Commit | Line | Data |
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40652b65 | 1 | #include <lttng.h> |
299338c8 | 2 | #include <lttng-types.h> |
40652b65 MD |
3 | |
4 | /* | |
5 | * Macros mapping tp_assign() to "=", tp_memcpy() to memcpy() and tp_strcpy() to | |
6 | * strcpy(). | |
7 | */ | |
1d12cebd | 8 | #undef tp_assign |
40652b65 MD |
9 | #define tp_assign(dest, src) \ |
10 | lib_ring_buffer_align_ctx(config, &ctx, sizeof(src)); \ | |
11 | lib_ring_buffer_write(config, &ctx, &src, sizeof(src)); | |
12 | ||
1d12cebd | 13 | #undef tp_memcpy |
40652b65 MD |
14 | #define tp_memcpy(dest, src, len) \ |
15 | lib_ring_buffer_align_ctx(config, &ctx, sizeof(*(src))); \ | |
16 | lib_ring_buffer_write(config, &ctx, &src, len); | |
17 | ||
18 | /* TODO */ | |
1d12cebd | 19 | #undef tp_strcpy |
299338c8 MD |
20 | #define tp_strcpy(dest, src) __assign_str(dest, src); |
21 | ||
22 | struct lttng_event_field { | |
23 | const char *name; | |
24 | const struct lttng_type type; | |
25 | }; | |
26 | ||
27 | struct lttng_event_desc { | |
28 | const struct lttng_event_field *fields; | |
29 | }; | |
40652b65 MD |
30 | |
31 | /* | |
32 | * Stage 1 of the trace events. | |
33 | * | |
34 | * Create event field type metadata section. | |
299338c8 | 35 | * Each event produce an array of fields. |
40652b65 MD |
36 | */ |
37 | ||
38 | /* | |
39 | * DECLARE_EVENT_CLASS can be used to add a generic function | |
40 | * handlers for events. That is, if all events have the same | |
41 | * parameters and just have distinct trace points. | |
42 | * Each tracepoint can be defined with DEFINE_EVENT and that | |
43 | * will map the DECLARE_EVENT_CLASS to the tracepoint. | |
44 | * | |
45 | * TRACE_EVENT is a one to one mapping between tracepoint and template. | |
46 | */ | |
47 | #undef TRACE_EVENT | |
48 | #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \ | |
49 | DECLARE_EVENT_CLASS(name, \ | |
50 | PARAMS(proto), \ | |
51 | PARAMS(args), \ | |
52 | PARAMS(tstruct), \ | |
53 | PARAMS(assign), \ | |
299338c8 MD |
54 | PARAMS(print)) \ |
55 | DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args)) | |
40652b65 | 56 | |
1d12cebd MD |
57 | /* Named field types must be defined in lttng-types.h */ |
58 | ||
40652b65 | 59 | #undef __field |
299338c8 MD |
60 | #define __field(_type, _item) \ |
61 | { .name = #_item, .type = { .atype = atype_integer, .name = #_type} }, | |
40652b65 MD |
62 | |
63 | #undef __field_ext | |
299338c8 MD |
64 | #define __field_ext(_type, _item, _filter_type) \ |
65 | { .name = #_item, .type = { .atype = atype_integer, .name = #_type} }, | |
40652b65 MD |
66 | |
67 | #undef __array | |
299338c8 MD |
68 | #define __array(_type, _item, _length) \ |
69 | { \ | |
70 | .name = #_item, \ | |
71 | .type = { \ | |
72 | .atype = atype_array, \ | |
73 | .name = NULL, \ | |
74 | .u.array.elem_type = #_type, \ | |
75 | .u.array.length = _length, \ | |
76 | }, \ | |
77 | }, | |
40652b65 MD |
78 | |
79 | #undef __dynamic_array | |
299338c8 MD |
80 | #define __dynamic_array(_type, _item, _length) \ |
81 | { \ | |
82 | .name = #_item, \ | |
83 | .type = { \ | |
84 | .atype = atype_sequence, \ | |
85 | .name = NULL, \ | |
86 | .u.sequence.elem_type = #_type, \ | |
87 | .u.sequence.length_type = "u32", \ | |
88 | }, \ | |
89 | }, | |
40652b65 MD |
90 | |
91 | #undef __string | |
1d12cebd | 92 | #define __string(_item, _src) \ |
299338c8 MD |
93 | { \ |
94 | .name = _item, \ | |
95 | .type = { \ | |
96 | .atype = atype_string, \ | |
97 | .name = NULL, \ | |
98 | .u.string.encoding = lttng_encode_UTF8, \ | |
99 | }, \ | |
100 | }, | |
1d12cebd MD |
101 | |
102 | #undef TP_PROTO | |
103 | #define TP_PROTO(args...) | |
104 | ||
105 | #undef TP_ARGS | |
106 | #define TP_ARGS(args...) | |
40652b65 MD |
107 | |
108 | #undef TP_STRUCT__entry | |
1d12cebd MD |
109 | #define TP_STRUCT__entry(args...) args /* Only one used in this phase */ |
110 | ||
111 | #undef TP_fast_assign | |
112 | #define TP_fast_assign(args...) | |
113 | ||
114 | #undef TP_printk | |
115 | #define TP_printk(args...) | |
40652b65 MD |
116 | |
117 | #undef DECLARE_EVENT_CLASS | |
118 | #define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \ | |
