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 if (!callstack) { 1155 printf("%s: nr:%" PRIu64 "\n", "... branch stack", sample->branch_stack->nr); 1156 } else { 1157 /* the reason of adding 1 to nr is because after expanding 1158 * branch stack it generates nr + 1 callstack records. e.g., 1159 * B()->C() 1160 * A()->B() 1161 * the final callstack should be: 1162 * C() 1163 * B() 1164 * A() 1165 */ 1166 printf("%s: nr:%" PRIu64 "\n", "... branch callstack", sample->branch_stack->nr+1); 1167 } 1168 1169 for (i = 0; i < sample->branch_stack->nr; i++) { 1170 struct branch_entry *e = &entries[i]; 1171 1172 if (!callstack) { 1173 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x %s\n", 1174 i, e->from, e->to, 1175 (unsigned short)e->flags.cycles, 1176 e->flags.mispred ? "M" : " ", 1177 e->flags.predicted ? "P" : " ", 1178 e->flags.abort ? "A" : " ", 1179 e->flags.in_tx ? "T" : " ", 1180 (unsigned)e->flags.reserved, 1181 e->flags.type ? branch_type_name(e->flags.type) : ""); 1182 } else { 1183 if (i == 0) { 1184 printf("..... %2"PRIu64": %016" PRIx64 "\n" 1185 "..... %2"PRIu64": %016" PRIx64 "\n", 1186 i, e->to, i+1, e->from); 1187 } else { 1188 printf("..... %2"PRIu64": %016" PRIx64 "\n", i+1, e->from); 1189 } 1190 } 1191 } 1192 } 1193 1194 static void regs_dump__printf(u64 mask, u64 *regs, const char *arch) 1195 { 1196 unsigned rid, i = 0; 1197 1198 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) { 1199 u64 val = regs[i++]; 1200 1201 printf(".... %-5s 0x%016" PRIx64 "\n", 1202 perf_reg_name(rid, arch), val); 1203 } 1204 } 1205 1206 static const char *regs_abi[] = { 1207 [PERF_SAMPLE_REGS_ABI_NONE] = "none", 1208 [PERF_SAMPLE_REGS_ABI_32] = "32-bit", 1209 [PERF_SAMPLE_REGS_ABI_64] = "64-bit", 1210 }; 1211 1212 static inline const char *regs_dump_abi(struct regs_dump *d) 1213 { 1214 if (d->abi > PERF_SAMPLE_REGS_ABI_64) 1215 return "unknown"; 1216 1217 return regs_abi[d->abi]; 1218 } 1219 1220 static void regs__printf(const char *type, struct regs_dump *regs, const char *arch) 1221 { 1222 u64 mask = regs->mask; 1223 1224 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n", 1225 type, 1226 mask, 1227 regs_dump_abi(regs)); 1228 1229 regs_dump__printf(mask, regs->regs, arch); 1230 } 1231 1232 static void regs_user__printf(struct perf_sample *sample, const char *arch) 1233 { 1234 struct regs_dump *user_regs = &sample->user_regs; 1235 1236 if (user_regs->regs) 1237 regs__printf("user", user_regs, arch); 1238 } 1239 1240 static void regs_intr__printf(struct perf_sample *sample, const char *arch) 1241 { 1242 struct regs_dump *intr_regs = &sample->intr_regs; 1243 1244 if (intr_regs->regs) 1245 regs__printf("intr", intr_regs, arch); 1246 } 1247 1248 static void stack_user__printf(struct stack_dump *dump) 1249 { 1250 printf("... ustack: size %" PRIu64 ", offset 0x%x\n", 1251 dump->size, dump->offset); 1252 } 1253 1254 static void evlist__print_tstamp(struct evlist *evlist, union perf_event *event, struct perf_sample *sample) 1255 { 1256 u64 sample_type = __evlist__combined_sample_type(evlist); 1257 1258 if (event->header.type != PERF_RECORD_SAMPLE && 1259 !evlist__sample_id_all(evlist)) { 1260 fputs("-1 -1 ", stdout); 1261 return; 1262 } 1263 1264 if ((sample_type & PERF_SAMPLE_CPU)) 1265 printf("%u ", sample->cpu); 1266 1267 if (sample_type & PERF_SAMPLE_TIME) 1268 printf("%" PRIu64 " ", sample->time); 1269 } 1270 1271 static void sample_read__printf(struct perf_sample *sample, u64 read_format) 1272 { 1273 printf("... sample_read:\n"); 1274 1275 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 1276 printf("...... time enabled %016" PRIx64 "\n", 1277 sample->read.time_enabled); 1278 1279 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 1280 printf("...... time running %016" PRIx64 "\n", 1281 sample->read.time_running); 1282 1283 if (read_format & PERF_FORMAT_GROUP) { 1284 u64 i; 1285 1286 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr); 1287 1288 for (i = 0; i < sample->read.group.nr; i++) { 1289 struct sample_read_value *value; 1290 1291 value = &sample->read.group.values[i]; 1292 printf("..... id %016" PRIx64 1293 ", value %016" PRIx64 "\n", 1294 value->id, value->value); 1295 } 1296 } else 1297 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n", 1298 sample->read.one.id, sample->read.one.value); 1299 } 1300 1301 static void dump_event(struct evlist *evlist, union perf_event *event, 1302 u64 file_offset, struct perf_sample *sample, 1303 const char *file_path) 1304 { 1305 if (!dump_trace) 1306 return; 1307 1308 printf("\n%#" PRIx64 "@%s [%#x]: event: %d\n", 1309 file_offset, file_path, event->header.size, event->header.type); 1310 1311 trace_event(event); 1312 if (event->header.type == PERF_RECORD_SAMPLE && evlist->trace_event_sample_raw) 1313 evlist->trace_event_sample_raw(evlist, event, sample); 1314 1315 if (sample) 1316 evlist__print_tstamp(evlist, event, sample); 1317 1318 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, 1319 event->header.size, perf_event__name(event->header.type)); 1320 } 1321 1322 char *get_page_size_name(u64 size, char *str) 1323 { 1324 if (!size || !unit_number__scnprintf(str, PAGE_SIZE_NAME_LEN, size)) 1325 snprintf(str, PAGE_SIZE_NAME_LEN, "%s", "N/A"); 1326 1327 return str; 1328 } 1329 1330 static void dump_sample(struct evsel *evsel, union perf_event *event, 1331 struct perf_sample *sample, const char *arch) 1332 { 1333 u64 sample_type; 1334 char str[PAGE_SIZE_NAME_LEN]; 1335 1336 if (!dump_trace) 1337 return; 1338 1339 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", 1340 event->header.misc, sample->pid, sample->tid, sample->ip, 1341 sample->period, sample->addr); 1342 1343 sample_type = evsel->core.attr.sample_type; 1344 1345 if (evsel__has_callchain(evsel)) 1346 callchain__printf(evsel, sample); 1347 1348 if (evsel__has_br_stack(evsel)) 1349 branch_stack__printf(sample, evsel__has_branch_callstack(evsel)); 1350 1351 if (sample_type & PERF_SAMPLE_REGS_USER) 1352 regs_user__printf(sample, arch); 