1 #include <errno.h> 2 #include <fcntl.h> 3 #include <inttypes.h> 4 #include <linux/kernel.h> 5 #include <linux/types.h> 6 #include <perf/cpumap.h> 7 #include <sys/types.h> 8 #include <sys/stat.h> 9 #include <unistd.h> 10 #include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */ 11 #include <linux/perf_event.h> 12 #include <linux/zalloc.h> 13 #include "cpumap.h" 14 #include "dso.h" 15 #include "event.h" 16 #include "debug.h" 17 #include "hist.h" 18 #include "machine.h" 19 #include "sort.h" 20 #include "string2.h" 21 #include "strlist.h" 22 #include "thread.h" 23 #include "thread_map.h" 24 #include "time-utils.h" 25 #include <linux/ctype.h> 26 #include "map.h" 27 #include "util/namespaces.h" 28 #include "symbol.h" 29 #include "symbol/kallsyms.h" 30 #include "asm/bug.h" 31 #include "stat.h" 32 #include "session.h" 33 #include "bpf-event.h" 34 #include "print_binary.h" 35 #include "tool.h" 36 #include "util.h" 37 38 static const char *perf_event__names[] = { 39 [0] = "TOTAL", 40 [PERF_RECORD_MMAP] = "MMAP", 41 [PERF_RECORD_MMAP2] = "MMAP2", 42 [PERF_RECORD_LOST] = "LOST", 43 [PERF_RECORD_COMM] = "COMM", 44 [PERF_RECORD_EXIT] = "EXIT", 45 [PERF_RECORD_THROTTLE] = "THROTTLE", 46 [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE", 47 [PERF_RECORD_FORK] = "FORK", 48 [PERF_RECORD_READ] = "READ", 49 [PERF_RECORD_SAMPLE] = "SAMPLE", 50 [PERF_RECORD_AUX] = "AUX", 51 [PERF_RECORD_ITRACE_START] = "ITRACE_START", 52 [PERF_RECORD_LOST_SAMPLES] = "LOST_SAMPLES", 53 [PERF_RECORD_SWITCH] = "SWITCH", 54 [PERF_RECORD_SWITCH_CPU_WIDE] = "SWITCH_CPU_WIDE", 55 [PERF_RECORD_NAMESPACES] = "NAMESPACES", 56 [PERF_RECORD_KSYMBOL] = "KSYMBOL", 57 [PERF_RECORD_BPF_EVENT] = "BPF_EVENT", 58 [PERF_RECORD_CGROUP] = "CGROUP", 59 [PERF_RECORD_TEXT_POKE] = "TEXT_POKE", 60 [PERF_RECORD_AUX_OUTPUT_HW_ID] = "AUX_OUTPUT_HW_ID", 61 [PERF_RECORD_HEADER_ATTR] = "ATTR", 62 [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE", 63 [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA", 64 [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID", 65 [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND", 66 [PERF_RECORD_ID_INDEX] = "ID_INDEX", 67 [PERF_RECORD_AUXTRACE_INFO] = "AUXTRACE_INFO", 68 [PERF_RECORD_AUXTRACE] = "AUXTRACE", 69 [PERF_RECORD_AUXTRACE_ERROR] = "AUXTRACE_ERROR", 70 [PERF_RECORD_THREAD_MAP] = "THREAD_MAP", 71 [PERF_RECORD_CPU_MAP] = "CPU_MAP", 72 [PERF_RECORD_STAT_CONFIG] = "STAT_CONFIG", 73 [PERF_RECORD_STAT] = "STAT", 74 [PERF_RECORD_STAT_ROUND] = "STAT_ROUND", 75 [PERF_RECORD_EVENT_UPDATE] = "EVENT_UPDATE", 76 [PERF_RECORD_TIME_CONV] = "TIME_CONV", 77 [PERF_RECORD_HEADER_FEATURE] = "FEATURE", 78 [PERF_RECORD_COMPRESSED] = "COMPRESSED", 79 [PERF_RECORD_FINISHED_INIT] = "FINISHED_INIT", 80 }; 81 82 const char *perf_event__name(unsigned int id) 83 { 84 if (id >= ARRAY_SIZE(perf_event__names)) 85 return "INVALID"; 86 if (!perf_event__names[id]) 87 return "UNKNOWN"; 88 return perf_event__names[id]; 89 } 90 91 struct process_symbol_args { 92 const char *name; 93 u64 start; 94 }; 95 96 static int find_func_symbol_cb(void *arg, const char *name, char type, 97 u64 start) 98 { 99 struct process_symbol_args *args = arg; 100 101 /* 102 * Must be a function or at least an alias, as in PARISC64, where "_text" is 103 * an 'A' to the same address as "_stext". 104 */ 105 if (!