This source file includes following definitions.
- inc_group_count
- parse_events_error
1 %pure-parser
2 %parse-param {void *_parse_state}
3 %parse-param {void *scanner}
4 %lex-param {void* scanner}
5 %locations
6
7 %{
8
9 #define YYDEBUG 1
10
11 #include <fnmatch.h>
12 #include <stdio.h>
13 #include <linux/compiler.h>
14 #include <linux/types.h>
15 #include "pmu.h"
16 #include "evsel.h"
17 #include "parse-events.h"
18 #include "parse-events-bison.h"
19
20 void parse_events_error(YYLTYPE *loc, void *parse_state, void *scanner, char const *msg);
21
22 #define ABORT_ON(val) \
23 do { \
24 if (val) \
25 YYABORT; \
26 } while (0)
27
28 #define ALLOC_LIST(list) \
29 do { \
30 list = malloc(sizeof(*list)); \
31 ABORT_ON(!list); \
32 INIT_LIST_HEAD(list); \
33 } while (0)
34
35 static void inc_group_count(struct list_head *list,
36 struct parse_events_state *parse_state)
37 {
38
39 if (!list_is_last(list->next, list))
40 parse_state->nr_groups++;
41 }
42
43 %}
44
45 %token PE_START_EVENTS PE_START_TERMS
46 %token PE_VALUE PE_VALUE_SYM_HW PE_VALUE_SYM_SW PE_RAW PE_TERM
47 %token PE_VALUE_SYM_TOOL
48 %token PE_EVENT_NAME
49 %token PE_NAME
50 %token PE_BPF_OBJECT PE_BPF_SOURCE
51 %token PE_MODIFIER_EVENT PE_MODIFIER_BP
52 %token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT
53 %token PE_PREFIX_MEM PE_PREFIX_RAW PE_PREFIX_GROUP
54 %token PE_ERROR
55 %token PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT
56 %token PE_ARRAY_ALL PE_ARRAY_RANGE
57 %token PE_DRV_CFG_TERM
58 %type <num> PE_VALUE
59 %type <num> PE_VALUE_SYM_HW
60 %type <num> PE_VALUE_SYM_SW
61 %type <num> PE_VALUE_SYM_TOOL
62 %type <num> PE_RAW
63 %type <num> PE_TERM
64 %type <str> PE_NAME
65 %type <str> PE_BPF_OBJECT
66 %type <str> PE_BPF_SOURCE
67 %type <str> PE_NAME_CACHE_TYPE
68 %type <str> PE_NAME_CACHE_OP_RESULT
69 %type <str> PE_MODIFIER_EVENT
70 %type <str> PE_MODIFIER_BP
71 %type <str> PE_EVENT_NAME
72 %type <str> PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT
73 %type <str> PE_DRV_CFG_TERM
74 %type <num> value_sym
75 %type <head> event_config
76 %type <head> opt_event_config
77 %type <head> opt_pmu_config
78 %type <term> event_term
79 %type <head> event_pmu
80 %type <head> event_legacy_symbol
81 %type <head> event_legacy_cache
82 %type <head> event_legacy_mem
83 %type <head> event_legacy_tracepoint
84 %type <tracepoint_name> tracepoint_name
85 %type <head> event_legacy_numeric
86 %type <head> event_legacy_raw
87 %type <head> event_bpf_file
88 %type <head> event_def
89 %type <head> event_mod
90 %type <head> event_name
91 %type <head> event
92 %type <head> events
93 %type <head> group_def
94 %type <head> group
95 %type <head> groups
96 %type <array> array
97 %type <array> array_term
98 %type <array> array_terms
99
100 %union
101 {
102 char *str;
103 u64 num;
104 struct list_head *head;
105 struct parse_events_term *term;
106 struct tracepoint_name {
107 char *sys;
108 char *event;
109 } tracepoint_name;
110 struct parse_events_array array;
111 }
112 %%
113
114 start:
115 PE_START_EVENTS start_events
116 |
117 PE_START_TERMS start_terms
118
119 start_events: groups
120 {
121 struct parse_events_state *parse_state = _parse_state;
122
123 parse_events_update_lists($1, &parse_state->list);
124 }
125