1353 1354 if (sample_type & PERF_SAMPLE_REGS_INTR) 1355 regs_intr__printf(sample, arch); 1356 1357 if (sample_type & PERF_SAMPLE_STACK_USER) 1358 stack_user__printf(&sample->user_stack); 1359 1360 if (sample_type & PERF_SAMPLE_WEIGHT_TYPE) { 1361 printf("... weight: %" PRIu64 "", sample->weight); 1362 if (sample_type & PERF_SAMPLE_WEIGHT_STRUCT) { 1363 printf(",0x%"PRIx16"", sample->ins_lat); 1364 printf(",0x%"PRIx16"", sample->p_stage_cyc); 1365 } 1366 printf("\n"); 1367 } 1368 1369 if (sample_type & PERF_SAMPLE_DATA_SRC) 1370 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src); 1371 1372 if (sample_type & PERF_SAMPLE_PHYS_ADDR) 1373 printf(" .. phys_addr: 0x%"PRIx64"\n", sample->phys_addr); 1374 1375 if (sample_type & PERF_SAMPLE_DATA_PAGE_SIZE) 1376 printf(" .. data page size: %s\n", get_page_size_name(sample->data_page_size, str)); 1377 1378 if (sample_type & PERF_SAMPLE_CODE_PAGE_SIZE) 1379 printf(" .. code page size: %s\n", get_page_size_name(sample->code_page_size, str)); 1380 1381 if (sample_type & PERF_SAMPLE_TRANSACTION) 1382 printf("... transaction: %" PRIx64 "\n", sample->transaction); 1383 1384 if (sample_type & PERF_SAMPLE_READ) 1385 sample_read__printf(sample, evsel->core.attr.read_format); 1386 } 1387 1388 static void dump_read(struct evsel *evsel, union perf_event *event) 1389 { 1390 struct perf_record_read *read_event = &event->read; 1391 u64 read_format; 1392 1393 if (!dump_trace) 1394 return; 1395 1396 printf(": %d %d %s %" PRI_lu64 "\n", event->read.pid, event->read.tid, 1397 evsel__name(evsel), event->read.value); 1398 1399 if (!evsel) 1400 return; 1401 1402 read_format = evsel->core.attr.read_format; 1403 1404 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 1405 printf("... time enabled : %" PRI_lu64 "\n", read_event->time_enabled); 1406 1407 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 1408 printf("... time running : %" PRI_lu64 "\n", read_event->time_running); 1409 1410 if (read_format & PERF_FORMAT_ID) 1411 printf("... id : %" PRI_lu64 "\n", read_event->id); 1412 } 1413 1414 static struct machine *machines__find_for_cpumode(struct machines *machines, 1415 union perf_event *event, 1416 struct perf_sample *sample) 1417 { 1418 if (perf_guest && 1419 ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || 1420 (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) { 1421 u32 pid; 1422 1423 if (event->header.type == PERF_RECORD_MMAP 1424 || event->header.type == PERF_RECORD_MMAP2) 1425 pid = event->mmap.pid; 1426 else 1427 pid = sample->pid; 1428 1429 /* 1430 * Guest code machine is created as needed and does not use 1431 * DEFAULT_GUEST_KERNEL_ID. 1432 */ 1433 if (symbol_conf.guest_code) 1434 return machines__findnew(machines, pid); 1435 1436 return machines__find_guest(machines, pid); 1437 } 1438 1439 return &machines->host; 1440 } 1441 1442 static int deliver_sample_value(struct evlist *evlist, 1443 struct perf_tool *tool, 1444 union perf_event *event, 1445 struct perf_sample *sample, 1446 struct sample_read_value *v, 1447 struct machine *machine) 1448 { 1449 struct perf_sample_id *sid = evlist__id2sid(evlist, v->id); 1450 struct evsel *evsel; 1451 1452 if (sid) { 1453 sample->id = v->id; 1454 sample->period = v->value - sid->period; 1455 sid->period = v->value; 1456 } 1457 1458 if (!sid || sid->evsel == NULL) { 1459 ++evlist->stats.nr_unknown_id; 1460 return 0; 1461 } 1462 1463 /* 1464 * There's no reason to deliver sample 1465 * for zero period, bail out. 1466 */ 1467 if (!sample->period) 1468 return 0; 1469 1470 evsel = container_of(sid->evsel, struct evsel, core); 1471 return tool->sample(tool, event, sample, evsel, machine); 1472 } 1473 1474 static int deliver_sample_group(struct evlist *evlist, 1475 struct perf_tool *tool, 1476 union perf_event *event, 1477 struct perf_sample *sample, 1478 struct machine *machine) 1479 { 1480 int ret = -EINVAL; 1481 u64 i; 1482 1483 for (i = 0; i < sample->read.group.nr; i++) { 1484 ret = deliver_sample_value(evlist, tool, event, sample, 1485 &sample->read.group.values[i], 1486 machine); 1487 if (ret) 1488 break; 1489 } 1490 1491 return ret; 1492 } 1493 1494 static int evlist__deliver_sample(struct evlist *evlist, struct perf_tool *tool, 1495 union perf_event *event, struct perf_sample *sample, 1496 struct evsel *evsel, struct machine *machine) 1497 { 1498 /* We know evsel != NULL. */ 1499 u64 sample_type = evsel->core.attr.sample_type; 1500 u64 read_format = evsel->core.attr.read_format; 1501 1502 /* Standard sample delivery. */ 1503 if (!(sample_type & PERF_SAMPLE_READ)) 1504 return tool->sample(tool, event, sample, evsel, machine); 1505 1506 /* For PERF_SAMPLE_READ we have either single or group mode. */ 1507 if (read_format & PERF_FORMAT_GROUP) 1508 return deliver_sample_group(evlist, tool, event, sample, 1509 machine); 1510 else 1511 return deliver_sample_value(evlist, tool, event, sample, 1512 &sample->read.one, machine); 1513 } 1514 1515 static int machines__deliver_event(struct machines *machines, 1516 struct evlist *evlist, 1517 union perf_event *event, 1518 struct perf_sample *sample, 1519 struct perf_tool *tool, u64 file_offset, 1520 const char *file_path) 1521 { 1522 struct evsel *evsel; 1523 struct machine *machine; 1524 1525 dump_event(evlist, event, file_offset, sample, file_path); 1526 1527 evsel = evlist__id2evsel(evlist, sample->id); 1528 1529 machine = machines__find_for_cpumode(machines, event, sample); 1530 1531 switch (event->header.type) { 1532 case PERF_RECORD_SAMPLE: 1533 if (evsel == NULL) { 1534 ++evlist->stats.nr_unknown_id; 1535 return 0; 1536 } 1537 if (machine == NULL) { 1538 ++evlist->stats.nr_unprocessable_samples; 1539 dump_sample(evsel, event, sample, perf_env__arch(NULL)); 1540 return 0; 1541 } 1542 dump_sample(evsel, event, sample, perf_env__arch(machine->env)); 1543 return evlist__deliver_sample(evlist, tool, event, sample, evsel, machine); 1544 case PERF_RECORD_MMAP: 1545 return tool->mmap(tool, event, sample, machine); 1546 