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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 ACM |
9 | #include "util.h" |
10 | #include "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" | |
35b9d88e | 17 | #include <unistd.h> |
361c99a6 | 18 | |
50d08e47 ACM |
19 | #include "parse-events.h" |
20 | ||
f8a95309 ACM |
21 | #include <sys/mman.h> |
22 | ||
70db7533 ACM |
23 | #include <linux/bitops.h> |
24 | #include <linux/hash.h> | |
25 | ||
f8a95309 | 26 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
a91e5431 | 27 | #define SID(e, x, y) xyarray__entry(e->sample_id, x, y) |
f8a95309 | 28 | |
7e2ed097 ACM |
29 | void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus, |
30 | struct thread_map *threads) | |
ef1d1af2 ACM |
31 | { |
32 | int i; | |
33 | ||
34 | for (i = 0; i < PERF_EVLIST__HLIST_SIZE; ++i) | |
35 | INIT_HLIST_HEAD(&evlist->heads[i]); | |
36 | INIT_LIST_HEAD(&evlist->entries); | |
7e2ed097 | 37 | perf_evlist__set_maps(evlist, cpus, threads); |
35b9d88e | 38 | evlist->workload.pid = -1; |
ef1d1af2 ACM |
39 | } |
40 | ||
7e2ed097 ACM |
41 | struct perf_evlist *perf_evlist__new(struct cpu_map *cpus, |
42 | struct thread_map *threads) | |
361c99a6 ACM |
43 | { |
44 | struct perf_evlist *evlist = zalloc(sizeof(*evlist)); | |
45 | ||
ef1d1af2 | 46 | if (evlist != NULL) |
7e2ed097 | 47 | perf_evlist__init(evlist, cpus, threads); |
361c99a6 ACM |
48 | |
49 | return evlist; | |
50 | } | |
51 | ||
0f82ebc4 ACM |
52 | void perf_evlist__config_attrs(struct perf_evlist *evlist, |
53 | struct perf_record_opts *opts) | |
54 | { | |
cac21425 | 55 | struct perf_evsel *evsel; |
0f82ebc4 ACM |
56 | |
57 | if (evlist->cpus->map[0] < 0) | |
58 | opts->no_inherit = true; | |
59 | ||
60 | list_for_each_entry(evsel, &evlist->entries, node) { | |
cac21425 | 61 | perf_evsel__config(evsel, opts); |
0f82ebc4 ACM |
62 | |
63 | if (evlist->nr_entries > 1) | |
64 | evsel->attr.sample_type |= PERF_SAMPLE_ID; | |
65 | } | |
66 | } | |
67 | ||
361c99a6 ACM |
68 | static void perf_evlist__purge(struct perf_evlist *evlist) |
69 | { | |
70 | struct perf_evsel *pos, *n; | |
71 | ||
72 | list_for_each_entry_safe(pos, n, &evlist->entries, node) { | |
73 | list_del_init(&pos->node); | |
74 | perf_evsel__delete(pos); | |
75 | } | |
76 | ||
77 | evlist->nr_entries = 0; | |
78 | } | |
79 | ||
ef1d1af2 | 80 | void perf_evlist__exit(struct perf_evlist *evlist) |
361c99a6 | 81 | { |
70db7533 | 82 | free(evlist->mmap); |
5c581041 | 83 | free(evlist->pollfd); |
ef1d1af2 ACM |
84 | evlist->mmap = NULL; |
85 | evlist->pollfd = NULL; | |
86 | } | |
87 | ||
88 | void perf_evlist__delete(struct perf_evlist *evlist) | |
89 | { | |
90 | perf_evlist__purge(evlist); | |
91 | perf_evlist__exit(evlist); | |
361c99a6 ACM |
92 | free(evlist); |
93 | } | |
94 | ||
95 | void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry) | |
96 | { | |
97 | list_add_tail(&entry->node, &evlist->entries); | |
98 | ++evlist->nr_entries; | |
99 | } | |
100 | ||
0529bc1f JO |
101 | void perf_evlist__splice_list_tail(struct perf_evlist *evlist, |
102 | struct list_head *list, | |
103 | int nr_entries) | |
50d08e47 ACM |
104 | { |
105 | list_splice_tail(list, &evlist->entries); | |
106 | evlist->nr_entries += nr_entries; | |
107 | } | |
108 | ||
63dab225 ACM |
109 | void __perf_evlist__set_leader(struct list_head *list) |
110 | { | |
111 | struct perf_evsel *evsel, *leader; | |
112 | ||
113 | leader = list_entry(list->next, struct perf_evsel, node); | |
114 | leader->leader = NULL; | |
115 | ||
116 | list_for_each_entry(evsel, list, node) { | |
117 | if (evsel != leader) | |
