1 // SPDX-License-Identifier: GPL-2.0 2 #include <errno.h> 3 #include <inttypes.h> 4 #include <linux/err.h> 5 #include <linux/kernel.h> 6 #include <linux/zalloc.h> 7 #include <api/fs/fs.h> 8 9 #include <byteswap.h> 10 #include <unistd.h> 11 #include <sys/types.h> 12 #include <sys/mman.h> 13 #include <perf/cpumap.h> 14 15 #include "map_symbol.h" 16 #include "branch.h" 17 #include "debug.h" 18 #include "env.h" 19 #include "evlist.h" 20 #include "evsel.h" 21 #include "memswap.h" 22 #include "map.h" 23 #include "symbol.h" 24 #include "session.h" 25 #include "tool.h" 26 #include "perf_regs.h" 27 #include "asm/bug.h" 28 #include "auxtrace.h" 29 #include "thread.h" 30 #include "thread-stack.h" 31 #include "sample-raw.h" 32 #include "stat.h" 33 #include "tsc.h" 34 #include "ui/progress.h" 35 #include "../perf.h" 36 #include "arch/common.h" 37 #include "units.h" 38 #include <internal/lib.h> 39 40 #ifdef HAVE_ZSTD_SUPPORT 41 static int perf_session__process_compressed_event(struct perf_session *session, 42 union perf_event *event, u64 file_offset, 43 const char *file_path) 44 { 45 void *src; 46 size_t decomp_size, src_size; 47 u64 decomp_last_rem = 0; 48 size_t mmap_len, decomp_len = session->header.env.comp_mmap_len; 49 struct decomp *decomp, *decomp_last = session->active_decomp->decomp_last; 50 51 if (decomp_last) { 52 decomp_last_rem = decomp_last->size - decomp_last->head; 53 decomp_len += decomp_last_rem; 54 } 55 56 mmap_len = sizeof(struct decomp) + decomp_len; 57 decomp = mmap(NULL, mmap_len, PROT_READ|PROT_WRITE, 58 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 59 if (decomp == MAP_FAILED) { 60 pr_err("Couldn't allocate memory for decompression\n"); 61 return -1; 62 } 63 64 decomp->file_pos = file_offset; 65 decomp->file_path = file_path; 66 decomp->mmap_len = mmap_len; 67 decomp->head = 0; 68 69 if (decomp_last_rem) { 70 memcpy(decomp->data, &(decomp_last->data[decomp_last->head]), decomp_last_rem); 71 decomp->size = decomp_last_rem; 72 } 73 74 src = (void *)event + sizeof(struct perf_record_compressed); 75 src_size = event->pack.header.size - sizeof(struct perf_record_compressed); 76 77 decomp_size = zstd_decompress_stream(session->active_decomp->zstd_decomp, src, src_size, 78 &(decomp->data[decomp_last_rem]), decomp_len - decomp_last_rem); 79 if (!decomp_size) { 80 munmap(decomp, mmap_len); 81 pr_err("Couldn't decompress data\n"); 82 return -1; 83 } 84 85 decomp->size += decomp_size; 86 87 if (session->active_decomp->decomp == NULL) 88 session->active_decomp->decomp = decomp; 89 else 90 session->active_decomp->decomp_last->next = decomp; 91 92 session->active_decomp->decomp_last = decomp; 93 94 pr_debug("decomp (B): %zd to %zd\n", src_size, decomp_size); 95 96 return 0; 97 } 98 #else /* !HAVE_ZSTD_SUPPORT */ 99 #define perf_session__process_compressed_event perf_session__process_compressed_event_stub 100 #endif 101 102 static int perf_session__deliver_event(struct perf_session *session, 103 union perf_event *event, 104 struct perf_tool *tool, 105 u64 file_offset, 106 const char *file_path); 107 108 static int perf_session__open(struct perf_session *session, int repipe_fd) 109 { 110 struct perf_data *data = session->data; 111 112 if (perf_session__read_header(session, repipe_fd) < 0) { 113 pr_err("incompatible file format (rerun with -v to learn more)\n"); 114 return -1; 115 } 116 117 if (perf_data__is_pipe(data)) 118 return 0; 119 120 if (perf_header__has_feat(&session->header, HEADER_STAT)) 121 return 0; 122 123 if (!evlist__valid_sample_type(session->evlist)) { 124 pr_err("non matching sample_type\n"); 125 return -1; 126 } 127 128 if (!evlist__valid_sample_id_all(session->evlist)) { 129 pr_err("non matching sample_id_all\n"); 130 return -1; 131 } 132 133 if (!evlist__valid_read_format(session->evlist)) { 134 pr_err("non matching read_format\n"); 135 return -1; 136 } 137 138 return 0; 139 } 140 141 void perf_session__set_id_hdr_size(struct perf_session *session) 142 { 143 u16 id_hdr_size = evlist__id_hdr_size(session->evlist); 144 145 machines__set_id_hdr_size(&session->machines, id_hdr_size); 146 } 147 148 int perf_session__create_kernel_maps(struct perf_session *session) 149 { 150 int ret = machine__create_kernel_maps(&session->machines.host); 151 152 if (ret >= 0) 153 ret = machines__create_guest_kernel_maps(&session->machines); 154 return ret; 155 } 156 157 static void perf_session__destroy_kernel_maps(struct perf_session *session) 158 { 159 machines__destroy_kernel_maps(&session->machines); 160 } 161 162 static bool perf_session__has_comm_exec(struct perf_session *session) 163 { 164 struct evsel *evsel; 165 166 evlist__for_each_entry(session->evlist, evsel) { 167 if (evsel->core.attr.comm_exec) 168 return true; 169 } 170 171 return false; 172 } 173 174 static void perf_session__set_comm_exec(struct perf_session *session) 175 { 176 bool comm_exec = perf_session__has_comm_exec(session); 177 178 machines__set_comm_exec(&session->machines, comm_exec); 179 } 180 181 static int ordered_events__deliver_event(struct ordered_events *oe, 182 struct ordered_event *event) 183 { 184 struct perf_session *session = container_of(oe, struct perf_session, 185 ordered_events); 186 187 return perf_session__deliver_event(session, event->event, 188 session->tool, event->file_offset, 189 event->file_path); 190 } 191 192 struct perf_session *__perf_session__new(struct perf_data *data, 193 bool repipe, int repipe_fd, 194 struct perf_tool *tool) 195 { 196 int ret = -ENOMEM; 197 struct perf_session *session = zalloc(sizeof(*session)); 198 199 if (!session) 200 goto out; 201 202 session->repipe = repipe; 203 session->tool = tool; 204 session->decomp_data.zstd_decomp = &session->zstd_data; 205 session->active_decomp = &session->decomp_data; 206 INIT_LIST_HEAD(&session->auxtrace_index); 207 machines__init(&session->machines); 208 ordered_events__init(&session->ordered_events, 209 ordered_events__deliver_event, NULL); 210 211 perf_env__init(&session->header.env); 212 if (data) { 213 ret = perf_data__open(data); 214 if (ret < 0) 215 goto out_delete; 216 217 session->data = data; 218 219 if (perf_data__is_read(data)) { 220 ret = perf_session__open(session, repipe_fd); 221 if (ret < 0) 222 goto out_delete; 223 224 /* 225 * set session attributes that are present in perf.data 226 * but not in pipe-mode. 227 */ 228 if (!data->is_pipe) { 229 perf_session__set_id_hdr_size(session); 230 perf_session__set_comm_exec(session); 231 } 232 233 evlist__init_trace_event_sample_raw(session->evlist); 234 235 /* Open the directory data. */ 236 if (data->is_dir) { 237 ret = perf_data__open_dir(data); 238 if (ret) 239 goto out_delete; 240 } 241 242 if (!symbol_conf.kallsyms_name && 243 !symbol_conf.vmlinux_name) 244 symbol_conf.kallsyms_name = perf_data__kallsyms_name(data); 245 } 246 } else { 247 session->machines.host.env = &perf_env; 248 } 249 250 session->machines.host.single_address_space = 251 perf_env__single_address_space(session->machines.host.env); 252 253 if (!data || perf_data__is_write(data)) { 254 /* 255 * In O_RDONLY mode this will be performed when reading the 256 * kernel MMAP event, in perf_event__process_mmap(). 257 */ 258 if (perf_session__create_kernel_maps(session) < 0) 259 pr_warning("Cannot read kernel map\n"); 260 } 261 262 /* 263 * In pipe-mode, evlist is empty until PERF_RECORD_HEADER_ATTR is 264 * processed, so evlist__sample_id_all is not meaningful here. 265 */ 266 if ((!data || !data->is_pipe) && tool && tool->ordering_requires_timestamps && 267 tool->ordered_events && !evlist__sample_id_all(session->evlist)) { 268 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); 269 tool->ordered_events = false; 270 } 271 272 return session; 273 274 out_delete: 275 perf_session__delete(session); 276 out: 277 return ERR_PTR(ret); 278 } 279 280 static void perf_session__delete_threads(struct perf_session *session) 281 { 282 machine__delete_threads(&session->machines.host); 283 } 284 285 static void perf_decomp__release_events(struct decomp *next) 286 { 287 struct decomp *decomp; 288 size_t mmap_len; 289 290 do { 291 decomp = next; 292 if (decomp == NULL) 293 break; 294 next = decomp->next; 295 mmap_len = decomp->mmap_len; 296 munmap(decomp, mmap_len); 297 } while (1); 298 } 299 300 void perf_session__delete(struct perf_session *session) 301 { 302 if (session == NULL) 303 return; 304 auxtrace__free(session); 305 auxtrace_index__free(&session->auxtrace_index); 306 perf_session__destroy_kernel_maps(session); 307 perf_session__delete_threads(session); 308 perf_decomp__release_events(session->decomp_data.decomp); 309 perf_env__exit(&session->header.env); 310 machines__exit(&session->machines); 311 if (session->data) { 312 if (perf_data__is_read(session->data)) 313 evlist__delete(session->evlist); 314 perf_data__close(session->data); 315 } 316 trace_event__cleanup(&session->tevent); 317 free(session); 318 } 319 320 static int process_event_synth_tracing_data_stub(struct perf_session *session 321 __maybe_unused, 322 union perf_event *event 323 __maybe_unused) 324 { 325 dump_printf(": unhandled!\n"); 326 return 0; 327 } 328 329 static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused, 330 union perf_event *event __maybe_unused, 331 struct evlist **pevlist 332 __maybe_unused) 333 { 334 dump_printf(": unhandled!\n"); 335 return 0; 336 } 337 338 static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused, 339 union perf_event *event __maybe_unused, 340 struct evlist **pevlist 341 __maybe_unused) 342 { 343 if (dump_trace) 344 perf_event__fprintf_event_update(event, stdout); 345 346 dump_printf(": unhandled!\n"); 347 return 0; 348 } 349 350 static int process_event_sample_stub(struct perf_tool *tool __maybe_unused, 351 union perf_event *event __maybe_unused, 352 struct perf_sample *sample __maybe_unused, 353 struct evsel *evsel __maybe_unused, 354 struct machine *machine __maybe_unused) 355 { 356 dump_printf(": unhandled!\n"); 357 return 0; 358 } 359 360 static int process_event_stub(struct perf_tool *tool __maybe_unused, 361 union perf_event *event __maybe_unused, 362 struct perf_sample *sample __maybe_unused, 363 struct machine *machine __maybe_unused) 364 { 365 dump_printf(": unhandled!\n"); 366 return 0; 367 } 368 369 static int process_finished_round_stub(struct perf_tool *tool __maybe_unused, 370 union perf_event *event __maybe_unused, 371 struct ordered_events *oe __maybe_unused) 372 { 373 dump_printf(": unhandled!