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 skipn(int fd, off_t n) 378 { 379 char buf[4096]; 380 ssize_t ret; 381 382 while (n > 0) { 383 ret = read(fd, buf, min(n, (off_t)sizeof(buf))); 384 if (ret <= 0) 385 return ret; 386 n -= ret; 387 } 388 389 return 0; 390 } 391 392 static s64 process_event_auxtrace_stub(struct perf_session *session __maybe_unused, 393 union perf_event *event) 394 { 395 dump_printf(": unhandled!\n"); 396 if (perf_data__is_pipe(session->data)) 397 skipn(perf_data__fd(session->data), event->auxtrace.size); 398 return event->auxtrace.size; 399 } 400 401 static int process_event_op2_stub(struct perf_session *session __maybe_unused, 402 union perf_event *event __maybe_unused) 403 { 404 dump_printf(": unhandled!\n"); 405 return 0; 406 } 407 408 409 static 410 int process_event_thread_map_stub(struct perf_session *session __maybe_unused, 411 union perf_event *event __maybe_unused) 412 { 413 if (dump_trace) 414 perf_event__fprintf_thread_map(event, stdout); 415 416 dump_printf(": unhandled!\n"); 417 return 0; 418 } 419 420 static 421 int process_event_cpu_map_stub(struct perf_session *session __maybe_unused, 422 union perf_event *event __maybe_unused) 423 { 424 if (dump_trace) 425 perf_event__fprintf_cpu_map(event, stdout); 426 427 dump_printf(": unhandled!\n"); 428 return 0; 429 } 430 431 static 432 int process_event_stat_config_stub(struct perf_session *session __maybe_unused, 433 union perf_event *event __maybe_unused) 434 { 435 if (dump_trace) 436 perf_event__fprintf_stat_config(event, stdout); 437 438 dump_printf(": unhandled!\n"); 439 return 0; 440 } 441 442 static int process_stat_stub(struct perf_session *perf_session __maybe_unused, 443 union perf_event *event) 444 { 445 if (dump_trace) 446 perf_event__fprintf_stat(event, stdout); 447 448 dump_printf(": unhandled!\n"); 449 return 0; 450 } 451 452 static int process_stat_round_stub(struct perf_session *perf_session __maybe_unused, 453 union perf_event *event) 454 { 455 if (dump_trace) 456 perf_event__fprintf_stat_round(event, stdout); 457 458 dump_printf(": unhandled!\n"); 459 return 0; 460 } 461 462 static int process_event_time_conv_stub(struct perf_session *perf_session __maybe_unused, 463 union perf_event *event) 464 { 465 if (dump_trace) 466 perf_event__fprintf_time_conv(event, stdout); 467 468 dump_printf(": unhandled!\n"); 469 return 0; 470 } 471 472 static int perf_session__process_compressed_event_stub(struct perf_session *session __maybe_unused, 473 union perf_event *event __maybe_unused, 474 u64 file_offset __maybe_unused, 475 const char *file_path __maybe_unused) 476 { 477 dump_printf(": unhandled!\n"); 478 return 0; 479 } 480 481 void perf_tool__fill_defaults(struct perf_tool *tool) 482 { 483 if (tool->sample == NULL) 484 tool->sample = process_event_sample_stub; 485 if (tool->mmap == NULL) 486 tool->mmap = process_event_stub; 487 if (tool->mmap2 == NULL) 488 tool->mmap2 = process_event_stub; 489 if (tool->comm == NULL) 490 tool->comm = process_event_stub; 491 if (tool->namespaces == NULL) 492 tool->namespaces = process_event_stub; 493 if (tool->cgroup == NULL) 494 tool->cgroup = process_event_stub; 495 if (tool->fork == NULL) 496 tool->fork = process_event_stub; 497 if (tool->exit == NULL) 498 tool->exit = process_event_stub; 499 if (tool->lost == NULL) 500 tool->lost = perf_event__process_lost; 501 if (tool->lost_samples == NULL) 502 tool->lost_samples = perf_event__process_lost_samples; 503 if (tool->aux == NULL) 504 tool->aux = perf_event__process_aux; 505 if (tool->itrace_start == NULL) 506 tool->itrace_start = perf_event__process_itrace_start; 507 if (tool->context_switch == NULL) 508 tool->context_switch = perf_event__process_switch; 509 if (tool->ksymbol == NULL) 510 tool->ksymbol = perf_event__process_ksymbol; 511 if (tool->bpf == NULL) 512 tool->bpf = perf_event__process_bpf; 513 if (tool->text_poke == NULL) 514 tool->text_poke = perf_event__process_text_poke; 515 if (tool->aux_output_hw_id == NULL) 516 tool->aux_output_hw_id = perf_event__process_aux_output_hw_id; 517 if (tool->read == NULL) 518 tool->read = process_event_sample_stub; 519 if (tool->throttle == NULL) 520 tool->throttle = process_event_stub; 521 if (tool->unthrottle == NULL) 522 tool->unthrottle = process_event_stub; 523 if (tool->attr == NULL) 524 tool->attr = process_event_synth_attr_stub; 525 if (tool->event_update == NULL) 526 tool->event_update = process_event_synth_event_update_stub; 527 if (tool->tracing_data == NULL) 528 tool->tracing_data = process_event_synth_tracing_data_stub; 529 if (tool->build_id == NULL) 530 tool->build_id = process_event_op2_stub; 531 if (tool->finished_round == NULL) { 532 if (tool->ordered_events) 533 tool->finished_round = perf_event__process_finished_round; 534 else 535 tool->finished_round = process_finished_round_stub; 536 } 537 if (tool->id_index == NULL) 538 tool->id_index = process_event_op2_stub; 539 if (tool->auxtrace_info == NULL) 540 tool->auxtrace_info = process_event_op2_stub; 541 if (tool->auxtrace == NULL) 542 tool->auxtrace = process_event_auxtrace_stub; 543 if (tool->auxtrace_error == NULL) 544 tool->auxtrace_error = process_event_op2_stub; 545 if (tool->thread_map == NULL) 546 tool->thread_map = process_event_thread_map_stub; 547 if (tool->cpu_map == NULL) 548 tool->cpu_map = process_event_cpu_map_stub; 549 if (tool->stat_config == NULL) 550 tool->stat_config = process_event_stat_config_stub; 551 if (tool->stat == NULL) 552 tool->stat = process_stat_stub; 553 if (tool->stat_round == NULL) 554 tool->stat_round = process_stat_round_stub; 555 if (tool->time_conv == NULL) 556 tool->time_conv = process_event_time_conv_stub; 557 if (tool->feature == NULL) 558 tool->feature = process_event_op2_stub; 559 if (tool->compressed == NULL) 560 tool->compressed = perf_session__process_compressed_event; 561 if (tool->finished_init == NULL) 562 tool->finished_init = process_event_op2_stub; 563 } 564 565 static void swap_sample_id_all(union perf_event *event, void *data) 566 { 567 void *end = (void *) event + event->header.size; 568 int size = end - data; 569 570 BUG_ON(size % sizeof(u64)); 571 mem_bswap_64(data, size); 572 } 573 574 static void perf_event__all64_swap(union perf_event *event, 575 bool sample_id_all __maybe_unused) 576 { 577 struct perf_event_header *hdr = &event->header; 578 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); 579 } 580 581 static void perf_event__comm_swap(union perf_event *event, bool sample_id_all) 582 { 583 event->comm.pid = bswap_32(event->comm.pid); 584 event->comm.tid = bswap_32(event->comm.tid); 585 586 if (sample_id_all) { 587 void *data = &event->comm.comm; 588 589 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 590 swap_sample_id_all(event, data); 591 } 592 } 593 594 static void perf_event__mmap_swap(union perf_event *event, 595 bool sample_id_all) 596 { 597 event->mmap.pid = bswap_32(event->mmap.pid); 598 event->mmap.tid = bswap_32(event->mmap.tid); 599 event->mmap.start = bswap_64(event->mmap.start); 600 event->mmap.len = bswap_64(event->mmap.len); 601 event->mmap.pgoff = bswap_64(event->mmap.pgoff); 602 603 if (sample_id_all) { 604 void *data = &event->mmap.filename; 605 606 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 607 swap_sample_id_all(event, data); 608 } 609 } 610 611 static void perf_event__mmap2_swap(union perf_event *event, 612 bool sample_id_all) 613 { 614 event->mmap2.pid = bswap_32(event->mmap2.pid); 615 event->mmap2.tid = bswap_32(event->mmap2.tid); 616 event->mmap2.start = bswap_64(event->mmap2.start); 617 event->mmap2.len = bswap_64(event->mmap2.len); 618 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff); 619 620 if (!(event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID)) { 621 event->mmap2.maj = bswap_32(event->mmap2.maj); 622 event->mmap2.min = bswap_32(event->mmap2.min); 623 event->mmap2.ino = bswap_64(event->mmap2.ino); 624 event->mmap2.ino_generation = bswap_64(event->mmap2.ino_generation); 625 } 626 627 if (sample_id_all) { 628 void *data = &event->mmap2.filename; 629 630 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 631 swap_sample_id_all(event, data); 632 } 633 } 634 static void perf_event__task_swap(union perf_event *event, bool sample_id_all) 635 { 636 event->fork.pid = bswap_32(event->fork.pid); 637 event->fork.tid = bswap_32(event->fork.tid); 638 event->fork.ppid = bswap_32(event->fork.ppid); 639 event->fork.ptid = bswap_32(event->fork.ptid); 640 event->fork.time = bswap_64(event->fork.time); 641 642 if (sample_id_all) 643 swap_sample_id_all(event, &event->fork + 1); 644 } 645 646 static void perf_event__read_swap(union perf_event *event, bool sample_id_all) 647 { 648 event->read.pid = bswap_32(event->read.pid); 649 event->read.tid = bswap_32(event->read.tid); 650 event->read.value = bswap_64(event->read.value); 651 event->read.time_enabled = bswap_64(event->read.time_enabled); 652 event->read.time_running = bswap_64(event->read.time_running); 653 event->read.id = bswap_64(event->read.id); 654 655 if (sample_id_all) 656 swap_sample_id_all(event, &event->read + 1); 657 } 658 659 static void perf_event__aux_swap(union perf_event *event, bool sample_id_all) 660 { 661 event->aux.aux_offset = bswap_64(event->aux.aux_offset); 662 event->aux.aux_size = bswap_64(event->aux.aux_size); 663 event->aux.flags = bswap_64(event->aux.flags); 664 665 if (sample_id_all) 666 swap_sample_id_all(event, &event->aux + 1); 667 } 668 669 static void perf_event__itrace_start_swap(union perf_event *event, 670 bool sample_id_all) 671 { 672 event->itrace_start.pid = bswap_32(event->itrace_start.pid); 673 event->itrace_start.tid = bswap_32(event->itrace_start.tid); 674 675 if (sample_id_all) 676 swap_sample_id_all(event, &event->itrace_start + 1); 677 } 678 679 static void perf_event__switch_swap(union perf_event *event, bool sample_id_all) 680 { 681 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) { 682 event->context_switch.next_prev_pid = 683 bswap_32(event->context_switch.next_prev_pid); 684 event->context_switch.next_prev_tid = 685 bswap_32(event->context_switch.next_prev_tid); 686 } 687 688 if (sample_id_all) 689 swap_sample_id_all(event, &event->context_switch + 1); 690 } 691 692 static void perf_event__text_poke_swap(union perf_event *event, bool sample_id_all) 693 { 694 event->text_poke.addr = bswap_64(event->text_poke.addr); 695 event->text_poke.old_len = bswap_16(event->text_poke.old_len); 696 event->text_poke.new_len = bswap_16(event->text_poke.new_len); 697 698 if (sample_id_all) { 699 size_t len = sizeof(event->text_poke.old_len) + 700 sizeof(event->text_poke.new_len) + 701 event->text_poke.old_len + 702 event->text_poke.new_len; 703 void *data = &event->text_poke.old_len; 704 705 data += PERF_ALIGN(len, sizeof(u64)); 706 swap_sample_id_all(event, data); 707 } 708 } 709 710 static void perf_event__throttle_swap(union perf_event *event, 711 bool sample_id_all) 712 { 713 event->throttle.time = bswap_64(event->throttle.time); 714 event->throttle.id = bswap_64(event->throttle.id); 715 event->throttle.stream_id = bswap_64(event->throttle.stream_id); 716 717 if (sample_id_all) 718 swap_sample_id_all(event, &event->throttle + 1); 719 } 720 721 static void perf_event__namespaces_swap(union perf_event *event, 722 bool sample_id_all) 723 { 724 u64 i; 725 726 event->namespaces.pid = bswap_32(event->namespaces.pid); 727 event->namespaces.tid = bswap_32(event->namespaces.tid); 728 event->namespaces.nr_namespaces = bswap_64(event->namespaces.nr_namespaces); 729 730 for (i = 0; i < event->namespaces.nr_namespaces; i++) { 731 struct perf_ns_link_info *ns = &event->namespaces.link_info[i]; 732 733 ns->dev = bswap_64(ns->dev); 734 ns->ino = bswap_64(ns->ino); 735 } 736 737 if (sample_id_all) 738 swap_sample_id_all(event, &event->namespaces.link_info[i]); 739 } 740 741 static void perf_event__cgroup_swap(union perf_event *event, bool sample_id_all) 742 { 743 event->cgroup.id = bswap_64(event->cgroup.id); 744 745 if (sample_id_all) { 746 void *data = &event->cgroup.path; 747 748 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 749 swap_sample_id_all(event, data); 750 } 751 } 752 753 static u8 revbyte(u8 b) 754 { 755 int rev = (b >> 4) | ((b & 0xf) << 4); 756 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2); 757 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1); 758 return (u8) rev; 759 } 760 761 /* 762 * XXX this is hack in attempt to carry flags bitfield 763 * through endian village. ABI says: 764 * 765 * Bit-fields are allocated from right to left (least to most significant) 766 * on little-endian implementations and from left to right (most to least 767 * significant) on big-endian implementations. 768 * 769 * The above seems to be byte specific, so we need to reverse each 770 * byte of the bitfield. 'Internet' also says this might be implementation 771 * specific and we probably need proper fix and carry perf_event_attr 772 * bitfield flags in separate data file FEAT_ section. Thought this seems 773 * to work for now. 774 */ 775 static void swap_bitfield(u8 *p, unsigned len) 776 { 777 unsigned i; 778 779 for (i = 0; i < len; i++) { 780 *p = revbyte(*p); 781 p++; 782 } 783 } 784 785 /* exported for swapping attributes in file header */ 786 void perf_event__attr_swap(struct perf_event_attr *attr) 787 { 788 attr->type = bswap_32(attr->type); 789 attr->size = bswap_32(attr->size); 790 791 #define bswap_safe(f, n) \ 792 (attr->size > (offsetof(struct perf_event_attr, f) + \ 793 sizeof(attr->f) * (n))) 794 #define bswap_field(f, sz) \ 795 do { \ 796 if (bswap_safe(f, 0)) \ 797 attr->f = bswap_##sz(attr->f); \ 798 } while(0) 799 #define bswap_field_16(f) bswap_field(f, 16) 800 #define bswap_field_32(f) bswap_field(f, 32) 801 #define bswap_field_64(f) bswap_field(f, 64) 802 803 bswap_field_64(config); 804 bswap_field_64(sample_period); 805 bswap_field_64(sample_type); 806 bswap_field_64(read_format); 807 bswap_field_32(wakeup_events); 808 bswap_field_32(bp_type); 809 bswap_field_64(bp_addr); 810 bswap_field_64(bp_len); 811 bswap_field_64(branch_sample_type); 812 bswap_field_64(sample_regs_user); 813 bswap_field_32(sample_stack_user); 814 bswap_field_32(aux_watermark); 815 bswap_field_16(sample_max_stack); 816 bswap_field_32(aux_sample_size); 817 818 /* 819 * After read_format are bitfields. Check read_format because 820 * we are unable to use offsetof on bitfield. 821 */ 822 if (bswap_safe(read_format, 1)) 823 swap_bitfield((u8 *) (&attr->read_format + 1), 824 sizeof(u64)); 825 #undef bswap_field_64 826 #undef bswap_field_32 827 #undef bswap_field 828 #undef bswap_safe 829 } 830 831 static void perf_event__hdr_attr_swap(union perf_event *event, 832 bool sample_id_all __maybe_unused) 833 { 834 size_t size; 835 836 perf_event__attr_swap(&event->attr.attr); 837 838 size = event->header.size; 839 size -= (void *)&event->attr.id - (void *)event; 840 mem_bswap_64(event->attr.id, size); 841 } 842 843 static void perf_event__event_update_swap(union perf_event *event, 844 bool sample_id_all __maybe_unused) 845 { 846 event->event_update.type = bswap_64(event->event_update.type); 847 event->event_update.id = bswap_64(event->event_update.id); 848 } 849 850 static void perf_event__event_type_swap(union perf_event *event, 851 bool sample_id_all __maybe_unused) 852 { 853 event->event_type.event_type.event_id = 854 bswap_64(event->event_type.event_type.event_id); 855 } 856 857 static void perf_event__tracing_data_swap(union perf_event *event, 858 bool sample_id_all __maybe_unused) 859 { 860 event->tracing_data.size = bswap_32(event->tracing_data.size); 861 } 862 863 static void perf_event__auxtrace_info_swap(union perf_event *event, 864 bool sample_id_all __maybe_unused) 865 { 866 size_t size; 867 868 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type); 869 870 size = event->header.size; 871 size -= (void *)&event->auxtrace_info.priv - (void *)event; 872 mem_bswap_64(event->auxtrace_info.priv, size); 873 } 874 875 static void perf_event__auxtrace_swap(union perf_event *event, 876 bool sample_id_all __maybe_unused) 877 { 878 event->auxtrace.size = bswap_64(event->auxtrace.size); 879 event->auxtrace.offset = bswap_64(event->auxtrace.offset); 880 event->auxtrace.reference = bswap_64(event->auxtrace.reference); 881 event->auxtrace.idx = bswap_32(event->auxtrace.idx); 882 event->auxtrace.tid = bswap_32(event->auxtrace.tid); 883 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu); 884 } 885 886 static void perf_event__auxtrace_error_swap(union perf_event *event, 887 bool sample_id_all __maybe_unused) 888 { 889 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type); 890 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code); 891 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu); 892 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid); 893 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid); 894 event->auxtrace_error.fmt = bswap_32(event->auxtrace_error.fmt); 895 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip); 896 if (event->auxtrace_error.fmt) 897 event->auxtrace_error.time = bswap_64(event->auxtrace_error.time); 898 if (event->auxtrace_error.fmt >= 2) { 899 event->auxtrace_error.machine_pid = bswap_32(event->auxtrace_error.machine_pid); 900 event->auxtrace_error.vcpu = bswap_32(event->auxtrace_error.vcpu); 901 } 902 } 903 904 static void perf_event__thread_map_swap(union perf_event *event, 905 bool sample_id_all __maybe_unused) 906 { 907 unsigned i; 908 909 event->thread_map.nr = bswap_64(event->thread_map.nr); 910 911 for (i = 0; i < event->thread_map.nr; i++) 912 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid); 913 } 914 915 static void perf_event__cpu_map_swap(union perf_event *event, 916 bool sample_id_all __maybe_unused) 917 { 918 struct perf_record_cpu_map_data *data = &event->cpu_map.data; 919 920 data->type = bswap_16(data->type); 921 922 switch (data->type) { 923 case PERF_CPU_MAP__CPUS: 924 data->cpus_data.nr = bswap_16(data->cpus_data.nr); 925 926 for (unsigned i = 0; i < data->cpus_data.nr; i++) 927 data->cpus_data.cpu[i] = bswap_16(data->cpus_data.cpu[i]); 928 break; 929 case PERF_CPU_MAP__MASK: 930 data->mask32_data.long_size = bswap_16(data->mask32_data.long_size); 931 932 switch (data->mask32_data.long_size) { 933 case 4: 934 data->mask32_data.nr = bswap_16(data->mask32_data.nr); 935 for (unsigned i = 0; i < data->mask32_data.nr; i++) 936 data->mask32_data.mask[i] = bswap_32(data->mask32_data.mask[i]); 937 break; 938 case 8: 939 data->mask64_data.nr = bswap_16(data->mask64_data.nr); 940 for (unsigned i = 0; i < data->mask64_data.nr; i++) 941 data->mask64_data.mask[i] = bswap_64(data->mask64_data.mask[i]); 942 break; 943 default: 944 pr_err("cpu_map swap: unsupported long size\n"); 945 } 946 default: 947 break; 948 } 949 } 950 951 static void perf_event__stat_config_swap(union perf_event *event, 952 bool sample_id_all __maybe_unused) 953 { 954 u64 size; 955 956 size = bswap_64(event->stat_config.nr) * sizeof(event->stat_config.data[0]); 957 size += 1; /* nr item itself */ 958 mem_bswap_64(&event->stat_config.nr, size); 959 } 960 961 static void perf_event__stat_swap(union perf_event *event, 962 bool sample_id_all __maybe_unused) 963 { 964 event->stat.id = bswap_64(event->stat.id); 965 