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 [PERF_RECORD_COMPRESSED2] = "COMPRESSED2", 81 }; 82 83 const char *perf_event__name(unsigned int id) 84 { 85 if (id >= ARRAY_SIZE(perf_event__names)) 86 return "INVALID"; 87 if (!perf_event__names[id]) 88 return "UNKNOWN"; 89 return perf_event__names[id]; 90 } 91 92 struct process_symbol_args { 93 const char *name; 94 u64 start; 95 }; 96 97 static int find_func_symbol_cb(void *arg, const char *name, char type, 98 u64 start) 99 { 100 struct process_symbol_args *args = arg; 101 102 /* 103 * Must be a function or at least an alias, as in PARISC64, where "_text" is 104 * an 'A' to the same address as "_stext". 105 */ 106 if (!(kallsyms__is_function(type) || 107 type == 'A') || strcmp(name, args->name)) 108 return 0; 109 110 args->start = start; 111 return 1; 112 } 113 114 static int find_any_symbol_cb(void *arg, const char *name, 115 char type __maybe_unused, u64 start) 116 { 117 struct process_symbol_args *args = arg; 118 119 if (strcmp(name, args->name)) 120 return 0; 121 122 args->start = start; 123 return 1; 124 } 125 126 int kallsyms__get_function_start(const char *kallsyms_filename, 127 const char *symbol_name, u64 *addr) 128 { 129 struct process_symbol_args args = { .name = symbol_name, }; 130 131 if (kallsyms__parse(kallsyms_filename, &args, find_func_symbol_cb) <= 0) 132 return -1; 133 134 *addr = args.start; 135 return 0; 136 } 137 138 int kallsyms__get_symbol_start(const char *kallsyms_filename, 139 const char *symbol_name, u64 *addr) 140 { 141 struct process_symbol_args args = { .name = symbol_name, }; 142 143 if (kallsyms__parse(kallsyms_filename, &args, find_any_symbol_cb) <= 0) 144 return -1; 145 146 *addr = args.start; 147 return 0; 148 } 149 150 void perf_event__read_stat_config(struct perf_stat_config *config, 151 struct perf_record_stat_config *event) 152 { 153 unsigned i; 154 155 for (i = 0; i < event->nr; i++) { 156 157 switch (event->data[i].tag) { 158 #define CASE(__term, __val) \ 159 case PERF_STAT_CONFIG_TERM__##__term: \ 160 config->__val = event->data[i].val; \ 161 break; 162 163 CASE(AGGR_MODE, aggr_mode) 164 CASE(SCALE, scale) 165 CASE(INTERVAL, interval) 166 CASE(AGGR_LEVEL, aggr_level) 167 #undef CASE 168 default: 169 pr_warning("unknown stat config term %" PRI_lu64 "\n", 170 event->data[i].tag); 171 } 172 } 173 } 174 175 size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp) 176 { 177 const char *s; 178 179 if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC) 180 s = " exec"; 181 else 182 s = ""; 183 184 return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid); 185 } 186 187 size_t perf_event__fprintf_namespaces(union perf_event *event, FILE *fp) 188 { 189 size_t ret = 0; 190 struct perf_ns_link_info *ns_link_info; 191 u32 nr_namespaces, idx; 192 193 ns_link_info = event->namespaces.link_info; 194 nr_namespaces = event->namespaces.nr_namespaces; 195 196 ret += fprintf(fp, " %d/%d - nr_namespaces: %u\n\t\t[", 197 event->namespaces.pid, 198 event->namespaces.tid, 199 nr_namespaces); 200 201 for (idx = 0; idx < nr_namespaces; idx++) { 202 if (idx && (idx % 4 == 0)) 203 ret += fprintf(fp, "\n\t\t "); 204 205 ret += fprintf(fp, "%u/%s: %" PRIu64 "/%#" PRIx64 "%s", idx, 206 perf_ns__name(idx), (u64)ns_link_info[idx].dev, 207 (u64)ns_link_info[idx].ino, 208 ((idx + 1) != nr_namespaces) ? ", " : "]\n"); 209 } 210 211 return ret; 212 } 213 214 size_t perf_event__fprintf_cgroup(union perf_event *event, FILE *fp) 215 { 216 return fprintf(fp, " cgroup: %" PRI_lu64 " %s\n", 217 event->cgroup.id, event->cgroup.path); 218 } 219 220 int perf_event__process_comm(const struct perf_tool *tool __maybe_unused, 221 union perf_event *event, 222 struct perf_sample *sample, 223 struct machine *machine) 224 { 225 return machine__process_comm_event(machine, event, sample); 226 } 227 228 int perf_event__process_namespaces(const struct perf_tool *tool __maybe_unused, 229 union