1
2#include <linux/hw_breakpoint.h>
3#include <linux/err.h>
4#include <dirent.h>
5#include <errno.h>
6#include <sys/ioctl.h>
7#include <sys/types.h>
8#include <sys/stat.h>
9#include <fcntl.h>
10#include <sys/param.h>
11#include "term.h"
12#include "../perf.h"
13#include "evlist.h"
14#include "evsel.h"
15#include <subcmd/parse-options.h>
16#include "parse-events.h"
17#include <subcmd/exec-cmd.h>
18#include "string2.h"
19#include "strlist.h"
20#include "symbol.h"
21#include "cache.h"
22#include "header.h"
23#include "bpf-loader.h"
24#include "debug.h"
25#include <api/fs/tracing_path.h>
26#include "parse-events-bison.h"
27#define YY_EXTRA_TYPE int
28#include "parse-events-flex.h"
29#include "pmu.h"
30#include "thread_map.h"
31#include "cpumap.h"
32#include "probe-file.h"
33#include "asm/bug.h"
34#include "util/parse-branch-options.h"
35#include "metricgroup.h"
36
37#define MAX_NAME_LEN 100
38
39#ifdef PARSER_DEBUG
40extern int parse_events_debug;
41#endif
42int parse_events_parse(void *parse_state, void *scanner);
43static int get_config_terms(struct list_head *head_config,
44 struct list_head *head_terms __maybe_unused);
45
46static struct perf_pmu_event_symbol *perf_pmu_events_list;
47
48
49
50
51
52
53static int perf_pmu_events_list_num;
54
55struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
56 [PERF_COUNT_HW_CPU_CYCLES] = {
57 .symbol = "cpu-cycles",
58 .alias = "cycles",
59 },
60 [PERF_COUNT_HW_INSTRUCTIONS] = {
61 .symbol = "instructions",
62 .alias = "",
63 },
64 [PERF_COUNT_HW_CACHE_REFERENCES] = {
65 .symbol = "cache-references",
66 .alias = "",
67 },
68 [PERF_COUNT_HW_CACHE_MISSES] = {
69 .symbol = "cache-misses",
70 .alias = "",
71 },
72 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
73 .symbol = "branch-instructions",
74 .alias = "branches",
75 },
76 [PERF_COUNT_HW_BRANCH_MISSES] = {
77 .symbol = "branch-misses",
78 .alias = "",
79 },
80 [PERF_COUNT_HW_BUS_CYCLES] = {
81 .symbol = "bus-cycles",
82 .alias = "",
83 },
84 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
85 .symbol = "stalled-cycles-frontend",
86 .alias = "idle-cycles-frontend",
87 },
88 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
89 .symbol = "stalled-cycles-backend",
90 .alias = "idle-cycles-backend",
91 },
92 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
93 .symbol = "ref-cycles",
94 .alias = "",
95 },
96};
97
98struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
99 [PERF_COUNT_SW_CPU_CLOCK] = {
100 .symbol = "cpu-clock",
101 .alias = "",
102 },
103 [PERF_COUNT_SW_TASK_CLOCK] = {
104 .symbol = "task-clock",
105 .alias = "",
106 },
107 [PERF_COUNT_SW_PAGE_FAULTS] = {
108 .symbol = "page-faults",
109 .alias = "faults",
110 },
111 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
112 .symbol = "context-switches",
113 .alias = "cs",
114 },
115 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
116 .symbol = "cpu-migrations",
117 .alias = "migrations",
118 },
119 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
120 .symbol = "minor-faults",
121 .alias = "",
122 },
123 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
124 .symbol = "major-faults",
125 .alias = "",
126 },
127 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
128 .symbol = "alignment-faults",
129 .alias = "",
130 },
131 [PERF_COUNT_SW_EMULATION_FAULTS] = {
132 .symbol = "emulation-faults",
133 .alias = "",
134 },
135 [PERF_COUNT_SW_DUMMY] = {
136 .symbol = "dummy",
137 .alias = "",
138 },
139 [PERF_COUNT_SW_BPF_OUTPUT] = {
140 .symbol = "bpf-output",
141 .alias = "",
142 },
143};
144
145#define __PERF_EVENT_FIELD(config, name) \
146 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
147
148#define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
149#define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
150#define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
151#define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
152
153#define for_each_subsystem(sys_dir, sys_dirent) \
154 while ((sys_dirent = readdir(sys_dir)) != NULL) \
155 if (sys_dirent->d_type == DT_DIR && \
156 (strcmp(sys_dirent->d_name, ".")) && \
157 (strcmp(sys_dirent->d_name, "..")))
158
159static int tp_event_has_id(const char *dir_path, struct dirent *evt_dir)
160{
161 char evt_path[MAXPATHLEN];
162 int fd;
163
164 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, evt_dir->d_name);
165 fd = open(evt_path, O_RDONLY);
166 if (fd < 0)
167 return -EINVAL;
168 close(fd);
169
170 return 0;
171}
172
173#define for_each_event(dir_path, evt_dir, evt_dirent) \
174 while ((evt_dirent = readdir(evt_dir)) != NULL) \
175 if (evt_dirent->d_type == DT_DIR && \
176 (strcmp(evt_dirent->d_name, ".")) && \
177 (strcmp(evt_dirent->d_name, "..")) && \
178 (!tp_event_has_id(dir_path, evt_dirent)))
179
180#define MAX_EVENT_LENGTH 512
181
182
183struct tracepoint_path *tracepoint_id_to_path(u64 config)
184{
185 struct tracepoint_path *path = NULL;
186 DIR *sys_dir, *evt_dir;
187 struct dirent *sys_dirent, *evt_dirent;
188 char id_buf[24];
189 int fd;
190 u64 id;
191 char evt_path[MAXPATHLEN];
192 char *dir_path;
193
194 sys_dir = tracing_events__opendir();
195 if (!sys_dir)
196 return NULL;
197
198 for_each_subsystem(sys_dir, sys_dirent) {
199 dir_path = get_events_file(sys_dirent->d_name);
200 if (!dir_path)
201 continue;
202 evt_dir = opendir(dir_path);
203 if (!evt_dir)
204 goto next;
205
206 for_each_event(dir_path, evt_dir, evt_dirent) {
207
208 scnprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
209 evt_dirent->d_name);
210 fd = open(evt_path, O_RDONLY);
211 if (fd < 0)
212 continue;
213 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
214 close(fd);
215 continue;
216 }
217 close(fd);
218 id = atoll(id_buf);
219 if (id == config) {
220 put_events_file(dir_path);
221 closedir(evt_dir);
222 closedir(sys_dir);
223 path = zalloc(sizeof(*path));
224 if (!path)
225 return NULL;
226 path->system = malloc(MAX_EVENT_LENGTH);
227 if (!path->system) {
228 free(path);
229 return NULL;
230 }
231 path->name = malloc(MAX_EVENT_LENGTH);
232 if (!path->name) {
233 zfree(&path->system);
234 free(path);
235 return NULL;
236 }
237 strncpy(path->system, sys_dirent->d_name,
238 MAX_EVENT_LENGTH);
239 strncpy(path->name, evt_dirent->d_name,
240 MAX_EVENT_LENGTH);
241 return path;
242 }
243 }
244 closedir(evt_dir);
245next:
246 put_events_file(dir_path);
247 }
248
249 closedir(sys_dir);
250 return NULL;
251}
252
253struct tracepoint_path *tracepoint_name_to_path(const char *name)
254{
255 struct tracepoint_path *path = zalloc(sizeof(*path));
256 char *str = strchr(name, ':');
257
258 if (path == NULL || str == NULL) {
259 free(path);
260 return NULL;
261 }
262
263 path->system = strndup(name, str - name);
264 path->name = strdup(str+1);
265
266 if (path->system == NULL || path->name == NULL) {
267 zfree(&path->system);
268 zfree(&path->name);
269 zfree(&path);
270 }
271
272 return path;
273}
274
275const char *event_type(int type)
276{
277 switch (type) {
278 case PERF_TYPE_HARDWARE:
279 return "hardware";
280
281 case PERF_TYPE_SOFTWARE:
282 return "software";
283
284 case PERF_TYPE_TRACEPOINT:
285 return "tracepoint";
286
287 case PERF_TYPE_HW_CACHE:
288 return "hardware-cache";
289
290 default:
291 break;
292 }
293
294 return "unknown";
295}
296
297static int parse_events__is_name_term(struct parse_events_term *term)
298{
299 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
300}
301
