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Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / tools / perf / util / parse-events.c
blob34589c427e524dd952d3d8bf630e5c8ca9efbb70
1 // SPDX-License-Identifier: GPL-2.0
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
40 extern int parse_events_debug;
41 #endif
42 int parse_events_parse(void *parse_state, void *scanner);
43 static int get_config_terms(struct list_head *head_config,
44 struct list_head *head_terms __maybe_unused);
45
46 static struct perf_pmu_event_symbol *perf_pmu_events_list;
47 /*
48 * The variable indicates the number of supported pmu event symbols.
49 * 0 means not initialized and ready to init
50 * -1 means failed to init, don't try anymore
51 * >0 is the number of supported pmu event symbols
52 */
53 static int perf_pmu_events_list_num;
54
55 struct 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
98 struct 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
159 static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
160 {
161 char evt_path[MAXPATHLEN];
162 int fd;
163
164 snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
165 sys_dir->d_name, evt_dir->d_name);
166 fd = open(evt_path, O_RDONLY);
167 if (fd < 0)
168 return -EINVAL;
169 close(fd);
170
171 return 0;
172 }
173
174 #define for_each_event(sys_dirent, evt_dir, evt_dirent) \
175 while ((evt_dirent = readdir(evt_dir)) != NULL) \
176 if (evt_dirent->d_type == DT_DIR && \
177 (strcmp(evt_dirent->d_name, ".")) && \
178 (strcmp(evt_dirent->d_name, "..")) && \
179 (!tp_event_has_id(sys_dirent, evt_dirent)))
180
181 #define MAX_EVENT_LENGTH 512
182
183
184 struct tracepoint_path *tracepoint_id_to_path(u64 config)
185 {
186 struct tracepoint_path *path = NULL;
187 DIR *sys_dir, *evt_dir;
188 struct dirent *sys_dirent, *evt_dirent;
189 char id_buf[24];
190 int fd;
191 u64 id;
192 char evt_path[MAXPATHLEN];
193 char dir_path[MAXPATHLEN];
194
195 sys_dir = opendir(tracing_events_path);
196 if (!sys_dir)
197 return NULL;
198
199 for_each_subsystem(sys_dir, sys_dirent) {
200
201 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
202 sys_dirent->d_name);
203 evt_dir = opendir(dir_path);
204 if (!evt_dir)
205 continue;
206
207 for_each_event(sys_dirent, evt_dir, evt_dirent) {
208
209 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
210 evt_dirent->d_name);
211 fd = open(evt_path, O_RDONLY);
212 if (fd < 0)
213 continue;
214 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
215 close(fd);
216 continue;
217 }
218 close(fd);
219 id = atoll(id_buf);
220 if (id == config) {
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);
245 }
246
247 closedir(sys_dir);
248 return NULL;
249 }
250
251 struct tracepoint_path *tracepoint_name_to_path(const char *name)
252 {
253 struct tracepoint_path *path = zalloc(sizeof(*path));
254 char *str = strchr(name, ':');
255
256 if (path == NULL || str == NULL) {
257 free(path);
258 return NULL;
259 }
260
261 path->system = strndup(name, str - name);
262 path->name = strdup(str+1);
263
264 if (path->system == NULL || path->name == NULL) {
265 zfree(&path->system);
266 zfree(&path->name);
267 zfree(&path);
268 }
269
270 return path;
271 }
272
273 const char *event_type(int type)
274 {
275 switch (type) {
276 case PERF_TYPE_HARDWARE:
277 return "hardware";
278
279 case PERF_TYPE_SOFTWARE:
280 return "software";
281
282 case PERF_TYPE_TRACEPOINT:
283 return "tracepoint";
284
285 case PERF_TYPE_HW_CACHE:
286 return "hardware-cache";
287
288 default:
289 break;
290 }
291
292 return "unknown";
293 }
294
295 static int parse_events__is_name_term(struct parse_events_term *term)
296 {
297 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
298 }
299
300 static char *get_config_name(struct list_head *head_terms)
301 {
302 struct parse_events_term *term;
303
304 if (!head_terms)
305 return NULL;
306
307 list_for_each_entry(term, head_terms, list)
308 if (parse_events__is_name_term(term))
309 return term->val.str;
310
311 return NULL;
312 }
313
314 static struct perf_evsel *
315 __add_event(struct list_head *list, int *idx,
316 struct perf_event_attr *attr,
317 char *name, struct perf_pmu *pmu,
318 struct list_head *config_terms, bool auto_merge_stats)
319 {
320 struct perf_evsel *evsel;
321 struct cpu_map *cpus = pmu ? pmu->cpus : NULL;
322
323 event_attr_init(attr);
324
325 evsel = perf_evsel__new_idx(attr, *idx);
326 if (!evsel)
327 return NULL;
328
329 (*idx)++;
330 evsel->cpus = cpu_map__get(cpus);
331 evsel->own_cpus = cpu_map__get(cpus);
332 evsel->system_wide = pmu ? pmu->is_uncore : false;
333 evsel->auto_merge_stats = auto_merge_stats;
334
335 if (name)
336 evsel->name = strdup(name);
337
338 if (config_terms)
339 list_splice(config_terms, &evsel->config_terms);
340
341 list_add_tail(&evsel->node, list);
342 return evsel;
343 }
344
345 static int add_event(struct list_head *list, int *idx,
346 struct perf_event_attr *attr, char *name,
347 struct list_head *config_terms)
348 {
349 return __add_event(list, idx, attr, name, NULL, config_terms, false) ? 0 : -ENOMEM;
350 }
351
352 static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
353 {
354 int i, j;
355 int n, longest = -1;
356
357 for (i = 0; i < size; i++) {
358 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
359 n = strlen(names[i][j]);
360 if (n > longest && !strncasecmp(str, names[i][j], n))
361 longest = n;
362 }
363 if (longest > 0)
364 return i;
365 }
366
367 return -1;
368 }
369
370 typedef int config_term_func_t(struct perf_event_attr *attr,
371 struct parse_events_term *term,
372 struct parse_events_error *err);
373 static int config_term_common(struct perf_event_attr *attr,
374 struct parse_events_term *term,
375 struct parse_events_error *err);
376 static int config_attr(struct perf_event_attr *attr,
377 struct list_head *head,
378 struct parse_events_error *err,
379 config_term_func_t config_term);
380
381 int parse_events_add_cache(struct list_head *list, int *idx,
382 char *type, char *op_result1, char *op_result2,
383 struct parse_events_error *err,
384 struct list_head *head_config)
385 {
386 struct perf_event_attr attr;
387 LIST_HEAD(config_terms);
388 char name[MAX_NAME_LEN], *config_name;
389 int cache_type = -1, cache_op = -1, cache_result = -1;
390 char *op_result[2] = { op_result1, op_result2 };
391 int i, n;
392
393 /*
394 * No fallback - if we cannot get a clear cache type
395 * then bail out:
396 */
397 cache_type = parse_aliases(type, perf_evsel__hw_cache,
398 PERF_COUNT_HW_CACHE_MAX);
399 if (cache_type == -1)
400 return -EINVAL;
401
402 config_name = get_config_name(head_config);
403 n = snprintf(name, MAX_NAME_LEN, "%s", type);
404
405 for (i = 0; (i < 2) && (op_result[i]); i++) {
406 char *str = op_result[i];
407
408 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
409
410 if (cache_op == -1) {
411 cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
412 PERF_COUNT_HW_CACHE_OP_MAX);
413 if (cache_op >= 0) {
414 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
415 return -EINVAL;
416 continue;
417 }
418 }
419
420 if (cache_result == -1) {
421 cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
422 PERF_COUNT_HW_CACHE_RESULT_MAX);
423 if (cache_result >= 0)
424 continue;
425 }
426 }
427
428 /*
429 * Fall back to reads:
430 */
431 if (cache_op == -1)
432 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
433
434 /*
435 * Fall back to accesses:
436 */
437 if (cache_result == -1)
438 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
439
440 memset(&attr, 0, sizeof(attr));
441 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
442 attr.type = PERF_TYPE_HW_CACHE;
443
444 if (head_config) {
445 if (config_attr(&attr, head_config, err,
446 config_term_common))
447 return -EINVAL;
448
449 if (get_config_terms(head_config, &config_terms))
450 return -ENOMEM;
451 }
452 return add_event(list, idx, &attr, config_name ? : name, &config_terms);
453 }
454
455 static void tracepoint_error(struct parse_events_error *e, int err,
456 const char *sys, const char *name)
457 {
458 char help[BUFSIZ];
459
460 if (!e)
461 return;
462
463 /*
464 * We get error directly from syscall errno ( > 0),
465 * or from encoded pointer's error ( < 0).
