1 // SPDX-License-Identifier: GPL-2.0 2 #include <errno.h> 3 #include <inttypes.h> 4 #include <linux/kernel.h> 5 #include <traceevent/event-parse.h> 6 #include <api/fs/fs.h> 7 8 #include <byteswap.h> 9 #include <unistd.h> 10 #include <sys/types.h> 11 #include <sys/mman.h> 12 13 #include "evlist.h" 14 #include "evsel.h" 15 #include "memswap.h" 16 #include "map.h" 17 #include "symbol.h" 18 #include "session.h" 19 #include "tool.h" 20 #include "sort.h" 21 #include "util.h" 22 #include "cpumap.h" 23 #include "perf_regs.h" 24 #include "asm/bug.h" 25 #include "auxtrace.h" 26 #include "thread.h" 27 #include "thread-stack.h" 28 #include "sample-raw.h" 29 #include "stat.h" 30 #include "arch/common.h" 31 32 static int perf_session__deliver_event(struct perf_session *session, 33 union perf_event *event, 34 struct perf_tool *tool, 35 u64 file_offset); 36 37 static int perf_session__open(struct perf_session *session) 38 { 39 struct perf_data *data = session->data; 40 41 if (perf_session__read_header(session) < 0) { 42 pr_err("incompatible file format (rerun with -v to learn more)\n"); 43 return -1; 44 } 45 46 if (perf_data__is_pipe(data)) 47 return 0; 48 49 if (perf_header__has_feat(&session->header, HEADER_STAT)) 50 return 0; 51 52 if (!perf_evlist__valid_sample_type(session->evlist)) { 53 pr_err("non matching sample_type\n"); 54 return -1; 55 } 56 57 if (!perf_evlist__valid_sample_id_all(session->evlist)) { 58 pr_err("non matching sample_id_all\n"); 59 return -1; 60 } 61 62 if (!perf_evlist__valid_read_format(session->evlist)) { 63 pr_err("non matching read_format\n"); 64 return -1; 65 } 66 67 return 0; 68 } 69 70 void perf_session__set_id_hdr_size(struct perf_session *session) 71 { 72 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist); 73 74 machines__set_id_hdr_size(&session->machines, id_hdr_size); 75 } 76 77 int perf_session__create_kernel_maps(struct perf_session *session) 78 { 79 int ret = machine__create_kernel_maps(&session->machines.host); 80 81 if (ret >= 0) 82 ret = machines__create_guest_kernel_maps(&session->machines); 83 return ret; 84 } 85 86 static void perf_session__destroy_kernel_maps(struct perf_session *session) 87 { 88 machines__destroy_kernel_maps(&session->machines); 89 } 90 91 static bool perf_session__has_comm_exec(struct perf_session *session) 92 { 93 struct perf_evsel *evsel; 94 95 evlist__for_each_entry(session->evlist, evsel) { 96 if (evsel->attr.comm_exec) 97 return true; 98 } 99 100 return false; 101 } 102 103 static void perf_session__set_comm_exec(struct perf_session *session) 104 { 105 bool comm_exec = perf_session__has_comm_exec(session); 106 107 machines__set_comm_exec(&session->machines, comm_exec); 108 } 109 110 static int ordered_events__deliver_event(struct ordered_events *oe, 111 struct ordered_event *event) 112 { 113 struct perf_session *session = container_of(oe, struct perf_session, 114 ordered_events); 115 116 return perf_session__deliver_event(session, event->event, 117 session->tool, event->file_offset); 118 } 119 120 struct perf_session *perf_session__new(struct perf_data *data, 121 bool repipe, struct perf_tool *tool) 122 { 123 struct perf_session *session = zalloc(sizeof(*session)); 124 125 if (!session) 126 goto out; 127 128 session->repipe = repipe; 129 session->tool = tool; 130 INIT_LIST_HEAD(&session->auxtrace_index); 131 machines__init(&session->machines); 132 ordered_events__init(&session->ordered_events, 133 ordered_events__deliver_event, NULL); 134 135 if (data) { 136 if (perf_data__open(data)) 137 goto out_delete; 138 139 session->data = data; 140 141 if (perf_data__is_read(data)) { 142 if (perf_session__open(session) < 0) 143 goto out_delete; 144 145 /* 146 * set session attributes that are present in perf.data 147 * but not in pipe-mode. 148 */ 149 if (!data->is_pipe) { 150 perf_session__set_id_hdr_size(session); 151 perf_session__set_comm_exec(session); 152 } 153 154 perf_evlist__init_trace_event_sample_raw(session->evlist); 155 156 /* Open the directory data. */ 157 if (data->is_dir && perf_data__open_dir(data)) 158 goto out_delete; 159 } 160 } else { 161 session->machines.host.env = &perf_env; 162 } 163 164 session->machines.host.single_address_space = 165 perf_env__single_address_space(session->machines.host.env); 166 167 if (!data || perf_data__is_write(data)) { 168 /* 169 * In O_RDONLY mode this will be performed when reading the 170 * kernel MMAP event, in perf_event__process_mmap(). 171 */ 172 if (perf_session__create_kernel_maps(session) < 0) 173 pr_warning("Cannot read kernel map\n"); 174 } 175 176 /* 177 * In pipe-mode, evlist is empty until PERF_RECORD_HEADER_ATTR is 178 * processed, so perf_evlist__sample_id_all is not meaningful here. 179 */ 180 if ((!data || !data->is_pipe) && tool && tool->ordering_requires_timestamps && 181 tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) { 182 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); 183 tool->ordered_events = false; 184 } 185 186 return session; 187 188 out_delete: 189 perf_session__delete(session); 190 out: 191 return NULL; 192 } 193 194 static void perf_session__delete_threads(struct perf_session *session) 195 { 196 machine__delete_threads(&session->machines.host); 197 } 198 199 void perf_session__delete(struct perf_session *session) 200 { 201 if (session == NULL) 202 return; 203 auxtrace__free(session); 204 auxtrace_index__free(&session->auxtrace_index); 205 perf_session__destroy_kernel_maps(session); 206 perf_session__delete_threads(session); 207 perf_env__exit(&session->header.env); 208 machines__exit(&session->machines); 209 if (session->data) 210 perf_data__close(session->data); 211 free(session); 212 } 213 214 static int process_event_synth_tracing_data_stub(struct perf_session *session 215 __maybe_unused, 216 union perf_event *event 217 __maybe_unused) 218 { 219 dump_printf(": unhandled!\n"); 220 return 0; 221 } 222 223 static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused, 224 union perf_event *event __maybe_unused, 225 struct perf_evlist **pevlist 226 __maybe_unused) 227 { 228 dump_printf(": unhandled!\n"); 229 return 0; 230 } 231 232 static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused, 233 union perf_event *event __maybe_unused, 234 struct perf_evlist **pevlist 235 __maybe_unused) 236 { 237 if (dump_trace) 238 perf_event__fprintf_event_update(event, stdout); 239 240 dump_printf(": unhandled!\n"); 241 return 0; 242 } 243 244 static int process_event_sample_stub(struct perf_tool *tool __maybe_unused, 245 union perf_event *event __maybe_unused, 246 struct perf_sample *sample __maybe_unused, 247 struct perf_evsel *evsel __maybe_unused, 248 struct machine *machine __maybe_unused) 249 { 250 dump_printf(": unhandled!\n"); 251 return 0; 252 } 253 254 static int process_event_stub(struct perf_tool *tool __maybe_unused, 255 union perf_event *event __maybe_unused, 256 struct perf_sample *sample __maybe_unused, 257 struct machine *machine __maybe_unused) 258 { 259 dump_printf(": unhandled!\n"); 260 return 0; 261 } 262 263 static int process_finished_round_stub(struct perf_tool *tool __maybe_unused, 264 union perf_event *event __maybe_unused, 265 struct ordered_events *oe __maybe_unused) 266 { 267 dump_printf(": unhandled!\n"); 268 return 0; 269 } 270 271 static int process_finished_round(struct perf_tool *tool, 272 union perf_event *event, 273 struct ordered_events *oe); 274 275 static int skipn(int fd, off_t n) 276 { 277 char buf[4096]; 278 ssize_t ret; 279 280 while (n > 0) { 281 ret = read(fd, buf, min(n, (off_t)sizeof(buf))); 282 if (ret <= 0) 283 return ret; 284 n -= ret; 285 } 286 287 return 0; 288 } 289 290 static s64 process_event_auxtrace_stub(struct perf_session *session __maybe_unused, 291 union perf_event *event) 292 { 293 dump_printf(": unhandled!\n"); 294 if (perf_data__is_pipe(session->data)) 295 skipn(perf_data__fd(session->data), event->auxtrace.size); 296 return event->auxtrace.size; 297 } 298 299 static int process_event_op2_stub(struct perf_session *session __maybe_unused, 300 union perf_event *event __maybe_unused) 301 { 302 dump_printf(": unhandled!\n"); 303 return 0; 304 } 305 306 307 static 308 int process_event_thread_map_stub(struct perf_session *session __maybe_unused, 309 union perf_event *event __maybe_unused) 310 { 311 if (dump_trace) 312 perf_event__fprintf_thread_map(event, stdout); 313 314 dump_printf(": unhandled!\n"); 315 return 0; 316 } 317 318 static 319 int process_event_cpu_map_stub(struct perf_session *session __maybe_unused, 320 union perf_event *event __maybe_unused) 321 { 322 if (dump_trace) 323 perf_event__fprintf_cpu_map(event, stdout); 324 325 dump_printf(": unhandled!