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 pr_oe_time(timestamp, "out of order event\n"); 525 pr_oe_time(oe->last_flush, "last flush, last_flush_type %d\n", 526 oe->last_flush_type); 527 528 s->stats.nr_unordered_events++; 529 } 530 531 new = ordered_events__new(oe, timestamp, event); 532 if (!new) { 533 ordered_events__flush(s, tool, OE_FLUSH__HALF); 534 new = ordered_events__new(oe, timestamp, event); 535 } 536 537 if (!new) 538 return -ENOMEM; 539 540 new->file_offset = file_offset; 541 return 0; 542 } 543 544 static void callchain__printf(struct perf_sample *sample) 545 { 546 unsigned int i; 547 548 printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr); 549 550 for (i = 0; i < sample->callchain->nr; i++) 551 printf("..... %2d: %016" PRIx64 "\n", 552 i, sample->callchain->ips[i]); 553 } 554 555 static void branch_stack__printf(struct perf_sample *sample) 556 { 557 uint64_t i; 558 559 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr); 560 561 for (i = 0; i < sample->branch_stack->nr; i++) 562 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 "\n", 563 i, sample->branch_stack->entries[i].from, 564 sample->branch_stack->entries[i].to); 565 } 566 567 static void regs_dump__printf(u64 mask, u64 *regs) 568 { 569 unsigned rid, i = 0; 570 571 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) { 572 u64 val = regs[i++]; 573 574 printf(".... %-5s 0x%" PRIx64 "\n", 575 perf_reg_name(rid), val); 576 } 577 } 578 579 static void regs_user__printf(struct perf_sample *sample) 580 { 581 struct regs_dump *user_regs = &sample->user_regs; 582 583 if (user_regs->regs) { 584 u64 mask = user_regs->mask; 585 printf("... user regs: mask 0x%" PRIx64 "\n", mask); 586 regs_dump__printf(mask, user_regs->regs); 587 } 588 } 589 590 static void stack_user__printf(struct stack_dump *dump) 591 { 592 printf("... ustack: size %" PRIu64 ", offset 0x%x\n", 593 dump->size, dump->offset); 594 } 595 596 static void perf_session__print_tstamp(struct perf_session *session, 597 union perf_event *event, 598 struct perf_sample *sample) 599 { 600 u64 sample_type = __perf_evlist__combined_sample_type(session->evlist); 601 602 if (event->header.type != PERF_RECORD_SAMPLE && 603 !perf_evlist__sample_id_all(session->evlist)) { 604 fputs("-1 -1 ", stdout); 605 return; 606 } 607 608 if ((sample_type & PERF_SAMPLE_CPU)) 609 printf("%u ", sample->cpu); 610 611 if (sample_type & PERF_SAMPLE_TIME) 612 printf("%" PRIu64 " ", sample->time); 613 } 614 615 static void sample_read__printf(struct perf_sample *sample, u64 read_format) 616 { 617 printf("... sample_read:\n"); 618 619 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) 620 printf("...... time enabled %016" PRIx64 "\n", 621 sample->read.time_enabled); 622 623 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) 624 printf("...... time running %016" PRIx64 "\n", 625 sample->read.time_running); 626 627 if (read_format & PERF_FORMAT_GROUP) { 628 u64 i; 629 630 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr); 631 632 for (i = 0; i < sample->read.group.nr; i++) { 633 struct sample_read_value *value; 634 635 value = &sample->read.group.values[i]; 636 printf("..... id %016" PRIx64 637 ", value %016" PRIx64 "\n", 638 value->id, value->value); 639 } 640 } else 641 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n", 642 sample->read.one.id, sample->read.one.value); 643 } 644 645 static void dump_event(struct perf_session *session, union perf_event *event, 646 u64 file_offset, struct perf_sample *sample) 647 { 648 if (!dump_trace) 649 return; 650 651 printf("\n%#" PRIx64 " [%#x]: event: %d\n", 652 file_offset, event->header.size, event->header.type); 