summaryrefslogtreecommitdiffstats
path: root/tools/perf/util/parse-events.y
blob: 44819bdb037dabbd820f3ba13988ffd7dbf1343e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
%pure-parser
%parse-param {void *_parse_state}
%parse-param {void *scanner}
%lex-param {void* scanner}
%locations

%{

#define YYDEBUG 1

#include <fnmatch.h>
#include <linux/compiler.h>
#include <linux/list.h>
#include <linux/types.h>
#include "util.h"
#include "pmu.h"
#include "debug.h"
#include "parse-events.h"
#include "parse-events-bison.h"

void parse_events_error(YYLTYPE *loc, void *parse_state, void *scanner, char const *msg);

#define ABORT_ON(val) \
do { \
	if (val) \
		YYABORT; \
} while (0)

#define ALLOC_LIST(list) \
do { \
	list = malloc(sizeof(*list)); \
	ABORT_ON(!list);              \
	INIT_LIST_HEAD(list);         \
} while (0)

static void inc_group_count(struct list_head *list,
		       struct parse_events_state *parse_state)
{
	/* Count groups only have more than 1 members */
	if (!list_is_last(list->next, list))
		parse_state->nr_groups++;
}

%}

%token PE_START_EVENTS PE_START_TERMS
%token PE_VALUE PE_VALUE_SYM_HW PE_VALUE_SYM_SW PE_RAW PE_TERM
%token PE_EVENT_NAME
%token PE_NAME
%token PE_BPF_OBJECT PE_BPF_SOURCE
%token PE_MODIFIER_EVENT PE_MODIFIER_BP
%token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT
%token PE_PREFIX_MEM PE_PREFIX_RAW PE_PREFIX_GROUP
%token PE_ERROR
%token PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT
%token PE_ARRAY_ALL PE_ARRAY_RANGE
%token PE_DRV_CFG_TERM
%type <num> PE_VALUE
%type <num> PE_VALUE_SYM_HW
%type <num> PE_VALUE_SYM_SW
%type <num> PE_RAW
%type <num> PE_TERM
%type <str> PE_NAME
%type <str> PE_BPF_OBJECT
%type <str> PE_BPF_SOURCE
%type <str> PE_NAME_CACHE_TYPE
%type <str> PE_NAME_CACHE_OP_RESULT
%type <str> PE_MODIFIER_EVENT
%type <str> PE_MODIFIER_BP
%type <str> PE_EVENT_NAME
%type <str> PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT
%type <str> PE_DRV_CFG_TERM
%type <num> value_sym
%type <head> event_config
%type <head> opt_event_config
%type <head> opt_pmu_config
%type <term> event_term
%type <head> event_pmu
%type <head> event_legacy_symbol
%type <head> event_legacy_cache
%type <head> event_legacy_mem
%type <head> event_legacy_tracepoint
%type <tracepoint_name> tracepoint_name
%type <head> event_legacy_numeric
%type <head> event_legacy_raw
%type <head> event_bpf_file
%type <head> event_def
%type <head> event_mod
%type <head> event_name
%type <head> event
%type <head> events
%type <head> group_def
%type <head> group
%type <head> groups
%type <array> array
%type <array> array_term
%type <array> array_terms

%union
{
	char *str;
	u64 num;
	struct list_head *head;
	struct parse_events_term *term;
	struct tracepoint_name {
		char *sys;
		char *event;
	} tracepoint_name;
	struct parse_events_array array;
}
%%

start:
PE_START_EVENTS start_events
|
PE_START_TERMS  start_terms

start_events: groups
{
	struct parse_events_state *parse_state = _parse_state;

	parse_events_update_lists($1, &parse_state->list);
}

groups:
groups ',' group
{
	struct list_head *list  = $1;
	struct list_head *group = $3;

	parse_events_update_lists(group, list);
	$$ = list;
}
|
groups ',' event
{
	struct list_head *list  = $1;
	struct list_head *event = $3;

	parse_events_update_lists(event, list);
	$$ = list;
}
|
group
|
event

group:
group_def ':' PE_MODIFIER_EVENT
{
	struct list_head *list = $1;