event->stat.thread = bswap_32(event->stat.thread); 966 event->stat.cpu = bswap_32(event->stat.cpu); 967 event->stat.val = bswap_64(event->stat.val); 968 event->stat.ena = bswap_64(event->stat.ena); 969 event->stat.run = bswap_64(event->stat.run); 970 } 971 972 static void perf_event__stat_round_swap(union perf_event *event, 973 bool sample_id_all __maybe_unused) 974 { 975 event->stat_round.type = bswap_64(event->stat_round.type); 976 event->stat_round.time = bswap_64(event->stat_round.time); 977 } 978 979 static void perf_event__time_conv_swap(union perf_event *event, 980 bool sample_id_all __maybe_unused) 981 { 982 event->time_conv.time_shift = bswap_64(event->time_conv.time_shift); 983 event->time_conv.time_mult = bswap_64(event->time_conv.time_mult); 984 event->time_conv.time_zero = bswap_64(event->time_conv.time_zero); 985 986 if (event_contains(event->time_conv, time_cycles)) { 987 event->time_conv.time_cycles = bswap_64(event->time_conv.time_cycles); 988 event->time_conv.time_mask = bswap_64(event->time_conv.time_mask); 989 } 990 } 991 992 typedef void (*perf_event__swap_op)(union perf_event *event, 993 bool sample_id_all); 994 995 static perf_event__swap_op perf_event__swap_ops[] = { 996 [PERF_RECORD_MMAP] = perf_event__mmap_swap, 997 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap, 998 [PERF_RECORD_COMM] = perf_event__comm_swap, 999 [PERF_RECORD_FORK] = perf_event__task_swap, 1000 [PERF_RECORD_EXIT] = perf_event__task_swap, 1001 [PERF_RECORD_LOST] = perf_event__all64_swap, 1002 [PERF_RECORD_READ] = perf_event__read_swap, 1003 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap, 1004 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap, 1005 [PERF_RECORD_SAMPLE] = perf_event__all64_swap, 1006 [PERF_RECORD_AUX] = perf_event__aux_swap, 1007 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap, 1008 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap, 1009 [PERF_RECORD_SWITCH] = perf_event__switch_swap, 1010 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap, 1011 [PERF_RECORD_NAMESPACES] = perf_event__namespaces_swap, 1012 [PERF_RECORD_CGROUP] = perf_event__cgroup_swap, 1013 [PERF_RECORD_TEXT_POKE] = perf_event__text_poke_swap, 1014 [PERF_RECORD_AUX_OUTPUT_HW_ID] = perf_event__all64_swap, 1015 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, 1016 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, 1017 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, 1018 [PERF_RECORD_HEADER_BUILD_ID] = NULL, 1019 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap, 1020 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap, 1021 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap, 1022 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap, 1023 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap, 1024 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap, 1025 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap, 1026 [PERF_RECORD_STAT] = perf_event__stat_swap, 1027 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap, 1028 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap, 1029 [PERF_RECORD_TIME_CONV] = perf_event__time_conv_swap, 1030 [PERF_RECORD_HEADER_MAX] = NULL, 1031 }; 1032 1033 /* 1034 * When perf record finishes a pass on every buffers, it records this pseudo 1035 * event. 1036 * We record the max timestamp t found in the pass n. 1037 * Assuming these timestamps are monotonic across cpus, we know that if 1038 * a buffer still has events with timestamps below t, they will be all 1039 * available and then read in the pass n + 1. 1040 * Hence when we start to read the pass n + 2, we can safely flush every 1041 * events with timestamps below t. 1042 * 1043 * ============ PASS n ================= 1044 * CPU 0 | CPU 1 1045 * | 1046 * cnt1 timestamps | cnt2 timestamps 1047 * 1 | 2 1048 * 2 | 3 1049 * - | 4 <--- max recorded 1050 * 1051 * ============ PASS n + 1 ============== 1052 * CPU 0 | CPU 1 1053 * | 1054 * cnt1 timestamps | cnt2 timestamps 1055 * 3 | 5 1056 * 4 | 6 1057 * 5 | 7 <---- max recorded 1058 * 1059 * Flush every events below timestamp 4 1060 * 1061 * ============ PASS n + 2 ============== 1062 * CPU 0 | CPU 1 1063 * | 1064 * cnt1 timestamps | cnt2 timestamps 1065 * 6 | 8 1066 * 7 | 9 1067 * - | 10 1068 * 1069 * Flush every events below timestamp 7 1070 * etc... 1071 */ 1072 int perf_event__process_finished_round(struct perf_tool *tool __maybe_unused, 1073 union perf_event *event __maybe_unused, 1074 struct ordered_events *oe) 1075 { 1076 if (dump_trace) 1077 fprintf(stdout, "\n"); 1078 return ordered_events__flush(oe, OE_FLUSH__ROUND); 1079 } 1080 1081 int perf_session__queue_event(struct perf_session *s, union perf_event *event, 1082 u64 timestamp, u64 file_offset, const char *file_path) 1083 { 1084 return ordered_events__queue(&s->ordered_events, event, timestamp, file_offset, file_path); 1085 } 1086 1087 static void callchain__lbr_callstack_printf(struct perf_sample *sample) 1088 { 1089 struct ip_callchain *callchain = sample->callchain; 1090 struct branch_stack *lbr_stack = sample->branch_stack; 1091 struct branch_entry *entries = perf_sample__branch_entries(sample); 1092 u64 kernel_callchain_nr = callchain->nr; 1093 unsigned int i; 1094 1095 for (i = 0; i < kernel_callchain_nr; i++) { 1096 if (callchain->ips[i] == PERF_CONTEXT_USER) 1097 break; 1098 } 1099 1100 if ((i != kernel_callchain_nr) && lbr_stack->nr) { 1101 u64 total_nr; 1102 /* 1103 * LBR callstack can only get user call chain, 1104 * i is kernel call chain number, 1105 * 1 is PERF_CONTEXT_USER. 1106 * 1107 * The user call chain is stored in LBR registers. 1108 * LBR are pair registers. The caller is stored 1109 * in "from" register, while the callee is stored 1110 * in "to" register. 1111 * For example, there is a call stack 1112 * "A"->"B"->"C"->"D". 1113 * The LBR registers will be recorded like 1114 * "C"->"D", "B"->"C", "A"->"B". 1115 * So only the first "to" register and all "from" 1116 * registers are needed to construct the whole stack. 1117 */ 1118 total_nr = i + 1 + lbr_stack->nr + 1; 1119 kernel_callchain_nr = i + 1; 1120 1121 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr); 1122 1123 for (i = 0; i < kernel_callchain_nr; i++) 1124 printf("..... %2d: %016" PRIx64 "\n", 1125 i, callchain->ips[i]); 1126 1127 printf("..... %2d: %016" PRIx64 "\n", 1128 (int)(kernel_callchain_nr), entries[0].to); 1129 for (i = 0; i < lbr_stack->nr; i++) 1130 printf("..... %2d: %016" PRIx64 "\n", 1131 (int)(i + kernel_callchain_nr + 1), entries[i].from); 1132 } 1133 } 1134 1135 static void callchain__printf(struct evsel *evsel, 1136 struct perf_sample *sample) 1137 { 1138 unsigned int i; 1139 struct ip_callchain *callchain = sample->callchain; 1140 1141 if (evsel__has_branch_callstack(evsel)) 1142 callchain__lbr_callstack_printf(sample); 1143 1144 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr); 1145 1146 for (i = 0; i < callchain->nr; i++) 1147 printf("..... %2d: %016" PRIx64 "\n", 1148 i, callchain->ips[i]); 1149 } 1150 1151 static void branch_stack__printf(struct perf_sample *sample, bool callstack) 1152 { 1153 struct branch_entry *entries = perf_sample__branch_entries(sample); 1154 uint64_t i; 1155 1156 if (!callstack) { 1157 printf("%s: nr:%" PRIu64 "\n", "... branch stack", sample->branch_stack->nr); 1158 } else { 1159 /* the reason of adding 1 to nr is because after expanding 1160 * branch stack it generates nr + 1 callstack records. e.g., 1161 * B()->C() 1162 * A()->B() 1163 * the final callstack should be: 1164 * C() 1165 * B() 1166 * A() 1167 */ 1168 printf("%s: nr:%" PRIu64 "\n", "... branch callstack", sample->branch_stack->nr+1); 1169 } 1170 1171 for (i = 0; i < sample->branch_stack->nr; i++) { 1172 struct branch_entry *e = &entries[i]; 1173 1174 if (!callstack) { 1175 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x %s\n", 1176 i, e->from, e->to, 1177 (unsigned short)e->flags.cycles, 1178 e->flags.mispred ? "M" : " ", 1179 e->flags.predicted ? "P" : " ", 1180 e->flags.abort ? "A" : " ", 1181 e->flags.in_tx ? "T" : " ", 1182 (unsigned)e->flags.reserved, 1183 e->flags.type ? branch_type_name(e->flags.type) : ""); 1184 } else { 1185 if (i == 0) { 1186 printf("..... %2"PRIu64": %016" PRIx64 "\n" 1187 "..... %2"PRIu64": %016" PRIx64 "\n", 1188 i, e->to, i+1, e->from); 1189 } else { 1190 printf("..... %2"PRIu64": %016" PRIx64 "\n", i+1, e->from); 1191 } 1192 } 1193 } 1194 } 1195 1196 static void regs_dump__printf(u64 mask, u64 *regs, const char *arch) 1197 { 1198 unsigned rid, i = 0; 1199 1200 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) { 1201 u64 val = regs[i++]; 1202 1203 printf(".... %-5s 0x%016" PRIx64 "\n", 1204 perf_reg_name(rid, arch), val); 1205 } 1206 } 1207 1208 static const char *regs_abi[] = { 1209 [PERF_SAMPLE_REGS_ABI_NONE] = "none", 1210 [PERF_SAMPLE_REGS_ABI_32] = "32-bit", 1211 [PERF_SAMPLE_REGS_ABI_64] = "64-bit", 1212 }; 1213 1214 static inline const char *regs_dump_abi(struct regs_dump *d) 1215 { 1216 if (d->abi > PERF_SAMPLE_REGS_ABI_64) 1217 return "unknown"; 1218 1219 return regs_abi[d->abi]; 1220 } 1221 1222 static void regs__printf(const char *type, struct regs_dump *regs, const char *arch) 1223 { 1224 u64 mask = regs->mask; 1225 1226 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n", 1227 type, 1228 mask, 1229 regs_dump_abi(regs)); 1230 1231 regs_dump__printf(mask, regs->regs, arch); 1232 } 1233 1234 static void regs_user__printf(struct perf_sample *sample, const char *arch) 1235 { 1236 struct regs_dump *user_regs = &sample->user_regs; 1237 1238 if (user_regs->regs) 1239 regs__printf("user", user_regs, arch); 1240 } 1241 