Commit | Line | Data |
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91007045 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
f8a95309 ACM |
2 | /* |
3 | * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> | |
4 | * | |
5 | * Parts came from builtin-{top,stat,record}.c, see those files for further | |
6 | * copyright notes. | |
f8a95309 | 7 | */ |
956fa571 | 8 | #include <api/fs/fs.h> |
a43783ae | 9 | #include <errno.h> |
fd20e811 | 10 | #include <inttypes.h> |
5c581041 | 11 | #include <poll.h> |
f8a95309 | 12 | #include "cpumap.h" |
e0fcfb08 | 13 | #include "util/mmap.h" |
f8a95309 | 14 | #include "thread_map.h" |
12864b31 | 15 | #include "target.h" |
361c99a6 ACM |
16 | #include "evlist.h" |
17 | #include "evsel.h" | |
e3e1a54f | 18 | #include "debug.h" |
58db1d6e | 19 | #include "units.h" |
20f2be1d | 20 | #include <internal/lib.h> // page_size |
7736627b | 21 | #include "affinity.h" |
c1a604df | 22 | #include "../perf.h" |
54cc54de | 23 | #include "asm/bug.h" |
657ee553 | 24 | #include "bpf-event.h" |
da949f50 | 25 | #include "util/string2.h" |
40c7d246 | 26 | #include "util/perf_api_probe.h" |
9607ad3a | 27 | #include <signal.h> |
35b9d88e | 28 | #include <unistd.h> |
b397f846 | 29 | #include <sched.h> |
f2a39fe8 | 30 | #include <stdlib.h> |
361c99a6 | 31 | |
50d08e47 | 32 | #include "parse-events.h" |
4b6ab94e | 33 | #include <subcmd/parse-options.h> |
50d08e47 | 34 | |
bafae98e | 35 | #include <fcntl.h> |
86a5e0c2 | 36 | #include <sys/ioctl.h> |
f8a95309 ACM |
37 | #include <sys/mman.h> |
38 | ||
70db7533 ACM |
39 | #include <linux/bitops.h> |
40 | #include <linux/hash.h> | |
0389cd1f | 41 | #include <linux/log2.h> |
8dd2a131 | 42 | #include <linux/err.h> |
8520a98d | 43 | #include <linux/string.h> |
7f7c536f | 44 | #include <linux/zalloc.h> |
4562a739 | 45 | #include <perf/evlist.h> |
88761fa1 | 46 | #include <perf/evsel.h> |
9c3516d1 | 47 | #include <perf/cpumap.h> |
7728fa0c | 48 | #include <perf/mmap.h> |
70db7533 | 49 | |
e14e5497 ACM |
50 | #include <internal/xyarray.h> |
51 | ||
748fe088 ACM |
52 | #ifdef LACKS_SIGQUEUE_PROTOTYPE |
53 | int sigqueue(pid_t pid, int sig, const union sigval value); | |
54 | #endif | |
55 | ||
9dfcb759 | 56 | #define FD(e, x, y) (*(int *)xyarray__entry(e->core.fd, x, y)) |
8cd36f3e | 57 | #define SID(e, x, y) xyarray__entry(e->core.sample_id, x, y) |
f8a95309 | 58 | |
52c86bca JO |
59 | void evlist__init(struct evlist *evlist, struct perf_cpu_map *cpus, |
60 | struct perf_thread_map *threads) | |
ef1d1af2 | 61 | { |
4562a739 | 62 | perf_evlist__init(&evlist->core); |
453fa030 | 63 | perf_evlist__set_maps(&evlist->core, cpus, threads); |
35b9d88e | 64 | evlist->workload.pid = -1; |
54cc54de | 65 | evlist->bkw_mmap_state = BKW_MMAP_NOTREADY; |
8ab705b5 AB |
66 | evlist->ctl_fd.fd = -1; |
67 | evlist->ctl_fd.ack = -1; | |
68 | evlist->ctl_fd.pos = -1; | |
ef1d1af2 ACM |
69 | } |
70 | ||
0f98b11c | 71 | struct evlist *evlist__new(void) |
361c99a6 | 72 | { |
63503dba | 73 | struct evlist *evlist = zalloc(sizeof(*evlist)); |
361c99a6 | 74 | |
ef1d1af2 | 75 | if (evlist != NULL) |
52c86bca | 76 | evlist__init(evlist, NULL, NULL); |
361c99a6 ACM |
77 | |
78 | return evlist; | |
79 | } | |
80 | ||
63503dba | 81 | struct evlist *perf_evlist__new_default(void) |
b22d54b0 | 82 | { |
0f98b11c | 83 | struct evlist *evlist = evlist__new(); |
b22d54b0 | 84 | |
e251abee | 85 | if (evlist && evlist__add_default(evlist)) { |
c12995a5 | 86 | evlist__delete(evlist); |
b22d54b0 JO |
87 | evlist = NULL; |
88 | } | |
89 | ||
90 | return evlist; | |
91 | } | |
92 | ||
63503dba | 93 | struct evlist *perf_evlist__new_dummy(void) |
5bae0250 | 94 | { |
0f98b11c | 95 | struct evlist *evlist = evlist__new(); |
5bae0250 | 96 | |
e251abee | 97 | if (evlist && evlist__add_dummy(evlist)) { |
c12995a5 | 98 | evlist__delete(evlist); |
5bae0250 ACM |
99 | evlist = NULL; |
100 | } | |
101 | ||
102 | return evlist; | |
103 | } | |
104 | ||
75562573 AH |
105 | /** |
106 | * perf_evlist__set_id_pos - set the positions of event ids. | |
107 | * @evlist: selected event list | |
108 | * | |
109 | * Events with compatible sample types all have the same id_pos | |
110 | * and is_pos. For convenience, put a copy on evlist. | |
111 | */ | |
63503dba | 112 | void perf_evlist__set_id_pos(struct evlist *evlist) |
75562573 | 113 | { |
515dbe48 | 114 | struct evsel *first = evlist__first(evlist); |
75562573 AH |
115 | |
116 | evlist->id_pos = first->id_pos; | |
117 | evlist->is_pos = first->is_pos; | |
118 | } | |
119 | ||
63503dba | 120 | static void perf_evlist__update_id_pos(struct evlist *evlist) |
733cd2fe | 121 | { |
32dcd021 | 122 | struct evsel *evsel; |
733cd2fe | 123 | |
e5cadb93 | 124 | evlist__for_each_entry(evlist, evsel) |
4b5e87b7 | 125 | evsel__calc_id_pos(evsel); |
733cd2fe AH |
126 | |
127 | perf_evlist__set_id_pos(evlist); | |
128 | } | |
129 | ||
e6b1878d | 130 | static void evlist__purge(struct evlist *evlist) |
361c99a6 | 131 | { |
32dcd021 | 132 | struct evsel *pos, *n; |
361c99a6 | 133 | |
e5cadb93 | 134 | evlist__for_each_entry_safe(evlist, n, pos) { |
b27c4ece | 135 | list_del_init(&pos->core.node); |
d49e4695 | 136 | pos->evlist = NULL; |
5eb2dd2a | 137 | evsel__delete(pos); |
361c99a6 ACM |
138 | } |
139 | ||
6484d2f9 | 140 | evlist->core.nr_entries = 0; |
361c99a6 ACM |
141 | } |
142 | ||
470579b0 | 143 | void evlist__exit(struct evlist *evlist) |
361c99a6 | 144 | { |
04662523 | 145 | zfree(&evlist->mmap); |
0b72d69a | 146 | zfree(&evlist->overwrite_mmap); |
93dd6e28 | 147 | perf_evlist__exit(&evlist->core); |
ef1d1af2 ACM |
148 | } |
149 | ||
c12995a5 | 150 | void evlist__delete(struct evlist *evlist) |
ef1d1af2 | 151 | { |
0b04b3dc ACM |
152 | if (evlist == NULL) |
153 | return; | |
154 | ||
db6b7b13 | 155 | evlist__munmap(evlist); |
750b4ede | 156 | evlist__close(evlist); |
e6b1878d | 157 | evlist__purge(evlist); |
470579b0 | 158 | evlist__exit(evlist); |
361c99a6 ACM |
159 | free(evlist); |
160 | } | |
161 | ||
a1cf3a75 | 162 | void evlist__add(struct evlist *evlist, struct evsel *entry) |
361c99a6 | 163 | { |
d49e4695 | 164 | entry->evlist = evlist; |
6484d2f9 | 165 | entry->idx = evlist->core.nr_entries; |
60b0896c | 166 | entry->tracking = !entry->idx; |
ef503831 | 167 | |
6484d2f9 JO |
168 | perf_evlist__add(&evlist->core, &entry->core); |
169 | ||
170 | if (evlist->core.nr_entries == 1) | |
75562573 | 171 | perf_evlist__set_id_pos(evlist); |
361c99a6 ACM |
172 | } |
173 | ||
16251027 | 174 | void evlist__remove(struct evlist *evlist, struct evsel *evsel) |
4768230a AH |
175 | { |
176 | evsel->evlist = NULL; | |
52e22fb8 | 177 | perf_evlist__remove(&evlist->core, &evsel->core); |
4768230a AH |
178 | } |
179 | ||
63503dba | 180 | void perf_evlist__splice_list_tail(struct evlist *evlist, |
f114d6ef | 181 | struct list_head *list) |
50d08e47 | 182 | { |
32dcd021 | 183 | struct evsel *evsel, *temp; |
75562573 | 184 | |
e5cadb93 | 185 | __evlist__for_each_entry_safe(list, temp, evsel) { |
b27c4ece | 186 | list_del_init(&evsel->core.node); |
a1cf3a75 | 187 | evlist__add(evlist, evsel); |
f114d6ef | 188 | } |
50d08e47 ACM |
189 | } |
190 | ||
c0e53476 ACM |
191 | int __evlist__set_tracepoints_handlers(struct evlist *evlist, |
192 | const struct evsel_str_handler *assocs, size_t nr_assocs) | |
193 | { | |
194 | struct evsel *evsel; | |
195 | size_t i; | |
196 | int err; | |
197 | ||
198 | for (i = 0; i < nr_assocs; i++) { | |
199 | // Adding a handler for an event not in this evlist, just ignore it. | |
200 | evsel = perf_evlist__find_tracepoint_by_name(evlist, assocs[i].name); | |
201 | if (evsel == NULL) | |
202 | continue; | |
203 | ||
204 | err = -EEXIST; | |
205 | if (evsel->handler != NULL) | |
206 | goto out; | |
207 | evsel->handler = assocs[i].handler; | |
208 | } | |
209 | ||
210 | err = 0; | |
211 | out: | |
212 | return err; | |
213 | } | |
214 | ||
63dab225 ACM |
215 | void __perf_evlist__set_leader(struct list_head *list) |
216 | { | |
32dcd021 | 217 | struct evsel *evsel, *leader; |
63dab225 | 218 | |
b27c4ece JO |
219 | leader = list_entry(list->next, struct evsel, core.node); |
220 | evsel = list_entry(list->prev, struct evsel, core.node); | |
97f63e4a | 221 | |
5643b1a5 | 222 | leader->core.nr_members = evsel->idx - leader->idx + 1; |
63dab225 | 223 | |
e5cadb93 | 224 | __evlist__for_each_entry(list, evsel) { |
74b2133d | 225 | evsel->leader = leader; |
63dab225 ACM |
226 | } |
