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Linux 4.16.11
[linux/fpc-iii.git] / include / trace / trace_events.h
blobbfda803b0a09319f02156958c40973a978ceba2f
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Stage 1 of the trace events.
4 *
5 * Override the macros in <trace/trace_events.h> to include the following:
6 *
7 * struct trace_event_raw_<call> {
8 * struct trace_entry ent;
9 * <type> <item>;
10 * <type2> <item2>[<len>];
11 * [...]
12 * };
13 *
14 * The <type> <item> is created by the __field(type, item) macro or
15 * the __array(type2, item2, len) macro.
16 * We simply do "type item;", and that will create the fields
17 * in the structure.
18 */
19
20 #include <linux/trace_events.h>
21
22 #ifndef TRACE_SYSTEM_VAR
23 #define TRACE_SYSTEM_VAR TRACE_SYSTEM
24 #endif
25
26 #define __app__(x, y) str__##x##y
27 #define __app(x, y) __app__(x, y)
28
29 #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name)
30
31 #define TRACE_MAKE_SYSTEM_STR() \
32 static const char TRACE_SYSTEM_STRING[] = \
33 __stringify(TRACE_SYSTEM)
34
35 TRACE_MAKE_SYSTEM_STR();
36
37 #undef TRACE_DEFINE_ENUM
38 #define TRACE_DEFINE_ENUM(a) \
39 static struct trace_eval_map __used __initdata \
40 __##TRACE_SYSTEM##_##a = \
41 { \
42 .system = TRACE_SYSTEM_STRING, \
43 .eval_string = #a, \
44 .eval_value = a \
45 }; \
46 static struct trace_eval_map __used \
47 __attribute__((section("_ftrace_eval_map"))) \
48 *TRACE_SYSTEM##_##a = &__##TRACE_SYSTEM##_##a
49
50 #undef TRACE_DEFINE_SIZEOF
51 #define TRACE_DEFINE_SIZEOF(a) \
52 static struct trace_eval_map __used __initdata \
53 __##TRACE_SYSTEM##_##a = \
54 { \
55 .system = TRACE_SYSTEM_STRING, \
56 .eval_string = "sizeof(" #a ")", \
57 .eval_value = sizeof(a) \
58 }; \
59 static struct trace_eval_map __used \
60 __attribute__((section("_ftrace_eval_map"))) \
61 *TRACE_SYSTEM##_##a = &__##TRACE_SYSTEM##_##a
62
63 /*
64 * DECLARE_EVENT_CLASS can be used to add a generic function
65 * handlers for events. That is, if all events have the same
66 * parameters and just have distinct trace points.
67 * Each tracepoint can be defined with DEFINE_EVENT and that
68 * will map the DECLARE_EVENT_CLASS to the tracepoint.
69 *
70 * TRACE_EVENT is a one to one mapping between tracepoint and template.
