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_entry(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 if (session == NULL) 182 return; 183 auxtrace__free(session); 184 auxtrace_index__free(&session->auxtrace_index); 185 perf_session__destroy_kernel_maps(session); 186 perf_session__delete_threads(session); 187 perf_env__exit(&session->header.env); 188 machines__exit(&session->machines); 189 if (session->file) 190 perf_data_file__close(session->file); 191 free(session); 192 } 193 194 static int process_event_synth_tracing_data_stub(struct perf_tool *tool 195 __maybe_unused, 196 union perf_event *event 197 __maybe_unused, 198 struct perf_session *session 199 __maybe_unused) 200 { 201 dump_printf(": unhandled!\n"); 202 return 0; 203 } 204 205 static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused, 206 union perf_event *event __maybe_unused, 207 struct perf_evlist **pevlist 208 __maybe_unused) 209 { 210 dump_printf(": unhandled!\n"); 211 return 0; 212 } 213 214 static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused, 215 union perf_event *event __maybe_unused, 216 struct perf_evlist **pevlist 217 __maybe_unused) 218 { 219 if (dump_trace) 220 perf_event__fprintf_event_update(event, stdout); 221 222 dump_printf(": unhandled!\n"); 223 return 0; 224 } 225 226 static int process_event_sample_stub(struct perf_tool *tool __maybe_unused, 227 union perf_event *event __maybe_unused, 228 struct perf_sample *sample __maybe_unused, 229 struct perf_evsel *evsel __maybe_unused, 230 struct machine *machine __maybe_unused) 231 { 232 dump_printf(": unhandled!\n"); 233 return 0; 234 } 235 236 static int process_event_stub(struct perf_tool *tool __maybe_unused, 237 union perf_event *event __maybe_unused, 238 struct perf_sample *sample __maybe_unused, 239 struct machine *machine __maybe_unused) 240 { 241 dump_printf(": unhandled!\n"); 242 return 0; 243 } 244 245 static int process_finished_round_stub(struct perf_tool *tool __maybe_unused, 246 union perf_event *event __maybe_unused, 247 struct ordered_events *oe __maybe_unused) 248 { 249 dump_printf(": unhandled!\n"); 250 return 0; 251 } 252 253 static int process_finished_round(struct perf_tool *tool, 254 union perf_event *event, 255 struct ordered_events *oe); 256 257 static int skipn(int fd, off_t n) 258 { 259 char buf[4096]; 260 ssize_t ret; 261 262 while (n > 0) { 263 ret = read(fd, buf, min(n, (off_t)sizeof(buf))); 264 if (ret <= 0) 265 return ret; 266 n -= ret; 267 } 268 269 return 0; 270 } 271 272 static s64 process_event_auxtrace_stub(struct perf_tool *tool __maybe_unused, 273 union perf_event *event, 274 struct perf_session *session 275 __maybe_unused) 276 { 277 dump_printf(": unhandled!\n"); 278 if (perf_data_file__is_pipe(session->file)) 279 skipn(perf_data_file__fd(session->file), event->auxtrace.size); 280 return event->auxtrace.size; 281 } 282 283 static int process_event_op2_stub(struct perf_tool *tool __maybe_unused, 284 union perf_event *event __maybe_unused, 285 struct perf_session *session __maybe_unused) 286 { 287 dump_printf(": unhandled!\n"); 288 return 0; 289 } 290 291 292 static 293 int process_event_thread_map_stub(struct perf_tool *tool __maybe_unused, 294 union perf_event *event __maybe_unused, 295 struct perf_session *session __maybe_unused) 296 { 297 if (dump_trace) 298 perf_event__fprintf_thread_map(event, stdout); 299 300 dump_printf(": unhandled!\n"); 301 return 0; 302 } 303 304 static 305 int process_event_cpu_map_stub(struct perf_tool *tool __maybe_unused, 306 union perf_event *event __maybe_unused, 307 struct perf_session *session __maybe_unused) 308 { 309 if (dump_trace) 310 perf_event__fprintf_cpu_map(event, stdout); 311 312 dump_printf(": unhandled!\n"); 313 return 0; 314 } 315 316 static 317 int process_event_stat_config_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_stat_config(event, stdout); 323 324 dump_printf(": unhandled!\n"); 325 return 0; 326 } 327 328 static int process_stat_stub(struct perf_tool *tool __maybe_unused, 329 union perf_event *event __maybe_unused, 330 struct perf_session *perf_session 331 __maybe_unused) 332 { 333 if (dump_trace) 334 perf_event__fprintf_stat(event, stdout); 335 336 dump_printf(": unhandled!\n"); 337 return 0; 338 } 339 340 static int process_stat_round_stub(struct perf_tool *tool __maybe_unused, 341 union perf_event *event __maybe_unused, 342 struct perf_session *perf_session 343 __maybe_unused) 344 { 345 if (dump_trace) 346 perf_event__fprintf_stat_round(event, stdout); 347 348 dump_printf(": unhandled!\n"); 349 return 0; 350 } 351 352 void perf_tool__fill_defaults(struct perf_tool *tool) 353 { 354 if (tool->sample == NULL) 355 tool->sample = process_event_sample_stub; 356 if (tool->mmap == NULL) 357 tool->mmap = process_event_stub; 358 if (tool->mmap2 == NULL) 359 tool->mmap2 = process_event_stub; 360 if (tool->comm == NULL) 361 tool->comm = process_event_stub; 362 if (tool->fork == NULL) 363 tool->fork = process_event_stub; 364 if (tool->exit == NULL) 365 tool->exit = process_event_stub; 366 if (tool->lost == NULL) 367 tool->lost = perf_event__process_lost; 368 if (tool->lost_samples == NULL) 369 tool->lost_samples = perf_event__process_lost_samples; 370 if (tool->aux == NULL) 371 tool->aux = perf_event__process_aux; 372 if (tool->itrace_start == NULL) 373 tool->itrace_start = perf_event__process_itrace_start; 374 if (tool->context_switch == NULL) 375 tool->context_switch = perf_event__process_switch; 376 if (tool->read == NULL) 377 tool->read = process_event_sample_stub; 378 if (tool->throttle == NULL) 379 tool->throttle = process_event_stub; 380 if (tool->unthrottle == NULL) 381 tool->unthrottle = process_event_stub; 382 if (tool->attr == NULL) 383 tool->attr = process_event_synth_attr_stub; 384 if (tool->event_update == NULL) 385 tool->event_update = process_event_synth_event_update_stub; 386 if (tool->tracing_data == NULL) 387 tool->tracing_data = process_event_synth_tracing_data_stub; 388 if (tool->build_id == NULL) 389 tool->build_id = process_event_op2_stub; 390 if (tool->finished_round == NULL) { 391 if (tool->ordered_events) 392 tool->finished_round = process_finished_round; 393 else 394 tool->finished_round = process_finished_round_stub; 395 } 396 if (tool->id_index == NULL) 397 tool->id_index = process_event_op2_stub; 398 if (tool->auxtrace_info == NULL) 399 tool->auxtrace_info = process_event_op2_stub; 400 if (tool->auxtrace == NULL) 401 tool->auxtrace = process_event_auxtrace_stub; 402 if (tool->auxtrace_error == NULL) 403 tool->auxtrace_error = process_event_op2_stub; 404 if (tool->thread_map == NULL) 405 tool->thread_map = process_event_thread_map_stub; 406 if (tool->cpu_map == NULL) 407 tool->cpu_map = process_event_cpu_map_stub; 408 if (tool->stat_config == NULL) 409 tool->stat_config = process_event_stat_config_stub; 410 if (tool->stat == NULL) 411 tool->stat = process_stat_stub; 412 if (tool->stat_round == NULL) 413 tool->stat_round = process_stat_round_stub; 414 if (tool->time_conv == NULL) 415 tool->time_conv = process_event_op2_stub; 416 } 417 418 static void swap_sample_id_all(union perf_event *event, void *data) 419 { 420 void *end = (void *) event + event->header.size; 421 int size = end - data; 422 423 BUG_ON(size % sizeof(u64)); 424 mem_bswap_64(data, size); 425 } 426 427 static void perf_event__all64_swap(union perf_event *event, 428 bool sample_id_all __maybe_unused) 429 { 430 struct perf_event_header *hdr = &event->header; 431 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); 432 } 433 434 static void perf_event__comm_swap(union perf_event *event, bool sample_id_all) 435 { 436 event->comm.pid = bswap_32(event->comm.pid); 437 event->comm.tid = bswap_32(event->comm.tid); 438 439 if (sample_id_all) { 440 void *data = &event->comm.comm; 441 442 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 443 swap_sample_id_all(event, data); 444 } 445 } 446 447 static void perf_event__mmap_swap(union perf_event *event, 448 bool sample_id_all) 449 { 450 event->mmap.pid = bswap_32(event->mmap.pid); 451 event->mmap.tid = bswap_32(event->mmap.tid); 452 event->mmap.start = bswap_64(event->mmap.start); 453 event->mmap.len = bswap_64(event->mmap.len); 454 event->mmap.pgoff = bswap_64(event->mmap.pgoff); 455 456 if (sample_id_all) { 457 void *data = &event->mmap.filename; 458 459 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 460 swap_sample_id_all(event, data); 461 } 462 } 463 464 static void perf_event__mmap2_swap(union perf_event *event, 465 bool sample_id_all) 466 { 467 event->mmap2.pid = bswap_32(event->mmap2.pid); 468 event->mmap2.tid = bswap_32(event->mmap2.tid); 469 event->mmap2.start = bswap_64(event->mmap2.start); 470 event->mmap2.len = bswap_64(event->mmap2.len); 471 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff); 472 event->mmap2.maj = bswap_32(event->mmap2.maj); 473 event->mmap2.min = bswap_32(event->mmap2.min); 474 event->mmap2.ino = bswap_64(event->mmap2.ino); 475 476 if (sample_id_all) { 477 void *data = &event->mmap2.filename; 478 479 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 480 swap_sample_id_all(event, data); 481 } 482 } 483 static void perf_event__task_swap(union perf_event *event, bool sample_id_all) 484 { 485 event->fork.pid = bswap_32(event->fork.pid); 486 event->fork.tid = bswap_32(event->fork.tid); 487 event->fork.ppid = bswap_32(event->fork.ppid); 488 event->fork.ptid = bswap_32(event->fork.ptid); 489 event->fork.time = bswap_64(event->fork.time); 490 491 if (sample_id_all) 492 swap_sample_id_all(event, &event->fork + 1); 493 } 494 495 static void perf_event__read_swap(union perf_event *event, bool sample_id_all) 496 { 497 event->read.pid = bswap_32(event->read.pid); 498 event->read.tid = bswap_32(event->read.tid); 499 event->read.value = bswap_64(event->read.value); 500 event->read.time_enabled = bswap_64(event->read.time_enabled); 501 event->read.time_running = bswap_64(event->read.time_running); 502 event->read.id = bswap_64(event->read.id); 503 504 if (sample_id_all) 505 swap_sample_id_all(event, &event->read + 1); 506 } 507 508 static void perf_event__aux_swap(union perf_event *event, bool sample_id_all) 509 { 510 event->aux.aux_offset = bswap_64(event->aux.aux_offset); 511 event->aux.aux_size = bswap_64(event->aux.aux_size); 512 event->aux.flags = bswap_64(event->aux.flags); 513 514 if (sample_id_all) 515 swap_sample_id_all(event, &event->aux + 1); 516 } 517 518 static void perf_event__itrace_start_swap(union perf_event *event, 519 bool sample_id_all) 520 { 521 event->itrace_start.pid = bswap_32(event->itrace_start.pid); 522 event->itrace_start.tid = bswap_32(event->itrace_start.tid); 523 524 if (sample_id_all) 525 swap_sample_id_all(event, &event->itrace_start + 1); 526 } 527 528 static void perf_event__switch_swap(union perf_event *event, bool sample_id_all) 529 { 530 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) { 531 event->context_switch.next_prev_pid = 532 bswap_32(event->context_switch.next_prev_pid); 533 event->context_switch.next_prev_tid = 534 bswap_32(event->context_switch.next_prev_tid); 535 } 536 537 if (sample_id_all) 538 swap_sample_id_all(event, &event->context_switch + 1); 539 } 540 541 static void perf_event__throttle_swap(union perf_event *event, 542 bool sample_id_all) 543 { 544 event->throttle.time = bswap_64(event->throttle.time); 545 event->throttle.id = bswap_64(event->throttle.id); 546 event->throttle.stream_id = bswap_64(event->throttle.stream_id); 547 548 if (sample_id_all) 549 swap_sample_id_all(event, &event->throttle + 1); 550 } 551 552 static u8 revbyte(u8 b) 553 { 554 int rev = (b >> 4) | ((b & 0xf) << 4); 555 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2); 556 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1); 557 return (u8) rev; 558 } 559 560 /* 561 * XXX this is hack in attempt to carry flags bitfield 562 * through endian village. ABI says: 563 * 564 * Bit-fields are allocated from right to left (least to most significant) 565 * on little-endian implementations and from left to right (most to least 566 * significant) on big-endian implementations. 567 * 568 * The above seems to be byte specific, so we need to reverse each 569 * byte of the bitfield. 'Internet' also says this might be implementation 570 * specific and we probably need proper fix and carry perf_event_attr 571 * bitfield flags in separate data file FEAT_ section. Thought this seems 572 * to work for now. 573 */ 574 static void swap_bitfield(u8 *p, unsigned len) 575 { 576 unsigned i; 577 578 for (i = 0; i < len; i++) { 579 *p = revbyte(*p); 580 p++; 581 } 582 } 583 584 /* exported for swapping attributes in file header */ 585 void perf_event__attr_swap(struct perf_event_attr *attr) 586 { 587 attr->type = bswap_32(attr->type); 588 attr->size = bswap_32(attr->size); 589 590 #define bswap_safe(f, n) \ 591 (attr->size > (offsetof(struct perf_event_attr, f) + \ 592 sizeof(attr->f) * (n))) 593 #define bswap_field(f, sz) \ 594 do { \ 595 if (bswap_safe(f, 0)) \ 596 attr->f = bswap_##sz(attr->f); \ 597 } while(0) 598 #define bswap_field_16(f) bswap_field(f, 16) 599 #define bswap_field_32(f) bswap_field(f, 32) 600 #define bswap_field_64(f) bswap_field(f, 64) 601 602 bswap_field_64(config); 603 bswap_field_64(sample_period); 604 bswap_field_64(sample_type); 605 bswap_field_64(read_format); 606 bswap_field_32(wakeup_events); 607 bswap_field_32(bp_type); 608 bswap_field_64(bp_addr); 609 bswap_field_64(bp_len); 610 bswap_field_64(branch_sample_type); 611 bswap_field_64(sample_regs_user); 612 bswap_field_32(sample_stack_user); 613 bswap_field_32(aux_watermark); 614 bswap_field_16(sample_max_stack); 615 616 /* 617 * After read_format are bitfields. Check read_format because 618 * we are unable to use offsetof on bitfield. 