\n"); 374 return 0; 375 } 376 377 static int process_finished_round(struct perf_tool *tool, 378 union perf_event *event, 379 struct ordered_events *oe); 380 381 static int skipn(int fd, off_t n) 382 { 383 char buf[4096]; 384 ssize_t ret; 385 386 while (n > 0) { 387 ret = read(fd, buf, min(n, (off_t)sizeof(buf))); 388 if (ret <= 0) 389 return ret; 390 n -= ret; 391 } 392 393 return 0; 394 } 395 396 static s64 process_event_auxtrace_stub(struct perf_session *session __maybe_unused, 397 union perf_event *event) 398 { 399 dump_printf(": unhandled!\n"); 400 if (perf_data__is_pipe(session->data)) 401 skipn(perf_data__fd(session->data), event->auxtrace.size); 402 return event->auxtrace.size; 403 } 404 405 static int process_event_op2_stub(struct perf_session *session __maybe_unused, 406 union perf_event *event __maybe_unused) 407 { 408 dump_printf(": unhandled!\n"); 409 return 0; 410 } 411 412 413 static 414 int process_event_thread_map_stub(struct perf_session *session __maybe_unused, 415 union perf_event *event __maybe_unused) 416 { 417 if (dump_trace) 418 perf_event__fprintf_thread_map(event, stdout); 419 420 dump_printf(": unhandled!\n"); 421 return 0; 422 } 423 424 static 425 int process_event_cpu_map_stub(struct perf_session *session __maybe_unused, 426 union perf_event *event __maybe_unused) 427 { 428 if (dump_trace) 429 perf_event__fprintf_cpu_map(event, stdout); 430 431 dump_printf(": unhandled!\n"); 432 return 0; 433 } 434 435 static 436 int process_event_stat_config_stub(struct perf_session *session __maybe_unused, 437 union perf_event *event __maybe_unused) 438 { 439 if (dump_trace) 440 perf_event__fprintf_stat_config(event, stdout); 441 442 dump_printf(": unhandled!\n"); 443 return 0; 444 } 445 446 static int process_stat_stub(struct perf_session *perf_session __maybe_unused, 447 union perf_event *event) 448 { 449 if (dump_trace) 450 perf_event__fprintf_stat(event, stdout); 451 452 dump_printf(": unhandled!\n"); 453 return 0; 454 } 455 456 static int process_stat_round_stub(struct perf_session *perf_session __maybe_unused, 457 union perf_event *event) 458 { 459 if (dump_trace) 460 perf_event__fprintf_stat_round(event, stdout); 461 462 dump_printf(": unhandled!\n"); 463 return 0; 464 } 465 466 static int process_event_time_conv_stub(struct perf_session *perf_session __maybe_unused, 467 union perf_event *event) 468 { 469 if (dump_trace) 470 perf_event__fprintf_time_conv(event, stdout); 471 472 dump_printf(": unhandled!\n"); 473 return 0; 474 } 475 476 static int perf_session__process_compressed_event_stub(struct perf_session *session __maybe_unused, 477 union perf_event *event __maybe_unused, 478 u64 file_offset __maybe_unused, 479 const char *file_path __maybe_unused) 480 { 481 dump_printf(": unhandled!\n"); 482 return 0; 483 } 484 485 void perf_tool__fill_defaults(struct perf_tool *tool) 486 { 487 if (tool->sample == NULL) 488 tool->sample = process_event_sample_stub; 489 if (tool->mmap == NULL) 490 tool->mmap = process_event_stub; 491 if (tool->mmap2 == NULL) 492 tool->mmap2 = process_event_stub; 493 if (tool->comm == NULL) 494 tool->comm = process_event_stub; 495 if (tool->namespaces == NULL) 496 tool->namespaces = process_event_stub; 497 if (tool->cgroup == NULL) 498 tool->cgroup = process_event_stub; 499 if (tool->fork == NULL) 500 tool->fork = process_event_stub; 501 if (tool->exit == NULL) 502 tool->exit = process_event_stub; 503 if (tool->lost == NULL) 504 tool->lost = perf_event__process_lost; 505 if (tool->lost_samples == NULL) 506 tool->lost_samples = perf_event__process_lost_samples; 507 if (tool->aux == NULL) 508 tool->aux = perf_event__process_aux; 509 if (tool->itrace_start == NULL) 510 tool->itrace_start = perf_event__process_itrace_start; 511 if (tool->context_switch == NULL) 512 tool->context_switch = perf_event__process_switch; 513 if (tool->ksymbol == NULL) 514 tool->ksymbol = perf_event__process_ksymbol; 515 if (tool->bpf == NULL) 516 tool->bpf = perf_event__process_bpf; 517 if (tool->text_poke == NULL) 518 tool->text_poke = perf_event__process_text_poke; 519 if (tool->aux_output_hw_id == NULL) 520 tool->aux_output_hw_id = perf_event__process_aux_output_hw_id; 521 if (tool->read == NULL) 522 tool->read = process_event_sample_stub; 523 if (tool->throttle == NULL) 524 tool->throttle = process_event_stub; 525 if (tool->unthrottle == NULL) 526 tool->unthrottle = process_event_stub; 527 if (tool->attr == NULL) 528 tool->attr = process_event_synth_attr_stub; 529 if (tool->event_update == NULL) 530 tool->event_update = process_event_synth_event_update_stub; 531 if (tool->tracing_data == NULL) 532 tool->tracing_data = process_event_synth_tracing_data_stub; 533 if (tool->build_id == NULL) 534 tool->build_id = process_event_op2_stub; 535 if (tool->finished_round == NULL) { 536 if (tool->ordered_events) 537 tool->finished_round = process_finished_round; 538 else 539 tool->finished_round = process_finished_round_stub; 540 } 541 if (tool->id_index == NULL) 542 tool->id_index = process_event_op2_stub; 543 if (tool->auxtrace_info == NULL) 544 tool->auxtrace_info = process_event_op2_stub; 545 if (tool->auxtrace == NULL) 546 tool->auxtrace = process_event_auxtrace_stub; 547 if (tool->auxtrace_error == NULL) 548 tool->auxtrace_error = process_event_op2_stub; 549 if (tool->thread_map == NULL) 550 tool->thread_map = process_event_thread_map_stub; 551 if (tool->cpu_map == NULL) 552 tool->cpu_map = process_event_cpu_map_stub; 553 if (tool->stat_config == NULL) 554 tool->stat_config = process_event_stat_config_stub; 555 if (tool->stat == NULL) 556 tool->stat = process_stat_stub; 557 if (tool->stat_round == NULL) 558 tool->stat_round = process_stat_round_stub; 559 if (tool->time_conv == NULL) 560 tool->time_conv = process_event_time_conv_stub; 561 if (tool->feature == NULL) 562 tool->feature = process_event_op2_stub; 563 if (tool->compressed == NULL) 564 tool->compressed = perf_session__process_compressed_event; 565 } 566 567 static void swap_sample_id_all(union perf_event *event, void *data) 568 { 569 void *end = (void *) event + event->header.size; 570 int size = end - data; 571 572 BUG_ON(size % sizeof(u64)); 573 mem_bswap_64(data, size); 574 } 575 576 static void perf_event__all64_swap(union perf_event *event, 577 bool sample_id_all __maybe_unused) 578 { 579 struct perf_event_header *hdr = &event->header; 580 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); 581 } 582 583 static void perf_event__comm_swap(union perf_event *event, bool sample_id_all) 584 { 585 event->comm.pid = bswap_32(event->comm.pid); 586 event->comm.tid = bswap_32(event->comm.tid); 587 588 if (sample_id_all) { 589 void *data = &event->comm.comm; 590 591 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 592 swap_sample_id_all(event, data); 593 } 594 } 595 596 static void perf_event__mmap_swap(union perf_event *event, 597 bool sample_id_all) 598 { 599 event->mmap.pid = bswap_32(event->mmap.pid); 600 event->mmap.tid = bswap_32(event->mmap.tid); 601 event->mmap.start = bswap_64(event->mmap.start); 602 event->mmap.len = bswap_64(event->mmap.len); 603 event->mmap.pgoff = bswap_64(event->mmap.pgoff); 604 605 if (sample_id_all) { 606 void *data = &event->mmap.filename; 607 608 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 609 swap_sample_id_all(event, data); 610 } 611 } 612 613 static void perf_event__mmap2_swap(union perf_event *event, 614 bool sample_id_all) 615 { 616 event->mmap2.pid = bswap_32(event->mmap2.pid); 617 event->mmap2.tid = bswap_32(event->mmap2.tid); 618 event->mmap2.start = bswap_64(event->mmap2.start); 619 event->mmap2.len = bswap_64(event->mmap2.len); 620 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff); 621 622 if (!(event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID)) { 623 event->mmap2.maj = bswap_32(event->mmap2.maj); 624 event->mmap2.min = bswap_32(event->mmap2.min); 625 event->mmap2.ino = bswap_64(event->mmap2.ino); 626 event->mmap2.ino_generation = bswap_64(event->mmap2.ino_generation); 627 } 628 629 if (sample_id_all) { 630 void *data = &event->mmap2.filename; 631 632 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 633 swap_sample_id_all(event, data); 634 } 635 } 636 static void perf_event__task_swap(union perf_event *event, bool sample_id_all) 637 { 638 event->fork.pid = bswap_32(event->fork.pid); 639 event->fork.tid = bswap_32(event->fork.tid); 640 event->fork.ppid = bswap_32(event->fork.ppid); 641 event->fork.ptid = bswap_32(event->fork.ptid); 642 event->fork.time = bswap_64(event->fork.time); 643 644 if (sample_id_all) 645 swap_sample_id_all(event, &event->fork + 1); 646 } 647 648 static void perf_event__read_swap(union perf_event *event, bool sample_id_all) 649 { 650 event->read.pid = bswap_32(event->read.pid); 651 event->read.tid = bswap_32(event->read.tid); 652 event->read.value = bswap_64(event->read.value); 653 event->read.time_enabled = bswap_64(event->read.time_enabled); 654 event->read.time_running = bswap_64(event->read.time_running); 655 event->read.id = bswap_64(event->read.id); 656 657 if (sample_id_all) 658 swap_sample_id_all(event, &event->read + 1); 659 } 660 661 static void perf_event__aux_swap(union perf_event *event, bool sample_id_all) 662 { 663 event->aux.aux_offset = bswap_64(event->aux.aux_offset); 664 event->aux.aux_size = bswap_64(event->aux.aux_size); 665 event->aux.flags = bswap_64(event->aux.flags); 666 667 if (sample_id_all) 668 swap_sample_id_all(event, &event->aux + 1); 669 } 670 671 static void perf_event__itrace_start_swap(union perf_event *event, 672 bool sample_id_all) 673 { 674 event->itrace_start.pid = bswap_32(event->itrace_start.pid); 675 event->itrace_start.tid = bswap_32(event->itrace_start.tid); 676 677 if (sample_id_all) 678 swap_sample_id_all(event, &event->itrace_start + 1); 679 } 680 681 static void perf_event__switch_swap(union perf_event *event, bool sample_id_all) 682 { 683 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) { 684 event->context_switch.next_prev_pid = 685 bswap_32(event->context_switch.next_prev_pid); 686 event->context_switch.next_prev_tid = 687 bswap_32(event->context_switch.next_prev_tid); 688 } 689 690 if (sample_id_all) 691 swap_sample_id_all(event, &event->context_switch + 1); 692 } 693 694 static void perf_event__text_poke_swap(union perf_event *event, bool sample_id_all) 695 { 696 event->text_poke.addr = bswap_64(event->text_poke.addr); 697 event->text_poke.old_len = bswap_16(event->text_poke.old_len); 698 event->text_poke.new_len = bswap_16(event->text_poke.new_len); 699 700 if (sample_id_all) { 701 size_t len = sizeof(event->text_poke.old_len) + 702 sizeof(event->text_poke.new_len) + 703 event->text_poke.old_len + 704 event->text_poke.new_len; 705 void *data = &event->text_poke.old_len; 706 707 data += PERF_ALIGN(len, sizeof(u64)); 708 swap_sample_id_all(event, data); 709 } 710 } 711 712 static void perf_event__throttle_swap(union perf_event *event, 713 bool sample_id_all) 714 { 715 event->throttle.time = bswap_64(event->throttle.time); 716 event->throttle.id = bswap_64(event->throttle.id); 717 event->throttle.stream_id = bswap_64(event->throttle.stream_id); 718 719 if (sample_id_all) 720 swap_sample_id_all(event, &event->throttle + 1); 721 } 722 723 static void perf_event__namespaces_swap(union perf_event *event, 724 bool sample_id_all) 725 { 726 u64 i; 727 728 event->namespaces.pid = bswap_32(event->namespaces.pid); 729 event->namespaces.tid = bswap_32(event->namespaces.tid); 730 event->namespaces.nr_namespaces = bswap_64(event->namespaces.nr_namespaces); 731 732 for (i = 0; i < event->namespaces.nr_namespaces; i++) { 733 struct perf_ns_link_info *ns = &event->namespaces.link_info[i]; 734 735 ns->dev = bswap_64(ns->dev); 736 ns->ino = bswap_64(ns->ino); 737 } 738 739 if (sample_id_all) 740 swap_sample_id_all(event, &event->namespaces.link_info[i]); 741 } 742 743 static void perf_event__cgroup_swap(union perf_event *event, bool sample_id_all) 744 { 745 event->cgroup.id = bswap_64(event->cgroup.id); 746 747 if (sample_id_all) { 748 void *data = &event->cgroup.path; 749 750 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 751 swap_sample_id_all(event, data); 752 } 753 } 754 755 static u8 revbyte(u8 b) 756 { 757 int rev = (b >> 4) | ((b & 0xf) << 4); 758 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2); 759 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1); 760 return (u8) rev; 761 } 762 763 /* 764 * XXX this is hack in attempt to carry flags bitfield 765 * through endian village. ABI says: 766 * 767 * Bit-fields are allocated from right to left (least to most significant) 768 * on little-endian implementations and from left to right (most to least 769 * significant) on big-endian implementations. 770 * 771 * The above seems to be byte specific, so we need to reverse each 772 * byte of the bitfield. 'Internet' also says this might be implementation 773 * specific and we probably need proper fix and carry perf_event_attr 774 * bitfield flags in separate data file FEAT_ section. Thought this seems 775 * to work for now. 776 */ 777 static void swap_bitfield(u8 *p, unsigned len) 778 { 779 unsigned i; 780 781 for (i = 0; i < len; i++) { 782 *p = revbyte(*p); 783 p++; 784 } 785 } 786 787 /* exported for swapping attributes in file header */ 788 void perf_event__attr_swap(struct perf_event_attr *attr) 789 { 790 attr->type = bswap_32(attr->type); 791 attr->size = bswap_32(attr->size); 792 793 #define bswap_safe(f, n) \ 794 (attr->size > (offsetof(struct perf_event_attr, f) + \ 795 sizeof(attr->f) * (n))) 796 #define bswap_field(f, sz) \ 797 do { \ 798 if (bswap_safe(f, 0)) \ 799 attr->f = bswap_##sz(attr->f); \ 800 } while(0) 801 #define bswap_field_16(f) bswap_field(f, 16) 802 #define bswap_field_32(f) bswap_field(f, 32) 803 #define bswap_field_64(f) bswap_field(f, 64) 804 805 bswap_field_64(config); 806 bswap_field_64(sample_period); 807 bswap_field_64(sample_type); 808 bswap_field_64(read_format); 809 bswap_field_32(wakeup_events); 810 bswap_field_32(bp_type); 811 bswap_field_64(bp_addr); 812 bswap_field_64(bp_len); 813 bswap_field_64(branch_sample_type); 814 bswap_field_64(sample_regs_user); 815 bswap_field_32(sample_stack_user); 816 bswap_field_32(aux_watermark); 817 bswap_field_16(sample_max_stack); 818 bswap_field_32(aux_sample_size); 819 820 /* 821 * After read_format are bitfields. Check read_format because 822 * we are unable to use offsetof on bitfield. 823 */ 824 if (bswap_safe(read_format, 1)) 825 swap_bitfield((u8 *) (&attr->read_format + 1), 826 sizeof(u64)); 827 #undef bswap_field_64 828 #undef bswap_field_32 829 #undef bswap_field 830 #undef bswap_safe 831 } 832 833 static void perf_event__hdr_attr_swap(union perf_event *event, 834 bool sample_id_all __maybe_unused) 835 { 836 size_t size; 837 838 perf_event__attr_swap(&event->attr.attr); 839 840 size = event->header.size; 841 size -= (void *)&event->attr.id - (void *)event; 842 mem_bswap_64(event->attr.id, size); 843 } 844 845 static void perf_event__event_update_swap(union perf_event *event, 846 bool sample_id_all __maybe_unused) 847 { 848 event->event_update.type = bswap_64(event->event_update.type); 849 event->event_update.id = bswap_64(event->event_update.id); 850 } 851 852 static void perf_event__event_type_swap(union perf_event *event, 853 bool sample_id_all __maybe_unused) 854 { 855 event->event_type.event_type.event_id = 856 bswap_64(event->event_type.event_type.event_id); 857 } 858 859 static void perf_event__tracing_data_swap(union perf_event *event, 860 bool sample_id_all __maybe_unused) 861 { 862 event->tracing_data.size = bswap_32(event->tracing_data.size); 863 } 864 865 static void perf_event__auxtrace_info_swap(union perf_event *event, 866 bool sample_id_all __maybe_unused) 867 { 868 size_t size; 869 870 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type); 871 872 size = event->header.size; 873 size -= (void *)&event->auxtrace_info.priv - (void *)event; 874 mem_bswap_64(event->auxtrace_info.priv, size); 875 } 876 877 static void perf_event__auxtrace_swap(union perf_event *event, 878 bool sample_id_all __maybe_unused) 879 { 880 event->auxtrace.size = bswap_64(event->auxtrace.size); 881 event->auxtrace.offset = bswap_64(event->auxtrace.offset); 882 event->auxtrace.reference = bswap_64(event->auxtrace.reference); 883 event->auxtrace.idx = bswap_32(event->auxtrace.idx); 884 event->auxtrace.tid = bswap_32(event->auxtrace.tid); 885 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu); 886 } 887 888 static void perf_event__auxtrace_error_swap(union perf_event *event, 889 bool sample_id_all __maybe_unused) 890 { 891 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type); 892 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code); 893 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu); 894 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid); 895 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid); 896 event->auxtrace_error.fmt = bswap_32(event->auxtrace_error.fmt); 897 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip); 898 if (event->auxtrace_error.fmt) 899 event->auxtrace_error.time = bswap_64(event->auxtrace_error.time); 900 } 901 902 static void perf_event__thread_map_swap(union perf_event *event, 903 bool sample_id_all __maybe_unused) 904 { 905 unsigned i; 906 907 event->thread_map.nr = bswap_64(event->thread_map.nr); 908 909 for (i = 0; i < event->thread_map.nr; i++) 910 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid); 911 } 912 913 static void perf_event__cpu_map_swap(union perf_event *event, 914 bool sample_id_all __maybe_unused) 915 { 916 struct perf_record_cpu_map_data *data = &event->cpu_map.data; 917 struct cpu_map_entries *cpus; 918 struct perf_record_record_cpu_map *mask; 919 unsigned i; 920 921 data->type = bswap_16(data->type); 922 923 switch (data->type) { 924 case PERF_CPU_MAP__CPUS: 925 cpus = (struct cpu_map_entries *)data->data; 926 927 cpus->nr = bswap_16(cpus->nr); 928 929 for (i = 0; i < cpus->nr; i++) 930 cpus->cpu[i] = bswap_16(cpus->cpu[i]); 931 break; 932 case PERF_CPU_MAP__MASK: 933 mask = (struct perf_record_record_cpu_map *)data->data; 934 935 mask->nr = bswap_16(mask->nr); 936 mask->long_size = bswap_16(mask->long_size); 937 938 switch (mask->long_size) { 939 case 4: mem_bswap_32(&mask->mask, mask->nr); break; 940 case 8: mem_bswap_64(&mask->mask, mask->nr); break; 941 default: 942 pr_err("cpu_map swap: unsupported long size\n"); 943 } 944 default: 945 break; 946 } 947 } 948 949 static void perf_event__stat_config_swap(union perf_event *event, 950 bool sample_id_all __maybe_unused) 951 { 952 u64 size; 953 954 size = bswap_64(event->stat_config.nr) * sizeof(event->stat_config.data[0]); 955 size += 1; /* nr item itself */ 956 mem_bswap_64(&event->stat_config.nr, size); 957 } 958 959 static void perf_event__stat_swap(union perf_event *event, 960 bool sample_id_all __maybe_unused) 961 { 962 event->stat.id = bswap_64(event->stat.id); 963 event->stat.thread = bswap_32(event->stat.thread); 964 event->stat.cpu = bswap_32(event->stat.cpu); 965 event->stat.val = bswap_64(event->stat.val); 966 event->stat.ena = bswap_64(event->stat.ena); 967 event->stat.run = bswap_64(event->stat.run); 968 } 969 970 static void perf_event__stat_round_swap(union perf_event *event, 971 bool sample_id_all __maybe_unused) 972 { 973 event->stat_round.type = bswap_64(event->stat_round.type); 974 event->stat_round.time = bswap_64(event->stat_round.time); 975 } 976 977 static void perf_event__time_conv_swap(union perf_event *event, 978 bool sample_id_all __maybe_unused) 979 { 980 event->time_conv.time_shift = bswap_64(event->time_conv.time_shift); 981 event->time_conv.time_mult = bswap_64(event->time_conv.time_mult); 982 event->time_conv.time_zero = bswap_64(event->time_conv.time_zero); 983 984 if (event_contains(event->time_conv, time_cycles)) { 985 event->time_conv.time_cycles = bswap_64(event->time_conv.time_cycles); 986 event->time_conv.time_mask = bswap_64(event->time_conv.time_mask); 987 } 988 } 989 990 typedef void (*perf_event__swap_op)(union perf_event *event, 991 bool sample_id_all); 992 993 static perf_event__swap_op perf_event__swap_ops[] = { 994 [PERF_RECORD_MMAP] = perf_event__mmap_swap, 995 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap, 996 [PERF_RECORD_COMM] = perf_event__comm_swap, 997 [PERF_RECORD_FORK] = perf_event__task_swap, 998 [PERF_RECORD_EXIT] = perf_event__task_swap, 999 [PERF_RECORD_LOST] = perf_event__all64_swap, 1000 [PERF_RECORD_READ] = perf_event__read_swap, 1001 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap, 1002 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap, 1003 [PERF_RECORD_SAMPLE] = perf_event__all64_swap, 1004 [PERF_RECORD_AUX] = perf_event__aux_swap, 1005 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap, 1006 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap, 1007 [PERF_RECORD_SWITCH] = perf_event__switch_swap, 1008 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap, 1009 [PERF_RECORD_NAMESPACES] = perf_event__namespaces_swap, 1010 [PERF_RECORD_CGROUP] = perf_event__cgroup_swap, 1011 [PERF_RECORD_TEXT_POKE] = perf_event__text_poke_swap, 1012 [PERF_RECORD_AUX_OUTPUT_HW_ID] = perf_event__all64_swap, 1013 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, 1014 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, 1015 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, 1016 [PERF_RECORD_HEADER_BUILD_ID] = NULL, 1017 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap, 1018 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap, 1019 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap, 1020 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap, 1021 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap, 1022 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap, 1023 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap, 1024 [PERF_RECORD_STAT] = perf_event__stat_swap, 1025 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap, 1026 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap, 1027 [PERF_RECORD_TIME_CONV] = perf_event__time_conv_swap, 1028 [PERF_RECORD_HEADER_MAX] = NULL, 1029 }; 1030 1031 /* 1032 * When perf record finishes a pass on every buffers, it records this pseudo 1033 * event. 