302static char *get_config_name(struct list_head *head_terms)
303{
304 struct parse_events_term *term;
305
306 if (!head_terms)
307 return NULL;
308
309 list_for_each_entry(term, head_terms, list)
310 if (parse_events__is_name_term(term))
311 return term->val.str;
312
313 return NULL;
314}
315
316static struct perf_evsel *
317__add_event(struct list_head *list, int *idx,
318 struct perf_event_attr *attr,
319 char *name, struct perf_pmu *pmu,
320 struct list_head *config_terms, bool auto_merge_stats)
321{
322 struct perf_evsel *evsel;
323 struct cpu_map *cpus = pmu ? pmu->cpus : NULL;
324
325 event_attr_init(attr);
326
327 evsel = perf_evsel__new_idx(attr, *idx);
328 if (!evsel)
329 return NULL;
330
331 (*idx)++;
332 evsel->cpus = cpu_map__get(cpus);
333 evsel->own_cpus = cpu_map__get(cpus);
334 evsel->system_wide = pmu ? pmu->is_uncore : false;
335 evsel->auto_merge_stats = auto_merge_stats;
336
337 if (name)
338 evsel->name = strdup(name);
339
340 if (config_terms)
341 list_splice(config_terms, &evsel->config_terms);
342
343 list_add_tail(&evsel->node, list);
344 return evsel;
345}
346
347static int add_event(struct list_head *list, int *idx,
348 struct perf_event_attr *attr, char *name,
349 struct list_head *config_terms)
350{
351 return __add_event(list, idx, attr, name, NULL, config_terms, false) ? 0 : -ENOMEM;
352}
353
354static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
355{
356 int i, j;
357 int n, longest = -1;
358
359 for (i = 0; i < size; i++) {
360 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
361 n = strlen(names[i][j]);
362 if (n > longest && !strncasecmp(str, names[i][j], n))
363 longest = n;
364 }
365 if (longest > 0)
366 return i;
367 }
368
369 return -1;
370}
371
372typedef int config_term_func_t(struct perf_event_attr *attr,
373 struct parse_events_term *term,
374 struct parse_events_error *err);
375static int config_term_common(struct perf_event_attr *attr,
376 struct parse_events_term *term,
377 struct parse_events_error *err);
378static int config_attr(struct perf_event_attr *attr,
379 struct list_head *head,
380 struct parse_events_error *err,
381 config_term_func_t config_term);
382
383int parse_events_add_cache(struct list_head *list, int *idx,
384 char *type, char *op_result1, char *op_result2,
385 struct parse_events_error *err,
386 struct list_head *head_config)
387{
388 struct perf_event_attr attr;
389 LIST_HEAD(config_terms);
390 char name[MAX_NAME_LEN], *config_name;
391 int cache_type = -1, cache_op = -1, cache_result = -1;
392 char *op_result[2] = { op_result1, op_result2 };
393 int i, n;
394
395
396
397
398
399 cache_type = parse_aliases(type, perf_evsel__hw_cache,
400 PERF_COUNT_HW_CACHE_MAX);
401 if (cache_type == -1)
402 return -EINVAL;
403
404 config_name = get_config_name(head_config);
405 n = snprintf(name, MAX_NAME_LEN, "%s", type);
406
407 for (i = 0; (i < 2) && (op_result[i]); i++) {
408 char *str = op_result[i];
409
410 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
411
412 if (cache_op == -1) {
413 cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
414 PERF_COUNT_HW_CACHE_OP_MAX);
415 if (cache_op >= 0) {
416 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
417 return -EINVAL;
418 continue;
419 }
420 }
421
422 if (cache_result == -1) {
423 cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
424 PERF_COUNT_HW_CACHE_RESULT_MAX);
425 if (cache_result >= 0)
426 continue;
427 }
428 }
429
430
431
432
433 if (cache_op == -1)
434 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
435
436
437
438
439 if (cache_result == -1)
440 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
441
442 memset(&attr, 0, sizeof(attr));
443 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
444 attr.type = PERF_TYPE_HW_CACHE;
445
446 if (head_config) {
447 if (config_attr(&attr, head_config, err,
448 config_term_common))
449 return -EINVAL;
450
451 if (get_config_terms(head_config, &config_terms))
452 return -ENOMEM;
453 }
454 return add_event(list, idx, &attr, config_name ? : name, &config_terms);
455}
456
457static void tracepoint_error(struct parse_events_error *e, int err,
458 const char *sys, const char *name)
459{
460 char help[BUFSIZ];
461
462 if (!e)
463 return;
464
465
466
467
468
469 err = abs(err);
470
471 switch (err) {
472 case EACCES:
473 e->str = strdup("can't access trace events");
474 break;
475 case ENOENT:
476 e->str = strdup("unknown tracepoint");
477 break;
478 default:
479 e->str = strdup("failed to add tracepoint");
480 break;
481 }
482
483 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
484 e->help = strdup(help);
485}
486
487static int add_tracepoint(struct list_head *list, int *idx,
488 const char *sys_name, const char *evt_name,
489 struct parse_events_error *err,
490 struct list_head *head_config)
491{
492 struct perf_evsel *evsel;
493
494 evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
495 if (IS_ERR(evsel)) {
496 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name);
497 return PTR_ERR(evsel);
498 }
499
500 if (head_config) {
501 LIST_HEAD(config_terms);
502
503 if (get_config_terms(head_config, &config_terms))
504 return -ENOMEM;
505 list_splice(&config_terms, &evsel->config_terms);
506 }
507
508 list_add_tail(&evsel->node, list);
509 return 0;
510}
511
512static int add_tracepoint_multi_event(struct list_head *list, int *idx,
513 const char *sys_name, const char *evt_name,
514 struct parse_events_error *err,
515 struct list_head *head_config)
516{
517 char *evt_path;
518 struct dirent *evt_ent;
519 DIR *evt_dir;
520 int ret = 0, found = 0;
521
522 evt_path = get_events_file(sys_name);
523 if (!evt_path) {
524 tracepoint_error(err, errno, sys_name, evt_name);
525 return -1;
526 }
527 evt_dir = opendir(evt_path);
528 if (!evt_dir) {
529 put_events_file(evt_path);
530 tracepoint_error(err, errno, sys_name, evt_name);
531 return -1;
532 }
533
534 while (!ret && (evt_ent = readdir(evt_dir))) {
535 if (!strcmp(evt_ent->d_name, ".")
536 || !strcmp(evt_ent->d_name, "..")
537 || !strcmp(evt_ent->d_name, "enable")
538 || !strcmp(evt_ent->d_name, "filter"))
539 continue;
540
541 if (!strglobmatch(evt_ent->d_name, evt_name))
542 continue;
543
544 found++;
545
546 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name,
547 err, head_config);
548 }
549
550 if (!found) {
551 tracepoint_error(err, ENOENT, sys_name, evt_name);
552 ret = -1;
553 }
554
555 put_events_file(evt_path);
556 closedir(evt_dir);
557 return ret;
558}
559
560static int add_tracepoint_event(struct list_head *list, int *idx,
561 const char *sys_name, const char *evt_name,
562 struct parse_events_error *err,
563 struct list_head *head_config)
564{
565 return strpbrk(evt_name, "*?") ?
566 add_tracepoint_multi_event(list, idx, sys_name, evt_name,
567 err, head_config) :
568 add_tracepoint(list, idx, sys_name, evt_name,
569 err, head_config);
570}
571
572static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
573 const char *sys_name, const char *evt_name,
574 struct parse_events_error *err,
575 struct list_head *head_config)
576{
577 struct dirent *events_ent;
578 DIR *events_dir;
579 int ret = 0;
580
581 events_dir = tracing_events__opendir();
582 if (!events_dir) {
583 tracepoint_error(err, errno, sys_name, evt_name);
584 return -1;
585 }
586
587 while (!ret && (events_ent = readdir(events_dir))) {
588 if (!strcmp(events_ent->d_name, ".")
589 || !strcmp(events_ent->d_name, "..")