case PERF_RECORD_MMAP2: 1547 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT) 1548 ++evlist->stats.nr_proc_map_timeout; 1549 return tool->mmap2(tool, event, sample, machine); 1550 case PERF_RECORD_COMM: 1551 return tool->comm(tool, event, sample, machine); 1552 case PERF_RECORD_NAMESPACES: 1553 return tool->namespaces(tool, event, sample, machine); 1554 case PERF_RECORD_CGROUP: 1555 return tool->cgroup(tool, event, sample, machine); 1556 case PERF_RECORD_FORK: 1557 return tool->fork(tool, event, sample, machine); 1558 case PERF_RECORD_EXIT: 1559 return tool->exit(tool, event, sample, machine); 1560 case PERF_RECORD_LOST: 1561 if (tool->lost == perf_event__process_lost) 1562 evlist->stats.total_lost += event->lost.lost; 1563 return tool->lost(tool, event, sample, machine); 1564 case PERF_RECORD_LOST_SAMPLES: 1565 if (tool->lost_samples == perf_event__process_lost_samples) 1566 evlist->stats.total_lost_samples += event->lost_samples.lost; 1567 return tool->lost_samples(tool, event, sample, machine); 1568 case PERF_RECORD_READ: 1569 dump_read(evsel, event); 1570 return tool->read(tool, event, sample, evsel, machine); 1571 case PERF_RECORD_THROTTLE: 1572 return tool->throttle(tool, event, sample, machine); 1573 case PERF_RECORD_UNTHROTTLE: 1574 return tool->unthrottle(tool, event, sample, machine); 1575 case PERF_RECORD_AUX: 1576 if (tool->aux == perf_event__process_aux) { 1577 if (event->aux.flags & PERF_AUX_FLAG_TRUNCATED) 1578 evlist->stats.total_aux_lost += 1; 1579 if (event->aux.flags & PERF_AUX_FLAG_PARTIAL) 1580 evlist->stats.total_aux_partial += 1; 1581 if (event->aux.flags & PERF_AUX_FLAG_COLLISION) 1582 evlist->stats.total_aux_collision += 1; 1583 } 1584 return tool->aux(tool, event, sample, machine); 1585 case PERF_RECORD_ITRACE_START: 1586 return tool->itrace_start(tool, event, sample, machine); 1587 case PERF_RECORD_SWITCH: 1588 case PERF_RECORD_SWITCH_CPU_WIDE: 1589 return tool->context_switch(tool, event, sample, machine); 1590 case PERF_RECORD_KSYMBOL: 1591 return tool->ksymbol(tool, event, sample, machine); 1592 case PERF_RECORD_BPF_EVENT: 1593 return tool->bpf(tool, event, sample, machine); 1594 case PERF_RECORD_TEXT_POKE: 1595 return tool->text_poke(tool, event, sample, machine); 1596 case PERF_RECORD_AUX_OUTPUT_HW_ID: 1597 return tool->aux_output_hw_id(tool, event, sample, machine); 1598 default: 1599 ++evlist->stats.nr_unknown_events; 1600 return -1; 1601 } 1602 } 1603 1604 static int perf_session__deliver_event(struct perf_session *session, 1605 union perf_event *event, 1606 struct perf_tool *tool, 1607 u64 file_offset, 1608 const char *file_path) 1609 { 1610 struct perf_sample sample; 1611 int ret = evlist__parse_sample(session->evlist, event, &sample); 1612 1613 if (ret) { 1614 pr_err("Can't parse sample, err = %d\n", ret); 1615 return ret; 1616 } 1617 1618 ret = auxtrace__process_event(session, event, &sample, tool); 1619 if (ret < 0) 1620 return ret; 1621 if (ret > 0) 1622 return 0; 1623 1624 ret = machines__deliver_event(&session->machines, session->evlist, 1625 event, &sample, tool, file_offset, file_path); 1626 1627 if (dump_trace && sample.aux_sample.size) 1628 auxtrace__dump_auxtrace_sample(session, &sample); 1629 1630 return ret; 1631 } 1632 1633 static s64 perf_session__process_user_event(struct perf_session *session, 1634 union perf_event *event, 1635 u64 file_offset, 1636 const char *file_path) 1637 { 1638 struct ordered_events *oe = &session->ordered_events; 1639 struct perf_tool *tool = session->tool; 1640 struct perf_sample sample = { .time = 0, }; 1641 int fd = perf_data__fd(session->data); 1642 int err; 1643 1644 if (event->header.type != PERF_RECORD_COMPRESSED || 1645 tool->compressed == perf_session__process_compressed_event_stub) 1646 dump_event(session->evlist, event, file_offset, &sample, file_path); 1647 1648 /* These events are processed right away */ 1649 switch (event->header.type) { 1650 case PERF_RECORD_HEADER_ATTR: 1651 err = tool->attr(tool, event, &session->evlist); 1652 if (err == 0) { 1653 perf_session__set_id_hdr_size(session); 1654 perf_session__set_comm_exec(session); 1655 } 1656 return err; 1657 case PERF_RECORD_EVENT_UPDATE: 1658 return tool->event_update(tool, event, &session->evlist); 1659 case PERF_RECORD_HEADER_EVENT_TYPE: 1660 /* 1661 * Deprecated, but we need to handle it for sake 1662 * of old data files create in pipe mode. 1663 */ 1664 return 0; 1665 case PERF_RECORD_HEADER_TRACING_DATA: 1666 /* 1667 * Setup for reading amidst mmap, but only when we 1668 * are in 'file' mode. The 'pipe' fd is in proper 1669 * place already. 1670 */ 1671 if (!perf_data__is_pipe(session->data)) 1672 lseek(fd, file_offset, SEEK_SET); 1673 return tool->tracing_data(session, event); 1674 case PERF_RECORD_HEADER_BUILD_ID: 1675 return tool->build_id(session, event); 1676 case PERF_RECORD_FINISHED_ROUND: 1677 return tool->finished_round(tool, event, oe); 1678 case PERF_RECORD_ID_INDEX: 1679 return tool->id_index(session, event); 1680 case PERF_RECORD_AUXTRACE_INFO: 1681 return tool->auxtrace_info(session, event); 1682 case PERF_RECORD_AUXTRACE: 1683 /* setup for reading amidst mmap */ 1684 lseek(fd, file_offset + event->header.size, SEEK_SET); 1685 return tool->auxtrace(session, event); 1686 case PERF_RECORD_AUXTRACE_ERROR: 1687 perf_session__auxtrace_error_inc(session, event); 1688 return tool->auxtrace_error(session, event); 1689 case PERF_RECORD_THREAD_MAP: 1690 return tool->thread_map(session, event); 1691 case PERF_RECORD_CPU_MAP: 1692 return tool->cpu_map(session, event); 1693 case PERF_RECORD_STAT_CONFIG: 1694 return tool->stat_config(session, event); 1695 case PERF_RECORD_STAT: 1696 return tool->stat(session, event); 1697 case PERF_RECORD_STAT_ROUND: 1698 return tool->stat_round(session, event); 1699 case PERF_RECORD_TIME_CONV: 1700 session->time_conv = event->time_conv; 1701 return tool->time_conv(session, event); 1702 case PERF_RECORD_HEADER_FEATURE: 1703 return tool->feature(session, event); 1704 case