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 *session) 20 { 21 struct perf_data_file *file = session->file; 22 23 if (perf_session__read_header(session) < 0) { 24 pr_err("incompatible file format (rerun with -v to learn more)"); 25 return -1; 26 } 27 28 if (perf_data_file__is_pipe(file)) 29 return 0; 30 31 if (!perf_evlist__valid_sample_type(session->evlist)) { 32 pr_err("non matching sample_type"); 33 return -1; 34 } 35 36 if (!perf_evlist__valid_sample_id_all(session->evlist)) { 37 pr_err("non matching sample_id_all"); 38 return -1; 39 } 40 41 if (!perf_evlist__valid_read_format(session->evlist)) { 42 pr_err("non matching read_format"); 43 return -1; 44 } 45 46 return 0; 47 } 48 49 void perf_session__set_id_hdr_size(struct perf_session *session) 50 { 51 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist); 52 53 machines__set_id_hdr_size(&session->machines, id_hdr_size); 54 } 55 56 int perf_session__create_kernel_maps(struct perf_session *session) 57 { 58 int ret = machine__create_kernel_maps(&session->machines.host); 59 60 if (ret >= 0) 61 ret = machines__create_guest_kernel_maps(&session->machines); 62 return ret; 63 } 64 65 static void perf_session__destroy_kernel_maps(struct perf_session *session) 66 { 67 machines__destroy_kernel_maps(&session->machines); 68 } 69 70 struct perf_session *perf_session__new(struct perf_data_file *file, 71 bool repipe, struct perf_tool *tool) 72 { 73 struct perf_session *session = zalloc(sizeof(*session)); 74 75 if (!session) 76 goto out; 77 78 session->repipe = repipe; 79 INIT_LIST_HEAD(&session->ordered_samples.samples); 80 INIT_LIST_HEAD(&session->ordered_samples.sample_cache); 81 INIT_LIST_HEAD(&session->ordered_samples.to_free); 82 machines__init(&session->machines); 83 84 if (file) { 85 if (perf_data_file__open(file)) 86 goto out_delete; 87 88 session->file = file; 89 90 if (perf_data_file__is_read(file)) { 91 if (perf_session__open(session) < 0) 92 goto out_close; 93 94 perf_session__set_id_hdr_size(session); 95 } 96 } 97 98 if (!file || perf_data_file__is_write(file)) { 99 /* 100 * In O_RDONLY mode this will be performed when reading the 101 * kernel MMAP event, in perf_event__process_mmap(). 102 */ 103 if (perf_session__create_kernel_maps(session) < 0) 104 goto out_delete; 105 } 106 107 if (tool && tool->ordering_requires_timestamps && 108 tool->ordered_samples && !perf_evlist__sample_id_all(session->evlist)) { 109 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); 110 tool->ordered_samples = false; 111 } 112 113 return session; 114 115 out_close: 116 perf_data_file__close(file); 117 out_delete: 118 perf_session__delete(session); 119 out: 120 return NULL; 121 } 122 123 static void perf_session__delete_dead_threads(struct perf_session *session) 124 { 125 machine__delete_dead_threads(&session->machines.host); 126 } 127 128 static void perf_session__delete_threads(struct perf_session *session) 129 { 130 machine__delete_threads(&session->machines.host); 131 } 132 133 static void perf_session_env__delete(struct perf_session_env *env) 134 { 135 free(env->hostname); 136 free(env->os_release); 137 free(env->version); 138 free(env->arch); 139 free(env->cpu_desc); 140 free(env->cpuid); 141 142 free(env->cmdline); 143 free(env->sibling_cores); 144 free(env->sibling_threads); 145 free(env->numa_nodes); 146 free(env->pmu_mappings); 147 } 148 149 void perf_session__delete(struct perf_session *session) 150 { 151 perf_session__destroy_kernel_maps(session); 152 perf_session__delete_dead_threads(session); 153 perf_session__delete_threads(session); 154 perf_session_env__delete(&session->header.env); 155 machines__exit(&session->machines); 156 if (session->file) 157 perf_data_file__close(session->file); 158 free(session); 159 vdso__exit(); 160 } 161 162 static int process_event_synth_tracing_data_stub(struct perf_tool *tool 163 __maybe_unused, 164 union perf_event *event 165 __maybe_unused, 166 struct perf_session *session 167 __maybe_unused) 168 { 169 dump_printf(": unhandled!\n"); 170 return 0; 171 } 172 173 static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused, 174 union perf_event *event __maybe_unused, 175 struct perf_evlist **pevlist 176 __maybe_unused) 177 { 178 dump_printf(": unhandled!\n"); 179 return 0; 180 } 181 182 static int process_event_sample_stub(struct perf_tool *tool __maybe_unused, 183 union perf_event *event __maybe_unused, 184 struct perf_sample *sample __maybe_unused, 185 struct perf_evsel *evsel __maybe_unused, 186 struct machine *machine __maybe_unused) 187 { 188 dump_printf(": unhandled!\n"); 189 return 0; 190 } 191 192 static int process_event_stub(struct perf_tool *tool __maybe_unused, 193 union perf_event *event __maybe_unused, 194 struct perf_sample *sample __maybe_unused, 195 struct machine *machine __maybe_unused) 196 { 197 dump_printf(": unhandled!\n"); 198 return 0; 199 } 200 201 static int process_finished_round_stub(struct perf_tool *tool __maybe_unused, 202 union perf_event *event __maybe_unused, 203 struct perf_session *perf_session 204 __maybe_unused) 205 { 206 dump_printf(": unhandled!