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_finished_round_stub(struct perf_tool *tool __maybe_unused, 244 union perf_event *event __maybe_unused, 245 struct ordered_events *oe __maybe_unused) 246 { 247 dump_printf(": unhandled!\n"); 248 return 0; 249 } 250 251 static int process_finished_round(struct perf_tool *tool, 252 union perf_event *event, 253 struct ordered_events *oe); 254 255 static int skipn(int fd, off_t n) 256 { 257 char buf[4096]; 258 ssize_t ret; 259 260 while (n > 0) { 261 ret = read(fd, buf, min(n, (off_t)sizeof(buf))); 262 if (ret <= 0) 263 return ret; 264 n -= ret; 265 } 266 267 return 0; 268 } 269 270 static s64 process_event_auxtrace_stub(struct perf_tool *tool __maybe_unused, 271 union perf_event *event, 272 struct perf_session *session 273 __maybe_unused) 274 { 275 dump_printf(": unhandled!\n"); 276 if (perf_data_file__is_pipe(session->file)) 277 skipn(perf_data_file__fd(session->file), event->auxtrace.size); 278 return event->auxtrace.size; 279 } 280 281 static int process_event_op2_stub(struct perf_tool *tool __maybe_unused, 282 union perf_event *event __maybe_unused, 283 struct perf_session *session __maybe_unused) 284 { 285 dump_printf(": unhandled!\n"); 286 return 0; 287 } 288 289 290 static 291 int process_event_thread_map_stub(struct perf_tool *tool __maybe_unused, 292 union perf_event *event __maybe_unused, 293 struct perf_session *session __maybe_unused) 294 { 295 if (dump_trace) 296 perf_event__fprintf_thread_map(event, stdout); 297 298 dump_printf(": unhandled!\n"); 299 return 0; 300 } 301 302 static 303 int process_event_cpu_map_stub(struct perf_tool *tool __maybe_unused, 304 union perf_event *event __maybe_unused, 305 struct perf_session *session __maybe_unused) 306 { 307 if (dump_trace) 308 perf_event__fprintf_cpu_map(event, stdout); 309 310 dump_printf(": unhandled!\n"); 311 return 0; 312 } 313 314 static 315 int process_event_stat_config_stub(struct perf_tool *tool __maybe_unused, 316 union perf_event *event __maybe_unused, 317 struct perf_session *session __maybe_unused) 318 { 319 if (dump_trace) 320 perf_event__fprintf_stat_config(event, stdout); 321 322 dump_printf(": unhandled!\n"); 323 return 0; 324 } 325 326 static int process_stat_stub(struct perf_tool *tool __maybe_unused, 327 union perf_event *event __maybe_unused, 328 struct perf_session *perf_session 329 __maybe_unused) 330 { 331 if (dump_trace) 332 perf_event__fprintf_stat(event, stdout); 333 334 dump_printf(": unhandled!\n"); 335 return 0; 336 } 337 338 static int process_stat_round_stub(struct perf_tool *tool __maybe_unused, 339 union perf_event *event __maybe_unused, 340 struct perf_session *perf_session 341 __maybe_unused) 342 { 343 if (dump_trace) 344 perf_event__fprintf_stat_round(event, stdout); 345 346 dump_printf(": unhandled!\n"); 347 return 0; 348 } 349 350 void perf_tool__fill_defaults(struct perf_tool *tool) 351 { 352 if (tool->sample == NULL) 353 tool->sample = process_event_sample_stub; 354 if (tool->mmap == NULL) 355 tool->mmap = process_event_stub; 356 if (tool->mmap2 == NULL) 357 tool->mmap2 = process_event_stub; 358 if (tool->comm == NULL) 359 tool->comm = process_event_stub; 360 if (tool->fork == NULL) 361 tool->fork = process_event_stub; 362 if (tool->exit == NULL) 363 tool->exit = process_event_stub; 364 if (tool->lost == NULL) 365 tool->lost = perf_event__process_lost; 366 if (tool->lost_samples == NULL) 367 tool->lost_samples = perf_event__process_lost_samples; 368 if (tool->aux == NULL) 369 tool->aux = perf_event__process_aux; 370 if (tool->itrace_start == NULL) 371 tool->itrace_start = perf_event__process_itrace_start; 372 if (tool->context_switch == NULL) 373 tool->context_switch = perf_event__process_switch; 374 if (tool->read == NULL) 375 tool->read = process_event_sample_stub; 376 if (tool->throttle == NULL) 377 tool->throttle = process_event_stub; 378 if (tool->unthrottle == NULL) 379 tool->unthrottle = process_event_stub; 380 if (tool->attr == NULL) 381 tool->attr = process_event_synth_attr_stub; 382 if (tool->event_update == NULL) 383 tool->event_update = process_event_synth_event_update_stub; 384 if (tool->tracing_data == NULL) 385 tool->tracing_data = process_event_synth_tracing_data_stub; 386 if (tool->build_id == NULL) 387 tool->build_id = process_event_op2_stub; 388 if (tool->finished_round == NULL) { 389 if (tool->ordered_events) 390 tool->finished_round = process_finished_round; 391 else 392 tool->finished_round = process_finished_round_stub; 393 } 394 if (tool->id_index == NULL) 395 tool->id_index = process_event_op2_stub; 396 if (tool->auxtrace_info == NULL) 397 tool->auxtrace_info = process_event_op2_stub; 398 if (tool->auxtrace == NULL) 399 tool->auxtrace = process_event_auxtrace_stub; 400 if (tool->auxtrace_error == NULL) 401 tool->auxtrace_error = process_event_op2_stub; 402 if (tool->thread_map == NULL) 403 tool->thread_map = process_event_thread_map_stub; 404 if (tool->cpu_map == NULL) 405 tool->cpu_map = process_event_cpu_map_stub; 406 if (tool->stat_config == NULL) 407 tool->stat_config = process_event_stat_config_stub; 408 if (tool->stat == NULL) 409 tool->stat = process_stat_stub; 410 if (tool->stat_round == NULL) 411 tool->stat_round = process_stat_round_stub; 412 if (tool->time_conv == NULL) 413 tool->time_conv = process_event_op2_stub; 414 } 415 416 static void swap_sample_id_all(union perf_event *event, void *data) 417 { 418 void *end = (void *) event + event->header.size; 419 int size = end - data; 420 421 BUG_ON(size % sizeof(u64)); 422 mem_bswap_64(data, size); 423 } 424 425 static void perf_event__all64_swap(union perf_event *event, 426 bool sample_id_all __maybe_unused) 427 { 428 struct perf_event_header *hdr = &event->header; 429 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); 430 } 431 432 static void perf_event__comm_swap(union perf_event *event, bool sample_id_all) 433 { 434 event->comm.pid = bswap_32(event->comm.pid); 435 event->comm.tid = bswap_32(event->comm.tid); 436 437 if (sample_id_all) { 438 void *data = &event->comm.comm; 439 440 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 441 swap_sample_id_all(event, data); 442 } 443 } 444 445 static void perf_event__mmap_swap(union perf_event *event, 446 bool sample_id_all) 447 { 448 event->mmap.pid = bswap_32(event->mmap.pid); 449 event->mmap.tid = bswap_32(event->mmap.tid); 450 event->mmap.start = bswap_64(event->mmap.start); 451 event->mmap.len = bswap_64(event->mmap.len); 452 event->mmap.pgoff = bswap_64(event->mmap.pgoff); 453 454 if (sample_id_all) { 455 void *data = &event->mmap.filename; 456 457 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 458 swap_sample_id_all(event, data); 459 } 460 } 461 462 static void perf_event__mmap2_swap(union perf_event *event, 463 bool sample_id_all) 464 { 465 event->mmap2.pid = bswap_32(event->mmap2.pid); 466 event->mmap2.tid = bswap_32(event->mmap2.tid); 467 event->mmap2.start = bswap_64(event->mmap2.start); 468 event->mmap2.len = bswap_64(event->mmap2.len); 469 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff); 470 event->mmap2.maj = bswap_32(event->mmap2.maj); 471 event->mmap2.min = bswap_32(event->mmap2.min); 472 event->mmap2.ino = bswap_64(event->mmap2.ino); 