118 | evsel->leader = leader; | |
119 | } | |
120 | } | |
121 | ||
122 | void perf_evlist__set_leader(struct perf_evlist *evlist) | |
6a4bb04c JO |
123 | { |
124 | if (evlist->nr_entries) | |
63dab225 | 125 | __perf_evlist__set_leader(&evlist->entries); |
6a4bb04c JO |
126 | } |
127 | ||
361c99a6 ACM |
128 | int perf_evlist__add_default(struct perf_evlist *evlist) |
129 | { | |
130 | struct perf_event_attr attr = { | |
131 | .type = PERF_TYPE_HARDWARE, | |
132 | .config = PERF_COUNT_HW_CPU_CYCLES, | |
133 | }; | |
1aed2671 JR |
134 | struct perf_evsel *evsel; |
135 | ||
136 | event_attr_init(&attr); | |
361c99a6 | 137 | |
1aed2671 | 138 | evsel = perf_evsel__new(&attr, 0); |
361c99a6 | 139 | if (evsel == NULL) |
cc2d86b0 SE |
140 | goto error; |
141 | ||
142 | /* use strdup() because free(evsel) assumes name is allocated */ | |
143 | evsel->name = strdup("cycles"); | |
144 | if (!evsel->name) | |
145 | goto error_free; | |
361c99a6 ACM |
146 | |
147 | perf_evlist__add(evlist, evsel); | |
148 | return 0; | |
cc2d86b0 SE |
149 | error_free: |
150 | perf_evsel__delete(evsel); | |
151 | error: | |
152 | return -ENOMEM; | |
361c99a6 | 153 | } |
5c581041 | 154 | |
e60fc847 ACM |
155 | static int perf_evlist__add_attrs(struct perf_evlist *evlist, |
156 | struct perf_event_attr *attrs, size_t nr_attrs) | |
50d08e47 ACM |
157 | { |
158 | struct perf_evsel *evsel, *n; | |
159 | LIST_HEAD(head); | |
160 | size_t i; | |
161 | ||
162 | for (i = 0; i < nr_attrs; i++) { | |
163 | evsel = perf_evsel__new(attrs + i, evlist->nr_entries + i); | |
164 | if (evsel == NULL) | |
165 | goto out_delete_partial_list; | |
166 | list_add_tail(&evsel->node, &head); | |
167 | } | |
168 | ||
169 | perf_evlist__splice_list_tail(evlist, &head, nr_attrs); | |
170 | ||
171 | return 0; | |
172 | ||
173 | out_delete_partial_list: | |
174 | list_for_each_entry_safe(evsel, n, &head, node) | |
175 | perf_evsel__delete(evsel); | |
176 | return -1; | |
177 | } | |
178 | ||
79695e1b ACM |
179 | int __perf_evlist__add_default_attrs(struct perf_evlist *evlist, |
180 | struct perf_event_attr *attrs, size_t nr_attrs) | |
181 | { | |
182 | size_t i; | |
183 | ||
184 | for (i = 0; i < nr_attrs; i++) | |
185 | event_attr_init(attrs + i); | |
186 | ||
187 | return perf_evlist__add_attrs(evlist, attrs, nr_attrs); | |
188 | } | |
189 | ||
da378962 ACM |
190 | struct perf_evsel * |
191 | perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id) | |
ee29be62 ACM |
192 | { |
193 | struct perf_evsel *evsel; | |
194 | ||
195 | list_for_each_entry(evsel, &evlist->entries, node) { | |
196 | if (evsel->attr.type == PERF_TYPE_TRACEPOINT && | |
197 | (int)evsel->attr.config == id) | |
198 | return evsel; | |
199 | } | |
200 | ||
201 | return NULL; | |
202 | } | |
203 | ||
39876e7d ACM |
204 | int perf_evlist__add_newtp(struct perf_evlist *evlist, |
205 | const char *sys, const char *name, void *handler) | |
206 | { | |
207 | struct perf_evsel *evsel; | |
208 | ||
209 | evsel = perf_evsel__newtp(sys, name, evlist->nr_entries); | |
210 | if (evsel == NULL) | |
211 | return -1; | |
212 | ||
213 | evsel->handler.func = handler; | |
214 | perf_evlist__add(evlist, evsel); | |
215 | return 0; | |
216 | } | |
217 | ||
4152ab37 ACM |
218 | void perf_evlist__disable(struct perf_evlist *evlist) |
219 | { | |
220 | int cpu, thread; | |
221 | struct perf_evsel *pos; | |
222 | ||
223 | for (cpu = 0; cpu < evlist->cpus->nr; cpu++) { | |
224 | list_for_each_entry(pos, &evlist->entries, node) { | |
07ac002f | 225 | if (perf_evsel__is_group_member(pos)) |
3fe4430d | 226 | continue; |
4152ab37 | 227 | for (thread = 0; thread < evlist->threads->nr; thread++) |
