Commit | Line | Data |
---|---|---|
cd82a32e JO |
1 | #include <linux/list.h> |
2 | #include <sys/types.h> | |
3 | #include <sys/stat.h> | |
4 | #include <unistd.h> | |
5 | #include <stdio.h> | |
6 | #include <dirent.h> | |
4299a549 | 7 | #include "fs.h" |
cd82a32e JO |
8 | #include "util.h" |
9 | #include "pmu.h" | |
10 | #include "parse-events.h" | |
7ae92e74 | 11 | #include "cpumap.h" |
cd82a32e | 12 | |
ab1bf653 ACM |
13 | struct perf_pmu_alias { |
14 | char *name; | |
15 | struct list_head terms; | |
16 | struct list_head list; | |
17 | }; | |
18 | ||
19 | struct perf_pmu_format { | |
20 | char *name; | |
21 | int value; | |
22 | DECLARE_BITMAP(bits, PERF_PMU_FORMAT_BITS); | |
23 | struct list_head list; | |
24 | }; | |
25 | ||
50a9667c RR |
26 | #define EVENT_SOURCE_DEVICE_PATH "/bus/event_source/devices/" |
27 | ||
cd82a32e JO |
28 | int perf_pmu_parse(struct list_head *list, char *name); |
29 | extern FILE *perf_pmu_in; | |
30 | ||
31 | static LIST_HEAD(pmus); | |
32 | ||
33 | /* | |
34 | * Parse & process all the sysfs attributes located under | |
35 | * the directory specified in 'dir' parameter. | |
36 | */ | |
cff7f956 | 37 | int perf_pmu__format_parse(char *dir, struct list_head *head) |
cd82a32e JO |
38 | { |
39 | struct dirent *evt_ent; | |
40 | DIR *format_dir; | |
41 | int ret = 0; | |
42 | ||
43 | format_dir = opendir(dir); | |
44 | if (!format_dir) | |
45 | return -EINVAL; | |
46 | ||
47 | while (!ret && (evt_ent = readdir(format_dir))) { | |
48 | char path[PATH_MAX]; | |
49 | char *name = evt_ent->d_name; | |
50 | FILE *file; | |
51 | ||
52 | if (!strcmp(name, ".") || !strcmp(name, "..")) | |
53 | continue; | |
54 | ||
55 | snprintf(path, PATH_MAX, "%s/%s", dir, name); | |
56 | ||
57 | ret = -EINVAL; | |
58 | file = fopen(path, "r"); | |
59 | if (!file) | |
60 | break; | |
61 | ||
62 | perf_pmu_in = file; | |
63 | ret = perf_pmu_parse(head, name); | |
64 | fclose(file); | |
65 | } | |
66 | ||
67 | closedir(format_dir); | |
68 | return ret; | |
69 | } | |
70 | ||
71 | /* | |
72 | * Reading/parsing the default pmu format definition, which should be | |
73 | * located at: | |
74 | * /sys/bus/event_source/devices/<dev>/format as sysfs group attributes. | |
75 | */ | |
b6b96fb4 | 76 | static int pmu_format(const char *name, struct list_head *format) |
cd82a32e JO |
77 | { |
78 | struct stat st; | |
79 | char path[PATH_MAX]; | |
cf38fada | 80 | const char *sysfs = sysfs__mountpoint(); |
cd82a32e | 81 | |
cd82a32e JO |
82 | if (!sysfs) |
83 | return -1; | |
84 | ||
85 | snprintf(path, PATH_MAX, | |
50a9667c | 86 | "%s" EVENT_SOURCE_DEVICE_PATH "%s/format", sysfs, name); |
cd82a32e JO |
87 | |
88 | if (stat(path, &st) < 0) | |
9bc8f9fe | 89 | return 0; /* no error if format does not exist */ |
cd82a32e | 90 | |
cff7f956 | 91 | if (perf_pmu__format_parse(path, format)) |
cd82a32e JO |
92 | return -1; |
93 | ||
94 | return 0; | |
95 | } | |
96 | ||
a6146d50 ZY |
97 | static int perf_pmu__new_alias(struct list_head *list, char *name, FILE *file) |
98 | { | |
5c6ccc37 | 99 | struct perf_pmu_alias *alias; |
a6146d50 ZY |
100 | char buf[256]; |
101 | int ret; | |
102 | ||
103 | ret = fread(buf, 1, sizeof(buf), file); | |
104 | if (ret == 0) | |
105 | return -EINVAL; | |
106 | buf[ret] = 0; | |
107 | ||
108 | alias = malloc(sizeof(*alias)); | |
109 | if (!alias) | |
110 | return -ENOMEM; | |
