1#include <linux/hw_breakpoint.h>
2#include <linux/err.h>
3#include "util.h"
4#include "../perf.h"
5#include "evlist.h"
6#include "evsel.h"
7#include <subcmd/parse-options.h>
8#include "parse-events.h"
9#include <subcmd/exec-cmd.h>
10#include "string.h"
11#include "symbol.h"
12#include "cache.h"
13#include "header.h"
14#include "bpf-loader.h"
15#include "debug.h"
16#include <api/fs/tracing_path.h>
17#include "parse-events-bison.h"
18#define YY_EXTRA_TYPE int
19#include "parse-events-flex.h"
20#include "pmu.h"
21#include "thread_map.h"
22#include "cpumap.h"
23#include "asm/bug.h"
24
25#define MAX_NAME_LEN 100
26
27#ifdef PARSER_DEBUG
28extern int parse_events_debug;
29#endif
30int parse_events_parse(void *data, void *scanner);
31static int get_config_terms(struct list_head *head_config,
32 struct list_head *head_terms __maybe_unused);
33
34static struct perf_pmu_event_symbol *perf_pmu_events_list;
35
36
37
38
39
40
41static int perf_pmu_events_list_num;
42
43struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
44 [PERF_COUNT_HW_CPU_CYCLES] = {
45 .symbol = "cpu-cycles",
46 .alias = "cycles",
47 },
48 [PERF_COUNT_HW_INSTRUCTIONS] = {
49 .symbol = "instructions",
50 .alias = "",
51 },
52 [PERF_COUNT_HW_CACHE_REFERENCES] = {
53 .symbol = "cache-references",
54 .alias = "",
55 },
56 [PERF_COUNT_HW_CACHE_MISSES] = {
57 .symbol = "cache-misses",
58 .alias = "",
59 },
60 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
61 .symbol = "branch-instructions",
62 .alias = "branches",
63 },
64 [PERF_COUNT_HW_BRANCH_MISSES] = {
65 .symbol = "branch-misses",
66 .alias = "",
67 },
68 [PERF_COUNT_HW_BUS_CYCLES] = {
69 .symbol = "bus-cycles",
70 .alias = "",
71 },
72 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
73 .symbol = "stalled-cycles-frontend",
74 .alias = "idle-cycles-frontend",
75 },
76 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
77 .symbol = "stalled-cycles-backend",
78 .alias = "idle-cycles-backend",
79 },
80 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
81 .symbol = "ref-cycles",
82 .alias = "",
83 },
84};
85
86struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
87 [PERF_COUNT_SW_CPU_CLOCK] = {
88 .symbol = "cpu-clock",
89 .alias = "",
90 },
91 [PERF_COUNT_SW_TASK_CLOCK] = {
92 .symbol = "task-clock",
93 .alias = "",
94 },
95 [PERF_COUNT_SW_PAGE_FAULTS] = {
96 .symbol = "page-faults",
97 .alias = "faults",
98 },
99 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
100 .symbol = "context-switches",
101 .alias = "cs",
102 },
103 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
104 .symbol = "cpu-migrations",
105 .alias = "migrations",
106 },
107 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
108 .symbol = "minor-faults",
109 .alias = "",
110 },
111 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
112 .symbol = "major-faults",
113 .alias = "",
114 },
115 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
116 .symbol = "alignment-faults",
117 .alias = "",
118 },
119 [PERF_COUNT_SW_EMULATION_FAULTS] = {
120 .symbol = "emulation-faults",
121 .alias = "",
122 },
123 [PERF_COUNT_SW_DUMMY] = {
124 .symbol = "dummy",
125 .alias = "",
126 },
127 [PERF_COUNT_SW_BPF_OUTPUT] = {
128 .symbol = "bpf-output",
129 .alias = "",
130 },
131};
132
133#define __PERF_EVENT_FIELD(config, name) \
134 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
135
136#define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
137#define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
138#define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
139#define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
140
141#define for_each_subsystem(sys_dir, sys_dirent) \
142 while ((sys_dirent = readdir(sys_dir)) != NULL) \
143 if (sys_dirent->d_type == DT_DIR && \
144 (strcmp(sys_dirent->d_name, ".")) && \
145 (strcmp(sys_dirent->d_name, "..")))
146
147static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
148{
149 char evt_path[MAXPATHLEN];
150 int fd;
151
152 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
153 sys_dir->d_name, evt_dir->d_name);
154 fd = open(evt_path, O_RDONLY);
155 if (fd < 0)
156 return -EINVAL;
157 close(fd);
158
159 return 0;
160}
161
162#define for_each_event(sys_dirent, evt_dir, evt_dirent) \
163 while ((evt_dirent = readdir(evt_dir)) != NULL) \
164 if (evt_dirent->d_type == DT_DIR && \
165 (strcmp(evt_dirent->d_name, ".")) && \
166 (strcmp(evt_dirent->d_name, "..")) && \
167 (!tp_event_has_id(sys_dirent, evt_dirent)))
168
169#define MAX_EVENT_LENGTH 512
170
171
172struct tracepoint_path *tracepoint_id_to_path(u64 config)
173{
174 struct tracepoint_path *path = NULL;
175 DIR *sys_dir, *evt_dir;
176 struct dirent *sys_dirent, *evt_dirent;
177 char id_buf[24];
178 int fd;
179 u64 id;
180 char evt_path[MAXPATHLEN];
181 char dir_path[MAXPATHLEN];
182
183 sys_dir = opendir(tracing_events_path);
184 if (!sys_dir)
185 return NULL;
186
187 for_each_subsystem(sys_dir, sys_dirent) {
188
189 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
190 sys_dirent->d_name);
191 evt_dir = opendir(dir_path);
192 if (!evt_dir)
193 continue;
194
195 for_each_event(sys_dirent, evt_dir, evt_dirent) {
196
197 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
198 evt_dirent->d_name);
199 fd = open(evt_path, O_RDONLY);
200 if (fd < 0)
201 continue;
202 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
203 close(fd);
204 continue;
205 }
206 close(fd);
207 id = atoll(id_buf);
208 if (id == config) {
209 closedir(evt_dir);
210 closedir(sys_dir);
211 path = zalloc(sizeof(*path));
212 path->system = malloc(MAX_EVENT_LENGTH);
213 if (!path->system) {
214 free(path);
215 return NULL;
216 }
217 path->name = malloc(MAX_EVENT_LENGTH);
218 if (!path->name) {
219 zfree(&path->system);
220 free(path);
221 return NULL;
222 }
223 strncpy(path->system, sys_dirent->d_name,
224 MAX_EVENT_LENGTH);
225 strncpy(path->name, evt_dirent->d_name,
226 MAX_EVENT_LENGTH);
227 return path;
228 }
229 }
230 closedir(evt_dir);
231 }
232
233 closedir(sys_dir);
234 return NULL;
235}
236
237struct tracepoint_path *tracepoint_name_to_path(const char *name)
238{
239 struct tracepoint_path *path = zalloc(sizeof(*path));
240 char *str = strchr(name, ':');
241
242 if (path == NULL || str == NULL) {
243 free(path);
244 return NULL;
245 }
246
247 path->system = strndup(name, str - name);
248 path->name = strdup(str+1);
249
250 if (path->system == NULL || path->name == NULL) {
251 zfree(&path->system);
252 zfree(&path->name);
253 free(path);
254 path = NULL;
255 }
256
257 return path;
258}
259
260const char *event_type(int type)
261{
262 switch (type) {
263 case PERF_TYPE_HARDWARE:
264 return "hardware";
265
266 case PERF_TYPE_SOFTWARE:
267 return "software";
268
269 case PERF_TYPE_TRACEPOINT:
270 return "tracepoint";
271
272 case PERF_TYPE_HW_CACHE:
273 return "hardware-cache";
274
275 default:
276 break;
277 }
278
279 return "unknown";
280}
281
282static int parse_events__is_name_term(struct parse_events_term *term)
283{
284 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