619 */ 620 if (bswap_safe(read_format, 1)) 621 swap_bitfield((u8 *) (&attr->read_format + 1), 622 sizeof(u64)); 623 #undef bswap_field_64 624 #undef bswap_field_32 625 #undef bswap_field 626 #undef bswap_safe 627 } 628 629 static void perf_event__hdr_attr_swap(union perf_event *event, 630 bool sample_id_all __maybe_unused) 631 { 632 size_t size; 633 634 perf_event__attr_swap(&event->attr.attr); 635 636 size = event->header.size; 637 size -= (void *)&event->attr.id - (void *)event; 638 mem_bswap_64(event->attr.id, size); 639 } 640 641 static void perf_event__event_update_swap(union perf_event *event, 642 bool sample_id_all __maybe_unused) 643 { 644 event->event_update.type = bswap_64(event->event_update.type); 645 event->event_update.id = bswap_64(event->event_update.id); 646 } 647 648 static void perf_event__event_type_swap(union perf_event *event, 649 bool sample_id_all __maybe_unused) 650 { 651 event->event_type.event_type.event_id = 652 bswap_64(event->event_type.event_type.event_id); 653 } 654 655 static void perf_event__tracing_data_swap(union perf_event *event, 656 bool sample_id_all __maybe_unused) 657 { 658 event->tracing_data.size = bswap_32(event->tracing_data.size); 659 } 660 661 static void perf_event__auxtrace_info_swap(union perf_event *event, 662 bool sample_id_all __maybe_unused) 663 { 664 size_t size; 665 666 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type); 667 668 size = event->header.size; 669 size -= (void *)&event->auxtrace_info.priv - (void *)event; 670 mem_bswap_64(event->auxtrace_info.priv, size); 671 } 672 673 static void perf_event__auxtrace_swap(union perf_event *event, 674 bool sample_id_all __maybe_unused) 675 { 676 event->auxtrace.size = bswap_64(event->auxtrace.size); 677 event->auxtrace.offset = bswap_64(event->auxtrace.offset); 678 event->auxtrace.reference = bswap_64(event->auxtrace.reference); 679 event->auxtrace.idx = bswap_32(event->auxtrace.idx); 680 event->auxtrace.tid = bswap_32(event->auxtrace.tid); 681 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu); 682 } 683 684 static void perf_event__auxtrace_error_swap(union perf_event *event, 685 bool sample_id_all __maybe_unused) 686 { 687 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type); 688 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code); 689 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu); 690 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid); 691 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid); 692 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip); 693 } 694 695 static void perf_event__thread_map_swap(union perf_event *event, 696 bool sample_id_all __maybe_unused) 697 { 698 unsigned i; 699 700 event->thread_map.nr = bswap_64(event->thread_map.nr); 701 702 for (i = 0; i < event->thread_map.nr; i++) 703 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid); 704 } 705 706 static void perf_event__cpu_map_swap(union perf_event *event, 707 bool sample_id_all __maybe_unused) 708 { 709 struct cpu_map_data *data = &event->cpu_map.data; 710 struct cpu_map_entries *cpus; 711 struct cpu_map_mask *mask; 712 unsigned i; 713 714 data->type = bswap_64(data->type); 715 716 switch (data->type) { 717 case PERF_CPU_MAP__CPUS: 718 cpus = (struct cpu_map_entries *)data->data; 719 720 cpus->nr = bswap_16(cpus->nr); 721 722 for (i = 0; i < cpus->nr; i++) 723 cpus->cpu[i] = bswap_16(cpus->cpu[i]); 724 break; 725 case PERF_CPU_MAP__MASK: 726 mask = (struct cpu_map_mask *) data->data; 727 728 mask->nr = bswap_16(mask->nr); 729 mask->long_size = bswap_16(mask->long_size); 730 731 switch (mask->long_size) { 732 case 4: mem_bswap_32(&mask->mask, mask->nr); break; 733 case 8: mem_bswap_64(&mask->mask, mask->nr); break; 734 default: 735 pr_err("cpu_map swap: unsupported long size\n"); 736 } 737 default: 738 break; 739 } 740 } 741 742 static void perf_event__stat_config_swap(union perf_event *event, 743 bool sample_id_all __maybe_unused) 744 { 745 u64 size; 746 747 size = event->stat_config.nr * sizeof(event->stat_config.data[0]); 748 size += 1; /* nr item itself */ 749 mem_bswap_64(&event->stat_config.nr, size); 750 } 751 752 static void perf_event__stat_swap(union perf_event *event, 753 bool sample_id_all __maybe_unused) 754 { 755 event->stat.id = bswap_64(event->stat.id); 756 event->stat.thread = bswap_32(event->stat.thread); 757 event->stat.cpu = bswap_32(event->stat.cpu); 758 event->stat.val = bswap_64(event->stat.val); 759 event->stat.ena = bswap_64(event->stat.ena); 760 event->stat.run = bswap_64(event->stat.run); 761 } 762 763 static void perf_event__stat_round_swap(union perf_event *event, 764 bool sample_id_all __maybe_unused) 765 { 766 event->stat_round.type = bswap_64(event->stat_round.type); 767 event->stat_round.time = bswap_64(event->stat_round.time); 768 } 769 770 typedef void (*perf_event__swap_op)(union perf_event *event, 771 bool sample_id_all); 772 773 static perf_event__swap_op perf_event__swap_ops[] = { 774 [PERF_RECORD_MMAP] = perf_event__mmap_swap, 775 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap, 776 [PERF_RECORD_COMM] = perf_event__comm_swap, 777 [PERF_RECORD_FORK] = perf_event__task_swap, 778 [PERF_RECORD_EXIT] = perf_event__task_swap, 779 [PERF_RECORD_LOST] = perf_event__all64_swap, 780 [PERF_RECORD_READ] = perf_event__read_swap, 781 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap, 782 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap, 783 [PERF_RECORD_SAMPLE] = perf_event__all64_swap, 784 [PERF_RECORD_AUX] = perf_event__aux_swap, 785 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap, 786 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap, 787 [PERF_RECORD_SWITCH] = perf_event__switch_swap, 788 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap, 789 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, 790 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, 791 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, 792 [PERF_RECORD_HEADER_BUILD_ID] = NULL, 793 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap, 794 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap, 795 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap, 796 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap, 797 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap, 798 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap, 799 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap, 800 [PERF_RECORD_STAT] = perf_event__stat_swap, 801 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap, 802 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap, 803 [PERF_RECORD_TIME_CONV] = perf_event__all64_swap, 804 [PERF_RECORD_HEADER_MAX] = NULL, 805 }; 806 807 /* 808 * When perf record finishes a pass on every buffers, it records this pseudo 809 * event. 810 * We record the max timestamp t found in the pass n. 811 * Assuming these timestamps are monotonic across cpus, we know that if 812 * a buffer still has events with timestamps below t, they will be all 813 * available and then read in the pass n + 1. 814 * Hence when we start to read the pass n + 2, we can safely flush every 815 * events with timestamps below t. 816 * 817 * ============ PASS n ================= 818 * CPU 0 | CPU 1 819 * | 820 * cnt1 timestamps | cnt2 timestamps 821 * 1 | 2 822 * 2 | 3 823 * - | 4 <--- max recorded 824 * 825 * ============ PASS n + 1 ============== 826 * CPU 0 | CPU 1 827 * | 828 * cnt1 timestamps | cnt2 timestamps 829 * 3 | 5 830 * 4 | 6 831 * 5 | 7 <---- max recorded 832 * 833 * Flush every events below timestamp 4 834 * 835 * ============ PASS n + 2 ============== 836 * CPU 0 | CPU 1 837 * | 838 * cnt1 timestamps | cnt2 timestamps 839 * 6 | 8 840 * 7 | 9 841 * - | 10 842 * 843 * Flush every events below timestamp 7 844 * etc... 845 */ 846 static int process_finished_round(struct perf_tool *tool __maybe_unused, 847 union perf_event *event __maybe_unused, 848 struct ordered_events *oe) 849 { 850 if (dump_trace) 851 fprintf(stdout, "\n"); 852 return ordered_events__flush(oe, OE_FLUSH__ROUND); 853 } 854 855 int perf_session__queue_event(struct perf_session *s, union perf_event *event, 856 struct perf_sample *sample, u64 file_offset) 857 { 858 return ordered_events__queue(&s->ordered_events, event, sample, file_offset); 859 } 860 861 static void callchain__lbr_callstack_printf(struct perf_sample *sample) 862 { 863 struct ip_callchain *callchain = sample->callchain; 864 struct branch_stack *lbr_stack = sample->branch_stack; 865 u64 kernel_callchain_nr = callchain->nr; 866 unsigned int i; 867 868 for (i = 0; i < kernel_callchain_nr; i++) { 869 if (callchain->ips[i] == PERF_CONTEXT_USER) 870 break; 871 } 872 873 if ((i != kernel_callchain_nr) && lbr_stack->nr) { 874 u64 total_nr; 875 /* 876 * LBR callstack can only get user call chain, 877 * i is kernel call chain number, 878 * 1 is PERF_CONTEXT_USER. 879 * 880 * The user call chain is stored in LBR registers. 