473 474 if (sample_id_all) { 475 void *data = &event->mmap2.filename; 476 477 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 478 swap_sample_id_all(event, data); 479 } 480 } 481 static void perf_event__task_swap(union perf_event *event, bool sample_id_all) 482 { 483 event->fork.pid = bswap_32(event->fork.pid); 484 event->fork.tid = bswap_32(event->fork.tid); 485 event->fork.ppid = bswap_32(event->fork.ppid); 486 event->fork.ptid = bswap_32(event->fork.ptid); 487 event->fork.time = bswap_64(event->fork.time); 488 489 if (sample_id_all) 490 swap_sample_id_all(event, &event->fork + 1); 491 } 492 493 static void perf_event__read_swap(union perf_event *event, bool sample_id_all) 494 { 495 event->read.pid = bswap_32(event->read.pid); 496 event->read.tid = bswap_32(event->read.tid); 497 event->read.value = bswap_64(event->read.value); 498 event->read.time_enabled = bswap_64(event->read.time_enabled); 499 event->read.time_running = bswap_64(event->read.time_running); 500 event->read.id = bswap_64(event->read.id); 501 502 if (sample_id_all) 503 swap_sample_id_all(event, &event->read + 1); 504 } 505 506 static void perf_event__aux_swap(union perf_event *event, bool sample_id_all) 507 { 508 event->aux.aux_offset = bswap_64(event->aux.aux_offset); 509 event->aux.aux_size = bswap_64(event->aux.aux_size); 510 event->aux.flags = bswap_64(event->aux.flags); 511 512 if (sample_id_all) 513 swap_sample_id_all(event, &event->aux + 1); 514 } 515 516 static void perf_event__itrace_start_swap(union perf_event *event, 517 bool sample_id_all) 518 { 519 event->itrace_start.pid = bswap_32(event->itrace_start.pid); 520 event->itrace_start.tid = bswap_32(event->itrace_start.tid); 521 522 if (sample_id_all) 523 swap_sample_id_all(event, &event->itrace_start + 1); 524 } 525 526 static void perf_event__switch_swap(union perf_event *event, bool sample_id_all) 527 { 528 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) { 529 event->context_switch.next_prev_pid = 530 bswap_32(event->context_switch.next_prev_pid); 531 event->context_switch.next_prev_tid = 532 bswap_32(event->context_switch.next_prev_tid); 533 } 534 535 if (sample_id_all) 536 swap_sample_id_all(event, &event->context_switch + 1); 537 } 538 539 static void perf_event__throttle_swap(union perf_event *event, 540 bool sample_id_all) 541 { 542 event->throttle.time = bswap_64(event->throttle.time); 543 event->throttle.id = bswap_64(event->throttle.id); 544 event->throttle.stream_id = bswap_64(event->throttle.stream_id); 545 546 if (sample_id_all) 547 swap_sample_id_all(event, &event->throttle + 1); 548 } 549 550 static u8 revbyte(u8 b) 551 { 552 int rev = (b >> 4) | ((b & 0xf) << 4); 553 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2); 554 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1); 555 return (u8) rev; 556 } 557 558 /* 559 * XXX this is hack in attempt to carry flags bitfield 560 * through endian village. ABI says: 561 * 562 * Bit-fields are allocated from right to left (least to most significant) 563 * on little-endian implementations and from left to right (most to least 564 * significant) on big-endian implementations. 565 * 566 * The above seems to be byte specific, so we need to reverse each 567 * byte of the bitfield. 'Internet' also says this might be implementation 568 * specific and we probably need proper fix and carry perf_event_attr 569 * bitfield flags in separate data file FEAT_ section. Thought this seems 570 * to work for now. 571 */ 572 static void swap_bitfield(u8 *p, unsigned len) 573 { 574 unsigned i; 575 576 for (i = 0; i < len; i++) { 577 *p = revbyte(*p); 578 p++; 579 } 580 } 581 582 /* exported for swapping attributes in file header */ 583 void perf_event__attr_swap(struct perf_event_attr *attr) 584 { 585 attr->type = bswap_32(attr->type); 586 attr->size = bswap_32(attr->size); 587 588 #define bswap_safe(f, n) \ 589 (attr->size > (offsetof(struct perf_event_attr, f) + \ 590 sizeof(attr->f) * (n))) 591 #define bswap_field(f, sz) \ 592 do { \ 593 if (bswap_safe(f, 0)) \ 594 attr->f = bswap_##sz(attr->f); \ 595 } while(0) 596 #define bswap_field_32(f) bswap_field(f, 32) 597 #define bswap_field_64(f) bswap_field(f, 64) 598 599 bswap_field_64(config); 600 bswap_field_64(sample_period); 601 bswap_field_64(sample_type); 602 bswap_field_64(read_format); 603 bswap_field_32(wakeup_events); 604 bswap_field_32(bp_type); 605 bswap_field_64(bp_addr); 606 bswap_field_64(bp_len); 607 bswap_field_64(branch_sample_type); 608 bswap_field_64(sample_regs_user); 609 bswap_field_32(sample_stack_user); 610 bswap_field_32(aux_watermark); 611 612 /* 613 * After read_format are bitfields. Check read_format because 614 * we are unable to use offsetof on bitfield. 615 */ 616 if (bswap_safe(read_format, 1)) 617 swap_bitfield((u8 *) (&attr->read_format + 1), 618 sizeof(u64)); 619 #undef bswap_field_64 620 #undef bswap_field_32 621 #undef bswap_field 622 #undef bswap_safe 623 } 624 625 static void perf_event__hdr_attr_swap(union perf_event *event, 626 bool sample_id_all __maybe_unused) 627 { 628 size_t size; 629 630 perf_event__attr_swap(&event->attr.attr); 631 632 size = event->header.size; 633 size -= (void *)&event->attr.id - (void *)event; 634 mem_bswap_64(event->attr.id, size); 635 } 636 637 static void perf_event__event_update_swap(union perf_event *event, 638 bool sample_id_all __maybe_unused) 639 { 640 event->event_update.type = bswap_64(event->event_update.type); 641 event->event_update.id = bswap_64(event->event_update.id); 642 } 643 644 static void perf_event__event_type_swap(union perf_event *event, 645 bool sample_id_all __maybe_unused) 646 { 647 event->event_type.event_type.event_id = 648 bswap_64(event->event_type.event_type.event_id); 649 } 650 651 static void perf_event__tracing_data_swap(union perf_event *event, 652 bool sample_id_all __maybe_unused) 653 { 654 event->tracing_data.size = bswap_32(event->tracing_data.size); 655 } 656 657 static void perf_event__auxtrace_info_swap(union perf_event *event, 658 bool sample_id_all __maybe_unused) 659 { 660 size_t size; 661 662 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type); 663 664 size = event->header.size; 665 size -= (void *)&event->auxtrace_info.priv - (void *)event; 666 mem_bswap_64(event->auxtrace_info.priv, size); 667 } 668 669 static void perf_event__auxtrace_swap(union perf_event *event, 670 bool sample_id_all __maybe_unused) 671 { 672 event->auxtrace.size = bswap_64(event->auxtrace.size); 673 event->auxtrace.offset = bswap_64(event->auxtrace.offset); 674 event->auxtrace.reference = bswap_64(event->auxtrace.reference); 675 event->auxtrace.idx = bswap_32(event->auxtrace.idx); 676 event->auxtrace.tid = bswap_32(event->auxtrace.tid); 677 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu); 678 } 679 680 static void perf_event__auxtrace_error_swap(union perf_event *event, 681 bool sample_id_all __maybe_unused) 682 { 683 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type); 684 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code); 685 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu); 686 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid); 687 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid); 