tools/perf/util/event.c

   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 "tool.h"
  35 #include "../perf.h"
  36
  37 static const char *perf_event__names[] = {
  38         [0]                                     = "TOTAL",
  39         [PERF_RECORD_MMAP]                      = "MMAP",
  40         [PERF_RECORD_MMAP2]                     = "MMAP2",
  41         [PERF_RECORD_LOST]                      = "LOST",
  42         [PERF_RECORD_COMM]                      = "COMM",
  43         [PERF_RECORD_EXIT]                      = "EXIT",
  44         [PERF_RECORD_THROTTLE]                  = "THROTTLE",
  45         [PERF_RECORD_UNTHROTTLE]                = "UNTHROTTLE",
  46         [PERF_RECORD_FORK]                      = "FORK",
  47         [PERF_RECORD_READ]                      = "READ",
  48         [PERF_RECORD_SAMPLE]                    = "SAMPLE",
  49         [PERF_RECORD_AUX]                       = "AUX",
  50         [PERF_RECORD_ITRACE_START]              = "ITRACE_START",
  51         [PERF_RECORD_LOST_SAMPLES]              = "LOST_SAMPLES",
  52         [PERF_RECORD_SWITCH]                    = "SWITCH",
  53         [PERF_RECORD_SWITCH_CPU_WIDE]           = "SWITCH_CPU_WIDE",
  54         [PERF_RECORD_NAMESPACES]                = "NAMESPACES",
  55         [PERF_RECORD_KSYMBOL]                   = "KSYMBOL",
  56         [PERF_RECORD_BPF_EVENT]                 = "BPF_EVENT",
  57         [PERF_RECORD_CGROUP]                    = "CGROUP",
  58         [PERF_RECORD_HEADER_ATTR]               = "ATTR",
  59         [PERF_RECORD_HEADER_EVENT_TYPE]         = "EVENT_TYPE",
  60         [PERF_RECORD_HEADER_TRACING_DATA]       = "TRACING_DATA",
  61         [PERF_RECORD_HEADER_BUILD_ID]           = "BUILD_ID",
  62         [PERF_RECORD_FINISHED_ROUND]            = "FINISHED_ROUND",
  63         [PERF_RECORD_ID_INDEX]                  = "ID_INDEX",
  64         [PERF_RECORD_AUXTRACE_INFO]             = "AUXTRACE_INFO",
  65         [PERF_RECORD_AUXTRACE]                  = "AUXTRACE",
  66         [PERF_RECORD_AUXTRACE_ERROR]            = "AUXTRACE_ERROR",
  67         [PERF_RECORD_THREAD_MAP]                = "THREAD_MAP",
  68         [PERF_RECORD_CPU_MAP]                   = "CPU_MAP",
  69         [PERF_RECORD_STAT_CONFIG]               = "STAT_CONFIG",
  70         [PERF_RECORD_STAT]                      = "STAT",
  71         [PERF_RECORD_STAT_ROUND]                = "STAT_ROUND",
  72         [PERF_RECORD_EVENT_UPDATE]              = "EVENT_UPDATE",
  73         [PERF_RECORD_TIME_CONV]                 = "TIME_CONV",
  74         [PERF_RECORD_HEADER_FEATURE]            = "FEATURE",
  75         [PERF_RECORD_COMPRESSED]                = "COMPRESSED",
  76 };
  77
  78 const char *perf_event__name(unsigned int id)
  79 {
  80         if (id >= ARRAY_SIZE(perf_event__names))
  81                 return "INVALID";
  82         if (!perf_event__names[id])
  83                 return "UNKNOWN";
  84         return perf_event__names[id];
  85 }
  86
  87 struct process_symbol_args {
  88         const char *name;
  89         u64        start;
  90 };
  91
  92 static int find_symbol_cb(void *arg, const char *name, char type,
  93                           u64 start)
  94 {
  95         struct process_symbol_args *args = arg;
  96
  97         /*
  98          * Must be a function or at least an alias, as in PARISC64, where "_text" is
  99          * an 'A' to the same address as "_stext".