881 * LBR are pair registers. The caller is stored 882 * in "from" register, while the callee is stored 883 * in "to" register. 884 * For example, there is a call stack 885 * "A"->"B"->"C"->"D". 886 * The LBR registers will recorde like 887 * "C"->"D", "B"->"C", "A"->"B". 888 * So only the first "to" register and all "from" 889 * registers are needed to construct the whole stack. 890 */ 891 total_nr = i + 1 + lbr_stack->nr + 1; 892 kernel_callchain_nr = i + 1; 893 894 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr); 895 896 for (i = 0; i < kernel_callchain_nr; i++) 897 printf("..... %2d: %016" PRIx64 "\n", 898 i, callchain->ips[i]); 899 900 printf("..... %2d: %016" PRIx64 "\n", 901 (int)(kernel_callchain_nr), lbr_stack->entries[0].to); 902 for (i = 0; i < lbr_stack->nr; i++) 903 printf("..... %2d: %016" PRIx64 "\n", 904 (int)(i + kernel_callchain_nr + 1), lbr_stack->entries[i].from); 905 } 906 } 907 908 static void callchain__printf(struct perf_evsel *evsel, 909 struct perf_sample *sample) 910 { 911 unsigned int i; 912 struct ip_callchain *callchain = sample->callchain; 913 914 if (perf_evsel__has_branch_callstack(evsel)) 915 callchain__lbr_callstack_printf(sample); 916 917 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr); 918 919 for (i = 0; i < callchain->nr; i++) 920 printf("..... %2d: %016" PRIx64 "\n", 921 i, callchain->ips[i]); 922 } 923 924 static void branch_stack__printf(struct perf_sample *sample) 925 { 926 uint64_t i; 927 928 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr); 929 930 for (i = 0; i < sample->branch_stack->nr; i++) { 931 struct branch_entry *e = &sample->branch_stack->entries[i]; 932 933 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x\n", 934 i, e->from, e->to, 935 e->flags.cycles, 936 e->flags.mispred ? "M" : " ", 937 e->flags.predicted ? "P" : " ", 938 e->flags.abort ? "A" : " ", 939 e->flags.in_tx ? "T" : " ", 940 (unsigned)e->flags.reserved); 941 } 942 } 943 944 static void regs_dump__printf(u64 mask, u64 *regs) 945 { 946 unsigned rid, i = 0; 947 948 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) { 949 u64 val = regs[i++]; 950 951 printf(".... %-5s 0x%" PRIx64 "\n", 952 perf_reg_name(rid), val); 953 } 954 } 955 956 static const char *regs_abi[] = { 957 [PERF_SAMPLE_REGS_ABI_NONE] = "none", 958 [PERF_SAMPLE_REGS_ABI_32] = "32-bit", 959 [PERF_SAMPLE_REGS_ABI_64] = "64-bit", 960 }; 961 962 static inline const char *regs_dump_abi(struct regs_dump *d) 963 { 964 if (d->abi > PERF_SAMPLE_REGS_ABI_64) 965 return "unknown"; 966 967 return regs_abi[d->abi]; 968 } 969 970 static void regs__printf(const char *type, struct regs_dump *regs) 971 { 972 u64 mask = regs->mask; 973 974 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n", 975 type, 976 mask, 977 regs_dump_abi(regs)); 978 979 regs_dump__printf(mask, regs->regs); 980 } 981 982 static void regs_user__printf(struct perf_sample *sample) 983 { 984 struct regs_dump *user_regs = &sample->user_regs; 985 986 if (user_regs->regs) 987 regs__printf("user", user_regs); 988 } 989 990 static void regs_intr__printf(struct perf_sample *sample) 991 { 992 struct regs_dump *intr_regs = &sample->intr_regs; 993 994 if (intr_regs->regs) 995 regs__printf("intr", intr_regs); 996 } 997 998 static void stack_user__printf(struct stack_dump *dump) 999 { 1000 printf("... ustack: size %" PRIu64 ", offset 0x%x\n", 1001 dump->size, dump->offset); 1002 } 1003 1004 static void perf_evlist__print_tstamp(struct perf_evlist *evlist, 1005 union perf_event *event, 1006 struct perf_sample *sample) 1007 { 1008 u64 sample_type = __perf_evlist__combined_sample_type(evlist); 1009 1010 if (event->header.type != PERF_RECORD_SAMPLE && 1011 !perf_evlist__sample_id_all(evlist)) { 1012 fputs("-1 -1 ", stdout); 1013 return; 1014 } 1015 1016 if ((sample_type & PERF_SAMPLE_CPU)) 1017 printf("%u ", sample->cpu); 1018 1019 if (sample_type & PERF_SAMPLE_TIME) 1020 printf("%" PRIu64 " ", sample->time); 1021 } 1022 1023 static void sample_read__printf(struct perf_sample *sample, u64 read_format) 1024 { 1025 printf("... sample_read:\n"); 1026 1027 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 1028 printf("...... time enabled %016" PRIx64 "\n", 1029 sample->read.time_enabled); 1030 1031 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 1032 printf("...... time running %016" PRIx64 "\n", 1033 sample->read.time_running); 1034 1035 if (read_format & PERF_FORMAT_GROUP) { 1036 u64 i; 1037 1038 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr); 1039 1040 for (i = 0; i < sample->read.group.nr; i++) { 1041 struct sample_read_value *value; 1042 1043 value = &sample->read.group.values[i]; 1044 printf("..... id %016" PRIx64 1045 ", value %016" PRIx64 "\n", 1046 value->id, value->value); 1047 } 1048 } else 1049 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n", 1050 sample->read.one.id, sample->read.one.value); 1051 } 1052 1053 static void dump_event(struct perf_evlist *evlist, union perf_event *event, 1054 u64 file_offset, struct perf_sample *sample) 1055 { 1056 if (!dump_trace) 1057 return; 1058 1059 printf("\n%#" PRIx64 " [%#x]: event: %d\n", 1060 file_offset, event->header.size, event->header.type); 1061 1062 trace_event(event); 1063 1064 if (sample) 1065 perf_evlist__print_tstamp(evlist, event, sample); 1066 1067 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, 1068 event->header.size, perf_event__name(event->header.type)); 1069 } 1070 1071 static void dump_sample(struct perf_evsel *evsel, union perf_event *event, 1072 struct perf_sample *sample) 1073 { 1074 u64 sample_type; 1075 1076 if (!dump_trace) 1077 return; 1078 1079 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", 1080 event->header.misc, sample->pid, sample->tid, sample->ip, 1081 sample->period, sample->addr); 1082 1083 sample_type = evsel->attr.sample_type; 1084 1085 if (sample_type & PERF_SAMPLE_CALLCHAIN) 1086 callchain__printf(evsel, sample); 1087 1088 if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !perf_evsel__has_branch_callstack(evsel)) 1089 branch_stack__printf(sample); 1090 1091 if (sample_type & PERF_SAMPLE_REGS_USER) 1092 regs_user__printf(sample); 1093 1094 if (sample_type & PERF_SAMPLE_REGS_INTR) 1095 regs_intr__printf(sample); 1096 1097 if (sample_type & PERF_SAMPLE_STACK_USER) 1098 stack_user__printf(&sample->user_stack); 