1 #include <linux/kernel.h> 2 #include <traceevent/event-parse.h> 3 4 #include <byteswap.h> 5 #include <unistd.h> 6 #include <sys/types.h> 7 #include <sys/mman.h> 8 9 #include "evlist.h" 10 #include "evsel.h" 11 #include "session.h" 12 #include "tool.h" 13 #include "sort.h" 14 #include "util.h" 15 #include "cpumap.h" 16 #include "perf_regs.h" 17 #include "asm/bug.h" 18 19 static int perf_session__open(struct perf_session *session) 20 { 21 struct perf_data_file *file = session->file; 22 23 if (perf_session__read_header(session) < 0) { 24 pr_err("incompatible file format (rerun with -v to learn more)"); 25 return -1; 26 } 27 28 if (perf_data_file__is_pipe(file)) 29 return 0; 30 31 if (!perf_evlist__valid_sample_type(session->evlist)) { 32 pr_err("non matching sample_type"); 33 return -1; 34 } 35 36 if (!perf_evlist__valid_sample_id_all(session->evlist)) { 37 pr_err("non matching sample_id_all"); 38 return -1; 39 } 40 41 if (!perf_evlist__valid_read_format(session->evlist)) { 42 pr_err("non matching read_format"); 43 return -1; 44 } 45 46 return 0; 47 } 48 49 void perf_session__set_id_hdr_size(struct perf_session *session) 50 { 51 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist); 52 53 machines__set_id_hdr_size(&session->machines, id_hdr_size); 54 } 55 56 int perf_session__create_kernel_maps(struct perf_session *session) 57 { 58 int ret = machine__create_kernel_maps(&session->machines.host); 59 60 if (ret >= 0) 61 ret = machines__create_guest_kernel_maps(&session->machines); 62 return ret; 63 } 64 65 static void perf_session__destroy_kernel_maps(struct perf_session *session) 66 { 67 machines__destroy_kernel_maps(&session->machines); 68 } 69 70 static bool perf_session__has_comm_exec(struct perf_session *session) 71 { 72 struct perf_evsel *evsel; 73 74 evlist__for_each(session->evlist, evsel) { 75 if (evsel->attr.comm_exec) 76 return true; 77 } 78 79 return false; 80 } 81 82 static void perf_session__set_comm_exec(struct perf_session *session) 83 { 84 bool comm_exec = perf_session__has_comm_exec(session); 85 86 machines__set_comm_exec(&session->machines, comm_exec); 87 } 88 89 struct perf_session *perf_session__new(struct perf_data_file *file, 90 bool repipe, struct perf_tool *tool) 91 { 92 struct perf_session *session = zalloc(sizeof(*session)); 93 94 if (!session) 95 goto out; 96 97 session->repipe = repipe; 98 ordered_events__init(&session->ordered_events); 99 machines__init(&session->machines); 100 101 if (file) { 102 if (perf_data_file__open(file)) 103 goto out_delete; 104 105 session->file = file; 106 107 if (perf_data_file__is_read(file)) { 108 if (perf_session__open(session) < 0) 109 goto out_close; 110 111 perf_session__set_id_hdr_size(session); 112 perf_session__set_comm_exec(session); 113 } 114 } 115 116 if (!file || perf_data_file__is_write(file)) { 117 /* 118 * In O_RDONLY mode this will be performed when reading the 119 * kernel MMAP event, in perf_event__process_mmap(). 120 */ 121 if (perf_session__create_kernel_maps(session) < 0) 122 pr_warning("Cannot read kernel map\n"); 123 } 124 125 if (tool && tool->ordering_requires_timestamps && 126 tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) { 127 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); 128 tool->ordered_events = false; 129 } 130 131 return session; 132 133 out_close: 134 perf_data_file__close(file); 135 out_delete: 136 perf_session__delete(session); 137 out: 138 return NULL; 139 } 140 141 static void perf_session__delete_dead_threads(struct perf_session *session) 142 { 143 machine__delete_dead_threads(&session->machines.host); 144 } 145 146 static void perf_session__delete_threads(struct perf_session *session) 147 { 148 machine__delete_threads(&session->machines.host); 149 } 150 151 static void perf_session_env__delete(struct perf_session_env *env) 152 { 153 zfree(&env->hostname); 154 zfree(&env->os_release); 155 zfree(&env->version); 156 zfree(&env->arch); 157 zfree(&env->cpu_desc); 158 zfree(&env->cpuid); 159 160 zfree(&env->cmdline); 161 zfree(&env->sibling_cores); 162 zfree(&env->sibling_threads); 163 zfree(&env->numa_nodes); 164 zfree(&env->pmu_mappings); 165 } 166 167 void perf_session__delete(struct perf_session *session) 168 { 169 perf_session__destroy_kernel_maps(session); 170 perf_session__delete_dead_threads(session); 171 perf_session__delete_threads(session); 172 perf_session_env__delete(&session->header.env); 173 machines__exit(&session->machines); 174 if (session->file) 175 perf_data_file__close(session->file); 176 free(session); 177 } 178 179 static int process_event_synth_tracing_data_stub(struct perf_tool *tool 180 __maybe_unused, 181 union perf_event *event 182 __maybe_unused, 183 struct perf_session *session 184 __maybe_unused) 185 { 186 dump_printf(": unhandled!\n"); 187 return 0; 188 } 189 190 static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused, 191 union perf_event *event __maybe_unused, 192 struct perf_evlist **pevlist 193 __maybe_unused) 194 { 195 dump_printf(": unhandled!\n"); 196 return 0; 197 } 198 199 static int process_event_sample_stub(struct perf_tool *tool __maybe_unused, 200 union perf_event *event __maybe_unused, 201 struct perf_sample *sample __maybe_unused, 202 struct perf_evsel *evsel __maybe_unused, 203 struct machine *machine __maybe_unused) 204 { 205 dump_printf(": unhandled!\n"); 206 return 0; 207 } 208 209 static int process_event_stub(struct perf_tool *tool __maybe_unused, 210 union perf_event *event __maybe_unused, 211 struct perf_sample *sample __maybe_unused, 212 struct machine *machine __maybe_unused) 213 { 214 dump_printf(": unhandled!\n"); 215 return 0; 216 } 217 218 static int process_finished_round_stub(struct perf_tool *tool __maybe_unused, 219 union perf_event *event __maybe_unused, 220 struct perf_session *perf_session 221 __maybe_unused) 222 { 223 dump_printf(": unhandled!