\n"); 326 return 0; 327 } 328 329 static 330 int process_event_stat_config_stub(struct perf_session *session __maybe_unused, 331 union perf_event *event __maybe_unused) 332 { 333 if (dump_trace) 334 perf_event__fprintf_stat_config(event, stdout); 335 336 dump_printf(": unhandled!\n"); 337 return 0; 338 } 339 340 static int process_stat_stub(struct perf_session *perf_session __maybe_unused, 341 union perf_event *event) 342 { 343 if (dump_trace) 344 perf_event__fprintf_stat(event, stdout); 345 346 dump_printf(": unhandled!\n"); 347 return 0; 348 } 349 350 static int process_stat_round_stub(struct perf_session *perf_session __maybe_unused, 351 union perf_event *event) 352 { 353 if (dump_trace) 354 perf_event__fprintf_stat_round(event, stdout); 355 356 dump_printf(": unhandled!\n"); 357 return 0; 358 } 359 360 void perf_tool__fill_defaults(struct perf_tool *tool) 361 { 362 if (tool->sample == NULL) 363 tool->sample = process_event_sample_stub; 364 if (tool->mmap == NULL) 365 tool->mmap = process_event_stub; 366 if (tool->mmap2 == NULL) 367 tool->mmap2 = process_event_stub; 368 if (tool->comm == NULL) 369 tool->comm = process_event_stub; 370 if (tool->namespaces == NULL) 371 tool->namespaces = process_event_stub; 372 if (tool->fork == NULL) 373 tool->fork = process_event_stub; 374 if (tool->exit == NULL) 375 tool->exit = process_event_stub; 376 if (tool->lost == NULL) 377 tool->lost = perf_event__process_lost; 378 if (tool->lost_samples == NULL) 379 tool->lost_samples = perf_event__process_lost_samples; 380 if (tool->aux == NULL) 381 tool->aux = perf_event__process_aux; 382 if (tool->itrace_start == NULL) 383 tool->itrace_start = perf_event__process_itrace_start; 384 if (tool->context_switch == NULL) 385 tool->context_switch = perf_event__process_switch; 386 if (tool->ksymbol == NULL) 387 tool->ksymbol = perf_event__process_ksymbol; 388 if (tool->bpf_event == NULL) 389 tool->bpf_event = perf_event__process_bpf_event; 390 if (tool->read == NULL) 391 tool->read = process_event_sample_stub; 392 if (tool->throttle == NULL) 393 tool->throttle = process_event_stub; 394 if (tool->unthrottle == NULL) 395 tool->unthrottle = process_event_stub; 396 if (tool->attr == NULL) 397 tool->attr = process_event_synth_attr_stub; 398 if (tool->event_update == NULL) 399 tool->event_update = process_event_synth_event_update_stub; 400 if (tool->tracing_data == NULL) 401 tool->tracing_data = process_event_synth_tracing_data_stub; 402 if (tool->build_id == NULL) 403 tool->build_id = process_event_op2_stub; 404 if (tool->finished_round == NULL) { 405 if (tool->ordered_events) 406 tool->finished_round = process_finished_round; 407 else 408 tool->finished_round = process_finished_round_stub; 409 } 410 if (tool->id_index == NULL) 411 tool->id_index = process_event_op2_stub; 412 if (tool->auxtrace_info == NULL) 413 tool->auxtrace_info = process_event_op2_stub; 414 if (tool->auxtrace == NULL) 415 tool->auxtrace = process_event_auxtrace_stub; 416 if (tool->auxtrace_error == NULL) 417 tool->auxtrace_error = process_event_op2_stub; 418 if (tool->thread_map == NULL) 419 tool->thread_map = process_event_thread_map_stub; 420 if (tool->cpu_map == NULL) 421 tool->cpu_map = process_event_cpu_map_stub; 422 if (tool->stat_config == NULL) 423 tool->stat_config = process_event_stat_config_stub; 424 if (tool->stat == NULL) 425 tool->stat = process_stat_stub; 426 if (tool->stat_round == NULL) 427 tool->stat_round = process_stat_round_stub; 428 if (tool->time_conv == NULL) 429 tool->time_conv = process_event_op2_stub; 430 if (tool->feature == NULL) 431 tool->feature = process_event_op2_stub; 432 } 433 434 static void swap_sample_id_all(union perf_event *event, void *data) 435 { 436 void *end = (void *) event + event->header.size; 437 int size = end - data; 438 439 BUG_ON(size % sizeof(u64)); 440 mem_bswap_64(data, size); 441 } 442 443 static void perf_event__all64_swap(union perf_event *event, 444 bool sample_id_all __maybe_unused) 445 { 446 struct perf_event_header *hdr = &event->header; 447 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); 448 } 449 450 static void perf_event__comm_swap(union perf_event *event, bool sample_id_all) 451 { 452 event->comm.pid = bswap_32(event->comm.pid); 453 event->comm.tid = bswap_32(event->comm.tid); 454 455 if (sample_id_all) { 456 void *data = &event->comm.comm; 457 458 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 459 swap_sample_id_all(event, data); 460 } 461 } 462 463 static void perf_event__mmap_swap(union perf_event *event, 464 bool sample_id_all) 465 { 466 event->mmap.pid = bswap_32(event->mmap.pid); 467 event->mmap.tid = bswap_32(event->mmap.tid); 468 event->mmap.start = bswap_64(event->mmap.start); 469 event->mmap.len = bswap_64(event->mmap.len); 470 event->mmap.pgoff = bswap_64(event->mmap.pgoff); 471 472 if (sample_id_all) { 473 void *data = &event->mmap.filename; 474 475 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 476 swap_sample_id_all(event, data); 477 } 478 } 479 480 static void perf_event__mmap2_swap(union perf_event *event, 481 bool sample_id_all) 482 { 483 event->mmap2.pid = bswap_32(event->mmap2.pid); 484 event->mmap2.tid = bswap_32(event->mmap2.tid); 485 event->mmap2.start = bswap_64(event->mmap2.start); 486 event->mmap2.len = bswap_64(event->mmap2.len); 487 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff); 488 event->mmap2.maj = bswap_32(event->mmap2.maj); 489 event->mmap2.min = bswap_32(event->mmap2.min); 490 event->mmap2.ino = bswap_64(event->mmap2.ino); 491 492 if (sample_id_all) { 493 void *data = &event->mmap2.filename; 494 495 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 496 swap_sample_id_all(event, data); 497 } 498 } 499 static void perf_event__task_swap(union perf_event *event, bool sample_id_all) 500 { 501 event->fork.pid = bswap_32(event->fork.pid); 502 event->fork.tid = bswap_32(event->fork.tid); 503 event->fork.ppid = bswap_32(event->fork.ppid); 504 event->fork.ptid = bswap_32(event->fork.ptid); 505 event->fork.time = bswap_64(event->fork.time); 506 507 if (sample_id_all) 508 swap_sample_id_all(event, &event->fork + 1); 509 } 510 511 static void perf_event__read_swap(union perf_event *event, bool sample_id_all) 512 { 513 event->read.pid = bswap_32(event->read.pid); 514 event->read.tid = bswap_32(event->read.tid); 515 event->read.value = bswap_64(event->read.value); 516 event->read.time_enabled = bswap_64(event->read.time_enabled); 517 event->read.time_running = bswap_64(event->read.time_running); 518 event->read.id = bswap_64(event->read.id); 519 520 if (sample_id_all) 521 swap_sample_id_all(event, &event->read + 1); 522 } 523 524 static void perf_event__aux_swap(union perf_event *event, bool sample_id_all) 525 { 526 event->aux.aux_offset = bswap_64(event->aux.aux_offset); 527 event->aux.aux_size = bswap_64(event->aux.aux_size); 528 event->aux.flags = bswap_64(event->aux.flags); 529 530 if (sample_id_all) 531 swap_sample_id_all(event, &event->aux + 1); 532 } 533 534 static void perf_event__itrace_start_swap(union perf_event *event, 535 bool sample_id_all) 536 { 537 event->itrace_start.pid = bswap_32(event->itrace_start.pid); 538 event->itrace_start.tid = bswap_32(event->itrace_start.tid); 539 540 if (sample_id_all) 541 swap_sample_id_all(event, &event->itrace_start + 1); 542 } 543 544 static void perf_event__switch_swap(union perf_event *event, bool sample_id_all) 545 { 546 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) { 547 event->context_switch.next_prev_pid = 548 bswap_32(event->context_switch.next_prev_pid); 549 event->context_switch.next_prev_tid = 550 bswap_32(event->context_switch.next_prev_tid); 551 } 552 553 if (sample_id_all) 554 swap_sample_id_all(event, &event->context_switch + 1); 555 } 556 557 static void perf_event__throttle_swap(union perf_event *event, 558 bool sample_id_all) 559 { 560 event->throttle.time = bswap_64(event->throttle.time); 561 event->throttle.id = bswap_64(event->throttle.id); 562 event->throttle.stream_id = bswap_64(event->throttle.stream_id); 563 564 if (sample_id_all) 565 swap_sample_id_all(event, &event->throttle + 1); 566 } 567 568 static u8 revbyte(u8 b) 569 { 570 int rev = (b >> 4) | ((b & 0xf) << 4); 571 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2); 572 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1); 573 return (u8) rev; 574 } 575 576 /* 577 * XXX this is hack in attempt to carry flags bitfield 578 * through endian village. ABI says: 579 * 580 * Bit-fields are allocated from right to left (least to most significant) 581 * on little-endian implementations and from left to right (most to least 582 * significant) on big-endian implementations. 