1 #include <linux/kernel.h> 2 #include <traceevent/event-parse.h> 3 4 #include <byteswap.h> 5 #include <unistd.h> 6 #include <sys/types.h> 7 #include <sys/mman.h> 8 9 #include "evlist.h" 10 #include "evsel.h" 11 #include "session.h" 12 #include "tool.h" 13 #include "sort.h" 14 #include "util.h" 15 #include "cpumap.h" 16 #include "perf_regs.h" 17 #include "vdso.h" 18 19 static int perf_session__open(struct perf_session *self, bool force) 20 { 21 struct stat input_stat; 22 23 if (!strcmp(self->filename, "-")) { 24 self->fd_pipe = true; 25 self->fd = STDIN_FILENO; 26 27 if (perf_session__read_header(self) < 0) 28 pr_err("incompatible file format (rerun with -v to learn more)"); 29 30 return 0; 31 } 32 33 self->fd = open(self->filename, O_RDONLY); 34 if (self->fd < 0) { 35 int err = errno; 36 37 pr_err("failed to open %s: %s", self->filename, strerror(err)); 38 if (err == ENOENT && !strcmp(self->filename, "perf.data")) 39 pr_err(" (try 'perf record' first)"); 40 pr_err("\n"); 41 return -errno; 42 } 43 44 if (fstat(self->fd, &input_stat) < 0) 45 goto out_close; 46 47 if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) { 48 pr_err("file %s not owned by current user or root\n", 49 self->filename); 50 goto out_close; 51 } 52 53 if (!input_stat.st_size) { 54 pr_info("zero-sized file (%s), nothing to do!\n", 55 self->filename); 56 goto out_close; 57 } 58 59 if (perf_session__read_header(self) < 0) { 60 pr_err("incompatible file format (rerun with -v to learn more)"); 61 goto out_close; 62 } 63 64 if (!perf_evlist__valid_sample_type(self->evlist)) { 65 pr_err("non matching sample_type"); 66 goto out_close; 67 } 68 69 if (!perf_evlist__valid_sample_id_all(self->evlist)) { 70 pr_err("non matching sample_id_all"); 71 goto out_close; 72 } 73 74 if (!perf_evlist__valid_read_format(self->evlist)) { 75 pr_err("non matching read_format"); 76 goto out_close; 77 } 78 79 self->size = input_stat.st_size; 80 return 0; 81 82 out_close: 83 close(self->fd); 84 self->fd = -1; 85 return -1; 86 } 87 88 void perf_session__set_id_hdr_size(struct perf_session *session) 89 { 90 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist); 91 92 machines__set_id_hdr_size(&session->machines, id_hdr_size); 93 } 94 95 int perf_session__create_kernel_maps(struct perf_session *self) 96 { 97 int ret = machine__create_kernel_maps(&self->machines.host); 98 99 if (ret >= 0) 100 ret = machines__create_guest_kernel_maps(&self->machines); 101 return ret; 102 } 103 104 static void perf_session__destroy_kernel_maps(struct perf_session *self) 105 { 106 machines__destroy_kernel_maps(&self->machines); 107 } 108 109 struct perf_session *perf_session__new(const char *filename, int mode, 110 bool force, bool repipe, 111 struct perf_tool *tool) 112 { 113 struct perf_session *self; 114 struct stat st; 115 size_t len; 116 117 if (!filename || !strlen(filename)) { 118 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) 119 filename = "-"; 120 else 121 filename = "perf.data"; 122 } 123 124 len = strlen(filename); 125 self = zalloc(sizeof(*self) + len); 126 127 if (self == NULL) 128 goto out; 129 130 memcpy(self->filename, filename, len); 131 self->repipe = repipe; 132 INIT_LIST_HEAD(&self->ordered_samples.samples); 133 INIT_LIST_HEAD(&self->ordered_samples.sample_cache); 134 INIT_LIST_HEAD(&self->ordered_samples.to_free); 135 machines__init(&self->machines); 136 137 if (mode == O_RDONLY) { 138 if (perf_session__open(self, force) < 0) 139 goto out_delete; 140 perf_session__set_id_hdr_size(self); 141 } else if (mode == O_WRONLY) { 142 /* 143 * In O_RDONLY mode this will be performed when reading the 144 * kernel MMAP event, in perf_event__process_mmap(). 145 */ 146 if (perf_session__create_kernel_maps(self) < 0) 147 goto out_delete; 148 } 149 150 if (tool && tool->ordering_requires_timestamps && 151 tool->ordered_samples && !perf_evlist__sample_id_all(self->evlist)) { 152 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); 153 tool->ordered_samples = false; 154 } 155 156 out: 157 return self; 158 out_delete: 159 perf_session__delete(self); 160 return NULL; 161 } 162 163 static void perf_session__delete_dead_threads(struct perf_session *session) 164 { 165 machine__delete_dead_threads(&session->machines.host); 166 } 167 168 static void perf_session__delete_threads(struct perf_session *session) 169 { 170 machine__delete_threads(&session->machines.host); 171 } 172 173 static void perf_session_env__delete(struct perf_session_env *env) 174 { 175 free(env->hostname); 176 free(env->os_release); 177 free(env->version); 178 free(env->arch); 179 free(env->cpu_desc); 180 free(env->cpuid); 181 182 free(env->cmdline); 183 free(env->sibling_cores); 184 free(env->sibling_threads); 185 free(env->numa_nodes); 186 free(env->pmu_mappings); 187 } 188 189 void perf_session__delete(struct perf_session *self) 190 { 191 perf_session__destroy_kernel_maps(self); 192 perf_session__delete_dead_threads(self); 193 perf_session__delete_threads(self); 194 perf_session_env__delete(&self->header.env); 195 machines__exit(&self->machines); 196 close(self->fd); 197 free(self); 198 vdso__exit(); 199 } 200 201 static int process_event_synth_tracing_data_stub(struct perf_tool *tool 202 __maybe_unused, 203 union perf_event *event 204 __maybe_unused, 205 struct perf_session *session 206 __maybe_unused) 207 { 208 dump_printf(": unhandled!\n"); 209 return 0; 210 } 211 212 static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused, 213 union perf_event *event __maybe_unused, 214 struct perf_evlist **pevlist 215 __maybe_unused) 216 { 217 dump_printf(": unhandled!\n"); 218 return 0; 219 } 220 221 static int process_event_sample_stub(struct perf_tool *tool __maybe_unused, 222 union perf_event *event __maybe_unused, 223 struct perf_sample *sample __maybe_unused, 224 struct perf_evsel *evsel __maybe_unused, 225 struct machine *machine __maybe_unused) 226 { 227 dump_printf(": unhandled!