\n"); 224 return 0; 225 } 226 227 static int process_finished_round(struct perf_tool *tool, 228 union perf_event *event, 229 struct perf_session *session); 230 231 static int process_id_index_stub(struct perf_tool *tool __maybe_unused, 232 union perf_event *event __maybe_unused, 233 struct perf_session *perf_session 234 __maybe_unused) 235 { 236 dump_printf(": unhandled!\n"); 237 return 0; 238 } 239 240 void perf_tool__fill_defaults(struct perf_tool *tool) 241 { 242 if (tool->sample == NULL) 243 tool->sample = process_event_sample_stub; 244 if (tool->mmap == NULL) 245 tool->mmap = process_event_stub; 246 if (tool->mmap2 == NULL) 247 tool->mmap2 = process_event_stub; 248 if (tool->comm == NULL) 249 tool->comm = process_event_stub; 250 if (tool->fork == NULL) 251 tool->fork = process_event_stub; 252 if (tool->exit == NULL) 253 tool->exit = process_event_stub; 254 if (tool->lost == NULL) 255 tool->lost = perf_event__process_lost; 256 if (tool->read == NULL) 257 tool->read = process_event_sample_stub; 258 if (tool->throttle == NULL) 259 tool->throttle = process_event_stub; 260 if (tool->unthrottle == NULL) 261 tool->unthrottle = process_event_stub; 262 if (tool->attr == NULL) 263 tool->attr = process_event_synth_attr_stub; 264 if (tool->tracing_data == NULL) 265 tool->tracing_data = process_event_synth_tracing_data_stub; 266 if (tool->build_id == NULL) 267 tool->build_id = process_finished_round_stub; 268 if (tool->finished_round == NULL) { 269 if (tool->ordered_events) 270 tool->finished_round = process_finished_round; 271 else 272 tool->finished_round = process_finished_round_stub; 273 } 274 if (tool->id_index == NULL) 275 tool->id_index = process_id_index_stub; 276 } 277 278 static void swap_sample_id_all(union perf_event *event, void *data) 279 { 280 void *end = (void *) event + event->header.size; 281 int size = end - data; 282 283 BUG_ON(size % sizeof(u64)); 284 mem_bswap_64(data, size); 285 } 286 287 static void perf_event__all64_swap(union perf_event *event, 288 bool sample_id_all __maybe_unused) 289 { 290 struct perf_event_header *hdr = &event->header; 291 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); 292 } 293 294 static void perf_event__comm_swap(union perf_event *event, bool sample_id_all) 295 { 296 event->comm.pid = bswap_32(event->comm.pid); 297 event->comm.tid = bswap_32(event->comm.tid); 298 299 if (sample_id_all) { 300 void *data = &event->comm.comm; 301 302 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 303 swap_sample_id_all(event, data); 304 } 305 } 306 307 static void perf_event__mmap_swap(union perf_event *event, 308 bool sample_id_all) 309 { 310 event->mmap.pid = bswap_32(event->mmap.pid); 311 event->mmap.tid = bswap_32(event->mmap.tid); 312 event->mmap.start = bswap_64(event->mmap.start); 313 event->mmap.len = bswap_64(event->mmap.len); 314 event->mmap.pgoff = bswap_64(event->mmap.pgoff); 315 316 if (sample_id_all) { 317 void *data = &event->mmap.filename; 318 319 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 320 swap_sample_id_all(event, data); 321 } 322 } 323 324 static void perf_event__mmap2_swap(union perf_event *event, 325 bool sample_id_all) 326 { 327 event->mmap2.pid = bswap_32(event->mmap2.pid); 328 event->mmap2.tid = bswap_32(event->mmap2.tid); 329 event->mmap2.start = bswap_64(event->mmap2.start); 330 event->mmap2.len = bswap_64(event->mmap2.len); 331 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff); 332 event->mmap2.maj = bswap_32(event->mmap2.maj); 333 event->mmap2.min = bswap_32(event->mmap2.min); 334 event->mmap2.ino = bswap_64(event->mmap2.ino); 335 336 if (sample_id_all) { 337 void *data = &event->mmap2.filename; 338 339 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); 340 swap_sample_id_all(event, data); 341 } 342 } 343 static void perf_event__task_swap(union perf_event *event, bool sample_id_all) 344 { 345 event->fork.pid = bswap_32(event->fork.pid); 346 event->fork.tid = bswap_32(event->fork.tid); 347 event->fork.ppid = bswap_32(event->fork.ppid); 348 event->fork.ptid = bswap_32(event->fork.ptid); 349 event->fork.time = bswap_64(event->fork.time); 350 351 if (sample_id_all) 352 swap_sample_id_all(event, &event->fork + 1); 353 } 354 355 static void perf_event__read_swap(union perf_event *event, bool sample_id_all) 356 { 357 event->read.pid = bswap_32(event->read.pid); 358 event->read.tid = bswap_32(event->read.tid); 359 event->read.value = bswap_64(event->read.value); 360 event->read.time_enabled = bswap_64(event->read.time_enabled); 361 event->read.time_running = bswap_64(event->read.time_running); 362 event->read.id = bswap_64(event->read.id); 363 364 if (sample_id_all) 365 swap_sample_id_all(event, &event->read + 1); 366 } 367 368 static void perf_event__throttle_swap(union perf_event *event, 369 bool sample_id_all) 370 { 371 event->throttle.time = bswap_64(event->throttle.time); 372 event->throttle.id = bswap_64(event->throttle.id); 373 event->throttle.stream_id = bswap_64(event->throttle.stream_id); 374 375 if (sample_id_all) 376 swap_sample_id_all(event, &event->throttle + 1); 377 } 378 379 static u8 revbyte(u8 b) 380 { 381 int rev = (b >> 4) | ((b & 0xf) << 4); 382 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2); 383 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1); 384 return (u8) rev; 385 } 386 387 /* 388 * XXX this is hack in attempt to carry flags bitfield 389 * throught endian village. ABI says: 390 * 391 * Bit-fields are allocated from right to left (least to most significant) 392 * on little-endian implementations and from left to right (most to least 393 * significant) on big-endian implementations. 394 * 395 * The above seems to be byte specific, so we need to reverse each 396 * byte of the bitfield. 