PERF_RECORD_COMPRESSED: 1705 err = tool->compressed(session, event, file_offset, file_path); 1706 if (err) 1707 dump_event(session->evlist, event, file_offset, &sample, file_path); 1708 return err; 1709 default: 1710 return -EINVAL; 1711 } 1712 } 1713 1714 int perf_session__deliver_synth_event(struct perf_session *session, 1715 union perf_event *event, 1716 struct perf_sample *sample) 1717 { 1718 struct evlist *evlist = session->evlist; 1719 struct perf_tool *tool = session->tool; 1720 1721 events_stats__inc(&evlist->stats, event->header.type); 1722 1723 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1724 return perf_session__process_user_event(session, event, 0, NULL); 1725 1726 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0, NULL); 1727 } 1728 1729 static void event_swap(union perf_event *event, bool sample_id_all) 1730 { 1731 perf_event__swap_op swap; 1732 1733 swap = perf_event__swap_ops[event->header.type]; 1734 if (swap) 1735 swap(event, sample_id_all); 1736 } 1737 1738 int perf_session__peek_event(struct perf_session *session, off_t file_offset, 1739 void *buf, size_t buf_sz, 1740 union perf_event **event_ptr, 1741 struct perf_sample *sample) 1742 { 1743 union perf_event *event; 1744 size_t hdr_sz, rest; 1745 int fd; 1746 1747 if (session->one_mmap && !session->header.needs_swap) { 1748 event = file_offset - session->one_mmap_offset + 1749 session->one_mmap_addr; 1750 goto out_parse_sample; 1751 } 1752 1753 if (perf_data__is_pipe(session->data)) 1754 return -1; 1755 1756 fd = perf_data__fd(session->data); 1757 hdr_sz = sizeof(struct perf_event_header); 1758 1759 if (buf_sz < hdr_sz) 1760 return -1; 1761 1762 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 || 1763 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz) 1764 return -1; 1765 1766 event = (union perf_event *)buf; 1767 1768 if (session->header.needs_swap) 1769 perf_event_header__bswap(&event->header); 1770 1771 if (event->header.size < hdr_sz || event->header.size > buf_sz) 1772 return -1; 1773 1774 buf += hdr_sz; 1775 rest = event->header.size - hdr_sz; 1776 1777 if (readn(fd, buf, rest) != (ssize_t)rest) 1778 return -1; 1779 1780 if (session->header.needs_swap) 1781 event_swap(event, evlist__sample_id_all(session->evlist)); 1782 1783 out_parse_sample: 1784 1785 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START && 1786 evlist__parse_sample(session->evlist, event, sample)) 1787 return -1; 1788 1789 *event_ptr = event; 1790 1791 return 0; 1792 } 1793 1794 int perf_session__peek_events(struct perf_session *session, u64 offset, 1795 u64 size, peek_events_cb_t cb, void *data) 1796 { 1797 u64 max_offset = offset + size; 1798 char buf[PERF_SAMPLE_MAX_SIZE]; 1799 union perf_event *event; 1800 int err; 1801 1802 do { 1803 err = perf_session__peek_event(session, offset, buf, 1804 PERF_SAMPLE_MAX_SIZE, &event, 1805 NULL); 1806 if (err) 1807 return err; 1808 1809 err = cb(session, event, offset, data); 1810 if (err) 1811 return err; 1812 1813 offset += event->header.size; 1814 if (event->header.type == PERF_RECORD_AUXTRACE) 1815 offset += event->auxtrace.size; 1816 1817 } while (offset < max_offset); 1818 1819 return err; 1820 } 1821 1822 static s64 perf_session__process_event(struct perf_session *session, 1823 union perf_event *event, u64 file_offset, 1824 const char *file_path) 1825 { 1826 struct evlist *evlist = session->evlist; 1827 struct perf_tool *tool = session->tool; 1828 int ret; 1829 1830 if (session->header.needs_swap) 1831 event_swap(event, evlist__sample_id_all(evlist)); 1832 1833 if (event->header.type >= PERF_RECORD_HEADER_MAX) 1834 return -EINVAL; 1835 1836 events_stats__inc(&evlist->stats, event->header.type); 1837 1838 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1839 return perf_session__process_user_event(session, event, file_offset, file_path); 1840 1841 if (tool->ordered_events) { 1842 u64 timestamp = -1ULL; 1843 1844 ret = evlist__parse_sample_timestamp(evlist, event, ×tamp); 1845 if (ret && ret != -1) 1846 return ret; 1847 1848 ret = perf_session__queue_event(session, event, timestamp, file_offset, file_path); 1849 if (ret != -ETIME) 1850 return ret; 1851 } 1852 1853 return perf_session__deliver_event(session, event, tool, file_offset, file_path); 1854 } 1855 1856 void perf_event_header__bswap(struct perf_event_header *hdr) 1857 { 1858 hdr->type = bswap_32(hdr->type); 1859 hdr->misc = bswap_16(hdr->misc); 1860 hdr->size = bswap_16(hdr->size); 1861 } 1862 1863 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) 1864 { 1865 return machine__findnew_thread(&session->machines.host, -1, pid); 1866 } 1867 1868 int perf_session__register_idle_thread(struct perf_session *session) 1869 { 1870 struct thread *thread = machine__idle_thread(&session->machines.host); 1871 1872 /* machine__idle_thread() got the thread, so put it */ 1873 thread__put(thread); 1874 return thread ? 0 : -1; 1875 } 1876 1877 static void 1878 perf_session__warn_order(const struct perf_session *session) 1879 { 1880 const struct ordered_events *oe = &session->ordered_events; 1881 struct evsel *evsel; 1882 bool should_warn = true; 1883 1884 evlist__for_each_entry(session->evlist, evsel) { 1885 if (evsel->core.attr.write_backward) 1886 should_warn = false; 1887 } 1888 1889 if (!should_warn) 1890 return; 1891 if (oe->nr_unordered_events != 0) 1892 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events); 1893 } 1894 1895 static void perf_session__warn_about_errors(const struct perf_session *session) 1896 { 1897 const struct events_stats *stats = &session->evlist->stats; 1898 1899 if (session->tool->lost == perf_event__process_lost && 1900 stats->nr_events[PERF_RECORD_LOST] != 0) { 1901 ui__warning("Processed %d events and lost %d chunks!\n\n" 1902 "Check IO/CPU overload!\n\n", 1903 stats->nr_events[0], 1904 stats->nr_events[PERF_RECORD_LOST]); 1905 } 1906 1907 if (session->tool->lost_samples == perf_event__process_lost_samples) { 1908 double drop_rate; 1909 1910 drop_rate = (double)stats->total_lost_samples / 1911 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples); 1912 if (drop_rate > 0.05) { 1913 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%%!