285}
286
287static char *get_config_name(struct list_head *head_terms)
288{
289 struct parse_events_term *term;
290
291 if (!head_terms)
292 return NULL;
293
294 list_for_each_entry(term, head_terms, list)
295 if (parse_events__is_name_term(term))
296 return term->val.str;
297
298 return NULL;
299}
300
301static struct perf_evsel *
302__add_event(struct list_head *list, int *idx,
303 struct perf_event_attr *attr,
304 char *name, struct cpu_map *cpus,
305 struct list_head *config_terms)
306{
307 struct perf_evsel *evsel;
308
309 event_attr_init(attr);
310
311 evsel = perf_evsel__new_idx(attr, (*idx)++);
312 if (!evsel)
313 return NULL;
314
315 evsel->cpus = cpu_map__get(cpus);
316 evsel->own_cpus = cpu_map__get(cpus);
317
318 if (name)
319 evsel->name = strdup(name);
320
321 if (config_terms)
322 list_splice(config_terms, &evsel->config_terms);
323
324 list_add_tail(&evsel->node, list);
325 return evsel;
326}
327
328static int add_event(struct list_head *list, int *idx,
329 struct perf_event_attr *attr, char *name,
330 struct list_head *config_terms)
331{
332 return __add_event(list, idx, attr, name, NULL, config_terms) ? 0 : -ENOMEM;
333}
334
335static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
336{
337 int i, j;
338 int n, longest = -1;
339
340 for (i = 0; i < size; i++) {
341 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
342 n = strlen(names[i][j]);
343 if (n > longest && !strncasecmp(str, names[i][j], n))
344 longest = n;
345 }
346 if (longest > 0)
347 return i;
348 }
349
350 return -1;
351}
352
353typedef int config_term_func_t(struct perf_event_attr *attr,
354 struct parse_events_term *term,
355 struct parse_events_error *err);
356static int config_term_common(struct perf_event_attr *attr,
357 struct parse_events_term *term,
358 struct parse_events_error *err);
359static int config_attr(struct perf_event_attr *attr,
360 struct list_head *head,
361 struct parse_events_error *err,
362 config_term_func_t config_term);
363
364int parse_events_add_cache(struct list_head *list, int *idx,
365 char *type, char *op_result1, char *op_result2,
366 struct parse_events_error *err,
367 struct list_head *head_config)
368{
369 struct perf_event_attr attr;
370 LIST_HEAD(config_terms);
371 char name[MAX_NAME_LEN], *config_name;
372 int cache_type = -1, cache_op = -1, cache_result = -1;
373 char *op_result[2] = { op_result1, op_result2 };
374 int i, n;
375
376
377
378
379
380 cache_type = parse_aliases(type, perf_evsel__hw_cache,
381 PERF_COUNT_HW_CACHE_MAX);
382 if (cache_type == -1)
383 return -EINVAL;
384
385 config_name = get_config_name(head_config);
386 n = snprintf(name, MAX_NAME_LEN, "%s", type);
387
388 for (i = 0; (i < 2) && (op_result[i]); i++) {
389 char *str = op_result[i];
390
391 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
392
393 if (cache_op == -1) {
394 cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
395 PERF_COUNT_HW_CACHE_OP_MAX);
396 if (cache_op >= 0) {
397 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
398 return -EINVAL;
399 continue;
400 }
401 }
402
403 if (cache_result == -1) {
404 cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
405 PERF_COUNT_HW_CACHE_RESULT_MAX);
406 if (cache_result >= 0)
407 continue;
408 }
409 }
410
411
412
413
414 if (cache_op == -1)
415 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
416
417
418
419
420 if (cache_result == -1)
421 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
422
423 memset(&attr, 0, sizeof(attr));
424 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
425 attr.type = PERF_TYPE_HW_CACHE;
426
427 if (head_config) {
428 if (config_attr(&attr, head_config, err,
429 config_term_common))
430 return -EINVAL;
431
432 if (get_config_terms(head_config, &config_terms))
433 return -ENOMEM;
434 }
435 return add_event(list, idx, &attr, config_name ? : name, &config_terms);
436}
437
438static void tracepoint_error(struct parse_events_error *e, int err,
439 char *sys, char *name)
440{
441 char help[BUFSIZ];
442
443 if (!e)
444 return;
445
446
447
448
449
450 err = abs(err);
451
452 switch (err) {
453 case EACCES:
454 e->str = strdup("can't access trace events");
455 break;
456 case ENOENT:
457 e->str = strdup("unknown tracepoint");
458 break;
459 default:
460 e->str = strdup("failed to add tracepoint");
461 break;
462 }
463
464 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
465 e->help = strdup(help);
466}
467
468static int add_tracepoint(struct list_head *list, int *idx,
469 char *sys_name, char *evt_name,
470 struct parse_events_error *err,
471 struct list_head *head_config)
472{
473 struct perf_evsel *evsel;
474
475 evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
476 if (IS_ERR(evsel)) {
477 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name);
478 return PTR_ERR(evsel);
479 }
480
481 if (head_config) {
482 LIST_HEAD(config_terms);
483
484 if (get_config_terms(head_config, &config_terms))
485 return -ENOMEM;
486 list_splice(&config_terms, &evsel->config_terms);
487 }
488
489 list_add_tail(&evsel->node, list);
490 return 0;
491}
492
493static int add_tracepoint_multi_event(struct list_head *list, int *idx,
494 char *sys_name, char *evt_name,
495 struct parse_events_error *err,
496 struct list_head *head_config)
497{
498 char evt_path[MAXPATHLEN];
499 struct dirent *evt_ent;
500 DIR *evt_dir;
501 int ret = 0, found = 0;
502
503 snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
504 evt_dir = opendir(evt_path);
505 if (!evt_dir) {
506 tracepoint_error(err, errno, sys_name, evt_name);
507 return -1;
508 }
509
510 while (!ret && (evt_ent = readdir(evt_dir))) {
511 if (!strcmp(evt_ent->d_name, ".")
512 || !strcmp(evt_ent->d_name, "..")
513 || !strcmp(evt_ent->d_name, "enable")
514 || !strcmp(evt_ent->d_name, "filter"))
515 continue;
516
517 if (!strglobmatch(evt_ent->d_name, evt_name))
518 continue;
519
520 found++;
521
522 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name,
523 err, head_config);
524 }
525
526 if (!found) {
527 tracepoint_error(err, ENOENT, sys_name, evt_name);
528 ret = -1;
529 }
530
531 closedir(evt_dir);
532 return ret;
533}
534
535static int add_tracepoint_event(struct list_head *list, int *idx,
536 char *sys_name, char *evt_name,
537 struct parse_events_error *err,
538 struct list_head *head_config)
539{
540 return strpbrk(evt_name, "*?") ?
541 add_tracepoint_multi_event(list, idx, sys_name, evt_name,
542 err, head_config) :
543 add_tracepoint(list, idx, sys_name, evt_name,
544 err, head_config);
545}
546
547static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
548 char *sys_name, char *evt_name,
549 struct parse_events_error *err,
550 struct list_head *head_config)
551{
552 struct dirent *events_ent;
553 DIR *events_dir;
554 int ret = 0;
555
556 events_dir = opendir(tracing_events_path);
557 if (!events_dir) {
558 tracepoint_error(err, errno, sys_name, evt_name);
559 return -1;
560 }
561
562 while (!ret && (events_ent = readdir(events_dir))) {
563 if (!strcmp(events_ent->d_name, ".")
564 || !strcmp(events_ent->d_name, "..")