1034 * We record the max timestamp t found in the pass n. 1035 * Assuming these timestamps are monotonic across cpus, we know that if 1036 * a buffer still has events with timestamps below t, they will be all 1037 * available and then read in the pass n + 1. 1038 * Hence when we start to read the pass n + 2, we can safely flush every 1039 * events with timestamps below t. 1040 * 1041 * ============ PASS n ================= 1042 * CPU 0 | CPU 1 1043 * | 1044 * cnt1 timestamps | cnt2 timestamps 1045 * 1 | 2 1046 * 2 | 3 1047 * - | 4 <--- max recorded 1048 * 1049 * ============ PASS n + 1 ============== 1050 * CPU 0 | CPU 1 1051 * | 1052 * cnt1 timestamps | cnt2 timestamps 1053 * 3 | 5 1054 * 4 | 6 1055 * 5 | 7 <---- max recorded 1056 * 1057 * Flush every events below timestamp 4 1058 * 1059 * ============ PASS n + 2 ============== 1060 * CPU 0 | CPU 1 1061 * | 1062 * cnt1 timestamps | cnt2 timestamps 1063 * 6 | 8 1064 * 7 | 9 1065 * - | 10 1066 * 1067 * Flush every events below timestamp 7 1068 * etc... 1069 */ 1070 static int process_finished_round(struct perf_tool *tool __maybe_unused, 1071 union perf_event *event __maybe_unused, 1072 struct ordered_events *oe) 1073 { 1074 if (dump_trace) 1075 fprintf(stdout, "\n"); 1076 return ordered_events__flush(oe, OE_FLUSH__ROUND); 1077 } 1078 1079 int perf_session__queue_event(struct perf_session *s, union perf_event *event, 1080 u64 timestamp, u64 file_offset, const char *file_path) 1081 { 1082 return ordered_events__queue(&s->ordered_events, event, timestamp, file_offset, file_path); 1083 } 1084 1085 static void callchain__lbr_callstack_printf(struct perf_sample *sample) 1086 { 1087 struct ip_callchain *callchain = sample->callchain; 1088 struct branch_stack *lbr_stack = sample->branch_stack; 1089 struct branch_entry *entries = perf_sample__branch_entries(sample); 1090 u64 kernel_callchain_nr = callchain->nr; 1091 unsigned int i; 1092 1093 for (i = 0; i < kernel_callchain_nr; i++) { 1094 if (callchain->ips[i] == PERF_CONTEXT_USER) 1095 break; 1096 } 1097 1098 if ((i != kernel_callchain_nr) && lbr_stack->nr) { 1099 u64 total_nr; 1100 /* 1101 * LBR callstack can only get user call chain, 1102 * i is kernel call chain number, 1103 * 1 is PERF_CONTEXT_USER. 1104 * 1105 * The user call chain is stored in LBR registers. 1106 * LBR are pair registers. The caller is stored 1107 * in "from" register, while the callee is stored 1108 * in "to" register. 1109 * For example, there is a call stack 1110 * "A"->"B"->"C"->"D". 1111 * The LBR registers will be recorded like 1112 * "C"->"D", "B"->"C", "A"->"B". 1113 * So only the first "to" register and all "from" 1114 * registers are needed to construct the whole stack. 1115 */ 1116 total_nr = i + 1 + lbr_stack->nr + 1; 1117 kernel_callchain_nr = i + 1; 1118 1119 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr); 1120 1121 for (i = 0; i < kernel_callchain_nr; i++) 1122 printf("..... %2d: %016" PRIx64 "\n", 1123 i, callchain->ips[i]); 1124 1125 printf("..... %2d: %016" PRIx64 "\n", 1126 (int)(kernel_callchain_nr), entries[0].to); 1127 for (i = 0; i < lbr_stack->nr; i++) 1128 printf("..... %2d: %016" PRIx64 "\n", 1129 (int)(i + kernel_callchain_nr + 1), entries[i].from); 1130 } 1131 } 1132 1133 static void callchain__printf(struct evsel *evsel, 1134 struct perf_sample *sample) 1135 { 1136 unsigned int i; 1137 struct ip_callchain *callchain = sample->callchain; 1138 1139 if (evsel__has_branch_callstack(evsel)) 1140 callchain__lbr_callstack_printf(sample); 1141 1142 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr); 1143 1144 for (i = 0; i < callchain->nr; i++) 1145 printf("..... %2d: %016" PRIx64 "\n", 1146 i, callchain->ips[i]); 1147 } 1148 1149 static void branch_stack__printf(struct perf_sample *sample, bool callstack) 1150 { 1151 struct branch_entry *entries = perf_sample__branch_entries(sample); 1152 uint64_t i; 1153 1154 printf("%s: nr:%" PRIu64 "\n", 1155 !callstack ? "... branch stack" : "... branch callstack", 1156 sample->branch_stack->nr); 1157 1158 for (i = 0; i < sample->branch_stack->nr; i++) { 1159 struct branch_entry *e = &entries[i]; 1160 1161 if (!callstack) { 1162 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x\n", 1163 i, e->from, e->to, 1164 (unsigned short)e->flags.cycles, 1165 e->flags.mispred ? "M" : " ", 1166 e->flags.predicted ? "P" : " ", 1167 e->flags.abort ? "A" : " ", 1168 e->flags.in_tx ? "T" : " ", 1169 (unsigned)e->flags.reserved); 1170 } else { 1171 printf("..... %2"PRIu64": %016" PRIx64 "\n", 1172 i, i > 0 ? e->from : e->to); 1173 } 1174 } 1175 } 1176 1177 static void regs_dump__printf(u64 mask, u64 *regs, const char *arch) 1178 { 1179 unsigned rid, i = 0; 1180 1181 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) { 1182 u64 val = regs[i++]; 1183 1184 printf(".... %-5s 0x%016" PRIx64 "\n", 1185 perf_reg_name(rid, arch), val); 1186 } 1187 } 1188 1189 static const char *regs_abi[] = { 1190 [PERF_SAMPLE_REGS_ABI_NONE] = "none", 1191 [PERF_SAMPLE_REGS_ABI_32] = "32-bit", 1192 [PERF_SAMPLE_REGS_ABI_64] = "64-bit", 1193 }; 1194 1195 static inline const char *regs_dump_abi(struct regs_dump *d) 1196 { 1197 if (d->abi > PERF_SAMPLE_REGS_ABI_64) 1198 return "unknown"; 1199 1200 return regs_abi[d->abi]; 1201 } 1202 1203 static void regs__printf(const char *type, struct regs_dump *regs, const char *arch) 1204 { 1205 u64 mask = regs->mask; 1206 1207 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n", 1208 type, 1209 mask, 1210 regs_dump_abi(regs)); 1211 1212 regs_dump__printf(mask, regs->regs, arch); 1213 } 1214 1215 static void regs_user__printf(struct perf_sample *sample, const char *arch) 1216 { 1217 struct regs_dump *user_regs = &sample->user_regs; 1218 1219 if (user_regs->regs) 1220 regs__printf("user", user_regs, arch); 1221 } 1222 1223 static void regs_intr__printf(struct perf_sample *sample, const char *arch) 1224 { 1225 struct regs_dump *intr_regs = &sample->intr_regs; 1226 1227 if (intr_regs->regs) 1228 regs__printf("intr", intr_regs, arch); 1229 } 1230 1231 static void stack_user__printf(struct stack_dump *dump) 1232 { 1233 printf("... ustack: size %" PRIu64 ", offset 0x%x\n", 1234 dump->size, dump->offset); 1235 } 1236 1237 static void evlist__print_tstamp(struct evlist *evlist, union perf_event *event, struct perf_sample *sample) 1238 { 1239 u64 sample_type = __evlist__combined_sample_type(evlist); 1240 1241 if (event->header.type != PERF_RECORD_SAMPLE && 1242 !evlist__sample_id_all(evlist)) { 1243 fputs("-1 -1 ", stdout); 1244 return; 1245 } 1246 1247 if ((sample_type & PERF_SAMPLE_CPU)) 1248 printf("%u ", sample->cpu); 1249 1250 if (sample_type & PERF_SAMPLE_TIME) 1251 printf("%" PRIu64 " ", sample->time); 1252 } 1253 1254 static void sample_read__printf(struct perf_sample *sample, u64 read_format) 1255 { 1256 printf("... sample_read:\n"); 1257 1258 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 1259 printf("...... time enabled %016" PRIx64 "\n", 1260 sample->read.time_enabled); 1261 1262 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 1263 printf("...... time running %016" PRIx64 "\n", 1264 sample->read.time_running); 1265 1266 if (read_format & PERF_FORMAT_GROUP) { 1267 u64 i; 1268 1269 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr); 1270 1271 for (i = 0; i < sample->read.group.nr; i++) { 1272 struct sample_read_value *value; 1273 1274 value = &sample->read.group.values[i]; 1275 printf("..... id %016" PRIx64 1276 ", value %016" PRIx64 "\n", 1277 value->id, value->value); 1278 } 1279 } else 1280 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n", 1281 sample->read.one.id, sample->read.one.value); 1282 } 1283 1284 static void dump_event(struct evlist *evlist, union perf_event *event, 1285 u64 file_offset, struct perf_sample *sample, 1286 const char *file_path) 1287 { 1288 if (!dump_trace) 1289 return; 1290 1291 printf("\n%#" PRIx64 "@%s [%#x]: event: %d\n", 1292 file_offset, file_path, event->header.size, event->header.type); 1293 1294 trace_event(event); 1295 if (event->header.type == PERF_RECORD_SAMPLE && evlist->trace_event_sample_raw) 1296 evlist->trace_event_sample_raw(evlist, event, sample); 1297 1298 if (sample) 1299 evlist__print_tstamp(evlist, event, sample); 1300 1301 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, 1302 event->header.size, perf_event__name(event->header.type)); 1303 } 1304 1305 char *get_page_size_name(u64 size, char *str) 1306 { 1307 if (!size || !unit_number__scnprintf(str, PAGE_SIZE_NAME_LEN, size)) 1308 snprintf(str, PAGE_SIZE_NAME_LEN, "%s", "N/A"); 1309 1310 return str; 1311 } 1312 1313 static void dump_sample(struct evsel *evsel, union perf_event *event, 1314 struct perf_sample *sample, const char *arch) 1315 { 1316 u64 sample_type; 1317 char str[PAGE_SIZE_NAME_LEN]; 1318 1319 if (!dump_trace) 1320 return; 1321 1322 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", 1323 event->header.misc, sample->pid, sample->tid, sample->ip, 1324 sample->period, sample->addr); 1325 1326 sample_type = evsel->core.attr.sample_type; 