\n\n", 1914 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples, 1915 drop_rate * 100.0); 1916 } 1917 } 1918 1919 if (session->tool->aux == perf_event__process_aux && 1920 stats->total_aux_lost != 0) { 1921 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n", 1922 stats->total_aux_lost, 1923 stats->nr_events[PERF_RECORD_AUX]); 1924 } 1925 1926 if (session->tool->aux == perf_event__process_aux && 1927 stats->total_aux_partial != 0) { 1928 bool vmm_exclusive = false; 1929 1930 (void)sysfs__read_bool("module/kvm_intel/parameters/vmm_exclusive", 1931 &vmm_exclusive); 1932 1933 ui__warning("AUX data had gaps in it %" PRIu64 " times out of %u!\n\n" 1934 "Are you running a KVM guest in the background?%s\n\n", 1935 stats->total_aux_partial, 1936 stats->nr_events[PERF_RECORD_AUX], 1937 vmm_exclusive ? 1938 "\nReloading kvm_intel module with vmm_exclusive=0\n" 1939 "will reduce the gaps to only guest's timeslices." : 1940 ""); 1941 } 1942 1943 if (session->tool->aux == perf_event__process_aux && 1944 stats->total_aux_collision != 0) { 1945 ui__warning("AUX data detected collision %" PRIu64 " times out of %u!\n\n", 1946 stats->total_aux_collision, 1947 stats->nr_events[PERF_RECORD_AUX]); 1948 } 1949 1950 if (stats->nr_unknown_events != 0) { 1951 ui__warning("Found %u unknown events!\n\n" 1952 "Is this an older tool processing a perf.data " 1953 "file generated by a more recent tool?\n\n" 1954 "If that is not the case, consider " 1955 "reporting to linux-kernel@vger.kernel.org.\n\n", 1956 stats->nr_unknown_events); 1957 } 1958 1959 if (stats->nr_unknown_id != 0) { 1960 ui__warning("%u samples with id not present in the header\n", 1961 stats->nr_unknown_id); 1962 } 1963 1964 if (stats->nr_invalid_chains != 0) { 1965 ui__warning("Found invalid callchains!\n\n" 1966 "%u out of %u events were discarded for this reason.\n\n" 1967 "Consider reporting to linux-kernel@vger.kernel.org.\n\n", 1968 stats->nr_invalid_chains, 1969 stats->nr_events[PERF_RECORD_SAMPLE]); 1970 } 1971 1972 if (stats->nr_unprocessable_samples != 0) { 1973 ui__warning("%u unprocessable samples recorded.\n" 1974 "Do you have a KVM guest running and not using 'perf kvm'?\n", 1975 stats->nr_unprocessable_samples); 1976 } 1977 1978 perf_session__warn_order(session); 1979 1980 events_stats__auxtrace_error_warn(stats); 1981 1982 if (stats->nr_proc_map_timeout != 0) { 1983 ui__warning("%d map information files for pre-existing threads were\n" 1984 "not processed, if there are samples for addresses they\n" 1985 "will not be resolved, you may find out which are these\n" 1986 "threads by running with -v and redirecting the output\n" 1987 "to a file.\n" 1988 "The time limit to process proc map is too short?\n" 1989 "Increase it by --proc-map-timeout\n", 1990 stats->nr_proc_map_timeout); 1991 } 1992 } 1993 1994 static int perf_session__flush_thread_stack(struct thread *thread, 1995 void *p __maybe_unused) 1996 { 1997 return thread_stack__flush(thread); 1998 } 1999 2000 static int perf_session__flush_thread_stacks(struct perf_session *session) 2001 { 2002 return machines__for_each_thread(&session->machines, 2003 perf_session__flush_thread_stack, 2004 NULL); 2005 } 2006 2007 volatile int session_done; 2008 2009 static int __perf_session__process_decomp_events(struct perf_session *session); 2010 2011 static int __perf_session__process_pipe_events(struct perf_session *session) 2012 { 2013 struct ordered_events *oe = &session->ordered_events; 2014 struct perf_tool *tool = session->tool; 2015 union perf_event *event; 2016 uint32_t size, cur_size = 0; 2017 void *buf = NULL; 2018 s64 skip = 0; 2019 u64 head; 2020 ssize_t err; 2021 void *p; 2022 2023 perf_tool__fill_defaults(tool); 2024 2025 head = 0; 2026 cur_size = sizeof(union perf_event); 2027 2028 buf = malloc(cur_size); 2029 if (!buf) 2030 return -errno; 2031 ordered_events__set_copy_on_queue(oe, true); 2032 more: 2033 event = buf; 2034 err = perf_data__read(session->data, event, 2035 sizeof(struct perf_event_header)); 2036 if (err <= 0) { 2037 if (err == 0) 2038 goto done; 2039 2040 pr_err("failed to read event header\n"); 2041 goto out_err; 2042 } 2043 2044 if (session->header.needs_swap) 2045 perf_event_header__bswap(&event->header); 2046 2047 size = event->header.size; 2048 if (size < sizeof(struct perf_event_header)) { 2049 pr_err("bad event header size\n"); 2050 goto out_err; 2051 } 2052 2053 if (size > cur_size) { 2054 void *new = realloc(buf, size); 2055 if (!new) { 2056 pr_err("failed to allocate memory to read event\n"); 2057 goto out_err; 2058 } 2059 buf = new; 2060 cur_size = size; 2061 event = buf; 2062 } 2063 p = event; 2064 p += sizeof(struct perf_event_header); 2065 2066 if (size - sizeof(struct perf_event_header)) { 2067 err = perf_data__read(session->data, p, 2068 size - sizeof(struct perf_event_header)); 2069 if (err <= 0) { 2070 if (err == 0) { 2071 pr_err("unexpected end of event stream\n"); 2072 goto done; 2073 } 2074 2075 pr_err("failed to read event data\n"); 2076 goto out_err; 2077 } 2078 } 2079 2080 if ((skip = perf_session__process_event(session, event, head, "pipe")) < 0) { 2081 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 2082 head, event->header.size, event->header.type); 2083 err = -EINVAL; 2084 goto out_err; 2085 } 2086 2087 head += size; 2088 2089 if (skip > 0) 2090 head += skip; 2091 2092 err = __perf_session__process_decomp_events(session); 2093 if (err) 2094 goto out_err; 2095 2096 if (!session_done()) 2097 goto more; 2098 done: 2099 /* do the final flush for ordered samples */ 2100 err = ordered_events__flush(oe, OE_FLUSH__FINAL); 2101 if (err) 2102 goto out_err; 2103 err = auxtrace__flush_events(session, tool); 2104 if (err) 2105 goto out_err; 2106 err = perf_session__flush_thread_stacks(session); 2107 out_err: 2108 free(buf); 2109 if (!tool->no_warn) 2110 perf_session__warn_about_errors(session); 2111 ordered_events__free(&session->ordered_events); 2112 auxtrace__free_events(session); 2113 return err; 2114 } 2115 2116 static union perf_event * 2117 prefetch_event(char *buf, u64 head, size_t mmap_size, 2118 bool needs_swap, union perf_event *error) 2119 { 2120 union perf_event *event; 2121 u16 event_size; 2122 2123 /* 2124 * Ensure we have enough space remaining to read 2125 * the size of the event in the headers. 