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Linux kernel mirror (for testing)
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linux
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
36TRACE_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 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
215
216#undef TRACE_EVENT_FLAGS
217#define TRACE_EVENT_FLAGS(event, flag)
218
219#undef TRACE_EVENT_PERF_PERM
220#define TRACE_EVENT_PERF_PERM(event, expr...)
221
222#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
223
224/*
225 * Stage 3 of the trace events.
226 *
227 * Override the macros in the event tracepoint header <trace/events/XXX.h>
228 * to include the following:
229 *
230 * enum print_line_t
231 * trace_raw_output_<call>(struct trace_iterator *iter, int flags)
232 * {
233 * struct trace_seq *s = &iter->seq;
234 * struct trace_event_raw_<call> *field; <-- defined in stage 1
235 * struct trace_entry *entry;
236 * struct trace_seq *p = &iter->tmp_seq;
237 * int ret;
238 *
239 * entry = iter->ent;
240 *
241 * if (entry->type != event_<call>->event.type) {
242 * WARN_ON_ONCE(1);
243 * return TRACE_TYPE_UNHANDLED;
244 * }
245 *
246 * field = (typeof(field))entry;
247 *
248 * trace_seq_init(p);
249 * ret = trace_seq_printf(s, "%s: ", <call>);
250 * if (ret)
251 * ret = trace_seq_printf(s, <TP_printk> "\n");
252 * if (!ret)
253 * return TRACE_TYPE_PARTIAL_LINE;
254 *
255 * return TRACE_TYPE_HANDLED;
256 * }
257 *
258 * This is the method used to print the raw event to the trace
259 * output format. Note, this is not needed if the data is read
260 * in binary.
261 */
262
263#undef __entry
264#define __entry field
265
266#undef TP_printk
267#define TP_printk(fmt, args...) fmt "\n", args
268
269#undef __get_dynamic_array
270#define __get_dynamic_array(field) \
271 ((void *)__entry + (__entry->__data_loc_##field & 0xffff))
272
273#undef __get_dynamic_array_len
274#define __get_dynamic_array_len(field) \
275 ((__entry->__data_loc_##field >> 16) & 0xffff)
276
277#undef __get_str
278#define __get_str(field) ((char *)__get_dynamic_array(field))
279
280#undef __get_bitmask
281#define __get_bitmask(field) \
282 ({ \
283 void *__bitmask = __get_dynamic_array(field); \
284 unsigned int __bitmask_size; \
285 __bitmask_size = __get_dynamic_array_len(field); \
286 trace_print_bitmask_seq(p, __bitmask, __bitmask_size); \
287 })
288
289#undef __print_flags
290#define __print_flags(flag, delim, flag_array...) \
291 ({ \
292 static const struct trace_print_flags __flags[] = \
293 { flag_array, { -1, NULL }}; \
294 trace_print_flags_seq(p, delim, flag, __flags); \
295 })
296
297#undef __print_symbolic
298#define __print_symbolic(value, symbol_array...) \
299 ({ \
300 static const struct trace_print_flags symbols[] = \
301 { symbol_array, { -1, NULL }}; \
302 trace_print_symbols_seq(p, value, symbols); \
303 })
304
305#undef __print_flags_u64
306#undef __print_symbolic_u64
307#if BITS_PER_LONG == 32
308#define __print_flags_u64(flag, delim, flag_array...) \
309 ({ \
310 static const struct trace_print_flags_u64 __flags[] = \
311 { flag_array, { -1, NULL } }; \
312 trace_print_flags_seq_u64(p, delim, flag, __flags); \
313 })
314
315#define __print_symbolic_u64(value, symbol_array...) \
316 ({ \
317 static const struct trace_print_flags_u64 symbols[] = \
318 { symbol_array, { -1, NULL } }; \
319 trace_print_symbols_seq_u64(p, value, symbols); \
320 })
321#else
322#define __print_flags_u64(flag, delim, flag_array...) \
323 __print_flags(flag, delim, flag_array)
324
325#define __print_symbolic_u64(value, symbol_array...) \
326 __print_symbolic(value, symbol_array)
327#endif
328
329#undef __print_hex
330#define __print_hex(buf, buf_len) \
331 trace_print_hex_seq(p, buf, buf_len, false)
332
333#undef __print_hex_str
334#define __print_hex_str(buf, buf_len) \
335 trace_print_hex_seq(p, buf, buf_len, true)
336
337#undef __print_array
338#define __print_array(array, count, el_size) \
