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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_VALUE_SYM_TOOL
60%token PE_EVENT_NAME
61%token PE_RAW PE_NAME
62%token PE_MODIFIER_EVENT PE_MODIFIER_BP PE_BP_COLON PE_BP_SLASH
63%token PE_LEGACY_CACHE
64%token PE_PREFIX_MEM
65%token PE_ERROR
66%token PE_DRV_CFG_TERM
67%token PE_TERM_HW
68%type <num> PE_VALUE
69%type <num> PE_VALUE_SYM_HW
70%type <num> PE_VALUE_SYM_SW
71%type <num> PE_VALUE_SYM_TOOL
72%type <term_type> PE_TERM
73%type <num> value_sym
74%type <str> PE_RAW
75%type <str> PE_NAME
76%type <str> PE_LEGACY_CACHE
77%type <str> PE_MODIFIER_EVENT
78%type <str> PE_MODIFIER_BP
79%type <str> PE_EVENT_NAME
80%type <str> PE_DRV_CFG_TERM
81%type <str> name_or_raw
82%destructor { free ($$); } <str>
83%type <term> event_term
84%destructor { parse_events_term__delete ($$); } <term>
85%type <list_terms> event_config
86%type <list_terms> opt_event_config
87%type <list_terms> opt_pmu_config
88%destructor { parse_events_terms__delete ($$); } <list_terms>
89%type <list_evsel> event_pmu
90%type <list_evsel> event_legacy_symbol
91%type <list_evsel> event_legacy_cache
92%type <list_evsel> event_legacy_mem
93%type <list_evsel> event_legacy_tracepoint
94%type <list_evsel> event_legacy_numeric
95%type <list_evsel> event_legacy_raw
96%type <list_evsel> event_def
97%type <list_evsel> event_mod
98%type <list_evsel> event_name
99%type <list_evsel> event
100%type <list_evsel> events
101%type <list_evsel> group_def
102%type <list_evsel> group
103%type <list_evsel> groups
104%destructor { free_list_evsel ($$); } <list_evsel>
105%type <tracepoint_name> tracepoint_name
106%destructor { free ($$.sys); free ($$.event); } <tracepoint_name>
107%type <hardware_term> PE_TERM_HW
108%destructor { free ($$.str); } <hardware_term>
109
110%union
111{
112 char *str;
113 u64 num;
114 enum parse_events__term_type term_type;
115 struct list_head *list_evsel;
116 struct parse_events_terms *list_terms;
117 struct parse_events_term *term;
118 struct tracepoint_name {
119 char *sys;
120 char *event;
121 } tracepoint_name;
122 struct hardware_term {
123 char *str;
124 u64 num;
125 } hardware_term;
126}
127%%
128
129start:
130PE_START_EVENTS start_events
131|
132PE_START_TERMS start_terms
133
134start_events: groups
135{
136 struct parse_events_state *parse_state = _parse_state;
137
138 /* frees $1 */
139 parse_events_update_lists($1, &parse_state->list);
140}
141
142groups:
143groups ',' group
144{
145 struct list_head *list = $1;
146 struct list_head *group = $3;
147
148 /* frees $3 */
149 parse_events_update_lists(group, list);
150 $$ = list;
151}
152|
153groups ',' event
154{
155 struct list_head *list = $1;
156 struct list_head *event = $3;
157
158 /* frees $3 */
159 parse_events_update_lists(event, list);
160 $$ = list;
161}
162|
163group
164|
165event
166
167group:
168group_def ':' PE_MODIFIER_EVENT
169{
170 struct list_head *list = $1;
171 int err;
172
173 err = parse_events__modifier_group(list, $3);
174 free($3);
175 if (err) {
176 struct parse_events_state *parse_state = _parse_state;
177 struct parse_events_error *error = parse_state->error;
178
179 parse_events_error__handle(error, @3.first_column,
180 strdup("Bad modifier"), NULL);
181 free_list_evsel(list);
182 YYABORT;
183 }
184 $$ = list;
185}
186|
187group_def
188
189group_def:
190PE_NAME '{' events '}'
191{
192 struct list_head *list = $3;
193
194 /* Takes ownership of $1. */
195 parse_events__set_leader($1, list);
196 $$ = list;
197}
198|
199'{' events '}'
200{
201 struct list_head *list = $2;
202
203 parse_events__set_leader(NULL, list);
204 $$ = list;
205}
206
207events:
208events ',' event
209{
210 struct list_head *event = $3;
211 struct list_head *list = $1;
212
213 /* frees $3 */
214 parse_events_update_lists(event, list);
215 $$ = list;
216}
217|
218event
219
220event: event_mod
221
222event_mod:
223event_name PE_MODIFIER_EVENT
224{
225 struct list_head *list = $1;
226 int err;
227
228 /*
229 * Apply modifier on all events added by single event definition
230 * (there could be more events added for multiple tracepoint
231 * definitions via '*?'.