2126 */ 2127 if (head + sizeof(event->header) > mmap_size) 2128 return NULL; 2129 2130 event = (union perf_event *)(buf + head); 2131 if (needs_swap) 2132 perf_event_header__bswap(&event->header); 2133 2134 event_size = event->header.size; 2135 if (head + event_size <= mmap_size) 2136 return event; 2137 2138 /* We're not fetching the event so swap back again */ 2139 if (needs_swap) 2140 perf_event_header__bswap(&event->header); 2141 2142 /* Check if the event fits into the next mmapped buf. */ 2143 if (event_size <= mmap_size - head % page_size) { 2144 /* Remap buf and fetch again. */ 2145 return NULL; 2146 } 2147 2148 /* Invalid input. Event size should never exceed mmap_size. */ 2149 pr_debug("%s: head=%#" PRIx64 " event->header.size=%#x, mmap_size=%#zx:" 2150 " fuzzed or compressed perf.data?\n", __func__, head, event_size, mmap_size); 2151 2152 return error; 2153 } 2154 2155 static union perf_event * 2156 fetch_mmaped_event(u64 head, size_t mmap_size, char *buf, bool needs_swap) 2157 { 2158 return prefetch_event(buf, head, mmap_size, needs_swap, ERR_PTR(-EINVAL)); 2159 } 2160 2161 static union perf_event * 2162 fetch_decomp_event(u64 head, size_t mmap_size, char *buf, bool needs_swap) 2163 { 2164 return prefetch_event(buf, head, mmap_size, needs_swap, NULL); 2165 } 2166 2167 static int __perf_session__process_decomp_events(struct perf_session *session) 2168 { 2169 s64 skip; 2170 u64 size; 2171 struct decomp *decomp = session->active_decomp->decomp_last; 2172 2173 if (!decomp) 2174 return 0; 2175 2176 while (decomp->head < decomp->size && !session_done()) { 2177 union perf_event *event = fetch_decomp_event(decomp->head, decomp->size, decomp->data, 2178 session->header.needs_swap); 2179 2180 if (!event) 2181 break; 2182 2183 size = event->header.size; 2184 2185 if (size < sizeof(struct perf_event_header) || 2186 (skip = perf_session__process_event(session, event, decomp->file_pos, 2187 decomp->file_path)) < 0) { 2188 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 2189 decomp->file_pos + decomp->head, event->header.size, event->header.type); 2190 return -EINVAL; 2191 } 2192 2193 if (skip) 2194 size += skip; 2195 2196 decomp->head += size; 2197 } 2198 2199 return 0; 2200 } 2201 2202 /* 2203 * On 64bit we can mmap the data file in one go. No need for tiny mmap 2204 * slices. On 32bit we use 32MB. 2205 */ 2206 #if BITS_PER_LONG == 64 2207 #define MMAP_SIZE ULLONG_MAX 2208 #define NUM_MMAPS 1 2209 #else 2210 #define MMAP_SIZE (32 * 1024 * 1024ULL) 2211 #define NUM_MMAPS 128 2212 #endif 2213 2214 struct reader; 2215 2216 typedef s64 (*reader_cb_t)(struct perf_session *session, 2217 union perf_event *event, 2218 u64 file_offset, 2219 const char *file_path); 2220 2221 struct reader { 2222 int fd; 2223 const char *path; 2224 u64 data_size; 2225 u64 data_offset; 2226 reader_cb_t process; 2227 bool in_place_update; 2228 char *mmaps[NUM_MMAPS]; 2229 size_t mmap_size; 2230 int mmap_idx; 2231 char *mmap_cur; 2232 u64 file_pos; 2233 u64 file_offset; 2234 u64 head; 2235 u64 size; 2236 bool done; 2237 struct zstd_data zstd_data; 2238 struct decomp_data decomp_data; 2239 }; 2240 2241 static int 2242 reader__init(struct reader *rd, bool *one_mmap) 2243 { 2244 u64 data_size = rd->data_size; 2245 char **mmaps = rd->mmaps; 2246 2247 rd->head = rd->data_offset; 2248 data_size += rd->data_offset; 2249 2250 rd->mmap_size = MMAP_SIZE; 2251 if (rd->mmap_size > data_size) { 2252 rd->mmap_size = data_size; 2253 if (one_mmap) 2254 *one_mmap = true; 2255 } 2256 2257 memset(mmaps, 0, sizeof(rd->mmaps)); 2258 2259 if (zstd_init(&rd->zstd_data, 0)) 2260 return -1; 2261 rd->decomp_data.zstd_decomp = &rd->zstd_data; 2262 2263 return 0; 2264 } 2265 2266 static void 2267 reader__release_decomp(struct reader *rd) 2268 { 2269 perf_decomp__release_events(rd->decomp_data.decomp); 2270 zstd_fini(&rd->zstd_data); 2271 } 2272 2273 static int 2274 reader__mmap(struct reader *rd, struct perf_session *session) 2275 { 2276 int mmap_prot, mmap_flags; 2277 char *buf, **mmaps = rd->mmaps; 2278 u64 page_offset; 2279 2280 mmap_prot = PROT_READ; 2281 mmap_flags = MAP_SHARED; 2282 2283 if (rd->in_place_update) { 2284 mmap_prot |= PROT_WRITE; 2285 } else if (session->header.needs_swap) { 2286 mmap_prot |= PROT_WRITE; 2287 mmap_flags = MAP_PRIVATE; 2288 } 2289 2290 if (mmaps[rd->mmap_idx]) { 2291 munmap(mmaps[rd->mmap_idx], rd->mmap_size); 2292 mmaps[rd->mmap_idx] = NULL; 2293 } 2294 2295 page_offset = page_size * (rd->head / page_size); 2296 rd->file_offset += page_offset; 2297 rd->head -= page_offset; 2298 2299 buf = mmap(NULL, rd->mmap_size, mmap_prot, mmap_flags, rd->fd, 2300 rd->file_offset); 2301 if (buf == MAP_FAILED) { 2302 pr_err("failed to mmap file\n"); 2303 return -errno; 2304 } 2305 mmaps[rd->mmap_idx] = rd->mmap_cur = buf; 2306 rd->mmap_idx = (rd->mmap_idx + 1) & (ARRAY_SIZE(rd->mmaps) - 1); 2307 rd->file_pos = rd->file_offset + rd->head; 2308 if (session->one_mmap) { 2309 session->one_mmap_addr = buf; 2310 session->one_mmap_offset = rd->file_offset; 2311 } 2312 2313 return 0; 2314 } 2315 2316 enum { 2317 READER_OK, 2318 READER_NODATA, 2319 }; 2320 2321 static int 2322 reader__read_event(struct reader *rd, struct perf_session *session, 2323 struct ui_progress *prog) 2324 { 2325 u64 size; 2326 int err = READER_OK; 2327 union perf_event *event; 2328 s64 skip; 2329 2330 event = fetch_mmaped_event(rd->head, rd->mmap_size, rd->mmap_cur, 2331 session->header.needs_swap); 2332 if (IS_ERR(event)) 2333 return PTR_ERR(event); 