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 "print_binary.h"
  35 #include "tool.h"
  36 #include "../perf.h"
  37
  38 static const char *perf_event__names[] = {
  39         [0]                                     = "TOTAL",
  40         [PERF_RECORD_MMAP]                      = "MMAP",
  41         [PERF_RECORD_MMAP2]                     = "MMAP2",
  42         [PERF_RECORD_LOST]                      = "LOST",
  43         [PERF_RECORD_COMM]                      = "COMM",
  44         [PERF_RECORD_EXIT]                      = "EXIT",
  45         [PERF_RECORD_THROTTLE]                  = "THROTTLE",
  46         [PERF_RECORD_UNTHROTTLE]                = "UNTHROTTLE",
  47         [PERF_RECORD_FORK]                      = "FORK",
  48         [PERF_RECORD_READ]                      = "READ",
  49         [PERF_RECORD_SAMPLE]                    = "SAMPLE",
  50         [PERF_RECORD_AUX]                       = "AUX",
  51         [PERF_RECORD_ITRACE_START]              = "ITRACE_START",
  52         [PERF_RECORD_LOST_SAMPLES]              = "LOST_SAMPLES",
  53         [PERF_RECORD_SWITCH]                    = "SWITCH",
  54         [PERF_RECORD_SWITCH_CPU_WIDE]           = "SWITCH_CPU_WIDE",
  55         [PERF_RECORD_NAMESPACES]                = "NAMESPACES",
  56         [PERF_RECORD_KSYMBOL]                   = "KSYMBOL",
  57         [PERF_RECORD_BPF_EVENT]                 = "BPF_EVENT",
  58         [PERF_RECORD_CGROUP]                    = "CGROUP",
  59         [PERF_RECORD_TEXT_POKE]                 = "TEXT_POKE",
  60         [PERF_RECORD_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 };
  80
  81 const char *perf_event__name(unsigned int id)
  82 {
  83         if (id >= ARRAY_SIZE(perf_event__names))
  84                 return "INVALID";
  85         if (!perf_event__names[id])
  86                 return "UNKNOWN";
  87         return perf_event__names[id];
  88 }
  89
  90 struct process_symbol_args {
  91         const char *name;
  92         u64        start;
  93 };
  94
  95 static int find_symbol_cb(void *arg, const char *name, char type,
  96                           u64 start)
  97 {
  98         struct process_symbol_args *args = arg;
  99
 100         /*
 101          * Must be a function or at least an alias, as in PARISC64, where "_text" is
 102          * an 'A' to the same address as "_stext".
 103          */
 104         if (!(kallsyms__is_function(type) ||
 105               type == 'A') || strcmp(name, args->name))
 106                 return 0;
 107
 108         args->start = start;
 109         return 1;
 110 }
 111
 112 int kallsyms__get_function_start(const char *kallsyms_filename,
 113                                  const char *symbol_name, u64 *addr)
 114 {
 115         struct process_symbol_args args = { .name = symbol_name, };
 116
 117         if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0)
 118                 return -1;
 119
 120         *addr = args.start;
 121         return 0;
 122 }
 123
 124 void perf_event__read_stat_config(struct perf_stat_config *config,
 125                                   struct perf_record_stat_config *event)
 126 {
 127         unsigned i;
 128
 129         for (i = 0; i < event->nr; i++) {
 130
 131                 switch (event->data[i].tag) {
 132 #define CASE(__term, __val)                                     \
 133                 case PERF_STAT_CONFIG_TERM__##__term:           \
 134                         config->__val = event->data[i].val;     \
 135                         break;
 136
 137                 CASE(AGGR_MODE, aggr_mode)
 138                 CASE(SCALE,     scale)
 139                 CASE(INTERVAL,  interval)
 140 #undef CASE
 141                 default:
 142                         pr_warning("unknown stat config term %" PRI_lu64 "\n",
 143                                    event->data[i].tag);
 144                 }
 145         }
 146 }
 147
 148 size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
 149 {
 150         const char *s;
 151
 152         if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC)
 153                 s = " exec";
 154         else
 155                 s = "";
 156
 157         return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid);
 158 }
 159
 160 size_t perf_event__fprintf_namespaces(union perf_event *event, FILE *fp)
 161 {
 162         size_t ret = 0;
 163         struct perf_ns_link_info *ns_link_info;
 164         u32 nr_namespaces, idx;
 165
 166         ns_link_info = event->namespaces.link_info;
 167         nr_namespaces = event->namespaces.nr_namespaces;
 168
 169         ret += fprintf(fp, " %d/%d - nr_namespaces: %u\n\t\t[",
 170                        event->namespaces.pid,
 171                        event->namespaces.tid,
 172                        nr_namespaces);
 173
 174         for (idx = 0; idx < nr_namespaces; idx++) {
 175                 if (idx && (idx % 4 == 0))
 176                         ret += fprintf(fp, "\n\t\t ");
 177
 178                 ret  += fprintf(fp, "%u/%s: %" PRIu64 "/%#" PRIx64 "%s", idx,
 179                                 perf_ns__name(idx), (u64)ns_link_info[idx].dev,
 180                                 (u64)ns_link_info[idx].ino,
 181                                 ((idx + 1) != nr_namespaces) ? ", " : "]\n");
 182         }
 183
 184         return ret;
 185 }
 186
 187 size_t perf_event__fprintf_cgroup(union perf_event *event, FILE *fp)
 188 {