565 || !strcmp(events_ent->d_name, "enable")
566 || !strcmp(events_ent->d_name, "header_event")
567 || !strcmp(events_ent->d_name, "header_page"))
568 continue;
569
570 if (!strglobmatch(events_ent->d_name, sys_name))
571 continue;
572
573 ret = add_tracepoint_event(list, idx, events_ent->d_name,
574 evt_name, err, head_config);
575 }
576
577 closedir(events_dir);
578 return ret;
579}
580
581struct __add_bpf_event_param {
582 struct parse_events_evlist *data;
583 struct list_head *list;
584 struct list_head *head_config;
585};
586
587static int add_bpf_event(struct probe_trace_event *tev, int fd,
588 void *_param)
589{
590 LIST_HEAD(new_evsels);
591 struct __add_bpf_event_param *param = _param;
592 struct parse_events_evlist *evlist = param->data;
593 struct list_head *list = param->list;
594 struct perf_evsel *pos;
595 int err;
596
597 pr_debug("add bpf event %s:%s and attach bpf program %d\n",
598 tev->group, tev->event, fd);
599
600 err = parse_events_add_tracepoint(&new_evsels, &evlist->idx, tev->group,
601 tev->event, evlist->error,
602 param->head_config);
603 if (err) {
604 struct perf_evsel *evsel, *tmp;
605
606 pr_debug("Failed to add BPF event %s:%s\n",
607 tev->group, tev->event);
608 list_for_each_entry_safe(evsel, tmp, &new_evsels, node) {
609 list_del(&evsel->node);
610 perf_evsel__delete(evsel);
611 }
612 return err;
613 }
614 pr_debug("adding %s:%s\n", tev->group, tev->event);
615
616 list_for_each_entry(pos, &new_evsels, node) {
617 pr_debug("adding %s:%s to %p\n",
618 tev->group, tev->event, pos);
619 pos->bpf_fd = fd;
620 }
621 list_splice(&new_evsels, list);
622 return 0;
623}
624
625int parse_events_load_bpf_obj(struct parse_events_evlist *data,
626 struct list_head *list,
627 struct bpf_object *obj,
628 struct list_head *head_config)
629{
630 int err;
631 char errbuf[BUFSIZ];
632 struct __add_bpf_event_param param = {data, list, head_config};
633 static bool registered_unprobe_atexit = false;
634
635 if (IS_ERR(obj) || !obj) {
636 snprintf(errbuf, sizeof(errbuf),
637 "Internal error: load bpf obj with NULL");
638 err = -EINVAL;
639 goto errout;
640 }
641
642
643
644
645
646
647 if (!registered_unprobe_atexit) {
648 atexit(bpf__clear);
649 registered_unprobe_atexit = true;
650 }
651
652 err = bpf__probe(obj);
653 if (err) {
654 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf));
655 goto errout;
656 }
657
658 err = bpf__load(obj);
659 if (err) {
660 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf));
661 goto errout;
662 }
663
664 err = bpf__foreach_tev(obj, add_bpf_event, ¶m);
665 if (err) {
666 snprintf(errbuf, sizeof(errbuf),
667 "Attach events in BPF object failed");
668 goto errout;
669 }
670
671 return 0;
672errout:
673 data->error->help = strdup("(add -v to see detail)");
674 data->error->str = strdup(errbuf);
675 return err;
676}
677
678static int
679parse_events_config_bpf(struct parse_events_evlist *data,
680 struct bpf_object *obj,
681 struct list_head *head_config)
682{
683 struct parse_events_term *term;
684 int error_pos;
685
686 if (!head_config || list_empty(head_config))
687 return 0;
688
689 list_for_each_entry(term, head_config, list) {
690 char errbuf[BUFSIZ];
691 int err;
692
693 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) {
694 snprintf(errbuf, sizeof(errbuf),
695 "Invalid config term for BPF object");
696 errbuf[BUFSIZ - 1] = '\0';
697
698 data->error->idx = term->err_term;
699 data->error->str = strdup(errbuf);
700 return -EINVAL;
701 }
702
703 err = bpf__config_obj(obj, term, data->evlist, &error_pos);
704 if (err) {
705 bpf__strerror_config_obj(obj, term, data->evlist,
706 &error_pos, err, errbuf,
707 sizeof(errbuf));
708 data->error->help = strdup(
709"Hint:\tValid config terms:\n"
710" \tmap:[<arraymap>].value<indices>=[value]\n"
711" \tmap:[<eventmap>].event<indices>=[event]\n"
712"\n"
713" \twhere <indices> is something like [0,3...5] or [all]\n"
714" \t(add -v to see detail)");
715 data->error->str = strdup(errbuf);
716 if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
717 data->error->idx = term->err_val;
718 else
719 data->error->idx = term->err_term + error_pos;
720 return err;
721 }
722 }
723 return 0;
724}
725
726
727
728
729
730
731
732
733
734
735
736static void
737split_bpf_config_terms(struct list_head *evt_head_config,
738 struct list_head *obj_head_config)
739{
740 struct parse_events_term *term, *temp;
741
742
743
744
745
746
747
748
749
750 list_for_each_entry_safe(term, temp, evt_head_config, list)
751 if (!parse_events__is_hardcoded_term(term))
752 list_move_tail(&term->list, obj_head_config);
753}
754
755int parse_events_load_bpf(struct parse_events_evlist *data,
756 struct list_head *list,
757 char *bpf_file_name,
758 bool source,
759 struct list_head *head_config)
760{
761 int err;
762 struct bpf_object *obj;
763 LIST_HEAD(obj_head_config);
764
765 if (head_config)
766 split_bpf_config_terms(head_config, &obj_head_config);
767
768 obj = bpf__prepare_load(bpf_file_name, source);
769 if (IS_ERR(obj)) {
770 char errbuf[BUFSIZ];
771
772 err = PTR_ERR(obj);
773
774 if (err == -ENOTSUP)
775 snprintf(errbuf, sizeof(errbuf),
776 "BPF support is not compiled");
777 else
778 bpf__strerror_prepare_load(bpf_file_name,
779 source,
780 -err, errbuf,
781 sizeof(errbuf));
782
783 data->error->help = strdup("(add -v to see detail)");
784 data->error->str = strdup(errbuf);
785 return err;
786 }
787
788 err = parse_events_load_bpf_obj(data, list, obj, head_config);
789 if (err)
790 return err;
791 err = parse_events_config_bpf(data, obj, &obj_head_config);
792
793
794
795
796
797 if (head_config)
798 list_splice_tail(&obj_head_config, head_config);
799 return err;
800}
801
802static int
803parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
804{
805 int i;
806
807 for (i = 0; i < 3; i++) {
808 if (!type || !type[i])
809 break;
810
811#define CHECK_SET_TYPE(bit) \
812do { \
813 if (attr->bp_type & bit) \
814 return -EINVAL; \
815 else \
816 attr->bp_type |= bit; \
817} while (0)
818
819 switch (type[i]) {
820 case 'r':
821 CHECK_SET_TYPE(HW_BREAKPOINT_R);
822 break;
823 case 'w':
824 CHECK_SET_TYPE(HW_BREAKPOINT_W);
825 break;
826 case 'x':
827 CHECK_SET_TYPE(HW_BREAKPOINT_X);
828 break;
829 default:
830 return -EINVAL;
831 }
832 }
833
834#undef CHECK_SET_TYPE
835
836 if (!attr->bp_type)
837 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
838
839 return 0;
840}
841
842int parse_events_add_breakpoint(struct list_head *list, int *idx,
843 void *ptr, char *type, u64 len)
844{
845 struct perf_event_attr attr;
846
847 memset(&attr, 0, sizeof(attr));
848 attr.bp_addr = (unsigned long) ptr;
849
850 if (parse_breakpoint_type(type, &attr))
851 return -EINVAL;
852
853
854 if (!len) {
855 if (attr.bp_type == HW_BREAKPOINT_X)
856 len = sizeof(long);
857 else
858 len = HW_BREAKPOINT_LEN_4;
859 }
860
861 attr.bp_len = len;
862
863 attr.type = PERF_TYPE_BREAKPOINT;
864 attr.sample_period = 1;
865
866 return add_event(list, idx, &attr, NULL, NULL);
867}
868
869static int check_type_val(struct parse_events_term *term,
870 struct parse_events_error *err,
871 int type)
872{
873 if (type == term->type_val)
874 return 0;
875
876 if (err) {
877 err->idx = term->err_val;