 100          */
 101         if (!(kallsyms__is_function(type) ||
 102               type == 'A') || strcmp(name, args->name))
 103                 return 0;
 104
 105         args->start = start;
 106         return 1;
 107 }
 108
 109 int kallsyms__get_function_start(const char *kallsyms_filename,
 110                                  const char *symbol_name, u64 *addr)
 111 {
 112         struct process_symbol_args args = { .name = symbol_name, };
 113
 114         if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0)
 115                 return -1;
 116
 117         *addr = args.start;
 118         return 0;
 119 }
 120
 121 void perf_event__read_stat_config(struct perf_stat_config *config,
 122                                   struct perf_record_stat_config *event)
 123 {
 124         unsigned i;
 125
 126         for (i = 0; i < event->nr; i++) {
 127
 128                 switch (event->data[i].tag) {
 129 #define CASE(__term, __val)                                     \
 130                 case PERF_STAT_CONFIG_TERM__##__term:           \
 131                         config->__val = event->data[i].val;     \
 132                         break;
 133
 134                 CASE(AGGR_MODE, aggr_mode)
 135                 CASE(SCALE,     scale)
 136                 CASE(INTERVAL,  interval)
 137 #undef CASE
 138                 default:
 139                         pr_warning("unknown stat config term %" PRI_lu64 "\n",
 140                                    event->data[i].tag);
 141                 }
 142         }
 143 }
 144
 145 size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
 146 {
 147         const char *s;
 148
 149         if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC)
 150                 s = " exec";
 151         else
 152                 s = "";
 153
 154         return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid);
 155 }
 156
 157 size_t perf_event__fprintf_namespaces(union perf_event *event, FILE *fp)
 158 {
 159         size_t ret = 0;
 160         struct perf_ns_link_info *ns_link_info;
 161         u32 nr_namespaces, idx;
 162
 163         ns_link_info = event->namespaces.link_info;
 164         nr_namespaces = event->namespaces.nr_namespaces;
 165
 166         ret += fprintf(fp, " %d/%d - nr_namespaces: %u\n\t\t[",
 167                        event->namespaces.pid,
 168                        event->namespaces.tid,
 169                        nr_namespaces);
 170
 171         for (idx = 0; idx < nr_namespaces; idx++) {
 172                 if (idx && (idx % 4 == 0))
 173                         ret += fprintf(fp, "\n\t\t ");
 174
 175                 ret  += fprintf(fp, "%u/%s: %" PRIu64 "/%#" PRIx64 "%s", idx,
 176                                 perf_ns__name(idx), (u64)ns_link_info[idx].dev,
 177                                 (u64)ns_link_info[idx].ino,
 178                                 ((idx + 1) != nr_namespaces) ? ", " : "]\n");
 179         }
 180
 181         return ret;
 182 }
 183
 184 size_t perf_event__fprintf_cgroup(union perf_event *event, FILE *fp)
 185 {
 186         return fprintf(fp, " cgroup: %" PRI_lu64 " %s\n",
 187                        event->cgroup.id, event->cgroup.path);
 188 }
 189
 190 int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
 191                              union perf_event *event,
 192                              struct perf_sample *sample,
 193                              struct machine *machine)
 194 {
 195         return machine__process_comm_event(machine, event, sample);
 196 }
 197
 198 int perf_event__process_namespaces(struct perf_tool *tool __maybe_unused,
 199                                    union perf_event *event,
 200                                    struct perf_sample *sample,
 201                                    struct machine *machine)
 202 {
 203         return machine__process_namespaces_event(machine, event, sample);
 204 }
 205
 206 int perf_event__process_cgroup(struct perf_tool *tool __maybe_unused,
 207                                union perf_event *event,
 208                                struct perf_sample *sample,
 209                                struct machine *machine)
 210 {
 211         return machine__process_cgroup_event(machine, event, sample);
 212 }
 213
 214 int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
 215                              union perf_event *event,
 216                              struct perf_sample *sample,
 217                              struct machine *machine)