688 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip); 689 } 690 691 static void perf_event__thread_map_swap(union perf_event *event, 692 bool sample_id_all __maybe_unused) 693 { 694 unsigned i; 695 696 event->thread_map.nr = bswap_64(event->thread_map.nr); 697 698 for (i = 0; i < event->thread_map.nr; i++) 699 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid); 700 } 701 702 static void perf_event__cpu_map_swap(union perf_event *event, 703 bool sample_id_all __maybe_unused) 704 { 705 struct cpu_map_data *data = &event->cpu_map.data; 706 struct cpu_map_entries *cpus; 707 struct cpu_map_mask *mask; 708 unsigned i; 709 710 data->type = bswap_64(data->type); 711 712 switch (data->type) { 713 case PERF_CPU_MAP__CPUS: 714 cpus = (struct cpu_map_entries *)data->data; 715 716 cpus->nr = bswap_16(cpus->nr); 717 718 for (i = 0; i < cpus->nr; i++) 719 cpus->cpu[i] = bswap_16(cpus->cpu[i]); 720 break; 721 case PERF_CPU_MAP__MASK: 722 mask = (struct cpu_map_mask *) data->data; 723 724 mask->nr = bswap_16(mask->nr); 725 mask->long_size = bswap_16(mask->long_size); 726 727 switch (mask->long_size) { 728 case 4: mem_bswap_32(&mask->mask, mask->nr); break; 729 case 8: mem_bswap_64(&mask->mask, mask->nr); break; 730 default: 731 pr_err("cpu_map swap: unsupported long size\n"); 732 } 733 default: 734 break; 735 } 736 } 737 738 static void perf_event__stat_config_swap(union perf_event *event, 739 bool sample_id_all __maybe_unused) 740 { 741 u64 size; 742 743 size = event->stat_config.nr * sizeof(event->stat_config.data[0]); 744 size += 1; /* nr item itself */ 745 mem_bswap_64(&event->stat_config.nr, size); 746 } 747 748 static void perf_event__stat_swap(union perf_event *event, 749 bool sample_id_all __maybe_unused) 750 { 751 event->stat.id = bswap_64(event->stat.id); 752 event->stat.thread = bswap_32(event->stat.thread); 753 event->stat.cpu = bswap_32(event->stat.cpu); 754 event->stat.val = bswap_64(event->stat.val); 755 event->stat.ena = bswap_64(event->stat.ena); 756 event->stat.run = bswap_64(event->stat.run); 757 } 758 759 static void perf_event__stat_round_swap(union perf_event *event, 760 bool sample_id_all __maybe_unused) 761 { 762 event->stat_round.type = bswap_64(event->stat_round.type); 763 event->stat_round.time = bswap_64(event->stat_round.time); 764 } 765 766 typedef void (*perf_event__swap_op)(union perf_event *event, 767 bool sample_id_all); 768 769 static perf_event__swap_op perf_event__swap_ops[] = { 770 [PERF_RECORD_MMAP] = perf_event__mmap_swap, 771 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap, 772 [PERF_RECORD_COMM] = perf_event__comm_swap, 773 [PERF_RECORD_FORK] = perf_event__task_swap, 774 [PERF_RECORD_EXIT] = perf_event__task_swap, 775 [PERF_RECORD_LOST] = perf_event__all64_swap, 776 [PERF_RECORD_READ] = perf_event__read_swap, 777 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap, 778 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap, 779 [PERF_RECORD_SAMPLE] = perf_event__all64_swap, 780 [PERF_RECORD_AUX] = perf_event__aux_swap, 781 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap, 782 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap, 783 [PERF_RECORD_SWITCH] = perf_event__switch_swap, 784 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap, 785 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, 786 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, 787 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, 788 [PERF_RECORD_HEADER_BUILD_ID] = NULL, 789 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap, 790 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap, 791 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap, 792 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap, 793 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap, 794 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap, 795 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap, 796 [PERF_RECORD_STAT] = perf_event__stat_swap, 797 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap, 798 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap, 799 [PERF_RECORD_TIME_CONV] = perf_event__all64_swap, 800 [PERF_RECORD_HEADER_MAX] = NULL, 801 }; 802 803 /* 804 * When perf record finishes a pass on every buffers, it records this pseudo 805 * event. 806 * We record the max timestamp t found in the pass n. 807 * Assuming these timestamps are monotonic across cpus, we know that if 808 * a buffer still has events with timestamps below t, they will be all 809 * available and then read in the pass n + 1. 810 * Hence when we start to read the pass n + 2, we can safely flush every 811 * events with timestamps below t. 812 * 813 * ============ PASS n ================= 814 * CPU 0 | CPU 1 815 * | 816 * cnt1 timestamps | cnt2 timestamps 817 * 1 | 2 818 * 2 | 3 819 * - | 4 <--- max recorded 820 * 821 * ============ PASS n + 1 ============== 822 * CPU 0 | CPU 1 823 * | 824 * cnt1 timestamps | cnt2 timestamps 825 * 3 | 5 826 * 4 | 6 827 * 5 | 7 <---- max recorded 828 * 829 * Flush every events below timestamp 4 830 * 831 * ============ PASS n + 2 ============== 832 * CPU 0 | CPU 1 833 * | 834 * cnt1 timestamps | cnt2 timestamps 835 * 6 | 8 836 * 7 | 9 837 * - | 10 838 * 839 * Flush every events below timestamp 7 840 * etc... 841 */ 842 static int process_finished_round(struct perf_tool *tool __maybe_unused, 843 union perf_event *event __maybe_unused, 844 struct ordered_events *oe) 845 { 846 if (dump_trace) 847 fprintf(stdout, "\n"); 848 return ordered_events__flush(oe, OE_FLUSH__ROUND); 849 } 850 851 int perf_session__queue_event(struct perf_session *s, union perf_event *event, 852 struct perf_sample *sample, u64 file_offset) 853 { 854 return ordered_events__queue(&s->ordered_events, event, sample, file_offset); 855 } 856 857 static void callchain__lbr_callstack_printf(struct perf_sample *sample) 858 { 859 struct ip_callchain *callchain = sample->callchain; 860 struct branch_stack *lbr_stack = sample->branch_stack; 861 u64 kernel_callchain_nr = callchain->nr; 862 unsigned int i; 863 864 for (i = 0; i < kernel_callchain_nr; i++) { 865 if (callchain->ips[i] == PERF_CONTEXT_USER) 866 break; 867 } 868 869 if ((i != kernel_callchain_nr) && lbr_stack->nr) { 870 u64 total_nr; 871 /* 872 * LBR callstack can only get user call chain, 873 * i is kernel call chain number, 874 * 1 is PERF_CONTEXT_USER. 875 * 876 * The user call chain is stored in LBR registers. 877 * LBR are pair registers. The caller is stored 878 * in "from" register, while the callee is stored 879 * in "to" register. 880 * For example, there is a call stack 881 * "A"->"B"->"C"->"D". 882 * The LBR registers will recorde like 883 * "C"->"D", "B"->"C", "A"->"B". 884 * So only the first "to" register and all "from" 885 * registers are needed to construct the whole stack. 