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_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 int kallsyms__get_function_start(const char *kallsyms_filename, 114 const char *symbol_name, u64 *addr) 115 { 116 struct process_symbol_args args = { .name = symbol_name, }; 117 118 if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0) 119 return -1; 120 121 *addr = args.start; 122 return 0; 123 } 124 125 void perf_event__read_stat_config(struct perf_stat_config *config, 126 struct perf_record_stat_config *event) 127 { 128 unsigned i; 129 130 for (i = 0; i < event->nr; i++) { 131 132 switch (event->data[i].tag) { 133 #define CASE(__term, __val) \ 134 case PERF_STAT_CONFIG_TERM__##__term: \ 135 config->__val = event->data[i].val; \ 136 break; 137 138 CASE(AGGR_MODE, aggr_mode) 139 CASE(SCALE, scale) 140 CASE(INTERVAL, interval) 141 CASE(AGGR_LEVEL, aggr_level) 142 #undef CASE 143 default: 144 pr_warning("unknown stat config term %" PRI_lu64 "\n", 145 event->data[i].tag); 146 } 147 } 148 } 149 150 size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp) 151 { 152 const char *s; 153 154 if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC) 155 s = " exec"; 156 else 157 s = ""; 158 159 return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid); 160 } 161 162 size_t perf_event__fprintf_namespaces(union perf_event *event, FILE *fp) 163 { 164 size_t ret = 0; 165 struct perf_ns_link_info *ns_link_info; 166 u32 nr_namespaces, idx; 167 168 ns_link_info = event->namespaces.link_info; 169 nr_namespaces = event->namespaces.nr_namespaces; 170 171 ret += fprintf(fp, " %d/%d - nr_namespaces: %u\n\t\t[", 172 event->namespaces.pid, 173 event->namespaces.tid, 174 nr_namespaces); 175 176 for (idx = 0; idx < nr_namespaces; idx++) { 177 if (idx && (idx % 4 == 0)) 178 ret += fprintf(fp, "\n\t\t "); 179 180 ret += fprintf(fp, "%u/%s: %" PRIu64 "/%#" PRIx64 "%s", idx, 181 perf_ns__name(idx), (u64)ns_link_info[idx].dev, 182 (u64)ns_link_info[idx].ino, 183 ((idx + 1) != nr_namespaces) ? ", " : "]\n"); 184 } 185 186 return ret; 187 } 188 189 size_t perf_event__fprintf_cgroup(union perf_event *event, FILE *fp) 190 { 191 return fprintf(fp, " cgroup: %" PRI_lu64 " %s\n", 192 event->cgroup.id, event->cgroup.path); 193 } 194 195 int perf_event__process_comm(struct perf_tool *tool __maybe_unused, 196 union perf_event *event, 197 struct perf_sample *sample, 198 struct machine *machine) 199 { 200 return machine__process_comm_event(machine, event, sample); 201 } 202 203 int perf_event__process_namespaces(struct perf_tool *tool __maybe_unused, 204 union perf_event *event, 205 struct perf_sample *sample, 206 struct machine *machine) 207 { 208 return machine__process_namespaces_event(machine, event, sample); 209 } 210 211 int perf_event__process_cgroup(struct perf_tool *tool __maybe_unused, 212 union perf_event *event, 213 struct perf_sample *sample, 214 struct machine *machine) 215 { 216 return machine__process_cgroup_event(machine, event, sample); 217 } 218 219 int perf_event__process_lost(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_lost_event(machine, event, sample); 225 } 226 227 int perf_event__process_aux(struct perf_tool *tool __maybe_unused, 228 union perf_event *event, 229 struct perf_sample *sample __maybe_unused, 230 struct machine *machine) 231 { 232 return machine__process_aux_event(machine, event); 233 } 234 235 int perf_event__process_itrace_start(struct perf_tool *tool __maybe_unused, 236 union perf_event *event, 237 struct perf_sample *sample __maybe_unused, 238 struct machine *machine) 239 { 240 return machine__process_itrace_start_event(machine, event); 241 } 242 243 int perf_event__process_aux_output_hw_id(struct perf_tool *tool __maybe_unused, 244 union perf_event *event, 245 struct perf_sample *sample __maybe_unused, 246 struct machine *machine) 247 { 248 return machine__process_aux_output_hw_id_event(machine, event); 249 } 250 251 int perf_event__process_lost_samples(struct perf_tool *tool __maybe_unused, 252 union perf_event *event, 253 struct perf_sample *sample, 254 struct machine *machine) 255 { 256 return machine__process_lost_samples_event(machine, event, sample); 