227 | } | |
228 | ||
63503dba | 229 | void perf_evlist__set_leader(struct evlist *evlist) |
6a4bb04c | 230 | { |
6484d2f9 JO |
231 | if (evlist->core.nr_entries) { |
232 | evlist->nr_groups = evlist->core.nr_entries > 1 ? 1 : 0; | |
ce9036a6 | 233 | __perf_evlist__set_leader(&evlist->core.entries); |
97f63e4a | 234 | } |
6a4bb04c JO |
235 | } |
236 | ||
e251abee | 237 | int __evlist__add_default(struct evlist *evlist, bool precise) |
361c99a6 | 238 | { |
8f6725a2 | 239 | struct evsel *evsel = evsel__new_cycles(precise); |
1aed2671 | 240 | |
361c99a6 | 241 | if (evsel == NULL) |
7c48dcfd | 242 | return -ENOMEM; |
361c99a6 | 243 | |
a1cf3a75 | 244 | evlist__add(evlist, evsel); |
361c99a6 ACM |
245 | return 0; |
246 | } | |
5c581041 | 247 | |
e251abee | 248 | int evlist__add_dummy(struct evlist *evlist) |
5bae0250 ACM |
249 | { |
250 | struct perf_event_attr attr = { | |
251 | .type = PERF_TYPE_SOFTWARE, | |
252 | .config = PERF_COUNT_SW_DUMMY, | |
253 | .size = sizeof(attr), /* to capture ABI version */ | |
254 | }; | |
8f6725a2 | 255 | struct evsel *evsel = evsel__new_idx(&attr, evlist->core.nr_entries); |
5bae0250 ACM |
256 | |
257 | if (evsel == NULL) | |
258 | return -ENOMEM; | |
259 | ||
a1cf3a75 | 260 | evlist__add(evlist, evsel); |
5bae0250 ACM |
261 | return 0; |
262 | } | |
263 | ||
e251abee | 264 | static int evlist__add_attrs(struct evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs) |
50d08e47 | 265 | { |
32dcd021 | 266 | struct evsel *evsel, *n; |
50d08e47 ACM |
267 | LIST_HEAD(head); |
268 | size_t i; | |
269 | ||
270 | for (i = 0; i < nr_attrs; i++) { | |
8f6725a2 | 271 | evsel = evsel__new_idx(attrs + i, evlist->core.nr_entries + i); |
50d08e47 ACM |
272 | if (evsel == NULL) |
273 | goto out_delete_partial_list; | |
b27c4ece | 274 | list_add_tail(&evsel->core.node, &head); |
50d08e47 ACM |
275 | } |
276 | ||
f114d6ef | 277 | perf_evlist__splice_list_tail(evlist, &head); |
50d08e47 ACM |
278 | |
279 | return 0; | |
280 | ||
281 | out_delete_partial_list: | |
e5cadb93 | 282 | __evlist__for_each_entry_safe(&head, n, evsel) |
5eb2dd2a | 283 | evsel__delete(evsel); |
50d08e47 ACM |
284 | return -1; |
285 | } | |
286 | ||
e251abee | 287 | int __evlist__add_default_attrs(struct evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs) |
79695e1b ACM |
288 | { |
289 | size_t i; | |
290 | ||
291 | for (i = 0; i < nr_attrs; i++) | |
292 | event_attr_init(attrs + i); | |
293 | ||
a1cf3a75 | 294 | return evlist__add_attrs(evlist, attrs, nr_attrs); |
79695e1b ACM |
295 | } |
296 | ||
32dcd021 | 297 | struct evsel * |
63503dba | 298 | perf_evlist__find_tracepoint_by_id(struct evlist *evlist, int id) |
ee29be62 | 299 | { |
32dcd021 | 300 | struct evsel *evsel; |
ee29be62 | 301 | |
e5cadb93 | 302 | evlist__for_each_entry(evlist, evsel) { |
1fc632ce JO |
303 | if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT && |
304 | (int)evsel->core.attr.config == id) | |
ee29be62 ACM |
305 | return evsel; |
306 | } | |
307 | ||
308 | return NULL; | |
309 | } | |
310 | ||
32dcd021 | 311 | struct evsel * |
63503dba | 312 | perf_evlist__find_tracepoint_by_name(struct evlist *evlist, |
a2f2804a DA |
313 | const char *name) |
314 | { | |
32dcd021 | 315 | struct evsel *evsel; |
a2f2804a | 316 | |
e5cadb93 | 317 | evlist__for_each_entry(evlist, evsel) { |
1fc632ce | 318 | if ((evsel->core.attr.type == PERF_TYPE_TRACEPOINT) && |
a2f2804a DA |
319 | (strcmp(evsel->name, name) == 0)) |
320 | return evsel; | |
321 | } | |
322 | ||
323 | return NULL; | |
324 | } | |
325 | ||
e251abee | 326 | int evlist__add_newtp(struct evlist *evlist, const char *sys, const char *name, void *handler) |
39876e7d | 327 | { |
8f6725a2 | 328 | struct evsel *evsel = evsel__newtp(sys, name); |
39876e7d | 329 | |
8dd2a131 | 330 | if (IS_ERR(evsel)) |
39876e7d ACM |
331 | return -1; |
332 | ||
744a9719 | 333 | evsel->handler = handler; |
a1cf3a75 | 334 | evlist__add(evlist, evsel); |
39876e7d ACM |
335 | return 0; |
336 | } | |
337 | ||
63503dba | 338 | static int perf_evlist__nr_threads(struct evlist *evlist, |
32dcd021 | 339 | struct evsel *evsel) |
bf8e8f4b | 340 | { |
648b5af3 | 341 | if (evsel->core.system_wide) |
bf8e8f4b AH |
342 | return 1; |
343 | else | |
a2f354e3 | 344 | return perf_thread_map__nr(evlist->core.threads); |
bf8e8f4b AH |
345 | } |
346 | ||
a8cbe40f AK |
347 | void evlist__cpu_iter_start(struct evlist *evlist) |
348 | { | |
349 | struct evsel *pos; | |
350 | ||
351 | /* | |
352 | * Reset the per evsel cpu_iter. This is needed because | |
353 | * each evsel's cpumap may have a different index space, | |
354 | * and some operations need the index to modify | |
355 | * the FD xyarray (e.g. open, close) | |
356 | */ | |
357 | evlist__for_each_entry(evlist, pos) | |
358 | pos->cpu_iter = 0; | |
359 | } | |
360 | ||
361 | bool evsel__cpu_iter_skip_no_inc(struct evsel *ev, int cpu) | |
362 | { | |
363 | if (ev->cpu_iter >= ev->core.cpus->nr) | |
364 | return true; | |
365 | if (cpu >= 0 && ev->core.cpus->map[ev->cpu_iter] != cpu) | |
366 | return true; | |
367 | return false; | |
368 | } | |
369 | ||
370 | bool evsel__cpu_iter_skip(struct evsel *ev, int cpu) | |
371 | { | |
372 | if (!evsel__cpu_iter_skip_no_inc(ev, cpu)) { | |
373 | ev->cpu_iter++; | |
374 | return false; | |
375 | } | |
376 | return true; | |
377 | } | |
378 | ||
e74676de | 379 | void evlist__disable(struct evlist *evlist) |
4152ab37 | 380 | { |
32dcd021 | 381 | struct evsel *pos; |
704e2f5b | 382 | struct affinity affinity; |
87cf8360 AH |
383 | int cpu, i, imm = 0; |
384 | bool has_imm = false; | |
3e27c920 | 385 | |
704e2f5b AK |
386 | if (affinity__setup(&affinity) < 0) |
387 | return; | |
388 | ||
87cf8360 AH |
389 | /* Disable 'immediate' events last */ |
390 | for (imm = 0; imm <= 1; imm++) { | |
391 | evlist__for_each_cpu(evlist, i, cpu) { | |
392 | affinity__set(&affinity, cpu); | |
393 | ||
394 | evlist__for_each_entry(evlist, pos) { | |
395 | if (evsel__cpu_iter_skip(pos, cpu)) | |
396 | continue; | |
397 | if (pos->disabled || !evsel__is_group_leader(pos) || !pos->core.fd) | |
398 | continue; | |
399 | if (pos->immediate) | |
400 | has_imm = true; | |
401 | if (pos->immediate != imm) | |
402 | continue; | |
403 | evsel__disable_cpu(pos, pos->cpu_iter - 1); | |
404 | } | |
704e2f5b | 405 | } |
87cf8360 AH |
406 | if (!has_imm) |
407 | break; | |
704e2f5b | 408 | } |
87cf8360 | 409 | |
704e2f5b | 410 | affinity__cleanup(&affinity); |
e5cadb93 | 411 | evlist__for_each_entry(evlist, pos) { |
c754c382 | 412 | if (!evsel__is_group_leader(pos) || !pos->core.fd) |
3e27c920 | 413 | continue; |
704e2f5b | 414 | pos->disabled = true; |
4152ab37 | 415 | } |
2b56bcfb ACM |
416 | |
417 | evlist->enabled = false; | |
4152ab37 ACM |
418 | } |
419 | ||
1c87f165 | 420 | void evlist__enable(struct evlist *evlist) |
764e16a3 | 421 | { |
32dcd021 | 422 | struct evsel *pos; |
704e2f5b AK |
423 | struct affinity affinity; |
424 | int cpu, i; | |
3e27c920 | 425 | |
704e2f5b AK |
426 | if (affinity__setup(&affinity) < 0) |
427 | return; | |
428 | ||
429 | evlist__for_each_cpu(evlist, i, cpu) { | |
430 | affinity__set(&affinity, cpu); | |
431 | ||
432 | evlist__for_each_entry(evlist, pos) { | |
433 | if (evsel__cpu_iter_skip(pos, cpu)) | |
434 | continue; | |
c754c382 | 435 | if (!evsel__is_group_leader(pos) || !pos->core.fd) |
704e2f5b AK |
436 | continue; |
437 | evsel__enable_cpu(pos, pos->cpu_iter - 1); | |
438 | } | |
439 | } | |
440 | affinity__cleanup(&affinity); | |
e5cadb93 | 441 | evlist__for_each_entry(evlist, pos) { |
c754c382 | 442 | if (!evsel__is_group_leader(pos) || !pos->core.fd) |
3e27c920 | 443 | continue; |
704e2f5b | 444 | pos->disabled = false; |
764e16a3 | 445 | } |
2b56bcfb ACM |
446 | |
447 | evlist->enabled = true; | |
448 | } | |
449 | ||
63503dba | 450 | void perf_evlist__toggle_enable(struct evlist *evlist) |
2b56bcfb | 451 | { |
e74676de | 452 | (evlist->enabled ? evlist__disable : evlist__enable)(evlist); |
764e16a3 DA |
453 | } |
454 | ||
63503dba | 455 | static int perf_evlist__enable_event_cpu(struct evlist *evlist, |
32dcd021 | 456 | struct evsel *evsel, int cpu) |
1c65056c | 457 | { |
18ef15c6 | 458 | int thread; |
1c65056c AH |
459 | int nr_threads = perf_evlist__nr_threads(evlist, evsel); |
460 | ||
9dfcb759 | 461 | if (!evsel->core.fd) |
1c65056c AH |
462 | return -EINVAL; |
463 | ||
464 | for (thread = 0; thread < nr_threads; thread++) { | |