(kallsyms__is_function(type) || 106 type == 'A') || strcmp(name, args->name)) 107 return 0; 108 109 args->start = start; 110 return 1; 111 } 112 113 static int find_any_symbol_cb(void *arg, const char *name, 114 char type __maybe_unused, u64 start) 115 { 116 struct process_symbol_args *args = arg; 117 118 if (strcmp(name, args->name)) 119 return 0; 120 121 args->start = start; 122 return 1; 123 } 124 125 int kallsyms__get_function_start(const char *kallsyms_filename, 126 const char *symbol_name, u64 *addr) 127 { 128 struct process_symbol_args args = { .name = symbol_name, }; 129 130 if (kallsyms__parse(kallsyms_filename, &args, find_func_symbol_cb) <= 0) 131 return -1; 132 133 *addr = args.start; 134 return 0; 135 } 136 137 int kallsyms__get_symbol_start(const char *kallsyms_filename, 138 const char *symbol_name, u64 *addr) 139 { 140 struct process_symbol_args args = { .name = symbol_name, }; 141 142 if (kallsyms__parse(kallsyms_filename, &args, find_any_symbol_cb) <= 0) 143 return -1; 144 145 *addr = args.start; 146 return 0; 147 } 148 149 void perf_event__read_stat_config(struct perf_stat_config *config, 150 struct perf_record_stat_config *event) 151 { 152 unsigned i; 153 154 for (i = 0; i < event->nr; i++) { 155 156 switch (event->data[i].tag) { 157 #define CASE(__term, __val) \ 158 case PERF_STAT_CONFIG_TERM__##__term: \ 159 config->__val = event->data[i].val; \ 160 break; 161 162 CASE(AGGR_MODE, aggr_mode) 163 CASE(SCALE, scale) 164 CASE(INTERVAL, interval) 165 CASE(AGGR_LEVEL, aggr_level) 166 #undef CASE 167 default: 168 pr_warning("unknown stat config term %" PRI_lu64 "\n", 169 event->data[i].tag); 170 } 171 } 172 } 173 174 size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp) 175 { 176 const char *s; 177 178 if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC) 179 s = " exec"; 180 else 181 s = ""; 182 183 return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid); 184 } 185 186 size_t perf_event__fprintf_namespaces(union perf_event *event, FILE *fp) 187 { 188 size_t ret = 0; 189 struct perf_ns_link_info *ns_link_info; 190 u32 nr_namespaces, idx; 191 192 ns_link_info = event->namespaces.link_info; 193 nr_namespaces = event->namespaces.nr_namespaces; 194 195 ret += fprintf(fp, " %d/%d - nr_namespaces: %u\n\t\t[", 196 event->namespaces.pid, 197 event->namespaces.tid, 198 nr_namespaces); 199 200 for (idx = 0; idx < nr_namespaces; idx++) { 201 if (idx && (idx % 4 == 0)) 202 ret += fprintf(fp, "\n\t\t "); 203 204 ret += fprintf(fp, "%u/%s: %" PRIu64 "/%#" PRIx64 "%s", idx, 205 perf_ns__name(idx), (u64)ns_link_info[idx].dev, 206 (u64)ns_link_info[idx].ino, 207 ((idx + 1) != nr_namespaces) ? ", " : "]\n"); 208 } 209 210 return ret; 211 } 212 213 size_t perf_event__fprintf_cgroup(union perf_event *event, FILE *fp) 214 { 215 return fprintf(fp, " cgroup: %" PRI_lu64 " %s\n", 216 event->cgroup.id, event->cgroup.path); 217 } 218 219 int perf_event__process_comm(const struct perf_tool *tool __maybe_unused, 220 union perf_event *event, 221 struct perf_sample *sample, 222 struct machine *machine) 223 { 224 return machine__process_comm_event(machine, event, sample); 225 } 226 227 int perf_event__process_namespaces(const struct perf_tool *tool __maybe_unused, 228 union perf_event *event, 229 struct perf_sample *sample, 230 struct machine *machine) 231 { 232 return machine__process_namespaces_event(machine, event, sample); 233 } 234 235 int perf_event__process_cgroup(const struct perf_tool *tool __maybe_unused, 236 union perf_event *event, 237 struct perf_sample *sample, 238 struct machine *machine) 239 { 240 return machine__process_cgroup_event(machine, event, sample); 241 } 242 243 int perf_event__process_lost(const struct perf_tool *tool __maybe_unused, 244 union perf_event *event, 245 struct perf_sample *sample, 246 struct machine *machine) 247 { 248 return machine__process_lost_event(machine, event, sample); 249 } 250 251 int perf_event__process_aux(const struct perf_tool *tool __maybe_unused, 252 union