339 ({ \
340 BUILD_BUG_ON(el_size != 1 && el_size != 2 && \
341 el_size != 4 && el_size != 8); \
342 trace_print_array_seq(p, array, count, el_size); \
343 })
344
345#undef __print_hex_dump
346#define __print_hex_dump(prefix_str, prefix_type, \
347 rowsize, groupsize, buf, len, ascii) \
348 trace_print_hex_dump_seq(p, prefix_str, prefix_type, \
349 rowsize, groupsize, buf, len, ascii)
350
351#undef DECLARE_EVENT_CLASS
352#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
353static notrace enum print_line_t \
354trace_raw_output_##call(struct trace_iterator *iter, int flags, \
355 struct trace_event *trace_event) \
356{ \
357 struct trace_seq *s = &iter->seq; \
358 struct trace_seq __maybe_unused *p = &iter->tmp_seq; \
359 struct trace_event_raw_##call *field; \
360 int ret; \
361 \
362 field = (typeof(field))iter->ent; \
363 \
364 ret = trace_raw_output_prep(iter, trace_event); \
365 if (ret != TRACE_TYPE_HANDLED) \
366 return ret; \
367 \
368 trace_seq_printf(s, print); \
369 \
370 return trace_handle_return(s); \
371} \
372static struct trace_event_functions trace_event_type_funcs_##call = { \
373 .trace = trace_raw_output_##call, \
374};
375
376#undef DEFINE_EVENT_PRINT
377#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
378static notrace enum print_line_t \
379trace_raw_output_##call(struct trace_iterator *iter, int flags, \
380 struct trace_event *event) \
381{ \
382 struct trace_event_raw_##template *field; \
383 struct trace_entry *entry; \
384 struct trace_seq *p = &iter->tmp_seq; \
385 \
386 entry = iter->ent; \
387 \
388 if (entry->type != event_##call.event.type) { \
389 WARN_ON_ONCE(1); \
390 return TRACE_TYPE_UNHANDLED; \
391 } \
392 \
393 field = (typeof(field))entry; \
394 \
395 trace_seq_init(p); \
396 return trace_output_call(iter, #call, print); \
397} \
398static struct trace_event_functions trace_event_type_funcs_##call = { \
399 .trace = trace_raw_output_##call, \
400};
401
402#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
403
404#undef __field_ext
405#define __field_ext(_type, _item, _filter_type) { \
406 .type = #_type, .name = #_item, \
407 .size = sizeof(_type), .align = __alignof__(_type), \
408 .is_signed = is_signed_type(_type), .filter_type = _filter_type },
409
410#undef __field_struct_ext
411#define __field_struct_ext(_type, _item, _filter_type) { \
412 .type = #_type, .name = #_item, \
413 .size = sizeof(_type), .align = __alignof__(_type), \
414 0, .filter_type = _filter_type },
415
416#undef __field
417#define __field(type, item) __field_ext(type, item, FILTER_OTHER)
418
419#undef __field_struct
420#define __field_struct(type, item) __field_struct_ext(type, item, FILTER_OTHER)
421
422#undef __array
423#define __array(_type, _item, _len) { \
424 .type = #_type"["__stringify(_len)"]", .name = #_item, \
425 .size = sizeof(_type[_len]), .align = __alignof__(_type), \
426 .is_signed = is_signed_type(_type), .filter_type = FILTER_OTHER },
427
428#undef __dynamic_array
429#define __dynamic_array(_type, _item, _len) { \
430 .type = "__data_loc " #_type "[]", .name = #_item, \
431 .size = 4, .align = 4, \
432 .is_signed = is_signed_type(_type), .filter_type = FILTER_OTHER },
433
434#undef __string
435#define __string(item, src) __dynamic_array(char, item, -1)
436
437#undef __bitmask
438#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
439
440#undef DECLARE_EVENT_CLASS
441#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \
442static struct trace_event_fields trace_event_fields_##call[] = { \
443 tstruct \
444 {} };
445
446#undef DEFINE_EVENT
447#define DEFINE_EVENT(template, name, proto, args)
448
449#undef DEFINE_EVENT_PRINT
450#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
451 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
452
453#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
454
455/*
456 * remember the offset of each array from the beginning of the event.