1099 1100 if (sample_type & PERF_SAMPLE_WEIGHT) 1101 printf("... weight: %" PRIu64 "\n", sample->weight); 1102 1103 if (sample_type & PERF_SAMPLE_DATA_SRC) 1104 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src); 1105 1106 if (sample_type & PERF_SAMPLE_TRANSACTION) 1107 printf("... transaction: %" PRIx64 "\n", sample->transaction); 1108 1109 if (sample_type & PERF_SAMPLE_READ) 1110 sample_read__printf(sample, evsel->attr.read_format); 1111 } 1112 1113 static struct machine *machines__find_for_cpumode(struct machines *machines, 1114 union perf_event *event, 1115 struct perf_sample *sample) 1116 { 1117 struct machine *machine; 1118 1119 if (perf_guest && 1120 ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || 1121 (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) { 1122 u32 pid; 1123 1124 if (event->header.type == PERF_RECORD_MMAP 1125 || event->header.type == PERF_RECORD_MMAP2) 1126 pid = event->mmap.pid; 1127 else 1128 pid = sample->pid; 1129 1130 machine = machines__find(machines, pid); 1131 if (!machine) 1132 machine = machines__findnew(machines, DEFAULT_GUEST_KERNEL_ID); 1133 return machine; 1134 } 1135 1136 return &machines->host; 1137 } 1138 1139 static int deliver_sample_value(struct perf_evlist *evlist, 1140 struct perf_tool *tool, 1141 union perf_event *event, 1142 struct perf_sample *sample, 1143 struct sample_read_value *v, 1144 struct machine *machine) 1145 { 1146 struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id); 1147 1148 if (sid) { 1149 sample->id = v->id; 1150 sample->period = v->value - sid->period; 1151 sid->period = v->value; 1152 } 1153 1154 if (!sid || sid->evsel == NULL) { 1155 ++evlist->stats.nr_unknown_id; 1156 return 0; 1157 } 1158 1159 return tool->sample(tool, event, sample, sid->evsel, machine); 1160 } 1161 1162 static int deliver_sample_group(struct perf_evlist *evlist, 1163 struct perf_tool *tool, 1164 union perf_event *event, 1165 struct perf_sample *sample, 1166 struct machine *machine) 1167 { 1168 int ret = -EINVAL; 1169 u64 i; 1170 1171 for (i = 0; i < sample->read.group.nr; i++) { 1172 ret = deliver_sample_value(evlist, tool, event, sample, 1173 &sample->read.group.values[i], 1174 machine); 1175 if (ret) 1176 break; 1177 } 1178 1179 return ret; 1180 } 1181 1182 static int 1183 perf_evlist__deliver_sample(struct perf_evlist *evlist, 1184 struct perf_tool *tool, 1185 union perf_event *event, 1186 struct perf_sample *sample, 1187 struct perf_evsel *evsel, 1188 struct machine *machine) 1189 { 1190 /* We know evsel != NULL. */ 1191 u64 sample_type = evsel->attr.sample_type; 1192 u64 read_format = evsel->attr.read_format; 1193 1194 /* Standard sample delievery. */ 1195 if (!(sample_type & PERF_SAMPLE_READ)) 1196 return tool->sample(tool, event, sample, evsel, machine); 1197 1198 /* For PERF_SAMPLE_READ we have either single or group mode. */ 1199 if (read_format & PERF_FORMAT_GROUP) 1200 return deliver_sample_group(evlist, tool, event, sample, 1201 machine); 1202 else 1203 return deliver_sample_value(evlist, tool, event, sample, 1204 &sample->read.one, machine); 1205 } 1206 1207 static int machines__deliver_event(struct machines *machines, 1208 struct perf_evlist *evlist, 1209 union perf_event *event, 1210 struct perf_sample *sample, 1211 struct perf_tool *tool, u64 file_offset) 1212 { 1213 struct perf_evsel *evsel; 1214 struct machine *machine; 1215 1216 dump_event(evlist, event, file_offset, sample); 1217 1218 evsel = perf_evlist__id2evsel(evlist, sample->id); 1219 1220 machine = machines__find_for_cpumode(machines, event, sample); 1221 1222 switch (event->header.type) { 1223 case PERF_RECORD_SAMPLE: 1224 if (evsel == NULL) { 1225 ++evlist->stats.nr_unknown_id; 1226 return 0; 1227 } 1228 dump_sample(evsel, event, sample); 1229 if (machine == NULL) { 1230 ++evlist->stats.nr_unprocessable_samples; 1231 return 0; 1232 } 1233 return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine); 1234 case PERF_RECORD_MMAP: 1235 return tool->mmap(tool, event, sample, machine); 1236 case PERF_RECORD_MMAP2: 1237 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT) 1238 ++evlist->stats.nr_proc_map_timeout; 1239 return tool->mmap2(tool, event, sample, machine); 1240 case PERF_RECORD_COMM: 1241 return tool->comm(tool, event, sample, machine); 1242 case PERF_RECORD_FORK: 1243 return tool->fork(tool, event, sample, machine); 1244 case PERF_RECORD_EXIT: 1245 return tool->exit(tool, event, sample, machine); 1246 case PERF_RECORD_LOST: 1247 if (tool->lost == perf_event__process_lost) 1248 evlist->stats.total_lost += event->lost.lost; 1249 return tool->lost(tool, event, sample, machine); 1250 case PERF_RECORD_LOST_SAMPLES: 1251 if (tool->lost_samples == perf_event__process_lost_samples) 1252 evlist->stats.total_lost_samples += event->lost_samples.lost; 1253 return tool->lost_samples(tool, event, sample, machine); 1254 case PERF_RECORD_READ: 1255 return tool->read(tool, event, sample, evsel, machine); 1256 case PERF_RECORD_THROTTLE: 1257 return tool->throttle(tool, event, sample, machine); 1258 case PERF_RECORD_UNTHROTTLE: 1259 return tool->unthrottle(tool, event, sample, machine); 1260 case PERF_RECORD_AUX: 1261 if (tool->aux == perf_event__process_aux && 1262 (event->aux.flags & PERF_AUX_FLAG_TRUNCATED)) 1263 evlist->stats.total_aux_lost += 1; 1264 return tool->aux(tool, event, sample, machine); 1265 case PERF_RECORD_ITRACE_START: 1266 return tool->itrace_start(tool, event, sample, machine); 1267 case PERF_RECORD_SWITCH: 1268 case PERF_RECORD_SWITCH_CPU_WIDE: 1269 return tool->context_switch(tool, event, sample, machine); 1270 default: 1271 ++evlist->stats.nr_unknown_events; 1272 return -1; 1273 } 1274 } 1275 1276 static int perf_session__deliver_event(struct perf_session *session, 1277 union perf_event *event, 1278 struct perf_sample *sample, 1279 struct perf_tool *tool, 1280 u64 file_offset) 1281 { 1282 int ret; 1283 1284 ret = auxtrace__process_event(session, event, sample, tool); 1285 if (ret < 0) 1286 return ret; 1287 if (ret > 0) 1288 return 0; 1289 1290 return machines__deliver_event(&session->machines, session->evlist, 1291 event, sample, tool, file_offset); 1292 } 1293 1294 static s64 perf_session__process_user_event(struct perf_session *session, 1295 union perf_event *event, 1296 u64 file_offset) 1297 { 1298 struct ordered_events *oe = &session->ordered_events; 1299 struct perf_tool *tool = session->tool; 1300 int fd = perf_data_file__fd(session->file); 1301 int err; 1302 1303 dump_event(session->evlist, event, file_offset, NULL); 1304 1305 /* These events are processed right away */ 1306 switch (event->header.type) { 1307 case PERF_RECORD_HEADER_ATTR: 1308 err = tool->attr(tool, event, &session->evlist); 1309 if (err == 0) { 1310 perf_session__set_id_hdr_size(session); 1311 perf_session__set_comm_exec(session); 1312 } 1313 return err; 1314 case PERF_RECORD_EVENT_UPDATE: 1315 return tool->event_update(tool, event, &session->evlist); 1316 case PERF_RECORD_HEADER_EVENT_TYPE: 1317 /* 1318 * Depreceated, but we need to handle it for sake 1319 * of old data files create in pipe mode. 1320 */ 1321 return 0; 1322 case PERF_RECORD_HEADER_TRACING_DATA: 1323 /* setup for reading amidst mmap */ 1324 lseek(fd, file_offset, SEEK_SET); 