2334 2335 if (!event) 2336 return READER_NODATA; 2337 2338 size = event->header.size; 2339 2340 skip = -EINVAL; 2341 2342 if (size < sizeof(struct perf_event_header) || 2343 (skip = rd->process(session, event, rd->file_pos, rd->path)) < 0) { 2344 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d [%s]\n", 2345 rd->file_offset + rd->head, event->header.size, 2346 event->header.type, strerror(-skip)); 2347 err = skip; 2348 goto out; 2349 } 2350 2351 if (skip) 2352 size += skip; 2353 2354 rd->size += size; 2355 rd->head += size; 2356 rd->file_pos += size; 2357 2358 err = __perf_session__process_decomp_events(session); 2359 if (err) 2360 goto out; 2361 2362 ui_progress__update(prog, size); 2363 2364 out: 2365 return err; 2366 } 2367 2368 static inline bool 2369 reader__eof(struct reader *rd) 2370 { 2371 return (rd->file_pos >= rd->data_size + rd->data_offset); 2372 } 2373 2374 static int 2375 reader__process_events(struct reader *rd, struct perf_session *session, 2376 struct ui_progress *prog) 2377 { 2378 int err; 2379 2380 err = reader__init(rd, &session->one_mmap); 2381 if (err) 2382 goto out; 2383 2384 session->active_decomp = &rd->decomp_data; 2385 2386 remap: 2387 err = reader__mmap(rd, session); 2388 if (err) 2389 goto out; 2390 2391 more: 2392 err = reader__read_event(rd, session, prog); 2393 if (err < 0) 2394 goto out; 2395 else if (err == READER_NODATA) 2396 goto remap; 2397 2398 if (session_done()) 2399 goto out; 2400 2401 if (!reader__eof(rd)) 2402 goto more; 2403 2404 out: 2405 session->active_decomp = &session->decomp_data; 2406 return err; 2407 } 2408 2409 static s64 process_simple(struct perf_session *session, 2410 union perf_event *event, 2411 u64 file_offset, 2412 const char *file_path) 2413 { 2414 return perf_session__process_event(session, event, file_offset, file_path); 2415 } 2416 2417 static int __perf_session__process_events(struct perf_session *session) 2418 { 2419 struct reader rd = { 2420 .fd = perf_data__fd(session->data), 2421 .path = session->data->file.path, 2422 .data_size = session->header.data_size, 2423 .data_offset = session->header.data_offset, 2424 .process = process_simple, 2425 .in_place_update = session->data->in_place_update, 2426 }; 2427 struct ordered_events *oe = &session->ordered_events; 2428 struct perf_tool *tool = session->tool; 2429 struct ui_progress prog; 2430 int err; 2431 2432 perf_tool__fill_defaults(tool); 2433 2434 if (rd.data_size == 0) 2435 return -1; 2436 2437 ui_progress__init_size(&prog, rd.data_size, "Processing events..."); 2438 2439 err = reader__process_events(&rd, session, &prog); 2440 if (err) 2441 goto out_err; 2442 /* do the final flush for ordered samples */ 2443 err = ordered_events__flush(oe, OE_FLUSH__FINAL); 2444 if (err) 2445 goto out_err; 2446 err = auxtrace__flush_events(session, tool); 2447 if (err) 2448 goto out_err; 2449 err = perf_session__flush_thread_stacks(session); 2450 out_err: 2451 ui_progress__finish(); 2452 if (!tool->no_warn) 2453 perf_session__warn_about_errors(session); 2454 /* 2455 * We may switching perf.data output, make ordered_events 2456 * reusable. 2457 */ 2458 ordered_events__reinit(&session->ordered_events); 2459 auxtrace__free_events(session); 2460 reader__release_decomp(&rd); 2461 session->one_mmap = false; 2462 return err; 2463 } 2464 2465 /* 2466 * Processing 2 MB of data from each reader in sequence, 2467 * because that's the way the ordered events sorting works 2468 * most efficiently. 2469 */ 2470 #define READER_MAX_SIZE (2 * 1024 * 1024) 2471 2472 /* 2473 * This function reads, merge and process directory data. 2474 * It assumens the version 1 of directory data, where each 2475 * data file holds per-cpu data, already sorted by kernel. 2476 */ 2477 static int __perf_session__process_dir_events(struct perf_session *session) 2478 { 2479 struct perf_data *data = session->data; 2480 struct perf_tool *tool = session->tool; 2481 int i, ret, readers, nr_readers; 2482 struct ui_progress prog; 2483 u64 total_size = perf_data__size(session->data); 2484 struct reader *rd; 2485 2486 perf_tool__fill_defaults(tool); 2487 2488 ui_progress__init_size(&prog, total_size, "Sorting events..."); 2489 2490 nr_readers = 1; 2491 for (i = 0; i < data->dir.nr; i++) { 2492 if (data->dir.files[i].size) 2493 nr_readers++; 2494 } 2495 2496 rd = zalloc(nr_readers * sizeof(struct reader)); 2497 if (!rd) 2498 return -ENOMEM; 2499 2500 rd[0] = (struct reader) { 2501 .fd = perf_data__fd(session->data), 2502 .path = session->data->file.path, 2503 .data_size = session->header.data_size, 2504 .data_offset = session->header.data_offset, 2505 .process = process_simple, 2506 .in_place_update = session->data->in_place_update, 2507 }; 2508 ret = reader__init(&rd[0], NULL); 2509 if (ret) 2510 goto out_err; 2511 ret = reader__mmap(&rd[0], session); 2512 if (ret) 2513 goto out_err; 2514 readers = 1; 2515 2516 for (i = 0; i < data->dir.nr; i++) { 2517 if (!data->dir.files[i].size) 2518 continue; 2519 rd[readers] = (struct reader) { 2520 .fd = data->dir.files[i].fd, 2521 .path = data->dir.files[i].path, 2522 .data_size = data->dir.files[i].size, 2523 .data_offset = 0, 2524 .process = process_simple, 2525 .in_place_update = session->data->in_place_update, 2526 }; 2527 ret = reader__init(&rd[readers], NULL); 2528 if (ret) 2529 goto out_err; 2530 ret = reader__mmap(&rd[readers], session); 2531 if (ret) 2532 goto out_err; 2533 readers++; 2534 } 2535 2536 i = 0; 2537 while (readers) { 2538 if (session_done()) 2539 break; 2540 2541 if (rd[i].done) { 2542 i = (i + 1) % nr_readers; 2543 continue; 2544 } 2545 if (reader__eof(&rd[i])) { 2546 rd[i].done = true; 2547 readers--; 2548 continue; 2549 } 2550 2551 session->active_decomp = &rd[i].decomp_data; 2552 ret = reader__read_event(&rd[i], session, &prog); 2553 if (ret < 0) { 2554 goto out_err; 2555 } else if (ret == READER_NODATA) { 2556 ret = reader__mmap(&rd[i], session); 2557 if (ret) 2558 goto out_err; 2559 } 2560 2561 if (rd[i].size >= READER_MAX_SIZE) { 2562 rd[i].size = 0; 2563 i = (i + 1) % nr_readers; 2564 } 2565 } 2566 2567 ret = ordered_events__flush(&session->ordered_events, OE_FLUSH__FINAL); 2568 if (ret) 2569 goto out_err; 2570 2571 ret = perf_session__flush_thread_stacks(session); 2572 out_err: 2573 ui_progress__finish(); 2574 2575 if (!tool->no_warn) 2576 perf_session__warn_about_errors(session); 2577 2578 /* 2579 * We may switching perf.data output, make ordered_events 2580 * reusable. 