583 * 584 * The above seems to be byte specific, so we need to reverse each 585 * byte of the bitfield. 'Internet' also says this might be implementation 586 * specific and we probably need proper fix and carry perf_event_attr 587 * bitfield flags in separate data file FEAT_ section. Thought this seems 588 * to work for now. 589 */ 590 static void swap_bitfield(u8 *p, unsigned len) 591 { 592 unsigned i; 593 594 for (i = 0; i < len; i++) { 595 *p = revbyte(*p); 596 p++; 597 } 598 } 599 600 /* exported for swapping attributes in file header */ 601 void perf_event__attr_swap(struct perf_event_attr *attr) 602 { 603 attr->type = bswap_32(attr->type); 604 attr->size = bswap_32(attr->size); 605 606 #define bswap_safe(f, n) \ 607 (attr->size > (offsetof(struct perf_event_attr, f) + \ 608 sizeof(attr->f) * (n))) 609 #define bswap_field(f, sz) \ 610 do { \ 611 if (bswap_safe(f, 0)) \ 612 attr->f = bswap_##sz(attr->f); \ 613 } while(0) 614 #define bswap_field_16(f) bswap_field(f, 16) 615 #define bswap_field_32(f) bswap_field(f, 32) 616 #define bswap_field_64(f) bswap_field(f, 64) 617 618 bswap_field_64(config); 619 bswap_field_64(sample_period); 620 bswap_field_64(sample_type); 621 bswap_field_64(read_format); 622 bswap_field_32(wakeup_events); 623 bswap_field_32(bp_type); 624 bswap_field_64(bp_addr); 625 bswap_field_64(bp_len); 626 bswap_field_64(branch_sample_type); 627 bswap_field_64(sample_regs_user); 628 bswap_field_32(sample_stack_user); 629 bswap_field_32(aux_watermark); 630 bswap_field_16(sample_max_stack); 631 632 /* 633 * After read_format are bitfields. Check read_format because 634 * we are unable to use offsetof on bitfield. 635 */ 636 if (bswap_safe(read_format, 1)) 637 swap_bitfield((u8 *) (&attr->read_format + 1), 638 sizeof(u64)); 639 #undef bswap_field_64 640 #undef bswap_field_32 641 #undef bswap_field 642 #undef bswap_safe 643 } 644 645 static void perf_event__hdr_attr_swap(union perf_event *event, 646 bool sample_id_all __maybe_unused) 647 { 648 size_t size; 649 650 perf_event__attr_swap(&event->attr.attr); 651 652 size = event->header.size; 653 size -= (void *)&event->attr.id - (void *)event; 654 mem_bswap_64(event->attr.id, size); 655 } 656 657 static void perf_event__event_update_swap(union perf_event *event, 658 bool sample_id_all __maybe_unused) 659 { 660 event->event_update.type = bswap_64(event->event_update.type); 661 event->event_update.id = bswap_64(event->event_update.id); 662 } 663 664 static void perf_event__event_type_swap(union perf_event *event, 665 bool sample_id_all __maybe_unused) 666 { 667 event->event_type.event_type.event_id = 668 bswap_64(event->event_type.event_type.event_id); 669 } 670 671 static void perf_event__tracing_data_swap(union perf_event *event, 672 bool sample_id_all __maybe_unused) 673 { 674 event->tracing_data.size = bswap_32(event->tracing_data.size); 675 } 676 677 static void perf_event__auxtrace_info_swap(union perf_event *event, 678 bool sample_id_all __maybe_unused) 679 { 680 size_t size; 681 682 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type); 683 684 size = event->header.size; 685 size -= (void *)&event->auxtrace_info.priv - (void *)event; 686 mem_bswap_64(event->auxtrace_info.priv, size); 687 } 688 689 static void perf_event__auxtrace_swap(union perf_event *event, 690 bool sample_id_all __maybe_unused) 691 { 692 event->auxtrace.size = bswap_64(event->auxtrace.size); 693 event->auxtrace.offset = bswap_64(event->auxtrace.offset); 694 event->auxtrace.reference = bswap_64(event->auxtrace.reference); 695 event->auxtrace.idx = bswap_32(event->auxtrace.idx); 696 event->auxtrace.tid = bswap_32(event->auxtrace.tid); 697 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu); 698 } 699 700 static void perf_event__auxtrace_error_swap(union perf_event *event, 701 bool sample_id_all __maybe_unused) 702 { 703 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type); 704 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code); 705 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu); 706 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid); 707 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid); 708 event->auxtrace_error.fmt = bswap_32(event->auxtrace_error.fmt); 709 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip); 710 if (event->auxtrace_error.fmt) 711 event->auxtrace_error.time = bswap_64(event->auxtrace_error.time); 712 } 713 714 static void perf_event__thread_map_swap(union perf_event *event, 715 bool sample_id_all __maybe_unused) 716 { 717 unsigned i; 718 719 event->thread_map.nr = bswap_64(event->thread_map.nr); 720 721 for (i = 0; i < event->thread_map.nr; i++) 722 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid); 723 } 724 725 static void perf_event__cpu_map_swap(union perf_event *event, 726 bool sample_id_all __maybe_unused) 727 { 728 struct cpu_map_data *data = &event->cpu_map.data; 729 struct cpu_map_entries *cpus; 730 struct cpu_map_mask *mask; 731 unsigned i; 732 733 data->type = bswap_64(data->type); 734 735 switch (data->type) { 736 case PERF_CPU_MAP__CPUS: 737 cpus = (struct cpu_map_entries *)data->data; 738 739 cpus->nr = bswap_16(cpus->nr); 740 741 for (i = 0; i < cpus->nr; i++) 742 cpus->cpu[i] = bswap_16(cpus->cpu[i]); 743 break; 744 case PERF_CPU_MAP__MASK: 745 mask = (struct cpu_map_mask *) data->data; 746 747 mask->nr = bswap_16(mask->nr); 748 mask->long_size = bswap_16(mask->long_size); 749 750 switch (mask->long_size) { 751 case 4: mem_bswap_32(&mask->mask, mask->nr); break; 752 case 8: mem_bswap_64(&mask->mask, mask->nr); break; 753 default: 754 pr_err("cpu_map swap: unsupported long size\n"); 755 } 756 default: 757 break; 758 } 759 } 760 761 static void perf_event__stat_config_swap(union perf_event *event, 762 bool sample_id_all __maybe_unused) 763 { 764 u64 size; 765 766 size = event->stat_config.nr * sizeof(event->stat_config.data[0]); 767 size += 1; /* nr item itself */ 768 mem_bswap_64(&event->stat_config.nr, size); 769 } 770 771 static void perf_event__stat_swap(union perf_event *event, 772 bool sample_id_all __maybe_unused) 773 { 774 event->stat.id = bswap_64(event->stat.id); 775 event->stat.thread = bswap_32(event->stat.thread); 776 event->stat.cpu = bswap_32(event->stat.cpu); 777 event->stat.val = bswap_64(event->stat.val); 778 event->stat.ena = bswap_64(event->stat.ena); 779 event->stat.run = bswap_64(event->stat.run); 780 } 781 782 static void perf_event__stat_round_swap(union perf_event *event, 783 bool sample_id_all __maybe_unused) 784 { 785 event->stat_round.type = bswap_64(event->stat_round.type); 786 event->stat_round.time = bswap_64(event->stat_round.time); 787 } 788 789 typedef void (*perf_event__swap_op)(union perf_event *event, 790 bool sample_id_all); 791 792 static perf_event__swap_op perf_event__swap_ops[] = { 793 [PERF_RECORD_MMAP] = perf_event__mmap_swap, 794 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap, 795 [PERF_RECORD_COMM] = perf_event__comm_swap, 796 [PERF_RECORD_FORK] = perf_event__task_swap, 797 [PERF_RECORD_EXIT] = perf_event__task_swap, 798 [PERF_RECORD_LOST] = perf_event__all64_swap, 799 [PERF_RECORD_READ] = perf_event__read_swap, 800 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap, 801 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap, 802 [PERF_RECORD_SAMPLE] = perf_event__all64_swap, 803 [PERF_RECORD_AUX] = perf_event__aux_swap, 804 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap, 805 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap, 806 [PERF_RECORD_SWITCH] = perf_event__switch_swap, 807 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap, 808 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, 809 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, 810 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, 811 [PERF_RECORD_HEADER_BUILD_ID] = NULL, 812 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap, 813 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap, 814 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap, 815 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap, 816 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap, 817 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap, 818 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap, 819 [PERF_RECORD_STAT] = perf_event__stat_swap, 820 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap, 821 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap, 822 [PERF_RECORD_TIME_CONV] = perf_event__all64_swap, 823 [PERF_RECORD_HEADER_MAX] = NULL, 824 }; 825 826 /* 827 * When perf record finishes a pass on every buffers, it records this pseudo 828 * event. 