111 | ||
112 | INIT_LIST_HEAD(&alias->terms); | |
113 | ret = parse_events_terms(&alias->terms, buf); | |
114 | if (ret) { | |
115 | free(alias); | |
116 | return ret; | |
117 | } | |
118 | ||
119 | alias->name = strdup(name); | |
120 | list_add_tail(&alias->list, list); | |
121 | return 0; | |
122 | } | |
123 | ||
124 | /* | |
125 | * Process all the sysfs attributes located under the directory | |
126 | * specified in 'dir' parameter. | |
127 | */ | |
128 | static int pmu_aliases_parse(char *dir, struct list_head *head) | |
129 | { | |
130 | struct dirent *evt_ent; | |
131 | DIR *event_dir; | |
132 | int ret = 0; | |
133 | ||
134 | event_dir = opendir(dir); | |
135 | if (!event_dir) | |
136 | return -EINVAL; | |
137 | ||
138 | while (!ret && (evt_ent = readdir(event_dir))) { | |
139 | char path[PATH_MAX]; | |
140 | char *name = evt_ent->d_name; | |
141 | FILE *file; | |
142 | ||
143 | if (!strcmp(name, ".") || !strcmp(name, "..")) | |
144 | continue; | |
145 | ||
146 | snprintf(path, PATH_MAX, "%s/%s", dir, name); | |
147 | ||
148 | ret = -EINVAL; | |
149 | file = fopen(path, "r"); | |
150 | if (!file) | |
151 | break; | |
152 | ret = perf_pmu__new_alias(head, name, file); | |
153 | fclose(file); | |
154 | } | |
155 | ||
156 | closedir(event_dir); | |
157 | return ret; | |
158 | } | |
159 | ||
160 | /* | |
161 | * Reading the pmu event aliases definition, which should be located at: | |
162 | * /sys/bus/event_source/devices/<dev>/events as sysfs group attributes. | |
163 | */ | |
b6b96fb4 | 164 | static int pmu_aliases(const char *name, struct list_head *head) |
a6146d50 ZY |
165 | { |
166 | struct stat st; | |
167 | char path[PATH_MAX]; | |
cf38fada | 168 | const char *sysfs = sysfs__mountpoint(); |
a6146d50 | 169 | |
a6146d50 ZY |
170 | if (!sysfs) |
171 | return -1; | |
172 | ||
173 | snprintf(path, PATH_MAX, | |
174 | "%s/bus/event_source/devices/%s/events", sysfs, name); | |
175 | ||
176 | if (stat(path, &st) < 0) | |
3fded963 | 177 | return 0; /* no error if 'events' does not exist */ |
a6146d50 ZY |
178 | |
179 | if (pmu_aliases_parse(path, head)) | |
180 | return -1; | |
181 | ||
182 | return 0; | |
183 | } | |
184 | ||
5c6ccc37 | 185 | static int pmu_alias_terms(struct perf_pmu_alias *alias, |
a6146d50 ZY |
186 | struct list_head *terms) |
187 | { | |
6cee6cd3 | 188 | struct parse_events_term *term, *clone; |
a6146d50 ZY |
189 | LIST_HEAD(list); |
190 | int ret; | |
191 | ||
192 | list_for_each_entry(term, &alias->terms, list) { | |
6cee6cd3 | 193 | ret = parse_events_term__clone(&clone, term); |
a6146d50 ZY |
194 | if (ret) { |
195 | parse_events__free_terms(&list); | |
196 | return ret; | |
197 | } | |
198 | list_add_tail(&clone->list, &list); | |
199 | } | |
200 | list_splice(&list, terms); | |
201 | return 0; | |
202 | } | |
203 | ||
cd82a32e JO |
204 | /* |
205 | * Reading/parsing the default pmu type value, which should be | |
206 | * located at: | |
207 | * /sys/bus/event_source/devices/<dev>/type as sysfs attribute. | |
208 | */ | |
b6b96fb4 | 209 | static int pmu_type(const char *name, __u32 *type) |
cd82a32e JO |
210 | { |
211 | struct stat st; | |
212 | char path[PATH_MAX]; | |
cd82a32e JO |
213 | FILE *file; |
214 | int ret = 0; | |
cf38fada | 215 | const char *sysfs = sysfs__mountpoint(); |
cd82a32e | 216 | |
cd82a32e JO |
217 | if (!sysfs) |
218 | return -1; | |