257 } 258 259 int perf_event__process_switch(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_switch_event(machine, event); 265 } 266 267 int perf_event__process_ksymbol(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_ksymbol(machine, event, sample); 273 } 274 275 int perf_event__process_bpf(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_bpf(machine, event, sample); 281 } 282 283 int perf_event__process_text_poke(struct perf_tool *tool __maybe_unused, 284 union perf_event *event, 285 struct perf_sample *sample, 286 struct machine *machine) 287 { 288 return machine__process_text_poke(machine, event, sample); 289 } 290 291 size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp) 292 { 293 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 "]: %c %s\n", 294 event->mmap.pid, event->mmap.tid, event->mmap.start, 295 event->mmap.len, event->mmap.pgoff, 296 (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x', 297 event->mmap.filename); 298 } 299 300 size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp) 301 { 302 if (event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) { 303 char sbuild_id[SBUILD_ID_SIZE]; 304 struct build_id bid; 305 306 build_id__init(&bid, event->mmap2.build_id, 307 event->mmap2.build_id_size); 308 build_id__sprintf(&bid, sbuild_id); 309 310 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 311 " <%s>]: %c%c%c%c %s\n", 312 event->mmap2.pid, event->mmap2.tid, event->mmap2.start, 313 event->mmap2.len, event->mmap2.pgoff, sbuild_id, 314 (event->mmap2.prot & PROT_READ) ? 'r' : '-', 315 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-', 316 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-', 317 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p', 318 event->mmap2.filename); 319 } else { 320 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 321 " %02x:%02x %"PRI_lu64" %"PRI_lu64"]: %c%c%c%c %s\n", 322 event->mmap2.pid, event->mmap2.tid, event->mmap2.start, 323 event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj, 324 event->mmap2.min, event->mmap2.ino, 325 event->mmap2.ino_generation, 326 (event->mmap2.prot & PROT_READ) ? 'r' : '-', 327 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-', 328 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-', 329 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p', 330 event->mmap2.filename); 331 } 332 } 333 334 size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp) 335 { 336 struct perf_thread_map *threads = thread_map__new_event(&event->thread_map); 337 size_t ret; 338 339 ret = fprintf(fp, " nr: "); 340 341 if (threads) 342 ret += thread_map__fprintf(threads, fp); 343 else 344 ret += fprintf(fp, "failed to get threads from event\n"); 345 346 perf_thread_map__put(threads); 347 return ret; 348 } 349 350 size_t perf_event__fprintf_cpu_map(union perf_event *event, FILE *fp) 351 { 352 struct perf_cpu_map *cpus = cpu_map__new_data(&event->cpu_map.data); 353 size_t ret; 354 355 ret = fprintf(fp, ": "); 356 357 if (cpus) 358 ret += cpu_map__fprintf(cpus, fp); 359 else 360 ret += fprintf(fp, "failed to get cpumap from event\n"); 361 362 perf_cpu_map__put(cpus); 363 return ret; 364 } 365 366 int perf_event__process_mmap(struct perf_tool *tool __maybe_unused, 367 union perf_event *event, 368 struct perf_sample *sample, 369 struct machine *machine) 370 { 371 return machine__process_mmap_event(machine, event, sample); 372 } 373 374 int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused, 375 union perf_event *event, 376 struct perf_sample *sample, 377 struct machine *machine) 378 { 379 return machine__process_mmap2_event(machine, event, sample); 380 } 381 382 size_t perf_event__fprintf_task(union perf_event *event, FILE *fp) 383 { 384 return fprintf(fp, "(%d:%d):(%d:%d)\n", 385 event->fork.pid, event->fork.tid, 386 event->fork.ppid, event->fork.ptid); 387 } 388 389 int perf_event__process_fork(struct perf_tool *tool __maybe_unused, 390 union perf_event *event, 391 struct perf_sample *sample, 392 struct machine *machine) 393 { 394 return machine__process_fork_event(machine, event, sample); 395 } 396 397 int perf_event__process_exit(struct