299338c8 MD |
119 | static const struct lttng_event_field __event_fields___##name[] = { \ |
120 | tstruct \ | |
121 | }; | |
122 | ||
123 | #undef DEFINE_EVENT | |
124 | #define DEFINE_EVENT(template, name, proto, args) | |
125 | ||
126 | #undef DEFINE_EVENT_PRINT | |
127 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ | |
128 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) | |
129 | ||
130 | /* Callbacks are meaningless to LTTng. */ | |
131 | #undef TRACE_EVENT_FN | |
132 | #define TRACE_EVENT_FN(name, proto, args, tstruct, \ | |
133 | assign, print, reg, unreg) \ | |
134 | TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \ | |
135 | PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ | |
136 | ||
137 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
138 | ||
139 | /* | |
140 | * Stage 2 of the trace events. | |
141 | * | |
142 | * Create an array of events. | |
143 | */ | |
144 | ||
145 | /* | |
146 | * DECLARE_EVENT_CLASS can be used to add a generic function | |
147 | * handlers for events. That is, if all events have the same | |
148 | * parameters and just have distinct trace points. | |
149 | * Each tracepoint can be defined with DEFINE_EVENT and that | |
150 | * will map the DECLARE_EVENT_CLASS to the tracepoint. | |
151 | * | |
152 | * TRACE_EVENT is a one to one mapping between tracepoint and template. | |
153 | */ | |
154 | #undef TRACE_EVENT | |
155 | #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \ | |
156 | DECLARE_EVENT_CLASS(name, \ | |
157 | PARAMS(proto), \ | |
158 | PARAMS(args), \ | |
159 | PARAMS(tstruct), \ | |
160 | PARAMS(assign), \ | |
161 | PARAMS(print)) \ | |
162 | DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args)) | |
163 | ||
164 | /* Named field types must be defined in lttng-types.h */ | |
165 | ||
166 | #undef __field | |
167 | #define __field(_type, _item) | |
168 | ||
169 | #undef __field_ext | |
170 | #define __field_ext(_type, _item, _filter_type) | |
171 | ||
172 | #undef __array | |
173 | #define __array(_type, _item, _length) | |
174 | ||
175 | #undef __dynamic_array | |
176 | #define __dynamic_array(_type, _item, _length) | |
177 | ||
178 | #undef __string | |
179 | #define __string(_item, _src) | |
180 | ||
181 | #undef TP_PROTO | |
182 | #define TP_PROTO(args...) | |
183 | ||
184 | #undef TP_ARGS | |
185 | #define TP_ARGS(args...) | |
186 | ||
187 | #undef TP_STRUCT__entry | |
188 | #define TP_STRUCT__entry(args...) | |
189 | ||
190 | #undef TP_fast_assign | |
191 | #define TP_fast_assign(args...) | |
192 | ||
193 | #undef TP_printk | |
194 | #define TP_printk(args...) | |
195 | ||
196 | #undef DECLARE_EVENT_CLASS | |
197 | #define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \ | |
198 | { .fields = __event_fields___##name }, | |
40652b65 MD |
199 | |
200 | #undef DEFINE_EVENT | |
1d12cebd | 201 | #define DEFINE_EVENT(template, name, proto, args) |
40652b65 MD |
202 | |
203 | #undef DEFINE_EVENT_PRINT | |
204 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ | |
205 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) | |
206 | ||
1d12cebd | 207 | /* Callbacks are meaningless to LTTng. */ |
40652b65 MD |
208 | #undef TRACE_EVENT_FN |
209 | #define TRACE_EVENT_FN(name, proto, args, tstruct, \ | |
210 | assign, print, reg, unreg) \ | |
211 | TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \ | |
212 | PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ | |
213 | ||
299338c8 MD |
214 | #define TRACE_EVENT_DESC_1(_system) __event_desc___##_system |
215 | #define TRACE_EVENT_DESC(_system) TRACE_EVENT_DESC_1(_system) | |
40652b65 | 216 | |
299338c8 | 217 | static const struct lttng_event_desc TRACE_EVENT_DESC(TRACE_SYSTEM)[] = { |
40652b65 | 218 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
299338c8 MD |
219 | }; |
220 | ||
221 | #undef TRACE_EVENT_DESC_1 | |
222 | #undef TRACE_EVENT_DESC | |
1d12cebd MD |
223 | |
224 | #if 0 | |
40652b65 MD |
225 | |
226 | /* | |
299338c8 | 227 | * Stage 3 of the trace events. |
40652b65 MD |
228 | * |
229 | * Create static inline function that calculates event size. | |
230 | */ | |
231 | ||
232 | ||
233 | ||
