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Commit | Line | Data |
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f8a95309 ACM |
1 | /* |
2 | * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> | |
3 | * | |
4 | * Parts came from builtin-{top,stat,record}.c, see those files for further | |
5 | * copyright notes. | |
6 | * | |
7 | * Released under the GPL v2. (and only v2, not any later version) | |
8 | */ | |
a8c9ae18 | 9 | #include "util.h" |
85c66be1 | 10 | #include <lk/debugfs.h> |
5c581041 | 11 | #include <poll.h> |
f8a95309 ACM |
12 | #include "cpumap.h" |
13 | #include "thread_map.h" | |
12864b31 | 14 | #include "target.h" |
361c99a6 ACM |
15 | #include "evlist.h" |
16 | #include "evsel.h" | |
e3e1a54f | 17 | #include "debug.h" |
35b9d88e | 18 | #include <unistd.h> |
361c99a6 | 19 | |
50d08e47 | 20 | #include "parse-events.h" |
994a1f78 | 21 | #include "parse-options.h" |
50d08e47 | 22 | |
f8a95309 ACM |
23 | #include <sys/mman.h> |
24 | ||
70db7533 ACM |
25 | #include <linux/bitops.h> |
26 | #include <linux/hash.h> | |
27 | ||
f8a95309 | 28 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
a91e5431 | 29 | #define SID(e, x, y) xyarray__entry(e->sample_id, x, y) |
f8a95309 | 30 | |
7e2ed097 ACM |
31 | void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus, |
32 | struct thread_map *threads) | |
ef1d1af2 ACM |
33 | { |
34 | int i; | |
35 | ||
36 | for (i = 0; i < PERF_EVLIST__HLIST_SIZE; ++i) | |
37 | INIT_HLIST_HEAD(&evlist->heads[i]); | |
38 | INIT_LIST_HEAD(&evlist->entries); | |
7e2ed097 | 39 | perf_evlist__set_maps(evlist, cpus, threads); |
35b9d88e | 40 | evlist->workload.pid = -1; |
ef1d1af2 ACM |
41 | } |
42 | ||
334fe7a3 | 43 | struct perf_evlist *perf_evlist__new(void) |
361c99a6 ACM |
44 | { |
45 | struct perf_evlist *evlist = zalloc(sizeof(*evlist)); | |
46 | ||
ef1d1af2 | 47 | if (evlist != NULL) |
334fe7a3 | 48 | perf_evlist__init(evlist, NULL, NULL); |
361c99a6 ACM |
49 | |
50 | return evlist; | |
51 | } | |
52 | ||
75562573 AH |
53 | /** |
54 | * perf_evlist__set_id_pos - set the positions of event ids. | |
55 | * @evlist: selected event list | |
56 | * | |
57 | * Events with compatible sample types all have the same id_pos | |
58 | * and is_pos. For convenience, put a copy on evlist. | |
59 | */ | |
60 | void perf_evlist__set_id_pos(struct perf_evlist *evlist) | |
61 | { | |
62 | struct perf_evsel *first = perf_evlist__first(evlist); | |
63 | ||
64 | evlist->id_pos = first->id_pos; | |
65 | evlist->is_pos = first->is_pos; | |
66 | } | |
67 | ||
733cd2fe AH |
68 | static void perf_evlist__update_id_pos(struct perf_evlist *evlist) |
69 | { | |
70 | struct perf_evsel *evsel; | |
71 | ||
72 | list_for_each_entry(evsel, &evlist->entries, node) | |
73 | perf_evsel__calc_id_pos(evsel); | |
74 | ||
75 | perf_evlist__set_id_pos(evlist); | |
76 | } | |
77 | ||
361c99a6 ACM |
78 | static void perf_evlist__purge(struct perf_evlist *evlist) |
79 | { | |
80 | struct perf_evsel *pos, *n; | |
81 | ||
82 | list_for_each_entry_safe(pos, n, &evlist->entries, node) { | |
83 | list_del_init(&pos->node); | |
84 | perf_evsel__delete(pos); | |
85 | } | |
86 | ||
87 | evlist->nr_entries = 0; | |
88 | } | |
89 | ||
ef1d1af2 | 90 | void perf_evlist__exit(struct perf_evlist *evlist) |
361c99a6 | 91 | { |
70db7533 | 92 | free(evlist->mmap); |
5c581041 | 93 | free(evlist->pollfd); |
ef1d1af2 ACM |
94 | evlist->mmap = NULL; |
95 | evlist->pollfd = NULL; | |
96 | } | |
97 | ||
98 | void perf_evlist__delete(struct perf_evlist *evlist) | |
99 | { | |
100 | perf_evlist__purge(evlist); | |
101 | perf_evlist__exit(evlist); | |
361c99a6 ACM |
102 | free(evlist); |
103 | } | |
104 | ||
105 | void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry) | |
106 | { | |
107 | list_add_tail(&entry->node, &evlist->entries); | |
75562573 AH |
108 | if (!evlist->nr_entries++) |
109 | perf_evlist__set_id_pos(evlist); | |
361c99a6 ACM |
110 | } |
111 | ||
0529bc1f JO |
112 | void perf_evlist__splice_list_tail(struct perf_evlist *evlist, |
113 | struct list_head *list, | |
114 | int nr_entries) | |
50d08e47 | 115 | { |
75562573 AH |
116 | bool set_id_pos = !evlist->nr_entries; |
117 | ||
50d08e47 ACM |
118 | list_splice_tail(list, &evlist->entries); |
119 | evlist->nr_entries += nr_entries; | |
75562573 AH |
120 | if (set_id_pos) |
121 | perf_evlist__set_id_pos(evlist); | |
50d08e47 ACM |
122 | } |
123 | ||
63dab225 ACM |
124 | void __perf_evlist__set_leader(struct list_head *list) |
125 | { | |
126 | struct perf_evsel *evsel, *leader; | |
127 | ||
128 | leader = list_entry(list->next, struct perf_evsel, node); | |
97f63e4a NK |
129 | evsel = list_entry(list->prev, struct perf_evsel, node); |
130 | ||
131 | leader->nr_members = evsel->idx - leader->idx + 1; | |
63dab225 ACM |
132 | |
