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 const char *regs_abi[] = { 596 [PERF_SAMPLE_REGS_ABI_NONE] = "none", 597 [PERF_SAMPLE_REGS_ABI_32] = "32-bit", 598 [PERF_SAMPLE_REGS_ABI_64] = "64-bit", 599 }; 600 601 static inline const char *regs_dump_abi(struct regs_dump *d) 602 { 603 if (d->abi > PERF_SAMPLE_REGS_ABI_64) 604 return "unknown"; 605 606 return regs_abi[d->abi]; 607 } 608 609 static void regs__printf(const char *type, struct regs_dump *regs) 610 { 611 u64 mask = regs->mask; 612 613 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n", 614 type, 615 mask, 616 regs_dump_abi(regs)); 617 618 regs_dump__printf(mask, regs->regs); 619 } 620 621 static void regs_user__printf(struct perf_sample *sample) 622 { 623 struct regs_dump *user_regs = &sample->user_regs; 624 625 if (user_regs->regs) 626 regs__printf("user", user_regs); 627 } 628 629 static void regs_intr__printf(struct perf_sample *sample) 630 { 631 struct regs_dump *intr_regs = &sample->intr_regs; 632 633 if (intr_regs->regs) 634 regs__printf("intr", intr_regs); 635 } 636 637 static void stack_user__printf(struct stack_dump *dump) 638 { 639 printf("... ustack: size %" PRIu64 ", offset 0x%x\n", 640 dump->size, dump->offset); 641 } 642 643 static void perf_session__print_tstamp(struct perf_session *session, 644 union perf_event *event, 645 struct perf_sample *sample) 646 { 647 u64 sample_type = __perf_evlist__combined_sample_type(session->evlist); 648 649 if (event->header.type != PERF_RECORD_SAMPLE && 650 !perf_evlist__sample_id_all(session->evlist)) { 651 fputs("-1 -1 ", stdout); 652 return; 653 } 654 655 if ((sample_type & PERF_SAMPLE_CPU)) 656 printf("%u ", sample->cpu); 657 658 if (sample_type & PERF_SAMPLE_TIME) 659 printf("%" PRIu64 " ", sample->time); 660 } 661 662 static void sample_read__printf(struct perf_sample *sample, u64 read_format) 663 { 664 printf("... sample_read:\n"); 665 666 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 667 printf("...... time enabled %016" PRIx64 "\n", 668 sample->read.time_enabled); 669 670 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 671 printf("...... time running %016" PRIx64 "\n", 672 sample->read.time_running); 673 674 if (read_format & PERF_FORMAT_GROUP) { 675 u64 i; 676 677 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr); 678 679 for (i = 0; i < sample->read.group.nr; i++) { 680 struct sample_read_value *value; 681 682 value = &sample->read.group.values[i]; 683 printf("..... id %016" PRIx64 684 ", value %016" PRIx64 "\n", 685 value->id, value->value); 686 } 687 } else 688 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n", 689 sample->read.one.id, sample->read.one.value); 690 } 691 692 static void dump_event(struct perf_session *session, union perf_event *event, 693 u64 file_offset, struct perf_sample *sample) 694 { 695 if (!dump_trace) 696 return; 697 698 printf("\n%#" PRIx64 " [%#x]: event: %d\n", 699 file_offset, event->header.size, event->header.type); 700 701 trace_event(event); 702 703 if (sample) 704 perf_session__print_tstamp(session, event, sample); 705 706 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, 707 event->header.size, perf_event__name(event->header.type)); 708 } 709 710 static void dump_sample(struct perf_evsel *evsel, union perf_event *event, 711 struct perf_sample *sample) 712 { 713 u64 sample_type; 714 715 if (!dump_trace) 716 return; 717 718 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", 719 event->header.misc, sample->pid, sample->tid, sample->ip, 720 sample->period, sample->addr); 721 722 sample_type = evsel->attr.sample_type; 723 724 if (sample_type & PERF_SAMPLE_CALLCHAIN) 725 callchain__printf(sample); 726 727 if (sample_type & PERF_SAMPLE_BRANCH_STACK) 728 branch_stack__printf(sample); 729 730 if (sample_type & PERF_SAMPLE_REGS_USER) 731 regs_user__printf(sample); 732 733 if (sample_type & PERF_SAMPLE_REGS_INTR) 734 regs_intr__printf(sample); 735 736 if (sample_type & PERF_SAMPLE_STACK_USER) 737 