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 38static 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 82const 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 91struct process_symbol_args { 92 const char *name; 93 u64 start; 94}; 95 96static 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 113static 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 125int 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 137int 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 149void 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 174size_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 186size_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 213size_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 219int perf_event__process_comm(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 227int perf_event__process_namespaces(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 235int perf_event__process_cgroup(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 243int perf_event__process_lost(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 251int perf_event__process_aux(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 259int perf_event__process_itrace_start(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 267int perf_event__process_aux_output_hw_id(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 275int perf_event__process_lost_samples(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 283int perf_event__process_switch(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 291int perf_event__process_ksymbol(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 299int perf_event__process_bpf(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 307int perf_event__process_text_poke(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 315size_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 324size_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 358size_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 374size_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 390int perf_event__process_mmap(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 398int perf_event__process_mmap2(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 406size_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 413int perf_event__process_fork(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 421int perf_event__process_exit(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 429size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp) 430{ 431 return fprintf(fp, " offset: %#"PRI_lx64" size: %#"PRI_lx64" flags: %#"PRI_lx64" [%s%s%s]\n", 432 event->aux.aux_offset, event->aux.aux_size, 433 event->aux.flags, 434 event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "", 435 event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "", 436 event->aux.flags & PERF_AUX_FLAG_PARTIAL ? "P" : ""); 437} 438 439size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp) 440{ 441 return fprintf(fp, " pid: %u tid: %u\n", 442 event->itrace_start.pid, event->itrace_start.tid); 443} 444 445size_t perf_event__fprintf_aux_output_hw_id(union perf_event *event, FILE *fp) 446{ 447 return fprintf(fp, " hw_id: %#"PRI_lx64"\n", 448 event->aux_output_hw_id.hw_id); 449} 450 451size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp) 452{ 453 bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT; 454 const char *in_out = !out ? "IN " : 455 !(event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT) ? 456 "OUT " : "OUT preempt"; 457 458 if (event->header.type == PERF_RECORD_SWITCH) 459 return fprintf(fp, " %s\n", in_out); 460 461 return fprintf(fp, " %s %s pid/tid: %5d/%-5d\n", 462 in_out, out ? "next" : "prev", 463 event->context_switch.next_prev_pid, 464 event->context_switch.next_prev_tid); 465} 466 467static size_t perf_event__fprintf_lost(union perf_event *event, FILE *fp) 468{ 469 return fprintf(fp, " lost %" PRI_lu64 "\n", event->lost.lost); 470} 471 472size_t perf_event__fprintf_ksymbol(union perf_event *event, FILE *fp) 473{ 474 return fprintf(fp, " addr %" PRI_lx64 " len %u type %u flags 0x%x name %s\n", 475 event->ksymbol.addr, event->ksymbol.len, 476 event->ksymbol.ksym_type, 477 event->ksymbol.flags, event->ksymbol.name); 478} 479 480size_t perf_event__fprintf_bpf(union perf_event *event, FILE *fp) 481{ 482 return fprintf(fp, " type %u, flags %u, id %u\n", 483 event->bpf.type, event->bpf.flags, event->bpf.id); 484} 485 486static int text_poke_printer(enum binary_printer_ops op, unsigned int val, 487 void *extra, FILE *fp) 488{ 489 bool old = *(bool *)extra; 490 491 switch ((int)op) { 492 case BINARY_PRINT_LINE_BEGIN: 493 return fprintf(fp, " %s bytes:", old ? "Old" : "New"); 494 case BINARY_PRINT_NUM_DATA: 495 return fprintf(fp, " %02x", val); 496 