878 if (type == PARSE_EVENTS__TERM_TYPE_NUM)
879 err->str = strdup("expected numeric value");
880 else
881 err->str = strdup("expected string value");
882 }
883 return -EINVAL;
884}
885
886
887
888
889static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
890 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>",
891 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config",
892 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1",
893 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2",
894 [PARSE_EVENTS__TERM_TYPE_NAME] = "name",
895 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period",
896 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq",
897 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type",
898 [PARSE_EVENTS__TERM_TYPE_TIME] = "time",
899 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph",
900 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size",
901 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit",
902 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit",
903};
904
905static bool config_term_shrinked;
906
907static bool
908config_term_avail(int term_type, struct parse_events_error *err)
909{
910 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
911 err->str = strdup("Invalid term_type");
912 return false;
913 }
914 if (!config_term_shrinked)
915 return true;
916
917 switch (term_type) {
918 case PARSE_EVENTS__TERM_TYPE_CONFIG:
919 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
920 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
921 case PARSE_EVENTS__TERM_TYPE_NAME:
922 return true;
923 default:
924 if (!err)
925 return false;
926
927
928 if (asprintf(&err->str, "'%s' is not usable in 'perf stat'",
929 config_term_names[term_type]) < 0)
930 err->str = NULL;
931 return false;
932 }
933}
934
935void parse_events__shrink_config_terms(void)
936{
937 config_term_shrinked = true;
938}
939
940static int config_term_common(struct perf_event_attr *attr,
941 struct parse_events_term *term,
942 struct parse_events_error *err)
943{
944#define CHECK_TYPE_VAL(type) \
945do { \
946 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
947 return -EINVAL; \
948} while (0)
949
950 switch (term->type_term) {
951 case PARSE_EVENTS__TERM_TYPE_CONFIG:
952 CHECK_TYPE_VAL(NUM);
953 attr->config = term->val.num;
954 break;
955 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
956 CHECK_TYPE_VAL(NUM);
957 attr->config1 = term->val.num;
958 break;
959 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
960 CHECK_TYPE_VAL(NUM);
961 attr->config2 = term->val.num;
962 break;
963 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
964 CHECK_TYPE_VAL(NUM);
965 break;
966 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
967 CHECK_TYPE_VAL(NUM);
968 break;
969 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
970
971
972
973
974 break;
975 case PARSE_EVENTS__TERM_TYPE_TIME:
976 CHECK_TYPE_VAL(NUM);
977 if (term->val.num > 1) {
978 err->str = strdup("expected 0 or 1");
979 err->idx = term->err_val;
980 return -EINVAL;
981 }
982 break;
983 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
984 CHECK_TYPE_VAL(STR);
985 break;
986 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
987 CHECK_TYPE_VAL(NUM);
988 break;
989 case PARSE_EVENTS__TERM_TYPE_INHERIT:
990 CHECK_TYPE_VAL(NUM);
991 break;
992 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
993 CHECK_TYPE_VAL(NUM);
994 break;
995 case PARSE_EVENTS__TERM_TYPE_NAME:
996 CHECK_TYPE_VAL(STR);
997 break;
998 default:
999 err->str = strdup("unknown term");
1000 err->idx = term->err_term;
1001 err->help = parse_events_formats_error_string(NULL);
1002 return -EINVAL;
1003 }
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014 if (!config_term_avail(term->type_term, err))
1015 return -EINVAL;
1016 return 0;
1017#undef CHECK_TYPE_VAL
1018}
1019
1020static int config_term_pmu(struct perf_event_attr *attr,
1021 struct parse_events_term *term,
1022 struct parse_events_error *err)
1023{
1024 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER)
1025
1026
1027
1028
1029 return 0;
1030 else
1031 return config_term_common(attr, term, err);
1032}
1033
1034static int config_term_tracepoint(struct perf_event_attr *attr,
1035 struct parse_events_term *term,
1036 struct parse_events_error *err)
1037{
1038 switch (term->type_term) {
1039 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1040 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1041 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1042 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1043 return config_term_common(attr, term, err);
1044 default:
1045 if (err) {
1046 err->idx = term->err_term;
1047 err->str = strdup("unknown term");
1048 err->help = strdup("valid terms: call-graph,stack-size\n");
1049 }
1050 return -EINVAL;
1051 }
1052
1053 return 0;
1054}
1055
1056static int config_attr(struct perf_event_attr *attr,
1057 struct list_head *head,
1058 struct parse_events_error *err,
1059 config_term_func_t config_term)
1060{
1061 struct parse_events_term *term;
1062
1063 list_for_each_entry(term, head, list)
1064 if (config_term(attr, term, err))
1065 return -EINVAL;
1066
1067 return 0;
1068}
1069
1070static int get_config_terms(struct list_head *head_config,
1071 struct list_head *head_terms __maybe_unused)
1072{
1073#define ADD_CONFIG_TERM(__type, __name, __val) \
1074do { \
1075 struct perf_evsel_config_term *__t; \
1076 \
1077 __t = zalloc(sizeof(*__t)); \
1078 if (!__t) \
1079 return -ENOMEM; \
1080 \
1081 INIT_LIST_HEAD(&__t->list); \
1082 __t->type = PERF_EVSEL__CONFIG_TERM_ ## __type; \
1083 __t->val.__name = __val; \
1084 list_add_tail(&__t->list, head_terms); \
1085} while (0)
1086
1087 struct parse_events_term *term;
1088
1089 list_for_each_entry(term, head_config, list) {
1090 switch (term->type_term) {
1091 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1092 ADD_CONFIG_TERM(PERIOD, period, term->val.num);
1093 break;
1094 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1095 ADD_CONFIG_TERM(FREQ, freq, term->val.num);
1096 break;
1097 case PARSE_EVENTS__TERM_TYPE_TIME:
1098 ADD_CONFIG_TERM(TIME, time, term->val.num);
1099 break;
1100 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1101 ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str);
1102 break;
1103 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1104 ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num);
1105 break;
1106 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1107 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 1 : 0);
1108 break;
1109 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1110 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
1111 break;
1112 default:
1113 break;
1114 }
1115 }
1116#undef ADD_EVSEL_CONFIG
1117 return 0;
1118}
1119
1120int parse_events_add_tracepoint(struct list_head *list, int *idx,
1121 char *sys, char *event,
1122 struct parse_events_error *err,
1123 struct list_head *head_config)
1124{
1125 if (head_config) {
1126 struct perf_event_attr attr;
1127
1128 if (config_attr(&attr, head_config, err,
1129 config_term_tracepoint))
1130 return -EINVAL;
1131 }
1132
1133 if (strpbrk(sys, "*?"))
