This source file includes following definitions.
- tp_event_has_id
- tracepoint_id_to_path
- tracepoint_name_to_path
- event_type
- parse_events__is_name_term
- get_config_name
- __add_event
- add_event
- add_event_tool
- parse_aliases
- parse_events_add_cache
- tracepoint_error
- add_tracepoint
- add_tracepoint_multi_event
- add_tracepoint_event
- add_tracepoint_multi_sys
- add_bpf_event
- parse_events_load_bpf_obj
- parse_events_config_bpf
- split_bpf_config_terms
- parse_events_load_bpf
- parse_breakpoint_type
- parse_events_add_breakpoint
- check_type_val
- config_term_avail
- parse_events__shrink_config_terms
- config_term_common
- config_term_pmu
- config_term_tracepoint
- config_attr
- get_config_terms
- parse_events_add_tracepoint
- parse_events_add_numeric
- parse_events_add_tool
- config_term_percore
- parse_events_add_pmu
- parse_events_multi_pmu_add
- parse_events__modifier_group
- is_same_uncore_block
- parse_events__set_leader_for_uncore_aliase
- parse_events__set_leader
- parse_events_update_lists
- get_event_modifier
- check_modifier
- parse_events__modifier_event
- parse_events_name
- comp_pmu
- perf_pmu__parse_cleanup
- perf_pmu__parse_init
- perf_pmu__parse_check
- parse_events__scanner
- parse_events_terms
- parse_events
- get_term_width
- parse_events_print_error
- parse_events_option
- foreach_evsel_in_last_glob
- set_filter
- parse_filter
- add_exclude_perf_filter
- exclude_perf
- cmp_string
- print_tracepoint_events
- is_valid_tracepoint
- is_event_supported
- print_sdt_events
- print_hwcache_events
- print_tool_event
- print_tool_events
- print_symbol_events
- print_events
- parse_events__is_hardcoded_term
- new_term
- parse_events_term__num
- parse_events_term__str
- parse_events_term__sym_hw
- parse_events_term__clone
- parse_events_copy_term_list
- parse_events_terms__purge
- parse_events_terms__delete
- parse_events__clear_array
- parse_events_evlist_error
- config_terms_list
- parse_events_formats_error_string
1
2 #include <linux/hw_breakpoint.h>
3 #include <linux/err.h>
4 #include <linux/zalloc.h>
5 #include <dirent.h>
6 #include <errno.h>
7 #include <sys/ioctl.h>
8 #include <sys/types.h>
9 #include <sys/stat.h>
10 #include <fcntl.h>
11 #include <sys/param.h>
12 #include "term.h"
13 #include "build-id.h"
14 #include "evlist.h"
15 #include "evsel.h"
16 #include <subcmd/pager.h>
17 #include <subcmd/parse-options.h>
18 #include "parse-events.h"
19 #include <subcmd/exec-cmd.h>
20 #include "string2.h"
21 #include "strlist.h"
22 #include "symbol.h"
23 #include "header.h"
24 #include "bpf-loader.h"
25 #include "debug.h"
26 #include <api/fs/tracing_path.h>
27 #include <perf/cpumap.h>
28 #include "parse-events-bison.h"
29 #define YY_EXTRA_TYPE int
30 #include "parse-events-flex.h"
31 #include "pmu.h"
32 #include "thread_map.h"
33 #include "probe-file.h"
34 #include "asm/bug.h"
35 #include "util/parse-branch-options.h"
36 #include "metricgroup.h"
37 #include "util/evsel_config.h"
38 #include "util/event.h"
39
40 #define MAX_NAME_LEN 100
41
42 #ifdef PARSER_DEBUG
43 extern int parse_events_debug;
44 #endif
45 int parse_events_parse(void *parse_state, void *scanner);
46 static int get_config_terms(struct list_head *head_config,
47 struct list_head *head_terms __maybe_unused);
48
49 static struct perf_pmu_event_symbol *perf_pmu_events_list;
50
51
52
53
54
55
56 static int perf_pmu_events_list_num;
57
58 struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
59 [PERF_COUNT_HW_CPU_CYCLES] = {
60 .symbol = "cpu-cycles",
61 .alias = "cycles",
62 },
63 [PERF_COUNT_HW_INSTRUCTIONS] = {
64 .symbol = "instructions",
65 .alias = "",
66 },
67 [PERF_COUNT_HW_CACHE_REFERENCES] = {
68 .symbol = "cache-references",
69 .alias = "",
70 },
71 [PERF_COUNT_HW_CACHE_MISSES] = {
72 .symbol = "cache-misses",
73 .alias = "",
74 },
75 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {
76 .symbol = "branch-instructions",
77 .alias = "branches",
78 },
79 [PERF_COUNT_HW_BRANCH_MISSES] = {
80 .symbol = "branch-misses",
81 .alias = "",
82 },
83 [PERF_COUNT_HW_BUS_CYCLES] = {
84 .symbol = "bus-cycles",
85 .alias = "",
86 },
87 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {
88 .symbol = "stalled-cycles-frontend",
89 .alias = "idle-cycles-frontend",
90 },
91 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {
92 .symbol = "stalled-cycles-backend",
93 .alias = "idle-cycles-backend",
94 },
95 [PERF_COUNT_HW_REF_CPU_CYCLES] = {
96 .symbol = "ref-cycles",
97 .alias = "",
98 },
99 };
100
101 struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
102 [PERF_COUNT_SW_CPU_CLOCK] = {
103 .symbol = "cpu-clock",
104 .alias = "",
105 },
106 [PERF_COUNT_SW_TASK_CLOCK] = {
107 .symbol = "task-clock",
108 .alias = "",
109 },
110 [PERF_COUNT_SW_PAGE_FAULTS] = {
111 .symbol = "page-faults",
112 .alias = "faults",
113 },
114 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {
115 .symbol = "context-switches",
116 .alias = "cs",
117 },
118 [PERF_COUNT_SW_CPU_MIGRATIONS] = {
119 .symbol = "cpu-migrations",
120 .alias = "migrations",
121 },
122 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {
123 .symbol = "minor-faults",
124 .alias = "",
125 },
126 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {
127 .symbol = "major-faults",
128 .alias = "",
129 },
130 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {
131 .symbol = "alignment-faults",
132 .alias = "",
133 },
134 [PERF_COUNT_SW_EMULATION_FAULTS] = {
135 .symbol = "emulation-faults",
136 .alias = "",
137 },
138 [PERF_COUNT_SW_DUMMY] = {
139 .symbol = "dummy",
140 .alias = "",
141 },
142 [PERF_COUNT_SW_BPF_OUTPUT] = {
143 .symbol = "bpf-output",
144 .alias = "",
145 },
146 };
147
148 #define __PERF_EVENT_FIELD(config, name) \
149 ((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
150
151 #define PERF_EVENT_RAW(config) __PERF_EVENT_FIELD(config, RAW)
152 #define PERF_EVENT_CONFIG(config) __PERF_EVENT_FIELD(config, CONFIG)
153 #define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
154 #define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
155
156 #define for_each_subsystem(sys_dir, sys_dirent) \
157 while ((sys_dirent = readdir(sys_dir)) != NULL) \
158 if (sys_dirent->d_type == DT_DIR && \
159 (strcmp(sys_dirent->d_name, ".")) && \
160 (strcmp(sys_dirent->d_name, "..")))
161
162 static int tp_event_has_id(const char *dir_path, struct dirent *evt_dir)
163 {
164 char evt_path[MAXPATHLEN];
165 int fd;
166
167 snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, evt_dir->d_name);
168 fd = open(evt_path, O_RDONLY);
169 if (fd < 0)
170 return -EINVAL;
171 close(fd);
172
173 return 0;
174 }
175
176 #define for_each_event(dir_path, evt_dir, evt_dirent) \
177 while ((evt_dirent = readdir(evt_dir)) != NULL) \
178 if (evt_dirent->d_type == DT_DIR && \
179 (strcmp(evt_dirent->d_name, ".")) && \
180 (strcmp(evt_dirent->d_name, "..")) && \
181 (!tp_event_has_id(dir_path, evt_dirent)))
182
183 #define MAX_EVENT_LENGTH 512
184
185
186 struct tracepoint_path *tracepoint_id_to_path(u64 config)
187 {
188 struct tracepoint_path *path = NULL;
189 DIR *sys_dir, *evt_dir;
190 struct dirent *sys_dirent, *evt_dirent;
191 char id_buf[24];
192 int fd;
193 u64 id;
194 char evt_path[MAXPATHLEN];
195 char *dir_path;
196
197 sys_dir = tracing_events__opendir();
198 if (!sys_dir)
199 return NULL;
200
201 for_each_subsystem(sys_dir, sys_dirent) {
202 dir_path = get_events_file(sys_dirent->d_name);
203 if (!dir_path)
204 continue;
205 evt_dir = opendir(dir_path);
206 if (!evt_dir)
207 goto next;
208
209 for_each_event(dir_path, evt_dir, evt_dirent) {
210
211 scnprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
212 evt_dirent->d_name);
213 fd = open(evt_path, O_RDONLY);
214 if (fd < 0)
215 continue;
216 if (read(fd, id_buf, sizeof(id_buf)) < 0) {
217 close(fd);
218 continue;
219 }
220 close(fd);
221 id = atoll(id_buf);
222 if (id == config) {
223 put_events_file(dir_path);
224 closedir(evt_dir);
225 closedir(sys_dir);
226 path = zalloc(sizeof(*path));
227 if (!path)
228 return NULL;
229 path->system = malloc(MAX_EVENT_LENGTH);
230 if (!path->system) {
231 free(path);
232 return NULL;
233 }
234 path->name = malloc(MAX_EVENT_LENGTH);
235 if (!path->name) {
236 zfree(&path->system);
237 free(path);
238 return NULL;
239 }
240 strncpy(path->system, sys_dirent->d_name,
241 MAX_EVENT_LENGTH);
242 strncpy(path->name, evt_dirent->d_name,
243 MAX_EVENT_LENGTH);
244 return path;
245 }
246 }
247 closedir(evt_dir);
248 next:
249 put_events_file(dir_path);
250 }
251
252 closedir(sys_dir);
253 return NULL;
254 }
255
256 struct tracepoint_path *tracepoint_name_to_path(const char *name)
257 {
258 struct tracepoint_path *path = zalloc(sizeof(*path));
259 char *str = strchr(name, ':');
260
261 if (path == NULL || str == NULL) {
262 free(path);
263 return NULL;
264 }
265
266 path->system = strndup(name, str - name);
267 path->name = strdup(str+1);
268
269 if (path->system == NULL || path->name == NULL) {
270 zfree(&path->system);
271 zfree(&path->name);
272 zfree(&path);
273 }
274
275 return path;
276 }
277
278 const char *event_type(int type)
279 {
280 switch (type) {
281 case PERF_TYPE_HARDWARE:
282 return "hardware";
283
284 case PERF_TYPE_SOFTWARE:
285 return "software";
286
287 case PERF_TYPE_TRACEPOINT:
288 return "tracepoint";
289
290 case PERF_TYPE_HW_CACHE:
291 return "hardware-cache";
292
293 default:
294 break;
295 }
296
297 return "unknown";
298 }
299
300 static int parse_events__is_name_term(struct parse_events_term *term)
301 {
302 return term->type_term == PARSE_EVENTS__TERM_TYPE_NAME;
303 }
304
305 static char *get_config_name(struct list_head *head_terms)
306 {
307 struct parse_events_term *term;
308
309 if (!head_terms)
310 return NULL;
311
312 list_for_each_entry(term, head_terms, list)
313 if (parse_events__is_name_term(term))
314 return term->val.str;
315
316 return NULL;
317 }
318
319 static struct evsel *
320 __add_event(struct list_head *list, int *idx,
321 struct perf_event_attr *attr,
322 char *name, struct perf_pmu *pmu,
323 struct list_head *config_terms, bool auto_merge_stats,
324 const char *cpu_list)
325 {
326 struct evsel *evsel;
327 struct perf_cpu_map *cpus = pmu ? pmu->cpus :
328 cpu_list ? perf_cpu_map__new(cpu_list) : NULL;
329
330 event_attr_init(attr);
331
332 evsel = perf_evsel__new_idx(attr, *idx);
333 if (!evsel)
334 return NULL;
335
336 (*idx)++;
337 evsel->core.cpus = perf_cpu_map__get(cpus);
338 evsel->core.own_cpus = perf_cpu_map__get(cpus);
339 evsel->core.system_wide = pmu ? pmu->is_uncore : false;
340 evsel->auto_merge_stats = auto_merge_stats;
341
342 if (name)
343 evsel->name = strdup(name);
344
345 if (config_terms)
346 list_splice(config_terms, &evsel->config_terms);
347
348 list_add_tail(&evsel->core.node, list);
349 return evsel;
350 }
351
352 static int add_event(struct list_head *list, int *idx,
353 struct perf_event_attr *attr, char *name,
354 struct list_head *config_terms)
355 {
356 return __add_event(list, idx, attr, name, NULL, config_terms, false, NULL) ? 0 : -ENOMEM;
357 }
358
359 static int add_event_tool(struct list_head *list, int *idx,
360 enum perf_tool_event tool_event)
361 {
362 struct evsel *evsel;
363 struct perf_event_attr attr = {
364 .type = PERF_TYPE_SOFTWARE,
365 .config = PERF_COUNT_SW_DUMMY,
366 };
367
368 evsel = __add_event(list, idx, &attr, NULL, NULL, NULL, false, "0");
369 if (!evsel)
370 return -ENOMEM;
371 evsel->tool_event = tool_event;
372 if (tool_event == PERF_TOOL_DURATION_TIME)
373 evsel->unit = strdup("ns");
374 return 0;
375 }
376
377 static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
378 {
379 int i, j;
380 int n, longest = -1;
381
382 for (i = 0; i < size; i++) {
383 for (j = 0; j < PERF_EVSEL__MAX_ALIASES && names[i][j]; j++) {
384 n = strlen(names[i][j]);
385 if (n > longest && !strncasecmp(str, names[i][j], n))
386 longest = n;
387 }
388 if (longest > 0)
389 return i;
390 }
391
392 return -1;
393 }
394
395 typedef int config_term_func_t(struct perf_event_attr *attr,
396 struct parse_events_term *term,
397 struct parse_events_error *err);
398 static int config_term_common(struct perf_event_attr *attr,
399 struct parse_events_term *term,
400 struct parse_events_error *err);
401 static int config_attr(struct perf_event_attr *attr,
402 struct list_head *head,
403 struct parse_events_error *err,
404 config_term_func_t config_term);
405
406 int parse_events_add_cache(struct list_head *list, int *idx,
407 char *type, char *op_result1, char *op_result2,
408 struct parse_events_error *err,
409 struct list_head *head_config)
410 {
411 struct perf_event_attr attr;
412 LIST_HEAD(config_terms);
413 char name[MAX_NAME_LEN], *config_name;
414 int cache_type = -1, cache_op = -1, cache_result = -1;
415 char *op_result[2] = { op_result1, op_result2 };
416 int i, n;
417
418
419
420
421
422 cache_type = parse_aliases(type, perf_evsel__hw_cache,
423 PERF_COUNT_HW_CACHE_MAX);
424 if (cache_type == -1)
425 return -EINVAL;
426
427 config_name = get_config_name(head_config);
428 n = snprintf(name, MAX_NAME_LEN, "%s", type);
429
430 for (i = 0; (i < 2) && (op_result[i]); i++) {
431 char *str = op_result[i];
432
433 n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
434
435 if (cache_op == -1) {
436 cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
437 PERF_COUNT_HW_CACHE_OP_MAX);
438 if (cache_op >= 0) {
439 if (!perf_evsel__is_cache_op_valid(cache_type, cache_op))
440 return -EINVAL;
441 continue;
442 }
443 }
444
445 if (cache_result == -1) {
446 cache_result = parse_aliases(str, perf_evsel__hw_cache_result,
447 PERF_COUNT_HW_CACHE_RESULT_MAX);
448 if (cache_result >= 0)
449 continue;
450 }
451 }
452
453
454
455
456 if (cache_op == -1)
457 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
458
459
460
461
462 if (cache_result == -1)
463 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
464
465 memset(&attr, 0, sizeof(attr));
466 attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
467 attr.type = PERF_TYPE_HW_CACHE;
468
469 if (head_config) {
470 if (config_attr(&attr, head_config, err,
471 config_term_common))
472 return -EINVAL;
473
474 if (get_config_terms(head_config, &config_terms))
475 return -ENOMEM;
476 }
477 return add_event(list, idx, &attr, config_name ? : name, &config_terms);
478 }
479
480 static void tracepoint_error(struct parse_events_error *e, int err,
481 const char *sys, const char *name)
482 {
483 char help[BUFSIZ];
484
485 if (!e)
486 return;
487
488
489
490
491
492 err = abs(err);
493
494 switch (err) {
495 case EACCES:
496 e->str = strdup("can't access trace events");
497 break;
498 case ENOENT:
499 e->str = strdup("unknown tracepoint");
500 break;
501 default:
502 e->str = strdup("failed to add tracepoint");
503 break;
504 }
505
506 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);
507 e->help = strdup(help);
508 }
509
510 static int add_tracepoint(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 struct evsel *evsel;
516
517 evsel = perf_evsel__newtp_idx(sys_name, evt_name, (*idx)++);
518 if (IS_ERR(evsel)) {
519 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name);
520 return PTR_ERR(evsel);
521 }
522
523 if (head_config) {
524 LIST_HEAD(config_terms);
525
526 if (get_config_terms(head_config, &config_terms))
527 return -ENOMEM;
528 list_splice(&config_terms, &evsel->config_terms);
529 }
530
531 list_add_tail(&evsel->core.node, list);
532 return 0;
533 }
534
535 static int add_tracepoint_multi_event(struct list_head *list, int *idx,
536 const char *sys_name, const char *evt_name,
537 struct parse_events_error *err,
538 struct list_head *head_config)
539 {
540 char *evt_path;
541 struct dirent *evt_ent;
542 DIR *evt_dir;
543 int ret = 0, found = 0;
544
545 evt_path = get_events_file(sys_name);
546 if (!evt_path) {
547 tracepoint_error(err, errno, sys_name, evt_name);
548 return -1;
549 }
550 evt_dir = opendir(evt_path);
551 if (!evt_dir) {
552 put_events_file(evt_path);
553 tracepoint_error(err, errno, sys_name, evt_name);
554 return -1;
555 }
556
557 while (!ret && (evt_ent = readdir(evt_dir))) {
558 if (!strcmp(evt_ent->d_name, ".")
559 || !strcmp(evt_ent->d_name, "..")
560 || !strcmp(evt_ent->d_name, "enable")
561 || !strcmp(evt_ent->d_name, "filter"))
562 continue;
563
564 if (!strglobmatch(evt_ent->d_name, evt_name))
565 continue;
566
567 found++;
568
569 ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name,
570 err, head_config);
571 }
572
573 if (!found) {
574 tracepoint_error(err, ENOENT, sys_name, evt_name);
575 ret = -1;
576 }
577
578 put_events_file(evt_path);
579 closedir(evt_dir);
580 return ret;
581 }
582
583 static int add_tracepoint_event(struct list_head *list, int *idx,
584 const char *sys_name, const char *evt_name,
585 struct parse_events_error *err,
586 struct list_head *head_config)
587 {
588 return strpbrk(evt_name, "*?") ?
589 add_tracepoint_multi_event(list, idx, sys_name, evt_name,
590 err, head_config) :
591 add_tracepoint(list, idx, sys_name, evt_name,
592 err, head_config);
593 }
594
595 static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
596 const char *sys_name, const char *evt_name,
597 struct parse_events_error *err,
598 struct list_head *head_config)
599 {
600 struct dirent *events_ent;
601 DIR *events_dir;
602 int ret = 0;
603
604 events_dir = tracing_events__opendir();
605 if (!events_dir) {
606 tracepoint_error(err, errno, sys_name, evt_name);
607 return -1;
608 }
609
610 while (!ret && (events_ent = readdir(events_dir))) {
611 if (!strcmp(events_ent->d_name, ".")
612 || !strcmp(events_ent->d_name, "..")
613 || !strcmp(events_ent->d_name, "enable")
614 || !strcmp(events_ent->d_name, "header_event")
615 || !strcmp(events_ent->d_name, "header_page"))
616 continue;
617
618 if (!strglobmatch(events_ent->d_name, sys_name))
619 continue;
620
621 ret = add_tracepoint_event(list, idx, events_ent->d_name,
622 evt_name, err, head_config);
623 }
624
625 closedir(events_dir);
626 return ret;
627 }
628
629 struct __add_bpf_event_param {
630 struct parse_events_state *parse_state;
631 struct list_head *list;
632 struct list_head *head_config;
633 };
634
635 static int add_bpf_event(const char *group, const char *event, int fd, struct bpf_object *obj,
636 void *_param)
637 {
638 LIST_HEAD(new_evsels);
639 struct __add_bpf_event_param *param = _param;
640 struct parse_events_state *parse_state = param->parse_state;
641 struct list_head *list = param->list;
642 struct evsel *pos;
643 int err;
644
645
646
647
648
649
650
651 if (group[0] == '!')