55da8005 NK |
228 | ioctl(FD(pos, cpu, thread), |
229 | PERF_EVENT_IOC_DISABLE, 0); | |
4152ab37 ACM |
230 | } |
231 | } | |
232 | } | |
233 | ||
764e16a3 DA |
234 | void perf_evlist__enable(struct perf_evlist *evlist) |
235 | { | |
236 | int cpu, thread; | |
237 | struct perf_evsel *pos; | |
238 | ||
a14bb7a6 | 239 | for (cpu = 0; cpu < cpu_map__nr(evlist->cpus); cpu++) { |
764e16a3 | 240 | list_for_each_entry(pos, &evlist->entries, node) { |
07ac002f | 241 | if (perf_evsel__is_group_member(pos)) |
3fe4430d | 242 | continue; |
764e16a3 | 243 | for (thread = 0; thread < evlist->threads->nr; thread++) |
55da8005 NK |
244 | ioctl(FD(pos, cpu, thread), |
245 | PERF_EVENT_IOC_ENABLE, 0); | |
764e16a3 DA |
246 | } |
247 | } | |
248 | } | |
249 | ||
806fb630 | 250 | static int perf_evlist__alloc_pollfd(struct perf_evlist *evlist) |
5c581041 | 251 | { |
a14bb7a6 | 252 | int nfds = cpu_map__nr(evlist->cpus) * evlist->threads->nr * evlist->nr_entries; |
5c581041 ACM |
253 | evlist->pollfd = malloc(sizeof(struct pollfd) * nfds); |
254 | return evlist->pollfd != NULL ? 0 : -ENOMEM; | |
255 | } | |
70082dd9 ACM |
256 | |
257 | void perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd) | |
258 | { | |
259 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
260 | evlist->pollfd[evlist->nr_fds].fd = fd; | |
261 | evlist->pollfd[evlist->nr_fds].events = POLLIN; | |
262 | evlist->nr_fds++; | |
263 | } | |
70db7533 | 264 | |
a91e5431 ACM |
265 | static void perf_evlist__id_hash(struct perf_evlist *evlist, |
266 | struct perf_evsel *evsel, | |
267 | int cpu, int thread, u64 id) | |
3d3b5e95 ACM |
268 | { |
269 | int hash; | |
270 | struct perf_sample_id *sid = SID(evsel, cpu, thread); | |
271 | ||
272 | sid->id = id; | |
273 | sid->evsel = evsel; | |
274 | hash = hash_64(sid->id, PERF_EVLIST__HLIST_BITS); | |
275 | hlist_add_head(&sid->node, &evlist->heads[hash]); | |
276 | } | |
277 | ||
a91e5431 ACM |
278 | void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel, |
279 | int cpu, int thread, u64 id) | |
280 | { | |
281 | perf_evlist__id_hash(evlist, evsel, cpu, thread, id); | |
282 | evsel->id[evsel->ids++] = id; | |
283 | } | |
284 | ||
285 | static int perf_evlist__id_add_fd(struct perf_evlist *evlist, | |
286 | struct perf_evsel *evsel, | |
287 | int cpu, int thread, int fd) | |
f8a95309 | 288 | { |
f8a95309 | 289 | u64 read_data[4] = { 0, }; |
3d3b5e95 | 290 | int id_idx = 1; /* The first entry is the counter value */ |
f8a95309 ACM |
291 | |
292 | if (!(evsel->attr.read_format & PERF_FORMAT_ID) || | |
293 | read(fd, &read_data, sizeof(read_data)) == -1) | |
294 | return -1; | |
295 | ||
296 | if (evsel->attr.read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) | |
297 | ++id_idx; | |
298 | if (evsel->attr.read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) | |
299 | ++id_idx; | |
300 | ||
a91e5431 | 301 | perf_evlist__id_add(evlist, evsel, cpu, thread, read_data[id_idx]); |
f8a95309 ACM |
302 | return 0; |
303 | } | |
304 | ||
70db7533 ACM |
305 | struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id) |
306 | { | |
307 | struct hlist_head *head; | |
308 | struct hlist_node *pos; | |
309 | struct perf_sample_id *sid; | |
310 | int hash; | |
311 | ||
312 | if (evlist->nr_entries == 1) | |
0c21f736 | 313 | return perf_evlist__first(evlist); |
70db7533 ACM |
314 | |
315 | hash = hash_64(id, PERF_EVLIST__HLIST_BITS); | |
316 | head = &evlist->heads[hash]; | |
317 | ||
318 | hlist_for_each_entry(sid, pos, head, node) | |
319 | if (sid->id == id) | |
320 | return sid->evsel; | |
30e68bcc NK |
321 | |