219 | ||
220 | snprintf(path, PATH_MAX, | |
50a9667c | 221 | "%s" EVENT_SOURCE_DEVICE_PATH "%s/type", sysfs, name); |
cd82a32e JO |
222 | |
223 | if (stat(path, &st) < 0) | |
224 | return -1; | |
225 | ||
226 | file = fopen(path, "r"); | |
227 | if (!file) | |
228 | return -EINVAL; | |
229 | ||
230 | if (1 != fscanf(file, "%u", type)) | |
231 | ret = -1; | |
232 | ||
233 | fclose(file); | |
234 | return ret; | |
235 | } | |
236 | ||
50a9667c RR |
237 | /* Add all pmus in sysfs to pmu list: */ |
238 | static void pmu_read_sysfs(void) | |
239 | { | |
240 | char path[PATH_MAX]; | |
50a9667c RR |
241 | DIR *dir; |
242 | struct dirent *dent; | |
cf38fada | 243 | const char *sysfs = sysfs__mountpoint(); |
50a9667c | 244 | |
50a9667c RR |
245 | if (!sysfs) |
246 | return; | |
247 | ||
248 | snprintf(path, PATH_MAX, | |
249 | "%s" EVENT_SOURCE_DEVICE_PATH, sysfs); | |
250 | ||
251 | dir = opendir(path); | |
252 | if (!dir) | |
253 | return; | |
254 | ||
255 | while ((dent = readdir(dir))) { | |
256 | if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, "..")) | |
257 | continue; | |
258 | /* add to static LIST_HEAD(pmus): */ | |
259 | perf_pmu__find(dent->d_name); | |
260 | } | |
261 | ||
262 | closedir(dir); | |
263 | } | |
264 | ||
b6b96fb4 | 265 | static struct cpu_map *pmu_cpumask(const char *name) |
7ae92e74 YZ |
266 | { |
267 | struct stat st; | |
268 | char path[PATH_MAX]; | |
7ae92e74 YZ |
269 | FILE *file; |
270 | struct cpu_map *cpus; | |
cf38fada | 271 | const char *sysfs = sysfs__mountpoint(); |
7ae92e74 | 272 | |
7ae92e74 YZ |
273 | if (!sysfs) |
274 | return NULL; | |
275 | ||
276 | snprintf(path, PATH_MAX, | |
277 | "%s/bus/event_source/devices/%s/cpumask", sysfs, name); | |
278 | ||
279 | if (stat(path, &st) < 0) | |
280 | return NULL; | |
281 | ||
282 | file = fopen(path, "r"); | |
283 | if (!file) | |
284 | return NULL; | |
285 | ||
286 | cpus = cpu_map__read(file); | |
287 | fclose(file); | |
288 | return cpus; | |
289 | } | |
290 | ||
b6b96fb4 | 291 | static struct perf_pmu *pmu_lookup(const char *name) |
cd82a32e JO |
292 | { |
293 | struct perf_pmu *pmu; | |
294 | LIST_HEAD(format); | |
a6146d50 | 295 | LIST_HEAD(aliases); |
cd82a32e JO |
296 | __u32 type; |
297 | ||
298 | /* | |
299 | * The pmu data we store & need consists of the pmu | |
300 | * type value and format definitions. Load both right | |
301 | * now. | |
302 | */ | |
303 | if (pmu_format(name, &format)) | |
304 | return NULL; | |
305 | ||
3fded963 JO |
306 | if (pmu_aliases(name, &aliases)) |
307 | return NULL; | |
308 | ||
cd82a32e JO |
309 | if (pmu_type(name, &type)) |
310 | return NULL; | |
311 | ||
312 | pmu = zalloc(sizeof(*pmu)); | |
313 | if (!pmu) | |
314 | return NULL; | |
315 | ||
7ae92e74 YZ |
316 | pmu->cpus = pmu_cpumask(name); |
317 | ||
cd82a32e | 318 | INIT_LIST_HEAD(&pmu->format); |
a6146d50 | 319 | INIT_LIST_HEAD(&pmu->aliases); |
cd82a32e | 320 | list_splice(&format, &pmu->format); |
a6146d50 | 321 | list_splice(&aliases, &pmu->aliases); |
cd82a32e JO |
322 | pmu->name = strdup(name); |
323 | pmu->type = type; | |
9bc8f9fe | 324 | list_add_tail(&pmu->list, &pmus); |
cd82a32e JO |
325 | return pmu; |
326 | } | |
327 | ||
b6b96fb4 | 328 | static struct perf_pmu *pmu_find(const char *name) |
cd82a32e JO |
329 | { |
330 | struct perf_pmu *pmu; | |
331 | ||
332 | list_for_each_entry(pmu, &pmus, list) | |
