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, event); 536 if (!new) { 537 ordered_events__flush(s, tool, OE_FLUSH__HALF); 538 new = ordered_events__new(oe, timestamp, event); 539 } 540 541 if (!new) 542 return -ENOMEM; 543 544 new->file_offset = file_offset; 545 return 0; 546 } 547 548 static void callchain__printf(struct perf_sample *sample) 549 { 550 unsigned int i; 551 552 printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr); 553 554 for (i = 0; i < sample->callchain->nr; i++) 555 printf("..... %2d: %016" PRIx64 "\n", 556 i, sample->callchain->ips[i]); 557 } 558 559 static void branch_stack__printf(struct perf_sample *sample) 560 { 561 uint64_t i; 562 563 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr); 564 565 for (i = 0; i < sample->branch_stack->nr; i++) 566 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 "\n", 567 i, sample->branch_stack->entries[i].from, 568 sample->branch_stack->entries[i].to); 569 } 570 571 static void regs_dump__printf(u64 mask, u64 *regs) 572 { 573 unsigned rid, i = 0; 574 575 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) { 576 u64 val = regs[i++]; 577 578 printf(".... %-5s 0x%" PRIx64 "\n", 579 perf_reg_name(rid), val); 580 } 581 } 582 583 static void regs_user__printf(struct perf_sample *sample) 584 { 585 struct regs_dump *user_regs = &sample->user_regs; 586 587 if (user_regs->regs) { 588 u64 mask = user_regs->mask; 589 printf("... user regs: mask 0x%" PRIx64 "\n", mask); 590 regs_dump__printf(mask, user_regs->regs); 591 } 592 } 593 594 static void stack_user__printf(struct stack_dump *dump) 595 { 596 printf("... ustack: size %" PRIu64 ", offset 0x%x\n", 597 dump->size, dump->offset); 598 } 599 600 static void perf_session__print_tstamp(struct perf_session *session, 601 union perf_event *event, 602 struct perf_sample *sample) 603 { 604 u64 sample_type = __perf_evlist__combined_sample_type(session->evlist); 605 606 if (event->header.type != PERF_RECORD_SAMPLE && 607 !perf_evlist__sample_id_all(session->evlist)) { 608 fputs("-1 -1 ", stdout); 609 return; 610 } 611 612 if ((sample_type & PERF_SAMPLE_CPU)) 613 printf("%u ", sample->cpu); 614 615 if (sample_type & PERF_SAMPLE_TIME) 616 printf("%" PRIu64 " ", sample->time); 617 } 618 619 static void sample_read__printf(struct perf_sample *sample, u64 read_format) 620 { 621 printf("... sample_read:\n"); 622 623 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 624 printf("...... time enabled %016" PRIx64 "\n", 625 sample->read.time_enabled); 626 627 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 628 printf("...... time running %016" PRIx64 "\n", 629 sample->read.time_running); 630 631 if (read_format & PERF_FORMAT_GROUP) { 632 u64 i; 633 634 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr); 635 636 for (i = 0; i < sample->read.group.nr; i++) { 637 struct sample_read_value *value; 638 639 value = &sample->read.group.values[i]; 640 printf("..... id %016" PRIx64 641 ", value %016" PRIx64 "\n", 642 value->id, value->value); 643 } 644 } else 645 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n", 646 sample->read.one.id, sample->read.one.value); 647 } 648 649 static void dump_event(struct perf_session *session, union perf_event *event, 650 u64 file_offset, struct perf_sample *sample) 651 { 652 if (!dump_trace) 653 return; 654 655 printf("\n%#" PRIx64 " [%#x]: event: %d\n", 656 file_offset, event->header.size, event->header.type); 657 658 trace_event(event); 659 660 if (sample) 661 perf_session__print_tstamp(session, event, sample); 662 663 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, 664 