829 * We record the max timestamp t found in the pass n. 830 * Assuming these timestamps are monotonic across cpus, we know that if 831 * a buffer still has events with timestamps below t, they will be all 832 * available and then read in the pass n + 1. 833 * Hence when we start to read the pass n + 2, we can safely flush every 834 * events with timestamps below t. 835 * 836 * ============ PASS n ================= 837 * CPU 0 | CPU 1 838 * | 839 * cnt1 timestamps | cnt2 timestamps 840 * 1 | 2 841 * 2 | 3 842 * - | 4 <--- max recorded 843 * 844 * ============ PASS n + 1 ============== 845 * CPU 0 | CPU 1 846 * | 847 * cnt1 timestamps | cnt2 timestamps 848 * 3 | 5 849 * 4 | 6 850 * 5 | 7 <---- max recorded 851 * 852 * Flush every events below timestamp 4 853 * 854 * ============ PASS n + 2 ============== 855 * CPU 0 | CPU 1 856 * | 857 * cnt1 timestamps | cnt2 timestamps 858 * 6 | 8 859 * 7 | 9 860 * - | 10 861 * 862 * Flush every events below timestamp 7 863 * etc... 864 */ 865 static int process_finished_round(struct perf_tool *tool __maybe_unused, 866 union perf_event *event __maybe_unused, 867 struct ordered_events *oe) 868 { 869 if (dump_trace) 870 fprintf(stdout, "\n"); 871 return ordered_events__flush(oe, OE_FLUSH__ROUND); 872 } 873 874 int perf_session__queue_event(struct perf_session *s, union perf_event *event, 875 u64 timestamp, u64 file_offset) 876 { 877 return ordered_events__queue(&s->ordered_events, event, timestamp, file_offset); 878 } 879 880 static void callchain__lbr_callstack_printf(struct perf_sample *sample) 881 { 882 struct ip_callchain *callchain = sample->callchain; 883 struct branch_stack *lbr_stack = sample->branch_stack; 884 u64 kernel_callchain_nr = callchain->nr; 885 unsigned int i; 886 887 for (i = 0; i < kernel_callchain_nr; i++) { 888 if (callchain->ips[i] == PERF_CONTEXT_USER) 889 break; 890 } 891 892 if ((i != kernel_callchain_nr) && lbr_stack->nr) { 893 u64 total_nr; 894 /* 895 * LBR callstack can only get user call chain, 896 * i is kernel call chain number, 897 * 1 is PERF_CONTEXT_USER. 898 * 899 * The user call chain is stored in LBR registers. 900 * LBR are pair registers. The caller is stored 901 * in "from" register, while the callee is stored 902 * in "to" register. 903 * For example, there is a call stack 904 * "A"->"B"->"C"->"D". 905 * The LBR registers will recorde like 906 * "C"->"D", "B"->"C", "A"->"B". 907 * So only the first "to" register and all "from" 908 * registers are needed to construct the whole stack. 909 */ 910 total_nr = i + 1 + lbr_stack->nr + 1; 911 kernel_callchain_nr = i + 1; 912 913 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr); 914 915 for (i = 0; i < kernel_callchain_nr; i++) 916 printf("..... %2d: %016" PRIx64 "\n", 917 i, callchain->ips[i]); 918 919 printf("..... %2d: %016" PRIx64 "\n", 920 (int)(kernel_callchain_nr), lbr_stack->entries[0].to); 921 for (i = 0; i < lbr_stack->nr; i++) 922 printf("..... %2d: %016" PRIx64 "\n", 923 (int)(i + kernel_callchain_nr + 1), lbr_stack->entries[i].from); 924 } 925 } 926 927 static void callchain__printf(struct perf_evsel *evsel, 928 struct perf_sample *sample) 929 { 930 unsigned int i; 931 struct ip_callchain *callchain = sample->callchain; 932 933 if (perf_evsel__has_branch_callstack(evsel)) 934 callchain__lbr_callstack_printf(sample); 935 936 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr); 937 938 for (i = 0; i < callchain->nr; i++) 939 printf("..... %2d: %016" PRIx64 "\n", 940 i, callchain->ips[i]); 941 } 942 943 static void branch_stack__printf(struct perf_sample *sample) 944 { 945 uint64_t i; 946 947 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr); 948 949 for (i = 0; i < sample->branch_stack->nr; i++) { 950 struct branch_entry *e = &sample->branch_stack->entries[i]; 951 952 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x\n", 953 i, e->from, e->to, 954 (unsigned short)e->flags.cycles, 955 e->flags.mispred ? "M" : " ", 956 e->flags.predicted ? "P" : " ", 957 e->flags.abort ? "A" : " ", 958 e->flags.in_tx ? "T" : " ", 959 (unsigned)e->flags.reserved); 960 } 961 } 962 963 static void regs_dump__printf(u64 mask, u64 *regs) 964 { 965 unsigned rid, i = 0; 966 967 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) { 968 u64 val = regs[i++]; 969 970 printf(".... %-5s 0x%" PRIx64 "\n", 971 perf_reg_name(rid), val); 972 } 973 } 974 975 static const char *regs_abi[] = { 976 [PERF_SAMPLE_REGS_ABI_NONE] = "none", 977 [PERF_SAMPLE_REGS_ABI_32] = "32-bit", 978 [PERF_SAMPLE_REGS_ABI_64] = "64-bit", 979 }; 980 981 static inline const char *regs_dump_abi(struct regs_dump *d) 982 { 983 if (d->abi > PERF_SAMPLE_REGS_ABI_64) 984 return "unknown"; 985 986 return regs_abi[d->abi]; 987 } 988 989 static void regs__printf(const char *type, struct regs_dump *regs) 990 { 991 u64 mask = regs->mask; 992 993 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n", 994 type, 995 mask, 996 regs_dump_abi(regs)); 997 998 regs_dump__printf(mask, regs->regs); 999 } 1000 1001 static void regs_user__printf(struct perf_sample *sample) 1002 { 1003 struct regs_dump *user_regs = &sample->user_regs; 1004 1005 if (user_regs->regs) 1006 regs__printf("user", user_regs); 1007 } 1008 1009 static void regs_intr__printf(struct perf_sample *sample) 1010 { 1011 struct regs_dump *intr_regs = &sample->intr_regs; 1012 1013 if (intr_regs->regs) 1014 regs__printf("intr", intr_regs); 1015 } 1016 1017 static void stack_user__printf(struct stack_dump *dump) 1018 { 1019 printf("... ustack: size %" PRIu64 ", offset 0x%x\n", 1020 dump->size, dump->offset); 1021 } 1022 1023 static void perf_evlist__print_tstamp(struct perf_evlist *evlist, 1024 union perf_event *event, 1025 struct perf_sample *sample) 1026 { 1027 u64 sample_type = __perf_evlist__combined_sample_type(evlist); 1028 1029 if (event->header.type != PERF_RECORD_SAMPLE && 1030 !perf_evlist__sample_id_all(evlist)) { 1031 fputs("-1 -1 ", stdout); 1032 return; 1033 } 1034 1035 if ((sample_type & PERF_SAMPLE_CPU)) 1036 printf("%u ", sample->cpu); 1037 1038 if (sample_type & PERF_SAMPLE_TIME) 1039 printf("%" PRIu64 " ", sample->time); 1040 } 1041 1042 static void sample_read__printf(struct perf_sample *sample, u64 read_format) 1043 { 1044 printf("... sample_read:\n"); 1045 1046 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 1047 printf("...... time enabled %016" PRIx64 "\n", 1048 sample->read.time_enabled); 1049 1050 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 1051 printf("...... time running %016" PRIx64 "\n", 1052 sample->read.time_running); 1053 1054 if (read_format & PERF_FORMAT_GROUP) { 1055 u64 i; 1056 1057 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr); 1058 1059 for (i = 0; i < sample->read.group.nr; i++) { 1060 struct sample_read_value *value; 1061 1062 value = &sample->read.group.values[i]; 1063 printf("..... id %016" PRIx64 1064 ", value %016" PRIx64 "\n", 1065 value->id, value->value); 1066 } 1067 } else 1068 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n", 1069 sample->read.one.id, sample->read.one.value); 1070 } 1071 1072 static void dump_event(struct perf_evlist *evlist, union perf_event *event, 1073 u64 file_offset, struct perf_sample *sample) 1074 { 1075 if (!dump_trace) 1076 return; 1077 1078 printf("\n%#" PRIx64 " [%#x]: event: %d\n", 1079 file_offset, event->header.size, event->header.type); 1080 1081 trace_event(event); 1082 if (event->header.type == PERF_RECORD_SAMPLE && evlist->trace_event_sample_raw) 1083 evlist->trace_event_sample_raw(evlist, event, sample); 1084 1085 if (sample) 1086 perf_evlist__print_tstamp(evlist, event, sample); 1087 1088 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, 1089 event->header.size, perf_event__name(event->header.type)); 1090 } 1091 1092 static void dump_sample(struct perf_evsel *evsel, union perf_event *event, 1093 struct perf_sample *sample) 1094 { 1095 u64 sample_type; 1096 1097 if (!dump_trace) 1098 return; 1099 1100 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", 1101 event->header.misc, sample->pid, sample->tid, sample->ip, 1102 sample->period, sample->addr); 1103 1104 sample_type = evsel->attr.sample_type; 1105 1106 if (evsel__has_callchain(evsel)) 1107 callchain__printf(evsel, sample); 1108 1109 if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !perf_evsel__has_branch_callstack(evsel)) 1110 branch_stack__printf(sample); 1111 1112 if (sample_type & PERF_SAMPLE_REGS_USER) 