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[mirror_ubuntu-artful-kernel.git] / tools / perf / util / parse-events.c
1 #include <linux/hw_breakpoint.h>
2 #include "util.h"
3 #include "../perf.h"
4 #include "evlist.h"
5 #include "evsel.h"
6 #include "parse-options.h"
7 #include "parse-events.h"
8 #include "exec_cmd.h"
9 #include "linux/string.h"
10 #include "symbol.h"
11 #include "cache.h"
12 #include "header.h"
13 #include <api/fs/debugfs.h>
14 #include "parse-events-bison.h"
15 #define YY_EXTRA_TYPE int
16 #include "parse-events-flex.h"
17 #include "pmu.h"
18 #include "thread_map.h"
19
20 #define MAX_NAME_LEN 100
21
22 struct event_symbol {
23 const char *symbol;
24 const char *alias;
25 };
26
27 #ifdef PARSER_DEBUG
28 extern int parse_events_debug;
29 #endif
30 int parse_events_parse(void *data, void *scanner);
31
32 static struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
33 [PERF_COUNT_HW_CPU_CYCLES] = {
34 .symbol = "cpu-cycles",
35 .alias = "cycles",
36 },
37 [PERF_COUNT_HW_INSTRUCTIONS] = {
38 .symbol = "instructions",
39 .alias = "",
40 },
41 [PERF_COUNT_HW_CACHE_REFERENCES] = {
42 .symbol = "cache-references",
43 .alias = "",
44 },
45 [PERF_COUNT_HW_CACHE_MISSES] = {
46 .symbol = "cache-misses",
47 .alias = "",
48 },
49 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
50 .symbol = "branch-instructions",
51 .alias = "branches",
52 },
53 [PERF_COUNT_HW_BRANCH_MISSES] = {
54 .symbol = "branch-misses",
55 .alias = "",
56 },
57 [PERF_COUNT_HW_BUS_CYCLES] = {
58 .symbol = "bus-cycles",
59 .alias = "",
60 },
61 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
62 .symbol = "stalled-cycles-frontend",
63 .alias = "idle-cycles-frontend",
64 },
65 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
66 .symbol = "stalled-cycles-backend",
67 .alias = "idle-cycles-backend",
68 },
69 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
70 .symbol = "ref-cycles",
71 .alias = "",
72 },
73 };
74
75 static struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
76 [PERF_COUNT_SW_CPU_CLOCK] = {
77 .symbol = "cpu-clock",
78 .alias = "",
79 },
80 [PERF_COUNT_SW_TASK_CLOCK] = {
81 .symbol = "task-clock",
82 .alias = "",
83 },
84 [PERF_COUNT_SW_PAGE_FAULTS] = {
85 .symbol = "page-faults",
86 .alias = "faults",
87 },
88 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
89 .symbol = "context-switches",
90 .alias = "cs",
91 },
92 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
93 .symbol = "cpu-migrations",
94 .alias = "migrations",
95 },
96 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
97 .symbol = "minor-faults",
98 .alias = "",
99 },
100 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
101 .symbol = "major-faults",
102 .alias = "",
103 },
104 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
105 .symbol = "alignment-faults",
106 .alias = "",
107 },
108 [PERF_COUNT_SW_EMULATION_FAULTS] = {
109 .symbol = "emulation-faults",
110 .alias = "",
111 },
112 [PERF_COUNT_SW_DUMMY] = {
113 .symbol = "dummy",
114 .alias = "",
115 },
116 };
117
118 #define __PERF_EVENT_FIELD(config, name) \
119 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
120
121 #define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
122 #define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
123 #define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
124 #define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
125
126 #define for_each_subsystem(sys_dir, sys_dirent, sys_next) \
127 while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next) \
128 if (sys_dirent.d_type == DT_DIR && \
129 (strcmp(sys_dirent.d_name, ".")) && \
130 (strcmp(sys_dirent.d_name, "..")))