1327 1328 if (evsel__has_callchain(evsel)) 1329 callchain__printf(evsel, sample); 1330 1331 if (evsel__has_br_stack(evsel)) 1332 branch_stack__printf(sample, evsel__has_branch_callstack(evsel)); 1333 1334 if (sample_type & PERF_SAMPLE_REGS_USER) 1335 regs_user__printf(sample, arch); 1336 1337 if (sample_type & PERF_SAMPLE_REGS_INTR) 1338 regs_intr__printf(sample, arch); 1339 1340 if (sample_type & PERF_SAMPLE_STACK_USER) 1341 stack_user__printf(&sample->user_stack); 1342 1343 if (sample_type & PERF_SAMPLE_WEIGHT_TYPE) { 1344 printf("... weight: %" PRIu64 "", sample->weight); 1345 if (sample_type & PERF_SAMPLE_WEIGHT_STRUCT) { 1346 printf(",0x%"PRIx16"", sample->ins_lat); 1347 printf(",0x%"PRIx16"", sample->p_stage_cyc); 1348 } 1349 printf("\n"); 1350 } 1351 1352 if (sample_type & PERF_SAMPLE_DATA_SRC) 1353 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src); 1354 1355 if (sample_type & PERF_SAMPLE_PHYS_ADDR) 1356 printf(" .. phys_addr: 0x%"PRIx64"\n", sample->phys_addr); 1357 1358 if (sample_type & PERF_SAMPLE_DATA_PAGE_SIZE) 1359 printf(" .. data page size: %s\n", get_page_size_name(sample->data_page_size, str)); 1360 1361 if (sample_type & PERF_SAMPLE_CODE_PAGE_SIZE) 1362 printf(" .. code page size: %s\n", get_page_size_name(sample->code_page_size, str)); 1363 1364 if (sample_type & PERF_SAMPLE_TRANSACTION) 1365 printf("... transaction: %" PRIx64 "\n", sample->transaction); 1366 1367 if (sample_type & PERF_SAMPLE_READ) 1368 sample_read__printf(sample, evsel->core.attr.read_format); 1369 } 1370 1371 static void dump_read(struct evsel *evsel, union perf_event *event) 1372 { 1373 struct perf_record_read *read_event = &event->read; 1374 u64 read_format; 1375 1376 if (!dump_trace) 1377 return; 1378 1379 printf(": %d %d %s %" PRI_lu64 "\n", event->read.pid, event->read.tid, 1380 evsel__name(evsel), event->read.value); 1381 1382 if (!evsel) 1383 return; 1384 1385 read_format = evsel->core.attr.read_format; 1386 1387 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 1388 printf("... time enabled : %" PRI_lu64 "\n", read_event->time_enabled); 1389 1390 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 1391 printf("... time running : %" PRI_lu64 "\n", read_event->time_running); 1392 1393 if (read_format & PERF_FORMAT_ID) 1394 printf("... id : %" PRI_lu64 "\n", read_event->id); 1395 } 1396 1397 static struct machine *machines__find_for_cpumode(struct machines *machines, 1398 union perf_event *event, 1399 struct perf_sample *sample) 1400 { 1401 if (perf_guest && 1402 ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || 1403 (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) { 1404 u32 pid; 1405 1406 if (event->header.type == PERF_RECORD_MMAP 1407 || event->header.type == PERF_RECORD_MMAP2) 1408 pid = event->mmap.pid; 1409 else 1410 pid = sample->pid; 1411 1412 return machines__find_guest(machines, pid); 1413 } 1414 1415 return &machines->host; 1416 } 1417 1418 static int deliver_sample_value(struct evlist *evlist, 1419 struct perf_tool *tool, 1420 union perf_event *event, 1421 struct perf_sample *sample, 1422 struct sample_read_value *v, 1423 struct machine *machine) 1424 { 1425 struct perf_sample_id *sid = evlist__id2sid(evlist, v->id); 1426 struct evsel *evsel; 1427 1428 if (sid) { 1429 sample->id = v->id; 1430 sample->period = v->value - sid->period; 1431 sid->period = v->value; 1432 } 1433 1434 if (!sid || sid->evsel == NULL) { 1435 ++evlist->stats.nr_unknown_id; 1436 return 0; 1437 } 1438 1439 /* 1440 * There's no reason to deliver sample 1441 * for zero period, bail out. 1442 */ 1443 if (!sample->period) 1444 return 0; 1445 1446 evsel = container_of(sid->evsel, struct evsel, core); 1447 return tool->sample(tool, event, sample, evsel, machine); 1448 } 1449 1450 static int deliver_sample_group(struct evlist *evlist, 1451 struct perf_tool *tool, 1452 union perf_event *event, 1453 struct perf_sample *sample, 1454 struct machine *machine) 1455 { 1456 int ret = -EINVAL; 1457 u64 i; 1458 1459 for (i = 0; i < sample->read.group.nr; i++) { 1460 ret = deliver_sample_value(evlist, tool, event, sample, 1461 &sample->read.group.values[i], 1462 machine); 1463 if (ret) 1464 break; 1465 } 1466 1467 return ret; 1468 } 1469 1470 static int evlist__deliver_sample(struct evlist *evlist, struct perf_tool *tool, 1471 union perf_event *event, struct perf_sample *sample, 1472 struct evsel *evsel, struct machine *machine) 1473 { 1474 /* We know evsel != NULL. */ 1475 u64 sample_type = evsel->core.attr.sample_type; 1476 u64 read_format = evsel->core.attr.read_format; 1477 1478 /* Standard sample delivery. */ 1479 if (!(sample_type & PERF_SAMPLE_READ)) 1480 return tool->sample(tool, event, sample, evsel, machine); 1481 1482 /* For PERF_SAMPLE_READ we have either single or group mode. */ 1483 if (read_format & PERF_FORMAT_GROUP) 1484 return deliver_sample_group(evlist, tool, event, sample, 1485 machine); 1486 else 1487 return deliver_sample_value(evlist, tool, event, sample, 1488 &sample->read.one, machine); 1489 } 1490 1491 static int machines__deliver_event(struct machines *machines, 1492 struct evlist *evlist, 1493 union perf_event *event, 1494 struct perf_sample *sample, 1495 struct perf_tool *tool, u64 file_offset, 1496 const char *file_path) 1497 { 1498 struct evsel *evsel; 1499 struct machine *machine; 1500 1501 dump_event(evlist, event, file_offset, sample, file_path); 1502 1503 evsel = evlist__id2evsel(evlist, sample->id); 1504 1505 machine = machines__find_for_cpumode(machines, event, sample); 1506 1507 switch (event->header.type) { 1508 case PERF_RECORD_SAMPLE: 1509 if (evsel == NULL) { 1510 ++evlist->stats.nr_unknown_id; 1511 return 0; 1512 } 1513 if (machine == NULL) { 1514 ++evlist->stats.nr_unprocessable_samples; 1515 dump_sample(evsel, event, sample, perf_env__arch(NULL)); 1516 return 0; 1517 } 1518 dump_sample(evsel, event, sample, perf_env__arch(machine->env)); 1519 return evlist__deliver_sample(evlist, tool, event, sample, evsel, machine); 1520 case PERF_RECORD_MMAP: 1521 return tool->mmap(tool, event, sample, machine); 1522 case PERF_RECORD_MMAP2: 1523 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT) 1524 ++evlist->stats.nr_proc_map_timeout; 1525 return tool->mmap2(tool, event, sample, machine); 1526 case PERF_RECORD_COMM: 1527 return tool->comm(tool, event, sample, machine); 1528 case PERF_RECORD_NAMESPACES: 1529 return tool->namespaces(tool, event, sample, machine); 1530 case PERF_RECORD_CGROUP: 1531 return tool->cgroup(tool, event, sample, machine); 1532 case PERF_RECORD_FORK: 1533 return tool->fork(tool, event, sample, machine); 1534 case PERF_RECORD_EXIT: 1535 return tool->exit(tool, event, sample, machine); 1536 case PERF_RECORD_LOST: 1537 if (tool->lost == perf_event__process_lost) 1538 evlist->stats.total_lost += event->lost.lost; 1539 return tool->lost(tool, event, sample, machine); 1540 case PERF_RECORD_LOST_SAMPLES: 1541 if (tool->lost_samples == perf_event__process_lost_samples) 1542 evlist->stats.total_lost_samples += event->lost_samples.lost; 1543 return tool->lost_samples(tool, event, sample, machine); 1544 case PERF_RECORD_READ: 1545 dump_read(evsel, event); 1546 return tool->read(tool, event, sample, evsel, machine); 1547 case PERF_RECORD_THROTTLE: 1548 return tool->throttle(tool, event, sample, machine); 1549 case PERF_RECORD_UNTHROTTLE: 1550 return tool->unthrottle(tool, event, sample, machine); 1551 case PERF_RECORD_AUX: 1552 if (tool->aux == perf_event__process_aux) { 1553 if (event->aux.flags & PERF_AUX_FLAG_TRUNCATED) 1554 evlist->stats.total_aux_lost += 1; 1555 if (event->aux.flags & PERF_AUX_FLAG_PARTIAL) 1556 evlist->stats.total_aux_partial += 1; 1557 if (event->aux.flags & PERF_AUX_FLAG_COLLISION) 1558 evlist->stats.total_aux_collision += 1; 1559 } 1560 return tool->aux(tool, event, sample, machine); 1561 case PERF_RECORD_ITRACE_START: 1562 return tool->itrace_start(tool, event, sample, machine); 1563 case PERF_RECORD_SWITCH: 1564 case PERF_RECORD_SWITCH_CPU_WIDE: 1565 return tool->context_switch(tool, event, sample, machine); 1566 case PERF_RECORD_KSYMBOL: 1567 return tool->ksymbol(tool, event, sample, machine); 1568 case PERF_RECORD_BPF_EVENT: 1569 return tool->bpf(tool, event, sample, machine); 1570 case PERF_RECORD_TEXT_POKE: 1571 return tool->text_poke(tool, event, sample, machine); 1572 case PERF_RECORD_AUX_OUTPUT_HW_ID: 1573 return tool->aux_output_hw_id(tool, event, sample, machine); 1574 default: 1575 ++evlist->stats.nr_unknown_events; 1576 return -1; 1577 } 1578 } 1579 1580 static int perf_session__deliver_event(struct perf_session *session, 1581 union perf_event *event, 1582 struct perf_tool *tool, 1583 u64 file_offset, 1584 const char *file_path) 1585 { 1586 struct perf_sample sample; 1587 int ret = evlist__parse_sample(session->evlist, event, &sample); 1588 1589 if (ret) { 1590 pr_err("Can't parse sample, err = %d\n", ret); 1591 return ret; 1592 } 1593 1594 ret = auxtrace__process_event(session, event, &sample, tool); 1595 if (ret < 0) 1596 return ret; 1597 if (ret > 0) 1598 return 0; 1599 1600 ret = machines__deliver_event(&session->machines, session->evlist, 1601 event, &sample, tool, file_offset, file_path); 1602 1603 if (dump_trace && sample.aux_sample.size) 1604 auxtrace__dump_auxtrace_sample(session, &sample); 1605 1606 return ret; 1607 } 1608 1609 static s64 perf_session__process_user_event(struct perf_session *session, 1610 union perf_event *event, 1611 u64 file_offset, 1612 const char *file_path) 1613 { 1614 struct ordered_events *oe = &session->ordered_events; 1615 struct perf_tool *tool = session->tool; 1616 struct perf_sample sample = { .time = 0, }; 1617 int fd = perf_data__fd(session->data); 1618 int err; 1619 1620 if (event->header.type != PERF_RECORD_COMPRESSED || 1621 tool->compressed == perf_session__process_compressed_event_stub) 1622 dump_event(session->evlist, event, file_offset, &sample, file_path); 1623 1624 /* These events are processed right away */ 1625 switch (event->header.type) { 1626 case PERF_RECORD_HEADER_ATTR: 1627 err = tool->attr(tool, event, &session->evlist); 1628 if (err == 0) { 1629 perf_session__set_id_hdr_size(session); 1630 perf_session__set_comm_exec(session); 1631 } 1632 return err; 1633 case PERF_RECORD_EVENT_UPDATE: 1634 return tool->event_update(tool, event, &session->evlist); 1635 case PERF_RECORD_HEADER_EVENT_TYPE: 1636 /* 1637 * Deprecated, but we need to handle it for sake 1638 * of old data files create in pipe mode. 1639 */ 1640 return 0; 1641 case PERF_RECORD_HEADER_TRACING_DATA: 1642 /* 1643 * Setup for reading amidst mmap, but only when we 1644 * are in 'file' mode. The 'pipe' fd is in proper 1645 * place already. 