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 <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
35TRACE_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) \
345static notrace enum print_line_t \
346trace_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} \
364static 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) \
370static notrace enum print_line_t \
371trace_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} \
390static 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 BUILD_BUG_ON(len <= 0); \
426 ret = trace_define_field(event_call, type_str, #item, \
427 offsetof(typeof(field), item), \
428 sizeof(field.item), \
429 is_signed_type(type), FILTER_OTHER); \
430 if (ret) \
431 return ret; \
432 } while (0);
433
434#undef __dynamic_array
435#define __dynamic_array(type, item, len) \
436 ret = trace_define_field(event_call, "__data_loc " #type "[]", #item, \
437 offsetof(typeof(field), __data_loc_##item), \
438 sizeof(field.__data_loc_##item), \
439 is_signed_type(type), FILTER_OTHER);
440
441#undef __string
442#define __string(item, src) __dynamic_array(char, item, -1)
443
444#undef __bitmask
445#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
446
447#undef DECLARE_EVENT_CLASS
448#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \
449static int notrace __init \
450trace_event_define_fields_##call(struct trace_event_call *event_call) \
451{ \
452 struct trace_event_raw_##call field; \
453 int ret; \
454 \
455 tstruct; \
456 \
457 return ret; \
458}
459
460#undef DEFINE_EVENT
461#define DEFINE_EVENT(template, name, proto, args)
462
463#undef DEFINE_EVENT_PRINT
464#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
465 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
466
467#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
468
469/*
470 * remember the offset of each array from the beginning of the event.
471 */
472
473#undef __entry
474#define __entry entry
475
476#undef __field
477#define __field(type, item)
478
479#undef __field_ext
480#define __field_ext(type, item, filter_type)
481
482#undef __field_struct
483#define __field_struct(type, item)
484
485#undef __field_struct_ext
486#define __field_struct_ext(type, item, filter_type)
487
488#undef __array
489#define __array(type, item, len)
490
491#undef __dynamic_array
492#define __dynamic_array(type, item, len) \
493 __item_length = (len) * sizeof(type); \
494 __data_offsets->item = __data_size + \
495 offsetof(typeof(*entry), __data); \
496 __data_offsets->item |= __item_length << 16; \
497 __data_size += __item_length;
498
499#undef __string
500#define __string(item, src) __dynamic_array(char, item, \
501 strlen((src) ? (const char *)(src) : "(null)") + 1)
502
503/*
504 * __bitmask_size_in_bytes_raw is the number of bytes needed to hold
505 * num_possible_cpus().
506 */
507#define __bitmask_size_in_bytes_raw(nr_bits) \
508 (((nr_bits) + 7) / 8)
509
510#define __bitmask_size_in_longs(nr_bits) \
511 ((__bitmask_size_in_bytes_raw(nr_bits) + \
512 ((BITS_PER_LONG / 8) - 1)) / (BITS_PER_LONG / 8))
513
514/*
515 * __bitmask_size_in_bytes is the number of bytes needed to hold
516 * num_possible_cpus() padded out to the nearest long. This is what
517 * is saved in the buffer, just to be consistent.
518 */
519#define __bitmask_size_in_bytes(nr_bits) \
520 (__bitmask_size_in_longs(nr_bits) * (BITS_PER_LONG / 8))
521
522#undef __bitmask
523#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, \
524 __bitmask_size_in_longs(nr_bits))
525
526#undef DECLARE_EVENT_CLASS
527#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
528static inline notrace int trace_event_get_offsets_##call( \
529 struct trace_event_data_offsets_##call *__data_offsets, proto) \
530{ \
531 int __data_size = 0; \
532 int __maybe_unused __item_length; \
533 struct trace_event_raw_##call __maybe_unused *entry; \
534 \
535 tstruct; \
536 \
537 return __data_size; \
538}
539
540#undef DEFINE_EVENT
541#define DEFINE_EVENT(template, name, proto, args)
542
543#undef DEFINE_EVENT_PRINT
544#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
545 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
546
547#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
548
549/*
550 * Stage 4 of the trace events.