perf_event *event, 230 struct perf_sample *sample, 231 struct machine *machine) 232 { 233 return machine__process_namespaces_event(machine, event, sample); 234 } 235 236 int perf_event__process_cgroup(const struct perf_tool *tool __maybe_unused, 237 union perf_event *event, 238 struct perf_sample *sample, 239 struct machine *machine) 240 { 241 return machine__process_cgroup_event(machine, event, sample); 242 } 243 244 int perf_event__process_lost(const struct perf_tool *tool __maybe_unused, 245 union perf_event *event, 246 struct perf_sample *sample, 247 struct machine *machine) 248 { 249 return machine__process_lost_event(machine, event, sample); 250 } 251 252 int perf_event__process_aux(const struct perf_tool *tool __maybe_unused, 253 union perf_event *event, 254 struct perf_sample *sample __maybe_unused, 255 struct machine *machine) 256 { 257 return machine__process_aux_event(machine, event); 258 } 259 260 int perf_event__process_itrace_start(const struct perf_tool *tool __maybe_unused, 261 union perf_event *event, 262 struct perf_sample *sample __maybe_unused, 263 struct machine *machine) 264 { 265 return machine__process_itrace_start_event(machine, event); 266 } 267 268 int perf_event__process_aux_output_hw_id(const struct perf_tool *tool __maybe_unused, 269 union perf_event *event, 270 struct perf_sample *sample __maybe_unused, 271 struct machine *machine) 272 { 273 return machine__process_aux_output_hw_id_event(machine, event); 274 } 275 276 int perf_event__process_lost_samples(const struct perf_tool *tool __maybe_unused, 277 union perf_event *event, 278 struct perf_sample *sample, 279 struct machine *machine) 280 { 281 return machine__process_lost_samples_event(machine, event, sample); 282 } 283 284 int perf_event__process_switch(const struct perf_tool *tool __maybe_unused, 285 union perf_event *event, 286 struct perf_sample *sample __maybe_unused, 287 struct machine *machine) 288 { 289 return machine__process_switch_event(machine, event); 290 } 291 292 int perf_event__process_ksymbol(const struct perf_tool *tool __maybe_unused, 293 union perf_event *event, 294 struct perf_sample *sample __maybe_unused, 295 struct machine *machine) 296 { 297 return machine__process_ksymbol(machine, event, sample); 298 } 299 300 int perf_event__process_bpf(const struct perf_tool *tool __maybe_unused, 301 union perf_event *event, 302 struct perf_sample *sample, 303 struct machine *machine) 304 { 305 return machine__process_bpf(machine, event, sample); 306 } 307 308 int perf_event__process_text_poke(const struct perf_tool *tool __maybe_unused, 309 union perf_event *event, 310 struct perf_sample *sample, 311 struct machine *machine) 312 { 313 return machine__process_text_poke(machine, event, sample); 314 } 315 316 size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp) 317 { 318 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 "]: %c %s\n", 319 event->mmap.pid, event->mmap.tid, event->mmap.start, 320 event->mmap.len, event->mmap.pgoff, 321 (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x', 322 event->mmap.filename); 323 } 324 325 size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp) 326 { 327 if (event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) { 328 char sbuild_id[SBUILD_ID_SIZE]; 329 struct build_id bid; 330 331 build_id__init(&bid, event->mmap2.build_id, 332 event->mmap2.build_id_size); 333 build_id__sprintf(&bid, sbuild_id); 334 335 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 336 " <%s>]: %c%c%c%c %s\n", 337 event->mmap2.pid, event->mmap2.tid, event->mmap2.start, 338 event->mmap2.len, event->mmap2.pgoff, sbuild_id, 339 (event->mmap2.prot & PROT_READ) ? 