'Internet' also says this might be implementation 397 * specific and we probably need proper fix and carry perf_event_attr 398 * bitfield flags in separate data file FEAT_ section. Thought this seems 399 * to work for now. 400 */ 401 static void swap_bitfield(u8 *p, unsigned len) 402 { 403 unsigned i; 404 405 for (i = 0; i < len; i++) { 406 *p = revbyte(*p); 407 p++; 408 } 409 } 410 411 /* exported for swapping attributes in file header */ 412 void perf_event__attr_swap(struct perf_event_attr *attr) 413 { 414 attr->type = bswap_32(attr->type); 415 attr->size = bswap_32(attr->size); 416 attr->config = bswap_64(attr->config); 417 attr->sample_period = bswap_64(attr->sample_period); 418 attr->sample_type = bswap_64(attr->sample_type); 419 attr->read_format = bswap_64(attr->read_format); 420 attr->wakeup_events = bswap_32(attr->wakeup_events); 421 attr->bp_type = bswap_32(attr->bp_type); 422 attr->bp_addr = bswap_64(attr->bp_addr); 423 attr->bp_len = bswap_64(attr->bp_len); 424 attr->branch_sample_type = bswap_64(attr->branch_sample_type); 425 attr->sample_regs_user = bswap_64(attr->sample_regs_user); 426 attr->sample_stack_user = bswap_32(attr->sample_stack_user); 427 428 swap_bitfield((u8 *) (&attr->read_format + 1), sizeof(u64)); 429 } 430 431 static void perf_event__hdr_attr_swap(union perf_event *event, 432 bool sample_id_all __maybe_unused) 433 { 434 size_t size; 435 436 perf_event__attr_swap(&event->attr.attr); 437 438 size = event->header.size; 439 size -= (void *)&event->attr.id - (void *)event; 440 mem_bswap_64(event->attr.id, size); 441 } 442 443 static void perf_event__event_type_swap(union perf_event *event, 444 bool sample_id_all __maybe_unused) 445 { 446 event->event_type.event_type.event_id = 447 bswap_64(event->event_type.event_type.event_id); 448 } 449 450 static void perf_event__tracing_data_swap(union perf_event *event, 451 bool sample_id_all __maybe_unused) 452 { 453 event->tracing_data.size = bswap_32(event->tracing_data.size); 454 } 455 456 typedef void (*perf_event__swap_op)(union perf_event *event, 457 bool sample_id_all); 458 459 static perf_event__swap_op perf_event__swap_ops[] = { 460 [PERF_RECORD_MMAP] = perf_event__mmap_swap, 461 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap, 462 [PERF_RECORD_COMM] = perf_event__comm_swap, 463 [PERF_RECORD_FORK] = perf_event__task_swap, 464 [PERF_RECORD_EXIT] = perf_event__task_swap, 465 [PERF_RECORD_LOST] = perf_event__all64_swap, 466 [PERF_RECORD_READ] = perf_event__read_swap, 467 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap, 468 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap, 469 [PERF_RECORD_SAMPLE] = perf_event__all64_swap, 470 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, 471 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, 472 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, 473 [PERF_RECORD_HEADER_BUILD_ID] = NULL, 474 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap, 475 [PERF_RECORD_HEADER_MAX] = NULL, 476 }; 477 478 /* 479 * When perf record finishes a pass on every buffers, it records this pseudo 480 * event. 481 * We record the max timestamp t found in the pass n. 482 * Assuming these timestamps are monotonic across cpus, we know that if 483 * a buffer still has events with timestamps below t, they will be all 484 * available and then read in the pass n + 1. 485 * Hence when we start to read the pass n + 2, we can safely flush every 486 * events with timestamps below t. 487 * 488 * ============ PASS n ================= 489 * CPU 0 | CPU 1 490 * | 491 * cnt1 timestamps | cnt2 timestamps 492 * 1 | 2 493 * 2 | 3 494 * - | 4 <--- max recorded 495 * 496 * ============ PASS n + 1 ============== 497 * CPU 0 | CPU 1 498 * | 499 * cnt1 timestamps | cnt2 timestamps 500 * 3 | 5 501 * 4 | 6 502 * 5 | 7 <---- max recorded 503 * 504 * Flush every events below timestamp 4 505 * 506 * ============ PASS n + 2 ============== 507 * CPU 0 | CPU 1 508 * | 509 * cnt1 timestamps | cnt2 timestamps 510 * 6 | 8 511 * 7 | 9 512 * - | 10 513 * 514 * Flush every events below timestamp 7 515 * etc... 516 */ 517 static int process_finished_round(struct perf_tool *tool, 518 union perf_event *event __maybe_unused, 519 struct perf_session *session) 520 { 521 return ordered_events__flush(session, tool, OE_FLUSH__ROUND); 522 } 523 524 int perf_session_queue_event(struct perf_session *s, union perf_event *event, 525 struct perf_tool *tool, struct perf_sample *sample, 526 u64 file_offset) 527 { 528 struct ordered_events *oe = &s->ordered_events; 529 u64 timestamp = sample->time; 530 struct ordered_event *new; 531 532 if (!timestamp || timestamp == ~0ULL) 533 return -ETIME; 534 535 if (timestamp < oe->last_flush) { 536 WARN_ONCE(1, "Timestamp below last timeslice flush\n"); 537 538 pr_oe_time(timestamp, "out of order event"); 539 pr_oe_time(oe->last_flush, "last flush, last_flush_type %d\n", 540 oe->last_flush_type); 541 542 /* We could get out of order messages after forced flush. */ 543 if (oe->last_flush_type != OE_FLUSH__HALF) 544 return -EINVAL; 545 } 546 547 new = ordered_events__new(oe, timestamp, event); 548 if (!new) { 549 ordered_events__flush(s, tool, OE_FLUSH__HALF); 550 new = ordered_events__new(oe, timestamp, event); 551 } 552 553 if (!new) 554 return -ENOMEM; 555 556 new->file_offset = file_offset; 557 return 0; 558 } 559 560 static void callchain__printf(struct perf_sample *sample) 561 { 562 unsigned int i; 563 564 printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr); 565 566 for (i = 0; i < sample->callchain->nr; i++) 567 printf("..... %2d: %016" PRIx64 "\n", 568 i, sample->callchain->ips[i]); 569 } 570 571 static void branch_stack__printf(struct perf_sample *sample) 572 { 573 uint64_t i; 574 575 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr); 576 577 for (i = 0; i < sample->branch_stack->nr; i++) 578 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 "\n", 579 i, sample->branch_stack->entries[i].from, 580 sample->branch_stack->entries[i].to); 581 } 582 583 static void regs_dump__printf(u64 mask, u64 *regs) 584 { 585 unsigned rid, i = 0; 586 587 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) { 588 u64 val = regs[i++]; 589 590 printf(".... %-5s 0x%" PRIx64 "\n", 591 perf_reg_name(rid), val); 592 } 593 } 594 595 static void regs_user__printf(struct perf_sample *sample) 596 { 597 struct regs_dump *user_regs = &sample->user_regs; 598 599 if (user_regs->regs) { 600 u64 mask = user_regs->mask; 601 printf("... user regs: mask 0x%" PRIx64 "\n", mask); 602 