886 */ 887 total_nr = i + 1 + lbr_stack->nr + 1; 888 kernel_callchain_nr = i + 1; 889 890 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr); 891 892 for (i = 0; i < kernel_callchain_nr; i++) 893 printf("..... %2d: %016" PRIx64 "\n", 894 i, callchain->ips[i]); 895 896 printf("..... %2d: %016" PRIx64 "\n", 897 (int)(kernel_callchain_nr), lbr_stack->entries[0].to); 898 for (i = 0; i < lbr_stack->nr; i++) 899 printf("..... %2d: %016" PRIx64 "\n", 900 (int)(i + kernel_callchain_nr + 1), lbr_stack->entries[i].from); 901 } 902 } 903 904 static void callchain__printf(struct perf_evsel *evsel, 905 struct perf_sample *sample) 906 { 907 unsigned int i; 908 struct ip_callchain *callchain = sample->callchain; 909 910 if (perf_evsel__has_branch_callstack(evsel)) 911 callchain__lbr_callstack_printf(sample); 912 913 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr); 914 915 for (i = 0; i < callchain->nr; i++) 916 printf("..... %2d: %016" PRIx64 "\n", 917 i, callchain->ips[i]); 918 } 919 920 static void branch_stack__printf(struct perf_sample *sample) 921 { 922 uint64_t i; 923 924 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr); 925 926 for (i = 0; i < sample->branch_stack->nr; i++) { 927 struct branch_entry *e = &sample->branch_stack->entries[i]; 928 929 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x\n", 930 i, e->from, e->to, 931 e->flags.cycles, 932 e->flags.mispred ? "M" : " ", 933 e->flags.predicted ? "P" : " ", 934 e->flags.abort ? "A" : " ", 935 e->flags.in_tx ? "T" : " ", 936 (unsigned)e->flags.reserved); 937 } 938 } 939 940 static void regs_dump__printf(u64 mask, u64 *regs) 941 { 942 unsigned rid, i = 0; 943 944 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) { 945 u64 val = regs[i++]; 946 947 printf(".... %-5s 0x%" PRIx64 "\n", 948 perf_reg_name(rid), val); 949 } 950 } 951 952 static const char *regs_abi[] = { 953 [PERF_SAMPLE_REGS_ABI_NONE] = "none", 954 [PERF_SAMPLE_REGS_ABI_32] = "32-bit", 955 [PERF_SAMPLE_REGS_ABI_64] = "64-bit", 956 }; 957 958 static inline const char *regs_dump_abi(struct regs_dump *d) 959 { 960 if (d->abi > PERF_SAMPLE_REGS_ABI_64) 961 return "unknown"; 962 963 return regs_abi[d->abi]; 964 } 965 966 static void regs__printf(const char *type, struct regs_dump *regs) 967 { 968 u64 mask = regs->mask; 969 970 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n", 971 type, 972 mask, 973 regs_dump_abi(regs)); 974 975 regs_dump__printf(mask, regs->regs); 976 } 977 978 static void regs_user__printf(struct perf_sample *sample) 979 { 980 struct regs_dump *user_regs = &sample->user_regs; 981 982 if (user_regs->regs) 983 regs__printf("user", user_regs); 984 } 985 986 static void regs_intr__printf(struct perf_sample *sample) 987 { 988 struct regs_dump *intr_regs = &sample->intr_regs; 989 990 if (intr_regs->regs) 991 regs__printf("intr", intr_regs); 992 } 993 994 static void stack_user__printf(struct stack_dump *dump) 995 { 996 printf("... ustack: size %" PRIu64 ", offset 0x%x\n", 997 dump->size, dump->offset); 998 } 999 1000 static void perf_evlist__print_tstamp(struct perf_evlist *evlist, 1001 union perf_event *event, 1002 struct perf_sample *sample) 1003 { 1004 u64 sample_type = __perf_evlist__combined_sample_type(evlist); 1005 1006 if (event->header.type != PERF_RECORD_SAMPLE && 1007 !perf_evlist__sample_id_all(evlist)) { 1008 fputs("-1 -1 ", stdout); 1009 return; 1010 } 1011 1012 if ((sample_type & PERF_SAMPLE_CPU)) 1013 printf("%u ", sample->cpu); 1014 1015 if (sample_type & PERF_SAMPLE_TIME) 1016 printf("%" PRIu64 " ", sample->time); 1017 } 1018 1019 static void sample_read__printf(struct perf_sample *sample, u64 read_format) 1020 { 1021 printf("... sample_read:\n"); 1022 1023 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 1024 printf("...... time enabled %016" PRIx64 "\n", 1025 sample->read.time_enabled); 1026 1027 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 1028 printf("...... time running %016" PRIx64 "\n", 1029 sample->read.time_running); 1030 1031 if (read_format & PERF_FORMAT_GROUP) { 1032 u64 i; 1033 1034 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr); 1035 1036 for (i = 0; i < sample->read.group.nr; i++) { 1037 struct sample_read_value *value; 1038 1039 value = &sample->read.group.values[i]; 1040 printf("..... id %016" PRIx64 1041 ", value %016" PRIx64 "\n", 1042 value->id, value->value); 1043 } 1044 } else 1045 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n", 1046 sample->read.one.id, sample->read.one.value); 1047 } 1048 1049 static void dump_event(struct perf_evlist *evlist, union perf_event *event, 1050 u64 file_offset, struct perf_sample *sample) 1051 { 1052 if (!dump_trace) 1053 return; 1054 1055 printf("\n%#" PRIx64 " [%#x]: event: %d\n", 1056 file_offset, event->header.size, event->header.type); 1057 1058 trace_event(event); 1059 1060 if (sample) 1061 perf_evlist__print_tstamp(evlist, event, sample); 1062 1063 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, 1064 event->header.size, perf_event__name(event->header.type)); 1065 } 1066 1067 static void dump_sample(struct perf_evsel *evsel, union perf_event *event, 1068 struct perf_sample *sample) 1069 { 1070 u64 sample_type; 1071 1072 if (!dump_trace) 1073 return; 1074 1075 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", 1076 event->header.misc, sample->pid, sample->tid, sample->ip, 1077 sample->period, sample->addr); 1078 1079 sample_type = evsel->attr.sample_type; 1080 1081 if (sample_type & PERF_SAMPLE_CALLCHAIN) 1082 callchain__printf(evsel, sample); 1083 1084 if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !perf_evsel__has_branch_callstack(evsel)) 1085 branch_stack__printf(sample); 1086 1087 if (sample_type & PERF_SAMPLE_REGS_USER) 1088 regs_user__printf(sample); 1089 1090 if (sample_type & PERF_SAMPLE_REGS_INTR) 1091 regs_intr__printf(sample); 1092 1093 if (sample_type & PERF_SAMPLE_STACK_USER) 1094 stack_user__printf(&sample->user_stack); 1095 1096 if (sample_type & PERF_SAMPLE_WEIGHT) 1097 printf("... weight: %" PRIu64 "\n", sample->weight); 1098 1099 if (sample_type & PERF_SAMPLE_DATA_SRC) 1100 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src); 1101 1102 if (sample_type & PERF_SAMPLE_TRANSACTION) 1103 printf("... transaction: %" PRIx64 "\n", sample->transaction); 1104 1105 if (sample_type & PERF_SAMPLE_READ) 1106 sample_read__printf(sample, evsel->attr.read_format); 1107 } 1108 1109 static struct machine *machines__find_for_cpumode(struct machines *machines, 1110 union perf_event *event, 1111 struct perf_sample *sample) 1112 { 1113 struct machine *machine; 1114 1115 if (perf_guest && 1116 ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || 1117 (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) { 1118 u32 pid; 1119 1120 if (event->header.type == PERF_RECORD_MMAP 1121 || event->header.type == PERF_RECORD_MMAP2) 1122 pid = event->mmap.pid; 1123 else 1124 pid = sample->pid; 1125 1126 machine = machines__find(machines, pid); 1127 if (!machine) 1128 machine = machines__findnew(machines, DEFAULT_GUEST_KERNEL_ID); 1129 return machine; 1130 } 1131 1132 return &machines->host; 1133 } 1134 1135 static int deliver_sample_value(struct perf_evlist *evlist, 1136 struct perf_tool *tool, 1137 union perf_event *event, 1138 struct perf_sample *sample, 1139 struct sample_read_value *v, 1140 struct machine *machine) 1141 { 1142 struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id); 1143 1144 if (sid) { 1145 sample->id = v->id; 1146 sample->period = v->value - sid->period; 1147 sid->period = v->value; 1148 } 1149 1150 if (!sid || sid->evsel == NULL) { 1151 ++evlist->stats.nr_unknown_id; 1152 return 0; 1153 } 1154 1155 return tool->sample(tool, event, sample, sid->evsel, machine); 1156 } 1157 1158 static int deliver_sample_group(struct perf_evlist *evlist, 1159 struct perf_tool *tool, 1160 union perf_event *event, 1161 struct perf_sample *sample, 1162 struct machine *machine) 1163 { 1164 int ret = -EINVAL; 1165 u64 i; 1166 1167 for (i = 0; i < sample->read.group.nr; i++) { 1168 ret = deliver_sample_value(evlist, tool, event, sample, 1169 &sample->read.group.values[i], 1170 machine); 1171 if (ret) 1172 break; 1173 } 1174 1175 return ret; 1176 } 1177 1178 static int 1179 perf_evlist__deliver_sample(struct perf_evlist *evlist, 1180 struct perf_tool *tool, 1181 union perf_event *event, 1182 struct perf_sample *sample, 1183 struct perf_evsel *evsel, 1184 struct machine *machine) 1185 { 1186 /* We know evsel != NULL. */ 1187 u64 sample_type = evsel->attr.sample_type; 1188 u64 read_format = evsel->attr.read_format; 1189 1190 /* Standard sample delievery. */ 1191 if (!