234 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
235 | ||
236 | /* | |
299338c8 | 237 | * Stage 4 of the trace events. |
40652b65 MD |
238 | * |
239 | * Create the probe function : call even size calculation and write event data | |
240 | * into the buffer. | |
241 | */ | |
242 | ||
243 | ||
244 | ||
245 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
246 | ||
247 | ||
248 | ||
249 | ||
250 | #include <linux/ftrace_event.h> | |
251 | ||
252 | /* | |
253 | * DECLARE_EVENT_CLASS can be used to add a generic function | |
254 | * handlers for events. That is, if all events have the same | |
255 | * parameters and just have distinct trace points. | |
256 | * Each tracepoint can be defined with DEFINE_EVENT and that | |
257 | * will map the DECLARE_EVENT_CLASS to the tracepoint. | |
258 | * | |
259 | * TRACE_EVENT is a one to one mapping between tracepoint and template. | |
260 | */ | |
261 | #undef TRACE_EVENT | |
262 | #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \ | |
263 | DECLARE_EVENT_CLASS(name, \ | |
264 | PARAMS(proto), \ | |
265 | PARAMS(args), \ | |
266 | PARAMS(tstruct), \ | |
267 | PARAMS(assign), \ | |
268 | PARAMS(print)); \ | |
269 | DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args)); | |
270 | ||
271 | ||
272 | #undef __field | |
273 | #define __field(type, item) type item; | |
274 | ||
275 | #undef __field_ext | |
276 | #define __field_ext(type, item, filter_type) type item; | |
277 | ||
278 | #undef __array | |
279 | #define __array(type, item, len) type item[len]; | |
280 | ||
281 | #undef __dynamic_array | |
282 | #define __dynamic_array(type, item, len) u32 __data_loc_##item; | |
283 | ||
284 | #undef __string | |
285 | #define __string(item, src) __dynamic_array(char, item, -1) | |
286 | ||
287 | #undef TP_STRUCT__entry | |
288 | #define TP_STRUCT__entry(args...) args | |
289 | ||
290 | #undef DECLARE_EVENT_CLASS | |
291 | #define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \ | |
292 | struct ftrace_raw_##name { \ | |
293 | struct trace_entry ent; \ | |
294 | tstruct \ | |
295 | char __data[0]; \ | |
296 | }; \ | |
297 | \ | |
298 | static struct ftrace_event_class event_class_##name; | |
299 | ||
300 | #undef DEFINE_EVENT | |
301 | #define DEFINE_EVENT(template, name, proto, args) \ | |
302 | static struct ftrace_event_call __used \ | |
303 | __attribute__((__aligned__(4))) event_##name | |
304 | ||
305 | #undef DEFINE_EVENT_PRINT | |
306 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ | |
307 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) | |
308 | ||
309 | /* Callbacks are meaningless to ftrace. */ | |
310 | #undef TRACE_EVENT_FN | |
311 | #define TRACE_EVENT_FN(name, proto, args, tstruct, \ | |
312 | assign, print, reg, unreg) \ | |
313 | TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \ | |
314 | PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ | |
315 | ||
316 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
317 | ||
318 | ||
319 | /* | |
320 | * Stage 2 of the trace events. | |
321 | * | |
322 | * Create static inline function that calculates event size. | |
323 | */ | |
324 | ||
325 | #undef __field | |
326 | #define __field(type, item) | |
327 | ||
328 | #undef __field_ext | |
329 | #define __field_ext(type, item, filter_type) | |
330 | ||
331 | #undef __array | |
332 | #define __array(type, item, len) | |
333 | ||
334 | #undef __dynamic_array | |
335 | #define __dynamic_array(type, item, len) u32 item; | |
336 | ||
337 | #undef __string | |
338 | #define __string(item, src) __dynamic_array(char, item, -1) | |
339 | ||
340 | #undef DECLARE_EVENT_CLASS | |
341 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ | |
342 | struct ftrace_data_offsets_##call { \ | |
343 | tstruct; \ | |
344 | }; | |
345 | ||
346 | #undef DEFINE_EVENT | |
347 | #define DEFINE_EVENT(template, name, proto, args) | |
348 | ||
349 | #undef DEFINE_EVENT_PRINT | |
350 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ | |
351 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) | |
352 | ||
353 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
354 | ||
355 | /* | |
356 | * Stage 3 of the trace events. | |
