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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%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#define YYDEBUG 1
10
11#include <fnmatch.h>
12#include <stdio.h>
13#include <linux/compiler.h>
14#include <linux/types.h>
15#include <linux/zalloc.h>
16#include "pmu.h"
17#include "evsel.h"
18#include "parse-events.h"
19#include "parse-events-bison.h"
20
21void parse_events_error(YYLTYPE *loc, void *parse_state, void *scanner, char const *msg);
22
23#define ABORT_ON(val) \
24do { \
25 if (val) \
26 YYABORT; \
27} while (0)
28
29static struct list_head* alloc_list(void)
30{
31 struct list_head *list;
32
33 list = malloc(sizeof(*list));
34 if (!list)
35 return NULL;
36
37 INIT_LIST_HEAD(list);
38 return list;
39}
40
41static void free_list_evsel(struct list_head* list_evsel)
42{
43 struct evsel *evsel, *tmp;
44
45 list_for_each_entry_safe(evsel, tmp, list_evsel, core.node) {
46 list_del_init(&evsel->core.node);
47 evsel__delete(evsel);
48 }
49 free(list_evsel);
50}
51
52static void inc_group_count(struct list_head *list,
53 struct parse_events_state *parse_state)
54{
55 /* Count groups only have more than 1 members */
56 if (!list_is_last(list->next, list))
57 parse_state->nr_groups++;
58}
59
60%}
61
62%token PE_START_EVENTS PE_START_TERMS
63%token PE_VALUE PE_VALUE_SYM_HW PE_VALUE_SYM_SW PE_RAW PE_TERM
64%token PE_VALUE_SYM_TOOL
65%token PE_EVENT_NAME
66%token PE_NAME
67%token PE_BPF_OBJECT PE_BPF_SOURCE
68%token PE_MODIFIER_EVENT PE_MODIFIER_BP
69%token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT
70%token PE_PREFIX_MEM PE_PREFIX_RAW PE_PREFIX_GROUP
71%token PE_ERROR
72%token PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT PE_PMU_EVENT_FAKE
73%token PE_ARRAY_ALL PE_ARRAY_RANGE
74%token PE_DRV_CFG_TERM
75%type <num> PE_VALUE
76%type <num> PE_VALUE_SYM_HW
77%type <num> PE_VALUE_SYM_SW
78%type <num> PE_VALUE_SYM_TOOL
79%type <num> PE_RAW
80%type <num> PE_TERM
81%type <num> value_sym
82%type <str> PE_NAME
83%type <str> PE_BPF_OBJECT
84%type <str> PE_BPF_SOURCE
85%type <str> PE_NAME_CACHE_TYPE
86%type <str> PE_NAME_CACHE_OP_RESULT
87%type <str> PE_MODIFIER_EVENT
88%type <str> PE_MODIFIER_BP
89%type <str> PE_EVENT_NAME
90%type <str> PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT PE_PMU_EVENT_FAKE
91%type <str> PE_DRV_CFG_TERM
92%type <str> event_pmu_name
93%destructor { free ($$); } <str>
94%type <term> event_term
95%destructor { parse_events_term__delete ($$); } <term>
96%type <list_terms> event_config
97%type <list_terms> opt_event_config
98%type <list_terms> opt_pmu_config
99%destructor { parse_events_terms__delete ($$); } <list_terms>
100%type <list_evsel> event_pmu
101%type <list_evsel> event_legacy_symbol
102%type <list_evsel> event_legacy_cache
103%type <list_evsel> event_legacy_mem
104%type <list_evsel> event_legacy_tracepoint
105%type <list_evsel> event_legacy_numeric
106%type <list_evsel> event_legacy_raw
107%type <list_evsel> event_bpf_file
108%type <list_evsel> event_def
109%type <list_evsel> event_mod
110%type <list_evsel> event_name
111%type <list_evsel> event
112%type <list_evsel> events
113%type <list_evsel> group_def
114%type <list_evsel> group
115%type <list_evsel> groups
116%destructor { free_list_evsel ($$); } <list_evsel>
117%type <tracepoint_name> tracepoint_name
118%destructor { free ($$.sys); free ($$.event); } <tracepoint_name>