232 */
233 err = parse_events__modifier_event(list, $2, false);
234 free($2);
235 if (err) {
236 struct parse_events_state *parse_state = _parse_state;
237 struct parse_events_error *error = parse_state->error;
238
239 parse_events_error__handle(error, @2.first_column,
240 strdup("Bad modifier"), NULL);
241 free_list_evsel(list);
242 YYABORT;
243 }
244 $$ = list;
245}
246|
247event_name
248
249event_name:
250PE_EVENT_NAME event_def
251{
252 int err;
253
254 err = parse_events_name($2, $1);
255 free($1);
256 if (err) {
257 free_list_evsel($2);
258 YYNOMEM;
259 }
260 $$ = $2;
261}
262|
263event_def
264
265event_def: event_pmu |
266 event_legacy_symbol |
267 event_legacy_cache sep_dc |
268 event_legacy_mem sep_dc |
269 event_legacy_tracepoint sep_dc |
270 event_legacy_numeric sep_dc |
271 event_legacy_raw sep_dc
272
273event_pmu:
274PE_NAME opt_pmu_config
275{
276 struct parse_events_state *parse_state = _parse_state;
277 /* List of created evsels. */
278 struct list_head *list = NULL;
279 char *pattern = NULL;
280
281#define CLEANUP \
282 do { \
283 parse_events_terms__delete($2); \
284 free(list); \
285 free($1); \
286 free(pattern); \
287 } while(0)
288
289 list = alloc_list();
290 if (!list) {
291 CLEANUP;
292 YYNOMEM;
293 }
294 /* Attempt to add to list assuming $1 is a PMU name. */
295 if (parse_events_add_pmu(parse_state, list, $1, $2, /*auto_merge_stats=*/false, &@1)) {
296 struct perf_pmu *pmu = NULL;
297 int ok = 0;
298
299 /* Failure to add, try wildcard expansion of $1 as a PMU name. */
300 if (asprintf(&pattern, "%s*", $1) < 0) {
301 CLEANUP;
302 YYNOMEM;
303 }
304
305 while ((pmu = perf_pmus__scan(pmu)) != NULL) {
306 const char *name = pmu->name;
307
308 if (parse_events__filter_pmu(parse_state, pmu))
309 continue;
310
311 if (!strncmp(name, "uncore_", 7) &&
312 strncmp($1, "uncore_", 7))
313 name += 7;
314 if (!perf_pmu__match(pattern, name, $1) ||
315 !perf_pmu__match(pattern, pmu->alias_name, $1)) {
316 bool auto_merge_stats = perf_pmu__auto_merge_stats(pmu);
317
318 if (!parse_events_add_pmu(parse_state, list, pmu->name, $2,
319 auto_merge_stats, &@1)) {
320 ok++;
321 parse_state->wild_card_pmus = true;
322 }
323 }
324 }
325
326 if (!ok) {
327 /* Failure to add, assume $1 is an event name. */
328 zfree(&list);
329 ok = !parse_events_multi_pmu_add(parse_state, $1, $2, &list, &@1);
330 }
331 if (!ok) {
332 struct parse_events_error *error = parse_state->error;
333 char *help;
334
335 if (asprintf(&help, "Unable to find PMU or event on a PMU of '%s'", $1) < 0)
336 help = NULL;
337 parse_events_error__handle(error, @1.first_column,
338 strdup("Bad event or PMU"),
339 help);
340 CLEANUP;
341 YYABORT;
342 }
343 }
344 $$ = list;
345 list = NULL;
346 CLEANUP;
347#undef CLEANUP
348}
349|
350PE_NAME sep_dc
351{
352 struct list_head *list;
353 int err;
354
355 err = parse_events_multi_pmu_add(_parse_state, $1, NULL, &list, &@1);
356 if (err < 0) {
357 struct parse_events_state *parse_state = _parse_state;
358 struct parse_events_error *error = parse_state->error;
359 char *help;
360
361 if (asprintf(&help, "Unable to find event on a PMU of '%s'", $1) < 0)
362 help = NULL;
363 parse_events_error__handle(error, @1.first_column, strdup("Bad event name"), help);
364 free($1);
365 PE_ABORT(err);
366 }
367 free($1);
368 $$ = list;
369}
370
371value_sym:
372PE_VALUE_SYM_HW
373|
374PE_VALUE_SYM_SW
375
376event_legacy_symbol:
377value_sym '/' event_config '/'
378{
379 struct list_head *list;
380 int type = $1 >> 16;
381 int config = $1 & 255;
382 int err;
383 bool wildcard = (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE);
384
385 list = alloc_list();
386 if (!list)
387 YYNOMEM;
388 err = parse_events_add_numeric(_parse_state, list, type, config, $3, wildcard);
389 parse_events_terms__delete($3);
390 if (err) {
391 free_list_evsel(list);
392 PE_ABORT(err);
393 }
394 $$ = list;
395}
396|
397value_sym sep_slash_slash_dc
398{
399 struct list_head *list;
400 int type = $1 >> 16;
401 int config = $1 & 255;
402 bool wildcard = (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE);
403 int err;
404
405 list = alloc_list();
406 if (!list)
407 YYNOMEM;
