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