'r' : '-', 340 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-', 341 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-', 342 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p', 343 event->mmap2.filename); 344 } else { 345 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 346 " %02x:%02x %"PRI_lu64" %"PRI_lu64"]: %c%c%c%c %s\n", 347 event->mmap2.pid, event->mmap2.tid, event->mmap2.start, 348 event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj, 349 event->mmap2.min, event->mmap2.ino, 350 event->mmap2.ino_generation, 351 (event->mmap2.prot & PROT_READ) ? 'r' : '-', 352 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-', 353 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-', 354 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p', 355 event->mmap2.filename); 356 } 357 } 358 359 size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp) 360 { 361 struct perf_thread_map *threads = thread_map__new_event(&event->thread_map); 362 size_t ret; 363 364 ret = fprintf(fp, " nr: "); 365 366 if (threads) 367 ret += thread_map__fprintf(threads, fp); 368 else 369 ret += fprintf(fp, "failed to get threads from event\n"); 370 371 perf_thread_map__put(threads); 372 return ret; 373 } 374 375 size_t perf_event__fprintf_cpu_map(union perf_event *event, FILE *fp) 376 { 377 struct perf_cpu_map *cpus = cpu_map__new_data(&event->cpu_map.data); 378 size_t ret; 379 380 ret = fprintf(fp, ": "); 381 382 if (cpus) 383 ret += cpu_map__fprintf(cpus, fp); 384 else 385 ret += fprintf(fp, "failed to get cpumap from event\n"); 386 387 perf_cpu_map__put(cpus); 388 return ret; 389 } 390 391 int perf_event__process_mmap(const struct perf_tool *tool __maybe_unused, 392 union perf_event *event, 393 struct perf_sample *sample, 394 struct machine *machine) 395 { 396 return machine__process_mmap_event(machine, event, sample); 397 } 398 399 int perf_event__process_mmap2(const struct perf_tool *tool __maybe_unused, 400 union perf_event *event, 401 struct perf_sample *sample, 402 struct machine *machine) 403 { 404 return machine__process_mmap2_event(machine, event, sample); 405 } 406 407 size_t perf_event__fprintf_task(union perf_event *event, FILE *fp) 408 { 409 return fprintf(fp, "(%d:%d):(%d:%d)\n", 410 event->fork.pid, event->fork.tid, 411 event->fork.ppid, event->fork.ptid); 412 } 413 414 int perf_event__process_fork(const struct perf_tool *tool __maybe_unused, 415 union perf_event *event, 416 struct perf_sample *sample, 417 struct machine *machine) 418 { 419 return machine__process_fork_event(machine, event, sample); 420 } 421 422 int perf_event__process_exit(const struct perf_tool *tool __maybe_unused, 423 union perf_event *event, 424 struct perf_sample *sample, 425 struct machine *machine) 426 { 427 return machine__process_exit_event(machine, event, sample); 428 } 429 430 int perf_event__exit_del_thread(const struct perf_tool *tool __maybe_unused, 431 union perf_event *event, 432 struct perf_sample *sample __maybe_unused, 433 struct machine *machine) 434 { 435 struct thread *thread = machine__findnew_thread(machine, 436 event->fork.pid, 437 event->fork.tid); 438 439 dump_printf("(%d:%d):(%d:%d)\n", event->fork.pid, event->fork.tid, 440 event->fork.ppid, event->fork.ptid); 441 442 if (thread) { 443 machine__remove_thread(machine, thread); 444 thread__put(thread); 445 } 446 447 return 0; 448 } 449 450 size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp) 451 { 452 return fprintf(fp, " offset: %#"PRI_lx64" size: %#"PRI_lx64" flags: %#"PRI_lx64" [%s%s%s%s]\n", 453 event->aux.aux_offset, event->aux.aux_size, 454 event->aux.flags, 455 event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "", 456 event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "", 457 event->aux.flags & PERF_AUX_FLAG_PARTIAL ? "P" : "", 458 event->aux.flags & PERF_AUX_FLAG_COLLISION ? "C" : ""); 459 } 460 461 size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp) 462 { 463 return fprintf(fp, " pid: %u tid: %u\n", 464 event->itrace_start.pid, event->itrace_start.tid); 465 } 466 467 size_t perf_event__fprintf_aux_output_hw_id(union perf_event *event, FILE *fp) 468 { 469 return fprintf(fp, " hw_id: %#"PRI_lx64"\n", 470 event->aux_output_hw_id.hw_id); 471 } 472 473 size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp) 474 { 475 bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT; 476 const char *in_out = !out ? "IN " : 477 !