357 | * | |
358 | * Create the probe function : call even size calculation and write event data | |
359 | * into the buffer. | |
360 | */ | |
361 | ||
362 | #undef __entry | |
363 | #define __entry field | |
364 | ||
365 | #undef TP_printk | |
366 | #define TP_printk(fmt, args...) fmt "\n", args | |
367 | ||
368 | #undef __get_dynamic_array | |
369 | #define __get_dynamic_array(field) \ | |
370 | ((void *)__entry + (__entry->__data_loc_##field & 0xffff)) | |
371 | ||
372 | #undef __get_str | |
373 | #define __get_str(field) (char *)__get_dynamic_array(field) | |
374 | ||
375 | #undef __print_flags | |
376 | #define __print_flags(flag, delim, flag_array...) \ | |
377 | ({ \ | |
378 | static const struct trace_print_flags __flags[] = \ | |
379 | { flag_array, { -1, NULL }}; \ | |
380 | ftrace_print_flags_seq(p, delim, flag, __flags); \ | |
381 | }) | |
382 | ||
383 | #undef __print_symbolic | |
384 | #define __print_symbolic(value, symbol_array...) \ | |
385 | ({ \ | |
386 | static const struct trace_print_flags symbols[] = \ | |
387 | { symbol_array, { -1, NULL }}; \ | |
388 | ftrace_print_symbols_seq(p, value, symbols); \ | |
389 | }) | |
390 | ||
391 | #undef __print_hex | |
392 | #define __print_hex(buf, buf_len) ftrace_print_hex_seq(p, buf, buf_len) | |
393 | ||
394 | #undef DECLARE_EVENT_CLASS | |
395 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ | |
396 | static notrace enum print_line_t \ | |
397 | ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \ | |
398 | struct trace_event *trace_event) \ | |
399 | { \ | |
400 | struct ftrace_event_call *event; \ | |
401 | struct trace_seq *s = &iter->seq; \ | |
402 | struct ftrace_raw_##call *field; \ | |
403 | struct trace_entry *entry; \ | |
404 | struct trace_seq *p = &iter->tmp_seq; \ | |
405 | int ret; \ | |
406 | \ | |
407 | event = container_of(trace_event, struct ftrace_event_call, \ | |
408 | event); \ | |
409 | \ | |
410 | entry = iter->ent; \ | |
411 | \ | |
412 | if (entry->type != event->event.type) { \ | |
413 | WARN_ON_ONCE(1); \ | |
414 | return TRACE_TYPE_UNHANDLED; \ | |
415 | } \ | |
416 | \ | |
417 | field = (typeof(field))entry; \ | |
418 | \ | |
419 | trace_seq_init(p); \ | |
420 | ret = trace_seq_printf(s, "%s: ", event->name); \ | |
421 | if (ret) \ | |
422 | ret = trace_seq_printf(s, print); \ | |
423 | if (!ret) \ | |
424 | return TRACE_TYPE_PARTIAL_LINE; \ | |
425 | \ | |
426 | return TRACE_TYPE_HANDLED; \ | |
427 | } \ | |
428 | static struct trace_event_functions ftrace_event_type_funcs_##call = { \ | |
429 | .trace = ftrace_raw_output_##call, \ | |
430 | }; | |
431 | ||
432 | #undef DEFINE_EVENT_PRINT | |
433 | #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ | |
434 | static notrace enum print_line_t \ | |
435 | ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \ | |
436 | struct trace_event *event) \ | |
437 | { \ | |
438 | struct trace_seq *s = &iter->seq; \ | |
439 | struct ftrace_raw_##template *field; \ | |
440 | struct trace_entry *entry; \ | |
441 | struct trace_seq *p = &iter->tmp_seq; \ | |
442 | int ret; \ | |
443 | \ | |
444 | entry = iter->ent; \ | |
445 | \ | |
446 | if (entry->type != event_##call.event.type) { \ | |
447 | WARN_ON_ONCE(1); \ | |
448 | return TRACE_TYPE_UNHANDLED; \ | |
449 | } \ | |
450 | \ | |
451 | field = (typeof(field))entry; \ | |
452 | \ | |
453 | trace_seq_init(p); \ | |
454 | ret = trace_seq_printf(s, "%s: ", #call); \ | |
455 | if (ret) \ | |
456 | ret = trace_seq_printf(s, print); \ | |
457 | if (!ret) \ | |
458 | return TRACE_TYPE_PARTIAL_LINE; \ | |
459 | \ | |
460 | return TRACE_TYPE_HANDLED; \ | |
461 | } \ | |
462 | static struct trace_event_functions ftrace_event_type_funcs_##call = { \ | |
463 | .trace = ftrace_raw_output_##call, \ | |
464 | }; | |
465 | ||
466 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
467 | ||
468 | #undef __field_ext | |
469 | #define __field_ext(type, item, filter_type) \ | |
470 | ret = trace_define_field(event_call, #type, #item, \ | |
471 | offsetof(typeof(field), item), \ | |
472 | sizeof(field.item), \ | |
473 | is_signed_type(type), filter_type); \ | |
474 | if (ret) \ | |
475 | return ret; | |
476 | ||