event->header.size, perf_event__name(event->header.type)); 665 } 666 667 static void dump_sample(struct perf_evsel *evsel, union perf_event *event, 668 struct perf_sample *sample) 669 { 670 u64 sample_type; 671 672 if (!dump_trace) 673 return; 674 675 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", 676 event->header.misc, sample->pid, sample->tid, sample->ip, 677 sample->period, sample->addr); 678 679 sample_type = evsel->attr.sample_type; 680 681 if (sample_type & PERF_SAMPLE_CALLCHAIN) 682 callchain__printf(sample); 683 684 if (sample_type & PERF_SAMPLE_BRANCH_STACK) 685 branch_stack__printf(sample); 686 687 if (sample_type & PERF_SAMPLE_REGS_USER) 688 regs_user__printf(sample); 689 690 if (sample_type & PERF_SAMPLE_STACK_USER) 691 stack_user__printf(&sample->user_stack); 692 693 if (sample_type & PERF_SAMPLE_WEIGHT) 694 printf("... weight: %" PRIu64 "\n", sample->weight); 695 696 if (sample_type & PERF_SAMPLE_DATA_SRC) 697 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src); 698 699 if (sample_type & PERF_SAMPLE_TRANSACTION) 700 printf("... transaction: %" PRIx64 "\n", sample->transaction); 701 702 if (sample_type & PERF_SAMPLE_READ) 703 sample_read__printf(sample, evsel->attr.read_format); 704 } 705 706 static struct machine * 707 perf_session__find_machine_for_cpumode(struct perf_session *session, 708 union perf_event *event, 709 struct perf_sample *sample) 710 { 711 const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; 712 struct machine *machine; 713 714 if (perf_guest && 715 ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || 716 (cpumode == PERF_RECORD_MISC_GUEST_USER))) { 717 u32 pid; 718 719 if (event->header.type == PERF_RECORD_MMAP 720 || event->header.type == PERF_RECORD_MMAP2) 721 pid = event->mmap.pid; 722 else 723 pid = sample->pid; 724 725 machine = perf_session__find_machine(session, pid); 726 if (!machine) 727 machine = perf_session__findnew_machine(session, 728 DEFAULT_GUEST_KERNEL_ID); 729 return machine; 730 } 731 732 return &session->machines.host; 733 } 734 735 static int deliver_sample_value(struct perf_session *session, 736 struct perf_tool *tool, 737 union perf_event *event, 738 struct perf_sample *sample, 739 struct sample_read_value *v, 740 struct machine *machine) 741 { 742 struct perf_sample_id *sid; 743 744 sid = perf_evlist__id2sid(session->evlist, v->id); 745 if (sid) { 746 sample->id = v->id; 747 sample->period = v->value - sid->period; 748 sid->period = v->value; 749 } 750 751 if (!sid || sid->evsel == NULL) { 752 ++session->stats.nr_unknown_id; 753 return 0; 754 } 755 756 return tool->sample(tool, event, sample, sid->evsel, machine); 757 } 758 759 static int deliver_sample_group(struct perf_session *session, 760 struct perf_tool *tool, 761 union perf_event *event, 762 struct perf_sample *sample, 763 struct machine *machine) 764 { 765 int ret = -EINVAL; 766 u64 i; 767 768 for (i = 0; i < sample->read.group.nr; i++) { 769 ret = deliver_sample_value(session, tool, event, sample, 770 &sample->read.group.values[i], 771 machine); 772 if (ret) 773 break; 774 } 775 776 return ret; 777 } 778 779 static int 780 perf_session__deliver_sample(struct perf_session *session, 781 struct perf_tool *tool, 782 union perf_event *event, 783 struct perf_sample *sample, 784 struct perf_evsel *evsel, 785 struct machine *machine) 786 { 787 /* We know evsel != NULL. */ 788 u64 sample_type = evsel->attr.sample_type; 789 u64 read_format = evsel->attr.read_format; 790 791 /* Standard sample delievery. */ 792 if (!