322 | if (!perf_evlist__sample_id_all(evlist)) | |
0c21f736 | 323 | return perf_evlist__first(evlist); |
30e68bcc | 324 | |
70db7533 ACM |
325 | return NULL; |
326 | } | |
04391deb | 327 | |
aece948f | 328 | union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx) |
04391deb | 329 | { |
aece948f | 330 | struct perf_mmap *md = &evlist->mmap[idx]; |
04391deb ACM |
331 | unsigned int head = perf_mmap__read_head(md); |
332 | unsigned int old = md->prev; | |
333 | unsigned char *data = md->base + page_size; | |
8115d60c | 334 | union perf_event *event = NULL; |
04391deb | 335 | |
7bb41152 | 336 | if (evlist->overwrite) { |
04391deb | 337 | /* |
7bb41152 ACM |
338 | * If we're further behind than half the buffer, there's a chance |
339 | * the writer will bite our tail and mess up the samples under us. | |
340 | * | |
341 | * If we somehow ended up ahead of the head, we got messed up. | |
342 | * | |
343 | * In either case, truncate and restart at head. | |
04391deb | 344 | */ |
7bb41152 ACM |
345 | int diff = head - old; |
346 | if (diff > md->mask / 2 || diff < 0) { | |
347 | fprintf(stderr, "WARNING: failed to keep up with mmap data.\n"); | |
348 | ||
349 | /* | |
350 | * head points to a known good entry, start there. | |
351 | */ | |
352 | old = head; | |
353 | } | |
04391deb ACM |
354 | } |
355 | ||
356 | if (old != head) { | |
357 | size_t size; | |
358 | ||
8115d60c | 359 | event = (union perf_event *)&data[old & md->mask]; |
04391deb ACM |
360 | size = event->header.size; |
361 | ||
362 | /* | |
363 | * Event straddles the mmap boundary -- header should always | |
364 | * be inside due to u64 alignment of output. | |
365 | */ | |
366 | if ((old & md->mask) + size != ((old + size) & md->mask)) { | |
367 | unsigned int offset = old; | |
368 | unsigned int len = min(sizeof(*event), size), cpy; | |
369 | void *dst = &evlist->event_copy; | |
370 | ||
371 | do { | |
372 | cpy = min(md->mask + 1 - (offset & md->mask), len); | |
373 | memcpy(dst, &data[offset & md->mask], cpy); | |
374 | offset += cpy; | |
375 | dst += cpy; | |
376 | len -= cpy; | |
377 | } while (len); | |
378 | ||
379 | event = &evlist->event_copy; | |
380 | } | |
381 | ||
382 | old += size; | |
383 | } | |
384 | ||
385 | md->prev = old; | |
7bb41152 ACM |
386 | |
387 | if (!evlist->overwrite) | |
388 | perf_mmap__write_tail(md, old); | |
389 | ||
04391deb ACM |
390 | return event; |
391 | } | |
f8a95309 | 392 | |
7e2ed097 | 393 | void perf_evlist__munmap(struct perf_evlist *evlist) |
f8a95309 | 394 | { |
aece948f | 395 | int i; |
f8a95309 | 396 | |
aece948f ACM |
397 | for (i = 0; i < evlist->nr_mmaps; i++) { |
398 | if (evlist->mmap[i].base != NULL) { | |
399 | munmap(evlist->mmap[i].base, evlist->mmap_len); | |
400 | evlist->mmap[i].base = NULL; | |
f8a95309 ACM |
401 | } |
402 | } | |
aece948f ACM |
403 | |
404 | free(evlist->mmap); | |
405 | evlist->mmap = NULL; | |
f8a95309 ACM |
406 | } |
407 | ||
806fb630 | 408 | static int perf_evlist__alloc_mmap(struct perf_evlist *evlist) |
f8a95309 | 409 | { |
a14bb7a6 ACM |
410 | evlist->nr_mmaps = cpu_map__nr(evlist->cpus); |
411 | if (cpu_map__all(evlist->cpus)) | |
aece948f ACM |
412 | evlist->nr_mmaps = evlist->threads->nr; |
413 | evlist->mmap = zalloc(evlist->nr_mmaps * sizeof(struct perf_mmap)); | |
f8a95309 ACM |
414 | return evlist->mmap != NULL ? 0 : -ENOMEM; |
415 | } | |
416 | ||
bccdaba0 | 417 | static int __perf_evlist__mmap(struct perf_evlist *evlist, |
aece948f | 418 | int idx, int prot, int mask, int fd) |
f8a95309 | 419 | { |
aece948f ACM |
420 | evlist->mmap[idx].prev = 0; |
421 | evlist->mmap[idx].mask = mask; | |