653 654 trace_event(event); 655 656 if (sample) 657 perf_session__print_tstamp(session, event, sample); 658 659 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, 660 event->header.size, perf_event__name(event->header.type)); 661 } 662 663 static void dump_sample(struct perf_evsel *evsel, union perf_event *event, 664 struct perf_sample *sample) 665 { 666 u64 sample_type; 667 668 if (!dump_trace) 669 return; 670 671 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", 672 event->header.misc, sample->pid, sample->tid, sample->ip, 673 sample->period, sample->addr); 674 675 sample_type = evsel->attr.sample_type; 676 677 if (sample_type & PERF_SAMPLE_CALLCHAIN) 678 callchain__printf(sample); 679 680 if (sample_type & PERF_SAMPLE_BRANCH_STACK) 681 branch_stack__printf(sample); 682 683 if (sample_type & PERF_SAMPLE_REGS_USER) 684 regs_user__printf(sample); 685 686 if (sample_type & PERF_SAMPLE_STACK_USER) 687 stack_user__printf(&sample->user_stack); 688 689 if (sample_type & PERF_SAMPLE_WEIGHT) 690 printf("... weight: %" PRIu64 "\n", sample->weight); 691 692 if (sample_type & PERF_SAMPLE_DATA_SRC) 693 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src); 694 695 if (sample_type & PERF_SAMPLE_TRANSACTION) 696 printf("... transaction: %" PRIx64 "\n", sample->transaction); 697 698 if (sample_type & PERF_SAMPLE_READ) 699 sample_read__printf(sample, evsel->attr.read_format); 700 } 701 702 static struct machine * 703 perf_session__find_machine_for_cpumode(struct perf_session *session, 704 union perf_event *event, 705 struct perf_sample *sample) 706 { 707 const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; 708 struct machine *machine; 709 710 if (perf_guest && 711 ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || 712 (cpumode == PERF_RECORD_MISC_GUEST_USER))) { 713 u32 pid; 714 715 if (event->header.type == PERF_RECORD_MMAP 716 || event->header.type == PERF_RECORD_MMAP2) 717 pid = event->mmap.pid; 718 else 719 pid = sample->pid; 720 721 machine = perf_session__find_machine(session, pid); 722 if (!machine) 723 machine = perf_session__findnew_machine(session, 724 DEFAULT_GUEST_KERNEL_ID); 725 return machine; 726 } 727 728 return &session->machines.host; 729 } 730 731 static int deliver_sample_value(struct perf_session *session, 732 struct perf_tool *tool, 733 union perf_event *event, 734 struct perf_sample *sample, 735 struct sample_read_value *v, 736 struct machine *machine) 737 { 738 struct perf_sample_id *sid; 739 740 sid = perf_evlist__id2sid(session->evlist, v->id); 741 if (sid) { 742 sample->id = v->id; 743 sample->period = v->value - sid->period; 744 sid->period = v->value; 745 } 746 747 if (!sid || sid->evsel == NULL) { 748 ++session->stats.nr_unknown_id; 749 return 0; 750 } 751 752 return tool->sample(tool, event, sample, sid->evsel, machine); 753 } 754 755 static int deliver_sample_group(struct perf_session *session, 756 struct perf_tool *tool, 757 union perf_event *event, 758 struct perf_sample *sample, 759 struct machine *machine) 760 { 761 int ret = -EINVAL; 762 u64 i; 763 764 for (i = 0; i < sample->read.group.nr; i++) { 765 ret = deliver_sample_value(session, tool, event, sample, 766 &sample->read.group.values[i], 767 machine); 768 if (ret) 769 break; 770 } 771 772 return ret; 773 } 774 775 static int 776 perf_session__deliver_sample(struct perf_session *session, 777 struct perf_tool *tool, 778 union perf_event *event, 779 struct perf_sample *sample, 780 struct perf_evsel *evsel, 781 struct machine *machine) 782 { 783 /* We know evsel != NULL. */ 784 u64 sample_type = evsel->attr.sample_type; 785 u64 read_format = evsel->attr.read_format; 786 787 /* Standard sample delievery. */ 788 if (!