466 */
467 err = abs(err);
468
469 switch (err) {
470 case EACCES:
471 e->str = strdup("can't access trace events");
472 break;
473 case ENOENT:
474 e->str = strdup("unknown tracepoint");
475 break;
476 default:
477 e->str = strdup("failed to add tracepoint");
478 break;
479 }
480
481 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
482 e->help = strdup(help);
483 }
484
485 static int add_tracepoint(struct list_head *list, int *idx,
486 const char *sys_name, const char *evt_name,
487 struct parse_events_error *err,
488 struct list_head *head_config)
489 {
490 struct perf_evsel *evsel;
491
492 evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
493 if (IS_ERR(evsel)) {
494 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name);
495 return PTR_ERR(evsel);
496 }
497
498 if (head_config) {
499 LIST_HEAD(config_terms);
500
501 if (get_config_terms(head_config, &config_terms))
502 return -ENOMEM;
503 list_splice(&config_terms, &evsel->config_terms);
504 }
505
506 list_add_tail(&evsel->node, list);
507 return 0;
508 }
509
510 static int add_tracepoint_multi_event(struct list_head *list, int *idx,
511 const char *sys_name, const char *evt_name,
512 struct parse_events_error *err,
513 struct list_head *head_config)
514 {
515 char evt_path[MAXPATHLEN];
516 struct dirent *evt_ent;
517 DIR *evt_dir;
518 int ret = 0, found = 0;
519
520 snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
521 evt_dir = opendir(evt_path);
522 if (!evt_dir) {
523 tracepoint_error(err, errno, sys_name, evt_name);
524 return -1;
525 }
526
527 while (!ret && (evt_ent = readdir(evt_dir))) {
528 if (!strcmp(evt_ent->d_name, ".")
529 || !strcmp(evt_ent->d_name, "..")
530 || !strcmp(evt_ent->d_name, "enable")
531 || !strcmp(evt_ent->d_name, "filter"))
532 continue;
533
534 if (!strglobmatch(evt_ent->d_name, evt_name))
535 continue;
536
537 found++;
538
539 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name,
540 err, head_config);
541 }
542
543 if (!found) {
544 tracepoint_error(err, ENOENT, sys_name, evt_name);
545 ret = -1;
546 }
547
548 closedir(evt_dir);
549 return ret;
550 }
551
552 static int add_tracepoint_event(struct list_head *list, int *idx,
553 const char *sys_name, const char *evt_name,
554 struct parse_events_error *err,
555 struct list_head *head_config)
556 {
557 return strpbrk(evt_name, "*?") ?
558 add_tracepoint_multi_event(list, idx, sys_name, evt_name,
559 err, head_config) :
560 add_tracepoint(list, idx, sys_name, evt_name,
561 err, head_config);
562 }
563
564 static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
565 const char *sys_name, const char *evt_name,
566 struct parse_events_error *err,
567 struct list_head *head_config)
568 {
569 struct dirent *events_ent;
570 DIR *events_dir;
571 int ret = 0;
572
573 events_dir = opendir(tracing_events_path);
574 if (!events_dir) {
575 tracepoint_error(err, errno, sys_name, evt_name);
576 return -1;
577 }
578
579 while (!ret && (events_ent = readdir(events_dir))) {
580 if (!strcmp(events_ent->d_name, ".")
581 || !strcmp(events_ent->d_name, "..")
582 || !strcmp(events_ent->d_name, "enable")
583 || !strcmp(events_ent->d_name, "header_event")
584 || !strcmp(events_ent->d_name, "header_page"))
585 continue;
586
587 if (!strglobmatch(events_ent->d_name, sys_name))
588 continue;
589
590 ret = add_tracepoint_event(list, idx, events_ent->d_name,
591 evt_name, err, head_config);
592 }
593
594 closedir(events_dir);
595 return ret;
596 }
597
598 struct __add_bpf_event_param {
599 struct parse_events_state *parse_state;
600 struct list_head *list;
601 struct list_head *head_config;
602 };
603
604 static int add_bpf_event(const char *group, const char *event, int fd,
605 void *_param)
606 {
607 LIST_HEAD(new_evsels);
608 struct __add_bpf_event_param *param = _param;
609 struct parse_events_state *parse_state = param->parse_state;
610 struct list_head *list = param->list;
611 struct perf_evsel *pos;
612 int err;
613
614 pr_debug("add bpf event %s:%s and attach bpf program %d\n",
615 group, event, fd);
616
617 err = parse_events_add_tracepoint(&new_evsels, &parse_state->idx, group,
618 event, parse_state->error,
619 param->head_config);
620 if (err) {
621 struct perf_evsel *evsel, *tmp;
622
623 pr_debug("Failed to add BPF event %s:%s\n",
624 group, event);
625 list_for_each_entry_safe(evsel, tmp, &new_evsels, node) {
626 list_del(&evsel->node);
627 perf_evsel__delete(evsel);
628 }
629 return err;
630 }
631 pr_debug("adding %s:%s\n", group, event);
632
633 list_for_each_entry(pos, &new_evsels, node) {
634 pr_debug("adding %s:%s to %p\n",
635 group, event, pos);
636 pos->bpf_fd = fd;
637 }
638 list_splice(&new_evsels, list);
639 return 0;
640 }
641
642 int parse_events_load_bpf_obj(struct parse_events_state *parse_state,
643 struct list_head *list,
644 struct bpf_object *obj,
645 struct list_head *head_config)
646 {
647 int err;
648 char errbuf[BUFSIZ];
649 struct __add_bpf_event_param param = {parse_state, list, head_config};
650 static bool registered_unprobe_atexit = false;
651
652 if (IS_ERR(obj) || !obj) {
653 snprintf(errbuf, sizeof(errbuf),
654 "Internal error: load bpf obj with NULL");
655 err = -EINVAL;
656 goto errout;
657 }
658
659 /*
660 * Register atexit handler before calling bpf__probe() so
661 * bpf__probe() don't need to unprobe probe points its already
662 * created when failure.
663 */
664 if (!registered_unprobe_atexit) {
665 atexit(bpf__clear);
666 registered_unprobe_atexit = true;
667 }
668
669 err = bpf__probe(obj);
670 if (err) {
671 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf));
672 goto errout;
673 }
674
675 err = bpf__load(obj);
676 if (err) {
677 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf));
678 goto errout;
679 }
680
681 err = bpf__foreach_event(obj, add_bpf_event, &param);
682 if (err) {
683 snprintf(errbuf, sizeof(errbuf),
684 "Attach events in BPF object failed");
685 goto errout;
686 }
687
688 return 0;
689 errout:
690 parse_state->error->help = strdup("(add -v to see detail)");
691 parse_state->error->str = strdup(errbuf);
692 return err;
693 }
694
695 static int
696 parse_events_config_bpf(struct parse_events_state *parse_state,
697 struct bpf_object *obj,
698 struct list_head *head_config)
699 {
700 struct parse_events_term *term;
701 int error_pos;
702
703 if (!head_config || list_empty(head_config))
704 return 0;
705
706 list_for_each_entry(term, head_config, list) {
707 char errbuf[BUFSIZ];
708 int err;
709
710 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) {
711 snprintf(errbuf, sizeof(errbuf),
712 "Invalid config term for BPF object");
713 errbuf[BUFSIZ - 1] = '\0';
714
715 parse_state->error->idx = term->err_term;
716 parse_state->error->str = strdup(errbuf);
717 return -EINVAL;
718 }
719
720 err = bpf__config_obj(obj, term, parse_state->evlist, &error_pos);
721 if (err) {
722 bpf__strerror_config_obj(obj, term, parse_state->evlist,
723 &error_pos, err, errbuf,
724 sizeof(errbuf));
725 parse_state->error->help = strdup(
726 "Hint:\tValid config terms:\n"
727 " \tmap:[<arraymap>].value<indices>=[value]\n"
728 " \tmap:[<eventmap>].event<indices>=[event]\n"
729 "\n"
730 " \twhere <indices> is something like [0,3...5] or [all]\n"
731 " \t(add -v to see detail)");
732 parse_state->error->str = strdup(errbuf);
733 if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
734 parse_state->error->idx = term->err_val;
735 else
736 parse_state->error->idx = term->err_term + error_pos;
737 return err;
738 }
739 }
740 return 0;
741 }
742
743 /*
744 * Split config terms:
745 * perf record -e bpf.c/call-graph=fp,map:array.value[0]=1/ ...
746 * 'call-graph=fp' is 'evt config', should be applied to each
747 * events in bpf.c.
748 * 'map:array.value[0]=1' is 'obj config', should be processed
749 * with parse_events_config_bpf.
750 *
751 * Move object config terms from the first list to obj_head_config.
752 */
753 static void
754 split_bpf_config_terms(struct list_head *evt_head_config,
755 struct list_head *obj_head_config)
756 {
757 struct parse_events_term *term, *temp;
758
759 /*
760 * Currectly, all possible user config term
761 * belong to bpf object. parse_events__is_hardcoded_term()
762 * happends to be a good flag.
763 *
764 * See parse_events_config_bpf() and
765 * config_term_tracepoint().