1325 return tool->tracing_data(tool, event, session); 1326 case PERF_RECORD_HEADER_BUILD_ID: 1327 return tool->build_id(tool, event, session); 1328 case PERF_RECORD_FINISHED_ROUND: 1329 return tool->finished_round(tool, event, oe); 1330 case PERF_RECORD_ID_INDEX: 1331 return tool->id_index(tool, event, session); 1332 case PERF_RECORD_AUXTRACE_INFO: 1333 return tool->auxtrace_info(tool, event, session); 1334 case PERF_RECORD_AUXTRACE: 1335 /* setup for reading amidst mmap */ 1336 lseek(fd, file_offset + event->header.size, SEEK_SET); 1337 return tool->auxtrace(tool, event, session); 1338 case PERF_RECORD_AUXTRACE_ERROR: 1339 perf_session__auxtrace_error_inc(session, event); 1340 return tool->auxtrace_error(tool, event, session); 1341 case PERF_RECORD_THREAD_MAP: 1342 return tool->thread_map(tool, event, session); 1343 case PERF_RECORD_CPU_MAP: 1344 return tool->cpu_map(tool, event, session); 1345 case PERF_RECORD_STAT_CONFIG: 1346 return tool->stat_config(tool, event, session); 1347 case PERF_RECORD_STAT: 1348 return tool->stat(tool, event, session); 1349 case PERF_RECORD_STAT_ROUND: 1350 return tool->stat_round(tool, event, session); 1351 case PERF_RECORD_TIME_CONV: 1352 session->time_conv = event->time_conv; 1353 return tool->time_conv(tool, event, session); 1354 default: 1355 return -EINVAL; 1356 } 1357 } 1358 1359 int perf_session__deliver_synth_event(struct perf_session *session, 1360 union perf_event *event, 1361 struct perf_sample *sample) 1362 { 1363 struct perf_evlist *evlist = session->evlist; 1364 struct perf_tool *tool = session->tool; 1365 1366 events_stats__inc(&evlist->stats, event->header.type); 1367 1368 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1369 return perf_session__process_user_event(session, event, 0); 1370 1371 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0); 1372 } 1373 1374 static void event_swap(union perf_event *event, bool sample_id_all) 1375 { 1376 perf_event__swap_op swap; 1377 1378 swap = perf_event__swap_ops[event->header.type]; 1379 if (swap) 1380 swap(event, sample_id_all); 1381 } 1382 1383 int perf_session__peek_event(struct perf_session *session, off_t file_offset, 1384 void *buf, size_t buf_sz, 1385 union perf_event **event_ptr, 1386 struct perf_sample *sample) 1387 { 1388 union perf_event *event; 1389 size_t hdr_sz, rest; 1390 int fd; 1391 1392 if (session->one_mmap && !session->header.needs_swap) { 1393 event = file_offset - session->one_mmap_offset + 1394 session->one_mmap_addr; 1395 goto out_parse_sample; 1396 } 1397 1398 if (perf_data_file__is_pipe(session->file)) 1399 return -1; 1400 1401 fd = perf_data_file__fd(session->file); 1402 hdr_sz = sizeof(struct perf_event_header); 1403 1404 if (buf_sz < hdr_sz) 1405 return -1; 1406 1407 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 || 1408 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz) 1409 return -1; 1410 1411 event = (union perf_event *)buf; 1412 1413 if (session->header.needs_swap) 1414 perf_event_header__bswap(&event->header); 1415 1416 if (event->header.size < hdr_sz || event->header.size > buf_sz) 1417 return -1; 1418 1419 rest = event->header.size - hdr_sz; 1420 1421 if (readn(fd, buf, rest) != (ssize_t)rest) 1422 return -1; 1423 1424 if (session->header.needs_swap) 1425 event_swap(event, perf_evlist__sample_id_all(session->evlist)); 1426 1427 out_parse_sample: 1428 1429 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START && 1430 perf_evlist__parse_sample(session->evlist, event, sample)) 1431 return -1; 1432 1433 *event_ptr = event; 1434 1435 return 0; 1436 } 1437 1438 static s64 perf_session__process_event(struct perf_session *session, 1439 union perf_event *event, u64 file_offset) 1440 { 1441 struct perf_evlist *evlist = session->evlist; 1442 struct perf_tool *tool = session->tool; 1443 struct perf_sample sample; 1444 int ret; 1445 1446 if (session->header.needs_swap) 1447 event_swap(event, perf_evlist__sample_id_all(evlist)); 1448 1449 if (event->header.type >= PERF_RECORD_HEADER_MAX) 1450 return -EINVAL; 1451 1452 events_stats__inc(&evlist->stats, event->header.type); 1453 1454 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1455 return perf_session__process_user_event(session, event, file_offset); 1456 1457 /* 1458 * For all kernel events we get the sample data 1459 */ 1460 ret = perf_evlist__parse_sample(evlist, event, &sample); 1461 if (ret) 1462 return ret; 1463 1464 if (tool->ordered_events) { 1465 ret = perf_session__queue_event(session, event, &sample, file_offset); 1466 if (ret != -ETIME) 1467 return ret; 1468 } 1469 1470 return perf_session__deliver_event(session, event, &sample, tool, 1471 file_offset); 1472 } 1473 1474 void perf_event_header__bswap(struct perf_event_header *hdr) 1475 { 1476 hdr->type = bswap_32(hdr->type); 1477 hdr->misc = bswap_16(hdr->misc); 1478 hdr->size = bswap_16(hdr->size); 1479 } 1480 1481 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) 1482 { 1483 return machine__findnew_thread(&session->machines.host, -1, pid); 1484 } 1485 1486 int perf_session__register_idle_thread(struct perf_session *session) 1487 { 1488 struct thread *thread; 1489 int err = 0; 1490 1491 thread = machine__findnew_thread(&session->machines.host, 0, 0); 1492 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) { 1493 pr_err("problem inserting idle task.\n"); 1494 err = -1; 1495 } 1496 1497 /* machine__findnew_thread() got the thread, so put it */ 1498 thread__put(thread); 1499 return err; 1500 } 1501 1502 static void 1503 perf_session__warn_order(const struct perf_session *session) 1504 { 1505 const struct ordered_events *oe = &session->ordered_events; 1506 struct perf_evsel *evsel; 1507 bool should_warn = true; 1508 1509 evlist__for_each_entry(session->evlist, evsel) { 1510 if (evsel->attr.write_backward) 1511 should_warn = false; 1512 } 1513 1514 if (!should_warn) 1515 return; 1516 if (oe->nr_unordered_events != 0) 1517 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events); 1518 } 1519 1520 static void perf_session__warn_about_errors(const struct perf_session *session) 1521 { 1522 const struct events_stats *stats = &session->evlist->stats; 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 perf_session__warn_order(session); 1580 1581 events_stats__auxtrace_error_warn(stats); 1582 1583 if (stats->nr_proc_map_timeout != 0) { 1584 ui__warning("%d map information files for pre-existing threads were\n" 1585 "not processed, if there are samples for addresses they\n" 1586 "will not be resolved, you may find out which are these\n" 1587 "threads by running with -v and redirecting the output\n" 1588 "to a file.\n" 1589 "The time limit to process proc map is too short?