perf_event *event, 253 struct perf_sample *sample __maybe_unused, 254 struct machine *machine) 255 { 256 return machine__process_aux_event(machine, event); 257 } 258 259 int perf_event__process_itrace_start(const struct perf_tool *tool __maybe_unused, 260 union perf_event *event, 261 struct perf_sample *sample __maybe_unused, 262 struct machine *machine) 263 { 264 return machine__process_itrace_start_event(machine, event); 265 } 266 267 int perf_event__process_aux_output_hw_id(const struct perf_tool *tool __maybe_unused, 268 union perf_event *event, 269 struct perf_sample *sample __maybe_unused, 270 struct machine *machine) 271 { 272 return machine__process_aux_output_hw_id_event(machine, event); 273 } 274 275 int perf_event__process_lost_samples(const struct perf_tool *tool __maybe_unused, 276 union perf_event *event, 277 struct perf_sample *sample, 278 struct machine *machine) 279 { 280 return machine__process_lost_samples_event(machine, event, sample); 281 } 282 283 int perf_event__process_switch(const struct perf_tool *tool __maybe_unused, 284 union perf_event *event, 285 struct perf_sample *sample __maybe_unused, 286 struct machine *machine) 287 { 288 return machine__process_switch_event(machine, event); 289 } 290 291 int perf_event__process_ksymbol(const struct perf_tool *tool __maybe_unused, 292 union perf_event *event, 293 struct perf_sample *sample __maybe_unused, 294 struct machine *machine) 295 { 296 return machine__process_ksymbol(machine, event, sample); 297 } 298 299 int perf_event__process_bpf(const struct perf_tool *tool __maybe_unused, 300 union perf_event *event, 301 struct perf_sample *sample, 302 struct machine *machine) 303 { 304 return machine__process_bpf(machine, event, sample); 305 } 306 307 int perf_event__process_text_poke(const struct perf_tool *tool __maybe_unused, 308 union perf_event *event, 309 struct perf_sample *sample, 310 struct machine *machine) 311 { 312 return machine__process_text_poke(machine, event, sample); 313 } 314 315 size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp) 316 { 317 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 "]: %c %s\n", 318 event->mmap.pid, event->mmap.tid, event->mmap.start, 319 event->mmap.len, event->mmap.pgoff, 320 (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x', 321 event->mmap.filename); 322 } 323 324 size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp) 325 { 326 if (event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) { 327 char sbuild_id[SBUILD_ID_SIZE]; 328 struct build_id bid; 329 330 build_id__init(&bid, event->mmap2.build_id, 331 event->mmap2.build_id_size); 332 build_id__sprintf(&bid, sbuild_id); 333 334 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 335 " <%s>]: %c%c%c%c %s\n", 336 event->mmap2.pid, event->mmap2.tid, event->mmap2.start, 337 event->mmap2.len, event->mmap2.pgoff, sbuild_id, 338 (event->mmap2.prot & PROT_READ) ? 'r' : '-', 339 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-', 340 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-', 341 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p', 342 event->mmap2.filename); 343 } else { 344 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 345 " %02x:%02x %"PRI_lu64" %"PRI_lu64"]: %c%c%c%c %s\n", 346 event->mmap2.pid, event->mmap2.tid, event->mmap2.start, 347 event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj, 348 event->mmap2.min, event->mmap2.ino, 349 event->mmap2.ino_generation, 350 (event->mmap2.prot & PROT_READ) ? 