133 | list_for_each_entry(evsel, list, node) { | |
74b2133d | 134 | evsel->leader = leader; |
63dab225 ACM |
135 | } |
136 | } | |
137 | ||
138 | void perf_evlist__set_leader(struct perf_evlist *evlist) | |
6a4bb04c | 139 | { |
97f63e4a NK |
140 | if (evlist->nr_entries) { |
141 | evlist->nr_groups = evlist->nr_entries > 1 ? 1 : 0; | |
63dab225 | 142 | __perf_evlist__set_leader(&evlist->entries); |
97f63e4a | 143 | } |
6a4bb04c JO |
144 | } |
145 | ||
361c99a6 ACM |
146 | int perf_evlist__add_default(struct perf_evlist *evlist) |
147 | { | |
148 | struct perf_event_attr attr = { | |
149 | .type = PERF_TYPE_HARDWARE, | |
150 | .config = PERF_COUNT_HW_CPU_CYCLES, | |
151 | }; | |
1aed2671 JR |
152 | struct perf_evsel *evsel; |
153 | ||
154 | event_attr_init(&attr); | |
361c99a6 | 155 | |
1aed2671 | 156 | evsel = perf_evsel__new(&attr, 0); |
361c99a6 | 157 | if (evsel == NULL) |
cc2d86b0 SE |
158 | goto error; |
159 | ||
160 | /* use strdup() because free(evsel) assumes name is allocated */ | |
161 | evsel->name = strdup("cycles"); | |
162 | if (!evsel->name) | |
163 | goto error_free; | |
361c99a6 ACM |
164 | |
165 | perf_evlist__add(evlist, evsel); | |
166 | return 0; | |
cc2d86b0 SE |
167 | error_free: |
168 | perf_evsel__delete(evsel); | |
169 | error: | |
170 | return -ENOMEM; | |
361c99a6 | 171 | } |
5c581041 | 172 | |
e60fc847 ACM |
173 | static int perf_evlist__add_attrs(struct perf_evlist *evlist, |
174 | struct perf_event_attr *attrs, size_t nr_attrs) | |
50d08e47 ACM |
175 | { |
176 | struct perf_evsel *evsel, *n; | |
177 | LIST_HEAD(head); | |
178 | size_t i; | |
179 | ||
180 | for (i = 0; i < nr_attrs; i++) { | |
181 | evsel = perf_evsel__new(attrs + i, evlist->nr_entries + i); | |
182 | if (evsel == NULL) | |
183 | goto out_delete_partial_list; | |
184 | list_add_tail(&evsel->node, &head); | |
185 | } | |
186 | ||
187 | perf_evlist__splice_list_tail(evlist, &head, nr_attrs); | |
188 | ||
189 | return 0; | |
190 | ||
191 | out_delete_partial_list: | |
192 | list_for_each_entry_safe(evsel, n, &head, node) | |
193 | perf_evsel__delete(evsel); | |
194 | return -1; | |
195 | } | |
196 | ||
79695e1b ACM |
197 | int __perf_evlist__add_default_attrs(struct perf_evlist *evlist, |
198 | struct perf_event_attr *attrs, size_t nr_attrs) | |
199 | { | |
200 | size_t i; | |
201 | ||
202 | for (i = 0; i < nr_attrs; i++) | |
203 | event_attr_init(attrs + i); | |
204 | ||
205 | return perf_evlist__add_attrs(evlist, attrs, nr_attrs); | |
206 | } | |
207 | ||
da378962 ACM |
208 | struct perf_evsel * |
209 | perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id) | |
ee29be62 ACM |
210 | { |
211 | struct perf_evsel *evsel; | |
212 | ||
213 | list_for_each_entry(evsel, &evlist->entries, node) { | |
214 | if (evsel->attr.type == PERF_TYPE_TRACEPOINT && | |
215 | (int)evsel->attr.config == id) | |
216 | return evsel; | |
217 | } | |
218 | ||
219 | return NULL; | |
220 | } | |
221 | ||
a2f2804a DA |
222 | struct perf_evsel * |
223 | perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist, | |
224 | const char *name) | |
225 | { | |
226 | struct perf_evsel *evsel; | |
227 | ||
228 | list_for_each_entry(evsel, &evlist->entries, node) { | |
229 | if ((evsel->attr.type == PERF_TYPE_TRACEPOINT) && | |
230 | (strcmp(evsel->name, name) == 0)) | |
231 | return evsel; | |
232 | } | |
233 | ||
234 | return NULL; | |
235 | } | |
236 | ||
39876e7d ACM |
237 | int perf_evlist__add_newtp(struct perf_evlist *evlist, |
238 | const char *sys, const char *name, void *handler) | |
239 | { | |
240 | struct perf_evsel *evsel; | |
241 | ||
242 | evsel = perf_evsel__newtp(sys, name, evlist->nr_entries); | |
243 | if (evsel == NULL) | |
244 | return -1; | |
245 | ||
246 | evsel->handler.func = handler; | |
247 | perf_evlist__add(evlist, evsel); | |
248 | return 0; | |
249 | } | |
250 | ||
4152ab37 ACM |
251 | void perf_evlist__disable(struct perf_evlist *evlist) |
252 | { | |
253 | int cpu, thread; | |
254 | struct perf_evsel *pos; | |
b3a319d5 NK |
255 | int nr_cpus = cpu_map__nr(evlist->cpus); |
256 | int nr_threads = thread_map__nr(evlist->threads); | |
4152ab37 | 257 | |
b3a319d5 | 258 | for (cpu = 0; cpu < nr_cpus; cpu++) { |
4152ab37 | 259 | list_for_each_entry(pos, &evlist->entries, node) { |
395c3070 | 260 | if (!perf_evsel__is_group_leader(pos) || !pos->fd) |
3fe4430d | 261 | continue; |
b3a319d5 | 262 | for (thread = 0; thread < nr_threads; thread++) |
55da8005 NK |
263 | ioctl(FD(pos, cpu, thread), |
264 | PERF_EVENT_IOC_DISABLE, 0); | |
4152ab37 ACM |
265 | } |
266 | } | |
267 | } | |
268 | ||
764e16a3 DA |
269 | void perf_evlist__enable(struct perf_evlist *evlist) |
270 | { | |
271 | int cpu, thread; | |
272 | struct perf_evsel *pos; | |
b3a319d5 NK |
273 | int nr_cpus = cpu_map__nr(evlist->cpus); |