422 | evlist->mmap[idx].base = mmap(NULL, evlist->mmap_len, prot, | |
f8a95309 | 423 | MAP_SHARED, fd, 0); |
301b195d NE |
424 | if (evlist->mmap[idx].base == MAP_FAILED) { |
425 | evlist->mmap[idx].base = NULL; | |
f8a95309 | 426 | return -1; |
301b195d | 427 | } |
f8a95309 ACM |
428 | |
429 | perf_evlist__add_pollfd(evlist, fd); | |
430 | return 0; | |
431 | } | |
432 | ||
aece948f ACM |
433 | static int perf_evlist__mmap_per_cpu(struct perf_evlist *evlist, int prot, int mask) |
434 | { | |
435 | struct perf_evsel *evsel; | |
436 | int cpu, thread; | |
437 | ||
438 | for (cpu = 0; cpu < evlist->cpus->nr; cpu++) { | |
439 | int output = -1; | |
440 | ||
441 | for (thread = 0; thread < evlist->threads->nr; thread++) { | |
442 | list_for_each_entry(evsel, &evlist->entries, node) { | |
443 | int fd = FD(evsel, cpu, thread); | |
444 | ||
445 | if (output == -1) { | |
446 | output = fd; | |
bccdaba0 | 447 | if (__perf_evlist__mmap(evlist, cpu, |
aece948f ACM |
448 | prot, mask, output) < 0) |
449 | goto out_unmap; | |
450 | } else { | |
451 | if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, output) != 0) | |
452 | goto out_unmap; | |
453 | } | |
454 | ||
455 | if ((evsel->attr.read_format & PERF_FORMAT_ID) && | |
456 | perf_evlist__id_add_fd(evlist, evsel, cpu, thread, fd) < 0) | |
457 | goto out_unmap; | |
458 | } | |
459 | } | |
460 | } | |
461 | ||
462 | return 0; | |
463 | ||
464 | out_unmap: | |
465 | for (cpu = 0; cpu < evlist->cpus->nr; cpu++) { | |
466 | if (evlist->mmap[cpu].base != NULL) { | |
467 | munmap(evlist->mmap[cpu].base, evlist->mmap_len); | |
468 | evlist->mmap[cpu].base = NULL; | |
469 | } | |
470 | } | |
471 | return -1; | |
472 | } | |
473 | ||
474 | static int perf_evlist__mmap_per_thread(struct perf_evlist *evlist, int prot, int mask) | |
475 | { | |
476 | struct perf_evsel *evsel; | |
477 | int thread; | |
478 | ||
479 | for (thread = 0; thread < evlist->threads->nr; thread++) { | |
480 | int output = -1; | |
481 | ||
482 | list_for_each_entry(evsel, &evlist->entries, node) { | |
483 | int fd = FD(evsel, 0, thread); | |
484 | ||
485 | if (output == -1) { | |
486 | output = fd; | |
bccdaba0 | 487 | if (__perf_evlist__mmap(evlist, thread, |
aece948f ACM |
488 | prot, mask, output) < 0) |
489 | goto out_unmap; | |
490 | } else { | |
491 | if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, output) != 0) | |
492 | goto out_unmap; | |
493 | } | |
494 | ||
495 | if ((evsel->attr.read_format & PERF_FORMAT_ID) && | |
496 | perf_evlist__id_add_fd(evlist, evsel, 0, thread, fd) < 0) | |
497 | goto out_unmap; | |
498 | } | |
499 | } | |
500 | ||
501 | return 0; | |
502 | ||
503 | out_unmap: | |
504 | for (thread = 0; thread < evlist->threads->nr; thread++) { | |
505 | if (evlist->mmap[thread].base != NULL) { | |
506 | munmap(evlist->mmap[thread].base, evlist->mmap_len); | |
507 | evlist->mmap[thread].base = NULL; | |
508 | } | |
509 | } | |
510 | return -1; | |
511 | } | |
512 | ||
f8a95309 ACM |
513 | /** perf_evlist__mmap - Create per cpu maps to receive events |
514 | * | |
515 | * @evlist - list of events | |
f8a95309 ACM |
516 | * @pages - map length in pages |
517 | * @overwrite - overwrite older events? | |
518 | * | |
519 | * If overwrite is false the user needs to signal event consuption using: | |
520 | * | |
521 | * struct perf_mmap *m = &evlist->mmap[cpu]; | |
522 | * unsigned int head = perf_mmap__read_head(m); | |
523 | * | |
524 | * perf_mmap__write_tail(m, head) | |
7e2ed097 ACM |
525 | * |
526 | * Using perf_evlist__read_on_cpu does this automatically. | |
f8a95309 | 527 | */ |
50a682ce ACM |
