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 "asm/bug.h" 18 #include "auxtrace.h" 19 #include "thread-stack.h" 20 #include "stat.h" 21 22 static int perf_session__deliver_event(struct perf_session *session, 23 union perf_event *event, 24 struct perf_sample *sample, 25 struct perf_tool *tool, 26 u64 file_offset); 27 28 static int perf_session__open(struct perf_session *session) 29 { 30 struct perf_data_file *file = session->file; 31 32 if (perf_session__read_header(session) < 0) { 33 pr_err("incompatible file format (rerun with -v to learn more)\n"); 34 return -1; 35 } 36 37 if (perf_data_file__is_pipe(file)) 38 return 0; 39 40 if (perf_header__has_feat(&session->header, HEADER_STAT)) 41 return 0; 42 43 if (!perf_evlist__valid_sample_type(session->evlist)) { 44 pr_err("non matching sample_type\n"); 45 return -1; 46 } 47 48 if (!perf_evlist__valid_sample_id_all(session->evlist)) { 49 pr_err("non matching sample_id_all\n"); 50 return -1; 51 } 52 53 if (!perf_evlist__valid_read_format(session->evlist)) { 54 pr_err("non matching read_format\n"); 55 return -1; 56 } 57 58 return 0; 59 } 60 61 void perf_session__set_id_hdr_size(struct perf_session *session) 62 { 63 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist); 64 65 machines__set_id_hdr_size(&session->machines, id_hdr_size); 66 } 67 68 int perf_session__create_kernel_maps(struct perf_session *session) 69 { 70 int ret = machine__create_kernel_maps(&session->machines.host); 71 72 if (ret >= 0) 73 ret = machines__create_guest_kernel_maps(&session->machines); 74 return ret; 75 } 76 77 static void perf_session__destroy_kernel_maps(struct perf_session *session) 78 { 79 machines__destroy_kernel_maps(&session->machines); 80 } 81 82 static bool perf_session__has_comm_exec(struct perf_session *session) 83 { 84 struct perf_evsel *evsel; 85 86 evlist__for_each(session->evlist, evsel) { 87 if (evsel->attr.comm_exec) 88 return true; 89 } 90 91 return false; 92 } 93 94 static void perf_session__set_comm_exec(struct perf_session *session) 95 { 96 bool comm_exec = perf_session__has_comm_exec(session); 97 98 machines__set_comm_exec(&session->machines, comm_exec); 99 } 100 101 static int ordered_events__deliver_event(struct ordered_events *oe, 102 struct ordered_event *event) 103 { 104 struct perf_sample sample; 105 struct perf_session *session = container_of(oe, struct perf_session, 106 ordered_events); 107 int ret = perf_evlist__parse_sample(session->evlist, event->event, &sample); 108 109 if (ret) { 110 pr_err("Can't parse sample, err = %d\n", ret); 111 return ret; 112 } 113 114 return perf_session__deliver_event(session, event->event, &sample, 115 session->tool, event->file_offset); 116 } 117 118 struct perf_session *perf_session__new(struct perf_data_file *file, 119 bool repipe, struct perf_tool *tool) 120 { 121 struct perf_session *session = zalloc(sizeof(*session)); 122 123 if (!session) 124 goto out; 125 126 session->repipe = repipe; 127 session->tool = tool; 128 INIT_LIST_HEAD(&session->auxtrace_index); 129 machines__init(&session->machines); 130 ordered_events__init(&session->ordered_events, ordered_events__deliver_event); 131 132 if (file) { 133 if (perf_data_file__open(file)) 134 goto out_delete; 135 136 session->file = file; 137 138 if (perf_data_file__is_read(file)) { 139 if (perf_session__open(session) < 0) 140 goto out_close; 141 142 perf_session__set_id_hdr_size(session); 143 perf_session__set_comm_exec(session); 144 } 145 } else { 146 session->machines.host.env = &perf_env; 147 } 148 149 if (!file || perf_data_file__is_write(file)) { 150 /* 151 * In O_RDONLY mode this will be performed when reading the 152 * kernel MMAP event, in perf_event__process_mmap(). 153 */ 154 if (perf_session__create_kernel_maps(session) < 0) 155 pr_warning("Cannot read kernel map\n"); 156 } 157 158 if (tool && tool->ordering_requires_timestamps && 159 tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) { 160 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); 161 tool->ordered_events = false; 162 } 163 164 return session; 165 166 out_close: 167 perf_data_file__close(file); 168 out_delete: 169 perf_session__delete(session); 170 out: 171 return NULL; 172 } 173 174 static void perf_session__delete_threads(struct perf_session *session) 175 { 176 machine__delete_threads(&session->machines.host); 177 } 178 179 void perf_session__delete(struct perf_session *session) 180 { 181 auxtrace__free(session); 182 auxtrace_index__free(&session->auxtrace_index); 183 perf_session__destroy_kernel_maps(session); 184 perf_session__delete_threads(session); 185 perf_env__exit(&session->header.env); 186 machines__exit(&session->machines); 187 if (session->file) 188 perf_data_file__close(session->file); 189 free(session); 190 } 191 192 static int process_event_synth_tracing_data_stub(struct perf_tool *tool 193 __maybe_unused, 194 union perf_event *event 195 __maybe_unused, 196 struct perf_session *session 197 __maybe_unused) 198 { 199 dump_printf(": unhandled!\n"); 200 return 0; 201 } 202 203 static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused, 204 union perf_event *event __maybe_unused, 205 struct perf_evlist **pevlist 206 __maybe_unused) 207 { 208 dump_printf(": unhandled!\n"); 209 return 0; 210 } 211 212 static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused, 213 union perf_event *event __maybe_unused, 214 struct perf_evlist **pevlist 215 __maybe_unused) 216 { 217 if (dump_trace) 218 perf_event__fprintf_event_update(event, stdout); 219 220 dump_printf(": unhandled!\n"); 221 return 0; 222 } 223 224 static int process_event_sample_stub(struct perf_tool *tool __maybe_unused, 225 union perf_event *event __maybe_unused, 226 struct perf_sample *sample __maybe_unused, 227 struct perf_evsel *evsel __maybe_unused, 228 struct machine *machine __maybe_unused) 229 { 230 dump_printf(": unhandled!\n"); 231 return 0; 232 } 233 234 static int process_event_stub(struct perf_tool *tool __maybe_unused, 235 union perf_event *event __maybe_unused, 236 struct perf_sample *sample __maybe_unused, 237 struct machine *machine __maybe_unused) 238 { 239 dump_printf(": unhandled!\n"); 240 return 0; 241 } 242 243 static int process_build_id_stub(struct perf_tool *tool __maybe_unused, 244 union perf_event *event __maybe_unused, 245 struct perf_session *session __maybe_unused) 246 { 247 dump_printf(": unhandled!\n"); 248 return 0; 249 } 250 251 static int process_finished_round_stub(struct perf_tool *tool __maybe_unused, 252 union perf_event *event __maybe_unused, 253 struct ordered_events *oe __maybe_unused) 254 { 255 dump_printf(": unhandled!\n"); 256 return 0; 257 } 258 259 static int process_finished_round(struct perf_tool *tool, 260 union perf_event *event, 261 struct ordered_events *oe); 262 263 static int process_id_index_stub(struct perf_tool *tool __maybe_unused, 264 union perf_event *event __maybe_unused, 265 struct perf_session *perf_session 266 __maybe_unused) 267 { 268 dump_printf(": unhandled!\n"); 269 return 0; 270 } 271 272 static int process_event_auxtrace_info_stub(struct perf_tool *tool __maybe_unused, 273 union perf_event *event __maybe_unused, 274 struct perf_session *session __maybe_unused) 275 { 276 dump_printf(": unhandled!\n"); 277 return 0; 278 } 279 280 static int skipn(int fd, off_t n) 281 { 282 char buf[4096]; 283 ssize_t ret; 284 285 while (n > 0) { 286 ret = read(fd, buf, min(n, (off_t)sizeof(buf))); 287 if (ret <= 0) 288 return ret; 289 n -= ret; 290 } 291 292 return 0; 293 } 294 295 static s64 process_event_auxtrace_stub(struct perf_tool *tool __maybe_unused, 296 union perf_event *event, 297 struct perf_session *session 298 __maybe_unused) 299 { 300 dump_printf(": unhandled!\n"); 301 if (perf_data_file__is_pipe(session->file)) 302 skipn(perf_data_file__fd(session->file), event->auxtrace.size); 303 return event->auxtrace.size; 304 } 305 306 static 307 int process_event_auxtrace_error_stub(struct perf_tool *tool __maybe_unused, 308 union perf_event *event __maybe_unused, 309 struct perf_session *session __maybe_unused) 310 { 311 dump_printf(": unhandled!\n"); 312 return 0; 313 } 314 315 316 static 317 int process_event_thread_map_stub(struct perf_tool *tool __maybe_unused, 318 union perf_event *event __maybe_unused, 319 struct perf_session *session __maybe_unused) 320 { 321 if (dump_trace) 322 perf_event__fprintf_thread_map(event, stdout); 323 324 dump_printf(": unhandled!