274 | int nr_threads = thread_map__nr(evlist->threads); | |
764e16a3 | 275 | |
b3a319d5 | 276 | for (cpu = 0; cpu < nr_cpus; cpu++) { |
764e16a3 | 277 | list_for_each_entry(pos, &evlist->entries, node) { |
395c3070 | 278 | if (!perf_evsel__is_group_leader(pos) || !pos->fd) |
3fe4430d | 279 | continue; |
b3a319d5 | 280 | for (thread = 0; thread < nr_threads; thread++) |
55da8005 NK |
281 | ioctl(FD(pos, cpu, thread), |
282 | PERF_EVENT_IOC_ENABLE, 0); | |
764e16a3 DA |
283 | } |
284 | } | |
285 | } | |
286 | ||
395c3070 AH |
287 | int perf_evlist__disable_event(struct perf_evlist *evlist, |
288 | struct perf_evsel *evsel) | |
289 | { | |
290 | int cpu, thread, err; | |
291 | ||
292 | if (!evsel->fd) | |
293 | return 0; | |
294 | ||
295 | for (cpu = 0; cpu < evlist->cpus->nr; cpu++) { | |
296 | for (thread = 0; thread < evlist->threads->nr; thread++) { | |
297 | err = ioctl(FD(evsel, cpu, thread), | |
298 | PERF_EVENT_IOC_DISABLE, 0); | |
299 | if (err) | |
300 | return err; | |
301 | } | |
302 | } | |
303 | return 0; | |
304 | } | |
305 | ||
306 | int perf_evlist__enable_event(struct perf_evlist *evlist, | |
307 | struct perf_evsel *evsel) | |
308 | { | |
309 | int cpu, thread, err; | |
310 | ||
311 | if (!evsel->fd) | |
312 | return -EINVAL; | |
313 | ||
314 | for (cpu = 0; cpu < evlist->cpus->nr; cpu++) { | |
315 | for (thread = 0; thread < evlist->threads->nr; thread++) { | |
316 | err = ioctl(FD(evsel, cpu, thread), | |
317 | PERF_EVENT_IOC_ENABLE, 0); | |
318 | if (err) | |
319 | return err; | |
320 | } | |
321 | } | |
322 | return 0; | |
323 | } | |
324 | ||
806fb630 | 325 | static int perf_evlist__alloc_pollfd(struct perf_evlist *evlist) |
5c581041 | 326 | { |
b3a319d5 NK |
327 | int nr_cpus = cpu_map__nr(evlist->cpus); |
328 | int nr_threads = thread_map__nr(evlist->threads); | |
329 | int nfds = nr_cpus * nr_threads * evlist->nr_entries; | |
5c581041 ACM |
330 | evlist->pollfd = malloc(sizeof(struct pollfd) * nfds); |
331 | return evlist->pollfd != NULL ? 0 : -ENOMEM; | |
332 | } | |
70082dd9 ACM |
333 | |
334 | void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd) | |
335 | { | |
336 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
337 | evlist->pollfd[evlist->nr_fds].fd = fd; | |
338 | evlist->pollfd[evlist->nr_fds].events = POLLIN; | |
339 | evlist->nr_fds++; | |
340 | } | |
70db7533 | 341 | |
a91e5431 ACM |
342 | static void perf_evlist__id_hash(struct perf_evlist *evlist, |
343 | struct perf_evsel *evsel, | |
344 | int cpu, int thread, u64 id) | |
3d3b5e95 ACM |
345 | { |
346 | int hash; | |
347 | struct perf_sample_id *sid = SID(evsel, cpu, thread); | |
348 | ||
349 | sid->id = id; | |
350 | sid->evsel = evsel; | |
351 | hash = hash_64(sid->id, PERF_EVLIST__HLIST_BITS); | |
352 | hlist_add_head(&sid->node, &evlist->heads[hash]); | |
353 | } | |
354 | ||
a91e5431 ACM |
355 | void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel, |
356 | int cpu, int thread, u64 id) | |
357 | { | |
358 | perf_evlist__id_hash(evlist, evsel, cpu, thread, id); | |
359 | evsel->id[evsel->ids++] = id; | |
360 | } | |
361 | ||
362 | static int perf_evlist__id_add_fd(struct perf_evlist *evlist, | |
363 | struct perf_evsel *evsel, | |
364 | int cpu, int thread, int fd) | |
f8a95309 | 365 | { |
f8a95309 | 366 | u64 read_data[4] = { 0, }; |
3d3b5e95 | 367 | int id_idx = 1; /* The first entry is the counter value */ |
e2b5abe0 JO |
368 | u64 id; |
369 | int ret; | |
370 | ||
371 | ret = ioctl(fd, PERF_EVENT_IOC_ID, &id); | |
372 | if (!ret) | |
373 | goto add; | |
374 | ||
375 | if (errno != ENOTTY) | |
376 | return -1; | |
377 | ||
378 | /* Legacy way to get event id.. All hail to old kernels! */ | |
f8a95309 | 379 | |
c4861afe JO |
380 | /* |
381 | * This way does not work with group format read, so bail | |
382 | * out in that case. | |
383 | */ | |
384 | if (perf_evlist__read_format(evlist) & PERF_FORMAT_GROUP) | |
385 | return -1; | |
386 | ||
f8a95309 ACM |
387 | if (!(evsel->attr.read_format & PERF_FORMAT_ID) || |
388 | read(fd, &read_data, sizeof(read_data)) == -1) | |
389 | return -1; | |
390 | ||
391 | if (evsel->attr.read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) | |
392 | ++id_idx; | |
393 | if (evsel->attr.read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) | |
394 | ++id_idx; | |
395 | ||
e2b5abe0 JO |
396 | id = read_data[id_idx]; |
397 | ||
398 | add: | |
399 | perf_evlist__id_add(evlist, evsel, cpu, thread, id); | |
f8a95309 ACM |
400 | return 0; |
401 | } | |
402 | ||
932a3594 | 403 | struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id) |
70db7533 ACM |
404 | { |
405 | struct hlist_head *head; | |
70db7533 ACM |
406 | struct perf_sample_id *sid; |
407 | int hash; | |
408 | ||
70db7533 ACM |
409 | hash = hash_64(id, PERF_EVLIST__HLIST_BITS); |