131
132 static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
133 {
134 char evt_path[MAXPATHLEN];
135 int fd;
136
137 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
138 sys_dir->d_name, evt_dir->d_name);
139 fd = open(evt_path, O_RDONLY);
140 if (fd < 0)
141 return -EINVAL;
142 close(fd);
143
144 return 0;
145 }
146
147 #define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) \
148 while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next) \
149 if (evt_dirent.d_type == DT_DIR && \
150 (strcmp(evt_dirent.d_name, ".")) && \
151 (strcmp(evt_dirent.d_name, "..")) && \
152 (!tp_event_has_id(&sys_dirent, &evt_dirent)))
153
154 #define MAX_EVENT_LENGTH 512
155
156
157 struct tracepoint_path *tracepoint_id_to_path(u64 config)
158 {
159 struct tracepoint_path *path = NULL;
160 DIR *sys_dir, *evt_dir;
161 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
162 char id_buf[24];
163 int fd;
164 u64 id;
165 char evt_path[MAXPATHLEN];
166 char dir_path[MAXPATHLEN];
167
168 if (debugfs_valid_mountpoint(tracing_events_path))
169 return NULL;
170
171 sys_dir = opendir(tracing_events_path);
172 if (!sys_dir)
173 return NULL;
174
175 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
176
177 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
178 sys_dirent.d_name);
179 evt_dir = opendir(dir_path);
180 if (!evt_dir)
181 continue;
182
183 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
184
185 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
186 evt_dirent.d_name);
187 fd = open(evt_path, O_RDONLY);
188 if (fd < 0)
189 continue;
190 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
191 close(fd);
192 continue;
193 }
194 close(fd);
195 id = atoll(id_buf);
196 if (id == config) {
197 closedir(evt_dir);
198 closedir(sys_dir);
199 path = zalloc(sizeof(*path));
200 path->system = malloc(MAX_EVENT_LENGTH);
201 if (!path->system) {
202 free(path);
203 return NULL;
204 }
205 path->name = malloc(MAX_EVENT_LENGTH);
206 if (!path->name) {
207 zfree(&path->system);
208 free(path);
209 return NULL;
210 }
211 strncpy(path->system, sys_dirent.d_name,
212 MAX_EVENT_LENGTH);
213 strncpy(path->name, evt_dirent.d_name,
214 MAX_EVENT_LENGTH);
215 return path;
216 }
217 }
218 closedir(evt_dir);
219 }
220
221 closedir(sys_dir);
222 return NULL;
223 }
224
225 struct tracepoint_path *tracepoint_name_to_path(const char *name)
226 {
227 struct tracepoint_path *path = zalloc(sizeof(*path));
228 char *str = strchr(name, ':');
229
230 if (path == NULL || str == NULL) {
231 free(path);
232 return NULL;
233 }
234
235 path->system = strndup(name, str - name);
236 path->name = strdup(str+1);
237
238 if (path->system == NULL || path->name == NULL) {
239 zfree(&path->system);
240 zfree(&path->name);
241 free(path);
242 path = NULL;
243 }
244
245 return path;
246 }
247
248 const char *event_type(int type)
249 {
250 switch (type) {
251 case PERF_TYPE_HARDWARE:
252 return "hardware";
253
254 case PERF_TYPE_SOFTWARE:
255 return "software";
256
257 case PERF_TYPE_TRACEPOINT:
258 return "tracepoint";
259
260 case PERF_TYPE_HW_CACHE:
261 return "hardware-cache";
262
263 default:
264 break;
265 }
266
267 return "unknown";
268 }
269
270
271
272 static struct perf_evsel *
273 __add_event(struct list_head *list, int *idx,
274 struct perf_event_attr *attr,
275 char *name, struct cpu_map *cpus)
276 {
277 struct perf_evsel *evsel;
278
279 event_attr_init(attr);
280
281 evsel = perf_evsel__new_idx(attr, (*idx)++);
282 if (!evsel)
283 return NULL;
284
285 evsel->cpus = cpus;
286 if (name)
287 evsel->name = strdup(name);
288 list_add_tail(&evsel->node, list);
289 return evsel;
290 }
291
292 static int add_event(struct list_head *list, int *idx,
293 struct perf_event_attr *attr, char *name)
294 {
295 return __add_event(list, idx, attr, name, NULL) ? 0 : -ENOMEM;
296 }
297
298 static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
299 {
300 int i, j;
301 int n, longest = -1;
302
303 for (i = 0; i < size; i++) {
304 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
305 n = strlen(names[i][j]);
306 if (n > longest && !strncasecmp(str, names[i][j], n))
307 longest = n;
308 }