\n"); 325 return 0; 326 } 327 328 static 329 int process_event_cpu_map_stub(struct perf_tool *tool __maybe_unused, 330 union perf_event *event __maybe_unused, 331 struct perf_session *session __maybe_unused) 332 { 333 if (dump_trace) 334 perf_event__fprintf_cpu_map(event, stdout); 335 336 dump_printf(": unhandled!\n"); 337 return 0; 338 } 339 340 static 341 int process_event_stat_config_stub(struct perf_tool *tool __maybe_unused, 342 union perf_event *event __maybe_unused, 343 struct perf_session *session __maybe_unused) 344 { 345 if (dump_trace) 346 perf_event__fprintf_stat_config(event, stdout); 347 348 dump_printf(": unhandled!\n"); 349 return 0; 350 } 351 352 static int process_stat_stub(struct perf_tool *tool __maybe_unused, 353 union perf_event *event __maybe_unused, 354 struct perf_session *perf_session 355 __maybe_unused) 356 { 357 if (dump_trace) 358 perf_event__fprintf_stat(event, stdout); 359 360 dump_printf(": unhandled!\n"); 361 return 0; 362 } 363 364 static int process_stat_round_stub(struct perf_tool *tool __maybe_unused, 365 union perf_event *event __maybe_unused, 366 struct perf_session *perf_session 367 __maybe_unused) 368 { 369 if (dump_trace) 370 perf_event__fprintf_stat_round(event, stdout); 371 372 dump_printf(": unhandled!\n"); 373 return 0; 374 } 375 376 void perf_tool__fill_defaults(struct perf_tool *tool) 377 { 378 if (tool->sample == NULL) 379 tool->sample = process_event_sample_stub; 380 if (tool->mmap == NULL) 381 tool->mmap = process_event_stub; 382 if (tool->mmap2 == NULL) 383 tool->mmap2 = process_event_stub; 384 if (tool->comm == NULL) 385 tool->comm = process_event_stub; 386 if (tool->fork == NULL) 387 tool->fork = process_event_stub; 388 if (tool->exit == NULL) 389 tool->exit = process_event_stub; 390 if (tool->lost == NULL) 391 tool->lost = perf_event__process_lost; 392 if (tool->lost_samples == NULL) 393 tool->lost_samples = perf_event__process_lost_samples; 394 if (tool->aux == NULL) 395 tool->aux = perf_event__process_aux; 396 if (tool->itrace_start == NULL) 397 tool->itrace_start = perf_event__process_itrace_start; 398 if (tool->context_switch == NULL) 399 tool->context_switch = perf_event__process_switch; 400 if (tool->read == NULL) 401 tool->read = process_event_sample_stub; 402 if (tool->throttle == NULL) 403 tool->throttle = process_event_stub; 404 if (tool->unthrottle == NULL) 405 tool->unthrottle = process_event_stub; 406 if (tool->attr == NULL) 407 tool->attr = process_event_synth_attr_stub; 408 if (tool->event_update == NULL) 409 tool->event_update = process_event_synth_event_update_stub; 410 if (tool->tracing_data == NULL) 411 tool->tracing_data = process_event_synth_tracing_data_stub; 412 if (tool->build_id == NULL) 413 tool->build_id = process_build_id_stub; 414 if (tool->finished_round == NULL) { 415 if (tool->ordered_events) 416 tool->finished_round = process_finished_round; 417 else 418 tool->finished_round = process_finished_round_stub; 419 } 420 if (tool->id_index == NULL) 421 tool->id_index = process_id_index_stub; 422 if (tool->auxtrace_info == NULL) 423 tool->auxtrace_info = process_event_auxtrace_info_stub; 424 if (tool->auxtrace == NULL) 425 tool->auxtrace = process_event_auxtrace_stub; 426 if (tool->auxtrace_error == NULL) 427 tool->auxtrace_error = process_event_auxtrace_error_stub; 428 if (tool->thread_map == NULL) 429 tool->thread_map = process_event_thread_map_stub; 430 if (tool->cpu_map == NULL) 431 tool->cpu_map = process_event_cpu_map_stub; 432 if (tool->stat_config == NULL) 433 tool->stat_config = process_event_stat_config_stub; 434 if (tool->stat == NULL) 435 tool->stat = process_stat_stub; 436 if (tool->stat_round == NULL) 437 tool->stat_round = process_stat_round_stub; 438 } 439 440 static void swap_sample_id_all(union perf_event *event, void *data) 441 { 442 void *end = (void *) event + event->header.size; 443 int size = end - data; 444 445 BUG_ON(size % sizeof(u64)); 446 mem_bswap_64(data, size); 447 } 448 449 static void perf_event__all64_swap(union perf_event *event, 450 bool sample_id_all __maybe_unused) 451 { 452 struct perf_event_header *hdr = &event->header; 453 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); 454 } 455 456 static void perf_event__comm_swap(union perf_event *event, bool sample_id_all) 457 { 458 event->comm.pid = bswap_32(event->comm.pid); 459 event->comm.tid = bswap_32(event->comm.tid); 460 461 if (sample_id_all) { 462 void *data = &event->comm.comm; 463 464 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 465 swap_sample_id_all(event, data); 466 } 467 } 468 469 static void perf_event__mmap_swap(union perf_event *event, 470 bool sample_id_all) 471 { 472 event->mmap.pid = bswap_32(event->mmap.pid); 473 event->mmap.tid = bswap_32(event->mmap.tid); 474 event->mmap.start = bswap_64(event->mmap.start); 475 event->mmap.len = bswap_64(event->mmap.len); 476 event->mmap.pgoff = bswap_64(event->mmap.pgoff); 477 478 if (sample_id_all) { 479 void *data = &event->mmap.filename; 480 481 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 482 swap_sample_id_all(event, data); 483 } 484 } 485 486 static void perf_event__mmap2_swap(union perf_event *event, 487 bool sample_id_all) 488 { 489 event->mmap2.pid = bswap_32(event->mmap2.pid); 490 event->mmap2.tid = bswap_32(event->mmap2.tid); 491 event->mmap2.start = bswap_64(event->mmap2.start); 492 event->mmap2.len = bswap_64(event->mmap2.len); 493 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff); 494 event->mmap2.maj = bswap_32(event->mmap2.maj); 495 event->mmap2.min = bswap_32(event->mmap2.min); 496 event->mmap2.ino = bswap_64(event->mmap2.ino); 497 498 if (sample_id_all) { 499 void *data = &event->mmap2.filename; 500 501 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 502 swap_sample_id_all(event, data); 503 } 504 } 505 static void perf_event__task_swap(union perf_event *event, bool sample_id_all) 506 { 507 event->fork.pid = bswap_32(event->fork.pid); 508 event->fork.tid = bswap_32(event->fork.tid); 509 event->fork.ppid = bswap_32(event->fork.ppid); 510 event->fork.ptid = bswap_32(event->fork.ptid); 511 event->fork.time = bswap_64(event->fork.time); 512 513 if (sample_id_all) 514 swap_sample_id_all(event, &event->fork + 1); 515 } 516 517 static void perf_event__read_swap(union perf_event *event, bool sample_id_all) 518 { 519 event->read.pid = bswap_32(event->read.pid); 520 event->read.tid = bswap_32(event->read.tid); 521 event->read.value = bswap_64(event->read.value); 522 event->read.time_enabled = bswap_64(event->read.time_enabled); 523 event->read.time_running = bswap_64(event->read.time_running); 524 event->read.id = bswap_64(event->read.id); 525 526 if (sample_id_all) 527 swap_sample_id_all(event, &event->read + 1); 528 } 529 530 static void perf_event__aux_swap(union perf_event *event, bool sample_id_all) 531 { 532 event->aux.aux_offset = bswap_64(event->aux.aux_offset); 533 event->aux.aux_size = bswap_64(event->aux.aux_size); 534 event->aux.flags = bswap_64(event->aux.flags); 535 536 if (sample_id_all) 537 swap_sample_id_all(event, &event->aux + 1); 538 } 539 540 static void perf_event__itrace_start_swap(union perf_event *event, 541 bool sample_id_all) 542 { 543 event->itrace_start.pid = bswap_32(event->itrace_start.pid); 544 event->itrace_start.tid = bswap_32(event->itrace_start.tid); 545 546 if (sample_id_all) 547 swap_sample_id_all(event, &event->itrace_start + 1); 548 } 549 550 static void perf_event__switch_swap(union perf_event *event, bool sample_id_all) 551 { 552 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) { 553 event->context_switch.next_prev_pid = 554 bswap_32(event->context_switch.next_prev_pid); 555 event->context_switch.next_prev_tid = 556 bswap_32(event->context_switch.next_prev_tid); 557 } 558 559 if (sample_id_all) 560 swap_sample_id_all(event, &event->context_switch + 1); 561 } 562 563 static void perf_event__throttle_swap(union perf_event *event, 564 bool sample_id_all) 565 { 566 event->throttle.time = bswap_64(event->throttle.time); 567 event->throttle.id = bswap_64(event->throttle.id); 568 event->throttle.stream_id = bswap_64(event->throttle.stream_id); 569 570 if (sample_id_all) 571 swap_sample_id_all(event, &event->throttle + 1); 572 } 573 574 static u8 revbyte(u8 b) 575 { 576 int rev = (b >> 4) | ((b & 0xf) << 4); 577 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2); 578 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1); 579 return (u8) rev; 580 } 581 582 /* 583 * XXX this is hack in attempt to carry flags bitfield 584 * throught endian village. ABI says: 585 * 586 * Bit-fields are allocated from right to left (least to most significant) 587 * on little-endian implementations and from left to right (most to least 588 * significant) on big-endian implementations. 