410 | head = &evlist->heads[hash]; | |
411 | ||
b67bfe0d | 412 | hlist_for_each_entry(sid, head, node) |
70db7533 | 413 | if (sid->id == id) |
932a3594 JO |
414 | return sid; |
415 | ||
416 | return NULL; | |
417 | } | |
418 | ||
419 | struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id) | |
420 | { | |
421 | struct perf_sample_id *sid; | |
422 | ||
423 | if (evlist->nr_entries == 1) | |
424 | return perf_evlist__first(evlist); | |
425 | ||
426 | sid = perf_evlist__id2sid(evlist, id); | |
427 | if (sid) | |
428 | return sid->evsel; | |
30e68bcc NK |
429 | |
430 | if (!perf_evlist__sample_id_all(evlist)) | |
0c21f736 | 431 | return perf_evlist__first(evlist); |
30e68bcc | 432 | |
70db7533 ACM |
433 | return NULL; |
434 | } | |
04391deb | 435 | |
75562573 AH |
436 | static int perf_evlist__event2id(struct perf_evlist *evlist, |
437 | union perf_event *event, u64 *id) | |
438 | { | |
439 | const u64 *array = event->sample.array; | |
440 | ssize_t n; | |
441 | ||
442 | n = (event->header.size - sizeof(event->header)) >> 3; | |
443 | ||
444 | if (event->header.type == PERF_RECORD_SAMPLE) { | |
445 | if (evlist->id_pos >= n) | |
446 | return -1; | |
447 | *id = array[evlist->id_pos]; | |
448 | } else { | |
449 | if (evlist->is_pos > n) | |
450 | return -1; | |
451 | n -= evlist->is_pos; | |
452 | *id = array[n]; | |
453 | } | |
454 | return 0; | |
455 | } | |
456 | ||
457 | static struct perf_evsel *perf_evlist__event2evsel(struct perf_evlist *evlist, | |
458 | union perf_event *event) | |
459 | { | |
98be6966 | 460 | struct perf_evsel *first = perf_evlist__first(evlist); |
75562573 AH |
461 | struct hlist_head *head; |
462 | struct perf_sample_id *sid; | |
463 | int hash; | |
464 | u64 id; | |
465 | ||
466 | if (evlist->nr_entries == 1) | |
98be6966 AH |
467 | return first; |
468 | ||
469 | if (!first->attr.sample_id_all && | |
470 | event->header.type != PERF_RECORD_SAMPLE) | |
471 | return first; | |
75562573 AH |
472 | |
473 | if (perf_evlist__event2id(evlist, event, &id)) | |
474 | return NULL; | |
475 | ||
476 | /* Synthesized events have an id of zero */ | |
477 | if (!id) | |
98be6966 | 478 | return first; |
75562573 AH |
479 | |
480 | hash = hash_64(id, PERF_EVLIST__HLIST_BITS); | |
481 | head = &evlist->heads[hash]; | |
482 | ||
483 | hlist_for_each_entry(sid, head, node) { | |
484 | if (sid->id == id) | |
485 | return sid->evsel; | |
486 | } | |
487 | return NULL; | |
488 | } | |
489 | ||
aece948f | 490 | union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx) |
04391deb | 491 | { |
aece948f | 492 | struct perf_mmap *md = &evlist->mmap[idx]; |
04391deb ACM |
493 | unsigned int head = perf_mmap__read_head(md); |
494 | unsigned int old = md->prev; | |
495 | unsigned char *data = md->base + page_size; | |
8115d60c | 496 | union perf_event *event = NULL; |
04391deb | 497 | |
7bb41152 | 498 | if (evlist->overwrite) { |
04391deb | 499 | /* |
7bb41152 ACM |
500 | * If we're further behind than half the buffer, there's a chance |
501 | * the writer will bite our tail and mess up the samples under us. | |
502 | * | |
503 | * If we somehow ended up ahead of the head, we got messed up. | |
504 | * | |
505 | * In either case, truncate and restart at head. | |
04391deb | 506 | */ |
7bb41152 ACM |
507 | int diff = head - old; |
508 | if (diff > md->mask / 2 || diff < 0) { | |
509 | fprintf(stderr, "WARNING: failed to keep up with mmap data.\n"); | |
510 | ||
511 | /* | |
512 | * head points to a known good entry, start there. | |
513 | */ | |
514 | old = head; | |
515 | } | |
04391deb ACM |
516 | } |
517 | ||
518 | if (old != head) { | |
519 | size_t size; | |
520 | ||
8115d60c | 521 | event = (union perf_event *)&data[old & md->mask]; |
04391deb ACM |
522 | size = event->header.size; |
523 | ||
524 | /* | |
525 | * Event straddles the mmap boundary -- header should always | |
526 | * be inside due to u64 alignment of output. | |
527 | */ | |
528 | if ((old & md->mask) + size != ((old + size) & md->mask)) { | |
529 | unsigned int offset = old; | |
530 | unsigned int len = min(sizeof(*event), size), cpy; | |
0479b8b9 | 531 | void *dst = &md->event_copy; |
04391deb ACM |
532 | |
533 | do { | |
534 | cpy = min(md->mask + 1 - (offset & md->mask), len); | |
535 | memcpy(dst, &data[offset & md->mask], cpy); | |
536 | offset += cpy; | |
537 | dst += cpy; | |
538 | len -= cpy; | |
539 | } while (len); | |
540 | ||
0479b8b9 | 541 | event = &md->event_copy; |
04391deb ACM |
542 | } |
543 | ||
544 | old += size; | |
545 | } | |
546 | ||
547 | md->prev = old; | |
7bb41152 ACM |
548 | |
549 | if (!evlist->overwrite) | |
550 | perf_mmap__write_tail(md, old); | |
551 | ||
04391deb ACM |
552 | return event; |
553 | } | |
f8a95309 | 554 | |
93edcbd9 AH |
555 | static void __perf_evlist__munmap(struct perf_evlist *evlist, int idx) |