(sample_type & PERF_SAMPLE_READ)) 793 return tool->sample(tool, event, sample, evsel, machine); 794 795 /* For PERF_SAMPLE_READ we have either single or group mode. */ 796 if (read_format & PERF_FORMAT_GROUP) 797 return deliver_sample_group(session, tool, event, sample, 798 machine); 799 else 800 return deliver_sample_value(session, tool, event, sample, 801 &sample->read.one, machine); 802 } 803 804 int perf_session__deliver_event(struct perf_session *session, 805 union perf_event *event, 806 struct perf_sample *sample, 807 struct perf_tool *tool, u64 file_offset) 808 { 809 struct perf_evsel *evsel; 810 struct machine *machine; 811 812 dump_event(session, event, file_offset, sample); 813 814 evsel = perf_evlist__id2evsel(session->evlist, sample->id); 815 816 machine = perf_session__find_machine_for_cpumode(session, event, 817 sample); 818 819 switch (event->header.type) { 820 case PERF_RECORD_SAMPLE: 821 dump_sample(evsel, event, sample); 822 if (evsel == NULL) { 823 ++session->stats.nr_unknown_id; 824 return 0; 825 } 826 if (machine == NULL) { 827 ++session->stats.nr_unprocessable_samples; 828 return 0; 829 } 830 return perf_session__deliver_sample(session, tool, event, 831 sample, evsel, machine); 832 case PERF_RECORD_MMAP: 833 return tool->mmap(tool, event, sample, machine); 834 case PERF_RECORD_MMAP2: 835 return tool->mmap2(tool, event, sample, machine); 836 case PERF_RECORD_COMM: 837 return tool->comm(tool, event, sample, machine); 838 case PERF_RECORD_FORK: 839 return tool->fork(tool, event, sample, machine); 840 case PERF_RECORD_EXIT: 841 return tool->exit(tool, event, sample, machine); 842 case PERF_RECORD_LOST: 843 if (tool->lost == perf_event__process_lost) 844 session->stats.total_lost += event->lost.lost; 845 return tool->lost(tool, event, sample, machine); 846 case PERF_RECORD_READ: 847 return tool->read(tool, event, sample, evsel, machine); 848 case PERF_RECORD_THROTTLE: 849 return tool->throttle(tool, event, sample, machine); 850 case PERF_RECORD_UNTHROTTLE: 851 return tool->unthrottle(tool, event, sample, machine); 852 default: 853 ++session->stats.nr_unknown_events; 854 return -1; 855 } 856 } 857 858 static s64 perf_session__process_user_event(struct perf_session *session, 859 union perf_event *event, 860 struct perf_tool *tool, 861 u64 file_offset) 862 { 863 int fd = perf_data_file__fd(session->file); 864 int err; 865 866 dump_event(session, event, file_offset, NULL); 867 868 /* These events are processed right away */ 869 switch (event->header.type) { 870 case PERF_RECORD_HEADER_ATTR: 871 err = tool->attr(tool, event, &session->evlist); 872 if (err == 0) { 873 perf_session__set_id_hdr_size(session); 874 perf_session__set_comm_exec(session); 875 } 876 return err; 877 case PERF_RECORD_HEADER_EVENT_TYPE: 878 /* 879 * Depreceated, but we need to handle it for sake 880 * of old data files create in pipe mode. 881 */ 882 return 0; 883 case PERF_RECORD_HEADER_TRACING_DATA: 884 /* setup for reading amidst mmap */ 885 lseek(fd, file_offset, SEEK_SET); 886 return tool->tracing_data(tool, event, session); 887 case PERF_RECORD_HEADER_BUILD_ID: 888 return tool->build_id(tool, event, session); 889 case PERF_RECORD_FINISHED_ROUND: 890 return tool->finished_round(tool, event, session); 891 default: 892 return -EINVAL; 893 } 894 } 895 896 static void event_swap(union perf_event *event, bool sample_id_all) 897 { 898 perf_event__swap_op swap; 899 900 swap = perf_event__swap_ops[event->header.type]; 901 if (swap) 902 swap(event, sample_id_all); 903 } 904 905 int perf_session__peek_event(struct perf_session *session, off_t file_offset, 906 void *buf, size_t buf_sz, 907 union perf_event **event_ptr, 908 struct perf_sample *sample) 909 { 910 union