\n"); 207 return 0; 208 } 209 210 static int process_finished_round(struct perf_tool *tool, 211 union perf_event *event, 212 struct perf_session *session); 213 214 void perf_tool__fill_defaults(struct perf_tool *tool) 215 { 216 if (tool->sample == NULL) 217 tool->sample = process_event_sample_stub; 218 if (tool->mmap == NULL) 219 tool->mmap = process_event_stub; 220 if (tool->mmap2 == NULL) 221 tool->mmap2 = process_event_stub; 222 if (tool->comm == NULL) 223 tool->comm = process_event_stub; 224 if (tool->fork == NULL) 225 tool->fork = process_event_stub; 226 if (tool->exit == NULL) 227 tool->exit = process_event_stub; 228 if (tool->lost == NULL) 229 tool->lost = perf_event__process_lost; 230 if (tool->read == NULL) 231 tool->read = process_event_sample_stub; 232 if (tool->throttle == NULL) 233 tool->throttle = process_event_stub; 234 if (tool->unthrottle == NULL) 235 tool->unthrottle = process_event_stub; 236 if (tool->attr == NULL) 237 tool->attr = process_event_synth_attr_stub; 238 if (tool->tracing_data == NULL) 239 tool->tracing_data = process_event_synth_tracing_data_stub; 240 if (tool->build_id == NULL) 241 tool->build_id = process_finished_round_stub; 242 if (tool->finished_round == NULL) { 243 if (tool->ordered_samples) 244 tool->finished_round = process_finished_round; 245 else 246 tool->finished_round = process_finished_round_stub; 247 } 248 } 249 250 static void swap_sample_id_all(union perf_event *event, void *data) 251 { 252 void *end = (void *) event + event->header.size; 253 int size = end - data; 254 255 BUG_ON(size % sizeof(u64)); 256 mem_bswap_64(data, size); 257 } 258 259 static void perf_event__all64_swap(union perf_event *event, 260 bool sample_id_all __maybe_unused) 261 { 262 struct perf_event_header *hdr = &event->header; 263 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); 264 } 265 266 static void perf_event__comm_swap(union perf_event *event, bool sample_id_all) 267 { 268 event->comm.pid = bswap_32(event->comm.pid); 269 event->comm.tid = bswap_32(event->comm.tid); 270 271 if (sample_id_all) { 272 void *data = &event->comm.comm; 273 274 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 275 swap_sample_id_all(event, data); 276 } 277 } 278 279 static void perf_event__mmap_swap(union perf_event *event, 280 bool sample_id_all) 281 { 282 event->mmap.pid = bswap_32(event->mmap.pid); 283 event->mmap.tid = bswap_32(event->mmap.tid); 284 event->mmap.start = bswap_64(event->mmap.start); 285 event->mmap.len = bswap_64(event->mmap.len); 286 event->mmap.pgoff = bswap_64(event->mmap.pgoff); 287 288 if (sample_id_all) { 289 void *data = &event->mmap.filename; 290 291 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 292 swap_sample_id_all(event, data); 293 } 294 } 295 296 static void perf_event__mmap2_swap(union perf_event *event, 297 bool sample_id_all) 298 { 299 event->mmap2.pid = bswap_32(event->mmap2.pid); 300 event->mmap2.tid = bswap_32(event->mmap2.tid); 301 event->mmap2.start = bswap_64(event->mmap2.start); 302 event->mmap2.len = bswap_64(event->mmap2.len); 303 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff); 304 event->mmap2.maj = bswap_32(event->mmap2.maj); 305 event->mmap2.min = bswap_32(event->mmap2.min); 306 event->mmap2.ino = bswap_64(event->mmap2.ino); 307 308 if (sample_id_all) { 309 void *data = &event->mmap2.filename; 310 311 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 312 swap_sample_id_all(event, data); 313 } 314 } 315 static void perf_event__task_swap(union perf_event *event, bool sample_id_all) 316 { 317 event->fork.pid = bswap_32(event->fork.pid); 318 event->fork.tid = bswap_32(event->fork.tid); 319 event->fork.ppid = bswap_32(event->fork.ppid); 320 event->fork.ptid = bswap_32(event->fork.ptid); 321 event->fork.time = bswap_64(event->fork.time); 322 323 if (sample_id_all) 324 swap_sample_id_all(event, &event->fork + 1); 325 } 326 327 static void perf_event__read_swap(union perf_event *event, bool sample_id_all) 328 { 329 event->read.pid = bswap_32(event->read.pid); 330 event->read.tid = bswap_32(event->read.tid); 331 event->read.value = bswap_64(event->read.value); 332 event->read.time_enabled = bswap_64(event->read.time_enabled); 333 event->read.time_running = bswap_64(event->read.time_running); 334 event->read.id = bswap_64(event->read.id); 335 336 if (sample_id_all) 337 swap_sample_id_all(event, &event->read + 1); 338 } 339 340 static void perf_event__throttle_swap(union perf_event *event, 341 bool sample_id_all) 342 { 343 event->throttle.time = bswap_64(event->throttle.time); 344 event->throttle.id = bswap_64(event->throttle.id); 345 event->throttle.stream_id = bswap_64(event->throttle.stream_id); 346 347 if (sample_id_all) 348 swap_sample_id_all(event, &event->throttle + 1); 349 } 350 351 static u8 revbyte(u8 b) 352 { 353 int rev = (b >> 4) | ((b & 0xf) << 4); 354 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2); 355 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1); 356 return (u8) rev; 357 } 358 359 /* 360 * XXX this is hack in attempt to carry flags bitfield 361 * throught endian village. ABI says: 362 * 363 * Bit-fields are allocated from right to left (least to most significant) 364 * on little-endian implementations and from left to right (most to least 365 * significant) on big-endian implementations. 366 * 367 * The above seems to be byte specific, so we need to reverse each 368 * byte of the bitfield. 'Internet' also says this might be implementation 369 * specific and we probably need proper fix and carry perf_event_attr 370 * bitfield flags in separate data file FEAT_ section. Thought this seems 371 * to work for now. 372 */ 373 static void swap_bitfield(u8 *p, unsigned len) 374 { 375 unsigned i; 376 377 for (i = 0; i < len; i++) { 378 *p = revbyte(*p); 379 p++; 380 } 381 } 382 383 /* exported for swapping attributes in file header */ 384 void perf_event__attr_swap(struct perf_event_attr *attr) 385 { 386 attr->type = bswap_32(attr->type); 387 attr->size = bswap_32(attr->size); 388 attr->config = bswap_64(attr->config); 389 attr->sample_period = bswap_64(attr->sample_period); 390 attr->sample_type = bswap_64(attr->sample_type); 391 attr->read_format = bswap_64(attr->read_format); 392 attr->wakeup_events = bswap_32(attr->wakeup_events); 393 attr->bp_type = bswap_32(attr->bp_type); 394 attr->bp_addr = bswap_64(attr->bp_addr); 395 attr->bp_len = bswap_64(attr->bp_len); 396 attr->branch_sample_type = bswap_64(attr->branch_sample_type); 397 attr->sample_regs_user = bswap_64(attr->sample_regs_user); 398 attr->sample_stack_user = bswap_32(attr->sample_stack_user); 399 400 swap_bitfield((u8 *) (&attr->read_format + 1), sizeof(u64)); 401 } 402 403 static void perf_event__hdr_attr_swap(union perf_event *event, 404 bool sample_id_all __maybe_unused) 405 { 406 size_t size; 407 408 perf_event__attr_swap(&event->attr.attr); 409 410 size = event->header.size; 411 size -= (void *)&event->attr.id - (void *)event; 412 mem_bswap_64(event->attr.id, size); 413 } 414 415 static void perf_event__event_type_swap(union perf_event *event, 416 bool sample_id_all __maybe_unused) 417 { 418 event->event_type.event_type.event_id = 419 bswap_64(event->event_type.event_type.event_id); 420 } 421 422 static void perf_event__tracing_data_swap(union perf_event *event, 423 bool sample_id_all __maybe_unused) 424 { 425 event->tracing_data.size = bswap_32(event->tracing_data.size); 426 } 427 428 typedef void (*perf_event__swap_op)(union perf_event *event, 429 bool sample_id_all); 430 431 static perf_event__swap_op perf_event__swap_ops[] = { 432 [PERF_RECORD_MMAP] = perf_event__mmap_swap, 433 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap, 434 [PERF_RECORD_COMM] = perf_event__comm_swap, 435 [PERF_RECORD_FORK] = perf_event__task_swap, 436 [PERF_RECORD_EXIT] = perf_event__task_swap, 437 [PERF_RECORD_LOST] = perf_event__all64_swap, 438 [PERF_RECORD_READ] = perf_event__read_swap, 439 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap, 440 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap, 441 [PERF_RECORD_SAMPLE] = perf_event__all64_swap, 442 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, 443 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, 444 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, 445 [PERF_RECORD_HEADER_BUILD_ID] = NULL, 446 [PERF_RECORD_HEADER_MAX] = NULL, 447 }; 448 449 struct sample_queue { 450 u64 timestamp; 451 u64 file_offset; 452 union perf_event *event; 453 struct list_head list; 454 }; 455 456 static void perf_session_free_sample_buffers(struct perf_session *session) 457 { 458 struct ordered_samples *os = &session->ordered_samples; 459 460 while (!list_empty(&os->to_free)) { 461 struct sample_queue *sq; 462 463 sq = list_entry(os->to_free.next, struct sample_queue, list); 464 list_del(&sq->list); 465 free(sq); 466 } 467 } 468 469 static int perf_session_deliver_event(struct perf_session *session, 470 union perf_event *event, 471 struct perf_sample *sample, 472 struct perf_tool *tool, 473 u64 file_offset); 474 475 static int flush_sample_queue(struct perf_session *s, 476 struct perf_tool *tool) 477 { 478 struct ordered_samples *os = &s->ordered_samples; 479 struct list_head *head = &os->samples; 480 struct sample_queue *tmp, *iter; 481 struct perf_sample sample; 482 u64 limit = os->next_flush; 483 u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL; 484 bool show_progress = limit == ULLONG_MAX; 485 struct ui_progress prog; 486 int ret; 487 488 if (!tool->ordered_samples || !limit) 489 return 0; 490 491 if (show_progress) 492 ui_progress__init(&prog, os->nr_samples, "Processing time ordered events..."); 493 494 list_for_each_entry_safe(iter, tmp, head, list) { 495 if (session_done()) 496 return 0; 497 498 if (iter->timestamp > limit) 499 break; 500 501 ret = perf_evlist__parse_sample(s->evlist, iter->event, &sample); 502 if (ret) 503 pr_err("Can't parse sample, err = %d\n", ret); 504 else { 505 ret = perf_session_deliver_event(s, iter->event, &sample, tool, 506 iter->file_offset); 507 if (ret) 508 return ret; 509 } 510 511 os->last_flush = iter->timestamp; 512 list_del(&iter->list); 513 list_add(&iter->list, &os->sample_cache); 514 515 if (show_progress) 516 ui_progress__update(&prog, 1); 517 } 518 519 if (list_empty(head)) { 520 os->last_sample = NULL; 521 } else if (last_ts <= limit) { 522 os->last_sample = 523 list_entry(head->prev, struct sample_queue, list); 524 } 525 526 os->nr_samples = 0; 527 528 return 0; 529 } 530 531 /* 532 * When perf record finishes a pass on every buffers, it records this pseudo 533 * event. 534 * We record the max timestamp t found in the pass n. 535 * Assuming these timestamps are monotonic across cpus, we know that if 536 * a buffer still has events with timestamps below t, they will be all 537 * available and then read in the pass n + 1. 538 * Hence when we start to read the pass n + 2, we can safely flush every 539 * events with timestamps below t. 540 * 541 * ============ PASS n ================= 542 * CPU 0 | CPU 1 543 * | 544 * cnt1 timestamps | cnt2 timestamps 545 * 1 | 2 546 * 2 | 3 547 * - | 4 <--- max recorded 548 * 549 * ============ PASS n + 1 ============== 550 * CPU 0 | CPU 1 551 * | 552 * cnt1 timestamps | cnt2 timestamps 553 * 3 | 5 554 * 4 | 6 555 * 5 | 7 <---- max recorded 556 * 557 * Flush every events below timestamp 4 558 * 559 * ============ PASS n + 2 ============== 560 * CPU 0 | CPU 1 561 * | 562 * cnt1 timestamps | cnt2 timestamps 563 * 6 | 8 564 * 7 | 9 565 * - | 10 566 * 567 * Flush every events below timestamp 7 568 * etc... 569 */ 570 static int process_finished_round(struct perf_tool *tool, 571 union perf_event *event __maybe_unused, 572 struct perf_session *session) 573 { 574 int ret = flush_sample_queue(session, tool); 575 if (!ret) 576 session->ordered_samples.next_flush = session->ordered_samples.max_timestamp; 577 578 return ret; 579 } 580 581 /* The queue is ordered by time */ 582 static void __queue_event(struct sample_queue *new, struct perf_session *s) 583 { 584 struct ordered_samples *os = &s->ordered_samples; 585 struct sample_queue *sample = os->last_sample; 586 u64 timestamp = new->timestamp; 587 struct list_head *p; 588 589 ++os->nr_samples; 590 os->last_sample = new; 591 592 if (!sample) { 593 list_add(&new->list, &os->samples); 594 os->max_timestamp = timestamp; 595 return; 596 } 597 598 /* 599 * last_sample might point to some random place in the list as it's 600 * the last queued event. We expect that the new event is close to 601 * this. 602 */ 603 if (sample->timestamp <= timestamp) { 604 while (sample->timestamp <= timestamp) { 605 p = sample->list.next; 606 if (p == &os->samples) { 607 list_add_tail(&new->list, &os->samples); 608 os->max_timestamp = timestamp; 609 return; 610 } 611 sample = list_entry(p, struct sample_queue, list); 612 } 613 list_add_tail(&new->list, &sample->list); 614 } else { 615 while (sample->timestamp > timestamp) { 616 p = sample->list.prev; 617 if (p == &os->samples) { 618 list_add(&new->list, &os->samples); 619 return; 620 } 621 sample = list_entry(p, struct sample_queue, list); 622 } 623 list_add(&new->list, &sample->list); 624 } 625 } 626 627 #define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue)) 628 629 int perf_session_queue_event(struct perf_session *s, union perf_event *event, 630 struct perf_sample *sample, u64 file_offset) 631 { 632 struct ordered_samples *os = &s->ordered_samples; 633 struct list_head *sc = &os->sample_cache; 634 u64 timestamp = sample->time; 635 struct sample_queue *new; 636 637 if (!timestamp || timestamp == ~0ULL) 638 return -ETIME; 639 640 if (timestamp < s->ordered_samples.last_flush) { 641 printf("Warning: Timestamp below last timeslice flush\n"); 642 return -EINVAL; 643 } 644 645 if (!list_empty(sc)) { 646 new = list_entry(sc->next, struct sample_queue, list); 647 list_del(&new->list); 648 } else if (os->sample_buffer) { 649 new = os->sample_buffer + os->sample_buffer_idx; 650 if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER) 651 os->sample_buffer = NULL; 652 } else { 653 os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); 654 if (!os->sample_buffer) 655 return -ENOMEM; 656 list_add(&os->sample_buffer->list, &os->to_free); 657 os->sample_buffer_idx = 2; 658 new = os->sample_buffer + 1; 659 } 660 661 new->timestamp = timestamp; 662 new->file_offset = file_offset; 663 new->event = event; 664 665 __queue_event(new, s); 666 667 return 0; 668 } 669 670 static void callchain__printf(struct perf_sample *sample) 671 { 672 unsigned int i; 673 674 printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr); 675 676 for (i = 0; i < sample->callchain->nr; i++) 677 printf("..... %2d: %016" PRIx64 "\n", 678 i, sample->callchain->ips[i]); 679 } 680 681 static void branch_stack__printf(struct perf_sample *sample) 682 { 683 uint64_t i; 684 685 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr); 686 687 for (i = 0; i < sample->branch_stack->nr; i++) 688 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 "\n", 689 i, sample->branch_stack->entries[i].from, 690 sample->branch_stack->entries[i].to); 691 } 692 693 static void regs_dump__printf(u64 mask, u64 *regs) 694 { 695 unsigned rid, i = 0; 696 697 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) { 698 u64 val = regs[i++]; 699 700 printf(".... %-5s 0x%" PRIx64 "\n", 701 perf_reg_name(rid), val); 702 } 703 } 704 705 static void regs_user__printf(struct perf_sample *sample, u64 mask) 706 { 707 struct regs_dump *user_regs = &sample->user_regs; 708 709 if (user_regs->regs) { 710 printf("... user regs: mask 0x%" PRIx64 "\n", mask); 711 regs_dump__printf(mask, user_regs->regs); 712 } 713 } 714 715 static void stack_user__printf(struct stack_dump *dump) 716 { 717 printf("... ustack: size %" PRIu64 ", offset 0x%x\n", 718 dump->size, dump->offset); 719 } 720 721 static void perf_session__print_tstamp(struct perf_session *session, 722 union perf_event *event, 723 struct perf_sample *sample) 724 { 725 u64 sample_type = __perf_evlist__combined_sample_type(session->evlist); 726 727 if (event->header.type != PERF_RECORD_SAMPLE && 728 !perf_evlist__sample_id_all(session->evlist)) { 729 fputs("-1 -1 ", stdout); 730 return; 731 } 732 733 if ((sample_type & PERF_SAMPLE_CPU)) 734 printf("%u ", sample->cpu); 735 736 if (sample_type & PERF_SAMPLE_TIME) 737 printf("%" PRIu64 " ", sample->time); 738 } 739 740 static void sample_read__printf(struct perf_sample *sample, u64 read_format) 741 { 742 printf("... sample_read:\n"); 743 744 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 745 printf("...... time enabled %016" PRIx64 "\n", 746 sample->read.time_enabled); 747 748 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 749 printf("...... time running %016" PRIx64 "\n", 750 sample->read.time_running); 751 752 if (read_format & PERF_FORMAT_GROUP) { 753 u64 i; 754 755 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr); 756 757 for (i = 0; i < sample->read.group.nr; i++) { 758 struct sample_read_value *value; 759 760 value = &sample->read.group.values[i]; 761 printf("..... id %016" PRIx64 762 ", value %016" PRIx64 "\n", 763 value->id, value->value); 764 } 765 } else 766 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n", 767 sample->read.one.id, sample->read.one.value); 768 } 769 770 static void dump_event(struct perf_session *session, union perf_event *event, 771 u64 file_offset, struct perf_sample *sample) 772 { 773 if (!dump_trace) 774 return; 775 776 printf("\n%#" PRIx64 " [%#x]: event: %d\n", 777 file_offset, event->header.size, event->header.type); 778 779 trace_event(event); 780 781 if (sample) 782 perf_session__print_tstamp(session, event, sample); 783 784 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, 785 event->header.size, perf_event__name(event->header.type)); 786 } 787 788 static void dump_sample(struct perf_evsel *evsel, union perf_event *event, 789 struct perf_sample *sample) 790 { 791 u64 sample_type; 792 793 if (!dump_trace) 794 return; 795 796 printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", 797 event->header.misc, sample->pid, sample->tid, sample->ip, 798 sample->period, sample->addr); 799 800 sample_type = evsel->attr.sample_type; 801 802 if (sample_type & PERF_SAMPLE_CALLCHAIN) 803 callchain__printf(sample); 804 805 if (sample_type & PERF_SAMPLE_BRANCH_STACK) 806 branch_stack__printf(sample); 807 808 if (sample_type & PERF_SAMPLE_REGS_USER) 809 