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 "../perf.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_HEADER_ATTR] = "ATTR", 61 [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE", 62 [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA", 63 [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID", 64 [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND", 65 [PERF_RECORD_ID_INDEX] = "ID_INDEX", 66 [PERF_RECORD_AUXTRACE_INFO] = "AUXTRACE_INFO", 67 [PERF_RECORD_AUXTRACE] = "AUXTRACE", 68 [PERF_RECORD_AUXTRACE_ERROR] = "AUXTRACE_ERROR", 69 [PERF_RECORD_THREAD_MAP] = "THREAD_MAP", 70 [PERF_RECORD_CPU_MAP] = "CPU_MAP", 71 [PERF_RECORD_STAT_CONFIG] = "STAT_CONFIG", 72 [PERF_RECORD_STAT] = "STAT", 73 [PERF_RECORD_STAT_ROUND] = "STAT_ROUND", 74 [PERF_RECORD_EVENT_UPDATE] = "EVENT_UPDATE", 75 [PERF_RECORD_TIME_CONV] = "TIME_CONV", 76 [PERF_RECORD_HEADER_FEATURE] = "FEATURE", 77 [PERF_RECORD_COMPRESSED] = "COMPRESSED", 78 }; 79 80 const char *perf_event__name(unsigned int id) 81 { 82 if (id >= ARRAY_SIZE(perf_event__names)) 83 return "INVALID"; 84 if (!perf_event__names[id]) 85 return "UNKNOWN"; 86 return perf_event__names[id]; 87 } 88 89 struct process_symbol_args { 90 const char *name; 91 u64 start; 92 }; 93 94 static int find_symbol_cb(void *arg, const char *name, char type, 95 u64 start) 96 { 97 struct process_symbol_args *args = arg; 98 99 /* 100 * Must be a function or at least an alias, as in PARISC64, where "_text" is 101 * an 'A' to the same address as "_stext". 102 */ 103 if (!(kallsyms__is_function(type) || 104 type == 'A') || strcmp(name, args->name)) 105 return 0; 106 107 args->start = start; 108 return 1; 109 } 110 111 int kallsyms__get_function_start(const char *kallsyms_filename, 112 const char *symbol_name, u64 *addr) 113 { 114 struct process_symbol_args args = { .name = symbol_name, }; 115 116 if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0) 117 return -1; 118 119 *addr = args.start; 120 return 0; 121 } 122 123 void perf_event__read_stat_config(struct perf_stat_config *config, 124 struct perf_record_stat_config *event) 125 { 126 unsigned i; 127 128 for (i = 0; i < event->nr; i++) { 129 130 switch (event->data[i].tag) { 131 #define CASE(__term, __val) \ 132 case PERF_STAT_CONFIG_TERM__##__term: \ 133 config->__val = event->data[i].val; \ 134 break; 135 136 CASE(AGGR_MODE, aggr_mode) 137 CASE(SCALE, scale) 138 CASE(INTERVAL, interval) 139 #undef CASE 140 default: 141 pr_warning("unknown stat config term %" PRI_lu64 "\n", 142 event->data[i].tag); 143 } 144 } 145 } 146 147 size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp) 148 { 149 const char *s; 150 151 if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC) 152 s = " exec"; 153 else 154 s = ""; 155 156 return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid); 157 } 158 159 size_t perf_event__fprintf_namespaces(union perf_event *event, FILE *fp) 160 { 161 size_t ret = 0; 162 struct perf_ns_link_info *ns_link_info; 163 u32 nr_namespaces, idx; 164 165 ns_link_info = event->namespaces.link_info; 166 nr_namespaces = event->namespaces.nr_namespaces; 167 168 ret += fprintf(fp, " %d/%d - nr_namespaces: %u\n\t\t[", 169 event->namespaces.pid, 170 event->namespaces.tid, 171 nr_namespaces); 172 173 for (idx = 0; idx < nr_namespaces; idx++) { 174 if (idx && (idx % 4 == 0)) 175 ret += fprintf(fp, "\n\t\t "); 176 177 ret += fprintf(fp, "%u/%s: %" PRIu64 "/%#" PRIx64 "%s", idx, 178 perf_ns__name(idx), (u64)ns_link_info[idx].dev, 179 (u64)ns_link_info[idx].ino, 180 ((idx + 1) != nr_namespaces) ? ", " : "]\n"); 181 } 182 183 return ret; 184 } 185 186 size_t perf_event__fprintf_cgroup(union perf_event *event, FILE *fp) 187 { 188 return fprintf(fp, " cgroup: %" PRI_lu64 " %s\n", 189 event->cgroup.id, event->cgroup.path); 190 } 191 192 int perf_event__process_comm(struct perf_tool *tool __maybe_unused, 193 union perf_event *event, 194 struct perf_sample *sample, 195 struct machine *machine) 196 { 197 return machine__process_comm_event(machine, event, sample); 198 } 199 200 int perf_event__process_namespaces(struct perf_tool *tool __maybe_unused, 201 union perf_event *event, 202 struct perf_sample *sample, 203 struct machine *machine) 204 { 205 return machine__process_namespaces_event(machine, event, sample); 206 } 207 208 int perf_event__process_cgroup(struct perf_tool *tool __maybe_unused, 209 union perf_event *event, 210 struct perf_sample *sample, 211 struct machine *machine) 212 { 213 return machine__process_cgroup_event(machine, event, sample); 214 } 215 216 int perf_event__process_lost(struct perf_tool *tool __maybe_unused, 217 union perf_event *event, 218 struct perf_sample *sample, 219 struct machine *machine) 220 { 221 return machine__process_lost_event(machine, event, sample); 222 } 223 224 int perf_event__process_aux(struct perf_tool *tool __maybe_unused, 225 union perf_event *event, 226 struct perf_sample *sample __maybe_unused, 227 struct machine *machine) 228 { 229 return machine__process_aux_event(machine, event); 230 } 231 232 int perf_event__process_itrace_start(struct perf_tool *tool __maybe_unused, 233 union perf_event *event, 234 struct perf_sample *sample __maybe_unused, 235 struct machine *machine) 236 { 237 return machine__process_itrace_start_event(machine, event); 238 } 239 240 int perf_event__process_lost_samples(struct perf_tool *tool __maybe_unused, 241 union perf_event *event, 242 struct perf_sample *sample, 243 struct machine *machine) 244 { 245 return machine__process_lost_samples_event(machine, event, sample); 246 } 247 248 int perf_event__process_switch(struct perf_tool *tool __maybe_unused, 249 union perf_event *event, 250 struct perf_sample *sample __maybe_unused, 251 struct machine *machine) 252 { 253 return machine__process_switch_event(machine, event); 254 } 255 256 int perf_event__process_ksymbol(struct perf_tool *tool __maybe_unused, 257 union perf_event *event, 258 struct perf_sample *sample __maybe_unused, 259 struct machine *machine) 260 { 261 return machine__process_ksymbol(machine, event, sample); 262 } 263 264 int perf_event__process_bpf(struct perf_tool *tool __maybe_unused, 265 union perf_event *event, 266 struct perf_sample *sample, 267 struct machine *machine) 268 { 269 return machine__process_bpf(machine, event, sample); 270 } 271 272 int perf_event__process_text_poke(struct perf_tool *tool __maybe_unused, 273 union perf_event *event, 274 struct perf_sample *sample, 275 struct machine *machine) 276 { 277 return machine__process_text_poke(machine, event, sample); 278 } 279 280 size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp) 281 { 282 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 "]: %c %s\n", 283 event->mmap.pid, event->mmap.tid, event->mmap.start, 284 event->mmap.len, event->mmap.pgoff, 285 (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x', 286 event->mmap.filename); 287 } 288 289 size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp) 290 { 291 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 292 " %02x:%02x %"PRI_lu64" %"PRI_lu64"]: %c%c%c%c %s\n", 293 event->mmap2.pid, event->mmap2.tid, event->mmap2.start, 294 event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj, 295 event->mmap2.min, event->mmap2.ino, 296 event->mmap2.ino_generation, 297 (event->mmap2.prot & PROT_READ) ? 