556 | { | |
557 | if (evlist->mmap[idx].base != NULL) { | |
558 | munmap(evlist->mmap[idx].base, evlist->mmap_len); | |
559 | evlist->mmap[idx].base = NULL; | |
560 | } | |
561 | } | |
562 | ||
7e2ed097 | 563 | void perf_evlist__munmap(struct perf_evlist *evlist) |
f8a95309 | 564 | { |
aece948f | 565 | int i; |
f8a95309 | 566 | |
93edcbd9 AH |
567 | for (i = 0; i < evlist->nr_mmaps; i++) |
568 | __perf_evlist__munmap(evlist, i); | |
aece948f ACM |
569 | |
570 | free(evlist->mmap); | |
571 | evlist->mmap = NULL; | |
f8a95309 ACM |
572 | } |
573 | ||
806fb630 | 574 | static int perf_evlist__alloc_mmap(struct perf_evlist *evlist) |
f8a95309 | 575 | { |
a14bb7a6 | 576 | evlist->nr_mmaps = cpu_map__nr(evlist->cpus); |
ec1e7e43 | 577 | if (cpu_map__empty(evlist->cpus)) |
b3a319d5 | 578 | evlist->nr_mmaps = thread_map__nr(evlist->threads); |
aece948f | 579 | evlist->mmap = zalloc(evlist->nr_mmaps * sizeof(struct perf_mmap)); |
f8a95309 ACM |
580 | return evlist->mmap != NULL ? 0 : -ENOMEM; |
581 | } | |
582 | ||
bccdaba0 | 583 | static int __perf_evlist__mmap(struct perf_evlist *evlist, |
aece948f | 584 | int idx, int prot, int mask, int fd) |
f8a95309 | 585 | { |
aece948f ACM |
586 | evlist->mmap[idx].prev = 0; |
587 | evlist->mmap[idx].mask = mask; | |
588 | evlist->mmap[idx].base = mmap(NULL, evlist->mmap_len, prot, | |
f8a95309 | 589 | MAP_SHARED, fd, 0); |
301b195d NE |
590 | if (evlist->mmap[idx].base == MAP_FAILED) { |
591 | evlist->mmap[idx].base = NULL; | |
f8a95309 | 592 | return -1; |
301b195d | 593 | } |
f8a95309 ACM |
594 | |
595 | perf_evlist__add_pollfd(evlist, fd); | |
596 | return 0; | |
597 | } | |
598 | ||
aece948f ACM |
599 | static int perf_evlist__mmap_per_cpu(struct perf_evlist *evlist, int prot, int mask) |
600 | { | |
601 | struct perf_evsel *evsel; | |
602 | int cpu, thread; | |
b3a319d5 NK |
603 | int nr_cpus = cpu_map__nr(evlist->cpus); |
604 | int nr_threads = thread_map__nr(evlist->threads); | |
aece948f | 605 | |
e3e1a54f | 606 | pr_debug2("perf event ring buffer mmapped per cpu\n"); |
b3a319d5 | 607 | for (cpu = 0; cpu < nr_cpus; cpu++) { |
aece948f ACM |
608 | int output = -1; |
609 | ||
b3a319d5 | 610 | for (thread = 0; thread < nr_threads; thread++) { |
aece948f ACM |
611 | list_for_each_entry(evsel, &evlist->entries, node) { |
612 | int fd = FD(evsel, cpu, thread); | |
613 | ||
614 | if (output == -1) { | |
615 | output = fd; | |
bccdaba0 | 616 | if (__perf_evlist__mmap(evlist, cpu, |
aece948f ACM |
617 | prot, mask, output) < 0) |
618 | goto out_unmap; | |
619 | } else { | |
620 | if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, output) != 0) | |
621 | goto out_unmap; | |
622 | } | |
623 | ||
624 | if ((evsel->attr.read_format & PERF_FORMAT_ID) && | |
625 | perf_evlist__id_add_fd(evlist, evsel, cpu, thread, fd) < 0) | |
626 | goto out_unmap; | |
627 | } | |
628 | } | |
629 | } | |
630 | ||
631 | return 0; | |
632 | ||
633 | out_unmap: | |
93edcbd9 AH |
634 | for (cpu = 0; cpu < nr_cpus; cpu++) |
635 | __perf_evlist__munmap(evlist, cpu); | |
aece948f ACM |
636 | return -1; |
637 | } | |
638 | ||
639 | static int perf_evlist__mmap_per_thread(struct perf_evlist *evlist, int prot, int mask) | |
640 | { | |
641 | struct perf_evsel *evsel; | |
642 | int thread; | |
b3a319d5 | 643 | int nr_threads = thread_map__nr(evlist->threads); |
aece948f | 644 | |
e3e1a54f | 645 | pr_debug2("perf event ring buffer mmapped per thread\n"); |
b3a319d5 | 646 | for (thread = 0; thread < nr_threads; thread++) { |
aece948f ACM |
647 | int output = -1; |
648 | ||
649 | list_for_each_entry(evsel, &evlist->entries, node) { | |
650 | int fd = FD(evsel, 0, thread); | |
651 | ||
652 | if (output == -1) { | |
653 | output = fd; | |
bccdaba0 | 654 | if (__perf_evlist__mmap(evlist, thread, |
aece948f ACM |
655 | prot, mask, output) < 0) |
656 | goto out_unmap; | |
657 | } else { | |
658 | if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, output) != 0) | |
659 | goto out_unmap; | |
660 | } | |
661 | ||
662 | if ((evsel->attr.read_format & PERF_FORMAT_ID) && | |
663 | perf_evlist__id_add_fd(evlist, evsel, 0, thread, fd) < 0) | |
664 | goto out_unmap; | |
665 | } | |
666 | } | |
667 | ||
668 | return 0; | |
669 | ||
670 | out_unmap: | |
93edcbd9 AH |
671 | for (thread = 0; thread < nr_threads; thread++) |
672 | __perf_evlist__munmap(evlist, thread); | |
aece948f ACM |
673 | return -1; |
674 | } | |
675 | ||
994a1f78 JO |
676 | static size_t perf_evlist__mmap_size(unsigned long pages) |
677 | { | |
678 | /* 512 kiB: default amount of unprivileged mlocked memory */ | |
679 | if (pages == UINT_MAX) | |
680 | pages = (512 * 1024) / page_size; | |
681 | else if (!is_power_of_2(pages)) | |
682 | return 0; | |
683 | ||
684 | return (pages + 1) * page_size; | |
