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review.trustedfirmware.org / hafnium / third_party / linux.git / 0f672f6c0b52b7b0700b0915c72b540721af4465 / . / tools / perf / util / parse-events.y
blob: 48126ae4cd13f098ed707a698cdb881485f7b5e0 [file] [log] [blame]
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]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>
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]12#include <stdio.h>
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]13#include <linux/compiler.h>
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]14#include <linux/types.h>
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]15#include "pmu.h"
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]16#include "evsel.h"
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]17#include "parse-events.h"
18#include "parse-events-bison.h"
19
20void parse_events_error(YYLTYPE *loc, void *parse_state, void *scanner, char const *msg);
21
22#define ABORT_ON(val) \
23do { \
24 if (val) \
25 YYABORT; \
26} while (0)
27
28#define ALLOC_LIST(list) \
29do { \
30 list = malloc(sizeof(*list)); \
31 ABORT_ON(!list); \
32 INIT_LIST_HEAD(list); \
33} while (0)
34
35static void inc_group_count(struct list_head *list,
36 struct parse_events_state *parse_state)
37{
38 /* Count groups only have more than 1 members */
39 if (!list_is_last(list->next, list))
40 parse_state->nr_groups++;
41}
42
43%}
44
45%token PE_START_EVENTS PE_START_TERMS
46%token PE_VALUE PE_VALUE_SYM_HW PE_VALUE_SYM_SW PE_RAW PE_TERM
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]47%token PE_VALUE_SYM_TOOL
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]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
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]61%type <num> PE_VALUE_SYM_TOOL
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]62%type <num> PE_RAW
63%type <num> PE_TERM
64%type <str> PE_NAME
65%type <str> PE_BPF_OBJECT
66%type <str> PE_BPF_SOURCE
67%type <str> PE_NAME_CACHE_TYPE
68%type <str> PE_NAME_CACHE_OP_RESULT
69%type <str> PE_MODIFIER_EVENT
70%type <str> PE_MODIFIER_BP
71%type <str> PE_EVENT_NAME
72%type <str> PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT
73%type <str> PE_DRV_CFG_TERM
74%type <num> value_sym
75%type <head> event_config
76%type <head> opt_event_config
77%type <head> opt_pmu_config
78%type <term> event_term
79%type <head> event_pmu
80%type <head> event_legacy_symbol
81%type <head> event_legacy_cache
82%type <head> event_legacy_mem
83%type <head> event_legacy_tracepoint
84%type <tracepoint_name> tracepoint_name
85%type <head> event_legacy_numeric
86%type <head> event_legacy_raw
87%type <head> event_bpf_file
88%type <head> event_def
89%type <head> event_mod
90%type <head> event_name
91%type <head> event
92%type <head> events
93%type <head> group_def
94%type <head> group
95%type <head> groups
96%type <array> array
97%type <array> array_term
98%type <array> array_terms
99
100%union
101{
102 char *str;
103 u64 num;
104 struct list_head *head;
105 struct parse_events_term *term;
106 struct tracepoint_name {
107 char *sys;
108 char *event;
109 } tracepoint_name;
110 struct parse_events_array array;
111}
112%%
113
114start:
115PE_START_EVENTS start_events
116|
117PE_START_TERMS start_terms
118
119start_events: groups
120{
121 struct parse_events_state *parse_state = _parse_state;
122
123 parse_events_update_lists($1, &parse_state->list);
124}
125
126groups:
127groups ',' group
128{
129 struct list_head *list = $1;
130 struct list_head *group = $3;
131
132 parse_events_update_lists(group, list);
133 $$ = list;
134}
135|
136groups ',' event
137{
138 struct list_head *list = $1;
139 struct list_head *event = $3;
140
141 parse_events_update_lists(event, list);
142 $$ = list;
143}
144|
145group
146|
147event
148
149group:
150group_def ':' PE_MODIFIER_EVENT
151{
152 struct list_head *list = $1;
153
154 ABORT_ON(parse_events__modifier_group(list, $3));
155 $$ = list;
156}
157|
158group_def
159
160group_def:
161PE_NAME '{' events '}'
162{
163 struct list_head *list = $3;
164
165 inc_group_count(list, _parse_state);
166 parse_events__set_leader($1, list, _parse_state);
167 $$ = list;
168}
169|
170'{' events '}'
171{
172 struct list_head *list = $2;
173
174 inc_group_count(list, _parse_state);
175 parse_events__set_leader(NULL, list, _parse_state);
176 $$ = list;
177}
178
179events:
180events ',' event
181{
182 struct list_head *event = $3;
183 struct list_head *list = $1;
184
185 parse_events_update_lists(event, list);
186 $$ = list;
187}
188|
189event
190
191event: event_mod
192
193event_mod:
194event_name PE_MODIFIER_EVENT
195{
196 struct list_head *list = $1;
197
198 /*
199 * Apply modifier on all events added by single event definition
200 * (there could be more events added for multiple tracepoint
201 * definitions via '*?'.