126 groups:
127 groups ',' group
128 {
129 struct list_head *list = $1;
130 struct list_head *group = $3;
131
132 parse_events_update_lists(group, list);
133 $$ = list;
134 }
135 |
136 groups ',' event
137 {
138 struct list_head *list = $1;
139 struct list_head *event = $3;
140
141 parse_events_update_lists(event, list);
142 $$ = list;
143 }
144 |
145 group
146 |
147 event
148
149 group:
150 group_def ':' PE_MODIFIER_EVENT
151 {
152 struct list_head *list = $1;
153
154 ABORT_ON(parse_events__modifier_group(list, $3));
155 $$ = list;
156 }
157 |
158 group_def
159
160 group_def:
161 PE_NAME '{' events '}'
162 {
163 struct list_head *list = $3;
164
165 inc_group_count(list, _parse_state);
166 parse_events__set_leader($1, list, _parse_state);
167 $$ = list;
168 }
169 |
170 '{' events '}'
171 {
172 struct list_head *list = $2;
173
174 inc_group_count(list, _parse_state);
175 parse_events__set_leader(NULL, list, _parse_state);
176 $$ = list;
177 }
178
179 events:
180 events ',' event
181 {
182 struct list_head *event = $3;
183 struct list_head *list = $1;
184
185 parse_events_update_lists(event, list);
186 $$ = list;
187 }
188 |
189 event
190
191 event: event_mod
192
193 event_mod:
194 event_name PE_MODIFIER_EVENT
195 {
196 struct list_head *list = $1;
197
198
199
200
201
202
203 ABORT_ON(parse_events__modifier_event(list, $2, false));
204 $$ = list;
205 }
206 |
207 event_name
208
209 event_name:
210 PE_EVENT_NAME event_def
211 {
212 ABORT_ON(parse_events_name($2, $1));
213 free($1);
214 $$ = $2;
215 }
216 |
217 event_def
218
219 event_def: event_pmu |
220 event_legacy_symbol |
221 event_legacy_cache sep_dc |
222 event_legacy_mem |
223 event_legacy_tracepoint sep_dc |
224 event_legacy_numeric sep_dc |
225 event_legacy_raw sep_dc |
226 event_bpf_file
227
228 event_pmu:
229 PE_NAME opt_pmu_config
230 {
231 struct parse_events_state *parse_state = _parse_state;
232 struct parse_events_error *error = parse_state->error;
233 struct list_head *list, *orig_terms, *terms;
234
235 if (parse_events_copy_term_list($2, &orig_terms))
236 YYABORT;
237
238 if (error)
239 error->idx = @1.first_column;
240
241 ALLOC_LIST(list);
242 if (parse_events_add_pmu(_parse_state, list, $1, $2, false, false)) {
243 struct perf_pmu *pmu = NULL;
244 int ok = 0;
245 char *pattern;
246
247 if (asprintf(&pattern, "%s*", $1) < 0)
248 YYABORT;
249
250 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
251 char *name = pmu->name;
252
253 if (!strncmp(name, "uncore_", 7) &&
254 strncmp($1, "uncore_", 7))
255 name += 7;
256 if (!fnmatch(pattern, name, 0)) {
257 if (parse_events_copy_term_list(orig_terms, &terms)) {
258 free(pattern);
259 YYABORT;
260 }
261 if (!parse_events_add_pmu(_parse_state, list, pmu->name, terms, true, false))
262 ok++;
263 parse_events_terms__delete(terms);
264 }
265 }
266
267 free(pattern);
268
269 if (!ok)
270 YYABORT;
271 }
272 parse_events_terms__delete($2);
273 parse_events_terms__delete(orig_terms);
274 $$ = list;
275 }
276 |
277 PE_KERNEL_PMU_EVENT sep_dc
278 {
279 struct list_head *list;
280
281 if (parse_events_multi_pmu_add(_parse_state, $1, &list) < 0)
282 YYABORT;
283 $$ = list;
284 }
285 |
286 PE_PMU_EVENT_PRE '-' PE_PMU_EVENT_SUF sep_dc
287 {
288 struct list_head *list;
289 char pmu_name[128];