1242 static void regs_intr__printf(struct perf_sample *sample, const char *arch) 1243 { 1244 struct regs_dump *intr_regs = &sample->intr_regs; 1245 1246 if (intr_regs->regs) 1247 regs__printf("intr", intr_regs, arch); 1248 } 1249 1250 static void stack_user__printf(struct stack_dump *dump) 1251 { 1252 printf("... ustack: size %" PRIu64 ", offset 0x%x\n", 1253 dump->size, dump->offset); 1254 } 1255 1256 static void evlist__print_tstamp(struct evlist *evlist, union perf_event *event, struct perf_sample *sample) 1257 { 1258 u64 sample_type = __evlist__combined_sample_type(evlist); 1259 1260 if (event->header.type != PERF_RECORD_SAMPLE && 1261 !evlist__sample_id_all(evlist)) { 1262 fputs("-1 -1 ", stdout); 1263 return; 1264 } 1265 1266 if ((sample_type & PERF_SAMPLE_CPU)) 1267 printf("%u ", sample->cpu); 1268 1269 if (sample_type & PERF_SAMPLE_TIME) 1270 printf("%" PRIu64 " ", sample->time); 1271 } 1272 1273 static void sample_read__printf(struct perf_sample *sample, u64 read_format) 1274 { 1275 printf("... sample_read:\n"); 1276 1277 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 1278 printf("...... time enabled %016" PRIx64 "\n", 1279 sample->read.time_enabled); 1280 1281 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 1282 printf("...... time running %016" PRIx64 "\n", 1283 sample->read.time_running); 1284 1285 if (read_format & PERF_FORMAT_GROUP) { 1286 struct sample_read_value *value = sample->read.group.values; 1287 1288 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr); 1289 1290 sample_read_group__for_each(value, sample->read.group.nr, read_format) { 1291 printf("..... id %016" PRIx64 1292 ", value %016" PRIx64, 1293 value->id, value->value); 1294 if (read_format & PERF_FORMAT_LOST) 1295 printf(", lost %" PRIu64, value->lost); 1296 printf("\n"); 1297 } 1298 } else { 1299 printf("..... id %016" PRIx64 ", value %016" PRIx64, 1300 sample->read.one.id, sample->read.one.value); 1301 if (read_format & PERF_FORMAT_LOST) 1302 printf(", lost %" PRIu64, sample->read.one.lost); 1303 printf("\n"); 1304 } 1305 } 1306 1307 static void dump_event(struct evlist *evlist, union perf_event *event, 1308 u64 file_offset, struct perf_sample *sample, 1309 const char *file_path) 1310 { 1311 if (!dump_trace) 1312 return; 1313 1314 printf("\n%#" PRIx64 "@%s [%#x]: event: %d\n", 1315 file_offset, file_path, event->header.size, event->header.type); 1316 1317 trace_event(event); 1318 if (event->header.type == PERF_RECORD_SAMPLE && evlist->trace_event_sample_raw) 1319 evlist->trace_event_sample_raw(evlist, event, sample); 1320 1321 if (sample) 1322 evlist__print_tstamp(evlist, event, sample); 1323 1324 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, 1325 event->header.size, perf_event__name(event->header.type)); 1326 } 1327 1328 char *get_page_size_name(u64 size, char *str) 1329 { 1330 if (!size || !unit_number__scnprintf(str, PAGE_SIZE_NAME_LEN, size)) 1331 snprintf(str, PAGE_SIZE_NAME_LEN, "%s", "N/A"); 1332 1333 return str; 1334 } 1335 1336 static void dump_sample(struct evsel *evsel, union perf_event *event, 1337 struct perf_sample *sample, const char *arch) 1338 { 1339 u64 sample_type; 1340 char str[PAGE_SIZE_NAME_LEN]; 1341 1342 if (!dump_trace) 1343 return; 1344 1345 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", 1346 event->header.misc, sample->pid, sample->tid, sample->ip, 1347 sample->period, sample->addr); 1348 1349 sample_type = evsel->core.attr.sample_type; 1350 1351 if (evsel__has_callchain(evsel)) 1352 callchain__printf(evsel, sample); 1353 1354 if (evsel__has_br_stack(evsel)) 1355 branch_stack__printf(sample, evsel__has_branch_callstack(evsel)); 1356 1357 if (sample_type & PERF_SAMPLE_REGS_USER) 1358 regs_user__printf(sample, arch); 1359 1360 if (sample_type & PERF_SAMPLE_REGS_INTR) 1361 regs_intr__printf(sample, arch); 1362 1363 if (sample_type & PERF_SAMPLE_STACK_USER) 1364 stack_user__printf(&sample->user_stack); 1365 1366 if (sample_type & PERF_SAMPLE_WEIGHT_TYPE) { 1367 printf("... weight: %" PRIu64 "", sample->weight); 1368 if (sample_type & PERF_SAMPLE_WEIGHT_STRUCT) { 1369 printf(",0x%"PRIx16"", sample->ins_lat); 1370 printf(",0x%"PRIx16"", sample->p_stage_cyc); 1371 } 1372 printf("\n"); 1373 } 1374 1375 if (sample_type & PERF_SAMPLE_DATA_SRC) 1376 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src); 1377 1378 if (sample_type & PERF_SAMPLE_PHYS_ADDR) 1379 printf(" .. phys_addr: 0x%"PRIx64"\n", sample->phys_addr); 1380 1381 if (sample_type & PERF_SAMPLE_DATA_PAGE_SIZE) 1382 printf(" .. data page size: %s\n", get_page_size_name(sample->data_page_size, str)); 1383 1384 if (sample_type & PERF_SAMPLE_CODE_PAGE_SIZE) 1385 printf(" .. code page size: %s\n", get_page_size_name(sample->code_page_size, str)); 1386 1387 if (sample_type & PERF_SAMPLE_TRANSACTION) 1388 printf("... transaction: %" PRIx64 "\n", sample->transaction); 1389 1390 if (sample_type & PERF_SAMPLE_READ) 1391 sample_read__printf(sample, evsel->core.attr.read_format); 1392 } 1393 1394 static void dump_read(struct evsel *evsel, union perf_event *event) 1395 { 1396 struct perf_record_read *read_event = &event->read; 1397 u64 read_format; 1398 1399 if (!dump_trace) 1400 return; 1401 1402 printf(": %d %d %s %" PRI_lu64 "\n", event->read.pid, event->read.tid, 1403 evsel__name(evsel), event->read.value); 1404 1405 if (!evsel) 1406 return; 1407 1408 read_format = evsel->core.attr.read_format; 1409 1410 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 1411 printf("... time enabled : %" PRI_lu64 "\n", read_event->time_enabled); 1412 1413 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 1414 printf("... time running : %" PRI_lu64 "\n", read_event->time_running); 1415 1416 if (read_format & PERF_FORMAT_ID) 1417 printf("... id : %" PRI_lu64 "\n", read_event->id); 1418 1419 if (read_format & PERF_FORMAT_LOST) 1420 printf("... lost : %" PRI_lu64 "\n", read_event->lost); 1421 } 1422 1423 static struct machine *machines__find_for_cpumode(struct machines *machines, 1424 union perf_event *event, 1425 struct perf_sample *sample) 1426 { 1427 if (perf_guest && 1428 ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || 1429 (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) { 1430 u32 pid; 1431 1432 if (sample->machine_pid) 1433 pid = sample->machine_pid; 1434 else if (event->header.type == PERF_RECORD_MMAP 1435 || event->header.type == PERF_RECORD_MMAP2) 1436 pid = event->mmap.pid; 1437 else 1438 pid = sample->pid; 1439 1440 /* 1441 * Guest code machine is created as needed and does not use 1442 * DEFAULT_GUEST_KERNEL_ID. 1443 */ 1444 if (symbol_conf.guest_code) 1445 return machines__findnew(machines, pid); 1446 1447 return machines__find_guest(machines, pid); 1448 } 1449 1450 return &machines->host; 1451 } 1452 1453 static int deliver_sample_value(struct evlist *evlist, 1454 struct perf_tool *tool, 1455 union perf_event *event, 1456 struct perf_sample *sample, 1457 struct sample_read_value *v, 1458 struct machine *machine) 1459 { 1460 struct perf_sample_id *sid = evlist__id2sid(evlist, v->id); 1461 struct evsel *evsel; 1462 1463 if (sid) { 1464 sample->id = v->id; 1465 sample->period = v->value - sid->period; 1466 sid->period = v->value; 1467 } 1468 1469 if (!sid || sid->evsel == NULL) { 1470 ++evlist->stats.nr_unknown_id; 1471 return 0; 1472 } 1473 1474 /* 1475 * There's no reason to deliver sample 1476 * for zero period, bail out. 1477 */ 1478 if (!sample->period) 1479 return 0; 1480 1481 evsel = container_of(sid->evsel, struct evsel, core); 1482 return tool->sample(tool, event, sample, evsel, machine); 1483 } 1484 1485 static int deliver_sample_group(struct evlist *evlist, 1486 struct perf_tool *tool, 1487 union perf_event *event, 1488 struct perf_sample *sample, 1489 struct machine *machine, 1490 u64 read_format) 1491 { 1492 int ret = -EINVAL; 1493 struct sample_read_value *v = sample->read.group.values; 1494 1495 sample_read_group__for_each(v, sample->read.group.nr, read_format) { 1496 ret = deliver_sample_value(evlist, tool, event, sample, v, 1497 machine); 1498 if (ret) 1499 break; 1500 } 1501 1502 return ret; 1503 } 1504 1505 static int evlist__deliver_sample(struct evlist *evlist, struct perf_tool *tool, 1506 union perf_event *event, struct perf_sample *sample, 1507 struct evsel *evsel, struct machine *machine) 1508 { 1509 /* We know evsel != NULL. */ 1510 u64 sample_type = evsel->core.attr.sample_type; 1511 u64 read_format = evsel->core.attr.read_format; 1512 1513 /* Standard sample delivery. */ 1514 if (!