regs_dump__printf(mask, user_regs->regs); 603 } 604 } 605 606 static void stack_user__printf(struct stack_dump *dump) 607 { 608 printf("... ustack: size %" PRIu64 ", offset 0x%x\n", 609 dump->size, dump->offset); 610 } 611 612 static void perf_session__print_tstamp(struct perf_session *session, 613 union perf_event *event, 614 struct perf_sample *sample) 615 { 616 u64 sample_type = __perf_evlist__combined_sample_type(session->evlist); 617 618 if (event->header.type != PERF_RECORD_SAMPLE && 619 !perf_evlist__sample_id_all(session->evlist)) { 620 fputs("-1 -1 ", stdout); 621 return; 622 } 623 624 if ((sample_type & PERF_SAMPLE_CPU)) 625 printf("%u ", sample->cpu); 626 627 if (sample_type & PERF_SAMPLE_TIME) 628 printf("%" PRIu64 " ", sample->time); 629 } 630 631 static void sample_read__printf(struct perf_sample *sample, u64 read_format) 632 { 633 printf("... sample_read:\n"); 634 635 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 636 printf("...... time enabled %016" PRIx64 "\n", 637 sample->read.time_enabled); 638 639 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 640 printf("...... time running %016" PRIx64 "\n", 641 sample->read.time_running); 642 643 if (read_format & PERF_FORMAT_GROUP) { 644 u64 i; 645 646 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr); 647 648 for (i = 0; i < sample->read.group.nr; i++) { 649 struct sample_read_value *value; 650 651 value = &sample->read.group.values[i]; 652 printf("..... id %016" PRIx64 653 ", value %016" PRIx64 "\n", 654 value->id, value->value); 655 } 656 } else 657 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n", 658 sample->read.one.id, sample->read.one.value); 659 } 660 661 static void dump_event(struct perf_session *session, union perf_event *event, 662 u64 file_offset, struct perf_sample *sample) 663 { 664 if (!dump_trace) 665 return; 666 667 printf("\n%#" PRIx64 " [%#x]: event: %d\n", 668 file_offset, event->header.size, event->header.type); 669 670 trace_event(event); 671 672 if (sample) 673 perf_session__print_tstamp(session, event, sample); 674 675 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, 676 event->header.size, perf_event__name(event->header.type)); 677 } 678 679 static void dump_sample(struct perf_evsel *evsel, union perf_event *event, 680 struct perf_sample *sample) 681 { 682 u64 sample_type; 683 684 if (!dump_trace) 685 return; 686 687 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", 688 event->header.misc, sample->pid, sample->tid, sample->ip, 689 sample->period, sample->addr); 690 691 sample_type = evsel->attr.sample_type; 692 693 if (sample_type & PERF_SAMPLE_CALLCHAIN) 694 callchain__printf(sample); 695 696 if (sample_type & PERF_SAMPLE_BRANCH_STACK) 697 branch_stack__printf(sample); 698 699 if (sample_type & PERF_SAMPLE_REGS_USER) 700 regs_user__printf(sample); 701 702 if (sample_type & PERF_SAMPLE_STACK_USER) 703 stack_user__printf(&sample->user_stack); 704 705 if (sample_type & PERF_SAMPLE_WEIGHT) 706 printf("... weight: %" PRIu64 "\n", sample->weight); 707 708 if (sample_type & PERF_SAMPLE_DATA_SRC) 709 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src); 710 711 if (sample_type & PERF_SAMPLE_TRANSACTION) 712 printf("... transaction: %" PRIx64 "\n", sample->transaction); 713 714 if (sample_type & PERF_SAMPLE_READ) 715 sample_read__printf(sample, evsel->attr.read_format); 716 } 717 718 static struct machine * 719 perf_session__find_machine_for_cpumode(struct perf_session *session, 720 union perf_event *event, 721 struct perf_sample *sample) 722 { 723 const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; 724 struct machine *machine; 725 726 if (perf_guest && 727 ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || 728 (cpumode == PERF_RECORD_MISC_GUEST_USER))) { 729 u32 pid; 730 731 if (event->header.type == PERF_RECORD_MMAP 732 || event->header.type == PERF_RECORD_MMAP2) 733 pid = event->mmap.pid; 734 else 735 pid = sample->pid; 736 737 machine = perf_session__find_machine(session, pid); 738 if (!machine) 739 machine = perf_session__findnew_machine(session, 740 DEFAULT_GUEST_KERNEL_ID); 741 return machine; 742 } 743 744 return &session->machines.host; 745 } 746 747 static int deliver_sample_value(struct perf_session *session, 748 struct perf_tool *tool, 749 union perf_event *event, 750 struct perf_sample *sample, 751 struct sample_read_value *v, 752 struct machine *machine) 753 { 754 struct perf_sample_id *sid; 755 756 sid = perf_evlist__id2sid(session->evlist, v->id); 757 if (sid) { 758 sample->id = v->id; 759 sample->period = v->value - sid->period; 760 sid->period = v->value; 761 } 762 763 if (!sid || sid->evsel == NULL) { 764 ++session->stats.nr_unknown_id; 765 return 0; 766 } 767 768 return tool->sample(tool, event, sample, sid->evsel, machine); 769 } 770 771 static int deliver_sample_group(struct perf_session *session, 772 struct perf_tool *tool, 773 union perf_event *event, 774 struct perf_sample *sample, 775 struct machine *machine) 776 { 777 int ret = -EINVAL; 778 u64 i; 779 780 for (i = 0; i < sample->read.group.nr; i++) { 781 ret = deliver_sample_value(session, tool, event, sample, 782 &sample->read.group.values[i], 783 machine); 784 if (ret) 785 break; 786 } 787 788 return ret; 789 } 790 791 static int 792 perf_session__deliver_sample(struct perf_session *session, 793 struct perf_tool *tool, 794 union perf_event *event, 795 struct perf_sample *sample, 796 struct perf_evsel *evsel, 797 struct machine *machine) 798 { 799 /* We know evsel != NULL. */ 800 u64 sample_type = evsel->attr.sample_type; 801 u64 read_format = evsel->attr.read_format; 802 803 /* Standard sample delievery. */ 804 if (!