408 err = parse_events_add_numeric(_parse_state, list, type, config, /*head_config=*/NULL, wildcard);
409 if (err)
410 PE_ABORT(err);
411 $$ = list;
412}
413|
414PE_VALUE_SYM_TOOL sep_slash_slash_dc
415{
416 struct list_head *list;
417 int err;
418
419 list = alloc_list();
420 if (!list)
421 YYNOMEM;
422 err = parse_events_add_tool(_parse_state, list, $1);
423 if (err)
424 YYNOMEM;
425 $$ = list;
426}
427
428event_legacy_cache:
429PE_LEGACY_CACHE opt_event_config
430{
431 struct parse_events_state *parse_state = _parse_state;
432 struct list_head *list;
433 int err;
434
435 list = alloc_list();
436 if (!list)
437 YYNOMEM;
438
439 err = parse_events_add_cache(list, &parse_state->idx, $1, parse_state, $2);
440
441 parse_events_terms__delete($2);
442 free($1);
443 if (err) {
444 free_list_evsel(list);
445 PE_ABORT(err);
446 }
447 $$ = list;
448}
449
450event_legacy_mem:
451PE_PREFIX_MEM PE_VALUE PE_BP_SLASH PE_VALUE PE_BP_COLON PE_MODIFIER_BP opt_event_config
452{
453 struct list_head *list;
454 int err;
455
456 list = alloc_list();
457 if (!list)
458 YYNOMEM;
459
460 err = parse_events_add_breakpoint(_parse_state, list,
461 $2, $6, $4, $7);
462 parse_events_terms__delete($7);
463 free($6);
464 if (err) {
465 free(list);
466 PE_ABORT(err);
467 }
468 $$ = list;
469}
470|
471PE_PREFIX_MEM PE_VALUE PE_BP_SLASH PE_VALUE opt_event_config
472{
473 struct list_head *list;
474 int err;
475
476 list = alloc_list();
477 if (!list)
478 YYNOMEM;
479
480 err = parse_events_add_breakpoint(_parse_state, list,
481 $2, NULL, $4, $5);
482 parse_events_terms__delete($5);
483 if (err) {
484 free(list);
485 PE_ABORT(err);
486 }
487 $$ = list;
488}
489|
490PE_PREFIX_MEM PE_VALUE PE_BP_COLON PE_MODIFIER_BP opt_event_config
491{
492 struct list_head *list;
493 int err;
494
495 list = alloc_list();
496 if (!list)
497 YYNOMEM;
498
499 err = parse_events_add_breakpoint(_parse_state, list,
500 $2, $4, 0, $5);
501 parse_events_terms__delete($5);
502 free($4);
503 if (err) {
504 free(list);
505 PE_ABORT(err);
506 }
507 $$ = list;
508}
509|
510PE_PREFIX_MEM PE_VALUE opt_event_config
511{
512 struct list_head *list;
513 int err;
514
515 list = alloc_list();
516 if (!list)
517 YYNOMEM;
518 err = parse_events_add_breakpoint(_parse_state, list,
519 $2, NULL, 0, $3);
520 parse_events_terms__delete($3);
521 if (err) {
522 free(list);
523 PE_ABORT(err);
524 }
525 $$ = list;
526}
527
528event_legacy_tracepoint:
529tracepoint_name opt_event_config
530{
531 struct parse_events_state *parse_state = _parse_state;
532 struct parse_events_error *error = parse_state->error;
533 struct list_head *list;
534 int err;
535
536 list = alloc_list();
537 if (!list)
538 YYNOMEM;
539 if (error)
540 error->idx = @1.first_column;
541
542 err = parse_events_add_tracepoint(list, &parse_state->idx, $1.sys, $1.event,
543 error, $2, &@1);
544
545 parse_events_terms__delete($2);
546 free($1.sys);
547 free($1.event);
548 if (err) {
549 free(list);
550 PE_ABORT(err);
551 }
552 $$ = list;
553}
554
555tracepoint_name:
556PE_NAME ':' PE_NAME
557{
558 struct tracepoint_name tracepoint = {$1, $3};
559
560 $$ = tracepoint;
561}
562
563event_legacy_numeric:
564PE_VALUE ':' PE_VALUE opt_event_config
565{
566 struct list_head *list;
567 int err;
568
569 list = alloc_list();
570 if (!list)
571 YYNOMEM;
572 err = parse_events_add_numeric(_parse_state, list, (u32)$1, $3, $4,
573 /*wildcard=*/false);
574 parse_events_terms__delete($4);
575 if (err) {
576 free(list);
577 PE_ABORT(err);
578 }
579 $$ = list;
580}
581
582event_legacy_raw:
583PE_RAW opt_event_config
584{
585 struct list_head *list;
586 int err;
587 u64 num;
588
589 list = alloc_list();
590 if (!list)
591 YYNOMEM;
592 errno = 0;
593 num = strtoull($1 + 1, NULL, 16);
594 /* Given the lexer will only give [a-fA-F0-9]+ a failure here should be impossible. */
595 if (errno)
596 YYABORT;
597 free($1);
598 err = parse_events_add_numeric(_parse_state, list, PERF_TYPE_RAW, num, $2,
599 /*wildcard=*/false);
600 parse_events_terms__delete($2);
601 if (err) {
602 free(list);
603 PE_ABORT(err);
604 }
605 $$ = list;
606}
607
608opt_event_config:
609'/' event_config '/'
610{
611 $$ = $2;
612}
613|
614'/' '/'
615{
616 $$ = NULL;
617}
618|