1113 regs_user__printf(sample); 1114 1115 if (sample_type & PERF_SAMPLE_REGS_INTR) 1116 regs_intr__printf(sample); 1117 1118 if (sample_type & PERF_SAMPLE_STACK_USER) 1119 stack_user__printf(&sample->user_stack); 1120 1121 if (sample_type & PERF_SAMPLE_WEIGHT) 1122 printf("... weight: %" PRIu64 "\n", sample->weight); 1123 1124 if (sample_type & PERF_SAMPLE_DATA_SRC) 1125 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src); 1126 1127 if (sample_type & PERF_SAMPLE_PHYS_ADDR) 1128 printf(" .. phys_addr: 0x%"PRIx64"\n", sample->phys_addr); 1129 1130 if (sample_type & PERF_SAMPLE_TRANSACTION) 1131 printf("... transaction: %" PRIx64 "\n", sample->transaction); 1132 1133 if (sample_type & PERF_SAMPLE_READ) 1134 sample_read__printf(sample, evsel->attr.read_format); 1135 } 1136 1137 static void dump_read(struct perf_evsel *evsel, union perf_event *event) 1138 { 1139 struct read_event *read_event = &event->read; 1140 u64 read_format; 1141 1142 if (!dump_trace) 1143 return; 1144 1145 printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid, 1146 evsel ? perf_evsel__name(evsel) : "FAIL", 1147 event->read.value); 1148 1149 read_format = evsel->attr.read_format; 1150 1151 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 1152 printf("... time enabled : %" PRIu64 "\n", read_event->time_enabled); 1153 1154 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 1155 printf("... time running : %" PRIu64 "\n", read_event->time_running); 1156 1157 if (read_format & PERF_FORMAT_ID) 1158 printf("... id : %" PRIu64 "\n", read_event->id); 1159 } 1160 1161 static struct machine *machines__find_for_cpumode(struct machines *machines, 1162 union perf_event *event, 1163 struct perf_sample *sample) 1164 { 1165 struct machine *machine; 1166 1167 if (perf_guest && 1168 ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || 1169 (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) { 1170 u32 pid; 1171 1172 if (event->header.type == PERF_RECORD_MMAP 1173 || event->header.type == PERF_RECORD_MMAP2) 1174 pid = event->mmap.pid; 1175 else 1176 pid = sample->pid; 1177 1178 machine = machines__find(machines, pid); 1179 if (!machine) 1180 machine = machines__findnew(machines, DEFAULT_GUEST_KERNEL_ID); 1181 return machine; 1182 } 1183 1184 return &machines->host; 1185 } 1186 1187 static int deliver_sample_value(struct perf_evlist *evlist, 1188 struct perf_tool *tool, 1189 union perf_event *event, 1190 struct perf_sample *sample, 1191 struct sample_read_value *v, 1192 struct machine *machine) 1193 { 1194 struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id); 1195 1196 if (sid) { 1197 sample->id = v->id; 1198 sample->period = v->value - sid->period; 1199 sid->period = v->value; 1200 } 1201 1202 if (!sid || sid->evsel == NULL) { 1203 ++evlist->stats.nr_unknown_id; 1204 return 0; 1205 } 1206 1207 /* 1208 * There's no reason to deliver sample 1209 * for zero period, bail out. 1210 */ 1211 if (!sample->period) 1212 return 0; 1213 1214 return tool->sample(tool, event, sample, sid->evsel, machine); 1215 } 1216 1217 static int deliver_sample_group(struct perf_evlist *evlist, 1218 struct perf_tool *tool, 1219 union perf_event *event, 1220 struct perf_sample *sample, 1221 struct machine *machine) 1222 { 1223 int ret = -EINVAL; 1224 u64 i; 1225 1226 for (i = 0; i < sample->read.group.nr; i++) { 1227 ret = deliver_sample_value(evlist, tool, event, sample, 1228 &sample->read.group.values[i], 1229 machine); 1230 if (ret) 1231 break; 1232 } 1233 1234 return ret; 1235 } 1236 1237 static int 1238 perf_evlist__deliver_sample(struct perf_evlist *evlist, 1239 struct perf_tool *tool, 1240 union perf_event *event, 1241 struct perf_sample *sample, 1242 struct perf_evsel *evsel, 1243 struct machine *machine) 1244 { 1245 /* We know evsel != NULL. */ 1246 u64 sample_type = evsel->attr.sample_type; 1247 u64 read_format = evsel->attr.read_format; 1248 1249 /* Standard sample delivery. */ 1250 if (!(sample_type & PERF_SAMPLE_READ)) 1251 return tool->sample(tool, event, sample, evsel, machine); 1252 1253 /* For PERF_SAMPLE_READ we have either single or group mode. */ 1254 if (read_format & PERF_FORMAT_GROUP) 1255 return deliver_sample_group(evlist, tool, event, sample, 1256 machine); 1257 else 1258 return deliver_sample_value(evlist, tool, event, sample, 1259 &sample->read.one, machine); 1260 } 1261 1262 static int machines__deliver_event(struct machines *machines, 1263 struct perf_evlist *evlist, 1264 union perf_event *event, 1265 struct perf_sample *sample, 1266 struct perf_tool *tool, u64 file_offset) 1267 { 1268 struct perf_evsel *evsel; 1269 struct machine *machine; 1270 1271 dump_event(evlist, event, file_offset, sample); 1272 1273 evsel = perf_evlist__id2evsel(evlist, sample->id); 1274 1275 machine = machines__find_for_cpumode(machines, event, sample); 1276 1277 switch (event->header.type) { 1278 case PERF_RECORD_SAMPLE: 1279 if (evsel == NULL) { 1280 ++evlist->stats.nr_unknown_id; 1281 return 0; 1282 } 1283 dump_sample(evsel, event, sample); 1284 if (machine == NULL) { 1285 ++evlist->stats.nr_unprocessable_samples; 1286 return 0; 1287 } 1288 return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine); 1289 case PERF_RECORD_MMAP: 1290 return tool->mmap(tool, event, sample, machine); 1291 case PERF_RECORD_MMAP2: 1292 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT) 1293 ++evlist->stats.nr_proc_map_timeout; 1294 return tool->mmap2(tool, event, sample, machine); 1295 case PERF_RECORD_COMM: 1296 return tool->comm(tool, event, sample, machine); 1297 case PERF_RECORD_NAMESPACES: 1298 return tool->namespaces(tool, event, sample, machine); 1299 case PERF_RECORD_FORK: 1300 return tool->fork(tool, event, sample, machine); 1301 case PERF_RECORD_EXIT: 1302 return tool->exit(tool, event, sample, machine); 1303 case PERF_RECORD_LOST: 1304 if (tool->lost == perf_event__process_lost) 1305 evlist->stats.total_lost += event->lost.lost; 1306 return tool->lost(tool, event, sample, machine); 1307 case PERF_RECORD_LOST_SAMPLES: 1308 if (tool->lost_samples == perf_event__process_lost_samples) 1309 evlist->stats.total_lost_samples += event->lost_samples.lost; 1310 return tool->lost_samples(tool, event, sample, machine); 1311 case PERF_RECORD_READ: 1312 dump_read(evsel, event); 1313 return tool->read(tool, event, sample, evsel, machine); 1314 case PERF_RECORD_THROTTLE: 1315 return tool->throttle(tool, event, sample, machine); 1316 case PERF_RECORD_UNTHROTTLE: 1317 return tool->unthrottle(tool, event, sample, machine); 1318 case PERF_RECORD_AUX: 1319 if (tool->aux == perf_event__process_aux) { 1320 if (event->aux.flags & PERF_AUX_FLAG_TRUNCATED) 1321 evlist->stats.total_aux_lost += 1; 1322 if (event->aux.flags & PERF_AUX_FLAG_PARTIAL) 1323 evlist->stats.total_aux_partial += 1; 1324 } 1325 return tool->aux(tool, event, sample, machine); 1326 case PERF_RECORD_ITRACE_START: 1327 return tool->itrace_start(tool, event, sample, machine); 1328 case PERF_RECORD_SWITCH: 1329 case PERF_RECORD_SWITCH_CPU_WIDE: 1330 return tool->context_switch(tool, event, sample, machine); 1331 case PERF_RECORD_KSYMBOL: 1332 return tool->ksymbol(tool, event, sample, machine); 1333 case PERF_RECORD_BPF_EVENT: 1334 return tool->bpf_event(tool, event, sample, machine); 1335 default: 1336 ++evlist->stats.nr_unknown_events; 1337 return -1; 1338 } 1339 } 1340 1341 static int perf_session__deliver_event(struct perf_session *session, 1342 union perf_event *event, 1343 struct perf_tool *tool, 1344 u64 file_offset) 1345 { 1346 struct perf_sample sample; 1347 int ret; 1348 1349 ret = perf_evlist__parse_sample(session->evlist, event, &sample); 1350 if (ret) { 1351 pr_err("Can't parse sample, err = %d\n", ret); 1352 return ret; 1353 } 1354 1355 ret = auxtrace__process_event(session, event, &sample, tool); 1356 if (ret < 0) 1357 return ret; 1358 if (ret > 0) 1359 return 0; 1360 1361 return machines__deliver_event(&session->machines, session->evlist, 1362 event, &sample, tool, file_offset); 1363 } 1364 1365 static s64 perf_session__process_user_event(struct perf_session *session, 1366 union perf_event *event, 1367 u64 file_offset) 1368 { 1369 struct ordered_events *oe = &session->ordered_events; 1370 struct perf_tool *tool = session->tool; 1371 struct perf_sample sample = { .time = 0, }; 1372 int fd = perf_data__fd(session->data); 1373 int err; 1374 1375 dump_event(session->evlist, event, file_offset, &sample); 1376 1377 /* These events are processed right away */ 1378 switch (event->header.type) { 1379 case PERF_RECORD_HEADER_ATTR: 1380 err = tool->attr(tool, event, &session->evlist); 