(sample_type & PERF_SAMPLE_READ)) 1515 return tool->sample(tool, event, sample, evsel, machine); 1516 1517 /* For PERF_SAMPLE_READ we have either single or group mode. */ 1518 if (read_format & PERF_FORMAT_GROUP) 1519 return deliver_sample_group(evlist, tool, event, sample, 1520 machine, read_format); 1521 else 1522 return deliver_sample_value(evlist, tool, event, sample, 1523 &sample->read.one, machine); 1524 } 1525 1526 static int machines__deliver_event(struct machines *machines, 1527 struct evlist *evlist, 1528 union perf_event *event, 1529 struct perf_sample *sample, 1530 struct perf_tool *tool, u64 file_offset, 1531 const char *file_path) 1532 { 1533 struct evsel *evsel; 1534 struct machine *machine; 1535 1536 dump_event(evlist, event, file_offset, sample, file_path); 1537 1538 evsel = evlist__id2evsel(evlist, sample->id); 1539 1540 machine = machines__find_for_cpumode(machines, event, sample); 1541 1542 switch (event->header.type) { 1543 case PERF_RECORD_SAMPLE: 1544 if (evsel == NULL) { 1545 ++evlist->stats.nr_unknown_id; 1546 return 0; 1547 } 1548 if (machine == NULL) { 1549 ++evlist->stats.nr_unprocessable_samples; 1550 dump_sample(evsel, event, sample, perf_env__arch(NULL)); 1551 return 0; 1552 } 1553 dump_sample(evsel, event, sample, perf_env__arch(machine->env)); 1554 return evlist__deliver_sample(evlist, tool, event, sample, evsel, machine); 1555 case PERF_RECORD_MMAP: 1556 return tool->mmap(tool, event, sample, machine); 1557 case PERF_RECORD_MMAP2: 1558 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT) 1559 ++evlist->stats.nr_proc_map_timeout; 1560 return tool->mmap2(tool, event, sample, machine); 1561 case PERF_RECORD_COMM: 1562 return tool->comm(tool, event, sample, machine); 1563 case PERF_RECORD_NAMESPACES: 1564 return tool->namespaces(tool, event, sample, machine); 1565 case PERF_RECORD_CGROUP: 1566 return tool->cgroup(tool, event, sample, machine); 1567 case PERF_RECORD_FORK: 1568 return tool->fork(tool, event, sample, machine); 1569 case PERF_RECORD_EXIT: 1570 return tool->exit(tool, event, sample, machine); 1571 case PERF_RECORD_LOST: 1572 if (tool->lost == perf_event__process_lost) 1573 evlist->stats.total_lost += event->lost.lost; 1574 return tool->lost(tool, event, sample, machine); 1575 case PERF_RECORD_LOST_SAMPLES: 1576 if (tool->lost_samples == perf_event__process_lost_samples) 1577 evlist->stats.total_lost_samples += event->lost_samples.lost; 1578 return tool->lost_samples(tool, event, sample, machine); 1579 case PERF_RECORD_READ: 1580 dump_read(evsel, event); 1581 return tool->read(tool, event, sample, evsel, machine); 1582 case PERF_RECORD_THROTTLE: 1583 return tool->throttle(tool, event, sample, machine); 1584 case PERF_RECORD_UNTHROTTLE: 1585 return tool->unthrottle(tool, event, sample, machine); 1586 case PERF_RECORD_AUX: 1587 if (tool->aux == perf_event__process_aux) { 1588 if (event->aux.flags & PERF_AUX_FLAG_TRUNCATED) 1589 evlist->stats.total_aux_lost += 1; 1590 if (event->aux.flags & PERF_AUX_FLAG_PARTIAL) 1591 evlist->stats.total_aux_partial += 1; 1592 if (event->aux.flags & PERF_AUX_FLAG_COLLISION) 1593 evlist->stats.total_aux_collision += 1; 1594 } 1595 return tool->aux(tool, event, sample, machine); 1596 case PERF_RECORD_ITRACE_START: 1597 return tool->itrace_start(tool, event, sample, machine); 1598 case PERF_RECORD_SWITCH: 1599 case PERF_RECORD_SWITCH_CPU_WIDE: 1600 return tool->context_switch(tool, event, sample, machine); 1601 case PERF_RECORD_KSYMBOL: 1602 return tool->ksymbol(tool, event, sample, machine); 1603 case PERF_RECORD_BPF_EVENT: 1604 return tool->bpf(tool, event, sample, machine); 1605 case PERF_RECORD_TEXT_POKE: 1606 return tool->text_poke(tool, event, sample, machine); 1607 case PERF_RECORD_AUX_OUTPUT_HW_ID: 1608 return tool->aux_output_hw_id(tool, event, sample, machine); 1609 default: 1610 ++evlist->stats.nr_unknown_events; 1611 return -1; 1612 } 1613 } 1614 1615 static int perf_session__deliver_event(struct perf_session *session, 1616 union perf_event *event, 1617 struct perf_tool *tool, 1618 u64 file_offset, 1619 const char *file_path) 1620 { 1621 struct perf_sample sample; 1622 int ret = evlist__parse_sample(session->evlist, event, &sample); 1623 1624 if (ret) { 1625 pr_err("Can't parse sample, err = %d\n", ret); 1626 return ret; 1627 } 1628 1629 ret = auxtrace__process_event(session, event, &sample, tool); 1630 if (ret < 0) 1631 return ret; 1632 if (ret > 0) 1633 return 0; 1634 1635 ret = machines__deliver_event(&session->machines, session->evlist, 1636 event, &sample, tool, file_offset, file_path); 1637 1638 if (dump_trace && sample.aux_sample.size) 1639 auxtrace__dump_auxtrace_sample(session, &sample); 1640 1641 return ret; 1642 } 1643 1644 static s64 perf_session__process_user_event(struct perf_session *session, 1645 union perf_event *event, 1646 u64 file_offset, 1647 const char *file_path) 1648 { 1649 struct ordered_events *oe = &session->ordered_events; 1650 struct perf_tool *tool = session->tool; 1651 struct perf_sample sample = { .time = 0, }; 1652 int fd = perf_data__fd(session->data); 1653 int err; 1654 1655 if (event->header.type != PERF_RECORD_COMPRESSED || 1656 tool->compressed == perf_session__process_compressed_event_stub) 1657 dump_event(session->evlist, event, file_offset, &sample, file_path); 1658 1659 /* These events are processed right away */ 1660 switch (event->header.type) { 1661 case PERF_RECORD_HEADER_ATTR: 1662 err = tool->attr(tool, event, &session->evlist); 1663 if (err == 0) { 1664 perf_session__set_id_hdr_size(session); 1665 perf_session__set_comm_exec(session); 1666 } 1667 return err; 1668 case PERF_RECORD_EVENT_UPDATE: 1669 return tool->event_update(tool, event, &session->evlist); 1670 case PERF_RECORD_HEADER_EVENT_TYPE: 1671 /* 1672 * Deprecated, but we need to handle it for sake 1673 * of old data files create in pipe mode. 1674 */ 1675 return 0; 1676 case PERF_RECORD_HEADER_TRACING_DATA: 1677 /* 1678 * Setup for reading amidst mmap, but only when we 1679 * are in 'file' mode. The 'pipe' fd is in proper 1680 * place already. 1681 */ 1682 if (!perf_data__is_pipe(session->data)) 1683 lseek(fd, file_offset, SEEK_SET); 1684 return tool->tracing_data(session, event); 1685 case PERF_RECORD_HEADER_BUILD_ID: 1686 return tool->build_id(session, event); 1687 case PERF_RECORD_FINISHED_ROUND: 1688 return tool->finished_round(tool, event, oe); 1689 case PERF_RECORD_ID_INDEX: 1690 return tool->id_index(session, event); 1691 case PERF_RECORD_AUXTRACE_INFO: 1692 return tool->auxtrace_info(session, event); 1693 case PERF_RECORD_AUXTRACE: 1694 /* setup for reading amidst mmap */ 1695 lseek(fd, file_offset + event->header.size, SEEK_SET); 1696 return tool->auxtrace(session, event); 1697 case PERF_RECORD_AUXTRACE_ERROR: 1698 perf_session__auxtrace_error_inc(session, event); 1699 return tool->auxtrace_error(session, event); 1700 case PERF_RECORD_THREAD_MAP: 1701 return tool->thread_map(session, event); 1702 case PERF_RECORD_CPU_MAP: 1703 return tool->cpu_map(session, event); 1704 case PERF_RECORD_STAT_CONFIG: 1705 return tool->stat_config(session, event); 1706 case PERF_RECORD_STAT: 1707 return tool->stat(session, event); 1708 case PERF_RECORD_STAT_ROUND: 1709 return tool->stat_round(session, event); 1710 case PERF_RECORD_TIME_CONV: 1711 session->time_conv = event->time_conv; 1712 return tool->time_conv(session, event); 1713 case PERF_RECORD_HEADER_FEATURE: 1714 return tool->feature(session, event); 1715 case PERF_RECORD_COMPRESSED: 1716 err = tool->compressed(session, event, file_offset, file_path); 1717 if (err) 1718 dump_event(session->evlist, event, file_offset, &sample, file_path); 1719 return err; 1720 case PERF_RECORD_FINISHED_INIT: 1721 return tool->finished_init(session, event); 1722 default: 1723 return -EINVAL; 1724 } 1725 } 1726 1727 int perf_session__deliver_synth_event(struct perf_session *session, 1728 union perf_event *event, 1729 struct perf_sample *sample) 1730 { 1731 struct evlist *evlist = session->evlist; 1732 struct perf_tool *tool = session->tool; 1733 1734 events_stats__inc(&evlist->stats, event->header.type); 1735 1736 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1737 return perf_session__process_user_event(session, event, 0, NULL); 1738 1739 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0, NULL); 1740 } 1741 1742 static void event_swap(union perf_event *event, bool sample_id_all) 1743 { 1744 perf_event__swap_op swap; 1745 1746 swap = perf_event__swap_ops[event->header.type]; 1747 if (swap) 1748 swap(event, sample_id_all); 1749 } 1750 1751 int perf_session__peek_event(struct perf_session *session, off_t file_offset, 1752 void *buf, size_t buf_sz, 1753 union perf_event **event_ptr, 1754 struct perf_sample *sample) 1755 { 1756 union perf_event *event; 1757 size_t hdr_sz, rest; 1758 int fd; 1759 1760 if (session->one_mmap && !session->header.needs_swap) { 1761 event = file_offset - session->one_mmap_offset + 1762 session->one_mmap_addr; 1763 goto out_parse_sample; 1764 } 1765 1766 if (perf_data__is_pipe(session->data)) 1767 return -1; 1768 1769 fd = perf_data__fd(session->data); 1770 hdr_sz = sizeof(struct perf_event_header); 1771 1772 if (buf_sz < hdr_sz) 1773 return -1; 1774 1775 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 || 1776 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz) 1777 return -1; 1778 1779 event = (union perf_event *)buf; 1780 1781 if (session->header.needs_swap) 1782 perf_event_header__bswap(&event->header); 1783 1784 if (event->header.size < hdr_sz || event->header.size > buf_sz) 1785 return -1; 1786 1787 buf += hdr_sz; 1788 rest = event->header.size - hdr_sz; 1789 1790 if (readn(fd, buf, rest) != (ssize_t)rest) 1791 return -1; 1792 1793 if (session->header.needs_swap) 1794 event_swap(event, evlist__sample_id_all(session->evlist)); 1795 1796 out_parse_sample: 1797 1798 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START && 1799 evlist__parse_sample(session->evlist, event, sample)) 1800 return -1; 1801 1802 *event_ptr = event; 1803 1804 return 0; 1805 } 1806 1807 int perf_session__peek_events(struct perf_session *session, u64 offset, 1808 u64 size, peek_events_cb_t cb, void *data) 1809 { 1810 u64 max_offset = offset + size; 1811 char buf[PERF_SAMPLE_MAX_SIZE]; 1812 union perf_event *event; 1813 int err; 1814 1815 do { 1816 err = perf_session__peek_event(session, offset, buf, 1817 PERF_SAMPLE_MAX_SIZE, &event, 1818 NULL); 1819 if (err) 1820 return err; 1821 1822 err = cb(session, event, offset, data); 1823 if (err) 1824 return err; 1825 1826 offset += event->header.size; 1827 if (event->header.type == PERF_RECORD_AUXTRACE) 1828 offset += event->auxtrace.size; 1829 1830 } while (offset < max_offset); 1831 1832 return err; 1833 } 1834 1835 static s64 perf_session__process_event(struct