589 * 590 * The above seems to be byte specific, so we need to reverse each 591 * byte of the bitfield. 'Internet' also says this might be implementation 592 * specific and we probably need proper fix and carry perf_event_attr 593 * bitfield flags in separate data file FEAT_ section. Thought this seems 594 * to work for now. 595 */ 596 static void swap_bitfield(u8 *p, unsigned len) 597 { 598 unsigned i; 599 600 for (i = 0; i < len; i++) { 601 *p = revbyte(*p); 602 p++; 603 } 604 } 605 606 /* exported for swapping attributes in file header */ 607 void perf_event__attr_swap(struct perf_event_attr *attr) 608 { 609 attr->type = bswap_32(attr->type); 610 attr->size = bswap_32(attr->size); 611 612 #define bswap_safe(f, n) \ 613 (attr->size > (offsetof(struct perf_event_attr, f) + \ 614 sizeof(attr->f) * (n))) 615 #define bswap_field(f, sz) \ 616 do { \ 617 if (bswap_safe(f, 0)) \ 618 attr->f = bswap_##sz(attr->f); \ 619 } while(0) 620 #define bswap_field_32(f) bswap_field(f, 32) 621 #define bswap_field_64(f) bswap_field(f, 64) 622 623 bswap_field_64(config); 624 bswap_field_64(sample_period); 625 bswap_field_64(sample_type); 626 bswap_field_64(read_format); 627 bswap_field_32(wakeup_events); 628 bswap_field_32(bp_type); 629 bswap_field_64(bp_addr); 630 bswap_field_64(bp_len); 631 bswap_field_64(branch_sample_type); 632 bswap_field_64(sample_regs_user); 633 bswap_field_32(sample_stack_user); 634 bswap_field_32(aux_watermark); 635 636 /* 637 * After read_format are bitfields. Check read_format because 638 * we are unable to use offsetof on bitfield. 639 */ 640 if (bswap_safe(read_format, 1)) 641 swap_bitfield((u8 *) (&attr->read_format + 1), 642 sizeof(u64)); 643 #undef bswap_field_64 644 #undef bswap_field_32 645 #undef bswap_field 646 #undef bswap_safe 647 } 648 649 static void perf_event__hdr_attr_swap(union perf_event *event, 650 bool sample_id_all __maybe_unused) 651 { 652 size_t size; 653 654 perf_event__attr_swap(&event->attr.attr); 655 656 size = event->header.size; 657 size -= (void *)&event->attr.id - (void *)event; 658 mem_bswap_64(event->attr.id, size); 659 } 660 661 static void perf_event__event_update_swap(union perf_event *event, 662 bool sample_id_all __maybe_unused) 663 { 664 event->event_update.type = bswap_64(event->event_update.type); 665 event->event_update.id = bswap_64(event->event_update.id); 666 } 667 668 static void perf_event__event_type_swap(union perf_event *event, 669 bool sample_id_all __maybe_unused) 670 { 671 event->event_type.event_type.event_id = 672 bswap_64(event->event_type.event_type.event_id); 673 } 674 675 static void perf_event__tracing_data_swap(union perf_event *event, 676 bool sample_id_all __maybe_unused) 677 { 678 event->tracing_data.size = bswap_32(event->tracing_data.size); 679 } 680 681 static void perf_event__auxtrace_info_swap(union perf_event *event, 682 bool sample_id_all __maybe_unused) 683 { 684 size_t size; 685 686 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type); 687 688 size = event->header.size; 689 size -= (void *)&event->auxtrace_info.priv - (void *)event; 690 mem_bswap_64(event->auxtrace_info.priv, size); 691 } 692 693 static void perf_event__auxtrace_swap(union perf_event *event, 694 bool sample_id_all __maybe_unused) 695 { 696 event->auxtrace.size = bswap_64(event->auxtrace.size); 697 event->auxtrace.offset = bswap_64(event->auxtrace.offset); 698 event->auxtrace.reference = bswap_64(event->auxtrace.reference); 699 event->auxtrace.idx = bswap_32(event->auxtrace.idx); 700 event->auxtrace.tid = bswap_32(event->auxtrace.tid); 701 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu); 702 } 703 704 static void perf_event__auxtrace_error_swap(union perf_event *event, 705 bool sample_id_all __maybe_unused) 706 { 707 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type); 708 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code); 709 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu); 710 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid); 711 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid); 712 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip); 713 } 714 715 static void perf_event__thread_map_swap(union perf_event *event, 716 bool sample_id_all __maybe_unused) 717 { 718 unsigned i; 719 720 event->thread_map.nr = bswap_64(event->thread_map.nr); 721 722 for (i = 0; i < event->thread_map.nr; i++) 723 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid); 724 } 725 726 static void perf_event__cpu_map_swap(union perf_event *event, 727 bool sample_id_all __maybe_unused) 728 { 729 struct cpu_map_data *data = &event->cpu_map.data; 730 struct cpu_map_entries *cpus; 731 struct cpu_map_mask *mask; 732 unsigned i; 733 734 data->type = bswap_64(data->type); 735 736 switch (data->type) { 737 case PERF_CPU_MAP__CPUS: 738 cpus = (struct cpu_map_entries *)data->data; 739 740 cpus->nr = bswap_16(cpus->nr); 741 742 for (i = 0; i < cpus->nr; i++) 743 cpus->cpu[i] = bswap_16(cpus->cpu[i]); 744 break; 745 case PERF_CPU_MAP__MASK: 746 mask = (struct cpu_map_mask *) data->data; 747 748 mask->nr = bswap_16(mask->nr); 749 mask->long_size = bswap_16(mask->long_size); 750 751 switch (mask->long_size) { 752 case 4: mem_bswap_32(&mask->mask, mask->nr); break; 753 case 8: mem_bswap_64(&mask->mask, mask->nr); break; 754 default: 755 pr_err("cpu_map swap: unsupported long size\n"); 756 } 757 default: 758 break; 759 } 760 } 761 762 static void perf_event__stat_config_swap(union perf_event *event, 763 bool sample_id_all __maybe_unused) 764 { 765 u64 size; 766 767 size = event->stat_config.nr * sizeof(event->stat_config.data[0]); 768 size += 1; /* nr item itself */ 769 mem_bswap_64(&event->stat_config.nr, size); 770 } 771 772 static void perf_event__stat_swap(union perf_event *event, 773 bool sample_id_all __maybe_unused) 774 { 775 event->stat.id = bswap_64(event->stat.id); 776 event->stat.thread = bswap_32(event->stat.thread); 777 event->stat.cpu = bswap_32(event->stat.cpu); 778 event->stat.val = bswap_64(event->stat.val); 779 event->stat.ena = bswap_64(event->stat.ena); 780 event->stat.run = bswap_64(event->stat.run); 781 } 782 783 static void perf_event__stat_round_swap(union perf_event *event, 784 bool sample_id_all __maybe_unused) 785 { 786 event->stat_round.type = bswap_64(event->stat_round.type); 787 event->stat_round.time = bswap_64(event->stat_round.time); 788 } 789 790 typedef void (*perf_event__swap_op)(union perf_event *event, 791 bool sample_id_all); 792 793 static perf_event__swap_op perf_event__swap_ops[] = { 794 [PERF_RECORD_MMAP] = perf_event__mmap_swap, 795 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap, 796 [PERF_RECORD_COMM] = perf_event__comm_swap, 797 [PERF_RECORD_FORK] = perf_event__task_swap, 798 [PERF_RECORD_EXIT] = perf_event__task_swap, 799 [PERF_RECORD_LOST] = perf_event__all64_swap, 800 [PERF_RECORD_READ] = perf_event__read_swap, 801 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap, 802 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap, 803 [PERF_RECORD_SAMPLE] = perf_event__all64_swap, 804 [PERF_RECORD_AUX] = perf_event__aux_swap, 805 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap, 806 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap, 807 [PERF_RECORD_SWITCH] = perf_event__switch_swap, 808 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap, 809 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, 810 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, 811 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, 812 [PERF_RECORD_HEADER_BUILD_ID] = NULL, 813 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap, 814 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap, 815 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap, 816 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap, 817 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap, 818 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap, 819 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap, 820 [PERF_RECORD_STAT] = perf_event__stat_swap, 821 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap, 822 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap, 823 [PERF_RECORD_HEADER_MAX] = NULL, 824 }; 825 826 /* 827 * When perf record finishes a pass on every buffers, it records this pseudo 828 * event. 