(sample_type & PERF_SAMPLE_READ)) 805 return tool->sample(tool, event, sample, evsel, machine); 806 807 /* For PERF_SAMPLE_READ we have either single or group mode. */ 808 if (read_format & PERF_FORMAT_GROUP) 809 return deliver_sample_group(session, tool, event, sample, 810 machine); 811 else 812 return deliver_sample_value(session, tool, event, sample, 813 &sample->read.one, machine); 814 } 815 816 int perf_session__deliver_event(struct perf_session *session, 817 union perf_event *event, 818 struct perf_sample *sample, 819 struct perf_tool *tool, u64 file_offset) 820 { 821 struct perf_evsel *evsel; 822 struct machine *machine; 823 824 dump_event(session, event, file_offset, sample); 825 826 evsel = perf_evlist__id2evsel(session->evlist, sample->id); 827 828 machine = perf_session__find_machine_for_cpumode(session, event, 829 sample); 830 831 switch (event->header.type) { 832 case PERF_RECORD_SAMPLE: 833 dump_sample(evsel, event, sample); 834 if (evsel == NULL) { 835 ++session->stats.nr_unknown_id; 836 return 0; 837 } 838 if (machine == NULL) { 839 ++session->stats.nr_unprocessable_samples; 840 return 0; 841 } 842 return perf_session__deliver_sample(session, tool, event, 843 sample, evsel, machine); 844 case PERF_RECORD_MMAP: 845 return tool->mmap(tool, event, sample, machine); 846 case PERF_RECORD_MMAP2: 847 return tool->mmap2(tool, event, sample, machine); 848 case PERF_RECORD_COMM: 849 return tool->comm(tool, event, sample, machine); 850 case PERF_RECORD_FORK: 851 return tool->fork(tool, event, sample, machine); 852 case PERF_RECORD_EXIT: 853 return tool->exit(tool, event, sample, machine); 854 case PERF_RECORD_LOST: 855 if (tool->lost == perf_event__process_lost) 856 session->stats.total_lost += event->lost.lost; 857 return tool->lost(tool, event, sample, machine); 858 case PERF_RECORD_READ: 859 return tool->read(tool, event, sample, evsel, machine); 860 case PERF_RECORD_THROTTLE: 861 return tool->throttle(tool, event, sample, machine); 862 case PERF_RECORD_UNTHROTTLE: 863 return tool->unthrottle(tool, event, sample, machine); 864 default: 865 ++session->stats.nr_unknown_events; 866 return -1; 867 } 868 } 869 870 static s64 perf_session__process_user_event(struct perf_session *session, 871 union perf_event *event, 872 struct perf_tool *tool, 873 u64 file_offset) 874 { 875 int fd = perf_data_file__fd(session->file); 876 int err; 877 878 dump_event(session, event, file_offset, NULL); 879 880 /* These events are processed right away */ 881 switch (event->header.type) { 882 case PERF_RECORD_HEADER_ATTR: 883 err = tool->attr(tool, event, &session->evlist); 884 if (err == 0) { 885 perf_session__set_id_hdr_size(session); 886 perf_session__set_comm_exec(session); 887 } 888 return err; 889 case PERF_RECORD_HEADER_EVENT_TYPE: 890 /* 891 * Depreceated, but we need to handle it for sake 892 * of old data files create in pipe mode. 893 */ 894 return 0; 895 case PERF_RECORD_HEADER_TRACING_DATA: 896 /* setup for reading amidst mmap */ 897 lseek(fd, file_offset, SEEK_SET); 898 return tool->tracing_data(tool, event, session); 899 case PERF_RECORD_HEADER_BUILD_ID: 900 return tool->build_id(tool, event, session); 901 case PERF_RECORD_FINISHED_ROUND: 902 return tool->finished_round(tool, event, session); 903 case PERF_RECORD_ID_INDEX: 904 return tool->id_index(tool, event, session); 905 default: 906 return -EINVAL; 907 } 908 } 909 910 static void event_swap(union perf_event *event, bool sample_id_all) 911 { 912 perf_event__swap_op swap; 913 914 swap = perf_event__swap_ops[event->header.type]; 915 if (swap) 916 swap(event, sample_id_all); 917 } 918 919 int perf_session__peek_event(struct perf_session *session, off_t file_offset, 920 void *buf, size_t buf_sz, 921 union perf_event **event_ptr, 922 struct perf_sample *sample) 923 { 924 union perf_event *event; 925 size_t hdr_sz, rest; 926 int fd; 927 928 if (session->one_mmap && !session->header.needs_swap) { 929 event = file_offset - session->one_mmap_offset + 930 session->one_mmap_addr; 931 goto out_parse_sample; 932 } 933 934 if (perf_data_file__is_pipe(session->file)) 935 return -1; 936 937 fd = perf_data_file__fd(session->file); 938 hdr_sz = sizeof(struct perf_event_header); 939 940 if (buf_sz < hdr_sz) 941 return -1; 942 943 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 || 944 readn(fd, &buf, hdr_sz) != (ssize_t)hdr_sz) 945 return -1; 946 947 event = (union perf_event *)buf; 948 949 if (session->header.needs_swap) 950 perf_event_header__bswap(&event->header); 951 952 if (event->header.size < hdr_sz) 953 return -1; 954 955 rest = event->header.size - hdr_sz; 956 957 if (readn(fd, &buf, rest) != (ssize_t)rest) 958 return -1; 959 960 if (session->header.needs_swap) 961 event_swap(event, perf_evlist__sample_id_all(session->evlist)); 962 963 out_parse_sample: 964 965 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START && 966 perf_evlist__parse_sample(session->evlist, event, sample)) 967 return -1; 968 969 *event_ptr = event; 970 971 return 0; 972 } 973 974 static s64 perf_session__process_event(struct perf_session *session, 975 union perf_event *event, 976 struct perf_tool *tool, 977 u64 file_offset) 978 { 979 struct perf_sample sample; 980 int ret; 981 982 if (session->header.needs_swap) 983 event_swap(event, perf_evlist__sample_id_all(session->evlist)); 984 985 if (event->header.type >= PERF_RECORD_HEADER_MAX) 986 return -EINVAL; 987 988 events_stats__inc(&session->stats, event->header.type); 989 990 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 991 return perf_session__process_user_event(session, event, tool, file_offset); 992 993 /* 994 * For all kernel events we get the sample data 995 */ 996 ret = perf_evlist__parse_sample(session->evlist, event, &sample); 997 if (ret) 998 return ret; 999 1000 if (tool->ordered_events) { 1001 ret = perf_session_queue_event(session, event, tool, &sample, 1002 file_offset); 1003 if (ret != -ETIME) 1004 return ret; 1005 } 1006 1007 return perf_session__deliver_event(session, event, &sample, tool, 1008 file_offset); 1009 } 1010 1011 void perf_event_header__bswap(struct perf_event_header *hdr) 1012 { 1013 hdr->type = bswap_32(hdr->type); 1014 hdr->misc = bswap_16(hdr->misc); 1015 hdr->size = bswap_16(hdr->size); 1016 } 1017 1018 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) 1019 { 1020 return machine__findnew_thread(&session->machines.host, -1, pid); 1021 } 1022 1023 static struct thread *perf_session__register_idle_thread(struct perf_session *session) 1024 { 1025 struct thread *thread; 1026 1027 thread = machine__findnew_thread(&session->machines.host, 0, 0); 1028 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) { 1029 pr_err("problem inserting idle task.