\n"); 228 return 0; 229 } 230 231 static int process_event_stub(struct perf_tool *tool __maybe_unused, 232 union perf_event *event __maybe_unused, 233 struct perf_sample *sample __maybe_unused, 234 struct machine *machine __maybe_unused) 235 { 236 dump_printf(": unhandled!\n"); 237 return 0; 238 } 239 240 static int process_finished_round_stub(struct perf_tool *tool __maybe_unused, 241 union perf_event *event __maybe_unused, 242 struct perf_session *perf_session 243 __maybe_unused) 244 { 245 dump_printf(": unhandled!\n"); 246 return 0; 247 } 248 249 static int process_finished_round(struct perf_tool *tool, 250 union perf_event *event, 251 struct perf_session *session); 252 253 void perf_tool__fill_defaults(struct perf_tool *tool) 254 { 255 if (tool->sample == NULL) 256 tool->sample = process_event_sample_stub; 257 if (tool->mmap == NULL) 258 tool->mmap = process_event_stub; 259 if (tool->comm == NULL) 260 tool->comm = process_event_stub; 261 if (tool->fork == NULL) 262 tool->fork = process_event_stub; 263 if (tool->exit == NULL) 264 tool->exit = process_event_stub; 265 if (tool->lost == NULL) 266 tool->lost = perf_event__process_lost; 267 if (tool->read == NULL) 268 tool->read = process_event_sample_stub; 269 if (tool->throttle == NULL) 270 tool->throttle = process_event_stub; 271 if (tool->unthrottle == NULL) 272 tool->unthrottle = process_event_stub; 273 if (tool->attr == NULL) 274 tool->attr = process_event_synth_attr_stub; 275 if (tool->tracing_data == NULL) 276 tool->tracing_data = process_event_synth_tracing_data_stub; 277 if (tool->build_id == NULL) 278 tool->build_id = process_finished_round_stub; 279 if (tool->finished_round == NULL) { 280 if (tool->ordered_samples) 281 tool->finished_round = process_finished_round; 282 else 283 tool->finished_round = process_finished_round_stub; 284 } 285 } 286 287 void mem_bswap_32(void *src, int byte_size) 288 { 289 u32 *m = src; 290 while (byte_size > 0) { 291 *m = bswap_32(*m); 292 byte_size -= sizeof(u32); 293 ++m; 294 } 295 } 296 297 void mem_bswap_64(void *src, int byte_size) 298 { 299 u64 *m = src; 300 301 while (byte_size > 0) { 302 *m = bswap_64(*m); 303 byte_size -= sizeof(u64); 304 ++m; 305 } 306 } 307 308 static void swap_sample_id_all(union perf_event *event, void *data) 309 { 310 void *end = (void *) event + event->header.size; 311 int size = end - data; 312 313 BUG_ON(size % sizeof(u64)); 314 mem_bswap_64(data, size); 315 } 316 317 static void perf_event__all64_swap(union perf_event *event, 318 bool sample_id_all __maybe_unused) 319 { 320 struct perf_event_header *hdr = &event->header; 321 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); 322 } 323 324 static void perf_event__comm_swap(union perf_event *event, bool sample_id_all) 325 { 326 event->comm.pid = bswap_32(event->comm.pid); 327 event->comm.tid = bswap_32(event->comm.tid); 328 329 if (sample_id_all) { 330 void *data = &event->comm.comm; 331 332 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 333 swap_sample_id_all(event, data); 334 } 335 } 336 337 static void perf_event__mmap_swap(union perf_event *event, 338 bool sample_id_all) 339 { 340 event->mmap.pid = bswap_32(event->mmap.pid); 341 event->mmap.tid = bswap_32(event->mmap.tid); 342 event->mmap.start = bswap_64(event->mmap.start); 343 event->mmap.len = bswap_64(event->mmap.len); 344 event->mmap.pgoff = bswap_64(event->mmap.pgoff); 345 346 if (sample_id_all) { 347 void *data = &event->mmap.filename; 348 349 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 350 swap_sample_id_all(event, data); 351 } 352 } 353 354 static void perf_event__task_swap(union perf_event *event, bool sample_id_all) 355 { 356 event->fork.pid = bswap_32(event->fork.pid); 357 event->fork.tid = bswap_32(event->fork.tid); 358 event->fork.ppid = bswap_32(event->fork.ppid); 359 event->fork.ptid = bswap_32(event->fork.ptid); 360 event->fork.time = bswap_64(event->fork.time); 361 362 if (sample_id_all) 363 swap_sample_id_all(event, &event->fork + 1); 364 } 365 366 static void perf_event__read_swap(union perf_event *event, bool sample_id_all) 367 { 368 event->read.pid = bswap_32(event->read.pid); 369 event->read.tid = bswap_32(event->read.tid); 370 event->read.value = bswap_64(event->read.value); 371 event->read.time_enabled = bswap_64(event->read.time_enabled); 372 event->read.time_running = bswap_64(event->read.time_running); 373 event->read.id = bswap_64(event->read.id); 374 375 if (sample_id_all) 376 swap_sample_id_all(event, &event->read + 1); 377 } 378 379 static u8 revbyte(u8 b) 380 { 381 int rev = (b >> 4) | ((b & 0xf) << 4); 382 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2); 383 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1); 384 return (u8) rev; 385 } 386 387 /* 388 * XXX this is hack in attempt to carry flags bitfield 389 * throught endian village. ABI says: 390 * 391 * Bit-fields are allocated from right to left (least to most significant) 392 * on little-endian implementations and from left to right (most to least 393 * significant) on big-endian implementations. 394 * 395 * The above seems to be byte specific, so we need to reverse each 396 * byte of the bitfield. 