652 return 0;
653
654 pr_debug("add bpf event %s:%s and attach bpf program %d\n",
655 group, event, fd);
656
657 err = parse_events_add_tracepoint(&new_evsels, &parse_state->idx, group,
658 event, parse_state->error,
659 param->head_config);
660 if (err) {
661 struct evsel *evsel, *tmp;
662
663 pr_debug("Failed to add BPF event %s:%s\n",
664 group, event);
665 list_for_each_entry_safe(evsel, tmp, &new_evsels, core.node) {
666 list_del_init(&evsel->core.node);
667 evsel__delete(evsel);
668 }
669 return err;
670 }
671 pr_debug("adding %s:%s\n", group, event);
672
673 list_for_each_entry(pos, &new_evsels, core.node) {
674 pr_debug("adding %s:%s to %p\n",
675 group, event, pos);
676 pos->bpf_fd = fd;
677 pos->bpf_obj = obj;
678 }
679 list_splice(&new_evsels, list);
680 return 0;
681 }
682
683 int parse_events_load_bpf_obj(struct parse_events_state *parse_state,
684 struct list_head *list,
685 struct bpf_object *obj,
686 struct list_head *head_config)
687 {
688 int err;
689 char errbuf[BUFSIZ];
690 struct __add_bpf_event_param param = {parse_state, list, head_config};
691 static bool registered_unprobe_atexit = false;
692
693 if (IS_ERR(obj) || !obj) {
694 snprintf(errbuf, sizeof(errbuf),
695 "Internal error: load bpf obj with NULL");
696 err = -EINVAL;
697 goto errout;
698 }
699
700
701
702
703
704
705 if (!registered_unprobe_atexit) {
706 atexit(bpf__clear);
707 registered_unprobe_atexit = true;
708 }
709
710 err = bpf__probe(obj);
711 if (err) {
712 bpf__strerror_probe(obj, err, errbuf, sizeof(errbuf));
713 goto errout;
714 }
715
716 err = bpf__load(obj);
717 if (err) {
718 bpf__strerror_load(obj, err, errbuf, sizeof(errbuf));
719 goto errout;
720 }
721
722 err = bpf__foreach_event(obj, add_bpf_event, ¶m);
723 if (err) {
724 snprintf(errbuf, sizeof(errbuf),
725 "Attach events in BPF object failed");
726 goto errout;
727 }
728
729 return 0;
730 errout:
731 parse_state->error->help = strdup("(add -v to see detail)");
732 parse_state->error->str = strdup(errbuf);
733 return err;
734 }
735
736 static int
737 parse_events_config_bpf(struct parse_events_state *parse_state,
738 struct bpf_object *obj,
739 struct list_head *head_config)
740 {
741 struct parse_events_term *term;
742 int error_pos;
743
744 if (!head_config || list_empty(head_config))
745 return 0;
746
747 list_for_each_entry(term, head_config, list) {
748 char errbuf[BUFSIZ];
749 int err;
750
751 if (term->type_term != PARSE_EVENTS__TERM_TYPE_USER) {
752 snprintf(errbuf, sizeof(errbuf),
753 "Invalid config term for BPF object");
754 errbuf[BUFSIZ - 1] = '\0';
755
756 parse_state->error->idx = term->err_term;
757 parse_state->error->str = strdup(errbuf);
758 return -EINVAL;
759 }
760
761 err = bpf__config_obj(obj, term, parse_state->evlist, &error_pos);
762 if (err) {
763 bpf__strerror_config_obj(obj, term, parse_state->evlist,
764 &error_pos, err, errbuf,
765 sizeof(errbuf));
766 parse_state->error->help = strdup(
767 "Hint:\tValid config terms:\n"
768 " \tmap:[<arraymap>].value<indices>=[value]\n"
769 " \tmap:[<eventmap>].event<indices>=[event]\n"
770 "\n"
771 " \twhere <indices> is something like [0,3...5] or [all]\n"
772 " \t(add -v to see detail)");
773 parse_state->error->str = strdup(errbuf);
774 if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
775 parse_state->error->idx = term->err_val;
776 else
777 parse_state->error->idx = term->err_term + error_pos;
778 return err;
779 }
780 }
781 return 0;
782 }
783
784
785
786
787
788
789
790
791
792
793
794 static void
795 split_bpf_config_terms(struct list_head *evt_head_config,
796 struct list_head *obj_head_config)
797 {
798 struct parse_events_term *term, *temp;
799
800
801
802
803
804
805
806
807
808 list_for_each_entry_safe(term, temp, evt_head_config, list)
809 if (!parse_events__is_hardcoded_term(term))
810 list_move_tail(&term->list, obj_head_config);
811 }
812
813 int parse_events_load_bpf(struct parse_events_state *parse_state,
814 struct list_head *list,
815 char *bpf_file_name,
816 bool source,
817 struct list_head *head_config)
818 {
819 int err;
820 struct bpf_object *obj;
821 LIST_HEAD(obj_head_config);
822
823 if (head_config)
824 split_bpf_config_terms(head_config, &obj_head_config);
825
826 obj = bpf__prepare_load(bpf_file_name, source);
827 if (IS_ERR(obj)) {
828 char errbuf[BUFSIZ];
829
830 err = PTR_ERR(obj);
831
832 if (err == -ENOTSUP)
833 snprintf(errbuf, sizeof(errbuf),
834 "BPF support is not compiled");
835 else
836 bpf__strerror_prepare_load(bpf_file_name,
837 source,
838 -err, errbuf,
839 sizeof(errbuf));
840
841 parse_state->error->help = strdup("(add -v to see detail)");
842 parse_state->error->str = strdup(errbuf);
843 return err;
844 }
845
846 err = parse_events_load_bpf_obj(parse_state, list, obj, head_config);
847 if (err)
848 return err;
849 err = parse_events_config_bpf(parse_state, obj, &obj_head_config);
850
851
852
853
854
855 if (head_config)
856 list_splice_tail(&obj_head_config, head_config);
857 return err;
858 }
859
860 static int
861 parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
862 {
863 int i;
864
865 for (i = 0; i < 3; i++) {
866 if (!type || !type[i])
867 break;
868
869 #define CHECK_SET_TYPE(bit) \
870 do { \
871 if (attr->bp_type & bit) \
872 return -EINVAL; \
873 else \
874 attr->bp_type |= bit; \
875 } while (0)
876
877 switch (type[i]) {
878 case 'r':
879 CHECK_SET_TYPE(HW_BREAKPOINT_R);
880 break;
881 case 'w':
882 CHECK_SET_TYPE(HW_BREAKPOINT_W);
883 break;
884 case 'x':
885 CHECK_SET_TYPE(HW_BREAKPOINT_X);
886 break;
887 default:
888 return -EINVAL;
889 }
890 }
891
892 #undef CHECK_SET_TYPE
893
894 if (!attr->bp_type)
895 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
896
897 return 0;
898 }
899
900 int parse_events_add_breakpoint(struct list_head *list, int *idx,
901 void *ptr, char *type, u64 len)
902 {
903 struct perf_event_attr attr;
904
905 memset(&attr, 0, sizeof(attr));
906 attr.bp_addr = (unsigned long) ptr;
907
908 if (parse_breakpoint_type(type, &attr))
909 return -EINVAL;
910
911
912 if (!len) {
913 if (attr.bp_type == HW_BREAKPOINT_X)
914 len = sizeof(long);
915 else
916 len = HW_BREAKPOINT_LEN_4;
917 }
918
919 attr.bp_len = len;
920
921 attr.type = PERF_TYPE_BREAKPOINT;
922 attr.sample_period = 1;
923
924 return add_event(list, idx, &attr, NULL, NULL);
925 }
926
927 static int check_type_val(struct parse_events_term *term,
928 struct parse_events_error *err,
929 int type)
930 {
931 if (type == term->type_val)
932 return 0;
933
934 if (err) {
935 err->idx = term->err_val;
936 if (type == PARSE_EVENTS__TERM_TYPE_NUM)
937 err->str = strdup("expected numeric value");
938 else
939 err->str = strdup("expected string value");
940 }
941 return -EINVAL;
942 }
943
944
945
946
947 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
948 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>",
949 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config",
950 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1",
951 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2",
952 [PARSE_EVENTS__TERM_TYPE_NAME] = "name",
953 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period",
954 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq",
955 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type",
956 [PARSE_EVENTS__TERM_TYPE_TIME] = "time",
957 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph",
958 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size",
959 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit",
960 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit",
961 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack",
962 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr",
963 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite",
964 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",
965 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config",
966 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore",
967 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output",
968 };
969
970 static bool config_term_shrinked;
971
972 static bool
973 config_term_avail(int term_type, struct parse_events_error *err)
974 {
975 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {
976 err->str = strdup("Invalid term_type");
977 return false;
978 }
979 if (!config_term_shrinked)
980 return true;
981
982 switch (term_type) {
983 case PARSE_EVENTS__TERM_TYPE_CONFIG:
984 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
985 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
986 case PARSE_EVENTS__TERM_TYPE_NAME:
987 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
988 case PARSE_EVENTS__TERM_TYPE_PERCORE:
989 return true;
990 default:
991 if (!err)
992 return false;
993
994
995 if (asprintf(&err->str, "'%s' is not usable in 'perf stat'",
996 config_term_names[term_type]) < 0)
997 err->str = NULL;
998 return false;
999 }
1000 }
1001
1002 void parse_events__shrink_config_terms(void)
1003 {
1004 config_term_shrinked = true;
1005 }
1006
1007 static int config_term_common(struct perf_event_attr *attr,
1008 struct parse_events_term *term,
1009 struct parse_events_error *err)
1010 {
1011 #define CHECK_TYPE_VAL(type) \
1012 do { \