290
291 snprintf(&pmu_name, 128, "%s-%s", $1, $3);
292 if (parse_events_multi_pmu_add(_parse_state, pmu_name, &list) < 0)
293 YYABORT;
294 $$ = list;
295 }
296
297 value_sym:
298 PE_VALUE_SYM_HW
299 |
300 PE_VALUE_SYM_SW
301
302 event_legacy_symbol:
303 value_sym '/' event_config '/'
304 {
305 struct list_head *list;
306 int type = $1 >> 16;
307 int config = $1 & 255;
308
309 ALLOC_LIST(list);
310 ABORT_ON(parse_events_add_numeric(_parse_state, list, type, config, $3));
311 parse_events_terms__delete($3);
312 $$ = list;
313 }
314 |
315 value_sym sep_slash_slash_dc
316 {
317 struct list_head *list;
318 int type = $1 >> 16;
319 int config = $1 & 255;
320
321 ALLOC_LIST(list);
322 ABORT_ON(parse_events_add_numeric(_parse_state, list, type, config, NULL));
323 $$ = list;
324 }
325 |
326 PE_VALUE_SYM_TOOL sep_slash_slash_dc
327 {
328 struct list_head *list;
329
330 ALLOC_LIST(list);
331 ABORT_ON(parse_events_add_tool(_parse_state, list, $1));
332 $$ = list;
333 }
334
335 event_legacy_cache:
336 PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT opt_event_config
337 {
338 struct parse_events_state *parse_state = _parse_state;
339 struct parse_events_error *error = parse_state->error;
340 struct list_head *list;
341
342 ALLOC_LIST(list);
343 ABORT_ON(parse_events_add_cache(list, &parse_state->idx, $1, $3, $5, error, $6));
344 parse_events_terms__delete($6);
345 $$ = list;
346 }
347 |
348 PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT opt_event_config
349 {
350 struct parse_events_state *parse_state = _parse_state;
351 struct parse_events_error *error = parse_state->error;
352 struct list_head *list;
353
354 ALLOC_LIST(list);
355 ABORT_ON(parse_events_add_cache(list, &parse_state->idx, $1, $3, NULL, error, $4));
356 parse_events_terms__delete($4);
357 $$ = list;
358 }
359 |
360 PE_NAME_CACHE_TYPE opt_event_config
361 {
362 struct parse_events_state *parse_state = _parse_state;
363 struct parse_events_error *error = parse_state->error;
364 struct list_head *list;
365
366 ALLOC_LIST(list);
367 ABORT_ON(parse_events_add_cache(list, &parse_state->idx, $1, NULL, NULL, error, $2));
368 parse_events_terms__delete($2);
369 $$ = list;
370 }
371
372 event_legacy_mem:
373 PE_PREFIX_MEM PE_VALUE '/' PE_VALUE ':' PE_MODIFIER_BP sep_dc
374 {
375 struct parse_events_state *parse_state = _parse_state;
376 struct list_head *list;
377
378 ALLOC_LIST(list);
379 ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
380 (void *) $2, $6, $4));
381 $$ = list;
382 }
383 |
384 PE_PREFIX_MEM PE_VALUE '/' PE_VALUE sep_dc
385 {
386 struct parse_events_state *parse_state = _parse_state;
387 struct list_head *list;
388
389 ALLOC_LIST(list);
390 ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
391 (void *) $2, NULL, $4));
392 $$ = list;
393 }
394 |
395 PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
396 {
397 struct parse_events_state *parse_state = _parse_state;
398 struct list_head *list;
399
400 ALLOC_LIST(list);
401 ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
402 (void *) $2, $4, 0));
403 $$ = list;
404 }
405 |
406 PE_PREFIX_MEM PE_VALUE sep_dc
407 {
408 struct parse_events_state *parse_state = _parse_state;
409 struct list_head *list;
410
411 ALLOC_LIST(list);