(sample_type & PERF_SAMPLE_READ)) 789 return tool->sample(tool, event, sample, evsel, machine); 790 791 /* For PERF_SAMPLE_READ we have either single or group mode. */ 792 if (read_format & PERF_FORMAT_GROUP) 793 return deliver_sample_group(session, tool, event, sample, 794 machine); 795 else 796 return deliver_sample_value(session, tool, event, sample, 797 &sample->read.one, machine); 798 } 799 800 int perf_session__deliver_event(struct perf_session *session, 801 union perf_event *event, 802 struct perf_sample *sample, 803 struct perf_tool *tool, u64 file_offset) 804 { 805 struct perf_evsel *evsel; 806 struct machine *machine; 807 808 dump_event(session, event, file_offset, sample); 809 810 evsel = perf_evlist__id2evsel(session->evlist, sample->id); 811 812 machine = perf_session__find_machine_for_cpumode(session, event, 813 sample); 814 815 switch (event->header.type) { 816 case PERF_RECORD_SAMPLE: 817 dump_sample(evsel, event, sample); 818 if (evsel == NULL) { 819 ++session->stats.nr_unknown_id; 820 return 0; 821 } 822 if (machine == NULL) { 823 ++session->stats.nr_unprocessable_samples; 824 return 0; 825 } 826 return perf_session__deliver_sample(session, tool, event, 827 sample, evsel, machine); 828 case PERF_RECORD_MMAP: 829 return tool->mmap(tool, event, sample, machine); 830 case PERF_RECORD_MMAP2: 831 return tool->mmap2(tool, event, sample, machine); 832 case PERF_RECORD_COMM: 833 return tool->comm(tool, event, sample, machine); 834 case PERF_RECORD_FORK: 835 return tool->fork(tool, event, sample, machine); 836 case PERF_RECORD_EXIT: 837 return tool->exit(tool, event, sample, machine); 838 case PERF_RECORD_LOST: 839 if (tool->lost == perf_event__process_lost) 840 session->stats.total_lost += event->lost.lost; 841 return tool->lost(tool, event, sample, machine); 842 case PERF_RECORD_READ: 843 return tool->read(tool, event, sample, evsel, machine); 844 case PERF_RECORD_THROTTLE: 845 return tool->throttle(tool, event, sample, machine); 846 case PERF_RECORD_UNTHROTTLE: 847 return tool->unthrottle(tool, event, sample, machine); 848 default: 849 ++session->stats.nr_unknown_events; 850 return -1; 851 } 852 } 853 854 static s64 perf_session__process_user_event(struct perf_session *session, 855 union perf_event *event, 856 struct perf_tool *tool, 857 u64 file_offset) 858 { 859 int fd = perf_data_file__fd(session->file); 860 int err; 861 862 dump_event(session, event, file_offset, NULL); 863 864 /* These events are processed right away */ 865 switch (event->header.type) { 866 case PERF_RECORD_HEADER_ATTR: 867 err = tool->attr(tool, event, &session->evlist); 868 if (err == 0) { 869 perf_session__set_id_hdr_size(session); 870 perf_session__set_comm_exec(session); 871 } 872 return err; 873 case PERF_RECORD_HEADER_EVENT_TYPE: 874 /* 875 * Depreceated, but we need to handle it for sake 876 * of old data files create in pipe mode. 877 */ 878 return 0; 879 case PERF_RECORD_HEADER_TRACING_DATA: 880 /* setup for reading amidst mmap */ 881 lseek(fd, file_offset, SEEK_SET); 882 return tool->tracing_data(tool, event, session); 883 case PERF_RECORD_HEADER_BUILD_ID: 884 return tool->build_id(tool, event, session); 885 case PERF_RECORD_FINISHED_ROUND: 886 return tool->finished_round(tool, event, session); 887 default: 888 return -EINVAL; 889 } 890 } 891 892 static void event_swap(union perf_event *event, bool sample_id_all) 893 { 894 perf_event__swap_op swap; 895 896 swap = perf_event__swap_ops[event->header.type]; 897 if (swap) 898 swap(event, sample_id_all); 899 } 900 901 int perf_session__peek_event(struct perf_session *session, off_t file_offset, 902 void *buf, size_t buf_sz, 903 union perf_event **event_ptr, 904 struct perf_sample *sample) 905 { 906 union perf_event *event; 907 size_t hdr_sz, rest; 908 int fd; 909 910 if (session->one_mmap && !session->header.needs_swap) { 911 event = file_offset - session->one_mmap_offset + 912 session->one_mmap_addr; 913 goto out_parse_sample; 914 } 915 916 if (perf_data_file__is_pipe(session->file)) 917 return -1; 918 919 fd = perf_data_file__fd(session->file); 920 hdr_sz = sizeof(struct perf_event_header); 921 922 if (buf_sz < hdr_sz) 923 return -1; 924 925 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 || 926 readn(fd, &buf, hdr_sz) != (ssize_t)hdr_sz) 927 return -1; 928 929 event = (union perf_event *)buf; 930 931 if (session->header.needs_swap) 932 perf_event_header__bswap(&event->header); 933 934 if (event->header.size < hdr_sz) 935 return -1; 936 937 rest = event->header.size - hdr_sz; 938 939 if (readn(fd, &buf, rest) != (ssize_t)rest) 940 return -1; 941 942 if (session->header.needs_swap) 943 event_swap(event, perf_evlist__sample_id_all(session->evlist)); 944 945 out_parse_sample: 946 947 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START && 948 perf_evlist__parse_sample(session->evlist, event, sample)) 949 return -1; 950 951 *event_ptr = event; 952 953 return 0; 954 } 955 956 static s64 perf_session__process_event(struct perf_session *session, 957 union perf_event *event, 958 struct perf_tool *tool, 959 u64 file_offset) 960 { 961 struct perf_sample sample; 962 int ret; 963 964 if (session->header.needs_swap) 965 event_swap(event, perf_evlist__sample_id_all(session->evlist)); 966 967 if (event->header.type >= PERF_RECORD_HEADER_MAX) 968 return -EINVAL; 969 970 events_stats__inc(&session->stats, event->header.type); 971 972 if (event->header.type >= PERF_RECORD_USER_TYPE_START) 973 return perf_session__process_user_event(session, event, tool, file_offset); 974 975 /* 976 * For all kernel events we get the sample data 977 */ 978 ret = perf_evlist__parse_sample(session->evlist, event, &sample); 979 if (ret) 980 return ret; 981 982 if (tool->ordered_events) { 983 ret = perf_session_queue_event(session, event, tool, &sample, 984 file_offset); 985 if (ret != -ETIME) 986 return ret; 987 } 988 989 return perf_session__deliver_event(session, event, &sample, tool, 990 file_offset); 991 } 992 993 void perf_event_header__bswap(struct perf_event_header *hdr) 994 { 995 hdr->type = bswap_32(hdr->type); 996 hdr->misc = bswap_16(hdr->misc); 997 hdr->size = bswap_16(hdr->size); 998 } 999 1000 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) 1001 { 1002 return machine__findnew_thread(&session->machines.host, -1, pid); 1003 } 1004 1005 static struct thread *perf_session__register_idle_thread(struct perf_session *session) 1006 { 1007 struct thread *thread; 1008 1009 thread = machine__findnew_thread(&session->machines.host, 0, 0); 1010 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) { 1011 pr_err("problem inserting idle task.\n"); 1012 thread = NULL; 1013 } 1014 1015 return thread; 1016 } 1017 1018 static void perf_session__warn_about_errors(const struct perf_session *session, 1019 const struct perf_tool *tool) 1020 { 1021 if (tool->lost == perf_event__process_lost && 1022 session->stats.nr_events[PERF_RECORD_LOST] != 0) { 1023 ui__warning("Processed %d events and lost %d chunks!\n\n" 1024 "Check IO/CPU overload!\n\n", 1025 session->stats.nr_events[0], 1026 session->stats.nr_events[PERF_RECORD_LOST]); 1027 } 1028 1029 if (session->stats.nr_unknown_events != 0) { 1030 ui__warning("Found %u unknown events!\n\n" 1031 "Is this an older tool processing a perf.data " 1032 "file generated by a more recent tool?