stack_user__printf(&sample->user_stack); 738 739 if (sample_type & PERF_SAMPLE_WEIGHT) 740 printf("... weight: %" PRIu64 "\n", sample->weight); 741 742 if (sample_type & PERF_SAMPLE_DATA_SRC) 743 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src); 744 745 if (sample_type & PERF_SAMPLE_TRANSACTION) 746 printf("... transaction: %" PRIx64 "\n", sample->transaction); 747 748 if (sample_type & PERF_SAMPLE_READ) 749 sample_read__printf(sample, evsel->attr.read_format); 750 } 751 752 static struct machine * 753 perf_session__find_machine_for_cpumode(struct perf_session *session, 754 union perf_event *event, 755 struct perf_sample *sample) 756 { 757 const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; 758 struct machine *machine; 759 760 if (perf_guest && 761 ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || 762 (cpumode == PERF_RECORD_MISC_GUEST_USER))) { 763 u32 pid; 764 765 if (event->header.type == PERF_RECORD_MMAP 766 || event->header.type == PERF_RECORD_MMAP2) 767 pid = event->mmap.pid; 768 else 769 pid = sample->pid; 770 771 machine = perf_session__find_machine(session, pid); 772 if (!machine) 773 machine = perf_session__findnew_machine(session, 774 DEFAULT_GUEST_KERNEL_ID); 775 return machine; 776 } 777 778 return &session->machines.host; 779 } 780 781 static int deliver_sample_value(struct perf_session *session, 782 struct perf_tool *tool, 783 union perf_event *event, 784 struct perf_sample *sample, 785 struct sample_read_value *v, 786 struct machine *machine) 787 { 788 struct perf_sample_id *sid; 789 790 sid = perf_evlist__id2sid(session->evlist, v->id); 791 if (sid) { 792 sample->id = v->id; 793 sample->period = v->value - sid->period; 794 sid->period = v->value; 795 } 796 797 if (!sid || sid->evsel == NULL) { 798 ++session->stats.nr_unknown_id; 799 return 0; 800 } 801 802 return tool->sample(tool, event, sample, sid->evsel, machine); 803 } 804 805 static int deliver_sample_group(struct perf_session *session, 806 struct perf_tool *tool, 807 union perf_event *event, 808 struct perf_sample *sample, 809 struct machine *machine) 810 { 811 int ret = -EINVAL; 812 u64 i; 813 814 for (i = 0; i < sample->read.group.nr; i++) { 815 ret = deliver_sample_value(session, tool, event, sample, 816 &sample->read.group.values[i], 817 machine); 818 if (ret) 819 break; 820 } 821 822 return ret; 823 } 824 825 static int 826 perf_session__deliver_sample(struct perf_session *session, 827 struct perf_tool *tool, 828 union perf_event *event, 829 struct perf_sample *sample, 830 struct perf_evsel *evsel, 831 struct machine *machine) 832 { 833 /* We know evsel != NULL. */ 834 u64 sample_type = evsel->attr.sample_type; 835 u64 read_format = evsel->attr.read_format; 836 837 /* Standard sample delievery. */ 838 if (!(sample_type & PERF_SAMPLE_READ)) 839 return tool->sample(tool, event, sample, evsel, machine); 840 841 /* For PERF_SAMPLE_READ we have either single or group mode. */ 842 if (read_format & PERF_FORMAT_GROUP) 843 return deliver_sample_group(session, tool, event, sample, 844 machine); 845 else 846 return deliver_sample_value(session, tool, event, sample, 847 &sample->read.one, machine); 848 } 849 850 int perf_session__deliver_event(struct perf_session *session, 851 union perf_event *event, 852 struct perf_sample *sample, 853 struct perf_tool *tool, u64 file_offset) 854 { 855 struct perf_evsel *evsel; 856 struct machine *machine; 857 858 dump_event(session, event, file_offset, sample); 859 860 evsel = perf_evlist__id2evsel(session->evlist, sample->id); 861 862 machine = perf_session__find_machine_for_cpumode(session, event, 863 sample); 864 865 switch (event->header.type) { 866 case PERF_RECORD_SAMPLE: 867 dump_sample(evsel, event, sample); 868 if (evsel == NULL) { 869 ++session->stats.nr_unknown_id; 870 return 0; 871 } 872 if (machine == NULL) { 873 ++session->stats.nr_unprocessable_samples; 874 return 0; 875 } 876 return perf_session__deliver_sample(session, tool, event, 877 