1646 */ 1647 if (!perf_data__is_pipe(session->data)) 1648 lseek(fd, file_offset, SEEK_SET); 1649 return tool->tracing_data(session, event); 1650 case PERF_RECORD_HEADER_BUILD_ID: 1651 return tool->build_id(session, event); 1652 case PERF_RECORD_FINISHED_ROUND: 1653 return tool->finished_round(tool, event, oe); 1654 case PERF_RECORD_ID_INDEX: 1655 return tool->id_index(session, event); 1656 case PERF_RECORD_AUXTRACE_INFO: 1657 return tool->auxtrace_info(session, event); 1658 case PERF_RECORD_AUXTRACE: 1659 /* setup for reading amidst mmap */ 1660 lseek(fd, file_offset + event->header.size, SEEK_SET); 1661 return tool->auxtrace(session, event); 1662 case PERF_RECORD_AUXTRACE_ERROR: 1663 perf_session__auxtrace_error_inc(session, event); 1664 return tool->auxtrace_error(session, event); 1665 case PERF_RECORD_THREAD_MAP: 1666 return tool->thread_map(session, event); 1667 case PERF_RECORD_CPU_MAP: 1668 return tool->cpu_map(session, event); 1669 case PERF_RECORD_STAT_CONFIG: 1670 return tool->stat_config(session, event); 1671 case PERF_RECORD_STAT: 1672 return tool->stat(session, event); 1673 case PERF_RECORD_STAT_ROUND: 1674 return tool->stat_round(session, event); 1675 case PERF_RECORD_TIME_CONV: 1676 session->time_conv = event->time_conv; 1677 return tool->time_conv(session, event); 1678 case PERF_RECORD_HEADER_FEATURE: 1679 return tool->feature(session, event); 1680 case PERF_RECORD_COMPRESSED: 1681 err = tool->compressed(session, event, file_offset, file_path); 1682 if (err) 1683 dump_event(session->evlist, event, file_offset, &sample, file_path); 1684 return err; 1685 default: 1686 return -EINVAL; 1687 } 1688 } 1689 1690 int perf_session__deliver_synth_event(struct perf_session *session, 1691 union perf_event *event, 1692 struct perf_sample *sample) 1693 { 1694 struct evlist *evlist = session->evlist; 1695 struct perf_tool *tool = session->tool; 1696 1697 events_stats__inc(&evlist->stats, event->header.type); 1698 1699 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1700 return perf_session__process_user_event(session, event, 0, NULL); 1701 1702 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0, NULL); 1703 } 1704 1705 static void event_swap(union perf_event *event, bool sample_id_all) 1706 { 1707 perf_event__swap_op swap; 1708 1709 swap = perf_event__swap_ops[event->header.type]; 1710 if (swap) 1711 swap(event, sample_id_all); 1712 } 1713 1714 int perf_session__peek_event(struct perf_session *session, off_t file_offset, 1715 void *buf, size_t buf_sz, 1716 union perf_event **event_ptr, 1717 struct perf_sample *sample) 1718 { 1719 union perf_event *event; 1720 size_t hdr_sz, rest; 1721 int fd; 1722 1723 if (session->one_mmap && !session->header.needs_swap) { 1724 event = file_offset - session->one_mmap_offset + 1725 session->one_mmap_addr; 1726 goto out_parse_sample; 1727 } 1728 1729 if (perf_data__is_pipe(session->data)) 1730 return -1; 1731 1732 fd = perf_data__fd(session->data); 1733 hdr_sz = sizeof(struct perf_event_header); 1734 1735 if (buf_sz < hdr_sz) 1736 return -1; 1737 1738 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 || 1739 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz) 1740 return -1; 1741 1742 event = (union perf_event *)buf; 1743 1744 if (session->header.needs_swap) 1745 perf_event_header__bswap(&event->header); 1746 1747 if (event->header.size < hdr_sz || event->header.size > buf_sz) 1748 return -1; 1749 1750 buf += hdr_sz; 1751 rest = event->header.size - hdr_sz; 1752 1753 if (readn(fd, buf, rest) != (ssize_t)rest) 1754 return -1; 1755 1756 if (session->header.needs_swap) 1757 event_swap(event, evlist__sample_id_all(session->evlist)); 1758 1759 out_parse_sample: 1760 1761 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START && 1762 evlist__parse_sample(session->evlist, event, sample)) 1763 return -1; 1764 1765 *event_ptr = event; 1766 1767 return 0; 1768 } 1769 1770 int perf_session__peek_events(struct perf_session *session, u64 offset, 1771 u64 size, peek_events_cb_t cb, void *data) 1772 { 1773 u64 max_offset = offset + size; 1774 char buf[PERF_SAMPLE_MAX_SIZE]; 1775 union perf_event *event; 1776 int err; 1777 1778 do { 1779 err = perf_session__peek_event(session, offset, buf, 1780 PERF_SAMPLE_MAX_SIZE, &event, 1781 NULL); 1782 if (err) 1783 return err; 1784 1785 err = cb(session, event, offset, data); 1786 if (err) 1787 return err; 1788 1789 offset += event->header.size; 1790 if (event->header.type == PERF_RECORD_AUXTRACE) 1791 offset += event->auxtrace.size; 1792 1793 } while (offset < max_offset); 1794 1795 return err; 1796 } 1797 1798 static s64 perf_session__process_event(struct perf_session *session, 1799 union perf_event *event, u64 file_offset, 1800 const char *file_path) 1801 { 1802 struct evlist *evlist = session->evlist; 1803 struct perf_tool *tool = session->tool; 1804 int ret; 1805 1806 if (session->header.needs_swap) 1807 event_swap(event, evlist__sample_id_all(evlist)); 1808 1809 if (event->header.type >= PERF_RECORD_HEADER_MAX) 1810 return -EINVAL; 1811 1812 events_stats__inc(&evlist->stats, event->header.type); 1813 1814 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1815 return perf_session__process_user_event(session, event, file_offset, file_path); 1816 1817 if (tool->ordered_events) { 1818 u64 timestamp = -1ULL; 1819 1820 ret = evlist__parse_sample_timestamp(evlist, event, ×tamp); 1821 if (ret && ret != -1) 1822 return ret; 1823 1824 ret = perf_session__queue_event(session, event, timestamp, file_offset, file_path); 1825 if (ret != -ETIME) 1826 return ret; 1827 } 1828 1829 return perf_session__deliver_event(session, event, tool, file_offset, file_path); 1830 } 1831 1832 void perf_event_header__bswap(struct perf_event_header *hdr) 1833 { 1834 hdr->type = bswap_32(hdr->type); 1835 hdr->misc = bswap_16(hdr->misc); 1836 hdr->size = bswap_16(hdr->size); 1837 } 1838 1839 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) 1840 { 1841 return machine__findnew_thread(&session->machines.host, -1, pid); 1842 } 1843 1844 int perf_session__register_idle_thread(struct perf_session *session) 1845 { 1846 struct thread *thread = machine__idle_thread(&session->machines.host); 1847 1848 /* machine__idle_thread() got the thread, so put it */ 1849 thread__put(thread); 1850 return thread ? 0 : -1; 1851 } 1852 1853 static void 1854 perf_session__warn_order(const struct perf_session *session) 1855 { 1856 const struct ordered_events *oe = &session->ordered_events; 1857 struct evsel *evsel; 1858 bool should_warn = true; 1859 1860 evlist__for_each_entry(session->evlist, evsel) { 1861 if (evsel->core.attr.write_backward) 1862 should_warn = false; 1863 } 1864 1865 if (!should_warn) 1866 return; 1867 if (oe->nr_unordered_events != 0) 1868 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events); 1869 } 1870 1871 static void perf_session__warn_about_errors(const struct perf_session *session) 1872 { 1873 const struct events_stats *stats = &session->evlist->stats; 1874 1875 if (session->tool->lost == perf_event__process_lost && 1876 stats->nr_events[PERF_RECORD_LOST] != 0) { 1877 ui__warning("Processed %d events and lost %d chunks!\n\n" 1878 "Check IO/CPU overload!\n\n", 1879 stats->nr_events[0], 1880 stats->nr_events[PERF_RECORD_LOST]); 1881 } 1882 1883 if (session->tool->lost_samples == perf_event__process_lost_samples) { 1884 double drop_rate; 1885 1886 drop_rate = (double)stats->total_lost_samples / 1887 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples); 1888 if (drop_rate > 0.05) { 1889 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%%!\n\n", 1890 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples, 1891 drop_rate * 100.0); 1892 } 1893 } 1894 1895 if (session->tool->aux == perf_event__process_aux && 1896 stats->total_aux_lost != 0) { 1897 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n", 1898 stats->total_aux_lost, 1899 stats->nr_events[PERF_RECORD_AUX]); 1900 } 1901 1902 if (session->tool->aux == perf_event__process_aux && 1903 stats->total_aux_partial != 0) { 1904 bool vmm_exclusive = false; 1905 1906 (void)sysfs__read_bool("module/kvm_intel/parameters/vmm_exclusive", 1907 &vmm_exclusive); 1908 1909 ui__warning("AUX data had gaps in it %" PRIu64 " times out of %u!\n\n" 1910 "Are you running a KVM guest in the background?%s\n\n", 1911 stats->total_aux_partial, 1912 stats->nr_events[PERF_RECORD_AUX], 1913 vmm_exclusive ? 1914 "\nReloading kvm_intel module with vmm_exclusive=0\n" 1915 "will reduce the gaps to only guest's timeslices." : 1916 ""); 1917 } 1918 1919 if (session->tool->aux == perf_event__process_aux && 1920 stats->total_aux_collision != 0) { 1921 ui__warning("AUX data detected collision %" PRIu64 " times out of %u!\n\n", 1922 stats->total_aux_collision, 1923 stats->nr_events[PERF_RECORD_AUX]); 1924 } 1925 1926 if (stats->nr_unknown_events != 0) { 1927 ui__warning("Found %u unknown events!\n\n" 1928 "Is this an older tool processing a perf.data " 1929 "file generated by a more recent tool?\n\n" 1930 "If that is not the case, consider " 1931 "reporting to linux-kernel@vger.kernel.org.\n\n", 1932 stats->nr_unknown_events); 1933 } 1934 1935 if (stats->nr_unknown_id != 0) { 1936 ui__warning("%u samples with id not present in the header\n", 1937 stats->nr_unknown_id); 1938 } 1939 1940 if (stats->nr_invalid_chains != 0) { 1941 ui__warning("Found invalid callchains!\n\n" 1942 "%u out of %u events were discarded for this reason.\n\n" 1943 "Consider reporting to linux-kernel@vger.kernel.org.\n\n", 1944 stats->nr_invalid_chains, 1945 stats->nr_events[PERF_RECORD_SAMPLE]); 1946 } 1947 1948 if (stats->nr_unprocessable_samples != 0) { 1949 ui__warning("%u unprocessable samples recorded.\n" 1950 "Do you have a KVM guest running and not using 'perf kvm'?\n", 1951 stats->nr_unprocessable_samples); 1952 } 1953 1954 perf_session__warn_order(session); 1955 1956 events_stats__auxtrace_error_warn(stats); 1957 1958 if (stats->nr_proc_map_timeout != 0) { 1959 ui__warning("%d map information files for pre-existing threads were\n" 1960 "not processed, if there are samples for addresses they\n" 1961 "will not be resolved, you may find out which are these\n" 1962 "threads by running with -v and redirecting the output\n" 1963 "to a file.