766 */
767 list_for_each_entry_safe(term, temp, evt_head_config, list)
768 if (!parse_events__is_hardcoded_term(term))
769 list_move_tail(&term->list, obj_head_config);
770 }
771
772 int parse_events_load_bpf(struct parse_events_state *parse_state,
773 struct list_head *list,
774 char *bpf_file_name,
775 bool source,
776 struct list_head *head_config)
777 {
778 int err;
779 struct bpf_object *obj;
780 LIST_HEAD(obj_head_config);
781
782 if (head_config)
783 split_bpf_config_terms(head_config, &obj_head_config);
784
785 obj = bpf__prepare_load(bpf_file_name, source);
786 if (IS_ERR(obj)) {
787 char errbuf[BUFSIZ];
788
789 err = PTR_ERR(obj);
790
791 if (err == -ENOTSUP)
792 snprintf(errbuf, sizeof(errbuf),
793 "BPF support is not compiled");
794 else
795 bpf__strerror_prepare_load(bpf_file_name,
796 source,
797 -err, errbuf,
798 sizeof(errbuf));
799
800 parse_state->error->help = strdup("(add -v to see detail)");
801 parse_state->error->str = strdup(errbuf);
802 return err;
803 }
804
805 err = parse_events_load_bpf_obj(parse_state, list, obj, head_config);
806 if (err)
807 return err;
808 err = parse_events_config_bpf(parse_state, obj, &obj_head_config);
809
810 /*
811 * Caller doesn't know anything about obj_head_config,
812 * so combine them together again before returnning.
813 */
814 if (head_config)
815 list_splice_tail(&obj_head_config, head_config);
816 return err;
817 }
818
819 static int
820 parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
821 {
822 int i;
823
824 for (i = 0; i < 3; i++) {
825 if (!type || !type[i])
826 break;
827
828 #define CHECK_SET_TYPE(bit) \
829 do { \
830 if (attr->bp_type & bit) \
831 return -EINVAL; \
832 else \
833 attr->bp_type |= bit; \
834 } while (0)
835
836 switch (type[i]) {
837 case 'r':
838 CHECK_SET_TYPE(HW_BREAKPOINT_R);
839 break;
840 case 'w':
841 CHECK_SET_TYPE(HW_BREAKPOINT_W);
842 break;
843 case 'x':
844 CHECK_SET_TYPE(HW_BREAKPOINT_X);
845 break;
846 default:
847 return -EINVAL;
848 }
849 }
850
851 #undef CHECK_SET_TYPE
852
853 if (!attr->bp_type) /* Default */
854 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
855
856 return 0;
857 }
858
859 int parse_events_add_breakpoint(struct list_head *list, int *idx,
860 void *ptr, char *type, u64 len)
861 {
862 struct perf_event_attr attr;
863
864 memset(&attr, 0, sizeof(attr));
865 attr.bp_addr = (unsigned long) ptr;
866
867 if (parse_breakpoint_type(type, &attr))
868 return -EINVAL;
869
870 /* Provide some defaults if len is not specified */
871 if (!len) {
872 if (attr.bp_type == HW_BREAKPOINT_X)
873 len = sizeof(long);
874 else
875 len = HW_BREAKPOINT_LEN_4;
876 }
877
878 attr.bp_len = len;
879
880 attr.type = PERF_TYPE_BREAKPOINT;
881 attr.sample_period = 1;
882
883 return add_event(list, idx, &attr, NULL, NULL);
884 }
885
886 static int check_type_val(struct parse_events_term *term,
887 struct parse_events_error *err,
888 int type)
889 {
890 if (type == term->type_val)
891 return 0;
892
893 if (err) {
894 err->idx = term->err_val;
895 if (type == PARSE_EVENTS__TERM_TYPE_NUM)
896 err->str = strdup("expected numeric value");
897 else
898 err->str = strdup("expected string value");
899 }
900 return -EINVAL;
901 }
902
903 /*
904 * Update according to parse-events.l
905 */
906 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
907 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>",
908 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config",
909 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1",
910 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2",
911 [PARSE_EVENTS__TERM_TYPE_NAME] = "name",
912 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period",
913 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq",
914 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type",
915 [PARSE_EVENTS__TERM_TYPE_TIME] = "time",
916 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph",
917 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size",
918 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit",
919 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit",
920 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack",
921 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite",
922 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",
923 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config",
924 };
925
926 static bool config_term_shrinked;
927
928 static bool
929 config_term_avail(int term_type, struct parse_events_error *err)
930 {
931 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
932 err->str = strdup("Invalid term_type");
933 return false;
934 }
935 if (!config_term_shrinked)
936 return true;
937
938 switch (term_type) {
939 case PARSE_EVENTS__TERM_TYPE_CONFIG:
940 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
941 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
942 case PARSE_EVENTS__TERM_TYPE_NAME:
943 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
944 return true;
945 default:
946 if (!err)
947 return false;
948
949 /* term_type is validated so indexing is safe */
950 if (asprintf(&err->str, "'%s' is not usable in 'perf stat'",
951 config_term_names[term_type]) < 0)
952 err->str = NULL;
953 return false;
954 }
955 }
956
957 void parse_events__shrink_config_terms(void)
958 {
959 config_term_shrinked = true;
960 }
961
962 static int config_term_common(struct perf_event_attr *attr,
963 struct parse_events_term *term,
964 struct parse_events_error *err)
965 {
966 #define CHECK_TYPE_VAL(type) \
967 do { \
968 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
969 return -EINVAL; \
970 } while (0)
971
972 switch (term->type_term) {
973 case PARSE_EVENTS__TERM_TYPE_CONFIG:
974 CHECK_TYPE_VAL(NUM);
975 attr->config = term->val.num;
976 break;
977 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
978 CHECK_TYPE_VAL(NUM);
979 attr->config1 = term->val.num;
980 break;
981 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
982 CHECK_TYPE_VAL(NUM);
983 attr->config2 = term->val.num;
984 break;
985 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
986 CHECK_TYPE_VAL(NUM);
987 break;
988 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
989 CHECK_TYPE_VAL(NUM);
990 break;
991 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
992 CHECK_TYPE_VAL(STR);
993 if (strcmp(term->val.str, "no") &&
994 parse_branch_str(term->val.str, &attr->branch_sample_type)) {
995 err->str = strdup("invalid branch sample type");
996 err->idx = term->err_val;
997 return -EINVAL;
998 }
999 break;
1000 case PARSE_EVENTS__TERM_TYPE_TIME:
1001 CHECK_TYPE_VAL(NUM);
1002 if (term->val.num > 1) {
1003 err->str = strdup("expected 0 or 1");
1004 err->idx = term->err_val;
1005 return -EINVAL;
1006 }
1007 break;
1008 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1009 CHECK_TYPE_VAL(STR);
1010 break;
1011 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1012 CHECK_TYPE_VAL(NUM);
1013 break;
1014 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1015 CHECK_TYPE_VAL(NUM);
1016 break;
1017 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1018 CHECK_TYPE_VAL(NUM);
1019 break;
1020 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1021 CHECK_TYPE_VAL(NUM);
1022 break;
1023 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1024 CHECK_TYPE_VAL(NUM);
1025 break;
1026 case PARSE_EVENTS__TERM_TYPE_NAME:
1027 CHECK_TYPE_VAL(STR);
1028 break;
1029 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1030 CHECK_TYPE_VAL(NUM);
1031 break;
1032 default:
1033 err->str = strdup("unknown term");
1034 err->idx = term->err_term;
1035 err->help = parse_events_formats_error_string(NULL);
1036 return -EINVAL;
1037 }
1038
1039 /*
1040 * Check term availbility after basic checking so
1041 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.
1042 *
1043 * If check availbility at the entry of this function,
1044 * user will see "'<sysfs term>' is not usable in 'perf stat'"
1045 * if an invalid config term is provided for legacy events
1046 * (for example, instructions/badterm/...), which is confusing.
1047 */
1048 if (!config_term_avail(term->type_term, err))
1049 return -EINVAL;
1050 return 0;
1051 #undef CHECK_TYPE_VAL
1052 }
1053
1054 static int config_term_pmu(struct perf_event_attr *attr,
1055 struct parse_events_term *term,
1056 struct parse_events_error *err)
1057 {
1058 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1059 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG)
1060 /*
1061 * Always succeed for sysfs terms, as we dont know
1062 * at this point what type they need to have.