sample, evsel, machine); 878 case PERF_RECORD_MMAP: 879 return tool->mmap(tool, event, sample, machine); 880 case PERF_RECORD_MMAP2: 881 return tool->mmap2(tool, event, sample, machine); 882 case PERF_RECORD_COMM: 883 return tool->comm(tool, event, sample, machine); 884 case PERF_RECORD_FORK: 885 return tool->fork(tool, event, sample, machine); 886 case PERF_RECORD_EXIT: 887 return tool->exit(tool, event, sample, machine); 888 case PERF_RECORD_LOST: 889 if (tool->lost == perf_event__process_lost) 890 session->stats.total_lost += event->lost.lost; 891 return tool->lost(tool, event, sample, machine); 892 case PERF_RECORD_READ: 893 return tool->read(tool, event, sample, evsel, machine); 894 case PERF_RECORD_THROTTLE: 895 return tool->throttle(tool, event, sample, machine); 896 case PERF_RECORD_UNTHROTTLE: 897 return tool->unthrottle(tool, event, sample, machine); 898 default: 899 ++session->stats.nr_unknown_events; 900 return -1; 901 } 902 } 903 904 static s64 perf_session__process_user_event(struct perf_session *session, 905 union perf_event *event, 906 struct perf_tool *tool, 907 u64 file_offset) 908 { 909 int fd = perf_data_file__fd(session->file); 910 int err; 911 912 dump_event(session, event, file_offset, NULL); 913 914 /* These events are processed right away */ 915 switch (event->header.type) { 916 case PERF_RECORD_HEADER_ATTR: 917 err = tool->attr(tool, event, &session->evlist); 918 if (err == 0) { 919 perf_session__set_id_hdr_size(session); 920 perf_session__set_comm_exec(session); 921 } 922 return err; 923 case PERF_RECORD_HEADER_EVENT_TYPE: 924 /* 925 * Depreceated, but we need to handle it for sake 926 * of old data files create in pipe mode. 927 */ 928 return 0; 929 case PERF_RECORD_HEADER_TRACING_DATA: 930 /* setup for reading amidst mmap */ 931 lseek(fd, file_offset, SEEK_SET); 932 return tool->tracing_data(tool, event, session); 933 case PERF_RECORD_HEADER_BUILD_ID: 934 return tool->build_id(tool, event, session); 935 case PERF_RECORD_FINISHED_ROUND: 936 return tool->finished_round(tool, event, session); 937 case PERF_RECORD_ID_INDEX: 938 return tool->id_index(tool, event, session); 939 default: 940 return -EINVAL; 941 } 942 } 943 944 int perf_session__deliver_synth_event(struct perf_session *session, 945 union perf_event *event, 946 struct perf_sample *sample, 947 struct perf_tool *tool) 948 { 949 events_stats__inc(&session->stats, event->header.type); 950 951 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 952 return perf_session__process_user_event(session, event, tool, 0); 953 954 return perf_session__deliver_event(session, event, sample, tool, 0); 955 } 956 957 static void event_swap(union perf_event *event, bool sample_id_all) 958 { 959 perf_event__swap_op swap; 960 961 swap = perf_event__swap_ops[event->header.type]; 962 if (swap) 963 swap(event, sample_id_all); 964 } 965 966 int perf_session__peek_event(struct perf_session *session, off_t file_offset, 967 void *buf, size_t buf_sz, 968 union perf_event **event_ptr, 969 struct perf_sample *sample) 970 { 971 union perf_event *event; 972 size_t hdr_sz, rest; 973 int fd; 974 975 if (session->one_mmap && !session->header.needs_swap) { 976 event = file_offset - session->one_mmap_offset + 977 session->one_mmap_addr; 978 goto out_parse_sample; 979 } 980 981 if (perf_data_file__is_pipe(session->file)) 982 return -1; 983 984 fd = perf_data_file__fd(session->file); 985 hdr_sz = sizeof(struct perf_event_header); 986 987 if (buf_sz < hdr_sz) 988 return -1; 989 990 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 || 991 readn(fd, &buf, hdr_sz) != (ssize_t)hdr_sz) 992 return -1; 993 994 event = (union perf_event *)buf; 995 996 if (session->header.needs_swap) 997 perf_event_header__bswap(&event->header); 998 999 if (event->header.size < hdr_sz) 1000 return -1; 1001 1002 rest = event->header.size - hdr_sz; 1003 1004 if (readn(fd, &buf, rest) != (ssize_t)rest) 1005 return -1; 1006 1007 if (session->header.needs_swap) 1008 