829 * We record the max timestamp t found in the pass n. 830 * Assuming these timestamps are monotonic across cpus, we know that if 831 * a buffer still has events with timestamps below t, they will be all 832 * available and then read in the pass n + 1. 833 * Hence when we start to read the pass n + 2, we can safely flush every 834 * events with timestamps below t. 835 * 836 * ============ PASS n ================= 837 * CPU 0 | CPU 1 838 * | 839 * cnt1 timestamps | cnt2 timestamps 840 * 1 | 2 841 * 2 | 3 842 * - | 4 <--- max recorded 843 * 844 * ============ PASS n + 1 ============== 845 * CPU 0 | CPU 1 846 * | 847 * cnt1 timestamps | cnt2 timestamps 848 * 3 | 5 849 * 4 | 6 850 * 5 | 7 <---- max recorded 851 * 852 * Flush every events below timestamp 4 853 * 854 * ============ PASS n + 2 ============== 855 * CPU 0 | CPU 1 856 * | 857 * cnt1 timestamps | cnt2 timestamps 858 * 6 | 8 859 * 7 | 9 860 * - | 10 861 * 862 * Flush every events below timestamp 7 863 * etc... 864 */ 865 static int process_finished_round(struct perf_tool *tool __maybe_unused, 866 union perf_event *event __maybe_unused, 867 struct ordered_events *oe) 868 { 869 if (dump_trace) 870 fprintf(stdout, "\n"); 871 return ordered_events__flush(oe, OE_FLUSH__ROUND); 872 } 873 874 int perf_session__queue_event(struct perf_session *s, union perf_event *event, 875 struct perf_sample *sample, u64 file_offset) 876 { 877 return ordered_events__queue(&s->ordered_events, event, sample, file_offset); 878 } 879 880 static void callchain__lbr_callstack_printf(struct perf_sample *sample) 881 { 882 struct ip_callchain *callchain = sample->callchain; 883 struct branch_stack *lbr_stack = sample->branch_stack; 884 u64 kernel_callchain_nr = callchain->nr; 885 unsigned int i; 886 887 for (i = 0; i < kernel_callchain_nr; i++) { 888 if (callchain->ips[i] == PERF_CONTEXT_USER) 889 break; 890 } 891 892 if ((i != kernel_callchain_nr) && lbr_stack->nr) { 893 u64 total_nr; 894 /* 895 * LBR callstack can only get user call chain, 896 * i is kernel call chain number, 897 * 1 is PERF_CONTEXT_USER. 898 * 899 * The user call chain is stored in LBR registers. 900 * LBR are pair registers. The caller is stored 901 * in "from" register, while the callee is stored 902 * in "to" register. 903 * For example, there is a call stack 904 * "A"->"B"->"C"->"D". 905 * The LBR registers will recorde like 906 * "C"->"D", "B"->"C", "A"->"B". 907 * So only the first "to" register and all "from" 908 * registers are needed to construct the whole stack. 909 */ 910 total_nr = i + 1 + lbr_stack->nr + 1; 911 kernel_callchain_nr = i + 1; 912 913 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr); 914 915 for (i = 0; i < kernel_callchain_nr; i++) 916 printf("..... %2d: %016" PRIx64 "\n", 917 i, callchain->ips[i]); 918 919 printf("..... %2d: %016" PRIx64 "\n", 920 (int)(kernel_callchain_nr), lbr_stack->entries[0].to); 921 for (i = 0; i < lbr_stack->nr; i++) 922 printf("..... %2d: %016" PRIx64 "\n", 923 (int)(i + kernel_callchain_nr + 1), lbr_stack->entries[i].from); 924 } 925 } 926 927 static void callchain__printf(struct perf_evsel *evsel, 928 struct perf_sample *sample) 929 { 930 unsigned int i; 931 struct ip_callchain *callchain = sample->callchain; 932 933 if (has_branch_callstack(evsel)) 934 callchain__lbr_callstack_printf(sample); 935 936 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr); 937 938 for (i = 0; i < callchain->nr; i++) 939 printf("..... %2d: %016" PRIx64 "\n", 940 i, callchain->ips[i]); 941 } 942 943 static void branch_stack__printf(struct perf_sample *sample) 944 { 945 uint64_t i; 946 947 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr); 948 949 for (i = 0; i < sample->branch_stack->nr; i++) { 950 struct branch_entry *e = &sample->branch_stack->entries[i]; 951 952 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x\n", 953 i, e->from, e->to, 954 e->flags.cycles, 955 e->flags.mispred ? "M" : " ", 956 e->flags.predicted ? "P" : " ", 957 e->flags.abort ? "A" : " ", 958 e->flags.in_tx ? "T" : " ", 959 (unsigned)e->flags.reserved); 960 } 961 } 962 963 static void regs_dump__printf(u64 mask, u64 *regs) 964 { 965 unsigned rid, i = 0; 966 967 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) { 968 u64 val = regs[i++]; 969 970 printf(".... %-5s 0x%" PRIx64 "\n", 971 perf_reg_name(rid), val); 972 } 973 } 974 975 static const char *regs_abi[] = { 976 [PERF_SAMPLE_REGS_ABI_NONE] = "none", 977 [PERF_SAMPLE_REGS_ABI_32] = "32-bit", 978 [PERF_SAMPLE_REGS_ABI_64] = "64-bit", 979 }; 980 981 static inline const char *regs_dump_abi(struct regs_dump *d) 982 { 983 if (d->abi > PERF_SAMPLE_REGS_ABI_64) 984 return "unknown"; 985 986 return regs_abi[d->abi]; 987 } 988 989 static void regs__printf(const char *type, struct regs_dump *regs) 990 { 991 u64 mask = regs->mask; 992 993 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n", 994 type, 995 mask, 996 regs_dump_abi(regs)); 997 998 regs_dump__printf(mask, regs->regs); 999 } 1000 1001 static void regs_user__printf(struct perf_sample *sample) 1002 { 1003 struct regs_dump *user_regs = &sample->user_regs; 1004 1005 if (user_regs->regs) 1006 regs__printf("user", user_regs); 1007 } 1008 1009 static void regs_intr__printf(struct perf_sample *sample) 1010 { 1011 struct regs_dump *intr_regs = &sample->intr_regs; 1012 1013 if (intr_regs->regs) 1014 regs__printf("intr", intr_regs); 1015 } 1016 1017 static void stack_user__printf(struct stack_dump *dump) 1018 { 1019 printf("... ustack: size %" PRIu64 ", offset 0x%x\n", 1020 dump->size, dump->offset); 1021 } 1022 1023 static void perf_evlist__print_tstamp(struct perf_evlist *evlist, 1024 union perf_event *event, 1025 struct perf_sample *sample) 1026 { 1027 u64 sample_type = __perf_evlist__combined_sample_type(evlist); 1028 1029 if (event->header.type != PERF_RECORD_SAMPLE && 1030 !perf_evlist__sample_id_all(evlist)) { 1031 fputs("-1 -1 ", stdout); 1032 return; 1033 } 1034 1035 if ((sample_type & PERF_SAMPLE_CPU)) 1036 printf("%u ", sample->cpu); 1037 1038 if (sample_type & PERF_SAMPLE_TIME) 1039 printf("%" PRIu64 " ", sample->time); 1040 } 1041 1042 static void sample_read__printf(struct perf_sample *sample, u64 read_format) 1043 { 1044 printf("... sample_read:\n"); 1045 1046 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 1047 printf("...... time enabled %016" PRIx64 "\n", 1048 sample->read.time_enabled); 1049 1050 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 1051 printf("...... time running %016" PRIx64 "\n", 1052 sample->read.time_running); 1053 1054 if (read_format & PERF_FORMAT_GROUP) { 1055 u64 i; 1056 1057 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr); 1058 1059 for (i = 0; i < sample->read.group.nr; i++) { 1060 struct sample_read_value *value; 1061 1062 value = &sample->read.group.values[i]; 1063 printf("..... id %016" PRIx64 1064 ", value %016" PRIx64 "\n", 1065 value->id, value->value); 1066 } 1067 } else 1068 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n", 1069 sample->read.one.id, sample->read.one.value); 1070 } 1071 1072 static void dump_event(struct perf_evlist *evlist, union perf_event *event, 1073 u64 file_offset, struct perf_sample *sample) 1074 { 1075 if (!dump_trace) 1076 return; 1077 1078 printf("\n%#" PRIx64 " [%#x]: event: %d\n", 1079 file_offset, event->header.size, event->header.type); 1080 1081 trace_event(event); 1082 1083 if (sample) 1084 perf_evlist__print_tstamp(evlist, event, sample); 1085 1086 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, 1087 event->header.size, perf_event__name(event->header.type)); 1088 } 1089 1090 static void dump_sample(struct perf_evsel *evsel, union perf_event *event, 1091 struct perf_sample *sample) 1092 { 1093 u64 sample_type; 1094 1095 if (!dump_trace) 1096 return; 1097 1098 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", 1099 event->header.misc, sample->pid, sample->tid, sample->ip, 1100 