457 */
458
459#undef __entry
460#define __entry entry
461
462#undef __field
463#define __field(type, item)
464
465#undef __field_ext
466#define __field_ext(type, item, filter_type)
467
468#undef __field_struct
469#define __field_struct(type, item)
470
471#undef __field_struct_ext
472#define __field_struct_ext(type, item, filter_type)
473
474#undef __array
475#define __array(type, item, len)
476
477#undef __dynamic_array
478#define __dynamic_array(type, item, len) \
479 __item_length = (len) * sizeof(type); \
480 __data_offsets->item = __data_size + \
481 offsetof(typeof(*entry), __data); \
482 __data_offsets->item |= __item_length << 16; \
483 __data_size += __item_length;
484
485#undef __string
486#define __string(item, src) __dynamic_array(char, item, \
487 strlen((src) ? (const char *)(src) : "(null)") + 1)
488
489/*
490 * __bitmask_size_in_bytes_raw is the number of bytes needed to hold
491 * num_possible_cpus().
492 */
493#define __bitmask_size_in_bytes_raw(nr_bits) \
494 (((nr_bits) + 7) / 8)
495
496#define __bitmask_size_in_longs(nr_bits) \
497 ((__bitmask_size_in_bytes_raw(nr_bits) + \
498 ((BITS_PER_LONG / 8) - 1)) / (BITS_PER_LONG / 8))
499
500/*
501 * __bitmask_size_in_bytes is the number of bytes needed to hold
502 * num_possible_cpus() padded out to the nearest long. This is what
503 * is saved in the buffer, just to be consistent.
504 */
505#define __bitmask_size_in_bytes(nr_bits) \
506 (__bitmask_size_in_longs(nr_bits) * (BITS_PER_LONG / 8))
507
508#undef __bitmask
509#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, \
510 __bitmask_size_in_longs(nr_bits))
511
512#undef DECLARE_EVENT_CLASS
513#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
514static inline notrace int trace_event_get_offsets_##call( \
515 struct trace_event_data_offsets_##call *__data_offsets, proto) \
516{ \
517 int __data_size = 0; \
518 int __maybe_unused __item_length; \
519 struct trace_event_raw_##call __maybe_unused *entry; \
520 \
521 tstruct; \
522 \
523 return __data_size; \
524}
525
526#undef DEFINE_EVENT
527#define DEFINE_EVENT(template, name, proto, args)
528
529#undef DEFINE_EVENT_PRINT
530#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
531 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
532
533#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
534
535/*
536 * Stage 4 of the trace events.