	ABORT_ON(parse_events__modifier_group(list, $3));
	$$ = list;
}
|
group_def

group_def:
PE_NAME '{' events '}'
{
	struct list_head *list = $3;

	inc_group_count(list, _parse_state);
	parse_events__set_leader($1, list, _parse_state);
	$$ = list;
}
|
'{' events '}'
{
	struct list_head *list = $2;

	inc_group_count(list, _parse_state);
	parse_events__set_leader(NULL, list, _parse_state);
	$$ = list;
}

events:
events ',' event
{
	struct list_head *event = $3;
	struct list_head *list  = $1;

	parse_events_update_lists(event, list);
	$$ = list;
}
|
event

event: event_mod

event_mod:
event_name PE_MODIFIER_EVENT
{
	struct list_head *list = $1;

	/*
	 * Apply modifier on all events added by single event definition
	 * (there could be more events added for multiple tracepoint
	 * definitions via '*?'.
	 */
	ABORT_ON(parse_events__modifier_event(list, $2, false));
	$$ = list;
}
|
event_name

event_name:
PE_EVENT_NAME event_def
{
	ABORT_ON(parse_events_name($2, $1));
	free($1);
	$$ = $2;
}
|
event_def

event_def: event_pmu |
	   event_legacy_symbol |
	   event_legacy_cache sep_dc |
	   event_legacy_mem |
	   event_legacy_tracepoint sep_dc |
	   event_legacy_numeric sep_dc |
	   event_legacy_raw sep_dc |
	   event_bpf_file

event_pmu:
PE_NAME opt_pmu_config
{
	struct parse_events_state *parse_state = _parse_state;
	struct parse_events_error *error = parse_state->error;
	struct list_head *list, *orig_terms, *terms;

	if (parse_events_copy_term_list($2, &orig_terms))
		YYABORT;

	if (error)
		error->idx = @1.first_column;

	ALLOC_LIST(list);
	if (parse_events_add_pmu(_parse_state, list, $1, $2, false, false)) {
		struct perf_pmu *pmu = NULL;
		int ok = 0;
		char *pattern;

		if (asprintf(&pattern, "%s*", $1) < 0)
			YYABORT;

		while ((pmu = perf_pmu__scan(pmu)) != NULL) {
			char *name = pmu->name;

			if (!strncmp(name, "uncore_", 7) &&
			    strncmp($1, "uncore_", 7))
				name += 7;
			if (!fnmatch(pattern, name, 0)) {
				if (parse_events_copy_term_list(orig_terms, &terms)) {
					free(pattern);
					YYABORT;
				}
				if (!parse_events_add_pmu(_parse_state, list, pmu->name, terms, true, false))
					ok++;
				parse_events_terms__delete(terms);
			}
		}

		free(pattern);

		if (!ok)
			YYABORT;
	}
	parse_events_terms__delete($2);
	parse_events_terms__delete(orig_terms);
	$$ = list;
}
|
PE_KERNEL_PMU_EVENT sep_dc
{
	struct list_head *list;

	if (parse_events_multi_pmu_add(_parse_state, $1, &list) < 0)
		YYABORT;
	$$ = list;
}
|
PE_PMU_EVENT_PRE '-' PE_PMU_EVENT_SUF sep_dc
{
	struct list_head *list;
	char pmu_name[128];

	snprintf(&pmu_name, 128, "%s-%s", $1, $3);
	if (parse_events_multi_pmu_add(_parse_state, pmu_name, &list) < 0)
		YYABORT;
	$$ = list;
}

value_sym:
PE_VALUE_SYM_HW
|
PE_VALUE_SYM_SW

event_legacy_symbol:
value_sym '/' event_config '/'
{
	struct list_head *list;
	int type = $1 >> 16;
	int config = $1 & 255;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_numeric(_parse_state, list, type, config, $3));
	parse_events_terms__delete($3);
	$$ = list;
}
|
value_sym sep_slash_slash_dc
{
	struct list_head *list;
	int type = $1 >> 16;
	int config = $1 & 255;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_numeric(_parse_state, list, type, config, NULL));
	$$ = list;
}