477 | #undef __field | |
478 | #define __field(type, item) __field_ext(type, item, FILTER_OTHER) | |
479 | ||
480 | #undef __array | |
481 | #define __array(type, item, len) \ | |
482 | BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \ | |
483 | ret = trace_define_field(event_call, #type "[" #len "]", #item, \ | |
484 | offsetof(typeof(field), item), \ | |
485 | sizeof(field.item), \ | |
486 | is_signed_type(type), FILTER_OTHER); \ | |
487 | if (ret) \ | |
488 | return ret; | |
489 | ||
490 | #undef __dynamic_array | |
491 | #define __dynamic_array(type, item, len) \ | |
492 | ret = trace_define_field(event_call, "__data_loc " #type "[]", #item, \ | |
493 | offsetof(typeof(field), __data_loc_##item), \ | |
494 | sizeof(field.__data_loc_##item), \ | |
495 | is_signed_type(type), FILTER_OTHER); | |
496 | ||
497 | #undef __string | |
498 | #define __string(item, src) __dynamic_array(char, item, -1) | |
499 | ||
500 | #undef DECLARE_EVENT_CLASS | |
501 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \ | |
502 | static int notrace \ | |
503 | ftrace_define_fields_##call(struct ftrace_event_call *event_call) \ | |
504 | { \ | |
505 | struct ftrace_raw_##call field; \ | |
506 | int ret; \ | |
507 | \ | |
508 | tstruct; \ | |
509 | \ | |
510 | return ret; \ | |
511 | } | |
512 | ||
513 | #undef DEFINE_EVENT | |
514 | #define DEFINE_EVENT(template, name, proto, args) | |
515 | ||
516 | #undef DEFINE_EVENT_PRINT | |
517 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ | |
518 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) | |
519 | ||
520 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
521 | ||
522 | /* | |
523 | * remember the offset of each array from the beginning of the event. | |
524 | */ | |
525 | ||
526 | #undef __entry | |
527 | #define __entry entry | |
528 | ||
529 | #undef __field | |
530 | #define __field(type, item) | |
531 | ||
532 | #undef __field_ext | |
533 | #define __field_ext(type, item, filter_type) | |
534 | ||
535 | #undef __array | |
536 | #define __array(type, item, len) | |
537 | ||
538 | #undef __dynamic_array | |
539 | #define __dynamic_array(type, item, len) \ | |
540 | __data_offsets->item = __data_size + \ | |
541 | offsetof(typeof(*entry), __data); \ | |
542 | __data_offsets->item |= (len * sizeof(type)) << 16; \ | |
543 | __data_size += (len) * sizeof(type); | |
544 | ||
545 | #undef __string | |
546 | #define __string(item, src) __dynamic_array(char, item, strlen(src) + 1) | |
547 | ||
548 | #undef DECLARE_EVENT_CLASS | |
549 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ | |
550 | static inline notrace int ftrace_get_offsets_##call( \ | |
551 | struct ftrace_data_offsets_##call *__data_offsets, proto) \ | |
552 | { \ | |
553 | int __data_size = 0; \ | |
554 | struct ftrace_raw_##call __maybe_unused *entry; \ | |
555 | \ | |
556 | tstruct; \ | |
557 | \ | |
558 | return __data_size; \ | |
559 | } | |
560 | ||
561 | #undef DEFINE_EVENT | |
562 | #define DEFINE_EVENT(template, name, proto, args) | |
563 | ||
564 | #undef DEFINE_EVENT_PRINT | |
565 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ | |
566 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) | |
567 | ||
568 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
569 | ||
570 | /* | |
571 | * Stage 4 of the trace events. | |
572 | * | |
573 | * Override the macros in <trace/trace_events.h> to include the following: | |
574 | * | |
575 | * For those macros defined with TRACE_EVENT: | |
576 | * | |
577 | * static struct ftrace_event_call event_<call>; | |
578 | * | |
579 | * static void ftrace_raw_event_<call>(void *__data, proto) | |
580 | * { | |
581 | * struct ftrace_event_call *event_call = __data; | |
582 | * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets; | |
583 | * struct ring_buffer_event *event; | |
584 | * struct ftrace_raw_<call> *entry; <-- defined in stage 1 | |
585 | * struct ring_buffer *buffer; | |
586 | * unsigned long irq_flags; | |
587 | * int __data_size; | |
588 | * int pc; | |
589 | * | |
590 | * local_save_flags(irq_flags); | |
591 | * pc = preempt_count(); | |
592 | * | |
593 | * __data_size = ftrace_get_offsets_<call>(&__data_offsets, args); | |