619{
620 $$ = NULL;
621}
622
623opt_pmu_config:
624'/' event_config '/'
625{
626 $$ = $2;
627}
628|
629'/' '/'
630{
631 $$ = NULL;
632}
633
634start_terms: event_config
635{
636 struct parse_events_state *parse_state = _parse_state;
637 if (parse_state->terms) {
638 parse_events_terms__delete ($1);
639 YYABORT;
640 }
641 parse_state->terms = $1;
642}
643
644event_config:
645event_config ',' event_term
646{
647 struct parse_events_terms *head = $1;
648 struct parse_events_term *term = $3;
649
650 if (!head) {
651 parse_events_term__delete(term);
652 YYABORT;
653 }
654 list_add_tail(&term->list, &head->terms);
655 $$ = $1;
656}
657|
658event_term
659{
660 struct parse_events_terms *head = malloc(sizeof(*head));
661 struct parse_events_term *term = $1;
662
663 if (!head)
664 YYNOMEM;
665 parse_events_terms__init(head);
666 list_add_tail(&term->list, &head->terms);
667 $$ = head;
668}
669
670name_or_raw: PE_RAW | PE_NAME | PE_LEGACY_CACHE
671
672event_term:
673PE_RAW
674{
675 struct parse_events_term *term;
676 int err = parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_RAW,
677 strdup("raw"), $1, &@1, &@1);
678
679 if (err) {
680 free($1);
681 PE_ABORT(err);
682 }
683 $$ = term;
684}
685|
686name_or_raw '=' name_or_raw
687{
688 struct parse_events_term *term;
689 int err = parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER, $1, $3, &@1, &@3);
690
691 if (err) {
692 free($1);
693 free($3);
694 PE_ABORT(err);
695 }
696 $$ = term;
697}
698|
699name_or_raw '=' PE_VALUE
700{
701 struct parse_events_term *term;
702 int err = parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
703 $1, $3, /*novalue=*/false, &@1, &@3);
704
705 if (err) {
706 free($1);
707 PE_ABORT(err);
708 }
709 $$ = term;
710}
711|
712name_or_raw '=' PE_TERM_HW
713{
714 struct parse_events_term *term;
715 int err = parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
716 $1, $3.str, &@1, &@3);
717
718 if (err) {
719 free($1);
720 free($3.str);
721 PE_ABORT(err);
722 }
723 $$ = term;
724}
725|
726PE_LEGACY_CACHE
727{
728 struct parse_events_term *term;
729 int err = parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE,
730 $1, /*num=*/1, /*novalue=*/true, &@1, /*loc_val=*/NULL);
731
732 if (err) {
733 free($1);
734 PE_ABORT(err);
735 }
736 $$ = term;
737}
738|
739PE_NAME
740{
741 struct parse_events_term *term;
742 int err = parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
743 $1, /*num=*/1, /*novalue=*/true, &@1, /*loc_val=*/NULL);
744
745 if (err) {
746 free($1);
747 PE_ABORT(err);
748 }
749 $$ = term;
750}
751|
752PE_TERM_HW
753{
754 struct parse_events_term *term;
755 int err = parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_HARDWARE,
756 $1.str, $1.num & 255, /*novalue=*/false,
757 &@1, /*loc_val=*/NULL);
758
759 if (err) {
760 free($1.str);
761 PE_ABORT(err);
762 }
763 $$ = term;
764}
765|
766PE_TERM '=' name_or_raw
767{
768 struct parse_events_term *term;
769 int err = parse_events_term__str(&term, $1, /*config=*/NULL, $3, &@1, &@3);
770
771 if (err) {
772 free($3);
773 PE_ABORT(err);
774 }
775 $$ = term;
776}
777|
778PE_TERM '=' PE_TERM_HW
779{
780 struct parse_events_term *term;
781 int err = parse_events_term__str(&term, $1, /*config=*/NULL, $3.str, &@1, &@3);
782
783 if (err) {
784 free($3.str);
785 PE_ABORT(err);
786 }
787 $$ = term;
788}
789|
790PE_TERM '=' PE_TERM
791{
792 struct parse_events_term *term;
793 int err = parse_events_term__term(&term, $1, $3, &@1, &@3);
794
795 if (err)
796 PE_ABORT(err);
797
798 $$ = term;
799}
800|
801PE_TERM '=' PE_VALUE
802{
803 struct parse_events_term *term;
804 int err = parse_events_term__num(&term, $1,
805 /*config=*/NULL, $3, /*novalue=*/false,
806 &@1, &@3);
807
808 if (err)
809 PE_ABORT(err);
810
811 $$ = term;
812}
813|
814PE_TERM
815{
816 struct parse_events_term *term;
817 int err = parse_events_term__num(&term, $1,
818 /*config=*/NULL, /*num=*/1, /*novalue=*/true,
819 &@1, /*loc_val=*/NULL);
820
821 if (err)
822 PE_ABORT(err);
823
824 $$ = term;
825}
826|
827PE_DRV_CFG_TERM
828{
829 struct parse_events_term *term;
830 char *config = strdup($1);
831 int err;
832
833 if (!config)
834 YYNOMEM;