119%type <array> array
120%type <array> array_term
121%type <array> array_terms
122%destructor { free ($$.ranges); } <array>
123
124%union
125{
126 char *str;
127 u64 num;
128 struct list_head *list_evsel;
129 struct list_head *list_terms;
130 struct parse_events_term *term;
131 struct tracepoint_name {
132 char *sys;
133 char *event;
134 } tracepoint_name;
135 struct parse_events_array array;
136}
137%%
138
139start:
140PE_START_EVENTS start_events
141|
142PE_START_TERMS start_terms
143
144start_events: groups
145{
146 struct parse_events_state *parse_state = _parse_state;
147
148 /* frees $1 */
149 parse_events_update_lists($1, &parse_state->list);
150}
151
152groups:
153groups ',' group
154{
155 struct list_head *list = $1;
156 struct list_head *group = $3;
157
158 /* frees $3 */
159 parse_events_update_lists(group, list);
160 $$ = list;
161}
162|
163groups ',' event
164{
165 struct list_head *list = $1;
166 struct list_head *event = $3;
167
168 /* frees $3 */
169 parse_events_update_lists(event, list);
170 $$ = list;
171}
172|
173group
174|
175event
176
177group:
178group_def ':' PE_MODIFIER_EVENT
179{
180 struct list_head *list = $1;
181 int err;
182
183 err = parse_events__modifier_group(list, $3);
184 free($3);
185 if (err) {
186 free_list_evsel(list);
187 YYABORT;
188 }
189 $$ = list;
190}
191|
192group_def
193
194group_def:
195PE_NAME '{' events '}'
196{
197 struct list_head *list = $3;
198
199 inc_group_count(list, _parse_state);
200 parse_events__set_leader($1, list, _parse_state);
201 free($1);
202 $$ = list;
203}
204|
205'{' events '}'
206{
207 struct list_head *list = $2;
208
209 inc_group_count(list, _parse_state);
210 parse_events__set_leader(NULL, list, _parse_state);
211 $$ = list;
212}
213
214events:
215events ',' event
216{
217 struct list_head *event = $3;
218 struct list_head *list = $1;
219
220 /* frees $3 */
221 parse_events_update_lists(event, list);
222 $$ = list;
223}
224|
225event
226
227event: event_mod
228
229event_mod:
230event_name PE_MODIFIER_EVENT
231{
232 struct list_head *list = $1;
233 int err;
234
235 /*
236 * Apply modifier on all events added by single event definition
237 * (there could be more events added for multiple tracepoint
238 * definitions via '*?'.
239 */
240 err = parse_events__modifier_event(list, $2, false);
241 free($2);
242 if (err) {
243 free_list_evsel(list);
244 YYABORT;
245 }
246 $$ = list;
247}
248|
249event_name
250
251event_name:
252PE_EVENT_NAME event_def
253{
254 int err;
255
256 err = parse_events_name($2, $1);
257 free($1);
258 if (err) {
259 free_list_evsel($2);
260 YYABORT;
261 }
262 $$ = $2;
263}
264|
265event_def
266
267event_def: event_pmu |
268 event_legacy_symbol |
269 event_legacy_cache sep_dc |
270 event_legacy_mem |
271 event_legacy_tracepoint sep_dc |
272 event_legacy_numeric sep_dc |
273 event_legacy_raw sep_dc |
274 event_bpf_file
275
276event_pmu_name:
277PE_NAME | PE_PMU_EVENT_PRE
278
279event_pmu:
280event_pmu_name opt_pmu_config
281{
282 struct parse_events_state *parse_state = _parse_state;
283 struct parse_events_error *error = parse_state->error;
284 struct list_head *list = NULL, *orig_terms = NULL, *terms= NULL;
285 char *pattern = NULL;
286
287#define CLEANUP_YYABORT \
288 do { \
289 parse_events_terms__delete($2); \
290 parse_events_terms__delete(orig_terms); \
291 free(list); \
292 free($1); \
293 free(pattern); \
294 YYABORT; \
295 } while(0)