(sample_type & PERF_SAMPLE_READ)) 1192 return tool->sample(tool, event, sample, evsel, machine); 1193 1194 /* For PERF_SAMPLE_READ we have either single or group mode. */ 1195 if (read_format & PERF_FORMAT_GROUP) 1196 return deliver_sample_group(evlist, tool, event, sample, 1197 machine); 1198 else 1199 return deliver_sample_value(evlist, tool, event, sample, 1200 &sample->read.one, machine); 1201 } 1202 1203 static int machines__deliver_event(struct machines *machines, 1204 struct perf_evlist *evlist, 1205 union perf_event *event, 1206 struct perf_sample *sample, 1207 struct perf_tool *tool, u64 file_offset) 1208 { 1209 struct perf_evsel *evsel; 1210 struct machine *machine; 1211 1212 dump_event(evlist, event, file_offset, sample); 1213 1214 evsel = perf_evlist__id2evsel(evlist, sample->id); 1215 1216 machine = machines__find_for_cpumode(machines, event, sample); 1217 1218 switch (event->header.type) { 1219 case PERF_RECORD_SAMPLE: 1220 if (evsel == NULL) { 1221 ++evlist->stats.nr_unknown_id; 1222 return 0; 1223 } 1224 dump_sample(evsel, event, sample); 1225 if (machine == NULL) { 1226 ++evlist->stats.nr_unprocessable_samples; 1227 return 0; 1228 } 1229 return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine); 1230 case PERF_RECORD_MMAP: 1231 return tool->mmap(tool, event, sample, machine); 1232 case PERF_RECORD_MMAP2: 1233 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT) 1234 ++evlist->stats.nr_proc_map_timeout; 1235 return tool->mmap2(tool, event, sample, machine); 1236 case PERF_RECORD_COMM: 1237 return tool->comm(tool, event, sample, machine); 1238 case PERF_RECORD_FORK: 1239 return tool->fork(tool, event, sample, machine); 1240 case PERF_RECORD_EXIT: 1241 return tool->exit(tool, event, sample, machine); 1242 case PERF_RECORD_LOST: 1243 if (tool->lost == perf_event__process_lost) 1244 evlist->stats.total_lost += event->lost.lost; 1245 return tool->lost(tool, event, sample, machine); 1246 case PERF_RECORD_LOST_SAMPLES: 1247 if (tool->lost_samples == perf_event__process_lost_samples) 1248 evlist->stats.total_lost_samples += event->lost_samples.lost; 1249 return tool->lost_samples(tool, event, sample, machine); 1250 case PERF_RECORD_READ: 1251 return tool->read(tool, event, sample, evsel, machine); 1252 case PERF_RECORD_THROTTLE: 1253 return tool->throttle(tool, event, sample, machine); 1254 case PERF_RECORD_UNTHROTTLE: 1255 return tool->unthrottle(tool, event, sample, machine); 1256 case PERF_RECORD_AUX: 1257 if (tool->aux == perf_event__process_aux && 1258 (event->aux.flags & PERF_AUX_FLAG_TRUNCATED)) 1259 evlist->stats.total_aux_lost += 1; 1260 return tool->aux(tool, event, sample, machine); 1261 case PERF_RECORD_ITRACE_START: 1262 return tool->itrace_start(tool, event, sample, machine); 1263 case PERF_RECORD_SWITCH: 1264 case PERF_RECORD_SWITCH_CPU_WIDE: 1265 return tool->context_switch(tool, event, sample, machine); 1266 default: 1267 ++evlist->stats.nr_unknown_events; 1268 return -1; 1269 } 1270 } 1271 1272 static int perf_session__deliver_event(struct perf_session *session, 1273 union perf_event *event, 1274 struct perf_sample *sample, 1275 struct perf_tool *tool, 1276 u64 file_offset) 1277 { 1278 int ret; 1279 1280 ret = auxtrace__process_event(session, event, sample, tool); 1281 if (ret < 0) 1282 return ret; 1283 if (ret > 0) 1284 return 0; 1285 1286 return machines__deliver_event(&session->machines, session->evlist, 1287 event, sample, tool, file_offset); 1288 } 1289 1290 static s64 perf_session__process_user_event(struct perf_session *session, 1291 union perf_event *event, 1292 u64 file_offset) 1293 { 1294 struct ordered_events *oe = &session->ordered_events; 1295 struct perf_tool *tool = session->tool; 1296 int fd = perf_data_file__fd(session->file); 1297 int err; 1298 1299 dump_event(session->evlist, event, file_offset, NULL); 1300 1301 /* These events are processed right away */ 1302 switch (event->header.type) { 1303 case PERF_RECORD_HEADER_ATTR: 1304 err = tool->attr(tool, event, &session->evlist); 1305 if (err == 0) { 1306 perf_session__set_id_hdr_size(session); 1307 perf_session__set_comm_exec(session); 1308 } 1309 return err; 1310 case PERF_RECORD_EVENT_UPDATE: 1311 return tool->event_update(tool, event, &session->evlist); 1312 case PERF_RECORD_HEADER_EVENT_TYPE: 1313 /* 1314 * Depreceated, but we need to handle it for sake 1315 * of old data files create in pipe mode. 1316 */ 1317 return 0; 1318 case PERF_RECORD_HEADER_TRACING_DATA: 1319 /* setup for reading amidst mmap */ 1320 lseek(fd, file_offset, SEEK_SET); 1321 return tool->tracing_data(tool, event, session); 1322 case PERF_RECORD_HEADER_BUILD_ID: 1323 return tool->build_id(tool, event, session); 1324 case PERF_RECORD_FINISHED_ROUND: 1325 return tool->finished_round(tool, event, oe); 1326 case PERF_RECORD_ID_INDEX: 1327 return tool->id_index(tool, event, session); 1328 case PERF_RECORD_AUXTRACE_INFO: 1329 return tool->auxtrace_info(tool, event, session); 1330 case PERF_RECORD_AUXTRACE: 1331 /* setup for reading amidst mmap */ 1332 lseek(fd, file_offset + event->header.size, SEEK_SET); 1333 return tool->auxtrace(tool, event, session); 1334 case PERF_RECORD_AUXTRACE_ERROR: 1335 perf_session__auxtrace_error_inc(session, event); 1336 return tool->auxtrace_error(tool, event, session); 1337 case PERF_RECORD_THREAD_MAP: 1338 return tool->thread_map(tool, event, session); 1339 case PERF_RECORD_CPU_MAP: 1340 return tool->cpu_map(tool, event, session); 1341 case PERF_RECORD_STAT_CONFIG: 1342 return tool->stat_config(tool, event, session); 1343 case PERF_RECORD_STAT: 1344 return tool->stat(tool, event, session); 1345 case PERF_RECORD_STAT_ROUND: 1346 return tool->stat_round(tool, event, session); 1347 case PERF_RECORD_TIME_CONV: 1348 session->time_conv = event->time_conv; 1349 return tool->time_conv(tool, event, session); 1350 default: 1351 return -EINVAL; 1352 } 1353 } 1354 1355 int perf_session__deliver_synth_event(struct perf_session *session, 1356 union perf_event *event, 1357 struct perf_sample *sample) 1358 { 1359 struct perf_evlist *evlist = session->evlist; 1360 struct perf_tool *tool = session->tool; 1361 1362 events_stats__inc(&evlist->stats, event->header.type); 