309 if (longest > 0)
310 return i;
311 }
312
313 return -1;
314 }
315
316 int parse_events_add_cache(struct list_head *list, int *idx,
317 char *type, char *op_result1, char *op_result2)
318 {
319 struct perf_event_attr attr;
320 char name[MAX_NAME_LEN];
321 int cache_type = -1, cache_op = -1, cache_result = -1;
322 char *op_result[2] = { op_result1, op_result2 };
323 int i, n;
324
325 /*
326 * No fallback - if we cannot get a clear cache type
327 * then bail out:
328 */
329 cache_type = parse_aliases(type, perf_evsel__hw_cache,
330 PERF_COUNT_HW_CACHE_MAX);
331 if (cache_type == -1)
332 return -EINVAL;
333
334 n = snprintf(name, MAX_NAME_LEN, "%s", type);
335
336 for (i = 0; (i < 2) && (op_result[i]); i++) {
337 char *str = op_result[i];
338
339 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
340
341 if (cache_op == -1) {
342 cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
343 PERF_COUNT_HW_CACHE_OP_MAX);
344 if (cache_op >= 0) {
345 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
346 return -EINVAL;
347 continue;
348 }
349 }
350
351 if (cache_result == -1) {
352 cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
353 PERF_COUNT_HW_CACHE_RESULT_MAX);
354 if (cache_result >= 0)
355 continue;
356 }
357 }
358
359 /*
360 * Fall back to reads:
361 */
362 if (cache_op == -1)
363 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
364
365 /*
366 * Fall back to accesses:
367 */
368 if (cache_result == -1)
369 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
370
371 memset(&attr, 0, sizeof(attr));
372 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
373 attr.type = PERF_TYPE_HW_CACHE;
374 return add_event(list, idx, &attr, name);
375 }
376
377 static int add_tracepoint(struct list_head *list, int *idx,
378 char *sys_name, char *evt_name)
379 {
380 struct perf_evsel *evsel;
381
382 evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
383 if (!evsel)
384 return -ENOMEM;
385
386 list_add_tail(&evsel->node, list);
387
388 return 0;
389 }
390
391 static int add_tracepoint_multi_event(struct list_head *list, int *idx,
392 char *sys_name, char *evt_name)
393 {
394 char evt_path[MAXPATHLEN];
395 struct dirent *evt_ent;
396 DIR *evt_dir;
397 int ret = 0;
398
399 snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
400 evt_dir = opendir(evt_path);
401 if (!evt_dir) {
402 perror("Can't open event dir");
403 return -1;
404 }
405
406 while (!ret && (evt_ent = readdir(evt_dir))) {
407 if (!strcmp(evt_ent->d_name, ".")
408 || !strcmp(evt_ent->d_name, "..")
409 || !strcmp(evt_ent->d_name, "enable")
410 || !strcmp(evt_ent->d_name, "filter"))
411 continue;
412
413 if (!strglobmatch(evt_ent->d_name, evt_name))
414 continue;
415
416 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name);
417 }
418
419 closedir(evt_dir);
420 return ret;
421 }
422
423 static int add_tracepoint_event(struct list_head *list, int *idx,
424 char *sys_name, char *evt_name)
425 {
426 return strpbrk(evt_name, "*?") ?
427 add_tracepoint_multi_event(list, idx, sys_name, evt_name) :
428 add_tracepoint(list, idx, sys_name, evt_name);
429 }
430
431 static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
432 char *sys_name, char *evt_name)
433 {
434 struct dirent *events_ent;
435 DIR *events_dir;
436 int ret = 0;
437
438 events_dir = opendir(tracing_events_path);
439 if (!events_dir) {
440 perror("Can't open event dir");
441 return -1;
442 }
443
444 while (!ret && (events_ent = readdir(events_dir))) {
445 if (!strcmp(events_ent->d_name, ".")
446 || !strcmp(events_ent->d_name, "..")
447 || !strcmp(events_ent->d_name, "enable")
448 || !strcmp(events_ent->d_name, "header_event")
449 || !strcmp(events_ent->d_name, "header_page"))
450 continue;
451
452 if (!strglobmatch(events_ent->d_name, sys_name))
453 continue;
454
455 ret = add_tracepoint_event(list, idx, events_ent->d_name,
456 evt_name);
457 }
458
459 closedir(events_dir);
460 return ret;
461 }
462
463 int parse_events_add_tracepoint(struct list_head *list, int *idx,
464 char *sys, char *event)
465 {
466 int ret;
467
468 ret = debugfs_valid_mountpoint(tracing_events_path);
469 if (ret)
470 return ret;
471
472 if (strpbrk(sys, "*?"))