590 || !strcmp(events_ent->d_name, "enable")
591 || !strcmp(events_ent->d_name, "header_event")
592 || !strcmp(events_ent->d_name, "header_page"))
593 continue;
594
595 if (!strglobmatch(events_ent->d_name, sys_name))
596 continue;
597
598 ret = add_tracepoint_event(list, idx, events_ent->d_name,
599 evt_name, err, head_config);
600 }
601
602 closedir(events_dir);
603 return ret;
604}
605
606struct __add_bpf_event_param {
607 struct parse_events_state *parse_state;
608 struct list_head *list;
609 struct list_head *head_config;
610};
611
612static int add_bpf_event(const char *group, const char *event, int fd,
613 void *_param)
614{
615 LIST_HEAD(new_evsels);
616 struct __add_bpf_event_param *param = _param;
617 struct parse_events_state *parse_state = param->parse_state;
618 struct list_head *list = param->list;
619 struct perf_evsel *pos;
620 int err;
621
622 pr_debug("add bpf event %s:%s and attach bpf program %d\n",
623 group, event, fd);
624
625 err = parse_events_add_tracepoint(&new_evsels, &parse_state->idx, group,
626 event, parse_state->error,
627 param->head_config);
628 if (err) {
629 struct perf_evsel *evsel, *tmp;
630
631 pr_debug("Failed to add BPF event %s:%s\n",
632 group, event);
633 list_for_each_entry_safe(evsel, tmp, &new_evsels, node) {
634 list_del(&evsel->node);
635 perf_evsel__delete(evsel);
636 }
637 return err;
638 }
639 pr_debug("adding %s:%s\n", group, event);
640
641 list_for_each_entry(pos, &new_evsels, node) {
642 pr_debug("adding %s:%s to %p\n",
643 group, event, pos);
644 pos->bpf_fd = fd;
645 }
646 list_splice(&new_evsels, list);
647 return 0;
648}
649
650int parse_events_load_bpf_obj(struct parse_events_state *parse_state,
651 struct list_head *list,
652 struct bpf_object *obj,
653 struct list_head *head_config)
654{
655 int err;
656 char errbuf[BUFSIZ];
657 struct __add_bpf_event_param param = {parse_state, list, head_config};
658 static bool registered_unprobe_atexit = false;
659
660 if (IS_ERR(obj) || !obj) {
661 snprintf(errbuf, sizeof(errbuf),
662 "Internal error: load bpf obj with NULL");
663 err = -EINVAL;
664 goto errout;
665 }
666
667
668
669
670
671
672 if (!registered_unprobe_atexit) {
673 atexit(bpf__clear);
674 registered_unprobe_atexit = true;
675 }
676
677 err = bpf__probe(obj);
678 if (err) {
679 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf));
680 goto errout;
681 }
682
683 err = bpf__load(obj);
684 if (err) {
685 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf));
686 goto errout;
687 }
688
689 err = bpf__foreach_event(obj, add_bpf_event, ¶m);
690 if (err) {
691 snprintf(errbuf, sizeof(errbuf),
692 "Attach events in BPF object failed");
693 goto errout;
694 }
695
696 return 0;
697errout:
698 parse_state->error->help = strdup("(add -v to see detail)");
699 parse_state->error->str = strdup(errbuf);
700 return err;
701}
702
703static int
704parse_events_config_bpf(struct parse_events_state *parse_state,
705 struct bpf_object *obj,
706 struct list_head *head_config)
707{
708 struct parse_events_term *term;
709 int error_pos;
710
711 if (!head_config || list_empty(head_config))
712 return 0;
713
714 list_for_each_entry(term, head_config, list) {
715 char errbuf[BUFSIZ];
716 int err;
717
718 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) {
719 snprintf(errbuf, sizeof(errbuf),
720 "Invalid config term for BPF object");
721 errbuf[BUFSIZ - 1] = '\0';
722
723 parse_state->error->idx = term->err_term;
724 parse_state->error->str = strdup(errbuf);
725 return -EINVAL;
726 }
727
728 err = bpf__config_obj(obj, term, parse_state->evlist, &error_pos);
729 if (err) {
730 bpf__strerror_config_obj(obj, term, parse_state->evlist,
731 &error_pos, err, errbuf,
732 sizeof(errbuf));
733 parse_state->error->help = strdup(
734"Hint:\tValid config terms:\n"
735" \tmap:[<arraymap>].value<indices>=[value]\n"
736" \tmap:[<eventmap>].event<indices>=[event]\n"
737"\n"
738" \twhere <indices> is something like [0,3...5] or [all]\n"
739" \t(add -v to see detail)");
740 parse_state->error->str = strdup(errbuf);
741 if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
742 parse_state->error->idx = term->err_val;
743 else
744 parse_state->error->idx = term->err_term + error_pos;
745 return err;
746 }
747 }
748 return 0;
749}
750
751
752
753
754
755
756
757
758
759
760
761static void
762split_bpf_config_terms(struct list_head *evt_head_config,
763 struct list_head *obj_head_config)
764{
765 struct parse_events_term *term, *temp;
766
767
768
769
770
771
772
773
774
775 list_for_each_entry_safe(term, temp, evt_head_config, list)
776 if (!parse_events__is_hardcoded_term(term))
777 list_move_tail(&term->list, obj_head_config);
778}
779
780int parse_events_load_bpf(struct parse_events_state *parse_state,
781 struct list_head *list,
782 char *bpf_file_name,
783 bool source,
784 struct list_head *head_config)
785{
786 int err;
787 struct bpf_object *obj;
788 LIST_HEAD(obj_head_config);
789
790 if (head_config)
791 split_bpf_config_terms(head_config, &obj_head_config);
792
793 obj = bpf__prepare_load(bpf_file_name, source);
794 if (IS_ERR(obj)) {
795 char errbuf[BUFSIZ];
796
797 err = PTR_ERR(obj);
798
799 if (err == -ENOTSUP)
800 snprintf(errbuf, sizeof(errbuf),
801 "BPF support is not compiled");
802 else
803 bpf__strerror_prepare_load(bpf_file_name,
804 source,
805 -err, errbuf,
806 sizeof(errbuf));
807
808 parse_state->error->help = strdup("(add -v to see detail)");
809 parse_state->error->str = strdup(errbuf);
810 return err;
811 }
812
813 err = parse_events_load_bpf_obj(parse_state, list, obj, head_config);
814 if (err)
815 return err;
816 err = parse_events_config_bpf(parse_state, obj, &obj_head_config);
817
818
819
820
821
822 if (head_config)
823 list_splice_tail(&obj_head_config, head_config);
824 return err;
825}
826
827static int
828parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
829{
830 int i;
831
832 for (i = 0; i < 3; i++) {
833 if (!type || !type[i])
834 break;
835
836#define CHECK_SET_TYPE(bit) \
837do { \
838 if (attr->bp_type & bit) \
839 return -EINVAL; \
840 else \
841 attr->bp_type |= bit; \
842} while (0)
843
844 switch (type[i]) {
845 case 'r':
846 CHECK_SET_TYPE(HW_BREAKPOINT_R);
847 break;
848 case 'w':
849 CHECK_SET_TYPE(HW_BREAKPOINT_W);
850 break;
851 case 'x':
852 CHECK_SET_TYPE(HW_BREAKPOINT_X);
853 break;
854 default:
855 return -EINVAL;
856 }
857 }
858
859#undef CHECK_SET_TYPE
860
861 if (!attr->bp_type)
862 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
863
864 return 0;
865}
866
867int parse_events_add_breakpoint(struct list_head *list, int *idx,
868 void *ptr, char *type, u64 len)
869{
870 struct perf_event_attr attr;
871
872 memset(&attr, 0, sizeof(attr));
873 attr.bp_addr = (unsigned long) ptr;
874
875 if (parse_breakpoint_type(type, &attr))
876 return -EINVAL;
877
878
879 if (!len) {
880 if (attr.bp_type == HW_BREAKPOINT_X)
881 len = sizeof(long);
882 else
883 len = HW_BREAKPOINT_LEN_4;
884 }
885
886 attr.bp_len = len;
887
888 attr.type = PERF_TYPE_BREAKPOINT;
889 attr.sample_period = 1;
890
891 return add_event(list, idx, &attr, NULL, NULL);
892}
893
894static int check_type_val(struct parse_events_term *term,
895 struct parse_events_error *err,
896 int type)
897{
898 if (type == term->type_val)
899 return 0;
900
901 if (err) {
902 err->idx = term->err_val;
903 if (type == PARSE_EVENTS__TERM_TYPE_NUM)
904 err->str = strdup("expected numeric value");
905 else
906 err->str = strdup("expected string value");
907 }
908 return -EINVAL;
909}
910
911
912
913
914static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
915 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>",
916 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config",
917 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1",
918 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2",
919 [PARSE_EVENTS__TERM_TYPE_NAME] = "name",
920 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period",
921 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq",
922 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type",
923 [PARSE_EVENTS__TERM_TYPE_TIME] = "time",
924 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph",
925 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size",
926 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit",
927 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit",
928 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack",
929 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite",
930 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",
931 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config",
932};
933
934static bool config_term_shrinked;
935
936static bool
937config_term_avail(int term_type, struct parse_events_error *err)
938{
939 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
940 err->str = strdup("Invalid term_type");
941 return false;
942 }
943 if (!config_term_shrinked)
