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