594 | * | |
595 | * event = trace_current_buffer_lock_reserve(&buffer, | |
596 | * event_<call>->event.type, | |
597 | * sizeof(*entry) + __data_size, | |
598 | * irq_flags, pc); | |
599 | * if (!event) | |
600 | * return; | |
601 | * entry = ring_buffer_event_data(event); | |
602 | * | |
603 | * { <assign>; } <-- Here we assign the entries by the __field and | |
604 | * __array macros. | |
605 | * | |
606 | * if (!filter_current_check_discard(buffer, event_call, entry, event)) | |
607 | * trace_current_buffer_unlock_commit(buffer, | |
608 | * event, irq_flags, pc); | |
609 | * } | |
610 | * | |
611 | * static struct trace_event ftrace_event_type_<call> = { | |
612 | * .trace = ftrace_raw_output_<call>, <-- stage 2 | |
613 | * }; | |
614 | * | |
615 | * static const char print_fmt_<call>[] = <TP_printk>; | |
616 | * | |
617 | * static struct ftrace_event_class __used event_class_<template> = { | |
618 | * .system = "<system>", | |
619 | * .define_fields = ftrace_define_fields_<call>, | |
620 | * .fields = LIST_HEAD_INIT(event_class_##call.fields), | |
621 | * .raw_init = trace_event_raw_init, | |
622 | * .probe = ftrace_raw_event_##call, | |
623 | * .reg = ftrace_event_reg, | |
624 | * }; | |
625 | * | |
626 | * static struct ftrace_event_call __used | |
627 | * __attribute__((__aligned__(4))) | |
628 | * __attribute__((section("_ftrace_events"))) event_<call> = { | |
629 | * .name = "<call>", | |
630 | * .class = event_class_<template>, | |
631 | * .event = &ftrace_event_type_<call>, | |
632 | * .print_fmt = print_fmt_<call>, | |
633 | * }; | |
634 | * | |
635 | */ | |
636 | ||
637 | #ifdef CONFIG_PERF_EVENTS | |
638 | ||
639 | #define _TRACE_PERF_PROTO(call, proto) \ | |
640 | static notrace void \ | |
641 | perf_trace_##call(void *__data, proto); | |
642 | ||
643 | #define _TRACE_PERF_INIT(call) \ | |
644 | .perf_probe = perf_trace_##call, | |
645 | ||
646 | #else | |
647 | #define _TRACE_PERF_PROTO(call, proto) | |
648 | #define _TRACE_PERF_INIT(call) | |
649 | #endif /* CONFIG_PERF_EVENTS */ | |
650 | ||
651 | #undef __entry | |
652 | #define __entry entry | |
653 | ||
654 | #undef __field | |
655 | #define __field(type, item) | |
656 | ||
657 | #undef __array | |
658 | #define __array(type, item, len) | |
659 | ||
660 | #undef __dynamic_array | |
661 | #define __dynamic_array(type, item, len) \ | |
662 | __entry->__data_loc_##item = __data_offsets.item; | |
663 | ||
664 | #undef __string | |
665 | #define __string(item, src) __dynamic_array(char, item, -1) \ | |
666 | ||
667 | #undef __assign_str | |
668 | #define __assign_str(dst, src) \ | |
669 | strcpy(__get_str(dst), src); | |
670 | ||
671 | #undef TP_fast_assign | |
672 | #define TP_fast_assign(args...) args | |
673 | ||
674 | #undef TP_perf_assign | |
675 | #define TP_perf_assign(args...) | |
676 | ||
677 | #undef DECLARE_EVENT_CLASS | |
678 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ | |
679 | \ | |
680 | static notrace void \ | |
681 | ftrace_raw_event_##call(void *__data, proto) \ | |
682 | { \ | |
683 | struct ftrace_event_call *event_call = __data; \ | |
684 | struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\ | |
685 | struct ring_buffer_event *event; \ | |
686 | struct ftrace_raw_##call *entry; \ | |
687 | struct ring_buffer *buffer; \ | |
688 | unsigned long irq_flags; \ | |
689 | int __data_size; \ | |
690 | int pc; \ | |
691 | \ | |
692 | local_save_flags(irq_flags); \ | |
693 | pc = preempt_count(); \ | |
694 | \ | |
695 | __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \ | |
696 | \ | |
697 | event = trace_current_buffer_lock_reserve(&buffer, \ | |
698 | event_call->event.type, \ | |
699 | sizeof(*entry) + __data_size, \ | |
700 | irq_flags, pc); \ | |
701 | if (!event) \ | |
702 | return; \ | |
703 | entry = ring_buffer_event_data(event); \ | |
704 | \ | |
705 | tstruct \ | |
706 | \ | |
707 | { assign; } \ | |
708 | \ | |
709 | if (!filter_current_check_discard(buffer, event_call, entry, event)) \ | |
710 | trace_nowake_buffer_unlock_commit(buffer, \ | |
711 | event, irq_flags, pc); \ | |
712 | } | |
713 | /* | |