1013 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \
1014 return -EINVAL; \
1015 } while (0)
1016
1017 switch (term->type_term) {
1018 case PARSE_EVENTS__TERM_TYPE_CONFIG:
1019 CHECK_TYPE_VAL(NUM);
1020 attr->config = term->val.num;
1021 break;
1022 case PARSE_EVENTS__TERM_TYPE_CONFIG1:
1023 CHECK_TYPE_VAL(NUM);
1024 attr->config1 = term->val.num;
1025 break;
1026 case PARSE_EVENTS__TERM_TYPE_CONFIG2:
1027 CHECK_TYPE_VAL(NUM);
1028 attr->config2 = term->val.num;
1029 break;
1030 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1031 CHECK_TYPE_VAL(NUM);
1032 break;
1033 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1034 CHECK_TYPE_VAL(NUM);
1035 break;
1036 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1037 CHECK_TYPE_VAL(STR);
1038 if (strcmp(term->val.str, "no") &&
1039 parse_branch_str(term->val.str, &attr->branch_sample_type)) {
1040 err->str = strdup("invalid branch sample type");
1041 err->idx = term->err_val;
1042 return -EINVAL;
1043 }
1044 break;
1045 case PARSE_EVENTS__TERM_TYPE_TIME:
1046 CHECK_TYPE_VAL(NUM);
1047 if (term->val.num > 1) {
1048 err->str = strdup("expected 0 or 1");
1049 err->idx = term->err_val;
1050 return -EINVAL;
1051 }
1052 break;
1053 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1054 CHECK_TYPE_VAL(STR);
1055 break;
1056 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1057 CHECK_TYPE_VAL(NUM);
1058 break;
1059 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1060 CHECK_TYPE_VAL(NUM);
1061 break;
1062 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1063 CHECK_TYPE_VAL(NUM);
1064 break;
1065 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1066 CHECK_TYPE_VAL(NUM);
1067 break;
1068 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1069 CHECK_TYPE_VAL(NUM);
1070 break;
1071 case PARSE_EVENTS__TERM_TYPE_NAME:
1072 CHECK_TYPE_VAL(STR);
1073 break;
1074 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1075 CHECK_TYPE_VAL(NUM);
1076 break;
1077 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1078 CHECK_TYPE_VAL(NUM);
1079 break;
1080 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1081 CHECK_TYPE_VAL(NUM);
1082 if ((unsigned int)term->val.num > 1) {
1083 err->str = strdup("expected 0 or 1");
1084 err->idx = term->err_val;
1085 return -EINVAL;
1086 }
1087 break;
1088 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1089 CHECK_TYPE_VAL(NUM);
1090 break;
1091 default:
1092 err->str = strdup("unknown term");
1093 err->idx = term->err_term;
1094 err->help = parse_events_formats_error_string(NULL);
1095 return -EINVAL;
1096 }
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107 if (!config_term_avail(term->type_term, err))
1108 return -EINVAL;
1109 return 0;
1110 #undef CHECK_TYPE_VAL
1111 }
1112
1113 static int config_term_pmu(struct perf_event_attr *attr,
1114 struct parse_events_term *term,
1115 struct parse_events_error *err)
1116 {
1117 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||
1118 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG)
1119
1120
1121
1122
1123 return 0;
1124 else
1125 return config_term_common(attr, term, err);
1126 }
1127
1128 static int config_term_tracepoint(struct perf_event_attr *attr,
1129 struct parse_events_term *term,
1130 struct parse_events_error *err)
1131 {
1132 switch (term->type_term) {
1133 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1134 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1135 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1136 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1137 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1138 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1139 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1140 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1141 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1142 return config_term_common(attr, term, err);
1143 default:
1144 if (err) {
1145 err->idx = term->err_term;
1146 err->str = strdup("unknown term");
1147 err->help = strdup("valid terms: call-graph,stack-size\n");
1148 }
1149 return -EINVAL;
1150 }
1151
1152 return 0;
1153 }
1154
1155 static int config_attr(struct perf_event_attr *attr,
1156 struct list_head *head,
1157 struct parse_events_error *err,
1158 config_term_func_t config_term)
1159 {
1160 struct parse_events_term *term;
1161
1162 list_for_each_entry(term, head, list)
1163 if (config_term(attr, term, err))
1164 return -EINVAL;
1165
1166 return 0;
1167 }
1168
1169 static int get_config_terms(struct list_head *head_config,
1170 struct list_head *head_terms __maybe_unused)
1171 {
1172 #define ADD_CONFIG_TERM(__type, __name, __val) \
1173 do { \
1174 struct perf_evsel_config_term *__t; \
1175 \
1176 __t = zalloc(sizeof(*__t)); \
1177 if (!__t) \
1178 return -ENOMEM; \
1179 \
1180 INIT_LIST_HEAD(&__t->list); \
1181 __t->type = PERF_EVSEL__CONFIG_TERM_ ## __type; \
1182 __t->val.__name = __val; \
1183 __t->weak = term->weak; \
1184 list_add_tail(&__t->list, head_terms); \
1185 } while (0)
1186
1187 struct parse_events_term *term;
1188
1189 list_for_each_entry(term, head_config, list) {
1190 switch (term->type_term) {
1191 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
1192 ADD_CONFIG_TERM(PERIOD, period, term->val.num);
1193 break;
1194 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:
1195 ADD_CONFIG_TERM(FREQ, freq, term->val.num);
1196 break;
1197 case PARSE_EVENTS__TERM_TYPE_TIME:
1198 ADD_CONFIG_TERM(TIME, time, term->val.num);
1199 break;
1200 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:
1201 ADD_CONFIG_TERM(CALLGRAPH, callgraph, term->val.str);
1202 break;
1203 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
1204 ADD_CONFIG_TERM(BRANCH, branch, term->val.str);
1205 break;
1206 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
1207 ADD_CONFIG_TERM(STACK_USER, stack_user, term->val.num);
1208 break;
1209 case PARSE_EVENTS__TERM_TYPE_INHERIT:
1210 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 1 : 0);
1211 break;
1212 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
1213 ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
1214 break;
1215 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:
1216 ADD_CONFIG_TERM(MAX_STACK, max_stack, term->val.num);
1217 break;
1218 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
1219 ADD_CONFIG_TERM(MAX_EVENTS, max_events, term->val.num);
1220 break;
1221 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
1222 ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 1 : 0);
1223 break;
1224 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
1225 ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 0 : 1);
1226 break;
1227 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
1228 ADD_CONFIG_TERM(DRV_CFG, drv_cfg, term->val.str);
1229 break;
1230 case PARSE_EVENTS__TERM_TYPE_PERCORE:
1231 ADD_CONFIG_TERM(PERCORE, percore,
1232 term->val.num ? true : false);
1233 break;
1234 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:
1235 ADD_CONFIG_TERM(AUX_OUTPUT, aux_output, term->val.num ? 1 : 0);
1236 break;
1237 default:
1238 break;
1239 }
1240 }
1241 #undef ADD_EVSEL_CONFIG
1242 return 0;
1243 }
1244
1245 int parse_events_add_tracepoint(struct list_head *list, int *idx,
1246 const char *sys, const char *event,
1247 struct parse_events_error *err,
1248 struct list_head *head_config)
1249 {
1250 if (head_config) {
1251 struct perf_event_attr attr;
1252
1253 if (config_attr(&attr, head_config, err,
1254 config_term_tracepoint))
1255 return -EINVAL;
1256 }
1257
1258 if (strpbrk(sys, "*?"))
1259 return add_tracepoint_multi_sys(list, idx, sys, event,
1260 err, head_config);
1261 else
1262 return add_tracepoint_event(list, idx, sys, event,
1263 err, head_config);
1264 }
1265
1266 int parse_events_add_numeric(struct parse_events_state *parse_state,
1267 struct list_head *list,
1268 u32 type, u64 config,
1269 struct list_head *head_config)
1270 {
1271 struct perf_event_attr attr;
1272 LIST_HEAD(config_terms);
1273
1274 memset(&attr, 0, sizeof(attr));
1275 attr.type = type;
1276 attr.config = config;
1277
1278 if (head_config) {
1279 if (config_attr(&attr, head_config, parse_state->error,
1280 config_term_common))
1281 return -EINVAL;
1282
1283 if (get_config_terms(head_config, &config_terms))
1284 return -ENOMEM;
1285 }
1286
1287 return add_event(list, &parse_state->idx, &attr,
1288 get_config_name(head_config), &config_terms);
1289 }
1290
1291 int parse_events_add_tool(struct parse_events_state *parse_state,
1292 struct list_head *list,
1293 enum perf_tool_event tool_event)
1294 {
1295 return add_event_tool(list, &parse_state->idx, tool_event);
1296 }
1297
1298 static bool config_term_percore(struct list_head *config_terms)
1299 {
1300 struct perf_evsel_config_term *term;
1301
1302 list_for_each_entry(term, config_terms, list) {
1303 if (term->type == PERF_EVSEL__CONFIG_TERM_PERCORE)
1304 return term->val.percore;
1305 }
1306
1307 return false;
1308 }
1309
1310 int parse_events_add_pmu(struct parse_events_state *parse_state,
1311 struct list_head *list, char *name,
1312 struct list_head *head_config,
1313 bool auto_merge_stats,
1314 bool use_alias)
1315 {
1316 struct perf_event_attr attr;
1317 struct perf_pmu_info info;
1318 struct perf_pmu *pmu;