\n"); 1030 thread = NULL; 1031 } 1032 1033 return thread; 1034 } 1035 1036 static void perf_session__warn_about_errors(const struct perf_session *session, 1037 const struct perf_tool *tool) 1038 { 1039 if (tool->lost == perf_event__process_lost && 1040 session->stats.nr_events[PERF_RECORD_LOST] != 0) { 1041 ui__warning("Processed %d events and lost %d chunks!\n\n" 1042 "Check IO/CPU overload!\n\n", 1043 session->stats.nr_events[0], 1044 session->stats.nr_events[PERF_RECORD_LOST]); 1045 } 1046 1047 if (session->stats.nr_unknown_events != 0) { 1048 ui__warning("Found %u unknown events!\n\n" 1049 "Is this an older tool processing a perf.data " 1050 "file generated by a more recent tool?\n\n" 1051 "If that is not the case, consider " 1052 "reporting to linux-kernel@vger.kernel.org.\n\n", 1053 session->stats.nr_unknown_events); 1054 } 1055 1056 if (session->stats.nr_unknown_id != 0) { 1057 ui__warning("%u samples with id not present in the header\n", 1058 session->stats.nr_unknown_id); 1059 } 1060 1061 if (session->stats.nr_invalid_chains != 0) { 1062 ui__warning("Found invalid callchains!\n\n" 1063 "%u out of %u events were discarded for this reason.\n\n" 1064 "Consider reporting to linux-kernel@vger.kernel.org.\n\n", 1065 session->stats.nr_invalid_chains, 1066 session->stats.nr_events[PERF_RECORD_SAMPLE]); 1067 } 1068 1069 if (session->stats.nr_unprocessable_samples != 0) { 1070 ui__warning("%u unprocessable samples recorded.\n" 1071 "Do you have a KVM guest running and not using 'perf kvm'?\n", 1072 session->stats.nr_unprocessable_samples); 1073 } 1074 } 1075 1076 volatile int session_done; 1077 1078 static int __perf_session__process_pipe_events(struct perf_session *session, 1079 struct perf_tool *tool) 1080 { 1081 int fd = perf_data_file__fd(session->file); 1082 union perf_event *event; 1083 uint32_t size, cur_size = 0; 1084 void *buf = NULL; 1085 s64 skip = 0; 1086 u64 head; 1087 ssize_t err; 1088 void *p; 1089 1090 perf_tool__fill_defaults(tool); 1091 1092 head = 0; 1093 cur_size = sizeof(union perf_event); 1094 1095 buf = malloc(cur_size); 1096 if (!buf) 1097 return -errno; 1098 more: 1099 event = buf; 1100 err = readn(fd, event, sizeof(struct perf_event_header)); 1101 if (err <= 0) { 1102 if (err == 0) 1103 goto done; 1104 1105 pr_err("failed to read event header\n"); 1106 goto out_err; 1107 } 1108 1109 if (session->header.needs_swap) 1110 perf_event_header__bswap(&event->header); 1111 1112 size = event->header.size; 1113 if (size < sizeof(struct perf_event_header)) { 1114 pr_err("bad event header size\n"); 1115 goto out_err; 1116 } 1117 1118 if (size > cur_size) { 1119 void *new = realloc(buf, size); 1120 if (!new) { 1121 pr_err("failed to allocate memory to read event\n"); 1122 goto out_err; 1123 } 1124 buf = new; 1125 cur_size = size; 1126 event = buf; 1127 } 1128 p = event; 1129 p += sizeof(struct perf_event_header); 1130 1131 if (size - sizeof(struct perf_event_header)) { 1132 err = readn(fd, p, size - sizeof(struct perf_event_header)); 1133 if (err <= 0) { 1134 if (err == 0) { 1135 pr_err("unexpected end of event stream\n"); 1136 goto done; 1137 } 1138 1139 pr_err("failed to read event data\n"); 1140 goto out_err; 1141 } 1142 } 1143 1144 if ((skip = perf_session__process_event(session, event, tool, head)) < 0) { 1145 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1146 head, event->header.size, event->header.type); 1147 err = -EINVAL; 1148 goto out_err; 1149 } 1150 1151 head += size; 1152 1153 if (skip > 0) 1154 head += skip; 1155 1156 if (!session_done()) 1157 goto more; 1158 done: 1159 /* do the final flush for ordered samples */ 1160 err = ordered_events__flush(session, tool, OE_FLUSH__FINAL); 1161 out_err: 1162 free(buf); 1163 perf_session__warn_about_errors(session, tool); 1164 ordered_events__free(&session->ordered_events); 1165 return err; 1166 } 1167 1168 static union perf_event * 1169 fetch_mmaped_event(struct perf_session *session, 1170 u64 head, size_t mmap_size, char *buf) 1171 { 1172 union perf_event *event; 1173 1174 /* 1175 * Ensure we have enough space remaining to read 1176 * the size of the event in the headers. 1177 */ 1178 if (head + sizeof(event->header) > mmap_size) 1179 return NULL; 1180 1181 event = (union perf_event *)(buf + head); 1182 1183 if (session->header.needs_swap) 1184 perf_event_header__bswap(&event->header); 1185 1186 if (head + event->header.size > mmap_size) { 1187 /* We're not fetching the event so swap back again */ 1188 if (session->header.needs_swap) 1189 perf_event_header__bswap(&event->header); 1190 return NULL; 1191 } 1192 1193 return event; 1194 } 1195 1196 /* 1197 * On 64bit we can mmap the data file in one go. No need for tiny mmap 1198 * slices. On 32bit we use 32MB. 1199 */ 1200 #if BITS_PER_LONG == 64 1201 #define MMAP_SIZE ULLONG_MAX 1202 #define NUM_MMAPS 1 1203 #else 1204 #define MMAP_SIZE (32 * 1024 * 1024ULL) 1205 #define NUM_MMAPS 128 1206 #endif 1207 1208 int __perf_session__process_events(struct perf_session *session, 1209 u64 data_offset, u64 data_size, 1210 u64 file_size, struct perf_tool *tool) 1211 { 1212 int fd = perf_data_file__fd(session->file); 1213 u64 head, page_offset, file_offset, file_pos, size; 1214 int err, mmap_prot, mmap_flags, map_idx = 0; 1215 size_t mmap_size; 1216 char *buf, *mmaps[NUM_MMAPS]; 1217 union perf_event *event; 1218 struct ui_progress prog; 1219 s64 skip; 1220 1221 perf_tool__fill_defaults(tool); 1222 1223 page_offset = page_size * (data_offset / page_size); 1224 file_offset = page_offset; 1225 head = data_offset - page_offset; 1226 1227 if (data_size && (data_offset + data_size < file_size)) 1228 file_size = data_offset + data_size; 1229 1230 ui_progress__init(&prog, file_size, "Processing events..."); 1231 1232 mmap_size = MMAP_SIZE; 