1063 */
1064 return 0;
1065 else
1066 return config_term_common(attr, term, err);
1067 }
1068
1069 static int config_term_tracepoint(struct perf_event_attr *attr,
1070 struct parse_events_term *term,
1071 struct parse_events_error *err)
1072 {
1073 switch (term->type_term) {
1074 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1075 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1076 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1077 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1078 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1079 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1080 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1081 return config_term_common(attr, term, err);
1082 default:
1083 if (err) {
1084 err->idx = term->err_term;
1085 err->str = strdup("unknown term");
1086 err->help = strdup("valid terms: call-graph,stack-size\n");
1087 }
1088 return -EINVAL;
1089 }
1090
1091 return 0;
1092 }
1093
1094 static int config_attr(struct perf_event_attr *attr,
1095 struct list_head *head,
1096 struct parse_events_error *err,
1097 config_term_func_t config_term)
1098 {
1099 struct parse_events_term *term;
1100
1101 list_for_each_entry(term, head, list)
1102 if (config_term(attr, term, err))
1103 return -EINVAL;
1104
1105 return 0;
1106 }
1107
1108 static int get_config_terms(struct list_head *head_config,
1109 struct list_head *head_terms __maybe_unused)
1110 {
1111 #define ADD_CONFIG_TERM(__type, __name, __val) \
1112 do { \
1113 struct perf_evsel_config_term *__t; \
1114 \
1115 __t = zalloc(sizeof(*__t)); \
1116 if (!__t) \
1117 return -ENOMEM; \
1118 \
1119 INIT_LIST_HEAD(&__t->list); \
1120 __t->type = PERF_EVSEL__CONFIG_TERM_ ## __type; \
1121 __t->val.__name = __val; \
1122 __t->weak = term->weak; \
1123 list_add_tail(&__t->list, head_terms); \
1124 } while (0)
1125
1126 struct parse_events_term *term;
1127
1128 list_for_each_entry(term, head_config, list) {
1129 switch (term->type_term) {
1130 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1131 ADD_CONFIG_TERM(PERIOD, period, term->val.num);
1132 break;
1133 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1134 ADD_CONFIG_TERM(FREQ, freq, term->val.num);
1135 break;
1136 case PARSE_EVENTS__TERM_TYPE_TIME:
1137 ADD_CONFIG_TERM(TIME, time, term->val.num);
1138 break;
1139 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1140 ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str);
1141 break;
1142 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1143 ADD_CONFIG_TERM(BRANCH, branch, term->val.str);
1144 break;
1145 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1146 ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num);
1147 break;
1148 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1149 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 1 : 0);
1150 break;
1151 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1152 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
1153 break;
1154 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1155 ADD_CONFIG_TERM(MAX_STACK, max_stack, term->val.num);
1156 break;
1157 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1158 ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 1 : 0);
1159 break;
1160 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1161 ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 0 : 1);
1162 break;
1163 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1164 ADD_CONFIG_TERM(DRV_CFG, drv_cfg, term->val.str);
1165 break;
1166 default:
1167 break;
1168 }
1169 }
1170 #undef ADD_EVSEL_CONFIG
1171 return 0;
1172 }
1173
1174 int parse_events_add_tracepoint(struct list_head *list, int *idx,
1175 const char *sys, const char *event,
1176 struct parse_events_error *err,
1177 struct list_head *head_config)
1178 {
1179 if (head_config) {
1180 struct perf_event_attr attr;
1181
1182 if (config_attr(&attr, head_config, err,
1183 config_term_tracepoint))
1184 return -EINVAL;
1185 }
1186
1187 if (strpbrk(sys, "*?"))
1188 return add_tracepoint_multi_sys(list, idx, sys, event,
1189 err, head_config);
1190 else
1191 return add_tracepoint_event(list, idx, sys, event,
1192 err, head_config);
1193 }
1194
1195 int parse_events_add_numeric(struct parse_events_state *parse_state,
1196 struct list_head *list,
1197 u32 type, u64 config,
1198 struct list_head *head_config)
1199 {
1200 struct perf_event_attr attr;
1201 LIST_HEAD(config_terms);
1202
1203 memset(&attr, 0, sizeof(attr));
1204 attr.type = type;
1205 attr.config = config;
1206
1207 if (head_config) {
1208 if (config_attr(&attr, head_config, parse_state->error,
1209 config_term_common))
1210 return -EINVAL;
1211
1212 if (get_config_terms(head_config, &config_terms))
1213 return -ENOMEM;
1214 }
1215
1216 return add_event(list, &parse_state->idx, &attr,
1217 get_config_name(head_config), &config_terms);
1218 }
1219
1220 static int __parse_events_add_pmu(struct parse_events_state *parse_state,
1221 struct list_head *list, char *name,
1222 struct list_head *head_config, bool auto_merge_stats)
1223 {
1224 struct perf_event_attr attr;
1225 struct perf_pmu_info info;
1226 struct perf_pmu *pmu;
1227 struct perf_evsel *evsel;
1228 struct parse_events_error *err = parse_state->error;
1229 LIST_HEAD(config_terms);
1230
1231 pmu = perf_pmu__find(name);
1232 if (!pmu) {
1233 if (asprintf(&err->str,
1234 "Cannot find PMU `%s'. Missing kernel support?",
1235 name) < 0)
1236 err->str = NULL;
1237 return -EINVAL;
1238 }
1239
1240 if (pmu->default_config) {
1241 memcpy(&attr, pmu->default_config,
1242 sizeof(struct perf_event_attr));
1243 } else {
1244 memset(&attr, 0, sizeof(attr));
1245 }
1246
1247 if (!head_config) {
1248 attr.type = pmu->type;
1249 evsel = __add_event(list, &parse_state->idx, &attr, NULL, pmu, NULL, auto_merge_stats);
1250 return evsel ? 0 : -ENOMEM;
1251 }
1252
1253 if (perf_pmu__check_alias(pmu, head_config, &info))
1254 return -EINVAL;
1255
1256 /*
1257 * Configure hardcoded terms first, no need to check
1258 * return value when called with fail == 0 ;)
1259 */
1260 if (config_attr(&attr, head_config, parse_state->error, config_term_pmu))
1261 return -EINVAL;
1262
1263 if (get_config_terms(head_config, &config_terms))
1264 return -ENOMEM;
1265
1266 if (perf_pmu__config(pmu, &attr, head_config, parse_state->error))
1267 return -EINVAL;
1268
1269 evsel = __add_event(list, &parse_state->idx, &attr,
1270 get_config_name(head_config), pmu,
1271 &config_terms, auto_merge_stats);
1272 if (evsel) {
1273 evsel->unit = info.unit;
1274 evsel->scale = info.scale;
1275 evsel->per_pkg = info.per_pkg;
1276 evsel->snapshot = info.snapshot;
1277 evsel->metric_expr = info.metric_expr;
1278 evsel->metric_name = info.metric_name;
1279 }
1280
1281 return evsel ? 0 : -ENOMEM;
1282 }
1283
1284 int parse_events_add_pmu(struct parse_events_state *parse_state,
1285 struct list_head *list, char *name,
1286 struct list_head *head_config)
1287 {
1288 return __parse_events_add_pmu(parse_state, list, name, head_config, false);
1289 }
1290
1291 int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
1292 char *str, struct list_head **listp)
1293 {
1294 struct list_head *head;
1295 struct parse_events_term *term;
1296 struct list_head *list;
1297 struct perf_pmu *pmu = NULL;
1298 int ok = 0;
1299
1300 *listp = NULL;
1301 /* Add it for all PMUs that support the alias */
1302 list = malloc(sizeof(struct list_head));
1303 if (!list)
1304 return -1;
1305 INIT_LIST_HEAD(list);
1306 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1307 struct perf_pmu_alias *alias;
1308
1309 list_for_each_entry(alias, &pmu->aliases, list) {
1310 if (!strcasecmp(alias->name, str)) {
1311 head = malloc(sizeof(struct list_head));
1312 if (!head)
1313 return -1;
1314 INIT_LIST_HEAD(head);
1315 if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
1316 str, 1, false, &str, NULL) < 0)
1317 return -1;
1318 list_add_tail(&term->list, head);
1319
1320 if (!__parse_events_add_pmu(parse_state, list,
1321 pmu->name, head, true)) {
1322 pr_debug("%s -> %s/%s/\n", str,
1323 pmu->name, alias->str);
1324 ok++;
1325 }
1326
1327 parse_events_terms__delete(head);
1328 }
1329 }
1330 }
1331 if (!ok)
1332 return -1;
1333 *listp = list;
1334 return 0;
1335 }
1336
1337 int parse_events__modifier_group(struct list_head *list,
1338 char *event_mod)
1339 {
1340 return parse_events__modifier_event(list, event_mod, true);
1341 }
1342
1343 void parse_events__set_leader(char *name, struct list_head *list)
1344 {
1345 struct perf_evsel *leader;
1346
1347 if (list_empty(list)) {
1348 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1349 return;
1350 }
1351
1352 __perf_evlist__set_leader(list);
1353 leader = list_entry(list->next, struct perf_evsel, node);
1354 leader->group_name = name ? strdup(name) : NULL;
1355 }
1356
1357 /* list_event is assumed to point to malloc'ed memory */
1358 void parse_events_update_lists(struct list_head *list_event,
1359 struct list_head *list_all)
1360 {
1361 /*
1362 * Called for single event definition. Update the
1363 * 'all event' list, and reinit the 'single event'
1364 * list, for next event definition.