'r' : '-', 298 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-', 299 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-', 300 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p', 301 event->mmap2.filename); 302 } 303 304 size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp) 305 { 306 struct perf_thread_map *threads = thread_map__new_event(&event->thread_map); 307 size_t ret; 308 309 ret = fprintf(fp, " nr: "); 310 311 if (threads) 312 ret += thread_map__fprintf(threads, fp); 313 else 314 ret += fprintf(fp, "failed to get threads from event\n"); 315 316 perf_thread_map__put(threads); 317 return ret; 318 } 319 320 size_t perf_event__fprintf_cpu_map(union perf_event *event, FILE *fp) 321 { 322 struct perf_cpu_map *cpus = cpu_map__new_data(&event->cpu_map.data); 323 size_t ret; 324 325 ret = fprintf(fp, ": "); 326 327 if (cpus) 328 ret += cpu_map__fprintf(cpus, fp); 329 else 330 ret += fprintf(fp, "failed to get cpumap from event\n"); 331 332 perf_cpu_map__put(cpus); 333 return ret; 334 } 335 336 int perf_event__process_mmap(struct perf_tool *tool __maybe_unused, 337 union perf_event *event, 338 struct perf_sample *sample, 339 struct machine *machine) 340 { 341 return machine__process_mmap_event(machine, event, sample); 342 } 343 344 int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused, 345 union perf_event *event, 346 struct perf_sample *sample, 347 struct machine *machine) 348 { 349 return machine__process_mmap2_event(machine, event, sample); 350 } 351 352 size_t perf_event__fprintf_task(union perf_event *event, FILE *fp) 353 { 354 return fprintf(fp, "(%d:%d):(%d:%d)\n", 355 event->fork.pid, event->fork.tid, 356 event->fork.ppid, event->fork.ptid); 357 } 358 359 int perf_event__process_fork(struct perf_tool *tool __maybe_unused, 360 union perf_event *event, 361 struct perf_sample *sample, 362 struct machine *machine) 363 { 364 return machine__process_fork_event(machine, event, sample); 365 } 366 367 int perf_event__process_exit(struct perf_tool *tool __maybe_unused, 368 union perf_event *event, 369 struct perf_sample *sample, 370 struct machine *machine) 371 { 372 return machine__process_exit_event(machine, event, sample); 373 } 374 375 size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp) 376 { 377 return fprintf(fp, " offset: %#"PRI_lx64" size: %#"PRI_lx64" flags: %#"PRI_lx64" [%s%s%s]\n", 378 event->aux.aux_offset, event->aux.aux_size, 379 event->aux.flags, 380 event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "", 381 event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "", 382 event->aux.flags & PERF_AUX_FLAG_PARTIAL ? "P" : ""); 383 } 384 385 size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp) 386 { 387 return fprintf(fp, " pid: %u tid: %u\n", 388 event->itrace_start.pid, event->itrace_start.tid); 389 } 390 391 size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp) 392 { 393 bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT; 394 const char *in_out = !out ? "IN " : 395 !