71 */
72 #undef TRACE_EVENT
73 #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
74 DECLARE_EVENT_CLASS(name, \
75 PARAMS(proto), \
76 PARAMS(args), \
77 PARAMS(tstruct), \
78 PARAMS(assign), \
79 PARAMS(print)); \
80 DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args));
81
82
83 #undef __field
84 #define __field(type, item) type item;
85
86 #undef __field_ext
87 #define __field_ext(type, item, filter_type) type item;
88
89 #undef __field_struct
90 #define __field_struct(type, item) type item;
91
92 #undef __field_struct_ext
93 #define __field_struct_ext(type, item, filter_type) type item;
94
95 #undef __array
96 #define __array(type, item, len) type item[len];
97
98 #undef __dynamic_array
99 #define __dynamic_array(type, item, len) u32 __data_loc_##item;
100
101 #undef __string
102 #define __string(item, src) __dynamic_array(char, item, -1)
103
104 #undef __bitmask
105 #define __bitmask(item, nr_bits) __dynamic_array(char, item, -1)
106
107 #undef TP_STRUCT__entry
108 #define TP_STRUCT__entry(args...) args
109
110 #undef DECLARE_EVENT_CLASS
111 #define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \
112 struct trace_event_raw_##name { \
113 struct trace_entry ent; \
114 tstruct \
115 char __data[0]; \
116 }; \
117 \
118 static struct trace_event_class event_class_##name;
119
120 #undef DEFINE_EVENT
121 #define DEFINE_EVENT(template, name, proto, args) \
122 static struct trace_event_call __used \
123 __attribute__((__aligned__(4))) event_##name
124
125 #undef DEFINE_EVENT_FN
126 #define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \
127 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
128
129 #undef DEFINE_EVENT_PRINT
130 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
131 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
132
133 /* Callbacks are meaningless to ftrace. */
134 #undef TRACE_EVENT_FN
135 #define TRACE_EVENT_FN(name, proto, args, tstruct, \
136 assign, print, reg, unreg) \
137 TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \
138 PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \
139
140 #undef TRACE_EVENT_FN_COND
141 #define TRACE_EVENT_FN_COND(name, proto, args, cond, tstruct, \
142 assign, print, reg, unreg) \
143 TRACE_EVENT_CONDITION(name, PARAMS(proto), PARAMS(args), PARAMS(cond), \
144 PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \
145
146 #undef TRACE_EVENT_FLAGS
147 #define TRACE_EVENT_FLAGS(name, value) \
148 __TRACE_EVENT_FLAGS(name, value)
149
150 #undef TRACE_EVENT_PERF_PERM
151 #define TRACE_EVENT_PERF_PERM(name, expr...) \
152 __TRACE_EVENT_PERF_PERM(name, expr)
153
154 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
155
156 /*
157 * Stage 2 of the trace events.
158 *
159 * Include the following:
160 *
161 * struct trace_event_data_offsets_<call> {
162 * u32 <item1>;
163 * u32 <item2>;
164 * [...]
165 * };
166 *
167 * The __dynamic_array() macro will create each u32 <item>, this is
168 * to keep the offset of each array from the beginning of the event.
169 * The size of an array is also encoded, in the higher 16 bits of <item>.
170 */
171
172 #undef TRACE_DEFINE_ENUM
173 #define TRACE_DEFINE_ENUM(a)
174
175 #undef TRACE_DEFINE_SIZEOF
176 #define TRACE_DEFINE_SIZEOF(a)
177
178 #undef __field
179 #define __field(type, item)
180
181 #undef __field_ext
182 #define __field_ext(type, item, filter_type)
183
184 #undef __field_struct
185 #define __field_struct(type, item)
186
187 #undef __field_struct_ext
188 #define __field_struct_ext(type, item, filter_type)
189
190 #undef __array
191 #define __array(type, item, len)
192
193 #undef __dynamic_array
194 #define __dynamic_array(type, item, len) u32 item;
195
196 #undef __string
197 #define __string(item, src) __dynamic_array(char, item, -1)
198
199 #undef __bitmask
200 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
201
202 #undef DECLARE_EVENT_CLASS
203 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
204 struct trace_event_data_offsets_##call { \
205 tstruct; \
206 };
207
208 #undef DEFINE_EVENT
209 #define DEFINE_EVENT(template, name, proto, args)
210
211 #undef DEFINE_EVENT_PRINT
212 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
213 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
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 <trace/trace_events.h> to include the following:
227 *
228 * enum print_line_t
229 * trace_raw_output_<call>(struct trace_iterator *iter, int flags)
230 * {
231 * struct trace_seq *s = &iter->seq;
232 * struct trace_event_raw_<call> *field; <-- defined in stage 1
233 * struct trace_entry *entry;
234 * struct trace_seq *p = &iter->tmp_seq;
235 * int ret;
236 *
237 * entry = iter->ent;
238 *
239 * if (entry->type != event_<call>->event.type) {
240 * WARN_ON_ONCE(1);
241 * return TRACE_TYPE_UNHANDLED;
242 * }
243 *
244 * field = (typeof(field))entry;
245 *
246 * trace_seq_init(p);
247 * ret = trace_seq_printf(s, "%s: ", <call>);
248 * if (ret)
249 * ret = trace_seq_printf(s, <TP_printk> "\n");
250 * if (!ret)
251 * return TRACE_TYPE_PARTIAL_LINE;
252 *
253 * return TRACE_TYPE_HANDLED;
254 * }
255 *
256 * This is the method used to print the raw event to the trace
257 * output format. Note, this is not needed if the data is read
258 * in binary.