202 */
203 ABORT_ON(parse_events__modifier_event(list, $2, false));
204 $$ = list;
205}
206|
207event_name
208
209event_name:
210PE_EVENT_NAME event_def
211{
212 ABORT_ON(parse_events_name($2, $1));
213 free($1);
214 $$ = $2;
215}
216|
217event_def
218
219event_def: event_pmu |
220 event_legacy_symbol |
221 event_legacy_cache sep_dc |
222 event_legacy_mem |
223 event_legacy_tracepoint sep_dc |
224 event_legacy_numeric sep_dc |
225 event_legacy_raw sep_dc |
226 event_bpf_file
227
228event_pmu:
229PE_NAME opt_pmu_config
230{
231 struct parse_events_state *parse_state = _parse_state;
232 struct parse_events_error *error = parse_state->error;
233 struct list_head *list, *orig_terms, *terms;
234
235 if (parse_events_copy_term_list($2, &orig_terms))
236 YYABORT;
237
238 if (error)
239 error->idx = @1.first_column;
240
241 ALLOC_LIST(list);
242 if (parse_events_add_pmu(_parse_state, list, $1, $2, false, false)) {
243 struct perf_pmu *pmu = NULL;
244 int ok = 0;
245 char *pattern;
246
247 if (asprintf(&pattern, "%s*", $1) < 0)
248 YYABORT;
249
250 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
251 char *name = pmu->name;
252
253 if (!strncmp(name, "uncore_", 7) &&
254 strncmp($1, "uncore_", 7))
255 name += 7;
256 if (!fnmatch(pattern, name, 0)) {
257 if (parse_events_copy_term_list(orig_terms, &terms)) {
258 free(pattern);
259 YYABORT;
260 }
261 if (!parse_events_add_pmu(_parse_state, list, pmu->name, terms, true, false))
262 ok++;
263 parse_events_terms__delete(terms);
264 }
265 }
266
267 free(pattern);
268
269 if (!ok)
270 YYABORT;
271 }
272 parse_events_terms__delete($2);
273 parse_events_terms__delete(orig_terms);
274 $$ = list;
275}
276|
277PE_KERNEL_PMU_EVENT sep_dc
278{
279 struct list_head *list;
280
281 if (parse_events_multi_pmu_add(_parse_state, $1, &list) < 0)
282 YYABORT;
283 $$ = list;
284}
285|
286PE_PMU_EVENT_PRE '-' PE_PMU_EVENT_SUF sep_dc
287{
288 struct list_head *list;
289 char pmu_name[128];
290
291 snprintf(&pmu_name, 128, "%s-%s", $1, $3);
292 if (parse_events_multi_pmu_add(_parse_state, pmu_name, &list) < 0)
293 YYABORT;
294 $$ = list;
295}
296
297value_sym:
298PE_VALUE_SYM_HW
299|
300PE_VALUE_SYM_SW
301
302event_legacy_symbol:
303value_sym '/' event_config '/'
304{
305 struct list_head *list;
306 int type = $1 >> 16;
307 int config = $1 & 255;
308
309 ALLOC_LIST(list);
310 ABORT_ON(parse_events_add_numeric(_parse_state, list, type, config, $3));
311 parse_events_terms__delete($3);
312 $$ = list;
313}
314|
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]315value_sym sep_slash_slash_dc
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]316{
317 struct list_head *list;
318 int type = $1 >> 16;
319 int config = $1 & 255;
320
321 ALLOC_LIST(list);
322 ABORT_ON(parse_events_add_numeric(_parse_state, list, type, config, NULL));
323 $$ = list;
324}
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]325|
326PE_VALUE_SYM_TOOL sep_slash_slash_dc
327{
328 struct list_head *list;
329
330 ALLOC_LIST(list);
331 ABORT_ON(parse_events_add_tool(_parse_state, list, $1));
332 $$ = list;
333}
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]334
335event_legacy_cache:
336PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT opt_event_config
337{
338 struct parse_events_state *parse_state = _parse_state;
339 struct parse_events_error *error = parse_state->error;
340 struct list_head *list;
341
342 ALLOC_LIST(list);
343 ABORT_ON(parse_events_add_cache(list, &parse_state->idx, $1, $3, $5, error, $6));
344 parse_events_terms__delete($6);
345 $$ = list;
346}
347|
348PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT opt_event_config
349{
350 struct parse_events_state *parse_state = _parse_state;
351 struct parse_events_error *error = parse_state->error;
352 struct list_head *list;
353
354 ALLOC_LIST(list);
355 ABORT_ON(parse_events_add_cache(list, &parse_state->idx, $1, $3, NULL, error, $4));
356 parse_events_terms__delete($4);
357 $$ = list;
358}
359|
360PE_NAME_CACHE_TYPE opt_event_config