regs_user__printf(sample, evsel->attr.sample_regs_user); 810 811 if (sample_type & PERF_SAMPLE_STACK_USER) 812 stack_user__printf(&sample->user_stack); 813 814 if (sample_type & PERF_SAMPLE_WEIGHT) 815 printf("... weight: %" PRIu64 "\n", sample->weight); 816 817 if (sample_type & PERF_SAMPLE_DATA_SRC) 818 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src); 819 820 if (sample_type & PERF_SAMPLE_TRANSACTION) 821 printf("... transaction: %" PRIx64 "\n", sample->transaction); 822 823 if (sample_type & PERF_SAMPLE_READ) 824 sample_read__printf(sample, evsel->attr.read_format); 825 } 826 827 static struct machine * 828 perf_session__find_machine_for_cpumode(struct perf_session *session, 829 union perf_event *event, 830 struct perf_sample *sample) 831 { 832 const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; 833 834 if (perf_guest && 835 ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || 836 (cpumode == PERF_RECORD_MISC_GUEST_USER))) { 837 u32 pid; 838 839 if (event->header.type == PERF_RECORD_MMAP 840 || event->header.type == PERF_RECORD_MMAP2) 841 pid = event->mmap.pid; 842 else 843 pid = sample->pid; 844 845 return perf_session__findnew_machine(session, pid); 846 } 847 848 return &session->machines.host; 849 } 850 851 static int deliver_sample_value(struct perf_session *session, 852 struct perf_tool *tool, 853 union perf_event *event, 854 struct perf_sample *sample, 855 struct sample_read_value *v, 856 struct machine *machine) 857 { 858 struct perf_sample_id *sid; 859 860 sid = perf_evlist__id2sid(session->evlist, v->id); 861 if (sid) { 862 sample->id = v->id; 863 sample->period = v->value - sid->period; 864 sid->period = v->value; 865 } 866 867 if (!sid || sid->evsel == NULL) { 868 ++session->stats.nr_unknown_id; 869 return 0; 870 } 871 872 return tool->sample(tool, event, sample, sid->evsel, machine); 873 } 874 875 static int deliver_sample_group(struct perf_session *session, 876 struct perf_tool *tool, 877 union perf_event *event, 878 struct perf_sample *sample, 879 struct machine *machine) 880 { 881 int ret = -EINVAL; 882 u64 i; 883 884 for (i = 0; i < sample->read.group.nr; i++) { 885 ret = deliver_sample_value(session, tool, event, sample, 886 &sample->read.group.values[i], 887 machine); 888 if (ret) 889 break; 890 } 891 892 return ret; 893 } 894 895 static int 896 perf_session__deliver_sample(struct perf_session *session, 897 struct perf_tool *tool, 898 union perf_event *event, 899 struct perf_sample *sample, 900 struct perf_evsel *evsel, 901 struct machine *machine) 902 { 903 /* We know evsel != NULL. */ 904 u64 sample_type = evsel->attr.sample_type; 905 u64 read_format = evsel->attr.read_format; 906 907 /* Standard sample delievery. */ 908 if (!(sample_type & PERF_SAMPLE_READ)) 909 return tool->sample(tool, event, sample, evsel, machine); 910 911 /* For PERF_SAMPLE_READ we have either single or group mode. */ 912 if (read_format & PERF_FORMAT_GROUP) 913 return deliver_sample_group(session, tool, event, sample, 914 machine); 915 else 916 return deliver_sample_value(session, tool, event, sample, 917 &sample->read.one, machine); 918 } 919 920 static int perf_session_deliver_event(struct perf_session *session, 921 union perf_event *event, 922 struct perf_sample *sample, 923 struct perf_tool *tool, 924 u64 file_offset) 925 { 926 struct perf_evsel *evsel; 927 struct machine *machine; 928 929 dump_event(session, event, file_offset, sample); 930 931 evsel = perf_evlist__id2evsel(session->evlist, sample->id); 932 if (evsel != NULL && event->header.type != PERF_RECORD_SAMPLE) { 933 /* 934 * XXX We're leaving PERF_RECORD_SAMPLE unnacounted here 935 * because the tools right now may apply filters, discarding 936 * some of the samples. For consistency, in the future we 937 * should have something like nr_filtered_samples and remove 938 * the sample->period from total_sample_period, etc, KISS for 939 * now tho. 940 * 941 * Also testing against NULL allows us to handle files without 942 * attr.sample_id_all and/or without PERF_SAMPLE_ID. In the 943 * future probably it'll be a good idea to restrict event 944 * processing via perf_session to files with both set. 945 */ 946 hists__inc_nr_events(&evsel->hists, event->header.type); 947 } 948 949 machine = perf_session__find_machine_for_cpumode(session, event, 950 sample); 951 952 switch (event->header.type) { 953 case PERF_RECORD_SAMPLE: 954 dump_sample(evsel, event, sample); 955 if (evsel == NULL) { 956 ++session->stats.nr_unknown_id; 957 return 0; 958 } 959 if (machine == NULL) { 960 ++session->stats.nr_unprocessable_samples; 961 return 0; 962 } 963 return perf_session__deliver_sample(session, tool, event, 964 sample, evsel, machine); 965 case PERF_RECORD_MMAP: 966 return tool->mmap(tool, event, sample, machine); 967 case PERF_RECORD_MMAP2: 968 return tool->mmap2(tool, event, sample, machine); 969 case PERF_RECORD_COMM: 970 return tool->comm(tool, event, sample, machine); 971 case PERF_RECORD_FORK: 972 return tool->fork(tool, event, sample, machine); 973 case PERF_RECORD_EXIT: 974 return tool->exit(tool, event, sample, machine); 975 case PERF_RECORD_LOST: 976 if (tool->lost == perf_event__process_lost) 977 session->stats.total_lost += event->lost.lost; 978 return tool->lost(tool, event, sample, machine); 979 case PERF_RECORD_READ: 980 return tool->read(tool, event, sample, evsel, machine); 981 case PERF_RECORD_THROTTLE: 982 return tool->throttle(tool, event, sample, machine); 983 case PERF_RECORD_UNTHROTTLE: 984 return tool->unthrottle(tool, event, sample, machine); 985 default: 986 ++session->stats.nr_unknown_events; 987 return -1; 988 } 989 } 990 991 static int perf_session__process_user_event(struct perf_session *session, union perf_event *event, 992 struct perf_tool *tool, u64 file_offset) 993 { 994 int fd = perf_data_file__fd(session->file); 995 int err; 996 997 dump_event(session, event, file_offset, NULL); 