835 err = parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_DRV_CFG, config, $1, &@1, NULL);
836 if (err) {
837 free($1);
838 free(config);
839 PE_ABORT(err);
840 }
841 $$ = term;
842}
843
844sep_dc: ':' |
845
846sep_slash_slash_dc: '/' '/' | ':' |
847
848%%
849
850void parse_events_error(YYLTYPE *loc, void *parse_state,
851 void *scanner __maybe_unused,
852 char const *msg __maybe_unused)
853{
854 parse_events_evlist_error(parse_state, loc->last_column, "parser error");
855}
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 <linux/compiler.h>
13#include <linux/list.h>
14#include <linux/types.h>
15#include "util.h"
16#include "pmu.h"
17#include "debug.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
29#define ALLOC_LIST(list) \
30do { \
31 list = malloc(sizeof(*list)); \
32 ABORT_ON(!list); \
33 INIT_LIST_HEAD(list); \
34} while (0)
35
36static void inc_group_count(struct list_head *list,
37 struct parse_events_state *parse_state)
38{
39 /* Count groups only have more than 1 members */
40 if (!list_is_last(list->next, list))
41 parse_state->nr_groups++;
42}
43
44%}
45
46%token PE_START_EVENTS PE_START_TERMS
47%token PE_VALUE PE_VALUE_SYM_HW PE_VALUE_SYM_SW PE_RAW PE_TERM
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_RAW
62%type <num> PE_TERM
63%type <str> PE_NAME
64%type <str> PE_BPF_OBJECT
65%type <str> PE_BPF_SOURCE
66%type <str> PE_NAME_CACHE_TYPE
67%type <str> PE_NAME_CACHE_OP_RESULT
68%type <str> PE_MODIFIER_EVENT
69%type <str> PE_MODIFIER_BP
70%type <str> PE_EVENT_NAME
71%type <str> PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT
72%type <str> PE_DRV_CFG_TERM
73%type <num> value_sym
74%type <head> event_config
75%type <head> opt_event_config
76%type <term> event_term
77%type <head> event_pmu
78%type <head> event_legacy_symbol
79%type <head> event_legacy_cache
80%type <head> event_legacy_mem
81%type <head> event_legacy_tracepoint
82%type <tracepoint_name> tracepoint_name
83%type <head> event_legacy_numeric
84%type <head> event_legacy_raw
85%type <head> event_bpf_file
86%type <head> event_def
87%type <head> event_mod
88%type <head> event_name
89%type <head> event
90%type <head> events
91%type <head> group_def
92%type <head> group
93%type <head> groups
94%type <array> array
95%type <array> array_term
96%type <array> array_terms
97
98%union
99{
100 char *str;
101 u64 num;
102 struct list_head *head;
103 struct parse_events_term *term;
104 struct tracepoint_name {
105 char *sys;
106 char *event;
107 } tracepoint_name;
108 struct parse_events_array array;
109}
110%%
111
112start:
113PE_START_EVENTS start_events
114|
115PE_START_TERMS start_terms
116
117start_events: groups
118{
119 struct parse_events_state *parse_state = _parse_state;
120
121 parse_events_update_lists($1, &parse_state->list);
122}
123
124groups:
125groups ',' group
126{
127 struct list_head *list = $1;
128 struct list_head *group = $3;
129
130 parse_events_update_lists(group, list);
131 $$ = list;
132}
133|
134groups ',' event
135{
136 struct list_head *list = $1;
137 struct list_head *event = $3;
138
139 parse_events_update_lists(event, list);
140 $$ = list;
141}
142|
143group
144|
145event
146
147group:
148group_def ':' PE_MODIFIER_EVENT
149{
150 struct list_head *list = $1;
151
152 ABORT_ON(parse_events__modifier_group(list, $3));
153 $$ = list;
154}
155|
156group_def
157
158group_def:
159PE_NAME '{' events '}'
160{
161 struct list_head *list = $3;
162
163 inc_group_count(list, _parse_state);
164 parse_events__set_leader($1, list, _parse_state);
165 $$ = list;
166}
167|
168'{' events '}'
169{
170 struct list_head *list = $2;
171
172 inc_group_count(list, _parse_state);
173 parse_events__set_leader(NULL, list, _parse_state);
174 $$ = list;
175}
176
177events:
178events ',' event
179{
180 struct list_head *event = $3;
181 struct list_head *list = $1;
182
183 parse_events_update_lists(event, list);
184 $$ = list;
185}
186|
187event
188
189event: event_mod
190
191event_mod:
192event_name PE_MODIFIER_EVENT
193{
194 struct list_head *list = $1;
195
196 /*
197 * Apply modifier on all events added by single event definition
198 * (there could be more events added for multiple tracepoint
199 * definitions via '*?'.