 189         return fprintf(fp, " cgroup: %" PRI_lu64 " %s\n",
 190                        event->cgroup.id, event->cgroup.path);
 191 }
 192
 193 int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
 194                              union perf_event *event,
 195                              struct perf_sample *sample,
 196                              struct machine *machine)
 197 {
 198         return machine__process_comm_event(machine, event, sample);
 199 }
 200
 201 int perf_event__process_namespaces(struct perf_tool *tool __maybe_unused,
 202                                    union perf_event *event,
 203                                    struct perf_sample *sample,
 204                                    struct machine *machine)
 205 {
 206         return machine__process_namespaces_event(machine, event, sample);
 207 }
 208
 209 int perf_event__process_cgroup(struct perf_tool *tool __maybe_unused,
 210                                union perf_event *event,
 211                                struct perf_sample *sample,
 212                                struct machine *machine)
 213 {
 214         return machine__process_cgroup_event(machine, event, sample);
 215 }
 216
 217 int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
 218                              union perf_event *event,
 219                              struct perf_sample *sample,
 220                              struct machine *machine)
 221 {
 222         return machine__process_lost_event(machine, event, sample);
 223 }
 224
 225 int perf_event__process_aux(struct perf_tool *tool __maybe_unused,
 226                             union perf_event *event,
 227                             struct perf_sample *sample __maybe_unused,
 228                             struct machine *machine)
 229 {
 230         return machine__process_aux_event(machine, event);
 231 }
 232
 233 int perf_event__process_itrace_start(struct perf_tool *tool __maybe_unused,
 234                                      union perf_event *event,
 235                                      struct perf_sample *sample __maybe_unused,
 236                                      struct machine *machine)
 237 {
 238         return machine__process_itrace_start_event(machine, event);
 239 }
 240
 241 int perf_event__process_aux_output_hw_id(struct perf_tool *tool __maybe_unused,
 242                                          union perf_event *event,
 243                                          struct perf_sample *sample __maybe_unused,
 244                                          struct machine *machine)
 245 {
 246         return machine__process_aux_output_hw_id_event(machine, event);
 247 }
 248
 249 int perf_event__process_lost_samples(struct perf_tool *tool __maybe_unused,
 250                                      union perf_event *event,
 251                                      struct perf_sample *sample,
 252                                      struct machine *machine)
 253 {
 254         return machine__process_lost_samples_event(machine, event, sample);
 255 }
 256
 257 int perf_event__process_switch(struct perf_tool *tool __maybe_unused,
 258                                union perf_event *event,
 259                                struct perf_sample *sample __maybe_unused,
 260                                struct machine *machine)
 261 {
 262         return machine__process_switch_event(machine, event);
 263 }
 264
 265 int perf_event__process_ksymbol(struct perf_tool *tool __maybe_unused,
 266                                 union perf_event *event,
 267                                 struct perf_sample *sample __maybe_unused,
 268                                 struct machine *machine)
 269 {
 270         return machine__process_ksymbol(machine, event, sample);
 271 }
 272
 273 int perf_event__process_bpf(struct perf_tool *tool __maybe_unused,
 274                             union perf_event *event,
 275                             struct perf_sample *sample,
 276                             struct machine *machine)
 277 {
 278         return machine__process_bpf(machine, event, sample);
 279 }
 280
 281 int perf_event__process_text_poke(struct perf_tool *tool __maybe_unused,
 282                                   union perf_event *event,
 283                                   struct perf_sample *sample,
 284                                   struct machine *machine)
 285 {
 286         return machine__process_text_poke(machine, event, sample);
 287 }
 288
 289 size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
 290 {
 291         return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 "]: %c %s\n",
 292                        event->mmap.pid, event->mmap.tid, event->mmap.start,
 293                        event->mmap.len, event->mmap.pgoff,
 294                        (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
 295                        event->mmap.filename);
 296 }
 297
 298 size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
 299 {
 300         if (event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) {
 301                 char sbuild_id[SBUILD_ID_SIZE];
 302                 struct build_id bid;
 303
 304                 build_id__init(&bid, event->mmap2.build_id,
 305                                event->mmap2.build_id_size);
 306                 build_id__sprintf(&bid, sbuild_id);
 307
 308                 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64
 309                                    " <%s>]: %c%c%c%c %s\n",