944 return true;
945
946 switch (term_type) {
947 case PARSE_EVENTS__TERM_TYPE_CONFIG:
948 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
949 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
950 case PARSE_EVENTS__TERM_TYPE_NAME:
951 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
952 return true;
953 default:
954 if (!err)
955 return false;
956
957
958 if (asprintf(&err->str, "'%s' is not usable in 'perf stat'",
959 config_term_names[term_type]) < 0)
960 err->str = NULL;
961 return false;
962 }
963}
964
965void parse_events__shrink_config_terms(void)
966{
967 config_term_shrinked = true;
968}
969
970static int config_term_common(struct perf_event_attr *attr,
971 struct parse_events_term *term,
972 struct parse_events_error *err)
973{
974#define CHECK_TYPE_VAL(type) \
975do { \
976 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
977 return -EINVAL; \
978} while (0)
979
980 switch (term->type_term) {
981 case PARSE_EVENTS__TERM_TYPE_CONFIG:
982 CHECK_TYPE_VAL(NUM);
983 attr->config = term->val.num;
984 break;
985 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
986 CHECK_TYPE_VAL(NUM);
987 attr->config1 = term->val.num;
988 break;
989 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
990 CHECK_TYPE_VAL(NUM);
991 attr->config2 = term->val.num;
992 break;
993 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
994 CHECK_TYPE_VAL(NUM);
995 break;
996 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
997 CHECK_TYPE_VAL(NUM);
998 break;
999 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1000 CHECK_TYPE_VAL(STR);
1001 if (strcmp(term->val.str, "no") &&
1002 parse_branch_str(term->val.str, &attr->branch_sample_type)) {
1003 err->str = strdup("invalid branch sample type");
1004 err->idx = term->err_val;
1005 return -EINVAL;
1006 }
1007 break;
1008 case PARSE_EVENTS__TERM_TYPE_TIME:
1009 CHECK_TYPE_VAL(NUM);
1010 if (term->val.num > 1) {
1011 err->str = strdup("expected 0 or 1");
1012 err->idx = term->err_val;
1013 return -EINVAL;
1014 }
1015 break;
1016 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1017 CHECK_TYPE_VAL(STR);
1018 break;
1019 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1020 CHECK_TYPE_VAL(NUM);
1021 break;
1022 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1023 CHECK_TYPE_VAL(NUM);
1024 break;
1025 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1026 CHECK_TYPE_VAL(NUM);
1027 break;
1028 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1029 CHECK_TYPE_VAL(NUM);
1030 break;
1031 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1032 CHECK_TYPE_VAL(NUM);
1033 break;
1034 case PARSE_EVENTS__TERM_TYPE_NAME:
1035 CHECK_TYPE_VAL(STR);
1036 break;
1037 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1038 CHECK_TYPE_VAL(NUM);
1039 break;
1040 default:
1041 err->str = strdup("unknown term");
1042 err->idx = term->err_term;
1043 err->help = parse_events_formats_error_string(NULL);
1044 return -EINVAL;
1045 }
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056 if (!config_term_avail(term->type_term, err))
1057 return -EINVAL;
1058 return 0;
1059#undef CHECK_TYPE_VAL
1060}
1061
1062static int config_term_pmu(struct perf_event_attr *attr,
1063 struct parse_events_term *term,
1064 struct parse_events_error *err)
1065{
1066 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1067 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG)
1068
1069
1070
1071
1072 return 0;
1073 else
1074 return config_term_common(attr, term, err);
1075}
1076
1077static int config_term_tracepoint(struct perf_event_attr *attr,
1078 struct parse_events_term *term,
1079 struct parse_events_error *err)
1080{
1081 switch (term->type_term) {
1082 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1083 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1084 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1085 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1086 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1087 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1088 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1089 return config_term_common(attr, term, err);
1090 default:
1091 if (err) {
1092 err->idx = term->err_term;
1093 err->str = strdup("unknown term");
1094 err->help = strdup("valid terms: call-graph,stack-size\n");
1095 }
1096 return -EINVAL;
1097 }
1098
1099 return 0;
1100}
1101
1102static int config_attr(struct perf_event_attr *attr,
1103 struct list_head *head,
1104 struct parse_events_error *err,
1105 config_term_func_t config_term)
1106{
1107 struct parse_events_term *term;
1108
1109 list_for_each_entry(term, head, list)
1110 if (config_term(attr, term, err))
1111 return -EINVAL;
1112
1113 return 0;
1114}
1115
1116static int get_config_terms(struct list_head *head_config,
1117 struct list_head *head_terms __maybe_unused)
1118{
1119#define ADD_CONFIG_TERM(__type, __name, __val) \
1120do { \
1121 struct perf_evsel_config_term *__t; \
1122 \
1123 __t = zalloc(sizeof(*__t)); \
1124 if (!__t) \
1125 return -ENOMEM; \
1126 \
1127 INIT_LIST_HEAD(&__t->list); \
1128 __t->type = PERF_EVSEL__CONFIG_TERM_ ## __type; \
1129 __t->val.__name = __val; \
1130 __t->weak = term->weak; \
1131 list_add_tail(&__t->list, head_terms); \
1132} while (0)
1133
1134 struct parse_events_term *term;
1135
1136 list_for_each_entry(term, head_config, list) {
1137 switch (term->type_term) {
1138 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1139 ADD_CONFIG_TERM(PERIOD, period, term->val.num);
1140 break;
1141 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1142 ADD_CONFIG_TERM(FREQ, freq, term->val.num);
1143 break;
1144 case PARSE_EVENTS__TERM_TYPE_TIME:
1145 ADD_CONFIG_TERM(TIME, time, term->val.num);
1146 break;
1147 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1148 ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str);
1149 break;
1150 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1151 ADD_CONFIG_TERM(BRANCH, branch, term->val.str);
1152 break;
1153 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1154 ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num);
1155 break;
1156 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1157 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 1 : 0);
1158 break;
1159 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1160 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
1161 break;
1162 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1163 ADD_CONFIG_TERM(MAX_STACK, max_stack, term->val.num);
1164 break;
1165 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1166 ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 1 : 0);
1167 break;
1168 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1169 ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 0 : 1);
1170 break;
1171 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1172 ADD_CONFIG_TERM(DRV_CFG, drv_cfg, term->val.str);
1173 break;
1174 default:
1175 break;
1176 }
1177 }
1178#undef ADD_EVSEL_CONFIG
1179 return 0;
1180}
1181
1182int parse_events_add_tracepoint(struct list_head *list, int *idx,
1183 const char *sys, const char *event,
1184 struct parse_events_error *err,
1185 struct list_head *head_config)
1186{
1187 if (head_config) {
1188 struct perf_event_attr attr;
1189
1190 if (config_attr(&attr, head_config, err,
1191 config_term_tracepoint))
1192 return -EINVAL;
1193 }
1194
1195 if (strpbrk(sys, "*?"))
1196 return add_tracepoint_multi_sys(list, idx, sys, event,
1197 err, head_config);
1198 else
1199 return add_tracepoint_event(list, idx, sys, event,
1200 err, head_config);
1201}
1202
1203int parse_events_add_numeric(struct parse_events_state *parse_state,
1204 struct list_head *list,
1205 u32 type, u64 config,
1206 struct list_head *head_config)
1207{
1208 struct perf_event_attr attr;
1209 LIST_HEAD(config_terms);
1210
1211 memset(&attr, 0, sizeof(attr));
1212 attr.type = type;
1213 attr.config = config;
1214
1215 if (head_config) {
1216 if (config_attr(&attr, head_config, parse_state->error,
1217 config_term_common))
1218 return -EINVAL;
1219
1220 if (get_config_terms(head_config, &config_terms))
1221 return -ENOMEM;
1222 }
1223
1224 return add_event(list, &parse_state->idx, &attr,
1225 get_config_name(head_config), &config_terms);
1226}
1227
1228int parse_events_add_pmu(struct parse_events_state *parse_state,
1229 struct list_head *list, char *name,
1230 struct list_head *head_config,
1231 bool auto_merge_stats,
1232 bool use_alias)
1233{
1234 struct perf_event_attr attr;
1235 struct perf_pmu_info info;
1236 struct perf_pmu *pmu;
1237 struct perf_evsel *evsel;
1238 struct parse_events_error *err = parse_state->error;
1239 bool use_uncore_alias;
1240 LIST_HEAD(config_terms);
1241
1242 pmu = perf_pmu__find(name);
1243 if (!pmu) {
1244 if (asprintf(&err->str,
1245 "Cannot find PMU `%s'. Missing kernel support?",
1246 name) < 0)
1247 err->str = NULL;
1248 return -EINVAL;
1249 }
1250