'Internet' also says this might be implementation 397 * specific and we probably need proper fix and carry perf_event_attr 398 * bitfield flags in separate data file FEAT_ section. Thought this seems 399 * to work for now. 400 */ 401 static void swap_bitfield(u8 *p, unsigned len) 402 { 403 unsigned i; 404 405 for (i = 0; i < len; i++) { 406 *p = revbyte(*p); 407 p++; 408 } 409 } 410 411 /* exported for swapping attributes in file header */ 412 void perf_event__attr_swap(struct perf_event_attr *attr) 413 { 414 attr->type = bswap_32(attr->type); 415 attr->size = bswap_32(attr->size); 416 attr->config = bswap_64(attr->config); 417 attr->sample_period = bswap_64(attr->sample_period); 418 attr->sample_type = bswap_64(attr->sample_type); 419 attr->read_format = bswap_64(attr->read_format); 420 attr->wakeup_events = bswap_32(attr->wakeup_events); 421 attr->bp_type = bswap_32(attr->bp_type); 422 attr->bp_addr = bswap_64(attr->bp_addr); 423 attr->bp_len = bswap_64(attr->bp_len); 424 425 swap_bitfield((u8 *) (&attr->read_format + 1), sizeof(u64)); 426 } 427 428 static void perf_event__hdr_attr_swap(union perf_event *event, 429 bool sample_id_all __maybe_unused) 430 { 431 size_t size; 432 433 perf_event__attr_swap(&event->attr.attr); 434 435 size = event->header.size; 436 size -= (void *)&event->attr.id - (void *)event; 437 mem_bswap_64(event->attr.id, size); 438 } 439 440 static void perf_event__event_type_swap(union perf_event *event, 441 bool sample_id_all __maybe_unused) 442 { 443 event->event_type.event_type.event_id = 444 bswap_64(event->event_type.event_type.event_id); 445 } 446 447 static void perf_event__tracing_data_swap(union perf_event *event, 448 bool sample_id_all __maybe_unused) 449 { 450 event->tracing_data.size = bswap_32(event->tracing_data.size); 451 } 452 453 typedef void (*perf_event__swap_op)(union perf_event *event, 454 bool sample_id_all); 455 456 static perf_event__swap_op perf_event__swap_ops[] = { 457 [PERF_RECORD_MMAP] = perf_event__mmap_swap, 458 [PERF_RECORD_COMM] = perf_event__comm_swap, 459 [PERF_RECORD_FORK] = perf_event__task_swap, 460 [PERF_RECORD_EXIT] = perf_event__task_swap, 461 [PERF_RECORD_LOST] = perf_event__all64_swap, 462 [PERF_RECORD_READ] = perf_event__read_swap, 463 [PERF_RECORD_SAMPLE] = perf_event__all64_swap, 464 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, 465 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, 466 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, 467 [PERF_RECORD_HEADER_BUILD_ID] = NULL, 468 [PERF_RECORD_HEADER_MAX] = NULL, 469 }; 470 471 struct sample_queue { 472 u64 timestamp; 473 u64 file_offset; 474 union perf_event *event; 475 struct list_head list; 476 }; 477 478 static void perf_session_free_sample_buffers(struct perf_session *session) 479 { 480 struct ordered_samples *os = &session->ordered_samples; 481 482 while (!list_empty(&os->to_free)) { 483 struct sample_queue *sq; 484 485 sq = list_entry(os->to_free.next, struct sample_queue, list); 486 list_del(&sq->list); 487 free(sq); 488 } 489 } 490 491 static int perf_session_deliver_event(struct perf_session *session, 492 union perf_event *event, 493 struct perf_sample *sample, 494 struct perf_tool *tool, 495 u64 file_offset); 496 497 static int flush_sample_queue(struct perf_session *s, 498 struct perf_tool *tool) 499 { 500 struct ordered_samples *os = &s->ordered_samples; 501 struct list_head *head = &os->samples; 502 struct sample_queue *tmp, *iter; 503 struct perf_sample sample; 504 u64 limit = os->next_flush; 505 u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL; 506 unsigned idx = 0, progress_next = os->nr_samples / 16; 507 bool show_progress = limit == ULLONG_MAX; 508 int ret; 509 510 if (!tool->ordered_samples || !limit) 511 return 0; 512 513 list_for_each_entry_safe(iter, tmp, head, list) { 514 if (iter->timestamp > limit) 515 break; 516 517 ret = perf_evlist__parse_sample(s->evlist, iter->event, &sample); 518 if (ret) 519 pr_err("Can't parse sample, err = %d\n", ret); 520 else { 521 ret = perf_session_deliver_event(s, iter->event, &sample, tool, 522 iter->file_offset); 523 if (ret) 524 return ret; 525 } 526 527 os->last_flush = iter->timestamp; 528 list_del(&iter->list); 529 list_add(&iter->list, &os->sample_cache); 530 if (show_progress && (++idx >= progress_next)) { 531 progress_next += os->nr_samples / 16; 532 ui_progress__update(idx, os->nr_samples, 533 "Processing time ordered events..."); 534 } 535 } 536 537 if (list_empty(head)) { 538 os->last_sample = NULL; 539 } else if (last_ts <= limit) { 540 os->last_sample = 541 list_entry(head->prev, struct sample_queue, list); 542 } 543 544 os->nr_samples = 0; 545 546 return 0; 547 } 548 549 /* 550 * When perf record finishes a pass on every buffers, it records this pseudo 551 * event. 552 * We record the max timestamp t found in the pass n. 553 * Assuming these timestamps are monotonic across cpus, we know that if 554 * a buffer still has events with timestamps below t, they will be all 555 * available and then read in the pass n + 1. 556 * Hence when we start to read the pass n + 2, we can safely flush every 557 * events with timestamps below t. 558 * 559 * ============ PASS n ================= 560 * CPU 0 | CPU 1 561 * | 562 * cnt1 timestamps | cnt2 timestamps 563 * 1 | 2 564 * 2 | 3 565 * - | 4 <--- max recorded 566 * 567 * ============ PASS n + 1 ============== 568 * CPU 0 | CPU 1 569 * | 570 * cnt1 timestamps | cnt2 timestamps 571 * 3 | 5 572 * 4 | 6 573 * 5 | 7 <---- max recorded 574 * 575 * Flush every events below timestamp 4 576 * 577 * ============ PASS n + 2 ============== 578 * CPU 0 | CPU 1 579 * | 580 * cnt1 timestamps | cnt2 timestamps 581 * 6 | 8 582 * 7 | 9 583 * - | 10 584 * 585 * Flush every events below timestamp 7 586 * etc... 587 */ 588 static int process_finished_round(struct perf_tool *tool, 589 union perf_event *event __maybe_unused, 590 struct perf_session *session) 591 { 592 int ret = flush_sample_queue(session, tool); 593 if (!ret) 594 session->ordered_samples.next_flush = session->ordered_samples.max_timestamp; 595 596 return ret; 597 } 598 599 /* The queue is ordered by time */ 600 static void __queue_event(struct sample_queue *new, struct perf_session *s) 601 { 602 struct ordered_samples *os = &s->ordered_samples; 603 struct sample_queue *sample = os->last_sample; 604 u64 timestamp = new->timestamp; 605 struct list_head *p; 606 607 ++os->nr_samples; 608 os->last_sample = new; 609 610 if (!sample) { 611 list_add(&new->list, &os->samples); 612 os->max_timestamp = timestamp; 613 return; 614 } 615 616 /* 617 * last_sample might point to some random place in the list as it's 618 * the last queued event. We expect that the new event is close to 619 * this. 620 */ 621 if (sample->timestamp <= timestamp) { 622 while (sample->timestamp <= timestamp) { 623 p = sample->list.next; 624 if (p == &os->samples) { 625 list_add_tail(&new->list, &os->samples); 626 os->max_timestamp = timestamp; 627 return; 628 } 629 sample = list_entry(p, struct sample_queue, list); 630 } 631 list_add_tail(&new->list, &sample->list); 632 } else { 633 while (sample->timestamp > timestamp) { 634 p = sample->list.prev; 635 if (p == &os->samples) { 636 list_add(&new->list, &os->samples); 637 return; 638 } 639 sample = list_entry(p, struct sample_queue, list); 640 } 641 list_add(&new->list, &sample->list); 642 } 643 } 644 645 #define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue)) 646 647 int perf_session_queue_event(struct perf_session *s, union perf_event *event, 648 struct perf_sample *sample, u64 file_offset) 649 { 650 struct ordered_samples *os = &s->ordered_samples; 651 struct list_head *sc = &os->sample_cache; 652 u64 timestamp = sample->time; 653 struct sample_queue *new; 654 655 if (!timestamp || timestamp == ~0ULL) 656 return -ETIME; 657 658 if (timestamp < s->ordered_samples.last_flush) { 659 printf("Warning: Timestamp below last timeslice flush\n"); 660 return -EINVAL; 661 } 662 663 if (!list_empty(sc)) { 664 new = list_entry(sc->next, struct sample_queue, list); 665 list_del(&new->list); 666 } else if (os->sample_buffer) { 667 new = os->sample_buffer + os->sample_buffer_idx; 668 if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER) 669 os->sample_buffer = NULL; 670 } else { 671 os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); 672 if (!os->sample_buffer) 673 return -ENOMEM; 674 list_add(&os->sample_buffer->list, &os->to_free); 675 os->sample_buffer_idx = 2; 676 new = os->sample_buffer + 1; 677 } 678 679 new->timestamp = timestamp; 680 new->file_offset = file_offset; 681 new->event = event; 682 683 __queue_event(new, s); 684 685 return 0; 686 } 687 688 static void callchain__printf(struct perf_sample *sample) 689 { 690 unsigned int i; 691 692 printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr); 693 694 for (i = 0; i < sample->callchain->nr; i++) 695 printf("..... %2d: %016" PRIx64 "\n", 696 i, sample->callchain->ips[i]); 697 } 698 699 static void branch_stack__printf(struct perf_sample *sample) 700 { 701 uint64_t i; 702 703 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr); 704 705 for (i = 0; i < sample->branch_stack->nr; i++) 706 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 "\n", 707 i, sample->branch_stack->entries[i].from, 708 sample->branch_stack->entries[i].to); 709 } 710 711 static void regs_dump__printf(u64 mask, u64 *regs) 712 { 713 unsigned rid, i = 0; 714 715 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) { 716 u64 val = regs[i++]; 717 718 printf(".... %-5s 0x%" PRIx64 "\n", 719 perf_reg_name(rid), val); 720 } 721 } 722 723 static void regs_user__printf(struct perf_sample *sample, u64 mask) 724 { 725 struct regs_dump *user_regs = &sample->user_regs; 726 727 if (user_regs->regs) { 728 printf("... user regs: mask 0x%" PRIx64 "\n", mask); 729 regs_dump__printf(mask, user_regs->regs); 730 } 731 } 732 733 static void stack_user__printf(struct stack_dump *dump) 734 { 735 printf("... ustack: size %" PRIu64 ", offset 0x%x\n", 736 dump->size, dump->offset); 737 } 738 739 static void perf_session__print_tstamp(struct perf_session *session, 740 union perf_event *event, 741 struct perf_sample *sample) 742 { 743 u64 sample_type = __perf_evlist__combined_sample_type(session->evlist); 744 745 if (event->header.type != PERF_RECORD_SAMPLE && 746 !perf_evlist__sample_id_all(session->evlist)) { 747 fputs("-1 -1 ", stdout); 748 return; 749 } 750 751 if ((sample_type & PERF_SAMPLE_CPU)) 752 printf("%u ", sample->cpu); 753 754 if (sample_type & PERF_SAMPLE_TIME) 755 printf("%" PRIu64 " ", sample->time); 756 } 757 758 static void sample_read__printf(struct perf_sample *sample, u64 read_format) 759 { 760 printf("... sample_read:\n"); 761 762 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 763 printf("...... time enabled %016" PRIx64 "\n", 764 sample->read.time_enabled); 765 766 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 767 printf("...... time running %016" PRIx64 "\n", 768 sample->read.time_running); 769 770 if (read_format & PERF_FORMAT_GROUP) { 771 u64 i; 772 773 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr); 774 775 for (i = 0; i < sample->read.group.nr; i++) { 776 struct sample_read_value *value; 777 778 value = &sample->read.group.values[i]; 779 printf("..... id %016" PRIx64 780 ", value %016" PRIx64 "\n", 781 value->id, value->value); 782 } 783 } else 784 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n", 785 sample->read.one.id, sample->read.one.value); 786 } 787 788 static void dump_event(struct perf_session *session, union perf_event *event, 789 u64 file_offset, struct perf_sample *sample) 790 { 791 if (!dump_trace) 792 return; 793 794 printf("\n%#" PRIx64 " [%#x]: event: %d\n", 795 file_offset, event->header.size, event->header.type); 796 797 trace_event(event); 798 799 if (sample) 800 perf_session__print_tstamp(session, event, sample); 801 802 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, 803 event->header.size, perf_event__name(event->header.type)); 804 } 805 806 static void dump_sample(struct perf_evsel *evsel, union perf_event *event, 807 struct perf_sample *sample) 808 { 809 u64 sample_type; 810 