(event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT) ? 478 "OUT " : "OUT preempt"; 479 480 if (event->header.type == PERF_RECORD_SWITCH) 481 return fprintf(fp, " %s\n", in_out); 482 483 return fprintf(fp, " %s %s pid/tid: %5d/%-5d\n", 484 in_out, out ? "next" : "prev", 485 event->context_switch.next_prev_pid, 486 event->context_switch.next_prev_tid); 487 } 488 489 static size_t perf_event__fprintf_lost(union perf_event *event, FILE *fp) 490 { 491 return fprintf(fp, " lost %" PRI_lu64 "\n", event->lost.lost); 492 } 493 494 size_t perf_event__fprintf_ksymbol(union perf_event *event, FILE *fp) 495 { 496 return fprintf(fp, " addr %" PRI_lx64 " len %u type %u flags 0x%x name %s\n", 497 event->ksymbol.addr, event->ksymbol.len, 498 event->ksymbol.ksym_type, 499 event->ksymbol.flags, event->ksymbol.name); 500 } 501 502 size_t perf_event__fprintf_bpf(union perf_event *event, FILE *fp) 503 { 504 return fprintf(fp, " type %u, flags %u, id %u\n", 505 event->bpf.type, event->bpf.flags, event->bpf.id); 506 } 507 508 static int text_poke_printer(enum binary_printer_ops op, unsigned int val, 509 void *extra, FILE *fp) 510 { 511 bool old = *(bool *)extra; 512 513 switch ((int)op) { 514 case BINARY_PRINT_LINE_BEGIN: 515 return fprintf(fp, " %s bytes:", old ? "Old" : "New"); 516 case BINARY_PRINT_NUM_DATA: 517 return fprintf(fp, " %02x", val); 518 case BINARY_PRINT_LINE_END: 519 return fprintf(fp, "\n"); 520 default: 521 return 0; 522 } 523 } 524 525 size_t perf_event__fprintf_text_poke(union perf_event *event, struct machine *machine, FILE *fp) 526 { 527 struct perf_record_text_poke_event *tp = &event->text_poke; 528 size_t ret; 529 bool old; 530 531 ret = fprintf(fp, " %" PRI_lx64 " ", tp->addr); 532 if (machine) { 533 struct addr_location al; 534 535 addr_location__init(&al); 536 al.map = maps__find(machine__kernel_maps(machine), tp->addr); 537 if (al.map && map__load(al.map) >= 0) { 538 al.addr = map__map_ip(al.map, tp->addr); 539 al.sym = map__find_symbol(al.map, al.addr); 540 if (al.sym) 541 ret += symbol__fprintf_symname_offs(al.sym, &al, fp); 542 } 543 addr_location__exit(&al); 544 } 545 ret += fprintf(fp, " old len %u new len %u\n", tp->old_len, tp->new_len); 546 old = true; 547 ret += binary__fprintf(tp->bytes, tp->old_len, 16, text_poke_printer, 548 &old, fp); 549 old = false; 550 ret += binary__fprintf(tp->bytes + tp->old_len, tp->new_len, 16, 551 text_poke_printer, &old, fp); 552 return ret; 553 } 554 555 size_t perf_event__fprintf(union perf_event *event, struct machine *machine, FILE *fp) 556 { 557 size_t ret = fprintf(fp, "PERF_RECORD_%s", 558 perf_event__name(event->header.type)); 559 560 switch (event->header.type) { 561 case PERF_RECORD_COMM: 562 ret += perf_event__fprintf_comm(event, fp); 563 break; 564 case PERF_RECORD_FORK: 565 case PERF_RECORD_EXIT: 566 ret += perf_event__fprintf_task(event, fp); 567 break; 568 case PERF_RECORD_MMAP: 569 ret += perf_event__fprintf_mmap(event, fp); 570 break; 571 case PERF_RECORD_NAMESPACES: 572 ret += perf_event__fprintf_namespaces(event, fp); 573 break; 574 case PERF_RECORD_CGROUP: 575 ret += perf_event__fprintf_cgroup(event, fp); 576 break; 577 case PERF_RECORD_MMAP2: 578 ret += perf_event__fprintf_mmap2(event, fp); 579 break; 580 case PERF_RECORD_AUX: 581 ret += perf_event__fprintf_aux(event, fp); 582 break; 583 case PERF_RECORD_ITRACE_START: 584 ret += perf_event__fprintf_itrace_start(event, fp); 585 break; 586 case PERF_RECORD_SWITCH: 587 case PERF_RECORD_SWITCH_CPU_WIDE: 588 ret += perf_event__fprintf_switch(event, fp); 589 break; 590 case PERF_RECORD_LOST: 591 ret += perf_event__fprintf_lost(event, fp); 592 break; 593 case PERF_RECORD_KSYMBOL: 594 ret += perf_event__fprintf_ksymbol(event, fp); 