1233 if (mmap_size > file_size) { 1234 mmap_size = file_size; 1235 session->one_mmap = true; 1236 } 1237 1238 memset(mmaps, 0, sizeof(mmaps)); 1239 1240 mmap_prot = PROT_READ; 1241 mmap_flags = MAP_SHARED; 1242 1243 if (session->header.needs_swap) { 1244 mmap_prot |= PROT_WRITE; 1245 mmap_flags = MAP_PRIVATE; 1246 } 1247 remap: 1248 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd, 1249 file_offset); 1250 if (buf == MAP_FAILED) { 1251 pr_err("failed to mmap file\n"); 1252 err = -errno; 1253 goto out_err; 1254 } 1255 mmaps[map_idx] = buf; 1256 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); 1257 file_pos = file_offset + head; 1258 if (session->one_mmap) { 1259 session->one_mmap_addr = buf; 1260 session->one_mmap_offset = file_offset; 1261 } 1262 1263 more: 1264 event = fetch_mmaped_event(session, head, mmap_size, buf); 1265 if (!event) { 1266 if (mmaps[map_idx]) { 1267 munmap(mmaps[map_idx], mmap_size); 1268 mmaps[map_idx] = NULL; 1269 } 1270 1271 page_offset = page_size * (head / page_size); 1272 file_offset += page_offset; 1273 head -= page_offset; 1274 goto remap; 1275 } 1276 1277 size = event->header.size; 1278 1279 if (size < sizeof(struct perf_event_header) || 1280 (skip = perf_session__process_event(session, event, tool, file_pos)) 1281 < 0) { 1282 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1283 file_offset + head, event->header.size, 1284 event->header.type); 1285 err = -EINVAL; 1286 goto out_err; 1287 } 1288 1289 if (skip) 1290 size += skip; 1291 1292 head += size; 1293 file_pos += size; 1294 1295 ui_progress__update(&prog, size); 1296 1297 if (session_done()) 1298 goto out; 1299 1300 if (file_pos < file_size) 1301 goto more; 1302 1303 out: 1304 /* do the final flush for ordered samples */ 1305 err = ordered_events__flush(session, tool, OE_FLUSH__FINAL); 1306 out_err: 1307 ui_progress__finish(); 1308 perf_session__warn_about_errors(session, tool); 1309 ordered_events__free(&session->ordered_events); 1310 session->one_mmap = false; 1311 return err; 1312 } 1313 1314 int perf_session__process_events(struct perf_session *session, 1315 struct perf_tool *tool) 1316 { 1317 u64 size = perf_data_file__size(session->file); 1318 int err; 1319 1320 if (perf_session__register_idle_thread(session) == NULL) 1321 return -ENOMEM; 1322 1323 if (!perf_data_file__is_pipe(session->file)) 1324 err = __perf_session__process_events(session, 1325 session->header.data_offset, 1326 session->header.data_size, 1327 size, tool); 1328 else 1329 err = __perf_session__process_pipe_events(session, tool); 1330 1331 return err; 1332 } 1333 1334 bool perf_session__has_traces(struct perf_session *session, const char *msg) 1335 { 1336 struct perf_evsel *evsel; 1337 1338 evlist__for_each(session->evlist, evsel) { 1339 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) 1340 return true; 1341 } 1342 1343 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); 1344 return false; 1345 } 1346 1347 int maps__set_kallsyms_ref_reloc_sym(struct map **maps, 1348 const char *symbol_name, u64 addr) 1349 { 1350 char *bracket; 1351 enum map_type i; 1352 struct ref_reloc_sym *ref; 1353 1354 ref = zalloc(sizeof(struct ref_reloc_sym)); 1355 if (ref == NULL) 1356 return -ENOMEM; 1357 1358 ref->name = strdup(symbol_name); 1359 if (ref->name == NULL) { 1360 free(ref); 1361 return -ENOMEM; 1362 } 1363 1364 bracket = strchr(ref->name, ']'); 1365 if (bracket) 1366 *bracket = '\0'; 1367 1368 ref->addr = addr; 1369 1370 for (i = 0; i < MAP__NR_TYPES; ++i) { 1371 struct kmap *kmap = map__kmap(maps[i]); 1372 kmap->ref_reloc_sym = ref; 1373 } 1374 1375 return 0; 1376 } 1377 1378 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp) 1379 { 1380 return machines__fprintf_dsos(&session->machines, fp); 1381 } 1382 1383 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp, 1384 bool (skip)(struct dso *dso, int parm), int parm) 1385 { 1386 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm); 1387 } 1388 1389 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) 1390 { 1391 size_t ret = fprintf(fp, "Aggregated stats:\n"); 1392 1393 ret += events_stats__fprintf(&session->stats, fp); 1394 return ret; 1395 } 1396 1397 size_t perf_session__fprintf(struct perf_session *session, FILE *fp) 1398 { 1399 /* 1400 * FIXME: Here we have to actually print all the machines in this 1401 * session, not just the host... 1402 */ 1403 return machine__fprintf(&session->machines.host, fp); 1404 } 1405 1406 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, 1407 unsigned int type) 1408 { 1409 struct perf_evsel *pos; 1410 1411 evlist__for_each(session->evlist, pos) { 1412 if (pos->attr.type == type) 1413 return pos; 1414 } 1415 return NULL; 1416 } 1417 1418 void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample, 1419 struct addr_location *al, 1420 unsigned int print_opts, unsigned int stack_depth) 1421 { 1422 struct callchain_cursor_node *node; 1423 int print_ip = print_opts & PRINT_IP_OPT_IP; 1424 int print_sym = print_opts & PRINT_IP_OPT_SYM; 1425 int print_dso = print_opts & PRINT_IP_OPT_DSO; 1426 int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET; 1427 int print_oneline = print_opts & PRINT_IP_OPT_ONELINE; 1428 int print_srcline = print_opts & PRINT_IP_OPT_SRCLINE; 1429 char s = print_oneline ? ' ' : '\t'; 1430 1431 if (symbol_conf.use_callchain && sample->callchain) { 1432 struct addr_location node_al; 1433 1434 if (thread__resolve_callchain(al->thread, evsel, 1435 sample, NULL, NULL, 1436 PERF_MAX_STACK_DEPTH) != 0) { 1437 if (verbose) 1438 error("Failed to resolve callchain. Skipping\n"); 1439 return; 1440 } 1441 callchain_cursor_commit(&callchain_cursor); 1442 1443 if (print_symoffset) 1444 node_al = *al; 1445 1446 while (stack_depth) { 1447 u64 addr = 0; 1448 1449 node = callchain_cursor_current(&callchain_cursor); 1450 if (!node) 1451 break; 1452 1453 if (node->sym && node->sym->ignore) 1454 goto next; 1455 1456 if (print_ip) 1457 printf("%c%16" PRIx64, s, node->ip); 1458 1459 if (node->map) 1460 addr = node->map->map_ip(node->map, node->ip); 