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1%define api.pure full
2%parse-param {void *_parse_state}
3%parse-param {void *scanner}
4%lex-param {void* scanner}
5%locations
6
7%{
8
9#ifndef NDEBUG
10#define YYDEBUG 1
11#endif
12
13#include <errno.h>
14#include <linux/compiler.h>
15#include <linux/types.h>
16#include "pmu.h"
17#include "pmus.h"
18#include "evsel.h"
19#include "parse-events.h"
20#include "parse-events-bison.h"
21
22int parse_events_lex(YYSTYPE * yylval_param, YYLTYPE * yylloc_param , void *yyscanner);
23void parse_events_error(YYLTYPE *loc, void *parse_state, void *scanner, char const *msg);
24
25#define PE_ABORT(val) \
26do { \
27 if (val == -ENOMEM) \
28 YYNOMEM; \
29 YYABORT; \
30} while (0)
31
32static struct list_head* alloc_list(void)
33{
34 struct list_head *list;
35
36 list = malloc(sizeof(*list));
37 if (!list)
38 return NULL;
39
40 INIT_LIST_HEAD(list);
41 return list;
42}
43
44static void free_list_evsel(struct list_head* list_evsel)
45{
46 struct evsel *evsel, *tmp;
47
48 list_for_each_entry_safe(evsel, tmp, list_evsel, core.node) {
49 list_del_init(&evsel->core.node);
50 evsel__delete(evsel);
51 }
52 free(list_evsel);
53}
54
55%}
56
57%token PE_START_EVENTS PE_START_TERMS
58%token PE_VALUE PE_VALUE_SYM_HW PE_VALUE_SYM_SW PE_TERM
59%token PE_EVENT_NAME
60%token PE_RAW PE_NAME
61%token PE_MODIFIER_EVENT PE_MODIFIER_BP PE_BP_COLON PE_BP_SLASH
62%token PE_LEGACY_CACHE
63%token PE_PREFIX_MEM
64%token PE_ERROR
65%token PE_DRV_CFG_TERM
66%token PE_TERM_HW
67%type <num> PE_VALUE
68%type <num> PE_VALUE_SYM_HW
69%type <num> PE_VALUE_SYM_SW
70%type <mod> PE_MODIFIER_EVENT
71%type <term_type> PE_TERM
72%type <num> value_sym
73%type <str> PE_RAW
74%type <str> PE_NAME
75%type <str> PE_LEGACY_CACHE
76%type <str> PE_MODIFIER_BP
77%type <str> PE_EVENT_NAME
78%type <str> PE_DRV_CFG_TERM
79%type <str> name_or_raw
80%destructor { free ($$); } <str>
81%type <term> event_term
82%destructor { parse_events_term__delete ($$); } <term>
83%type <list_terms> event_config
84%type <list_terms> opt_event_config
85%type <list_terms> opt_pmu_config
86%destructor { parse_events_terms__delete ($$); } <list_terms>
87%type <list_evsel> event_pmu
88%type <list_evsel> event_legacy_symbol
89%type <list_evsel> event_legacy_cache
90%type <list_evsel> event_legacy_mem
91%type <list_evsel> event_legacy_tracepoint
92%type <list_evsel> event_legacy_numeric
93%type <list_evsel> event_legacy_raw
94%type <list_evsel> event_def
95%type <list_evsel> event_mod
96%type <list_evsel> event_name
97%type <list_evsel> event
98%type <list_evsel> events
99%type <list_evsel> group_def
100%type <list_evsel> group
101%type <list_evsel> groups
102%destructor { free_list_evsel ($$); } <list_evsel>
103%type <tracepoint_name> tracepoint_name
104%destructor { free ($$.sys); free ($$.event); } <tracepoint_name>
105%type <hardware_term> PE_TERM_HW
106%destructor { free ($$.str); } <hardware_term>
107
108%union
109{
110 char *str;
111 u64 num;
112 struct parse_events_modifier mod;
113 enum parse_events__term_type term_type;
114 struct list_head *list_evsel;
115 struct parse_events_terms *list_terms;
116 struct parse_events_term *term;
117 struct tracepoint_name {
118 char *sys;
119 char *event;
120 } tracepoint_name;
121 struct hardware_term {
122 char *str;
123 u64 num;
124 } hardware_term;
125}
126%%
127
128 /*
129 * Entry points. We are either parsing events or terminals. Just terminal
130 * parsing is used for parsing events in sysfs.