event_swap(event, perf_evlist__sample_id_all(session->evlist)); 1009 1010 out_parse_sample: 1011 1012 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START && 1013 perf_evlist__parse_sample(session->evlist, event, sample)) 1014 return -1; 1015 1016 *event_ptr = event; 1017 1018 return 0; 1019 } 1020 1021 static s64 perf_session__process_event(struct perf_session *session, 1022 union perf_event *event, 1023 struct perf_tool *tool, 1024 u64 file_offset) 1025 { 1026 struct perf_sample sample; 1027 int ret; 1028 1029 if (session->header.needs_swap) 1030 event_swap(event, perf_evlist__sample_id_all(session->evlist)); 1031 1032 if (event->header.type >= PERF_RECORD_HEADER_MAX) 1033 return -EINVAL; 1034 1035 events_stats__inc(&session->stats, event->header.type); 1036 1037 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 1038 return perf_session__process_user_event(session, event, tool, file_offset); 1039 1040 /* 1041 * For all kernel events we get the sample data 1042 */ 1043 ret = perf_evlist__parse_sample(session->evlist, event, &sample); 1044 if (ret) 1045 return ret; 1046 1047 if (tool->ordered_events) { 1048 ret = perf_session_queue_event(session, event, tool, &sample, 1049 file_offset); 1050 if (ret != -ETIME) 1051 return ret; 1052 } 1053 1054 return perf_session__deliver_event(session, event, &sample, tool, 1055 file_offset); 1056 } 1057 1058 void perf_event_header__bswap(struct perf_event_header *hdr) 1059 { 1060 hdr->type = bswap_32(hdr->type); 1061 hdr->misc = bswap_16(hdr->misc); 1062 hdr->size = bswap_16(hdr->size); 1063 } 1064 1065 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) 1066 { 1067 return machine__findnew_thread(&session->machines.host, -1, pid); 1068 } 1069 1070 static struct thread *perf_session__register_idle_thread(struct perf_session *session) 1071 { 1072 struct thread *thread; 1073 1074 thread = machine__findnew_thread(&session->machines.host, 0, 0); 1075 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) { 1076 pr_err("problem inserting idle task.\n"); 1077 thread = NULL; 1078 } 1079 1080 return thread; 1081 } 1082 1083 static void perf_session__warn_about_errors(const struct perf_session *session, 1084 const struct perf_tool *tool) 1085 { 1086 if (tool->lost == perf_event__process_lost && 1087 session->stats.nr_events[PERF_RECORD_LOST] != 0) { 1088 ui__warning("Processed %d events and lost %d chunks!\n\n" 1089 "Check IO/CPU overload!\n\n", 1090 session->stats.nr_events[0], 1091 session->stats.nr_events[PERF_RECORD_LOST]); 1092 } 1093 1094 if (session->stats.nr_unknown_events != 0) { 1095 ui__warning("Found %u unknown events!\n\n" 1096 "Is this an older tool processing a perf.data " 1097 "file generated by a more recent tool?\n\n" 1098 "If that is not the case, consider " 1099 "reporting to linux-kernel@vger.kernel.org.\n\n", 1100 session->stats.nr_unknown_events); 1101 } 1102 1103 if (session->stats.nr_unknown_id != 0) { 1104 ui__warning("%u samples with id not present in the header\n", 1105 session->stats.nr_unknown_id); 1106 } 1107 1108 if (session->stats.nr_invalid_chains != 0) { 1109 ui__warning("Found invalid callchains!\n\n" 1110 "%u out of %u events were discarded for this reason.\n\n" 1111 "Consider reporting to linux-kernel@vger.kernel.org.\n\n", 1112 session->stats.nr_invalid_chains, 1113 session->stats.nr_events[PERF_RECORD_SAMPLE]); 1114 } 1115 1116 if (session->stats.nr_unprocessable_samples != 0) { 1117 ui__warning("%u unprocessable samples recorded.\n" 1118 "Do you have a KVM guest running and not using 'perf kvm'?