714 | * The ftrace_test_probe is compiled out, it is only here as a build time check | |
715 | * to make sure that if the tracepoint handling changes, the ftrace probe will | |
716 | * fail to compile unless it too is updated. | |
717 | */ | |
718 | ||
719 | #undef DEFINE_EVENT | |
720 | #define DEFINE_EVENT(template, call, proto, args) \ | |
721 | static inline void ftrace_test_probe_##call(void) \ | |
722 | { \ | |
723 | check_trace_callback_type_##call(ftrace_raw_event_##template); \ | |
724 | } | |
725 | ||
726 | #undef DEFINE_EVENT_PRINT | |
727 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) | |
728 | ||
729 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
730 | ||
731 | #undef __entry | |
732 | #define __entry REC | |
733 | ||
734 | #undef __print_flags | |
735 | #undef __print_symbolic | |
736 | #undef __get_dynamic_array | |
737 | #undef __get_str | |
738 | ||
739 | #undef TP_printk | |
740 | #define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args) | |
741 | ||
742 | #undef DECLARE_EVENT_CLASS | |
743 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ | |
744 | _TRACE_PERF_PROTO(call, PARAMS(proto)); \ | |
745 | static const char print_fmt_##call[] = print; \ | |
746 | static struct ftrace_event_class __used event_class_##call = { \ | |
747 | .system = __stringify(TRACE_SYSTEM), \ | |
748 | .define_fields = ftrace_define_fields_##call, \ | |
749 | .fields = LIST_HEAD_INIT(event_class_##call.fields),\ | |
750 | .raw_init = trace_event_raw_init, \ | |
751 | .probe = ftrace_raw_event_##call, \ | |
752 | .reg = ftrace_event_reg, \ | |
753 | _TRACE_PERF_INIT(call) \ | |
754 | }; | |
755 | ||
756 | #undef DEFINE_EVENT | |
757 | #define DEFINE_EVENT(template, call, proto, args) \ | |
758 | \ | |
759 | static struct ftrace_event_call __used \ | |
760 | __attribute__((__aligned__(4))) \ | |
761 | __attribute__((section("_ftrace_events"))) event_##call = { \ | |
762 | .name = #call, \ | |
763 | .class = &event_class_##template, \ | |
764 | .event.funcs = &ftrace_event_type_funcs_##template, \ | |
765 | .print_fmt = print_fmt_##template, \ | |
766 | }; | |
767 | ||
768 | #undef DEFINE_EVENT_PRINT | |
769 | #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ | |
770 | \ | |
771 | static const char print_fmt_##call[] = print; \ | |
772 | \ | |
773 | static struct ftrace_event_call __used \ | |
774 | __attribute__((__aligned__(4))) \ | |
775 | __attribute__((section("_ftrace_events"))) event_##call = { \ | |
776 | .name = #call, \ | |
777 | .class = &event_class_##template, \ | |
778 | .event.funcs = &ftrace_event_type_funcs_##call, \ | |
779 | .print_fmt = print_fmt_##call, \ | |
780 | } | |
781 | ||
782 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
783 | ||
784 | /* | |
785 | * Define the insertion callback to perf events | |
786 | * | |
787 | * The job is very similar to ftrace_raw_event_<call> except that we don't | |
788 | * insert in the ring buffer but in a perf counter. | |
789 | * | |
790 | * static void ftrace_perf_<call>(proto) | |
791 | * { | |
792 | * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets; | |
793 | * struct ftrace_event_call *event_call = &event_<call>; | |
794 | * extern void perf_tp_event(int, u64, u64, void *, int); | |
795 | * struct ftrace_raw_##call *entry; | |
796 | * struct perf_trace_buf *trace_buf; | |
797 | * u64 __addr = 0, __count = 1; | |
798 | * unsigned long irq_flags; | |
799 | * struct trace_entry *ent; | |
800 | * int __entry_size; | |
801 | * int __data_size; | |
802 | * int __cpu | |
803 | * int pc; | |
804 | * | |
805 | * pc = preempt_count(); | |
806 | * | |
807 | * __data_size = ftrace_get_offsets_<call>(&__data_offsets, args); | |
808 | * | |
809 | * // Below we want to get the aligned size by taking into account | |
810 | * // the u32 field that will later store the buffer size | |
811 | * __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32), | |
812 | * sizeof(u64)); | |
813 | * __entry_size -= sizeof(u32); | |
814 | * | |
815 | * // Protect the non nmi buffer | |
816 | * // This also protects the rcu read side | |
817 | * local_irq_save(irq_flags); | |
818 | * __cpu = smp_processor_id(); | |
819 | * | |
820 | * if (in_nmi()) | |