412 ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
413 (void *) $2, NULL, 0));
414 $$ = list;
415 }
416
417 event_legacy_tracepoint:
418 tracepoint_name opt_event_config
419 {
420 struct parse_events_state *parse_state = _parse_state;
421 struct parse_events_error *error = parse_state->error;
422 struct list_head *list;
423
424 ALLOC_LIST(list);
425 if (error)
426 error->idx = @1.first_column;
427
428 if (parse_events_add_tracepoint(list, &parse_state->idx, $1.sys, $1.event,
429 error, $2))
430 return -1;
431
432 $$ = list;
433 }
434
435 tracepoint_name:
436 PE_NAME '-' PE_NAME ':' PE_NAME
437 {
438 char sys_name[128];
439 struct tracepoint_name tracepoint;
440
441 snprintf(&sys_name, 128, "%s-%s", $1, $3);
442 tracepoint.sys = &sys_name;
443 tracepoint.event = $5;
444
445 $$ = tracepoint;
446 }
447 |
448 PE_NAME ':' PE_NAME
449 {
450 struct tracepoint_name tracepoint = {$1, $3};
451
452 $$ = tracepoint;
453 }
454
455 event_legacy_numeric:
456 PE_VALUE ':' PE_VALUE opt_event_config
457 {
458 struct list_head *list;
459
460 ALLOC_LIST(list);
461 ABORT_ON(parse_events_add_numeric(_parse_state, list, (u32)$1, $3, $4));
462 parse_events_terms__delete($4);
463 $$ = list;
464 }
465
466 event_legacy_raw:
467 PE_RAW opt_event_config
468 {
469 struct list_head *list;
470
471 ALLOC_LIST(list);
472 ABORT_ON(parse_events_add_numeric(_parse_state, list, PERF_TYPE_RAW, $1, $2));
473 parse_events_terms__delete($2);
474 $$ = list;
475 }
476
477 event_bpf_file:
478 PE_BPF_OBJECT opt_event_config
479 {
480 struct parse_events_state *parse_state = _parse_state;
481 struct list_head *list;
482
483 ALLOC_LIST(list);
484 ABORT_ON(parse_events_load_bpf(parse_state, list, $1, false, $2));
485 parse_events_terms__delete($2);
486 $$ = list;
487 }
488 |
489 PE_BPF_SOURCE opt_event_config
490 {
491 struct list_head *list;
492
493 ALLOC_LIST(list);
494 ABORT_ON(parse_events_load_bpf(_parse_state, list, $1, true, $2));
495 parse_events_terms__delete($2);
496 $$ = list;
497 }
498
499 opt_event_config:
500 '/' event_config '/'
501 {
502 $$ = $2;
503 }
504 |
505 '/' '/'
506 {
507 $$ = NULL;
508 }
509 |
510 {
511 $$ = NULL;
512 }
513
514 opt_pmu_config:
515 '/' event_config '/'
516 {
517 $$ = $2;
518 }
519 |
520 '/' '/'
521 {
522 $$ = NULL;
523 }
524
525 start_terms: event_config
526 {
527 struct parse_events_state *parse_state = _parse_state;
528 parse_state->terms = $1;
529 }
530
531 event_config:
532 event_config ',' event_term
533 {
534 struct list_head *head = $1;
535 struct parse_events_term *term = $3;
536
537 ABORT_ON(!head);
538 list_add_tail(&term->list, head);
539 $$ = $1;
540 }
541 |
542 event_term
543 {
544 struct list_head *head = malloc(sizeof(*head));
545 struct parse_events_term *term = $1;
546
547 ABORT_ON(!head);
548 INIT_LIST_HEAD(head);
549 list_add_tail(&term->list, head);
550 $$ = head;
551 }
552
553 event_term:
554 PE_NAME '=' PE_NAME
555 {
556 struct parse_events_term *term;
557
558 ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
559 $1, $3, &@1, &@3));
560 $$ = term;
561 }
562 |
563 PE_NAME '=' PE_VALUE
564 {
565 struct parse_events_term *term;
566
567 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
568 $1, $3, false, &@1, &@3));
569 $$ = term;
570 }
571 |
572 PE_NAME '=' PE_VALUE_SYM_HW