18ef15c6 | 465 | int err = ioctl(FD(evsel, cpu, thread), PERF_EVENT_IOC_ENABLE, 0); |
1c65056c AH |
466 | if (err) |
467 | return err; | |
468 | } | |
469 | return 0; | |
470 | } | |
471 | ||
63503dba | 472 | static int perf_evlist__enable_event_thread(struct evlist *evlist, |
32dcd021 | 473 | struct evsel *evsel, |
1c65056c AH |
474 | int thread) |
475 | { | |
18ef15c6 | 476 | int cpu; |
6549cd8f | 477 | int nr_cpus = perf_cpu_map__nr(evlist->core.cpus); |
1c65056c | 478 | |
9dfcb759 | 479 | if (!evsel->core.fd) |
1c65056c AH |
480 | return -EINVAL; |
481 | ||
482 | for (cpu = 0; cpu < nr_cpus; cpu++) { | |
18ef15c6 | 483 | int err = ioctl(FD(evsel, cpu, thread), PERF_EVENT_IOC_ENABLE, 0); |
1c65056c AH |
484 | if (err) |
485 | return err; | |
486 | } | |
487 | return 0; | |
488 | } | |
489 | ||
63503dba | 490 | int perf_evlist__enable_event_idx(struct evlist *evlist, |
32dcd021 | 491 | struct evsel *evsel, int idx) |
1c65056c | 492 | { |
315c0a1f | 493 | bool per_cpu_mmaps = !perf_cpu_map__empty(evlist->core.cpus); |
1c65056c AH |
494 | |
495 | if (per_cpu_mmaps) | |
496 | return perf_evlist__enable_event_cpu(evlist, evsel, idx); | |
497 | else | |
498 | return perf_evlist__enable_event_thread(evlist, evsel, idx); | |
499 | } | |
500 | ||
f4009e7b | 501 | int evlist__add_pollfd(struct evlist *evlist, int fd) |
70082dd9 | 502 | { |
ab4c1f9f | 503 | return perf_evlist__add_pollfd(&evlist->core, fd, NULL, POLLIN, fdarray_flag__default); |
e4b356b5 ACM |
504 | } |
505 | ||
f4009e7b | 506 | int evlist__filter_pollfd(struct evlist *evlist, short revents_and_mask) |
1ddec7f0 | 507 | { |
84227cb1 | 508 | return perf_evlist__filter_pollfd(&evlist->core, revents_and_mask); |
1ddec7f0 ACM |
509 | } |
510 | ||
80ab2987 | 511 | int evlist__poll(struct evlist *evlist, int timeout) |
f66a889d | 512 | { |
80ab2987 | 513 | return perf_evlist__poll(&evlist->core, timeout); |
f66a889d ACM |
514 | } |
515 | ||
63503dba | 516 | struct perf_sample_id *perf_evlist__id2sid(struct evlist *evlist, u64 id) |
70db7533 ACM |
517 | { |
518 | struct hlist_head *head; | |
70db7533 ACM |
519 | struct perf_sample_id *sid; |
520 | int hash; | |
521 | ||
70db7533 | 522 | hash = hash_64(id, PERF_EVLIST__HLIST_BITS); |
1d5af02d | 523 | head = &evlist->core.heads[hash]; |
70db7533 | 524 | |
b67bfe0d | 525 | hlist_for_each_entry(sid, head, node) |
70db7533 | 526 | if (sid->id == id) |
932a3594 JO |
527 | return sid; |
528 | ||
529 | return NULL; | |
530 | } | |
531 | ||
63503dba | 532 | struct evsel *perf_evlist__id2evsel(struct evlist *evlist, u64 id) |
932a3594 JO |
533 | { |
534 | struct perf_sample_id *sid; | |
535 | ||
6484d2f9 | 536 | if (evlist->core.nr_entries == 1 || !id) |
515dbe48 | 537 | return evlist__first(evlist); |
932a3594 JO |
538 | |
539 | sid = perf_evlist__id2sid(evlist, id); | |
540 | if (sid) | |
70c20369 | 541 | return container_of(sid->evsel, struct evsel, core); |
30e68bcc | 542 | |
8cedf3a5 | 543 | if (!evlist__sample_id_all(evlist)) |
515dbe48 | 544 | return evlist__first(evlist); |
30e68bcc | 545 | |
70db7533 ACM |
546 | return NULL; |
547 | } | |
04391deb | 548 | |
63503dba | 549 | struct evsel *perf_evlist__id2evsel_strict(struct evlist *evlist, |
dddcf6ab AH |
550 | u64 id) |
551 | { | |
552 | struct perf_sample_id *sid; | |
553 | ||
554 | if (!id) | |
555 | return NULL; | |
556 | ||
557 | sid = perf_evlist__id2sid(evlist, id); | |
558 | if (sid) | |
70c20369 | 559 | return container_of(sid->evsel, struct evsel, core); |
dddcf6ab AH |
560 | |
561 | return NULL; | |
562 | } | |
563 | ||
63503dba | 564 | static int perf_evlist__event2id(struct evlist *evlist, |
75562573 AH |
565 | union perf_event *event, u64 *id) |
566 | { | |
b1fcd190 | 567 | const __u64 *array = event->sample.array; |
75562573 AH |
568 | ssize_t n; |
569 | ||
570 | n = (event->header.size - sizeof(event->header)) >> 3; | |
571 | ||
572 | if (event->header.type == PERF_RECORD_SAMPLE) { | |
573 | if (evlist->id_pos >= n) | |
574 | return -1; | |
575 | *id = array[evlist->id_pos]; | |
576 | } else { | |
577 | if (evlist->is_pos > n) | |
578 | return -1; | |
579 | n -= evlist->is_pos; | |
580 | *id = array[n]; | |
581 | } | |
582 | return 0; | |
583 | } | |
584 | ||
63503dba | 585 | struct evsel *perf_evlist__event2evsel(struct evlist *evlist, |
7cb5c5ac | 586 | union perf_event *event) |
75562573 | 587 | { |
515dbe48 | 588 | struct evsel *first = evlist__first(evlist); |
75562573 AH |
589 | struct hlist_head *head; |
590 | struct perf_sample_id *sid; | |
591 | int hash; | |
592 | u64 id; | |
593 | ||
6484d2f9 | 594 | if (evlist->core.nr_entries == 1) |
98be6966 AH |
595 | return first; |
596 | ||
1fc632ce | 597 | if (!first->core.attr.sample_id_all && |
98be6966 AH |
598 | event->header.type != PERF_RECORD_SAMPLE) |
599 | return first; | |
75562573 AH |
600 | |
601 | if (perf_evlist__event2id(evlist, event, &id)) | |
602 | return NULL; | |
603 | ||
604 | /* Synthesized events have an id of zero */ | |
605 | if (!id) | |
98be6966 | 606 | return first; |
75562573 AH |
607 | |
608 | hash = hash_64(id, PERF_EVLIST__HLIST_BITS); | |
1d5af02d | 609 | head = &evlist->core.heads[hash]; |
75562573 AH |
610 | |
611 | hlist_for_each_entry(sid, head, node) { | |
612 | if (sid->id == id) | |
70c20369 | 613 | return container_of(sid->evsel, struct evsel, core); |
75562573 AH |
614 | } |
615 | return NULL; | |
616 | } | |
617 | ||
63503dba | 618 | static int perf_evlist__set_paused(struct evlist *evlist, bool value) |
65aea233 WN |
619 | { |
620 | int i; | |
621 | ||
0b72d69a | 622 | if (!evlist->overwrite_mmap) |
078c3386 WN |
623 | return 0; |
624 | ||
c976ee11 | 625 | for (i = 0; i < evlist->core.nr_mmaps; i++) { |
2cf07b29 | 626 | int fd = evlist->overwrite_mmap[i].core.fd; |
65aea233 WN |
627 | int err; |
628 | ||
629 | if (fd < 0) | |
630 | continue; | |
631 | err = ioctl(fd, PERF_EVENT_IOC_PAUSE_OUTPUT, value ? 1 : 0); | |
632 | if (err) | |
633 | return err; | |
634 | } | |
635 | return 0; | |
636 | } | |
637 | ||
63503dba | 638 | static int perf_evlist__pause(struct evlist *evlist) |
65aea233 WN |
639 | { |
640 | return perf_evlist__set_paused(evlist, true); | |
641 | } | |
642 | ||
63503dba | 643 | static int perf_evlist__resume(struct evlist *evlist) |
65aea233 WN |
644 | { |
645 | return perf_evlist__set_paused(evlist, false); | |
646 | } | |
647 | ||
db6b7b13 | 648 | static void evlist__munmap_nofree(struct evlist *evlist) |
f8a95309 | 649 | { |
aece948f | 650 | int i; |
f8a95309 | 651 | |
b2cb615d | 652 | if (evlist->mmap) |
c976ee11 | 653 | for (i = 0; i < evlist->core.nr_mmaps; i++) |
80e53d11 | 654 | perf_mmap__munmap(&evlist->mmap[i].core); |
983874d1 | 655 | |
0b72d69a | 656 | if (evlist->overwrite_mmap) |
c976ee11 | 657 | for (i = 0; i < evlist->core.nr_mmaps; i++) |
80e53d11 | 658 | perf_mmap__munmap(&evlist->overwrite_mmap[i].core); |
a1f72618 | 659 | } |
aece948f | 660 | |
db6b7b13 | 661 | void evlist__munmap(struct evlist *evlist) |
a1f72618 | 662 | { |
db6b7b13 | 663 | evlist__munmap_nofree(evlist); |
04662523 | 664 | zfree(&evlist->mmap); |
0b72d69a | 665 | zfree(&evlist->overwrite_mmap); |
f8a95309 ACM |
666 | } |
667 | ||
80e53d11 JO |
668 | static void perf_mmap__unmap_cb(struct perf_mmap *map) |
669 | { | |
670 | struct mmap *m = container_of(map, struct mmap, core); | |
671 | ||
672 | mmap__munmap(m); | |
673 | } | |
674 | ||
d50cf361 JO |
675 | static struct mmap *evlist__alloc_mmap(struct evlist *evlist, |
676 | bool overwrite) | |
f8a95309 | 677 | { |
d4c6fb36 | 678 | int i; |
a5830532 | 679 | struct mmap *map; |
d4c6fb36 | 680 | |
c976ee11 | 681 | map = zalloc(evlist->core.nr_mmaps * sizeof(struct mmap)); |
8db6d6b1 WN |
682 | if (!map) |
683 | return NULL; | |
946ae1d4 | 684 | |
c976ee11 | 685 | for (i = 0; i < evlist->core.nr_mmaps; i++) { |
6eb65f7a JO |
686 | struct perf_mmap *prev = i ? &map[i - 1].core : NULL; |
687 | ||
4738ca30 ACM |
688 | /* |
689 | * When the perf_mmap() call is made we grab one refcount, plus | |
6afad54d | 690 | * one extra to let perf_mmap__consume() get the last |
4738ca30 ACM |
691 | * events after all real references (perf_mmap__get()) are |
692 | * dropped. | |
693 | * | |
694 | * Each PERF_EVENT_IOC_SET_OUTPUT points to this mmap and | |
695 | * thus does perf_mmap__get() on it. | |
696 | */ | |
6eb65f7a | 697 | perf_mmap__init(&map[i].core, prev, overwrite, perf_mmap__unmap_cb); |
4738ca30 | 698 | } |
353120b4 | 699 | |