1134 return add_tracepoint_multi_sys(list, idx, sys, event,
1135 err, head_config);
1136 else
1137 return add_tracepoint_event(list, idx, sys, event,
1138 err, head_config);
1139}
1140
1141int parse_events_add_numeric(struct parse_events_evlist *data,
1142 struct list_head *list,
1143 u32 type, u64 config,
1144 struct list_head *head_config)
1145{
1146 struct perf_event_attr attr;
1147 LIST_HEAD(config_terms);
1148
1149 memset(&attr, 0, sizeof(attr));
1150 attr.type = type;
1151 attr.config = config;
1152
1153 if (head_config) {
1154 if (config_attr(&attr, head_config, data->error,
1155 config_term_common))
1156 return -EINVAL;
1157
1158 if (get_config_terms(head_config, &config_terms))
1159 return -ENOMEM;
1160 }
1161
1162 return add_event(list, &data->idx, &attr,
1163 get_config_name(head_config), &config_terms);
1164}
1165
1166int parse_events_add_pmu(struct parse_events_evlist *data,
1167 struct list_head *list, char *name,
1168 struct list_head *head_config)
1169{
1170 struct perf_event_attr attr;
1171 struct perf_pmu_info info;
1172 struct perf_pmu *pmu;
1173 struct perf_evsel *evsel;
1174 LIST_HEAD(config_terms);
1175
1176 pmu = perf_pmu__find(name);
1177 if (!pmu)
1178 return -EINVAL;
1179
1180 if (pmu->default_config) {
1181 memcpy(&attr, pmu->default_config,
1182 sizeof(struct perf_event_attr));
1183 } else {
1184 memset(&attr, 0, sizeof(attr));
1185 }
1186
1187 if (!head_config) {
1188 attr.type = pmu->type;
1189 evsel = __add_event(list, &data->idx, &attr, NULL, pmu->cpus, NULL);
1190 return evsel ? 0 : -ENOMEM;
1191 }
1192
1193 if (perf_pmu__check_alias(pmu, head_config, &info))
1194 return -EINVAL;
1195
1196
1197
1198
1199
1200 if (config_attr(&attr, head_config, data->error, config_term_pmu))
1201 return -EINVAL;
1202
1203 if (get_config_terms(head_config, &config_terms))
1204 return -ENOMEM;
1205
1206 if (perf_pmu__config(pmu, &attr, head_config, data->error))
1207 return -EINVAL;
1208
1209 evsel = __add_event(list, &data->idx, &attr,
1210 get_config_name(head_config), pmu->cpus,
1211 &config_terms);
1212 if (evsel) {
1213 evsel->unit = info.unit;
1214 evsel->scale = info.scale;
1215 evsel->per_pkg = info.per_pkg;
1216 evsel->snapshot = info.snapshot;
1217 }
1218
1219 return evsel ? 0 : -ENOMEM;
1220}
1221
1222int parse_events__modifier_group(struct list_head *list,
1223 char *event_mod)
1224{
1225 return parse_events__modifier_event(list, event_mod, true);
1226}
1227
1228void parse_events__set_leader(char *name, struct list_head *list)
1229{
1230 struct perf_evsel *leader;
1231
1232 if (list_empty(list)) {
1233 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1234 return;
1235 }
1236
1237 __perf_evlist__set_leader(list);
1238 leader = list_entry(list->next, struct perf_evsel, node);
1239 leader->group_name = name ? strdup(name) : NULL;
1240}
1241
1242
1243void parse_events_update_lists(struct list_head *list_event,
1244 struct list_head *list_all)
1245{
1246
1247
1248
1249
1250
1251 list_splice_tail(list_event, list_all);
1252 free(list_event);
1253}
1254
1255struct event_modifier {
1256 int eu;
1257 int ek;
1258 int eh;
1259 int eH;
1260 int eG;
1261 int eI;
1262 int precise;
1263 int precise_max;
1264 int exclude_GH;
1265 int sample_read;
1266 int pinned;
1267};
1268
1269static int get_event_modifier(struct event_modifier *mod, char *str,
1270 struct perf_evsel *evsel)
1271{
1272 int eu = evsel ? evsel->attr.exclude_user : 0;
1273 int ek = evsel ? evsel->attr.exclude_kernel : 0;
1274 int eh = evsel ? evsel->attr.exclude_hv : 0;
1275 int eH = evsel ? evsel->attr.exclude_host : 0;
1276 int eG = evsel ? evsel->attr.exclude_guest : 0;
1277 int eI = evsel ? evsel->attr.exclude_idle : 0;
1278 int precise = evsel ? evsel->attr.precise_ip : 0;
1279 int precise_max = 0;
1280 int sample_read = 0;
1281 int pinned = evsel ? evsel->attr.pinned : 0;
1282
1283 int exclude = eu | ek | eh;
1284 int exclude_GH = evsel ? evsel->exclude_GH : 0;
1285
1286 memset(mod, 0, sizeof(*mod));
1287
1288 while (*str) {
1289 if (*str == 'u') {
1290 if (!exclude)
1291 exclude = eu = ek = eh = 1;
1292 eu = 0;
1293 } else if (*str == 'k') {
1294 if (!exclude)
1295 exclude = eu = ek = eh = 1;
1296 ek = 0;
1297 } else if (*str == 'h') {
1298 if (!exclude)
1299 exclude = eu = ek = eh = 1;
1300 eh = 0;
1301 } else if (*str == 'G') {
1302 if (!exclude_GH)
1303 exclude_GH = eG = eH = 1;
1304 eG = 0;
1305 } else if (*str == 'H') {
1306 if (!exclude_GH)
1307 exclude_GH = eG = eH = 1;
1308 eH = 0;
1309 } else if (*str == 'I') {
1310 eI = 1;
1311 } else if (*str == 'p') {
1312 precise++;
1313
1314 if (!exclude_GH)
1315 eG = 1;
1316 } else if (*str == 'P') {
1317 precise_max = 1;
1318 } else if (*str == 'S') {
1319 sample_read = 1;
1320 } else if (*str == 'D') {
1321 pinned = 1;
1322 } else
1323 break;
1324
1325 ++str;
1326 }
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338 if (precise > 3)
1339 return -EINVAL;
1340
1341 mod->eu = eu;
1342 mod->ek = ek;
1343 mod->eh = eh;
1344 mod->eH = eH;
1345 mod->eG = eG;
1346 mod->eI = eI;
1347 mod->precise = precise;
1348 mod->precise_max = precise_max;
1349 mod->exclude_GH = exclude_GH;
1350 mod->sample_read = sample_read;
1351 mod->pinned = pinned;
1352
1353 return 0;
1354}
1355
1356
1357
1358
1359
1360static int check_modifier(char *str)
1361{
1362 char *p = str;
1363
1364
1365 if (strlen(str) > (sizeof("ukhGHpppPSDI") - 1))
1366 return -1;
1367
1368 while (*p) {
1369 if (*p != 'p' && strchr(p + 1, *p))
1370 return -1;
1371 p++;
1372 }
1373
1374 return 0;
1375}
1376
1377int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1378{
1379 struct perf_evsel *evsel;
1380 struct event_modifier mod;
1381
1382 if (str == NULL)
1383 return 0;
1384
1385 if (check_modifier(str))
1386 return -EINVAL;
1387
1388 if (!add && get_event_modifier(&mod, str, NULL))
1389 return -EINVAL;
1390
1391 __evlist__for_each(list, evsel) {
1392 if (add && get_event_modifier(&mod, str, evsel))
1393 return -EINVAL;
1394
1395 evsel->attr.exclude_user = mod.eu;
1396 evsel->attr.exclude_kernel = mod.ek;
1397 evsel->attr.exclude_hv = mod.eh;
1398 evsel->attr.precise_ip = mod.precise;
1399 evsel->attr.exclude_host = mod.eH;
1400 evsel->attr.exclude_guest = mod.eG;
1401 evsel->attr.exclude_idle = mod.eI;
1402 evsel->exclude_GH = mod.exclude_GH;
1403 evsel->sample_read = mod.sample_read;
1404 evsel->precise_max = mod.precise_max;
1405
1406 if (perf_evsel__is_group_leader(evsel))
1407 evsel->attr.pinned = mod.pinned;
1408 }
1409
1410 return 0;
1411}
1412
1413int parse_events_name(struct list_head *list, char *name)
1414{
1415 struct perf_evsel *evsel;
1416
1417 __evlist__for_each(list, evsel) {
1418 if (!evsel->name)
1419 evsel->name = strdup(name);
1420 }
1421
1422 return 0;
1423}
1424
1425static int
1426comp_pmu(const void *p1, const void *p2)
1427{
1428 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
1429 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
1430
1431 return strcmp(pmu1->symbol, pmu2->symbol);
1432}
1433
1434static void perf_pmu__parse_cleanup(void)
1435{
1436 if (perf_pmu_events_list_num > 0) {
1437 struct perf_pmu_event_symbol *p;
1438 int i;
1439
1440 for (i = 0; i < perf_pmu_events_list_num; i++) {
1441 p = perf_pmu_events_list + i;