573 {
574 struct parse_events_term *term;
575 int config = $3 & 255;
576
577 ABORT_ON(parse_events_term__sym_hw(&term, $1, config));
578 $$ = term;
579 }
580 |
581 PE_NAME
582 {
583 struct parse_events_term *term;
584
585 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
586 $1, 1, true, &@1, NULL));
587 $$ = term;
588 }
589 |
590 PE_VALUE_SYM_HW
591 {
592 struct parse_events_term *term;
593 int config = $1 & 255;
594
595 ABORT_ON(parse_events_term__sym_hw(&term, NULL, config));
596 $$ = term;
597 }
598 |
599 PE_TERM '=' PE_NAME
600 {
601 struct parse_events_term *term;
602
603 ABORT_ON(parse_events_term__str(&term, (int)$1, NULL, $3, &@1, &@3));
604 $$ = term;
605 }
606 |
607 PE_TERM '=' PE_VALUE
608 {
609 struct parse_events_term *term;
610
611 ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, $3, false, &@1, &@3));
612 $$ = term;
613 }
614 |
615 PE_TERM
616 {
617 struct parse_events_term *term;
618
619 ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, 1, true, &@1, NULL));
620 $$ = term;
621 }
622 |
623 PE_NAME array '=' PE_NAME
624 {
625 struct parse_events_term *term;
626
627 ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
628 $1, $4, &@1, &@4));
629
630 term->array = $2;
631 $$ = term;
632 }
633 |
634 PE_NAME array '=' PE_VALUE
635 {
636 struct parse_events_term *term;
637
638 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
639 $1, $4, false, &@1, &@4));
640 term->array = $2;
641 $$ = term;
642 }
643 |
644 PE_DRV_CFG_TERM
645 {
646 struct parse_events_term *term;
647
648 ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_DRV_CFG,
649 $1, $1, &@1, NULL));
650 $$ = term;
651 }
652
653 array:
654 '[' array_terms ']'
655 {
656 $$ = $2;
657 }
658 |
659 PE_ARRAY_ALL
660 {
661 $$.nr_ranges = 0;
662 $$.ranges = NULL;
663 }
664
665 array_terms:
666 array_terms ',' array_term
667 {
668 struct parse_events_array new_array;
669
670 new_array.nr_ranges = $1.nr_ranges + $3.nr_ranges;
671 new_array.ranges = malloc(sizeof(new_array.ranges[0]) *
672 new_array.nr_ranges);
673 ABORT_ON(!new_array.ranges);
674 memcpy(&new_array.ranges[0], $1.ranges,
675 $1.nr_ranges * sizeof(new_array.ranges[0]));
676 memcpy(&new_array.ranges[$1.nr_ranges], $3.ranges,
677 $3.nr_ranges * sizeof(new_array.ranges[0]));
678 free($1.ranges);
679 free($3.ranges);
680 $$ = new_array;
681 }
682 |
683 array_term
684
685 array_term:
686 PE_VALUE
687 {
688 struct parse_events_array array;
689
690 array.nr_ranges = 1;
691 array.ranges = malloc(sizeof(array.ranges[0]));
692 ABORT_ON(!array.ranges);
693 array.ranges[0].start = $1;
694 array.ranges[0].length = 1;
695 $$ = array;
696 }
697 |
698 PE_VALUE PE_ARRAY_RANGE PE_VALUE
699 {
700 struct parse_events_array array;
701
702 ABORT_ON($3 < $1);
703 array.nr_ranges = 1;
704 array.ranges = malloc(sizeof(array.ranges[0]));
705 ABORT_ON(!array.ranges);
706 array.ranges[0].start = $1;
707 array.ranges[0].length = $3 - $1 + 1;
708 $$ = array;
709 }
710
711 sep_dc: ':' |
712
713 sep_slash_slash_dc: '/' '/' | ':' |
714
715 %%
716
717 void parse_events_error(YYLTYPE *loc, void *parse_state,
718 void *scanner __maybe_unused,
719 char const *msg __maybe_unused)
720 {
721 parse_events_evlist_error(parse_state, loc->last_column, "parser error");
722 }