\n\n" 1033 "If that is not the case, consider " 1034 "reporting to linux-kernel@vger.kernel.org.\n\n", 1035 session->stats.nr_unknown_events); 1036 } 1037 1038 if (session->stats.nr_unknown_id != 0) { 1039 ui__warning("%u samples with id not present in the header\n", 1040 session->stats.nr_unknown_id); 1041 } 1042 1043 if (session->stats.nr_invalid_chains != 0) { 1044 ui__warning("Found invalid callchains!\n\n" 1045 "%u out of %u events were discarded for this reason.\n\n" 1046 "Consider reporting to linux-kernel@vger.kernel.org.\n\n", 1047 session->stats.nr_invalid_chains, 1048 session->stats.nr_events[PERF_RECORD_SAMPLE]); 1049 } 1050 1051 if (session->stats.nr_unprocessable_samples != 0) { 1052 ui__warning("%u unprocessable samples recorded.\n" 1053 "Do you have a KVM guest running and not using 'perf kvm'?\n", 1054 session->stats.nr_unprocessable_samples); 1055 } 1056 1057 if (session->stats.nr_unordered_events != 0) 1058 ui__warning("%u out of order events recorded.\n", session->stats.nr_unordered_events); 1059 } 1060 1061 volatile int session_done; 1062 1063 static int __perf_session__process_pipe_events(struct perf_session *session, 1064 struct perf_tool *tool) 1065 { 1066 int fd = perf_data_file__fd(session->file); 1067 union perf_event *event; 1068 uint32_t size, cur_size = 0; 1069 void *buf = NULL; 1070 s64 skip = 0; 1071 u64 head; 1072 ssize_t err; 1073 void *p; 1074 1075 perf_tool__fill_defaults(tool); 1076 1077 head = 0; 1078 cur_size = sizeof(union perf_event); 1079 1080 buf = malloc(cur_size); 1081 if (!buf) 1082 return -errno; 1083 more: 1084 event = buf; 1085 err = readn(fd, event, sizeof(struct perf_event_header)); 1086 if (err <= 0) { 1087 if (err == 0) 1088 goto done; 1089 1090 pr_err("failed to read event header\n"); 1091 goto out_err; 1092 } 1093 1094 if (session->header.needs_swap) 1095 perf_event_header__bswap(&event->header); 1096 1097 size = event->header.size; 1098 if (size < sizeof(struct perf_event_header)) { 1099 pr_err("bad event header size\n"); 1100 goto out_err; 1101 } 1102 1103 if (size > cur_size) { 1104 void *new = realloc(buf, size); 1105 if (!new) { 1106 pr_err("failed to allocate memory to read event\n"); 1107 goto out_err; 1108 } 1109 buf = new; 1110 cur_size = size; 1111 event = buf; 1112 } 1113 p = event; 1114 p += sizeof(struct perf_event_header); 1115 1116 if (size - sizeof(struct perf_event_header)) { 1117 err = readn(fd, p, size - sizeof(struct perf_event_header)); 1118 if (err <= 0) { 1119 if (err == 0) { 1120 pr_err("unexpected end of event stream\n"); 1121 goto done; 1122 } 1123 1124 pr_err("failed to read event data\n"); 1125 goto out_err; 1126 } 1127 } 1128 1129 if ((skip = perf_session__process_event(session, event, tool, head)) < 0) { 1130 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1131 head, event->header.size, event->header.type); 1132 err = -EINVAL; 1133 goto out_err; 1134 } 1135 1136 head += size; 1137 1138 if (skip > 0) 1139 head += skip; 1140 1141 if (!session_done()) 1142 goto more; 1143 done: 1144 /* do the final flush for ordered samples */ 1145 err = ordered_events__flush(session, tool, OE_FLUSH__FINAL); 1146 out_err: 1147 free(buf); 1148 perf_session__warn_about_errors(session, tool); 1149 ordered_events__free(&session->ordered_events); 1150 return err; 1151 } 1152 1153 static union perf_event * 1154 fetch_mmaped_event(struct perf_session *session, 1155 u64 head, size_t mmap_size, char *buf) 1156 { 1157 union perf_event *event; 1158 1159 /* 1160 * Ensure we have enough space remaining to read 1161 * the size of the event in the headers. 