1442 free(p->symbol);
1443 }
1444 free(perf_pmu_events_list);
1445 perf_pmu_events_list = NULL;
1446 perf_pmu_events_list_num = 0;
1447 }
1448}
1449
1450#define SET_SYMBOL(str, stype) \
1451do { \
1452 p->symbol = str; \
1453 if (!p->symbol) \
1454 goto err; \
1455 p->type = stype; \
1456} while (0)
1457
1458
1459
1460
1461
1462static void perf_pmu__parse_init(void)
1463{
1464
1465 struct perf_pmu *pmu = NULL;
1466 struct perf_pmu_alias *alias;
1467 int len = 0;
1468
1469 pmu = perf_pmu__find("cpu");
1470 if ((pmu == NULL) || list_empty(&pmu->aliases)) {
1471 perf_pmu_events_list_num = -1;
1472 return;
1473 }
1474 list_for_each_entry(alias, &pmu->aliases, list) {
1475 if (strchr(alias->name, '-'))
1476 len++;
1477 len++;
1478 }
1479 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
1480 if (!perf_pmu_events_list)
1481 return;
1482 perf_pmu_events_list_num = len;
1483
1484 len = 0;
1485 list_for_each_entry(alias, &pmu->aliases, list) {
1486 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
1487 char *tmp = strchr(alias->name, '-');
1488
1489 if (tmp != NULL) {
1490 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
1491 PMU_EVENT_SYMBOL_PREFIX);
1492 p++;
1493 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
1494 len += 2;
1495 } else {
1496 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
1497 len++;
1498 }
1499 }
1500 qsort(perf_pmu_events_list, len,
1501 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1502
1503 return;
1504err:
1505 perf_pmu__parse_cleanup();
1506}
1507
1508enum perf_pmu_event_symbol_type
1509perf_pmu__parse_check(const char *name)
1510{
1511 struct perf_pmu_event_symbol p, *r;
1512
1513
1514 if (perf_pmu_events_list_num == 0)
1515 perf_pmu__parse_init();
1516
1517
1518
1519
1520
1521 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
1522 return PMU_EVENT_SYMBOL_ERR;
1523
1524 p.symbol = strdup(name);
1525 r = bsearch(&p, perf_pmu_events_list,
1526 (size_t) perf_pmu_events_list_num,
1527 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1528 free(p.symbol);
1529 return r ? r->type : PMU_EVENT_SYMBOL_ERR;
1530}
1531
1532static int parse_events__scanner(const char *str, void *data, int start_token)
1533{
1534 YY_BUFFER_STATE buffer;
1535 void *scanner;
1536 int ret;
1537
1538 ret = parse_events_lex_init_extra(start_token, &scanner);
1539 if (ret)
1540 return ret;
1541
1542 buffer = parse_events__scan_string(str, scanner);
1543
1544#ifdef PARSER_DEBUG
1545 parse_events_debug = 1;
1546#endif
1547 ret = parse_events_parse(data, scanner);
1548
1549 parse_events__flush_buffer(buffer, scanner);
1550 parse_events__delete_buffer(buffer, scanner);
1551 parse_events_lex_destroy(scanner);
1552 return ret;
1553}
1554
1555
1556
1557
1558int parse_events_terms(struct list_head *terms, const char *str)
1559{
1560 struct parse_events_terms data = {
1561 .terms = NULL,
1562 };
1563 int ret;
1564
1565 ret = parse_events__scanner(str, &data, PE_START_TERMS);
1566 if (!ret) {
1567 list_splice(data.terms, terms);
1568 zfree(&data.terms);
1569 return 0;
1570 }
1571
1572 parse_events_terms__delete(data.terms);
1573 return ret;
1574}
1575
1576int parse_events(struct perf_evlist *evlist, const char *str,
1577 struct parse_events_error *err)
1578{
1579 struct parse_events_evlist data = {
1580 .list = LIST_HEAD_INIT(data.list),
1581 .idx = evlist->nr_entries,
1582 .error = err,
1583 .evlist = evlist,
1584 };
1585 int ret;
1586
1587 ret = parse_events__scanner(str, &data, PE_START_EVENTS);
1588 perf_pmu__parse_cleanup();
1589 if (!ret) {
1590 struct perf_evsel *last;
1591
1592 if (list_empty(&data.list)) {
1593 WARN_ONCE(true, "WARNING: event parser found nothing");
1594 return -1;
1595 }
1596
1597 perf_evlist__splice_list_tail(evlist, &data.list);
1598 evlist->nr_groups += data.nr_groups;
1599 last = perf_evlist__last(evlist);
1600 last->cmdline_group_boundary = true;
1601
1602 return 0;
1603 }
1604
1605
1606
1607
1608
1609
1610 return ret;
1611}
1612
1613#define MAX_WIDTH 1000
1614static int get_term_width(void)
1615{
1616 struct winsize ws;
1617
1618 get_term_dimensions(&ws);
1619 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
1620}
1621
1622static void parse_events_print_error(struct parse_events_error *err,
1623 const char *event)
1624{
1625 const char *str = "invalid or unsupported event: ";
1626 char _buf[MAX_WIDTH];
1627 char *buf = (char *) event;
1628 int idx = 0;
1629
1630 if (err->str) {
1631
1632 int width = get_term_width() - 2;
1633 int len_event = strlen(event);
1634 int len_str, max_len, cut = 0;
1635
1636
1637
1638
1639
1640 int max_err_idx = 13;
1641
1642
1643
1644
1645
1646 str = "event syntax error: ";
1647 len_str = strlen(str);
1648 max_len = width - len_str;
1649
1650 buf = _buf;
1651
1652
1653 if (err->idx > max_err_idx)
1654 cut = err->idx - max_err_idx;
1655
1656 strncpy(buf, event + cut, max_len);
1657
1658
1659 if (cut)
1660 buf[0] = buf[1] = '.';
1661
1662 if ((len_event - cut) > max_len) {
1663 buf[max_len - 1] = buf[max_len - 2] = '.';
1664 buf[max_len] = 0;
1665 }
1666
1667 idx = len_str + err->idx - cut;
1668 }
1669
1670 fprintf(stderr, "%s'%s'\n", str, buf);
1671 if (idx) {
1672 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err->str);
1673 if (err->help)
1674 fprintf(stderr, "\n%s\n", err->help);
1675 free(err->str);
1676 free(err->help);
1677 }
1678
1679 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1680}
1681
1682#undef MAX_WIDTH
1683
1684int parse_events_option(const struct option *opt, const char *str,
1685 int unset __maybe_unused)
1686{
1687 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1688 struct parse_events_error err = { .idx = 0, };
1689 int ret = parse_events(evlist, str, &err);
1690
1691 if (ret)
1692 parse_events_print_error(&err, str);
1693
1694 return ret;
1695}
1696
1697static int
1698foreach_evsel_in_last_glob(struct perf_evlist *evlist,
1699 int (*func)(struct perf_evsel *evsel,
1700 const void *arg),
1701 const void *arg)
1702{
1703 struct perf_evsel *last = NULL;
1704 int err;
1705
1706
1707
1708
1709
1710
1711
1712 if (evlist->nr_entries > 0)
1713 last = perf_evlist__last(evlist);
1714
1715 do {
1716 err = (*func)(last, arg);
1717 if (err)
1718 return -1;
1719 if (!last)
1720 return 0;
1721
1722 if (last->node.prev == &evlist->entries)
1723 return 0;
1724 last = list_entry(last->node.prev, struct perf_evsel, node);
1725 } while (!last->cmdline_group_boundary);
1726
1727 return 0;
1728}
1729
1730static int set_filter(struct perf_evsel *evsel, const void *arg)
1731{
1732 const char *str = arg;
1733
1734 if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) {
1735 fprintf(stderr,
1736 "--filter option should follow a -e tracepoint option\n");
1737 return -1;
1738 }
1739
1740 if (perf_evsel__append_filter(evsel, "&&", str) < 0) {
1741 fprintf(stderr,
1742 "not enough memory to hold filter string\n");
1743 return -1;
1744 }
1745
1746 return 0;
1747}
1748
1749int parse_filter(const struct option *opt, const char *str,
1750 int unset __maybe_unused)
1751{
1752 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1753
1754 return foreach_evsel_in_last_glob(evlist, set_filter,
1755 (const void *)str);
1756}
1757
1758static int add_exclude_perf_filter(struct perf_evsel *evsel,