131 */
132start:
133PE_START_EVENTS start_events
134|
135PE_START_TERMS start_terms
136
137start_events: groups
138{
139 /* Take the parsed events, groups.. and place into parse_state. */
140 struct list_head *groups = $1;
141 struct parse_events_state *parse_state = _parse_state;
142
143 list_splice_tail(groups, &parse_state->list);
144 free(groups);
145}
146
147groups: /* A list of groups or events. */
148groups ',' group
149{
150 /* Merge group into the list of events/groups. */
151 struct list_head *groups = $1;
152 struct list_head *group = $3;
153
154 list_splice_tail(group, groups);
155 free(group);
156 $$ = groups;
157}
158|
159groups ',' event
160{
161 /* Merge event into the list of events/groups. */
162 struct list_head *groups = $1;
163 struct list_head *event = $3;
164
165
166 list_splice_tail(event, groups);
167 free(event);
168 $$ = groups;
169}
170|
171group
172|
173event
174
175group:
176group_def ':' PE_MODIFIER_EVENT
177{
178 /* Apply the modifier to the events in the group_def. */
179 struct list_head *list = $1;
180 int err;
181
182 err = parse_events__modifier_group(_parse_state, &@3, list, $3);
183 if (err)
184 YYABORT;
185 $$ = list;
186}
187|
188group_def
189
190group_def:
191PE_NAME '{' events '}'
192{
193 struct list_head *list = $3;
194
195 /*
196 * Set the first entry of list to be the leader. Set the group name on
197 * the leader to $1 taking ownership.
198 */
199 parse_events__set_leader($1, list);
200 $$ = list;
201}
202|
203'{' events '}'
204{
205 struct list_head *list = $2;
206
207 /* Set the first entry of list to be the leader clearing the group name. */
208 parse_events__set_leader(NULL, list);
209 $$ = list;
210}
211
212events:
213events ',' event
214{
215 struct list_head *events = $1;
216 struct list_head *event = $3;
217
218 list_splice_tail(event, events);
219 free(event);
220 $$ = events;
221}
222|
223event
224
225event: event_mod
226
227event_mod:
228event_name PE_MODIFIER_EVENT
229{
230 struct list_head *list = $1;
231 int err;
232
233 /*
234 * Apply modifier on all events added by single event definition
235 * (there could be more events added for multiple tracepoint
236 * definitions via '*?'.
237 */
238 err = parse_events__modifier_event(_parse_state, &@2, list, $2);
239 if (err)
240 YYABORT;
241 $$ = list;
242}
243|
244event_name
245
246event_name:
247PE_EVENT_NAME event_def
248{
249 /*
250 * When an event is parsed the text is rewound and the entire text of
251 * the event is set to the str of PE_EVENT_NAME token matched here. If
252 * no name was on an event via a term, set the name to the entire text
253 * taking ownership of the allocation.
254 */
255 int err = parse_events__set_default_name($2, $1);
256
257 if (err) {
258 free_list_evsel($2);
259 YYNOMEM;
260 }
261 $$ = $2;
262}
263|
264event_def
265
266event_def: event_pmu |
267 event_legacy_symbol |
268 event_legacy_cache sep_dc |
269 event_legacy_mem sep_dc |
270 event_legacy_tracepoint sep_dc |
271 event_legacy_numeric sep_dc |
272 event_legacy_raw sep_dc
273
274event_pmu:
275PE_NAME opt_pmu_config
276{
277 /* List of created evsels. */
278 struct list_head *list = NULL;
279 int err = parse_events_multi_pmu_add_or_add_pmu(_parse_state, $1, $2, &list, &@1);
280
281 parse_events_terms__delete($2);
282 free($1);
283 if (err)
284 PE_ABORT(err);
285 $$ = list;
286}
287|
288PE_NAME sep_dc
289{
290 struct list_head *list;
291 int err;
292
293 err = parse_events_multi_pmu_add(_parse_state, $1, PERF_COUNT_HW_MAX, NULL, &list, &@1);
294 if (err < 0) {
295 struct parse_events_state *parse_state = _parse_state;
296 struct parse_events_error *error = parse_state->error;
297 char *help;
298
299 if (asprintf(&help, "Unable to find event on a PMU of '%s'", $1) < 0)
300 help = NULL;
301 parse_events_error__handle(error, @1.first_column, strdup("Bad event name"), help);
302 free($1);
303 PE_ABORT(err);
304 }
305 free($1);
306 $$ = list;
307}
308
309value_sym:
310PE_VALUE_SYM_HW
311|
312PE_VALUE_SYM_SW
313
314event_legacy_symbol:
315value_sym '/' event_config '/'
316{
317 struct list_head *list;
318 int type = $1 >> 16;
319 int config = $1 & 255;
320 int err;
321 bool wildcard = (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE);
322
323 list = alloc_list();
324 if (!list)
325 YYNOMEM;