1162 */ 1163 if (head + sizeof(event->header) > mmap_size) 1164 return NULL; 1165 1166 event = (union perf_event *)(buf + head); 1167 1168 if (session->header.needs_swap) 1169 perf_event_header__bswap(&event->header); 1170 1171 if (head + event->header.size > mmap_size) { 1172 /* We're not fetching the event so swap back again */ 1173 if (session->header.needs_swap) 1174 perf_event_header__bswap(&event->header); 1175 return NULL; 1176 } 1177 1178 return event; 1179 } 1180 1181 /* 1182 * On 64bit we can mmap the data file in one go. No need for tiny mmap 1183 * slices. On 32bit we use 32MB. 1184 */ 1185 #if BITS_PER_LONG == 64 1186 #define MMAP_SIZE ULLONG_MAX 1187 #define NUM_MMAPS 1 1188 #else 1189 #define MMAP_SIZE (32 * 1024 * 1024ULL) 1190 #define NUM_MMAPS 128 1191 #endif 1192 1193 int __perf_session__process_events(struct perf_session *session, 1194 u64 data_offset, u64 data_size, 1195 u64 file_size, struct perf_tool *tool) 1196 { 1197 int fd = perf_data_file__fd(session->file); 1198 u64 head, page_offset, file_offset, file_pos, size; 1199 int err, mmap_prot, mmap_flags, map_idx = 0; 1200 size_t mmap_size; 1201 char *buf, *mmaps[NUM_MMAPS]; 1202 union perf_event *event; 1203 struct ui_progress prog; 1204 s64 skip; 1205 1206 perf_tool__fill_defaults(tool); 1207 1208 page_offset = page_size * (data_offset / page_size); 1209 file_offset = page_offset; 1210 head = data_offset - page_offset; 1211 1212 if (data_size && (data_offset + data_size < file_size)) 1213 file_size = data_offset + data_size; 1214 1215 ui_progress__init(&prog, file_size, "Processing events..."); 1216 1217 mmap_size = MMAP_SIZE; 1218 if (mmap_size > file_size) { 1219 mmap_size = file_size; 1220 session->one_mmap = true; 1221 } 1222 1223 memset(mmaps, 0, sizeof(mmaps)); 1224 1225 mmap_prot = PROT_READ; 1226 mmap_flags = MAP_SHARED; 1227 1228 if (session->header.needs_swap) { 1229 mmap_prot |= PROT_WRITE; 1230 mmap_flags = MAP_PRIVATE; 1231 } 1232 remap: 1233 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd, 1234 file_offset); 1235 if (buf == MAP_FAILED) { 1236 pr_err("failed to mmap file\n"); 1237 err = -errno; 1238 goto out_err; 1239 } 1240 mmaps[map_idx] = buf; 1241 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); 1242 file_pos = file_offset + head; 1243 if (session->one_mmap) { 1244 session->one_mmap_addr = buf; 1245 session->one_mmap_offset = file_offset; 1246 } 1247 1248 more: 1249 event = fetch_mmaped_event(session, head, mmap_size, buf); 1250 if (!event) { 1251 if (mmaps[map_idx]) { 1252 munmap(mmaps[map_idx], mmap_size); 1253 mmaps[map_idx] = NULL; 1254 } 1255 1256 page_offset = page_size * (head / page_size); 1257 file_offset += page_offset; 1258 head -= page_offset; 1259 goto remap; 1260 } 1261 1262 size = event->header.size; 1263 1264 if (size < sizeof(struct perf_event_header) || 1265 (skip = perf_session__process_event(session, event, tool, file_pos)) 1266 < 0) { 1267 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", 1268 file_offset + head, event->header.size, 1269 event->header.type); 1270 err = -EINVAL; 1271 goto out_err; 1272 } 1273 1274 if (skip) 1275 size += skip; 1276 1277 head += size; 1278 file_pos += size; 1279 1280 ui_progress__update(&prog, size); 1281 1282 if (session_done()) 1283 goto out; 1284 1285 if (file_pos < file_size) 1286 goto more; 1287 1288 out: 1289 /* do the final flush for ordered samples */ 1290 err = ordered_events__flush(session, tool, OE_FLUSH__FINAL); 1291 out_err: 1292 ui_progress__finish(); 1293 perf_session__warn_about_errors(session, tool); 1294 ordered_events__free(&session->ordered_events); 1295 session->one_mmap = false; 1296 return err; 1297 } 1298 1299 int perf_session__process_events(struct perf_session *session, 1300 struct perf_tool *tool) 1301 { 1302 u64 size = perf_data_file__size(session->file); 1303 int err; 1304 1305 if (perf_session__register_idle_thread(session) == NULL) 1306 return -ENOMEM; 1307 1308 if (!perf_data_file__is_pipe(session->file)) 1309 err = __perf_session__process_events(session, 1310 session->header.data_offset, 1311 session->header.data_size, 1312 size, tool); 1313 else 1314 err = __perf_session__process_pipe_events(session, tool); 1315 1316 return err; 1317 } 1318 1319 bool perf_session__has_traces(struct perf_session *session, const char *msg) 1320 { 1321 struct perf_evsel *evsel; 1322 1323 evlist__for_each(session->evlist, evsel) { 1324 if (evsel->attr.type == PERF_TYPE_TRACEPOINT) 1325 return true; 1326 } 1327 1328 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); 1329 return false; 1330 } 1331 1332 int maps__set_kallsyms_ref_reloc_sym(struct map **maps, 1333 const char *symbol_name, u64 addr) 1334 { 1335 char *bracket; 1336 enum map_type i; 1337 struct ref_reloc_sym *ref; 1338 1339 ref = zalloc(sizeof(struct ref_reloc_sym)); 1340 if (ref == NULL) 1341 return -ENOMEM; 1342 1343 ref->name = strdup(symbol_name); 1344 if (ref->name == NULL) { 1345 free(ref); 1346 return -ENOMEM; 1347 } 1348 1349 bracket = strchr(ref->name, ']'); 1350 if (bracket) 1351 *bracket = '\0'; 1352 1353 ref->addr = addr; 1354 1355 for (i = 0; i < MAP__NR_TYPES; ++i) { 1356 struct kmap *kmap = map__kmap(maps[i]); 1357 kmap->ref_reloc_sym = ref; 1358 } 1359 1360 return 0; 1361 } 1362 1363 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp) 1364 { 1365 return machines__fprintf_dsos(&session->machines, fp); 1366 } 1367 1368 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp, 1369 bool (skip)(struct dso *dso, int parm), int parm) 1370 { 1371 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm); 1372 } 1373 1374 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) 1375 { 1376 size_t ret = fprintf(fp, "Aggregated stats:\n"); 1377 1378 ret += events_stats__fprintf(&session->stats, fp); 1379 return ret; 1380 } 1381 1382 size_t perf_session__fprintf(struct perf_session *session, FILE *fp) 1383 { 1384 /* 1385 * FIXME: Here we have to actually print all the machines in this 1386 * session, not just the host... 1387 */ 1388 return machine__fprintf(&session->machines.host, fp); 1389 } 1390 1391 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, 1392 unsigned int type) 1393 { 1394 struct perf_evsel *pos; 1395 1396 evlist__for_each(session->evlist, pos) { 1397 if (pos->attr.type == type) 1398 return pos; 1399 } 1400 return NULL; 1401 } 1402 1403 void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample, 1404 struct addr_location *al, 1405 unsigned int print_opts, unsigned int stack_depth) 1406 { 1407 struct callchain_cursor_node *node; 1408 int print_ip = print_opts & PRINT_IP_OPT_IP; 1409 int print_sym = print_opts & PRINT_IP_OPT_SYM; 1410 int print_dso = print_opts & PRINT_IP_OPT_DSO; 1411 int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET; 1412 int print_oneline = print_opts & PRINT_IP_OPT_ONELINE; 1413 int print_srcline = print_opts & PRINT_IP_OPT_SRCLINE; 1414 char s = print_oneline ? ' ' : '\t'; 1415 1416 if (symbol_conf.use_callchain && sample->callchain) { 1417 struct addr_location node_al; 1418 1419 if (machine__resolve_callchain(al->machine, evsel, al->thread, 1420 sample, NULL, NULL, 1421 PERF_MAX_STACK_DEPTH) != 0) { 1422 if (verbose) 1423 error("Failed to resolve callchain. Skipping\n"); 1424 return; 1425 } 1426 callchain_cursor_commit(&callchain_cursor); 1427 1428 if (print_symoffset) 1429 node_al = *al; 1430 1431 while (stack_depth) { 1432 u64 