1759 const void *arg __maybe_unused)
1760{
1761 char new_filter[64];
1762
1763 if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) {
1764 fprintf(stderr,
1765 "--exclude-perf option should follow a -e tracepoint option\n");
1766 return -1;
1767 }
1768
1769 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
1770
1771 if (perf_evsel__append_filter(evsel, "&&", new_filter) < 0) {
1772 fprintf(stderr,
1773 "not enough memory to hold filter string\n");
1774 return -1;
1775 }
1776
1777 return 0;
1778}
1779
1780int exclude_perf(const struct option *opt,
1781 const char *arg __maybe_unused,
1782 int unset __maybe_unused)
1783{
1784 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1785
1786 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
1787 NULL);
1788}
1789
1790static const char * const event_type_descriptors[] = {
1791 "Hardware event",
1792 "Software event",
1793 "Tracepoint event",
1794 "Hardware cache event",
1795 "Raw hardware event descriptor",
1796 "Hardware breakpoint",
1797};
1798
1799static int cmp_string(const void *a, const void *b)
1800{
1801 const char * const *as = a;
1802 const char * const *bs = b;
1803
1804 return strcmp(*as, *bs);
1805}
1806
1807
1808
1809
1810
1811void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1812 bool name_only)
1813{
1814 DIR *sys_dir, *evt_dir;
1815 struct dirent *sys_dirent, *evt_dirent;
1816 char evt_path[MAXPATHLEN];
1817 char dir_path[MAXPATHLEN];
1818 char **evt_list = NULL;
1819 unsigned int evt_i = 0, evt_num = 0;
1820 bool evt_num_known = false;
1821
1822restart:
1823 sys_dir = opendir(tracing_events_path);
1824 if (!sys_dir)
1825 return;
1826
1827 if (evt_num_known) {
1828 evt_list = zalloc(sizeof(char *) * evt_num);
1829 if (!evt_list)
1830 goto out_close_sys_dir;
1831 }
1832
1833 for_each_subsystem(sys_dir, sys_dirent) {
1834 if (subsys_glob != NULL &&
1835 !strglobmatch(sys_dirent->d_name, subsys_glob))
1836 continue;
1837
1838 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1839 sys_dirent->d_name);
1840 evt_dir = opendir(dir_path);
1841 if (!evt_dir)
1842 continue;
1843
1844 for_each_event(sys_dirent, evt_dir, evt_dirent) {
1845 if (event_glob != NULL &&
1846 !strglobmatch(evt_dirent->d_name, event_glob))
1847 continue;
1848
1849 if (!evt_num_known) {
1850 evt_num++;
1851 continue;
1852 }
1853
1854 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1855 sys_dirent->d_name, evt_dirent->d_name);
1856
1857 evt_list[evt_i] = strdup(evt_path);
1858 if (evt_list[evt_i] == NULL)
1859 goto out_close_evt_dir;
1860 evt_i++;
1861 }
1862 closedir(evt_dir);
1863 }
1864 closedir(sys_dir);
1865
1866 if (!evt_num_known) {
1867 evt_num_known = true;
1868 goto restart;
1869 }
1870 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
1871 evt_i = 0;
1872 while (evt_i < evt_num) {
1873 if (name_only) {
1874 printf("%s ", evt_list[evt_i++]);
1875 continue;
1876 }
1877 printf(" %-50s [%s]\n", evt_list[evt_i++],
1878 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1879 }
1880 if (evt_num && pager_in_use())
1881 printf("\n");
1882
1883out_free:
1884 evt_num = evt_i;
1885 for (evt_i = 0; evt_i < evt_num; evt_i++)
1886 zfree(&evt_list[evt_i]);
1887 zfree(&evt_list);
1888 return;
1889
1890out_close_evt_dir:
1891 closedir(evt_dir);
1892out_close_sys_dir:
1893 closedir(sys_dir);
1894
1895 printf("FATAL: not enough memory to print %s\n",
1896 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
1897 if (evt_list)
1898 goto out_free;
1899}
1900
1901
1902
1903
1904
1905int is_valid_tracepoint(const char *event_string)
1906{
1907 DIR *sys_dir, *evt_dir;
1908 struct dirent *sys_dirent, *evt_dirent;
1909 char evt_path[MAXPATHLEN];
1910 char dir_path[MAXPATHLEN];
1911
1912 sys_dir = opendir(tracing_events_path);
1913 if (!sys_dir)
1914 return 0;
1915
1916 for_each_subsystem(sys_dir, sys_dirent) {
1917
1918 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1919 sys_dirent->d_name);
1920 evt_dir = opendir(dir_path);
1921 if (!evt_dir)
1922 continue;
1923
1924 for_each_event(sys_dirent, evt_dir, evt_dirent) {
1925 snprintf(evt_path, MAXPATHLEN, "%s:%s",
1926 sys_dirent->d_name, evt_dirent->d_name);
1927 if (!strcmp(evt_path, event_string)) {
1928 closedir(evt_dir);
1929 closedir(sys_dir);
1930 return 1;
1931 }
1932 }
1933 closedir(evt_dir);
1934 }
1935 closedir(sys_dir);
1936 return 0;
1937}
1938
1939static bool is_event_supported(u8 type, unsigned config)
1940{
1941 bool ret = true;
1942 int open_return;
1943 struct perf_evsel *evsel;
1944 struct perf_event_attr attr = {
1945 .type = type,
1946 .config = config,
1947 .disabled = 1,
1948 };
1949 struct {
1950 struct thread_map map;
1951 int threads[1];
1952 } tmap = {
1953 .map.nr = 1,
1954 .threads = { 0 },
1955 };
1956
1957 evsel = perf_evsel__new(&attr);
1958 if (evsel) {
1959 open_return = perf_evsel__open(evsel, NULL, &tmap.map);
1960 ret = open_return >= 0;
1961
1962 if (open_return == -EACCES) {
1963
1964
1965
1966
1967
1968
1969
1970 evsel->attr.exclude_kernel = 1;
1971 ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
1972 }
1973 perf_evsel__delete(evsel);
1974 }
1975
1976 return ret;
1977}
1978
1979int print_hwcache_events(const char *event_glob, bool name_only)
1980{
1981 unsigned int type, op, i, evt_i = 0, evt_num = 0;
1982 char name[64];
1983 char **evt_list = NULL;
1984 bool evt_num_known = false;
1985
1986restart:
1987 if (evt_num_known) {
1988 evt_list = zalloc(sizeof(char *) * evt_num);
1989 if (!evt_list)
1990 goto out_enomem;
1991 }
1992
1993 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
1994 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
1995
1996 if (!perf_evsel__is_cache_op_valid(type, op))
1997 continue;
1998
1999 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
2000 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
2001 name, sizeof(name));
2002 if (event_glob != NULL && !strglobmatch(name, event_glob))
2003 continue;
2004
2005 if (!is_event_supported(PERF_TYPE_HW_CACHE,
2006 type | (op << 8) | (i << 16)))
2007 continue;
2008
2009 if (!evt_num_known) {
2010 evt_num++;
2011 continue;
2012 }
2013
2014 evt_list[evt_i] = strdup(name);
2015 if (evt_list[evt_i] == NULL)
2016 goto out_enomem;
2017 evt_i++;
2018 }
2019 }
2020 }
2021
2022 if (!evt_num_known) {
2023 evt_num_known = true;
2024 goto restart;
2025 }
2026 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2027 evt_i = 0;
2028 while (evt_i < evt_num) {
2029 if (name_only) {
2030 printf("%s ", evt_list[evt_i++]);
2031 continue;
2032 }
2033 printf(" %-50s [%s]\n", evt_list[evt_i++],
2034 event_type_descriptors[PERF_TYPE_HW_CACHE]);
2035 }
2036 if (evt_num && pager_in_use())
2037 printf("\n");
2038
2039out_free:
2040 evt_num = evt_i;
2041 for (evt_i = 0; evt_i < evt_num; evt_i++)
2042 zfree(&evt_list[evt_i]);
2043 zfree(&evt_list);
2044 return evt_num;
2045
2046out_enomem:
2047 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]);
2048 if (evt_list)
2049 goto out_free;
2050 return evt_num;
2051}
2052
2053void print_symbol_events(const char *event_glob, unsigned type,
2054 struct event_symbol *syms, unsigned max,
2055 bool name_only)
2056{
2057 unsigned int i, evt_i = 0, evt_num = 0;
2058 char name[MAX_NAME_LEN];