perf_tool *tool __maybe_unused, 398 union perf_event *event, 399 struct perf_sample *sample, 400 struct machine *machine) 401 { 402 return machine__process_exit_event(machine, event, sample); 403 } 404 405 size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp) 406 { 407 return fprintf(fp, " offset: %#"PRI_lx64" size: %#"PRI_lx64" flags: %#"PRI_lx64" [%s%s%s]\n", 408 event->aux.aux_offset, event->aux.aux_size, 409 event->aux.flags, 410 event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "", 411 event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "", 412 event->aux.flags & PERF_AUX_FLAG_PARTIAL ? "P" : ""); 413 } 414 415 size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp) 416 { 417 return fprintf(fp, " pid: %u tid: %u\n", 418 event->itrace_start.pid, event->itrace_start.tid); 419 } 420 421 size_t perf_event__fprintf_aux_output_hw_id(union perf_event *event, FILE *fp) 422 { 423 return fprintf(fp, " hw_id: %#"PRI_lx64"\n", 424 event->aux_output_hw_id.hw_id); 425 } 426 427 size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp) 428 { 429 bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT; 430 const char *in_out = !out ? "IN " : 431 !(event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT) ? 432 "OUT " : "OUT preempt"; 433 434 if (event->header.type == PERF_RECORD_SWITCH) 435 return fprintf(fp, " %s\n", in_out); 436 437 return fprintf(fp, " %s %s pid/tid: %5d/%-5d\n", 438 in_out, out ? "next" : "prev", 439 event->context_switch.next_prev_pid, 440 event->context_switch.next_prev_tid); 441 } 442 443 static size_t perf_event__fprintf_lost(union perf_event *event, FILE *fp) 444 { 445 return fprintf(fp, " lost %" PRI_lu64 "\n", event->lost.lost); 446 } 447 448 size_t perf_event__fprintf_ksymbol(union perf_event *event, FILE *fp) 449 { 450 return fprintf(fp, " addr %" PRI_lx64 " len %u type %u flags 0x%x name %s\n", 451 event->ksymbol.addr, event->ksymbol.len, 452 event->ksymbol.ksym_type, 453 event->ksymbol.flags, event->ksymbol.name); 454 } 455 456 size_t perf_event__fprintf_bpf(union perf_event *event, FILE *fp) 457 { 458 return fprintf(fp, " type %u, flags %u, id %u\n", 459 event->bpf.type, event->bpf.flags, event->bpf.id); 460 } 461 462 static int text_poke_printer(enum binary_printer_ops op, unsigned int val, 463 void *extra, FILE *fp) 464 { 465 bool old = *(bool *)extra; 466 467 switch ((int)op) { 468 case BINARY_PRINT_LINE_BEGIN: 469 return fprintf(fp, " %s bytes:", old ? "Old" : "New"); 470 case BINARY_PRINT_NUM_DATA: 471 return fprintf(fp, " %02x", val); 472 case BINARY_PRINT_LINE_END: 473 return fprintf(fp, "\n"); 474 default: 475 return 0; 476 } 477 } 478 479 size_t perf_event__fprintf_text_poke(union perf_event *event, struct machine *machine, FILE *fp) 480 { 481 struct perf_record_text_poke_event *tp = &event->text_poke; 482 size_t ret; 483 bool old; 484 485 ret = fprintf(fp, " %" PRI_lx64 " ", tp->addr); 486 if (machine) { 487 struct addr_location al; 488 489 al.map = map__get(maps__find(machine__kernel_maps(machine), tp->addr)); 490 if (al.map && map__load(al.map) >= 0) { 491 al.addr = map__map_ip(al.map, tp->addr); 492 al.sym = map__find_symbol(al.map, al.addr); 493 if (al.sym) 494 ret += symbol__fprintf_symname_offs(al.sym, &al, fp); 495 } 496 map__put(al.map); 497 } 498 ret += fprintf(fp, " old len %u new len %u\n", tp->old_len, tp->new_len); 499 old = true; 500 ret += binary__fprintf(tp->bytes, tp->old_len, 16, text_poke_printer, 501 &old, fp); 502 old = false; 503 ret += binary__fprintf(tp->bytes + tp->old_len, tp->new_len, 16, 504 text_poke_printer, &old, fp); 505 return ret; 506 } 507 508 size_t perf_event__fprintf(union perf_event *event, struct machine *machine, FILE *fp) 509 { 510 size_t ret = fprintf(fp, "PERF_RECORD_%s", 511 perf_event__name(event->header.type)); 512 513 switch (event->header.type) { 514 case PERF_RECORD_COMM: 515 ret += perf_event__fprintf_comm(event, fp); 516 break; 517 case PERF_RECORD_FORK: 518 case PERF_RECORD_EXIT: 519 ret += perf_event__fprintf_task(event, fp); 520 break; 521 case PERF_RECORD_MMAP: 522 ret += perf_event__fprintf_mmap(event, fp); 523 break; 524 case