1319 struct evsel *evsel;
1320 struct parse_events_error *err = parse_state->error;
1321 bool use_uncore_alias;
1322 LIST_HEAD(config_terms);
1323
1324 pmu = perf_pmu__find(name);
1325 if (!pmu) {
1326 if (asprintf(&err->str,
1327 "Cannot find PMU `%s'. Missing kernel support?",
1328 name) < 0)
1329 err->str = NULL;
1330 return -EINVAL;
1331 }
1332
1333 if (pmu->default_config) {
1334 memcpy(&attr, pmu->default_config,
1335 sizeof(struct perf_event_attr));
1336 } else {
1337 memset(&attr, 0, sizeof(attr));
1338 }
1339
1340 use_uncore_alias = (pmu->is_uncore && use_alias);
1341
1342 if (!head_config) {
1343 attr.type = pmu->type;
1344 evsel = __add_event(list, &parse_state->idx, &attr, NULL, pmu, NULL,
1345 auto_merge_stats, NULL);
1346 if (evsel) {
1347 evsel->pmu_name = name;
1348 evsel->use_uncore_alias = use_uncore_alias;
1349 return 0;
1350 } else {
1351 return -ENOMEM;
1352 }
1353 }
1354
1355 if (perf_pmu__check_alias(pmu, head_config, &info))
1356 return -EINVAL;
1357
1358
1359
1360
1361
1362 if (config_attr(&attr, head_config, parse_state->error, config_term_pmu))
1363 return -EINVAL;
1364
1365 if (get_config_terms(head_config, &config_terms))
1366 return -ENOMEM;
1367
1368 if (perf_pmu__config(pmu, &attr, head_config, parse_state->error)) {
1369 struct perf_evsel_config_term *pos, *tmp;
1370
1371 list_for_each_entry_safe(pos, tmp, &config_terms, list) {
1372 list_del_init(&pos->list);
1373 free(pos);
1374 }
1375 return -EINVAL;
1376 }
1377
1378 evsel = __add_event(list, &parse_state->idx, &attr,
1379 get_config_name(head_config), pmu,
1380 &config_terms, auto_merge_stats, NULL);
1381 if (evsel) {
1382 evsel->unit = info.unit;
1383 evsel->scale = info.scale;
1384 evsel->per_pkg = info.per_pkg;
1385 evsel->snapshot = info.snapshot;
1386 evsel->metric_expr = info.metric_expr;
1387 evsel->metric_name = info.metric_name;
1388 evsel->pmu_name = name;
1389 evsel->use_uncore_alias = use_uncore_alias;
1390 evsel->percore = config_term_percore(&evsel->config_terms);
1391 }
1392
1393 return evsel ? 0 : -ENOMEM;
1394 }
1395
1396 int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
1397 char *str, struct list_head **listp)
1398 {
1399 struct list_head *head;
1400 struct parse_events_term *term;
1401 struct list_head *list;
1402 struct perf_pmu *pmu = NULL;
1403 int ok = 0;
1404
1405 *listp = NULL;
1406
1407 list = malloc(sizeof(struct list_head));
1408 if (!list)
1409 return -1;
1410 INIT_LIST_HEAD(list);
1411 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1412 struct perf_pmu_alias *alias;
1413
1414 list_for_each_entry(alias, &pmu->aliases, list) {
1415 if (!strcasecmp(alias->name, str)) {
1416 head = malloc(sizeof(struct list_head));
1417 if (!head)
1418 return -1;
1419 INIT_LIST_HEAD(head);
1420 if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
1421 str, 1, false, &str, NULL) < 0)
1422 return -1;
1423 list_add_tail(&term->list, head);
1424
1425 if (!parse_events_add_pmu(parse_state, list,
1426 pmu->name, head,
1427 true, true)) {
1428 pr_debug("%s -> %s/%s/\n", str,
1429 pmu->name, alias->str);
1430 ok++;
1431 }
1432
1433 parse_events_terms__delete(head);
1434 }
1435 }
1436 }
1437 if (!ok)
1438 return -1;
1439 *listp = list;
1440 return 0;
1441 }
1442
1443 int parse_events__modifier_group(struct list_head *list,
1444 char *event_mod)
1445 {
1446 return parse_events__modifier_event(list, event_mod, true);
1447 }
1448
1449
1450
1451
1452
1453 static bool is_same_uncore_block(const char *pmu_name_a, const char *pmu_name_b)
1454 {
1455 char *end_a, *end_b;
1456
1457 end_a = strrchr(pmu_name_a, '_');
1458 end_b = strrchr(pmu_name_b, '_');
1459
1460 if (!end_a || !end_b)
1461 return false;
1462
1463 if ((end_a - pmu_name_a) != (end_b - pmu_name_b))
1464 return false;
1465
1466 return (strncmp(pmu_name_a, pmu_name_b, end_a - pmu_name_a) == 0);
1467 }
1468
1469 static int
1470 parse_events__set_leader_for_uncore_aliase(char *name, struct list_head *list,
1471 struct parse_events_state *parse_state)
1472 {
1473 struct evsel *evsel, *leader;
1474 uintptr_t *leaders;
1475 bool is_leader = true;
1476 int i, nr_pmu = 0, total_members, ret = 0;
1477
1478 leader = list_first_entry(list, struct evsel, core.node);
1479 evsel = list_last_entry(list, struct evsel, core.node);
1480 total_members = evsel->idx - leader->idx + 1;
1481
1482 leaders = calloc(total_members, sizeof(uintptr_t));
1483 if (WARN_ON(!leaders))
1484 return 0;
1485
1486
1487
1488
1489
1490
1491 __evlist__for_each_entry(list, evsel) {
1492
1493
1494 if (!evsel->use_uncore_alias)
1495 goto out;
1496
1497
1498 if (!is_same_uncore_block(leader->pmu_name, evsel->pmu_name))
1499 goto out;
1500
1501 if (!is_leader)
1502 continue;
1503
1504
1505
1506
1507
1508 if ((leader != evsel) && (leader->pmu_name == evsel->pmu_name)) {
1509 is_leader = false;
1510 continue;
1511 }
1512
1513 WARN_ON(strcmp(leader->name, evsel->name));
1514
1515
1516 leaders[nr_pmu++] = (uintptr_t) evsel;
1517 }
1518
1519
1520 if (nr_pmu == total_members) {
1521 parse_state->nr_groups--;
1522 goto handled;
1523 }
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537 i = 0;
1538 __evlist__for_each_entry(list, evsel) {
1539 if (i >= nr_pmu)
1540 i = 0;
1541 evsel->leader = (struct evsel *) leaders[i++];
1542 }
1543
1544
1545 for (i = 0; i < nr_pmu; i++) {
1546 evsel = (struct evsel *) leaders[i];
1547 evsel->core.nr_members = total_members / nr_pmu;
1548 evsel->group_name = name ? strdup(name) : NULL;
1549 }
1550
1551
1552 parse_state->nr_groups += nr_pmu - 1;
1553
1554 handled:
1555 ret = 1;
1556 out:
1557 free(leaders);
1558 return ret;
1559 }
1560
1561 void parse_events__set_leader(char *name, struct list_head *list,
1562 struct parse_events_state *parse_state)
1563 {
1564 struct evsel *leader;
1565
1566 if (list_empty(list)) {
1567 WARN_ONCE(true, "WARNING: failed to set leader: empty list");
1568 return;
1569 }
1570
1571 if (parse_events__set_leader_for_uncore_aliase(name, list, parse_state))
1572 return;
1573
1574 __perf_evlist__set_leader(list);
1575 leader = list_entry(list->next, struct evsel, core.node);
1576 leader->group_name = name ? strdup(name) : NULL;
1577 }
1578
1579
1580 void parse_events_update_lists(struct list_head *list_event,
1581 struct list_head *list_all)
1582 {
1583
1584
1585
1586
1587
1588 list_splice_tail(list_event, list_all);
1589 free(list_event);
1590 }
1591
1592 struct event_modifier {
1593 int eu;
1594 int ek;
1595 int eh;
1596 int eH;
1597 int eG;
1598 int eI;
1599 int precise;
1600 int precise_max;
1601 int exclude_GH;
1602 int sample_read;
1603 int pinned;
1604 int weak;
1605 };
1606
1607 static int get_event_modifier(struct event_modifier *mod, char *str,
1608 struct evsel *evsel)
1609 {
1610 int eu = evsel ? evsel->core.attr.exclude_user : 0;
1611 int ek = evsel ? evsel->core.attr.exclude_kernel : 0;
1612 int eh = evsel ? evsel->core.attr.exclude_hv : 0;
1613 int eH = evsel ? evsel->core.attr.exclude_host : 0;
1614 int eG = evsel ? evsel->core.attr.exclude_guest : 0;
1615 int eI = evsel ? evsel->core.attr.exclude_idle : 0;
1616 int precise = evsel ? evsel->core.attr.precise_ip : 0;
1617 int precise_max = 0;
1618 int sample_read = 0;
1619 int pinned = evsel ? evsel->core.attr.pinned : 0;
1620
1621 int exclude = eu | ek | eh;
1622 int exclude_GH = evsel ? evsel->exclude_GH : 0;
1623 int weak = 0;
1624
1625 memset(mod, 0, sizeof(*mod));
1626
1627 while (*str) {
1628 if (*str == 'u') {
1629 if (!exclude)
1630 exclude = eu = ek = eh = 1;
1631 eu = 0;
1632 } else if (*str == 'k') {
1633 if (!exclude)
1634 exclude = eu = ek = eh = 1;
1635 ek = 0;
1636 } else if (*str == 'h') {
1637 if (!exclude)
1638 exclude = eu = ek = eh = 1;
1639 eh = 0;
1640 } else if (*str == 'G') {
1641 if (!exclude_GH)
1642 exclude_GH = eG = eH = 1;
1643 eG = 0;
1644 } else if (*str == 'H') {
1645 if (!exclude_GH)
1646 exclude_GH = eG = eH = 1;
1647 eH = 0;
1648 } else if (*str == 'I') {
1649 eI = 1;
1650 } else if (*str == 'p') {
1651 precise++;
1652
1653 if (!exclude_GH)
1654 eG = 1;
1655 } else if (*str == 'P') {
1656 precise_max = 1;
1657 } else if (*str == 'S') {
1658 sample_read = 1;
1659 } else if (*str == 'D') {
1660 pinned = 1;
1661 } else if (*str == 'W') {
1662 weak = 1;
1663 } else
1664 break;
1665
1666 ++str;
1667 }
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679 if (precise > 3)
1680 return -EINVAL;
1681
1682 mod->eu = eu;
1683 mod->ek = ek;
1684 mod->eh = eh;
1685 mod->eH = eH;
1686 mod->eG = eG;
1687 mod->eI = eI;
1688 mod->precise = precise;
1689 mod->precise_max = precise_max;
1690 mod->exclude_GH = exclude_GH;
1691 mod->sample_read = sample_read;
1692 mod->pinned = pinned;
1693 mod->weak = weak;
1694
1695 return 0;
1696 }
1697
1698
1699
1700
1701
1702 static int check_modifier(char *str)
1703 {
1704 char *p = str;
1705
1706
1707 if (strlen(str) > (sizeof("ukhGHpppPSDIW") - 1))
1708 return -1;
1709
1710 while (*p) {
1711 if (*p != 'p' && strchr(p + 1, *p))
1712 return -1;
1713 p++;
1714 }
1715
1716 return 0;
1717 }
1718
1719 int parse_events__modifier_event(struct list_head *list, char *str, bool add)
1720 {
1721 struct evsel *evsel;
1722 struct event_modifier mod;
1723
1724 if (str == NULL)
1725 return 0;
1726