\n" 1590 "Increase it by --proc-map-timeout\n", 1591 stats->nr_proc_map_timeout); 1592 } 1593 } 1594 1595 static int perf_session__flush_thread_stack(struct thread *thread, 1596 void *p __maybe_unused) 1597 { 1598 return thread_stack__flush(thread); 1599 } 1600 1601 static int perf_session__flush_thread_stacks(struct perf_session *session) 1602 { 1603 return machines__for_each_thread(&session->machines, 1604 perf_session__flush_thread_stack, 1605 NULL); 1606 } 1607 1608 volatile int session_done; 1609 1610 static int __perf_session__process_pipe_events(struct perf_session *session) 1611 { 1612 struct ordered_events *oe = &session->ordered_events; 1613 struct perf_tool *tool = session->tool; 1614 int fd = perf_data_file__fd(session->file); 1615 union perf_event *event; 1616 uint32_t size, cur_size = 0; 1617 void *buf = NULL; 1618 s64 skip = 0; 1619 u64 head; 1620 ssize_t err; 1621 void *p; 1622 1623 perf_tool__fill_defaults(tool); 1624 1625 head = 0; 1626 cur_size = sizeof(union perf_event); 1627 1628 buf = malloc(cur_size); 1629 if (!buf) 1630 return -errno; 1631 more: 1632 event = buf; 1633 err = readn(fd, event, sizeof(struct perf_event_header)); 1634 if (err <= 0) { 1635 if (err == 0) 1636 goto done; 1637 1638 pr_err("failed to read event header\n"); 1639 goto out_err; 1640 } 1641 1642 if (session->header.needs_swap) 1643 perf_event_header__bswap(&event->header); 1644 1645 size = event->header.size; 1646 if (size < sizeof(struct perf_event_header)) { 1647 pr_err("bad event header size\n"); 1648 goto out_err; 1649 } 1650 1651 if (size > cur_size) { 1652 void *new = realloc(buf, size); 1653 if (!new) { 1654 pr_err("failed to allocate memory to read event\n"); 1655 goto out_err; 1656 } 1657 buf = new; 1658 cur_size = size; 1659 event = buf; 1660 } 1661 p = event; 1662 p += sizeof(struct perf_event_header); 1663 1664 if (size - sizeof(struct perf_event_header)) { 1665 err = readn(fd, p, size - sizeof(struct perf_event_header)); 1666 if (err <= 0) { 1667 if (err == 0) { 1668 pr_err("unexpected end of event stream\n"); 1669 goto done; 1670 } 1671 1672 pr_err("failed to read event data\n"); 1673 goto out_err; 1674 } 1675 } 1676 1677 if ((skip = perf_session__process_event(session, event, head)) < 0) { 1678 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1679 head, event->header.size, event->header.type); 1680 err = -EINVAL; 1681 goto out_err; 1682 } 1683 1684 head += size; 1685 1686 if (skip > 0) 1687 head += skip; 1688 1689 if (!session_done()) 1690 goto more; 1691 done: 1692 /* do the final flush for ordered samples */ 1693 err = ordered_events__flush(oe, OE_FLUSH__FINAL); 1694 if (err) 1695 goto out_err; 1696 err = auxtrace__flush_events(session, tool); 1697 if (err) 1698 goto out_err; 1699 err = perf_session__flush_thread_stacks(session); 1700 out_err: 1701 free(buf); 1702 perf_session__warn_about_errors(session); 1703 ordered_events__free(&session->ordered_events); 1704 auxtrace__free_events(session); 1705 return err; 1706 } 1707 1708 static union perf_event * 1709 fetch_mmaped_event(struct perf_session *session, 1710 u64 head, size_t mmap_size, char *buf) 1711 { 1712 union perf_event *event; 1713 1714 /* 1715 * Ensure we have enough space remaining to read 1716 * the size of the event in the headers. 1717 */ 1718 if (head + sizeof(event->header) > mmap_size) 1719 return NULL; 1720 1721 event = (union perf_event *)(buf + head); 1722 1723 if (session->header.needs_swap) 1724 perf_event_header__bswap(&event->header); 1725 1726 if (head + event->header.size > mmap_size) { 1727 /* We're not fetching the event so swap back again */ 1728 if (session->header.needs_swap) 1729 perf_event_header__bswap(&event->header); 1730 return NULL; 1731 } 1732 1733 return event; 1734 } 1735 1736 /* 1737 * On 64bit we can mmap the data file in one go. No need for tiny mmap 1738 * slices. On 32bit we use 32MB. 1739 */ 1740 #if BITS_PER_LONG == 64 1741 #define MMAP_SIZE ULLONG_MAX 1742 #define NUM_MMAPS 1 1743 #else 1744 #define MMAP_SIZE (32 * 1024 * 1024ULL) 1745 #define NUM_MMAPS 128 1746 #endif 1747 1748 static int __perf_session__process_events(struct perf_session *session, 1749 u64 data_offset, u64 data_size, 1750 u64 file_size) 1751 { 1752 struct ordered_events *oe = &session->ordered_events; 1753 struct perf_tool *tool = session->tool; 1754 int fd = perf_data_file__fd(session->file); 1755 u64 head, page_offset, file_offset, file_pos, size; 1756 int err, mmap_prot, mmap_flags, map_idx = 0; 1757 size_t mmap_size; 1758 char *buf, *mmaps[NUM_MMAPS]; 1759 union perf_event *event; 1760 struct ui_progress prog; 1761 s64 skip; 1762 1763 perf_tool__fill_defaults(tool); 1764 1765 page_offset = page_size * (data_offset / page_size); 1766 file_offset = page_offset; 1767 head = data_offset - page_offset; 1768 1769 if (data_size == 0) 1770 goto out; 1771 1772 if (data_offset + data_size < file_size) 1773 file_size = data_offset + data_size; 1774 1775 ui_progress__init(&prog, file_size, "Processing events..."); 1776 1777 mmap_size = MMAP_SIZE; 1778 if (mmap_size > file_size) { 1779 mmap_size = file_size; 1780 session->one_mmap = true; 1781 } 1782 1783 memset(mmaps, 0, sizeof(mmaps)); 1784 1785 mmap_prot = PROT_READ; 1786 mmap_flags = MAP_SHARED; 1787 1788 if (session->header.needs_swap) { 1789 mmap_prot |= PROT_WRITE; 1790 mmap_flags = MAP_PRIVATE; 1791 } 1792 remap: 1793 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd, 1794 file_offset); 1795 if (buf == MAP_FAILED) { 1796 pr_err("failed to mmap file\n"); 1797 err = -errno; 1798 goto out_err; 1799 } 1800 mmaps[map_idx] = buf; 1801 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); 1802 file_pos = file_offset + head; 1803 if (session->one_mmap) { 1804 session->one_mmap_addr = buf; 1805 session->one_mmap_offset = file_offset; 1806 } 1807 1808 more: 1809 event = fetch_mmaped_event(session, head, mmap_size, buf); 1810 if (!event) { 1811 if (mmaps[map_idx]) { 1812 munmap(mmaps[map_idx], mmap_size); 1813 mmaps[map_idx] = NULL; 1814 } 1815 1816 page_offset = page_size * (head / page_size); 1817 file_offset += page_offset; 1818 head -= page_offset; 1819 goto remap; 1820 } 1821 1822 size = event->header.size; 1823 1824 if (size < sizeof(struct perf_event_header) || 1825 (skip = perf_session__process_event(session, event, file_pos)) < 0) { 1826 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1827 file_offset + head, event->header.size, 1828 event->header.type); 1829 err = -EINVAL; 1830 goto out_err; 1831 } 1832 1833 if (skip) 1834 size += skip; 1835 1836 head += size; 1837 file_pos += size; 1838 1839 ui_progress__update(&prog, size); 1840 1841 if (session_done()) 1842 goto out; 1843 1844 if (file_pos < file_size) 1845 goto more; 1846 1847 out: 1848 /* do the final flush for ordered samples */ 1849 err = ordered_events__flush(oe, OE_FLUSH__FINAL); 1850 if (err) 1851 goto out_err; 1852 err = auxtrace__flush_events(session, tool); 1853 if (err) 1854 goto out_err; 1855 err = perf_session__flush_thread_stacks(session); 1856 out_err: 1857 ui_progress__finish(); 1858 perf_session__warn_about_errors(session); 1859 /* 1860 * We may switching perf.data output, make ordered_events 1861 * reusable. 