\n", 1119 session->stats.nr_unprocessable_samples); 1120 } 1121 } 1122 1123 volatile int session_done; 1124 1125 static int __perf_session__process_pipe_events(struct perf_session *session, 1126 struct perf_tool *tool) 1127 { 1128 int fd = perf_data_file__fd(session->file); 1129 union perf_event *event; 1130 uint32_t size, cur_size = 0; 1131 void *buf = NULL; 1132 s64 skip = 0; 1133 u64 head; 1134 ssize_t err; 1135 void *p; 1136 1137 perf_tool__fill_defaults(tool); 1138 1139 head = 0; 1140 cur_size = sizeof(union perf_event); 1141 1142 buf = malloc(cur_size); 1143 if (!buf) 1144 return -errno; 1145 more: 1146 event = buf; 1147 err = readn(fd, event, sizeof(struct perf_event_header)); 1148 if (err <= 0) { 1149 if (err == 0) 1150 goto done; 1151 1152 pr_err("failed to read event header\n"); 1153 goto out_err; 1154 } 1155 1156 if (session->header.needs_swap) 1157 perf_event_header__bswap(&event->header); 1158 1159 size = event->header.size; 1160 if (size < sizeof(struct perf_event_header)) { 1161 pr_err("bad event header size\n"); 1162 goto out_err; 1163 } 1164 1165 if (size > cur_size) { 1166 void *new = realloc(buf, size); 1167 if (!new) { 1168 pr_err("failed to allocate memory to read event\n"); 1169 goto out_err; 1170 } 1171 buf = new; 1172 cur_size = size; 1173 event = buf; 1174 } 1175 p = event; 1176 p += sizeof(struct perf_event_header); 1177 1178 if (size - sizeof(struct perf_event_header)) { 1179 err = readn(fd, p, size - sizeof(struct perf_event_header)); 1180 if (err <= 0) { 1181 if (err == 0) { 1182 pr_err("unexpected end of event stream\n"); 1183 goto done; 1184 } 1185 1186 pr_err("failed to read event data\n"); 1187 goto out_err; 1188 } 1189 } 1190 1191 if ((skip = perf_session__process_event(session, event, tool, head)) < 0) { 1192 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1193 head, event->header.size, event->header.type); 1194 err = -EINVAL; 1195 goto out_err; 1196 } 1197 1198 head += size; 1199 1200 if (skip > 0) 1201 head += skip; 1202 1203 if (!session_done()) 1204 goto more; 1205 done: 1206 /* do the final flush for ordered samples */ 1207 err = ordered_events__flush(session, tool, OE_FLUSH__FINAL); 1208 out_err: 1209 free(buf); 1210 perf_session__warn_about_errors(session, tool); 1211 ordered_events__free(&session->ordered_events); 1212 return err; 1213 } 1214 1215 static union perf_event * 1216 fetch_mmaped_event(struct perf_session *session, 1217 u64 head, size_t mmap_size, char *buf) 1218 { 1219 union perf_event *event; 1220 1221 /* 1222 * Ensure we have enough space remaining to read 1223 * the size of the event in the headers. 1224 */ 1225 if (head + sizeof(event->header) > mmap_size) 1226 return NULL; 1227 1228 event = (union perf_event *)(buf + head); 1229 1230 if (session->header.needs_swap) 1231 perf_event_header__bswap(&event->header); 1232 1233 if (head + event->header.size > mmap_size) { 1234 /* We're not fetching the event so swap back again */ 1235 if (session->header.needs_swap) 1236 perf_event_header__bswap(&event->header); 1237 return NULL; 1238 } 1239 1240 return event; 1241 } 1242 1243 /* 1244 * On 64bit we can mmap the data file in one go. No need for tiny mmap 1245 * slices. On 32bit we use 32MB. 1246 */ 1247 #if BITS_PER_LONG == 64 1248 #define MMAP_SIZE ULLONG_MAX 1249 #define NUM_MMAPS 1 1250 #else 1251 #define MMAP_SIZE (32 * 1024 * 1024ULL) 1252 #define NUM_MMAPS 128 1253 #endif 1254 1255 int __perf_session__process_events(struct perf_session *session, 1256 u64 data_offset, u64 data_size, 1257 u64 file_size, struct perf_tool *tool) 1258 { 1259 int fd = perf_data_file__fd(session->file); 1260 u64 head, page_offset, file_offset, file_pos, size; 1261 int err, mmap_prot, mmap_flags, map_idx = 0; 1262 size_t mmap_size; 1263 char *buf, *mmaps[NUM_MMAPS]; 1264 union perf_event *event; 1265 struct ui_progress prog; 1266 s64 skip; 1267 1268 perf_tool__fill_defaults(tool); 1269 1270 page_offset = page_size * (data_offset / page_size); 1271 file_offset = page_offset; 1272 head = data_offset - page_offset; 1273 1274 if (data_size && (data_offset + data_size < file_size)) 1275 file_size = data_offset + data_size; 1276 1277 ui_progress__init(&prog, file_size, "Processing events..."); 1278 1279 mmap_size = MMAP_SIZE; 1280 if (mmap_size > file_size) { 1281 mmap_size = file_size; 1282 session->one_mmap = true; 1283 } 1284 1285 memset(mmaps, 0, sizeof(mmaps)); 1286 1287 