1727 if (check_modifier(str))
1728 return -EINVAL;
1729
1730 if (!add && get_event_modifier(&mod, str, NULL))
1731 return -EINVAL;
1732
1733 __evlist__for_each_entry(list, evsel) {
1734 if (add && get_event_modifier(&mod, str, evsel))
1735 return -EINVAL;
1736
1737 evsel->core.attr.exclude_user = mod.eu;
1738 evsel->core.attr.exclude_kernel = mod.ek;
1739 evsel->core.attr.exclude_hv = mod.eh;
1740 evsel->core.attr.precise_ip = mod.precise;
1741 evsel->core.attr.exclude_host = mod.eH;
1742 evsel->core.attr.exclude_guest = mod.eG;
1743 evsel->core.attr.exclude_idle = mod.eI;
1744 evsel->exclude_GH = mod.exclude_GH;
1745 evsel->sample_read = mod.sample_read;
1746 evsel->precise_max = mod.precise_max;
1747 evsel->weak_group = mod.weak;
1748
1749 if (perf_evsel__is_group_leader(evsel))
1750 evsel->core.attr.pinned = mod.pinned;
1751 }
1752
1753 return 0;
1754 }
1755
1756 int parse_events_name(struct list_head *list, char *name)
1757 {
1758 struct evsel *evsel;
1759
1760 __evlist__for_each_entry(list, evsel) {
1761 if (!evsel->name)
1762 evsel->name = strdup(name);
1763 }
1764
1765 return 0;
1766 }
1767
1768 static int
1769 comp_pmu(const void *p1, const void *p2)
1770 {
1771 struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
1772 struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
1773
1774 return strcasecmp(pmu1->symbol, pmu2->symbol);
1775 }
1776
1777 static void perf_pmu__parse_cleanup(void)
1778 {
1779 if (perf_pmu_events_list_num > 0) {
1780 struct perf_pmu_event_symbol *p;
1781 int i;
1782
1783 for (i = 0; i < perf_pmu_events_list_num; i++) {
1784 p = perf_pmu_events_list + i;
1785 zfree(&p->symbol);
1786 }
1787 zfree(&perf_pmu_events_list);
1788 perf_pmu_events_list_num = 0;
1789 }
1790 }
1791
1792 #define SET_SYMBOL(str, stype) \
1793 do { \
1794 p->symbol = str; \
1795 if (!p->symbol) \
1796 goto err; \
1797 p->type = stype; \
1798 } while (0)
1799
1800
1801
1802
1803
1804 static void perf_pmu__parse_init(void)
1805 {
1806
1807 struct perf_pmu *pmu = NULL;
1808 struct perf_pmu_alias *alias;
1809 int len = 0;
1810
1811 pmu = NULL;
1812 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1813 list_for_each_entry(alias, &pmu->aliases, list) {
1814 if (strchr(alias->name, '-'))
1815 len++;
1816 len++;
1817 }
1818 }
1819
1820 if (len == 0) {
1821 perf_pmu_events_list_num = -1;
1822 return;
1823 }
1824 perf_pmu_events_list = malloc(sizeof(struct perf_pmu_event_symbol) * len);
1825 if (!perf_pmu_events_list)
1826 return;
1827 perf_pmu_events_list_num = len;
1828
1829 len = 0;
1830 pmu = NULL;
1831 while ((pmu = perf_pmu__scan(pmu)) != NULL) {
1832 list_for_each_entry(alias, &pmu->aliases, list) {
1833 struct perf_pmu_event_symbol *p = perf_pmu_events_list + len;
1834 char *tmp = strchr(alias->name, '-');
1835
1836 if (tmp != NULL) {
1837 SET_SYMBOL(strndup(alias->name, tmp - alias->name),
1838 PMU_EVENT_SYMBOL_PREFIX);
1839 p++;
1840 SET_SYMBOL(strdup(++tmp), PMU_EVENT_SYMBOL_SUFFIX);
1841 len += 2;
1842 } else {
1843 SET_SYMBOL(strdup(alias->name), PMU_EVENT_SYMBOL);
1844 len++;
1845 }
1846 }
1847 }
1848 qsort(perf_pmu_events_list, len,
1849 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1850
1851 return;
1852 err:
1853 perf_pmu__parse_cleanup();
1854 }
1855
1856 enum perf_pmu_event_symbol_type
1857 perf_pmu__parse_check(const char *name)
1858 {
1859 struct perf_pmu_event_symbol p, *r;
1860
1861
1862 if (perf_pmu_events_list_num == 0)
1863 perf_pmu__parse_init();
1864
1865
1866
1867
1868
1869 if ((perf_pmu_events_list_num <= 0) || !strcmp(name, "cpu"))
1870 return PMU_EVENT_SYMBOL_ERR;
1871
1872 p.symbol = strdup(name);
1873 r = bsearch(&p, perf_pmu_events_list,
1874 (size_t) perf_pmu_events_list_num,
1875 sizeof(struct perf_pmu_event_symbol), comp_pmu);
1876 zfree(&p.symbol);
1877 return r ? r->type : PMU_EVENT_SYMBOL_ERR;
1878 }
1879
1880 static int parse_events__scanner(const char *str, void *parse_state, int start_token)
1881 {
1882 YY_BUFFER_STATE buffer;
1883 void *scanner;
1884 int ret;
1885
1886 ret = parse_events_lex_init_extra(start_token, &scanner);
1887 if (ret)
1888 return ret;
1889
1890 buffer = parse_events__scan_string(str, scanner);
1891
1892 #ifdef PARSER_DEBUG
1893 parse_events_debug = 1;
1894 #endif
1895 ret = parse_events_parse(parse_state, scanner);
1896
1897 parse_events__flush_buffer(buffer, scanner);
1898 parse_events__delete_buffer(buffer, scanner);
1899 parse_events_lex_destroy(scanner);
1900 return ret;
1901 }
1902
1903
1904
1905
1906 int parse_events_terms(struct list_head *terms, const char *str)
1907 {
1908 struct parse_events_state parse_state = {
1909 .terms = NULL,
1910 };
1911 int ret;
1912
1913 ret = parse_events__scanner(str, &parse_state, PE_START_TERMS);
1914 if (!ret) {
1915 list_splice(parse_state.terms, terms);
1916 zfree(&parse_state.terms);
1917 return 0;
1918 }
1919
1920 parse_events_terms__delete(parse_state.terms);
1921 return ret;
1922 }
1923
1924 int parse_events(struct evlist *evlist, const char *str,
1925 struct parse_events_error *err)
1926 {
1927 struct parse_events_state parse_state = {
1928 .list = LIST_HEAD_INIT(parse_state.list),
1929 .idx = evlist->core.nr_entries,
1930 .error = err,
1931 .evlist = evlist,
1932 };
1933 int ret;
1934
1935 ret = parse_events__scanner(str, &parse_state, PE_START_EVENTS);
1936 perf_pmu__parse_cleanup();
1937
1938 if (!ret && list_empty(&parse_state.list)) {
1939 WARN_ONCE(true, "WARNING: event parser found nothing\n");
1940 return -1;
1941 }
1942
1943
1944
1945
1946 perf_evlist__splice_list_tail(evlist, &parse_state.list);
1947
1948 if (!ret) {
1949 struct evsel *last;
1950
1951 evlist->nr_groups += parse_state.nr_groups;
1952 last = evlist__last(evlist);
1953 last->cmdline_group_boundary = true;
1954
1955 return 0;
1956 }
1957
1958
1959
1960
1961
1962
1963 return ret;
1964 }
1965
1966 #define MAX_WIDTH 1000
1967 static int get_term_width(void)
1968 {
1969 struct winsize ws;
1970
1971 get_term_dimensions(&ws);
1972 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
1973 }
1974
1975 void parse_events_print_error(struct parse_events_error *err,
1976 const char *event)
1977 {
1978 const char *str = "invalid or unsupported event: ";
1979 char _buf[MAX_WIDTH];
1980 char *buf = (char *) event;
1981 int idx = 0;
1982
1983 if (err->str) {
1984
1985 int width = get_term_width() - 2;
1986 int len_event = strlen(event);
1987 int len_str, max_len, cut = 0;
1988
1989
1990
1991
1992
1993 int max_err_idx = 13;
1994
1995
1996
1997
1998
1999 str = "event syntax error: ";
2000 len_str = strlen(str);
2001 max_len = width - len_str;
2002
2003 buf = _buf;
2004
2005
2006 if (err->idx > max_err_idx)
2007 cut = err->idx - max_err_idx;
2008
2009 strncpy(buf, event + cut, max_len);
2010
2011
2012 if (cut)
2013 buf[0] = buf[1] = '.';
2014
2015 if ((len_event - cut) > max_len) {
2016 buf[max_len - 1] = buf[max_len - 2] = '.';
2017 buf[max_len] = 0;
2018 }
2019
2020 idx = len_str + err->idx - cut;
2021 }
2022
2023 fprintf(stderr, "%s'%s'\n", str, buf);
2024 if (idx) {
2025 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err->str);
2026 if (err->help)
2027 fprintf(stderr, "\n%s\n", err->help);
2028 zfree(&err->str);
2029 zfree(&err->help);
2030 }
2031 }
2032
2033 #undef MAX_WIDTH
2034
2035 int parse_events_option(const struct option *opt, const char *str,
2036 int unset __maybe_unused)
2037 {
2038 struct evlist *evlist = *(struct evlist **)opt->value;
2039 struct parse_events_error err = { .idx = 0, };
2040 int ret = parse_events(evlist, str, &err);
2041
2042 if (ret) {
2043 parse_events_print_error(&err, str);
2044 fprintf(stderr, "Run 'perf list' for a list of valid events\n");
2045 }
2046
2047 return ret;
2048 }
2049
2050 static int
2051 foreach_evsel_in_last_glob(struct evlist *evlist,
2052 int (*func)(struct evsel *evsel,
2053 const void *arg),
2054 const void *arg)
2055 {
2056 struct evsel *last = NULL;
2057 int err;
2058
2059
2060
2061
2062
2063
2064
2065 if (evlist->core.nr_entries > 0)
2066 last = evlist__last(evlist);
2067
2068 do {
2069 err = (*func)(last, arg);
2070 if (err)
2071 return -1;
2072 if (!last)
2073 return 0;
2074
2075 if (last->core.node.prev == &evlist->core.entries)
2076 return 0;
2077 last = list_entry(last->core.node.prev, struct evsel, core.node);
2078 } while (!last->cmdline_group_boundary);
2079
2080 return 0;
2081 }
2082
2083 static int set_filter(struct evsel *evsel, const void *arg)
2084 {
2085 const char *str = arg;
2086 bool found = false;
2087 int nr_addr_filters = 0;
2088 struct perf_pmu *pmu = NULL;
2089
2090 if (evsel == NULL) {
2091 fprintf(stderr,
2092 "--filter option should follow a -e tracepoint or HW tracer option\n");
2093 return -1;
2094 }
2095
2096 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) {
2097 if (perf_evsel__append_tp_filter(evsel, str) < 0) {
2098 fprintf(stderr,
2099 "not enough memory to hold filter string\n");
2100 return -1;
2101 }
2102
2103 return 0;
2104 }
2105
2106 while ((pmu = perf_pmu__scan(pmu)) != NULL)
2107 if (pmu->type == evsel->core.attr.type) {
2108 found = true;
2109 break;
2110 }
2111
2112 if (found)
2113 perf_pmu__scan_file(pmu, "nr_addr_filters",
2114 "%d", &nr_addr_filters);
2115
2116 if (!nr_addr_filters) {
2117 fprintf(stderr,