1363 1364 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1365 return perf_session__process_user_event(session, event, 0); 1366 1367 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0); 1368 } 1369 1370 static void event_swap(union perf_event *event, bool sample_id_all) 1371 { 1372 perf_event__swap_op swap; 1373 1374 swap = perf_event__swap_ops[event->header.type]; 1375 if (swap) 1376 swap(event, sample_id_all); 1377 } 1378 1379 int perf_session__peek_event(struct perf_session *session, off_t file_offset, 1380 void *buf, size_t buf_sz, 1381 union perf_event **event_ptr, 1382 struct perf_sample *sample) 1383 { 1384 union perf_event *event; 1385 size_t hdr_sz, rest; 1386 int fd; 1387 1388 if (session->one_mmap && !session->header.needs_swap) { 1389 event = file_offset - session->one_mmap_offset + 1390 session->one_mmap_addr; 1391 goto out_parse_sample; 1392 } 1393 1394 if (perf_data_file__is_pipe(session->file)) 1395 return -1; 1396 1397 fd = perf_data_file__fd(session->file); 1398 hdr_sz = sizeof(struct perf_event_header); 1399 1400 if (buf_sz < hdr_sz) 1401 return -1; 1402 1403 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 || 1404 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz) 1405 return -1; 1406 1407 event = (union perf_event *)buf; 1408 1409 if (session->header.needs_swap) 1410 perf_event_header__bswap(&event->header); 1411 1412 if (event->header.size < hdr_sz || event->header.size > buf_sz) 1413 return -1; 1414 1415 rest = event->header.size - hdr_sz; 1416 1417 if (readn(fd, buf, rest) != (ssize_t)rest) 1418 return -1; 1419 1420 if (session->header.needs_swap) 1421 event_swap(event, perf_evlist__sample_id_all(session->evlist)); 1422 1423 out_parse_sample: 1424 1425 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START && 1426 perf_evlist__parse_sample(session->evlist, event, sample)) 1427 return -1; 1428 1429 *event_ptr = event; 1430 1431 return 0; 1432 } 1433 1434 static s64 perf_session__process_event(struct perf_session *session, 1435 union perf_event *event, u64 file_offset) 1436 { 1437 struct perf_evlist *evlist = session->evlist; 1438 struct perf_tool *tool = session->tool; 1439 struct perf_sample sample; 1440 int ret; 1441 1442 if (session->header.needs_swap) 1443 event_swap(event, perf_evlist__sample_id_all(evlist)); 1444 1445 if (event->header.type >= PERF_RECORD_HEADER_MAX) 1446 return -EINVAL; 1447 1448 events_stats__inc(&evlist->stats, event->header.type); 1449 1450 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1451 return perf_session__process_user_event(session, event, file_offset); 1452 1453 /* 1454 * For all kernel events we get the sample data 1455 */ 1456 ret = perf_evlist__parse_sample(evlist, event, &sample); 1457 if (ret) 1458 return ret; 1459 1460 if (tool->ordered_events) { 1461 ret = perf_session__queue_event(session, event, &sample, file_offset); 1462 if (ret != -ETIME) 1463 return ret; 1464 } 1465 1466 return perf_session__deliver_event(session, event, &sample, tool, 1467 file_offset); 1468 } 1469 1470 void perf_event_header__bswap(struct perf_event_header *hdr) 1471 { 1472 hdr->type = bswap_32(hdr->type); 1473 hdr->misc = bswap_16(hdr->misc); 1474 hdr->size = bswap_16(hdr->size); 1475 } 1476 1477 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) 1478 { 1479 return machine__findnew_thread(&session->machines.host, -1, pid); 1480 } 1481 1482 int perf_session__register_idle_thread(struct perf_session *session) 1483 { 1484 struct thread *thread; 1485 int err = 0; 1486 1487 thread = machine__findnew_thread(&session->machines.host, 0, 0); 1488 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) { 1489 pr_err("problem inserting idle task.\n"); 1490 err = -1; 1491 } 1492 1493 /* machine__findnew_thread() got the thread, so put it */ 1494 thread__put(thread); 1495 return err; 1496 } 1497 1498 static void perf_session__warn_about_errors(const struct perf_session *session) 1499 { 1500 const struct events_stats *stats = &session->evlist->stats; 1501 const struct ordered_events *oe = &session->ordered_events; 1502 1503 if (session->tool->lost == perf_event__process_lost && 1504 stats->nr_events[PERF_RECORD_LOST] != 0) { 1505 ui__warning("Processed %d events and lost %d chunks!\n\n" 1506 "Check IO/CPU overload!\n\n", 1507 stats->nr_events[0], 1508 stats->nr_events[PERF_RECORD_LOST]); 1509 } 1510 1511 if (session->tool->lost_samples == perf_event__process_lost_samples) { 1512 double drop_rate; 1513 1514 drop_rate = (double)stats->total_lost_samples / 1515 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples); 1516 if (drop_rate > 0.05) { 1517 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%% samples!\n\n", 1518 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples, 1519 drop_rate * 100.0); 1520 } 1521 } 1522 1523 if (session->tool->aux == perf_event__process_aux && 1524 stats->total_aux_lost != 0) { 1525 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n", 1526 stats->total_aux_lost, 1527 stats->nr_events[PERF_RECORD_AUX]); 1528 } 1529 1530 if (stats->nr_unknown_events != 0) { 1531 ui__warning("Found %u unknown events!\n\n" 1532 "Is this an older tool processing a perf.data " 1533 "file generated by a more recent tool?\n\n" 1534 "If that is not the case, consider " 1535 "reporting to linux-kernel@vger.kernel.org.\n\n", 1536 stats->nr_unknown_events); 1537 } 1538 1539 if (stats->nr_unknown_id != 0) { 1540 ui__warning("%u samples with id not present in the header\n", 1541 stats->nr_unknown_id); 1542 } 1543 1544 if (stats->nr_invalid_chains != 0) { 1545 ui__warning("Found invalid callchains!\n\n" 1546 "%u out of %u events were discarded for this reason.\n\n" 1547 "Consider reporting to linux-kernel@vger.kernel.org.\n\n", 1548 stats->nr_invalid_chains, 1549 stats->nr_events[PERF_RECORD_SAMPLE]); 1550 } 1551 1552 if (stats->nr_unprocessable_samples != 0) { 1553 ui__warning("%u unprocessable samples recorded.\n" 1554 "Do you have a KVM guest running and not using 'perf kvm'?\n", 1555 stats->nr_unprocessable_samples); 1556 } 1557 1558 if (oe->nr_unordered_events != 0) 1559 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events); 1560 1561 events_stats__auxtrace_error_warn(stats); 1562 1563 if (stats->nr_proc_map_timeout != 0) { 1564 ui__warning("%d map information files for pre-existing threads were\n" 1565 "not processed, if there are samples for addresses they\n" 1566 "will not be resolved, you may find out which are these\n" 1567 "threads by running with -v and redirecting the output\n" 1568 "to a file.\n" 1569 "The time limit to process proc map is too short?