528 | int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages, |
529 | bool overwrite) | |
f8a95309 | 530 | { |
aece948f | 531 | struct perf_evsel *evsel; |
7e2ed097 ACM |
532 | const struct cpu_map *cpus = evlist->cpus; |
533 | const struct thread_map *threads = evlist->threads; | |
50a682ce ACM |
534 | int prot = PROT_READ | (overwrite ? 0 : PROT_WRITE), mask; |
535 | ||
536 | /* 512 kiB: default amount of unprivileged mlocked memory */ | |
537 | if (pages == UINT_MAX) | |
538 | pages = (512 * 1024) / page_size; | |
41d0d933 NE |
539 | else if (!is_power_of_2(pages)) |
540 | return -EINVAL; | |
50a682ce ACM |
541 | |
542 | mask = pages * page_size - 1; | |
f8a95309 | 543 | |
7e2ed097 | 544 | if (evlist->mmap == NULL && perf_evlist__alloc_mmap(evlist) < 0) |
f8a95309 ACM |
545 | return -ENOMEM; |
546 | ||
7e2ed097 | 547 | if (evlist->pollfd == NULL && perf_evlist__alloc_pollfd(evlist) < 0) |
f8a95309 ACM |
548 | return -ENOMEM; |
549 | ||
550 | evlist->overwrite = overwrite; | |
551 | evlist->mmap_len = (pages + 1) * page_size; | |
f8a95309 ACM |
552 | |
553 | list_for_each_entry(evsel, &evlist->entries, node) { | |
554 | if ((evsel->attr.read_format & PERF_FORMAT_ID) && | |
a91e5431 | 555 | evsel->sample_id == NULL && |
a14bb7a6 | 556 | perf_evsel__alloc_id(evsel, cpu_map__nr(cpus), threads->nr) < 0) |
f8a95309 | 557 | return -ENOMEM; |
f8a95309 ACM |
558 | } |
559 | ||
a14bb7a6 | 560 | if (cpu_map__all(cpus)) |
aece948f | 561 | return perf_evlist__mmap_per_thread(evlist, prot, mask); |
f8a95309 | 562 | |
aece948f | 563 | return perf_evlist__mmap_per_cpu(evlist, prot, mask); |
f8a95309 | 564 | } |
7e2ed097 | 565 | |
b809ac10 NK |
566 | int perf_evlist__create_maps(struct perf_evlist *evlist, |
567 | struct perf_target *target) | |
7e2ed097 | 568 | { |
b809ac10 NK |
569 | evlist->threads = thread_map__new_str(target->pid, target->tid, |
570 | target->uid); | |
7e2ed097 ACM |
571 | |
572 | if (evlist->threads == NULL) | |
573 | return -1; | |
574 | ||
879d77d0 | 575 | if (perf_target__has_task(target)) |
d67356e7 | 576 | evlist->cpus = cpu_map__dummy_new(); |
d1cb9fce NK |
577 | else if (!perf_target__has_cpu(target) && !target->uses_mmap) |
578 | evlist->cpus = cpu_map__dummy_new(); | |
879d77d0 NK |
579 | else |
580 | evlist->cpus = cpu_map__new(target->cpu_list); | |
7e2ed097 ACM |
581 | |
582 | if (evlist->cpus == NULL) | |
583 | goto out_delete_threads; | |
584 | ||
585 | return 0; | |
586 | ||
587 | out_delete_threads: | |
588 | thread_map__delete(evlist->threads); | |
589 | return -1; | |
590 | } | |
591 | ||
592 | void perf_evlist__delete_maps(struct perf_evlist *evlist) | |
593 | { | |
594 | cpu_map__delete(evlist->cpus); | |
595 | thread_map__delete(evlist->threads); | |
596 | evlist->cpus = NULL; | |
597 | evlist->threads = NULL; | |
598 | } | |
0a102479 | 599 | |
1491a632 | 600 | int perf_evlist__apply_filters(struct perf_evlist *evlist) |
0a102479 | 601 | { |
0a102479 | 602 | struct perf_evsel *evsel; |
745cefc5 ACM |
603 | int err = 0; |
604 | const int ncpus = cpu_map__nr(evlist->cpus), | |
605 | nthreads = evlist->threads->nr; | |
0a102479 FW |
606 | |
607 | list_for_each_entry(evsel, &evlist->entries, node) { | |
745cefc5 | 608 | if (evsel->filter == NULL) |
0a102479 | 609 | continue; |
745cefc5 ACM |
610 | |
611 | err = perf_evsel__set_filter(evsel, ncpus, nthreads, evsel->filter); | |
612 | if (err) | |
613 | break; | |
0a102479 FW |
614 | } |
615 | ||
745cefc5 ACM |
616 | return err; |
617 | } | |
618 | ||
619 | int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter) | |
620 | { | |
621 | struct perf_evsel *evsel; | |