326 err = parse_events_add_numeric(_parse_state, list, type, config, $3, wildcard);
327 parse_events_terms__delete($3);
328 if (err) {
329 free_list_evsel(list);
330 PE_ABORT(err);
331 }
332 $$ = list;
333}
334|
335value_sym sep_slash_slash_dc
336{
337 struct list_head *list;
338 int type = $1 >> 16;
339 int config = $1 & 255;
340 bool wildcard = (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE);
341 int err;
342
343 list = alloc_list();
344 if (!list)
345 YYNOMEM;
346 err = parse_events_add_numeric(_parse_state, list, type, config, /*head_config=*/NULL, wildcard);
347 if (err)
348 PE_ABORT(err);
349 $$ = list;
350}
351
352event_legacy_cache:
353PE_LEGACY_CACHE opt_event_config
354{
355 struct parse_events_state *parse_state = _parse_state;
356 struct list_head *list;
357 int err;
358
359 list = alloc_list();
360 if (!list)
361 YYNOMEM;
362
363 err = parse_events_add_cache(list, &parse_state->idx, $1, parse_state, $2);
364
365 parse_events_terms__delete($2);
366 free($1);
367 if (err) {
368 free_list_evsel(list);
369 PE_ABORT(err);
370 }
371 $$ = list;
372}
373
374event_legacy_mem:
375PE_PREFIX_MEM PE_VALUE PE_BP_SLASH PE_VALUE PE_BP_COLON PE_MODIFIER_BP opt_event_config
376{
377 struct list_head *list;
378 int err;
379
380 list = alloc_list();
381 if (!list)
382 YYNOMEM;
383
384 err = parse_events_add_breakpoint(_parse_state, list,
385 $2, $6, $4, $7);
386 parse_events_terms__delete($7);
387 free($6);
388 if (err) {
389 free(list);
390 PE_ABORT(err);
391 }
392 $$ = list;
393}
394|
395PE_PREFIX_MEM PE_VALUE PE_BP_SLASH PE_VALUE opt_event_config
396{
397 struct list_head *list;
398 int err;
399
400 list = alloc_list();
401 if (!list)
402 YYNOMEM;
403
404 err = parse_events_add_breakpoint(_parse_state, list,
405 $2, NULL, $4, $5);
406 parse_events_terms__delete($5);
407 if (err) {
408 free(list);
409 PE_ABORT(err);
410 }
411 $$ = list;
412}
413|
414PE_PREFIX_MEM PE_VALUE PE_BP_COLON PE_MODIFIER_BP opt_event_config
415{
416 struct list_head *list;
417 int err;
418
419 list = alloc_list();
420 if (!list)
421 YYNOMEM;
422
423 err = parse_events_add_breakpoint(_parse_state, list,
424 $2, $4, 0, $5);
425 parse_events_terms__delete($5);
426 free($4);
427 if (err) {
428 free(list);
429 PE_ABORT(err);
430 }
431 $$ = list;
432}
433|
434PE_PREFIX_MEM PE_VALUE opt_event_config
435{
436 struct list_head *list;
437 int err;
438
439 list = alloc_list();
440 if (!list)
441 YYNOMEM;
442 err = parse_events_add_breakpoint(_parse_state, list,
443 $2, NULL, 0, $3);
444 parse_events_terms__delete($3);
445 if (err) {
446 free(list);
447 PE_ABORT(err);
448 }
449 $$ = list;
450}
451
452event_legacy_tracepoint:
453tracepoint_name opt_event_config
454{
455 struct parse_events_state *parse_state = _parse_state;
456 struct parse_events_error *error = parse_state->error;
457 struct list_head *list;
458 int err;
459
460 list = alloc_list();
461 if (!list)
462 YYNOMEM;
463
464 err = parse_events_add_tracepoint(parse_state, list, $1.sys, $1.event,
465 error, $2, &@1);
466
467 parse_events_terms__delete($2);
468 free($1.sys);
469 free($1.event);
470 if (err) {
471 free(list);
472 PE_ABORT(err);
473 }
474 $$ = list;
475}
476
477tracepoint_name:
478PE_NAME ':' PE_NAME
479{
480 struct tracepoint_name tracepoint = {$1, $3};
481
482 $$ = tracepoint;
483}
484
485event_legacy_numeric:
486PE_VALUE ':' PE_VALUE opt_event_config
487{
488 struct list_head *list;
489 int err;
490
491 list = alloc_list();
492 if (!list)
493 YYNOMEM;
494 err = parse_events_add_numeric(_parse_state, list, (u32)$1, $3, $4,
495 /*wildcard=*/false);
496 parse_events_terms__delete($4);
497 if (err) {
498 free(list);
499 PE_ABORT(err);
500 }
501 $$ = list;
502}
503
504event_legacy_raw:
505PE_RAW opt_event_config
506{
507 struct list_head *list;
508 int err;
509 u64 num;
510
511 list = alloc_list();
512 if (!list)
513 YYNOMEM;
514 errno = 0;
515 num = strtoull($1 + 1, NULL, 16);
516 /* Given the lexer will only give [a-fA-F0-9]+ a failure here should be impossible. */
517 if (errno)
518 YYABORT;
519 free($1);
520 err = parse_events_add_numeric(_parse_state, list, PERF_TYPE_RAW, num, $2,
521 /*wildcard=*/false);
522 parse_events_terms__delete($2);
523 if (err) {
524 free(list);
525 PE_ABORT(err);
526 }
527 $$ = list;
528}
529
530opt_event_config:
531'/' event_config '/'