333 | if (!strcmp(pmu->name, name)) | |
334 | return pmu; | |
335 | ||
336 | return NULL; | |
337 | } | |
338 | ||
50a9667c RR |
339 | struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu) |
340 | { | |
341 | /* | |
342 | * pmu iterator: If pmu is NULL, we start at the begin, | |
343 | * otherwise return the next pmu. Returns NULL on end. | |
344 | */ | |
345 | if (!pmu) { | |
346 | pmu_read_sysfs(); | |
347 | pmu = list_prepare_entry(pmu, &pmus, list); | |
348 | } | |
349 | list_for_each_entry_continue(pmu, &pmus, list) | |
350 | return pmu; | |
351 | return NULL; | |
352 | } | |
353 | ||
b6b96fb4 | 354 | struct perf_pmu *perf_pmu__find(const char *name) |
cd82a32e JO |
355 | { |
356 | struct perf_pmu *pmu; | |
357 | ||
358 | /* | |
359 | * Once PMU is loaded it stays in the list, | |
360 | * so we keep us from multiple reading/parsing | |
361 | * the pmu format definitions. | |
362 | */ | |
363 | pmu = pmu_find(name); | |
364 | if (pmu) | |
365 | return pmu; | |
366 | ||
367 | return pmu_lookup(name); | |
368 | } | |
369 | ||
5c6ccc37 | 370 | static struct perf_pmu_format * |
cd82a32e JO |
371 | pmu_find_format(struct list_head *formats, char *name) |
372 | { | |
5c6ccc37 | 373 | struct perf_pmu_format *format; |
cd82a32e JO |
374 | |
375 | list_for_each_entry(format, formats, list) | |
376 | if (!strcmp(format->name, name)) | |
377 | return format; | |
378 | ||
379 | return NULL; | |
380 | } | |
381 | ||
382 | /* | |
383 | * Returns value based on the format definition (format parameter) | |
384 | * and unformated value (value parameter). | |
385 | * | |
386 | * TODO maybe optimize a little ;) | |
387 | */ | |
388 | static __u64 pmu_format_value(unsigned long *format, __u64 value) | |
389 | { | |
390 | unsigned long fbit, vbit; | |
391 | __u64 v = 0; | |
392 | ||
393 | for (fbit = 0, vbit = 0; fbit < PERF_PMU_FORMAT_BITS; fbit++) { | |
394 | ||
395 | if (!test_bit(fbit, format)) | |
396 | continue; | |
397 | ||
398 | if (!(value & (1llu << vbit++))) | |
399 | continue; | |
400 | ||
401 | v |= (1llu << fbit); | |
402 | } | |
403 | ||
404 | return v; | |
405 | } | |
406 | ||
407 | /* | |
408 | * Setup one of config[12] attr members based on the | |
409 | * user input data - temr parameter. | |
410 | */ | |
411 | static int pmu_config_term(struct list_head *formats, | |
412 | struct perf_event_attr *attr, | |
6cee6cd3 | 413 | struct parse_events_term *term) |
cd82a32e | 414 | { |
5c6ccc37 | 415 | struct perf_pmu_format *format; |
cd82a32e JO |
416 | __u64 *vp; |
417 | ||
418 | /* | |
419 | * Support only for hardcoded and numnerial terms. | |
420 | * Hardcoded terms should be already in, so nothing | |
421 | * to be done for them. | |
422 | */ | |
423 | if (parse_events__is_hardcoded_term(term)) | |
424 | return 0; | |
425 | ||
16fa7e82 | 426 | if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM) |
cd82a32e JO |
427 | return -EINVAL; |
428 | ||
429 | format = pmu_find_format(formats, term->config); | |
430 | if (!format) | |
431 | return -EINVAL; | |
432 | ||
433 | switch (format->value) { | |
434 | case PERF_PMU_FORMAT_VALUE_CONFIG: | |
435 | vp = &attr->config; | |
436 | break; | |
437 | case PERF_PMU_FORMAT_VALUE_CONFIG1: | |
438 | vp = &attr->config1; | |
439 | break; | |
440 | case PERF_PMU_FORMAT_VALUE_CONFIG2: | |
441 | vp = &attr->config2; | |