259 */
260
261 #undef __entry
262 #define __entry field
263
264 #undef TP_printk
265 #define TP_printk(fmt, args...) fmt "\n", args
266
267 #undef __get_dynamic_array
268 #define __get_dynamic_array(field) \
269 ((void *)__entry + (__entry->__data_loc_##field & 0xffff))
270
271 #undef __get_dynamic_array_len
272 #define __get_dynamic_array_len(field) \
273 ((__entry->__data_loc_##field >> 16) & 0xffff)
274
275 #undef __get_str
276 #define __get_str(field) ((char *)__get_dynamic_array(field))
277
278 #undef __get_bitmask
279 #define __get_bitmask(field) \
280 ({ \
281 void *__bitmask = __get_dynamic_array(field); \
282 unsigned int __bitmask_size; \
283 __bitmask_size = __get_dynamic_array_len(field); \
284 trace_print_bitmask_seq(p, __bitmask, __bitmask_size); \
285 })
286
287 #undef __print_flags
288 #define __print_flags(flag, delim, flag_array...) \
289 ({ \
290 static const struct trace_print_flags __flags[] = \
291 { flag_array, { -1, NULL }}; \
292 trace_print_flags_seq(p, delim, flag, __flags); \
293 })
294
295 #undef __print_symbolic
296 #define __print_symbolic(value, symbol_array...) \
297 ({ \
298 static const struct trace_print_flags symbols[] = \
299 { symbol_array, { -1, NULL }}; \
300 trace_print_symbols_seq(p, value, symbols); \
301 })
302
303 #undef __print_flags_u64
304 #undef __print_symbolic_u64
305 #if BITS_PER_LONG == 32
306 #define __print_flags_u64(flag, delim, flag_array...) \
307 ({ \
308 static const struct trace_print_flags_u64 __flags[] = \
309 { flag_array, { -1, NULL } }; \
310 trace_print_flags_seq_u64(p, delim, flag, __flags); \
311 })
312
313 #define __print_symbolic_u64(value, symbol_array...) \
314 ({ \
315 static const struct trace_print_flags_u64 symbols[] = \
316 { symbol_array, { -1, NULL } }; \
317 trace_print_symbols_seq_u64(p, value, symbols); \
318 })
319 #else
320 #define __print_flags_u64(flag, delim, flag_array...) \
321 __print_flags(flag, delim, flag_array)
322
323 #define __print_symbolic_u64(value, symbol_array...) \
324 __print_symbolic(value, symbol_array)
325 #endif
326
327 #undef __print_hex
328 #define __print_hex(buf, buf_len) \
329 trace_print_hex_seq(p, buf, buf_len, false)
330
331 #undef __print_hex_str
332 #define __print_hex_str(buf, buf_len) \
333 trace_print_hex_seq(p, buf, buf_len, true)
334
335 #undef __print_array
336 #define __print_array(array, count, el_size) \
337 ({ \
338 BUILD_BUG_ON(el_size != 1 && el_size != 2 && \
339 el_size != 4 && el_size != 8); \
340 trace_print_array_seq(p, array, count, el_size); \
341 })
342
343 #undef DECLARE_EVENT_CLASS
344 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
345 static notrace enum print_line_t \
346 trace_raw_output_##call(struct trace_iterator *iter, int flags, \
347 struct trace_event *trace_event) \
348 { \
349 struct trace_seq *s = &iter->seq; \
350 struct trace_seq __maybe_unused *p = &iter->tmp_seq; \
351 struct trace_event_raw_##call *field; \
352 int ret; \
353 \
354 field = (typeof(field))iter->ent; \
355 \
356 ret = trace_raw_output_prep(iter, trace_event); \
357 if (ret != TRACE_TYPE_HANDLED) \
358 return ret; \
359 \
360 trace_seq_printf(s, print); \
361 \
362 return trace_handle_return(s); \
363 } \