sample->period, sample->addr); 1101 1102 sample_type = evsel->attr.sample_type; 1103 1104 if (sample_type & PERF_SAMPLE_CALLCHAIN) 1105 callchain__printf(evsel, sample); 1106 1107 if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !has_branch_callstack(evsel)) 1108 branch_stack__printf(sample); 1109 1110 if (sample_type & PERF_SAMPLE_REGS_USER) 1111 regs_user__printf(sample); 1112 1113 if (sample_type & PERF_SAMPLE_REGS_INTR) 1114 regs_intr__printf(sample); 1115 1116 if (sample_type & PERF_SAMPLE_STACK_USER) 1117 stack_user__printf(&sample->user_stack); 1118 1119 if (sample_type & PERF_SAMPLE_WEIGHT) 1120 printf("... weight: %" PRIu64 "\n", sample->weight); 1121 1122 if (sample_type & PERF_SAMPLE_DATA_SRC) 1123 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src); 1124 1125 if (sample_type & PERF_SAMPLE_TRANSACTION) 1126 printf("... transaction: %" PRIx64 "\n", sample->transaction); 1127 1128 if (sample_type & PERF_SAMPLE_READ) 1129 sample_read__printf(sample, evsel->attr.read_format); 1130 } 1131 1132 static struct machine *machines__find_for_cpumode(struct machines *machines, 1133 union perf_event *event, 1134 struct perf_sample *sample) 1135 { 1136 const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; 1137 struct machine *machine; 1138 1139 if (perf_guest && 1140 ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || 1141 (cpumode == PERF_RECORD_MISC_GUEST_USER))) { 1142 u32 pid; 1143 1144 if (event->header.type == PERF_RECORD_MMAP 1145 || event->header.type == PERF_RECORD_MMAP2) 1146 pid = event->mmap.pid; 1147 else 1148 pid = sample->pid; 1149 1150 machine = machines__find(machines, pid); 1151 if (!machine) 1152 machine = machines__findnew(machines, DEFAULT_GUEST_KERNEL_ID); 1153 return machine; 1154 } 1155 1156 return &machines->host; 1157 } 1158 1159 static int deliver_sample_value(struct perf_evlist *evlist, 1160 struct perf_tool *tool, 1161 union perf_event *event, 1162 struct perf_sample *sample, 1163 struct sample_read_value *v, 1164 struct machine *machine) 1165 { 1166 struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id); 1167 1168 if (sid) { 1169 sample->id = v->id; 1170 sample->period = v->value - sid->period; 1171 sid->period = v->value; 1172 } 1173 1174 if (!sid || sid->evsel == NULL) { 1175 ++evlist->stats.nr_unknown_id; 1176 return 0; 1177 } 1178 1179 return tool->sample(tool, event, sample, sid->evsel, machine); 1180 } 1181 1182 static int deliver_sample_group(struct perf_evlist *evlist, 1183 struct perf_tool *tool, 1184 union perf_event *event, 1185 struct perf_sample *sample, 1186 struct machine *machine) 1187 { 1188 int ret = -EINVAL; 1189 u64 i; 1190 1191 for (i = 0; i < sample->read.group.nr; i++) { 1192 ret = deliver_sample_value(evlist, tool, event, sample, 1193 &sample->read.group.values[i], 1194 machine); 1195 if (ret) 1196 break; 1197 } 1198 1199 return ret; 1200 } 1201 1202 static int 1203 perf_evlist__deliver_sample(struct perf_evlist *evlist, 1204 struct perf_tool *tool, 1205 union perf_event *event, 1206 struct perf_sample *sample, 1207 struct perf_evsel *evsel, 1208 struct machine *machine) 1209 { 1210 /* We know evsel != NULL. */ 1211 u64 sample_type = evsel->attr.sample_type; 1212 u64 read_format = evsel->attr.read_format; 1213 1214 /* Standard sample delievery. */ 1215 if (!(sample_type & PERF_SAMPLE_READ)) 1216 return tool->sample(tool, event, sample, evsel, machine); 1217 1218 /* For PERF_SAMPLE_READ we have either single or group mode. */ 1219 if (read_format & PERF_FORMAT_GROUP) 1220 return deliver_sample_group(evlist, tool, event, sample, 1221 machine); 1222 else 1223 return deliver_sample_value(evlist, tool, event, sample, 1224 &sample->read.one, machine); 1225 } 1226 1227 static int machines__deliver_event(struct machines *machines, 1228 struct perf_evlist *evlist, 1229 union perf_event *event, 1230 struct perf_sample *sample, 1231 struct perf_tool *tool, u64 file_offset) 1232 { 1233 struct perf_evsel *evsel; 1234 struct machine *machine; 1235 1236 dump_event(evlist, event, file_offset, sample); 1237 1238 evsel = perf_evlist__id2evsel(evlist, sample->id); 1239 1240 machine = machines__find_for_cpumode(machines, event, sample); 1241 1242 switch (event->header.type) { 1243 case PERF_RECORD_SAMPLE: 1244 if (evsel == NULL) { 1245 ++evlist->stats.nr_unknown_id; 1246 return 0; 1247 } 1248 dump_sample(evsel, event, sample); 1249 if (machine == NULL) { 1250 ++evlist->stats.nr_unprocessable_samples; 1251 return 0; 1252 } 1253 return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine); 1254 case PERF_RECORD_MMAP: 1255 return tool->mmap(tool, event, sample, machine); 1256 case PERF_RECORD_MMAP2: 1257 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT) 1258 ++evlist->stats.nr_proc_map_timeout; 1259 return tool->mmap2(tool, event, sample, machine); 1260 case PERF_RECORD_COMM: 1261 return tool->comm(tool, event, sample, machine); 1262 case PERF_RECORD_FORK: 1263 return tool->fork(tool, event, sample, machine); 1264 case PERF_RECORD_EXIT: 1265 return tool->exit(tool, event, sample, machine); 1266 case PERF_RECORD_LOST: 1267 if (tool->lost == perf_event__process_lost) 1268 evlist->stats.total_lost += event->lost.lost; 1269 return tool->lost(tool, event, sample, machine); 1270 case PERF_RECORD_LOST_SAMPLES: 1271 if (tool->lost_samples == perf_event__process_lost_samples) 1272 evlist->stats.total_lost_samples += event->lost_samples.lost; 1273 return tool->lost_samples(tool, event, sample, machine); 1274 case PERF_RECORD_READ: 1275 return tool->read(tool, event, sample, evsel, machine); 1276 case PERF_RECORD_THROTTLE: 1277 return tool->throttle(tool, event, sample, machine); 1278 case PERF_RECORD_UNTHROTTLE: 1279 return tool->unthrottle(tool, event, sample, machine); 1280 case PERF_RECORD_AUX: 1281 if (tool->aux == perf_event__process_aux && 1282 (event->aux.flags & PERF_AUX_FLAG_TRUNCATED)) 1283 evlist->stats.total_aux_lost += 1; 1284 return tool->aux(tool, event, sample, machine); 1285 case PERF_RECORD_ITRACE_START: 1286 return tool->itrace_start(tool, event, sample, machine); 1287 case PERF_RECORD_SWITCH: 1288 case PERF_RECORD_SWITCH_CPU_WIDE: 1289 return tool->context_switch(tool, event, sample, machine); 1290 default: 1291 ++evlist->stats.nr_unknown_events; 1292 return -1; 1293 } 1294 } 1295 1296 static int perf_session__deliver_event(struct perf_session *session, 1297 union perf_event *event, 1298 struct perf_sample *sample, 1299 struct perf_tool *tool, 1300 u64 file_offset) 1301 { 1302 int ret; 1303 1304 ret = auxtrace__process_event(session, event, sample, tool); 1305 if (ret < 0) 1306 return ret; 1307 if (ret > 0) 1308 return 0; 1309 1310 return machines__deliver_event(&session->machines, session->evlist, 1311 event, sample, tool, file_offset); 1312 } 1313 1314 static s64 perf_session__process_user_event(struct perf_session *session, 1315 union perf_event *event, 1316 u64 file_offset) 1317 { 1318 struct ordered_events *oe = &session->ordered_events; 1319 struct perf_tool *tool = session->tool; 1320 int fd = perf_data_file__fd(session->file); 1321 int err; 1322 1323 dump_event(session->evlist, event, file_offset, NULL); 1324 1325 /* These events are processed right away */ 1326 switch (event->header.type) { 1327 case PERF_RECORD_HEADER_ATTR: 1328 err = tool->attr(tool, event, &session->evlist); 1329 if (err == 0) { 1330 perf_session__set_id_hdr_size(session); 1331 perf_session__set_comm_exec(session); 1332 } 1333 return err; 1334 case PERF_RECORD_EVENT_UPDATE: 1335 return tool->event_update(tool, event, &session->evlist); 1336 case PERF_RECORD_HEADER_EVENT_TYPE: 1337 /* 1338 * Depreceated, but we need to handle it for sake 1339 * of old data files create in pipe mode. 1340 */ 1341 return 0; 1342 case PERF_RECORD_HEADER_TRACING_DATA: 1343 /* setup for reading amidst mmap */ 1344 lseek(fd, file_offset, SEEK_SET); 1345 return tool->tracing_data(tool, event, session); 1346 case PERF_RECORD_HEADER_BUILD_ID: 1347 return tool->build_id(tool, event, session); 1348 case PERF_RECORD_FINISHED_ROUND: 1349 return tool->finished_round(tool, event, oe); 1350 case PERF_RECORD_ID_INDEX: 1351 return tool->id_index(tool, event, session); 1352 case PERF_RECORD_AUXTRACE_INFO: 1353 return tool->auxtrace_info(tool, event, session); 1354 case PERF_RECORD_AUXTRACE: 1355 /* setup for reading amidst mmap */ 1356 lseek(fd, file_offset + event->header.size, SEEK_SET); 1357 return tool->auxtrace(tool, event, session); 1358 case PERF_RECORD_AUXTRACE_ERROR: 1359 perf_session__auxtrace_error_inc(session, event); 1360 return tool->auxtrace_error(tool, event, session); 1361 case PERF_RECORD_THREAD_MAP: 1362 return tool->thread_map(tool, event, session); 1363 case PERF_RECORD_CPU_MAP: 1364 return tool->cpu_map(tool, event, session); 1365 case PERF_RECORD_STAT_CONFIG: 1366 return tool->stat_config(tool, event, session); 1367 case PERF_RECORD_STAT: 1368 return tool->stat(tool, event, session); 1369 case PERF_RECORD_STAT_ROUND: 1370 return tool->stat_round(tool, event, session); 1371 default: 1372 return -EINVAL; 1373 } 1374 } 1375 1376 int perf_session__deliver_synth_event(struct perf_session *session, 1377 union perf_event *event, 1378 struct perf_sample *sample) 1379 { 1380 struct perf_evlist *evlist = session->evlist; 1381 struct perf_tool *tool = session->tool; 1382 1383 events_stats__inc(&evlist->stats, event->header.type); 1384 1385 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1386 return perf_session__process_user_event(session, event, 0); 1387 1388 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0); 1389 } 1390 1391 static void event_swap(union perf_event *event, bool sample_id_all) 1392 { 1393 perf_event__swap_op swap; 1394 1395 swap = perf_event__swap_ops[event->header.type]; 1396 if (swap) 1397 swap(event, sample_id_all); 1398 } 1399 1400 int perf_session__peek_event(struct perf_session *session, off_t file_offset, 1401 void *buf, size_t buf_sz, 1402 union perf_event **event_ptr, 1403 struct perf_sample *sample) 1404 { 1405 union perf_event *event; 1406 size_t hdr_sz, rest; 1407 int fd; 1408 1409 if (session->one_mmap && !session->header.needs_swap) { 1410 event = file_offset - session->one_mmap_offset + 1411 session->one_mmap_addr; 1412 goto out_parse_sample; 1413 } 1414 1415 if (perf_data_file__is_pipe(session->file)) 1416 return -1; 1417 1418 fd = perf_data_file__fd(session->file); 1419 hdr_sz = sizeof(struct perf_event_header); 1420 1421 if (buf_sz < hdr_sz) 1422 return -1; 1423 1424 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 || 1425 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz) 1426 return -1; 1427 1428 event = (union perf_event *)buf; 1429 1430 if (session->header.needs_swap) 1431 perf_event_header__bswap(&event->header); 1432 1433 if (event->header.size < hdr_sz || event->header.size > buf_sz) 1434 return -1; 1435 1436 rest = event->header.size - hdr_sz; 1437 1438 if (readn(fd, buf, rest) != (ssize_t)rest) 1439 return -1; 1440 1441 if (session->header.needs_swap) 1442 event_swap(event, perf_evlist__sample_id_all(session->evlist)); 1443 1444 out_parse_sample: 1445 1446 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START && 1447 perf_evlist__parse_sample(session->evlist, event, sample)) 1448 return -1; 1449 1450 *event_ptr = event; 1451 1452 return 0; 1453 } 1454 1455 static s64 perf_session__process_event(struct perf_session *session, 1456 union perf_event *event, u64 file_offset) 1457 { 1458 struct perf_evlist *evlist = session->evlist; 1459 struct perf_tool *tool = session->tool; 1460 struct perf_sample sample; 1461 int ret; 1462 1463 if (session->header.needs_swap) 1464 event_swap(event, perf_evlist__sample_id_all(evlist)); 1465 1466 if (event->header.type >= PERF_RECORD_HEADER_MAX) 1467 return -EINVAL; 1468 1469 events_stats__inc(&evlist->stats, event->header.type); 1470 1471 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1472 return perf_session__process_user_event(session, event, file_offset); 1473 1474 /* 1475 * For all kernel events we get the sample data 1476 */ 1477 ret = perf_evlist__parse_sample(evlist, event, &sample); 1478 if (ret) 1479 return ret; 1480 1481 if (tool->ordered_events) { 1482 ret = perf_session__queue_event(session, event, &sample, file_offset); 1483 if (ret != -ETIME) 1484 return ret; 1485 } 1486 1487 return perf_session__deliver_event(session, event, &sample, tool, 1488 file_offset); 1489 } 1490 1491 void perf_event_header__bswap(struct perf_event_header *hdr) 1492 { 1493 hdr->type = bswap_32(hdr->type); 1494 hdr->misc = bswap_16(hdr->misc); 1495 hdr->size = bswap_16(hdr->size); 1496 } 1497 1498 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) 1499 { 1500 return machine__findnew_thread(&session->machines.host, -1, pid); 1501 } 1502 1503 int perf_session__register_idle_thread(struct perf_session *session) 1504 { 1505 struct thread *thread; 1506 int err = 0; 1507 1508 thread = machine__findnew_thread(&session->machines.host, 0, 0); 1509 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) { 1510 pr_err("problem inserting idle task.\n"); 1511 err = -1; 1512 } 1513 1514 /* machine__findnew_thread() got the thread, so put it */ 1515 thread__put(thread); 1516 return err; 1517 } 1518 1519 static void perf_session__warn_about_errors(const struct perf_session *session) 1520 { 1521 const struct events_stats *stats = &session->evlist->stats; 1522 const struct ordered_events *oe = &session->ordered_events; 1523 1524 if (session->tool->lost == perf_event__process_lost && 1525 stats->nr_events[PERF_RECORD_LOST] != 0) { 1526 ui__warning("Processed %d events and lost %d chunks!\n\n" 1527 "Check IO/CPU overload!\n\n", 1528 stats->nr_events[0], 1529 stats->nr_events[PERF_RECORD_LOST]); 1530 } 1531 1532 if (session->tool->lost_samples == perf_event__process_lost_samples) { 1533 double drop_rate; 1534 1535 drop_rate = (double)stats->total_lost_samples / 1536 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples); 1537 if (drop_rate > 0.05) { 1538 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%% samples!\n\n", 1539 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples, 1540 drop_rate * 100.0); 1541 } 1542 } 1543 1544 if (session->tool->aux == perf_event__process_aux && 1545 stats->total_aux_lost != 0) { 1546 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n", 1547 stats->total_aux_lost, 1548 stats->nr_events[PERF_RECORD_AUX]); 1549 } 1550 1551 if (stats->nr_unknown_events != 0) { 1552 ui__warning("Found %u unknown events!\n\n" 1553 "Is this an older tool processing a perf.data " 1554 "file generated by a more recent tool?\n\n" 1555 "If that is not the case, consider " 1556 "reporting to linux-kernel@vger.kernel.org.\n\n", 1557 stats->nr_unknown_events); 1558 } 1559 1560 if (stats->nr_unknown_id != 0) { 1561 ui__warning("%u samples with id not present in the header\n", 1562 stats->nr_unknown_id); 1563 } 1564 1565 if (stats->nr_invalid_chains != 0) { 1566 ui__warning("Found invalid callchains!\n\n" 1567 "%u out of %u events were discarded for this reason.\n\n" 1568 "Consider reporting to linux-kernel@vger.kernel.org.\n\n", 1569 stats->nr_invalid_chains, 1570 stats->nr_events[PERF_RECORD_SAMPLE]); 1571 } 1572 1573 if (stats->nr_unprocessable_samples != 0) { 1574 ui__warning("%u unprocessable samples recorded.\n" 1575 "Do you have a KVM guest running and not using 'perf kvm'?\n", 1576 stats->nr_unprocessable_samples); 1577 } 1578 1579 if (oe->nr_unordered_events != 0) 1580 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events); 1581 1582 events_stats__auxtrace_error_warn(stats); 1583 1584 if (stats->nr_proc_map_timeout != 0) { 1585 ui__warning("%d map information files for pre-existing threads were\n" 1586 "not processed, if there are samples for addresses they\n" 1587 "will not be resolved, you may find out which are these\n" 1588 "threads by running with -v and redirecting the output\n" 1589 "to a file.\n" 1590 "The time limit to process proc map is too short?