442 | break; | |
443 | default: | |
444 | return -EINVAL; | |
445 | } | |
446 | ||
16fa7e82 JO |
447 | /* |
448 | * XXX If we ever decide to go with string values for | |
449 | * non-hardcoded terms, here's the place to translate | |
450 | * them into value. | |
451 | */ | |
cd82a32e JO |
452 | *vp |= pmu_format_value(format->bits, term->val.num); |
453 | return 0; | |
454 | } | |
455 | ||
cff7f956 JO |
456 | int perf_pmu__config_terms(struct list_head *formats, |
457 | struct perf_event_attr *attr, | |
458 | struct list_head *head_terms) | |
cd82a32e | 459 | { |
6cee6cd3 | 460 | struct parse_events_term *term; |
cd82a32e | 461 | |
6b5fc39b | 462 | list_for_each_entry(term, head_terms, list) |
cd82a32e JO |
463 | if (pmu_config_term(formats, attr, term)) |
464 | return -EINVAL; | |
465 | ||
466 | return 0; | |
467 | } | |
468 | ||
469 | /* | |
470 | * Configures event's 'attr' parameter based on the: | |
471 | * 1) users input - specified in terms parameter | |
472 | * 2) pmu format definitions - specified by pmu parameter | |
473 | */ | |
474 | int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, | |
475 | struct list_head *head_terms) | |
476 | { | |
477 | attr->type = pmu->type; | |
cff7f956 | 478 | return perf_pmu__config_terms(&pmu->format, attr, head_terms); |
cd82a32e JO |
479 | } |
480 | ||
5c6ccc37 ACM |
481 | static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu, |
482 | struct parse_events_term *term) | |
a6146d50 | 483 | { |
5c6ccc37 | 484 | struct perf_pmu_alias *alias; |
a6146d50 ZY |
485 | char *name; |
486 | ||
487 | if (parse_events__is_hardcoded_term(term)) | |
488 | return NULL; | |
489 | ||
490 | if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { | |
491 | if (term->val.num != 1) | |
492 | return NULL; | |
493 | if (pmu_find_format(&pmu->format, term->config)) | |
494 | return NULL; | |
495 | name = term->config; | |
496 | } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { | |
497 | if (strcasecmp(term->config, "event")) | |
498 | return NULL; | |
499 | name = term->val.str; | |
500 | } else { | |
501 | return NULL; | |
502 | } | |
503 | ||
504 | list_for_each_entry(alias, &pmu->aliases, list) { | |
505 | if (!strcasecmp(alias->name, name)) | |
506 | return alias; | |
507 | } | |
508 | return NULL; | |
509 | } | |
510 | ||
511 | /* | |
512 | * Find alias in the terms list and replace it with the terms | |
513 | * defined for the alias | |
514 | */ | |
515 | int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms) | |
516 | { | |
6cee6cd3 | 517 | struct parse_events_term *term, *h; |
5c6ccc37 | 518 | struct perf_pmu_alias *alias; |
a6146d50 ZY |
519 | int ret; |
520 | ||
521 | list_for_each_entry_safe(term, h, head_terms, list) { | |
522 | alias = pmu_find_alias(pmu, term); | |
523 | if (!alias) | |
524 | continue; | |
525 | ret = pmu_alias_terms(alias, &term->list); | |
526 | if (ret) | |
527 | return ret; | |
528 | list_del(&term->list); | |
529 | free(term); | |
530 | } | |
531 | return 0; | |
532 | } | |
533 | ||
cd82a32e JO |
534 | int perf_pmu__new_format(struct list_head *list, char *name, |
535 | int config, unsigned long *bits) | |
536 | { | |
5c6ccc37 | 537 | struct perf_pmu_format *format; |
cd82a32e JO |
538 | |
539 | format = zalloc(sizeof(*format)); | |
540 | if (!format) | |
541 | return -ENOMEM; | |
542 | ||
543 | format->name = strdup(name); | |