364 static struct trace_event_functions trace_event_type_funcs_##call = { \
365 .trace = trace_raw_output_##call, \
366 };
367
368 #undef DEFINE_EVENT_PRINT
369 #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
370 static notrace enum print_line_t \
371 trace_raw_output_##call(struct trace_iterator *iter, int flags, \
372 struct trace_event *event) \
373 { \
374 struct trace_event_raw_##template *field; \
375 struct trace_entry *entry; \
376 struct trace_seq *p = &iter->tmp_seq; \
377 \
378 entry = iter->ent; \
379 \
380 if (entry->type != event_##call.event.type) { \
381 WARN_ON_ONCE(1); \
382 return TRACE_TYPE_UNHANDLED; \
383 } \
384 \
385 field = (typeof(field))entry; \
386 \
387 trace_seq_init(p); \
388 return trace_output_call(iter, #call, print); \
389 } \
390 static struct trace_event_functions trace_event_type_funcs_##call = { \
391 .trace = trace_raw_output_##call, \
392 };
393
394 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
395
396 #undef __field_ext
397 #define __field_ext(type, item, filter_type) \
398 ret = trace_define_field(event_call, #type, #item, \
399 offsetof(typeof(field), item), \
400 sizeof(field.item), \
401 is_signed_type(type), filter_type); \
402 if (ret) \
403 return ret;
404
405 #undef __field_struct_ext
406 #define __field_struct_ext(type, item, filter_type) \
407 ret = trace_define_field(event_call, #type, #item, \
408 offsetof(typeof(field), item), \
409 sizeof(field.item), \
410 0, filter_type); \
411 if (ret) \
412 return ret;
413
414 #undef __field
415 #define __field(type, item) __field_ext(type, item, FILTER_OTHER)
416
417 #undef __field_struct
418 #define __field_struct(type, item) __field_struct_ext(type, item, FILTER_OTHER)
419
420 #undef __array
421 #define __array(type, item, len) \
422 do { \
423 char *type_str = #type"["__stringify(len)"]"; \
424 BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
425 ret = trace_define_field(event_call, type_str, #item, \
426 offsetof(typeof(field), item), \
427 sizeof(field.item), \
428 is_signed_type(type), FILTER_OTHER); \
429 if (ret) \
430 return ret; \
431 } while (0);
432
433 #undef __dynamic_array
434 #define __dynamic_array(type, item, len) \
435 ret = trace_define_field(event_call, "__data_loc " #type "[]", #item, \
436 offsetof(typeof(field), __data_loc_##item), \
437 sizeof(field.__data_loc_##item), \
438 is_signed_type(type), FILTER_OTHER);
439
440 #undef __string
441 #define __string(item, src) __dynamic_array(char, item, -1)
442
443 #undef __bitmask
444 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
445
446 #undef DECLARE_EVENT_CLASS
447 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \
448 static int notrace __init \
449 trace_event_define_fields_##call(struct trace_event_call *event_call) \
450 { \
451 struct trace_event_raw_##call field; \
452 int ret; \
453 \
454 tstruct; \
455 \
456 return ret; \
457 }
458
459 #undef DEFINE_EVENT
460 #define DEFINE_EVENT(template, name, proto, args)
461
462 #undef DEFINE_EVENT_PRINT
463 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
464 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
465
466 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
467
468 /*
469 * remember the offset of each array from the beginning of the event.