296
297 if (parse_events_copy_term_list($2, &orig_terms))
298 CLEANUP_YYABORT;
299
300 if (error)
301 error->idx = @1.first_column;
302
303 list = alloc_list();
304 if (!list)
305 CLEANUP_YYABORT;
306 if (parse_events_add_pmu(_parse_state, list, $1, $2, false, false)) {
307 struct perf_pmu *pmu = NULL;
308 int ok = 0;
309
310 if (asprintf(&pattern, "%s*", $1) < 0)
311 CLEANUP_YYABORT;
312
313 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
314 char *name = pmu->name;
315
316 if (!strncmp(name, "uncore_", 7) &&
317 strncmp($1, "uncore_", 7))
318 name += 7;
319 if (!perf_pmu__match(pattern, name, $1)) {
320 if (parse_events_copy_term_list(orig_terms, &terms))
321 CLEANUP_YYABORT;
322 if (!parse_events_add_pmu(_parse_state, list, pmu->name, terms, true, false))
323 ok++;
324 parse_events_terms__delete(terms);
325 }
326 }
327
328 if (!ok)
329 CLEANUP_YYABORT;
330 }
331 parse_events_terms__delete($2);
332 parse_events_terms__delete(orig_terms);
333 free(pattern);
334 free($1);
335 $$ = list;
336#undef CLEANUP_YYABORT
337}
338|
339PE_KERNEL_PMU_EVENT sep_dc
340{
341 struct list_head *list;
342 int err;
343
344 err = parse_events_multi_pmu_add(_parse_state, $1, &list);
345 free($1);
346 if (err < 0)
347 YYABORT;
348 $$ = list;
349}
350|
351PE_PMU_EVENT_PRE '-' PE_PMU_EVENT_SUF sep_dc
352{
353 struct list_head *list;
354 char pmu_name[128];
355
356 snprintf(pmu_name, sizeof(pmu_name), "%s-%s", $1, $3);
357 free($1);
358 free($3);
359 if (parse_events_multi_pmu_add(_parse_state, pmu_name, &list) < 0)
360 YYABORT;
361 $$ = list;
362}
363|
364PE_PMU_EVENT_FAKE sep_dc
365{
366 struct list_head *list;
367 int err;
368
369 list = alloc_list();
370 if (!list)
371 YYABORT;
372
373 err = parse_events_add_pmu(_parse_state, list, $1, NULL, false, false);
374 free($1);
375 if (err < 0) {
376 free(list);
377 YYABORT;
378 }
379 $$ = list;
380}
381|
382PE_PMU_EVENT_FAKE opt_pmu_config
383{
384 struct list_head *list;
385 int err;
386
387 list = alloc_list();
388 if (!list)
389 YYABORT;
390
391 err = parse_events_add_pmu(_parse_state, list, $1, $2, false, false);
392 free($1);
393 parse_events_terms__delete($2);
394 if (err < 0) {
395 free(list);
396 YYABORT;
397 }
398 $$ = list;
399}
400
401value_sym:
402PE_VALUE_SYM_HW
403|
404PE_VALUE_SYM_SW
405
406event_legacy_symbol:
407value_sym '/' event_config '/'
408{
409 struct list_head *list;
410 int type = $1 >> 16;
411 int config = $1 & 255;
412 int err;
413
414 list = alloc_list();
415 ABORT_ON(!list);
416 err = parse_events_add_numeric(_parse_state, list, type, config, $3);
417 parse_events_terms__delete($3);
418 if (err) {
419 free_list_evsel(list);
420 YYABORT;
421 }
422 $$ = list;
423}
424|
425value_sym sep_slash_slash_dc
426{
427 struct list_head *list;
428 int type = $1 >> 16;
429 int config = $1 & 255;
430
431 list = alloc_list();
432 ABORT_ON(!list);
433 ABORT_ON(parse_events_add_numeric(_parse_state, list, type, config, NULL));
434 $$ = list;
435}
436|
437PE_VALUE_SYM_TOOL sep_slash_slash_dc
438{
439 struct list_head *list;
440
441 list = alloc_list();
442 ABORT_ON(!list);
443 ABORT_ON(parse_events_add_tool(_parse_state, list, $1));
444 $$ = list;
445}
446
447event_legacy_cache:
448PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT opt_event_config
449{
450 struct parse_events_state *parse_state = _parse_state;
451 struct parse_events_error *error = parse_state->error;
452 struct list_head *list;