perf_event *event; 911 size_t hdr_sz, rest; 912 int fd; 913 914 if (session->one_mmap && !session->header.needs_swap) { 915 event = file_offset - session->one_mmap_offset + 916 session->one_mmap_addr; 917 goto out_parse_sample; 918 } 919 920 if (perf_data_file__is_pipe(session->file)) 921 return -1; 922 923 fd = perf_data_file__fd(session->file); 924 hdr_sz = sizeof(struct perf_event_header); 925 926 if (buf_sz < hdr_sz) 927 return -1; 928 929 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 || 930 readn(fd, &buf, hdr_sz) != (ssize_t)hdr_sz) 931 return -1; 932 933 event = (union perf_event *)buf; 934 935 if (session->header.needs_swap) 936 perf_event_header__bswap(&event->header); 937 938 if (event->header.size < hdr_sz) 939 return -1; 940 941 rest = event->header.size - hdr_sz; 942 943 if (readn(fd, &buf, rest) != (ssize_t)rest) 944 return -1; 945 946 if (session->header.needs_swap) 947 event_swap(event, perf_evlist__sample_id_all(session->evlist)); 948 949 out_parse_sample: 950 951 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START && 952 perf_evlist__parse_sample(session->evlist, event, sample)) 953 return -1; 954 955 *event_ptr = event; 956 957 return 0; 958 } 959 960 static s64 perf_session__process_event(struct perf_session *session, 961 union perf_event *event, 962 struct perf_tool *tool, 963 u64 file_offset) 964 { 965 struct perf_sample sample; 966 int ret; 967 968 if (session->header.needs_swap) 969 event_swap(event, perf_evlist__sample_id_all(session->evlist)); 970 971 if (event->header.type >= PERF_RECORD_HEADER_MAX) 972 return -EINVAL; 973 974 events_stats__inc(&session->stats, event->header.type); 975 976 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 977 return perf_session__process_user_event(session, event, tool, file_offset); 978 979 /* 980 * For all kernel events we get the sample data 981 */ 982 ret = perf_evlist__parse_sample(session->evlist, event, &sample); 983 if (ret) 984 return ret; 985 986 if (tool->ordered_events) { 987 ret = perf_session_queue_event(session, event, tool, &sample, 988 file_offset); 989 if (ret != -ETIME) 990 return ret; 991 } 992 993 return perf_session__deliver_event(session, event, &sample, tool, 994 file_offset); 995 } 996 997 void perf_event_header__bswap(struct perf_event_header *hdr) 998 { 999 hdr->type = bswap_32(hdr->type); 1000 hdr->misc = bswap_16(hdr->misc); 1001 hdr->size = bswap_16(hdr->size); 1002 } 1003 1004 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) 1005 { 1006 return machine__findnew_thread(&session->machines.host, -1, pid); 1007 } 1008 1009 static struct thread *perf_session__register_idle_thread(struct perf_session *session) 1010 { 1011 struct thread *thread; 1012 1013 thread = machine__findnew_thread(&session->machines.host, 0, 0); 1014 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) { 1015 pr_err("problem inserting idle task.\n"); 1016 thread = NULL; 1017 } 1018 1019 return thread; 1020 } 1021 1022 static void perf_session__warn_about_errors(const struct perf_session *session, 1023 const struct perf_tool *tool) 1024 { 1025 if (tool->lost == perf_event__process_lost && 1026 session->stats.nr_events[PERF_RECORD_LOST] != 0) { 1027 ui__warning("Processed %d events and lost %d chunks!\n\n" 1028 "Check IO/CPU overload!\n\n", 1029 session->stats.nr_events[0], 1030 session->stats.nr_events[PERF_RECORD_LOST]); 1031 } 1032 1033 if (session->stats.nr_unknown_events != 0) { 1034 ui__warning("Found %u unknown events!\n\n" 1035 "Is this an older tool processing a perf.data " 1036 "file generated by a more recent tool?