linux/tools/perf/util/event.c
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   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
  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_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
  80const 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
  89struct process_symbol_args {
  90        const char *name;
  91        u64        start;
  92};
  93
  94static 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
 111int 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
 123void 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
 147size_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
 159size_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
 186size_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
 192int 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
 200int 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
 208int 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
 216int 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
 224int 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
 232int 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
 240int 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
 248int 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
 256int 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
 264int 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
 272int 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
 280size_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
 289size_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
 304size_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
 320size_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
 336int 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
 344int 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
 352size_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
 359int 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
 367int 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
 375size_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
 385size_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
 391size_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
 407static 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
 412size_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
 420size_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
 426static 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
 443size_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
 471size_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
 525int 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
 533struct 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 */
 598struct 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
 611struct 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
 620struct 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 */
 633int 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 */
 706void addr_location__put(struct addr_location *al)
 707{
 708        thread__zput(al->thread);
 709}
 710
 711bool 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
 718bool 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
 732void 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