453 int err;
454
455 list = alloc_list();
456 ABORT_ON(!list);
457 err = parse_events_add_cache(list, &parse_state->idx, $1, $3, $5, error, $6,
458 parse_state);
459 parse_events_terms__delete($6);
460 free($1);
461 free($3);
462 free($5);
463 if (err) {
464 free_list_evsel(list);
465 YYABORT;
466 }
467 $$ = list;
468}
469|
470PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT opt_event_config
471{
472 struct parse_events_state *parse_state = _parse_state;
473 struct parse_events_error *error = parse_state->error;
474 struct list_head *list;
475 int err;
476
477 list = alloc_list();
478 ABORT_ON(!list);
479 err = parse_events_add_cache(list, &parse_state->idx, $1, $3, NULL, error, $4,
480 parse_state);
481 parse_events_terms__delete($4);
482 free($1);
483 free($3);
484 if (err) {
485 free_list_evsel(list);
486 YYABORT;
487 }
488 $$ = list;
489}
490|
491PE_NAME_CACHE_TYPE opt_event_config
492{
493 struct parse_events_state *parse_state = _parse_state;
494 struct parse_events_error *error = parse_state->error;
495 struct list_head *list;
496 int err;
497
498 list = alloc_list();
499 ABORT_ON(!list);
500 err = parse_events_add_cache(list, &parse_state->idx, $1, NULL, NULL, error, $2,
501 parse_state);
502 parse_events_terms__delete($2);
503 free($1);
504 if (err) {
505 free_list_evsel(list);
506 YYABORT;
507 }
508 $$ = list;
509}
510
511event_legacy_mem:
512PE_PREFIX_MEM PE_VALUE '/' PE_VALUE ':' PE_MODIFIER_BP sep_dc
513{
514 struct parse_events_state *parse_state = _parse_state;
515 struct list_head *list;
516 int err;
517
518 list = alloc_list();
519 ABORT_ON(!list);
520 err = parse_events_add_breakpoint(list, &parse_state->idx,
521 $2, $6, $4);
522 free($6);
523 if (err) {
524 free(list);
525 YYABORT;
526 }
527 $$ = list;
528}
529|
530PE_PREFIX_MEM PE_VALUE '/' PE_VALUE sep_dc
531{
532 struct parse_events_state *parse_state = _parse_state;
533 struct list_head *list;
534
535 list = alloc_list();
536 ABORT_ON(!list);
537 if (parse_events_add_breakpoint(list, &parse_state->idx,
538 $2, NULL, $4)) {
539 free(list);
540 YYABORT;
541 }
542 $$ = list;
543}
544|
545PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
546{
547 struct parse_events_state *parse_state = _parse_state;
548 struct list_head *list;
549 int err;
550
551 list = alloc_list();
552 ABORT_ON(!list);
553 err = parse_events_add_breakpoint(list, &parse_state->idx,
554 $2, $4, 0);
555 free($4);
556 if (err) {
557 free(list);
558 YYABORT;
559 }
560 $$ = list;
561}
562|
563PE_PREFIX_MEM PE_VALUE sep_dc
564{
565 struct parse_events_state *parse_state = _parse_state;
566 struct list_head *list;
567
568 list = alloc_list();
569 ABORT_ON(!list);
570 if (parse_events_add_breakpoint(list, &parse_state->idx,
571 $2, NULL, 0)) {
572 free(list);
573 YYABORT;
574 }
575 $$ = list;
576}
577
578event_legacy_tracepoint:
579tracepoint_name opt_event_config
580{
581 struct parse_events_state *parse_state = _parse_state;
582 struct parse_events_error *error = parse_state->error;
583 struct list_head *list;
584 int err;
585
586 list = alloc_list();
587 ABORT_ON(!list);
588 if (error)
589 error->idx = @1.first_column;
590
591 err = parse_events_add_tracepoint(list, &parse_state->idx, $1.sys, $1.event,
592 error, $2);
593
594 parse_events_terms__delete($2);
595 free($1.sys);
596 free($1.event);
597 if (err) {
598 free(list);
599 YYABORT;
600 }
601 $$ = list;
602}
603