1365 */
1366 list_splice_tail(list_event, list_all);
1367 free(list_event);
1368 }
1369
1370 struct event_modifier {
1371 int eu;
1372 int ek;
1373 int eh;
1374 int eH;
1375 int eG;
1376 int eI;
1377 int precise;
1378 int precise_max;
1379 int exclude_GH;
1380 int sample_read;
1381 int pinned;
1382 int weak;
1383 };
1384
1385 static int get_event_modifier(struct event_modifier *mod, char *str,
1386 struct perf_evsel *evsel)
1387 {
1388 int eu = evsel ? evsel->attr.exclude_user : 0;
1389 int ek = evsel ? evsel->attr.exclude_kernel : 0;
1390 int eh = evsel ? evsel->attr.exclude_hv : 0;
1391 int eH = evsel ? evsel->attr.exclude_host : 0;
1392 int eG = evsel ? evsel->attr.exclude_guest : 0;
1393 int eI = evsel ? evsel->attr.exclude_idle : 0;
1394 int precise = evsel ? evsel->attr.precise_ip : 0;
1395 int precise_max = 0;
1396 int sample_read = 0;
1397 int pinned = evsel ? evsel->attr.pinned : 0;
1398
1399 int exclude = eu | ek | eh;
1400 int exclude_GH = evsel ? evsel->exclude_GH : 0;
1401 int weak = 0;
1402
1403 memset(mod, 0, sizeof(*mod));
1404
1405 while (*str) {
1406 if (*str == 'u') {
1407 if (!exclude)
1408 exclude = eu = ek = eh = 1;
1409 eu = 0;
1410 } else if (*str == 'k') {
1411 if (!exclude)
1412 exclude = eu = ek = eh = 1;
1413 ek = 0;
1414 } else if (*str == 'h') {
1415 if (!exclude)
1416 exclude = eu = ek = eh = 1;
1417 eh = 0;
1418 } else if (*str == 'G') {
1419 if (!exclude_GH)
1420 exclude_GH = eG = eH = 1;
1421 eG = 0;
1422 } else if (*str == 'H') {
1423 if (!exclude_GH)
1424 exclude_GH = eG = eH = 1;
1425 eH = 0;
1426 } else if (*str == 'I') {
1427 eI = 1;
1428 } else if (*str == 'p') {
1429 precise++;
1430 /* use of precise requires exclude_guest */
1431 if (!exclude_GH)
1432 eG = 1;
1433 } else if (*str == 'P') {
1434 precise_max = 1;
1435 } else if (*str == 'S') {
1436 sample_read = 1;
1437 } else if (*str == 'D') {
1438 pinned = 1;
1439 } else if (*str == 'W') {
1440 weak = 1;
1441 } else
1442 break;
1443
1444 ++str;
1445 }
1446
1447 /*
1448 * precise ip:
1449 *
1450 * 0 - SAMPLE_IP can have arbitrary skid
1451 * 1 - SAMPLE_IP must have constant skid
1452 * 2 - SAMPLE_IP requested to have 0 skid
1453 * 3 - SAMPLE_IP must have 0 skid
1454 *
1455 * See also PERF_RECORD_MISC_EXACT_IP
1456 */
1457 if (precise > 3)
1458 return -EINVAL;
1459
1460 mod->eu = eu;
1461 mod->ek = ek;
1462 mod->eh = eh;
1463 mod->eH = eH;
1464 mod->eG = eG;
1465 mod->eI = eI;
1466 mod->precise = precise;
1467 mod->precise_max = precise_max;
1468 mod->exclude_GH = exclude_GH;
1469 mod->sample_read = sample_read;
1470 mod->pinned = pinned;
1471 mod->weak = weak;
1472
1473 return 0;
1474 }
1475
1476 /*
1477 * Basic modifier sanity check to validate it contains only one
1478 * instance of any modifier (apart from 'p') present.
1479 */
1480 static int check_modifier(char *str)
1481 {
1482 char *p = str;
1483
1484 /* The sizeof includes 0 byte as well. */
1485 if (strlen(str) > (sizeof("ukhGHpppPSDIW") - 1))
1486 return -1;
1487
1488 while (*p) {
1489 if (*p != 'p' && strchr(p + 1, *p))
1490 return -1;
1491 p++;
1492 }
1493
1494 return 0;
1495 }
1496
1497 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1498 {
1499 struct perf_evsel *evsel;
1500 struct event_modifier mod;
1501
1502 if (str == NULL)
1503 return 0;
1504
1505 if (check_modifier(str))
1506 return -EINVAL;
1507
1508 if (!add && get_event_modifier(&mod, str, NULL))
1509 return -EINVAL;
1510
1511 __evlist__for_each_entry(list, evsel) {
1512 if (add && get_event_modifier(&mod, str, evsel))
1513 return -EINVAL;
1514
1515 evsel->attr.exclude_user = mod.eu;
1516 evsel->attr.exclude_kernel = mod.ek;
1517 evsel->attr.exclude_hv = mod.eh;
1518 evsel->attr.precise_ip = mod.precise;
1519 evsel->attr.exclude_host = mod.eH;
1520 evsel->attr.exclude_guest = mod.eG;
1521 evsel->attr.exclude_idle = mod.eI;
1522 evsel->exclude_GH = mod.exclude_GH;
1523 evsel->sample_read = mod.sample_read;
1524 evsel->precise_max = mod.precise_max;
1525 evsel->weak_group = mod.weak;
1526
1527 if (perf_evsel__is_group_leader(evsel))
1528 evsel->attr.pinned = mod.pinned;
1529 }
1530
1531 return 0;
1532 }
1533
1534 int parse_events_name(struct list_head *list, char *name)
1535 {
1536 struct perf_evsel *evsel;
1537
1538 __evlist__for_each_entry(list, evsel) {
1539 if (!evsel->name)
1540 evsel->name = strdup(name);
1541 }
1542
1543 return 0;
1544 }
1545
1546 static int
1547 comp_pmu(const void *p1, const void *p2)
1548 {
1549 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
1550 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
1551
1552 return strcasecmp(pmu1->symbol, pmu2->symbol);
1553 }
1554
1555 static void perf_pmu__parse_cleanup(void)
1556 {
1557 if (perf_pmu_events_list_num > 0) {
1558 struct perf_pmu_event_symbol *p;
1559 int i;
1560
1561 for (i = 0; i < perf_pmu_events_list_num; i++) {
1562 p = perf_pmu_events_list + i;
1563 zfree(&p->symbol);
1564 }
1565 zfree(&perf_pmu_events_list);
1566 perf_pmu_events_list_num = 0;
1567 }
1568 }
1569
1570 #define SET_SYMBOL(str, stype) \
1571 do { \
1572 p->symbol = str; \
1573 if (!p->symbol) \
1574 goto err; \
1575 p->type = stype; \
1576 } while (0)
1577
1578 /*
1579 * Read the pmu events list from sysfs
1580 * Save it into perf_pmu_events_list
1581 */
1582 static void perf_pmu__parse_init(void)
1583 {
1584
1585 struct perf_pmu *pmu = NULL;
1586 struct perf_pmu_alias *alias;
1587 int len = 0;
1588
1589 pmu = NULL;
1590 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1591 list_for_each_entry(alias, &pmu->aliases, list) {
1592 if (strchr(alias->name, '-'))
1593 len++;
1594 len++;
1595 }
1596 }
1597
1598 if (len == 0) {
1599 perf_pmu_events_list_num = -1;
1600 return;
1601 }
1602 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
1603 if (!perf_pmu_events_list)
1604 return;
1605 perf_pmu_events_list_num = len;
1606
1607 len = 0;
1608 pmu = NULL;
1609 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1610 list_for_each_entry(alias, &pmu->aliases, list) {
1611 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
1612 char *tmp = strchr(alias->name, '-');
1613
1614 if (tmp != NULL) {
1615 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
1616 PMU_EVENT_SYMBOL_PREFIX);
1617 p++;
1618 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
1619 len += 2;
1620 } else {
1621 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
1622 len++;
1623 }
1624 }
1625 }
1626 qsort(perf_pmu_events_list, len,
1627 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1628
1629 return;
1630 err:
1631 perf_pmu__parse_cleanup();
1632 }
1633
1634 enum perf_pmu_event_symbol_type
1635 perf_pmu__parse_check(const char *name)
1636 {
1637 struct perf_pmu_event_symbol p, *r;
1638
1639 /* scan kernel pmu events from sysfs if needed */
1640 if (perf_pmu_events_list_num == 0)
1641 perf_pmu__parse_init();
1642 /*
1643 * name "cpu" could be prefix of cpu-cycles or cpu// events.
1644 * cpu-cycles has been handled by hardcode.
1645 * So it must be cpu// events, not kernel pmu event.
1646 */
1647 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
1648 return PMU_EVENT_SYMBOL_ERR;
1649
1650 p.symbol = strdup(name);
1651 r = bsearch(&p, perf_pmu_events_list,
1652 (size_t) perf_pmu_events_list_num,
1653 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1654 zfree(&p.symbol);
1655 return r ? r->type : PMU_EVENT_SYMBOL_ERR;
1656 }
1657
1658 static int parse_events__scanner(const char *str, void *parse_state, int start_token)
1659 {
1660 YY_BUFFER_STATE buffer;
1661 void *scanner;
1662 int ret;
1663
1664 ret = parse_events_lex_init_extra(start_token, &scanner);
1665 if (ret)
1666 return ret;
1667
1668 buffer = parse_events__scan_string(str, scanner);
1669
1670 #ifdef PARSER_DEBUG
1671 parse_events_debug = 1;
1672 #endif
1673 ret = parse_events_parse(parse_state, scanner);
1674
1675 parse_events__flush_buffer(buffer, scanner);
1676 parse_events__delete_buffer(buffer, scanner);
1677 parse_events_lex_destroy(scanner);
1678 return ret;
1679 }
1680
1681 /*
1682 * parse event config string, return a list of event terms.