811 if (!dump_trace) 812 return; 813 814 printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", 815 event->header.misc, sample->pid, sample->tid, sample->ip, 816 sample->period, sample->addr); 817 818 sample_type = evsel->attr.sample_type; 819 820 if (sample_type & PERF_SAMPLE_CALLCHAIN) 821 callchain__printf(sample); 822 823 if (sample_type & PERF_SAMPLE_BRANCH_STACK) 824 branch_stack__printf(sample); 825 826 if (sample_type & PERF_SAMPLE_REGS_USER) 827 regs_user__printf(sample, evsel->attr.sample_regs_user); 828 829 if (sample_type & PERF_SAMPLE_STACK_USER) 830 stack_user__printf(&sample->user_stack); 831 832 if (sample_type & PERF_SAMPLE_WEIGHT) 833 printf("... weight: %" PRIu64 "\n", sample->weight); 834 835 if (sample_type & PERF_SAMPLE_DATA_SRC) 836 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src); 837 838 if (sample_type & PERF_SAMPLE_READ) 839 sample_read__printf(sample, evsel->attr.read_format); 840 } 841 842 static struct machine * 843 perf_session__find_machine_for_cpumode(struct perf_session *session, 844 union perf_event *event, 845 struct perf_sample *sample) 846 { 847 const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; 848 849 if (perf_guest && 850 ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || 851 (cpumode == PERF_RECORD_MISC_GUEST_USER))) { 852 u32 pid; 853 854 if (event->header.type == PERF_RECORD_MMAP) 855 pid = event->mmap.pid; 856 else 857 pid = sample->pid; 858 859 return perf_session__findnew_machine(session, pid); 860 } 861 862 return &session->machines.host; 863 } 864 865 static int deliver_sample_value(struct perf_session *session, 866 struct perf_tool *tool, 867 union perf_event *event, 868 struct perf_sample *sample, 869 struct sample_read_value *v, 870 struct machine *machine) 871 { 872 struct perf_sample_id *sid; 873 874 sid = perf_evlist__id2sid(session->evlist, v->id); 875 if (sid) { 876 sample->id = v->id; 877 sample->period = v->value - sid->period; 878 sid->period = v->value; 879 } 880 881 if (!sid || sid->evsel == NULL) { 882 ++session->stats.nr_unknown_id; 883 return 0; 884 } 885 886 return tool->sample(tool, event, sample, sid->evsel, machine); 887 } 888 889 static int deliver_sample_group(struct perf_session *session, 890 struct perf_tool *tool, 891 union perf_event *event, 892 struct perf_sample *sample, 893 struct machine *machine) 894 { 895 int ret = -EINVAL; 896 u64 i; 897 898 for (i = 0; i < sample->read.group.nr; i++) { 899 ret = deliver_sample_value(session, tool, event, sample, 900 &sample->read.group.values[i], 901 machine); 902 if (ret) 903 break; 904 } 905 906 return ret; 907 } 908 909 static int 910 perf_session__deliver_sample(struct perf_session *session, 911 struct perf_tool *tool, 912 union perf_event *event, 913 struct perf_sample *sample, 914 struct perf_evsel *evsel, 915 struct machine *machine) 916 { 917 /* We know evsel != NULL. */ 918 u64 sample_type = evsel->attr.sample_type; 919 u64 read_format = evsel->attr.read_format; 920 921 /* Standard sample delievery. */ 922 if (!(sample_type & PERF_SAMPLE_READ)) 923 return tool->sample(tool, event, sample, evsel, machine); 924 925 /* For PERF_SAMPLE_READ we have either single or group mode. */ 926 if (read_format & PERF_FORMAT_GROUP) 927 return deliver_sample_group(session, tool, event, sample, 928 machine); 929 else 930 return deliver_sample_value(session, tool, event, sample, 931 &sample->read.one, machine); 932 } 933 934 static int perf_session_deliver_event(struct perf_session *session, 935 union perf_event *event, 936 struct perf_sample *sample, 937 struct perf_tool *tool, 938 u64 file_offset) 939 { 940 struct perf_evsel *evsel; 941 struct machine *machine; 942 943 dump_event(session, event, file_offset, sample); 944 945 evsel = perf_evlist__id2evsel(session->evlist, sample->id); 946 if (evsel != NULL && event->header.type != PERF_RECORD_SAMPLE) { 947 /* 948 * XXX We're leaving PERF_RECORD_SAMPLE unnacounted here 949 * because the tools right now may apply filters, discarding 950 * some of the samples. For consistency, in the future we 951 * should have something like nr_filtered_samples and remove 952 * the sample->period from total_sample_period, etc, KISS for 953 * now tho. 954 * 955 * Also testing against NULL allows us to handle files without 956 * attr.sample_id_all and/or without PERF_SAMPLE_ID. In the 957 * future probably it'll be a good idea to restrict event 958 * processing via perf_session to files with both set. 959 */ 960 hists__inc_nr_events(&evsel->hists, event->header.type); 961 } 962 963 machine = perf_session__find_machine_for_cpumode(session, event, 964 sample); 965 966 switch (event->header.type) { 967 case PERF_RECORD_SAMPLE: 968 dump_sample(evsel, event, sample); 969 if (evsel == NULL) { 970 ++session->stats.nr_unknown_id; 971 return 0; 972 } 973 if (machine == NULL) { 974 ++session->stats.nr_unprocessable_samples; 975 return 0; 976 } 977 return perf_session__deliver_sample(session, tool, event, 978 sample, evsel, machine); 979 case PERF_RECORD_MMAP: 980 return tool->mmap(tool, event, sample, machine); 981 case PERF_RECORD_COMM: 982 return tool->comm(tool, event, sample, machine); 983 case PERF_RECORD_FORK: 984 return tool->fork(tool, event, sample, machine); 985 case PERF_RECORD_EXIT: 986 return tool->exit(tool, event, sample, machine); 987 case PERF_RECORD_LOST: 988 if (tool->lost == perf_event__process_lost) 989 session->stats.total_lost += event->lost.lost; 990 return tool->lost(tool, event, sample, machine); 991 case PERF_RECORD_READ: 992 return tool->read(tool, event, sample, evsel, machine); 993 case PERF_RECORD_THROTTLE: 994 return tool->throttle(tool, event, sample, machine); 995 case PERF_RECORD_UNTHROTTLE: 996 return tool->unthrottle(tool, event, sample, machine); 997 default: 998 ++session->stats.nr_unknown_events; 