1251 if (pmu->default_config) {
1252 memcpy(&attr, pmu->default_config,
1253 sizeof(struct perf_event_attr));
1254 } else {
1255 memset(&attr, 0, sizeof(attr));
1256 }
1257
1258 use_uncore_alias = (pmu->is_uncore && use_alias);
1259
1260 if (!head_config) {
1261 attr.type = pmu->type;
1262 evsel = __add_event(list, &parse_state->idx, &attr, NULL, pmu, NULL, auto_merge_stats);
1263 if (evsel) {
1264 evsel->pmu_name = name;
1265 evsel->use_uncore_alias = use_uncore_alias;
1266 return 0;
1267 } else {
1268 return -ENOMEM;
1269 }
1270 }
1271
1272 if (perf_pmu__check_alias(pmu, head_config, &info))
1273 return -EINVAL;
1274
1275
1276
1277
1278
1279 if (config_attr(&attr, head_config, parse_state->error, config_term_pmu))
1280 return -EINVAL;
1281
1282 if (get_config_terms(head_config, &config_terms))
1283 return -ENOMEM;
1284
1285 if (perf_pmu__config(pmu, &attr, head_config, parse_state->error))
1286 return -EINVAL;
1287
1288 evsel = __add_event(list, &parse_state->idx, &attr,
1289 get_config_name(head_config), pmu,
1290 &config_terms, auto_merge_stats);
1291 if (evsel) {
1292 evsel->unit = info.unit;
1293 evsel->scale = info.scale;
1294 evsel->per_pkg = info.per_pkg;
1295 evsel->snapshot = info.snapshot;
1296 evsel->metric_expr = info.metric_expr;
1297 evsel->metric_name = info.metric_name;
1298 evsel->pmu_name = name;
1299 evsel->use_uncore_alias = use_uncore_alias;
1300 }
1301
1302 return evsel ? 0 : -ENOMEM;
1303}
1304
1305int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
1306 char *str, struct list_head **listp)
1307{
1308 struct list_head *head;
1309 struct parse_events_term *term;
1310 struct list_head *list;
1311 struct perf_pmu *pmu = NULL;
1312 int ok = 0;
1313
1314 *listp = NULL;
1315
1316 list = malloc(sizeof(struct list_head));
1317 if (!list)
1318 return -1;
1319 INIT_LIST_HEAD(list);
1320 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1321 struct perf_pmu_alias *alias;
1322
1323 list_for_each_entry(alias, &pmu->aliases, list) {
1324 if (!strcasecmp(alias->name, str)) {
1325 head = malloc(sizeof(struct list_head));
1326 if (!head)
1327 return -1;
1328 INIT_LIST_HEAD(head);
1329 if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
1330 str, 1, false, &str, NULL) < 0)
1331 return -1;
1332 list_add_tail(&term->list, head);
1333
1334 if (!parse_events_add_pmu(parse_state, list,
1335 pmu->name, head,
1336 true, true)) {
1337 pr_debug("%s -> %s/%s/\n", str,
1338 pmu->name, alias->str);
1339 ok++;
1340 }
1341
1342 parse_events_terms__delete(head);
1343 }
1344 }
1345 }
1346 if (!ok)
1347 return -1;
1348 *listp = list;
1349 return 0;
1350}
1351
1352int parse_events__modifier_group(struct list_head *list,
1353 char *event_mod)
1354{
1355 return parse_events__modifier_event(list, event_mod, true);
1356}
1357
1358
1359
1360
1361
1362static bool is_same_uncore_block(const char *pmu_name_a, const char *pmu_name_b)
1363{
1364 char *end_a, *end_b;
1365
1366 end_a = strrchr(pmu_name_a, '_');
1367 end_b = strrchr(pmu_name_b, '_');
1368
1369 if (!end_a || !end_b)
1370 return false;
1371
1372 if ((end_a - pmu_name_a) != (end_b - pmu_name_b))
1373 return false;
1374
1375 return (strncmp(pmu_name_a, pmu_name_b, end_a - pmu_name_a) == 0);
1376}
1377
1378static int
1379parse_events__set_leader_for_uncore_aliase(char *name, struct list_head *list,
1380 struct parse_events_state *parse_state)
1381{
1382 struct perf_evsel *evsel, *leader;
1383 uintptr_t *leaders;
1384 bool is_leader = true;
1385 int i, nr_pmu = 0, total_members, ret = 0;
1386
1387 leader = list_first_entry(list, struct perf_evsel, node);
1388 evsel = list_last_entry(list, struct perf_evsel, node);
1389 total_members = evsel->idx - leader->idx + 1;
1390
1391 leaders = calloc(total_members, sizeof(uintptr_t));
1392 if (WARN_ON(!leaders))
1393 return 0;
1394
1395
1396
1397
1398
1399
1400 __evlist__for_each_entry(list, evsel) {
1401
1402
1403 if (!evsel->use_uncore_alias)
1404 goto out;
1405
1406
1407 if (!is_same_uncore_block(leader->pmu_name, evsel->pmu_name))
1408 goto out;
1409
1410 if (!is_leader)
1411 continue;
1412
1413
1414
1415
1416
1417 if ((leader != evsel) && (leader->pmu_name == evsel->pmu_name)) {
1418 is_leader = false;
1419 continue;
1420 }
1421
1422 WARN_ON(strcmp(leader->name, evsel->name));
1423
1424
1425 leaders[nr_pmu++] = (uintptr_t) evsel;
1426 }
1427
1428
1429 if (nr_pmu == total_members) {
1430 parse_state->nr_groups--;
1431 goto handled;
1432 }
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446 i = 0;
1447 __evlist__for_each_entry(list, evsel) {
1448 if (i >= nr_pmu)
1449 i = 0;
1450 evsel->leader = (struct perf_evsel *) leaders[i++];
1451 }
1452
1453
1454 for (i = 0; i < nr_pmu; i++) {
1455 evsel = (struct perf_evsel *) leaders[i];
1456 evsel->nr_members = total_members / nr_pmu;
1457 evsel->group_name = name ? strdup(name) : NULL;
1458 }
1459
1460
1461 parse_state->nr_groups += nr_pmu - 1;
1462
1463handled:
1464 ret = 1;
1465out:
1466 free(leaders);
1467 return ret;
1468}
1469
1470void parse_events__set_leader(char *name, struct list_head *list,
1471 struct parse_events_state *parse_state)
1472{
1473 struct perf_evsel *leader;
1474
1475 if (list_empty(list)) {
1476 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1477 return;
1478 }
1479
1480 if (parse_events__set_leader_for_uncore_aliase(name, list, parse_state))
1481 return;
1482
1483 __perf_evlist__set_leader(list);
1484 leader = list_entry(list->next, struct perf_evsel, node);
1485 leader->group_name = name ? strdup(name) : NULL;
1486}
1487
1488
1489void parse_events_update_lists(struct list_head *list_event,
1490 struct list_head *list_all)
1491{
1492
1493
1494
1495
1496
1497 list_splice_tail(list_event, list_all);
1498 free(list_event);
1499}
1500
1501struct event_modifier {
1502 int eu;
1503 int ek;
1504 int eh;
1505 int eH;
1506 int eG;
1507 int eI;
1508 int precise;
1509 int precise_max;
1510 int exclude_GH;
1511 int sample_read;
1512 int pinned;
1513 int weak;
1514};
1515
1516static int get_event_modifier(struct event_modifier *mod, char *str,
1517 struct perf_evsel *evsel)
1518{
1519 int eu = evsel ? evsel->attr.exclude_user : 0;
1520 int ek = evsel ? evsel->attr.exclude_kernel : 0;
1521 int eh = evsel ? evsel->attr.exclude_hv : 0;
1522 int eH = evsel ? evsel->attr.exclude_host : 0;
1523 int eG = evsel ? evsel->attr.exclude_guest : 0;
1524 int eI = evsel ? evsel->attr.exclude_idle : 0;
1525 int precise = evsel ? evsel->attr.precise_ip : 0;
1526 int precise_max = 0;
1527 int sample_read = 0;
1528 int pinned = evsel ? evsel->attr.pinned : 0;
1529
1530 int exclude = eu | ek | eh;
1531 int exclude_GH = evsel ? evsel->exclude_GH : 0;
1532 int weak = 0;
1533
1534 memset(mod, 0, sizeof(*mod));
1535
1536 while (*str) {
1537 if (*str == 'u') {
1538 if (!exclude)
1539 exclude = eu = ek = eh = 1;
1540 eu = 0;
1541 } else if (*str == 'k') {
1542 if (!exclude)
1543 exclude = eu = ek = eh = 1;
1544 ek = 0;
1545 } else if (*str == 'h') {
1546 if (!exclude)
1547 exclude = eu = ek = eh = 1;
1548 eh = 0;
1549 } else if (*str == 'G') {
1550 if (!exclude_GH)
1551 exclude_GH = eG = eH = 1;
1552 eG = 0;
1553 } else if (*str == 'H') {
1554 if (!exclude_GH)
1555 exclude_GH = eG = eH = 1;
1556 eH = 0;
1557 } else if (*str == 'I') {
1558 eI = 1;
1559 } else if (*str == 'p') {
1560 precise++;
1561
1562 if (!exclude_GH)
1563 eG = 1;
1564 } else if (*str == 'P') {
1565 precise_max = 1;
1566 } else if (*str == 'S') {
1567 sample_read = 1;
1568 } else if (*str == 'D') {
1569 pinned = 1;
1570 } else if (*str == 'W') {
1571 weak = 1;
1572 } else
1573 break;
1574
1575 ++str;
1576 }
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588 if (precise > 3)
1589 return -EINVAL;
1590
1591 mod->eu = eu;
1592 mod->ek = ek;
1593 mod->eh = eh;
1594 mod->eH = eH;
1595 mod->eG = eG;
1596 mod->eI = eI;
1597 mod->precise = precise;
1598 mod->precise_max = precise_max;
1599 mod->exclude_GH = exclude_GH;
1600 mod->sample_read = sample_read;
1601 mod->pinned = pinned;
1602 mod->weak = weak;
1603
1604 return 0;
1605}
1606
1607
1608
1609
1610
1611static int check_modifier(char *str)
1612{
1613 char *p = str;
1614
1615
1616 if (strlen(str) > (sizeof("ukhGHpppPSDIW") - 1))
1617 return -1;
1618
1619 while (*p) {
1620 if (*p != 'p' && strchr(p + 1, *p))
1621 return -1;
1622 p++;
1623 }
1624
1625 return 0;
1626}
1627
1628int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1629{
1630 struct perf_evsel *evsel;
1631 struct event_modifier mod;
1632
1633 if (str == NULL)
1634 return 0;
1635
1636 if (check_modifier(str))
1637 return -EINVAL;
1638
1639 if (!add && get_event_modifier(&mod, str, NULL))
1640 return -EINVAL;
1641
1642 __evlist__for_each_entry(list, evsel) {
1643 if (add && get_event_modifier(&mod, str, evsel))
1644 return -EINVAL;
1645
1646 evsel->attr.exclude_user = mod.eu;
1647 evsel->attr.exclude_kernel = mod.ek;
1648 evsel->attr.exclude_hv = mod.eh;
1649 evsel->attr.precise_ip = mod.precise;