1683 */
1684 int parse_events_terms(struct list_head *terms, const char *str)
1685 {
1686 struct parse_events_state parse_state = {
1687 .terms = NULL,
1688 };
1689 int ret;
1690
1691 ret = parse_events__scanner(str, &parse_state, PE_START_TERMS);
1692 if (!ret) {
1693 list_splice(parse_state.terms, terms);
1694 zfree(&parse_state.terms);
1695 return 0;
1696 }
1697
1698 parse_events_terms__delete(parse_state.terms);
1699 return ret;
1700 }
1701
1702 int parse_events(struct perf_evlist *evlist, const char *str,
1703 struct parse_events_error *err)
1704 {
1705 struct parse_events_state parse_state = {
1706 .list = LIST_HEAD_INIT(parse_state.list),
1707 .idx = evlist->nr_entries,
1708 .error = err,
1709 .evlist = evlist,
1710 };
1711 int ret;
1712
1713 ret = parse_events__scanner(str, &parse_state, PE_START_EVENTS);
1714 perf_pmu__parse_cleanup();
1715 if (!ret) {
1716 struct perf_evsel *last;
1717
1718 if (list_empty(&parse_state.list)) {
1719 WARN_ONCE(true, "WARNING: event parser found nothing");
1720 return -1;
1721 }
1722
1723 perf_evlist__splice_list_tail(evlist, &parse_state.list);
1724 evlist->nr_groups += parse_state.nr_groups;
1725 last = perf_evlist__last(evlist);
1726 last->cmdline_group_boundary = true;
1727
1728 return 0;
1729 }
1730
1731 /*
1732 * There are 2 users - builtin-record and builtin-test objects.
1733 * Both call perf_evlist__delete in case of error, so we dont
1734 * need to bother.
1735 */
1736 return ret;
1737 }
1738
1739 #define MAX_WIDTH 1000
1740 static int get_term_width(void)
1741 {
1742 struct winsize ws;
1743
1744 get_term_dimensions(&ws);
1745 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
1746 }
1747
1748 void parse_events_print_error(struct parse_events_error *err,
1749 const char *event)
1750 {
1751 const char *str = "invalid or unsupported event: ";
1752 char _buf[MAX_WIDTH];
1753 char *buf = (char *) event;
1754 int idx = 0;
1755
1756 if (err->str) {
1757 /* -2 for extra '' in the final fprintf */
1758 int width = get_term_width() - 2;
1759 int len_event = strlen(event);
1760 int len_str, max_len, cut = 0;
1761
1762 /*
1763 * Maximum error index indent, we will cut
1764 * the event string if it's bigger.
1765 */
1766 int max_err_idx = 13;
1767
1768 /*
1769 * Let's be specific with the message when
1770 * we have the precise error.
1771 */
1772 str = "event syntax error: ";
1773 len_str = strlen(str);
1774 max_len = width - len_str;
1775
1776 buf = _buf;
1777
1778 /* We're cutting from the beginning. */
1779 if (err->idx > max_err_idx)
1780 cut = err->idx - max_err_idx;
1781
1782 strncpy(buf, event + cut, max_len);
1783
1784 /* Mark cut parts with '..' on both sides. */
1785 if (cut)
1786 buf[0] = buf[1] = '.';
1787
1788 if ((len_event - cut) > max_len) {
1789 buf[max_len - 1] = buf[max_len - 2] = '.';
1790 buf[max_len] = 0;
1791 }
1792
1793 idx = len_str + err->idx - cut;
1794 }
1795
1796 fprintf(stderr, "%s'%s'\n", str, buf);
1797 if (idx) {
1798 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err->str);
1799 if (err->help)
1800 fprintf(stderr, "\n%s\n", err->help);
1801 zfree(&err->str);
1802 zfree(&err->help);
1803 }
1804 }
1805
1806 #undef MAX_WIDTH
1807
1808 int parse_events_option(const struct option *opt, const char *str,
1809 int unset __maybe_unused)
1810 {
1811 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1812 struct parse_events_error err = { .idx = 0, };
1813 int ret = parse_events(evlist, str, &err);
1814
1815 if (ret) {
1816 parse_events_print_error(&err, str);
1817 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
1818 }
1819
1820 return ret;
1821 }
1822
1823 static int
1824 foreach_evsel_in_last_glob(struct perf_evlist *evlist,
1825 int (*func)(struct perf_evsel *evsel,
1826 const void *arg),
1827 const void *arg)
1828 {
1829 struct perf_evsel *last = NULL;
1830 int err;
1831
1832 /*
1833 * Don't return when list_empty, give func a chance to report
1834 * error when it found last == NULL.
1835 *
1836 * So no need to WARN here, let *func do this.
1837 */
1838 if (evlist->nr_entries > 0)
1839 last = perf_evlist__last(evlist);
1840
1841 do {
1842 err = (*func)(last, arg);
1843 if (err)
1844 return -1;
1845 if (!last)
1846 return 0;
1847
1848 if (last->node.prev == &evlist->entries)
1849 return 0;
1850 last = list_entry(last->node.prev, struct perf_evsel, node);
1851 } while (!last->cmdline_group_boundary);
1852
1853 return 0;
1854 }
1855
1856 static int set_filter(struct perf_evsel *evsel, const void *arg)
1857 {
1858 const char *str = arg;
1859 bool found = false;
1860 int nr_addr_filters = 0;
1861 struct perf_pmu *pmu = NULL;
1862
1863 if (evsel == NULL)
1864 goto err;
1865
1866 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) {
1867 if (perf_evsel__append_tp_filter(evsel, str) < 0) {
1868 fprintf(stderr,
1869 "not enough memory to hold filter string\n");
1870 return -1;
1871 }
1872
1873 return 0;
1874 }
1875
1876 while ((pmu = perf_pmu__scan(pmu)) != NULL)
1877 if (pmu->type == evsel->attr.type) {
1878 found = true;
1879 break;
1880 }
1881
1882 if (found)
1883 perf_pmu__scan_file(pmu, "nr_addr_filters",
1884 "%d", &nr_addr_filters);
1885
1886 if (!nr_addr_filters)
1887 goto err;
1888
1889 if (perf_evsel__append_addr_filter(evsel, str) < 0) {
1890 fprintf(stderr,
1891 "not enough memory to hold filter string\n");
1892 return -1;
1893 }
1894
1895 return 0;
1896
1897 err:
1898 fprintf(stderr,
1899 "--filter option should follow a -e tracepoint or HW tracer option\n");
1900
1901 return -1;
1902 }
1903
1904 int parse_filter(const struct option *opt, const char *str,
1905 int unset __maybe_unused)
1906 {
1907 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1908
1909 return foreach_evsel_in_last_glob(evlist, set_filter,
1910 (const void *)str);
1911 }
1912
1913 static int add_exclude_perf_filter(struct perf_evsel *evsel,
1914 const void *arg __maybe_unused)
1915 {
1916 char new_filter[64];
1917
1918 if (evsel == NULL || evsel->attr.type != PERF_TYPE_TRACEPOINT) {
1919 fprintf(stderr,
1920 "--exclude-perf option should follow a -e tracepoint option\n");
1921 return -1;
1922 }
1923
1924 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
1925
1926 if (perf_evsel__append_tp_filter(evsel, new_filter) < 0) {
1927 fprintf(stderr,
1928 "not enough memory to hold filter string\n");
1929 return -1;
1930 }
1931
1932 return 0;
1933 }
1934
1935 int exclude_perf(const struct option *opt,
1936 const char *arg __maybe_unused,
1937 int unset __maybe_unused)
1938 {
1939 struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
1940
1941 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
1942 NULL);
1943 }
1944
1945 static const char * const event_type_descriptors[] = {
1946 "Hardware event",
1947 "Software event",
1948 "Tracepoint event",
1949 "Hardware cache event",
1950 "Raw hardware event descriptor",
1951 "Hardware breakpoint",
1952 };
1953
1954 static int cmp_string(const void *a, const void *b)
1955 {
1956 const char * const *as = a;
1957 const char * const *bs = b;
1958
1959 return strcmp(*as, *bs);
1960 }
1961
1962 /*
1963 * Print the events from <debugfs_mount_point>/tracing/events
1964 */
1965
1966 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
1967 bool name_only)
1968 {
1969 DIR *sys_dir, *evt_dir;
1970 struct dirent *sys_dirent, *evt_dirent;
1971 char evt_path[MAXPATHLEN];
1972 char dir_path[MAXPATHLEN];
1973 char **evt_list = NULL;
1974 unsigned int evt_i = 0, evt_num = 0;
1975 bool evt_num_known = false;
1976
1977 restart:
1978 sys_dir = opendir(tracing_events_path);
1979 if (!sys_dir)
1980 return;
1981
1982 if (evt_num_known) {
1983 evt_list = zalloc(sizeof(char *) * evt_num);
1984 if (!evt_list)
1985 goto out_close_sys_dir;
1986 }
1987
1988 for_each_subsystem(sys_dir, sys_dirent) {
1989 if (subsys_glob != NULL &&
1990 !strglobmatch(sys_dirent->d_name, subsys_glob))
1991 continue;
1992
1993 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
1994 sys_dirent->d_name);
1995 evt_dir = opendir(dir_path);
1996 if (!evt_dir)
1997 continue;