537 *
538 * Override the macros in the event tracepoint header <trace/events/XXX.h>
539 * to include the following:
540 *
541 * For those macros defined with TRACE_EVENT:
542 *
543 * static struct trace_event_call event_<call>;
544 *
545 * static void trace_event_raw_event_<call>(void *__data, proto)
546 * {
547 * struct trace_event_file *trace_file = __data;
548 * struct trace_event_call *event_call = trace_file->event_call;
549 * struct trace_event_data_offsets_<call> __maybe_unused __data_offsets;
550 * unsigned long eflags = trace_file->flags;
551 * enum event_trigger_type __tt = ETT_NONE;
552 * struct ring_buffer_event *event;
553 * struct trace_event_raw_<call> *entry; <-- defined in stage 1
554 * struct trace_buffer *buffer;
555 * unsigned long irq_flags;
556 * int __data_size;
557 * int pc;
558 *
559 * if (!(eflags & EVENT_FILE_FL_TRIGGER_COND)) {
560 * if (eflags & EVENT_FILE_FL_TRIGGER_MODE)
561 * event_triggers_call(trace_file, NULL);
562 * if (eflags & EVENT_FILE_FL_SOFT_DISABLED)
563 * return;
564 * }
565 *
566 * local_save_flags(irq_flags);
567 * pc = preempt_count();
568 *
569 * __data_size = trace_event_get_offsets_<call>(&__data_offsets, args);
570 *
571 * event = trace_event_buffer_lock_reserve(&buffer, trace_file,
572 * event_<call>->event.type,
573 * sizeof(*entry) + __data_size,
574 * irq_flags, pc);
575 * if (!event)
576 * return;
577 * entry = ring_buffer_event_data(event);
578 *
579 * { <assign>; } <-- Here we assign the entries by the __field and
580 * __array macros.
581 *
582 * if (eflags & EVENT_FILE_FL_TRIGGER_COND)
583 * __tt = event_triggers_call(trace_file, entry);
584 *
585 * if (test_bit(EVENT_FILE_FL_SOFT_DISABLED_BIT,
586 * &trace_file->flags))
587 * ring_buffer_discard_commit(buffer, event);
588 * else if (!filter_check_discard(trace_file, entry, buffer, event))
589 * trace_buffer_unlock_commit(buffer, event, irq_flags, pc);
590 *
591 * if (__tt)
592 * event_triggers_post_call(trace_file, __tt);
593 * }
594 *
595 * static struct trace_event ftrace_event_type_<call> = {
596 * .trace = trace_raw_output_<call>, <-- stage 2
597 * };
598 *
599 * static char print_fmt_<call>[] = <TP_printk>;
600 *
601 * static struct trace_event_class __used event_class_<template> = {
602 * .system = "<system>",
603 * .fields_array = trace_event_fields_<call>,
604 * .fields = LIST_HEAD_INIT(event_class_##call.fields),
605 * .raw_init = trace_event_raw_init,
606 * .probe = trace_event_raw_event_##call,
607 * .reg = trace_event_reg,
608 * };
609 *
610 * static struct trace_event_call event_<call> = {
611 * .class = event_class_<template>,
612 * {
613 * .tp = &__tracepoint_<call>,
614 * },
615 * .event = &ftrace_event_type_<call>,
616 * .print_fmt = print_fmt_<call>,
617 * .flags = TRACE_EVENT_FL_TRACEPOINT,
618 * };
619 * // its only safe to use pointers when doing linker tricks to
620 * // create an array.
621 * static struct trace_event_call __used
622 * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>;
623 *
624 */
625
626#ifdef CONFIG_PERF_EVENTS
627
628#define _TRACE_PERF_PROTO(call, proto) \
629 static notrace void \
630 perf_trace_##call(void *__data, proto);
631
632#define _TRACE_PERF_INIT(call) \
633 .perf_probe = perf_trace_##call,
634
635#else
636#define _TRACE_PERF_PROTO(call, proto)
637#define _TRACE_PERF_INIT(call)
638#endif /* CONFIG_PERF_EVENTS */
639
640#undef __entry
641#define __entry entry
642
643#undef __field
644#define __field(type, item)
645
646#undef __field_struct
647#define __field_struct(type, item)
648
649#undef __array
650#define __array(type, item, len)
651
652#undef __dynamic_array
653#define __dynamic_array(type, item, len) \
654 __entry->__data_loc_##item = __data_offsets.item;
655
656#undef __string
657#define __string(item, src) __dynamic_array(char, item, -1)
658
659#undef __assign_str
660#define __assign_str(dst, src) \
661 strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)");
662
663#undef __bitmask