8db6d6b1 | 700 | return map; |
f8a95309 ACM |
701 | } |
702 | ||
9abd2ab2 JO |
703 | static void |
704 | perf_evlist__mmap_cb_idx(struct perf_evlist *_evlist, | |
705 | struct perf_mmap_param *_mp, | |
706 | int idx, bool per_cpu) | |
707 | { | |
708 | struct evlist *evlist = container_of(_evlist, struct evlist, core); | |
709 | struct mmap_params *mp = container_of(_mp, struct mmap_params, core); | |
710 | ||
711 | auxtrace_mmap_params__set_idx(&mp->auxtrace_mp, evlist, idx, per_cpu); | |
712 | } | |
713 | ||
bb1b1885 JO |
714 | static struct perf_mmap* |
715 | perf_evlist__mmap_cb_get(struct perf_evlist *_evlist, bool overwrite, int idx) | |
716 | { | |
717 | struct evlist *evlist = container_of(_evlist, struct evlist, core); | |
3805e4f3 | 718 | struct mmap *maps; |
bb1b1885 | 719 | |
3805e4f3 | 720 | maps = overwrite ? evlist->overwrite_mmap : evlist->mmap; |
bb1b1885 | 721 | |
3805e4f3 JO |
722 | if (!maps) { |
723 | maps = evlist__alloc_mmap(evlist, overwrite); | |
724 | if (!maps) | |
725 | return NULL; | |
bb1b1885 | 726 | |
3805e4f3 | 727 | if (overwrite) { |
bb1b1885 JO |
728 | evlist->overwrite_mmap = maps; |
729 | if (evlist->bkw_mmap_state == BKW_MMAP_NOTREADY) | |
730 | perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_RUNNING); | |
3805e4f3 JO |
731 | } else { |
732 | evlist->mmap = maps; | |
bb1b1885 JO |
733 | } |
734 | } | |
735 | ||
736 | return &maps[idx].core; | |
737 | } | |
738 | ||
b80132b1 JO |
739 | static int |
740 | perf_evlist__mmap_cb_mmap(struct perf_mmap *_map, struct perf_mmap_param *_mp, | |
741 | int output, int cpu) | |
742 | { | |
743 | struct mmap *map = container_of(_map, struct mmap, core); | |
744 | struct mmap_params *mp = container_of(_mp, struct mmap_params, core); | |
745 | ||
746 | return mmap__mmap(map, mp, output, cpu); | |
747 | } | |
748 | ||
f5e7150c | 749 | unsigned long perf_event_mlock_kb_in_pages(void) |
994a1f78 | 750 | { |
f5e7150c ACM |
751 | unsigned long pages; |
752 | int max; | |
8185e881 | 753 | |
f5e7150c ACM |
754 | if (sysctl__read_int("kernel/perf_event_mlock_kb", &max) < 0) { |
755 | /* | |
756 | * Pick a once upon a time good value, i.e. things look | |
757 | * strange since we can't read a sysctl value, but lets not | |
758 | * die yet... | |
759 | */ | |
760 | max = 512; | |
761 | } else { | |
762 | max -= (page_size / 1024); | |
763 | } | |
8185e881 | 764 | |
f5e7150c ACM |
765 | pages = (max * 1024) / page_size; |
766 | if (!is_power_of_2(pages)) | |
767 | pages = rounddown_pow_of_two(pages); | |
768 | ||
769 | return pages; | |
770 | } | |
771 | ||
9521b5f2 | 772 | size_t evlist__mmap_size(unsigned long pages) |
f5e7150c ACM |
773 | { |
774 | if (pages == UINT_MAX) | |
775 | pages = perf_event_mlock_kb_in_pages(); | |
776 | else if (!is_power_of_2(pages)) | |
994a1f78 JO |
777 | return 0; |
778 | ||
779 | return (pages + 1) * page_size; | |
780 | } | |
781 | ||
33c2dcfd DA |
782 | static long parse_pages_arg(const char *str, unsigned long min, |
783 | unsigned long max) | |
994a1f78 | 784 | { |
2fbe4abe | 785 | unsigned long pages, val; |
27050f53 JO |
786 | static struct parse_tag tags[] = { |
787 | { .tag = 'B', .mult = 1 }, | |
788 | { .tag = 'K', .mult = 1 << 10 }, | |
789 | { .tag = 'M', .mult = 1 << 20 }, | |
790 | { .tag = 'G', .mult = 1 << 30 }, | |
791 | { .tag = 0 }, | |
792 | }; | |
994a1f78 | 793 | |
8973504b | 794 | if (str == NULL) |
33c2dcfd | 795 | return -EINVAL; |
8973504b | 796 | |
27050f53 | 797 | val = parse_tag_value(str, tags); |
2fbe4abe | 798 | if (val != (unsigned long) -1) { |
27050f53 JO |
799 | /* we got file size value */ |
800 | pages = PERF_ALIGN(val, page_size) / page_size; | |
27050f53 JO |
801 | } else { |
802 | /* we got pages count value */ | |
803 | char *eptr; | |
804 | pages = strtoul(str, &eptr, 10); | |
33c2dcfd DA |
805 | if (*eptr != '\0') |
806 | return -EINVAL; | |
994a1f78 JO |
807 | } |
808 | ||
2bcab6c1 | 809 | if (pages == 0 && min == 0) { |
33c2dcfd | 810 | /* leave number of pages at 0 */ |
1dbfa938 | 811 | } else if (!is_power_of_2(pages)) { |
9808143b JO |
812 | char buf[100]; |
813 | ||
33c2dcfd | 814 | /* round pages up to next power of 2 */ |
91529834 | 815 | pages = roundup_pow_of_two(pages); |
1dbfa938 AH |
816 | if (!pages) |
817 | return -EINVAL; | |
9808143b JO |
818 | |
819 | unit_number__scnprintf(buf, sizeof(buf), pages * page_size); | |
820 | pr_info("rounding mmap pages size to %s (%lu pages)\n", | |
821 | buf, pages); | |
2fbe4abe AH |
822 | } |
823 | ||
33c2dcfd DA |
824 | if (pages > max) |
825 | return -EINVAL; | |
826 | ||
827 | return pages; | |
828 | } | |
829 | ||
e9db1310 | 830 | int __perf_evlist__parse_mmap_pages(unsigned int *mmap_pages, const char *str) |
33c2dcfd | 831 | { |
33c2dcfd DA |
832 | unsigned long max = UINT_MAX; |
833 | long pages; | |
834 | ||
f5ae9c42 | 835 | if (max > SIZE_MAX / page_size) |
33c2dcfd DA |
836 | max = SIZE_MAX / page_size; |
837 | ||
838 | pages = parse_pages_arg(str, 1, max); | |
839 | if (pages < 0) { | |
840 | pr_err("Invalid argument for --mmap_pages/-m\n"); | |
994a1f78 JO |
841 | return -1; |
842 | } | |
843 | ||
844 | *mmap_pages = pages; | |
845 | return 0; | |
846 | } | |
847 | ||
e9db1310 AH |
848 | int perf_evlist__parse_mmap_pages(const struct option *opt, const char *str, |
849 | int unset __maybe_unused) | |
850 | { | |
851 | return __perf_evlist__parse_mmap_pages(opt->value, str); | |
852 | } | |
853 | ||
c83fa7f2 | 854 | /** |
9521b5f2 | 855 | * evlist__mmap_ex - Create mmaps to receive events. |
c83fa7f2 AH |
856 | * @evlist: list of events |
857 | * @pages: map length in pages | |
858 | * @overwrite: overwrite older events? | |
718c602d AH |
859 | * @auxtrace_pages - auxtrace map length in pages |
860 | * @auxtrace_overwrite - overwrite older auxtrace data? | |
f8a95309 | 861 | * |
c83fa7f2 | 862 | * If @overwrite is %false the user needs to signal event consumption using |
9521b5f2 | 863 | * perf_mmap__write_tail(). Using evlist__mmap_read() does this |
c83fa7f2 | 864 | * automatically. |
7e2ed097 | 865 | * |
718c602d AH |
866 | * Similarly, if @auxtrace_overwrite is %false the user needs to signal data |
867 | * consumption using auxtrace_mmap__write_tail(). | |
868 | * | |
c83fa7f2 | 869 | * Return: %0 on success, negative error code otherwise. |
f8a95309 | 870 | */ |
9521b5f2 | 871 | int evlist__mmap_ex(struct evlist *evlist, unsigned int pages, |
7a276ff6 | 872 | unsigned int auxtrace_pages, |
51255a8a AB |
873 | bool auxtrace_overwrite, int nr_cblocks, int affinity, int flush, |
874 | int comp_level) | |
f8a95309 | 875 | { |
71f566a3 WN |
876 | /* |
877 | * Delay setting mp.prot: set it before calling perf_mmap__mmap. | |
878 | * Its value is decided by evsel's write_backward. | |
879 | * So &mp should not be passed through const pointer. | |
880 | */ | |
e440979f JO |
881 | struct mmap_params mp = { |
882 | .nr_cblocks = nr_cblocks, | |
883 | .affinity = affinity, | |
884 | .flush = flush, | |
885 | .comp_level = comp_level | |
886 | }; | |
923d0f18 | 887 | struct perf_evlist_mmap_ops ops = { |
b80132b1 JO |
888 | .idx = perf_evlist__mmap_cb_idx, |
889 | .get = perf_evlist__mmap_cb_get, | |
890 | .mmap = perf_evlist__mmap_cb_mmap, | |
9abd2ab2 | 891 | }; |
50a682ce | 892 | |
f6fa4375 JO |
893 | evlist->core.mmap_len = evlist__mmap_size(pages); |
894 | pr_debug("mmap size %zuB\n", evlist->core.mmap_len); | |
f8a95309 | 895 | |
f6fa4375 | 896 | auxtrace_mmap_params__init(&mp.auxtrace_mp, evlist->core.mmap_len, |
718c602d AH |
897 | auxtrace_pages, auxtrace_overwrite); |
898 | ||
923d0f18 | 899 | return perf_evlist__mmap_ops(&evlist->core, &ops, &mp.core); |
f8a95309 | 900 | } |
7e2ed097 | 901 | |
9521b5f2 | 902 | int evlist__mmap(struct evlist *evlist, unsigned int pages) |
718c602d | 903 | { |
9521b5f2 | 904 | return evlist__mmap_ex(evlist, pages, 0, false, 0, PERF_AFFINITY_SYS, 1, 0); |
718c602d AH |
905 | } |
906 | ||
63503dba | 907 | int perf_evlist__create_maps(struct evlist *evlist, struct target *target) |
7e2ed097 | 908 | { |
147c508f | 909 | bool all_threads = (target->per_thread && target->system_wide); |
f854839b | 910 | struct perf_cpu_map *cpus; |
9749b90e | 911 | struct perf_thread_map *threads; |
7e2ed097 | 912 | |
147c508f JY |
913 | /* |
914 | * If specify '-a' and '--per-thread' to perf record, perf record | |
915 | * will override '--per-thread'. target->per_thread = false and | |