473 return add_tracepoint_multi_sys(list, idx, sys, event);
474 else
475 return add_tracepoint_event(list, idx, sys, event);
476 }
477
478 static int
479 parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
480 {
481 int i;
482
483 for (i = 0; i < 3; i++) {
484 if (!type || !type[i])
485 break;
486
487 #define CHECK_SET_TYPE(bit) \
488 do { \
489 if (attr->bp_type & bit) \
490 return -EINVAL; \
491 else \
492 attr->bp_type |= bit; \
493 } while (0)
494
495 switch (type[i]) {
496 case 'r':
497 CHECK_SET_TYPE(HW_BREAKPOINT_R);
498 break;
499 case 'w':
500 CHECK_SET_TYPE(HW_BREAKPOINT_W);
501 break;
502 case 'x':
503 CHECK_SET_TYPE(HW_BREAKPOINT_X);
504 break;
505 default:
506 return -EINVAL;
507 }
508 }
509
510 #undef CHECK_SET_TYPE
511
512 if (!attr->bp_type) /* Default */
513 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
514
515 return 0;
516 }
517
518 int parse_events_add_breakpoint(struct list_head *list, int *idx,
519 void *ptr, char *type)
520 {
521 struct perf_event_attr attr;
522
523 memset(&attr, 0, sizeof(attr));
524 attr.bp_addr = (unsigned long) ptr;
525
526 if (parse_breakpoint_type(type, &attr))
527 return -EINVAL;
528
529 /*
530 * We should find a nice way to override the access length
531 * Provide some defaults for now
532 */
533 if (attr.bp_type == HW_BREAKPOINT_X)
534 attr.bp_len = sizeof(long);
535 else
536 attr.bp_len = HW_BREAKPOINT_LEN_4;
537
538 attr.type = PERF_TYPE_BREAKPOINT;
539 attr.sample_period = 1;
540
541 return add_event(list, idx, &attr, NULL);
542 }
543
544 static int config_term(struct perf_event_attr *attr,
545 struct parse_events_term *term)
546 {
547 #define CHECK_TYPE_VAL(type) \
548 do { \
549 if (PARSE_EVENTS__TERM_TYPE_ ## type != term->type_val) \
550 return -EINVAL; \
551 } while (0)
552
553 switch (term->type_term) {
554 case PARSE_EVENTS__TERM_TYPE_CONFIG:
555 CHECK_TYPE_VAL(NUM);
556 attr->config = term->val.num;
557 break;
558 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
559 CHECK_TYPE_VAL(NUM);
560 attr->config1 = term->val.num;
561 break;
562 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
563 CHECK_TYPE_VAL(NUM);
564 attr->config2 = term->val.num;
565 break;
566 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
567 CHECK_TYPE_VAL(NUM);
568 attr->sample_period = term->val.num;
569 break;
570 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
571 /*
572 * TODO uncomment when the field is available
573 * attr->branch_sample_type = term->val.num;
574 */
575 break;
576 case PARSE_EVENTS__TERM_TYPE_NAME:
577 CHECK_TYPE_VAL(STR);
578 break;
579 default:
580 return -EINVAL;
581 }
582
583 return 0;
584 #undef CHECK_TYPE_VAL
585 }
586
587 static int config_attr(struct perf_event_attr *attr,
588 struct list_head *head, int fail)
589 {
590 struct parse_events_term *term;
591
592 list_for_each_entry(term, head, list)
593 if (config_term(attr, term) && fail)
594 return -EINVAL;
595
596 return 0;
597 }
598
599 int parse_events_add_numeric(struct list_head *list, int *idx,
600 u32 type, u64 config,
601 struct list_head *head_config)
602 {
603 struct perf_event_attr attr;
604
605 memset(&attr, 0, sizeof(attr));
606 attr.type = type;
607 attr.config = config;
608
609 if (head_config &&
610 config_attr(&attr, head_config, 1))
611 return -EINVAL;
612
613 return add_event(list, idx, &attr, NULL);
614 }
615
616 static int parse_events__is_name_term(struct parse_events_term *term)
617 {
618 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
619 }
620
621 static char *pmu_event_name(struct list_head *head_terms)
622 {
623 struct parse_events_term *term;
624
625 list_for_each_entry(term, head_terms, list)
626 if (parse_events__is_name_term(term))
627 return term->val.str;
628
629 return NULL;
630 }
631
632 int parse_events_add_pmu(struct list_head *list, int *idx,
633 char *name, struct list_head *head_config)
634 {
635 struct perf_event_attr attr;
636 struct perf_pmu *pmu;
637 struct perf_evsel *evsel;
638 char *unit;
639 double scale;
640
641 pmu = perf_pmu__find(name);
642 if (!pmu)
643 return -EINVAL;
644
645 memset(&attr, 0, sizeof(attr));
646
647 if (perf_pmu__check_alias(pmu, head_config, &unit, &scale))
648 return -EINVAL;
649
650 /*
651 * Configure hardcoded terms first, no need to check
652 * return value when called with fail == 0 ;)
653 */
654 config_attr(&attr, head_config, 0);
655
656 if (perf_pmu__config(pmu, &attr, head_config))
657 return -EINVAL;
658
659 evsel = __add_event(list, idx, &attr, pmu_event_name(head_config),
660 pmu->cpus);
661 if (evsel) {
662 evsel->unit = unit;
663 evsel->scale = scale;
664 }
665
666 return evsel ? 0 : -ENOMEM;
667 }
668
669 int parse_events__modifier_group(struct list_head *list,
670 char *event_mod)
671 {
672 return parse_events__modifier_event(list, event_mod, true);
673 }
674
675 void parse_events__set_leader(char *name, struct list_head *list)
676 {
677 struct perf_evsel *leader;
678
679 __perf_evlist__set_leader(list);
680 leader = list_entry(list->next, struct perf_evsel, node);
681 leader->group_name = name ? strdup(name) : NULL;
682 }
683
684 /* list_event is assumed to point to malloc'ed memory */
685 void parse_events_update_lists(struct list_head *list_event,
686 struct list_head *list_all)
687 {
688 /*
689 * Called for single event definition. Update the
690 * 'all event' list, and reinit the 'single event'
691 * list, for next event definition.