998 999 /* These events are processed right away */ 1000 switch (event->header.type) { 1001 case PERF_RECORD_HEADER_ATTR: 1002 err = tool->attr(tool, event, &session->evlist); 1003 if (err == 0) 1004 perf_session__set_id_hdr_size(session); 1005 return err; 1006 case PERF_RECORD_HEADER_TRACING_DATA: 1007 /* setup for reading amidst mmap */ 1008 lseek(fd, file_offset, SEEK_SET); 1009 return tool->tracing_data(tool, event, session); 1010 case PERF_RECORD_HEADER_BUILD_ID: 1011 return tool->build_id(tool, event, session); 1012 case PERF_RECORD_FINISHED_ROUND: 1013 return tool->finished_round(tool, event, session); 1014 default: 1015 return -EINVAL; 1016 } 1017 } 1018 1019 static void event_swap(union perf_event *event, bool sample_id_all) 1020 { 1021 perf_event__swap_op swap; 1022 1023 swap = perf_event__swap_ops[event->header.type]; 1024 if (swap) 1025 swap(event, sample_id_all); 1026 } 1027 1028 static int perf_session__process_event(struct perf_session *session, 1029 union perf_event *event, 1030 struct perf_tool *tool, 1031 u64 file_offset) 1032 { 1033 struct perf_sample sample; 1034 int ret; 1035 1036 if (session->header.needs_swap) 1037 event_swap(event, perf_evlist__sample_id_all(session->evlist)); 1038 1039 if (event->header.type >= PERF_RECORD_HEADER_MAX) 1040 return -EINVAL; 1041 1042 events_stats__inc(&session->stats, event->header.type); 1043 1044 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1045 return perf_session__process_user_event(session, event, tool, file_offset); 1046 1047 /* 1048 * For all kernel events we get the sample data 1049 */ 1050 ret = perf_evlist__parse_sample(session->evlist, event, &sample); 1051 if (ret) 1052 return ret; 1053 1054 if (tool->ordered_samples) { 1055 ret = perf_session_queue_event(session, event, &sample, 1056 file_offset); 1057 if (ret != -ETIME) 1058 return ret; 1059 } 1060 1061 return perf_session_deliver_event(session, event, &sample, tool, 1062 file_offset); 1063 } 1064 1065 void perf_event_header__bswap(struct perf_event_header *hdr) 1066 { 1067 hdr->type = bswap_32(hdr->type); 1068 hdr->misc = bswap_16(hdr->misc); 1069 hdr->size = bswap_16(hdr->size); 1070 } 1071 1072 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) 1073 { 1074 return machine__findnew_thread(&session->machines.host, 0, pid); 1075 } 1076 1077 static struct thread *perf_session__register_idle_thread(struct perf_session *session) 1078 { 1079 struct thread *thread = perf_session__findnew(session, 0); 1080 1081 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) { 1082 pr_err("problem inserting idle task.\n"); 1083 thread = NULL; 1084 } 1085 1086 return thread; 1087 } 1088 1089 static void perf_session__warn_about_errors(const struct perf_session *session, 1090 const struct perf_tool *tool) 1091 { 1092 if (tool->lost == perf_event__process_lost && 1093 session->stats.nr_events[PERF_RECORD_LOST] != 0) { 1094 ui__warning("Processed %d events and lost %d chunks!\n\n" 1095 "Check IO/CPU overload!\n\n", 1096 session->stats.nr_events[0], 1097 session->stats.nr_events[PERF_RECORD_LOST]); 1098 } 1099 1100 if (session->stats.nr_unknown_events != 0) { 1101 ui__warning("Found %u unknown events!\n\n" 1102 "Is this an older tool processing a perf.data " 1103 "file generated by a more recent tool?\n\n" 1104 "If that is not the case, consider " 1105 "reporting to linux-kernel@vger.kernel.org.\n\n", 1106 session->stats.nr_unknown_events); 1107 } 1108 1109 if (session->stats.nr_unknown_id != 0) { 1110 ui__warning("%u samples with id not present in the header\n", 1111 session->stats.nr_unknown_id); 1112 } 1113 1114 if (session->stats.nr_invalid_chains != 0) { 1115 ui__warning("Found invalid callchains!\n\n" 1116 "%u out of %u events were discarded for this reason.\n\n" 1117 "Consider reporting to linux-kernel@vger.kernel.org.\n\n", 1118 session->stats.nr_invalid_chains, 1119 session->stats.nr_events[PERF_RECORD_SAMPLE]); 1120 } 1121 1122 if (session->stats.nr_unprocessable_samples != 0) { 1123 ui__warning("%u unprocessable samples recorded.\n" 1124 "Do you have a KVM guest running and not using 'perf kvm'?\n", 1125 session->stats.nr_unprocessable_samples); 1126 } 1127 } 1128 1129 volatile int session_done; 1130 1131 static int __perf_session__process_pipe_events(struct perf_session *session, 1132 struct perf_tool *tool) 1133 { 1134 int fd = perf_data_file__fd(session->file); 1135 union perf_event *event; 1136 uint32_t size, cur_size = 0; 1137 void *buf = NULL; 1138 int skip = 0; 1139 u64 head; 1140 ssize_t err; 1141 void *p; 1142 1143 perf_tool__fill_defaults(tool); 1144 1145 head = 0; 1146 cur_size = sizeof(union perf_event); 1147 1148 buf = malloc(cur_size); 1149 if (!buf) 1150 return -errno; 1151 more: 1152 event = buf; 1153 err = readn(fd, event, sizeof(struct perf_event_header)); 1154 if (err <= 0) { 1155 if (err == 0) 1156 goto done; 1157 1158 pr_err("failed to read event header\n"); 1159 goto out_err; 1160 } 1161 1162 if (session->header.needs_swap) 1163 perf_event_header__bswap(&event->header); 1164 1165 size = event->header.size; 1166 if (size < sizeof(struct perf_event_header)) { 1167 pr_err("bad event header size\n"); 1168 goto out_err; 1169 } 1170 1171 if (size > cur_size) { 1172 void *new = realloc(buf, size); 1173 if (!new) { 1174 pr_err("failed to allocate memory to read event\n"); 1175 goto out_err; 1176 } 1177 buf = new; 1178 cur_size = size; 1179 event = buf; 1180 } 1181 p = event; 1182 p += sizeof(struct perf_event_header); 1183 1184 if (size - sizeof(struct perf_event_header)) { 1185 err = readn(fd, p, size - sizeof(struct perf_event_header)); 1186 if (err <= 0) { 1187 if (err == 0) { 1188 pr_err("unexpected end of event stream\n"); 1189 goto done; 1190 } 1191 1192 pr_err("failed to read event data\n"); 1193 goto out_err; 1194 } 1195 } 1196 1197 if ((skip = perf_session__process_event(session, event, tool, head)) < 0) { 1198 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1199 head, event->header.size, event->header.type); 1200 err = -EINVAL; 1201 goto out_err; 1202 } 1203 1204 head += size; 1205 1206 if (skip > 0) 1207 head += skip; 1208 1209 if (!session_done()) 1210 goto more; 1211 done: 1212 /* do the final flush for ordered samples */ 1213 session->ordered_samples.next_flush = ULLONG_MAX; 1214 err = flush_sample_queue(session, tool); 1215 out_err: 1216 free(buf); 1217 perf_session__warn_about_errors(session, tool); 1218 perf_session_free_sample_buffers(session); 1219 return err; 1220 } 1221 1222 static union perf_event * 1223 fetch_mmaped_event(struct perf_session *session, 1224 u64 head, size_t mmap_size, char *buf) 1225 { 1226 union perf_event *event; 1227 1228 /* 1229 * Ensure we have enough space remaining to read 1230 * the size of the event in the headers. 