916 | * target->system_wide = true. | |
917 | * | |
918 | * If specify '--per-thread' only to perf record, | |
919 | * target->per_thread = true and target->system_wide = false. | |
920 | * | |
921 | * So target->per_thread && target->system_wide is false. | |
922 | * For perf record, thread_map__new_str doesn't call | |
923 | * thread_map__new_all_cpus. That will keep perf record's | |
924 | * current behavior. | |
925 | * | |
926 | * For perf stat, it allows the case that target->per_thread and | |
927 | * target->system_wide are all true. It means to collect system-wide | |
928 | * per-thread data. thread_map__new_str will call | |
929 | * thread_map__new_all_cpus to enumerate all threads. | |
930 | */ | |
73c0ca1e | 931 | threads = thread_map__new_str(target->pid, target->tid, target->uid, |
147c508f | 932 | all_threads); |
7e2ed097 | 933 | |
74bfd2b2 | 934 | if (!threads) |
7e2ed097 ACM |
935 | return -1; |
936 | ||
9c105fbc | 937 | if (target__uses_dummy_map(target)) |
397721e0 | 938 | cpus = perf_cpu_map__dummy_new(); |
879d77d0 | 939 | else |
9c3516d1 | 940 | cpus = perf_cpu_map__new(target->cpu_list); |
7e2ed097 | 941 | |
74bfd2b2 | 942 | if (!cpus) |
7e2ed097 ACM |
943 | goto out_delete_threads; |
944 | ||
ec903f26 | 945 | evlist->core.has_user_cpus = !!target->cpu_list; |
ec9a77a7 | 946 | |
453fa030 | 947 | perf_evlist__set_maps(&evlist->core, cpus, threads); |
d5bc056e AH |
948 | |
949 | return 0; | |
7e2ed097 ACM |
950 | |
951 | out_delete_threads: | |
7836e52e | 952 | perf_thread_map__put(threads); |
7e2ed097 ACM |
953 | return -1; |
954 | } | |
955 | ||
63503dba | 956 | void __perf_evlist__set_sample_bit(struct evlist *evlist, |
22c8a376 ACM |
957 | enum perf_event_sample_format bit) |
958 | { | |
32dcd021 | 959 | struct evsel *evsel; |
22c8a376 | 960 | |
e5cadb93 | 961 | evlist__for_each_entry(evlist, evsel) |
862b2f8f | 962 | __evsel__set_sample_bit(evsel, bit); |
22c8a376 ACM |
963 | } |
964 | ||
63503dba | 965 | void __perf_evlist__reset_sample_bit(struct evlist *evlist, |
22c8a376 ACM |
966 | enum perf_event_sample_format bit) |
967 | { | |
32dcd021 | 968 | struct evsel *evsel; |
22c8a376 | 969 | |
e5cadb93 | 970 | evlist__for_each_entry(evlist, evsel) |
862b2f8f | 971 | __evsel__reset_sample_bit(evsel, bit); |
22c8a376 ACM |
972 | } |
973 | ||
63503dba | 974 | int perf_evlist__apply_filters(struct evlist *evlist, struct evsel **err_evsel) |
0a102479 | 975 | { |
32dcd021 | 976 | struct evsel *evsel; |
745cefc5 | 977 | int err = 0; |
0a102479 | 978 | |
e5cadb93 | 979 | evlist__for_each_entry(evlist, evsel) { |
745cefc5 | 980 | if (evsel->filter == NULL) |
0a102479 | 981 | continue; |
745cefc5 | 982 | |
d988d5ee KL |
983 | /* |
984 | * filters only work for tracepoint event, which doesn't have cpu limit. | |
985 | * So evlist and evsel should always be same. | |
986 | */ | |
a00571fd | 987 | err = perf_evsel__apply_filter(&evsel->core, evsel->filter); |
23d4aad4 ACM |
988 | if (err) { |
989 | *err_evsel = evsel; | |
745cefc5 | 990 | break; |
23d4aad4 | 991 | } |
0a102479 FW |
992 | } |
993 | ||
745cefc5 ACM |
994 | return err; |
995 | } | |
996 | ||
63503dba | 997 | int perf_evlist__set_tp_filter(struct evlist *evlist, const char *filter) |
745cefc5 | 998 | { |
32dcd021 | 999 | struct evsel *evsel; |
745cefc5 | 1000 | int err = 0; |
745cefc5 | 1001 | |
05cea449 ACM |
1002 | if (filter == NULL) |
1003 | return -1; | |
1004 | ||
e5cadb93 | 1005 | evlist__for_each_entry(evlist, evsel) { |
1fc632ce | 1006 | if (evsel->core.attr.type != PERF_TYPE_TRACEPOINT) |
fdf14720 WN |
1007 | continue; |
1008 | ||
ad681adf | 1009 | err = evsel__set_filter(evsel, filter); |
745cefc5 ACM |
1010 | if (err) |
1011 | break; | |
1012 | } | |
1013 | ||
1014 | return err; | |
0a102479 | 1015 | } |
74429964 | 1016 | |
53c92f73 ACM |
1017 | int perf_evlist__append_tp_filter(struct evlist *evlist, const char *filter) |
1018 | { | |
1019 | struct evsel *evsel; | |
1020 | int err = 0; | |
1021 | ||
1022 | if (filter == NULL) | |
1023 | return -1; | |
1024 | ||
1025 | evlist__for_each_entry(evlist, evsel) { | |
1026 | if (evsel->core.attr.type != PERF_TYPE_TRACEPOINT) | |
1027 | continue; | |
1028 | ||
ad681adf | 1029 | err = evsel__append_tp_filter(evsel, filter); |
53c92f73 ACM |
1030 | if (err) |
1031 | break; | |
1032 | } | |
1033 | ||
1034 | return err; | |
1035 | } | |
1036 | ||
da949f50 | 1037 | char *asprintf__tp_filter_pids(size_t npids, pid_t *pids) |
cfd70a26 ACM |
1038 | { |
1039 | char *filter; | |
be199ada | 1040 | size_t i; |
cfd70a26 | 1041 | |
be199ada ACM |
1042 | for (i = 0; i < npids; ++i) { |
1043 | if (i == 0) { | |
1044 | if (asprintf(&filter, "common_pid != %d", pids[i]) < 0) | |
05cea449 | 1045 | return NULL; |
be199ada ACM |
1046 | } else { |
1047 | char *tmp; | |
1048 | ||
1049 | if (asprintf(&tmp, "%s && common_pid != %d", filter, pids[i]) < 0) | |
1050 | goto out_free; | |
1051 | ||
1052 | free(filter); | |
1053 | filter = tmp; | |
1054 | } | |
1055 | } | |
cfd70a26 | 1056 | |
05cea449 | 1057 | return filter; |
be199ada | 1058 | out_free: |
05cea449 ACM |
1059 | free(filter); |
1060 | return NULL; | |
1061 | } | |
1062 | ||
1063 | int perf_evlist__set_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids) | |
1064 | { | |
1065 | char *filter = asprintf__tp_filter_pids(npids, pids); | |
1066 | int ret = perf_evlist__set_tp_filter(evlist, filter); | |
1067 | ||
cfd70a26 ACM |
1068 | free(filter); |
1069 | return ret; | |
1070 | } | |
1071 | ||
63503dba | 1072 | int perf_evlist__set_tp_filter_pid(struct evlist *evlist, pid_t pid) |
be199ada | 1073 | { |
7ad92a33 | 1074 | return perf_evlist__set_tp_filter_pids(evlist, 1, &pid); |
be199ada ACM |
1075 | } |
1076 | ||
1827ab5b ACM |
1077 | int perf_evlist__append_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids) |
1078 | { | |
1079 | char *filter = asprintf__tp_filter_pids(npids, pids); | |
1080 | int ret = perf_evlist__append_tp_filter(evlist, filter); | |
1081 | ||
1082 | free(filter); | |
1083 | return ret; | |
1084 | } | |
1085 | ||
1086 | int perf_evlist__append_tp_filter_pid(struct evlist *evlist, pid_t pid) | |
1087 | { | |
1088 | return perf_evlist__append_tp_filter_pids(evlist, 1, &pid); | |
1089 | } | |
1090 | ||
b3c2cc2b | 1091 | bool evlist__valid_sample_type(struct evlist *evlist) |
74429964 | 1092 | { |
32dcd021 | 1093 | struct evsel *pos; |
c2a70653 | 1094 | |
6484d2f9 | 1095 | if (evlist->core.nr_entries == 1) |
75562573 AH |
1096 | return true; |
1097 | ||
1098 | if (evlist->id_pos < 0 || evlist->is_pos < 0) | |
1099 | return false; | |
1100 | ||
e5cadb93 | 1101 | evlist__for_each_entry(evlist, pos) { |
75562573 AH |
1102 | if (pos->id_pos != evlist->id_pos || |
1103 | pos->is_pos != evlist->is_pos) | |
c2a70653 | 1104 | return false; |
74429964 FW |
1105 | } |
1106 | ||
c2a70653 | 1107 | return true; |
74429964 FW |
1108 | } |
1109 | ||
b3c2cc2b | 1110 | u64 __evlist__combined_sample_type(struct evlist *evlist) |
c2a70653 | 1111 | { |
32dcd021 | 1112 | struct evsel *evsel; |
75562573 AH |
1113 | |
1114 | if (evlist->combined_sample_type) | |
1115 | return evlist->combined_sample_type; | |
1116 | ||
e5cadb93 | 1117 | evlist__for_each_entry(evlist, evsel) |
1fc632ce | 1118 | evlist->combined_sample_type |= evsel->core.attr.sample_type; |
75562573 AH |
1119 | |
1120 | return evlist->combined_sample_type; | |
1121 | } | |
1122 | ||
b3c2cc2b | 1123 | u64 evlist__combined_sample_type(struct evlist *evlist) |
75562573 AH |
1124 | { |
1125 | evlist->combined_sample_type = 0; | |
b3c2cc2b | 1126 | return __evlist__combined_sample_type(evlist); |
c2a70653 ACM |
1127 | } |
1128 | ||
92c7d7cd | 1129 | u64 evlist__combined_branch_type(struct evlist *evlist) |
98df858e | 1130 | { |
32dcd021 | 1131 | struct evsel *evsel; |
98df858e AK |
1132 | u64 branch_type = 0; |
1133 | ||
e5cadb93 | 1134 | evlist__for_each_entry(evlist, evsel) |
1fc632ce | 1135 | branch_type |= evsel->core.attr.branch_sample_type; |
98df858e AK |
1136 | return branch_type; |
1137 | } | |
1138 | ||
63503dba | 1139 | bool perf_evlist__valid_read_format(struct evlist *evlist) |
9ede473c | 1140 | { |
515dbe48 | 1141 | struct evsel *first = evlist__first(evlist), *pos = first; |
1fc632ce JO |
1142 | u64 read_format = first->core.attr.read_format; |
1143 | u64 sample_type = first->core.attr.sample_type; | |
9ede473c | 1144 | |
e5cadb93 | 1145 | evlist__for_each_entry(evlist, pos) { |
94d3820f AH |