470 */
471
472 #undef __entry
473 #define __entry entry
474
475 #undef __field
476 #define __field(type, item)
477
478 #undef __field_ext
479 #define __field_ext(type, item, filter_type)
480
481 #undef __field_struct
482 #define __field_struct(type, item)
483
484 #undef __field_struct_ext
485 #define __field_struct_ext(type, item, filter_type)
486
487 #undef __array
488 #define __array(type, item, len)
489
490 #undef __dynamic_array
491 #define __dynamic_array(type, item, len) \
492 __item_length = (len) * sizeof(type); \
493 __data_offsets->item = __data_size + \
494 offsetof(typeof(*entry), __data); \
495 __data_offsets->item |= __item_length << 16; \
496 __data_size += __item_length;
497
498 #undef __string
499 #define __string(item, src) __dynamic_array(char, item, \
500 strlen((src) ? (const char *)(src) : "(null)") + 1)
501
502 /*
503 * __bitmask_size_in_bytes_raw is the number of bytes needed to hold
504 * num_possible_cpus().
505 */
506 #define __bitmask_size_in_bytes_raw(nr_bits) \
507 (((nr_bits) + 7) / 8)
508
509 #define __bitmask_size_in_longs(nr_bits) \
510 ((__bitmask_size_in_bytes_raw(nr_bits) + \
511 ((BITS_PER_LONG / 8) - 1)) / (BITS_PER_LONG / 8))
512
513 /*
514 * __bitmask_size_in_bytes is the number of bytes needed to hold
515 * num_possible_cpus() padded out to the nearest long. This is what
516 * is saved in the buffer, just to be consistent.
517 */
518 #define __bitmask_size_in_bytes(nr_bits) \
519 (__bitmask_size_in_longs(nr_bits) * (BITS_PER_LONG / 8))
520
521 #undef __bitmask
522 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, \
523 __bitmask_size_in_longs(nr_bits))
524
525 #undef DECLARE_EVENT_CLASS
526 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
527 static inline notrace int trace_event_get_offsets_##call( \
528 struct trace_event_data_offsets_##call *__data_offsets, proto) \
529 { \
530 int __data_size = 0; \
531 int __maybe_unused __item_length; \
532 struct trace_event_raw_##call __maybe_unused *entry; \
533 \
534 tstruct; \
535 \
536 return __data_size; \
537 }
538
539 #undef DEFINE_EVENT
540 #define DEFINE_EVENT(template, name, proto, args)
541
542 #undef DEFINE_EVENT_PRINT
543 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
544 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
545
546 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
547
548 /*
549 * Stage 4 of the trace events.
550 *
551 * Override the macros in <trace/trace_events.h> to include the following:
552 *
553 * For those macros defined with TRACE_EVENT:
554 *
555 * static struct trace_event_call event_<call>;
556 *
557 * static void trace_event_raw_event_<call>(void *__data, proto)
558 * {
559 * struct trace_event_file *trace_file = __data;
560 * struct trace_event_call *event_call = trace_file->event_call;
561 * struct trace_event_data_offsets_<call> __maybe_unused __data_offsets;
562 * unsigned long eflags = trace_file->flags;
563 * enum event_trigger_type __tt = ETT_NONE;
564 * struct ring_buffer_event *event;
565 * struct trace_event_raw_<call> *entry; <-- defined in stage 1
566 * struct ring_buffer *buffer;
567 * unsigned long irq_flags;
568 * int __data_size;
569 * int pc;
570 *
571 * if (!(eflags & EVENT_FILE_FL_TRIGGER_COND)) {
572 * if (eflags & EVENT_FILE_FL_TRIGGER_MODE)
573 * event_triggers_call(trace_file, NULL);
574 * if (eflags & EVENT_FILE_FL_SOFT_DISABLED)
575 * return;
576 * }
577 *
578 * local_save_flags(irq_flags);
579 * pc = preempt_count();
580 *
581 * __data_size = trace_event_get_offsets_<call>(&__data_offsets, args);
582 *
583 * event = trace_event_buffer_lock_reserve(&buffer, trace_file,
584 * event_<call>->event.type,
585 * sizeof(*entry) + __data_size,
586 * irq_flags, pc);
587 * if (!event)
588 * return;
589 * entry = ring_buffer_event_data(event);
590 *
591 * { <assign>; } <-- Here we assign the entries by the __field and
592 * __array macros.