addr = 0; 1433 1434 node = callchain_cursor_current(&callchain_cursor); 1435 if (!node) 1436 break; 1437 1438 if (node->sym && node->sym->ignore) 1439 goto next; 1440 1441 if (print_ip) 1442 printf("%c%16" PRIx64, s, node->ip); 1443 1444 if (node->map) 1445 addr = node->map->map_ip(node->map, node->ip); 1446 1447 if (print_sym) { 1448 printf(" "); 1449 if (print_symoffset) { 1450 node_al.addr = addr; 1451 node_al.map = node->map; 1452 symbol__fprintf_symname_offs(node->sym, &node_al, stdout); 1453 } else 1454 symbol__fprintf_symname(node->sym, stdout); 1455 } 1456 1457 if (print_dso) { 1458 printf(" ("); 1459 map__fprintf_dsoname(node->map, stdout); 1460 printf(")"); 1461 } 1462 1463 if (print_srcline) 1464 map__fprintf_srcline(node->map, addr, "\n ", 1465 stdout); 1466 1467 if (!print_oneline) 1468 printf("\n"); 1469 1470 stack_depth--; 1471 next: 1472 callchain_cursor_advance(&callchain_cursor); 1473 } 1474 1475 } else { 1476 if (al->sym && al->sym->ignore) 1477 return; 1478 1479 if (print_ip) 1480 printf("%16" PRIx64, sample->ip); 1481 1482 if (print_sym) { 1483 printf(" "); 1484 if (print_symoffset) 1485 symbol__fprintf_symname_offs(al->sym, al, 1486 stdout); 1487 else 1488 symbol__fprintf_symname(al->sym, stdout); 1489 } 1490 1491 if (print_dso) { 1492 printf(" ("); 1493 map__fprintf_dsoname(al->map, stdout); 1494 printf(")"); 1495 } 1496 1497 if (print_srcline) 1498 map__fprintf_srcline(al->map, al->addr, "\n ", stdout); 1499 } 1500 } 1501 1502 int perf_session__cpu_bitmap(struct perf_session *session, 1503 const char *cpu_list, unsigned long *cpu_bitmap) 1504 { 1505 int i, err = -1; 1506 struct cpu_map *map; 1507 1508 for (i = 0; i < PERF_TYPE_MAX; ++i) { 1509 struct perf_evsel *evsel; 1510 1511 evsel = perf_session__find_first_evtype(session, i); 1512 if (!evsel) 1513 continue; 1514 1515 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { 1516 pr_err("File does not contain CPU events. " 1517 "Remove -c option to proceed.\n"); 1518 return -1; 1519 } 1520 } 1521 1522 map = cpu_map__new(cpu_list); 1523 if (map == NULL) { 1524 pr_err("Invalid cpu_list\n"); 1525 return -1; 1526 } 1527 1528 for (i = 0; i < map->nr; i++) { 1529 int cpu = map->map[i]; 1530 1531 if (cpu >= MAX_NR_CPUS) { 1532 pr_err("Requested CPU %d too large. " 1533 "Consider raising MAX_NR_CPUS\n", cpu); 1534 goto out_delete_map; 1535 } 1536 1537 set_bit(cpu, cpu_bitmap); 1538 } 1539 1540 err = 0; 1541 1542 out_delete_map: 1543 cpu_map__delete(map); 1544 return err; 1545 } 1546 1547 void perf_session__fprintf_info(struct perf_session *session, FILE *fp, 1548 bool full) 1549 { 1550 struct stat st; 1551 int fd, ret; 1552 1553 if (session == NULL || fp == NULL) 1554 return; 1555 1556 fd = perf_data_file__fd(session->file); 1557 1558 ret = fstat(fd, &st); 1559 if (ret == -1) 1560 return; 1561 1562 fprintf(fp, "# ========\n"); 1563 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); 1564 perf_header__fprintf_info(session, fp, full); 1565 fprintf(fp, "# ========\n#\n"); 1566 } 1567 1568 1569 int __perf_session__set_tracepoints_handlers(struct perf_session *session, 1570 const struct perf_evsel_str_handler *assocs, 1571 size_t nr_assocs) 1572 { 1573 struct perf_evsel *evsel; 1574 size_t i; 1575 int err; 1576 1577 for (i = 0; i < nr_assocs; i++) { 1578 /* 1579 * Adding a handler for an event not in the session, 1580 * just ignore it. 1581 */ 1582 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name); 1583 if (evsel == NULL) 1584 continue; 1585 1586 err = -EEXIST; 1587 if (evsel->handler != NULL) 1588 goto out; 1589 evsel->handler = assocs[i].handler; 1590 } 1591 1592 err = 0; 1593 out: 1594 return err; 1595 } 1596