532{
533 $$ = $2;
534}
535|
536'/' '/'
537{
538 $$ = NULL;
539}
540|
541{
542 $$ = NULL;
543}
544
545opt_pmu_config:
546'/' event_config '/'
547{
548 $$ = $2;
549}
550|
551'/' '/'
552{
553 $$ = NULL;
554}
555
556start_terms: event_config
557{
558 struct parse_events_state *parse_state = _parse_state;
559 if (parse_state->terms) {
560 parse_events_terms__delete ($1);
561 YYABORT;
562 }
563 parse_state->terms = $1;
564}
565
566event_config:
567event_config ',' event_term
568{
569 struct parse_events_terms *head = $1;
570 struct parse_events_term *term = $3;
571
572 if (!head) {
573 parse_events_term__delete(term);
574 YYABORT;
575 }
576 list_add_tail(&term->list, &head->terms);
577 $$ = $1;
578}
579|
580event_term
581{
582 struct parse_events_terms *head = malloc(sizeof(*head));
583 struct parse_events_term *term = $1;
584
585 if (!head)
586 YYNOMEM;
587 parse_events_terms__init(head);
588 list_add_tail(&term->list, &head->terms);
589 $$ = head;
590}
591
592name_or_raw: PE_RAW | PE_NAME | PE_LEGACY_CACHE
593|
594PE_TERM_HW
595{
596 $$ = $1.str;
597}
598
599event_term:
600PE_RAW
601{
602 struct parse_events_term *term;
603 int err = parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_RAW,
604 strdup("raw"), $1, &@1, &@1);
605
606 if (err) {
607 free($1);
608 PE_ABORT(err);
609 }
610 $$ = term;
611}
612|
613name_or_raw '=' name_or_raw
614{
615 struct parse_events_term *term;
616 int err = parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER, $1, $3, &@1, &@3);
617
618 if (err) {
619 free($1);
620 free($3);
621 PE_ABORT(err);
622 }
623 $$ = term;
624}
625|
626name_or_raw '=' PE_VALUE
627{
628 struct parse_events_term *term;
629 int err = parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
630 $1, $3, /*novalue=*/false, &@1, &@3);
631
632 if (err) {
633 free($1);
634 PE_ABORT(err);
635 }
636 $$ = term;
637}
638|
639PE_LEGACY_CACHE
640{
641 struct parse_events_term *term;
642 int err = parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE,
643 $1, /*num=*/1, /*novalue=*/true, &@1, /*loc_val=*/NULL);
644
645 if (err) {
646 free($1);
647 PE_ABORT(err);
648 }
649 $$ = term;
650}
651|
652PE_NAME
653{
654 struct parse_events_term *term;
655 int err = parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
656 $1, /*num=*/1, /*novalue=*/true, &@1, /*loc_val=*/NULL);
657
658 if (err) {
659 free($1);
660 PE_ABORT(err);
661 }
662 $$ = term;
663}
664|
665PE_TERM_HW
666{
667 struct parse_events_term *term;
668 int err = parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_HARDWARE,
669 $1.str, $1.num & 255, /*novalue=*/false,
670 &@1, /*loc_val=*/NULL);
671
672 if (err) {
673 free($1.str);
674 PE_ABORT(err);
675 }
676 $$ = term;
677}
678|
679PE_TERM '=' name_or_raw
680{
681 struct parse_events_term *term;
682 int err = parse_events_term__str(&term, $1, /*config=*/NULL, $3, &@1, &@3);
683
684 if (err) {
685 free($3);
686 PE_ABORT(err);
687 }
688 $$ = term;
689}
690|
691PE_TERM '=' PE_TERM
692{
693 struct parse_events_term *term;
694 int err = parse_events_term__term(&term, $1, $3, &@1, &@3);
695
696 if (err)
697 PE_ABORT(err);
698
699 $$ = term;
700}
701|
702PE_TERM '=' PE_VALUE
703{
704 struct parse_events_term *term;
705 int err = parse_events_term__num(&term, $1,
706 /*config=*/NULL, $3, /*novalue=*/false,
707 &@1, &@3);
708
709 if (err)
710 PE_ABORT(err);
711
712 $$ = term;
713}
714|
715PE_TERM
716{
717 struct parse_events_term *term;
718 int err = parse_events_term__num(&term, $1,
719 /*config=*/NULL, /*num=*/1, /*novalue=*/true,
720 &@1, /*loc_val=*/NULL);
721
722 if (err)
723 PE_ABORT(err);
724
725 $$ = term;
726}
727|
728PE_DRV_CFG_TERM
729{
730 struct parse_events_term *term;
731 char *config = strdup($1);
732 int err;
733
734 if (!config)
735 YYNOMEM;
736 err = parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_DRV_CFG, config, $1, &@1, NULL);
737 if (err) {
738 free($1);
739 free(config);
740 PE_ABORT(err);
741 }
742 $$ = term;
743}
744
745sep_dc: ':' |
746
747sep_slash_slash_dc: '/' '/' | ':' |
748
749%%
750
751void parse_events_error(YYLTYPE *loc, void *_parse_state,
752 void *scanner __maybe_unused,
753 char const *msg __maybe_unused)
754{
755 struct parse_events_state *parse_state = _parse_state;
756
757 if (!parse_state->error || !list_empty(&parse_state->error->list))