604tracepoint_name:
605PE_NAME '-' PE_NAME ':' PE_NAME
606{
607 struct tracepoint_name tracepoint;
608
609 ABORT_ON(asprintf(&tracepoint.sys, "%s-%s", $1, $3) < 0);
610 tracepoint.event = $5;
611 free($1);
612 free($3);
613 $$ = tracepoint;
614}
615|
616PE_NAME ':' PE_NAME
617{
618 struct tracepoint_name tracepoint = {$1, $3};
619
620 $$ = tracepoint;
621}
622
623event_legacy_numeric:
624PE_VALUE ':' PE_VALUE opt_event_config
625{
626 struct list_head *list;
627 int err;
628
629 list = alloc_list();
630 ABORT_ON(!list);
631 err = parse_events_add_numeric(_parse_state, list, (u32)$1, $3, $4);
632 parse_events_terms__delete($4);
633 if (err) {
634 free(list);
635 YYABORT;
636 }
637 $$ = list;
638}
639
640event_legacy_raw:
641PE_RAW opt_event_config
642{
643 struct list_head *list;
644 int err;
645
646 list = alloc_list();
647 ABORT_ON(!list);
648 err = parse_events_add_numeric(_parse_state, list, PERF_TYPE_RAW, $1, $2);
649 parse_events_terms__delete($2);
650 if (err) {
651 free(list);
652 YYABORT;
653 }
654 $$ = list;
655}
656
657event_bpf_file:
658PE_BPF_OBJECT opt_event_config
659{
660 struct parse_events_state *parse_state = _parse_state;
661 struct list_head *list;
662 int err;
663
664 list = alloc_list();
665 ABORT_ON(!list);
666 err = parse_events_load_bpf(parse_state, list, $1, false, $2);
667 parse_events_terms__delete($2);
668 free($1);
669 if (err) {
670 free(list);
671 YYABORT;
672 }
673 $$ = list;
674}
675|
676PE_BPF_SOURCE opt_event_config
677{
678 struct list_head *list;
679 int err;
680
681 list = alloc_list();
682 ABORT_ON(!list);
683 err = parse_events_load_bpf(_parse_state, list, $1, true, $2);
684 parse_events_terms__delete($2);
685 if (err) {
686 free(list);
687 YYABORT;
688 }
689 $$ = list;
690}
691
692opt_event_config:
693'/' event_config '/'
694{
695 $$ = $2;
696}
697|
698'/' '/'
699{
700 $$ = NULL;
701}
702|
703{
704 $$ = NULL;
705}
706
707opt_pmu_config:
708'/' event_config '/'
709{
710 $$ = $2;
711}
712|
713'/' '/'
714{
715 $$ = NULL;
716}
717
718start_terms: event_config
719{
720 struct parse_events_state *parse_state = _parse_state;
721 if (parse_state->terms) {
722 parse_events_terms__delete ($1);
723 YYABORT;
724 }
725 parse_state->terms = $1;
726}
727
728event_config:
729event_config ',' event_term
730{
731 struct list_head *head = $1;
732 struct parse_events_term *term = $3;
733
734 if (!head) {
735 parse_events_term__delete(term);
736 YYABORT;
737 }
738 list_add_tail(&term->list, head);
739 $$ = $1;
740}
741|
742event_term
743{
744 struct list_head *head = malloc(sizeof(*head));
745 struct parse_events_term *term = $1;
746
747 ABORT_ON(!head);
748 INIT_LIST_HEAD(head);
749 list_add_tail(&term->list, head);
750 $$ = head;
751}
752
753event_term:
754PE_RAW
755{
756 struct parse_events_term *term;
757
758 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_CONFIG,
759 NULL, $1, false, &@1, NULL));
760 $$ = term;
761}
762|
763PE_NAME '=' PE_NAME
764{
765 struct parse_events_term *term;
766
767 if (parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
768 $1, $3, &@1, &@3)) {
769 free($1);
770 free($3);
771 YYABORT;
772 }
773 $$ = term;
774}
775|
776PE_NAME '=' PE_VALUE
777{
778 struct parse_events_term *term;
779
780 if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
781 $1, $3, false, &@1, &@3)) {
782 free($1);
783 YYABORT;
784 }
785 $$ = term;
786}
787|
788PE_NAME '=' PE_VALUE_SYM_HW
789{