685 | } | |
686 | ||
687 | int perf_evlist__parse_mmap_pages(const struct option *opt, const char *str, | |
688 | int unset __maybe_unused) | |
689 | { | |
690 | unsigned int pages, *mmap_pages = opt->value; | |
691 | size_t size; | |
692 | char *eptr; | |
693 | ||
694 | pages = strtoul(str, &eptr, 10); | |
695 | if (*eptr != '\0') { | |
696 | pr_err("failed to parse --mmap_pages/-m value\n"); | |
697 | return -1; | |
698 | } | |
699 | ||
700 | size = perf_evlist__mmap_size(pages); | |
701 | if (!size) { | |
702 | pr_err("--mmap_pages/-m value must be a power of two."); | |
703 | return -1; | |
704 | } | |
705 | ||
706 | *mmap_pages = pages; | |
707 | return 0; | |
708 | } | |
709 | ||
f8a95309 ACM |
710 | /** perf_evlist__mmap - Create per cpu maps to receive events |
711 | * | |
712 | * @evlist - list of events | |
f8a95309 ACM |
713 | * @pages - map length in pages |
714 | * @overwrite - overwrite older events? | |
715 | * | |
716 | * If overwrite is false the user needs to signal event consuption using: | |
717 | * | |
718 | * struct perf_mmap *m = &evlist->mmap[cpu]; | |
719 | * unsigned int head = perf_mmap__read_head(m); | |
720 | * | |
721 | * perf_mmap__write_tail(m, head) | |
7e2ed097 ACM |
722 | * |
723 | * Using perf_evlist__read_on_cpu does this automatically. | |
f8a95309 | 724 | */ |
50a682ce ACM |
725 | int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages, |
726 | bool overwrite) | |
f8a95309 | 727 | { |
aece948f | 728 | struct perf_evsel *evsel; |
7e2ed097 ACM |
729 | const struct cpu_map *cpus = evlist->cpus; |
730 | const struct thread_map *threads = evlist->threads; | |
50a682ce ACM |
731 | int prot = PROT_READ | (overwrite ? 0 : PROT_WRITE), mask; |
732 | ||
7e2ed097 | 733 | if (evlist->mmap == NULL && perf_evlist__alloc_mmap(evlist) < 0) |
f8a95309 ACM |
734 | return -ENOMEM; |
735 | ||
7e2ed097 | 736 | if (evlist->pollfd == NULL && perf_evlist__alloc_pollfd(evlist) < 0) |
f8a95309 ACM |
737 | return -ENOMEM; |
738 | ||
739 | evlist->overwrite = overwrite; | |
994a1f78 JO |
740 | evlist->mmap_len = perf_evlist__mmap_size(pages); |
741 | mask = evlist->mmap_len - page_size - 1; | |
f8a95309 ACM |
742 | |
743 | list_for_each_entry(evsel, &evlist->entries, node) { | |
744 | if ((evsel->attr.read_format & PERF_FORMAT_ID) && | |
a91e5431 | 745 | evsel->sample_id == NULL && |
a14bb7a6 | 746 | perf_evsel__alloc_id(evsel, cpu_map__nr(cpus), threads->nr) < 0) |
f8a95309 | 747 | return -ENOMEM; |
f8a95309 ACM |
748 | } |
749 | ||
ec1e7e43 | 750 | if (cpu_map__empty(cpus)) |
aece948f | 751 | return perf_evlist__mmap_per_thread(evlist, prot, mask); |
f8a95309 | 752 | |
aece948f | 753 | return perf_evlist__mmap_per_cpu(evlist, prot, mask); |
f8a95309 | 754 | } |
7e2ed097 | 755 | |
b809ac10 NK |
756 | int perf_evlist__create_maps(struct perf_evlist *evlist, |
757 | struct perf_target *target) | |
7e2ed097 | 758 | { |
b809ac10 NK |
759 | evlist->threads = thread_map__new_str(target->pid, target->tid, |
760 | target->uid); | |
7e2ed097 ACM |
761 | |
762 | if (evlist->threads == NULL) | |
763 | return -1; | |
764 | ||
879d77d0 | 765 | if (perf_target__has_task(target)) |
d67356e7 | 766 | evlist->cpus = cpu_map__dummy_new(); |
d1cb9fce NK |
767 | else if (!perf_target__has_cpu(target) && !target->uses_mmap) |
768 | evlist->cpus = cpu_map__dummy_new(); | |
879d77d0 NK |
769 | else |
770 | evlist->cpus = cpu_map__new(target->cpu_list); | |
7e2ed097 ACM |
771 | |
772 | if (evlist->cpus == NULL) | |
773 | goto out_delete_threads; | |
774 | ||
775 | return 0; | |
776 | ||
777 | out_delete_threads: | |
778 | thread_map__delete(evlist->threads); | |
779 | return -1; | |
780 | } | |
781 | ||
782 | void perf_evlist__delete_maps(struct perf_evlist *evlist) | |
783 | { | |
784 | cpu_map__delete(evlist->cpus); | |
785 | thread_map__delete(evlist->threads); | |
786 | evlist->cpus = NULL; | |
787 | evlist->threads = NULL; | |
788 | } | |
0a102479 | 789 | |
1491a632 | 790 | int perf_evlist__apply_filters(struct perf_evlist *evlist) |
0a102479 | 791 | { |
0a102479 | 792 | struct perf_evsel *evsel; |
745cefc5 ACM |
793 | int err = 0; |
794 | const int ncpus = cpu_map__nr(evlist->cpus), | |
b3a319d5 | 795 | nthreads = thread_map__nr(evlist->threads); |
0a102479 FW |
796 | |
797 | list_for_each_entry(evsel, &evlist->entries, node) { | |
745cefc5 | 798 | if (evsel->filter == NULL) |
0a102479 | 799 | continue; |
745cefc5 ACM |
800 | |
801 | err = perf_evsel__set_filter(evsel, ncpus, nthreads, evsel->filter); | |
802 | if (err) | |
803 | break; | |
0a102479 FW |
804 | } |
805 | ||
745cefc5 ACM |
806 | return err; |
807 | } | |
808 | ||
809 | int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter) | |
810 | { | |
811 | struct perf_evsel *evsel; | |
812 | int err = 0; | |