mmap_prot = PROT_READ; 1288 mmap_flags = MAP_SHARED; 1289 1290 if (session->header.needs_swap) { 1291 mmap_prot |= PROT_WRITE; 1292 mmap_flags = MAP_PRIVATE; 1293 } 1294 remap: 1295 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd, 1296 file_offset); 1297 if (buf == MAP_FAILED) { 1298 pr_err("failed to mmap file\n"); 1299 err = -errno; 1300 goto out_err; 1301 } 1302 mmaps[map_idx] = buf; 1303 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); 1304 file_pos = file_offset + head; 1305 if (session->one_mmap) { 1306 session->one_mmap_addr = buf; 1307 session->one_mmap_offset = file_offset; 1308 } 1309 1310 more: 1311 event = fetch_mmaped_event(session, head, mmap_size, buf); 1312 if (!event) { 1313 if (mmaps[map_idx]) { 1314 munmap(mmaps[map_idx], mmap_size); 1315 mmaps[map_idx] = NULL; 1316 } 1317 1318 page_offset = page_size * (head / page_size); 1319 file_offset += page_offset; 1320 head -= page_offset; 1321 goto remap; 1322 } 1323 1324 size = event->header.size; 1325 1326 if (size < sizeof(struct perf_event_header) || 1327 (skip = perf_session__process_event(session, event, tool, file_pos)) 1328 < 0) { 1329 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1330 file_offset + head, event->header.size, 1331 event->header.type); 1332 err = -EINVAL; 1333 goto out_err; 1334 } 1335 1336 if (skip) 1337 size += skip; 1338 1339 head += size; 1340 file_pos += size; 1341 1342 ui_progress__update(&prog, size); 1343 1344 if (session_done()) 1345 goto out; 1346 1347 if (file_pos < file_size) 1348 goto more; 1349 1350 out: 1351 /* do the final flush for ordered samples */ 1352 err = ordered_events__flush(session, tool, OE_FLUSH__FINAL); 1353 out_err: 1354 ui_progress__finish(); 1355 perf_session__warn_about_errors(session, tool); 1356 ordered_events__free(&session->ordered_events); 1357 session->one_mmap = false; 1358 return err; 1359 } 1360 1361 int perf_session__process_events(struct perf_session *session, 1362 struct perf_tool *tool) 1363 { 1364 u64 size = perf_data_file__size(session->file); 1365 int err; 1366 1367 if (perf_session__register_idle_thread(session) == NULL) 1368 return -ENOMEM; 1369 1370 if (!perf_data_file__is_pipe(session->file)) 1371 err = __perf_session__process_events(session, 1372 session->header.data_offset, 1373 session->header.data_size, 1374 size, tool); 1375 else 1376 err = __perf_session__process_pipe_events(session, tool); 1377 1378 return err; 1379 } 1380 1381 bool perf_session__has_traces(struct perf_session *session, const char *msg) 1382 { 1383 struct perf_evsel *evsel; 1384 1385 evlist__for_each(session->evlist, evsel) { 1386 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) 1387 return true; 1388 } 1389 1390 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); 1391 return false; 1392 } 1393 1394 int maps__set_kallsyms_ref_reloc_sym(struct map **maps, 1395 const char *symbol_name, u64 addr) 1396 { 1397 char *bracket; 1398 enum map_type i; 1399 struct ref_reloc_sym *ref; 1400 1401 ref = zalloc(sizeof(struct ref_reloc_sym)); 1402 if (ref == NULL) 1403 return -ENOMEM; 1404 1405 ref->name = strdup(symbol_name); 1406 if (ref->name == NULL) { 1407 free(ref); 1408 return -ENOMEM; 1409 } 1410 1411 bracket = strchr(ref->name, ']'); 1412 if (bracket) 1413 *bracket = '\0'; 1414 1415 ref->addr = addr; 1416 1417 for (i = 0; i < MAP__NR_TYPES; ++i) { 1418 struct kmap *kmap = map__kmap(maps[i]); 1419 kmap->ref_reloc_sym = ref; 1420 } 1421 1422 return 0; 1423 } 1424 1425 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp) 1426 { 1427 return machines__fprintf_dsos(&session->machines, fp); 1428 } 1429 1430 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp, 1431 bool (skip)(struct dso *dso, int parm), int parm) 1432 { 1433 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm); 1434 } 1435 1436 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) 1437 { 1438 size_t ret = fprintf(fp, "Aggregated stats:\n"); 1439 1440 ret += events_stats__fprintf(&session->stats, fp); 