593 *
594 * if (eflags & EVENT_FILE_FL_TRIGGER_COND)
595 * __tt = event_triggers_call(trace_file, entry);
596 *
597 * if (test_bit(EVENT_FILE_FL_SOFT_DISABLED_BIT,
598 * &trace_file->flags))
599 * ring_buffer_discard_commit(buffer, event);
600 * else if (!filter_check_discard(trace_file, entry, buffer, event))
601 * trace_buffer_unlock_commit(buffer, event, irq_flags, pc);
602 *
603 * if (__tt)
604 * event_triggers_post_call(trace_file, __tt);
605 * }
606 *
607 * static struct trace_event ftrace_event_type_<call> = {
608 * .trace = trace_raw_output_<call>, <-- stage 2
609 * };
610 *
611 * static char print_fmt_<call>[] = <TP_printk>;
612 *
613 * static struct trace_event_class __used event_class_<template> = {
614 * .system = "<system>",
615 * .define_fields = trace_event_define_fields_<call>,
616 * .fields = LIST_HEAD_INIT(event_class_##call.fields),
617 * .raw_init = trace_event_raw_init,
618 * .probe = trace_event_raw_event_##call,
619 * .reg = trace_event_reg,
620 * };
621 *
622 * static struct trace_event_call event_<call> = {
623 * .class = event_class_<template>,
624 * {
625 * .tp = &__tracepoint_<call>,
626 * },
627 * .event = &ftrace_event_type_<call>,
628 * .print_fmt = print_fmt_<call>,
629 * .flags = TRACE_EVENT_FL_TRACEPOINT,
630 * };
631 * // its only safe to use pointers when doing linker tricks to
632 * // create an array.
633 * static struct trace_event_call __used
634 * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>;
635 *
636 */
637
638 #ifdef CONFIG_PERF_EVENTS
639
640 #define _TRACE_PERF_PROTO(call, proto) \
641 static notrace void \
642 perf_trace_##call(void *__data, proto);
643
644 #define _TRACE_PERF_INIT(call) \
645 .perf_probe = perf_trace_##call,
646
647 #else
648 #define _TRACE_PERF_PROTO(call, proto)
649 #define _TRACE_PERF_INIT(call)
650 #endif /* CONFIG_PERF_EVENTS */
651
652 #undef __entry
653 #define __entry entry
654
655 #undef __field
656 #define __field(type, item)
657
658 #undef __field_struct
659 #define __field_struct(type, item)
660
661 #undef __array
662 #define __array(type, item, len)
663
664 #undef __dynamic_array
665 #define __dynamic_array(type, item, len) \
666 __entry->__data_loc_##item = __data_offsets.item;
667
668 #undef __string
669 #define __string(item, src) __dynamic_array(char, item, -1)
670
671 #undef __assign_str
672 #define __assign_str(dst, src) \
673 strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)");
674
675 #undef __bitmask
676 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
677
678 #undef __get_bitmask
679 #define __get_bitmask(field) (char *)__get_dynamic_array(field)
680
681 #undef __assign_bitmask
682 #define __assign_bitmask(dst, src, nr_bits) \
683 memcpy(__get_bitmask(dst), (src), __bitmask_size_in_bytes(nr_bits))
684
685 #undef TP_fast_assign
686 #define TP_fast_assign(args...) args
687
688 #undef __perf_count
689 #define __perf_count(c) (c)
690
691 #undef __perf_task
692 #define __perf_task(t) (t)
693
694 #undef DECLARE_EVENT_CLASS
695 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
696 \
697 static notrace void \
698 trace_event_raw_event_##call(void *__data, proto) \
699 { \
700 struct trace_event_file *trace_file = __data; \
701 struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\