1231 */ 1232 if (head + sizeof(event->header) > mmap_size) 1233 return NULL; 1234 1235 event = (union perf_event *)(buf + head); 1236 1237 if (session->header.needs_swap) 1238 perf_event_header__bswap(&event->header); 1239 1240 if (head + event->header.size > mmap_size) { 1241 /* We're not fetching the event so swap back again */ 1242 if (session->header.needs_swap) 1243 perf_event_header__bswap(&event->header); 1244 return NULL; 1245 } 1246 1247 return event; 1248 } 1249 1250 /* 1251 * On 64bit we can mmap the data file in one go. No need for tiny mmap 1252 * slices. On 32bit we use 32MB. 1253 */ 1254 #if BITS_PER_LONG == 64 1255 #define MMAP_SIZE ULLONG_MAX 1256 #define NUM_MMAPS 1 1257 #else 1258 #define MMAP_SIZE (32 * 1024 * 1024ULL) 1259 #define NUM_MMAPS 128 1260 #endif 1261 1262 int __perf_session__process_events(struct perf_session *session, 1263 u64 data_offset, u64 data_size, 1264 u64 file_size, struct perf_tool *tool) 1265 { 1266 int fd = perf_data_file__fd(session->file); 1267 u64 head, page_offset, file_offset, file_pos; 1268 int err, mmap_prot, mmap_flags, map_idx = 0; 1269 size_t mmap_size; 1270 char *buf, *mmaps[NUM_MMAPS]; 1271 union perf_event *event; 1272 uint32_t size; 1273 struct ui_progress prog; 1274 1275 perf_tool__fill_defaults(tool); 1276 1277 page_offset = page_size * (data_offset / page_size); 1278 file_offset = page_offset; 1279 head = data_offset - page_offset; 1280 1281 if (data_size && (data_offset + data_size < file_size)) 1282 file_size = data_offset + data_size; 1283 1284 ui_progress__init(&prog, file_size, "Processing events..."); 1285 1286 mmap_size = MMAP_SIZE; 1287 if (mmap_size > file_size) 1288 mmap_size = file_size; 1289 1290 memset(mmaps, 0, sizeof(mmaps)); 1291 1292 mmap_prot = PROT_READ; 1293 mmap_flags = MAP_SHARED; 1294 1295 if (session->header.needs_swap) { 1296 mmap_prot |= PROT_WRITE; 1297 mmap_flags = MAP_PRIVATE; 1298 } 1299 remap: 1300 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd, 1301 file_offset); 1302 if (buf == MAP_FAILED) { 1303 pr_err("failed to mmap file\n"); 1304 err = -errno; 1305 goto out_err; 1306 } 1307 mmaps[map_idx] = buf; 1308 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); 1309 file_pos = file_offset + head; 1310 1311 more: 1312 event = fetch_mmaped_event(session, head, mmap_size, buf); 1313 if (!event) { 1314 if (mmaps[map_idx]) { 1315 munmap(mmaps[map_idx], mmap_size); 1316 mmaps[map_idx] = NULL; 1317 } 1318 1319 page_offset = page_size * (head / page_size); 1320 file_offset += page_offset; 1321 head -= page_offset; 1322 goto remap; 1323 } 1324 1325 size = event->header.size; 1326 1327 if (size < sizeof(struct perf_event_header) || 1328 perf_session__process_event(session, event, tool, file_pos) < 0) { 1329 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1330 file_offset + head, event->header.size, 1331 event->header.type); 1332 err = -EINVAL; 1333 goto out_err; 1334 } 1335 1336 head += size; 1337 file_pos += size; 1338 1339 ui_progress__update(&prog, size); 1340 1341 if (session_done()) 1342 goto out; 1343 1344 if (file_pos < file_size) 1345 goto more; 1346 1347 out: 1348 /* do the final flush for ordered samples */ 1349 session->ordered_samples.next_flush = ULLONG_MAX; 1350 err = flush_sample_queue(session, tool); 1351 out_err: 1352 ui_progress__finish(); 1353 perf_session__warn_about_errors(session, tool); 1354 perf_session_free_sample_buffers(session); 1355 return err; 1356 } 1357 1358 int perf_session__process_events(struct perf_session *session, 1359 struct perf_tool *tool) 1360 { 1361 u64 size = perf_data_file__size(session->file); 1362 int err; 1363 1364 if (perf_session__register_idle_thread(session) == NULL) 1365 return -ENOMEM; 1366 1367 if (!perf_data_file__is_pipe(session->file)) 1368 err = __perf_session__process_events(session, 1369 session->header.data_offset, 1370 session->header.data_size, 1371 size, tool); 1372 else 1373 err = __perf_session__process_pipe_events(session, tool); 1374 1375 return err; 1376 } 1377 1378 bool perf_session__has_traces(struct perf_session *session, const char *msg) 1379 { 1380 struct perf_evsel *evsel; 1381 1382 list_for_each_entry(evsel, &session->evlist->entries, node) { 1383 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) 1384 return true; 1385 } 1386 1387 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); 1388 return false; 1389 } 1390 1391 int maps__set_kallsyms_ref_reloc_sym(struct map **maps, 1392 const char *symbol_name, u64 addr) 1393 { 1394 char *bracket; 1395 enum map_type i; 1396 struct ref_reloc_sym *ref; 1397 1398 ref = zalloc(sizeof(struct ref_reloc_sym)); 1399 if (ref == NULL) 1400 return -ENOMEM; 1401 1402 ref->name = strdup(symbol_name); 1403 if (ref->name == NULL) { 1404 free(ref); 1405 return -ENOMEM; 1406 } 1407 1408 bracket = strchr(ref->name, ']'); 1409 if (bracket) 1410 *bracket = '\0'; 1411 1412 ref->addr = addr; 1413 1414 for (i = 0; i < MAP__NR_TYPES; ++i) { 1415 struct kmap *kmap = map__kmap(maps[i]); 1416 