999 return -1; 1000 } 1001 } 1002 1003 static int perf_session__process_user_event(struct perf_session *session, union perf_event *event, 1004 struct perf_tool *tool, u64 file_offset) 1005 { 1006 int err; 1007 1008 dump_event(session, event, file_offset, NULL); 1009 1010 /* These events are processed right away */ 1011 switch (event->header.type) { 1012 case PERF_RECORD_HEADER_ATTR: 1013 err = tool->attr(tool, event, &session->evlist); 1014 if (err == 0) 1015 perf_session__set_id_hdr_size(session); 1016 return err; 1017 case PERF_RECORD_HEADER_TRACING_DATA: 1018 /* setup for reading amidst mmap */ 1019 lseek(session->fd, file_offset, SEEK_SET); 1020 return tool->tracing_data(tool, event, session); 1021 case PERF_RECORD_HEADER_BUILD_ID: 1022 return tool->build_id(tool, event, session); 1023 case PERF_RECORD_FINISHED_ROUND: 1024 return tool->finished_round(tool, event, session); 1025 default: 1026 return -EINVAL; 1027 } 1028 } 1029 1030 static void event_swap(union perf_event *event, bool sample_id_all) 1031 { 1032 perf_event__swap_op swap; 1033 1034 swap = perf_event__swap_ops[event->header.type]; 1035 if (swap) 1036 swap(event, sample_id_all); 1037 } 1038 1039 static int perf_session__process_event(struct perf_session *session, 1040 union perf_event *event, 1041 struct perf_tool *tool, 1042 u64 file_offset) 1043 { 1044 struct perf_sample sample; 1045 int ret; 1046 1047 if (session->header.needs_swap) 1048 event_swap(event, perf_evlist__sample_id_all(session->evlist)); 1049 1050 if (event->header.type >= PERF_RECORD_HEADER_MAX) 1051 return -EINVAL; 1052 1053 events_stats__inc(&session->stats, event->header.type); 1054 1055 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1056 return perf_session__process_user_event(session, event, tool, file_offset); 1057 1058 /* 1059 * For all kernel events we get the sample data 1060 */ 1061 ret = perf_evlist__parse_sample(session->evlist, event, &sample); 1062 if (ret) 1063 return ret; 1064 1065 if (tool->ordered_samples) { 1066 ret = perf_session_queue_event(session, event, &sample, 1067 file_offset); 1068 if (ret != -ETIME) 1069 return ret; 1070 } 1071 1072 return perf_session_deliver_event(session, event, &sample, tool, 1073 file_offset); 1074 } 1075 1076 void perf_event_header__bswap(struct perf_event_header *self) 1077 { 1078 self->type = bswap_32(self->type); 1079 self->misc = bswap_16(self->misc); 1080 self->size = bswap_16(self->size); 1081 } 1082 1083 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) 1084 { 1085 return machine__findnew_thread(&session->machines.host, 0, pid); 1086 } 1087 1088 static struct thread *perf_session__register_idle_thread(struct perf_session *self) 1089 { 1090 struct thread *thread = perf_session__findnew(self, 0); 1091 1092 if (thread == NULL || thread__set_comm(thread, "swapper")) { 1093 pr_err("problem inserting idle task.\n"); 1094 thread = NULL; 1095 } 1096 1097 return thread; 1098 } 1099 1100 static void perf_session__warn_about_errors(const struct perf_session *session, 1101 const struct perf_tool *tool) 1102 { 1103 if (tool->lost == perf_event__process_lost && 1104 session->stats.nr_events[PERF_RECORD_LOST] != 0) { 1105 ui__warning("Processed %d events and lost %d chunks!\n\n" 1106 "Check IO/CPU overload!\n\n", 1107 session->stats.nr_events[0], 1108 session->stats.nr_events[PERF_RECORD_LOST]); 1109 } 1110 1111 if (session->stats.nr_unknown_events != 0) { 1112 ui__warning("Found %u unknown events!\n\n" 1113 "Is this an older tool processing a perf.data " 1114 "file generated by a more recent tool?\n\n" 1115 "If that is not the case, consider " 1116 "reporting to linux-kernel@vger.kernel.org.\n\n", 1117 session->stats.nr_unknown_events); 1118 } 1119 1120 if (session->stats.nr_unknown_id != 0) { 1121 ui__warning("%u samples with id not present in the header\n", 1122 session->stats.nr_unknown_id); 1123 } 1124 1125 if (session->stats.nr_invalid_chains != 0) { 1126 ui__warning("Found invalid callchains!\n\n" 1127 "%u out of %u events were discarded for this reason.\n\n" 1128 "Consider reporting to linux-kernel@vger.kernel.org.\n\n", 1129 session->stats.nr_invalid_chains, 1130 session->stats.nr_events[PERF_RECORD_SAMPLE]); 1131 } 1132 1133 if (session->stats.nr_unprocessable_samples != 0) { 1134 ui__warning("%u unprocessable samples recorded.\n" 1135 "Do you have a KVM guest running and not using 'perf kvm'?\n", 1136 session->stats.nr_unprocessable_samples); 1137 } 1138 } 1139 1140 #define session_done() (*(volatile int *)(&session_done)) 1141 volatile int session_done; 1142 1143 static int __perf_session__process_pipe_events(struct perf_session *self, 1144 struct perf_tool *tool) 1145 { 1146 union perf_event *event; 1147 uint32_t size, cur_size = 0; 1148 void *buf = NULL; 1149 int skip = 0; 1150 u64 head; 1151 int err; 1152 void *p; 1153 1154 perf_tool__fill_defaults(tool); 1155 1156 head = 0; 1157 cur_size = sizeof(union perf_event); 1158 1159 buf = malloc(cur_size); 1160 if (!buf) 1161 return -errno; 1162 more: 1163 event = buf; 1164 err = readn(self->fd, event, sizeof(struct perf_event_header)); 1165 if (err <= 0) { 1166 if (err == 0) 1167 goto done; 1168 1169 pr_err("failed to read event header\n"); 1170 goto out_err; 1171 } 1172 1173 if (self->header.needs_swap) 1174 perf_event_header__bswap(&event->header); 1175 1176 size = event->header.size; 1177 if (size < sizeof(struct perf_event_header)) { 1178 pr_err("bad event header size\n"); 1179 goto out_err; 1180 } 1181 1182 if (size > cur_size) { 1183 void *new = realloc(buf, size); 1184 if (!new) { 1185 pr_err("failed to allocate memory to read event\n"); 1186 goto out_err; 1187 } 1188 buf = new; 1189 cur_size = size; 1190 event = buf; 1191 } 1192 p = event; 1193 p += sizeof(struct perf_event_header); 1194 1195 if (size - sizeof(struct