702 struct trace_event_buffer fbuffer; \
703 struct trace_event_raw_##call *entry; \
704 int __data_size; \
705 \
706 if (trace_trigger_soft_disabled(trace_file)) \
707 return; \
708 \
709 __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \
710 \
711 entry = trace_event_buffer_reserve(&fbuffer, trace_file, \
712 sizeof(*entry) + __data_size); \
713 \
714 if (!entry) \
715 return; \
716 \
717 tstruct \
718 \
719 { assign; } \
720 \
721 trace_event_buffer_commit(&fbuffer); \
722 }
723 /*
724 * The ftrace_test_probe is compiled out, it is only here as a build time check
725 * to make sure that if the tracepoint handling changes, the ftrace probe will
726 * fail to compile unless it too is updated.
727 */
728
729 #undef DEFINE_EVENT
730 #define DEFINE_EVENT(template, call, proto, args) \
731 static inline void ftrace_test_probe_##call(void) \
732 { \
733 check_trace_callback_type_##call(trace_event_raw_event_##template); \
734 }
735
736 #undef DEFINE_EVENT_PRINT
737 #define DEFINE_EVENT_PRINT(template, name, proto, args, print)
738
739 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
740
741 #undef __entry
742 #define __entry REC
743
744 #undef __print_flags
745 #undef __print_symbolic
746 #undef __print_hex
747 #undef __print_hex_str
748 #undef __get_dynamic_array
749 #undef __get_dynamic_array_len
750 #undef __get_str
751 #undef __get_bitmask
752 #undef __print_array
753
754 #undef TP_printk
755 #define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args)
756
757 #undef DECLARE_EVENT_CLASS
758 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
759 _TRACE_PERF_PROTO(call, PARAMS(proto)); \
760 static char print_fmt_##call[] = print; \
761 static struct trace_event_class __used __refdata event_class_##call = { \
762 .system = TRACE_SYSTEM_STRING, \
763 .define_fields = trace_event_define_fields_##call, \
764 .fields = LIST_HEAD_INIT(event_class_##call.fields),\
765 .raw_init = trace_event_raw_init, \
766 .probe = trace_event_raw_event_##call, \
767 .reg = trace_event_reg, \
768 _TRACE_PERF_INIT(call) \
769 };
770
771 #undef DEFINE_EVENT
772 #define DEFINE_EVENT(template, call, proto, args) \
773 \
774 static struct trace_event_call __used event_##call = { \
775 .class = &event_class_##template, \
776 { \
777 .tp = &__tracepoint_##call, \
778 }, \
779 .event.funcs = &trace_event_type_funcs_##template, \
780 .print_fmt = print_fmt_##template, \
781 .flags = TRACE_EVENT_FL_TRACEPOINT, \
782 }; \
783 static struct trace_event_call __used \
784 __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
785
786 #undef DEFINE_EVENT_PRINT
787 #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
788 \
789 static char print_fmt_##call[] = print; \
790 \
791 static struct trace_event_call __used event_##call = { \
792 .class = &event_class_##template, \
793 { \
794 .tp = &__tracepoint_##call, \
795 }, \
796 .event.funcs = &trace_event_type_funcs_##call, \
797 .print_fmt = print_fmt_##call, \
798 .flags = TRACE_EVENT_FL_TRACEPOINT, \
799 }; \
800 static struct trace_event_call __used \
801 __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
802
803 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
Linux with added FPC-III support