692 */
693 list_splice_tail(list_event, list_all);
694 free(list_event);
695 }
696
697 struct event_modifier {
698 int eu;
699 int ek;
700 int eh;
701 int eH;
702 int eG;
703 int precise;
704 int exclude_GH;
705 int sample_read;
706 int pinned;
707 };
708
709 static int get_event_modifier(struct event_modifier *mod, char *str,
710 struct perf_evsel *evsel)
711 {
712 int eu = evsel ? evsel->attr.exclude_user : 0;
713 int ek = evsel ? evsel->attr.exclude_kernel : 0;
714 int eh = evsel ? evsel->attr.exclude_hv : 0;
715 int eH = evsel ? evsel->attr.exclude_host : 0;
716 int eG = evsel ? evsel->attr.exclude_guest : 0;
717 int precise = evsel ? evsel->attr.precise_ip : 0;
718 int sample_read = 0;
719 int pinned = evsel ? evsel->attr.pinned : 0;
720
721 int exclude = eu | ek | eh;
722 int exclude_GH = evsel ? evsel->exclude_GH : 0;
723
724 memset(mod, 0, sizeof(*mod));
725
726 while (*str) {
727 if (*str == 'u') {
728 if (!exclude)
729 exclude = eu = ek = eh = 1;
730 eu = 0;
731 } else if (*str == 'k') {
732 if (!exclude)
733 exclude = eu = ek = eh = 1;
734 ek = 0;
735 } else if (*str == 'h') {
736 if (!exclude)
737 exclude = eu = ek = eh = 1;
738 eh = 0;
739 } else if (*str == 'G') {
740 if (!exclude_GH)
741 exclude_GH = eG = eH = 1;
742 eG = 0;
743 } else if (*str == 'H') {
744 if (!exclude_GH)
745 exclude_GH = eG = eH = 1;
746 eH = 0;
747 } else if (*str == 'p') {
748 precise++;
749 /* use of precise requires exclude_guest */
750 if (!exclude_GH)
751 eG = 1;
752 } else if (*str == 'S') {
753 sample_read = 1;
754 } else if (*str == 'D') {
755 pinned = 1;
756 } else
757 break;
758
759 ++str;
760 }
761
762 /*
763 * precise ip:
764 *
765 * 0 - SAMPLE_IP can have arbitrary skid
766 * 1 - SAMPLE_IP must have constant skid
767 * 2 - SAMPLE_IP requested to have 0 skid
768 * 3 - SAMPLE_IP must have 0 skid
769 *
770 * See also PERF_RECORD_MISC_EXACT_IP
771 */
772 if (precise > 3)
773 return -EINVAL;
774
775 mod->eu = eu;
776 mod->ek = ek;
777 mod->eh = eh;
778 mod->eH = eH;
779 mod->eG = eG;
780 mod->precise = precise;
781 mod->exclude_GH = exclude_GH;
782 mod->sample_read = sample_read;
783 mod->pinned = pinned;
784
785 return 0;
786 }
787
788 /*
789 * Basic modifier sanity check to validate it contains only one
790 * instance of any modifier (apart from 'p') present.
791 */
792 static int check_modifier(char *str)
793 {
794 char *p = str;
795
796 /* The sizeof includes 0 byte as well. */
797 if (strlen(str) > (sizeof("ukhGHpppSD") - 1))
798 return -1;
799
800 while (*p) {
801 if (*p != 'p' && strchr(p + 1, *p))
802 return -1;
803 p++;
804 }
805
806 return 0;
807 }
808
809 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
810 {
811 struct perf_evsel *evsel;
812 struct event_modifier mod;
813
814 if (str == NULL)
815 return 0;
816
817 if (check_modifier(str))
818 return -EINVAL;
819
820 if (!add && get_event_modifier(&mod, str, NULL))
821 return -EINVAL;
822
823 list_for_each_entry(evsel, list, node) {
824
825 if (add && get_event_modifier(&mod, str, evsel))
826 return -EINVAL;
827
828 evsel->attr.exclude_user = mod.eu;
829 evsel->attr.exclude_kernel = mod.ek;
830 evsel->attr.exclude_hv = mod.eh;
831 evsel->attr.precise_ip = mod.precise;
832 evsel->attr.exclude_host = mod.eH;
833 evsel->attr.exclude_guest = mod.eG;
834 evsel->exclude_GH = mod.exclude_GH;
835 evsel->sample_read = mod.sample_read;
836
837 if (perf_evsel__is_group_leader(evsel))
838 evsel->attr.pinned = mod.pinned;
839 }
840
841 return 0;
842 }
843
844 int parse_events_name(struct list_head *list, char *name)
845 {
846 struct perf_evsel *evsel;
847
848 list_for_each_entry(evsel, list, node) {
849 if (!evsel->name)
850 evsel->name = strdup(name);
851 }
852
853 return 0;
854 }
855
856 static int parse_events__scanner(const char *str, void *data, int start_token);
857
858 static int parse_events_fixup(int ret, const char *str, void *data,
859 int start_token)
860 {
861 char *o = strdup(str);
862 char *s = NULL;
863 char *t = o;
864 char *p;
865 int len = 0;
866
867 if (!o)
868 return ret;
869 while ((p = strsep(&t, ",")) != NULL) {
870 if (s)
871 str_append(&s, &len, ",");