1381 if (err == 0) { 1382 perf_session__set_id_hdr_size(session); 1383 perf_session__set_comm_exec(session); 1384 } 1385 return err; 1386 case PERF_RECORD_EVENT_UPDATE: 1387 return tool->event_update(tool, event, &session->evlist); 1388 case PERF_RECORD_HEADER_EVENT_TYPE: 1389 /* 1390 * Depreceated, but we need to handle it for sake 1391 * of old data files create in pipe mode. 1392 */ 1393 return 0; 1394 case PERF_RECORD_HEADER_TRACING_DATA: 1395 /* setup for reading amidst mmap */ 1396 lseek(fd, file_offset, SEEK_SET); 1397 return tool->tracing_data(session, event); 1398 case PERF_RECORD_HEADER_BUILD_ID: 1399 return tool->build_id(session, event); 1400 case PERF_RECORD_FINISHED_ROUND: 1401 return tool->finished_round(tool, event, oe); 1402 case PERF_RECORD_ID_INDEX: 1403 return tool->id_index(session, event); 1404 case PERF_RECORD_AUXTRACE_INFO: 1405 return tool->auxtrace_info(session, event); 1406 case PERF_RECORD_AUXTRACE: 1407 /* setup for reading amidst mmap */ 1408 lseek(fd, file_offset + event->header.size, SEEK_SET); 1409 return tool->auxtrace(session, event); 1410 case PERF_RECORD_AUXTRACE_ERROR: 1411 perf_session__auxtrace_error_inc(session, event); 1412 return tool->auxtrace_error(session, event); 1413 case PERF_RECORD_THREAD_MAP: 1414 return tool->thread_map(session, event); 1415 case PERF_RECORD_CPU_MAP: 1416 return tool->cpu_map(session, event); 1417 case PERF_RECORD_STAT_CONFIG: 1418 return tool->stat_config(session, event); 1419 case PERF_RECORD_STAT: 1420 return tool->stat(session, event); 1421 case PERF_RECORD_STAT_ROUND: 1422 return tool->stat_round(session, event); 1423 case PERF_RECORD_TIME_CONV: 1424 session->time_conv = event->time_conv; 1425 return tool->time_conv(session, event); 1426 case PERF_RECORD_HEADER_FEATURE: 1427 return tool->feature(session, event); 1428 default: 1429 return -EINVAL; 1430 } 1431 } 1432 1433 int perf_session__deliver_synth_event(struct perf_session *session, 1434 union perf_event *event, 1435 struct perf_sample *sample) 1436 { 1437 struct perf_evlist *evlist = session->evlist; 1438 struct perf_tool *tool = session->tool; 1439 1440 events_stats__inc(&evlist->stats, event->header.type); 1441 1442 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1443 return perf_session__process_user_event(session, event, 0); 1444 1445 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0); 1446 } 1447 1448 static void event_swap(union perf_event *event, bool sample_id_all) 1449 { 1450 perf_event__swap_op swap; 1451 1452 swap = perf_event__swap_ops[event->header.type]; 1453 if (swap) 1454 swap(event, sample_id_all); 1455 } 1456 1457 int perf_session__peek_event(struct perf_session *session, off_t file_offset, 1458 void *buf, size_t buf_sz, 1459 union perf_event **event_ptr, 1460 struct perf_sample *sample) 1461 { 1462 union perf_event *event; 1463 size_t hdr_sz, rest; 1464 int fd; 1465 1466 if (session->one_mmap && !session->header.needs_swap) { 1467 event = file_offset - session->one_mmap_offset + 1468 session->one_mmap_addr; 1469 goto out_parse_sample; 1470 } 1471 1472 if (perf_data__is_pipe(session->data)) 1473 return -1; 1474 1475 fd = perf_data__fd(session->data); 1476 hdr_sz = sizeof(struct perf_event_header); 1477 1478 if (buf_sz < hdr_sz) 1479 return -1; 1480 1481 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 || 1482 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz) 1483 return -1; 1484 1485 event = (union perf_event *)buf; 1486 1487 if (session->header.needs_swap) 1488 perf_event_header__bswap(&event->header); 1489 1490 if (event->header.size < hdr_sz || event->header.size > buf_sz) 1491 return -1; 1492 1493 rest = event->header.size - hdr_sz; 1494 1495 if (readn(fd, buf, rest) != (ssize_t)rest) 1496 return -1; 1497 1498 if (session->header.needs_swap) 1499 event_swap(event, perf_evlist__sample_id_all(session->evlist)); 1500 1501 out_parse_sample: 1502 1503 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START && 1504 perf_evlist__parse_sample(session->evlist, event, sample)) 1505 return -1; 1506 1507 *event_ptr = event; 1508 1509 return 0; 1510 } 1511 1512 static s64 perf_session__process_event(struct perf_session *session, 1513 union perf_event *event, u64 file_offset) 1514 { 1515 struct perf_evlist *evlist = session->evlist; 1516 struct perf_tool *tool = session->tool; 1517 int ret; 1518 1519 if (session->header.needs_swap) 1520 event_swap(event, perf_evlist__sample_id_all(evlist)); 1521 1522 if (event->header.type >= PERF_RECORD_HEADER_MAX) 1523 return -EINVAL; 1524 1525 events_stats__inc(&evlist->stats, event->header.type); 1526 1527 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1528 return perf_session__process_user_event(session, event, file_offset); 1529 1530 if (tool->ordered_events) { 1531 u64 timestamp = -1ULL; 1532 1533 ret = perf_evlist__parse_sample_timestamp(evlist, event, ×tamp); 1534 if (ret && ret != -1) 1535 return ret; 1536 1537 ret = perf_session__queue_event(session, event, timestamp, file_offset); 1538 if (ret != -ETIME) 1539 return ret; 1540 } 1541 1542 return perf_session__deliver_event(session, event, tool, file_offset); 1543 } 1544 1545 void perf_event_header__bswap(struct perf_event_header *hdr) 1546 { 1547 hdr->type = bswap_32(hdr->type); 1548 hdr->misc = bswap_16(hdr->misc); 1549 hdr->size = bswap_16(hdr->size); 1550 } 1551 1552 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) 1553 { 1554 return machine__findnew_thread(&session->machines.host, -1, pid); 1555 } 1556 1557 /* 1558 * Threads are identified by pid and tid, and the idle task has pid == tid == 0. 1559 * So here a single thread is created for that, but actually there is a separate 1560 * idle task per cpu, so there should be one 'struct thread' per cpu, but there 1561 * is only 1. That causes problems for some tools, requiring workarounds. For 1562 * example get_idle_thread() in builtin-sched.c, or thread_stack__per_cpu(). 1563 */ 1564 int perf_session__register_idle_thread(struct perf_session *session) 1565 { 1566 struct thread *thread; 1567 int err = 0; 1568 1569 thread = machine__findnew_thread(&session->machines.host, 0, 0); 1570 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) { 1571 pr_err("problem inserting idle task.\n"); 1572 err = -1; 1573 } 1574 1575 if (thread == NULL || thread__set_namespaces(thread, 0, NULL)) { 1576 pr_err("problem inserting idle task.\n"); 1577 err = -1; 1578 } 1579 1580 /* machine__findnew_thread() got the thread, so put it */ 1581 thread__put(thread); 1582 return err; 1583 } 1584 1585 static void 1586 perf_session__warn_order(const struct perf_session *session) 1587 { 1588 const struct ordered_events *oe = &session->ordered_events; 1589 struct perf_evsel *evsel; 1590 bool should_warn = true; 1591 1592 evlist__for_each_entry(session->evlist, evsel) { 1593 if (evsel->attr.write_backward) 1594 should_warn = false; 1595 } 1596 1597 if (!should_warn) 1598 return; 1599 if (oe->nr_unordered_events != 0) 1600 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events); 1601 } 1602 1603 static void perf_session__warn_about_errors(const struct perf_session *session) 1604 { 1605 const struct events_stats *stats = &session->evlist->stats; 1606 1607 if (session->tool->lost == perf_event__process_lost && 1608 stats->nr_events[PERF_RECORD_LOST] != 0) { 1609 ui__warning("Processed %d events and lost %d chunks!\n\n" 1610 "Check IO/CPU overload!\n\n", 1611 stats->nr_events[0], 1612 stats->nr_events[PERF_RECORD_LOST]); 1613 } 1614 1615 if (session->tool->lost_samples == perf_event__process_lost_samples) { 1616 double drop_rate; 1617 1618 drop_rate = (double)stats->total_lost_samples / 1619 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples); 1620 if (drop_rate > 0.05) { 1621 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%%!\n\n", 1622 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples, 1623 drop_rate * 100.0); 1624 } 1625 } 1626 1627 if (session->tool->aux == perf_event__process_aux && 1628 stats->total_aux_lost != 0) { 1629 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n", 1630 stats->total_aux_lost, 1631 stats->nr_events[PERF_RECORD_AUX]); 1632 } 1633 1634 if (session->tool->aux == perf_event__process_aux && 1635 stats->total_aux_partial != 0) { 1636 bool vmm_exclusive = false; 1637 1638 (void)sysfs__read_bool("module/kvm_intel/parameters/vmm_exclusive", 1639 &vmm_exclusive); 1640 1641 ui__warning("AUX data had gaps in it %" PRIu64 " times out of %u!\n\n" 1642 "Are you running a KVM guest in the background?%s\n\n", 1643 stats->total_aux_partial, 1644 stats->nr_events[PERF_RECORD_AUX], 1645 vmm_exclusive ? 