551 *
552 * Override the macros in <trace/trace_events.h> to include the following:
553 *
554 * For those macros defined with TRACE_EVENT:
555 *
556 * static struct trace_event_call event_<call>;
557 *
558 * static void trace_event_raw_event_<call>(void *__data, proto)
559 * {
560 * struct trace_event_file *trace_file = __data;
561 * struct trace_event_call *event_call = trace_file->event_call;
562 * struct trace_event_data_offsets_<call> __maybe_unused __data_offsets;
563 * unsigned long eflags = trace_file->flags;
564 * enum event_trigger_type __tt = ETT_NONE;
565 * struct ring_buffer_event *event;
566 * struct trace_event_raw_<call> *entry; <-- defined in stage 1
567 * struct ring_buffer *buffer;
568 * unsigned long irq_flags;
569 * int __data_size;
570 * int pc;
571 *
572 * if (!(eflags & EVENT_FILE_FL_TRIGGER_COND)) {
573 * if (eflags & EVENT_FILE_FL_TRIGGER_MODE)
574 * event_triggers_call(trace_file, NULL);
575 * if (eflags & EVENT_FILE_FL_SOFT_DISABLED)
576 * return;
577 * }
578 *
579 * local_save_flags(irq_flags);
580 * pc = preempt_count();
581 *
582 * __data_size = trace_event_get_offsets_<call>(&__data_offsets, args);
583 *
584 * event = trace_event_buffer_lock_reserve(&buffer, trace_file,
585 * event_<call>->event.type,
586 * sizeof(*entry) + __data_size,
587 * irq_flags, pc);
588 * if (!event)
589 * return;
590 * entry = ring_buffer_event_data(event);
591 *
592 * { <assign>; } <-- Here we assign the entries by the __field and
593 * __array macros.
594 *
595 * if (eflags & EVENT_FILE_FL_TRIGGER_COND)
596 * __tt = event_triggers_call(trace_file, entry);
597 *
598 * if (test_bit(EVENT_FILE_FL_SOFT_DISABLED_BIT,
599 * &trace_file->flags))
600 * ring_buffer_discard_commit(buffer, event);
601 * else if (!filter_check_discard(trace_file, entry, buffer, event))
602 * trace_buffer_unlock_commit(buffer, event, irq_flags, pc);
603 *
604 * if (__tt)
605 * event_triggers_post_call(trace_file, __tt);
606 * }
607 *
608 * static struct trace_event ftrace_event_type_<call> = {
609 * .trace = trace_raw_output_<call>, <-- stage 2
610 * };
611 *
612 * static char print_fmt_<call>[] = <TP_printk>;
613 *
614 * static struct trace_event_class __used event_class_<template> = {
615 * .system = "<system>",
616 * .define_fields = trace_event_define_fields_<call>,
617 * .fields = LIST_HEAD_INIT(event_class_##call.fields),
618 * .raw_init = trace_event_raw_init,
619 * .probe = trace_event_raw_event_##call,
620 * .reg = trace_event_reg,
621 * };
622 *
623 * static struct trace_event_call event_<call> = {
624 * .class = event_class_<template>,
625 * {
626 * .tp = &__tracepoint_<call>,
627 * },
628 * .event = &ftrace_event_type_<call>,
629 * .print_fmt = print_fmt_<call>,
630 * .flags = TRACE_EVENT_FL_TRACEPOINT,
631 * };
632 * // its only safe to use pointers when doing linker tricks to
633 * // create an array.