\n" 1591 "Increase it by --proc-map-timeout\n", 1592 stats->nr_proc_map_timeout); 1593 } 1594 } 1595 1596 static int perf_session__flush_thread_stack(struct thread *thread, 1597 void *p __maybe_unused) 1598 { 1599 return thread_stack__flush(thread); 1600 } 1601 1602 static int perf_session__flush_thread_stacks(struct perf_session *session) 1603 { 1604 return machines__for_each_thread(&session->machines, 1605 perf_session__flush_thread_stack, 1606 NULL); 1607 } 1608 1609 volatile int session_done; 1610 1611 static int __perf_session__process_pipe_events(struct perf_session *session) 1612 { 1613 struct ordered_events *oe = &session->ordered_events; 1614 struct perf_tool *tool = session->tool; 1615 int fd = perf_data_file__fd(session->file); 1616 union perf_event *event; 1617 uint32_t size, cur_size = 0; 1618 void *buf = NULL; 1619 s64 skip = 0; 1620 u64 head; 1621 ssize_t err; 1622 void *p; 1623 1624 perf_tool__fill_defaults(tool); 1625 1626 head = 0; 1627 cur_size = sizeof(union perf_event); 1628 1629 buf = malloc(cur_size); 1630 if (!buf) 1631 return -errno; 1632 more: 1633 event = buf; 1634 err = readn(fd, event, sizeof(struct perf_event_header)); 1635 if (err <= 0) { 1636 if (err == 0) 1637 goto done; 1638 1639 pr_err("failed to read event header\n"); 1640 goto out_err; 1641 } 1642 1643 if (session->header.needs_swap) 1644 perf_event_header__bswap(&event->header); 1645 1646 size = event->header.size; 1647 if (size < sizeof(struct perf_event_header)) { 1648 pr_err("bad event header size\n"); 1649 goto out_err; 1650 } 1651 1652 if (size > cur_size) { 1653 void *new = realloc(buf, size); 1654 if (!new) { 1655 pr_err("failed to allocate memory to read event\n"); 1656 goto out_err; 1657 } 1658 buf = new; 1659 cur_size = size; 1660 event = buf; 1661 } 1662 p = event; 1663 p += sizeof(struct perf_event_header); 1664 1665 if (size - sizeof(struct perf_event_header)) { 1666 err = readn(fd, p, size - sizeof(struct perf_event_header)); 1667 if (err <= 0) { 1668 if (err == 0) { 1669 pr_err("unexpected end of event stream\n"); 1670 goto done; 1671 } 1672 1673 pr_err("failed to read event data\n"); 1674 goto out_err; 1675 } 1676 } 1677 1678 if ((skip = perf_session__process_event(session, event, head)) < 0) { 1679 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1680 head, event->header.size, event->header.type); 1681 err = -EINVAL; 1682 goto out_err; 1683 } 1684 1685 head += size; 1686 1687 if (skip > 0) 1688 head += skip; 1689 1690 if (!session_done()) 1691 goto more; 1692 done: 1693 /* do the final flush for ordered samples */ 1694 err = ordered_events__flush(oe, OE_FLUSH__FINAL); 1695 if (err) 1696 goto out_err; 1697 err = auxtrace__flush_events(session, tool); 1698 if (err) 1699 goto out_err; 1700 err = perf_session__flush_thread_stacks(session); 1701 out_err: 1702 free(buf); 1703 perf_session__warn_about_errors(session); 1704 ordered_events__free(&session->ordered_events); 1705 auxtrace__free_events(session); 1706 return err; 1707 } 1708 1709 static union perf_event * 1710 fetch_mmaped_event(struct perf_session *session, 1711 u64 head, size_t mmap_size, char *buf) 1712 { 1713 union perf_event *event; 1714 1715 /* 1716 * Ensure we have enough space remaining to read 1717 * the size of the event in the headers. 1718 */ 1719 if (head + sizeof(event->header) > mmap_size) 1720 return NULL; 1721 1722 event = (union perf_event *)(buf + head); 1723 1724 if (session->header.needs_swap) 1725 perf_event_header__bswap(&event->header); 1726 1727 if (head + event->header.size > mmap_size) { 1728 /* We're not fetching the event so swap back again */ 1729 if (session->header.needs_swap) 1730 perf_event_header__bswap(&event->header); 1731 return NULL; 1732 } 1733 1734 return event; 1735 } 1736 1737 /* 1738 * On 64bit we can mmap the data file in one go. No need for tiny mmap 1739 * slices. On 32bit we use 32MB. 1740 */ 1741 #if BITS_PER_LONG == 64 1742 #define MMAP_SIZE ULLONG_MAX 1743 #define NUM_MMAPS 1 1744 #else 1745 #define MMAP_SIZE (32 * 1024 * 1024ULL) 1746 #define NUM_MMAPS 128 1747 #endif 1748 1749 static int __perf_session__process_events(struct perf_session *session, 1750 u64 data_offset, u64 data_size, 1751 u64 file_size) 1752 { 1753 struct ordered_events *oe = &session->ordered_events; 1754 struct perf_tool *tool = session->tool; 1755 int fd = perf_data_file__fd(session->file); 1756 u64 head, page_offset, file_offset, file_pos, size; 1757 int err, mmap_prot, mmap_flags, map_idx = 0; 1758 size_t mmap_size; 1759 char *buf, *mmaps[NUM_MMAPS]; 1760 union perf_event *event; 1761 struct ui_progress prog; 1762 s64 skip; 1763 1764 perf_tool__fill_defaults(tool); 1765 1766 page_offset = page_size * (data_offset / page_size); 1767 file_offset = page_offset; 1768 head = data_offset - page_offset; 1769 1770 if (data_size == 0) 1771 goto out; 1772 1773 if (data_offset + data_size < file_size) 1774 file_size = data_offset + data_size; 1775 1776 ui_progress__init(&prog, file_size, "Processing events..."); 1777 1778 mmap_size = MMAP_SIZE; 1779 if (mmap_size > file_size) { 1780 mmap_size = file_size; 1781 session->one_mmap = true; 1782 } 1783 1784 memset(mmaps, 0, sizeof(mmaps)); 1785 1786 mmap_prot = PROT_READ; 1787 mmap_flags = MAP_SHARED; 1788 1789 if (session->header.needs_swap) { 1790 mmap_prot |= PROT_WRITE; 1791 mmap_flags = MAP_PRIVATE; 1792 } 1793 remap: 1794 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd, 1795 file_offset); 1796 if (buf == MAP_FAILED) { 1797 pr_err("failed to mmap file\n"); 1798 err = -errno; 1799 goto out_err; 1800 } 1801 mmaps[map_idx] = buf; 1802 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); 1803 file_pos = file_offset + head; 1804 if (session->one_mmap) { 1805 session->one_mmap_addr = buf; 1806 session->one_mmap_offset = file_offset; 1807 } 1808 1809 more: 1810 event = fetch_mmaped_event(session, head, mmap_size, buf); 1811 if (!event) { 1812 if (mmaps[map_idx]) { 1813 munmap(mmaps[map_idx], mmap_size); 1814 mmaps[map_idx] = NULL; 1815 } 1816 1817 page_offset = page_size * (head / page_size); 1818 file_offset += page_offset; 1819 head -= page_offset; 1820 goto remap; 1821 } 1822 1823 size = event->header.size; 1824 1825 if (size < sizeof(struct perf_event_header) || 1826 (skip = perf_session__process_event(session, event, file_pos)) < 0) { 1827 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1828 file_offset + head, event->header.size, 1829 event->header.type); 1830 err = -EINVAL; 1831 goto out_err; 1832 } 1833 1834 if (skip) 1835 size += skip; 1836 1837 head += size; 1838 file_pos += size; 1839 1840 ui_progress__update(&prog, size); 1841 1842 if (session_done()) 1843 goto out; 1844 1845 if (file_pos < file_size) 1846 goto more; 1847 1848 out: 1849 /* do the final flush for ordered samples */ 1850 err = ordered_events__flush(oe, OE_FLUSH__FINAL); 1851 if (err) 1852 goto out_err; 1853 err = auxtrace__flush_events(session, tool); 1854 if (err) 1855 goto out_err; 1856 err = perf_session__flush_thread_stacks(session); 1857 out_err: 1858 ui_progress__finish(); 1859 perf_session__warn_about_errors(session); 1860 ordered_events__free(&session->ordered_events); 1861 auxtrace__free_events(session); 1862 session->one_mmap = false; 1863 return err; 1864 } 1865 1866 int perf_session__process_events(struct perf_session *session) 1867 { 1868 u64 size = perf_data_file__size(session->file); 1869 int err; 1870 1871 if (perf_session__register_idle_thread(session) < 0) 1872 return -ENOMEM; 1873 1874 if (!perf_data_file__is_pipe(session->file)) 1875 err = __perf_session__process_events(session, 1876 session->header.data_offset, 1877 session->header.data_size, size); 1878 else 1879 err = __perf_session__process_pipe_events(session); 1880 1881 return err; 1882 } 1883 1884 bool perf_session__has_traces(struct perf_session *session, const char *msg) 1885 { 1886 struct perf_evsel *evsel; 1887 1888 evlist__for_each(session->evlist, evsel) { 1889 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) 1890 return true; 1891 } 1892 1893 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); 1894 return false; 1895 } 1896 1897 int maps__set_kallsyms_ref_reloc_sym(struct map **maps, 1898 const char *symbol_name, u64 addr) 1899 { 1900 char *bracket; 1901 enum map_type i; 1902 struct ref_reloc_sym *ref; 1903 1904 ref = zalloc(sizeof(struct ref_reloc_sym)); 1905 if (ref == NULL) 1906 return -ENOMEM; 1907 1908 ref->name = strdup(symbol_name); 1909 if (ref->name == NULL) { 1910 free(ref); 1911 return -ENOMEM; 1912 } 1913 1914 bracket = strchr(ref->name, ']'); 1915 if (bracket) 1916 *bracket = '\0'; 1917 1918 ref->addr = addr; 1919 1920 for (i = 0; i < MAP__NR_TYPES; ++i) { 1921 struct kmap *kmap = map__kmap(maps[i]); 1922 1923 if (!kmap) 1924 continue; 1925 kmap->ref_reloc_sym = ref; 1926 } 1927 1928 return 0; 1929 } 1930 1931 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp) 1932 { 1933 return machines__fprintf_dsos(&session->machines, fp); 1934 } 1935 1936 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp, 1937 bool (skip)(struct dso *dso, int parm), int parm) 1938 { 1939 