200 */
201 ABORT_ON(parse_events__modifier_event(list, $2, false));
202 $$ = list;
203}
204|
205event_name
206
207event_name:
208PE_EVENT_NAME event_def
209{
210 ABORT_ON(parse_events_name($2, $1));
211 free($1);
212 $$ = $2;
213}
214|
215event_def
216
217event_def: event_pmu |
218 event_legacy_symbol |
219 event_legacy_cache sep_dc |
220 event_legacy_mem |
221 event_legacy_tracepoint sep_dc |
222 event_legacy_numeric sep_dc |
223 event_legacy_raw sep_dc |
224 event_bpf_file
225
226event_pmu:
227PE_NAME opt_event_config
228{
229 struct list_head *list, *orig_terms, *terms;
230
231 if (parse_events_copy_term_list($2, &orig_terms))
232 YYABORT;
233
234 ALLOC_LIST(list);
235 if (parse_events_add_pmu(_parse_state, list, $1, $2, false, false)) {
236 struct perf_pmu *pmu = NULL;
237 int ok = 0;
238 char *pattern;
239
240 if (asprintf(&pattern, "%s*", $1) < 0)
241 YYABORT;
242
243 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
244 char *name = pmu->name;
245
246 if (!strncmp(name, "uncore_", 7) &&
247 strncmp($1, "uncore_", 7))
248 name += 7;
249 if (!fnmatch(pattern, name, 0)) {
250 if (parse_events_copy_term_list(orig_terms, &terms)) {
251 free(pattern);
252 YYABORT;
253 }
254 if (!parse_events_add_pmu(_parse_state, list, pmu->name, terms, true, false))
255 ok++;
256 parse_events_terms__delete(terms);
257 }
258 }
259
260 free(pattern);
261
262 if (!ok)
263 YYABORT;
264 }
265 parse_events_terms__delete($2);
266 parse_events_terms__delete(orig_terms);
267 $$ = list;
268}
269|
270PE_KERNEL_PMU_EVENT sep_dc
271{
272 struct list_head *list;
273
274 if (parse_events_multi_pmu_add(_parse_state, $1, &list) < 0)
275 YYABORT;
276 $$ = list;
277}
278|
279PE_PMU_EVENT_PRE '-' PE_PMU_EVENT_SUF sep_dc
280{
281 struct list_head *list;
282 char pmu_name[128];
283
284 snprintf(&pmu_name, 128, "%s-%s", $1, $3);
285 if (parse_events_multi_pmu_add(_parse_state, pmu_name, &list) < 0)
286 YYABORT;
287 $$ = list;
288}
289
290value_sym:
291PE_VALUE_SYM_HW
292|
293PE_VALUE_SYM_SW
294
295event_legacy_symbol:
296value_sym '/' event_config '/'
297{
298 struct list_head *list;
299 int type = $1 >> 16;
300 int config = $1 & 255;
301
302 ALLOC_LIST(list);
303 ABORT_ON(parse_events_add_numeric(_parse_state, list, type, config, $3));
304 parse_events_terms__delete($3);
305 $$ = list;
306}
307|
308value_sym sep_slash_dc
309{
310 struct list_head *list;
311 int type = $1 >> 16;
312 int config = $1 & 255;
313
314 ALLOC_LIST(list);
315 ABORT_ON(parse_events_add_numeric(_parse_state, list, type, config, NULL));
316 $$ = list;
317}
318
319event_legacy_cache:
320PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT opt_event_config
321{
322 struct parse_events_state *parse_state = _parse_state;
323 struct parse_events_error *error = parse_state->error;
324 struct list_head *list;
325
326 ALLOC_LIST(list);
327 ABORT_ON(parse_events_add_cache(list, &parse_state->idx, $1, $3, $5, error, $6));
328 parse_events_terms__delete($6);
329 $$ = list;
330}
331|
332PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT opt_event_config
333{
334 struct parse_events_state *parse_state = _parse_state;
335 struct parse_events_error *error = parse_state->error;
336 struct list_head *list;
337
338 ALLOC_LIST(list);
339 ABORT_ON(parse_events_add_cache(list, &parse_state->idx, $1, $3, NULL, error, $4));
340 parse_events_terms__delete($4);
341 $$ = list;
342}
343|
344PE_NAME_CACHE_TYPE opt_event_config
345{
346 struct parse_events_state *parse_state = _parse_state;
347 struct parse_events_error *error = parse_state->error;
348 struct list_head *list;
349
350 ALLOC_LIST(list);
351 ABORT_ON(parse_events_add_cache(list, &parse_state->idx, $1, NULL, NULL, error, $2));
