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use higher maxsend/mtu if load is low
[cor.git] / include / trace / trace_events.h
blob472b33d23a10ea628b1d22ff2ea9f901460e269f
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 __print_hex_dump
344 #define __print_hex_dump(prefix_str, prefix_type, \
345 rowsize, groupsize, buf, len, ascii) \
346 trace_print_hex_dump_seq(p, prefix_str, prefix_type, \
347 rowsize, groupsize, buf, len, ascii)
348
349 #undef DECLARE_EVENT_CLASS
350 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
351 static notrace enum print_line_t \
352 trace_raw_output_##call(struct trace_iterator *iter, int flags, \
353 struct trace_event *trace_event) \
354 { \
355 struct trace_seq *s = &iter->seq; \
356 struct trace_seq __maybe_unused *p = &iter->tmp_seq; \
357 struct trace_event_raw_##call *field; \
358 int ret; \
359 \
360 field = (typeof(field))iter->ent; \
361 \
362 ret = trace_raw_output_prep(iter, trace_event); \
363 if (ret != TRACE_TYPE_HANDLED) \
364 return ret; \
365 \
366 trace_seq_printf(s, print); \
367 \
368 return trace_handle_return(s); \
369 } \
370 static struct trace_event_functions trace_event_type_funcs_##call = { \
371 .trace = trace_raw_output_##call, \
372 };
373
374 #undef DEFINE_EVENT_PRINT
375 #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
376 static notrace enum print_line_t \
377 trace_raw_output_##call(struct trace_iterator *iter, int flags, \
378 struct trace_event *event) \
379 { \
380 struct trace_event_raw_##template *field; \
381 struct trace_entry *entry; \
382 struct trace_seq *p = &iter->tmp_seq; \
383 \
384 entry = iter->ent; \
385 \
386 if (entry->type != event_##call.event.type) { \
387 WARN_ON_ONCE(1); \
388 return TRACE_TYPE_UNHANDLED; \
389 } \
390 \
391 field = (typeof(field))entry; \
392 \
393 trace_seq_init(p); \
394 return trace_output_call(iter, #call, print); \
395 } \
396 static struct trace_event_functions trace_event_type_funcs_##call = { \
397 .trace = trace_raw_output_##call, \
398 };
399
400 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
401
402 #undef __field_ext
403 #define __field_ext(type, item, filter_type) \
404 ret = trace_define_field(event_call, #type, #item, \
405 offsetof(typeof(field), item), \
406 sizeof(field.item), \
407 is_signed_type(type), filter_type); \
408 if (ret) \
409 return ret;
410
411 #undef __field_struct_ext
412 #define __field_struct_ext(type, item, filter_type) \
413 ret = trace_define_field(event_call, #type, #item, \
414 offsetof(typeof(field), item), \
415 sizeof(field.item), \
416 0, filter_type); \
417 if (ret) \
418 return ret;
419
420 #undef __field
421 #define __field(type, item) __field_ext(type, item, FILTER_OTHER)
422
423 #undef __field_struct
424 #define __field_struct(type, item) __field_struct_ext(type, item, FILTER_OTHER)
425
426 #undef __array
427 #define __array(type, item, len) \
428 do { \
429 char *type_str = #type"["__stringify(len)"]"; \
430 BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
431 BUILD_BUG_ON(len <= 0); \
432 ret = trace_define_field(event_call, type_str, #item, \
433 offsetof(typeof(field), item), \
434 sizeof(field.item), \
435 is_signed_type(type), FILTER_OTHER); \
436 if (ret) \
437 return ret; \
438 } while (0);
439
440 #undef __dynamic_array
441 #define __dynamic_array(type, item, len) \
442 ret = trace_define_field(event_call, "__data_loc " #type "[]", #item, \
443 offsetof(typeof(field), __data_loc_##item), \
444 sizeof(field.__data_loc_##item), \
445 is_signed_type(type), FILTER_OTHER);
446
447 #undef __string
448 #define __string(item, src) __dynamic_array(char, item, -1)
449
450 #undef __bitmask
451 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
452
453 #undef DECLARE_EVENT_CLASS
454 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \
455 static int notrace __init \
456 trace_event_define_fields_##call(struct trace_event_call *event_call) \
457 { \
458 struct trace_event_raw_##call field; \
459 int ret; \
460 \
461 tstruct; \
462 \
463 return ret; \
464 }
465
466 #undef DEFINE_EVENT
467 #define DEFINE_EVENT(template, name, proto, args)
468
469 #undef DEFINE_EVENT_PRINT
470 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
471 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
472
473 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
474
475 /*
476 * remember the offset of each array from the beginning of the event.