perf_session *session, 1836 union perf_event *event, u64 file_offset, 1837 const char *file_path) 1838 { 1839 struct evlist *evlist = session->evlist; 1840 struct perf_tool *tool = session->tool; 1841 int ret; 1842 1843 if (session->header.needs_swap) 1844 event_swap(event, evlist__sample_id_all(evlist)); 1845 1846 if (event->header.type >= PERF_RECORD_HEADER_MAX) 1847 return -EINVAL; 1848 1849 events_stats__inc(&evlist->stats, event->header.type); 1850 1851 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1852 return perf_session__process_user_event(session, event, file_offset, file_path); 1853 1854 if (tool->ordered_events) { 1855 u64 timestamp = -1ULL; 1856 1857 ret = evlist__parse_sample_timestamp(evlist, event, ×tamp); 1858 if (ret && ret != -1) 1859 return ret; 1860 1861 ret = perf_session__queue_event(session, event, timestamp, file_offset, file_path); 1862 if (ret != -ETIME) 1863 return ret; 1864 } 1865 1866 return perf_session__deliver_event(session, event, tool, file_offset, file_path); 1867 } 1868 1869 void perf_event_header__bswap(struct perf_event_header *hdr) 1870 { 1871 hdr->type = bswap_32(hdr->type); 1872 hdr->misc = bswap_16(hdr->misc); 1873 hdr->size = bswap_16(hdr->size); 1874 } 1875 1876 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) 1877 { 1878 return machine__findnew_thread(&session->machines.host, -1, pid); 1879 } 1880 1881 int perf_session__register_idle_thread(struct perf_session *session) 1882 { 1883 struct thread *thread = machine__idle_thread(&session->machines.host); 1884 1885 /* machine__idle_thread() got the thread, so put it */ 1886 thread__put(thread); 1887 return thread ? 0 : -1; 1888 } 1889 1890 static void 1891 perf_session__warn_order(const struct perf_session *session) 1892 { 1893 const struct ordered_events *oe = &session->ordered_events; 1894 struct evsel *evsel; 1895 bool should_warn = true; 1896 1897 evlist__for_each_entry(session->evlist, evsel) { 1898 if (evsel->core.attr.write_backward) 1899 should_warn = false; 1900 } 1901 1902 if (!should_warn) 1903 return; 1904 if (oe->nr_unordered_events != 0) 1905 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events); 1906 } 1907 1908 static void perf_session__warn_about_errors(const struct perf_session *session) 1909 { 1910 const struct events_stats *stats = &session->evlist->stats; 1911 1912 if (session->tool->lost == perf_event__process_lost && 1913 stats->nr_events[PERF_RECORD_LOST] != 0) { 1914 ui__warning("Processed %d events and lost %d chunks!\n\n" 1915 "Check IO/CPU overload!\n\n", 1916 stats->nr_events[0], 1917 stats->nr_events[PERF_RECORD_LOST]); 1918 } 1919 1920 if (session->tool->lost_samples == perf_event__process_lost_samples) { 1921 double drop_rate; 1922 1923 drop_rate = (double)stats->total_lost_samples / 1924 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples); 1925 if (drop_rate > 0.05) { 1926 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%%!\n\n", 1927 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples, 1928 drop_rate * 100.0); 1929 } 1930 } 1931 1932 if (session->tool->aux == perf_event__process_aux && 1933 stats->total_aux_lost != 0) { 1934 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n", 1935 stats->total_aux_lost, 1936 stats->nr_events[PERF_RECORD_AUX]); 1937 } 1938 1939 if (session->tool->aux == perf_event__process_aux && 1940 stats->total_aux_partial != 0) { 1941 bool vmm_exclusive = false; 1942 1943 (void)sysfs__read_bool("module/kvm_intel/parameters/vmm_exclusive", 1944 &vmm_exclusive); 1945 1946 ui__warning("AUX data had gaps in it %" PRIu64 " times out of %u!\n\n" 1947 "Are you running a KVM guest in the background?%s\n\n", 1948 stats->total_aux_partial, 1949 stats->nr_events[PERF_RECORD_AUX], 1950 vmm_exclusive ? 1951 "\nReloading kvm_intel module with vmm_exclusive=0\n" 1952 "will reduce the gaps to only guest's timeslices." : 1953 ""); 1954 } 1955 1956 if (session->tool->aux == perf_event__process_aux && 1957 stats->total_aux_collision != 0) { 1958 ui__warning("AUX data detected collision %" PRIu64 " times out of %u!\n\n", 1959 stats->total_aux_collision, 1960 stats->nr_events[PERF_RECORD_AUX]); 1961 } 1962 1963 if (stats->nr_unknown_events != 0) { 1964 ui__warning("Found %u unknown events!\n\n" 1965 "Is this an older tool processing a perf.data " 1966 "file generated by a more recent tool?\n\n" 1967 "If that is not the case, consider " 1968 "reporting to linux-kernel@vger.kernel.org.\n\n", 1969 stats->nr_unknown_events); 1970 } 1971 1972 if (stats->nr_unknown_id != 0) { 1973 ui__warning("%u samples with id not present in the header\n", 1974 stats->nr_unknown_id); 1975 } 1976 1977 if (stats->nr_invalid_chains != 0) { 1978 ui__warning("Found invalid callchains!\n\n" 1979 "%u out of %u events were discarded for this reason.\n\n" 1980 "Consider reporting to linux-kernel@vger.kernel.org.\n\n", 1981 stats->nr_invalid_chains, 1982 stats->nr_events[PERF_RECORD_SAMPLE]); 1983 } 1984 1985 if (stats->nr_unprocessable_samples != 0) { 1986 ui__warning("%u unprocessable samples recorded.\n" 1987 "Do you have a KVM guest running and not using 'perf kvm'?\n", 1988 stats->nr_unprocessable_samples); 1989 } 1990 1991 perf_session__warn_order(session); 1992 1993 events_stats__auxtrace_error_warn(stats); 1994 1995 if (stats->nr_proc_map_timeout != 0) { 1996 ui__warning("%d map information files for pre-existing threads were\n" 1997 "not processed, if there are samples for addresses they\n" 1998 "will not be resolved, you may find out which are these\n" 1999 "threads by running with -v and redirecting the output\n" 2000 "to a file.\n" 2001 "The time limit to process proc map is too short?\n" 2002 "Increase it by --proc-map-timeout\n", 2003 stats->nr_proc_map_timeout); 2004 } 2005 } 2006 2007 static int perf_session__flush_thread_stack(struct thread *thread, 2008 void *p __maybe_unused) 2009 { 2010 return thread_stack__flush(thread); 2011 } 2012 2013 static int perf_session__flush_thread_stacks(struct perf_session *session) 2014 { 2015 return machines__for_each_thread(&session->machines, 2016 perf_session__flush_thread_stack, 2017 NULL); 2018 } 2019 2020 volatile int session_done; 2021 2022 static int __perf_session__process_decomp_events(struct perf_session *session); 2023 2024 static int __perf_session__process_pipe_events(struct perf_session *session) 2025 { 2026 struct ordered_events *oe = &session->ordered_events; 2027 struct perf_tool *tool = session->tool; 2028 union perf_event *event; 2029 uint32_t size, cur_size = 0; 2030 void *buf = NULL; 2031 s64 skip = 0; 2032 u64 head; 2033 ssize_t err; 2034 void *p; 2035 2036 perf_tool__fill_defaults(tool); 2037 2038 head = 0; 2039 cur_size = sizeof(union perf_event); 2040 2041 buf = malloc(cur_size); 2042 if (!buf) 2043 return -errno; 2044 ordered_events__set_copy_on_queue(oe, true); 2045 more: 2046 event = buf; 2047 err = perf_data__read(session->data, event, 2048 sizeof(struct perf_event_header)); 2049 if (err <= 0) { 2050 if (err == 0) 2051 goto done; 2052 2053 pr_err("failed to read event header\n"); 2054 goto out_err; 2055 } 2056 2057 if (session->header.needs_swap) 2058 perf_event_header__bswap(&event->header); 2059 2060 size = event->header.size; 2061 if (size < sizeof(struct perf_event_header)) { 2062 pr_err("bad event header size\n"); 2063 goto out_err; 2064 } 2065 2066 if (size > cur_size) { 2067 void *new = realloc(buf, size); 2068 if (!new) { 2069 pr_err("failed to allocate memory to read event\n"); 2070 goto out_err; 2071 } 2072 buf = new; 2073 cur_size = size; 2074 event = buf; 2075 } 2076 p = event; 2077 p += sizeof(struct perf_event_header); 2078 2079 if (size - sizeof(struct perf_event_header)) { 2080 err = perf_data__read(session->data, p, 2081 size - sizeof(struct perf_event_header)); 2082 if (err <= 0) { 2083 if (err == 0) { 2084 pr_err("unexpected end of event stream\n"); 2085 goto done; 2086 } 2087 2088 pr_err("failed to read event data\n"); 2089 goto out_err; 2090 } 2091 } 2092 2093 if ((skip = perf_session__process_event(session, event, head, "pipe")) < 0) { 2094 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 2095 head, event->header.size, event->header.type); 2096 err = -EINVAL; 2097 goto out_err; 2098 } 2099 2100 head += size; 2101 2102 if (skip > 0) 2103 head += skip; 2104 2105 err = __perf_session__process_decomp_events(session); 2106 if (err) 2107 goto out_err; 2108 2109 if (!session_done()) 2110 goto more; 2111 done: 2112 /* do the final flush for ordered samples */ 2113 err = ordered_events__flush(oe, OE_FLUSH__FINAL); 2114 if (err) 2115 goto out_err; 2116 err = auxtrace__flush_events(session, tool); 2117 if (err) 2118 goto out_err; 2119 err = perf_session__flush_thread_stacks(session); 2120 out_err: 2121 free(buf); 2122 if (!tool->no_warn) 2123 perf_session__warn_about_errors(session); 2124 ordered_events__free(&session->ordered_events); 2125 auxtrace__free_events(session); 2126 return err; 2127 } 2128 2129 static union perf_event * 2130 prefetch_event(char *buf, u64 head, size_t mmap_size, 2131 bool needs_swap, union perf_event *error) 2132 { 2133 union perf_event *event; 2134 u16 event_size; 2135 2136 /* 2137 * Ensure we have enough space remaining to read 2138 * the size of the event in the headers. 