1650 evsel->attr.exclude_host = mod.eH;
1651 evsel->attr.exclude_guest = mod.eG;
1652 evsel->attr.exclude_idle = mod.eI;
1653 evsel->exclude_GH = mod.exclude_GH;
1654 evsel->sample_read = mod.sample_read;
1655 evsel->precise_max = mod.precise_max;
1656 evsel->weak_group = mod.weak;
1657
1658 if (perf_evsel__is_group_leader(evsel))
1659 evsel->attr.pinned = mod.pinned;
1660 }
1661
1662 return 0;
1663}
1664
1665int parse_events_name(struct list_head *list, char *name)
1666{
1667 struct perf_evsel *evsel;
1668
1669 __evlist__for_each_entry(list, evsel) {
1670 if (!evsel->name)
1671 evsel->name = strdup(name);
1672 }
1673
1674 return 0;
1675}
1676
1677static int
1678comp_pmu(const void *p1, const void *p2)
1679{
1680 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
1681 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
1682
1683 return strcasecmp(pmu1->symbol, pmu2->symbol);
1684}
1685
1686static void perf_pmu__parse_cleanup(void)
1687{
1688 if (perf_pmu_events_list_num > 0) {
1689 struct perf_pmu_event_symbol *p;
1690 int i;
1691
1692 for (i = 0; i < perf_pmu_events_list_num; i++) {
1693 p = perf_pmu_events_list + i;
1694 zfree(&p->symbol);
1695 }
1696 zfree(&perf_pmu_events_list);
1697 perf_pmu_events_list_num = 0;
1698 }
1699}
1700
1701#define SET_SYMBOL(str, stype) \
1702do { \
1703 p->symbol = str; \
1704 if (!p->symbol) \
1705 goto err; \
1706 p->type = stype; \
1707} while (0)
1708
1709
1710
1711
1712
1713static void perf_pmu__parse_init(void)
1714{
1715
1716 struct perf_pmu *pmu = NULL;
1717 struct perf_pmu_alias *alias;
1718 int len = 0;
1719
1720 pmu = NULL;
1721 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1722 list_for_each_entry(alias, &pmu->aliases, list) {
1723 if (strchr(alias->name, '-'))
1724 len++;
1725 len++;
1726 }
1727 }
1728
1729 if (len == 0) {
1730 perf_pmu_events_list_num = -1;
1731 return;
1732 }
1733 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
1734 if (!perf_pmu_events_list)
1735 return;
1736 perf_pmu_events_list_num = len;
1737
1738 len = 0;
1739 pmu = NULL;
1740 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1741 list_for_each_entry(alias, &pmu->aliases, list) {
1742 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
1743 char *tmp = strchr(alias->name, '-');
1744
1745 if (tmp != NULL) {
1746 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
1747 PMU_EVENT_SYMBOL_PREFIX);
1748 p++;
1749 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
1750 len += 2;
1751 } else {
1752 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
1753 len++;
1754 }
1755 }
1756 }
1757 qsort(perf_pmu_events_list, len,
1758 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1759
1760 return;
1761err:
1762 perf_pmu__parse_cleanup();
1763}
1764
1765enum perf_pmu_event_symbol_type
1766perf_pmu__parse_check(const char *name)
1767{
1768 struct perf_pmu_event_symbol p, *r;
1769
1770
1771 if (perf_pmu_events_list_num == 0)
1772 perf_pmu__parse_init();
1773
1774
1775
1776
1777
1778 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
1779 return PMU_EVENT_SYMBOL_ERR;
1780
1781 p.symbol = strdup(name);
1782 r = bsearch(&p, perf_pmu_events_list,
1783 (size_t) perf_pmu_events_list_num,
1784 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1785 zfree(&p.symbol);
1786 return r ? r->type : PMU_EVENT_SYMBOL_ERR;
1787}
1788
1789static int parse_events__scanner(const char *str, void *parse_state, int start_token)
1790{
1791 YY_BUFFER_STATE buffer;
1792 void *scanner;
1793 int ret;
1794
1795 ret = parse_events_lex_init_extra(start_token, &scanner);
1796 if (ret)
1797 return ret;
1798
1799 buffer = parse_events__scan_string(str, scanner);
1800
1801#ifdef PARSER_DEBUG
1802 parse_events_debug = 1;
1803#endif
1804 ret = parse_events_parse(parse_state, scanner);
1805
1806 parse_events__flush_buffer(buffer, scanner);
1807 parse_events__delete_buffer(buffer, scanner);
1808 parse_events_lex_destroy(scanner);
1809 return ret;
1810}
1811
1812
1813
1814
1815int parse_events_terms(struct list_head *terms, const char *str)
1816{
1817 struct parse_events_state parse_state = {
1818 .terms = NULL,
1819 };
1820 int ret;
1821
1822 ret = parse_events__scanner(str, &parse_state, PE_START_TERMS);
1823 if (!ret) {
1824 list_splice(parse_state.terms, terms);
1825 zfree(&parse_state.terms);
1826 return 0;
1827 }
1828
1829 parse_events_terms__delete(parse_state.terms);
1830 return ret;
1831}
1832
1833int parse_events(struct perf_evlist *evlist, const char *str,
1834 struct parse_events_error *err)
1835{
1836 struct parse_events_state parse_state = {
1837 .list = LIST_HEAD_INIT(parse_state.list),
1838 .idx = evlist->nr_entries,
1839 .error = err,
1840 .evlist = evlist,
1841 };
1842 int ret;
1843
1844 ret = parse_events__scanner(str, &parse_state, PE_START_EVENTS);
1845 perf_pmu__parse_cleanup();
1846 if (!ret) {
1847 struct perf_evsel *last;
1848
1849 if (list_empty(&parse_state.list)) {
1850 WARN_ONCE(true, "WARNING: event parser found nothing\n");
1851 return -1;
1852 }
1853
1854 perf_evlist__splice_list_tail(evlist, &parse_state.list);
1855 evlist->nr_groups += parse_state.nr_groups;
1856 last = perf_evlist__last(evlist);
1857 last->cmdline_group_boundary = true;
1858
1859 return 0;
1860 }
1861
1862
1863
1864
1865
1866
1867 return ret;
1868}
1869
1870#define MAX_WIDTH 1000
1871static int get_term_width(void)
1872{
1873 struct winsize ws;
1874
1875 get_term_dimensions(&ws);
1876 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
1877}
1878
1879void parse_events_print_error(struct parse_events_error *err,
1880 const char *event)
1881{
1882 const char *str = "invalid or unsupported event: ";
1883 char _buf[MAX_WIDTH];
1884 char *buf = (char *) event;
1885 int idx = 0;
1886
1887 if (err->str) {
1888
1889 int width = get_term_width() - 2;
1890 int len_event = strlen(event);
1891 int len_str, max_len, cut = 0;
1892
1893
1894
1895
1896
1897 int max_err_idx = 13;
1898
1899
1900
1901
1902
1903 str = "event syntax error: ";
1904 len_str = strlen(str);
1905 max_len = width - len_str;
1906
1907 buf = _buf;
1908
1909
1910 if (err->idx > max_err_idx)
1911 cut = err->idx - max_err_idx;
1912
1913 strncpy(buf, event + cut, max_len);
1914
1915
1916 if (cut)
1917 buf[0] = buf[1] = '.';
1918
1919 if ((len_event - cut) > max_len) {
1920 buf[max_len - 1] = buf[max_len - 2] = '.';
1921 buf[max_len] = 0;
1922 }
1923
1924 idx = len_str + err->idx - cut;
1925 }
1926
1927 fprintf(stderr, "%s'%s'\n", str, buf);
1928 if (idx) {
1929 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err->str);
1930 if (err->help)
1931 fprintf(stderr, "\n%s\n", err->help);
1932 zfree(&err->str);
1933 zfree(&err->help);
1934 }
1935}
1936
1937#undef MAX_WIDTH
1938
1939int parse_events_option(const struct option *opt, const char *str,
1940 int unset __maybe_unused)
1941{
1942 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1943 struct parse_events_error err = { .idx = 0, };
1944 int ret = parse_events(evlist, str, &err);
1945
1946 if (ret) {
1947 parse_events_print_error(&err, str);
1948 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1949 }
1950
1951 return ret;
1952}
1953
1954static int
1955foreach_evsel_in_last_glob(struct perf_evlist *evlist,
1956 int (*func)(struct perf_evsel *evsel,
1957 const void *arg),
1958 const void *arg)
1959{
1960 struct perf_evsel *last = NULL;
1961 int err;
1962
1963
1964
1965
1966
1967
1968
1969 if (evlist->nr_entries > 0)
1970 last = perf_evlist__last(evlist);
1971
1972 do {
1973 err = (*func)(last, arg);
1974 if (err)
1975 return -1;
1976 if (!last)
1977 return 0;
1978
1979 if (last->node.prev == &evlist->entries)
1980 return 0;
1981 last = list_entry(last->node.prev, struct perf_evsel, node);
1982 } while (!last->cmdline_group_boundary);
1983
1984 return 0;
1985}
1986
1987static int set_filter(struct perf_evsel *evsel, const void *arg)
1988{
1989 const char *str = arg;
1990 bool found = false;
1991 int nr_addr_filters = 0;
1992 struct perf_pmu *pmu = NULL;
1993
1994 if (evsel == NULL)
1995 goto err;
1996
1997 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
1998 if (perf_evsel__append_tp_filter(evsel, str) < 0) {
1999 fprintf(stderr,
2000 "not enough memory to hold filter string\n");
2001 return -1;
2002 }
2003
2004 return 0;
2005 }
2006
2007 while ((pmu = perf_pmu__scan(pmu)) != NULL)
2008 if (pmu->type == evsel->attr.type) {
2009 found = true;
2010 break;
2011 }
2012
2013 if (found)
2014 perf_pmu__scan_file(pmu, "nr_addr_filters",
2015 "%d", &nr_addr_filters);
2016
2017 if (!nr_addr_filters)
2018 goto err;
2019
2020 if (perf_evsel__append_addr_filter(evsel, str) < 0) {
2021 fprintf(stderr,
2022 "not enough memory to hold filter string\n");
2023 return -1;
2024 }
2025
2026 return 0;
2027
2028err:
2029 fprintf(stderr,
2030 "--filter option should follow a -e tracepoint or HW tracer option\n");
2031
2032 return -1;
2033}
2034
2035int parse_filter(const struct option *opt, const char *str,