872 str_append(&s, &len, "cpu/");
873 str_append(&s, &len, p);
874 str_append(&s, &len, "/");
875 }
876 free(o);
877 if (!s)
878 return -ENOMEM;
879 return parse_events__scanner(s, data, start_token);
880 }
881
882 static int parse_events__scanner(const char *str, void *data, int start_token)
883 {
884 YY_BUFFER_STATE buffer;
885 void *scanner;
886 int ret;
887
888 ret = parse_events_lex_init_extra(start_token, &scanner);
889 if (ret)
890 return ret;
891
892 buffer = parse_events__scan_string(str, scanner);
893
894 #ifdef PARSER_DEBUG
895 parse_events_debug = 1;
896 #endif
897 ret = parse_events_parse(data, scanner);
898
899 parse_events__flush_buffer(buffer, scanner);
900 parse_events__delete_buffer(buffer, scanner);
901 parse_events_lex_destroy(scanner);
902 if (ret && !strchr(str, '/'))
903 ret = parse_events_fixup(ret, str, data, start_token);
904 return ret;
905 }
906
907 /*
908 * parse event config string, return a list of event terms.
909 */
910 int parse_events_terms(struct list_head *terms, const char *str)
911 {
912 struct parse_events_terms data = {
913 .terms = NULL,
914 };
915 int ret;
916
917 ret = parse_events__scanner(str, &data, PE_START_TERMS);
918 if (!ret) {
919 list_splice(data.terms, terms);
920 zfree(&data.terms);
921 return 0;
922 }
923
924 if (data.terms)
925 parse_events__free_terms(data.terms);
926 return ret;
927 }
928
929 int parse_events(struct perf_evlist *evlist, const char *str)
930 {
931 struct parse_events_evlist data = {
932 .list = LIST_HEAD_INIT(data.list),
933 .idx = evlist->nr_entries,
934 };
935 int ret;
936
937 ret = parse_events__scanner(str, &data, PE_START_EVENTS);
938 if (!ret) {
939 int entries = data.idx - evlist->nr_entries;
940 perf_evlist__splice_list_tail(evlist, &data.list, entries);
941 evlist->nr_groups += data.nr_groups;
942 return 0;
943 }
944
945 /*
946 * There are 2 users - builtin-record and builtin-test objects.
947 * Both call perf_evlist__delete in case of error, so we dont
948 * need to bother.
949 */
950 return ret;
951 }
952
953 int parse_events_option(const struct option *opt, const char *str,
954 int unset __maybe_unused)
955 {
956 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
957 int ret = parse_events(evlist, str);
958
959 if (ret) {
960 fprintf(stderr, "invalid or unsupported event: '%s'\n", str);
961 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
962 }
963 return ret;
964 }
965
966 int parse_filter(const struct option *opt, const char *str,
967 int unset __maybe_unused)
968 {
969 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
970 struct perf_evsel *last = NULL;
971
972 if (evlist->nr_entries > 0)
973 last = perf_evlist__last(evlist);
974
975 if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
976 fprintf(stderr,
977 "-F option should follow a -e tracepoint option\n");
978 return -1;
979 }
980
981 last->filter = strdup(str);
982 if (last->filter == NULL) {
983 fprintf(stderr, "not enough memory to hold filter string\n");
984 return -1;
985 }
986
987 return 0;
988 }
989
990 static const char * const event_type_descriptors[] = {
991 "Hardware event",
992 "Software event",
993 "Tracepoint event",
994 "Hardware cache event",
995 "Raw hardware event descriptor",
996 "Hardware breakpoint",
997 };
998
999 /*
1000 * Print the events from <debugfs_mount_point>/tracing/events
1001 */
1002
1003 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1004 bool name_only)
1005 {
1006 DIR *sys_dir, *evt_dir;
1007 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
1008 char evt_path[MAXPATHLEN];
1009 char dir_path[MAXPATHLEN];
1010
1011 if (debugfs_valid_mountpoint(tracing_events_path)) {
1012 printf(" [ Tracepoints not available: %s ]\n", strerror(errno));
1013 return;
1014 }
1015
1016 sys_dir = opendir(tracing_events_path);
1017 if (!sys_dir)
1018 return;
1019
1020 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
1021 if (subsys_glob != NULL &&
1022 !strglobmatch(sys_dirent.d_name, subsys_glob))
1023 continue;
1024
1025 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1026 sys_dirent.d_name);
1027 evt_dir = opendir(dir_path);
1028 if (!evt_dir)
1029 continue;