477 */
478
479 #undef __entry
480 #define __entry entry
481
482 #undef __field
483 #define __field(type, item)
484
485 #undef __field_ext
486 #define __field_ext(type, item, filter_type)
487
488 #undef __field_struct
489 #define __field_struct(type, item)
490
491 #undef __field_struct_ext
492 #define __field_struct_ext(type, item, filter_type)
493
494 #undef __array
495 #define __array(type, item, len)
496
497 #undef __dynamic_array
498 #define __dynamic_array(type, item, len) \
499 __item_length = (len) * sizeof(type); \
500 __data_offsets->item = __data_size + \
501 offsetof(typeof(*entry), __data); \
502 __data_offsets->item |= __item_length << 16; \
503 __data_size += __item_length;
504
505 #undef __string
506 #define __string(item, src) __dynamic_array(char, item, \
507 strlen((src) ? (const char *)(src) : "(null)") + 1)
508
509 /*
510 * __bitmask_size_in_bytes_raw is the number of bytes needed to hold
511 * num_possible_cpus().
512 */
513 #define __bitmask_size_in_bytes_raw(nr_bits) \
514 (((nr_bits) + 7) / 8)
515
516 #define __bitmask_size_in_longs(nr_bits) \
517 ((__bitmask_size_in_bytes_raw(nr_bits) + \
518 ((BITS_PER_LONG / 8) - 1)) / (BITS_PER_LONG / 8))
519
520 /*
521 * __bitmask_size_in_bytes is the number of bytes needed to hold
522 * num_possible_cpus() padded out to the nearest long. This is what
523 * is saved in the buffer, just to be consistent.
524 */
525 #define __bitmask_size_in_bytes(nr_bits) \
526 (__bitmask_size_in_longs(nr_bits) * (BITS_PER_LONG / 8))
527
528 #undef __bitmask
529 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, \
530 __bitmask_size_in_longs(nr_bits))
531
532 #undef DECLARE_EVENT_CLASS
533 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
534 static inline notrace int trace_event_get_offsets_##call( \
535 struct trace_event_data_offsets_##call *__data_offsets, proto) \
536 { \
537 int __data_size = 0; \
538 int __maybe_unused __item_length; \
539 struct trace_event_raw_##call __maybe_unused *entry; \
540 \
541 tstruct; \
542 \
543 return __data_size; \
544 }
545
546 #undef DEFINE_EVENT
547 #define DEFINE_EVENT(template, name, proto, args)
548
549 #undef DEFINE_EVENT_PRINT
550 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
551 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
552
553 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
554
555 /*
556 * Stage 4 of the trace events.