2139 */ 2140 if (head + sizeof(event->header) > mmap_size) 2141 return NULL; 2142 2143 event = (union perf_event *)(buf + head); 2144 if (needs_swap) 2145 perf_event_header__bswap(&event->header); 2146 2147 event_size = event->header.size; 2148 if (head + event_size <= mmap_size) 2149 return event; 2150 2151 /* We're not fetching the event so swap back again */ 2152 if (needs_swap) 2153 perf_event_header__bswap(&event->header); 2154 2155 /* Check if the event fits into the next mmapped buf. */ 2156 if (event_size <= mmap_size - head % page_size) { 2157 /* Remap buf and fetch again. */ 2158 return NULL; 2159 } 2160 2161 /* Invalid input. Event size should never exceed mmap_size. */ 2162 pr_debug("%s: head=%#" PRIx64 " event->header.size=%#x, mmap_size=%#zx:" 2163 " fuzzed or compressed perf.data?\n", __func__, head, event_size, mmap_size); 2164 2165 return error; 2166 } 2167 2168 static union perf_event * 2169 fetch_mmaped_event(u64 head, size_t mmap_size, char *buf, bool needs_swap) 2170 { 2171 return prefetch_event(buf, head, mmap_size, needs_swap, ERR_PTR(-EINVAL)); 2172 } 2173 2174 static union perf_event * 2175 fetch_decomp_event(u64 head, size_t mmap_size, char *buf, bool needs_swap) 2176 { 2177 return prefetch_event(buf, head, mmap_size, needs_swap, NULL); 2178 } 2179 2180 static int __perf_session__process_decomp_events(struct perf_session *session) 2181 { 2182 s64 skip; 2183 u64 size; 2184 struct decomp *decomp = session->active_decomp->decomp_last; 2185 2186 if (!decomp) 2187 return 0; 2188 2189 while (decomp->head < decomp->size && !session_done()) { 2190 union perf_event *event = fetch_decomp_event(decomp->head, decomp->size, decomp->data, 2191 session->header.needs_swap); 2192 2193 if (!event) 2194 break; 2195 2196 size = event->header.size; 2197 2198 if (size < sizeof(struct perf_event_header) || 2199 (skip = perf_session__process_event(session, event, decomp->file_pos, 2200 decomp->file_path)) < 0) { 2201 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 2202 decomp->file_pos + decomp->head, event->header.size, event->header.type); 2203 return -EINVAL; 2204 } 2205 2206 if (skip) 2207 size += skip; 2208 2209 decomp->head += size; 2210 } 2211 2212 return 0; 2213 } 2214 2215 /* 2216 * On 64bit we can mmap the data file in one go. No need for tiny mmap 2217 * slices. On 32bit we use 32MB. 2218 */ 2219 #if BITS_PER_LONG == 64 2220 #define MMAP_SIZE ULLONG_MAX 2221 #define NUM_MMAPS 1 2222 #else 2223 #define MMAP_SIZE (32 * 1024 * 1024ULL) 2224 #define NUM_MMAPS 128 2225 #endif 2226 2227 struct reader; 2228 2229 typedef s64 (*reader_cb_t)(struct perf_session *session, 2230 union perf_event *event, 2231 u64 file_offset, 2232 const char *file_path); 2233 2234 struct reader { 2235 int fd; 2236 const char *path; 2237 u64 data_size; 2238 u64 data_offset; 2239 reader_cb_t process; 2240 bool in_place_update; 2241 char *mmaps[NUM_MMAPS]; 2242 size_t mmap_size; 2243 int mmap_idx; 2244 char *mmap_cur; 2245 u64 file_pos; 2246 u64 file_offset; 2247 u64 head; 2248 u64 size; 2249 bool done; 2250 struct zstd_data zstd_data; 2251 struct decomp_data decomp_data; 2252 }; 2253 2254 static int 2255 reader__init(struct reader *rd, bool *one_mmap) 2256 { 2257 u64 data_size = rd->data_size; 2258 char **mmaps = rd->mmaps; 2259 2260 rd->head = rd->data_offset; 2261 data_size += rd->data_offset; 2262 2263 rd->mmap_size = MMAP_SIZE; 2264 if (rd->mmap_size > data_size) { 2265 rd->mmap_size = data_size; 2266 if (one_mmap) 2267 *one_mmap = true; 2268 } 2269 2270 memset(mmaps, 0, sizeof(rd->mmaps)); 2271 2272 if (zstd_init(&rd->zstd_data, 0)) 2273 return -1; 2274 rd->decomp_data.zstd_decomp = &rd->zstd_data; 2275 2276 return 0; 2277 } 2278 2279 static void 2280 reader__release_decomp(struct reader *rd) 2281 { 2282 perf_decomp__release_events(rd->decomp_data.decomp); 2283 zstd_fini(&rd->zstd_data); 2284 } 2285 2286 static int 2287 reader__mmap(struct reader *rd, struct perf_session *session) 2288 { 2289 int mmap_prot, mmap_flags; 2290 char *buf, **mmaps = rd->mmaps; 2291 u64 page_offset; 2292 2293 mmap_prot = PROT_READ; 2294 mmap_flags = MAP_SHARED; 2295 2296 if (rd->in_place_update) { 2297 mmap_prot |= PROT_WRITE; 2298 } else if (session->header.needs_swap) { 2299 mmap_prot |= PROT_WRITE; 2300 mmap_flags = MAP_PRIVATE; 2301 } 2302 2303 if (mmaps[rd->mmap_idx]) { 2304 munmap(mmaps[rd->mmap_idx], rd->mmap_size); 2305 mmaps[rd->mmap_idx] = NULL; 2306 } 2307 2308 page_offset = page_size * (rd->head / page_size); 2309 rd->file_offset += page_offset; 2310 rd->head -= page_offset; 2311 2312 buf = mmap(NULL, rd->mmap_size, mmap_prot, mmap_flags, rd->fd, 2313 rd->file_offset); 2314 if (buf == MAP_FAILED) { 2315 pr_err("failed to mmap file\n"); 2316 return -errno; 2317 } 2318 mmaps[rd->mmap_idx] = rd->mmap_cur = buf; 2319 rd->mmap_idx = (rd->mmap_idx + 1) & (ARRAY_SIZE(rd->mmaps) - 1); 2320 rd->file_pos = rd->file_offset + rd->head; 2321 if (session->one_mmap) { 2322 session->one_mmap_addr = buf; 2323 session->one_mmap_offset = rd->file_offset; 2324 } 2325 2326 return 0; 2327 } 2328 2329 enum { 2330 READER_OK, 2331 READER_NODATA, 2332 }; 2333 2334 static int 2335 reader__read_event(struct reader *rd, struct perf_session *session, 2336 struct ui_progress *prog) 2337 { 2338 u64 size; 2339 int err = READER_OK; 2340 union perf_event *event; 2341 s64 skip; 2342 2343 event = fetch_mmaped_event(rd->head, rd->mmap_size, rd->mmap_cur, 2344 session->header.needs_swap); 2345 if (IS_ERR(event)) 2346 return PTR_ERR(event); 2347 2348 if (!event) 2349 return READER_NODATA; 2350 2351 size = event->header.size; 2352 2353 skip = -EINVAL; 2354 2355 if (size < sizeof(struct perf_event_header) || 2356 (skip = rd->process(session, event, rd->file_pos, rd->path)) < 0) { 2357 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d [%s]\n", 2358 rd->file_offset + rd->head, event->header.size, 2359 event->header.type, strerror(-skip)); 2360 err = skip; 2361 goto out; 2362 } 2363 2364 if (skip) 2365 size += skip; 2366 2367 rd->size += size; 2368 rd->head += size; 2369 rd->file_pos += size; 2370 2371 err = __perf_session__process_decomp_events(session); 2372 if (err) 2373 goto out; 2374 2375 ui_progress__update(prog, size); 2376 2377 out: 2378 return err; 2379 } 2380 2381 static inline bool 2382 reader__eof(struct reader *rd) 2383 { 2384 return (rd->file_pos >= rd->data_size + rd->data_offset); 2385 } 2386 2387 static int 2388 reader__process_events(struct reader *rd, struct perf_session *session, 2389 struct ui_progress *prog) 2390 { 2391 int err; 2392 2393 err = reader__init(rd, &session->one_mmap); 2394 if (err) 2395 goto out; 2396 2397 session->active_decomp = &rd->decomp_data; 2398 2399 remap: 2400 err = reader__mmap(rd, session); 2401 if (err) 2402 goto out; 2403 2404 more: 2405 err = reader__read_event(rd, session, prog); 2406 if (err < 0) 2407 goto out; 2408 else if (err == READER_NODATA) 2409 goto remap; 2410 2411 if (session_done()) 2412 goto out; 2413 2414 if (!reader__eof(rd)) 2415 goto more; 2416 2417 out: 2418 session->active_decomp = &session->decomp_data; 2419 return err; 2420 } 2421 2422 static s64 process_simple(struct perf_session *session, 2423 union perf_event *event, 2424 u64 file_offset, 2425 const char *file_path) 2426 { 2427 return perf_session__process_event(session, event, file_offset, file_path); 2428 } 2429 2430 static int __perf_session__process_events(struct perf_session *session) 2431 { 2432 struct reader rd = { 2433 .fd = perf_data__fd(session->data), 2434 .path = session->data->file.path, 2435 .data_size = session->header.data_size, 2436 .data_offset = session->header.data_offset, 2437 .process = process_simple, 2438 .in_place_update = session->data->in_place_update, 2439 }; 2440 struct ordered_events *oe = &session->ordered_events; 2441 struct perf_tool *tool = session->tool; 2442 struct ui_progress prog; 2443 int err; 2444 2445 perf_tool__fill_defaults(tool); 2446 2447 if (rd.data_size == 0) 2448 return -1; 2449 2450 ui_progress__init_size(&prog, rd.data_size, "Processing events..."); 2451 2452 err = reader__process_events(&rd, session, &prog); 2453 if (err) 2454 goto out_err; 2455 /* do the final flush for ordered samples */ 2456 err = ordered_events__flush(oe, OE_FLUSH__FINAL); 2457 if (err) 2458 goto out_err; 2459 err = auxtrace__flush_events(session, tool); 2460 if (err) 2461 goto out_err; 2462 err = perf_session__flush_thread_stacks(session); 2463 out_err: 2464 ui_progress__finish(); 2465 if (!tool->no_warn) 2466 perf_session__warn_about_errors(session); 2467 /* 2468 * We may switching perf.data output, make ordered_events 2469 * reusable. 2470 */ 2471 ordered_events__reinit(&session->ordered_events); 2472 auxtrace__free_events(session); 2473 reader__release_decomp(&rd); 2474 session->one_mmap = false; 2475 return err; 2476 } 2477 2478 /* 2479 * Processing 2 MB of data from each reader in sequence, 2480 * because that's the way the ordered events sorting works 2481 * most efficiently. 2482 */ 2483 #define READER_MAX_SIZE (2 * 1024 * 1024) 2484 2485 /* 2486 * This function reads, merge and process directory data. 2487 * It assumens the version 1 of directory data, where each 2488 * data file holds per-cpu data, already sorted by kernel. 