1461 1462 if (print_sym) { 1463 printf(" "); 1464 if (print_symoffset) { 1465 node_al.addr = addr; 1466 node_al.map = node->map; 1467 symbol__fprintf_symname_offs(node->sym, &node_al, stdout); 1468 } else 1469 symbol__fprintf_symname(node->sym, stdout); 1470 } 1471 1472 if (print_dso) { 1473 printf(" ("); 1474 map__fprintf_dsoname(node->map, stdout); 1475 printf(")"); 1476 } 1477 1478 if (print_srcline) 1479 map__fprintf_srcline(node->map, addr, "\n ", 1480 stdout); 1481 1482 if (!print_oneline) 1483 printf("\n"); 1484 1485 stack_depth--; 1486 next: 1487 callchain_cursor_advance(&callchain_cursor); 1488 } 1489 1490 } else { 1491 if (al->sym && al->sym->ignore) 1492 return; 1493 1494 if (print_ip) 1495 printf("%16" PRIx64, sample->ip); 1496 1497 if (print_sym) { 1498 printf(" "); 1499 if (print_symoffset) 1500 symbol__fprintf_symname_offs(al->sym, al, 1501 stdout); 1502 else 1503 symbol__fprintf_symname(al->sym, stdout); 1504 } 1505 1506 if (print_dso) { 1507 printf(" ("); 1508 map__fprintf_dsoname(al->map, stdout); 1509 printf(")"); 1510 } 1511 1512 if (print_srcline) 1513 map__fprintf_srcline(al->map, al->addr, "\n ", stdout); 1514 } 1515 } 1516 1517 int perf_session__cpu_bitmap(struct perf_session *session, 1518 const char *cpu_list, unsigned long *cpu_bitmap) 1519 { 1520 int i, err = -1; 1521 struct cpu_map *map; 1522 1523 for (i = 0; i < PERF_TYPE_MAX; ++i) { 1524 struct perf_evsel *evsel; 1525 1526 evsel = perf_session__find_first_evtype(session, i); 1527 if (!evsel) 1528 continue; 1529 1530 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { 1531 pr_err("File does not contain CPU events. " 1532 "Remove -c option to proceed.\n"); 1533 return -1; 1534 } 1535 } 1536 1537 map = cpu_map__new(cpu_list); 1538 if (map == NULL) { 1539 pr_err("Invalid cpu_list\n"); 1540 return -1; 1541 } 1542 1543 for (i = 0; i < map->nr; i++) { 1544 int cpu = map->map[i]; 1545 1546 if (cpu >= MAX_NR_CPUS) { 1547 pr_err("Requested CPU %d too large. " 1548 "Consider raising MAX_NR_CPUS\n", cpu); 1549 goto out_delete_map; 1550 } 1551 1552 set_bit(cpu, cpu_bitmap); 1553 } 1554 1555 err = 0; 1556 1557 out_delete_map: 1558 cpu_map__delete(map); 1559 return err; 1560 } 1561 1562 void perf_session__fprintf_info(struct perf_session *session, FILE *fp, 1563 bool full) 1564 { 1565 struct stat st; 1566 int fd, ret; 1567 1568 if (session == NULL || fp == NULL) 1569 return; 1570 1571 fd = perf_data_file__fd(session->file); 1572 1573 ret = fstat(fd, &st); 1574 if (ret == -1) 1575 return; 1576 1577 fprintf(fp, "# ========\n"); 1578 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); 1579 perf_header__fprintf_info(session, fp, full); 1580 fprintf(fp, "# ========\n#\n"); 1581 } 1582 1583 1584 int __perf_session__set_tracepoints_handlers(struct perf_session *session, 1585 const struct perf_evsel_str_handler *assocs, 1586 size_t nr_assocs) 1587 { 1588 struct perf_evsel *evsel; 1589 size_t i; 1590 int err; 1591 1592 for (i = 0; i < nr_assocs; i++) { 1593 /* 1594 * Adding a handler for an event not in the session, 1595 * just ignore it. 1596 */ 1597 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name); 1598 if (evsel == NULL) 1599 continue; 1600 1601 err = -EEXIST; 1602 if (evsel->handler != NULL) 1603 goto out; 1604 evsel->handler = assocs[i].handler; 1605 } 1606 1607 err = 0; 1608 out: 1609 return err; 1610 } 1611 1612 int perf_event__process_id_index(struct perf_tool *tool __maybe_unused, 1613 union perf_event *event, 1614 struct perf_session *session) 1615 { 1616 struct perf_evlist *evlist = session->evlist; 1617 struct id_index_event *ie = &event->id_index; 1618 size_t i, nr, max_nr; 1619 1620 max_nr = (ie->header.size - sizeof(struct id_index_event)) / 1621 sizeof(struct id_index_entry); 1622 nr = ie->nr; 1623 if (nr > max_nr) 1624 return -EINVAL; 1625 1626 if (dump_trace) 1627 fprintf(stdout, " nr: %zu\n", nr); 1628 1629 for (i = 0; i < nr; i++) { 1630 struct id_index_entry *e = &ie->entries[i]; 1631 struct perf_sample_id *sid; 1632 1633 if (dump_trace) { 1634 fprintf(stdout, " ... id: %"PRIu64, e->id); 1635 fprintf(stdout, " idx: %"PRIu64, e->idx); 1636 fprintf(stdout, " cpu: %"PRId64, e->cpu); 1637 fprintf(stdout, " tid: %"PRId64"\n", e->tid); 1638 } 1639 1640 sid = perf_evlist__id2sid(evlist, e->id); 1641 if (!sid) 1642 return -ENOENT; 1643 sid->idx = e->idx; 1644 sid->cpu = e->cpu; 1645 sid->tid = e->tid; 1646 } 1647 return 0; 1648 } 1649 1650 int perf_event__synthesize_id_index(struct perf_tool *tool, 1651 perf_event__handler_t process, 1652 struct perf_evlist *evlist, 1653 struct machine *machine) 1654 { 1655 union perf_event *ev; 1656 struct perf_evsel *evsel; 1657 size_t nr = 0, i = 0, sz, max_nr, n; 1658 int err; 1659 1660 pr_debug2("Synthesizing id index\n"); 1661 1662 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) / 1663 sizeof(struct id_index_entry); 1664 1665 evlist__for_each(evlist, evsel) 1666 nr += evsel->ids; 1667 1668 n = nr > max_nr ? max_nr : nr; 1669 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry); 1670 ev = zalloc(sz); 1671 if (!ev) 1672 return -ENOMEM; 1673 1674 ev->id_index.header.type = PERF_RECORD_ID_INDEX; 1675 ev->id_index.header.size = sz; 1676 ev->id_index.nr = n; 1677 1678 evlist__for_each(evlist, evsel) { 1679 u32 j; 1680 1681 for (j = 0; j < evsel->ids; j++) { 1682 struct id_index_entry *e; 1683 struct perf_sample_id *sid; 1684 1685 if (i >= n) { 1686 err = process(tool, ev, NULL, machine); 1687 if (err) 1688 goto out_err; 1689 nr -= n; 1690 i = 0; 1691 } 1692 1693 e = &ev->id_index.entries[i++]; 1694 1695 e->id = evsel->id[j]; 1696 1697 sid = perf_evlist__id2sid(evlist, e->id); 1698 if (!sid) { 1699 free(ev); 1700 return -ENOENT; 1701 } 1702 1703 e->idx = sid->idx; 1704 e->cpu = sid->cpu; 1705 e->tid = sid->tid; 1706 } 1707 } 1708 1709 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry); 1710 ev->id_index.header.size = sz; 1711 ev->id_index.nr = nr; 1712 1713 err = process(tool, ev, NULL, machine); 1714 out_err: 1715 free(ev); 1716 1717 return err; 1718 } 1719