perf_event_header)) { 1196 err = readn(self->fd, p, size - sizeof(struct perf_event_header)); 1197 if (err <= 0) { 1198 if (err == 0) { 1199 pr_err("unexpected end of event stream\n"); 1200 goto done; 1201 } 1202 1203 pr_err("failed to read event data\n"); 1204 goto out_err; 1205 } 1206 } 1207 1208 if ((skip = perf_session__process_event(self, event, tool, head)) < 0) { 1209 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1210 head, event->header.size, event->header.type); 1211 err = -EINVAL; 1212 goto out_err; 1213 } 1214 1215 head += size; 1216 1217 if (skip > 0) 1218 head += skip; 1219 1220 if (!session_done()) 1221 goto more; 1222 done: 1223 err = 0; 1224 out_err: 1225 free(buf); 1226 perf_session__warn_about_errors(self, tool); 1227 perf_session_free_sample_buffers(self); 1228 return err; 1229 } 1230 1231 static union perf_event * 1232 fetch_mmaped_event(struct perf_session *session, 1233 u64 head, size_t mmap_size, char *buf) 1234 { 1235 union perf_event *event; 1236 1237 /* 1238 * Ensure we have enough space remaining to read 1239 * the size of the event in the headers. 1240 */ 1241 if (head + sizeof(event->header) > mmap_size) 1242 return NULL; 1243 1244 event = (union perf_event *)(buf + head); 1245 1246 if (session->header.needs_swap) 1247 perf_event_header__bswap(&event->header); 1248 1249 if (head + event->header.size > mmap_size) { 1250 /* We're not fetching the event so swap back again */ 1251 if (session->header.needs_swap) 1252 perf_event_header__bswap(&event->header); 1253 return NULL; 1254 } 1255 1256 return event; 1257 } 1258 1259 /* 1260 * On 64bit we can mmap the data file in one go. No need for tiny mmap 1261 * slices. On 32bit we use 32MB. 1262 */ 1263 #if BITS_PER_LONG == 64 1264 #define MMAP_SIZE ULLONG_MAX 1265 #define NUM_MMAPS 1 1266 #else 1267 #define MMAP_SIZE (32 * 1024 * 1024ULL) 1268 #define NUM_MMAPS 128 1269 #endif 1270 1271 int __perf_session__process_events(struct perf_session *session, 1272 u64 data_offset, u64 data_size, 1273 u64 file_size, struct perf_tool *tool) 1274 { 1275 u64 head, page_offset, file_offset, file_pos, progress_next; 1276 int err, mmap_prot, mmap_flags, map_idx = 0; 1277 size_t mmap_size; 1278 char *buf, *mmaps[NUM_MMAPS]; 1279 union perf_event *event; 1280 uint32_t size; 1281 1282 perf_tool__fill_defaults(tool); 1283 1284 page_offset = page_size * (data_offset / page_size); 1285 file_offset = page_offset; 1286 head = data_offset - page_offset; 1287 1288 if (data_offset + data_size < file_size) 1289 file_size = data_offset + data_size; 1290 1291 progress_next = file_size / 16; 1292 1293 mmap_size = MMAP_SIZE; 1294 if (mmap_size > file_size) 1295 mmap_size = file_size; 1296 1297 memset(mmaps, 0, sizeof(mmaps)); 1298 1299 mmap_prot = PROT_READ; 1300 mmap_flags = MAP_SHARED; 1301 1302 if (session->header.needs_swap) { 1303 mmap_prot |= PROT_WRITE; 1304 mmap_flags = MAP_PRIVATE; 1305 } 1306 remap: 1307 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd, 1308 file_offset); 1309 if (buf == MAP_FAILED) { 1310 pr_err("failed to mmap file\n"); 1311 err = -errno; 1312 goto out_err; 1313 } 1314 mmaps[map_idx] = buf; 1315 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); 1316 file_pos = file_offset + head; 1317 1318 more: 1319 event = fetch_mmaped_event(session, head, mmap_size, buf); 1320 if (!event) { 1321 if (mmaps[map_idx]) { 1322 munmap(mmaps[map_idx], mmap_size); 1323 mmaps[map_idx] = NULL; 1324 } 1325 1326 page_offset = page_size * (head / page_size); 1327 file_offset += page_offset; 1328 head -= page_offset; 1329 goto remap; 1330 } 1331 1332 size = event->header.size; 1333 1334 if (size < sizeof(struct perf_event_header) || 1335 perf_session__process_event(session, event, tool, file_pos) < 0) { 1336 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1337 file_offset + head, event->header.size, 1338 event->header.type); 1339 err = -EINVAL; 1340 goto out_err; 1341 } 1342 1343 head += size; 1344 file_pos += size; 1345 1346 if (file_pos >= progress_next) { 1347 progress_next += file_size / 16; 1348 ui_progress__update(file_pos, file_size, 1349 "Processing events..."); 1350 } 1351 1352 if (file_pos < file_size) 1353 goto more; 1354 1355 err = 0; 1356 /* do the final flush for ordered samples */ 1357 session->ordered_samples.next_flush = ULLONG_MAX; 1358 err = flush_sample_queue(session, tool); 1359 out_err: 1360 ui_progress__finish(); 1361 perf_session__warn_about_errors(session, tool); 1362 perf_session_free_sample_buffers(session); 1363 return err; 1364 } 1365 1366 int perf_session__process_events(struct perf_session *self, 1367 struct perf_tool *tool) 1368 { 1369 int err; 1370 1371 if (perf_session__register_idle_thread(self) == NULL) 1372 return -ENOMEM; 1373 1374 if (!self->fd_pipe) 1375 err = __perf_session__process_events(self, 1376 self->header.data_offset, 1377 self->header.data_size, 1378 self->size, tool); 1379 else 1380 err = __perf_session__process_pipe_events(self, tool); 1381 1382 return err; 1383 } 1384 1385 bool perf_session__has_traces(struct perf_session *session, const char *msg) 1386 { 1387 struct perf_evsel *evsel; 1388 1389 list_for_each_entry(evsel, &session->evlist->entries, node) { 1390 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) 1391 return true; 1392 } 1393 1394 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); 1395 return false; 1396 } 1397 1398 int maps__set_kallsyms_ref_reloc_sym(struct map **maps, 1399 const char *symbol_name, u64 addr) 1400 { 1401 char *bracket; 1402 enum map_type i; 1403 struct ref_reloc_sym *ref; 1404 1405 ref = zalloc(sizeof(struct ref_reloc_sym)); 1406 if (ref == NULL) 1407 return -ENOMEM; 1408 1409 ref->name = strdup(symbol_name); 1410 if (ref->name == NULL) { 1411 free(ref); 1412 return -ENOMEM; 1413 } 1414 1415 bracket = strchr(ref->name, ']'); 1416 