2489 */ 2490 static int __perf_session__process_dir_events(struct perf_session *session) 2491 { 2492 struct perf_data *data = session->data; 2493 struct perf_tool *tool = session->tool; 2494 int i, ret, readers, nr_readers; 2495 struct ui_progress prog; 2496 u64 total_size = perf_data__size(session->data); 2497 struct reader *rd; 2498 2499 perf_tool__fill_defaults(tool); 2500 2501 ui_progress__init_size(&prog, total_size, "Sorting events..."); 2502 2503 nr_readers = 1; 2504 for (i = 0; i < data->dir.nr; i++) { 2505 if (data->dir.files[i].size) 2506 nr_readers++; 2507 } 2508 2509 rd = zalloc(nr_readers * sizeof(struct reader)); 2510 if (!rd) 2511 return -ENOMEM; 2512 2513 rd[0] = (struct reader) { 2514 .fd = perf_data__fd(session->data), 2515 .path = session->data->file.path, 2516 .data_size = session->header.data_size, 2517 .data_offset = session->header.data_offset, 2518 .process = process_simple, 2519 .in_place_update = session->data->in_place_update, 2520 }; 2521 ret = reader__init(&rd[0], NULL); 2522 if (ret) 2523 goto out_err; 2524 ret = reader__mmap(&rd[0], session); 2525 if (ret) 2526 goto out_err; 2527 readers = 1; 2528 2529 for (i = 0; i < data->dir.nr; i++) { 2530 if (!data->dir.files[i].size) 2531 continue; 2532 rd[readers] = (struct reader) { 2533 .fd = data->dir.files[i].fd, 2534 .path = data->dir.files[i].path, 2535 .data_size = data->dir.files[i].size, 2536 .data_offset = 0, 2537 .process = process_simple, 2538 .in_place_update = session->data->in_place_update, 2539 }; 2540 ret = reader__init(&rd[readers], NULL); 2541 if (ret) 2542 goto out_err; 2543 ret = reader__mmap(&rd[readers], session); 2544 if (ret) 2545 goto out_err; 2546 readers++; 2547 } 2548 2549 i = 0; 2550 while (readers) { 2551 if (session_done()) 2552 break; 2553 2554 if (rd[i].done) { 2555 i = (i + 1) % nr_readers; 2556 continue; 2557 } 2558 if (reader__eof(&rd[i])) { 2559 rd[i].done = true; 2560 readers--; 2561 continue; 2562 } 2563 2564 session->active_decomp = &rd[i].decomp_data; 2565 ret = reader__read_event(&rd[i], session, &prog); 2566 if (ret < 0) { 2567 goto out_err; 2568 } else if (ret == READER_NODATA) { 2569 ret = reader__mmap(&rd[i], session); 2570 if (ret) 2571 goto out_err; 2572 } 2573 2574 if (rd[i].size >= READER_MAX_SIZE) { 2575 rd[i].size = 0; 2576 i = (i + 1) % nr_readers; 2577 } 2578 } 2579 2580 ret = ordered_events__flush(&session->ordered_events, OE_FLUSH__FINAL); 2581 if (ret) 2582 goto out_err; 2583 2584 ret = perf_session__flush_thread_stacks(session); 2585 out_err: 2586 ui_progress__finish(); 2587 2588 if (!tool->no_warn) 2589 perf_session__warn_about_errors(session); 2590 2591 /* 2592 * We may switching perf.data output, make ordered_events 2593 * reusable. 2594 */ 2595 ordered_events__reinit(&session->ordered_events); 2596 2597 session->one_mmap = false; 2598 2599 session->active_decomp = &session->decomp_data; 2600 for (i = 0; i < nr_readers; i++) 2601 reader__release_decomp(&rd[i]); 2602 zfree(&rd); 2603 2604 return ret; 2605 } 2606 2607 int perf_session__process_events(struct perf_session *session) 2608 { 2609 if (perf_session__register_idle_thread(session) < 0) 2610 return -ENOMEM; 2611 2612 if (perf_data__is_pipe(session->data)) 2613 return __perf_session__process_pipe_events(session); 2614 2615 if (perf_data__is_dir(session->data) && session->data->dir.nr) 2616 return __perf_session__process_dir_events(session); 2617 2618 return __perf_session__process_events(session); 2619 } 2620 2621 bool perf_session__has_traces(struct perf_session *session, const char *msg) 2622 { 2623 struct evsel *evsel; 2624 2625 evlist__for_each_entry(session->evlist, evsel) { 2626 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) 2627 return true; 2628 } 2629 2630 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); 2631 return false; 2632 } 2633 2634 int map__set_kallsyms_ref_reloc_sym(struct map *map, const char *symbol_name, u64 addr) 2635 { 2636 char *bracket; 2637 struct ref_reloc_sym *ref; 2638 struct kmap *kmap; 2639 2640 ref = zalloc(sizeof(struct ref_reloc_sym)); 2641 if (ref == NULL) 2642 return -ENOMEM; 2643 2644 ref->name = strdup(symbol_name); 2645 if (ref->name == NULL) { 2646 free(ref); 2647 return -ENOMEM; 2648 } 2649 2650 bracket = strchr(ref->name, ']'); 2651 if (bracket) 2652 *bracket = '\0'; 2653 2654 ref->addr = addr; 2655 2656 kmap = map__kmap(map); 2657 if (kmap) 2658 kmap->ref_reloc_sym = ref; 2659 2660 return 0; 2661 } 2662 2663 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp) 2664 { 2665 return machines__fprintf_dsos(&session->machines, fp); 2666 } 2667 2668 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp, 2669 bool (skip)(struct dso *dso, int parm), int parm) 2670 { 2671 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm); 2672 } 2673 2674 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp, 2675 bool skip_empty) 2676 { 2677 size_t ret; 2678 const char *msg = ""; 2679 2680 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE)) 2681 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)"; 2682 2683 ret = fprintf(fp, "\nAggregated stats:%s\n", msg); 2684 2685 ret += events_stats__fprintf(&session->evlist->stats, fp, skip_empty); 2686 return ret; 2687 } 2688 2689 size_t perf_session__fprintf(struct perf_session *session, FILE *fp) 2690 { 2691 /* 2692 * FIXME: Here we have to actually print all the machines in this 2693 * session, not just the host... 2694 */ 2695 return machine__fprintf(&session->machines.host, fp); 2696 } 2697 2698 struct evsel *perf_session__find_first_evtype(struct perf_session *session, 2699 unsigned int type) 2700 { 2701 struct evsel *pos; 2702 2703 evlist__for_each_entry(session->evlist, pos) { 2704 if (pos->core.attr.type == type) 2705 return pos; 2706 } 2707 return NULL; 2708 } 2709 2710 int perf_session__cpu_bitmap(struct perf_session *session, 2711 const char *cpu_list, unsigned long *cpu_bitmap) 2712 { 2713 int i, err = -1; 2714 struct perf_cpu_map *map; 2715 int nr_cpus = min(session->header.env.nr_cpus_avail, MAX_NR_CPUS); 2716 2717 for (i = 0; i < PERF_TYPE_MAX; ++i) { 2718 struct evsel *evsel; 2719 2720 evsel = perf_session__find_first_evtype(session, i); 2721 if (!evsel) 2722 continue; 2723 2724 if (!(evsel->core.attr.sample_type & PERF_SAMPLE_CPU)) { 2725 pr_err("File does not contain CPU events. " 2726 "Remove -C option to proceed.\n"); 2727 return -1; 2728 } 2729 } 2730 2731 map = perf_cpu_map__new(cpu_list); 2732 if (map == NULL) { 2733 pr_err("Invalid cpu_list\n"); 2734 return -1; 2735 } 2736 2737 for (i = 0; i < perf_cpu_map__nr(map); i++) { 2738 struct perf_cpu cpu = perf_cpu_map__cpu(map, i); 2739 2740 if (cpu.cpu >= nr_cpus) { 2741 pr_err("Requested CPU %d too large. " 2742 "Consider raising MAX_NR_CPUS\n", cpu.cpu); 2743 goto out_delete_map; 2744 } 2745 2746 set_bit(cpu.cpu, cpu_bitmap); 2747 } 2748 2749 err = 0; 2750 2751 out_delete_map: 2752 perf_cpu_map__put(map); 2753 return err; 2754 } 2755 2756 void perf_session__fprintf_info(struct perf_session *session, FILE *fp, 2757 bool full) 2758 { 2759 if (session == NULL || fp == NULL) 2760 return; 2761 2762 fprintf(fp, "# ========\n"); 2763 perf_header__fprintf_info(session, fp, full); 2764 fprintf(fp, "# ========\n#\n"); 2765 } 2766 2767 static int perf_session__register_guest(struct perf_session *session, pid_t machine_pid) 2768 { 2769 struct machine *machine = machines__findnew(&session->machines, machine_pid); 2770 struct thread *thread; 2771 2772 if (!machine) 2773 return -ENOMEM; 2774 2775 machine->single_address_space = session->machines.host.single_address_space; 2776 2777 thread = machine__idle_thread(machine); 2778 if (!thread) 2779 return -ENOMEM; 2780 thread__put(thread); 2781 2782 machine->kallsyms_filename = perf_data__guest_kallsyms_name(session->data, machine_pid); 2783 2784 return 0; 2785 } 2786 2787 static int perf_session__set_guest_cpu(struct perf_session *session, pid_t pid, 2788 pid_t tid, int guest_cpu) 2789 { 2790 struct machine *machine = &session->machines.host; 2791 struct thread *thread = machine__findnew_thread(machine, pid, tid); 2792 2793 if (!thread) 2794 return -ENOMEM; 2795 thread->guest_cpu = guest_cpu; 2796 thread__put(thread); 2797 2798 return 0; 2799 } 2800 2801 int perf_event__process_id_index(struct perf_session *session, 2802 union perf_event *event) 2803 { 2804 struct evlist *evlist = session->evlist; 2805 struct perf_record_id_index *ie = &event->id_index; 2806 size_t sz = ie->header.size - sizeof(*ie); 2807 size_t i, nr, max_nr; 2808 size_t e1_sz = sizeof(struct id_index_entry); 2809 size_t e2_sz = sizeof(struct id_index_entry_2); 2810 size_t etot_sz = e1_sz + e2_sz; 2811 struct id_index_entry_2 *e2; 2812 pid_t last_pid = 0; 2813 2814 max_nr = sz / e1_sz; 2815 nr = ie->nr; 2816 if (nr > max_nr) { 2817 printf("Too big: nr %zu max_nr %zu\n", nr, max_nr); 2818 return -EINVAL; 2819 } 2820 2821 if (sz >= nr * etot_sz) { 2822 max_nr = sz / etot_sz; 2823 if (nr > max_nr) { 2824 printf("Too big2: nr %zu max_nr %zu\n", nr, max_nr); 2825 return -EINVAL; 2826 } 2827 e2 = (void *)ie + sizeof(*ie) + nr * e1_sz; 2828 } else { 2829 e2 = NULL; 2830 } 2831 2832 if (dump_trace) 2833 fprintf(stdout, " nr: %zu\n", nr); 2834 2835 for (i = 0; i < nr; i++, (e2 ? e2++ : 0)) { 2836 struct id_index_entry *e = &ie->entries[i]; 2837 struct perf_sample_id *sid; 2838 int ret; 2839 2840 if (dump_trace) { 2841 fprintf(stdout, " ... id: %"PRI_lu64, e->id); 2842 fprintf(stdout, " idx: %"PRI_lu64, e->idx); 2843 fprintf(stdout, " cpu: %"PRI_ld64, e->cpu); 2844 fprintf(stdout, " tid: %"PRI_ld64, e->tid); 2845 if (e2) { 2846 fprintf(stdout, " machine_pid: %"PRI_ld64, e2->machine_pid); 2847 fprintf(stdout, " vcpu: %"PRI_lu64"\n", e2->vcpu); 2848 } else { 2849 fprintf(stdout, "\n"); 2850 } 2851 } 2852 2853 sid = evlist__id2sid(evlist, e->id); 2854 if (!sid) 2855 return -ENOENT; 2856 2857 sid->idx = e->idx; 2858 sid->cpu.cpu = e->cpu; 2859 sid->tid = e->tid; 2860 2861 if (!e2) 2862 continue; 2863 2864 sid->machine_pid = e2->machine_pid; 2865 sid->vcpu.cpu = e2->vcpu; 2866 2867 if (!sid->machine_pid) 2868 continue; 2869 2870 if (sid->machine_pid != last_pid) { 2871 ret = perf_session__register_guest(session, sid->machine_pid); 2872 if (ret) 2873 return ret; 2874 last_pid = sid->machine_pid; 2875 perf_guest = true; 2876 } 2877 2878 ret = perf_session__set_guest_cpu(session, sid->machine_pid, e->tid, e2->vcpu); 2879 if (ret) 2880 return ret; 2881 } 2882 return 0; 2883 } 2884