790 struct parse_events_term *term;
791 int config = $3 & 255;
792
793 if (parse_events_term__sym_hw(&term, $1, config)) {
794 free($1);
795 YYABORT;
796 }
797 $$ = term;
798}
799|
800PE_NAME
801{
802 struct parse_events_term *term;
803
804 if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
805 $1, 1, true, &@1, NULL)) {
806 free($1);
807 YYABORT;
808 }
809 $$ = term;
810}
811|
812PE_VALUE_SYM_HW
813{
814 struct parse_events_term *term;
815 int config = $1 & 255;
816
817 ABORT_ON(parse_events_term__sym_hw(&term, NULL, config));
818 $$ = term;
819}
820|
821PE_TERM '=' PE_NAME
822{
823 struct parse_events_term *term;
824
825 if (parse_events_term__str(&term, (int)$1, NULL, $3, &@1, &@3)) {
826 free($3);
827 YYABORT;
828 }
829 $$ = term;
830}
831|
832PE_TERM '=' PE_VALUE
833{
834 struct parse_events_term *term;
835
836 ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, $3, false, &@1, &@3));
837 $$ = term;
838}
839|
840PE_TERM
841{
842 struct parse_events_term *term;
843
844 ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, 1, true, &@1, NULL));
845 $$ = term;
846}
847|
848PE_NAME array '=' PE_NAME
849{
850 struct parse_events_term *term;
851
852 if (parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
853 $1, $4, &@1, &@4)) {
854 free($1);
855 free($4);
856 free($2.ranges);
857 YYABORT;
858 }
859 term->array = $2;
860 $$ = term;
861}
862|
863PE_NAME array '=' PE_VALUE
864{
865 struct parse_events_term *term;
866
867 if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
868 $1, $4, false, &@1, &@4)) {
869 free($1);
870 free($2.ranges);
871 YYABORT;
872 }
873 term->array = $2;
874 $$ = term;
875}
876|
877PE_DRV_CFG_TERM
878{
879 struct parse_events_term *term;
880 char *config = strdup($1);
881
882 ABORT_ON(!config);
883 if (parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_DRV_CFG,
884 config, $1, &@1, NULL)) {
885 free($1);
886 free(config);
887 YYABORT;
888 }
889 $$ = term;
890}
891
892array:
893'[' array_terms ']'
894{
895 $$ = $2;
896}
897|
898PE_ARRAY_ALL
899{
900 $$.nr_ranges = 0;
901 $$.ranges = NULL;
902}
903
904array_terms:
905array_terms ',' array_term
906{
907 struct parse_events_array new_array;
908
909 new_array.nr_ranges = $1.nr_ranges + $3.nr_ranges;
910 new_array.ranges = realloc($1.ranges,
911 sizeof(new_array.ranges[0]) *
912 new_array.nr_ranges);
913 ABORT_ON(!new_array.ranges);
914 memcpy(&new_array.ranges[$1.nr_ranges], $3.ranges,
915 $3.nr_ranges * sizeof(new_array.ranges[0]));
916 free($3.ranges);
917 $$ = new_array;
918}
919|
920array_term
921
922array_term:
923PE_VALUE
924{
925 struct parse_events_array array;
926
927 array.nr_ranges = 1;
928 array.ranges = malloc(sizeof(array.ranges[0]));
929 ABORT_ON(!array.ranges);
930 array.ranges[0].start = $1;
931 array.ranges[0].length = 1;
932 $$ = array;
933}
934|
935PE_VALUE PE_ARRAY_RANGE PE_VALUE
936{
937 struct parse_events_array array;
938
939 ABORT_ON($3 < $1);
940 array.nr_ranges = 1;
941 array.ranges = malloc(sizeof(array.ranges[0]));
942 ABORT_ON(!array.ranges);
943 array.ranges[0].start = $1;
944 array.ranges[0].length = $3 - $1 + 1;
945 $$ = array;
946}
947
948sep_dc: ':' |
949
950sep_slash_slash_dc: '/' '/' | ':' |
951
952%%
953
954void parse_events_error(YYLTYPE *loc, void *parse_state,
955 void *scanner __maybe_unused,
956 char const *msg __maybe_unused)
957{
958 parse_events_evlist_error(parse_state, loc->last_column, "parser error");
959}