813 | const int ncpus = cpu_map__nr(evlist->cpus), | |
b3a319d5 | 814 | nthreads = thread_map__nr(evlist->threads); |
745cefc5 ACM |
815 | |
816 | list_for_each_entry(evsel, &evlist->entries, node) { | |
817 | err = perf_evsel__set_filter(evsel, ncpus, nthreads, filter); | |
818 | if (err) | |
819 | break; | |
820 | } | |
821 | ||
822 | return err; | |
0a102479 | 823 | } |
74429964 | 824 | |
0c21f736 | 825 | bool perf_evlist__valid_sample_type(struct perf_evlist *evlist) |
74429964 | 826 | { |
75562573 | 827 | struct perf_evsel *pos; |
c2a70653 | 828 | |
75562573 AH |
829 | if (evlist->nr_entries == 1) |
830 | return true; | |
831 | ||
832 | if (evlist->id_pos < 0 || evlist->is_pos < 0) | |
833 | return false; | |
834 | ||
835 | list_for_each_entry(pos, &evlist->entries, node) { | |
836 | if (pos->id_pos != evlist->id_pos || | |
837 | pos->is_pos != evlist->is_pos) | |
c2a70653 | 838 | return false; |
74429964 FW |
839 | } |
840 | ||
c2a70653 | 841 | return true; |
74429964 FW |
842 | } |
843 | ||
75562573 | 844 | u64 __perf_evlist__combined_sample_type(struct perf_evlist *evlist) |
c2a70653 | 845 | { |
75562573 AH |
846 | struct perf_evsel *evsel; |
847 | ||
848 | if (evlist->combined_sample_type) | |
849 | return evlist->combined_sample_type; | |
850 | ||
851 | list_for_each_entry(evsel, &evlist->entries, node) | |
852 | evlist->combined_sample_type |= evsel->attr.sample_type; | |
853 | ||
854 | return evlist->combined_sample_type; | |
855 | } | |
856 | ||
857 | u64 perf_evlist__combined_sample_type(struct perf_evlist *evlist) | |
858 | { | |
859 | evlist->combined_sample_type = 0; | |
860 | return __perf_evlist__combined_sample_type(evlist); | |
c2a70653 ACM |
861 | } |
862 | ||
9ede473c JO |
863 | bool perf_evlist__valid_read_format(struct perf_evlist *evlist) |
864 | { | |
865 | struct perf_evsel *first = perf_evlist__first(evlist), *pos = first; | |
866 | u64 read_format = first->attr.read_format; | |
867 | u64 sample_type = first->attr.sample_type; | |
868 | ||
869 | list_for_each_entry_continue(pos, &evlist->entries, node) { | |
870 | if (read_format != pos->attr.read_format) | |
871 | return false; | |
872 | } | |
873 | ||
874 | /* PERF_SAMPLE_READ imples PERF_FORMAT_ID. */ | |
875 | if ((sample_type & PERF_SAMPLE_READ) && | |
876 | !(read_format & PERF_FORMAT_ID)) { | |
877 | return false; | |
878 | } | |
879 | ||
880 | return true; | |
881 | } | |
882 | ||
883 | u64 perf_evlist__read_format(struct perf_evlist *evlist) | |
884 | { | |
885 | struct perf_evsel *first = perf_evlist__first(evlist); | |
886 | return first->attr.read_format; | |
887 | } | |
888 | ||
0c21f736 | 889 | u16 perf_evlist__id_hdr_size(struct perf_evlist *evlist) |
81e36bff | 890 | { |
0c21f736 | 891 | struct perf_evsel *first = perf_evlist__first(evlist); |
81e36bff ACM |
892 | struct perf_sample *data; |
893 | u64 sample_type; | |
894 | u16 size = 0; | |
895 | ||
81e36bff ACM |
896 | if (!first->attr.sample_id_all) |
897 | goto out; | |
898 | ||
899 | sample_type = first->attr.sample_type; | |
900 | ||
901 | if (sample_type & PERF_SAMPLE_TID) | |
902 | size += sizeof(data->tid) * 2; | |
903 | ||
904 | if (sample_type & PERF_SAMPLE_TIME) | |
905 | size += sizeof(data->time); | |
906 | ||
907 | if (sample_type & PERF_SAMPLE_ID) | |
908 | size += sizeof(data->id); | |
909 | ||
910 | if (sample_type & PERF_SAMPLE_STREAM_ID) | |
911 | size += sizeof(data->stream_id); | |
912 | ||
913 | if (sample_type & PERF_SAMPLE_CPU) | |
914 | size += sizeof(data->cpu) * 2; | |
75562573 AH |
915 | |
916 | if (sample_type & PERF_SAMPLE_IDENTIFIER) | |
917 | size += sizeof(data->id); | |
81e36bff ACM |
918 | out: |
919 | return size; | |
920 | } | |
921 | ||
0c21f736 | 922 | bool perf_evlist__valid_sample_id_all(struct perf_evlist *evlist) |
74429964 | 923 | { |
0c21f736 | 924 | struct perf_evsel *first = perf_evlist__first(evlist), *pos = first; |
c2a70653 ACM |
925 | |
926 | list_for_each_entry_continue(pos, &evlist->entries, node) { | |
927 | if (first->attr.sample_id_all != pos->attr.sample_id_all) | |
928 | return false; | |
74429964 FW |
929 | } |
930 | ||
c2a70653 ACM |
931 | return true; |
932 | } | |
933 | ||
0c21f736 | 934 | bool perf_evlist__sample_id_all(struct perf_evlist *evlist) |
c2a70653 | 935 | { |
0c21f736 | 936 | struct perf_evsel *first = perf_evlist__first(evlist); |
c2a70653 | 937 | return first->attr.sample_id_all; |
74429964 | 938 | } |
81cce8de ACM |
939 | |
940 | void perf_evlist__set_selected(struct perf_evlist *evlist, | |
941 | struct perf_evsel *evsel) | |
942 | { | |
943 | evlist->selected = evsel; | |
944 | } | |
727ab04e | 945 | |
a74b4b66 NK |
946 | void perf_evlist__close(struct perf_evlist *evlist) |
947 | { | |
948 | struct perf_evsel *evsel; | |
949 | int ncpus = cpu_map__nr(evlist->cpus); | |