 218 {
 219         return machine__process_lost_event(machine, event, sample);
 220 }
 221
 222 int perf_event__process_aux(struct perf_tool *tool __maybe_unused,
 223                             union perf_event *event,
 224                             struct perf_sample *sample __maybe_unused,
 225                             struct machine *machine)
 226 {
 227         return machine__process_aux_event(machine, event);
 228 }
 229
 230 int perf_event__process_itrace_start(struct perf_tool *tool __maybe_unused,
 231                                      union perf_event *event,
 232                                      struct perf_sample *sample __maybe_unused,
 233                                      struct machine *machine)
 234 {
 235         return machine__process_itrace_start_event(machine, event);
 236 }
 237
 238 int perf_event__process_lost_samples(struct perf_tool *tool __maybe_unused,
 239                                      union perf_event *event,
 240                                      struct perf_sample *sample,
 241                                      struct machine *machine)
 242 {
 243         return machine__process_lost_samples_event(machine, event, sample);
 244 }
 245
 246 int perf_event__process_switch(struct perf_tool *tool __maybe_unused,
 247                                union perf_event *event,
 248                                struct perf_sample *sample __maybe_unused,
 249                                struct machine *machine)
 250 {
 251         return machine__process_switch_event(machine, event);
 252 }
 253
 254 int perf_event__process_ksymbol(struct perf_tool *tool __maybe_unused,
 255                                 union perf_event *event,
 256                                 struct perf_sample *sample __maybe_unused,
 257                                 struct machine *machine)
 258 {
 259         return machine__process_ksymbol(machine, event, sample);
 260 }
 261
 262 int perf_event__process_bpf(struct perf_tool *tool __maybe_unused,
 263                             union perf_event *event,
 264                             struct perf_sample *sample,
 265                             struct machine *machine)
 266 {
 267         return machine__process_bpf(machine, event, sample);
 268 }
 269
 270 size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
 271 {
 272         return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 "]: %c %s\n",
 273                        event->mmap.pid, event->mmap.tid, event->mmap.start,
 274                        event->mmap.len, event->mmap.pgoff,
 275                        (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
 276                        event->mmap.filename);
 277 }
 278
 279 size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
 280 {
 281         return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64
 282                            " %02x:%02x %"PRI_lu64" %"PRI_lu64"]: %c%c%c%c %s\n",
 283                        event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
 284                        event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj,
 285                        event->mmap2.min, event->mmap2.ino,
 286                        event->mmap2.ino_generation,
 287                        (event->mmap2.prot & PROT_READ) ? 'r' : '-',
 288                        (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
 289                        (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
 290                        (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
 291                        event->mmap2.filename);
 292 }
 293
 294 size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp)
 295 {
 296         struct perf_thread_map *threads = thread_map__new_event(&event->thread_map);
 297         size_t ret;
 298
 299         ret = fprintf(fp, " nr: ");
 300
 301         if (threads)
 302                 ret += thread_map__fprintf(threads, fp);
 303         else
 304                 ret += fprintf(fp, "failed to get threads from event\n");
 305
 306         perf_thread_map__put(threads);
 307         return ret;
 308 }
 309
 310 size_t perf_event__fprintf_cpu_map(union perf_event *event, FILE *fp)
 311 {
 312         struct perf_cpu_map *cpus = cpu_map__new_data(&event->cpu_map.data);
 313         size_t ret;
 314
 315         ret = fprintf(fp, ": ");
 316
 317         if (cpus)
 318                 ret += cpu_map__fprintf(cpus, fp);
 319         else