361{
362 struct parse_events_state *parse_state = _parse_state;
363 struct parse_events_error *error = parse_state->error;
364 struct list_head *list;
365
366 ALLOC_LIST(list);
367 ABORT_ON(parse_events_add_cache(list, &parse_state->idx, $1, NULL, NULL, error, $2));
368 parse_events_terms__delete($2);
369 $$ = list;
370}
371
372event_legacy_mem:
373PE_PREFIX_MEM PE_VALUE '/' PE_VALUE ':' PE_MODIFIER_BP sep_dc
374{
375 struct parse_events_state *parse_state = _parse_state;
376 struct list_head *list;
377
378 ALLOC_LIST(list);
379 ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
380 (void *) $2, $6, $4));
381 $$ = list;
382}
383|
384PE_PREFIX_MEM PE_VALUE '/' PE_VALUE sep_dc
385{
386 struct parse_events_state *parse_state = _parse_state;
387 struct list_head *list;
388
389 ALLOC_LIST(list);
390 ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
391 (void *) $2, NULL, $4));
392 $$ = list;
393}
394|
395PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
396{
397 struct parse_events_state *parse_state = _parse_state;
398 struct list_head *list;
399
400 ALLOC_LIST(list);
401 ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
402 (void *) $2, $4, 0));
403 $$ = list;
404}
405|
406PE_PREFIX_MEM PE_VALUE sep_dc
407{
408 struct parse_events_state *parse_state = _parse_state;
409 struct list_head *list;
410
411 ALLOC_LIST(list);
412 ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
413 (void *) $2, NULL, 0));
414 $$ = list;
415}
416
417event_legacy_tracepoint:
418tracepoint_name opt_event_config
419{
420 struct parse_events_state *parse_state = _parse_state;
421 struct parse_events_error *error = parse_state->error;
422 struct list_head *list;
423
424 ALLOC_LIST(list);
425 if (error)
426 error->idx = @1.first_column;
427
428 if (parse_events_add_tracepoint(list, &parse_state->idx, $1.sys, $1.event,
429 error, $2))
430 return -1;
431
432 $$ = list;
433}
434
435tracepoint_name:
436PE_NAME '-' PE_NAME ':' PE_NAME
437{
438 char sys_name[128];
439 struct tracepoint_name tracepoint;
440
441 snprintf(&sys_name, 128, "%s-%s", $1, $3);
442 tracepoint.sys = &sys_name;
443 tracepoint.event = $5;
444
445 $$ = tracepoint;
446}
447|
448PE_NAME ':' PE_NAME
449{
450 struct tracepoint_name tracepoint = {$1, $3};
451
452 $$ = tracepoint;
453}
454
455event_legacy_numeric:
456PE_VALUE ':' PE_VALUE opt_event_config
457{
458 struct list_head *list;
459
460 ALLOC_LIST(list);
461 ABORT_ON(parse_events_add_numeric(_parse_state, list, (u32)$1, $3, $4));
462 parse_events_terms__delete($4);
463 $$ = list;
464}
465
466event_legacy_raw:
467PE_RAW opt_event_config
468{
469 struct list_head *list;
470
471 ALLOC_LIST(list);
472 ABORT_ON(parse_events_add_numeric(_parse_state, list, PERF_TYPE_RAW, $1, $2));
473 parse_events_terms__delete($2);
474 $$ = list;
475}
476
477event_bpf_file:
478PE_BPF_OBJECT opt_event_config
479{
480 struct parse_events_state *parse_state = _parse_state;
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]481 struct list_head *list;
482
483 ALLOC_LIST(list);
484 ABORT_ON(parse_events_load_bpf(parse_state, list, $1, false, $2));
485 parse_events_terms__delete($2);
486 $$ = list;
487}
488|
489PE_BPF_SOURCE opt_event_config
490{
491 struct list_head *list;
492
493 ALLOC_LIST(list);
494 ABORT_ON(parse_events_load_bpf(_parse_state, list, $1, true, $2));
495 parse_events_terms__delete($2);
496 $$ = list;
497}
498
499opt_event_config:
500'/' event_config '/'
501{
502 $$ = $2;
503}
504|
505'/' '/'
506{
507 $$ = NULL;
508}
509|
510{
511 $$ = NULL;
512}
513
514opt_pmu_config:
515'/' event_config '/'
516{
517 $$ = $2;
518}
519|
520'/' '/'
521{
522 $$ = NULL;
523}
524
525start_terms: event_config
526{
527 struct parse_events_state *parse_state = _parse_state;
528 parse_state->terms = $1;
529}
530
531event_config:
532event_config ',' event_term
533{
534 struct list_head *head = $1;
535 struct parse_events_term *term = $3;
536
537 ABORT_ON(!head);
538 list_add_tail(&term->list, head);
539 $$ = $1;