595 break; 596 case PERF_RECORD_BPF_EVENT: 597 ret += perf_event__fprintf_bpf(event, fp); 598 break; 599 case PERF_RECORD_TEXT_POKE: 600 ret += perf_event__fprintf_text_poke(event, machine, fp); 601 break; 602 case PERF_RECORD_AUX_OUTPUT_HW_ID: 603 ret += perf_event__fprintf_aux_output_hw_id(event, fp); 604 break; 605 default: 606 ret += fprintf(fp, "\n"); 607 } 608 609 return ret; 610 } 611 612 int perf_event__process(const struct perf_tool *tool __maybe_unused, 613 union perf_event *event, 614 struct perf_sample *sample, 615 struct machine *machine) 616 { 617 return machine__process_event(machine, event, sample); 618 } 619 620 struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr, 621 struct addr_location *al) 622 { 623 struct maps *maps = thread__maps(thread); 624 struct machine *machine = maps__machine(maps); 625 bool load_map = false; 626 627 maps__zput(al->maps); 628 map__zput(al->map); 629 thread__zput(al->thread); 630 al->thread = thread__get(thread); 631 632 al->addr = addr; 633 al->cpumode = cpumode; 634 al->filtered = 0; 635 636 if (machine == NULL) 637 return NULL; 638 639 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { 640 al->level = 'k'; 641 maps = machine__kernel_maps(machine); 642 load_map = !symbol_conf.lazy_load_kernel_maps; 643 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { 644 al->level = '.'; 645 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { 646 al->level = 'g'; 647 maps = machine__kernel_maps(machine); 648 load_map = !symbol_conf.lazy_load_kernel_maps; 649 } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) { 650 al->level = 'u'; 651 } else { 652 al->level = 'H'; 653 654 if ((cpumode == PERF_RECORD_MISC_GUEST_USER || 655 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && 656 !perf_guest) 657 al->filtered |= (1 << HIST_FILTER__GUEST); 658 if ((cpumode == PERF_RECORD_MISC_USER || 659 cpumode == PERF_RECORD_MISC_KERNEL) && 660 !perf_host) 661 al->filtered |= (1 << HIST_FILTER__HOST); 662 663 return NULL; 664 } 665 al->maps = maps__get(maps); 666 al->map = maps__find(maps, al->addr); 667 if (al->map != NULL) { 668 /* 669 * Kernel maps might be changed when loading symbols so loading 670 * must be done prior to using kernel maps. 671 */ 672 if (load_map) 673 map__load(al->map); 674 al->addr = map__map_ip(al->map, al->addr); 675 } 676 677 return al->map; 678 } 679 680 /* 681 * For branch stacks or branch samples, the sample cpumode might not be correct 682 * because it applies only to the sample 'ip' and not necessary to 'addr' or 683 * branch stack addresses. If possible, use a fallback to deal with those cases. 684 */ 685 struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr, 686 struct addr_location *al) 687 { 688 struct map *map = thread__find_map(thread, cpumode, addr, al); 689 struct machine *machine = maps__machine(thread__maps(thread)); 690 u8 addr_cpumode = machine__addr_cpumode(machine, cpumode, addr); 691 692 if (map || addr_cpumode == cpumode) 693 return map; 694 695 return thread__find_map(thread, addr_cpumode, addr, al); 696 } 697 698 struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode, 699 u64 addr, struct addr_location *al) 700 { 701 al->sym = NULL; 702 if (thread__find_map(thread, cpumode, addr, al)) 703 al->sym = map__find_symbol(al->map, al->addr); 704 return al->sym; 705 } 706 707 struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode, 708 u64 addr, struct addr_location *al) 709 { 710 al->sym = NULL; 711 if (thread__find_map_fb(thread, cpumode, addr, al)) 712 al->sym = map__find_symbol(al->map, al->addr); 713 return al->sym; 714 } 715 716 static bool check_address_range(struct intlist *addr_list, int addr_range, 717 unsigned long addr) 718 { 719 struct int_node *pos; 720 721 intlist__for_each_entry(pos, addr_list) { 722 if (addr >= pos->i && addr < pos->i + addr_range) 723 return true; 724 } 725 726 return false; 727 } 728 729 /* 730 * Callers