'r' : '-', 351 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-', 352 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-', 353 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p', 354 event->mmap2.filename); 355 } 356 } 357 358 size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp) 359 { 360 struct perf_thread_map *threads = thread_map__new_event(&event->thread_map); 361 size_t ret; 362 363 ret = fprintf(fp, " nr: "); 364 365 if (threads) 366 ret += thread_map__fprintf(threads, fp); 367 else 368 ret += fprintf(fp, "failed to get threads from event\n"); 369 370 perf_thread_map__put(threads); 371 return ret; 372 } 373 374 size_t perf_event__fprintf_cpu_map(union perf_event *event, FILE *fp) 375 { 376 struct perf_cpu_map *cpus = cpu_map__new_data(&event->cpu_map.data); 377 size_t ret; 378 379 ret = fprintf(fp, ": "); 380 381 if (cpus) 382 ret += cpu_map__fprintf(cpus, fp); 383 else 384 ret += fprintf(fp, "failed to get cpumap from event\n"); 385 386 perf_cpu_map__put(cpus); 387 return ret; 388 } 389 390 int perf_event__process_mmap(const struct perf_tool *tool __maybe_unused, 391 union perf_event *event, 392 struct perf_sample *sample, 393 struct machine *machine) 394 { 395 return machine__process_mmap_event(machine, event, sample); 396 } 397 398 int perf_event__process_mmap2(const struct perf_tool *tool __maybe_unused, 399 union perf_event *event, 400 struct perf_sample *sample, 401 struct machine *machine) 402 { 403 return machine__process_mmap2_event(machine, event, sample); 404 } 405 406 size_t perf_event__fprintf_task(union perf_event *event, FILE *fp) 407 { 408 return fprintf(fp, "(%d:%d):(%d:%d)\n", 409 event->fork.pid, event->fork.tid, 410 event->fork.ppid, event->fork.ptid); 411 } 412 413 int perf_event__process_fork(const struct perf_tool *tool __maybe_unused, 414 union perf_event *event, 415 struct perf_sample *sample, 416 struct machine *machine) 417 { 418 return machine__process_fork_event(machine, event, sample); 419 } 420 421 int perf_event__process_exit(const struct perf_tool *tool __maybe_unused, 422 union perf_event *event, 423 struct perf_sample *sample, 424 struct machine *machine) 425 { 426 return machine__process_exit_event(machine, event, sample); 427 } 428 429 int perf_event__exit_del_thread(const struct perf_tool *tool __maybe_unused, 430 union perf_event *event, 431 struct perf_sample *sample __maybe_unused, 432 struct machine *machine) 433 { 434 struct thread *thread = machine__findnew_thread(machine, 435 event->fork.pid, 436 event->fork.tid); 437 438 dump_printf("(%d:%d):(%d:%d)\n", event->fork.pid, event->fork.tid, 439 event->fork.ppid, event->fork.ptid); 440 441 if (thread) { 442 machine__remove_thread(machine, thread); 443 thread__put(thread); 444 } 445 446 return 0; 447 } 448 449 size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp) 450 { 451 return fprintf(fp, " offset: %#"PRI_lx64" size: %#"PRI_lx64" flags: %#"PRI_lx64" [%s%s%s]\n", 452 event->aux.aux_offset, event->aux.aux_size, 453 event->aux.flags, 454 event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "", 455 event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "", 456 event->aux.flags & PERF_AUX_FLAG_PARTIAL ? "P" : ""); 457 } 458 459 size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp) 460 { 461 return fprintf(fp, " pid: %u tid: %u\n", 462 event->itrace_start.pid, event->itrace_start.tid); 463 } 464 465 size_t perf_event__fprintf_aux_output_hw_id(union perf_event *event, FILE *fp) 466 { 467 return fprintf(fp, " hw_id: %#"PRI_lx64"\n", 468 event->aux_output_hw_id.hw_id); 469 } 470 471 size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp) 472 { 473 bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT; 474 const char *in_out = !out ? "IN " : 475 !(event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT) ? 