 320                 ret += fprintf(fp, "failed to get cpumap from event\n");
 321
 322         perf_cpu_map__put(cpus);
 323         return ret;
 324 }
 325
 326 int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
 327                              union perf_event *event,
 328                              struct perf_sample *sample,
 329                              struct machine *machine)
 330 {
 331         return machine__process_mmap_event(machine, event, sample);
 332 }
 333
 334 int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused,
 335                              union perf_event *event,
 336                              struct perf_sample *sample,
 337                              struct machine *machine)
 338 {
 339         return machine__process_mmap2_event(machine, event, sample);
 340 }
 341
 342 size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
 343 {
 344         return fprintf(fp, "(%d:%d):(%d:%d)\n",
 345                        event->fork.pid, event->fork.tid,
 346                        event->fork.ppid, event->fork.ptid);
 347 }
 348
 349 int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
 350                              union perf_event *event,
 351                              struct perf_sample *sample,
 352                              struct machine *machine)
 353 {
 354         return machine__process_fork_event(machine, event, sample);
 355 }
 356
 357 int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
 358                              union perf_event *event,
 359                              struct perf_sample *sample,
 360                              struct machine *machine)
 361 {
 362         return machine__process_exit_event(machine, event, sample);
 363 }
 364
 365 size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp)
 366 {
 367         return fprintf(fp, " offset: %#"PRI_lx64" size: %#"PRI_lx64" flags: %#"PRI_lx64" [%s%s%s]\n",
 368                        event->aux.aux_offset, event->aux.aux_size,
 369                        event->aux.flags,
 370                        event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "",
 371                        event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "",
 372                        event->aux.flags & PERF_AUX_FLAG_PARTIAL   ? "P" : "");
 373 }
 374
 375 size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp)
 376 {
 377         return fprintf(fp, " pid: %u tid: %u\n",
 378                        event->itrace_start.pid, event->itrace_start.tid);
 379 }
 380
 381 size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp)
 382 {
 383         bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
 384         const char *in_out = !out ? "IN         " :
 385                 !(event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT) ?
 386                                     "OUT        " : "OUT preempt";
 387
 388         if (event->header.type == PERF_RECORD_SWITCH)
 389                 return fprintf(fp, " %s\n", in_out);
 390
 391         return fprintf(fp, " %s  %s pid/tid: %5u/%-5u\n",
 392                        in_out, out ? "next" : "prev",
 393                        event->context_switch.next_prev_pid,
 394                        event->context_switch.next_prev_tid);
 395 }
 396
 397 static size_t perf_event__fprintf_lost(union perf_event *event, FILE *fp)
 398 {
 399         return fprintf(fp, " lost %" PRI_lu64 "\n", event->lost.lost);
 400 }
 401
 402 size_t perf_event__fprintf_ksymbol(union perf_event *event, FILE *fp)
 403 {
 404         return fprintf(fp, " addr %" PRI_lx64 " len %u type %u flags 0x%x name %s\n",
 405                        event->ksymbol.addr, event->ksymbol.len,
 406                        event->ksymbol.ksym_type,
 407                        event->ksymbol.flags, event->ksymbol.name);
 408 }
 409
 410 size_t perf_event__fprintf_bpf(union perf_event *event, FILE *fp)
 411 {
 412         return fprintf(fp, " type %u, flags %u, id %u\n",
 413                        event->bpf.type, event->bpf.flags, event->bpf.id);
 414 }
 415
 416 size_t perf_event__fprintf(union perf_event *event, FILE *fp)
 417 {
 418         size_t ret = fprintf(fp, "PERF_RECORD_%s",
 419                              perf_event__name(event->header.type));
 420
 421         switch (event->header.type) {
 422         case PERF_RECORD_COMM:
 423                 ret += perf_event__fprintf_comm(event, fp);
 424                 break;
 425         case PERF_RECORD_FORK:
 426         case PERF_RECORD_EXIT:
 427                 ret += perf_event__fprintf_task(event, fp);
 428                 break;
 429         case PERF_RECORD_MMAP:
 430                 ret += perf_event__fprintf_mmap(event, fp);
 431                 break;
 432         case PERF_RECORD_NAMESPACES:
 433                 ret += perf_event__fprintf_namespaces(event, fp);
 434                 break;
 435         case PERF_RECORD_CGROUP:
 436                 ret += perf_event__fprintf_cgroup(event, fp);
 437                 break;
 438         case PERF_RECORD_MMAP2:
 439                 ret += perf_event__fprintf_mmap2(event, fp);
 440                 break;
 441         case PERF_RECORD_AUX:
 442                 ret += perf_event__fprintf_aux(event, fp);
 443                 break;
 444         case PERF_RECORD_ITRACE_START:
 445                 ret += perf_event__fprintf_itrace_start(event, fp);
 446                 break;
 447         case PERF_RECORD_SWITCH:
 448         case PERF_RECORD_SWITCH_CPU_WIDE:
 449                 ret += perf_event__fprintf_switch(event, fp);
 450                 break;
 451         case PERF_RECORD_LOST:
 452                 ret += perf_event__fprintf_lost(event, fp);
 453                 break;
 454         case PERF_RECORD_KSYMBOL:
 455                 ret += perf_event__fprintf_ksymbol(event, fp);
 456                 break;
 457         case PERF_RECORD_BPF_EVENT:
 458                 ret += perf_event__fprintf_bpf(event, fp);
 459                 break;
 460         default:
 461                 ret += fprintf(fp, "\n");
 462         }
 463
 464         return ret;
 465 }
 466
 467 int perf_event__process(struct perf_tool *tool __maybe_unused,
 468                         union perf_event *event,
 469                         struct perf_sample *sample,
 470                         struct machine *machine)
 471 {
 472         return machine__process_event(machine, event, sample);
 473 }
 474
 475 struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr,
 476                              struct addr_location *al)
 477 {
 478         struct maps *maps = thread->maps;
 479         struct machine *machine = maps->machine;
 480         bool load_map = false;
 481
 482         al->maps = maps;
 483         al->thread = thread;
 484         al->addr = addr;
 485         al->cpumode = cpumode;
 486         al->filtered = 0;
 487
 488         if (machine == NULL) {
 489                 al->map = NULL;
 490                 return NULL;
 491         }
 492
 493         if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
 494                 al->level = 'k';
 495                 al->maps = maps = &machine->kmaps;
 496                 load_map = true;
 497         } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
 498                 al->level = '.';
 499         } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
 500                 al->level = 'g';
 501                 al->maps = maps = &machine->kmaps;
 502                 load_map = true;
 503         } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) {
 504                 al->level = 'u';
 505         } else {
 506                 al->level = 'H';
 507                 al->map = NULL;
 508
 509                 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
 510                         cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
 511                         !perf_guest)
 512                         al->filtered |= (1 << HIST_FILTER__GUEST);
 513                 if ((cpumode == PERF_RECORD_MISC_USER ||
 514                         cpumode == PERF_RECORD_MISC_KERNEL) &&
 515                         !perf_host)
 516                         al->filtered |= (1 << HIST_FILTER__HOST);
 517
 518                 return NULL;
 519         }
 520
 521         al->map = maps__find(maps, al->addr);
 522         if (al->map != NULL) {
 523                 /*
 524                  * Kernel maps might be changed when loading symbols so loading
 525                  * must be done prior to using kernel maps.
 526                  */
 527                 if (load_map)
 528                         map__load(al->map);
 529                 al->addr = al->map->map_ip(al->map, al->addr);
 530         }
 531
 532         return al->map;
 533 }
 534
 535 /*
 536  * For branch stacks or branch samples, the sample cpumode might not be correct
 537  * because it applies only to the sample 'ip' and not necessary to 'addr' or
 538  * branch stack addresses. If possible, use a fallback to deal with those cases.