821 | * trace_buf = rcu_dereference_sched(perf_trace_buf_nmi); | |
822 | * else | |
823 | * trace_buf = rcu_dereference_sched(perf_trace_buf); | |
824 | * | |
825 | * if (!trace_buf) | |
826 | * goto end; | |
827 | * | |
828 | * trace_buf = per_cpu_ptr(trace_buf, __cpu); | |
829 | * | |
830 | * // Avoid recursion from perf that could mess up the buffer | |
831 | * if (trace_buf->recursion++) | |
832 | * goto end_recursion; | |
833 | * | |
834 | * raw_data = trace_buf->buf; | |
835 | * | |
836 | * // Make recursion update visible before entering perf_tp_event | |
837 | * // so that we protect from perf recursions. | |
838 | * | |
839 | * barrier(); | |
840 | * | |
841 | * //zero dead bytes from alignment to avoid stack leak to userspace: | |
842 | * *(u64 *)(&raw_data[__entry_size - sizeof(u64)]) = 0ULL; | |
843 | * entry = (struct ftrace_raw_<call> *)raw_data; | |
844 | * ent = &entry->ent; | |
845 | * tracing_generic_entry_update(ent, irq_flags, pc); | |
846 | * ent->type = event_call->id; | |
847 | * | |
848 | * <tstruct> <- do some jobs with dynamic arrays | |
849 | * | |
850 | * <assign> <- affect our values | |
851 | * | |
852 | * perf_tp_event(event_call->id, __addr, __count, entry, | |
853 | * __entry_size); <- submit them to perf counter | |
854 | * | |
855 | * } | |
856 | */ | |
857 | ||
858 | #ifdef CONFIG_PERF_EVENTS | |
859 | ||
860 | #undef __entry | |
861 | #define __entry entry | |
862 | ||
863 | #undef __get_dynamic_array | |
864 | #define __get_dynamic_array(field) \ | |
865 | ((void *)__entry + (__entry->__data_loc_##field & 0xffff)) | |
866 | ||
867 | #undef __get_str | |
868 | #define __get_str(field) (char *)__get_dynamic_array(field) | |
869 | ||
870 | #undef __perf_addr | |
871 | #define __perf_addr(a) __addr = (a) | |
872 | ||
873 | #undef __perf_count | |
874 | #define __perf_count(c) __count = (c) | |
875 | ||
876 | #undef DECLARE_EVENT_CLASS | |
877 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ | |
878 | static notrace void \ | |
879 | perf_trace_##call(void *__data, proto) \ | |
880 | { \ | |
881 | struct ftrace_event_call *event_call = __data; \ | |
882 | struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\ | |
883 | struct ftrace_raw_##call *entry; \ | |
884 | struct pt_regs __regs; \ | |
885 | u64 __addr = 0, __count = 1; \ | |
886 | struct hlist_head *head; \ | |
887 | int __entry_size; \ | |
888 | int __data_size; \ | |
889 | int rctx; \ | |
890 | \ | |
891 | perf_fetch_caller_regs(&__regs); \ | |
892 | \ | |
893 | __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \ | |
894 | __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\ | |
895 | sizeof(u64)); \ | |
896 | __entry_size -= sizeof(u32); \ | |
897 | \ | |
898 | if (WARN_ONCE(__entry_size > PERF_MAX_TRACE_SIZE, \ | |
899 | "profile buffer not large enough")) \ | |
900 | return; \ | |
901 | \ | |
902 | entry = (struct ftrace_raw_##call *)perf_trace_buf_prepare( \ | |
903 | __entry_size, event_call->event.type, &__regs, &rctx); \ | |
904 | if (!entry) \ | |
905 | return; \ | |
906 | \ | |
907 | tstruct \ | |
908 | \ | |
909 | { assign; } \ | |
910 | \ | |
911 | head = this_cpu_ptr(event_call->perf_events); \ | |
912 | perf_trace_buf_submit(entry, __entry_size, rctx, __addr, \ | |
913 | __count, &__regs, head); \ | |
914 | } | |
915 | ||
916 | /* | |
917 | * This part is compiled out, it is only here as a build time check | |
918 | * to make sure that if the tracepoint handling changes, the | |
919 | * perf probe will fail to compile unless it too is updated. | |
920 | */ | |
921 | #undef DEFINE_EVENT | |
922 | #define DEFINE_EVENT(template, call, proto, args) \ | |
923 | static inline void perf_test_probe_##call(void) \ | |
924 | { \ | |
925 | check_trace_callback_type_##call(perf_trace_##template); \ | |
926 | } | |
927 | ||
928 | ||
929 | #undef DEFINE_EVENT_PRINT | |
930 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ | |
931 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) | |
932 | ||
933 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
934 | #endif /* CONFIG_PERF_EVENTS */ | |
935 | ||
936 | #undef _TRACE_PROFILE_INIT | |
1d12cebd | 937 | #endif //0 |