2118 "This CPU does not support address filtering\n");
2119 return -1;
2120 }
2121
2122 if (perf_evsel__append_addr_filter(evsel, str) < 0) {
2123 fprintf(stderr,
2124 "not enough memory to hold filter string\n");
2125 return -1;
2126 }
2127
2128 return 0;
2129 }
2130
2131 int parse_filter(const struct option *opt, const char *str,
2132 int unset __maybe_unused)
2133 {
2134 struct evlist *evlist = *(struct evlist **)opt->value;
2135
2136 return foreach_evsel_in_last_glob(evlist, set_filter,
2137 (const void *)str);
2138 }
2139
2140 static int add_exclude_perf_filter(struct evsel *evsel,
2141 const void *arg __maybe_unused)
2142 {
2143 char new_filter[64];
2144
2145 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) {
2146 fprintf(stderr,
2147 "--exclude-perf option should follow a -e tracepoint option\n");
2148 return -1;
2149 }
2150
2151 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());
2152
2153 if (perf_evsel__append_tp_filter(evsel, new_filter) < 0) {
2154 fprintf(stderr,
2155 "not enough memory to hold filter string\n");
2156 return -1;
2157 }
2158
2159 return 0;
2160 }
2161
2162 int exclude_perf(const struct option *opt,
2163 const char *arg __maybe_unused,
2164 int unset __maybe_unused)
2165 {
2166 struct evlist *evlist = *(struct evlist **)opt->value;
2167
2168 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,
2169 NULL);
2170 }
2171
2172 static const char * const event_type_descriptors[] = {
2173 "Hardware event",
2174 "Software event",
2175 "Tracepoint event",
2176 "Hardware cache event",
2177 "Raw hardware event descriptor",
2178 "Hardware breakpoint",
2179 };
2180
2181 static int cmp_string(const void *a, const void *b)
2182 {
2183 const char * const *as = a;
2184 const char * const *bs = b;
2185
2186 return strcmp(*as, *bs);
2187 }
2188
2189
2190
2191
2192
2193 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
2194 bool name_only)
2195 {
2196 DIR *sys_dir, *evt_dir;
2197 struct dirent *sys_dirent, *evt_dirent;
2198 char evt_path[MAXPATHLEN];
2199 char *dir_path;
2200 char **evt_list = NULL;
2201 unsigned int evt_i = 0, evt_num = 0;
2202 bool evt_num_known = false;
2203
2204 restart:
2205 sys_dir = tracing_events__opendir();
2206 if (!sys_dir)
2207 return;
2208
2209 if (evt_num_known) {
2210 evt_list = zalloc(sizeof(char *) * evt_num);
2211 if (!evt_list)
2212 goto out_close_sys_dir;
2213 }
2214
2215 for_each_subsystem(sys_dir, sys_dirent) {
2216 if (subsys_glob != NULL &&
2217 !strglobmatch(sys_dirent->d_name, subsys_glob))
2218 continue;
2219
2220 dir_path = get_events_file(sys_dirent->d_name);
2221 if (!dir_path)
2222 continue;
2223 evt_dir = opendir(dir_path);
2224 if (!evt_dir)
2225 goto next;
2226
2227 for_each_event(dir_path, evt_dir, evt_dirent) {
2228 if (event_glob != NULL &&
2229 !strglobmatch(evt_dirent->d_name, event_glob))
2230 continue;
2231
2232 if (!evt_num_known) {
2233 evt_num++;
2234 continue;
2235 }
2236
2237 snprintf(evt_path, MAXPATHLEN, "%s:%s",
2238 sys_dirent->d_name, evt_dirent->d_name);
2239
2240 evt_list[evt_i] = strdup(evt_path);
2241 if (evt_list[evt_i] == NULL) {
2242 put_events_file(dir_path);
2243 goto out_close_evt_dir;
2244 }
2245 evt_i++;
2246 }
2247 closedir(evt_dir);
2248 next:
2249 put_events_file(dir_path);
2250 }
2251 closedir(sys_dir);
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_TRACEPOINT]);
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;
2276
2277 out_close_evt_dir:
2278 closedir(evt_dir);
2279 out_close_sys_dir:
2280 closedir(sys_dir);
2281
2282 printf("FATAL: not enough memory to print %s\n",
2283 event_type_descriptors[PERF_TYPE_TRACEPOINT]);
2284 if (evt_list)
2285 goto out_free;
2286 }
2287
2288
2289
2290
2291
2292 int is_valid_tracepoint(const char *event_string)
2293 {
2294 DIR *sys_dir, *evt_dir;
2295 struct dirent *sys_dirent, *evt_dirent;
2296 char evt_path[MAXPATHLEN];
2297 char *dir_path;
2298
2299 sys_dir = tracing_events__opendir();
2300 if (!sys_dir)
2301 return 0;
2302
2303 for_each_subsystem(sys_dir, sys_dirent) {
2304 dir_path = get_events_file(sys_dirent->d_name);
2305 if (!dir_path)
2306 continue;
2307 evt_dir = opendir(dir_path);
2308 if (!evt_dir)
2309 goto next;
2310
2311 for_each_event(dir_path, evt_dir, evt_dirent) {
2312 snprintf(evt_path, MAXPATHLEN, "%s:%s",
2313 sys_dirent->d_name, evt_dirent->d_name);
2314 if (!strcmp(evt_path, event_string)) {
2315 closedir(evt_dir);
2316 closedir(sys_dir);
2317 return 1;
2318 }
2319 }
2320 closedir(evt_dir);
2321 next:
2322 put_events_file(dir_path);
2323 }
2324 closedir(sys_dir);
2325 return 0;
2326 }
2327
2328 static bool is_event_supported(u8 type, unsigned config)
2329 {
2330 bool ret = true;
2331 int open_return;
2332 struct evsel *evsel;
2333 struct perf_event_attr attr = {
2334 .type = type,
2335 .config = config,
2336 .disabled = 1,
2337 };
2338 struct perf_thread_map *tmap = thread_map__new_by_tid(0);
2339
2340 if (tmap == NULL)
2341 return false;
2342
2343 evsel = evsel__new(&attr);
2344 if (evsel) {
2345 open_return = evsel__open(evsel, NULL, tmap);
2346 ret = open_return >= 0;
2347
2348 if (open_return == -EACCES) {
2349
2350
2351
2352
2353
2354
2355
2356 evsel->core.attr.exclude_kernel = 1;
2357 ret = evsel__open(evsel, NULL, tmap) >= 0;
2358 }
2359 evsel__delete(evsel);
2360 }
2361
2362 perf_thread_map__put(tmap);
2363 return ret;
2364 }
2365
2366 void print_sdt_events(const char *subsys_glob, const char *event_glob,
2367 bool name_only)
2368 {
2369 struct probe_cache *pcache;
2370 struct probe_cache_entry *ent;
2371 struct strlist *bidlist, *sdtlist;
2372 struct strlist_config cfg = {.dont_dupstr = true};
2373 struct str_node *nd, *nd2;
2374 char *buf, *path, *ptr = NULL;
2375 bool show_detail = false;
2376 int ret;
2377
2378 sdtlist = strlist__new(NULL, &cfg);
2379 if (!sdtlist) {
2380 pr_debug("Failed to allocate new strlist for SDT\n");
2381 return;
2382 }
2383 bidlist = build_id_cache__list_all(true);
2384 if (!bidlist) {
2385 pr_debug("Failed to get buildids: %d\n", errno);
2386 return;
2387 }
2388 strlist__for_each_entry(nd, bidlist) {
2389 pcache = probe_cache__new(nd->s, NULL);
2390 if (!pcache)
2391 continue;
2392 list_for_each_entry(ent, &pcache->entries, node) {
2393 if (!ent->sdt)
2394 continue;
2395 if (subsys_glob &&
2396 !strglobmatch(ent->pev.group, subsys_glob))
2397 continue;
2398 if (event_glob &&
2399 !strglobmatch(ent->pev.event, event_glob))
2400 continue;
2401 ret = asprintf(&buf, "%s:%s@%s", ent->pev.group,
2402 ent->pev.event, nd->s);
2403 if (ret > 0)
2404 strlist__add(sdtlist, buf);
2405 }
2406 probe_cache__delete(pcache);
2407 }
2408 strlist__delete(bidlist);
2409
2410 strlist__for_each_entry(nd, sdtlist) {
2411 buf = strchr(nd->s, '@');
2412 if (buf)
2413 *(buf++) = '\0';
2414 if (name_only) {
2415 printf("%s ", nd->s);
2416 continue;
2417 }
2418 nd2 = strlist__next(nd);
2419 if (nd2) {
2420 ptr = strchr(nd2->s, '@');
2421 if (ptr)
2422 *ptr = '\0';
2423 if (strcmp(nd->s, nd2->s) == 0)
2424 show_detail = true;
2425 }
2426 if (show_detail) {
2427 path = build_id_cache__origname(buf);
2428 ret = asprintf(&buf, "%s@%s(%.12s)", nd->s, path, buf);
2429 if (ret > 0) {
2430 printf(" %-50s [%s]\n", buf, "SDT event");
2431 free(buf);
2432 }
2433 free(path);
2434 } else
2435 printf(" %-50s [%s]\n", nd->s, "SDT event");
2436 if (nd2) {
2437 if (strcmp(nd->s, nd2->s) != 0)
2438 show_detail = false;
2439 if (ptr)
2440 *ptr = '@';
2441 }
2442 }
2443 strlist__delete(sdtlist);
2444 }
2445
2446 int print_hwcache_events(const char *event_glob, bool name_only)
2447 {
2448 unsigned int type, op, i, evt_i = 0, evt_num = 0;
2449 char name[64];
2450 char **evt_list = NULL;
2451 bool evt_num_known = false;
2452
2453 restart:
2454 if (evt_num_known) {
2455 evt_list = zalloc(sizeof(char *) * evt_num);
2456 if (!evt_list)
2457 goto out_enomem;
2458 }
2459
2460 for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
2461 for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
2462
2463 if (!perf_evsel__is_cache_op_valid(type, op))
2464 continue;
2465
2466 for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
2467 __perf_evsel__hw_cache_type_op_res_name(type, op, i,
2468 name, sizeof(name));
2469 if (event_glob != NULL && !strglobmatch(name, event_glob))
2470 continue;
2471
2472 if (!is_event_supported(PERF_TYPE_HW_CACHE,
2473 type | (op << 8) | (i << 16)))
2474 continue;
2475
2476 if (!evt_num_known) {
2477 evt_num++;
2478 continue;
2479 }
2480
2481 evt_list[evt_i] = strdup(name);
2482 if (evt_list[evt_i] == NULL)
2483 goto out_enomem;
2484 evt_i++;
2485 }
2486 }
2487 }
2488
2489 if (!evt_num_known) {
2490 evt_num_known = true;
2491 goto restart;
2492 }
2493 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2494 evt_i = 0;
2495 while (evt_i < evt_num) {
2496 if (name_only) {
2497 printf("%s ", evt_list[evt_i++]);
2498 continue;
2499 }
2500 printf(" %-50s [%s]\n", evt_list[evt_i++],
2501 event_type_descriptors[PERF_TYPE_HW_CACHE]);
2502 }
2503 if (evt_num && pager_in_use())
2504 printf("\n");
2505
2506 out_free:
2507 evt_num = evt_i;
2508 for (evt_i = 0; evt_i < evt_num; evt_i++)
2509 zfree(&evt_list[evt_i]);
2510 zfree(&evt_list);
2511 return evt_num;
2512
2513 out_enomem:
2514 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[PERF_TYPE_HW_CACHE]);
2515 if (evt_list)
2516 goto out_free;
2517 return evt_num;
2518 }
2519
2520 static void print_tool_event(const char *name, const char *event_glob,
2521 bool name_only)
2522 {
2523 if (event_glob && !strglobmatch(name, event_glob))
2524 return;
2525 if (name_only)
2526 printf("%s ", name);
2527 else
2528 printf(" %-50s [%s]\n", name, "Tool event");
2529
2530 }
2531
2532 void print_tool_events(const char *event_glob, bool name_only)
2533 {
2534 print_tool_event("duration_time", event_glob, name_only);
2535 if (pager_in_use())
2536 printf("\n");
2537 }
2538
2539 void print_symbol_events(const char *event_glob, unsigned type,
2540 struct event_symbol *syms, unsigned max,
2541 bool name_only)
2542 {
2543 unsigned int i, evt_i = 0, evt_num = 0;
2544 char name[MAX_NAME_LEN];
2545 char **evt_list = NULL;
2546 bool evt_num_known = false;
2547
2548 restart:
2549 if (evt_num_known) {
2550 evt_list = zalloc(sizeof(char *) * evt_num);
2551 if (!evt_list)
2552 goto out_enomem;
2553 syms -= max;
2554 }
2555
2556 for (i = 0; i < max; i++, syms++) {
2557
2558 if (event_glob != NULL && syms->symbol != NULL &&
2559 !(strglobmatch(syms->symbol, event_glob) ||
2560 (syms->alias && strglobmatch(syms->alias, event_glob))))
2561 continue;
2562
2563 if (!is_event_supported(type, i))
2564 continue;
2565
2566 if (!evt_num_known) {
2567 evt_num++;
2568 continue;
2569 }
2570
2571 if (!name_only && strlen(syms->alias))
2572 snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
2573 else
2574 strlcpy(name, syms->symbol, MAX_NAME_LEN);
2575
2576 evt_list[evt_i] = strdup(name);
2577 if (evt_list[evt_i] == NULL)
2578 goto out_enomem;
2579 evt_i++;
2580 }
2581
2582 if (!evt_num_known) {
2583 evt_num_known = true;
2584 goto restart;
2585 }
2586 qsort(evt_list, evt_num, sizeof(char *), cmp_string);
2587 evt_i = 0;
2588 while (evt_i < evt_num) {
2589 if (name_only) {
2590 printf("%s ", evt_list[evt_i++]);
2591 continue;
2592 }
2593 printf(" %-50s [%s]\n", evt_list[evt_i++], event_type_descriptors[type]);
2594 }
2595 if (evt_num && pager_in_use())
2596 printf("\n");
2597
2598 out_free:
2599 evt_num = evt_i;
2600 for (evt_i = 0; evt_i < evt_num; evt_i++)
2601 zfree(&evt_list[evt_i]);
2602 zfree(&evt_list);
2603 return;
2604
2605 out_enomem:
2606 printf("FATAL: not enough memory to print %s\n", event_type_descriptors[type]);
2607 if (evt_list)
2608 goto out_free;
2609 }
2610
2611
2612
2613
2614 void print_events(const char *event_glob, bool name_only, bool quiet_flag,
2615 bool long_desc, bool details_flag)
2616 {
2617 print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
2618 event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
2619
2620 print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
2621 event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
2622 print_tool_events(event_glob, name_only);
2623
2624 print_hwcache_events(event_glob, name_only);
2625
2626 print_pmu_events(event_glob, name_only, quiet_flag, long_desc,
2627 details_flag);
2628
2629 if (event_glob != NULL)
2630 return;
2631
2632 if (!name_only) {
2633 printf(" %-50s [%s]\n",
2634 "rNNN",
2635 event_type_descriptors[PERF_TYPE_RAW]);
2636 printf(" %-50s [%s]\n",
2637 "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
2638 event_type_descriptors[PERF_TYPE_RAW]);
2639 if (pager_in_use())
2640 printf(" (see 'man perf-list' on how to encode it)\n\n");
2641
2642 printf(" %-50s [%s]\n",
2643 "mem:<addr>[/len][:access]",
2644 event_type_descriptors[PERF_TYPE_BREAKPOINT]);
2645 if (pager_in_use())
2646 printf("\n");
2647 }
2648
2649 print_tracepoint_events(NULL, NULL, name_only);
2650
2651 print_sdt_events(NULL, NULL, name_only);
2652
2653 metricgroup__print(true, true, NULL, name_only, details_flag);
2654 }
2655
2656 int parse_events__is_hardcoded_term(struct parse_events_term *term)
2657 {
2658 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;
2659 }
2660
2661 static int new_term(struct parse_events_term **_term,
2662 struct parse_events_term *temp,
2663 char *str, u64 num)
2664 {
2665 struct parse_events_term *term;
2666
2667 term = malloc(sizeof(*term));
2668 if (!term)
2669 return -ENOMEM;
2670
2671 *term = *temp;
2672 INIT_LIST_HEAD(&term->list);
2673 term->weak = false;
2674
2675 switch (term->type_val) {
2676 case PARSE_EVENTS__TERM_TYPE_NUM:
2677 term->val.num = num;
2678 break;
2679 case PARSE_EVENTS__TERM_TYPE_STR:
2680 term->val.str = str;
2681 break;
2682 default:
2683 free(term);
2684 return -EINVAL;
2685 }
2686
2687 *_term = term;
2688 return 0;
2689 }
2690
2691 int parse_events_term__num(struct parse_events_term **term,
2692 int type_term, char *config, u64 num,
2693 bool no_value,
2694 void *loc_term_, void *loc_val_)
2695 {
2696 YYLTYPE *loc_term = loc_term_;
2697 YYLTYPE *loc_val = loc_val_;
2698
2699 struct parse_events_term temp = {
2700 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
2701 .type_term = type_term,
2702 .config = config,
2703 .no_value = no_value,
2704 .err_term = loc_term ? loc_term->first_column : 0,
2705 .err_val = loc_val ? loc_val->first_column : 0,
2706 };
2707
2708 return new_term(term, &temp, NULL, num);
2709 }
2710
2711 int parse_events_term__str(struct parse_events_term **term,
2712 int type_term, char *config, char *str,
2713 void *loc_term_, void *loc_val_)
2714 {
2715 YYLTYPE *loc_term = loc_term_;
2716 YYLTYPE *loc_val = loc_val_;
2717
2718 struct parse_events_term temp = {
2719 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2720 .type_term = type_term,
2721 .config = config,
2722 .err_term = loc_term ? loc_term->first_column : 0,
2723 .err_val = loc_val ? loc_val->first_column : 0,
2724 };
2725
2726 return new_term(term, &temp, str, 0);
2727 }
2728
2729 int parse_events_term__sym_hw(struct parse_events_term **term,
2730 char *config, unsigned idx)
2731 {
2732 struct event_symbol *sym;
2733 struct parse_events_term temp = {
2734 .type_val = PARSE_EVENTS__TERM_TYPE_STR,
2735 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
2736 .config = config ?: (char *) "event",
2737 };
2738
2739 BUG_ON(idx >= PERF_COUNT_HW_MAX);
2740 sym = &event_symbols_hw[idx];
2741
2742 return new_term(term, &temp, (char *) sym->symbol, 0);
2743 }
2744
2745 int parse_events_term__clone(struct parse_events_term **new,
2746 struct parse_events_term *term)
2747 {
2748 struct parse_events_term temp = {
2749 .type_val = term->type_val,
2750 .type_term = term->type_term,
2751 .config = term->config,
2752 .err_term = term->err_term,
2753 .err_val = term->err_val,
2754 };
2755
2756 return new_term(new, &temp, term->val.str, term->val.num);
2757 }
2758
2759 int parse_events_copy_term_list(struct list_head *old,
2760 struct list_head **new)
2761 {
2762 struct parse_events_term *term, *n;
2763 int ret;
2764
2765 if (!old) {
2766 *new = NULL;
2767 return 0;
2768 }
2769
2770 *new = malloc(sizeof(struct list_head));
2771 if (!*new)
2772 return -ENOMEM;
2773 INIT_LIST_HEAD(*new);
2774
2775 list_for_each_entry (term, old, list) {
2776 ret = parse_events_term__clone(&n, term);
2777 if (ret)
2778 return ret;
2779 list_add_tail(&n->list, *new);
2780 }
2781 return 0;
2782 }
2783
2784 void parse_events_terms__purge(struct list_head *terms)
2785 {
2786 struct parse_events_term *term, *h;
2787
2788 list_for_each_entry_safe(term, h, terms, list) {
2789 if (term->array.nr_ranges)
2790 zfree(&term->array.ranges);
2791 list_del_init(&term->list);
2792 free(term);
2793 }
2794 }
2795
2796 void parse_events_terms__delete(struct list_head *terms)
2797 {
2798 if (!terms)
2799 return;
2800 parse_events_terms__purge(terms);
2801 free(terms);
2802 }
2803
2804 void parse_events__clear_array(struct parse_events_array *a)
2805 {
2806 zfree(&a->ranges);
2807 }
2808
2809 void parse_events_evlist_error(struct parse_events_state *parse_state,
2810 int idx, const char *str)
2811 {
2812 struct parse_events_error *err = parse_state->error;
2813
2814 if (!err)
2815 return;
2816 err->idx = idx;
2817 err->str = strdup(str);
2818 WARN_ONCE(!err->str, "WARNING: failed to allocate error string");
2819 }
2820
2821 static void config_terms_list(char *buf, size_t buf_sz)
2822 {
2823 int i;
2824 bool first = true;
2825
2826 buf[0] = '\0';
2827 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {
2828 const char *name = config_term_names[i];
2829
2830 if (!config_term_avail(i, NULL))
2831 continue;
2832 if (!name)
2833 continue;
2834 if (name[0] == '<')
2835 continue;
2836
2837 if (strlen(buf) + strlen(name) + 2 >= buf_sz)
2838 return;
2839
2840 if (!first)
2841 strcat(buf, ",");
2842 else
2843 first = false;
2844 strcat(buf, name);
2845 }
2846 }
2847
2848
2849
2850
2851
2852 char *parse_events_formats_error_string(char *additional_terms)
2853 {
2854 char *str;
2855
2856 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
2857 (sizeof("no-overwrite") - 1)];
2858
2859 config_terms_list(static_terms, sizeof(static_terms));
2860
2861 if (additional_terms) {
2862 if (asprintf(&str, "valid terms: %s,%s",
2863 additional_terms, static_terms) < 0)
2864 goto fail;
2865 } else {
2866 if (asprintf(&str, "valid terms: %s", static_terms) < 0)
2867 goto fail;
2868 }
2869 return str;
2870
2871 fail:
2872 return NULL;
2873 }