(event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT) ? 396 "OUT " : "OUT preempt"; 397 398 if (event->header.type == PERF_RECORD_SWITCH) 399 return fprintf(fp, " %s\n", in_out); 400 401 return fprintf(fp, " %s %s pid/tid: %5d/%-5d\n", 402 in_out, out ? "next" : "prev", 403 event->context_switch.next_prev_pid, 404 event->context_switch.next_prev_tid); 405 } 406 407 static size_t perf_event__fprintf_lost(union perf_event *event, FILE *fp) 408 { 409 return fprintf(fp, " lost %" PRI_lu64 "\n", event->lost.lost); 410 } 411 412 size_t perf_event__fprintf_ksymbol(union perf_event *event, FILE *fp) 413 { 414 return fprintf(fp, " addr %" PRI_lx64 " len %u type %u flags 0x%x name %s\n", 415 event->ksymbol.addr, event->ksymbol.len, 416 event->ksymbol.ksym_type, 417 event->ksymbol.flags, event->ksymbol.name); 418 } 419 420 size_t perf_event__fprintf_bpf(union perf_event *event, FILE *fp) 421 { 422 return fprintf(fp, " type %u, flags %u, id %u\n", 423 event->bpf.type, event->bpf.flags, event->bpf.id); 424 } 425 426 static int text_poke_printer(enum binary_printer_ops op, unsigned int val, 427 void *extra, FILE *fp) 428 { 429 bool old = *(bool *)extra; 430 431 switch ((int)op) { 432 case BINARY_PRINT_LINE_BEGIN: 433 return fprintf(fp, " %s bytes:", old ? "Old" : "New"); 434 case BINARY_PRINT_NUM_DATA: 435 return fprintf(fp, " %02x", val); 436 case BINARY_PRINT_LINE_END: 437 return fprintf(fp, "\n"); 438 default: 439 return 0; 440 } 441 } 442 443 size_t perf_event__fprintf_text_poke(union perf_event *event, struct machine *machine, FILE *fp) 444 { 445 struct perf_record_text_poke_event *tp = &event->text_poke; 446 size_t ret; 447 bool old; 448 449 ret = fprintf(fp, " %" PRI_lx64 " ", tp->addr); 450 if (machine) { 451 struct addr_location al; 452 453 al.map = maps__find(&machine->kmaps, tp->addr); 454 if (al.map && map__load(al.map) >= 0) { 455 al.addr = al.map->map_ip(al.map, tp->addr); 456 al.sym = map__find_symbol(al.map, al.addr); 457 if (al.sym) 458 ret += symbol__fprintf_symname_offs(al.sym, &al, fp); 459 } 460 } 461 ret += fprintf(fp, " old len %u new len %u\n", tp->old_len, tp->new_len); 462 old = true; 463 ret += binary__fprintf(tp->bytes, tp->old_len, 16, text_poke_printer, 464 &old, fp); 465 old = false; 466 ret += binary__fprintf(tp->bytes + tp->old_len, tp->new_len, 16, 467 text_poke_printer, &old, fp); 468 return ret; 469 } 470 471 size_t perf_event__fprintf(union perf_event *event, struct machine *machine, FILE *fp) 472 { 473 size_t ret = fprintf(fp, "PERF_RECORD_%s", 474 perf_event__name(event->header.type)); 475 476 switch (event->header.type) { 477 case PERF_RECORD_COMM: 478 ret += perf_event__fprintf_comm(event, fp); 479 break; 480 case PERF_RECORD_FORK: 481 case PERF_RECORD_EXIT: 482 ret += perf_event__fprintf_task(event, fp); 483 break; 484 case PERF_RECORD_MMAP: 485 ret += perf_event__fprintf_mmap(event, fp); 486 break; 487 case PERF_RECORD_NAMESPACES: 488 ret += perf_event__fprintf_namespaces(event, fp); 489 break; 490 case PERF_RECORD_CGROUP: 491 ret += perf_event__fprintf_cgroup(event, fp); 492 break; 493 case PERF_RECORD_MMAP2: 494 ret += perf_event__fprintf_mmap2(event, fp); 495 break; 496 case PERF_RECORD_AUX: 497 ret += perf_event__fprintf_aux(event, fp); 498 break; 499 case PERF_RECORD_ITRACE_START: 500 ret += perf_event__fprintf_itrace_start(event, fp); 