2581 */ 2582 ordered_events__reinit(&session->ordered_events); 2583 2584 session->one_mmap = false; 2585 2586 session->active_decomp = &session->decomp_data; 2587 for (i = 0; i < nr_readers; i++) 2588 reader__release_decomp(&rd[i]); 2589 zfree(&rd); 2590 2591 return ret; 2592 } 2593 2594 int perf_session__process_events(struct perf_session *session) 2595 { 2596 if (perf_session__register_idle_thread(session) < 0) 2597 return -ENOMEM; 2598 2599 if (perf_data__is_pipe(session->data)) 2600 return __perf_session__process_pipe_events(session); 2601 2602 if (perf_data__is_dir(session->data) && session->data->dir.nr) 2603 return __perf_session__process_dir_events(session); 2604 2605 return __perf_session__process_events(session); 2606 } 2607 2608 bool perf_session__has_traces(struct perf_session *session, const char *msg) 2609 { 2610 struct evsel *evsel; 2611 2612 evlist__for_each_entry(session->evlist, evsel) { 2613 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) 2614 return true; 2615 } 2616 2617 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); 2618 return false; 2619 } 2620 2621 int map__set_kallsyms_ref_reloc_sym(struct map *map, const char *symbol_name, u64 addr) 2622 { 2623 char *bracket; 2624 struct ref_reloc_sym *ref; 2625 struct kmap *kmap; 2626 2627 ref = zalloc(sizeof(struct ref_reloc_sym)); 2628 if (ref == NULL) 2629 return -ENOMEM; 2630 2631 ref->name = strdup(symbol_name); 2632 if (ref->name == NULL) { 2633 free(ref); 2634 return -ENOMEM; 2635 } 2636 2637 bracket = strchr(ref->name, ']'); 2638 if (bracket) 2639 *bracket = '\0'; 2640 2641 ref->addr = addr; 2642 2643 kmap = map__kmap(map); 2644 if (kmap) 2645 kmap->ref_reloc_sym = ref; 2646 2647 return 0; 2648 } 2649 2650 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp) 2651 { 2652 return machines__fprintf_dsos(&session->machines, fp); 2653 } 2654 2655 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp, 2656 bool (skip)(struct dso *dso, int parm), int parm) 2657 { 2658 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm); 2659 } 2660 2661 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp, 2662 bool skip_empty) 2663 { 2664 size_t ret; 2665 const char *msg = ""; 2666 2667 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE)) 2668 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)"; 2669 2670 ret = fprintf(fp, "\nAggregated stats:%s\n", msg); 2671 2672 ret += events_stats__fprintf(&session->evlist->stats, fp, skip_empty); 2673 return ret; 2674 } 2675 2676 size_t perf_session__fprintf(struct perf_session *session, FILE *fp) 2677 { 2678 /* 2679 * FIXME: Here we have to actually print all the machines in this 2680 * session, not just the host... 2681 */ 2682 return machine__fprintf(&session->machines.host, fp); 2683 } 2684 2685 struct evsel *perf_session__find_first_evtype(struct perf_session *session, 2686 unsigned int type) 2687 { 2688 struct evsel *pos; 2689 2690 evlist__for_each_entry(session->evlist, pos) { 2691 if (pos->core.attr.type == type) 2692 return pos; 2693 } 2694 return NULL; 2695 } 2696 2697 int perf_session__cpu_bitmap(struct perf_session *session, 2698 const char *cpu_list, unsigned long *cpu_bitmap) 2699 { 2700 int i, err = -1; 2701 struct perf_cpu_map *map; 2702 int nr_cpus = min(session->header.env.nr_cpus_avail, MAX_NR_CPUS); 2703 2704 for (i = 0; i < PERF_TYPE_MAX; ++i) { 2705 struct evsel *evsel; 2706 2707 evsel = perf_session__find_first_evtype(session, i); 2708 if (!evsel) 2709 continue; 2710 2711 if (!(evsel->core.attr.sample_type & PERF_SAMPLE_CPU)) { 2712 pr_err("File does not contain CPU events. " 2713 "Remove -C option to proceed.\n"); 2714 return -1; 2715 } 2716 } 2717 2718 map = perf_cpu_map__new(cpu_list); 2719 if (map == NULL) { 2720 pr_err("Invalid cpu_list\n"); 2721 return -1; 2722 } 2723 2724 for (i = 0; i < perf_cpu_map__nr(map); i++) { 2725 struct perf_cpu cpu = perf_cpu_map__cpu(map, i); 2726 2727 if (cpu.cpu >= nr_cpus) { 2728 pr_err("Requested CPU %d too large. " 2729 "Consider raising MAX_NR_CPUS\n", cpu.cpu); 2730 goto out_delete_map; 2731 } 2732 2733 set_bit(cpu.cpu, cpu_bitmap); 2734 } 2735 2736 err = 0; 2737 2738 out_delete_map: 2739 perf_cpu_map__put(map); 2740 return err; 2741 } 2742 2743 void perf_session__fprintf_info(struct perf_session *session, FILE *fp, 2744 bool full) 2745 { 2746 if (session == NULL || fp == NULL) 2747 return; 2748 2749 fprintf(fp, "# ========\n"); 2750 perf_header__fprintf_info(session, fp, full); 2751 fprintf(fp, "# ========\n#\n"); 2752 } 2753 2754 int perf_event__process_id_index(struct perf_session *session, 2755 union perf_event *event) 2756 { 2757 struct evlist *evlist = session->evlist; 2758 struct perf_record_id_index *ie = &event->id_index; 2759 size_t i, nr, max_nr; 2760 2761 max_nr = (ie->header.size - sizeof(struct perf_record_id_index)) / 2762 sizeof(struct id_index_entry); 2763 nr = ie->nr; 2764 if (nr > max_nr) 2765 return -EINVAL; 2766 2767 if (dump_trace) 2768 fprintf(stdout, " nr: %zu\n", nr); 2769 2770 for (i = 0; i < nr; i++) { 2771 struct id_index_entry *e = &ie->entries[i]; 2772 struct perf_sample_id *sid; 2773 2774 if (dump_trace) { 2775 fprintf(stdout, " ... id: %"PRI_lu64, e->id); 2776 fprintf(stdout, " idx: %"PRI_lu64, e->idx); 2777 fprintf(stdout, " cpu: %"PRI_ld64, e->cpu); 2778 fprintf(stdout, " tid: %"PRI_ld64"\n", e->tid); 2779 } 2780 2781 sid = evlist__id2sid(evlist, e->id); 2782 if (!sid) 2783 return -ENOENT; 2784 sid->idx = e->idx; 2785 sid->cpu.cpu = e->cpu; 2786 sid->tid = e->tid; 2787 } 2788 return 0; 2789 } 2790