557 *
558 * Override the macros in <trace/trace_events.h> to include the following:
559 *
560 * For those macros defined with TRACE_EVENT:
561 *
562 * static struct trace_event_call event_<call>;
563 *
564 * static void trace_event_raw_event_<call>(void *__data, proto)
565 * {
566 * struct trace_event_file *trace_file = __data;
567 * struct trace_event_call *event_call = trace_file->event_call;
568 * struct trace_event_data_offsets_<call> __maybe_unused __data_offsets;
569 * unsigned long eflags = trace_file->flags;
570 * enum event_trigger_type __tt = ETT_NONE;
571 * struct ring_buffer_event *event;
572 * struct trace_event_raw_<call> *entry; <-- defined in stage 1
573 * struct ring_buffer *buffer;
574 * unsigned long irq_flags;
575 * int __data_size;
576 * int pc;
577 *
578 * if (!(eflags & EVENT_FILE_FL_TRIGGER_COND)) {
579 * if (eflags & EVENT_FILE_FL_TRIGGER_MODE)
580 * event_triggers_call(trace_file, NULL);
581 * if (eflags & EVENT_FILE_FL_SOFT_DISABLED)
582 * return;
583 * }
584 *
585 * local_save_flags(irq_flags);
586 * pc = preempt_count();
587 *
588 * __data_size = trace_event_get_offsets_<call>(&__data_offsets, args);
589 *
590 * event = trace_event_buffer_lock_reserve(&buffer, trace_file,
591 * event_<call>->event.type,
592 * sizeof(*entry) + __data_size,
593 * irq_flags, pc);
594 * if (!event)
595 * return;
596 * entry = ring_buffer_event_data(event);
597 *
598 * { <assign>; } <-- Here we assign the entries by the __field and
599 * __array macros.
600 *
601 * if (eflags & EVENT_FILE_FL_TRIGGER_COND)
602 * __tt = event_triggers_call(trace_file, entry);
603 *
604 * if (test_bit(EVENT_FILE_FL_SOFT_DISABLED_BIT,
605 * &trace_file->flags))
606 * ring_buffer_discard_commit(buffer, event);
607 * else if (!filter_check_discard(trace_file, entry, buffer, event))
608 * trace_buffer_unlock_commit(buffer, event, irq_flags, pc);
609 *
610 * if (__tt)
611 * event_triggers_post_call(trace_file, __tt);
612 * }
613 *
614 * static struct trace_event ftrace_event_type_<call> = {
615 * .trace = trace_raw_output_<call>, <-- stage 2
616 * };
617 *
618 * static char print_fmt_<call>[] = <TP_printk>;
619 *
620 * static struct trace_event_class __used event_class_<template> = {
621 * .system = "<system>",
622 * .define_fields = trace_event_define_fields_<call>,
623 * .fields = LIST_HEAD_INIT(event_class_##call.fields),
624 * .raw_init = trace_event_raw_init,
625 * .probe = trace_event_raw_event_##call,
626 * .reg = trace_event_reg,
627 * };
628 *
629 * static struct trace_event_call event_<call> = {
630 * .class = event_class_<template>,
631 * {
632 * .tp = &__tracepoint_<call>,
633 * },
634 * .event = &ftrace_event_type_<call>,
635 * .print_fmt = print_fmt_<call>,
636 * .flags = TRACE_EVENT_FL_TRACEPOINT,
637 * };
638 * // its only safe to use pointers when doing linker tricks to
639 * // create an array.
640 * static struct trace_event_call __used
641 * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>;
642 *
643 */
644
645 #ifdef CONFIG_PERF_EVENTS
646
647 #define _TRACE_PERF_PROTO(call, proto) \
648 static notrace void \
649 perf_trace_##call(void *__data, proto);
650
651 #define _TRACE_PERF_INIT(call) \
652 .perf_probe = perf_trace_##call,
653
654 #else
655 #define _TRACE_PERF_PROTO(call, proto)
656 #define _TRACE_PERF_INIT(call)
657 #endif /* CONFIG_PERF_EVENTS */
658
659 #undef __entry
660 #define __entry entry
661
662 #undef __field
663 #define __field(type, item)
664
665 #undef __field_struct
666 #define __field_struct(type, item)
667
668 #undef __array
669 #define __array(type, item, len)
670
671 #undef __dynamic_array
672 #define __dynamic_array(type, item, len) \
673 __entry->__data_loc_##item = __data_offsets.item;
674
675 #undef __string
676 #define __string(item, src) __dynamic_array(char, item, -1)
677
678 #undef __assign_str
679 #define __assign_str(dst, src) \
680 strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)");
681
682 #undef __bitmask
683 #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