1646 "\nReloading kvm_intel module with vmm_exclusive=0\n" 1647 "will reduce the gaps to only guest's timeslices." : 1648 ""); 1649 } 1650 1651 if (stats->nr_unknown_events != 0) { 1652 ui__warning("Found %u unknown events!\n\n" 1653 "Is this an older tool processing a perf.data " 1654 "file generated by a more recent tool?\n\n" 1655 "If that is not the case, consider " 1656 "reporting to linux-kernel@vger.kernel.org.\n\n", 1657 stats->nr_unknown_events); 1658 } 1659 1660 if (stats->nr_unknown_id != 0) { 1661 ui__warning("%u samples with id not present in the header\n", 1662 stats->nr_unknown_id); 1663 } 1664 1665 if (stats->nr_invalid_chains != 0) { 1666 ui__warning("Found invalid callchains!\n\n" 1667 "%u out of %u events were discarded for this reason.\n\n" 1668 "Consider reporting to linux-kernel@vger.kernel.org.\n\n", 1669 stats->nr_invalid_chains, 1670 stats->nr_events[PERF_RECORD_SAMPLE]); 1671 } 1672 1673 if (stats->nr_unprocessable_samples != 0) { 1674 ui__warning("%u unprocessable samples recorded.\n" 1675 "Do you have a KVM guest running and not using 'perf kvm'?\n", 1676 stats->nr_unprocessable_samples); 1677 } 1678 1679 perf_session__warn_order(session); 1680 1681 events_stats__auxtrace_error_warn(stats); 1682 1683 if (stats->nr_proc_map_timeout != 0) { 1684 ui__warning("%d map information files for pre-existing threads were\n" 1685 "not processed, if there are samples for addresses they\n" 1686 "will not be resolved, you may find out which are these\n" 1687 "threads by running with -v and redirecting the output\n" 1688 "to a file.\n" 1689 "The time limit to process proc map is too short?\n" 1690 "Increase it by --proc-map-timeout\n", 1691 stats->nr_proc_map_timeout); 1692 } 1693 } 1694 1695 static int perf_session__flush_thread_stack(struct thread *thread, 1696 void *p __maybe_unused) 1697 { 1698 return thread_stack__flush(thread); 1699 } 1700 1701 static int perf_session__flush_thread_stacks(struct perf_session *session) 1702 { 1703 return machines__for_each_thread(&session->machines, 1704 perf_session__flush_thread_stack, 1705 NULL); 1706 } 1707 1708 volatile int session_done; 1709 1710 static int __perf_session__process_pipe_events(struct perf_session *session) 1711 { 1712 struct ordered_events *oe = &session->ordered_events; 1713 struct perf_tool *tool = session->tool; 1714 int fd = perf_data__fd(session->data); 1715 union perf_event *event; 1716 uint32_t size, cur_size = 0; 1717 void *buf = NULL; 1718 s64 skip = 0; 1719 u64 head; 1720 ssize_t err; 1721 void *p; 1722 1723 perf_tool__fill_defaults(tool); 1724 1725 head = 0; 1726 cur_size = sizeof(union perf_event); 1727 1728 buf = malloc(cur_size); 1729 if (!buf) 1730 return -errno; 1731 ordered_events__set_copy_on_queue(oe, true); 1732 more: 1733 event = buf; 1734 err = readn(fd, event, sizeof(struct perf_event_header)); 1735 if (err <= 0) { 1736 if (err == 0) 1737 goto done; 1738 1739 pr_err("failed to read event header\n"); 1740 goto out_err; 1741 } 1742 1743 if (session->header.needs_swap) 1744 perf_event_header__bswap(&event->header); 1745 1746 size = event->header.size; 1747 if (size < sizeof(struct perf_event_header)) { 1748 pr_err("bad event header size\n"); 1749 goto out_err; 1750 } 1751 1752 if (size > cur_size) { 1753 void *new = realloc(buf, size); 1754 if (!new) { 1755 pr_err("failed to allocate memory to read event\n"); 1756 goto out_err; 1757 } 1758 buf = new; 1759 cur_size = size; 1760 event = buf; 1761 } 1762 p = event; 1763 p += sizeof(struct perf_event_header); 1764 1765 if (size - sizeof(struct perf_event_header)) { 1766 err = readn(fd, p, size - sizeof(struct perf_event_header)); 1767 if (err <= 0) { 1768 if (err == 0) { 1769 pr_err("unexpected end of event stream\n"); 1770 goto done; 1771 } 1772 1773 pr_err("failed to read event data\n"); 1774 goto out_err; 1775 } 1776 } 1777 1778 if ((skip = perf_session__process_event(session, event, head)) < 0) { 1779 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1780 head, event->header.size, event->header.type); 1781 err = -EINVAL; 1782 goto out_err; 1783 } 1784 1785 head += size; 1786 1787 if (skip > 0) 1788 head += skip; 1789 1790 if (!session_done()) 1791 goto more; 1792 done: 1793 /* do the final flush for ordered samples */ 1794 err = ordered_events__flush(oe, OE_FLUSH__FINAL); 1795 if (err) 1796 goto out_err; 1797 err = auxtrace__flush_events(session, tool); 1798 if (err) 1799 goto out_err; 1800 err = perf_session__flush_thread_stacks(session); 1801 out_err: 1802 free(buf); 1803 if (!tool->no_warn) 1804 perf_session__warn_about_errors(session); 1805 ordered_events__free(&session->ordered_events); 1806 auxtrace__free_events(session); 1807 return err; 1808 } 1809 1810 static union perf_event * 1811 fetch_mmaped_event(struct perf_session *session, 1812 u64 head, size_t mmap_size, char *buf) 1813 { 1814 union perf_event *event; 1815 1816 /* 1817 * Ensure we have enough space remaining to read 1818 * the size of the event in the headers. 1819 */ 1820 if (head + sizeof(event->header) > mmap_size) 1821 return NULL; 1822 1823 event = (union perf_event *)(buf + head); 1824 1825 if (session->header.needs_swap) 1826 perf_event_header__bswap(&event->header); 1827 1828 if (head + event->header.size > mmap_size) { 1829 /* We're not fetching the event so swap back again */ 1830 if (session->header.needs_swap) 1831 perf_event_header__bswap(&event->header); 1832 return NULL; 1833 } 1834 1835 return event; 1836 } 1837 1838 /* 1839 * On 64bit we can mmap the data file in one go. No need for tiny mmap 1840 * slices. On 32bit we use 32MB. 1841 */ 1842 #if BITS_PER_LONG == 64 1843 #define MMAP_SIZE ULLONG_MAX 1844 #define NUM_MMAPS 1 1845 #else 1846 #define MMAP_SIZE (32 * 1024 * 1024ULL) 1847 #define NUM_MMAPS 128 1848 #endif 1849 1850 struct reader; 1851 1852 typedef s64 (*reader_cb_t)(struct perf_session *session, 1853 union perf_event *event, 1854 u64 file_offset); 1855 1856 struct reader { 1857 int fd; 1858 u64 data_size; 1859 u64 data_offset; 1860 reader_cb_t process; 1861 }; 1862 1863 static int 1864 reader__process_events(struct reader *rd, struct perf_session *session, 1865 struct ui_progress *prog) 1866 { 1867 u64 data_size = rd->data_size; 1868 u64 head, page_offset, file_offset, file_pos, size; 1869 int err = 0, mmap_prot, mmap_flags, map_idx = 0; 1870 size_t mmap_size; 1871 char *buf, *mmaps[NUM_MMAPS]; 1872 union perf_event *event; 1873 s64 skip; 1874 1875 page_offset = page_size * (rd->data_offset / page_size); 1876 file_offset = page_offset; 1877 head = rd->data_offset - page_offset; 1878 1879 ui_progress__init_size(prog, data_size, "Processing events..."); 1880 1881 data_size += rd->data_offset; 1882 1883 mmap_size = MMAP_SIZE; 1884 if (mmap_size > data_size) { 1885 mmap_size = data_size; 1886 session->one_mmap = true; 1887 } 1888 1889 memset(mmaps, 0, sizeof(mmaps)); 1890 1891 mmap_prot = PROT_READ; 1892 mmap_flags = MAP_SHARED; 1893 1894 if (session->header.needs_swap) { 1895 mmap_prot |= PROT_WRITE; 1896 mmap_flags = MAP_PRIVATE; 1897 } 1898 remap: 1899 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, rd->fd, 1900 file_offset); 1901 if (buf == MAP_FAILED) { 1902 pr_err("failed to mmap file\n"); 1903 err = -errno; 1904 goto out; 1905 } 1906 mmaps[map_idx] = buf; 1907 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); 1908 file_pos = file_offset + head; 1909 if (session->one_mmap) { 1910 session->one_mmap_addr = buf; 1911 session->one_mmap_offset = file_offset; 1912 } 1913 1914 more: 1915 event = fetch_mmaped_event(session, head, mmap_size, buf); 1916 if (!event) { 1917 if (mmaps[map_idx]) { 1918 munmap(mmaps[map_idx], mmap_size); 1919 mmaps[map_idx] = NULL; 1920 } 1921 1922 page_offset = page_size * (head / page_size); 1923 file_offset += page_offset; 1924 head -= page_offset; 1925 goto remap; 1926 } 1927 1928 size = event->header.size; 1929 1930 if (size < sizeof(struct perf_event_header) || 1931 (skip = rd->process(session, event, file_pos)) < 0) { 1932 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1933 file_offset + head, event->header.size, 1934 event->header.type); 1935 err = -EINVAL; 1936 goto out; 1937 } 1938 1939 if (skip) 1940 size += skip; 1941 1942 head += size; 1943 file_pos += size; 1944 1945 ui_progress__update(prog, size); 1946 1947 if (session_done()) 1948 goto out; 1949 1950 if (file_pos < data_size) 1951 goto more; 1952 1953 out: 1954 return err; 1955 } 1956 1957 static s64 process_simple(struct perf_session *session, 1958 union perf_event *event, 1959 u64 file_offset) 1960 { 1961 return perf_session__process_event(session, event, file_offset); 1962 } 1963 1964 static int __perf_session__process_events(struct perf_session *session) 1965 { 1966 struct reader rd = { 1967 .fd = perf_data__fd(session->data), 1968 .data_size = session->header.data_size, 1969 .data_offset = session->header.data_offset, 1970 .process = process_simple, 1971 }; 1972 struct ordered_events *oe = &session->ordered_events; 1973 struct perf_tool *tool = session->tool; 1974 struct ui_progress prog; 1975 int err; 1976 1977 perf_tool__fill_defaults(tool); 1978 1979 if (rd.data_size == 0) 1980 return -1; 1981 1982 ui_progress__init_size(&prog, rd.data_size, "Processing events..."); 1983 1984 err = reader__process_events(&rd, session, &prog); 1985 if (err) 1986 goto out_err; 1987 /* do the final flush for ordered samples */ 1988 err = ordered_events__flush(oe, OE_FLUSH__FINAL); 1989 if (err) 1990 goto out_err; 1991 err = auxtrace__flush_events(session, tool); 1992 if (err) 1993 goto out_err; 1994 err = perf_session__flush_thread_stacks(session); 1995 out_err: 1996 ui_progress__finish(); 1997 if (!tool->no_warn) 1998 perf_session__warn_about_errors(session); 1999 /* 2000 * We may switching perf.data output, make ordered_events 2001 * reusable. 