2036 int unset __maybe_unused)
2037{
2038 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
2039
2040 return foreach_evsel_in_last_glob(evlist, set_filter,
2041 (const void *)str);
2042}
2043
2044static int add_exclude_perf_filter(struct perf_evsel *evsel,
2045 const void *arg __maybe_unused)
2046{
2047 char new_filter[64];
2048
2049 if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) {
2050 fprintf(stderr,
2051 "--exclude-perf option should follow a -e tracepoint option\n");
2052 return -1;
2053 }
2054
2055 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
2056
2057 if (perf_evsel__append_tp_filter(evsel, new_filter) < 0) {
2058 fprintf(stderr,
2059 "not enough memory to hold filter string\n");
2060 return -1;
2061 }
2062
2063 return 0;
2064}
2065
2066int exclude_perf(const struct option *opt,
2067 const char *arg __maybe_unused,
2068 int unset __maybe_unused)
2069{
2070 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
2071
2072 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
2073 NULL);
2074}
2075
2076static const char * const event_type_descriptors[] = {
2077 "Hardware event",
2078 "Software event",
2079 "Tracepoint event",
2080 "Hardware cache event",
2081 "Raw hardware event descriptor",
2082 "Hardware breakpoint",
2083};
2084
2085static int cmp_string(const void *a, const void *b)
2086{
2087 const char * const *as = a;
2088 const char * const *bs = b;
2089
2090 return strcmp(*as, *bs);
2091}
2092
2093
2094
2095
2096
2097void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
2098 bool name_only)
2099{
2100 DIR *sys_dir, *evt_dir;
2101 struct dirent *sys_dirent, *evt_dirent;
2102 char evt_path[MAXPATHLEN];
2103 char *dir_path;
2104 char **evt_list = NULL;
2105 unsigned int evt_i = 0, evt_num = 0;
2106 bool evt_num_known = false;
2107
2108restart:
2109 sys_dir = tracing_events__opendir();
2110 if (!sys_dir)
2111 return;
2112
2113 if (evt_num_known) {
2114 evt_list = zalloc(sizeof(char *) * evt_num);
2115 if (!evt_list)
2116 goto out_close_sys_dir;
2117 }
2118
2119 for_each_subsystem(sys_dir, sys_dirent) {
2120 if (subsys_glob != NULL &&
2121 !strglobmatch(sys_dirent->d_name, subsys_glob))
2122 continue;
2123
2124 dir_path = get_events_file(sys_dirent->d_name);
2125 if (!dir_path)
2126 continue;
2127 evt_dir = opendir(dir_path);
2128 if (!evt_dir)
2129 goto next;
2130
2131 for_each_event(dir_path, evt_dir, evt_dirent) {
2132 if (event_glob != NULL &&
2133 !strglobmatch(evt_dirent->d_name, event_glob))
2134 continue;
2135
2136 if (!evt_num_known) {
2137 evt_num++;
2138 continue;
2139 }
2140
2141 snprintf(evt_path, MAXPATHLEN, "%s:%s",
2142 sys_dirent->d_name, evt_dirent->d_name);
2143
2144 evt_list[evt_i] = strdup(evt_path);
2145 if (evt_list[evt_i] == NULL) {
2146 put_events_file(dir_path);
2147 goto out_close_evt_dir;
2148 }
2149 evt_i++;
2150 }
2151 closedir(evt_dir);
2152next:
2153 put_events_file(dir_path);
2154 }
2155 closedir(sys_dir);
2156
2157 if (!evt_num_known) {
2158 evt_num_known = true;
2159 goto restart;
2160 }
2161 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2162 evt_i = 0;
2163 while (evt_i < evt_num) {
2164 if (name_only) {
2165 printf("%s ", evt_list[evt_i++]);
2166 continue;
2167 }
2168 printf(" %-50s [%s]\n", evt_list[evt_i++],
2169 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
2170 }
2171 if (evt_num && pager_in_use())
2172 printf("\n");
2173
2174out_free:
2175 evt_num = evt_i;
2176 for (evt_i = 0; evt_i < evt_num; evt_i++)
2177 zfree(&evt_list[evt_i]);
2178 zfree(&evt_list);
2179 return;
2180
2181out_close_evt_dir:
2182 closedir(evt_dir);
2183out_close_sys_dir:
2184 closedir(sys_dir);
2185
2186 printf("FATAL: not enough memory to print %s\n",
2187 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
2188 if (evt_list)
2189 goto out_free;
2190}
2191
2192
2193
2194
2195
2196int is_valid_tracepoint(const char *event_string)
2197{
2198 DIR *sys_dir, *evt_dir;
2199 struct dirent *sys_dirent, *evt_dirent;
2200 char evt_path[MAXPATHLEN];
2201 char *dir_path;
2202
2203 sys_dir = tracing_events__opendir();
2204 if (!sys_dir)
2205 return 0;
2206
2207 for_each_subsystem(sys_dir, sys_dirent) {
2208 dir_path = get_events_file(sys_dirent->d_name);
2209 if (!dir_path)
2210 continue;
2211 evt_dir = opendir(dir_path);
2212 if (!evt_dir)
2213 goto next;
2214
2215 for_each_event(dir_path, evt_dir, evt_dirent) {
2216 snprintf(evt_path, MAXPATHLEN, "%s:%s",
2217 sys_dirent->d_name, evt_dirent->d_name);
2218 if (!strcmp(evt_path, event_string)) {
2219 closedir(evt_dir);
2220 closedir(sys_dir);
2221 return 1;
2222 }
2223 }
2224 closedir(evt_dir);
2225next:
2226 put_events_file(dir_path);
2227 }
2228 closedir(sys_dir);
2229 return 0;
2230}
2231
2232static bool is_event_supported(u8 type, unsigned config)
2233{
2234 bool ret = true;
2235 int open_return;
2236 struct perf_evsel *evsel;
2237 struct perf_event_attr attr = {
2238 .type = type,
2239 .config = config,
2240 .disabled = 1,
2241 };
2242 struct thread_map *tmap = thread_map__new_by_tid(0);
2243
2244 if (tmap == NULL)
2245 return false;
2246
2247 evsel = perf_evsel__new(&attr);
2248 if (evsel) {
2249 open_return = perf_evsel__open(evsel, NULL, tmap);
2250 ret = open_return >= 0;
2251
2252 if (open_return == -EACCES) {
2253
2254
2255
2256
2257
2258
2259
2260 evsel->attr.exclude_kernel = 1;
2261 ret = perf_evsel__open(evsel, NULL, tmap) >= 0;
2262 }
2263 perf_evsel__delete(evsel);
2264 }
2265
2266 return ret;
2267}
2268
2269void print_sdt_events(const char *subsys_glob, const char *event_glob,
2270 bool name_only)
2271{
2272 struct probe_cache *pcache;
2273 struct probe_cache_entry *ent;
2274 struct strlist *bidlist, *sdtlist;
2275 struct strlist_config cfg = {.dont_dupstr = true};
2276 struct str_node *nd, *nd2;
2277 char *buf, *path, *ptr = NULL;
2278 bool show_detail = false;
2279 int ret;
2280
2281 sdtlist = strlist__new(NULL, &cfg);
2282 if (!sdtlist) {
2283 pr_debug("Failed to allocate new strlist for SDT\n");
2284 return;
2285 }
2286 bidlist = build_id_cache__list_all(true);
2287 if (!bidlist) {
2288 pr_debug("Failed to get buildids: %d\n", errno);
2289 return;
2290 }
2291 strlist__for_each_entry(nd, bidlist) {
2292 pcache = probe_cache__new(nd->s, NULL);
2293 if (!pcache)
2294 continue;
2295 list_for_each_entry(ent, &pcache->entries, node) {
2296 if (!ent->sdt)
2297 continue;
2298 if (subsys_glob &&
2299 !strglobmatch(ent->pev.group, subsys_glob))
2300 continue;
2301 if (event_glob &&
2302 !strglobmatch(ent->pev.event, event_glob))
2303 continue;
2304 ret = asprintf(&buf, "%s:%s@%s", ent->pev.group,
2305 ent->pev.event, nd->s);
2306 if (ret > 0)
2307 strlist__add(sdtlist, buf);
2308 }
2309 probe_cache__delete(pcache);
2310 }
2311 strlist__delete(bidlist);
2312
2313 strlist__for_each_entry(nd, sdtlist) {
2314 buf = strchr(nd->s, '@');
2315 if (buf)
2316 *(buf++) = '\0';
2317 if (name_only) {
2318 printf("%s ", nd->s);
2319 continue;
2320 }
2321 nd2 = strlist__next(nd);
2322 if (nd2) {
2323 ptr = strchr(nd2->s, '@');
2324 if (ptr)
2325 *ptr = '\0';
2326 if (strcmp(nd->s, nd2->s) == 0)
2327 show_detail = true;
2328 }
2329 if (show_detail) {
2330 path = build_id_cache__origname(buf);
2331 ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf);
2332 if (ret > 0) {
2333 printf(" %-50s [%s]\n", buf, "SDT event");
2334 free(buf);
2335 }
2336 } else
2337 printf(" %-50s [%s]\n", nd->s, "SDT event");
2338 if (nd2) {
2339 if (strcmp(nd->s, nd2->s) != 0)
2340 show_detail = false;
2341 if (ptr)
2342 *ptr = '@';
2343 }
2344 }
2345 strlist__delete(sdtlist);
2346}
2347
2348int print_hwcache_events(const char *event_glob, bool name_only)
2349{
2350 unsigned int type, op, i, evt_i = 0, evt_num = 0;
2351 char name[64];
2352 char **evt_list = NULL;
2353 bool evt_num_known = false;
2354
2355restart:
2356 if (evt_num_known) {
2357 evt_list = zalloc(sizeof(char *) * evt_num);
2358 if (!evt_list)
2359 goto out_enomem;
2360 }
2361
2362 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
2363 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
2364
2365 if (!perf_evsel__is_cache_op_valid(type, op))
2366 continue;
2367
2368 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
2369 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
2370 name, sizeof(name));
2371 if (event_glob != NULL && !strglobmatch(name, event_glob))
2372 continue;
2373
2374 if (!is_event_supported(PERF_TYPE_HW_CACHE,
2375 type | (op << 8) | (i << 16)))
2376 continue;
2377
2378 if (!evt_num_known) {
2379 evt_num++;
2380 continue;
2381 }
2382
2383 evt_list[evt_i] = strdup(name);
2384 if (evt_list[evt_i] == NULL)
2385 goto out_enomem;
2386 evt_i++;
2387 }
2388 }
2389 }
2390
2391 if (!evt_num_known) {
2392 evt_num_known = true;
2393 goto restart;
2394 }
2395 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2396 evt_i = 0;
2397 while (evt_i < evt_num) {
2398 if (name_only) {
2399 printf("%s ", evt_list[evt_i++]);
2400 continue;
2401 }
2402 printf(" %-50s [%s]\n", evt_list[evt_i++],