1862 */ 1863 ordered_events__reinit(&session->ordered_events); 1864 auxtrace__free_events(session); 1865 session->one_mmap = false; 1866 return err; 1867 } 1868 1869 int perf_session__process_events(struct perf_session *session) 1870 { 1871 u64 size = perf_data_file__size(session->file); 1872 int err; 1873 1874 if (perf_session__register_idle_thread(session) < 0) 1875 return -ENOMEM; 1876 1877 if (!perf_data_file__is_pipe(session->file)) 1878 err = __perf_session__process_events(session, 1879 session->header.data_offset, 1880 session->header.data_size, size); 1881 else 1882 err = __perf_session__process_pipe_events(session); 1883 1884 return err; 1885 } 1886 1887 bool perf_session__has_traces(struct perf_session *session, const char *msg) 1888 { 1889 struct perf_evsel *evsel; 1890 1891 evlist__for_each_entry(session->evlist, evsel) { 1892 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) 1893 return true; 1894 } 1895 1896 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); 1897 return false; 1898 } 1899 1900 int maps__set_kallsyms_ref_reloc_sym(struct map **maps, 1901 const char *symbol_name, u64 addr) 1902 { 1903 char *bracket; 1904 enum map_type i; 1905 struct ref_reloc_sym *ref; 1906 1907 ref = zalloc(sizeof(struct ref_reloc_sym)); 1908 if (ref == NULL) 1909 return -ENOMEM; 1910 1911 ref->name = strdup(symbol_name); 1912 if (ref->name == NULL) { 1913 free(ref); 1914 return -ENOMEM; 1915 } 1916 1917 bracket = strchr(ref->name, ']'); 1918 if (bracket) 1919 *bracket = '\0'; 1920 1921 ref->addr = addr; 1922 1923 for (i = 0; i < MAP__NR_TYPES; ++i) { 1924 struct kmap *kmap = map__kmap(maps[i]); 1925 1926 if (!kmap) 1927 continue; 1928 kmap->ref_reloc_sym = ref; 1929 } 1930 1931 return 0; 1932 } 1933 1934 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp) 1935 { 1936 return machines__fprintf_dsos(&session->machines, fp); 1937 } 1938 1939 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp, 1940 bool (skip)(struct dso *dso, int parm), int parm) 1941 { 1942 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm); 1943 } 1944 1945 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) 1946 { 1947 size_t ret; 1948 const char *msg = ""; 1949 1950 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE)) 1951 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)"; 1952 1953 ret = fprintf(fp, "\nAggregated stats:%s\n", msg); 1954 1955 ret += events_stats__fprintf(&session->evlist->stats, fp); 1956 return ret; 1957 } 1958 1959 size_t perf_session__fprintf(struct perf_session *session, FILE *fp) 1960 { 1961 /* 1962 * FIXME: Here we have to actually print all the machines in this 1963 * session, not just the host... 1964 */ 1965 return machine__fprintf(&session->machines.host, fp); 1966 } 1967 1968 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, 1969 unsigned int type) 1970 { 1971 struct perf_evsel *pos; 1972 1973 evlist__for_each_entry(session->evlist, pos) { 1974 if (pos->attr.type == type) 1975 return pos; 1976 } 1977 return NULL; 1978 } 1979 1980 int perf_session__cpu_bitmap(struct perf_session *session, 1981 const char *cpu_list, unsigned long *cpu_bitmap) 1982 { 1983 int i, err = -1; 1984 struct cpu_map *map; 1985 1986 for (i = 0; i < PERF_TYPE_MAX; ++i) { 1987 struct perf_evsel *evsel; 1988 1989 evsel = perf_session__find_first_evtype(session, i); 1990 if (!evsel) 1991 continue; 1992 1993 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { 1994 pr_err("File does not contain CPU events. " 1995 "Remove -c option to proceed.\n"); 1996 return -1; 1997 } 1998 } 1999 2000 map = cpu_map__new(cpu_list); 2001 if (map == NULL) { 2002 pr_err("Invalid cpu_list\n"); 2003 return -1; 2004 } 2005 2006 for (i = 0; i < map->nr; i++) { 2007 int cpu = map->map[i]; 2008 2009 if (cpu >= MAX_NR_CPUS) { 2010 pr_err("Requested CPU %d too large. " 2011 "Consider raising MAX_NR_CPUS\n", cpu); 2012 goto out_delete_map; 2013 } 2014 2015 set_bit(cpu, cpu_bitmap); 2016 } 2017 2018 err = 0; 2019 2020 out_delete_map: 2021 cpu_map__put(map); 2022 return err; 2023 } 2024 2025 void perf_session__fprintf_info(struct perf_session *session, FILE *fp, 2026 bool full) 2027 { 2028 struct stat st; 2029 int fd, ret; 2030 2031 if (session == NULL || fp == NULL) 2032 return; 2033 2034 fd = perf_data_file__fd(session->file); 2035 2036 ret = fstat(fd, &st); 2037 if (ret == -1) 2038 return; 2039 2040 fprintf(fp, "# ========\n"); 2041 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); 2042 perf_header__fprintf_info(session, fp, full); 2043 fprintf(fp, "# ========\n#\n"); 2044 } 2045 2046 2047 int __perf_session__set_tracepoints_handlers(struct perf_session *session, 2048 const struct perf_evsel_str_handler *assocs, 2049 size_t nr_assocs) 2050 { 2051 struct perf_evsel *evsel; 2052 size_t i; 2053 int err; 2054 2055 for (i = 0; i < nr_assocs; i++) { 2056 /* 2057 * Adding a handler for an event not in the session, 2058 * just ignore it. 2059 */ 2060 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name); 2061 if (evsel == NULL) 2062 continue; 2063 2064 err = -EEXIST; 2065 if (evsel->handler != NULL) 2066 goto out; 2067 evsel->handler = assocs[i].handler; 2068 } 2069 2070 err = 0; 2071 out: 2072 return err; 2073 } 2074 2075 int perf_event__process_id_index(struct perf_tool *tool __maybe_unused, 2076 union perf_event *event, 2077 struct perf_session *session) 2078 { 2079 struct perf_evlist *evlist = session->evlist; 2080 struct id_index_event *ie = &event->id_index; 2081 size_t i, nr, max_nr; 2082 2083 max_nr = (ie->header.size - sizeof(struct id_index_event)) / 2084 sizeof(struct id_index_entry); 2085 nr = ie->nr; 2086 if (nr > max_nr) 2087 return -EINVAL; 2088 2089 if (dump_trace) 2090 fprintf(stdout, " nr: %zu\n", nr); 2091 2092 for (i = 0; i < nr; i++) { 2093 struct id_index_entry *e = &ie->entries[i]; 2094 struct perf_sample_id *sid; 2095 2096 if (dump_trace) { 2097 fprintf(stdout, " ... id: %"PRIu64, e->id); 2098 fprintf(stdout, " idx: %"PRIu64, e->idx); 2099 fprintf(stdout, " cpu: %"PRId64, e->cpu); 2100 fprintf(stdout, " tid: %"PRId64"\n", e->tid); 2101 } 2102 2103 sid = perf_evlist__id2sid(evlist, e->id); 2104 if (!sid) 2105 return -ENOENT; 2106 sid->idx = e->idx; 2107 sid->cpu = e->cpu; 2108 sid->tid = e->tid; 2109 } 2110 return 0; 2111 } 2112 2113 int perf_event__synthesize_id_index(struct perf_tool *tool, 2114 perf_event__handler_t process, 2115 struct perf_evlist *evlist, 2116 struct machine *machine) 2117 { 2118 union perf_event *ev; 2119 struct perf_evsel *evsel; 2120 size_t nr = 0, i = 0, sz, max_nr, n; 2121 int err; 2122 2123 pr_debug2("Synthesizing id index\n"); 2124 2125 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) / 2126 sizeof(struct id_index_entry); 2127 2128 evlist__for_each_entry(evlist, evsel) 2129 nr += evsel->ids; 2130 2131 n = nr > max_nr ? max_nr : nr; 2132 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry); 2133 ev = zalloc(sz); 2134 if (!ev) 2135 return -ENOMEM; 2136 2137 ev->id_index.header.type = PERF_RECORD_ID_INDEX; 2138 ev->id_index.header.size = sz; 2139 ev->id_index.nr = n; 2140 2141 evlist__for_each_entry(evlist, evsel) { 2142 u32 j; 2143 2144 for (j = 0; j < evsel->ids; j++) { 2145 struct id_index_entry *e; 2146 struct perf_sample_id *sid; 2147 2148 if (i >= n) { 2149 err = process(tool, ev, NULL, machine); 2150 if (err) 2151 goto out_err; 2152 nr -= n; 2153 i = 0; 2154 } 2155 2156 e = &ev->id_index.entries[i++]; 2157 2158 e->id = evsel->id[j]; 2159 2160 sid = perf_evlist__id2sid(evlist, e->id); 2161 if (!sid) { 2162 free(ev); 2163 return -ENOENT; 2164 } 2165 2166 e->idx = sid->idx; 2167 e->cpu = sid->cpu; 2168 e->tid = sid->tid; 2169 } 2170 } 2171 2172 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry); 2173 ev->id_index.header.size = sz; 2174 ev->id_index.nr = nr; 2175 2176 err = process(tool, ev, NULL, machine); 2177 out_err: 2178 free(ev); 2179 2180 return err; 2181 } 2182