684
685 #undef __get_bitmask
686 #define __get_bitmask(field) (char *)__get_dynamic_array(field)
687
688 #undef __assign_bitmask
689 #define __assign_bitmask(dst, src, nr_bits) \
690 memcpy(__get_bitmask(dst), (src), __bitmask_size_in_bytes(nr_bits))
691
692 #undef TP_fast_assign
693 #define TP_fast_assign(args...) args
694
695 #undef __perf_count
696 #define __perf_count(c) (c)
697
698 #undef __perf_task
699 #define __perf_task(t) (t)
700
701 #undef DECLARE_EVENT_CLASS
702 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
703 \
704 static notrace void \
705 trace_event_raw_event_##call(void *__data, proto) \
706 { \
707 struct trace_event_file *trace_file = __data; \
708 struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\
709 struct trace_event_buffer fbuffer; \
710 struct trace_event_raw_##call *entry; \
711 int __data_size; \
712 \
713 if (trace_trigger_soft_disabled(trace_file)) \
714 return; \
715 \
716 __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \
717 \
718 entry = trace_event_buffer_reserve(&fbuffer, trace_file, \
719 sizeof(*entry) + __data_size); \
720 \
721 if (!entry) \
722 return; \
723 \
724 tstruct \
725 \
726 { assign; } \
727 \
728 trace_event_buffer_commit(&fbuffer); \
729 }
730 /*
731 * The ftrace_test_probe is compiled out, it is only here as a build time check
732 * to make sure that if the tracepoint handling changes, the ftrace probe will
733 * fail to compile unless it too is updated.
734 */
735
736 #undef DEFINE_EVENT
737 #define DEFINE_EVENT(template, call, proto, args) \
738 static inline void ftrace_test_probe_##call(void) \
739 { \
740 check_trace_callback_type_##call(trace_event_raw_event_##template); \
741 }
742
743 #undef DEFINE_EVENT_PRINT
744 #define DEFINE_EVENT_PRINT(template, name, proto, args, print)
745
746 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
747
748 #undef __entry
749 #define __entry REC
750
751 #undef __print_flags
752 #undef __print_symbolic
753 #undef __print_hex
754 #undef __print_hex_str
755 #undef __get_dynamic_array
756 #undef __get_dynamic_array_len
757 #undef __get_str
758 #undef __get_bitmask
759 #undef __print_array
760 #undef __print_hex_dump
761
762 #undef TP_printk
763 #define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args)
764
765 #undef DECLARE_EVENT_CLASS
766 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
767 _TRACE_PERF_PROTO(call, PARAMS(proto)); \
768 static char print_fmt_##call[] = print; \
769 static struct trace_event_class __used __refdata event_class_##call = { \
770 .system = TRACE_SYSTEM_STRING, \
771 .define_fields = trace_event_define_fields_##call, \
772 .fields = LIST_HEAD_INIT(event_class_##call.fields),\
773 .raw_init = trace_event_raw_init, \
774 .probe = trace_event_raw_event_##call, \
775 .reg = trace_event_reg, \
776 _TRACE_PERF_INIT(call) \
777 };
778
779 #undef DEFINE_EVENT
780 #define DEFINE_EVENT(template, call, proto, args) \
781 \
782 static struct trace_event_call __used event_##call = { \
783 .class = &event_class_##template, \
784 { \
785 .tp = &__tracepoint_##call, \
786 }, \
787 .event.funcs = &trace_event_type_funcs_##template, \
788 .print_fmt = print_fmt_##template, \
789 .flags = TRACE_EVENT_FL_TRACEPOINT, \
790 }; \
791 static struct trace_event_call __used \
792 __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
793
794 #undef DEFINE_EVENT_PRINT
795 #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
796 \
797 static char print_fmt_##call[] = print; \
798 \
799 static struct trace_event_call __used event_##call = { \
800 .class = &event_class_##template, \
801 { \
802 .tp = &__tracepoint_##call, \
803 }, \
804 .event.funcs = &trace_event_type_funcs_##call, \
805 .print_fmt = print_fmt_##call, \
806 .flags = TRACE_EVENT_FL_TRACEPOINT, \
807 }; \
808 static struct trace_event_call __used \
809 __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
810
811 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
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