1998
1999 for_each_event(sys_dirent, evt_dir, evt_dirent) {
2000 if (event_glob != NULL &&
2001 !strglobmatch(evt_dirent->d_name, event_glob))
2002 continue;
2003
2004 if (!evt_num_known) {
2005 evt_num++;
2006 continue;
2007 }
2008
2009 snprintf(evt_path, MAXPATHLEN, "%s:%s",
2010 sys_dirent->d_name, evt_dirent->d_name);
2011
2012 evt_list[evt_i] = strdup(evt_path);
2013 if (evt_list[evt_i] == NULL)
2014 goto out_close_evt_dir;
2015 evt_i++;
2016 }
2017 closedir(evt_dir);
2018 }
2019 closedir(sys_dir);
2020
2021 if (!evt_num_known) {
2022 evt_num_known = true;
2023 goto restart;
2024 }
2025 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2026 evt_i = 0;
2027 while (evt_i < evt_num) {
2028 if (name_only) {
2029 printf("%s ", evt_list[evt_i++]);
2030 continue;
2031 }
2032 printf(" %-50s [%s]\n", evt_list[evt_i++],
2033 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
2034 }
2035 if (evt_num && pager_in_use())
2036 printf("\n");
2037
2038 out_free:
2039 evt_num = evt_i;
2040 for (evt_i = 0; evt_i < evt_num; evt_i++)
2041 zfree(&evt_list[evt_i]);
2042 zfree(&evt_list);
2043 return;
2044
2045 out_close_evt_dir:
2046 closedir(evt_dir);
2047 out_close_sys_dir:
2048 closedir(sys_dir);
2049
2050 printf("FATAL: not enough memory to print %s\n",
2051 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
2052 if (evt_list)
2053 goto out_free;
2054 }
2055
2056 /*
2057 * Check whether event is in <debugfs_mount_point>/tracing/events
2058 */
2059
2060 int is_valid_tracepoint(const char *event_string)
2061 {
2062 DIR *sys_dir, *evt_dir;
2063 struct dirent *sys_dirent, *evt_dirent;
2064 char evt_path[MAXPATHLEN];
2065 char dir_path[MAXPATHLEN];
2066
2067 sys_dir = opendir(tracing_events_path);
2068 if (!sys_dir)
2069 return 0;
2070
2071 for_each_subsystem(sys_dir, sys_dirent) {
2072
2073 snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
2074 sys_dirent->d_name);
2075 evt_dir = opendir(dir_path);
2076 if (!evt_dir)
2077 continue;
2078
2079 for_each_event(sys_dirent, evt_dir, evt_dirent) {
2080 snprintf(evt_path, MAXPATHLEN, "%s:%s",
2081 sys_dirent->d_name, evt_dirent->d_name);
2082 if (!strcmp(evt_path, event_string)) {
2083 closedir(evt_dir);
2084 closedir(sys_dir);
2085 return 1;
2086 }
2087 }
2088 closedir(evt_dir);
2089 }
2090 closedir(sys_dir);
2091 return 0;
2092 }
2093
2094 static bool is_event_supported(u8 type, unsigned config)
2095 {
2096 bool ret = true;
2097 int open_return;
2098 struct perf_evsel *evsel;
2099 struct perf_event_attr attr = {
2100 .type = type,
2101 .config = config,
2102 .disabled = 1,
2103 };
2104 struct thread_map *tmap = thread_map__new_by_tid(0);
2105
2106 if (tmap == NULL)
2107 return false;
2108
2109 evsel = perf_evsel__new(&attr);
2110 if (evsel) {
2111 open_return = perf_evsel__open(evsel, NULL, tmap);
2112 ret = open_return >= 0;
2113
2114 if (open_return == -EACCES) {
2115 /*
2116 * This happens if the paranoid value
2117 * /proc/sys/kernel/perf_event_paranoid is set to 2
2118 * Re-run with exclude_kernel set; we don't do that
2119 * by default as some ARM machines do not support it.
2120 *
2121 */
2122 evsel->attr.exclude_kernel = 1;
2123 ret = perf_evsel__open(evsel, NULL, tmap) >= 0;
2124 }
2125 perf_evsel__delete(evsel);
2126 }
2127
2128 return ret;
2129 }
2130
2131 void print_sdt_events(const char *subsys_glob, const char *event_glob,
2132 bool name_only)
2133 {
2134 struct probe_cache *pcache;
2135 struct probe_cache_entry *ent;
2136 struct strlist *bidlist, *sdtlist;
2137 struct strlist_config cfg = {.dont_dupstr = true};
2138 struct str_node *nd, *nd2;
2139 char *buf, *path, *ptr = NULL;
2140 bool show_detail = false;
2141 int ret;
2142
2143 sdtlist = strlist__new(NULL, &cfg);
2144 if (!sdtlist) {
2145 pr_debug("Failed to allocate new strlist for SDT\n");
2146 return;
2147 }
2148 bidlist = build_id_cache__list_all(true);
2149 if (!bidlist) {
2150 pr_debug("Failed to get buildids: %d\n", errno);
2151 return;
2152 }
2153 strlist__for_each_entry(nd, bidlist) {
2154 pcache = probe_cache__new(nd->s, NULL);
2155 if (!pcache)
2156 continue;
2157 list_for_each_entry(ent, &pcache->entries, node) {
2158 if (!ent->sdt)
2159 continue;
2160 if (subsys_glob &&
2161 !strglobmatch(ent->pev.group, subsys_glob))
2162 continue;
2163 if (event_glob &&
2164 !strglobmatch(ent->pev.event, event_glob))
2165 continue;
2166 ret = asprintf(&buf, "%s:%s@%s", ent->pev.group,
2167 ent->pev.event, nd->s);
2168 if (ret > 0)
2169 strlist__add(sdtlist, buf);
2170 }
2171 probe_cache__delete(pcache);
2172 }
2173 strlist__delete(bidlist);
2174
2175 strlist__for_each_entry(nd, sdtlist) {
2176 buf = strchr(nd->s, '@');
2177 if (buf)
2178 *(buf++) = '\0';
2179 if (name_only) {
2180 printf("%s ", nd->s);
2181 continue;
2182 }
2183 nd2 = strlist__next(nd);
2184 if (nd2) {
2185 ptr = strchr(nd2->s, '@');
2186 if (ptr)
2187 *ptr = '\0';
2188 if (strcmp(nd->s, nd2->s) == 0)
2189 show_detail = true;
2190 }
2191 if (show_detail) {
2192 path = build_id_cache__origname(buf);
2193 ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf);
2194 if (ret > 0) {
2195 printf(" %-50s [%s]\n", buf, "SDT event");
2196 free(buf);
2197 }
2198 } else
2199 printf(" %-50s [%s]\n", nd->s, "SDT event");
2200 if (nd2) {
2201 if (strcmp(nd->s, nd2->s) != 0)
2202 show_detail = false;
2203 if (ptr)
2204 *ptr = '@';
2205 }
2206 }
2207 strlist__delete(sdtlist);
2208 }
2209
2210 int print_hwcache_events(const char *event_glob, bool name_only)
2211 {
2212 unsigned int type, op, i, evt_i = 0, evt_num = 0;
2213 char name[64];
2214 char **evt_list = NULL;
2215 bool evt_num_known = false;
2216
2217 restart:
2218 if (evt_num_known) {
2219 evt_list = zalloc(sizeof(char *) * evt_num);
2220 if (!evt_list)
2221 goto out_enomem;
2222 }
2223
2224 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
2225 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
2226 /* skip invalid cache type */
2227 if (!perf_evsel__is_cache_op_valid(type, op))
2228 continue;
2229
2230 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
2231 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
2232 name, sizeof(name));
2233 if (event_glob != NULL && !strglobmatch(name, event_glob))
2234 continue;
2235
2236 if (!is_event_supported(PERF_TYPE_HW_CACHE,
2237 type | (op << 8) | (i << 16)))
2238 continue;
2239
2240 if (!evt_num_known) {
2241 evt_num++;
2242 continue;
2243 }
2244
2245 evt_list[evt_i] = strdup(name);
2246 if (evt_list[evt_i] == NULL)
2247 goto out_enomem;
2248 evt_i++;
2249 }
2250 }
2251 }
2252
2253 if (!evt_num_known) {
2254 evt_num_known = true;
2255 goto restart;
2256 }
2257 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2258 evt_i = 0;
2259 while (evt_i < evt_num) {
2260 if (name_only) {
2261 printf("%s ", evt_list[evt_i++]);
2262 continue;
2263 }
2264 printf(" %-50s [%s]\n", evt_list[evt_i++],
2265 event_type_descriptors[PERF_TYPE_HW_CACHE]);
2266 }
2267 if (evt_num && pager_in_use())
2268 printf("\n");
2269
2270 out_free:
2271 evt_num = evt_i;
2272 for (evt_i = 0; evt_i < evt_num; evt_i++)
2273 zfree(&evt_list[evt_i]);
2274 zfree(&evt_list);
2275 return evt_num;
2276
2277 out_enomem:
2278 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]);
2279 if (evt_list)
2280 goto out_free;
2281 return evt_num;
2282 }
2283
2284 void print_symbol_events(const char *event_glob, unsigned type,
2285 struct event_symbol *syms, unsigned max,
2286 bool name_only)
2287 {
2288 unsigned int i, evt_i = 0, evt_num = 0;
2289 char name[MAX_NAME_LEN];
2290 char **evt_list = NULL;
2291 bool evt_num_known = false;
2292
2293 restart:
2294 if (evt_num_known) {
2295 evt_list = zalloc(sizeof(char *) * evt_num);
2296 if (!evt_list)
2297 goto out_enomem;
2298 syms -= max;
2299 }
2300
2301 for (i = 0; i < max; i++, syms++) {
2302
2303 if (event_glob != NULL && syms->symbol != NULL &&
2304 !(strglobmatch(syms->symbol, event_glob) ||
2305 (syms->alias && strglobmatch(syms->alias, event_glob))))
2306 continue;
2307
2308 if (!is_event_supported(type, i))
2309 continue;
2310