\n\n" 1037 "If that is not the case, consider " 1038 "reporting to linux-kernel@vger.kernel.org.\n\n", 1039 session->stats.nr_unknown_events); 1040 } 1041 1042 if (session->stats.nr_unknown_id != 0) { 1043 ui__warning("%u samples with id not present in the header\n", 1044 session->stats.nr_unknown_id); 1045 } 1046 1047 if (session->stats.nr_invalid_chains != 0) { 1048 ui__warning("Found invalid callchains!\n\n" 1049 "%u out of %u events were discarded for this reason.\n\n" 1050 "Consider reporting to linux-kernel@vger.kernel.org.\n\n", 1051 session->stats.nr_invalid_chains, 1052 session->stats.nr_events[PERF_RECORD_SAMPLE]); 1053 } 1054 1055 if (session->stats.nr_unprocessable_samples != 0) { 1056 ui__warning("%u unprocessable samples recorded.\n" 1057 "Do you have a KVM guest running and not using 'perf kvm'?\n", 1058 session->stats.nr_unprocessable_samples); 1059 } 1060 } 1061 1062 volatile int session_done; 1063 1064 static int __perf_session__process_pipe_events(struct perf_session *session, 1065 struct perf_tool *tool) 1066 { 1067 int fd = perf_data_file__fd(session->file); 1068 union perf_event *event; 1069 uint32_t size, cur_size = 0; 1070 void *buf = NULL; 1071 s64 skip = 0; 1072 u64 head; 1073 ssize_t err; 1074 void *p; 1075 1076 perf_tool__fill_defaults(tool); 1077 1078 head = 0; 1079 cur_size = sizeof(union perf_event); 1080 1081 buf = malloc(cur_size); 1082 if (!buf) 1083 return -errno; 1084 more: 1085 event = buf; 1086 err = readn(fd, event, sizeof(struct perf_event_header)); 1087 if (err <= 0) { 1088 if (err == 0) 1089 goto done; 1090 1091 pr_err("failed to read event header\n"); 1092 goto out_err; 1093 } 1094 1095 if (session->header.needs_swap) 1096 perf_event_header__bswap(&event->header); 1097 1098 size = event->header.size; 1099 if (size < sizeof(struct perf_event_header)) { 1100 pr_err("bad event header size\n"); 1101 goto out_err; 1102 } 1103 1104 if (size > cur_size) { 1105 void *new = realloc(buf, size); 1106 if (!new) { 1107 pr_err("failed to allocate memory to read event\n"); 1108 goto out_err; 1109 } 1110 buf = new; 1111 cur_size = size; 1112 event = buf; 1113 } 1114 p = event; 1115 p += sizeof(struct perf_event_header); 1116 1117 if (size - sizeof(struct perf_event_header)) { 1118 err = readn(fd, p, size - sizeof(struct perf_event_header)); 1119 if (err <= 0) { 1120 if (err == 0) { 1121 pr_err("unexpected end of event stream\n"); 1122 goto done; 1123 } 1124 1125 pr_err("failed to read event data\n"); 1126 goto out_err; 1127 } 1128 } 1129 1130 if ((skip = perf_session__process_event(session, event, tool, head)) < 0) { 1131 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1132 head, event->header.size, event->header.type); 1133 err = -EINVAL; 1134 goto out_err; 1135 } 1136 1137 head += size; 1138 1139 if (skip > 0) 1140 head += skip; 1141 1142 if (!session_done()) 1143 goto more; 1144 done: 1145 /* do the final flush for ordered samples */ 1146 err = ordered_events__flush(session, tool, OE_FLUSH__FINAL); 1147 out_err: 1148 free(buf); 1149 perf_session__warn_about_errors(session, tool); 1150 ordered_events__free(&session->ordered_events); 1151 return err; 1152 } 1153 1154 static union perf_event * 1155 fetch_mmaped_event(struct perf_session *session, 1156 u64 head, size_t mmap_size, char *buf) 1157 { 1158 union perf_event *event; 1159 1160 /* 1161 * Ensure we have enough space remaining to read 1162 * the size of the event in the headers. 