476 "OUT " : "OUT preempt"; 477 478 if (event->header.type == PERF_RECORD_SWITCH) 479 return fprintf(fp, " %s\n", in_out); 480 481 return fprintf(fp, " %s %s pid/tid: %5d/%-5d\n", 482 in_out, out ? "next" : "prev", 483 event->context_switch.next_prev_pid, 484 event->context_switch.next_prev_tid); 485 } 486 487 static size_t perf_event__fprintf_lost(union perf_event *event, FILE *fp) 488 { 489 return fprintf(fp, " lost %" PRI_lu64 "\n", event->lost.lost); 490 } 491 492 size_t perf_event__fprintf_ksymbol(union perf_event *event, FILE *fp) 493 { 494 return fprintf(fp, " addr %" PRI_lx64 " len %u type %u flags 0x%x name %s\n", 495 event->ksymbol.addr, event->ksymbol.len, 496 event->ksymbol.ksym_type, 497 event->ksymbol.flags, event->ksymbol.name); 498 } 499 500 size_t perf_event__fprintf_bpf(union perf_event *event, FILE *fp) 501 { 502 return fprintf(fp, " type %u, flags %u, id %u\n", 503 event->bpf.type, event->bpf.flags, event->bpf.id); 504 } 505 506 static int text_poke_printer(enum binary_printer_ops op, unsigned int val, 507 void *extra, FILE *fp) 508 { 509 bool old = *(bool *)extra; 510 511 switch ((int)op) { 512 case BINARY_PRINT_LINE_BEGIN: 513 return fprintf(fp, " %s bytes:", old ? "Old" : "New"); 514 case BINARY_PRINT_NUM_DATA: 515 return fprintf(fp, " %02x", val); 516 case BINARY_PRINT_LINE_END: 517 return fprintf(fp, "\n"); 518 default: 519 return 0; 520 } 521 } 522 523 size_t perf_event__fprintf_text_poke(union perf_event *event, struct machine *machine, FILE *fp) 524 { 525 struct perf_record_text_poke_event *tp = &event->text_poke; 526 size_t ret; 527 bool old; 528 529 ret = fprintf(fp, " %" PRI_lx64 " ", tp->addr); 530 if (machine) { 531 struct addr_location al; 532 533 addr_location__init(&al); 534 al.map = maps__find(machine__kernel_maps(machine), tp->addr); 535 if (al.map && map__load(al.map) >= 0) { 536 al.addr = map__map_ip(al.map, tp->addr); 537 al.sym = map__find_symbol(al.map, al.addr); 538 if (al.sym) 539 ret += symbol__fprintf_symname_offs(al.sym, &al, fp); 540 } 541 addr_location__exit(&al); 542 } 543 ret += fprintf(fp, " old len %u new len %u\n", tp->old_len, tp->new_len); 544 old = true; 545 ret += binary__fprintf(tp->bytes, tp->old_len, 16, text_poke_printer, 546 &old, fp); 547 old = false; 548 ret += binary__fprintf(tp->bytes + tp->old_len, tp->new_len, 16, 549 text_poke_printer, &old, fp); 550 return ret; 551 } 552 553 size_t perf_event__fprintf(union perf_event *event, struct machine *machine, FILE *fp) 554 { 555 size_t ret = fprintf(fp, "PERF_RECORD_%s", 556 perf_event__name(event->header.type)); 557 558 switch (event->header.type) { 559 case PERF_RECORD_COMM: 560 ret += perf_event__fprintf_comm(event, fp); 561 break; 562 case PERF_RECORD_FORK: 563 case PERF_RECORD_EXIT: 564 ret += perf_event__fprintf_task(event, fp); 565 break; 566 case PERF_RECORD_MMAP: 567 ret += perf_event__fprintf_mmap(event, fp); 568 break; 569 case PERF_RECORD_NAMESPACES: 570 ret += perf_event__fprintf_namespaces(event, fp); 571 break; 572 case PERF_RECORD_CGROUP: 573 ret += perf_event__fprintf_cgroup(event, fp); 574 break; 575 case PERF_RECORD_MMAP2: 576 ret += perf_event__fprintf_mmap2(event, fp); 577 break; 578 case PERF_RECORD_AUX: 579 ret += perf_event__fprintf_aux(event, fp); 580 break; 581 case PERF_RECORD_ITRACE_START: 582 ret += perf_event__fprintf_itrace_start(event, fp); 583 break; 584 case PERF_RECORD_SWITCH: 585 case PERF_RECORD_SWITCH_CPU_WIDE: 586 ret += perf_event__fprintf_switch(event, fp); 587 break; 588 case PERF_RECORD_LOST: 589 ret += perf_event__fprintf_lost(event, fp); 590 break; 591 case PERF_RECORD_KSYMBOL: 592 ret += perf_event__fprintf_ksymbol(event, fp); 593 break; 