501 break; 502 case PERF_RECORD_SWITCH: 503 case PERF_RECORD_SWITCH_CPU_WIDE: 504 ret += perf_event__fprintf_switch(event, fp); 505 break; 506 case PERF_RECORD_LOST: 507 ret += perf_event__fprintf_lost(event, fp); 508 break; 509 case PERF_RECORD_KSYMBOL: 510 ret += perf_event__fprintf_ksymbol(event, fp); 511 break; 512 case PERF_RECORD_BPF_EVENT: 513 ret += perf_event__fprintf_bpf(event, fp); 514 break; 515 case PERF_RECORD_TEXT_POKE: 516 ret += perf_event__fprintf_text_poke(event, machine, fp); 517 break; 518 default: 519 ret += fprintf(fp, "\n"); 520 } 521 522 return ret; 523 } 524 525 int perf_event__process(struct perf_tool *tool __maybe_unused, 526 union perf_event *event, 527 struct perf_sample *sample, 528 struct machine *machine) 529 { 530 return machine__process_event(machine, event, sample); 531 } 532 533 struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr, 534 struct addr_location *al) 535 { 536 struct maps *maps = thread->maps; 537 struct machine *machine = maps->machine; 538 bool load_map = false; 539 540 al->maps = maps; 541 al->thread = thread; 542 al->addr = addr; 543 al->cpumode = cpumode; 544 al->filtered = 0; 545 546 if (machine == NULL) { 547 al->map = NULL; 548 return NULL; 549 } 550 551 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { 552 al->level = 'k'; 553 al->maps = maps = &machine->kmaps; 554 load_map = true; 555 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { 556 al->level = '.'; 557 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { 558 al->level = 'g'; 559 al->maps = maps = &machine->kmaps; 560 load_map = true; 561 } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) { 562 al->level = 'u'; 563 } else { 564 al->level = 'H'; 565 al->map = NULL; 566 567 if ((cpumode == PERF_RECORD_MISC_GUEST_USER || 568 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && 569 !perf_guest) 570 al->filtered |= (1 << HIST_FILTER__GUEST); 571 if ((cpumode == PERF_RECORD_MISC_USER || 572 cpumode == PERF_RECORD_MISC_KERNEL) && 573 !perf_host) 574 al->filtered |= (1 << HIST_FILTER__HOST); 575 576 return NULL; 577 } 578 579 al->map = maps__find(maps, al->addr); 580 if (al->map != NULL) { 581 /* 582 * Kernel maps might be changed when loading symbols so loading 583 * must be done prior to using kernel maps. 584 */ 585 if (load_map) 586 map__load(al->map); 587 al->addr = al->map->map_ip(al->map, al->addr); 588 } 589 590 return al->map; 591 } 592 593 /* 594 * For branch stacks or branch samples, the sample cpumode might not be correct 595 * because it applies only to the sample 'ip' and not necessary to 'addr' or 596 * branch stack addresses. If possible, use a fallback to deal with those cases. 597 */ 598 struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr, 599 struct addr_location *al) 600 { 601 struct map *map = thread__find_map(thread, cpumode, addr, al); 602 struct machine *machine = thread->maps->machine; 603 u8 addr_cpumode = machine__addr_cpumode(machine, cpumode, addr); 604 605 if (map || addr_cpumode == cpumode) 606 return map; 607 608 return thread__find_map(thread, addr_cpumode, addr, al); 609 } 610 611 struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode, 612 u64 addr, struct addr_location *al) 613 { 614 al->sym = NULL; 615 if (thread__find_map(thread, cpumode, addr, al)) 616 al->sym = map__find_symbol(al->map, al->addr); 617 return al->sym; 618 } 619 620 struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode, 