1146 | if (read_format != pos->core.attr.read_format) { |
1147 | pr_debug("Read format differs %#" PRIx64 " vs %#" PRIx64 "\n", | |
1148 | read_format, (u64)pos->core.attr.read_format); | |
1149 | } | |
9ede473c JO |
1150 | } |
1151 | ||
1152 | /* PERF_SAMPLE_READ imples PERF_FORMAT_ID. */ | |
1153 | if ((sample_type & PERF_SAMPLE_READ) && | |
1154 | !(read_format & PERF_FORMAT_ID)) { | |
1155 | return false; | |
1156 | } | |
1157 | ||
1158 | return true; | |
1159 | } | |
1160 | ||
63503dba | 1161 | u16 perf_evlist__id_hdr_size(struct evlist *evlist) |
81e36bff | 1162 | { |
515dbe48 | 1163 | struct evsel *first = evlist__first(evlist); |
81e36bff ACM |
1164 | struct perf_sample *data; |
1165 | u64 sample_type; | |
1166 | u16 size = 0; | |
1167 | ||
1fc632ce | 1168 | if (!first->core.attr.sample_id_all) |
81e36bff ACM |
1169 | goto out; |
1170 | ||
1fc632ce | 1171 | sample_type = first->core.attr.sample_type; |
81e36bff ACM |
1172 | |
1173 | if (sample_type & PERF_SAMPLE_TID) | |
1174 | size += sizeof(data->tid) * 2; | |
1175 | ||
1176 | if (sample_type & PERF_SAMPLE_TIME) | |
1177 | size += sizeof(data->time); | |
1178 | ||
1179 | if (sample_type & PERF_SAMPLE_ID) | |
1180 | size += sizeof(data->id); | |
1181 | ||
1182 | if (sample_type & PERF_SAMPLE_STREAM_ID) | |
1183 | size += sizeof(data->stream_id); | |
1184 | ||
1185 | if (sample_type & PERF_SAMPLE_CPU) | |
1186 | size += sizeof(data->cpu) * 2; | |
75562573 AH |
1187 | |
1188 | if (sample_type & PERF_SAMPLE_IDENTIFIER) | |
1189 | size += sizeof(data->id); | |
81e36bff ACM |
1190 | out: |
1191 | return size; | |
1192 | } | |
1193 | ||
8cedf3a5 | 1194 | bool evlist__valid_sample_id_all(struct evlist *evlist) |
74429964 | 1195 | { |
515dbe48 | 1196 | struct evsel *first = evlist__first(evlist), *pos = first; |
c2a70653 | 1197 | |
e5cadb93 | 1198 | evlist__for_each_entry_continue(evlist, pos) { |
1fc632ce | 1199 | if (first->core.attr.sample_id_all != pos->core.attr.sample_id_all) |
c2a70653 | 1200 | return false; |
74429964 FW |
1201 | } |
1202 | ||
c2a70653 ACM |
1203 | return true; |
1204 | } | |
1205 | ||
8cedf3a5 | 1206 | bool evlist__sample_id_all(struct evlist *evlist) |
c2a70653 | 1207 | { |
515dbe48 | 1208 | struct evsel *first = evlist__first(evlist); |
1fc632ce | 1209 | return first->core.attr.sample_id_all; |
74429964 | 1210 | } |
81cce8de | 1211 | |
63503dba | 1212 | void perf_evlist__set_selected(struct evlist *evlist, |
32dcd021 | 1213 | struct evsel *evsel) |
81cce8de ACM |
1214 | { |
1215 | evlist->selected = evsel; | |
1216 | } | |
727ab04e | 1217 | |
750b4ede | 1218 | void evlist__close(struct evlist *evlist) |
a74b4b66 | 1219 | { |
32dcd021 | 1220 | struct evsel *evsel; |
7736627b AK |
1221 | struct affinity affinity; |
1222 | int cpu, i; | |
a74b4b66 | 1223 | |
7736627b AK |
1224 | /* |
1225 | * With perf record core.cpus is usually NULL. | |
1226 | * Use the old method to handle this for now. | |
1227 | */ | |
1228 | if (!evlist->core.cpus) { | |
1229 | evlist__for_each_entry_reverse(evlist, evsel) | |
1230 | evsel__close(evsel); | |
1231 | return; | |
1232 | } | |
1233 | ||
1234 | if (affinity__setup(&affinity) < 0) | |
1235 | return; | |
1236 | evlist__for_each_cpu(evlist, i, cpu) { | |
1237 | affinity__set(&affinity, cpu); | |
1238 | ||
1239 | evlist__for_each_entry_reverse(evlist, evsel) { | |
1240 | if (evsel__cpu_iter_skip(evsel, cpu)) | |
1241 | continue; | |
1242 | perf_evsel__close_cpu(&evsel->core, evsel->cpu_iter - 1); | |
1243 | } | |
1244 | } | |
1245 | affinity__cleanup(&affinity); | |
1246 | evlist__for_each_entry_reverse(evlist, evsel) { | |
1247 | perf_evsel__free_fd(&evsel->core); | |
1248 | perf_evsel__free_id(&evsel->core); | |
1249 | } | |
a74b4b66 NK |
1250 | } |
1251 | ||
63503dba | 1252 | static int perf_evlist__create_syswide_maps(struct evlist *evlist) |
4112eb18 | 1253 | { |
f854839b | 1254 | struct perf_cpu_map *cpus; |
9749b90e | 1255 | struct perf_thread_map *threads; |
4112eb18 ACM |
1256 | int err = -ENOMEM; |
1257 | ||
1258 | /* | |
1259 | * Try reading /sys/devices/system/cpu/online to get | |
1260 | * an all cpus map. | |
1261 | * | |
1262 | * FIXME: -ENOMEM is the best we can do here, the cpu_map | |
1263 | * code needs an overhaul to properly forward the | |
1264 | * error, and we may not want to do that fallback to a | |
1265 | * default cpu identity map :-\ | |
1266 | */ | |
9c3516d1 | 1267 | cpus = perf_cpu_map__new(NULL); |
8c0498b6 | 1268 | if (!cpus) |
4112eb18 ACM |
1269 | goto out; |
1270 | ||
4b49cce2 | 1271 | threads = perf_thread_map__new_dummy(); |
8c0498b6 AH |
1272 | if (!threads) |
1273 | goto out_put; | |
4112eb18 | 1274 | |
453fa030 | 1275 | perf_evlist__set_maps(&evlist->core, cpus, threads); |
4112eb18 ACM |
1276 | out: |
1277 | return err; | |
8c0498b6 | 1278 | out_put: |
38f01d8d | 1279 | perf_cpu_map__put(cpus); |
4112eb18 ACM |
1280 | goto out; |
1281 | } | |
1282 | ||
474ddc4c | 1283 | int evlist__open(struct evlist *evlist) |
727ab04e | 1284 | { |
32dcd021 | 1285 | struct evsel *evsel; |
a74b4b66 | 1286 | int err; |
727ab04e | 1287 | |
4112eb18 ACM |
1288 | /* |
1289 | * Default: one fd per CPU, all threads, aka systemwide | |
1290 | * as sys_perf_event_open(cpu = -1, thread = -1) is EINVAL | |
1291 | */ | |
03617c22 | 1292 | if (evlist->core.threads == NULL && evlist->core.cpus == NULL) { |
4112eb18 ACM |
1293 | err = perf_evlist__create_syswide_maps(evlist); |
1294 | if (err < 0) | |
1295 | goto out_err; | |
1296 | } | |
1297 | ||
733cd2fe AH |
1298 | perf_evlist__update_id_pos(evlist); |
1299 | ||
e5cadb93 | 1300 | evlist__for_each_entry(evlist, evsel) { |
af663bd0 | 1301 | err = evsel__open(evsel, evsel->core.cpus, evsel->core.threads); |
727ab04e ACM |
1302 | if (err < 0) |
1303 | goto out_err; | |
1304 | } | |
1305 | ||
1306 | return 0; | |
1307 | out_err: | |
750b4ede | 1308 | evlist__close(evlist); |
41c21a68 | 1309 | errno = -err; |
727ab04e ACM |
1310 | return err; |
1311 | } | |
35b9d88e | 1312 | |
63503dba | 1313 | int perf_evlist__prepare_workload(struct evlist *evlist, struct target *target, |
55e162ea | 1314 | const char *argv[], bool pipe_output, |
735f7e0b | 1315 | void (*exec_error)(int signo, siginfo_t *info, void *ucontext)) |
35b9d88e ACM |
1316 | { |
1317 | int child_ready_pipe[2], go_pipe[2]; | |
1318 | char bf; | |
1319 | ||
1320 | if (pipe(child_ready_pipe) < 0) { | |
1321 | perror("failed to create 'ready' pipe"); | |
1322 | return -1; | |
1323 | } | |
1324 | ||
1325 | if (pipe(go_pipe) < 0) { | |
1326 | perror("failed to create 'go' pipe"); | |
1327 | goto out_close_ready_pipe; | |
1328 | } | |
1329 | ||
1330 | evlist->workload.pid = fork(); | |
1331 | if (evlist->workload.pid < 0) { | |
1332 | perror("failed to fork"); | |
1333 | goto out_close_pipes; | |
1334 | } | |
1335 | ||
1336 | if (!evlist->workload.pid) { | |
5f1c4225 ACM |
1337 | int ret; |
1338 | ||
119fa3c9 | 1339 | if (pipe_output) |
35b9d88e ACM |
1340 | dup2(2, 1); |
1341 | ||
0817df08 DA |
1342 | signal(SIGTERM, SIG_DFL); |
1343 | ||
35b9d88e ACM |
1344 | close(child_ready_pipe[0]); |
1345 | close(go_pipe[1]); | |
1346 | fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC); | |
1347 | ||
35b9d88e ACM |
1348 | /* |
1349 | * Tell the parent we're ready to go | |
1350 | */ | |
1351 | close(child_ready_pipe[1]); | |
1352 | ||
1353 | /* | |
1354 | * Wait until the parent tells us to go. | |
1355 | */ | |
5f1c4225 ACM |
1356 | ret = read(go_pipe[0], &bf, 1); |
1357 | /* | |
1358 | * The parent will ask for the execvp() to be performed by | |
1359 | * writing exactly one byte, in workload.cork_fd, usually via | |
1360 | * perf_evlist__start_workload(). | |
1361 | * | |
20f86fc1 | 1362 | * For cancelling the workload without actually running it, |
5f1c4225 ACM |
1363 | * the parent will just close workload.cork_fd, without writing |
1364 | * anything, i.e. read will return zero and we just exit() | |
1365 | * here. | |
1366 | */ | |
1367 | if (ret != 1) { | |
1368 | if (ret == -1) | |
1369 | perror("unable to read pipe"); | |
1370 | exit(ret); | |
1371 | } | |
35b9d88e ACM |
1372 | |
1373 | execvp(argv[0], (char **)argv); | |
1374 | ||
735f7e0b | 1375 | if (exec_error) { |
f33cbe72 ACM |
1376 | union sigval val; |
1377 | ||
1378 | val.sival_int = errno; | |
1379 | if (sigqueue(getppid(), SIGUSR1, val)) | |
1380 | perror(argv[0]); | |
1381 | } else | |
1382 | perror(argv[0]); | |
35b9d88e ACM |
1383 | exit(-1); |