\n" 1570 "Increase it by --proc-map-timeout\n", 1571 stats->nr_proc_map_timeout); 1572 } 1573 } 1574 1575 static int perf_session__flush_thread_stack(struct thread *thread, 1576 void *p __maybe_unused) 1577 { 1578 return thread_stack__flush(thread); 1579 } 1580 1581 static int perf_session__flush_thread_stacks(struct perf_session *session) 1582 { 1583 return machines__for_each_thread(&session->machines, 1584 perf_session__flush_thread_stack, 1585 NULL); 1586 } 1587 1588 volatile int session_done; 1589 1590 static int __perf_session__process_pipe_events(struct perf_session *session) 1591 { 1592 struct ordered_events *oe = &session->ordered_events; 1593 struct perf_tool *tool = session->tool; 1594 int fd = perf_data_file__fd(session->file); 1595 union perf_event *event; 1596 uint32_t size, cur_size = 0; 1597 void *buf = NULL; 1598 s64 skip = 0; 1599 u64 head; 1600 ssize_t err; 1601 void *p; 1602 1603 perf_tool__fill_defaults(tool); 1604 1605 head = 0; 1606 cur_size = sizeof(union perf_event); 1607 1608 buf = malloc(cur_size); 1609 if (!buf) 1610 return -errno; 1611 more: 1612 event = buf; 1613 err = readn(fd, event, sizeof(struct perf_event_header)); 1614 if (err <= 0) { 1615 if (err == 0) 1616 goto done; 1617 1618 pr_err("failed to read event header\n"); 1619 goto out_err; 1620 } 1621 1622 if (session->header.needs_swap) 1623 perf_event_header__bswap(&event->header); 1624 1625 size = event->header.size; 1626 if (size < sizeof(struct perf_event_header)) { 1627 pr_err("bad event header size\n"); 1628 goto out_err; 1629 } 1630 1631 if (size > cur_size) { 1632 void *new = realloc(buf, size); 1633 if (!new) { 1634 pr_err("failed to allocate memory to read event\n"); 1635 goto out_err; 1636 } 1637 buf = new; 1638 cur_size = size; 1639 event = buf; 1640 } 1641 p = event; 1642 p += sizeof(struct perf_event_header); 1643 1644 if (size - sizeof(struct perf_event_header)) { 1645 err = readn(fd, p, size - sizeof(struct perf_event_header)); 1646 if (err <= 0) { 1647 if (err == 0) { 1648 pr_err("unexpected end of event stream\n"); 1649 goto done; 1650 } 1651 1652 pr_err("failed to read event data\n"); 1653 goto out_err; 1654 } 1655 } 1656 1657 if ((skip = perf_session__process_event(session, event, head)) < 0) { 1658 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1659 head, event->header.size, event->header.type); 1660 err = -EINVAL; 1661 goto out_err; 1662 } 1663 1664 head += size; 1665 1666 if (skip > 0) 1667 head += skip; 1668 1669 if (!session_done()) 1670 goto more; 1671 done: 1672 /* do the final flush for ordered samples */ 1673 err = ordered_events__flush(oe, OE_FLUSH__FINAL); 1674 if (err) 1675 goto out_err; 1676 err = auxtrace__flush_events(session, tool); 1677 if (err) 1678 goto out_err; 1679 err = perf_session__flush_thread_stacks(session); 1680 out_err: 1681 free(buf); 1682 perf_session__warn_about_errors(session); 1683 ordered_events__free(&session->ordered_events); 1684 auxtrace__free_events(session); 1685 return err; 1686 } 1687 1688 static union perf_event * 1689 fetch_mmaped_event(struct perf_session *session, 1690 u64 head, size_t mmap_size, char *buf) 1691 { 1692 union perf_event *event; 1693 1694 /* 1695 * Ensure we have enough space remaining to read 1696 * the size of the event in the headers. 1697 */ 1698 if (head + sizeof(event->header) > mmap_size) 1699 return NULL; 1700 1701 event = (union perf_event *)(buf + head); 1702 1703 if (session->header.needs_swap) 1704 perf_event_header__bswap(&event->header); 1705 1706 if (head + event->header.size > mmap_size) { 1707 /* We're not fetching the event so swap back again */ 1708 if (session->header.needs_swap) 1709 perf_event_header__bswap(&event->header); 1710 return NULL; 1711 } 1712 1713 return event; 1714 } 1715 1716 /* 1717 * On 64bit we can mmap the data file in one go. No need for tiny mmap 1718 * slices. On 32bit we use 32MB. 1719 */ 1720 #if BITS_PER_LONG == 64 1721 #define MMAP_SIZE ULLONG_MAX 1722 #define NUM_MMAPS 1 1723 #else 1724 #define MMAP_SIZE (32 * 1024 * 1024ULL) 1725 #define NUM_MMAPS 128 1726 #endif 1727 1728 static int __perf_session__process_events(struct perf_session *session, 1729 u64 data_offset, u64 data_size, 1730 u64 file_size) 1731 { 1732 struct ordered_events *oe = &session->ordered_events; 1733 struct perf_tool *tool = session->tool; 1734 int fd = perf_data_file__fd(session->file); 1735 u64 head, page_offset, file_offset, file_pos, size; 1736 int err, mmap_prot, mmap_flags, map_idx = 0; 1737 size_t mmap_size; 1738 char *buf, *mmaps[NUM_MMAPS]; 1739 union perf_event *event; 1740 struct ui_progress prog; 1741 s64 skip; 1742 1743 perf_tool__fill_defaults(tool); 1744 1745 page_offset = page_size * (data_offset / page_size); 1746 file_offset = page_offset; 1747 head = data_offset - page_offset; 1748 1749 if (data_size == 0) 1750 goto out; 1751 1752 if (data_offset + data_size < file_size) 1753 file_size = data_offset + data_size; 1754 1755 ui_progress__init(&prog, file_size, "Processing events..."); 1756 1757 mmap_size = MMAP_SIZE; 1758 if (mmap_size > file_size) { 1759 mmap_size = file_size; 1760 session->one_mmap = true; 1761 } 1762 1763 memset(mmaps, 0, sizeof(mmaps)); 1764 1765 mmap_prot = PROT_READ; 1766 mmap_flags = MAP_SHARED; 1767 1768 if (session->header.needs_swap) { 1769 mmap_prot |= PROT_WRITE; 1770 mmap_flags = MAP_PRIVATE; 1771 } 1772 remap: 1773 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd, 1774 file_offset); 1775 if (buf == MAP_FAILED) { 1776 pr_err("failed to mmap file\n"); 1777 err = -errno; 1778 goto out_err; 1779 } 1780 mmaps[map_idx] = buf; 1781 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); 1782 file_pos = file_offset + head; 1783 if (session->one_mmap) { 1784 session->one_mmap_addr = buf; 1785 session->one_mmap_offset = file_offset; 1786 } 1787 1788 more: 1789 event = fetch_mmaped_event(session, head, mmap_size, buf); 1790 if (!event) { 1791 if (mmaps[map_idx]) { 1792 munmap(mmaps[map_idx], mmap_size); 1793 mmaps[map_idx] = NULL; 1794 } 1795 1796 page_offset = page_size * (head / page_size); 1797 file_offset += page_offset; 1798 head -= page_offset; 1799 goto remap; 1800 } 1801 1802 size = event->header.size; 1803 1804 if (size < sizeof(struct perf_event_header) || 1805 (skip = perf_session__process_event(session, event, file_pos)) < 0) { 1806 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1807 file_offset + head, event->header.size, 1808 event->header.type); 1809 err = -EINVAL; 1810 goto out_err; 1811 } 1812 1813 if (skip) 1814 size += skip; 1815 1816 head += size; 1817 file_pos += size; 1818 1819 ui_progress__update(&prog, size); 1820 1821 if (session_done()) 1822 goto out; 1823 1824 if (file_pos < file_size) 1825 goto more; 1826 1827 out: 1828 /* do the final flush for ordered samples */ 1829 err = ordered_events__flush(oe, OE_FLUSH__FINAL); 1830 if (err) 1831 goto out_err; 1832 err = auxtrace__flush_events(session, tool); 1833 if (err) 1834 goto out_err; 1835 err = perf_session__flush_thread_stacks(session); 1836 out_err: 1837 ui_progress__finish(); 1838 perf_session__warn_about_errors(session); 1839 /* 1840 * We may switching perf.data output, make ordered_events 1841 * reusable. 