kmap->ref_reloc_sym = ref; 1417 } 1418 1419 return 0; 1420 } 1421 1422 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp) 1423 { 1424 return machines__fprintf_dsos(&session->machines, fp); 1425 } 1426 1427 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp, 1428 bool (skip)(struct dso *dso, int parm), int parm) 1429 { 1430 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm); 1431 } 1432 1433 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) 1434 { 1435 struct perf_evsel *pos; 1436 size_t ret = fprintf(fp, "Aggregated stats:\n"); 1437 1438 ret += events_stats__fprintf(&session->stats, fp); 1439 1440 list_for_each_entry(pos, &session->evlist->entries, node) { 1441 ret += fprintf(fp, "%s stats:\n", perf_evsel__name(pos)); 1442 ret += events_stats__fprintf(&pos->hists.stats, fp); 1443 } 1444 1445 return ret; 1446 } 1447 1448 size_t perf_session__fprintf(struct perf_session *session, FILE *fp) 1449 { 1450 /* 1451 * FIXME: Here we have to actually print all the machines in this 1452 * session, not just the host... 1453 */ 1454 return machine__fprintf(&session->machines.host, fp); 1455 } 1456 1457 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, 1458 unsigned int type) 1459 { 1460 struct perf_evsel *pos; 1461 1462 list_for_each_entry(pos, &session->evlist->entries, node) { 1463 if (pos->attr.type == type) 1464 return pos; 1465 } 1466 return NULL; 1467 } 1468 1469 void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample, 1470 struct machine *machine, struct addr_location *al, 1471 unsigned int print_opts, unsigned int stack_depth) 1472 { 1473 struct callchain_cursor_node *node; 1474 int print_ip = print_opts & PRINT_IP_OPT_IP; 1475 int print_sym = print_opts & PRINT_IP_OPT_SYM; 1476 int print_dso = print_opts & PRINT_IP_OPT_DSO; 1477 int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET; 1478 int print_oneline = print_opts & PRINT_IP_OPT_ONELINE; 1479 int print_srcline = print_opts & PRINT_IP_OPT_SRCLINE; 1480 char s = print_oneline ? ' ' : '\t'; 1481 1482 if (symbol_conf.use_callchain && sample->callchain) { 1483 struct addr_location node_al; 1484 1485 if (machine__resolve_callchain(machine, evsel, al->thread, 1486 sample, NULL, NULL, 1487 PERF_MAX_STACK_DEPTH) != 0) { 1488 if (verbose) 1489 error("Failed to resolve callchain. Skipping\n"); 1490 return; 1491 } 1492 callchain_cursor_commit(&callchain_cursor); 1493 1494 if (print_symoffset) 1495 node_al = *al; 1496 1497 while (stack_depth) { 1498 u64 addr = 0; 1499 1500 node = callchain_cursor_current(&callchain_cursor); 1501 if (!node) 1502 break; 1503 1504 if (node->sym && node->sym->ignore) 1505 goto next; 1506 1507 if (print_ip) 1508 printf("%c%16" PRIx64, s, node->ip); 1509 1510 if (node->map) 1511 addr = node->map->map_ip(node->map, node->ip); 1512 1513 if (print_sym) { 1514 printf(" "); 1515 if (print_symoffset) { 1516 node_al.addr = addr; 1517 node_al.map = node->map; 1518 symbol__fprintf_symname_offs(node->sym, &node_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_srcline) 1530 map__fprintf_srcline(node->map, addr, "\n ", 1531 stdout); 1532 1533 if (!print_oneline) 1534 printf("\n"); 1535 1536 stack_depth--; 1537 next: 1538 callchain_cursor_advance(&callchain_cursor); 1539 } 1540 1541 } else { 1542 if (al->sym && al->sym->ignore) 1543 return; 1544 1545 if (print_ip) 1546 printf("%16" PRIx64, sample->ip); 1547 1548 if (print_sym) { 1549 printf(" "); 1550 if (print_symoffset) 1551 symbol__fprintf_symname_offs(al->sym, al, 1552 stdout); 1553 else 1554 symbol__fprintf_symname(al->sym, stdout); 1555 } 1556 1557 if (print_dso) { 1558 printf(" ("); 1559 map__fprintf_dsoname(al->map, stdout); 1560 printf(")"); 1561 } 1562 1563 if (print_srcline) 1564 map__fprintf_srcline(al->map, al->addr, "\n ", stdout); 1565 } 1566 } 1567 1568 int perf_session__cpu_bitmap(struct perf_session *session, 1569 const char *cpu_list, unsigned long *cpu_bitmap) 1570 { 1571 int i; 1572 struct cpu_map *map; 1573 1574 for (i = 0; i < PERF_TYPE_MAX; ++i) { 1575 struct perf_evsel *evsel; 1576 1577 evsel = perf_session__find_first_evtype(session, i); 1578 if (!evsel) 1579 continue; 1580 1581 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { 1582 pr_err("File does not contain CPU events. " 1583 "Remove -c option to proceed.\n"); 1584 return -1; 1585 } 1586 } 1587 1588 map = cpu_map__new(cpu_list); 1589 if (map == NULL) { 1590 pr_err("Invalid cpu_list\n"); 1591 return -1; 1592 } 1593 1594 for (i = 0; i < map->nr; i++) { 1595 int cpu = map->map[i]; 1596 1597 if (cpu >= MAX_NR_CPUS) { 1598 pr_err("Requested CPU %d too large. " 1599 "Consider raising MAX_NR_CPUS\n", cpu); 1600 return -1; 1601 } 1602 1603 set_bit(cpu, cpu_bitmap); 1604 } 1605 1606 return 0; 1607 } 1608 1609 void perf_session__fprintf_info(struct perf_session *session, FILE *fp, 1610 bool full) 1611 { 1612 int fd = perf_data_file__fd(session->file); 1613 struct stat st; 1614 int ret; 1615 1616 if (session == NULL || fp == NULL) 1617 return; 1618 1619 ret = fstat(fd, &st); 1620 if (ret == -1) 1621 return; 1622 1623 fprintf(fp, "# ========\n"); 1624 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); 1625 perf_header__fprintf_info(session, fp, full); 1626 fprintf(fp, "# ========\n#\n"); 1627 } 1628 1629 1630 int __perf_session__set_tracepoints_handlers(struct perf_session *session, 1631 const struct perf_evsel_str_handler *assocs, 1632 size_t nr_assocs) 1633 { 1634 struct perf_evsel *evsel; 1635 size_t i; 1636 int err; 1637 1638 for (i = 0; i < nr_assocs; i++) { 1639 /* 1640 * Adding a handler for an event not in the session, 1641 * just ignore it. 1642 */ 1643 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name); 1644 if (evsel == NULL) 1645 continue; 1646 1647 err = -EEXIST; 1648 if (evsel->handler != NULL) 1649 goto out; 1650 evsel->handler = assocs[i].handler; 1651 } 1652 1653 err = 0; 1654 out: 1655 return err; 1656 } 1657