1441 return ret; 1442 } 1443 1444 size_t perf_session__fprintf(struct perf_session *session, FILE *fp) 1445 { 1446 /* 1447 * FIXME: Here we have to actually print all the machines in this 1448 * session, not just the host... 1449 */ 1450 return machine__fprintf(&session->machines.host, fp); 1451 } 1452 1453 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, 1454 unsigned int type) 1455 { 1456 struct perf_evsel *pos; 1457 1458 evlist__for_each(session->evlist, pos) { 1459 if (pos->attr.type == type) 1460 return pos; 1461 } 1462 return NULL; 1463 } 1464 1465 void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample, 1466 struct addr_location *al, 1467 unsigned int print_opts, unsigned int stack_depth) 1468 { 1469 struct callchain_cursor_node *node; 1470 int print_ip = print_opts & PRINT_IP_OPT_IP; 1471 int print_sym = print_opts & PRINT_IP_OPT_SYM; 1472 int print_dso = print_opts & PRINT_IP_OPT_DSO; 1473 int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET; 1474 int print_oneline = print_opts & PRINT_IP_OPT_ONELINE; 1475 int print_srcline = print_opts & PRINT_IP_OPT_SRCLINE; 1476 char s = print_oneline ? ' ' : '\t'; 1477 1478 if (symbol_conf.use_callchain && sample->callchain) { 1479 struct addr_location node_al; 1480 1481 if (thread__resolve_callchain(al->thread, evsel, 1482 sample, NULL, NULL, 1483 PERF_MAX_STACK_DEPTH) != 0) { 1484 if (verbose) 1485 error("Failed to resolve callchain. Skipping\n"); 1486 return; 1487 } 1488 callchain_cursor_commit(&callchain_cursor); 1489 1490 if (print_symoffset) 1491 node_al = *al; 1492 1493 while (stack_depth) { 1494 u64 addr = 0; 1495 1496 node = callchain_cursor_current(&callchain_cursor); 1497 if (!node) 1498 break; 1499 1500 if (node->sym && node->sym->ignore) 1501 goto next; 1502 1503 if (print_ip) 1504 printf("%c%16" PRIx64, s, node->ip); 1505 1506 if (node->map) 1507 addr = node->map->map_ip(node->map, node->ip); 1508 1509 if (print_sym) { 1510 printf(" "); 1511 if (print_symoffset) { 1512 node_al.addr = addr; 1513 node_al.map = node->map; 1514 symbol__fprintf_symname_offs(node->sym, &node_al, stdout); 1515 } else 1516 symbol__fprintf_symname(node->sym, stdout); 1517 } 1518 1519 if (print_dso) { 1520 printf(" ("); 1521 map__fprintf_dsoname(node->map, stdout); 1522 printf(")"); 1523 } 1524 1525 if (print_srcline) 1526 map__fprintf_srcline(node->map, addr, "\n ", 1527 stdout); 1528 1529 if (!print_oneline) 1530 printf("\n"); 1531 1532 stack_depth--; 1533 next: 1534 callchain_cursor_advance(&callchain_cursor); 1535 } 1536 1537 } else { 1538 if (al->sym && al->sym->ignore) 1539 return; 1540 1541 if (print_ip) 1542 printf("%16" PRIx64, sample->ip); 1543 1544 if (print_sym) { 1545 printf(" "); 1546 if (print_symoffset) 1547 symbol__fprintf_symname_offs(al->sym, al, 1548 stdout); 1549 else 1550 symbol__fprintf_symname(al->sym, stdout); 1551 } 1552 1553 if (print_dso) { 1554 printf(" ("); 1555 map__fprintf_dsoname(al->map, stdout); 1556 printf(")"); 1557 } 1558 1559 if (print_srcline) 1560 map__fprintf_srcline(al->map, al->addr, "\n ", stdout); 1561 } 1562 } 1563 1564 int perf_session__cpu_bitmap(struct perf_session *session, 1565 const char *cpu_list, unsigned long *cpu_bitmap) 1566 { 1567 int i, err = -1; 1568 struct cpu_map *map; 1569 1570 for (i = 0; i < PERF_TYPE_MAX; ++i) { 1571 struct perf_evsel *evsel; 1572 1573 evsel = perf_session__find_first_evtype(session, i); 1574 if (!evsel) 1575 continue; 1576 1577 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { 1578 pr_err("File does not contain CPU events. " 1579 "Remove -c option to proceed.