950 | int nthreads = thread_map__nr(evlist->threads); | |
951 | ||
952 | list_for_each_entry_reverse(evsel, &evlist->entries, node) | |
953 | perf_evsel__close(evsel, ncpus, nthreads); | |
954 | } | |
955 | ||
6a4bb04c | 956 | int perf_evlist__open(struct perf_evlist *evlist) |
727ab04e | 957 | { |
6a4bb04c | 958 | struct perf_evsel *evsel; |
a74b4b66 | 959 | int err; |
727ab04e | 960 | |
733cd2fe AH |
961 | perf_evlist__update_id_pos(evlist); |
962 | ||
727ab04e | 963 | list_for_each_entry(evsel, &evlist->entries, node) { |
6a4bb04c | 964 | err = perf_evsel__open(evsel, evlist->cpus, evlist->threads); |
727ab04e ACM |
965 | if (err < 0) |
966 | goto out_err; | |
967 | } | |
968 | ||
969 | return 0; | |
970 | out_err: | |
a74b4b66 | 971 | perf_evlist__close(evlist); |
41c21a68 | 972 | errno = -err; |
727ab04e ACM |
973 | return err; |
974 | } | |
35b9d88e ACM |
975 | |
976 | int perf_evlist__prepare_workload(struct perf_evlist *evlist, | |
6ef73ec4 | 977 | struct perf_target *target, |
55e162ea NK |
978 | const char *argv[], bool pipe_output, |
979 | bool want_signal) | |
35b9d88e ACM |
980 | { |
981 | int child_ready_pipe[2], go_pipe[2]; | |
982 | char bf; | |
983 | ||
984 | if (pipe(child_ready_pipe) < 0) { | |
985 | perror("failed to create 'ready' pipe"); | |
986 | return -1; | |
987 | } | |
988 | ||
989 | if (pipe(go_pipe) < 0) { | |
990 | perror("failed to create 'go' pipe"); | |
991 | goto out_close_ready_pipe; | |
992 | } | |
993 | ||
994 | evlist->workload.pid = fork(); | |
995 | if (evlist->workload.pid < 0) { | |
996 | perror("failed to fork"); | |
997 | goto out_close_pipes; | |
998 | } | |
999 | ||
1000 | if (!evlist->workload.pid) { | |
119fa3c9 | 1001 | if (pipe_output) |
35b9d88e ACM |
1002 | dup2(2, 1); |
1003 | ||
0817df08 DA |
1004 | signal(SIGTERM, SIG_DFL); |
1005 | ||
35b9d88e ACM |
1006 | close(child_ready_pipe[0]); |
1007 | close(go_pipe[1]); | |
1008 | fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC); | |
1009 | ||
35b9d88e ACM |
1010 | /* |
1011 | * Tell the parent we're ready to go | |
1012 | */ | |
1013 | close(child_ready_pipe[1]); | |
1014 | ||
1015 | /* | |
1016 | * Wait until the parent tells us to go. | |
1017 | */ | |
1018 | if (read(go_pipe[0], &bf, 1) == -1) | |
1019 | perror("unable to read pipe"); | |
1020 | ||
1021 | execvp(argv[0], (char **)argv); | |
1022 | ||
1023 | perror(argv[0]); | |
55e162ea NK |
1024 | if (want_signal) |
1025 | kill(getppid(), SIGUSR1); | |
35b9d88e ACM |
1026 | exit(-1); |
1027 | } | |
1028 | ||
6ef73ec4 | 1029 | if (perf_target__none(target)) |
35b9d88e ACM |
1030 | evlist->threads->map[0] = evlist->workload.pid; |
1031 | ||
1032 | close(child_ready_pipe[1]); | |
1033 | close(go_pipe[0]); | |
1034 | /* | |
1035 | * wait for child to settle | |
1036 | */ | |
1037 | if (read(child_ready_pipe[0], &bf, 1) == -1) { | |
1038 | perror("unable to read pipe"); | |
1039 | goto out_close_pipes; | |
1040 | } | |
1041 | ||
bcf3145f | 1042 | fcntl(go_pipe[1], F_SETFD, FD_CLOEXEC); |
35b9d88e ACM |
1043 | evlist->workload.cork_fd = go_pipe[1]; |
1044 | close(child_ready_pipe[0]); | |
1045 | return 0; | |
1046 | ||
1047 | out_close_pipes: | |
1048 | close(go_pipe[0]); | |
1049 | close(go_pipe[1]); | |
1050 | out_close_ready_pipe: | |
1051 | close(child_ready_pipe[0]); | |
1052 | close(child_ready_pipe[1]); | |
1053 | return -1; | |
1054 | } | |
1055 | ||
1056 | int perf_evlist__start_workload(struct perf_evlist *evlist) | |
1057 | { | |
1058 | if (evlist->workload.cork_fd > 0) { | |
b3824404 | 1059 | char bf = 0; |
bcf3145f | 1060 | int ret; |
35b9d88e ACM |
1061 | /* |
1062 | * Remove the cork, let it rip! | |
1063 | */ | |
bcf3145f NK |
1064 | ret = write(evlist->workload.cork_fd, &bf, 1); |
1065 | if (ret < 0) | |
1066 | perror("enable to write to pipe"); | |
1067 | ||
1068 | close(evlist->workload.cork_fd); | |
1069 | return ret; | |
35b9d88e ACM |
1070 | } |
1071 | ||
1072 | return 0; | |
1073 | } | |
cb0b29e0 | 1074 | |
a3f698fe | 1075 | int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *event, |
0807d2d8 | 1076 | struct perf_sample *sample) |
cb0b29e0 | 1077 | { |
75562573 AH |
1078 | struct perf_evsel *evsel = perf_evlist__event2evsel(evlist, event); |
1079 | ||
1080 | if (!evsel) | |
1081 | return -EFAULT; | |
0807d2d8 | 1082 | return perf_evsel__parse_sample(evsel, event, sample); |
cb0b29e0 | 1083 | } |
78f067b3 ACM |
1084 | |
1085 | size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp) | |
1086 | { | |
1087 | struct perf_evsel *evsel; | |
1088 | size_t printed = 0; | |
1089 | ||
1090 | list_for_each_entry(evsel, &evlist->entries, node) { | |
1091 | printed += fprintf(fp, "%s%s", evsel->idx ? ", " : "", | |
1092 | perf_evsel__name(evsel)); | |
1093 | } | |
1094 | ||
1095 | return printed + fprintf(fp, "\n");; | |
1096 | } |