probe_##call(void) \
708 { \
709 check_trace_callback_type_##call(trace_event_raw_event_##template); \
710 }
711
712 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
713
714 #undef __entry
715 #define __entry REC
716
717 #undef __print_flags
718 #undef __print_symbolic
719 #undef __print_hex
720 #undef __print_hex_str
721 #undef __get_dynamic_array
722 #undef __get_dynamic_array_len
723 #undef __get_str
724 #undef __get_bitmask
725 #undef __print_array
726 #undef __print_hex_dump
727
728 #undef TP_printk
729 #define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args)
730
731 #undef DECLARE_EVENT_CLASS
732 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
733 _TRACE_PERF_PROTO(call, PARAMS(proto)); \
734 static char print_fmt_##call[] = print; \
735 static struct trace_event_class __used __refdata event_class_##call = { \
736 .system = TRACE_SYSTEM_STRING, \
737 .fields_array = trace_event_fields_##call, \
738 .fields = LIST_HEAD_INIT(event_class_##call.fields),\
739 .raw_init = trace_event_raw_init, \
740 .probe = trace_event_raw_event_##call, \
741 .reg = trace_event_reg, \
742 _TRACE_PERF_INIT(call) \
743 };
744
745 #undef DEFINE_EVENT
746 #define DEFINE_EVENT(template, call, proto, args) \
747 \
748 static struct trace_event_call __used event_##call = { \
749 .class = &event_class_##template, \
750 { \
751 .tp = &__tracepoint_##call, \
752 }, \
753 .event.funcs = &trace_event_type_funcs_##template, \
754 .print_fmt = print_fmt_##template, \
755 .flags = TRACE_EVENT_FL_TRACEPOINT, \
756 }; \
757 static struct trace_event_call __used \
758 __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
759
760 #undef DEFINE_EVENT_PRINT
761 #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
762 \
763 static char print_fmt_##call[] = print; \
764 \
765 static struct trace_event_call __used event_##call = { \
766 .class = &event_class_##template, \
767 { \
768 .tp = &__tracepoint_##call, \
769 }, \
770 .event.funcs = &trace_event_type_funcs_##call, \
771 .print_fmt = print_fmt_##call, \
772 .flags = TRACE_EVENT_FL_TRACEPOINT, \
773 }; \
774 static struct trace_event_call __used \
775 __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
776
777 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
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