1384 | } | |
1385 | ||
735f7e0b ACM |
1386 | if (exec_error) { |
1387 | struct sigaction act = { | |
1388 | .sa_flags = SA_SIGINFO, | |
1389 | .sa_sigaction = exec_error, | |
1390 | }; | |
1391 | sigaction(SIGUSR1, &act, NULL); | |
1392 | } | |
1393 | ||
1aaf63b1 | 1394 | if (target__none(target)) { |
03617c22 | 1395 | if (evlist->core.threads == NULL) { |
1aaf63b1 ACM |
1396 | fprintf(stderr, "FATAL: evlist->threads need to be set at this point (%s:%d).\n", |
1397 | __func__, __LINE__); | |
1398 | goto out_close_pipes; | |
1399 | } | |
03617c22 | 1400 | perf_thread_map__set_pid(evlist->core.threads, 0, evlist->workload.pid); |
1aaf63b1 | 1401 | } |
35b9d88e ACM |
1402 | |
1403 | close(child_ready_pipe[1]); | |
1404 | close(go_pipe[0]); | |
1405 | /* | |
1406 | * wait for child to settle | |
1407 | */ | |
1408 | if (read(child_ready_pipe[0], &bf, 1) == -1) { | |
1409 | perror("unable to read pipe"); | |
1410 | goto out_close_pipes; | |
1411 | } | |
1412 | ||
bcf3145f | 1413 | fcntl(go_pipe[1], F_SETFD, FD_CLOEXEC); |
35b9d88e ACM |
1414 | evlist->workload.cork_fd = go_pipe[1]; |
1415 | close(child_ready_pipe[0]); | |
1416 | return 0; | |
1417 | ||
1418 | out_close_pipes: | |
1419 | close(go_pipe[0]); | |
1420 | close(go_pipe[1]); | |
1421 | out_close_ready_pipe: | |
1422 | close(child_ready_pipe[0]); | |
1423 | close(child_ready_pipe[1]); | |
1424 | return -1; | |
1425 | } | |
1426 | ||
63503dba | 1427 | int perf_evlist__start_workload(struct evlist *evlist) |
35b9d88e ACM |
1428 | { |
1429 | if (evlist->workload.cork_fd > 0) { | |
b3824404 | 1430 | char bf = 0; |
bcf3145f | 1431 | int ret; |
35b9d88e ACM |
1432 | /* |
1433 | * Remove the cork, let it rip! | |
1434 | */ | |
bcf3145f NK |
1435 | ret = write(evlist->workload.cork_fd, &bf, 1); |
1436 | if (ret < 0) | |
e978be9e | 1437 | perror("unable to write to pipe"); |
bcf3145f NK |
1438 | |
1439 | close(evlist->workload.cork_fd); | |
1440 | return ret; | |
35b9d88e ACM |
1441 | } |
1442 | ||
1443 | return 0; | |
1444 | } | |
cb0b29e0 | 1445 | |
63503dba | 1446 | int perf_evlist__parse_sample(struct evlist *evlist, union perf_event *event, |
0807d2d8 | 1447 | struct perf_sample *sample) |
cb0b29e0 | 1448 | { |
32dcd021 | 1449 | struct evsel *evsel = perf_evlist__event2evsel(evlist, event); |
75562573 AH |
1450 | |
1451 | if (!evsel) | |
1452 | return -EFAULT; | |
6b6017a2 | 1453 | return evsel__parse_sample(evsel, event, sample); |
cb0b29e0 | 1454 | } |
78f067b3 | 1455 | |
63503dba | 1456 | int perf_evlist__parse_sample_timestamp(struct evlist *evlist, |
01468120 JO |
1457 | union perf_event *event, |
1458 | u64 *timestamp) | |
1459 | { | |
32dcd021 | 1460 | struct evsel *evsel = perf_evlist__event2evsel(evlist, event); |
01468120 JO |
1461 | |
1462 | if (!evsel) | |
1463 | return -EFAULT; | |
6b6017a2 | 1464 | return evsel__parse_sample_timestamp(evsel, event, timestamp); |
01468120 JO |
1465 | } |
1466 | ||
d1f249ec | 1467 | int evlist__strerror_open(struct evlist *evlist, int err, char *buf, size_t size) |
a8f23d8f ACM |
1468 | { |
1469 | int printed, value; | |
c8b5f2c9 | 1470 | char sbuf[STRERR_BUFSIZE], *emsg = str_error_r(err, sbuf, sizeof(sbuf)); |
a8f23d8f ACM |
1471 | |
1472 | switch (err) { | |
1473 | case EACCES: | |
1474 | case EPERM: | |
1475 | printed = scnprintf(buf, size, | |
1476 | "Error:\t%s.\n" | |
1477 | "Hint:\tCheck /proc/sys/kernel/perf_event_paranoid setting.", emsg); | |
1478 | ||
1a47245d | 1479 | value = perf_event_paranoid(); |
a8f23d8f ACM |
1480 | |
1481 | printed += scnprintf(buf + printed, size - printed, "\nHint:\t"); | |
1482 | ||
1483 | if (value >= 2) { | |
1484 | printed += scnprintf(buf + printed, size - printed, | |
1485 | "For your workloads it needs to be <= 1\nHint:\t"); | |
1486 | } | |
1487 | printed += scnprintf(buf + printed, size - printed, | |
5229e366 | 1488 | "For system wide tracing it needs to be set to -1.\n"); |
a8f23d8f ACM |
1489 | |
1490 | printed += scnprintf(buf + printed, size - printed, | |
5229e366 ACM |
1491 | "Hint:\tTry: 'sudo sh -c \"echo -1 > /proc/sys/kernel/perf_event_paranoid\"'\n" |
1492 | "Hint:\tThe current value is %d.", value); | |
a8f23d8f | 1493 | break; |
d9aade7f | 1494 | case EINVAL: { |
515dbe48 | 1495 | struct evsel *first = evlist__first(evlist); |
d9aade7f ACM |
1496 | int max_freq; |
1497 | ||
1498 | if (sysctl__read_int("kernel/perf_event_max_sample_rate", &max_freq) < 0) | |
1499 | goto out_default; | |
1500 | ||
1fc632ce | 1501 | if (first->core.attr.sample_freq < (u64)max_freq) |
d9aade7f ACM |
1502 | goto out_default; |
1503 | ||
1504 | printed = scnprintf(buf, size, | |
1505 | "Error:\t%s.\n" | |
1506 | "Hint:\tCheck /proc/sys/kernel/perf_event_max_sample_rate.\n" | |
1507 | "Hint:\tThe current value is %d and %" PRIu64 " is being requested.", | |
1fc632ce | 1508 | emsg, max_freq, first->core.attr.sample_freq); |
d9aade7f ACM |
1509 | break; |
1510 | } | |
a8f23d8f | 1511 | default: |
d9aade7f | 1512 | out_default: |
a8f23d8f ACM |
1513 | scnprintf(buf, size, "%s", emsg); |
1514 | break; | |
1515 | } | |
1516 | ||
1517 | return 0; | |
1518 | } | |
a025e4f0 | 1519 | |
d1f249ec | 1520 | int evlist__strerror_mmap(struct evlist *evlist, int err, char *buf, size_t size) |
956fa571 | 1521 | { |
c8b5f2c9 | 1522 | char sbuf[STRERR_BUFSIZE], *emsg = str_error_r(err, sbuf, sizeof(sbuf)); |
f6fa4375 | 1523 | int pages_attempted = evlist->core.mmap_len / 1024, pages_max_per_user, printed = 0; |
956fa571 ACM |
1524 | |
1525 | switch (err) { | |
1526 | case EPERM: | |
e5d4a290 | 1527 | sysctl__read_int("kernel/perf_event_mlock_kb", &pages_max_per_user); |
e965bea1 ACM |
1528 | printed += scnprintf(buf + printed, size - printed, |
1529 | "Error:\t%s.\n" | |
956fa571 | 1530 | "Hint:\tCheck /proc/sys/kernel/perf_event_mlock_kb (%d kB) setting.\n" |
e965bea1 | 1531 | "Hint:\tTried using %zd kB.\n", |
e5d4a290 | 1532 | emsg, pages_max_per_user, pages_attempted); |
e965bea1 ACM |
1533 | |
1534 | if (pages_attempted >= pages_max_per_user) { | |
1535 | printed += scnprintf(buf + printed, size - printed, | |
1536 | "Hint:\tTry 'sudo sh -c \"echo %d > /proc/sys/kernel/perf_event_mlock_kb\"', or\n", | |
1537 | pages_max_per_user + pages_attempted); | |
1538 | } | |
1539 | ||
1540 | printed += scnprintf(buf + printed, size - printed, | |
1541 | "Hint:\tTry using a smaller -m/--mmap-pages value."); | |
956fa571 ACM |
1542 | break; |
1543 | default: | |
1544 | scnprintf(buf, size, "%s", emsg); | |
1545 | break; | |
1546 | } | |
1547 | ||
1548 | return 0; | |
1549 | } | |
1550 | ||
63503dba | 1551 | void perf_evlist__to_front(struct evlist *evlist, |
32dcd021 | 1552 | struct evsel *move_evsel) |
a025e4f0 | 1553 | { |
32dcd021 | 1554 | struct evsel *evsel, *n; |
a025e4f0 AH |
1555 | LIST_HEAD(move); |
1556 | ||
515dbe48 | 1557 | if (move_evsel == evlist__first(evlist)) |
a025e4f0 AH |
1558 | return; |
1559 | ||
e5cadb93 | 1560 | evlist__for_each_entry_safe(evlist, n, evsel) { |
a025e4f0 | 1561 | if (evsel->leader == move_evsel->leader) |
b27c4ece | 1562 | list_move_tail(&evsel->core.node, &move); |
a025e4f0 AH |
1563 | } |
1564 | ||
ce9036a6 | 1565 | list_splice(&move, &evlist->core.entries); |
a025e4f0 | 1566 | } |
60b0896c | 1567 | |
442ad225 AH |
1568 | struct evsel *perf_evlist__get_tracking_event(struct evlist *evlist) |
1569 | { | |
1570 | struct evsel *evsel; | |
1571 | ||
1572 | evlist__for_each_entry(evlist, evsel) { | |
1573 | if (evsel->tracking) | |
1574 | return evsel; | |
1575 | } | |
1576 | ||
1577 | return evlist__first(evlist); | |
1578 | } | |
1579 | ||
63503dba | 1580 | void perf_evlist__set_tracking_event(struct evlist *evlist, |
32dcd021 | 1581 | struct evsel *tracking_evsel) |
60b0896c | 1582 | { |
32dcd021 | 1583 | struct evsel *evsel; |
60b0896c AH |
1584 | |
1585 | if (tracking_evsel->tracking) | |
1586 | return; | |
1587 | ||
e5cadb93 | 1588 | evlist__for_each_entry(evlist, evsel) { |
60b0896c AH |
1589 | if (evsel != tracking_evsel) |
1590 | evsel->tracking = false; | |
1591 | } | |
1592 | ||
1593 | tracking_evsel->tracking = true; | |
1594 | } | |
7630b3e2 | 1595 | |
32dcd021 | 1596 | struct evsel * |
63503dba | 1597 | perf_evlist__find_evsel_by_str(struct evlist *evlist, |
7630b3e2 WN |
1598 | const char *str) |
1599 | { | |
32dcd021 | 1600 | struct evsel *evsel; |
7630b3e2 | 1601 | |
e5cadb93 | 1602 | evlist__for_each_entry(evlist, evsel) { |
7630b3e2 WN |
1603 | if (!evsel->name) |