622 | int err = 0; | |
623 | const int ncpus = cpu_map__nr(evlist->cpus), | |
624 | nthreads = evlist->threads->nr; | |
625 | ||
626 | list_for_each_entry(evsel, &evlist->entries, node) { | |
627 | err = perf_evsel__set_filter(evsel, ncpus, nthreads, filter); | |
628 | if (err) | |
629 | break; | |
630 | } | |
631 | ||
632 | return err; | |
0a102479 | 633 | } |
74429964 | 634 | |
0c21f736 | 635 | bool perf_evlist__valid_sample_type(struct perf_evlist *evlist) |
74429964 | 636 | { |
0c21f736 | 637 | struct perf_evsel *first = perf_evlist__first(evlist), *pos = first; |
c2a70653 ACM |
638 | |
639 | list_for_each_entry_continue(pos, &evlist->entries, node) { | |
640 | if (first->attr.sample_type != pos->attr.sample_type) | |
641 | return false; | |
74429964 FW |
642 | } |
643 | ||
c2a70653 | 644 | return true; |
74429964 FW |
645 | } |
646 | ||
0c21f736 | 647 | u64 perf_evlist__sample_type(struct perf_evlist *evlist) |
c2a70653 | 648 | { |
0c21f736 | 649 | struct perf_evsel *first = perf_evlist__first(evlist); |
c2a70653 ACM |
650 | return first->attr.sample_type; |
651 | } | |
652 | ||
0c21f736 | 653 | u16 perf_evlist__id_hdr_size(struct perf_evlist *evlist) |
81e36bff | 654 | { |
0c21f736 | 655 | struct perf_evsel *first = perf_evlist__first(evlist); |
81e36bff ACM |
656 | struct perf_sample *data; |
657 | u64 sample_type; | |
658 | u16 size = 0; | |
659 | ||
81e36bff ACM |
660 | if (!first->attr.sample_id_all) |
661 | goto out; | |
662 | ||
663 | sample_type = first->attr.sample_type; | |
664 | ||
665 | if (sample_type & PERF_SAMPLE_TID) | |
666 | size += sizeof(data->tid) * 2; | |
667 | ||
668 | if (sample_type & PERF_SAMPLE_TIME) | |
669 | size += sizeof(data->time); | |
670 | ||
671 | if (sample_type & PERF_SAMPLE_ID) | |
672 | size += sizeof(data->id); | |
673 | ||
674 | if (sample_type & PERF_SAMPLE_STREAM_ID) | |
675 | size += sizeof(data->stream_id); | |
676 | ||
677 | if (sample_type & PERF_SAMPLE_CPU) | |
678 | size += sizeof(data->cpu) * 2; | |
679 | out: | |
680 | return size; | |
681 | } | |
682 | ||
0c21f736 | 683 | bool perf_evlist__valid_sample_id_all(struct perf_evlist *evlist) |
74429964 | 684 | { |
0c21f736 | 685 | struct perf_evsel *first = perf_evlist__first(evlist), *pos = first; |
c2a70653 ACM |
686 | |
687 | list_for_each_entry_continue(pos, &evlist->entries, node) { | |
688 | if (first->attr.sample_id_all != pos->attr.sample_id_all) | |
689 | return false; | |
74429964 FW |
690 | } |
691 | ||
c2a70653 ACM |
692 | return true; |
693 | } | |
694 | ||
0c21f736 | 695 | bool perf_evlist__sample_id_all(struct perf_evlist *evlist) |
c2a70653 | 696 | { |
0c21f736 | 697 | struct perf_evsel *first = perf_evlist__first(evlist); |
c2a70653 | 698 | return first->attr.sample_id_all; |
74429964 | 699 | } |
81cce8de ACM |
700 | |
701 | void perf_evlist__set_selected(struct perf_evlist *evlist, | |
702 | struct perf_evsel *evsel) | |
703 | { | |
704 | evlist->selected = evsel; | |
705 | } | |
727ab04e | 706 | |
6a4bb04c | 707 | int perf_evlist__open(struct perf_evlist *evlist) |
727ab04e | 708 | { |
6a4bb04c | 709 | struct perf_evsel *evsel; |
727ab04e ACM |
710 | int err, ncpus, nthreads; |
711 | ||
727ab04e | 712 | list_for_each_entry(evsel, &evlist->entries, node) { |
6a4bb04c | 713 | err = perf_evsel__open(evsel, evlist->cpus, evlist->threads); |
727ab04e ACM |
714 | if (err < 0) |
715 | goto out_err; | |
716 | } | |
717 | ||
718 | return 0; | |
719 | out_err: | |
720 | ncpus = evlist->cpus ? evlist->cpus->nr : 1; | |
721 | nthreads = evlist->threads ? evlist->threads->nr : 1; | |
722 | ||
723 | list_for_each_entry_reverse(evsel, &evlist->entries, node) | |