594 case PERF_RECORD_BPF_EVENT: 595 ret += perf_event__fprintf_bpf(event, fp); 596 break; 597 case PERF_RECORD_TEXT_POKE: 598 ret += perf_event__fprintf_text_poke(event, machine, fp); 599 break; 600 case PERF_RECORD_AUX_OUTPUT_HW_ID: 601 ret += perf_event__fprintf_aux_output_hw_id(event, fp); 602 break; 603 default: 604 ret += fprintf(fp, "\n"); 605 } 606 607 return ret; 608 } 609 610 int perf_event__process(const struct perf_tool *tool __maybe_unused, 611 union perf_event *event, 612 struct perf_sample *sample, 613 struct machine *machine) 614 { 615 return machine__process_event(machine, event, sample); 616 } 617 618 struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr, 619 struct addr_location *al) 620 { 621 struct maps *maps = thread__maps(thread); 622 struct machine *machine = maps__machine(maps); 623 bool load_map = false; 624 625 maps__zput(al->maps); 626 map__zput(al->map); 627 thread__zput(al->thread); 628 al->thread = thread__get(thread); 629 630 al->addr = addr; 631 al->cpumode = cpumode; 632 al->filtered = 0; 633 634 if (machine == NULL) 635 return NULL; 636 637 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { 638 al->level = 'k'; 639 maps = machine__kernel_maps(machine); 640 load_map = !symbol_conf.lazy_load_kernel_maps; 641 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { 642 al->level = '.'; 643 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { 644 al->level = 'g'; 645 maps = machine__kernel_maps(machine); 646 load_map = !symbol_conf.lazy_load_kernel_maps; 647 } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) { 648 al->level = 'u'; 649 } else { 650 al->level = 'H'; 651 652 if ((cpumode == PERF_RECORD_MISC_GUEST_USER || 653 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && 654 !perf_guest) 655 al->filtered |= (1 << HIST_FILTER__GUEST); 656 if ((cpumode == PERF_RECORD_MISC_USER || 657 cpumode == PERF_RECORD_MISC_KERNEL) && 658 !perf_host) 659 al->filtered |= (1 << HIST_FILTER__HOST); 660 661 return NULL; 662 } 663 al->maps = maps__get(maps); 664 al->map = maps__find(maps, al->addr); 665 if (al->map != NULL) { 666 /* 667 * Kernel maps might be changed when loading symbols so loading 668 * must be done prior to using kernel maps. 669 */ 670 if (load_map) 671 map__load(al->map); 672 al->addr = map__map_ip(al->map, al->addr); 673 } 674 675 return al->map; 676 } 677 678 /* 679 * For branch stacks or branch samples, the sample cpumode might not be correct 680 * because it applies only to the sample 'ip' and not necessary to 'addr' or 681 * branch stack addresses. If possible, use a fallback to deal with those cases. 682 */ 683 struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr, 684 struct addr_location *al) 685 { 686 struct map *map = thread__find_map(thread, cpumode, addr, al); 687 struct machine *machine = maps__machine(thread__maps(thread)); 688 u8 addr_cpumode = machine__addr_cpumode(machine, cpumode, addr); 689 690 if (map || addr_cpumode == cpumode) 691 return map; 692 693 return thread__find_map(thread, addr_cpumode, addr, al); 694 } 695 696 struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode, 697 u64 addr, struct addr_location *al) 698 { 699 al->sym = NULL; 700 if (thread__find_map(thread, cpumode, addr, al)) 701 al->sym = map__find_symbol(al->map, al->addr); 702 return al->sym; 703 } 704 705 struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode, 706 u64 addr, struct addr_location *al) 707 { 708 al->sym = NULL; 709 if (thread__find_map_fb(thread, cpumode, addr, al)) 710 al->sym = map__find_symbol(al->map, al->addr); 711 return al->sym; 712 } 713 714 static bool check_address_range(struct intlist *addr_list, int