event_legacy_cache:
PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT opt_event_config
{
	struct parse_events_state *parse_state = _parse_state;
	struct parse_events_error *error = parse_state->error;
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_cache(list, &parse_state->idx, $1, $3, $5, error, $6));
	parse_events_terms__delete($6);
	$$ = list;
}
|
PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT opt_event_config
{
	struct parse_events_state *parse_state = _parse_state;
	struct parse_events_error *error = parse_state->error;
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_cache(list, &parse_state->idx, $1, $3, NULL, error, $4));
	parse_events_terms__delete($4);
	$$ = list;
}
|
PE_NAME_CACHE_TYPE opt_event_config
{
	struct parse_events_state *parse_state = _parse_state;
	struct parse_events_error *error = parse_state->error;
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_cache(list, &parse_state->idx, $1, NULL, NULL, error, $2));
	parse_events_terms__delete($2);
	$$ = list;
}

event_legacy_mem:
PE_PREFIX_MEM PE_VALUE '/' PE_VALUE ':' PE_MODIFIER_BP sep_dc
{
	struct parse_events_state *parse_state = _parse_state;
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
					     (void *) $2, $6, $4));
	$$ = list;
}
|
PE_PREFIX_MEM PE_VALUE '/' PE_VALUE sep_dc
{
	struct parse_events_state *parse_state = _parse_state;
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
					     (void *) $2, NULL, $4));
	$$ = list;
}
|
PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
{
	struct parse_events_state *parse_state = _parse_state;
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
					     (void *) $2, $4, 0));
	$$ = list;
}
|
PE_PREFIX_MEM PE_VALUE sep_dc
{
	struct parse_events_state *parse_state = _parse_state;
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
					     (void *) $2, NULL, 0));
	$$ = list;
}

event_legacy_tracepoint:
tracepoint_name opt_event_config
{
	struct parse_events_state *parse_state = _parse_state;
	struct parse_events_error *error = parse_state->error;
	struct list_head *list;

	ALLOC_LIST(list);
	if (error)
		error->idx = @1.first_column;

	if (parse_events_add_tracepoint(list, &parse_state->idx, $1.sys, $1.event,
					error, $2))
		return -1;

	$$ = list;
}

tracepoint_name:
PE_NAME '-' PE_NAME ':' PE_NAME
{
	char sys_name[128];
	struct tracepoint_name tracepoint;

	snprintf(&sys_name, 128, "%s-%s", $1, $3);
	tracepoint.sys = &sys_name;
	tracepoint.event = $5;

	$$ = tracepoint;
}
|
PE_NAME ':' PE_NAME
{
	struct tracepoint_name tracepoint = {$1, $3};

	$$ = tracepoint;
}

event_legacy_numeric:
PE_VALUE ':' PE_VALUE opt_event_config
{
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_numeric(_parse_state, list, (u32)$1, $3, $4));
	parse_events_terms__delete($4);
	$$ = list;
}

event_legacy_raw:
PE_RAW opt_event_config
{
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_numeric(_parse_state, list, PERF_TYPE_RAW, $1, $2));
	parse_events_terms__delete($2);
	$$ = list;
}

event_bpf_file:
PE_BPF_OBJECT opt_event_config
{
	struct parse_events_state *parse_state = _parse_state;
	struct parse_events_error *error = parse_state->error;
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_load_bpf(parse_state, list, $1, false, $2));
	parse_events_terms__delete($2);
	$$ = list;
}
|
PE_BPF_SOURCE opt_event_config
{
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_load_bpf(_parse_state, list, $1, true, $2));
	parse_events_terms__delete($2);
	$$ = list;
}

opt_event_config:
'/' event_config '/'
{
	$$ = $2;
}
|
'/' '/'
{
	$$ = NULL;
}
|
{
	$$ = NULL;
}

opt_pmu_config:
'/' event_config '/'
{
	$$ = $2;
}
|
'/' '/'
{
	$$ = NULL;
}

start_terms: event_config
{
	struct parse_events_state *parse_state = _parse_state;
	parse_state->terms = $1;
}

event_config:
event_config ',' event_term
{
	struct list_head *head = $1;
	struct parse_events_term *term = $3;

	ABORT_ON(!head);
	list_add_tail(&term->list, head);
	$$ = $1;
}
|
event_term
{
	struct list_head *head = malloc(sizeof(*head));
	struct parse_events_term *term = $1;