\n"); 1580 return -1; 1581 } 1582 } 1583 1584 map = cpu_map__new(cpu_list); 1585 if (map == NULL) { 1586 pr_err("Invalid cpu_list\n"); 1587 return -1; 1588 } 1589 1590 for (i = 0; i < map->nr; i++) { 1591 int cpu = map->map[i]; 1592 1593 if (cpu >= MAX_NR_CPUS) { 1594 pr_err("Requested CPU %d too large. " 1595 "Consider raising MAX_NR_CPUS\n", cpu); 1596 goto out_delete_map; 1597 } 1598 1599 set_bit(cpu, cpu_bitmap); 1600 } 1601 1602 err = 0; 1603 1604 out_delete_map: 1605 cpu_map__delete(map); 1606 return err; 1607 } 1608 1609 void perf_session__fprintf_info(struct perf_session *session, FILE *fp, 1610 bool full) 1611 { 1612 struct stat st; 1613 int fd, ret; 1614 1615 if (session == NULL || fp == NULL) 1616 return; 1617 1618 fd = perf_data_file__fd(session->file); 1619 1620 ret = fstat(fd, &st); 1621 if (ret == -1) 1622 return; 1623 1624 fprintf(fp, "# ========\n"); 1625 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); 1626 perf_header__fprintf_info(session, fp, full); 1627 fprintf(fp, "# ========\n#\n"); 1628 } 1629 1630 1631 int __perf_session__set_tracepoints_handlers(struct perf_session *session, 1632 const struct perf_evsel_str_handler *assocs, 1633 size_t nr_assocs) 1634 { 1635 struct perf_evsel *evsel; 1636 size_t i; 1637 int err; 1638 1639 for (i = 0; i < nr_assocs; i++) { 1640 /* 1641 * Adding a handler for an event not in the session, 1642 * just ignore it. 1643 */ 1644 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name); 1645 if (evsel == NULL) 1646 continue; 1647 1648 err = -EEXIST; 1649 if (evsel->handler != NULL) 1650 goto out; 1651 evsel->handler = assocs[i].handler; 1652 } 1653 1654 err = 0; 1655 out: 1656 return err; 1657 } 1658 1659 int perf_event__process_id_index(struct perf_tool *tool __maybe_unused, 1660 union perf_event *event, 1661 struct perf_session *session) 1662 { 1663 struct perf_evlist *evlist = session->evlist; 1664 struct id_index_event *ie = &event->id_index; 1665 size_t i, nr, max_nr; 1666 1667 max_nr = (ie->header.size - sizeof(struct id_index_event)) / 1668 sizeof(struct id_index_entry); 1669 nr = ie->nr; 1670 if (nr > max_nr) 1671 return -EINVAL; 1672 1673 if (dump_trace) 1674 fprintf(stdout, " nr: %zu\n", nr); 1675 1676 for (i = 0; i < nr; i++) { 1677 struct id_index_entry *e = &ie->entries[i]; 1678 struct perf_sample_id *sid; 1679 1680 if (dump_trace) { 1681 fprintf(stdout, " ... id: %"PRIu64, e->id); 1682 fprintf(stdout, " idx: %"PRIu64, e->idx); 1683 fprintf(stdout, " cpu: %"PRId64, e->cpu); 1684 fprintf(stdout, " tid: %"PRId64"\n", e->tid); 1685 } 1686 1687 sid = perf_evlist__id2sid(evlist, e->id); 1688 if (!sid) 1689 return -ENOENT; 1690 sid->idx = e->idx; 1691 sid->cpu = e->cpu; 1692 sid->tid = e->tid; 1693 } 1694 return 0; 1695 } 1696 1697 int perf_event__synthesize_id_index(struct perf_tool *tool, 1698 perf_event__handler_t process, 1699 struct perf_evlist *evlist, 1700 struct machine *machine) 1701 { 1702 union perf_event *ev; 1703 struct perf_evsel *evsel; 1704 size_t nr = 0, i = 0, sz, max_nr, n; 1705 int err; 1706 1707 pr_debug2("Synthesizing id index\n"); 1708 1709 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) / 1710 sizeof(struct id_index_entry); 1711 1712 evlist__for_each(evlist, evsel) 1713 nr += evsel->ids; 1714 1715 n = nr > max_nr ? max_nr : nr; 1716 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry); 1717 ev = zalloc(sz); 1718 if (!ev) 1719 return -ENOMEM; 1720 1721 ev->id_index.header.type = PERF_RECORD_ID_INDEX; 1722 ev->id_index.header.size = sz; 1723 ev->id_index.nr = n; 1724 1725 evlist__for_each(evlist, evsel) { 1726 u32 j; 1727 1728 for (j = 0; j < evsel->ids; j++) { 1729 struct id_index_entry *e; 1730 struct perf_sample_id *sid; 1731 1732 if (i >= n) { 1733 err = process(tool, ev, NULL, machine); 1734 if (err) 1735 goto out_err; 1736 nr -= n; 1737 i = 0; 1738 } 1739 1740 e = &ev->id_index.entries[i++]; 1741 1742 e->id = evsel->id[j]; 1743 1744 sid = perf_evlist__id2sid(evlist, e->id); 1745 if (!sid) { 1746 free(ev); 1747 return -ENOENT; 1748 } 1749 1750 e->idx = sid->idx; 1751 e->cpu = sid->cpu; 1752 e->tid = sid->tid; 1753 } 1754 } 1755 1756 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry); 1757 ev->id_index.header.size = sz; 1758 ev->id_index.nr = nr; 1759 1760 err = process(tool, ev, NULL, machine); 1761 out_err: 1762 free(ev); 1763 1764 return err; 1765 } 1766