724 | perf_evsel__close(evsel, ncpus, nthreads); | |
725 | ||
41c21a68 | 726 | errno = -err; |
727ab04e ACM |
727 | return err; |
728 | } | |
35b9d88e ACM |
729 | |
730 | int perf_evlist__prepare_workload(struct perf_evlist *evlist, | |
731 | struct perf_record_opts *opts, | |
732 | const char *argv[]) | |
733 | { | |
734 | int child_ready_pipe[2], go_pipe[2]; | |
735 | char bf; | |
736 | ||
737 | if (pipe(child_ready_pipe) < 0) { | |
738 | perror("failed to create 'ready' pipe"); | |
739 | return -1; | |
740 | } | |
741 | ||
742 | if (pipe(go_pipe) < 0) { | |
743 | perror("failed to create 'go' pipe"); | |
744 | goto out_close_ready_pipe; | |
745 | } | |
746 | ||
747 | evlist->workload.pid = fork(); | |
748 | if (evlist->workload.pid < 0) { | |
749 | perror("failed to fork"); | |
750 | goto out_close_pipes; | |
751 | } | |
752 | ||
753 | if (!evlist->workload.pid) { | |
754 | if (opts->pipe_output) | |
755 | dup2(2, 1); | |
756 | ||
757 | close(child_ready_pipe[0]); | |
758 | close(go_pipe[1]); | |
759 | fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC); | |
760 | ||
761 | /* | |
762 | * Do a dummy execvp to get the PLT entry resolved, | |
763 | * so we avoid the resolver overhead on the real | |
764 | * execvp call. | |
765 | */ | |
766 | execvp("", (char **)argv); | |
767 | ||
768 | /* | |
769 | * Tell the parent we're ready to go | |
770 | */ | |
771 | close(child_ready_pipe[1]); | |
772 | ||
773 | /* | |
774 | * Wait until the parent tells us to go. | |
775 | */ | |
776 | if (read(go_pipe[0], &bf, 1) == -1) | |
777 | perror("unable to read pipe"); | |
778 | ||
779 | execvp(argv[0], (char **)argv); | |
780 | ||
781 | perror(argv[0]); | |
782 | kill(getppid(), SIGUSR1); | |
783 | exit(-1); | |
784 | } | |
785 | ||
d67356e7 | 786 | if (perf_target__none(&opts->target)) |
35b9d88e ACM |
787 | evlist->threads->map[0] = evlist->workload.pid; |
788 | ||
789 | close(child_ready_pipe[1]); | |
790 | close(go_pipe[0]); | |
791 | /* | |
792 | * wait for child to settle | |
793 | */ | |
794 | if (read(child_ready_pipe[0], &bf, 1) == -1) { | |
795 | perror("unable to read pipe"); | |
796 | goto out_close_pipes; | |
797 | } | |
798 | ||
799 | evlist->workload.cork_fd = go_pipe[1]; | |
800 | close(child_ready_pipe[0]); | |
801 | return 0; | |
802 | ||
803 | out_close_pipes: | |
804 | close(go_pipe[0]); | |
805 | close(go_pipe[1]); | |
806 | out_close_ready_pipe: | |
807 | close(child_ready_pipe[0]); | |
808 | close(child_ready_pipe[1]); | |
809 | return -1; | |
810 | } | |
811 | ||
812 | int perf_evlist__start_workload(struct perf_evlist *evlist) | |
813 | { | |
814 | if (evlist->workload.cork_fd > 0) { | |
815 | /* | |
816 | * Remove the cork, let it rip! | |
817 | */ | |
818 | return close(evlist->workload.cork_fd); | |
819 | } | |
820 | ||
821 | return 0; | |
822 | } | |
cb0b29e0 | 823 | |
a3f698fe | 824 | int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *event, |
0807d2d8 | 825 | struct perf_sample *sample) |
cb0b29e0 | 826 | { |
0c21f736 | 827 | struct perf_evsel *evsel = perf_evlist__first(evlist); |
0807d2d8 | 828 | return perf_evsel__parse_sample(evsel, event, sample); |
cb0b29e0 | 829 | } |
78f067b3 ACM |
830 | |
831 | size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp) | |
832 | { | |
833 | struct perf_evsel *evsel; | |
834 | size_t printed = 0; | |
835 | ||
836 | list_for_each_entry(evsel, &evlist->entries, node) { | |
837 | printed += fprintf(fp, "%s%s", evsel->idx ? ", " : "", | |
838 | perf_evsel__name(evsel)); | |
839 | } | |
840 | ||
841 | return printed + fprintf(fp, "\n");; | |
842 | } |