2311 if (!evt_num_known) {
2312 evt_num++;
2313 continue;
2314 }
2315
2316 if (!name_only && strlen(syms->alias))
2317 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
2318 else
2319 strncpy(name, syms->symbol, MAX_NAME_LEN);
2320
2321 evt_list[evt_i] = strdup(name);
2322 if (evt_list[evt_i] == NULL)
2323 goto out_enomem;
2324 evt_i++;
2325 }
2326
2327 if (!evt_num_known) {
2328 evt_num_known = true;
2329 goto restart;
2330 }
2331 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2332 evt_i = 0;
2333 while (evt_i < evt_num) {
2334 if (name_only) {
2335 printf("%s ", evt_list[evt_i++]);
2336 continue;
2337 }
2338 printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);
2339 }
2340 if (evt_num && pager_in_use())
2341 printf("\n");
2342
2343 out_free:
2344 evt_num = evt_i;
2345 for (evt_i = 0; evt_i < evt_num; evt_i++)
2346 zfree(&evt_list[evt_i]);
2347 zfree(&evt_list);
2348 return;
2349
2350 out_enomem:
2351 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]);
2352 if (evt_list)
2353 goto out_free;
2354 }
2355
2356 /*
2357 * Print the help text for the event symbols:
2358 */
2359 void print_events(const char *event_glob, bool name_only, bool quiet_flag,
2360 bool long_desc, bool details_flag)
2361 {
2362 print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
2363 event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
2364
2365 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
2366 event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
2367
2368 print_hwcache_events(event_glob, name_only);
2369
2370 print_pmu_events(event_glob, name_only, quiet_flag, long_desc,
2371 details_flag);
2372
2373 if (event_glob != NULL)
2374 return;
2375
2376 if (!name_only) {
2377 printf(" %-50s [%s]\n",
2378 "rNNN",
2379 event_type_descriptors[PERF_TYPE_RAW]);
2380 printf(" %-50s [%s]\n",
2381 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
2382 event_type_descriptors[PERF_TYPE_RAW]);
2383 if (pager_in_use())
2384 printf(" (see 'man perf-list' on how to encode it)\n\n");
2385
2386 printf(" %-50s [%s]\n",
2387 "mem:<addr>[/len][:access]",
2388 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
2389 if (pager_in_use())
2390 printf("\n");
2391 }
2392
2393 print_tracepoint_events(NULL, NULL, name_only);
2394
2395 print_sdt_events(NULL, NULL, name_only);
2396
2397 metricgroup__print(true, true, NULL, name_only);
2398 }
2399
2400 int parse_events__is_hardcoded_term(struct parse_events_term *term)
2401 {
2402 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2403 }
2404
2405 static int new_term(struct parse_events_term **_term,
2406 struct parse_events_term *temp,
2407 char *str, u64 num)
2408 {
2409 struct parse_events_term *term;
2410
2411 term = malloc(sizeof(*term));
2412 if (!term)
2413 return -ENOMEM;
2414
2415 *term = *temp;
2416 INIT_LIST_HEAD(&term->list);
2417 term->weak = false;
2418
2419 switch (term->type_val) {
2420 case PARSE_EVENTS__TERM_TYPE_NUM:
2421 term->val.num = num;
2422 break;
2423 case PARSE_EVENTS__TERM_TYPE_STR:
2424 term->val.str = str;
2425 break;
2426 default:
2427 free(term);
2428 return -EINVAL;
2429 }
2430
2431 *_term = term;
2432 return 0;
2433 }
2434
2435 int parse_events_term__num(struct parse_events_term **term,
2436 int type_term, char *config, u64 num,
2437 bool no_value,
2438 void *loc_term_, void *loc_val_)
2439 {
2440 YYLTYPE *loc_term = loc_term_;
2441 YYLTYPE *loc_val = loc_val_;
2442
2443 struct parse_events_term temp = {
2444 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
2445 .type_term = type_term,
2446 .config = config,
2447 .no_value = no_value,
2448 .err_term = loc_term ? loc_term->first_column : 0,
2449 .err_val = loc_val ? loc_val->first_column : 0,
2450 };
2451
2452 return new_term(term, &temp, NULL, num);
2453 }
2454
2455 int parse_events_term__str(struct parse_events_term **term,
2456 int type_term, char *config, char *str,
2457 void *loc_term_, void *loc_val_)
2458 {
2459 YYLTYPE *loc_term = loc_term_;
2460 YYLTYPE *loc_val = loc_val_;
2461
2462 struct parse_events_term temp = {
2463 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2464 .type_term = type_term,
2465 .config = config,
2466 .err_term = loc_term ? loc_term->first_column : 0,
2467 .err_val = loc_val ? loc_val->first_column : 0,
2468 };
2469
2470 return new_term(term, &temp, str, 0);
2471 }
2472
2473 int parse_events_term__sym_hw(struct parse_events_term **term,
2474 char *config, unsigned idx)
2475 {
2476 struct event_symbol *sym;
2477 struct parse_events_term temp = {
2478 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2479 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
2480 .config = config ?: (char *) "event",
2481 };
2482
2483 BUG_ON(idx >= PERF_COUNT_HW_MAX);
2484 sym = &event_symbols_hw[idx];
2485
2486 return new_term(term, &temp, (char *) sym->symbol, 0);
2487 }
2488
2489 int parse_events_term__clone(struct parse_events_term **new,
2490 struct parse_events_term *term)
2491 {
2492 struct parse_events_term temp = {
2493 .type_val = term->type_val,
2494 .type_term = term->type_term,
2495 .config = term->config,
2496 .err_term = term->err_term,
2497 .err_val = term->err_val,
2498 };
2499
2500 return new_term(new, &temp, term->val.str, term->val.num);
2501 }
2502
2503 int parse_events_copy_term_list(struct list_head *old,
2504 struct list_head **new)
2505 {
2506 struct parse_events_term *term, *n;
2507 int ret;
2508
2509 if (!old) {
2510 *new = NULL;
2511 return 0;
2512 }
2513
2514 *new = malloc(sizeof(struct list_head));
2515 if (!*new)
2516 return -ENOMEM;
2517 INIT_LIST_HEAD(*new);
2518
2519 list_for_each_entry (term, old, list) {
2520 ret = parse_events_term__clone(&n, term);
2521 if (ret)
2522 return ret;
2523 list_add_tail(&n->list, *new);
2524 }
2525 return 0;
2526 }
2527
2528 void parse_events_terms__purge(struct list_head *terms)
2529 {
2530 struct parse_events_term *term, *h;
2531
2532 list_for_each_entry_safe(term, h, terms, list) {
2533 if (term->array.nr_ranges)
2534 zfree(&term->array.ranges);
2535 list_del_init(&term->list);
2536 free(term);
2537 }
2538 }
2539
2540 void parse_events_terms__delete(struct list_head *terms)
2541 {
2542 if (!terms)
2543 return;
2544 parse_events_terms__purge(terms);
2545 free(terms);
2546 }
2547
2548 void parse_events__clear_array(struct parse_events_array *a)
2549 {
2550 zfree(&a->ranges);
2551 }
2552
2553 void parse_events_evlist_error(struct parse_events_state *parse_state,
2554 int idx, const char *str)
2555 {
2556 struct parse_events_error *err = parse_state->error;
2557
2558 if (!err)
2559 return;
2560 err->idx = idx;
2561 err->str = strdup(str);
2562 WARN_ONCE(!err->str, "WARNING: failed to allocate error string");
2563 }
2564
2565 static void config_terms_list(char *buf, size_t buf_sz)
2566 {
2567 int i;
2568 bool first = true;
2569
2570 buf[0] = '\0';
2571 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2572 const char *name = config_term_names[i];
2573
2574 if (!config_term_avail(i, NULL))
2575 continue;
2576 if (!name)
2577 continue;
2578 if (name[0] == '<')
2579 continue;
2580
2581 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2582 return;
2583
2584 if (!first)
2585 strcat(buf, ",");
2586 else
2587 first = false;
2588 strcat(buf, name);
2589 }
2590 }
2591
2592 /*
2593 * Return string contains valid config terms of an event.
2594 * @additional_terms: For terms such as PMU sysfs terms.
2595 */
2596 char *parse_events_formats_error_string(char *additional_terms)
2597 {
2598 char *str;
2599 /* "no-overwrite" is the longest name */
2600 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2601 (sizeof("no-overwrite") - 1)];
2602
2603 config_terms_list(static_terms, sizeof(static_terms));
2604 /* valid terms */
2605 if (additional_terms) {
2606 if (asprintf(&str, "valid terms: %s,%s",
2607 additional_terms, static_terms) < 0)
2608 goto fail;
2609 } else {
2610 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
2611 goto fail;
2612 }
2613 return str;
2614
2615 fail:
2616 return NULL;
2617 }
CRIS linux kernel tree