 539  */
 540 struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr,
 541                                 struct addr_location *al)
 542 {
 543         struct map *map = thread__find_map(thread, cpumode, addr, al);
 544         struct machine *machine = thread->maps->machine;
 545         u8 addr_cpumode = machine__addr_cpumode(machine, cpumode, addr);
 546
 547         if (map || addr_cpumode == cpumode)
 548                 return map;
 549
 550         return thread__find_map(thread, addr_cpumode, addr, al);
 551 }
 552
 553 struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode,
 554                                    u64 addr, struct addr_location *al)
 555 {
 556         al->sym = NULL;
 557         if (thread__find_map(thread, cpumode, addr, al))
 558                 al->sym = map__find_symbol(al->map, al->addr);
 559         return al->sym;
 560 }
 561
 562 struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode,
 563                                       u64 addr, struct addr_location *al)
 564 {
 565         al->sym = NULL;
 566         if (thread__find_map_fb(thread, cpumode, addr, al))
 567                 al->sym = map__find_symbol(al->map, al->addr);
 568         return al->sym;
 569 }
 570
 571 /*
 572  * Callers need to drop the reference to al->thread, obtained in
 573  * machine__findnew_thread()
 574  */
 575 int machine__resolve(struct machine *machine, struct addr_location *al,
 576                      struct perf_sample *sample)
 577 {
 578         struct thread *thread = machine__findnew_thread(machine, sample->pid,
 579                                                         sample->tid);
 580
 581         if (thread == NULL)
 582                 return -1;
 583
 584         dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
 585         thread__find_map(thread, sample->cpumode, sample->ip, al);
 586         dump_printf(" ...... dso: %s\n",
 587                     al->map ? al->map->dso->long_name :
 588                         al->level == 'H' ? "[hypervisor]" : "<not found>");
 589
 590         if (thread__is_filtered(thread))
 591                 al->filtered |= (1 << HIST_FILTER__THREAD);
 592
 593         al->sym = NULL;
 594         al->cpu = sample->cpu;
 595         al->socket = -1;
 596         al->srcline = NULL;
 597
 598         if (al->cpu >= 0) {
 599                 struct perf_env *env = machine->env;
 600
 601                 if (env && env->cpu)
 602                         al->socket = env->cpu[al->cpu].socket_id;
 603         }
 604
 605         if (al->map) {
 606                 struct dso *dso = al->map->dso;
 607
 608                 if (symbol_conf.dso_list &&
 609                     (!dso || !(strlist__has_entry(symbol_conf.dso_list,
 610                                                   dso->short_name) ||
 611                                (dso->short_name != dso->long_name &&
 612                                 strlist__has_entry(symbol_conf.dso_list,
 613                                                    dso->long_name))))) {
 614                         al->filtered |= (1 << HIST_FILTER__DSO);
 615                 }
 616
 617                 al->sym = map__find_symbol(al->map, al->addr);
 618         }
 619
 620         if (symbol_conf.sym_list) {
 621                 int ret = 0;
 622                 char al_addr_str[32];
 623                 size_t sz = sizeof(al_addr_str);
 624
 625                 if (al->sym) {
 626                         ret = strlist__has_entry(symbol_conf.sym_list,
 627                                                 al->sym->name);
 628                 }
 629                 if (!(ret && al->sym)) {
 630                         snprintf(al_addr_str, sz, "0x%"PRIx64,
 631                                 al->map->unmap_ip(al->map, al->sym->start));
 632                         ret = strlist__has_entry(symbol_conf.sym_list,
 633                                                 al_addr_str);
 634                 }
 635                 if (!ret)
 636                         al->filtered |= (1 << HIST_FILTER__SYMBOL);
 637         }
 638
 639         return 0;
 640 }
 641
 642 /*
 643  * The preprocess_sample method will return with reference counts for the
 644  * in it, when done using (and perhaps getting ref counts if needing to
 645  * keep a pointer to one of those entries) it must be paired with
 646  * addr_location__put(), so that the refcounts can be decremented.
 647  */
 648 void addr_location__put(struct addr_location *al)
 649 {
 650         thread__zput(al->thread);
 651 }
 652
 653 bool is_bts_event(struct perf_event_attr *attr)
 654 {
 655         return attr->type == PERF_TYPE_HARDWARE &&
 656                (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
 657                attr->sample_period == 1;
 658 }
 659
 660 bool sample_addr_correlates_sym(struct perf_event_attr *attr)
 661 {
 662         if (attr->type == PERF_TYPE_SOFTWARE &&
 663             (attr->config == PERF_COUNT_SW_PAGE_FAULTS ||
 664              attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
 665              attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ))
 666                 return true;
 667
 668         if (is_bts_event(attr))
 669                 return true;
 670
 671         return false;
 672 }
 673
 674 void thread__resolve(struct thread *thread, struct addr_location *al,
 675                      struct perf_sample *sample)
 676 {
 677         thread__find_map_fb(thread, sample->cpumode, sample->addr, al);
 678
 679         al->cpu = sample->cpu;
 680         al->sym = NULL;
 681
 682         if (al->map)
 683                 al->sym = map__find_symbol(al->map, al->addr);
 684 }