540}
541|
542event_term
543{
544 struct list_head *head = malloc(sizeof(*head));
545 struct parse_events_term *term = $1;
546
547 ABORT_ON(!head);
548 INIT_LIST_HEAD(head);
549 list_add_tail(&term->list, head);
550 $$ = head;
551}
552
553event_term:
554PE_NAME '=' PE_NAME
555{
556 struct parse_events_term *term;
557
558 ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
559 $1, $3, &@1, &@3));
560 $$ = term;
561}
562|
563PE_NAME '=' PE_VALUE
564{
565 struct parse_events_term *term;
566
567 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
568 $1, $3, false, &@1, &@3));
569 $$ = term;
570}
571|
572PE_NAME '=' PE_VALUE_SYM_HW
573{
574 struct parse_events_term *term;
575 int config = $3 & 255;
576
577 ABORT_ON(parse_events_term__sym_hw(&term, $1, config));
578 $$ = term;
579}
580|
581PE_NAME
582{
583 struct parse_events_term *term;
584
585 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
586 $1, 1, true, &@1, NULL));
587 $$ = term;
588}
589|
590PE_VALUE_SYM_HW
591{
592 struct parse_events_term *term;
593 int config = $1 & 255;
594
595 ABORT_ON(parse_events_term__sym_hw(&term, NULL, config));
596 $$ = term;
597}
598|
599PE_TERM '=' PE_NAME
600{
601 struct parse_events_term *term;
602
603 ABORT_ON(parse_events_term__str(&term, (int)$1, NULL, $3, &@1, &@3));
604 $$ = term;
605}
606|
607PE_TERM '=' PE_VALUE
608{
609 struct parse_events_term *term;
610
611 ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, $3, false, &@1, &@3));
612 $$ = term;
613}
614|
615PE_TERM
616{
617 struct parse_events_term *term;
618
619 ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, 1, true, &@1, NULL));
620 $$ = term;
621}
622|
623PE_NAME array '=' PE_NAME
624{
625 struct parse_events_term *term;
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]626
627 ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
628 $1, $4, &@1, &@4));
629
630 term->array = $2;
631 $$ = term;
632}
633|
634PE_NAME array '=' PE_VALUE
635{
636 struct parse_events_term *term;
637
638 ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
639 $1, $4, false, &@1, &@4));
640 term->array = $2;
641 $$ = term;
642}
643|
644PE_DRV_CFG_TERM
645{
646 struct parse_events_term *term;
647
648 ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_DRV_CFG,
649 $1, $1, &@1, NULL));
650 $$ = term;
651}
652
653array:
654'[' array_terms ']'
655{
656 $$ = $2;
657}
658|
659PE_ARRAY_ALL
660{
661 $$.nr_ranges = 0;
662 $$.ranges = NULL;
663}
664
665array_terms:
666array_terms ',' array_term
667{
668 struct parse_events_array new_array;
669
670 new_array.nr_ranges = $1.nr_ranges + $3.nr_ranges;
671 new_array.ranges = malloc(sizeof(new_array.ranges[0]) *
672 new_array.nr_ranges);
673 ABORT_ON(!new_array.ranges);
674 memcpy(&new_array.ranges[0], $1.ranges,
675 $1.nr_ranges * sizeof(new_array.ranges[0]));
676 memcpy(&new_array.ranges[$1.nr_ranges], $3.ranges,
677 $3.nr_ranges * sizeof(new_array.ranges[0]));
678 free($1.ranges);
679 free($3.ranges);
680 $$ = new_array;
681}
682|
683array_term
684
685array_term:
686PE_VALUE
687{
688 struct parse_events_array array;
689
690 array.nr_ranges = 1;
691 array.ranges = malloc(sizeof(array.ranges[0]));
692 ABORT_ON(!array.ranges);
693 array.ranges[0].start = $1;
694 array.ranges[0].length = 1;
695 $$ = array;
696}
697|
698PE_VALUE PE_ARRAY_RANGE PE_VALUE
699{
700 struct parse_events_array array;
701
702 ABORT_ON($3 < $1);
703 array.nr_ranges = 1;
704 array.ranges = malloc(sizeof(array.ranges[0]));
705 ABORT_ON(!array.ranges);
706 array.ranges[0].start = $1;
707 array.ranges[0].length = $3 - $1 + 1;
708 $$ = array;
709}
710
711sep_dc: ':' |
712
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]713sep_slash_slash_dc: '/' '/' | ':' |
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]714
715%%
716
717void parse_events_error(YYLTYPE *loc, void *parse_state,
718 void *scanner __maybe_unused,
719 char const *msg __maybe_unused)
720{
721 parse_events_evlist_error(parse_state, loc->last_column, "parser error");
722}