case BINARY_PRINT_LINE_END: 497 return fprintf(fp, "\n"); 498 default: 499 return 0; 500 } 501} 502 503size_t perf_event__fprintf_text_poke(union perf_event *event, struct machine *machine, FILE *fp) 504{ 505 struct perf_record_text_poke_event *tp = &event->text_poke; 506 size_t ret; 507 bool old; 508 509 ret = fprintf(fp, " %" PRI_lx64 " ", tp->addr); 510 if (machine) { 511 struct addr_location al; 512 513 addr_location__init(&al); 514 al.map = maps__find(machine__kernel_maps(machine), tp->addr); 515 if (al.map && map__load(al.map) >= 0) { 516 al.addr = map__map_ip(al.map, tp->addr); 517 al.sym = map__find_symbol(al.map, al.addr); 518 if (al.sym) 519 ret += symbol__fprintf_symname_offs(al.sym, &al, fp); 520 } 521 addr_location__exit(&al); 522 } 523 ret += fprintf(fp, " old len %u new len %u\n", tp->old_len, tp->new_len); 524 old = true; 525 ret += binary__fprintf(tp->bytes, tp->old_len, 16, text_poke_printer, 526 &old, fp); 527 old = false; 528 ret += binary__fprintf(tp->bytes + tp->old_len, tp->new_len, 16, 529 text_poke_printer, &old, fp); 530 return ret; 531} 532 533size_t perf_event__fprintf(union perf_event *event, struct machine *machine, FILE *fp) 534{ 535 size_t ret = fprintf(fp, "PERF_RECORD_%s", 536 perf_event__name(event->header.type)); 537 538 switch (event->header.type) { 539 case PERF_RECORD_COMM: 540 ret += perf_event__fprintf_comm(event, fp); 541 break; 542 case PERF_RECORD_FORK: 543 case PERF_RECORD_EXIT: 544 ret += perf_event__fprintf_task(event, fp); 545 break; 546 case PERF_RECORD_MMAP: 547 ret += perf_event__fprintf_mmap(event, fp); 548 break; 549 case PERF_RECORD_NAMESPACES: 550 ret += perf_event__fprintf_namespaces(event, fp); 551 break; 552 case PERF_RECORD_CGROUP: 553 ret += perf_event__fprintf_cgroup(event, fp); 554 break; 555 case PERF_RECORD_MMAP2: 556 ret += perf_event__fprintf_mmap2(event, fp); 557 break; 558 case PERF_RECORD_AUX: 559 ret += perf_event__fprintf_aux(event, fp); 560 break; 561 case PERF_RECORD_ITRACE_START: 562 ret += perf_event__fprintf_itrace_start(event, fp); 563 break; 564 case PERF_RECORD_SWITCH: 565 case PERF_RECORD_SWITCH_CPU_WIDE: 566 ret += perf_event__fprintf_switch(event, fp); 567 break; 568 case PERF_RECORD_LOST: 569 ret += perf_event__fprintf_lost(event, fp); 570 break; 571 case PERF_RECORD_KSYMBOL: 572 ret += perf_event__fprintf_ksymbol(event, fp); 573 break; 574 case PERF_RECORD_BPF_EVENT: 575 ret += perf_event__fprintf_bpf(event, fp); 576 break; 577 case PERF_RECORD_TEXT_POKE: 578 ret += perf_event__fprintf_text_poke(event, machine, fp); 579 break; 580 case PERF_RECORD_AUX_OUTPUT_HW_ID: 581 ret += perf_event__fprintf_aux_output_hw_id(event, fp); 582 break; 583 default: 584 ret += fprintf(fp, "\n"); 585 } 586 587 return ret; 588} 589 590int perf_event__process(struct perf_tool *tool __maybe_unused, 591 union perf_event *event, 592 struct perf_sample *sample, 593 struct machine *machine) 594{ 595 return machine__process_event(machine, event, sample); 596} 597 598struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr, 599 struct addr_location *al) 600{ 601 struct maps *maps = thread__maps(thread); 602 struct machine *machine = maps__machine(maps); 603 bool load_map = false; 604 605 maps__zput(al->maps); 606 map__zput(al->map); 607 thread__zput(al->thread); 608 al->thread = thread__get(thread); 609 610 al->addr = addr; 611 al->cpumode = cpumode; 612 al->filtered = 0; 613 614 if (machine == NULL) 615 return NULL; 616 617 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { 618 al->level = 'k'; 619 maps = machine__kernel_maps(machine); 620 load_map = !symbol_conf.lazy_load_kernel_maps; 621 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { 622 al->level = '.'; 623 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { 624 al->level = 'g'; 625 maps = machine__kernel_maps(machine); 626 load_map = !symbol_conf.lazy_load_kernel_maps; 627 } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) { 628 al->level = 'u'; 629 } else { 630 al->level = 'H'; 631 632 if ((cpumode == PERF_RECORD_MISC_GUEST_USER || 633 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && 634 !perf_guest) 635 al->filtered |= (1 << HIST_FILTER__GUEST); 636 if ((cpumode == PERF_RECORD_MISC_USER || 637 cpumode == PERF_RECORD_MISC_KERNEL) && 638 !perf_host) 639 al->filtered |= (1 << HIST_FILTER__HOST); 640 641 return NULL; 642 } 643 al->maps = maps__get(maps); 644 al->map = maps__find(maps, al->addr); 645 if (al->map != NULL) { 646 /* 647 * Kernel maps might be changed when loading symbols so loading 648 * must be done prior to using kernel maps. 649 */ 650 if (load_map) 651 map__load(al->map); 652 al->addr = map__map_ip(al->map, al->addr); 653 } 654 655 return al->map; 656} 657 658/* 659 * For branch stacks or branch samples, the sample cpumode might not be correct 660 * because it applies only to the sample 'ip' and not necessary to 'addr' or 661 * branch stack addresses. If possible, use a fallback to deal with those cases. 