1030
1031 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
1032 if (event_glob != NULL &&
1033 !strglobmatch(evt_dirent.d_name, event_glob))
1034 continue;
1035
1036 if (name_only) {
1037 printf("%s:%s ", sys_dirent.d_name, evt_dirent.d_name);
1038 continue;
1039 }
1040
1041 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1042 sys_dirent.d_name, evt_dirent.d_name);
1043 printf(" %-50s [%s]\n", evt_path,
1044 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1045 }
1046 closedir(evt_dir);
1047 }
1048 closedir(sys_dir);
1049 }
1050
1051 /*
1052 * Check whether event is in <debugfs_mount_point>/tracing/events
1053 */
1054
1055 int is_valid_tracepoint(const char *event_string)
1056 {
1057 DIR *sys_dir, *evt_dir;
1058 struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
1059 char evt_path[MAXPATHLEN];
1060 char dir_path[MAXPATHLEN];
1061
1062 if (debugfs_valid_mountpoint(tracing_events_path))
1063 return 0;
1064
1065 sys_dir = opendir(tracing_events_path);
1066 if (!sys_dir)
1067 return 0;
1068
1069 for_each_subsystem(sys_dir, sys_dirent, sys_next) {
1070
1071 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1072 sys_dirent.d_name);
1073 evt_dir = opendir(dir_path);
1074 if (!evt_dir)
1075 continue;
1076
1077 for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
1078 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1079 sys_dirent.d_name, evt_dirent.d_name);
1080 if (!strcmp(evt_path, event_string)) {
1081 closedir(evt_dir);
1082 closedir(sys_dir);
1083 return 1;
1084 }
1085 }
1086 closedir(evt_dir);
1087 }
1088 closedir(sys_dir);
1089 return 0;
1090 }
1091
1092 static bool is_event_supported(u8 type, unsigned config)
1093 {
1094 bool ret = true;
1095 struct perf_evsel *evsel;
1096 struct perf_event_attr attr = {
1097 .type = type,
1098 .config = config,
1099 .disabled = 1,
1100 .exclude_kernel = 1,
1101 };
1102 struct {
1103 struct thread_map map;
1104 int threads[1];
1105 } tmap = {
1106 .map.nr = 1,
1107 .threads = { 0 },
1108 };
1109
1110 evsel = perf_evsel__new(&attr);
1111 if (evsel) {
1112 ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
1113 perf_evsel__delete(evsel);
1114 }
1115
1116 return ret;
1117 }
1118
1119 static void __print_events_type(u8 type, struct event_symbol *syms,
1120 unsigned max)
1121 {
1122 char name[64];
1123 unsigned i;
1124
1125 for (i = 0; i < max ; i++, syms++) {
1126 if (!is_event_supported(type, i))
1127 continue;
1128
1129 if (strlen(syms->alias))
1130 snprintf(name, sizeof(name), "%s OR %s",
1131 syms->symbol, syms->alias);
1132 else
1133 snprintf(name, sizeof(name), "%s", syms->symbol);
1134
1135 printf(" %-50s [%s]\n", name, event_type_descriptors[type]);
1136 }
1137 }
1138
1139 void print_events_type(u8 type)
1140 {
1141 if (type == PERF_TYPE_SOFTWARE)
1142 __print_events_type(type, event_symbols_sw, PERF_COUNT_SW_MAX);
1143 else
1144 __print_events_type(type, event_symbols_hw, PERF_COUNT_HW_MAX);
1145 }
1146
1147 int print_hwcache_events(const char *event_glob, bool name_only)
1148 {
1149 unsigned int type, op, i, printed = 0;
1150 char name[64];
1151
1152 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
1153 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
1154 /* skip invalid cache type */
1155 if (!perf_evsel__is_cache_op_valid(type, op))
1156 continue;
1157
1158 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
1159 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
1160 name, sizeof(name));
1161 if (event_glob != NULL && !strglobmatch(name, event_glob))
1162 continue;
1163
1164 if (!is_event_supported(PERF_TYPE_HW_CACHE,
1165 type | (op << 8) | (i << 16)))
1166 continue;
1167
1168 if (name_only)
1169 printf("%s ", name);
1170 else
1171 printf(" %-50s [%s]\n", name,
1172 event_type_descriptors[PERF_TYPE_HW_CACHE]);
1173 ++printed;
1174 }
1175 }
1176 }
1177
1178 if (printed)
1179 printf("\n");
1180 return printed;
1181 }
1182
1183 static void print_symbol_events(const char *event_glob, unsigned type,
1184 struct event_symbol *syms, unsigned max,
1185 bool name_only)
1186 {
1187 unsigned i, printed = 0;
1188 char name[MAX_NAME_LEN];
1189