PERF_RECORD_NAMESPACES: 525 ret += perf_event__fprintf_namespaces(event, fp); 526 break; 527 case PERF_RECORD_CGROUP: 528 ret += perf_event__fprintf_cgroup(event, fp); 529 break; 530 case PERF_RECORD_MMAP2: 531 ret += perf_event__fprintf_mmap2(event, fp); 532 break; 533 case PERF_RECORD_AUX: 534 ret += perf_event__fprintf_aux(event, fp); 535 break; 536 case PERF_RECORD_ITRACE_START: 537 ret += perf_event__fprintf_itrace_start(event, fp); 538 break; 539 case PERF_RECORD_SWITCH: 540 case PERF_RECORD_SWITCH_CPU_WIDE: 541 ret += perf_event__fprintf_switch(event, fp); 542 break; 543 case PERF_RECORD_LOST: 544 ret += perf_event__fprintf_lost(event, fp); 545 break; 546 case PERF_RECORD_KSYMBOL: 547 ret += perf_event__fprintf_ksymbol(event, fp); 548 break; 549 case PERF_RECORD_BPF_EVENT: 550 ret += perf_event__fprintf_bpf(event, fp); 551 break; 552 case PERF_RECORD_TEXT_POKE: 553 ret += perf_event__fprintf_text_poke(event, machine, fp); 554 break; 555 case PERF_RECORD_AUX_OUTPUT_HW_ID: 556 ret += perf_event__fprintf_aux_output_hw_id(event, fp); 557 break; 558 default: 559 ret += fprintf(fp, "\n"); 560 } 561 562 return ret; 563 } 564 565 int perf_event__process(struct perf_tool *tool __maybe_unused, 566 union perf_event *event, 567 struct perf_sample *sample, 568 struct machine *machine) 569 { 570 return machine__process_event(machine, event, sample); 571 } 572 573 struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr, 574 struct addr_location *al) 575 { 576 struct maps *maps = thread->maps; 577 struct machine *machine = maps__machine(maps); 578 bool load_map = false; 579 580 al->maps = maps; 581 al->thread = thread; 582 al->addr = addr; 583 al->cpumode = cpumode; 584 al->filtered = 0; 585 586 if (machine == NULL) { 587 al->map = NULL; 588 return NULL; 589 } 590 591 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { 592 al->level = 'k'; 593 al->maps = maps = machine__kernel_maps(machine); 594 load_map = true; 595 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { 596 al->level = '.'; 597 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { 598 al->level = 'g'; 599 al->maps = maps = machine__kernel_maps(machine); 600 load_map = true; 601 } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) { 602 al->level = 'u'; 603 } else { 604 al->level = 'H'; 605 al->map = NULL; 606 607 if ((cpumode == PERF_RECORD_MISC_GUEST_USER || 608 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && 609 !perf_guest) 610 al->filtered |= (1 << HIST_FILTER__GUEST); 611 if ((cpumode == PERF_RECORD_MISC_USER || 612 cpumode == PERF_RECORD_MISC_KERNEL) && 613 !perf_host) 614 al->filtered |= (1 << HIST_FILTER__HOST); 615 616 return NULL; 617 } 618 619 al->map = map__get(maps__find(maps, al->addr)); 620 if (al->map != NULL) { 621 /* 622 * Kernel maps might be changed when loading symbols so loading 623 * must be done prior to using kernel maps. 624 */ 625 if (load_map) 626 map__load(al->map); 627 al->addr = map__map_ip(al->map, al->addr); 628 } 629 630 return al->map; 631 } 632 633 /* 634 * For branch stacks or branch samples, the sample cpumode might not be correct 635 * because it applies only to the sample 'ip' and not necessary to 'addr' or 636 * branch stack addresses. If possible, use a fallback to deal with those cases. 637 */ 638 struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr, 639 struct addr_location *al) 640 { 641 struct map *map = thread__find_map(thread, cpumode, addr, al); 642 struct machine *machine = maps__machine(thread->maps); 643 u8 addr_cpumode = machine__addr_cpumode(machine, cpumode, addr); 644 645 if (map || addr_cpumode == cpumode) 646 return map; 647 648 return thread__find_map(thread, addr_cpumode, addr, al); 649 } 650 651 struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode, 652 u64 addr, struct addr_location *al) 653 { 654 al->sym = NULL; 655 if (thread__find_map(thread, cpumode, addr, al)) 656 al->sym = map__find_symbol(al->map, al->addr); 657 return al->sym; 658 } 659 660 struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode, 661 u64 addr, struct addr_location *al) 662 { 663 al->sym = NULL; 664 if (thread__find_map_fb(thread, cpumode, addr, al)) 