1163 */ 1164 if (head + sizeof(event->header) > mmap_size) 1165 return NULL; 1166 1167 event = (union perf_event *)(buf + head); 1168 1169 if (session->header.needs_swap) 1170 perf_event_header__bswap(&event->header); 1171 1172 if (head + event->header.size > mmap_size) { 1173 /* We're not fetching the event so swap back again */ 1174 if (session->header.needs_swap) 1175 perf_event_header__bswap(&event->header); 1176 return NULL; 1177 } 1178 1179 return event; 1180 } 1181 1182 /* 1183 * On 64bit we can mmap the data file in one go. No need for tiny mmap 1184 * slices. On 32bit we use 32MB. 1185 */ 1186 #if BITS_PER_LONG == 64 1187 #define MMAP_SIZE ULLONG_MAX 1188 #define NUM_MMAPS 1 1189 #else 1190 #define MMAP_SIZE (32 * 1024 * 1024ULL) 1191 #define NUM_MMAPS 128 1192 #endif 1193 1194 int __perf_session__process_events(struct perf_session *session, 1195 u64 data_offset, u64 data_size, 1196 u64 file_size, struct perf_tool *tool) 1197 { 1198 int fd = perf_data_file__fd(session->file); 1199 u64 head, page_offset, file_offset, file_pos, size; 1200 int err, mmap_prot, mmap_flags, map_idx = 0; 1201 size_t mmap_size; 1202 char *buf, *mmaps[NUM_MMAPS]; 1203 union perf_event *event; 1204 struct ui_progress prog; 1205 s64 skip; 1206 1207 perf_tool__fill_defaults(tool); 1208 1209 page_offset = page_size * (data_offset / page_size); 1210 file_offset = page_offset; 1211 head = data_offset - page_offset; 1212 1213 if (data_size && (data_offset + data_size < file_size)) 1214 file_size = data_offset + data_size; 1215 1216 ui_progress__init(&prog, file_size, "Processing events..."); 1217 1218 mmap_size = MMAP_SIZE; 1219 if (mmap_size > file_size) { 1220 mmap_size = file_size; 1221 session->one_mmap = true; 1222 } 1223 1224 memset(mmaps, 0, sizeof(mmaps)); 1225 1226 mmap_prot = PROT_READ; 1227 mmap_flags = MAP_SHARED; 1228 1229 if (session->header.needs_swap) { 1230 mmap_prot |= PROT_WRITE; 1231 mmap_flags = MAP_PRIVATE; 1232 } 1233 remap: 1234 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd, 1235 file_offset); 1236 if (buf == MAP_FAILED) { 1237 pr_err("failed to mmap file\n"); 1238 err = -errno; 1239 goto out_err; 1240 } 1241 mmaps[map_idx] = buf; 1242 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); 1243 file_pos = file_offset + head; 1244 if (session->one_mmap) { 1245 session->one_mmap_addr = buf; 1246 session->one_mmap_offset = file_offset; 1247 } 1248 1249 more: 1250 event = fetch_mmaped_event(session, head, mmap_size, buf); 1251 if (!event) { 1252 if (mmaps[map_idx]) { 1253 munmap(mmaps[map_idx], mmap_size); 1254 mmaps[map_idx] = NULL; 1255 } 1256 1257 page_offset = page_size * (head / page_size); 1258 file_offset += page_offset; 1259 head -= page_offset; 1260 goto remap; 1261 } 1262 1263 size = event->header.size; 1264 1265 if (size < sizeof(struct perf_event_header) || 1266 (skip = perf_session__process_event(session, event, tool, file_pos)) 1267 < 0) { 1268 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1269 file_offset + head, event->header.size, 1270 event->header.type); 1271 err = -EINVAL; 1272 goto out_err; 1273 } 1274 1275 if (skip) 1276 size += skip; 1277 1278 head += size; 1279 file_pos += size; 1280 1281 ui_progress__update(&prog, size); 1282 1283 if (session_done()) 1284 goto out; 1285 1286 if (file_pos < file_size) 1287 goto more; 1288 1289 out: 1290 /* do the final flush for ordered samples */ 1291 err = ordered_events__flush(session, tool, OE_FLUSH__FINAL); 1292 out_err: 1293 ui_progress__finish(); 1294 perf_session__warn_about_errors(session, tool); 1295 ordered_events__free(&session->ordered_events); 1296 session->one_mmap = false; 1297 return err; 1298 } 1299 1300 int perf_session__process_events(struct perf_session *session, 1301 struct perf_tool *tool) 1302 { 1303 u64 size = perf_data_file__size(session->file); 