2002 */ 2003 ordered_events__reinit(&session->ordered_events); 2004 auxtrace__free_events(session); 2005 session->one_mmap = false; 2006 return err; 2007 } 2008 2009 int perf_session__process_events(struct perf_session *session) 2010 { 2011 if (perf_session__register_idle_thread(session) < 0) 2012 return -ENOMEM; 2013 2014 if (perf_data__is_pipe(session->data)) 2015 return __perf_session__process_pipe_events(session); 2016 2017 return __perf_session__process_events(session); 2018 } 2019 2020 bool perf_session__has_traces(struct perf_session *session, const char *msg) 2021 { 2022 struct perf_evsel *evsel; 2023 2024 evlist__for_each_entry(session->evlist, evsel) { 2025 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) 2026 return true; 2027 } 2028 2029 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); 2030 return false; 2031 } 2032 2033 int map__set_kallsyms_ref_reloc_sym(struct map *map, const char *symbol_name, u64 addr) 2034 { 2035 char *bracket; 2036 struct ref_reloc_sym *ref; 2037 struct kmap *kmap; 2038 2039 ref = zalloc(sizeof(struct ref_reloc_sym)); 2040 if (ref == NULL) 2041 return -ENOMEM; 2042 2043 ref->name = strdup(symbol_name); 2044 if (ref->name == NULL) { 2045 free(ref); 2046 return -ENOMEM; 2047 } 2048 2049 bracket = strchr(ref->name, ']'); 2050 if (bracket) 2051 *bracket = '\0'; 2052 2053 ref->addr = addr; 2054 2055 kmap = map__kmap(map); 2056 if (kmap) 2057 kmap->ref_reloc_sym = ref; 2058 2059 return 0; 2060 } 2061 2062 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp) 2063 { 2064 return machines__fprintf_dsos(&session->machines, fp); 2065 } 2066 2067 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp, 2068 bool (skip)(struct dso *dso, int parm), int parm) 2069 { 2070 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm); 2071 } 2072 2073 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) 2074 { 2075 size_t ret; 2076 const char *msg = ""; 2077 2078 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE)) 2079 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)"; 2080 2081 ret = fprintf(fp, "\nAggregated stats:%s\n", msg); 2082 2083 ret += events_stats__fprintf(&session->evlist->stats, fp); 2084 return ret; 2085 } 2086 2087 size_t perf_session__fprintf(struct perf_session *session, FILE *fp) 2088 { 2089 /* 2090 * FIXME: Here we have to actually print all the machines in this 2091 * session, not just the host... 2092 */ 2093 return machine__fprintf(&session->machines.host, fp); 2094 } 2095 2096 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, 2097 unsigned int type) 2098 { 2099 struct perf_evsel *pos; 2100 2101 evlist__for_each_entry(session->evlist, pos) { 2102 if (pos->attr.type == type) 2103 return pos; 2104 } 2105 return NULL; 2106 } 2107 2108 int perf_session__cpu_bitmap(struct perf_session *session, 2109 const char *cpu_list, unsigned long *cpu_bitmap) 2110 { 2111 int i, err = -1; 2112 struct cpu_map *map; 2113 2114 for (i = 0; i < PERF_TYPE_MAX; ++i) { 2115 struct perf_evsel *evsel; 2116 2117 evsel = perf_session__find_first_evtype(session, i); 2118 if (!evsel) 2119 continue; 2120 2121 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { 2122 pr_err("File does not contain CPU events. " 2123 "Remove -C option to proceed.\n"); 2124 return -1; 2125 } 2126 } 2127 2128 map = cpu_map__new(cpu_list); 2129 if (map == NULL) { 2130 pr_err("Invalid cpu_list\n"); 2131 return -1; 2132 } 2133 2134 for (i = 0; i < map->nr; i++) { 2135 int cpu = map->map[i]; 2136 2137 if (cpu >= MAX_NR_CPUS) { 2138 pr_err("Requested CPU %d too large. " 2139 "Consider raising MAX_NR_CPUS\n", cpu); 2140 goto out_delete_map; 2141 } 2142 2143 set_bit(cpu, cpu_bitmap); 2144 } 2145 2146 err = 0; 2147 2148 out_delete_map: 2149 cpu_map__put(map); 2150 return err; 2151 } 2152 2153 void perf_session__fprintf_info(struct perf_session *session, FILE *fp, 2154 bool full) 2155 { 2156 if (session == NULL || fp == NULL) 2157 return; 2158 2159 fprintf(fp, "# ========\n"); 2160 perf_header__fprintf_info(session, fp, full); 2161 fprintf(fp, "# ========\n#\n"); 2162 } 2163 2164 2165 int __perf_session__set_tracepoints_handlers(struct perf_session *session, 2166 const struct perf_evsel_str_handler *assocs, 2167 size_t nr_assocs) 2168 { 2169 struct perf_evsel *evsel; 2170 size_t i; 2171 int err; 2172 2173 for (i = 0; i < nr_assocs; i++) { 2174 /* 2175 * Adding a handler for an event not in the session, 2176 * just ignore it. 2177 */ 2178 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name); 2179 if (evsel == NULL) 2180 continue; 2181 2182 err = -EEXIST; 2183 if (evsel->handler != NULL) 2184 goto out; 2185 evsel->handler = assocs[i].handler; 2186 } 2187 2188 err = 0; 2189 out: 2190 return err; 2191 } 2192 2193 int perf_event__process_id_index(struct perf_session *session, 2194 union perf_event *event) 2195 { 2196 struct perf_evlist *evlist = session->evlist; 2197 struct id_index_event *ie = &event->id_index; 2198 size_t i, nr, max_nr; 2199 2200 max_nr = (ie->header.size - sizeof(struct id_index_event)) / 2201 sizeof(struct id_index_entry); 2202 nr = ie->nr; 2203 if (nr > max_nr) 2204 return -EINVAL; 2205 2206 if (dump_trace) 2207 fprintf(stdout, " nr: %zu\n", nr); 2208 2209 for (i = 0; i < nr; i++) { 2210 struct id_index_entry *e = &ie->entries[i]; 2211 struct perf_sample_id *sid; 2212 2213 if (dump_trace) { 2214 fprintf(stdout, " ... id: %"PRIu64, e->id); 2215 fprintf(stdout, " idx: %"PRIu64, e->idx); 2216 fprintf(stdout, " cpu: %"PRId64, e->cpu); 2217 fprintf(stdout, " tid: %"PRId64"\n", e->tid); 2218 } 2219 2220 sid = perf_evlist__id2sid(evlist, e->id); 2221 if (!sid) 2222 return -ENOENT; 2223 sid->idx = e->idx; 2224 sid->cpu = e->cpu; 2225 sid->tid = e->tid; 2226 } 2227 return 0; 2228 } 2229 2230 int perf_event__synthesize_id_index(struct perf_tool *tool, 2231 perf_event__handler_t process, 2232 struct perf_evlist *evlist, 2233 struct machine *machine) 2234 { 2235 union perf_event *ev; 2236 struct perf_evsel *evsel; 2237 size_t nr = 0, i = 0, sz, max_nr, n; 2238 int err; 2239 2240 pr_debug2("Synthesizing id index\n"); 2241 2242 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) / 2243 sizeof(struct id_index_entry); 2244 2245 evlist__for_each_entry(evlist, evsel) 2246 nr += evsel->ids; 2247 2248 n = nr > max_nr ? max_nr : nr; 2249 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry); 2250 ev = zalloc(sz); 2251 if (!ev) 2252 return -ENOMEM; 2253 2254 ev->id_index.header.type = PERF_RECORD_ID_INDEX; 2255 ev->id_index.header.size = sz; 2256 ev->id_index.nr = n; 2257 2258 evlist__for_each_entry(evlist, evsel) { 2259 u32 j; 2260 2261 for (j = 0; j < evsel->ids; j++) { 2262 struct id_index_entry *e; 2263 struct perf_sample_id *sid; 2264 2265 if (i >= n) { 2266 err = process(tool, ev, NULL, machine); 2267 if (err) 2268 goto out_err; 2269 nr -= n; 2270 i = 0; 2271 } 2272 2273 e = &ev->id_index.entries[i++]; 2274 2275 e->id = evsel->id[j]; 2276 2277 sid = perf_evlist__id2sid(evlist, e->id); 2278 if (!sid) { 2279 free(ev); 2280 return -ENOENT; 2281 } 2282 2283 e->idx = sid->idx; 2284 e->cpu = sid->cpu; 2285 e->tid = sid->tid; 2286 } 2287 } 2288 2289 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry); 2290 ev->id_index.header.size = sz; 2291 ev->id_index.nr = nr; 2292 2293 err = process(tool, ev, NULL, machine); 2294 out_err: 2295 free(ev); 2296 2297 return err; 2298 } 2299