665 al->sym = map__find_symbol(al->map, al->addr); 666 return al->sym; 667 } 668 669 static bool check_address_range(struct intlist *addr_list, int addr_range, 670 unsigned long addr) 671 { 672 struct int_node *pos; 673 674 intlist__for_each_entry(pos, addr_list) { 675 if (addr >= pos->i && addr < pos->i + addr_range) 676 return true; 677 } 678 679 return false; 680 } 681 682 /* 683 * Callers need to drop the reference to al->thread, obtained in 684 * machine__findnew_thread() 685 */ 686 int machine__resolve(struct machine *machine, struct addr_location *al, 687 struct perf_sample *sample) 688 { 689 struct thread *thread; 690 struct dso *dso; 691 692 if (symbol_conf.guest_code && !machine__is_host(machine)) 693 thread = machine__findnew_guest_code(machine, sample->pid); 694 else 695 thread = machine__findnew_thread(machine, sample->pid, sample->tid); 696 if (thread == NULL) 697 return -1; 698 699 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid); 700 thread__find_map(thread, sample->cpumode, sample->ip, al); 701 dso = al->map ? map__dso(al->map) : NULL; 702 dump_printf(" ...... dso: %s\n", 703 dso 704 ? dso->long_name 705 : (al->level == 'H' ? "[hypervisor]" : "<not found>")); 706 707 if (thread__is_filtered(thread)) 708 al->filtered |= (1 << HIST_FILTER__THREAD); 709 710 al->sym = NULL; 711 al->cpu = sample->cpu; 712 al->socket = -1; 713 al->srcline = NULL; 714 715 if (al->cpu >= 0) { 716 struct perf_env *env = machine->env; 717 718 if (env && env->cpu) 719 al->socket = env->cpu[al->cpu].socket_id; 720 } 721 722 if (al->map) { 723 if (symbol_conf.dso_list && 724 (!dso || !(strlist__has_entry(symbol_conf.dso_list, 725 dso->short_name) || 726 (dso->short_name != dso->long_name && 727 strlist__has_entry(symbol_conf.dso_list, 728 dso->long_name))))) { 729 al->filtered |= (1 << HIST_FILTER__DSO); 730 } 731 732 al->sym = map__find_symbol(al->map, al->addr); 733 } else if (symbol_conf.dso_list) { 734 al->filtered |= (1 << HIST_FILTER__DSO); 735 } 736 737 if (symbol_conf.sym_list) { 738 int ret = 0; 739 char al_addr_str[32]; 740 size_t sz = sizeof(al_addr_str); 741 742 if (al->sym) { 743 ret = strlist__has_entry(symbol_conf.sym_list, 744 al->sym->name); 745 } 746 if (!ret && al->sym) { 747 snprintf(al_addr_str, sz, "0x%"PRIx64, 748 map__unmap_ip(al->map, al->sym->start)); 749 ret = strlist__has_entry(symbol_conf.sym_list, 750 al_addr_str); 751 } 752 if (!ret && symbol_conf.addr_list && al->map) { 753 unsigned long addr = map__unmap_ip(al->map, al->addr); 754 755 ret = intlist__has_entry(symbol_conf.addr_list, addr); 756 if (!ret && symbol_conf.addr_range) { 757 ret = check_address_range(symbol_conf.addr_list, 758 symbol_conf.addr_range, 759 addr); 760 } 761 } 762 763 if (!ret) 764 al->filtered |= (1 << HIST_FILTER__SYMBOL); 765 } 766 767 return 0; 768 } 769 770 /* 771 * The preprocess_sample method will return with reference counts for the 772 * in it, when done using (and perhaps getting ref counts if needing to 773 * keep a pointer to one of those entries) it must be paired with 774 * addr_location__put(), so that the refcounts can be decremented. 775 */ 776 void addr_location__put(struct addr_location *al) 777 { 778 map__zput(al->map); 779 thread__zput(al->thread); 780 } 781 782 bool is_bts_event(struct perf_event_attr *attr) 783 { 784 return attr->type == PERF_TYPE_HARDWARE && 785 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) && 786 attr->sample_period == 1; 787 } 788 789 bool sample_addr_correlates_sym(struct perf_event_attr *attr) 790 { 791 if (attr->type == PERF_TYPE_SOFTWARE && 792 (attr->config == PERF_COUNT_SW_PAGE_FAULTS || 793 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN || 794 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)) 795 return true; 796 797 if (is_bts_event(attr)) 798 return true; 799 800 return false; 801 } 802 803 void thread__resolve(struct thread *thread, struct addr_location *al, 804 struct perf_sample *sample) 805 { 806 thread__find_map_fb(thread, sample->cpumode, sample->addr, al); 807 808 al->cpu = sample->cpu; 809 al->sym = NULL; 810 811 if (al->map) 812 al->sym = map__find_symbol(al->map, al->addr); 813 } 814