2403 event_type_descriptors[PERF_TYPE_HW_CACHE]);
2404 }
2405 if (evt_num && pager_in_use())
2406 printf("\n");
2407
2408out_free:
2409 evt_num = evt_i;
2410 for (evt_i = 0; evt_i < evt_num; evt_i++)
2411 zfree(&evt_list[evt_i]);
2412 zfree(&evt_list);
2413 return evt_num;
2414
2415out_enomem:
2416 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]);
2417 if (evt_list)
2418 goto out_free;
2419 return evt_num;
2420}
2421
2422void print_symbol_events(const char *event_glob, unsigned type,
2423 struct event_symbol *syms, unsigned max,
2424 bool name_only)
2425{
2426 unsigned int i, evt_i = 0, evt_num = 0;
2427 char name[MAX_NAME_LEN];
2428 char **evt_list = NULL;
2429 bool evt_num_known = false;
2430
2431restart:
2432 if (evt_num_known) {
2433 evt_list = zalloc(sizeof(char *) * evt_num);
2434 if (!evt_list)
2435 goto out_enomem;
2436 syms -= max;
2437 }
2438
2439 for (i = 0; i < max; i++, syms++) {
2440
2441 if (event_glob != NULL && syms->symbol != NULL &&
2442 !(strglobmatch(syms->symbol, event_glob) ||
2443 (syms->alias && strglobmatch(syms->alias, event_glob))))
2444 continue;
2445
2446 if (!is_event_supported(type, i))
2447 continue;
2448
2449 if (!evt_num_known) {
2450 evt_num++;
2451 continue;
2452 }
2453
2454 if (!name_only && strlen(syms->alias))
2455 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
2456 else
2457 strncpy(name, syms->symbol, MAX_NAME_LEN);
2458
2459 evt_list[evt_i] = strdup(name);
2460 if (evt_list[evt_i] == NULL)
2461 goto out_enomem;
2462 evt_i++;
2463 }
2464
2465 if (!evt_num_known) {
2466 evt_num_known = true;
2467 goto restart;
2468 }
2469 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2470 evt_i = 0;
2471 while (evt_i < evt_num) {
2472 if (name_only) {
2473 printf("%s ", evt_list[evt_i++]);
2474 continue;
2475 }
2476 printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);
2477 }
2478 if (evt_num && pager_in_use())
2479 printf("\n");
2480
2481out_free:
2482 evt_num = evt_i;
2483 for (evt_i = 0; evt_i < evt_num; evt_i++)
2484 zfree(&evt_list[evt_i]);
2485 zfree(&evt_list);
2486 return;
2487
2488out_enomem:
2489 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]);
2490 if (evt_list)
2491 goto out_free;
2492}
2493
2494
2495
2496
2497void print_events(const char *event_glob, bool name_only, bool quiet_flag,
2498 bool long_desc, bool details_flag)
2499{
2500 print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
2501 event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
2502
2503 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
2504 event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
2505
2506 print_hwcache_events(event_glob, name_only);
2507
2508 print_pmu_events(event_glob, name_only, quiet_flag, long_desc,
2509 details_flag);
2510
2511 if (event_glob != NULL)
2512 return;
2513
2514 if (!name_only) {
2515 printf(" %-50s [%s]\n",
2516 "rNNN",
2517 event_type_descriptors[PERF_TYPE_RAW]);
2518 printf(" %-50s [%s]\n",
2519 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
2520 event_type_descriptors[PERF_TYPE_RAW]);
2521 if (pager_in_use())
2522 printf(" (see 'man perf-list' on how to encode it)\n\n");
2523
2524 printf(" %-50s [%s]\n",
2525 "mem:<addr>[/len][:access]",
2526 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
2527 if (pager_in_use())
2528 printf("\n");
2529 }
2530
2531 print_tracepoint_events(NULL, NULL, name_only);
2532
2533 print_sdt_events(NULL, NULL, name_only);
2534
2535 metricgroup__print(true, true, NULL, name_only);
2536}
2537
2538int parse_events__is_hardcoded_term(struct parse_events_term *term)
2539{
2540 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2541}
2542
2543static int new_term(struct parse_events_term **_term,
2544 struct parse_events_term *temp,
2545 char *str, u64 num)
2546{
2547 struct parse_events_term *term;
2548
2549 term = malloc(sizeof(*term));
2550 if (!term)
2551 return -ENOMEM;
2552
2553 *term = *temp;
2554 INIT_LIST_HEAD(&term->list);
2555 term->weak = false;
2556
2557 switch (term->type_val) {
2558 case PARSE_EVENTS__TERM_TYPE_NUM:
2559 term->val.num = num;
2560 break;
2561 case PARSE_EVENTS__TERM_TYPE_STR:
2562 term->val.str = str;
2563 break;
2564 default:
2565 free(term);
2566 return -EINVAL;
2567 }
2568
2569 *_term = term;
2570 return 0;
2571}
2572
2573int parse_events_term__num(struct parse_events_term **term,
2574 int type_term, char *config, u64 num,
2575 bool no_value,
2576 void *loc_term_, void *loc_val_)
2577{
2578 YYLTYPE *loc_term = loc_term_;
2579 YYLTYPE *loc_val = loc_val_;
2580
2581 struct parse_events_term temp = {
2582 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
2583 .type_term = type_term,
2584 .config = config,
2585 .no_value = no_value,
2586 .err_term = loc_term ? loc_term->first_column : 0,
2587 .err_val = loc_val ? loc_val->first_column : 0,
2588 };
2589
2590 return new_term(term, &temp, NULL, num);
2591}
2592
2593int parse_events_term__str(struct parse_events_term **term,
2594 int type_term, char *config, char *str,
2595 void *loc_term_, void *loc_val_)
2596{
2597 YYLTYPE *loc_term = loc_term_;
2598 YYLTYPE *loc_val = loc_val_;
2599
2600 struct parse_events_term temp = {
2601 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2602 .type_term = type_term,
2603 .config = config,
2604 .err_term = loc_term ? loc_term->first_column : 0,
2605 .err_val = loc_val ? loc_val->first_column : 0,
2606 };
2607
2608 return new_term(term, &temp, str, 0);
2609}
2610
2611int parse_events_term__sym_hw(struct parse_events_term **term,
2612 char *config, unsigned idx)
2613{
2614 struct event_symbol *sym;
2615 struct parse_events_term temp = {
2616 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2617 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
2618 .config = config ?: (char *) "event",
2619 };
2620
2621 BUG_ON(idx >= PERF_COUNT_HW_MAX);
2622 sym = &event_symbols_hw[idx];
2623
2624 return new_term(term, &temp, (char *) sym->symbol, 0);
2625}
2626
2627int parse_events_term__clone(struct parse_events_term **new,
2628 struct parse_events_term *term)
2629{
2630 struct parse_events_term temp = {
2631 .type_val = term->type_val,
2632 .type_term = term->type_term,
2633 .config = term->config,
2634 .err_term = term->err_term,
2635 .err_val = term->err_val,
2636 };
2637
2638 return new_term(new, &temp, term->val.str, term->val.num);
2639}
2640
2641int parse_events_copy_term_list(struct list_head *old,
2642 struct list_head **new)
2643{
2644 struct parse_events_term *term, *n;
2645 int ret;
2646
2647 if (!old) {
2648 *new = NULL;
2649 return 0;
2650 }
2651
2652 *new = malloc(sizeof(struct list_head));
2653 if (!*new)
2654 return -ENOMEM;
2655 INIT_LIST_HEAD(*new);
2656
2657 list_for_each_entry (term, old, list) {
2658 ret = parse_events_term__clone(&n, term);
2659 if (ret)
2660 return ret;
2661 list_add_tail(&n->list, *new);
2662 }
2663 return 0;
2664}
2665
2666void parse_events_terms__purge(struct list_head *terms)
2667{
2668 struct parse_events_term *term, *h;
2669
2670 list_for_each_entry_safe(term, h, terms, list) {
2671 if (term->array.nr_ranges)
2672 zfree(&term->array.ranges);
2673 list_del_init(&term->list);
2674 free(term);
2675 }
2676}
2677
2678void parse_events_terms__delete(struct list_head *terms)
2679{
2680 if (!terms)
2681 return;
2682 parse_events_terms__purge(terms);
2683 free(terms);
2684}
2685
2686void parse_events__clear_array(struct parse_events_array *a)
2687{
2688 zfree(&a->ranges);
2689}
2690
2691void parse_events_evlist_error(struct parse_events_state *parse_state,
2692 int idx, const char *str)
2693{
2694 struct parse_events_error *err = parse_state->error;
2695
2696 if (!err)
2697 return;
2698 err->idx = idx;
2699 err->str = strdup(str);
2700 WARN_ONCE(!err->str, "WARNING: failed to allocate error string");
2701}
2702
2703static void config_terms_list(char *buf, size_t buf_sz)
2704{
2705 int i;
2706 bool first = true;
2707
2708 buf[0] = '\0';
2709 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2710 const char *name = config_term_names[i];
2711
2712 if (!config_term_avail(i, NULL))
2713 continue;
2714 if (!name)
2715 continue;
2716 if (name[0] == '<')
2717 continue;
2718
2719 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2720 return;
2721
2722 if (!first)
2723 strcat(buf, ",");
2724 else
2725 first = false;
2726 strcat(buf, name);
2727 }
2728}
2729
2730
2731
2732
2733
2734char *parse_events_formats_error_string(char *additional_terms)
2735{
2736 char *str;
2737
2738 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2739 (sizeof("no-overwrite") - 1)];
2740
2741 config_terms_list(static_terms, sizeof(static_terms));
2742
2743 if (additional_terms) {
2744 if (asprintf(&str, "valid terms: %s,%s",
2745 additional_terms, static_terms) < 0)
2746 goto fail;
2747 } else {
2748 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
2749 goto fail;
2750 }
2751 return str;
2752
2753fail:
2754 return NULL;
2755}
2756