758 return;
759
760 parse_events_error__handle(parse_state->error, loc->last_column,
761 strdup("Unrecognized input"), NULL);
762}
1%pure-parser
2%parse-param {void *_data}
3%parse-param {void *scanner}
4%lex-param {void* scanner}
5%locations
6
7%{
8
9#define YYDEBUG 1
10
11#include <linux/compiler.h>
12#include <linux/list.h>
13#include <linux/types.h>
14#include "util.h"
15#include "parse-events.h"
16#include "parse-events-bison.h"
17
18#define ABORT_ON(val) \
19do { \
20 if (val) \
21 YYABORT; \
22} while (0)
23
24#define ALLOC_LIST(list) \
25do { \
26 list = malloc(sizeof(*list)); \
27 ABORT_ON(!list); \
28 INIT_LIST_HEAD(list); \
29} while (0)
30
31static void inc_group_count(struct list_head *list,
32 struct parse_events_evlist *data)
33{
34 /* Count groups only have more than 1 members */
35 if (!list_is_last(list->next, list))
36 data->nr_groups++;
37}
38
39%}
40
41%token PE_START_EVENTS PE_START_TERMS
42%token PE_VALUE PE_VALUE_SYM_HW PE_VALUE_SYM_SW PE_RAW PE_TERM
43%token PE_EVENT_NAME
44%token PE_NAME
45%token PE_BPF_OBJECT PE_BPF_SOURCE
46%token PE_MODIFIER_EVENT PE_MODIFIER_BP
47%token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT
48%token PE_PREFIX_MEM PE_PREFIX_RAW PE_PREFIX_GROUP
49%token PE_ERROR
50%token PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT
51%token PE_ARRAY_ALL PE_ARRAY_RANGE
52%type <num> PE_VALUE
53%type <num> PE_VALUE_SYM_HW
54%type <num> PE_VALUE_SYM_SW
55%type <num> PE_RAW
56%type <num> PE_TERM
57%type <str> PE_NAME
58%type <str> PE_BPF_OBJECT
59%type <str> PE_BPF_SOURCE
60%type <str> PE_NAME_CACHE_TYPE
61%type <str> PE_NAME_CACHE_OP_RESULT
62%type <str> PE_MODIFIER_EVENT
63%type <str> PE_MODIFIER_BP
64%type <str> PE_EVENT_NAME
65%type <str> PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT
66%type <num> value_sym
67%type <head> event_config
68%type <head> opt_event_config
69%type <term> event_term
70%type <head> event_pmu
71%type <head> event_legacy_symbol
72%type <head> event_legacy_cache
73%type <head> event_legacy_mem
74%type <head> event_legacy_tracepoint
75%type <tracepoint_name> tracepoint_name
76%type <head> event_legacy_numeric
77%type <head> event_legacy_raw
78%type <head> event_bpf_file
79%type <head> event_def
80%type <head> event_mod
81%type <head> event_name
82%type <head> event
83%type <head> events
84%type <head> group_def
85%type <head> group
86%type <head> groups
87%type <array> array
88%type <array> array_term
89%type <array> array_terms
90
91%union
92{
93 char *str;
94 u64 num;
95 struct list_head *head;
96 struct parse_events_term *term;
97 struct tracepoint_name {
98 char *sys;
99 char *event;
100 } tracepoint_name;
101 struct parse_events_array array;
102}
103%%
104
105start:
106PE_START_EVENTS start_events
107|
108PE_START_TERMS start_terms
109
110start_events: groups
111{
112 struct parse_events_evlist *data = _data;
113
114 parse_events_update_lists($1, &data->list);
115}
116
117groups:
118groups ',' group
119{
120 struct list_head *list = $1;
121 struct list_head *group = $3;
122
123 parse_events_update_lists(group, list);
124 $$ = list;
125}
126|
127groups ',' event
128{
129 struct list_head *list = $1;
130 struct list_head *event = $3;
131
132 parse_events_update_lists(event, list);
133 $$ = list;
134}
135|
136group
137|
138event
139
140group:
141group_def ':' PE_MODIFIER_EVENT
142{
143 struct list_head *list = $1;
144
145 ABORT_ON(parse_events__modifier_group(list, $3));
146 $$ = list;
147}
148|
149group_def
150
151group_def:
152PE_NAME '{' events '}'
153{
154 struct list_head *list = $3;
155
156 inc_group_count(list, _data);
157 parse_events__set_leader($1, list);
158 $$ = list;
159}
160|
161'{' events '}'
162{
163 struct list_head *list = $2;
164
165 inc_group_count(list, _data);
166 parse_events__set_leader(NULL, list);
167 $$ = list;
168}
169
170events:
171events ',' event
172{
173 struct list_head *event = $3;
174 struct list_head *list = $1;
175
176 parse_events_update_lists(event, list);
177 $$ = list;
178}
179|
180event
181
182event: event_mod
183
184event_mod:
185event_name PE_MODIFIER_EVENT
186{
187 struct list_head *list = $1;
188
189 /*
190 * Apply modifier on all events added by single event definition
191 * (there could be more events added for multiple tracepoint
192 * definitions via '*?'.