352 parse_events_terms__delete($2);
353 $$ = list;
354}
355
356event_legacy_mem:
357PE_PREFIX_MEM PE_VALUE '/' PE_VALUE ':' PE_MODIFIER_BP sep_dc
358{
359 struct parse_events_state *parse_state = _parse_state;
360 struct list_head *list;
361
362 ALLOC_LIST(list);
363 ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
364 (void *) $2, $6, $4));
365 $$ = list;
366}
367|
368PE_PREFIX_MEM PE_VALUE '/' PE_VALUE sep_dc
369{
370 struct parse_events_state *parse_state = _parse_state;
371 struct list_head *list;
372
373 ALLOC_LIST(list);
374 ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
375 (void *) $2, NULL, $4));
376 $$ = list;
377}
378|
379PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
380{
381 struct parse_events_state *parse_state = _parse_state;
382 struct list_head *list;
383
384 ALLOC_LIST(list);
385 ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
386 (void *) $2, $4, 0));
387 $$ = list;
388}
389|
390PE_PREFIX_MEM PE_VALUE sep_dc
391{
392 struct parse_events_state *parse_state = _parse_state;
393 struct list_head *list;
394
395 ALLOC_LIST(list);
396 ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
397 (void *) $2, NULL, 0));
398 $$ = list;
399}
400
401event_legacy_tracepoint:
402tracepoint_name opt_event_config
403{
404 struct parse_events_state *parse_state = _parse_state;
405 struct parse_events_error *error = parse_state->error;
406 struct list_head *list;
407
408 ALLOC_LIST(list);
409 if (error)
410 error->idx = @1.first_column;
411
412 if (parse_events_add_tracepoint(list, &parse_state->idx, $1.sys, $1.event,
413 error, $2))
414 return -1;
415
416 $$ = list;
417}
418
419tracepoint_name:
420PE_NAME '-' PE_NAME ':' PE_NAME
421{
422 char sys_name[128];
423 struct tracepoint_name tracepoint;
424
425 snprintf(&sys_name, 128, "%s-%s", $1, $3);
426 tracepoint.sys = &sys_name;
427 tracepoint.event = $5;
428
429 $$ = tracepoint;
430}
431|
432PE_NAME ':' PE_NAME
433{
434 struct tracepoint_name tracepoint = {$1, $3};
435
436 $$ = tracepoint;
437}
438
439event_legacy_numeric:
440PE_VALUE ':' PE_VALUE opt_event_config
441{
442 struct list_head *list;
443
444 ALLOC_LIST(list);
445 ABORT_ON(parse_events_add_numeric(_parse_state, list, (u32)$1, $3, $4));
446 parse_events_terms__delete($4);
447 $$ = list;
448}
449
450event_legacy_raw:
451PE_RAW opt_event_config
452{
453 struct list_head *list;
454
455 ALLOC_LIST(list);
456 ABORT_ON(parse_events_add_numeric(_parse_state, list, PERF_TYPE_RAW, $1, $2));
457 parse_events_terms__delete($2);
458 $$ = list;
459}
460
461event_bpf_file:
462PE_BPF_OBJECT opt_event_config
463{
464 struct parse_events_state *parse_state = _parse_state;
465 struct parse_events_error *error = parse_state->error;
466 struct list_head *list;
467
468 ALLOC_LIST(list);
469 ABORT_ON(parse_events_load_bpf(parse_state, list, $1, false, $2));
470 parse_events_terms__delete($2);
471 $$ = list;
472}
473|
474PE_BPF_SOURCE opt_event_config
475{
476 struct list_head *list;
477
478 ALLOC_LIST(list);
479 ABORT_ON(parse_events_load_bpf(_parse_state, list, $1, true, $2));
480 parse_events_terms__delete($2);
481 $$ = list;
482}
483
484opt_event_config:
485'/' event_config '/'
486{
487 $$ = $2;
488}
489|
490'/' '/'
491{
492 $$ = NULL;
493}
494|
495{
496 $$ = NULL;
497}
498
499start_terms: event_config
500{
501 struct parse_events_state *parse_state = _parse_state;
502 parse_state->terms = $1;
503}
504
505event_config:
506event_config ',' event_term
507{
508 struct list_head *head = $1;
509 struct parse_events_term *term = $3;
510
511 ABORT_ON(!head);
512 list_add_tail(&term->list, head);
513 $$ = $1;
514}
515|
516event_term
517{
518 struct list_head *head = malloc(sizeof(*head));
519 struct parse_events_term *term = $1;