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm); 1940 } 1941 1942 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) 1943 { 1944 size_t ret; 1945 const char *msg = ""; 1946 1947 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE)) 1948 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)"; 1949 1950 ret = fprintf(fp, "\nAggregated stats:%s\n", msg); 1951 1952 ret += events_stats__fprintf(&session->evlist->stats, fp); 1953 return ret; 1954 } 1955 1956 size_t perf_session__fprintf(struct perf_session *session, FILE *fp) 1957 { 1958 /* 1959 * FIXME: Here we have to actually print all the machines in this 1960 * session, not just the host... 1961 */ 1962 return machine__fprintf(&session->machines.host, fp); 1963 } 1964 1965 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, 1966 unsigned int type) 1967 { 1968 struct perf_evsel *pos; 1969 1970 evlist__for_each(session->evlist, pos) { 1971 if (pos->attr.type == type) 1972 return pos; 1973 } 1974 return NULL; 1975 } 1976 1977 void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample, 1978 struct addr_location *al, 1979 unsigned int print_opts, unsigned int stack_depth) 1980 { 1981 struct callchain_cursor_node *node; 1982 int print_ip = print_opts & PRINT_IP_OPT_IP; 1983 int print_sym = print_opts & PRINT_IP_OPT_SYM; 1984 int print_dso = print_opts & PRINT_IP_OPT_DSO; 1985 int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET; 1986 int print_oneline = print_opts & PRINT_IP_OPT_ONELINE; 1987 int print_srcline = print_opts & PRINT_IP_OPT_SRCLINE; 1988 char s = print_oneline ? ' ' : '\t'; 1989 1990 if (symbol_conf.use_callchain && sample->callchain) { 1991 struct addr_location node_al; 1992 1993 if (thread__resolve_callchain(al->thread, evsel, 1994 sample, NULL, NULL, 1995 stack_depth) != 0) { 1996 if (verbose) 1997 error("Failed to resolve callchain. Skipping\n"); 1998 return; 1999 } 2000 callchain_cursor_commit(&callchain_cursor); 2001 2002 if (print_symoffset) 2003 node_al = *al; 2004 2005 while (stack_depth) { 2006 u64 addr = 0; 2007 2008 node = callchain_cursor_current(&callchain_cursor); 2009 if (!node) 2010 break; 2011 2012 if (node->sym && node->sym->ignore) 2013 goto next; 2014 2015 if (print_ip) 2016 printf("%c%16" PRIx64, s, node->ip); 2017 2018 if (node->map) 2019 addr = node->map->map_ip(node->map, node->ip); 2020 2021 if (print_sym) { 2022 printf(" "); 2023 if (print_symoffset) { 2024 node_al.addr = addr; 2025 node_al.map = node->map; 2026 symbol__fprintf_symname_offs(node->sym, &node_al, stdout); 2027 } else 2028 symbol__fprintf_symname(node->sym, stdout); 2029 } 2030 2031 if (print_dso) { 2032 printf(" ("); 2033 map__fprintf_dsoname(node->map, stdout); 2034 printf(")"); 2035 } 2036 2037 if (print_srcline) 2038 map__fprintf_srcline(node->map, addr, "\n ", 2039 stdout); 2040 2041 if (!print_oneline) 2042 printf("\n"); 2043 2044 stack_depth--; 2045 next: 2046 callchain_cursor_advance(&callchain_cursor); 2047 } 2048 2049 } else { 2050 if (al->sym && al->sym->ignore) 2051 return; 2052 2053 if (print_ip) 2054 printf("%16" PRIx64, sample->ip); 2055 2056 if (print_sym) { 2057 printf(" "); 2058 if (print_symoffset) 2059 symbol__fprintf_symname_offs(al->sym, al, 2060 stdout); 2061 else 2062 symbol__fprintf_symname(al->sym, stdout); 2063 } 2064 2065 if (print_dso) { 2066 printf(" ("); 2067 map__fprintf_dsoname(al->map, stdout); 2068 printf(")"); 2069 } 2070 2071 if (print_srcline) 2072 map__fprintf_srcline(al->map, al->addr, "\n ", stdout); 2073 } 2074 } 2075 2076 int perf_session__cpu_bitmap(struct perf_session *session, 2077 const char *cpu_list, unsigned long *cpu_bitmap) 2078 { 2079 int i, err = -1; 2080 struct cpu_map *map; 2081 2082 for (i = 0; i < PERF_TYPE_MAX; ++i) { 2083 struct perf_evsel *evsel; 2084 2085 evsel = perf_session__find_first_evtype(session, i); 2086 if (!evsel) 2087 continue; 2088 2089 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { 2090 pr_err("File does not contain CPU events. " 2091 "Remove -c option to proceed.\n"); 2092 return -1; 2093 } 2094 } 2095 2096 map = cpu_map__new(cpu_list); 2097 if (map == NULL) { 2098 pr_err("Invalid cpu_list\n"); 2099 return -1; 2100 } 2101 2102 for (i = 0; i < map->nr; i++) { 2103 int cpu = map->map[i]; 2104 2105 if (cpu >= MAX_NR_CPUS) { 2106 pr_err("Requested CPU %d too large. " 2107 "Consider raising MAX_NR_CPUS\n", cpu); 2108 goto out_delete_map; 2109 } 2110 2111 set_bit(cpu, cpu_bitmap); 2112 } 2113 2114 err = 0; 2115 2116 out_delete_map: 2117 cpu_map__put(map); 2118 return err; 2119 } 2120 2121 void perf_session__fprintf_info(struct perf_session *session, FILE *fp, 2122 bool full) 2123 { 2124 struct stat st; 2125 int fd, ret; 2126 2127 if (session == NULL || fp == NULL) 2128 return; 2129 2130 fd = perf_data_file__fd(session->file); 2131 2132 ret = fstat(fd, &st); 2133 if (ret == -1) 2134 return; 2135 2136 fprintf(fp, "# ========\n"); 2137 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); 2138 perf_header__fprintf_info(session, fp, full); 2139 fprintf(fp, "# ========\n#\n"); 2140 } 2141 2142 2143 int __perf_session__set_tracepoints_handlers(struct perf_session *session, 2144 const struct perf_evsel_str_handler *assocs, 2145 size_t nr_assocs) 2146 { 2147 struct perf_evsel *evsel; 2148 size_t i; 2149 int err; 2150 2151 for (i = 0; i < nr_assocs; i++) { 2152 /* 2153 * Adding a handler for an event not in the session, 2154 * just ignore it. 2155 */ 2156 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name); 2157 if (evsel == NULL) 2158 continue; 2159 2160 err = -EEXIST; 2161 if (evsel->handler != NULL) 2162 goto out; 2163 evsel->handler = assocs[i].handler; 2164 } 2165 2166 err = 0; 2167 out: 2168 return err; 2169 } 2170 2171 int perf_event__process_id_index(struct perf_tool *tool __maybe_unused, 2172 union perf_event *event, 2173 struct perf_session *session) 2174 { 2175 struct perf_evlist *evlist = session->evlist; 2176 struct id_index_event *ie = &event->id_index; 2177 size_t i, nr, max_nr; 2178 2179 max_nr = (ie->header.size - sizeof(struct id_index_event)) / 2180 sizeof(struct id_index_entry); 2181 nr = ie->nr; 2182 if (nr > max_nr) 2183 return -EINVAL; 2184 2185 if (dump_trace) 2186 fprintf(stdout, " nr: %zu\n", nr); 2187 2188 for (i = 0; i < nr; i++) { 2189 struct id_index_entry *e = &ie->entries[i]; 2190 struct perf_sample_id *sid; 2191 2192 if (dump_trace) { 2193 fprintf(stdout, " ... id: %"PRIu64, e->id); 2194 fprintf(stdout, " idx: %"PRIu64, e->idx); 2195 fprintf(stdout, " cpu: %"PRId64, e->cpu); 2196 fprintf(stdout, " tid: %"PRId64"\n", e->tid); 2197 } 2198 2199 sid = perf_evlist__id2sid(evlist, e->id); 2200 if (!sid) 2201 return -ENOENT; 2202 sid->idx = e->idx; 2203 sid->cpu = e->cpu; 2204 sid->tid = e->tid; 2205 } 2206 return 0; 2207 } 2208 2209 int perf_event__synthesize_id_index(struct perf_tool *tool, 2210 perf_event__handler_t process, 2211 struct perf_evlist *evlist, 2212 struct machine *machine) 2213 { 2214 union perf_event *ev; 2215 struct perf_evsel *evsel; 2216 size_t nr = 0, i = 0, sz, max_nr, n; 2217 int err; 2218 2219 pr_debug2("Synthesizing id index\n"); 2220 2221 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) / 2222 sizeof(struct id_index_entry); 2223 2224 evlist__for_each(evlist, evsel) 2225 nr += evsel->ids; 2226 2227 n = nr > max_nr ? max_nr : nr; 2228 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry); 2229 ev = zalloc(sz); 2230 if (!ev) 2231 return -ENOMEM; 2232 2233 ev->id_index.header.type = PERF_RECORD_ID_INDEX; 2234 ev->id_index.header.size = sz; 2235 ev->id_index.nr = n; 2236 2237 evlist__for_each(evlist, evsel) { 2238 u32 j; 2239 2240 for (j = 0; j < evsel->ids; j++) { 2241 struct id_index_entry *e; 2242 struct perf_sample_id *sid; 2243 2244 if (i >= n) { 2245 err = process(tool, ev, NULL, machine); 2246 if (err) 2247 goto out_err; 2248 nr -= n; 2249 i = 0; 2250 } 2251 2252 e = &ev->id_index.entries[i++]; 2253 2254 e->id = evsel->id[j]; 2255 2256 sid = perf_evlist__id2sid(evlist, e->id); 2257 if (!sid) { 2258 free(ev); 2259 return -ENOENT; 2260 } 2261 2262 e->idx = sid->idx; 2263 e->cpu = sid->cpu; 2264 e->tid = sid->tid; 2265 } 2266 } 2267 2268 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry); 2269 ev->id_index.header.size = sz; 2270 ev->id_index.nr = nr; 2271 2272 err = process(tool, ev, NULL, machine); 2273 out_err: 2274 free(ev); 2275 2276 return err; 2277 } 2278