\n" 1964 "The time limit to process proc map is too short?\n" 1965 "Increase it by --proc-map-timeout\n", 1966 stats->nr_proc_map_timeout); 1967 } 1968 } 1969 1970 static int perf_session__flush_thread_stack(struct thread *thread, 1971 void *p __maybe_unused) 1972 { 1973 return thread_stack__flush(thread); 1974 } 1975 1976 static int perf_session__flush_thread_stacks(struct perf_session *session) 1977 { 1978 return machines__for_each_thread(&session->machines, 1979 perf_session__flush_thread_stack, 1980 NULL); 1981 } 1982 1983 volatile int session_done; 1984 1985 static int __perf_session__process_decomp_events(struct perf_session *session); 1986 1987 static int __perf_session__process_pipe_events(struct perf_session *session) 1988 { 1989 struct ordered_events *oe = &session->ordered_events; 1990 struct perf_tool *tool = session->tool; 1991 union perf_event *event; 1992 uint32_t size, cur_size = 0; 1993 void *buf = NULL; 1994 s64 skip = 0; 1995 u64 head; 1996 ssize_t err; 1997 void *p; 1998 1999 perf_tool__fill_defaults(tool); 2000 2001 head = 0; 2002 cur_size = sizeof(union perf_event); 2003 2004 buf = malloc(cur_size); 2005 if (!buf) 2006 return -errno; 2007 ordered_events__set_copy_on_queue(oe, true); 2008 more: 2009 event = buf; 2010 err = perf_data__read(session->data, event, 2011 sizeof(struct perf_event_header)); 2012 if (err <= 0) { 2013 if (err == 0) 2014 goto done; 2015 2016 pr_err("failed to read event header\n"); 2017 goto out_err; 2018 } 2019 2020 if (session->header.needs_swap) 2021 perf_event_header__bswap(&event->header); 2022 2023 size = event->header.size; 2024 if (size < sizeof(struct perf_event_header)) { 2025 pr_err("bad event header size\n"); 2026 goto out_err; 2027 } 2028 2029 if (size > cur_size) { 2030 void *new = realloc(buf, size); 2031 if (!new) { 2032 pr_err("failed to allocate memory to read event\n"); 2033 goto out_err; 2034 } 2035 buf = new; 2036 cur_size = size; 2037 event = buf; 2038 } 2039 p = event; 2040 p += sizeof(struct perf_event_header); 2041 2042 if (size - sizeof(struct perf_event_header)) { 2043 err = perf_data__read(session->data, p, 2044 size - sizeof(struct perf_event_header)); 2045 if (err <= 0) { 2046 if (err == 0) { 2047 pr_err("unexpected end of event stream\n"); 2048 goto done; 2049 } 2050 2051 pr_err("failed to read event data\n"); 2052 goto out_err; 2053 } 2054 } 2055 2056 if ((skip = perf_session__process_event(session, event, head, "pipe")) < 0) { 2057 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 2058 head, event->header.size, event->header.type); 2059 err = -EINVAL; 2060 goto out_err; 2061 } 2062 2063 head += size; 2064 2065 if (skip > 0) 2066 head += skip; 2067 2068 err = __perf_session__process_decomp_events(session); 2069 if (err) 2070 goto out_err; 2071 2072 if (!session_done()) 2073 goto more; 2074 done: 2075 /* do the final flush for ordered samples */ 2076 err = ordered_events__flush(oe, OE_FLUSH__FINAL); 2077 if (err) 2078 goto out_err; 2079 err = auxtrace__flush_events(session, tool); 2080 if (err) 2081 goto out_err; 2082 err = perf_session__flush_thread_stacks(session); 2083 out_err: 2084 free(buf); 2085 if (!tool->no_warn) 2086 perf_session__warn_about_errors(session); 2087 ordered_events__free(&session->ordered_events); 2088 auxtrace__free_events(session); 2089 return err; 2090 } 2091 2092 static union perf_event * 2093 prefetch_event(char *buf, u64 head, size_t mmap_size, 2094 bool needs_swap, union perf_event *error) 2095 { 2096 union perf_event *event; 2097 2098 /* 2099 * Ensure we have enough space remaining to read 2100 * the size of the event in the headers. 2101 */ 2102 if (head + sizeof(event->header) > mmap_size) 2103 return NULL; 2104 2105 event = (union perf_event *)(buf + head); 2106 if (needs_swap) 2107 perf_event_header__bswap(&event->header); 2108 2109 if (head + event->header.size <= mmap_size) 2110 return event; 2111 2112 /* We're not fetching the event so swap back again */ 2113 if (needs_swap) 2114 perf_event_header__bswap(&event->header); 2115 2116 pr_debug("%s: head=%#" PRIx64 " event->header_size=%#x, mmap_size=%#zx:" 2117 " fuzzed or compressed perf.data?\n",__func__, head, event->header.size, mmap_size); 2118 2119 return error; 2120 } 2121 2122 static union perf_event * 2123 fetch_mmaped_event(u64 head, size_t mmap_size, char *buf, bool needs_swap) 2124 { 2125 return prefetch_event(buf, head, mmap_size, needs_swap, ERR_PTR(-EINVAL)); 2126 } 2127 2128 static union perf_event * 2129 fetch_decomp_event(u64 head, size_t mmap_size, char *buf, bool needs_swap) 2130 { 2131 return prefetch_event(buf, head, mmap_size, needs_swap, NULL); 2132 } 2133 2134 static int __perf_session__process_decomp_events(struct perf_session *session) 2135 { 2136 s64 skip; 2137 u64 size; 2138 struct decomp *decomp = session->active_decomp->decomp_last; 2139 2140 if (!decomp) 2141 return 0; 2142 2143 while (decomp->head < decomp->size && !session_done()) { 2144 union perf_event *event = fetch_decomp_event(decomp->head, decomp->size, decomp->data, 2145 session->header.needs_swap); 2146 2147 if (!event) 2148 break; 2149 2150 size = event->header.size; 2151 2152 if (size < sizeof(struct perf_event_header) || 2153 (skip = perf_session__process_event(session, event, decomp->file_pos, 2154 decomp->file_path)) < 0) { 2155 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 2156 decomp->file_pos + decomp->head, event->header.size, event->header.type); 2157 return -EINVAL; 2158 } 2159 2160 if (skip) 2161 size += skip; 2162 2163 decomp->head += size; 2164 } 2165 2166 return 0; 2167 } 2168 2169 /* 2170 * On 64bit we can mmap the data file in one go. No need for tiny mmap 2171 * slices. On 32bit we use 32MB. 2172 */ 2173 #if BITS_PER_LONG == 64 2174 #define MMAP_SIZE ULLONG_MAX 2175 #define NUM_MMAPS 1 2176 #else 2177 #define MMAP_SIZE (32 * 1024 * 1024ULL) 2178 #define NUM_MMAPS 128 2179 #endif 2180 2181 struct reader; 2182 2183 typedef s64 (*reader_cb_t)(struct perf_session *session, 2184 union perf_event *event, 2185 u64 file_offset, 2186 const char *file_path); 2187 2188 struct reader { 2189 int fd; 2190 const char *path; 2191 u64 data_size; 2192 u64 data_offset; 2193 reader_cb_t process; 2194 bool in_place_update; 2195 char *mmaps[NUM_MMAPS]; 2196 size_t mmap_size; 2197 int mmap_idx; 2198 char *mmap_cur; 2199 u64 file_pos; 2200 u64 file_offset; 2201 u64 head; 2202 u64 size; 2203 bool done; 2204 struct zstd_data zstd_data; 2205 struct decomp_data decomp_data; 2206 }; 2207 2208 static int 2209 reader__init(struct reader *rd, bool *one_mmap) 2210 { 2211 u64 data_size = rd->data_size; 2212 char **mmaps = rd->mmaps; 2213 2214 rd->head = rd->data_offset; 2215 data_size += rd->data_offset; 2216 2217 rd->mmap_size = MMAP_SIZE; 2218 if (rd->mmap_size > data_size) { 2219 rd->mmap_size = data_size; 2220 if (one_mmap) 2221 *one_mmap = true; 2222 } 2223 2224 memset(mmaps, 0, sizeof(rd->mmaps)); 2225 2226 if (zstd_init(&rd->zstd_data, 0)) 2227 return -1; 2228 rd->decomp_data.zstd_decomp = &rd->zstd_data; 2229 2230 return 0; 2231 } 2232 2233 static void 2234 reader__release_decomp(struct reader *rd) 2235 { 2236 perf_decomp__release_events(rd->decomp_data.decomp); 2237 zstd_fini(&rd->zstd_data); 2238 } 2239 2240 static int 2241 reader__mmap(struct reader *rd, struct perf_session *session) 2242 { 2243 int mmap_prot, mmap_flags; 2244 char *buf, **mmaps = rd->mmaps; 2245 u64 page_offset; 2246 2247 mmap_prot = PROT_READ; 2248 mmap_flags = MAP_SHARED; 2249 2250 if (rd->in_place_update) { 2251 mmap_prot |= PROT_WRITE; 2252 } else if (session->header.needs_swap) { 2253 mmap_prot |= PROT_WRITE; 2254 mmap_flags = MAP_PRIVATE; 2255 } 2256 2257 if (mmaps[rd->mmap_idx]) { 2258 munmap(mmaps[rd->mmap_idx], rd->mmap_size); 2259 mmaps[rd->mmap_idx] = NULL; 2260 } 2261 2262 page_offset = page_size * (rd->head / page_size); 2263 rd->file_offset += page_offset; 2264 rd->head -= page_offset; 2265 2266 buf = mmap(NULL, rd->mmap_size, mmap_prot, mmap_flags, rd->fd, 2267 rd->file_offset); 2268 if (buf == MAP_FAILED) { 2269 pr_err("failed to mmap file\n"); 2270 return -errno; 2271 } 2272 mmaps[rd->mmap_idx] = rd->mmap_cur = buf; 2273 rd->mmap_idx = (rd->mmap_idx + 1) & (ARRAY_SIZE(rd->mmaps) - 1); 2274 rd->file_pos = rd->file_offset + rd->head; 2275 if (session->one_mmap) { 2276 session->one_mmap_addr = buf; 2277 session->one_mmap_offset = rd->file_offset; 2278 } 2279 2280 return 0; 2281 } 2282 2283 enum { 2284 READER_OK, 2285 READER_NODATA, 2286 }; 2287 2288 static int 2289 reader__read_event(struct reader *rd, struct perf_session *session, 2290 struct ui_progress *prog) 2291 { 2292 u64 size; 2293 int err = READER_OK; 2294 union perf_event *event; 2295 s64 skip; 2296 2297 event = fetch_mmaped_event(rd->head, rd->mmap_size, rd->mmap_cur, 2298 session->header.needs_swap); 2299 if (IS_ERR(event)) 2300 return PTR_ERR(event); 2301 2302 if (!event) 2303 return READER_NODATA; 2304 2305 size = event->header.size; 2306 2307 skip = -EINVAL; 2308 2309 if (size < sizeof(struct perf_event_header) || 2310 (skip = rd->process(session, event, rd->file_pos, rd->path)) < 0) { 2311 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d [%s]\n", 2312 rd->file_offset + rd->head, event->header.size, 2313 event->header.type, strerror(-skip)); 2314 err = skip; 2315 goto out; 2316 } 2317 2318 if (skip) 2319 size += skip; 2320 2321 rd->size += size; 2322 rd->head += size; 2323 rd->file_pos += size; 2324 2325 err = __perf_session__process_decomp_events(session); 2326 if (err) 2327 goto out; 2328 2329 ui_progress__update(prog, size); 2330 2331 out: 2332 return err; 2333 } 2334 2335 static inline bool 2336 reader__eof(struct reader *rd) 2337 { 2338 return (rd->file_pos >= rd->data_size + rd->data_offset); 2339 } 2340 2341 static int 2342 reader__process_events(struct reader *rd, struct perf_session *session, 2343 struct ui_progress *prog) 2344 { 2345 int err; 2346 2347 err = reader__init(rd, &session->one_mmap); 2348 if (err) 2349 goto out; 2350 2351 session->active_decomp = &rd->decomp_data; 2352 2353 remap: 2354 err = reader__mmap(rd, session); 2355 if (err) 2356 goto out; 2357 2358 more: 2359 err = reader__read_event(rd, session, prog); 2360 if (err < 0) 2361 goto out; 2362 else if (err == READER_NODATA) 2363 goto remap; 2364 2365 if (session_done()) 2366 goto out; 2367 2368 if (!reader__eof(rd)) 2369 goto more; 2370 2371 out: 2372 