662 */ 663struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr, 664 struct addr_location *al) 665{ 666 struct map *map = thread__find_map(thread, cpumode, addr, al); 667 struct machine *machine = maps__machine(thread__maps(thread)); 668 u8 addr_cpumode = machine__addr_cpumode(machine, cpumode, addr); 669 670 if (map || addr_cpumode == cpumode) 671 return map; 672 673 return thread__find_map(thread, addr_cpumode, addr, al); 674} 675 676struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode, 677 u64 addr, struct addr_location *al) 678{ 679 al->sym = NULL; 680 if (thread__find_map(thread, cpumode, addr, al)) 681 al->sym = map__find_symbol(al->map, al->addr); 682 return al->sym; 683} 684 685struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode, 686 u64 addr, struct addr_location *al) 687{ 688 al->sym = NULL; 689 if (thread__find_map_fb(thread, cpumode, addr, al)) 690 al->sym = map__find_symbol(al->map, al->addr); 691 return al->sym; 692} 693 694static bool check_address_range(struct intlist *addr_list, int addr_range, 695 unsigned long addr) 696{ 697 struct int_node *pos; 698 699 intlist__for_each_entry(pos, addr_list) { 700 if (addr >= pos->i && addr < pos->i + addr_range) 701 return true; 702 } 703 704 return false; 705} 706 707/* 708 * Callers need to drop the reference to al->thread, obtained in 709 * machine__findnew_thread() 710 */ 711int machine__resolve(struct machine *machine, struct addr_location *al, 712 struct perf_sample *sample) 713{ 714 struct thread *thread; 715 struct dso *dso; 716 717 if (symbol_conf.guest_code && !machine__is_host(machine)) 718 thread = machine__findnew_guest_code(machine, sample->pid); 719 else 720 thread = machine__findnew_thread(machine, sample->pid, sample->tid); 721 if (thread == NULL) 722 return -1; 723 724 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread__tid(thread)); 725 thread__find_map(thread, sample->cpumode, sample->ip, al); 726 dso = al->map ? map__dso(al->map) : NULL; 727 dump_printf(" ...... dso: %s\n", 728 dso 729 ? dso->long_name 730 : (al->level == 'H' ? "[hypervisor]" : "<not found>")); 731 732 if (thread__is_filtered(thread)) 733 al->filtered |= (1 << HIST_FILTER__THREAD); 734 735 thread__put(thread); 736 thread = NULL; 737 738 al->sym = NULL; 739 al->cpu = sample->cpu; 740 al->socket = -1; 741 al->srcline = NULL; 742 743 if (al->cpu >= 0) { 744 struct perf_env *env = machine->env; 745 746 if (env && env->cpu) 747 al->socket = env->cpu[al->cpu].socket_id; 748 } 749 750 if (al->map) { 751 if (symbol_conf.dso_list && 752 (!dso || !(strlist__has_entry(symbol_conf.dso_list, 753 dso->short_name) || 754 (dso->short_name != dso->long_name && 755 strlist__has_entry(symbol_conf.dso_list, 756 dso->long_name))))) { 757 al->filtered |= (1 << HIST_FILTER__DSO); 758 } 759 760 al->sym = map__find_symbol(al->map, al->addr); 761 } else if (symbol_conf.dso_list) { 762 al->filtered |= (1 << HIST_FILTER__DSO); 763 } 764 765 if (symbol_conf.sym_list) { 766 int ret = 0; 767 char al_addr_str[32]; 768 size_t sz = sizeof(al_addr_str); 769 770 if (al->sym) { 771 ret = strlist__has_entry(symbol_conf.sym_list, 772 al->sym->name); 773 } 774 if (!ret && al->sym) { 775 snprintf(al_addr_str, sz, "0x%"PRIx64, 776 map__unmap_ip(al->map, al->sym->start)); 777 ret = strlist__has_entry(symbol_conf.sym_list, 778 al_addr_str); 779 } 780 if (!ret && symbol_conf.addr_list && al->map) { 781 unsigned long addr = map__unmap_ip(al->map, al->addr); 782 783 ret = intlist__has_entry(symbol_conf.addr_list, addr); 784 if (!ret && symbol_conf.addr_range) { 785 ret = check_address_range(symbol_conf.addr_list, 786 symbol_conf.addr_range, 787 addr); 788 } 789 } 790 791 if (!ret) 792 al->filtered |= (1 << HIST_FILTER__SYMBOL); 793 } 794 795 return 0; 796} 797 798bool is_bts_event(struct perf_event_attr *attr) 799{ 800 return attr->type == PERF_TYPE_HARDWARE && 801 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) && 802 attr->sample_period == 1; 803} 804 805bool sample_addr_correlates_sym(struct perf_event_attr *attr) 806{ 807 if (attr->type == PERF_TYPE_SOFTWARE && 808 (attr->config == PERF_COUNT_SW_PAGE_FAULTS || 809 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN || 810 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)) 811 return true; 812 813 if (is_bts_event(attr)) 814 return true; 815 816 return false; 817} 818 819void thread__resolve(struct thread *thread, struct addr_location *al, 820 struct perf_sample *sample) 821{ 822 thread__find_map_fb(thread, sample->cpumode, sample->addr, al); 823 824 al->cpu = sample->cpu; 825 al->sym = NULL; 826 827 if (al->map) 828 al->sym = map__find_symbol(al->map, al->addr); 829} 830