 310                                event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
 311                                event->mmap2.len, event->mmap2.pgoff, sbuild_id,
 312                                (event->mmap2.prot & PROT_READ) ? 'r' : '-',
 313                                (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
 314                                (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
 315                                (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
 316                                event->mmap2.filename);
 317         } else {
 318                 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64
 319                                    " %02x:%02x %"PRI_lu64" %"PRI_lu64"]: %c%c%c%c %s\n",
 320                                event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
 321                                event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj,
 322                                event->mmap2.min, event->mmap2.ino,
 323                                event->mmap2.ino_generation,
 324                                (event->mmap2.prot & PROT_READ) ? 'r' : '-',
 325                                (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
 326                                (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
 327                                (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
 328                                event->mmap2.filename);
 329         }
 330 }
 331
 332 size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp)
 333 {
 334         struct perf_thread_map *threads = thread_map__new_event(&event->thread_map);
 335         size_t ret;
 336
 337         ret = fprintf(fp, " nr: ");
 338
 339         if (threads)
 340                 ret += thread_map__fprintf(threads, fp);
 341         else
 342                 ret += fprintf(fp, "failed to get threads from event\n");
 343
 344         perf_thread_map__put(threads);
 345         return ret;
 346 }
 347
 348 size_t perf_event__fprintf_cpu_map(union perf_event *event, FILE *fp)
 349 {
 350         struct perf_cpu_map *cpus = cpu_map__new_data(&event->cpu_map.data);
 351         size_t ret;
 352
 353         ret = fprintf(fp, ": ");
 354
 355         if (cpus)
 356                 ret += cpu_map__fprintf(cpus, fp);
 357         else
 358                 ret += fprintf(fp, "failed to get cpumap from event\n");
 359
 360         perf_cpu_map__put(cpus);
 361         return ret;
 362 }
 363
 364 int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
 365                              union perf_event *event,
 366                              struct perf_sample *sample,
 367                              struct machine *machine)
 368 {
 369         return machine__process_mmap_event(machine, event, sample);
 370 }
 371
 372 int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused,
 373                              union perf_event *event,
 374                              struct perf_sample *sample,
 375                              struct machine *machine)
 376 {
 377         return machine__process_mmap2_event(machine, event, sample);
 378 }
 379
 380 size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
 381 {
 382         return fprintf(fp, "(%d:%d):(%d:%d)\n",
 383                        event->fork.pid, event->fork.tid,
 384                        event->fork.ppid, event->fork.ptid);
 385 }
 386
 387 int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
 388                              union perf_event *event,
 389                              struct perf_sample *sample,
 390                              struct machine *machine)
 391 {
 392         return machine__process_fork_event(machine, event, sample);
 393 }
 394
 395 int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
 396                              union perf_event *event,
 397                              struct perf_sample *sample,
 398                              struct machine *machine)
 399 {
 400         return machine__process_exit_event(machine, event, sample);
 401 }
 402
 403 size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp)
 404 {
 405         return fprintf(fp, " offset: %#"PRI_lx64" size: %#"PRI_lx64" flags: %#"PRI_lx64" [%s%s%s]\n",
 406                        event->aux.aux_offset, event->aux.aux_size,
 407                        event->aux.flags,
 408                        event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "",
 409                        event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "",
 410                        event->aux.flags & PERF_AUX_FLAG_PARTIAL   ? "P" : "");
 411 }
 412
 413 size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp)
 414 {
 415         return fprintf(fp, " pid: %u tid: %u\n",
 416                        event->itrace_start.pid, event->itrace_start.tid);
 417 }
 418
 419 size_t perf_event__fprintf_aux_output_hw_id(union perf_event *event, FILE *fp)
 420 {
 421         return fprintf(fp, " hw_id: %#"PRI_lx64"\n",
 422                        event->aux_output_hw_id.hw_id);
 423 }
 424
 425 size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp)
 426 {
 427         bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
 428         const char *in_out = !out ? "IN         " :
 429                 !(event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT) ?