1604 | continue; | |
1605 | if (strcmp(str, evsel->name) == 0) | |
1606 | return evsel; | |
1607 | } | |
1608 | ||
1609 | return NULL; | |
1610 | } | |
54cc54de | 1611 | |
63503dba | 1612 | void perf_evlist__toggle_bkw_mmap(struct evlist *evlist, |
54cc54de WN |
1613 | enum bkw_mmap_state state) |
1614 | { | |
1615 | enum bkw_mmap_state old_state = evlist->bkw_mmap_state; | |
1616 | enum action { | |
1617 | NONE, | |
1618 | PAUSE, | |
1619 | RESUME, | |
1620 | } action = NONE; | |
1621 | ||
0b72d69a | 1622 | if (!evlist->overwrite_mmap) |
54cc54de WN |
1623 | return; |
1624 | ||
1625 | switch (old_state) { | |
1626 | case BKW_MMAP_NOTREADY: { | |
1627 | if (state != BKW_MMAP_RUNNING) | |
dd8bd53a | 1628 | goto state_err; |
54cc54de WN |
1629 | break; |
1630 | } | |
1631 | case BKW_MMAP_RUNNING: { | |
1632 | if (state != BKW_MMAP_DATA_PENDING) | |
1633 | goto state_err; | |
1634 | action = PAUSE; | |
1635 | break; | |
1636 | } | |
1637 | case BKW_MMAP_DATA_PENDING: { | |
1638 | if (state != BKW_MMAP_EMPTY) | |
1639 | goto state_err; | |
1640 | break; | |
1641 | } | |
1642 | case BKW_MMAP_EMPTY: { | |
1643 | if (state != BKW_MMAP_RUNNING) | |
1644 | goto state_err; | |
1645 | action = RESUME; | |
1646 | break; | |
1647 | } | |
1648 | default: | |
1649 | WARN_ONCE(1, "Shouldn't get there\n"); | |
1650 | } | |
1651 | ||
1652 | evlist->bkw_mmap_state = state; | |
1653 | ||
1654 | switch (action) { | |
1655 | case PAUSE: | |
1656 | perf_evlist__pause(evlist); | |
1657 | break; | |
1658 | case RESUME: | |
1659 | perf_evlist__resume(evlist); | |
1660 | break; | |
1661 | case NONE: | |
1662 | default: | |
1663 | break; | |
1664 | } | |
1665 | ||
1666 | state_err: | |
1667 | return; | |
1668 | } | |
07d6f446 | 1669 | |
63503dba | 1670 | bool perf_evlist__exclude_kernel(struct evlist *evlist) |
07d6f446 | 1671 | { |
32dcd021 | 1672 | struct evsel *evsel; |
07d6f446 ACM |
1673 | |
1674 | evlist__for_each_entry(evlist, evsel) { | |
1fc632ce | 1675 | if (!evsel->core.attr.exclude_kernel) |
07d6f446 ACM |
1676 | return false; |
1677 | } | |
1678 | ||
1679 | return true; | |
1680 | } | |
e2bdbe80 JY |
1681 | |
1682 | /* | |
1683 | * Events in data file are not collect in groups, but we still want | |
1684 | * the group display. Set the artificial group and set the leader's | |
1685 | * forced_leader flag to notify the display code. | |
1686 | */ | |
63503dba | 1687 | void perf_evlist__force_leader(struct evlist *evlist) |
e2bdbe80 JY |
1688 | { |
1689 | if (!evlist->nr_groups) { | |
515dbe48 | 1690 | struct evsel *leader = evlist__first(evlist); |
e2bdbe80 JY |
1691 | |
1692 | perf_evlist__set_leader(evlist); | |
1693 | leader->forced_leader = true; | |
1694 | } | |
1695 | } | |
c3537fc2 | 1696 | |
63503dba | 1697 | struct evsel *perf_evlist__reset_weak_group(struct evlist *evsel_list, |
4804e011 AK |
1698 | struct evsel *evsel, |
1699 | bool close) | |
c3537fc2 | 1700 | { |
32dcd021 | 1701 | struct evsel *c2, *leader; |
c3537fc2 AK |
1702 | bool is_open = true; |
1703 | ||
1704 | leader = evsel->leader; | |
1705 | pr_debug("Weak group for %s/%d failed\n", | |
5643b1a5 | 1706 | leader->name, leader->core.nr_members); |
c3537fc2 AK |
1707 | |
1708 | /* | |
1709 | * for_each_group_member doesn't work here because it doesn't | |
1710 | * include the first entry. | |
1711 | */ | |
1712 | evlist__for_each_entry(evsel_list, c2) { | |
1713 | if (c2 == evsel) | |
1714 | is_open = false; | |
1715 | if (c2->leader == leader) { | |
4804e011 | 1716 | if (is_open && close) |
5a40e199 | 1717 | perf_evsel__close(&c2->core); |
c3537fc2 | 1718 | c2->leader = c2; |
5643b1a5 | 1719 | c2->core.nr_members = 0; |
4804e011 AK |
1720 | /* |
1721 | * Set this for all former members of the group | |
1722 | * to indicate they get reopened. | |
1723 | */ | |
1724 | c2->reset_group = true; | |
c3537fc2 AK |
1725 | } |
1726 | } | |
1727 | return leader; | |
1728 | } | |
ec886bf5 AB |
1729 | |
1730 | int evlist__initialize_ctlfd(struct evlist *evlist, int fd, int ack) | |
1731 | { | |
1732 | if (fd == -1) { | |
1733 | pr_debug("Control descriptor is not initialized\n"); | |
1734 | return 0; | |
1735 | } | |
1736 | ||
1737 | evlist->ctl_fd.pos = perf_evlist__add_pollfd(&evlist->core, fd, NULL, POLLIN, | |
1738 | fdarray_flag__nonfilterable); | |
1739 | if (evlist->ctl_fd.pos < 0) { | |
1740 | evlist->ctl_fd.pos = -1; | |
1741 | pr_err("Failed to add ctl fd entry: %m\n"); | |
1742 | return -1; | |
1743 | } | |
1744 | ||
1745 | evlist->ctl_fd.fd = fd; | |
1746 | evlist->ctl_fd.ack = ack; | |
1747 | ||
1748 | return 0; | |
1749 | } | |
1750 | ||
1751 | bool evlist__ctlfd_initialized(struct evlist *evlist) | |
1752 | { | |
1753 | return evlist->ctl_fd.pos >= 0; | |
1754 | } | |
1755 | ||
1756 | int evlist__finalize_ctlfd(struct evlist *evlist) | |
1757 | { | |
1758 | struct pollfd *entries = evlist->core.pollfd.entries; | |
1759 | ||
1760 | if (!evlist__ctlfd_initialized(evlist)) | |
1761 | return 0; | |
1762 | ||
1763 | entries[evlist->ctl_fd.pos].fd = -1; | |
1764 | entries[evlist->ctl_fd.pos].events = 0; | |
1765 | entries[evlist->ctl_fd.pos].revents = 0; | |
1766 | ||
1767 | evlist->ctl_fd.pos = -1; | |
1768 | evlist->ctl_fd.ack = -1; | |
1769 | evlist->ctl_fd.fd = -1; | |
1770 | ||
1771 | return 0; | |
1772 | } | |
1773 | ||
1774 | static int evlist__ctlfd_recv(struct evlist *evlist, enum evlist_ctl_cmd *cmd, | |
1775 | char *cmd_data, size_t data_size) | |
1776 | { | |
1777 | int err; | |
1778 | char c; | |
1779 | size_t bytes_read = 0; | |
1780 | ||
1781 | memset(cmd_data, 0, data_size); | |
1782 | data_size--; | |
1783 | ||
1784 | do { | |
1785 | err = read(evlist->ctl_fd.fd, &c, 1); | |
1786 | if (err > 0) { | |
1787 | if (c == '\n' || c == '\0') | |
1788 | break; | |
1789 | cmd_data[bytes_read++] = c; | |
1790 | if (bytes_read == data_size) | |
1791 | break; | |
1792 | } else { | |
1793 | if (err == -1) | |
1794 | pr_err("Failed to read from ctlfd %d: %m\n", evlist->ctl_fd.fd); | |
1795 | break; | |
1796 | } | |
1797 | } while (1); | |
1798 | ||
1799 | pr_debug("Message from ctl_fd: \"%s%s\"\n", cmd_data, | |
1800 | bytes_read == data_size ? "" : c == '\n' ? "\\n" : "\\0"); | |
1801 | ||
1802 | if (err > 0) { | |
1803 | if (!strncmp(cmd_data, EVLIST_CTL_CMD_ENABLE_TAG, | |
1804 | (sizeof(EVLIST_CTL_CMD_ENABLE_TAG)-1))) { | |
1805 | *cmd = EVLIST_CTL_CMD_ENABLE; | |
1806 | } else if (!strncmp(cmd_data, EVLIST_CTL_CMD_DISABLE_TAG, | |
1807 | (sizeof(EVLIST_CTL_CMD_DISABLE_TAG)-1))) { | |
1808 | *cmd = EVLIST_CTL_CMD_DISABLE; | |
1809 | } | |
1810 | } | |
1811 | ||
1812 | return err; | |
1813 | } | |
1814 | ||
1815 | static int evlist__ctlfd_ack(struct evlist *evlist) | |
1816 | { | |
1817 | int err; | |
1818 | ||
1819 | if (evlist->ctl_fd.ack == -1) | |
1820 | return 0; | |
1821 | ||
1822 | err = write(evlist->ctl_fd.ack, EVLIST_CTL_CMD_ACK_TAG, | |
1823 | sizeof(EVLIST_CTL_CMD_ACK_TAG)); | |
1824 | if (err == -1) | |
1825 | pr_err("failed to write to ctl_ack_fd %d: %m\n", evlist->ctl_fd.ack); | |
1826 | ||
1827 | return err; | |
1828 | } | |
1829 | ||
1830 | int evlist__ctlfd_process(struct evlist *evlist, enum evlist_ctl_cmd *cmd) | |
1831 | { | |
1832 | int err = 0; | |
1833 | char cmd_data[EVLIST_CTL_CMD_MAX_LEN]; | |
1834 | int ctlfd_pos = evlist->ctl_fd.pos; | |
1835 | struct pollfd *entries = evlist->core.pollfd.entries; | |
1836 | ||
1837 | if (!evlist__ctlfd_initialized(evlist) || !entries[ctlfd_pos].revents) | |
1838 | return 0; | |
1839 | ||
1840 | if (entries[ctlfd_pos].revents & POLLIN) { | |
1841 | err = evlist__ctlfd_recv(evlist, cmd, cmd_data, | |
1842 | EVLIST_CTL_CMD_MAX_LEN); | |
1843 | if (err > 0) { | |
1844 | switch (*cmd) { | |
1845 | case EVLIST_CTL_CMD_ENABLE: | |
1846 | evlist__enable(evlist); | |
1847 | break; | |
1848 | case EVLIST_CTL_CMD_DISABLE: | |
1849 | evlist__disable(evlist); | |
1850 | break; | |
1851 | case EVLIST_CTL_CMD_ACK: | |
1852 | case EVLIST_CTL_CMD_UNSUPPORTED: | |
1853 | default: | |
1854 | pr_debug("ctlfd: unsupported %d\n", *cmd); | |
1855 | break; | |
1856 | } | |
1857 | if (!(*cmd == EVLIST_CTL_CMD_ACK || *cmd == EVLIST_CTL_CMD_UNSUPPORTED)) | |
1858 | evlist__ctlfd_ack(evlist); | |
1859 | } | |
1860 | } | |
1861 | ||
1862 | if (entries[ctlfd_pos].revents & (POLLHUP | POLLERR)) | |
1863 | evlist__finalize_ctlfd(evlist); | |
1864 | else | |
1865 | entries[ctlfd_pos].revents = 0; | |
1866 | ||
1867 | return err; | |
1868 | } |