	ABORT_ON(!head);
	INIT_LIST_HEAD(head);
	list_add_tail(&term->list, head);
	$$ = head;
}

event_term:
PE_NAME '=' PE_NAME
{
	struct parse_events_term *term;

	ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
					$1, $3, &@1, &@3));
	$$ = term;
}
|
PE_NAME '=' PE_VALUE
{
	struct parse_events_term *term;

	ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
					$1, $3, false, &@1, &@3));
	$$ = term;
}
|
PE_NAME '=' PE_VALUE_SYM_HW
{
	struct parse_events_term *term;
	int config = $3 & 255;

	ABORT_ON(parse_events_term__sym_hw(&term, $1, config));
	$$ = term;
}
|
PE_NAME
{
	struct parse_events_term *term;

	ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
					$1, 1, true, &@1, NULL));
	$$ = term;
}
|
PE_VALUE_SYM_HW
{
	struct parse_events_term *term;
	int config = $1 & 255;

	ABORT_ON(parse_events_term__sym_hw(&term, NULL, config));
	$$ = term;
}
|
PE_TERM '=' PE_NAME
{
	struct parse_events_term *term;

	ABORT_ON(parse_events_term__str(&term, (int)$1, NULL, $3, &@1, &@3));
	$$ = term;
}
|
PE_TERM '=' PE_VALUE
{
	struct parse_events_term *term;

	ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, $3, false, &@1, &@3));
	$$ = term;
}
|
PE_TERM
{
	struct parse_events_term *term;

	ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, 1, true, &@1, NULL));
	$$ = term;
}
|
PE_NAME array '=' PE_NAME
{
	struct parse_events_term *term;
	int i;

	ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER,
					$1, $4, &@1, &@4));

	term->array = $2;
	$$ = term;
}
|
PE_NAME array '=' PE_VALUE
{
	struct parse_events_term *term;

	ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
					$1, $4, false, &@1, &@4));
	term->array = $2;
	$$ = term;
}
|
PE_DRV_CFG_TERM
{
	struct parse_events_term *term;

	ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_DRV_CFG,
					$1, $1, &@1, NULL));
	$$ = term;
}

array:
'[' array_terms ']'
{
	$$ = $2;
}
|
PE_ARRAY_ALL
{
	$$.nr_ranges = 0;
	$$.ranges = NULL;
}

array_terms:
array_terms ',' array_term
{
	struct parse_events_array new_array;

	new_array.nr_ranges = $1.nr_ranges + $3.nr_ranges;
	new_array.ranges = malloc(sizeof(new_array.ranges[0]) *
				  new_array.nr_ranges);
	ABORT_ON(!new_array.ranges);
	memcpy(&new_array.ranges[0], $1.ranges,
	       $1.nr_ranges * sizeof(new_array.ranges[0]));
	memcpy(&new_array.ranges[$1.nr_ranges], $3.ranges,
	       $3.nr_ranges * sizeof(new_array.ranges[0]));
	free($1.ranges);
	free($3.ranges);
	$$ = new_array;
}
|
array_term

array_term:
PE_VALUE
{
	struct parse_events_array array;

	array.nr_ranges = 1;
	array.ranges = malloc(sizeof(array.ranges[0]));
	ABORT_ON(!array.ranges);
	array.ranges[0].start = $1;
	array.ranges[0].length = 1;
	$$ = array;
}
|
PE_VALUE PE_ARRAY_RANGE PE_VALUE
{
	struct parse_events_array array;

	ABORT_ON($3 < $1);
	array.nr_ranges = 1;
	array.ranges = malloc(sizeof(array.ranges[0]));
	ABORT_ON(!array.ranges);
	array.ranges[0].start = $1;
	array.ranges[0].length = $3 - $1 + 1;
	$$ = array;
}

sep_dc: ':' |

sep_slash_slash_dc: '/' '/' | ':' |

%%

void parse_events_error(YYLTYPE *loc, void *parse_state,
			void *scanner __maybe_unused,
			char const *msg __maybe_unused)
{
	parse_events_evlist_error(parse_state, loc->last_column, "parser error");
}