if (bracket) 1417 *bracket = '\0'; 1418 1419 ref->addr = addr; 1420 1421 for (i = 0; i < MAP__NR_TYPES; ++i) { 1422 struct kmap *kmap = map__kmap(maps[i]); 1423 kmap->ref_reloc_sym = ref; 1424 } 1425 1426 return 0; 1427 } 1428 1429 size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp) 1430 { 1431 return machines__fprintf_dsos(&self->machines, fp); 1432 } 1433 1434 size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp, 1435 bool (skip)(struct dso *dso, int parm), int parm) 1436 { 1437 return machines__fprintf_dsos_buildid(&self->machines, fp, skip, parm); 1438 } 1439 1440 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) 1441 { 1442 struct perf_evsel *pos; 1443 size_t ret = fprintf(fp, "Aggregated stats:\n"); 1444 1445 ret += events_stats__fprintf(&session->stats, fp); 1446 1447 list_for_each_entry(pos, &session->evlist->entries, node) { 1448 ret += fprintf(fp, "%s stats:\n", perf_evsel__name(pos)); 1449 ret += events_stats__fprintf(&pos->hists.stats, fp); 1450 } 1451 1452 return ret; 1453 } 1454 1455 size_t perf_session__fprintf(struct perf_session *session, FILE *fp) 1456 { 1457 /* 1458 * FIXME: Here we have to actually print all the machines in this 1459 * session, not just the host... 1460 */ 1461 return machine__fprintf(&session->machines.host, fp); 1462 } 1463 1464 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, 1465 unsigned int type) 1466 { 1467 struct perf_evsel *pos; 1468 1469 list_for_each_entry(pos, &session->evlist->entries, node) { 1470 if (pos->attr.type == type) 1471 return pos; 1472 } 1473 return NULL; 1474 } 1475 1476 void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event, 1477 struct perf_sample *sample, struct machine *machine, 1478 unsigned int print_opts, unsigned int stack_depth) 1479 { 1480 struct addr_location al; 1481 struct callchain_cursor_node *node; 1482 int print_ip = print_opts & PRINT_IP_OPT_IP; 1483 int print_sym = print_opts & PRINT_IP_OPT_SYM; 1484 int print_dso = print_opts & PRINT_IP_OPT_DSO; 1485 int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET; 1486 int print_oneline = print_opts & PRINT_IP_OPT_ONELINE; 1487 char s = print_oneline ? ' ' : '\t'; 1488 1489 if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) { 1490 error("problem processing %d event, skipping it.\n", 1491 event->header.type); 1492 return; 1493 } 1494 1495 if (symbol_conf.use_callchain && sample->callchain) { 1496 1497 if (machine__resolve_callchain(machine, evsel, al.thread, 1498 sample, NULL, NULL) != 0) { 1499 if (verbose) 1500 error("Failed to resolve callchain. Skipping\n"); 1501 return; 1502 } 1503 callchain_cursor_commit(&callchain_cursor); 1504 1505 while (stack_depth) { 1506 node = callchain_cursor_current(&callchain_cursor); 1507 if (!node) 1508 break; 1509 1510 if (print_ip) 1511 printf("%c%16" PRIx64, s, node->ip); 1512 1513 if (print_sym) { 1514 printf(" "); 1515 if (print_symoffset) { 1516 al.addr = node->ip; 1517 al.map = node->map; 1518 symbol__fprintf_symname_offs(node->sym, &al, stdout); 1519 } else 1520 symbol__fprintf_symname(node->sym, stdout); 1521 } 1522 1523 if (print_dso) { 1524 printf(" ("); 1525 map__fprintf_dsoname(node->map, stdout); 1526 printf(")"); 1527 } 1528 1529 if (!print_oneline) 1530 printf("\n"); 1531 1532 callchain_cursor_advance(&callchain_cursor); 1533 1534 stack_depth--; 1535 } 1536 1537 } else { 1538 if (print_ip) 1539 printf("%16" PRIx64, sample->ip); 1540 1541 if (print_sym) { 1542 printf(" "); 1543 if (print_symoffset) 1544 symbol__fprintf_symname_offs(al.sym, &al, 1545 stdout); 1546 else 1547 symbol__fprintf_symname(al.sym, stdout); 1548 } 1549 1550 if (print_dso) { 1551 printf(" ("); 1552 map__fprintf_dsoname(al.map, stdout); 1553 printf(")"); 1554 } 1555 } 1556 } 1557 1558 int perf_session__cpu_bitmap(struct perf_session *session, 1559 const char *cpu_list, unsigned long *cpu_bitmap) 1560 { 1561 int i; 1562 struct cpu_map *map; 1563 1564 for (i = 0; i < PERF_TYPE_MAX; ++i) { 1565 struct perf_evsel *evsel; 1566 1567 evsel = perf_session__find_first_evtype(session, i); 1568 if (!evsel) 1569 continue; 1570 1571 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { 1572 pr_err("File does not contain CPU events. " 1573 "Remove -c option to proceed.\n"); 1574 return -1; 1575 } 1576 } 1577 1578 map = cpu_map__new(cpu_list); 1579 if (map == NULL) { 1580 pr_err("Invalid cpu_list\n"); 1581 return -1; 1582 } 1583 1584 for (i = 0; i < map->nr; i++) { 1585 int cpu = map->map[i]; 1586 1587 if (cpu >= MAX_NR_CPUS) { 1588 pr_err("Requested CPU %d too large. " 1589 "Consider raising MAX_NR_CPUS\n", cpu); 1590 return -1; 1591 } 1592 1593 set_bit(cpu, cpu_bitmap); 1594 } 1595 1596 return 0; 1597 } 1598 1599 void perf_session__fprintf_info(struct perf_session *session, FILE *fp, 1600 bool full) 1601 { 1602 struct stat st; 1603 int ret; 1604 1605 if (session == NULL || fp == NULL) 1606 return; 1607 1608 ret = fstat(session->fd, &st); 1609 if (ret == -1) 1610 return; 1611 1612 fprintf(fp, "# ========\n"); 1613 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); 1614 perf_header__fprintf_info(session, fp, full); 1615 fprintf(fp, "# ========\n#\n"); 1616 } 1617 1618 1619 int __perf_session__set_tracepoints_handlers(struct perf_session *session, 1620 const struct perf_evsel_str_handler *assocs, 1621 size_t nr_assocs) 1622 { 1623 struct perf_evsel *evsel; 1624 size_t i; 1625 int err; 1626 1627 for (i = 0; i < nr_assocs; i++) { 1628 /* 1629 * Adding a handler for an event not in the session, 1630 * just ignore it. 1631 */ 1632 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name); 1633 if (evsel == NULL) 1634 continue; 1635 1636 err = -EEXIST; 1637 if (evsel->handler.func != NULL) 1638 goto out; 1639 evsel->handler.func = assocs[i].handler; 1640 } 1641 1642 err = 0; 1643 out: 1644 return err; 1645 } 1646