1190 for (i = 0; i < max; i++, syms++) {
1191
1192 if (event_glob != NULL &&
1193 !(strglobmatch(syms->symbol, event_glob) ||
1194 (syms->alias && strglobmatch(syms->alias, event_glob))))
1195 continue;
1196
1197 if (!is_event_supported(type, i))
1198 continue;
1199
1200 if (name_only) {
1201 printf("%s ", syms->symbol);
1202 continue;
1203 }
1204
1205 if (strlen(syms->alias))
1206 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
1207 else
1208 strncpy(name, syms->symbol, MAX_NAME_LEN);
1209
1210 printf(" %-50s [%s]\n", name, event_type_descriptors[type]);
1211
1212 printed++;
1213 }
1214
1215 if (printed)
1216 printf("\n");
1217 }
1218
1219 /*
1220 * Print the help text for the event symbols:
1221 */
1222 void print_events(const char *event_glob, bool name_only)
1223 {
1224 if (!name_only) {
1225 printf("\n");
1226 printf("List of pre-defined events (to be used in -e):\n");
1227 }
1228
1229 print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
1230 event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
1231
1232 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
1233 event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
1234
1235 print_hwcache_events(event_glob, name_only);
1236
1237 print_pmu_events(event_glob, name_only);
1238
1239 if (event_glob != NULL)
1240 return;
1241
1242 if (!name_only) {
1243 printf(" %-50s [%s]\n",
1244 "rNNN",
1245 event_type_descriptors[PERF_TYPE_RAW]);
1246 printf(" %-50s [%s]\n",
1247 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
1248 event_type_descriptors[PERF_TYPE_RAW]);
1249 printf(" (see 'man perf-list' on how to encode it)\n");
1250 printf("\n");
1251
1252 printf(" %-50s [%s]\n",
1253 "mem:<addr>[:access]",
1254 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
1255 printf("\n");
1256 }
1257
1258 print_tracepoint_events(NULL, NULL, name_only);
1259 }
1260
1261 int parse_events__is_hardcoded_term(struct parse_events_term *term)
1262 {
1263 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
1264 }
1265
1266 static int new_term(struct parse_events_term **_term, int type_val,
1267 int type_term, char *config,
1268 char *str, u64 num)
1269 {
1270 struct parse_events_term *term;
1271
1272 term = zalloc(sizeof(*term));
1273 if (!term)
1274 return -ENOMEM;
1275
1276 INIT_LIST_HEAD(&term->list);
1277 term->type_val = type_val;
1278 term->type_term = type_term;
1279 term->config = config;
1280
1281 switch (type_val) {
1282 case PARSE_EVENTS__TERM_TYPE_NUM:
1283 term->val.num = num;
1284 break;
1285 case PARSE_EVENTS__TERM_TYPE_STR:
1286 term->val.str = str;
1287 break;
1288 default:
1289 free(term);
1290 return -EINVAL;
1291 }
1292
1293 *_term = term;
1294 return 0;
1295 }
1296
1297 int parse_events_term__num(struct parse_events_term **term,
1298 int type_term, char *config, u64 num)
1299 {
1300 return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
1301 config, NULL, num);
1302 }
1303
1304 int parse_events_term__str(struct parse_events_term **term,
1305 int type_term, char *config, char *str)
1306 {
1307 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
1308 config, str, 0);
1309 }
1310
1311 int parse_events_term__sym_hw(struct parse_events_term **term,
1312 char *config, unsigned idx)
1313 {
1314 struct event_symbol *sym;
1315
1316 BUG_ON(idx >= PERF_COUNT_HW_MAX);
1317 sym = &event_symbols_hw[idx];
1318
1319 if (config)
1320 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
1321 PARSE_EVENTS__TERM_TYPE_USER, config,
1322 (char *) sym->symbol, 0);
1323 else
1324 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
1325 PARSE_EVENTS__TERM_TYPE_USER,
1326 (char *) "event", (char *) sym->symbol, 0);
1327 }
1328
1329 int parse_events_term__clone(struct parse_events_term **new,
1330 struct parse_events_term *term)
1331 {
1332 return new_term(new, term->type_val, term->type_term, term->config,
1333 term->val.str, term->val.num);
1334 }
1335
1336 void parse_events__free_terms(struct list_head *terms)
1337 {
1338 struct parse_events_term *term, *h;
1339
1340 list_for_each_entry_safe(term, h, terms, list)
1341 free(term);
1342 }
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