520
521 ABORT_ON(!head);
522 INIT_LIST_HEAD(head);
523 list_add_tail(&term->list, head);
524 $$ = head;
525}
526
527event_term:
528PE_NAME '=' PE_NAME
529{
530 struct parse_events_term *term;
531
532 ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
533 $1, $3, &@1, &@3));
534 $$ = term;
535}
536|
537PE_NAME '=' PE_VALUE
538{
539 struct parse_events_term *term;
540
541 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
542 $1, $3, false, &@1, &@3));
543 $$ = term;
544}
545|
546PE_NAME '=' PE_VALUE_SYM_HW
547{
548 struct parse_events_term *term;
549 int config = $3 & 255;
550
551 ABORT_ON(parse_events_term__sym_hw(&term, $1, config));
552 $$ = term;
553}
554|
555PE_NAME
556{
557 struct parse_events_term *term;
558
559 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
560 $1, 1, true, &@1, NULL));
561 $$ = term;
562}
563|
564PE_VALUE_SYM_HW
565{
566 struct parse_events_term *term;
567 int config = $1 & 255;
568
569 ABORT_ON(parse_events_term__sym_hw(&term, NULL, config));
570 $$ = term;
571}
572|
573PE_TERM '=' PE_NAME
574{
575 struct parse_events_term *term;
576
577 ABORT_ON(parse_events_term__str(&term, (int)$1, NULL, $3, &@1, &@3));
578 $$ = term;
579}
580|
581PE_TERM '=' PE_VALUE
582{
583 struct parse_events_term *term;
584
585 ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, $3, false, &@1, &@3));
586 $$ = term;
587}
588|
589PE_TERM
590{
591 struct parse_events_term *term;
592
593 ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, 1, true, &@1, NULL));
594 $$ = term;
595}
596|
597PE_NAME array '=' PE_NAME
598{
599 struct parse_events_term *term;
600 int i;
601
602 ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
603 $1, $4, &@1, &@4));
604
605 term->array = $2;
606 $$ = term;
607}
608|
609PE_NAME array '=' PE_VALUE
610{
611 struct parse_events_term *term;
612
613 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
614 $1, $4, false, &@1, &@4));
615 term->array = $2;
616 $$ = term;
617}
618|
619PE_DRV_CFG_TERM
620{
621 struct parse_events_term *term;
622
623 ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_DRV_CFG,
624 $1, $1, &@1, NULL));
625 $$ = term;
626}
627
628array:
629'[' array_terms ']'
630{
631 $$ = $2;
632}
633|
634PE_ARRAY_ALL
635{
636 $$.nr_ranges = 0;
637 $$.ranges = NULL;
638}
639
640array_terms:
641array_terms ',' array_term
642{
643 struct parse_events_array new_array;
644
645 new_array.nr_ranges = $1.nr_ranges + $3.nr_ranges;
646 new_array.ranges = malloc(sizeof(new_array.ranges[0]) *
647 new_array.nr_ranges);
648 ABORT_ON(!new_array.ranges);
649 memcpy(&new_array.ranges[0], $1.ranges,
650 $1.nr_ranges * sizeof(new_array.ranges[0]));
651 memcpy(&new_array.ranges[$1.nr_ranges], $3.ranges,
652 $3.nr_ranges * sizeof(new_array.ranges[0]));
653 free($1.ranges);
654 free($3.ranges);
655 $$ = new_array;
656}
657|
658array_term
659
660array_term:
661PE_VALUE
662{
663 struct parse_events_array array;
664
665 array.nr_ranges = 1;
666 array.ranges = malloc(sizeof(array.ranges[0]));
667 ABORT_ON(!array.ranges);
668 array.ranges[0].start = $1;
669 array.ranges[0].length = 1;
670 $$ = array;
671}
672|
673PE_VALUE PE_ARRAY_RANGE PE_VALUE
674{
675 struct parse_events_array array;
676
677 ABORT_ON($3 < $1);
678 array.nr_ranges = 1;
679 array.ranges = malloc(sizeof(array.ranges[0]));
680 ABORT_ON(!array.ranges);
681 array.ranges[0].start = $1;
682 array.ranges[0].length = $3 - $1 + 1;
683 $$ = array;
684}
685
686sep_dc: ':' |
687
688sep_slash_dc: '/' | ':' |
689
690%%
691
692void parse_events_error(YYLTYPE *loc, void *parse_state,
693 void *scanner __maybe_unused,
694 char const *msg __maybe_unused)
695{
696 parse_events_evlist_error(parse_state, loc->last_column, "parser error");
697}