addr_range, 715 unsigned long addr) 716 { 717 struct int_node *pos; 718 719 intlist__for_each_entry(pos, addr_list) { 720 if (addr >= pos->i && addr < pos->i + addr_range) 721 return true; 722 } 723 724 return false; 725 } 726 727 /* 728 * Callers need to drop the reference to al->thread, obtained in 729 * machine__findnew_thread() 730 */ 731 int machine__resolve(struct machine *machine, struct addr_location *al, 732 struct perf_sample *sample) 733 { 734 struct thread *thread; 735 struct dso *dso; 736 737 if (symbol_conf.guest_code && !machine__is_host(machine)) 738 thread = machine__findnew_guest_code(machine, sample->pid); 739 else 740 thread = machine__findnew_thread(machine, sample->pid, sample->tid); 741 if (thread == NULL) 742 return -1; 743 744 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread__tid(thread)); 745 thread__find_map(thread, sample->cpumode, sample->ip, al); 746 dso = al->map ? map__dso(al->map) : NULL; 747 dump_printf(" ...... dso: %s\n", 748 dso 749 ? dso__long_name(dso) 750 : (al->level == 'H' ? "[hypervisor]" : "<not found>")); 751 752 if (thread__is_filtered(thread)) 753 al->filtered |= (1 << HIST_FILTER__THREAD); 754 755 thread__put(thread); 756 thread = NULL; 757 758 al->sym = NULL; 759 al->cpu = sample->cpu; 760 al->socket = -1; 761 al->srcline = NULL; 762 763 if (al->cpu >= 0) { 764 struct perf_env *env = machine->env; 765 766 if (env && env->cpu) 767 al->socket = env->cpu[al->cpu].socket_id; 768 } 769 770 if (al->map) { 771 if (symbol_conf.dso_list && 772 (!dso || !(strlist__has_entry(symbol_conf.dso_list, 773 dso__short_name(dso)) || 774 (dso__short_name(dso) != dso__long_name(dso) && 775 strlist__has_entry(symbol_conf.dso_list, 776 dso__long_name(dso)))))) { 777 al->filtered |= (1 << HIST_FILTER__DSO); 778 } 779 780 al->sym = map__find_symbol(al->map, al->addr); 781 } else if (symbol_conf.dso_list) { 782 al->filtered |= (1 << HIST_FILTER__DSO); 783 } 784 785 if (symbol_conf.sym_list) { 786 int ret = 0; 787 char al_addr_str[32]; 788 size_t sz = sizeof(al_addr_str); 789 790 if (al->sym) { 791 ret = strlist__has_entry(symbol_conf.sym_list, 792 al->sym->name); 793 } 794 if (!ret && al->sym) { 795 snprintf(al_addr_str, sz, "0x%"PRIx64, 796 map__unmap_ip(al->map, al->sym->start)); 797 ret = strlist__has_entry(symbol_conf.sym_list, 798 al_addr_str); 799 } 800 if (!ret && symbol_conf.addr_list && al->map) { 801 unsigned long addr = map__unmap_ip(al->map, al->addr); 802 803 ret = intlist__has_entry(symbol_conf.addr_list, addr); 804 if (!ret && symbol_conf.addr_range) { 805 ret = check_address_range(symbol_conf.addr_list, 806 symbol_conf.addr_range, 807 addr); 808 } 809 } 810 811 if (!ret) 812 al->filtered |= (1 << HIST_FILTER__SYMBOL); 813 } 814 815 return 0; 816 } 817 818 bool is_bts_event(struct perf_event_attr *attr) 819 { 820 return attr->type == PERF_TYPE_HARDWARE && 821 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) && 822 attr->sample_period == 1; 823 } 824 825 bool sample_addr_correlates_sym(struct perf_event_attr *attr) 826 { 827 if (attr->type == PERF_TYPE_SOFTWARE && 828 (attr->config == PERF_COUNT_SW_PAGE_FAULTS || 829 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN || 830 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)) 831 return true; 832 833 if (is_bts_event(attr)) 834 return true; 835 836 return false; 837 } 838 839 void thread__resolve(struct thread *thread, struct addr_location *al, 840 struct perf_sample *sample) 841 { 842 thread__find_map_fb(thread, sample->cpumode, sample->addr, al); 843 844 al->cpu = sample->cpu; 845 al->sym = NULL; 846 847 if (al->map) 848 al->sym = map__find_symbol(al->map, al->addr); 849 } 850