544 | format->value = config; | |
545 | memcpy(format->bits, bits, sizeof(format->bits)); | |
546 | ||
547 | list_add_tail(&format->list, list); | |
548 | return 0; | |
549 | } | |
550 | ||
551 | void perf_pmu__set_format(unsigned long *bits, long from, long to) | |
552 | { | |
553 | long b; | |
554 | ||
555 | if (!to) | |
556 | to = from; | |
557 | ||
15268138 | 558 | memset(bits, 0, BITS_TO_BYTES(PERF_PMU_FORMAT_BITS)); |
cd82a32e JO |
559 | for (b = from; b <= to; b++) |
560 | set_bit(b, bits); | |
561 | } | |
dc098b35 AK |
562 | |
563 | static char *format_alias(char *buf, int len, struct perf_pmu *pmu, | |
564 | struct perf_pmu_alias *alias) | |
565 | { | |
566 | snprintf(buf, len, "%s/%s/", pmu->name, alias->name); | |
567 | return buf; | |
568 | } | |
569 | ||
570 | static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu, | |
571 | struct perf_pmu_alias *alias) | |
572 | { | |
573 | snprintf(buf, len, "%s OR %s/%s/", alias->name, pmu->name, alias->name); | |
574 | return buf; | |
575 | } | |
576 | ||
577 | static int cmp_string(const void *a, const void *b) | |
578 | { | |
579 | const char * const *as = a; | |
580 | const char * const *bs = b; | |
581 | return strcmp(*as, *bs); | |
582 | } | |
583 | ||
584 | void print_pmu_events(const char *event_glob, bool name_only) | |
585 | { | |
586 | struct perf_pmu *pmu; | |
587 | struct perf_pmu_alias *alias; | |
588 | char buf[1024]; | |
589 | int printed = 0; | |
590 | int len, j; | |
591 | char **aliases; | |
592 | ||
593 | pmu = NULL; | |
594 | len = 0; | |
595 | while ((pmu = perf_pmu__scan(pmu)) != NULL) | |
596 | list_for_each_entry(alias, &pmu->aliases, list) | |
597 | len++; | |
598 | aliases = malloc(sizeof(char *) * len); | |
599 | if (!aliases) | |
600 | return; | |
601 | pmu = NULL; | |
602 | j = 0; | |
603 | while ((pmu = perf_pmu__scan(pmu)) != NULL) | |
604 | list_for_each_entry(alias, &pmu->aliases, list) { | |
605 | char *name = format_alias(buf, sizeof(buf), pmu, alias); | |
606 | bool is_cpu = !strcmp(pmu->name, "cpu"); | |
607 | ||
608 | if (event_glob != NULL && | |
609 | !(strglobmatch(name, event_glob) || | |
610 | (!is_cpu && strglobmatch(alias->name, | |
611 | event_glob)))) | |
612 | continue; | |
613 | aliases[j] = name; | |
614 | if (is_cpu && !name_only) | |
615 | aliases[j] = format_alias_or(buf, sizeof(buf), | |
616 | pmu, alias); | |
617 | aliases[j] = strdup(aliases[j]); | |
618 | j++; | |
619 | } | |
620 | len = j; | |
621 | qsort(aliases, len, sizeof(char *), cmp_string); | |
622 | for (j = 0; j < len; j++) { | |
623 | if (name_only) { | |
624 | printf("%s ", aliases[j]); | |
625 | continue; | |
626 | } | |
627 | printf(" %-50s [Kernel PMU event]\n", aliases[j]); | |
628 | free(aliases[j]); | |
629 | printed++; | |
630 | } | |
631 | if (printed) | |
632 | printf("\n"); | |
633 | free(aliases); | |
634 | } | |
4cabc3d1 AK |
635 | |
636 | bool pmu_have_event(const char *pname, const char *name) | |
637 | { | |
638 | struct perf_pmu *pmu; | |
639 | struct perf_pmu_alias *alias; | |
640 | ||
641 | pmu = NULL; | |
642 | while ((pmu = perf_pmu__scan(pmu)) != NULL) { | |
643 | if (strcmp(pname, pmu->name)) | |
644 | continue; | |
645 | list_for_each_entry(alias, &pmu->aliases, list) | |
646 | if (!strcmp(alias->name, name)) | |
647 | return true; | |
648 | } | |
649 | return false; | |
650 | } |