634 * static struct trace_event_call __used
635 * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>;
636 *
637 */
638
639#ifdef CONFIG_PERF_EVENTS
640
641#define _TRACE_PERF_PROTO(call, proto) \
642 static notrace void \
643 perf_trace_##call(void *__data, proto);
644
645#define _TRACE_PERF_INIT(call) \
646 .perf_probe = perf_trace_##call,
647
648#else
649#define _TRACE_PERF_PROTO(call, proto)
650#define _TRACE_PERF_INIT(call)
651#endif /* CONFIG_PERF_EVENTS */
652
653#undef __entry
654#define __entry entry
655
656#undef __field
657#define __field(type, item)
658
659#undef __field_struct
660#define __field_struct(type, item)
661
662#undef __array
663#define __array(type, item, len)
664
665#undef __dynamic_array
666#define __dynamic_array(type, item, len) \
667 __entry->__data_loc_##item = __data_offsets.item;
668
669#undef __string
670#define __string(item, src) __dynamic_array(char, item, -1)
671
672#undef __assign_str
673#define __assign_str(dst, src) \
674 strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)");
675
676#undef __bitmask
677#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
678
679#undef __get_bitmask
680#define __get_bitmask(field) (char *)__get_dynamic_array(field)
681
682#undef __assign_bitmask
683#define __assign_bitmask(dst, src, nr_bits) \
684 memcpy(__get_bitmask(dst), (src), __bitmask_size_in_bytes(nr_bits))
685
686#undef TP_fast_assign
687#define TP_fast_assign(args...) args
688
689#undef __perf_count
690#define __perf_count(c) (c)
691
692#undef __perf_task
693#define __perf_task(t) (t)
694
695#undef DECLARE_EVENT_CLASS
696#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
697 \
698static notrace void \
699trace_event_raw_event_##call(void *__data, proto) \
700{ \
701 struct trace_event_file *trace_file = __data; \
702 struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\
703 struct trace_event_buffer fbuffer; \
704 struct trace_event_raw_##call *entry; \
705 int __data_size; \
706 \
707 if (trace_trigger_soft_disabled(trace_file)) \
708 return; \
709 \
710 __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \
711 \
712 entry = trace_event_buffer_reserve(&fbuffer, trace_file, \
713 sizeof(*entry) + __data_size); \
714 \
715 if (!entry) \
716 return; \
717 \
718 tstruct \
719 \
720 { assign; } \
721 \
722 trace_event_buffer_commit(&fbuffer); \
723}
724/*
725 * The ftrace_test_probe is compiled out, it is only here as a build time check
726 * to make sure that if the tracepoint handling changes, the ftrace probe will
727 * fail to compile unless it too is updated.
728 */
729
730#undef DEFINE_EVENT
731#define DEFINE_EVENT(template, call, proto, args) \
732static inline void ftrace_test_probe_##call(void) \
733{ \
734 check_trace_callback_type_##call(trace_event_raw_event_##template); \
735}
736
737#undef DEFINE_EVENT_PRINT
738#define DEFINE_EVENT_PRINT(template, name, proto, args, print)
739
740#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
741
742#undef __entry
743#define __entry REC
744
745#undef __print_flags
746#undef __print_symbolic
747#undef __print_hex
748#undef __print_hex_str
749#undef __get_dynamic_array
750#undef __get_dynamic_array_len
751#undef __get_str
752#undef __get_bitmask
753#undef __print_array
754
755#undef TP_printk
756#define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args)
757
758#undef DECLARE_EVENT_CLASS
759#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
760_TRACE_PERF_PROTO(call, PARAMS(proto)); \
761static char print_fmt_##call[] = print; \
762static struct trace_event_class __used __refdata event_class_##call = { \
763 .system = TRACE_SYSTEM_STRING, \
764 .define_fields = trace_event_define_fields_##call, \
765 .fields = LIST_HEAD_INIT(event_class_##call.fields),\
766 .raw_init = trace_event_raw_init, \
767 .probe = trace_event_raw_event_##call, \
768 .reg = trace_event_reg, \
769 _TRACE_PERF_INIT(call) \
770};
771
772#undef DEFINE_EVENT
773#define DEFINE_EVENT(template, call, proto, args) \
774 \
775static struct trace_event_call __used event_##call = { \
776 .class = &event_class_##template, \
777 { \
778 .tp = &__tracepoint_##call, \
779 }, \
780 .event.funcs = &trace_event_type_funcs_##template, \
781 .print_fmt = print_fmt_##template, \
782 .flags = TRACE_EVENT_FL_TRACEPOINT, \
783}; \
784static struct trace_event_call __used \
785__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
786
787#undef DEFINE_EVENT_PRINT
788#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
789 \
790static char print_fmt_##call[] = print; \
791 \
792static struct trace_event_call __used event_##call = { \
793 .class = &event_class_##template, \
794 { \
795 .tp = &__tracepoint_##call, \
796 }, \
797 .event.funcs = &trace_event_type_funcs_##call, \
798 .print_fmt = print_fmt_##call, \
799 .flags = TRACE_EVENT_FL_TRACEPOINT, \
800}; \
801static struct trace_event_call __used \
802__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
803
804#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)