session->active_decomp = &session->decomp_data; 2373 return err; 2374 } 2375 2376 static s64 process_simple(struct perf_session *session, 2377 union perf_event *event, 2378 u64 file_offset, 2379 const char *file_path) 2380 { 2381 return perf_session__process_event(session, event, file_offset, file_path); 2382 } 2383 2384 static int __perf_session__process_events(struct perf_session *session) 2385 { 2386 struct reader rd = { 2387 .fd = perf_data__fd(session->data), 2388 .path = session->data->file.path, 2389 .data_size = session->header.data_size, 2390 .data_offset = session->header.data_offset, 2391 .process = process_simple, 2392 .in_place_update = session->data->in_place_update, 2393 }; 2394 struct ordered_events *oe = &session->ordered_events; 2395 struct perf_tool *tool = session->tool; 2396 struct ui_progress prog; 2397 int err; 2398 2399 perf_tool__fill_defaults(tool); 2400 2401 if (rd.data_size == 0) 2402 return -1; 2403 2404 ui_progress__init_size(&prog, rd.data_size, "Processing events..."); 2405 2406 err = reader__process_events(&rd, session, &prog); 2407 if (err) 2408 goto out_err; 2409 /* do the final flush for ordered samples */ 2410 err = ordered_events__flush(oe, OE_FLUSH__FINAL); 2411 if (err) 2412 goto out_err; 2413 err = auxtrace__flush_events(session, tool); 2414 if (err) 2415 goto out_err; 2416 err = perf_session__flush_thread_stacks(session); 2417 out_err: 2418 ui_progress__finish(); 2419 if (!tool->no_warn) 2420 perf_session__warn_about_errors(session); 2421 /* 2422 * We may switching perf.data output, make ordered_events 2423 * reusable. 2424 */ 2425 ordered_events__reinit(&session->ordered_events); 2426 auxtrace__free_events(session); 2427 reader__release_decomp(&rd); 2428 session->one_mmap = false; 2429 return err; 2430 } 2431 2432 /* 2433 * Processing 2 MB of data from each reader in sequence, 2434 * because that's the way the ordered events sorting works 2435 * most efficiently. 2436 */ 2437 #define READER_MAX_SIZE (2 * 1024 * 1024) 2438 2439 /* 2440 * This function reads, merge and process directory data. 2441 * It assumens the version 1 of directory data, where each 2442 * data file holds per-cpu data, already sorted by kernel. 2443 */ 2444 static int __perf_session__process_dir_events(struct perf_session *session) 2445 { 2446 struct perf_data *data = session->data; 2447 struct perf_tool *tool = session->tool; 2448 int i, ret, readers, nr_readers; 2449 struct ui_progress prog; 2450 u64 total_size = perf_data__size(session->data); 2451 struct reader *rd; 2452 2453 perf_tool__fill_defaults(tool); 2454 2455 ui_progress__init_size(&prog, total_size, "Sorting events..."); 2456 2457 nr_readers = 1; 2458 for (i = 0; i < data->dir.nr; i++) { 2459 if (data->dir.files[i].size) 2460 nr_readers++; 2461 } 2462 2463 rd = zalloc(nr_readers * sizeof(struct reader)); 2464 if (!rd) 2465 return -ENOMEM; 2466 2467 rd[0] = (struct reader) { 2468 .fd = perf_data__fd(session->data), 2469 .path = session->data->file.path, 2470 .data_size = session->header.data_size, 2471 .data_offset = session->header.data_offset, 2472 .process = process_simple, 2473 .in_place_update = session->data->in_place_update, 2474 }; 2475 ret = reader__init(&rd[0], NULL); 2476 if (ret) 2477 goto out_err; 2478 ret = reader__mmap(&rd[0], session); 2479 if (ret) 2480 goto out_err; 2481 readers = 1; 2482 2483 for (i = 0; i < data->dir.nr; i++) { 2484 if (!data->dir.files[i].size) 2485 continue; 2486 rd[readers] = (struct reader) { 2487 .fd = data->dir.files[i].fd, 2488 .path = data->dir.files[i].path, 2489 .data_size = data->dir.files[i].size, 2490 .data_offset = 0, 2491 .process = process_simple, 2492 .in_place_update = session->data->in_place_update, 2493 }; 2494 ret = reader__init(&rd[readers], NULL); 2495 if (ret) 2496 goto out_err; 2497 ret = reader__mmap(&rd[readers], session); 2498 if (ret) 2499 goto out_err; 2500 readers++; 2501 } 2502 2503 i = 0; 2504 while (readers) { 2505 if (session_done()) 2506 break; 2507 2508 if (rd[i].done) { 2509 i = (i + 1) % nr_readers; 2510 continue; 2511 } 2512 if (reader__eof(&rd[i])) { 2513 rd[i].done = true; 2514 readers--; 2515 continue; 2516 } 2517 2518 session->active_decomp = &rd[i].decomp_data; 2519 ret = reader__read_event(&rd[i], session, &prog); 2520 if (ret < 0) { 2521 goto out_err; 2522 } else if (ret == READER_NODATA) { 2523 ret = reader__mmap(&rd[i], session); 2524 if (ret) 2525 goto out_err; 2526 } 2527 2528 if (rd[i].size >= READER_MAX_SIZE) { 2529 rd[i].size = 0; 2530 i = (i + 1) % nr_readers; 2531 } 2532 } 2533 2534 ret = ordered_events__flush(&session->ordered_events, OE_FLUSH__FINAL); 2535 if (ret) 2536 goto out_err; 2537 2538 ret = perf_session__flush_thread_stacks(session); 2539 out_err: 2540 ui_progress__finish(); 2541 2542 if (!tool->no_warn) 2543 perf_session__warn_about_errors(session); 2544 2545 /* 2546 * We may switching perf.data output, make ordered_events 2547 * reusable. 2548 */ 2549 ordered_events__reinit(&session->ordered_events); 2550 2551 session->one_mmap = false; 2552 2553 session->active_decomp = &session->decomp_data; 2554 for (i = 0; i < nr_readers; i++) 2555 reader__release_decomp(&rd[i]); 2556 zfree(&rd); 2557 2558 return ret; 2559 } 2560 2561 int perf_session__process_events(struct perf_session *session) 2562 { 2563 if (perf_session__register_idle_thread(session) < 0) 2564 return -ENOMEM; 2565 2566 if (perf_data__is_pipe(session->data)) 2567 return __perf_session__process_pipe_events(session); 2568 2569 if (perf_data__is_dir(session->data)) 2570 return __perf_session__process_dir_events(session); 2571 2572 return __perf_session__process_events(session); 2573 } 2574 2575 bool perf_session__has_traces(struct perf_session *session, const char *msg) 2576 { 2577 struct evsel *evsel; 2578 2579 evlist__for_each_entry(session->evlist, evsel) { 2580 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) 2581 return true; 2582 } 2583 2584 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); 2585 return false; 2586 } 2587 2588 int map__set_kallsyms_ref_reloc_sym(struct map *map, const char *symbol_name, u64 addr) 2589 { 2590 char *bracket; 2591 struct ref_reloc_sym *ref; 2592 struct kmap *kmap; 2593 2594 ref = zalloc(sizeof(struct ref_reloc_sym)); 2595 if (ref == NULL) 2596 return -ENOMEM; 2597 2598 ref->name = strdup(symbol_name); 2599 if (ref->name == NULL) { 2600 free(ref); 2601 return -ENOMEM; 2602 } 2603 2604 bracket = strchr(ref->name, ']'); 2605 if (bracket) 2606 *bracket = '\0'; 2607 2608 ref->addr = addr; 2609 2610 kmap = map__kmap(map); 2611 if (kmap) 2612 kmap->ref_reloc_sym = ref; 2613 2614 return 0; 2615 } 2616 2617 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp) 2618 { 2619 return machines__fprintf_dsos(&session->machines, fp); 2620 } 2621 2622 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp, 2623 bool (skip)(struct dso *dso, int parm), int parm) 2624 { 2625 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm); 2626 } 2627 2628 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp, 2629 bool skip_empty) 2630 { 2631 size_t ret; 2632 const char *msg = ""; 2633 2634 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE)) 2635 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)"; 2636 2637 ret = fprintf(fp, "\nAggregated stats:%s\n", msg); 2638 2639 ret += events_stats__fprintf(&session->evlist->stats, fp, skip_empty); 2640 return ret; 2641 } 2642 2643 size_t perf_session__fprintf(struct perf_session *session, FILE *fp) 2644 { 2645 /* 2646 * FIXME: Here we have to actually print all the machines in this 2647 * session, not just the host... 2648 */ 2649 return machine__fprintf(&session->machines.host, fp); 2650 } 2651 2652 struct evsel *perf_session__find_first_evtype(struct perf_session *session, 2653 unsigned int type) 2654 { 2655 struct evsel *pos; 2656 2657 evlist__for_each_entry(session->evlist, pos) { 2658 if (pos->core.attr.type == type) 2659 return pos; 2660 } 2661 return NULL; 2662 } 2663 2664 int perf_session__cpu_bitmap(struct perf_session *session, 2665 const char *cpu_list, unsigned long *cpu_bitmap) 2666 { 2667 int i, err = -1; 2668 struct perf_cpu_map *map; 2669 int nr_cpus = min(session->header.env.nr_cpus_avail, MAX_NR_CPUS); 2670 2671 for (i = 0; i < PERF_TYPE_MAX; ++i) { 2672 struct evsel *evsel; 2673 2674 evsel = perf_session__find_first_evtype(session, i); 2675 if (!evsel) 2676 continue; 2677 2678 if (!(evsel->core.attr.sample_type & PERF_SAMPLE_CPU)) { 2679 pr_err("File does not contain CPU events. " 2680 "Remove -C option to proceed.\n"); 2681 return -1; 2682 } 2683 } 2684 2685 map = perf_cpu_map__new(cpu_list); 2686 if (map == NULL) { 2687 pr_err("Invalid cpu_list\n"); 2688 return -1; 2689 } 2690 2691 for (i = 0; i < perf_cpu_map__nr(map); i++) { 2692 struct perf_cpu cpu = perf_cpu_map__cpu(map, i); 2693 2694 if (cpu.cpu >= nr_cpus) { 2695 pr_err("Requested CPU %d too large. " 2696 "Consider raising MAX_NR_CPUS\n", cpu.cpu); 2697 goto out_delete_map; 2698 } 2699 2700 set_bit(cpu.cpu, cpu_bitmap); 2701 } 2702 2703 err = 0; 2704 2705 out_delete_map: 2706 perf_cpu_map__put(map); 2707 return err; 2708 } 2709 2710 void perf_session__fprintf_info(struct perf_session *session, FILE *fp, 2711 bool full) 2712 { 2713 if (session == NULL || fp == NULL) 2714 return; 2715 2716 fprintf(fp, "# ========\n"); 2717 perf_header__fprintf_info(session, fp, full); 2718 fprintf(fp, "# ========\n#\n"); 2719 } 2720 2721 int perf_event__process_id_index(struct perf_session *session, 2722 union perf_event *event) 2723 { 2724 struct evlist *evlist = session->evlist; 2725 struct perf_record_id_index *ie = &event->id_index; 2726 size_t i, nr, max_nr; 2727 2728 max_nr = (ie->header.size - sizeof(struct perf_record_id_index)) / 2729 sizeof(struct id_index_entry); 2730 nr = ie->nr; 2731 if (nr > max_nr) 2732 return -EINVAL; 2733 2734 if (dump_trace) 2735 fprintf(stdout, " nr: %zu\n", nr); 2736 2737 for (i = 0; i < nr; i++) { 2738 struct id_index_entry *e = &ie->entries[i]; 2739 struct perf_sample_id *sid; 2740 2741 if (dump_trace) { 2742 fprintf(stdout, " ... id: %"PRI_lu64, e->id); 2743 fprintf(stdout, " idx: %"PRI_lu64, e->idx); 2744 fprintf(stdout, " cpu: %"PRI_ld64, e->cpu); 2745 fprintf(stdout, " tid: %"PRI_ld64"\n", e->tid); 2746 } 2747 2748 sid = evlist__id2sid(evlist, e->id); 2749 if (!sid) 2750 return -ENOENT; 2751 sid->idx = e->idx; 2752 sid->cpu.cpu = e->cpu; 2753 sid->tid = e->tid; 2754 } 2755 return 0; 2756 } 2757