193 */
194 ABORT_ON(parse_events__modifier_event(list, $2, false));
195 $$ = list;
196}
197|
198event_name
199
200event_name:
201PE_EVENT_NAME event_def
202{
203 ABORT_ON(parse_events_name($2, $1));
204 free($1);
205 $$ = $2;
206}
207|
208event_def
209
210event_def: event_pmu |
211 event_legacy_symbol |
212 event_legacy_cache sep_dc |
213 event_legacy_mem |
214 event_legacy_tracepoint sep_dc |
215 event_legacy_numeric sep_dc |
216 event_legacy_raw sep_dc |
217 event_bpf_file
218
219event_pmu:
220PE_NAME opt_event_config
221{
222 struct parse_events_evlist *data = _data;
223 struct list_head *list;
224
225 ALLOC_LIST(list);
226 ABORT_ON(parse_events_add_pmu(data, list, $1, $2));
227 parse_events_terms__delete($2);
228 $$ = list;
229}
230|
231PE_KERNEL_PMU_EVENT sep_dc
232{
233 struct parse_events_evlist *data = _data;
234 struct list_head *head;
235 struct parse_events_term *term;
236 struct list_head *list;
237
238 ALLOC_LIST(head);
239 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
240 $1, 1, &@1, NULL));
241 list_add_tail(&term->list, head);
242
243 ALLOC_LIST(list);
244 ABORT_ON(parse_events_add_pmu(data, list, "cpu", head));
245 parse_events_terms__delete(head);
246 $$ = list;
247}
248|
249PE_PMU_EVENT_PRE '-' PE_PMU_EVENT_SUF sep_dc
250{
251 struct parse_events_evlist *data = _data;
252 struct list_head *head;
253 struct parse_events_term *term;
254 struct list_head *list;
255 char pmu_name[128];
256 snprintf(&pmu_name, 128, "%s-%s", $1, $3);
257
258 ALLOC_LIST(head);
259 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
260 &pmu_name, 1, &@1, NULL));
261 list_add_tail(&term->list, head);
262
263 ALLOC_LIST(list);
264 ABORT_ON(parse_events_add_pmu(data, list, "cpu", head));
265 parse_events_terms__delete(head);
266 $$ = list;
267}
268
269value_sym:
270PE_VALUE_SYM_HW
271|
272PE_VALUE_SYM_SW
273
274event_legacy_symbol:
275value_sym '/' event_config '/'
276{
277 struct parse_events_evlist *data = _data;
278 struct list_head *list;
279 int type = $1 >> 16;
280 int config = $1 & 255;
281
282 ALLOC_LIST(list);
283 ABORT_ON(parse_events_add_numeric(data, list, type, config, $3));
284 parse_events_terms__delete($3);
285 $$ = list;
286}
287|
288value_sym sep_slash_dc
289{
290 struct parse_events_evlist *data = _data;
291 struct list_head *list;
292 int type = $1 >> 16;
293 int config = $1 & 255;
294
295 ALLOC_LIST(list);
296 ABORT_ON(parse_events_add_numeric(data, list, type, config, NULL));
297 $$ = list;
298}
299
300event_legacy_cache:
301PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT opt_event_config
302{
303 struct parse_events_evlist *data = _data;
304 struct parse_events_error *error = data->error;
305 struct list_head *list;
306
307 ALLOC_LIST(list);
308 ABORT_ON(parse_events_add_cache(list, &data->idx, $1, $3, $5, error, $6));
309 parse_events_terms__delete($6);
310 $$ = list;
311}
312|
313PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT opt_event_config
314{
315 struct parse_events_evlist *data = _data;
316 struct parse_events_error *error = data->error;
317 struct list_head *list;
318
319 ALLOC_LIST(list);
320 ABORT_ON(parse_events_add_cache(list, &data->idx, $1, $3, NULL, error, $4));
321 parse_events_terms__delete($4);
322 $$ = list;
323}
324|
325PE_NAME_CACHE_TYPE opt_event_config
326{
327 struct parse_events_evlist *data = _data;
328 struct parse_events_error *error = data->error;
329 struct list_head *list;
330
331 ALLOC_LIST(list);
332 ABORT_ON(parse_events_add_cache(list, &data->idx, $1, NULL, NULL, error, $2));
333 parse_events_terms__delete($2);