1304 int err; 1305 1306 if (perf_session__register_idle_thread(session) == NULL) 1307 return -ENOMEM; 1308 1309 if (!perf_data_file__is_pipe(session->file)) 1310 err = __perf_session__process_events(session, 1311 session->header.data_offset, 1312 session->header.data_size, 1313 size, tool); 1314 else 1315 err = __perf_session__process_pipe_events(session, tool); 1316 1317 return err; 1318 } 1319 1320 bool perf_session__has_traces(struct perf_session *session, const char *msg) 1321 { 1322 struct perf_evsel *evsel; 1323 1324 evlist__for_each(session->evlist, evsel) { 1325 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) 1326 return true; 1327 } 1328 1329 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); 1330 return false; 1331 } 1332 1333 int maps__set_kallsyms_ref_reloc_sym(struct map **maps, 1334 const char *symbol_name, u64 addr) 1335 { 1336 char *bracket; 1337 enum map_type i; 1338 struct ref_reloc_sym *ref; 1339 1340 ref = zalloc(sizeof(struct ref_reloc_sym)); 1341 if (ref == NULL) 1342 return -ENOMEM; 1343 1344 ref->name = strdup(symbol_name); 1345 if (ref->name == NULL) { 1346 free(ref); 1347 return -ENOMEM; 1348 } 1349 1350 bracket = strchr(ref->name, ']'); 1351 if (bracket) 1352 *bracket = '\0'; 1353 1354 ref->addr = addr; 1355 1356 for (i = 0; i < MAP__NR_TYPES; ++i) { 1357 struct kmap *kmap = map__kmap(maps[i]); 1358 kmap->ref_reloc_sym = ref; 1359 } 1360 1361 return 0; 1362 } 1363 1364 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp) 1365 { 1366 return machines__fprintf_dsos(&session->machines, fp); 1367 } 1368 1369 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp, 1370 bool (skip)(struct dso *dso, int parm), int parm) 1371 { 1372 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm); 1373 } 1374 1375 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) 1376 { 1377 size_t ret = fprintf(fp, "Aggregated stats:\n"); 1378 1379 ret += events_stats__fprintf(&session->stats, fp); 1380 return ret; 1381 } 1382 1383 size_t perf_session__fprintf(struct perf_session *session, FILE *fp) 1384 { 1385 /* 1386 * FIXME: Here we have to actually print all the machines in this 1387 * session, not just the host... 1388 */ 1389 return machine__fprintf(&session->machines.host, fp); 1390 } 1391 1392 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, 1393 unsigned int type) 1394 { 1395 struct perf_evsel *pos; 1396 1397 evlist__for_each(session->evlist, pos) { 1398 if (pos->attr.type == type) 1399 return pos; 1400 } 1401 return NULL; 1402 } 1403 1404 void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample, 1405 struct addr_location *al, 1406 unsigned int print_opts, unsigned int stack_depth) 1407 { 1408 struct callchain_cursor_node *node; 1409 int print_ip = print_opts & PRINT_IP_OPT_IP; 1410 int print_sym = print_opts & PRINT_IP_OPT_SYM; 1411 int print_dso = print_opts & PRINT_IP_OPT_DSO; 1412 int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET; 1413 int print_oneline = print_opts & PRINT_IP_OPT_ONELINE; 1414 int print_srcline = print_opts & PRINT_IP_OPT_SRCLINE; 1415 char s = print_oneline ? ' ' : '\t'; 1416 1417 if (symbol_conf.use_callchain && sample->callchain) { 1418 struct addr_location node_al; 1419 1420 if (machine__resolve_callchain(al->machine, evsel, al->thread, 1421 sample, NULL, NULL, 1422 PERF_MAX_STACK_DEPTH) != 0) { 1423 if (verbose) 1424 error("Failed to resolve callchain. Skipping\n"); 1425 return; 1426 } 1427 callchain_cursor_commit(&callchain_cursor); 1428 1429 if (print_symoffset) 1430 node_al = *al; 1431 1432 while (stack_depth) { 1433 u64 addr = 0; 1434 1435 node = callchain_cursor_current(&callchain_cursor); 1436 if (!node) 1437 break; 1438 1439 if (node->sym && node->sym->ignore) 1440 goto next; 1441 1442 if (print_ip) 1443 printf("%c%16" PRIx64, s, node->ip); 1444 1445 if (node->map) 1446 addr = node->map->map_ip(node->map, node->ip); 1447 1448 if (print_sym) { 1449 printf(" "); 1450 if (print_symoffset) { 1451 node_al.addr = addr; 1452 node_al.map = node->map; 1453 symbol__fprintf_symname_offs(node->sym, &node_al, stdout); 1454 } else 1455 symbol__fprintf_symname(node->sym, stdout); 1456 } 1457 1458 if (print_dso) { 1459 printf(" ("); 1460 map__fprintf_dsoname(node->map, stdout); 1461 printf(")"); 1462 } 1463 1464 if (print_srcline) 1465 map__fprintf_srcline(node->map, addr, "\n ", 1466 stdout); 1467 1468 if (!print_oneline) 1469 printf("\n"); 1470 1471 stack_depth--; 1472 next: 1473 callchain_cursor_advance(&callchain_cursor); 1474 } 1475 1476 } else { 1477 if (al->sym && al->sym->ignore) 1478 return; 1479 1480 if (print_ip) 1481 printf("%16" PRIx64, sample->ip); 1482 1483 if (print_sym) { 1484 printf(" "); 1485 if (print_symoffset) 1486 symbol__fprintf_symname_offs(al->sym, al, 1487 stdout); 1488 else 1489 symbol__fprintf_symname(al->sym, stdout); 1490 } 1491 1492 if (print_dso) { 1493 printf(" ("); 1494 map__fprintf_dsoname(al->map, stdout); 1495 printf(")"); 1496 } 1497 1498 if (print_srcline) 1499 map__fprintf_srcline(al->map, al->addr, "\n ", stdout); 1500 } 1501 } 1502 1503 int perf_session__cpu_bitmap(struct perf_session *session, 1504 const char *cpu_list, unsigned long *cpu_bitmap) 1505 { 1506 int i, err = -1; 1507 struct cpu_map *map; 1508 1509 for (i = 0; i < PERF_TYPE_MAX; ++i) { 1510 struct perf_evsel *evsel; 1511 1512 evsel = perf_session__find_first_evtype(session, i); 1513 if (!evsel) 1514 continue; 1515 1516 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { 1517 pr_err("File does not contain CPU events. " 1518 "Remove -c option to proceed.\n"); 1519 return -1; 1520 } 1521 } 1522 1523 map = cpu_map__new(cpu_list); 1524 if (map == NULL) { 1525 pr_err("Invalid cpu_list\n"); 1526 return -1; 1527 } 1528 1529 for (i = 0; i < map->nr; i++) { 1530 int cpu = map->map[i]; 1531 1532 if (cpu >= MAX_NR_CPUS) { 1533 pr_err("Requested CPU %d too large. " 1534 "Consider raising MAX_NR_CPUS\n", cpu); 1535 goto out_delete_map; 1536 } 1537 1538 set_bit(cpu, cpu_bitmap); 1539 } 1540 1541 err = 0; 1542 1543 out_delete_map: 1544 cpu_map__delete(map); 1545 return err; 1546 } 1547 1548 void perf_session__fprintf_info(struct perf_session *session, FILE *fp, 1549 bool full) 1550 { 1551 struct stat st; 1552 int fd, ret; 1553 1554 if (session == NULL || fp == NULL) 1555 return; 1556 1557 fd = perf_data_file__fd(session->file); 1558 1559 ret = fstat(fd, &st); 1560 if (ret == -1) 1561 return; 1562 1563 fprintf(fp, "# ========\n"); 1564 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); 1565 perf_header__fprintf_info(session, fp, full); 1566 fprintf(fp, "# ========\n#\n"); 1567 } 1568 1569 1570 int __perf_session__set_tracepoints_handlers(struct perf_session *session, 1571 const struct perf_evsel_str_handler *assocs, 1572 size_t nr_assocs) 1573 { 1574 struct perf_evsel *evsel; 1575 size_t i; 1576 int err; 1577 1578 for (i = 0; i < nr_assocs; i++) { 1579 /* 1580 * Adding a handler for an event not in the session, 1581 * just ignore it. 1582 */ 1583 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name); 1584 if (evsel == NULL) 1585 continue; 1586 1587 err = -EEXIST; 1588 if (evsel->handler != NULL) 1589 goto out; 1590 evsel->handler = assocs[i].handler; 1591 } 1592 1593 err = 0; 1594 out: 1595 return err; 1596 } 1597