1842 */ 1843 ordered_events__reinit(&session->ordered_events); 1844 auxtrace__free_events(session); 1845 session->one_mmap = false; 1846 return err; 1847 } 1848 1849 int perf_session__process_events(struct perf_session *session) 1850 { 1851 u64 size = perf_data_file__size(session->file); 1852 int err; 1853 1854 if (perf_session__register_idle_thread(session) < 0) 1855 return -ENOMEM; 1856 1857 if (!perf_data_file__is_pipe(session->file)) 1858 err = __perf_session__process_events(session, 1859 session->header.data_offset, 1860 session->header.data_size, size); 1861 else 1862 err = __perf_session__process_pipe_events(session); 1863 1864 return err; 1865 } 1866 1867 bool perf_session__has_traces(struct perf_session *session, const char *msg) 1868 { 1869 struct perf_evsel *evsel; 1870 1871 evlist__for_each(session->evlist, evsel) { 1872 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) 1873 return true; 1874 } 1875 1876 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); 1877 return false; 1878 } 1879 1880 int maps__set_kallsyms_ref_reloc_sym(struct map **maps, 1881 const char *symbol_name, u64 addr) 1882 { 1883 char *bracket; 1884 enum map_type i; 1885 struct ref_reloc_sym *ref; 1886 1887 ref = zalloc(sizeof(struct ref_reloc_sym)); 1888 if (ref == NULL) 1889 return -ENOMEM; 1890 1891 ref->name = strdup(symbol_name); 1892 if (ref->name == NULL) { 1893 free(ref); 1894 return -ENOMEM; 1895 } 1896 1897 bracket = strchr(ref->name, ']'); 1898 if (bracket) 1899 *bracket = '\0'; 1900 1901 ref->addr = addr; 1902 1903 for (i = 0; i < MAP__NR_TYPES; ++i) { 1904 struct kmap *kmap = map__kmap(maps[i]); 1905 1906 if (!kmap) 1907 continue; 1908 kmap->ref_reloc_sym = ref; 1909 } 1910 1911 return 0; 1912 } 1913 1914 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp) 1915 { 1916 return machines__fprintf_dsos(&session->machines, fp); 1917 } 1918 1919 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp, 1920 bool (skip)(struct dso *dso, int parm), int parm) 1921 { 1922 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm); 1923 } 1924 1925 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) 1926 { 1927 size_t ret; 1928 const char *msg = ""; 1929 1930 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE)) 1931 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)"; 1932 1933 ret = fprintf(fp, "\nAggregated stats:%s\n", msg); 1934 1935 ret += events_stats__fprintf(&session->evlist->stats, fp); 1936 return ret; 1937 } 1938 1939 size_t perf_session__fprintf(struct perf_session *session, FILE *fp) 1940 { 1941 /* 1942 * FIXME: Here we have to actually print all the machines in this 1943 * session, not just the host... 1944 */ 1945 return machine__fprintf(&session->machines.host, fp); 1946 } 1947 1948 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, 1949 unsigned int type) 1950 { 1951 struct perf_evsel *pos; 1952 1953 evlist__for_each(session->evlist, pos) { 1954 if (pos->attr.type == type) 1955 return pos; 1956 } 1957 return NULL; 1958 } 1959 1960 int perf_session__cpu_bitmap(struct perf_session *session, 1961 const char *cpu_list, unsigned long *cpu_bitmap) 1962 { 1963 int i, err = -1; 1964 struct cpu_map *map; 1965 1966 for (i = 0; i < PERF_TYPE_MAX; ++i) { 1967 struct perf_evsel *evsel; 1968 1969 evsel = perf_session__find_first_evtype(session, i); 1970 if (!evsel) 1971 continue; 1972 1973 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { 1974 pr_err("File does not contain CPU events. " 1975 "Remove -c option to proceed.\n"); 1976 return -1; 1977 } 1978 } 1979 1980 map = cpu_map__new(cpu_list); 1981 if (map == NULL) { 1982 pr_err("Invalid cpu_list\n"); 1983 return -1; 1984 } 1985 1986 for (i = 0; i < map->nr; i++) { 1987 int cpu = map->map[i]; 1988 1989 if (cpu >= MAX_NR_CPUS) { 1990 pr_err("Requested CPU %d too large. " 1991 "Consider raising MAX_NR_CPUS\n", cpu); 1992 goto out_delete_map; 1993 } 1994 1995 set_bit(cpu, cpu_bitmap); 1996 } 1997 1998 err = 0; 1999 2000 out_delete_map: 2001 cpu_map__put(map); 2002 return err; 2003 } 2004 2005 void perf_session__fprintf_info(struct perf_session *session, FILE *fp, 2006 bool full) 2007 { 2008 struct stat st; 2009 int fd, ret; 2010 2011 if (session == NULL || fp == NULL) 2012 return; 2013 2014 fd = perf_data_file__fd(session->file); 2015 2016 ret = fstat(fd, &st); 2017 if (ret == -1) 2018 return; 2019 2020 fprintf(fp, "# ========\n"); 2021 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); 2022 perf_header__fprintf_info(session, fp, full); 2023 fprintf(fp, "# ========\n#\n"); 2024 } 2025 2026 2027 int __perf_session__set_tracepoints_handlers(struct perf_session *session, 2028 const struct perf_evsel_str_handler *assocs, 2029 size_t nr_assocs) 2030 { 2031 struct perf_evsel *evsel; 2032 size_t i; 2033 int err; 2034 2035 for (i = 0; i < nr_assocs; i++) { 2036 /* 2037 * Adding a handler for an event not in the session, 2038 * just ignore it. 2039 */ 2040 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name); 2041 if (evsel == NULL) 2042 continue; 2043 2044 err = -EEXIST; 2045 if (evsel->handler != NULL) 2046 goto out; 2047 evsel->handler = assocs[i].handler; 2048 } 2049 2050 err = 0; 2051 out: 2052 return err; 2053 } 2054 2055 int perf_event__process_id_index(struct perf_tool *tool __maybe_unused, 2056 union perf_event *event, 2057 struct perf_session *session) 2058 { 2059 struct perf_evlist *evlist = session->evlist; 2060 struct id_index_event *ie = &event->id_index; 2061 size_t i, nr, max_nr; 2062 2063 max_nr = (ie->header.size - sizeof(struct id_index_event)) / 2064 sizeof(struct id_index_entry); 2065 nr = ie->nr; 2066 if (nr > max_nr) 2067 return -EINVAL; 2068 2069 if (dump_trace) 2070 fprintf(stdout, " nr: %zu\n", nr); 2071 2072 for (i = 0; i < nr; i++) { 2073 struct id_index_entry *e = &ie->entries[i]; 2074 struct perf_sample_id *sid; 2075 2076 if (dump_trace) { 2077 fprintf(stdout, " ... id: %"PRIu64, e->id); 2078 fprintf(stdout, " idx: %"PRIu64, e->idx); 2079 fprintf(stdout, " cpu: %"PRId64, e->cpu); 2080 fprintf(stdout, " tid: %"PRId64"\n", e->tid); 2081 } 2082 2083 sid = perf_evlist__id2sid(evlist, e->id); 2084 if (!sid) 2085 return -ENOENT; 2086 sid->idx = e->idx; 2087 sid->cpu = e->cpu; 2088 sid->tid = e->tid; 2089 } 2090 return 0; 2091 } 2092 2093 int perf_event__synthesize_id_index(struct perf_tool *tool, 2094 perf_event__handler_t process, 2095 struct perf_evlist *evlist, 2096 struct machine *machine) 2097 { 2098 union perf_event *ev; 2099 struct perf_evsel *evsel; 2100 size_t nr = 0, i = 0, sz, max_nr, n; 2101 int err; 2102 2103 pr_debug2("Synthesizing id index\n"); 2104 2105 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) / 2106 sizeof(struct id_index_entry); 2107 2108 evlist__for_each(evlist, evsel) 2109 nr += evsel->ids; 2110 2111 n = nr > max_nr ? max_nr : nr; 2112 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry); 2113 ev = zalloc(sz); 2114 if (!ev) 2115 return -ENOMEM; 2116 2117 ev->id_index.header.type = PERF_RECORD_ID_INDEX; 2118 ev->id_index.header.size = sz; 2119 ev->id_index.nr = n; 2120 2121 evlist__for_each(evlist, evsel) { 2122 u32 j; 2123 2124 for (j = 0; j < evsel->ids; j++) { 2125 struct id_index_entry *e; 2126 struct perf_sample_id *sid; 2127 2128 if (i >= n) { 2129 err = process(tool, ev, NULL, machine); 2130 if (err) 2131 goto out_err; 2132 nr -= n; 2133 i = 0; 2134 } 2135 2136 e = &ev->id_index.entries[i++]; 2137 2138 e->id = evsel->id[j]; 2139 2140 sid = perf_evlist__id2sid(evlist, e->id); 2141 if (!sid) { 2142 free(ev); 2143 return -ENOENT; 2144 } 2145 2146 e->idx = sid->idx; 2147 e->cpu = sid->cpu; 2148 e->tid = sid->tid; 2149 } 2150 } 2151 2152 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry); 2153 ev->id_index.header.size = sz; 2154 ev->id_index.nr = nr; 2155 2156 err = process(tool, ev, NULL, machine); 2157 out_err: 2158 free(ev); 2159 2160 return err; 2161 } 2162