2059 char **evt_list = NULL;
2060 bool evt_num_known = false;
2061
2062restart:
2063 if (evt_num_known) {
2064 evt_list = zalloc(sizeof(char *) * evt_num);
2065 if (!evt_list)
2066 goto out_enomem;
2067 syms -= max;
2068 }
2069
2070 for (i = 0; i < max; i++, syms++) {
2071
2072 if (event_glob != NULL && syms->symbol != NULL &&
2073 !(strglobmatch(syms->symbol, event_glob) ||
2074 (syms->alias && strglobmatch(syms->alias, event_glob))))
2075 continue;
2076
2077 if (!is_event_supported(type, i))
2078 continue;
2079
2080 if (!evt_num_known) {
2081 evt_num++;
2082 continue;
2083 }
2084
2085 if (!name_only && strlen(syms->alias))
2086 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
2087 else
2088 strncpy(name, syms->symbol, MAX_NAME_LEN);
2089
2090 evt_list[evt_i] = strdup(name);
2091 if (evt_list[evt_i] == NULL)
2092 goto out_enomem;
2093 evt_i++;
2094 }
2095
2096 if (!evt_num_known) {
2097 evt_num_known = true;
2098 goto restart;
2099 }
2100 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2101 evt_i = 0;
2102 while (evt_i < evt_num) {
2103 if (name_only) {
2104 printf("%s ", evt_list[evt_i++]);
2105 continue;
2106 }
2107 printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);
2108 }
2109 if (evt_num && pager_in_use())
2110 printf("\n");
2111
2112out_free:
2113 evt_num = evt_i;
2114 for (evt_i = 0; evt_i < evt_num; evt_i++)
2115 zfree(&evt_list[evt_i]);
2116 zfree(&evt_list);
2117 return;
2118
2119out_enomem:
2120 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]);
2121 if (evt_list)
2122 goto out_free;
2123}
2124
2125
2126
2127
2128void print_events(const char *event_glob, bool name_only)
2129{
2130 print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
2131 event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
2132
2133 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
2134 event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
2135
2136 print_hwcache_events(event_glob, name_only);
2137
2138 print_pmu_events(event_glob, name_only);
2139
2140 if (event_glob != NULL)
2141 return;
2142
2143 if (!name_only) {
2144 printf(" %-50s [%s]\n",
2145 "rNNN",
2146 event_type_descriptors[PERF_TYPE_RAW]);
2147 printf(" %-50s [%s]\n",
2148 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
2149 event_type_descriptors[PERF_TYPE_RAW]);
2150 if (pager_in_use())
2151 printf(" (see 'man perf-list' on how to encode it)\n\n");
2152
2153 printf(" %-50s [%s]\n",
2154 "mem:<addr>[/len][:access]",
2155 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
2156 if (pager_in_use())
2157 printf("\n");
2158 }
2159
2160 print_tracepoint_events(NULL, NULL, name_only);
2161}
2162
2163int parse_events__is_hardcoded_term(struct parse_events_term *term)
2164{
2165 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2166}
2167
2168static int new_term(struct parse_events_term **_term, int type_val,
2169 int type_term, char *config,
2170 char *str, u64 num, int err_term, int err_val)
2171{
2172 struct parse_events_term *term;
2173
2174 term = zalloc(sizeof(*term));
2175 if (!term)
2176 return -ENOMEM;
2177
2178 INIT_LIST_HEAD(&term->list);
2179 term->type_val = type_val;
2180 term->type_term = type_term;
2181 term->config = config;
2182 term->err_term = err_term;
2183 term->err_val = err_val;
2184
2185 switch (type_val) {
2186 case PARSE_EVENTS__TERM_TYPE_NUM:
2187 term->val.num = num;
2188 break;
2189 case PARSE_EVENTS__TERM_TYPE_STR:
2190 term->val.str = str;
2191 break;
2192 default:
2193 free(term);
2194 return -EINVAL;
2195 }
2196
2197 *_term = term;
2198 return 0;
2199}
2200
2201int parse_events_term__num(struct parse_events_term **term,
2202 int type_term, char *config, u64 num,
2203 void *loc_term_, void *loc_val_)
2204{
2205 YYLTYPE *loc_term = loc_term_;
2206 YYLTYPE *loc_val = loc_val_;
2207
2208 return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
2209 config, NULL, num,
2210 loc_term ? loc_term->first_column : 0,
2211 loc_val ? loc_val->first_column : 0);
2212}
2213
2214int parse_events_term__str(struct parse_events_term **term,
2215 int type_term, char *config, char *str,
2216 void *loc_term_, void *loc_val_)
2217{
2218 YYLTYPE *loc_term = loc_term_;
2219 YYLTYPE *loc_val = loc_val_;
2220
2221 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR, type_term,
2222 config, str, 0,
2223 loc_term ? loc_term->first_column : 0,
2224 loc_val ? loc_val->first_column : 0);
2225}
2226
2227int parse_events_term__sym_hw(struct parse_events_term **term,
2228 char *config, unsigned idx)
2229{
2230 struct event_symbol *sym;
2231
2232 BUG_ON(idx >= PERF_COUNT_HW_MAX);
2233 sym = &event_symbols_hw[idx];
2234
2235 if (config)
2236 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
2237 PARSE_EVENTS__TERM_TYPE_USER, config,
2238 (char *) sym->symbol, 0, 0, 0);
2239 else
2240 return new_term(term, PARSE_EVENTS__TERM_TYPE_STR,
2241 PARSE_EVENTS__TERM_TYPE_USER,
2242 (char *) "event", (char *) sym->symbol,
2243 0, 0, 0);
2244}
2245
2246int parse_events_term__clone(struct parse_events_term **new,
2247 struct parse_events_term *term)
2248{
2249 return new_term(new, term->type_val, term->type_term, term->config,
2250 term->val.str, term->val.num,
2251 term->err_term, term->err_val);
2252}
2253
2254void parse_events_terms__purge(struct list_head *terms)
2255{
2256 struct parse_events_term *term, *h;
2257
2258 list_for_each_entry_safe(term, h, terms, list) {
2259 if (term->array.nr_ranges)
2260 free(term->array.ranges);
2261 list_del_init(&term->list);
2262 free(term);
2263 }
2264}
2265
2266void parse_events_terms__delete(struct list_head *terms)
2267{
2268 if (!terms)
2269 return;
2270 parse_events_terms__purge(terms);
2271 free(terms);
2272}
2273
2274void parse_events__clear_array(struct parse_events_array *a)
2275{
2276 free(a->ranges);
2277}
2278
2279void parse_events_evlist_error(struct parse_events_evlist *data,
2280 int idx, const char *str)
2281{
2282 struct parse_events_error *err = data->error;
2283
2284 if (!err)
2285 return;
2286 err->idx = idx;
2287 err->str = strdup(str);
2288 WARN_ONCE(!err->str, "WARNING: failed to allocate error string");
2289}
2290
2291static void config_terms_list(char *buf, size_t buf_sz)
2292{
2293 int i;
2294 bool first = true;
2295
2296 buf[0] = '\0';
2297 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2298 const char *name = config_term_names[i];
2299
2300 if (!config_term_avail(i, NULL))
2301 continue;
2302 if (!name)
2303 continue;
2304 if (name[0] == '<')
2305 continue;
2306
2307 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2308 return;
2309
2310 if (!first)
2311 strcat(buf, ",");
2312 else
2313 first = false;
2314 strcat(buf, name);
2315 }
2316}
2317
2318
2319
2320
2321
2322char *parse_events_formats_error_string(char *additional_terms)
2323{
2324 char *str;
2325
2326 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2327 (sizeof("branch_type") - 1)];
2328
2329 config_terms_list(static_terms, sizeof(static_terms));
2330
2331 if (additional_terms) {
2332 if (asprintf(&str, "valid terms: %s,%s",
2333 additional_terms, static_terms) < 0)
2334 goto fail;
2335 } else {
2336 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
2337 goto fail;
2338 }
2339 return str;
2340
2341fail:
2342 return NULL;
2343}
2344