664#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
665
666#undef __get_bitmask
667#define __get_bitmask(field) (char *)__get_dynamic_array(field)
668
669#undef __assign_bitmask
670#define __assign_bitmask(dst, src, nr_bits) \
671 memcpy(__get_bitmask(dst), (src), __bitmask_size_in_bytes(nr_bits))
672
673#undef TP_fast_assign
674#define TP_fast_assign(args...) args
675
676#undef __perf_count
677#define __perf_count(c) (c)
678
679#undef __perf_task
680#define __perf_task(t) (t)
681
682#undef DECLARE_EVENT_CLASS
683#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
684 \
685static notrace void \
686trace_event_raw_event_##call(void *__data, proto) \
687{ \
688 struct trace_event_file *trace_file = __data; \
689 struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\
690 struct trace_event_buffer fbuffer; \
691 struct trace_event_raw_##call *entry; \
692 int __data_size; \
693 \
694 if (trace_trigger_soft_disabled(trace_file)) \
695 return; \
696 \
697 __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \
698 \
699 entry = trace_event_buffer_reserve(&fbuffer, trace_file, \
700 sizeof(*entry) + __data_size); \
701 \
702 if (!entry) \
703 return; \
704 \
705 tstruct \
706 \
707 { assign; } \
708 \
709 trace_event_buffer_commit(&fbuffer); \
710}
711/*
712 * The ftrace_test_probe is compiled out, it is only here as a build time check
713 * to make sure that if the tracepoint handling changes, the ftrace probe will
714 * fail to compile unless it too is updated.
715 */
716
717#undef DEFINE_EVENT
718#define DEFINE_EVENT(template, call, proto, args) \
719static inline void ftrace_test_probe_##call(void) \
720{ \
721 check_trace_callback_type_##call(trace_event_raw_event_##template); \
722}
723
724#undef DEFINE_EVENT_PRINT
725#define DEFINE_EVENT_PRINT(template, name, proto, args, print)
726
727#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
728
729#undef __entry
730#define __entry REC
731
732#undef __print_flags
733#undef __print_symbolic
734#undef __print_hex
735#undef __print_hex_str
736#undef __get_dynamic_array
737#undef __get_dynamic_array_len
738#undef __get_str
739#undef __get_bitmask
740#undef __print_array
741#undef __print_hex_dump
742
743#undef TP_printk
744#define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args)
745
746#undef DECLARE_EVENT_CLASS
747#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
748_TRACE_PERF_PROTO(call, PARAMS(proto)); \
749static char print_fmt_##call[] = print; \
750static struct trace_event_class __used __refdata event_class_##call = { \
751 .system = TRACE_SYSTEM_STRING, \
752 .fields_array = trace_event_fields_##call, \
753 .fields = LIST_HEAD_INIT(event_class_##call.fields),\
754 .raw_init = trace_event_raw_init, \
755 .probe = trace_event_raw_event_##call, \
756 .reg = trace_event_reg, \
757 _TRACE_PERF_INIT(call) \
758};
759
760#undef DEFINE_EVENT
761#define DEFINE_EVENT(template, call, proto, args) \
762 \
763static struct trace_event_call __used event_##call = { \
764 .class = &event_class_##template, \
765 { \
766 .tp = &__tracepoint_##call, \
767 }, \
768 .event.funcs = &trace_event_type_funcs_##template, \
769 .print_fmt = print_fmt_##template, \
770 .flags = TRACE_EVENT_FL_TRACEPOINT, \
771}; \
772static struct trace_event_call __used \
773__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
774
775#undef DEFINE_EVENT_PRINT
776#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
777 \
778static char print_fmt_##call[] = print; \
779 \
780static struct trace_event_call __used event_##call = { \
781 .class = &event_class_##template, \
782 { \
783 .tp = &__tracepoint_##call, \
784 }, \
785 .event.funcs = &trace_event_type_funcs_##call, \
786 .print_fmt = print_fmt_##call, \
787 .flags = TRACE_EVENT_FL_TRACEPOINT, \
788}; \
789static struct trace_event_call __used \
790__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
791
792#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)