334 $$ = list;
335}
336
337event_legacy_mem:
338PE_PREFIX_MEM PE_VALUE '/' PE_VALUE ':' PE_MODIFIER_BP sep_dc
339{
340 struct parse_events_evlist *data = _data;
341 struct list_head *list;
342
343 ALLOC_LIST(list);
344 ABORT_ON(parse_events_add_breakpoint(list, &data->idx,
345 (void *) $2, $6, $4));
346 $$ = list;
347}
348|
349PE_PREFIX_MEM PE_VALUE '/' PE_VALUE sep_dc
350{
351 struct parse_events_evlist *data = _data;
352 struct list_head *list;
353
354 ALLOC_LIST(list);
355 ABORT_ON(parse_events_add_breakpoint(list, &data->idx,
356 (void *) $2, NULL, $4));
357 $$ = list;
358}
359|
360PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
361{
362 struct parse_events_evlist *data = _data;
363 struct list_head *list;
364
365 ALLOC_LIST(list);
366 ABORT_ON(parse_events_add_breakpoint(list, &data->idx,
367 (void *) $2, $4, 0));
368 $$ = list;
369}
370|
371PE_PREFIX_MEM PE_VALUE sep_dc
372{
373 struct parse_events_evlist *data = _data;
374 struct list_head *list;
375
376 ALLOC_LIST(list);
377 ABORT_ON(parse_events_add_breakpoint(list, &data->idx,
378 (void *) $2, NULL, 0));
379 $$ = list;
380}
381
382event_legacy_tracepoint:
383tracepoint_name opt_event_config
384{
385 struct parse_events_evlist *data = _data;
386 struct parse_events_error *error = data->error;
387 struct list_head *list;
388
389 ALLOC_LIST(list);
390 if (error)
391 error->idx = @1.first_column;
392
393 if (parse_events_add_tracepoint(list, &data->idx, $1.sys, $1.event,
394 error, $2))
395 return -1;
396
397 $$ = list;
398}
399
400tracepoint_name:
401PE_NAME '-' PE_NAME ':' PE_NAME
402{
403 char sys_name[128];
404 struct tracepoint_name tracepoint;
405
406 snprintf(&sys_name, 128, "%s-%s", $1, $3);
407 tracepoint.sys = &sys_name;
408 tracepoint.event = $5;
409
410 $$ = tracepoint;
411}
412|
413PE_NAME ':' PE_NAME
414{
415 struct tracepoint_name tracepoint = {$1, $3};
416
417 $$ = tracepoint;
418}
419
420event_legacy_numeric:
421PE_VALUE ':' PE_VALUE opt_event_config
422{
423 struct parse_events_evlist *data = _data;
424 struct list_head *list;
425
426 ALLOC_LIST(list);
427 ABORT_ON(parse_events_add_numeric(data, list, (u32)$1, $3, $4));
428 parse_events_terms__delete($4);
429 $$ = list;
430}
431
432event_legacy_raw:
433PE_RAW opt_event_config
434{
435 struct parse_events_evlist *data = _data;
436 struct list_head *list;
437
438 ALLOC_LIST(list);
439 ABORT_ON(parse_events_add_numeric(data, list, PERF_TYPE_RAW, $1, $2));
440 parse_events_terms__delete($2);
441 $$ = list;
442}
443
444event_bpf_file:
445PE_BPF_OBJECT opt_event_config
446{
447 struct parse_events_evlist *data = _data;
448 struct parse_events_error *error = data->error;
449 struct list_head *list;
450
451 ALLOC_LIST(list);
452 ABORT_ON(parse_events_load_bpf(data, list, $1, false, $2));
453 parse_events_terms__delete($2);
454 $$ = list;
455}
456|
457PE_BPF_SOURCE opt_event_config
458{
459 struct parse_events_evlist *data = _data;
460 struct list_head *list;
461
462 ALLOC_LIST(list);
463 ABORT_ON(parse_events_load_bpf(data, list, $1, true, $2));
464 parse_events_terms__delete($2);
465 $$ = list;
466}
467
468opt_event_config:
469'/' event_config '/'
470{
471 $$ = $2;
472}
473|
474'/' '/'
475{
476 $$ = NULL;
477}
478|
479{
480 $$ = NULL;
481}
482
483start_terms: event_config
484{
485 struct parse_events_terms *data = _data;
486 data->terms = $1;
487}
488
489event_config:
490event_config ',' event_term
491{
492 struct list_head *head = $1;
493 struct parse_events_term *term = $3;
494
495 ABORT_ON(!head);
496 list_add_tail(&term->list, head);
497 $$ = $1;
498}
499|
500event_term