621 u64 addr, struct addr_location *al) 622 { 623 al->sym = NULL; 624 if (thread__find_map_fb(thread, cpumode, addr, al)) 625 al->sym = map__find_symbol(al->map, al->addr); 626 return al->sym; 627 } 628 629 /* 630 * Callers need to drop the reference to al->thread, obtained in 631 * machine__findnew_thread() 632 */ 633 int machine__resolve(struct machine *machine, struct addr_location *al, 634 struct perf_sample *sample) 635 { 636 struct thread *thread = machine__findnew_thread(machine, sample->pid, 637 sample->tid); 638 639 if (thread == NULL) 640 return -1; 641 642 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid); 643 thread__find_map(thread, sample->cpumode, sample->ip, al); 644 dump_printf(" ...... dso: %s\n", 645 al->map ? al->map->dso->long_name : 646 al->level == 'H' ? "[hypervisor]" : "<not found>"); 647 648 if (thread__is_filtered(thread)) 649 al->filtered |= (1 << HIST_FILTER__THREAD); 650 651 al->sym = NULL; 652 al->cpu = sample->cpu; 653 al->socket = -1; 654 al->srcline = NULL; 655 656 if (al->cpu >= 0) { 657 struct perf_env *env = machine->env; 658 659 if (env && env->cpu) 660 al->socket = env->cpu[al->cpu].socket_id; 661 } 662 663 if (al->map) { 664 struct dso *dso = al->map->dso; 665 666 if (symbol_conf.dso_list && 667 (!dso || !(strlist__has_entry(symbol_conf.dso_list, 668 dso->short_name) || 669 (dso->short_name != dso->long_name && 670 strlist__has_entry(symbol_conf.dso_list, 671 dso->long_name))))) { 672 al->filtered |= (1 << HIST_FILTER__DSO); 673 } 674 675 al->sym = map__find_symbol(al->map, al->addr); 676 } 677 678 if (symbol_conf.sym_list) { 679 int ret = 0; 680 char al_addr_str[32]; 681 size_t sz = sizeof(al_addr_str); 682 683 if (al->sym) { 684 ret = strlist__has_entry(symbol_conf.sym_list, 685 al->sym->name); 686 } 687 if (!ret && al->sym) { 688 snprintf(al_addr_str, sz, "0x%"PRIx64, 689 al->map->unmap_ip(al->map, al->sym->start)); 690 ret = strlist__has_entry(symbol_conf.sym_list, 691 al_addr_str); 692 } 693 if (!ret) 694 al->filtered |= (1 << HIST_FILTER__SYMBOL); 695 } 696 697 return 0; 698 } 699 700 /* 701 * The preprocess_sample method will return with reference counts for the 702 * in it, when done using (and perhaps getting ref counts if needing to 703 * keep a pointer to one of those entries) it must be paired with 704 * addr_location__put(), so that the refcounts can be decremented. 705 */ 706 void addr_location__put(struct addr_location *al) 707 { 708 thread__zput(al->thread); 709 } 710 711 bool is_bts_event(struct perf_event_attr *attr) 712 { 713 return attr->type == PERF_TYPE_HARDWARE && 714 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) && 715 attr->sample_period == 1; 716 } 717 718 bool sample_addr_correlates_sym(struct perf_event_attr *attr) 719 { 720 if (attr->type == PERF_TYPE_SOFTWARE && 721 (attr->config == PERF_COUNT_SW_PAGE_FAULTS || 722 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN || 723 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)) 724 return true; 725 726 if (is_bts_event(attr)) 727 return true; 728 729 return false; 730 } 731 732 void thread__resolve(struct thread *thread, struct addr_location *al, 733 struct perf_sample *sample) 734 { 735 thread__find_map_fb(thread, sample->cpumode, sample->addr, al); 736 737 al->cpu = sample->cpu; 738 al->sym = NULL; 739 740 if (al->map) 741 al->sym = map__find_symbol(al->map, al->addr); 742 } 743