need to drop the reference to al->thread, obtained in 731 * machine__findnew_thread() 732 */ 733 int machine__resolve(struct machine *machine, struct addr_location *al, 734 struct perf_sample *sample) 735 { 736 struct thread *thread; 737 struct dso *dso; 738 739 if (symbol_conf.guest_code && !machine__is_host(machine)) 740 thread = machine__findnew_guest_code(machine, sample->pid); 741 else 742 thread = machine__findnew_thread(machine, sample->pid, sample->tid); 743 if (thread == NULL) 744 return -1; 745 746 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread__tid(thread)); 747 thread__find_map(thread, sample->cpumode, sample->ip, al); 748 dso = al->map ? map__dso(al->map) : NULL; 749 dump_printf(" ...... dso: %s\n", 750 dso 751 ? dso__long_name(dso) 752 : (al->level == 'H' ? "[hypervisor]" : "<not found>")); 753 754 if (thread__is_filtered(thread)) 755 al->filtered |= (1 << HIST_FILTER__THREAD); 756 757 thread__put(thread); 758 thread = NULL; 759 760 al->sym = NULL; 761 al->cpu = sample->cpu; 762 al->socket = -1; 763 al->srcline = NULL; 764 765 if (al->cpu >= 0) { 766 struct perf_env *env = machine->env; 767 768 if (env && env->cpu) 769 al->socket = env->cpu[al->cpu].socket_id; 770 } 771 772 /* Account for possible out-of-order switch events. */ 773 al->parallelism = max(1, min(machine->parallelism, machine__nr_cpus_avail(machine))); 774 if (test_bit(al->parallelism, symbol_conf.parallelism_filter)) 775 al->filtered |= (1 << HIST_FILTER__PARALLELISM); 776 /* 777 * Multiply it by some const to avoid precision loss or dealing 778 * with floats. The multiplier does not matter otherwise since 779 * we only print it as percents. 780 */ 781 al->latency = sample->period * 1000 / al->parallelism; 782 783 if (al->map) { 784 if (symbol_conf.dso_list && 785 (!dso || !(strlist__has_entry(symbol_conf.dso_list, 786 dso__short_name(dso)) || 787 (dso__short_name(dso) != dso__long_name(dso) && 788 strlist__has_entry(symbol_conf.dso_list, 789 dso__long_name(dso)))))) { 790 al->filtered |= (1 << HIST_FILTER__DSO); 791 } 792 793 al->sym = map__find_symbol(al->map, al->addr); 794 } else if (symbol_conf.dso_list) { 795 al->filtered |= (1 << HIST_FILTER__DSO); 796 } 797 798 if (symbol_conf.sym_list) { 799 int ret = 0; 800 char al_addr_str[32]; 801 size_t sz = sizeof(al_addr_str); 802 803 if (al->sym) { 804 ret = strlist__has_entry(symbol_conf.sym_list, 805 al->sym->name); 806 } 807 if (!ret && al->sym) { 808 snprintf(al_addr_str, sz, "0x%"PRIx64, 809 map__unmap_ip(al->map, al->sym->start)); 810 ret = strlist__has_entry(symbol_conf.sym_list, 811 al_addr_str); 812 } 813 if (!ret && symbol_conf.addr_list && al->map) { 814 unsigned long addr = map__unmap_ip(al->map, al->addr); 815 816 ret = intlist__has_entry(symbol_conf.addr_list, addr); 817 if (!ret && symbol_conf.addr_range) { 818 ret = check_address_range(symbol_conf.addr_list, 819 symbol_conf.addr_range, 820 addr); 821 } 822 } 823 824 if (!ret) 825 al->filtered |= (1 << HIST_FILTER__SYMBOL); 826 } 827 828 return 0; 829 } 830 831 bool is_bts_event(struct perf_event_attr *attr) 832 { 833 return attr->type == PERF_TYPE_HARDWARE && 834 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) && 835 attr->sample_period == 1; 836 } 837 838 bool sample_addr_correlates_sym(struct perf_event_attr *attr) 839 { 840 if (attr->type == PERF_TYPE_SOFTWARE && 841 (attr->config == PERF_COUNT_SW_PAGE_FAULTS || 842 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN || 843 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)) 844 return true; 845 846 if (is_bts_event(attr)) 847 return true; 848 849 return false; 850 } 851 852 void thread__resolve(struct thread *thread, struct addr_location *al, 853 struct perf_sample *sample) 854 { 855 thread__find_map_fb(thread, sample->cpumode, sample->addr, al); 856 857 al->cpu = sample->cpu; 858 al->sym = NULL; 859 860 if (al->map) 861 al->sym = map__find_symbol(al->map, al->addr); 862 } 863