501{
502 struct list_head *head = malloc(sizeof(*head));
503 struct parse_events_term *term = $1;
504
505 ABORT_ON(!head);
506 INIT_LIST_HEAD(head);
507 list_add_tail(&term->list, head);
508 $$ = head;
509}
510
511event_term:
512PE_NAME '=' PE_NAME
513{
514 struct parse_events_term *term;
515
516 ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
517 $1, $3, &@1, &@3));
518 $$ = term;
519}
520|
521PE_NAME '=' PE_VALUE
522{
523 struct parse_events_term *term;
524
525 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
526 $1, $3, &@1, &@3));
527 $$ = term;
528}
529|
530PE_NAME '=' PE_VALUE_SYM_HW
531{
532 struct parse_events_term *term;
533 int config = $3 & 255;
534
535 ABORT_ON(parse_events_term__sym_hw(&term, $1, config));
536 $$ = term;
537}
538|
539PE_NAME
540{
541 struct parse_events_term *term;
542
543 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
544 $1, 1, &@1, NULL));
545 $$ = term;
546}
547|
548PE_VALUE_SYM_HW
549{
550 struct parse_events_term *term;
551 int config = $1 & 255;
552
553 ABORT_ON(parse_events_term__sym_hw(&term, NULL, config));
554 $$ = term;
555}
556|
557PE_TERM '=' PE_NAME
558{
559 struct parse_events_term *term;
560
561 ABORT_ON(parse_events_term__str(&term, (int)$1, NULL, $3, &@1, &@3));
562 $$ = term;
563}
564|
565PE_TERM '=' PE_VALUE
566{
567 struct parse_events_term *term;
568
569 ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, $3, &@1, &@3));
570 $$ = term;
571}
572|
573PE_TERM
574{
575 struct parse_events_term *term;
576
577 ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, 1, &@1, NULL));
578 $$ = term;
579}
580|
581PE_NAME array '=' PE_NAME
582{
583 struct parse_events_term *term;
584 int i;
585
586 ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
587 $1, $4, &@1, &@4));
588
589 term->array = $2;
590 $$ = term;
591}
592|
593PE_NAME array '=' PE_VALUE
594{
595 struct parse_events_term *term;
596
597 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
598 $1, $4, &@1, &@4));
599 term->array = $2;
600 $$ = term;
601}
602
603array:
604'[' array_terms ']'
605{
606 $$ = $2;
607}
608|
609PE_ARRAY_ALL
610{
611 $$.nr_ranges = 0;
612 $$.ranges = NULL;
613}
614
615array_terms:
616array_terms ',' array_term
617{
618 struct parse_events_array new_array;
619
620 new_array.nr_ranges = $1.nr_ranges + $3.nr_ranges;
621 new_array.ranges = malloc(sizeof(new_array.ranges[0]) *
622 new_array.nr_ranges);
623 ABORT_ON(!new_array.ranges);
624 memcpy(&new_array.ranges[0], $1.ranges,
625 $1.nr_ranges * sizeof(new_array.ranges[0]));
626 memcpy(&new_array.ranges[$1.nr_ranges], $3.ranges,
627 $3.nr_ranges * sizeof(new_array.ranges[0]));
628 free($1.ranges);
629 free($3.ranges);
630 $$ = new_array;
631}
632|
633array_term
634
635array_term:
636PE_VALUE
637{
638 struct parse_events_array array;
639
640 array.nr_ranges = 1;
641 array.ranges = malloc(sizeof(array.ranges[0]));
642 ABORT_ON(!array.ranges);
643 array.ranges[0].start = $1;
644 array.ranges[0].length = 1;
645 $$ = array;
646}
647|
648PE_VALUE PE_ARRAY_RANGE PE_VALUE
649{
650 struct parse_events_array array;
651
652 ABORT_ON($3 < $1);
653 array.nr_ranges = 1;
654 array.ranges = malloc(sizeof(array.ranges[0]));
655 ABORT_ON(!array.ranges);
656 array.ranges[0].start = $1;
657 array.ranges[0].length = $3 - $1 + 1;
658 $$ = array;
659}
660
661sep_dc: ':' |
662
663sep_slash_dc: '/' | ':' |
664
665%%
666
667void parse_events_error(YYLTYPE *loc, void *data,
668 void *scanner __maybe_unused,
669 char const *msg __maybe_unused)
670{
671 parse_events_evlist_error(data, loc->last_column, "parser error");
672}