 430                                     "OUT        " : "OUT preempt";
 431
 432         if (event->header.type == PERF_RECORD_SWITCH)
 433                 return fprintf(fp, " %s\n", in_out);
 434
 435         return fprintf(fp, " %s  %s pid/tid: %5d/%-5d\n",
 436                        in_out, out ? "next" : "prev",
 437                        event->context_switch.next_prev_pid,
 438                        event->context_switch.next_prev_tid);
 439 }
 440
 441 static size_t perf_event__fprintf_lost(union perf_event *event, FILE *fp)
 442 {
 443         return fprintf(fp, " lost %" PRI_lu64 "\n", event->lost.lost);
 444 }
 445
 446 size_t perf_event__fprintf_ksymbol(union perf_event *event, FILE *fp)
 447 {
 448         return fprintf(fp, " addr %" PRI_lx64 " len %u type %u flags 0x%x name %s\n",
 449                        event->ksymbol.addr, event->ksymbol.len,
 450                        event->ksymbol.ksym_type,
 451                        event->ksymbol.flags, event->ksymbol.name);
 452 }
 453
 454 size_t perf_event__fprintf_bpf(union perf_event *event, FILE *fp)
 455 {
 456         return fprintf(fp, " type %u, flags %u, id %u\n",
 457                        event->bpf.type, event->bpf.flags, event->bpf.id);
 458 }
 459
 460 static int text_poke_printer(enum binary_printer_ops op, unsigned int val,
 461                              void *extra, FILE *fp)
 462 {
 463         bool old = *(bool *)extra;
 464
 465         switch ((int)op) {
 466         case BINARY_PRINT_LINE_BEGIN:
 467                 return fprintf(fp, "            %s bytes:", old ? "Old" : "New");
 468         case BINARY_PRINT_NUM_DATA:
 469                 return fprintf(fp, " %02x", val);
 470         case BINARY_PRINT_LINE_END:
 471                 return fprintf(fp, "\n");
 472         default:
 473                 return 0;
 474         }
 475 }
 476
 477 size_t perf_event__fprintf_text_poke(union perf_event *event, struct machine *machine, FILE *fp)
 478 {
 479         struct perf_record_text_poke_event *tp = &event->text_poke;
 480         size_t ret;
 481         bool old;
 482
 483         ret = fprintf(fp, " %" PRI_lx64 " ", tp->addr);
 484         if (machine) {
 485                 struct addr_location al;
 486
 487                 al.map = maps__find(machine__kernel_maps(machine), tp->addr);
 488                 if (al.map && map__load(al.map) >= 0) {
 489                         al.addr = al.map->map_ip(al.map, tp->addr);
 490                         al.sym = map__find_symbol(al.map, al.addr);
 491                         if (al.sym)
 492                                 ret += symbol__fprintf_symname_offs(al.sym, &al, fp);
 493                 }
 494         }
 495         ret += fprintf(fp, " old len %u new len %u\n", tp->old_len, tp->new_len);
 496         old = true;
 497         ret += binary__fprintf(tp->bytes, tp->old_len, 16, text_poke_printer,
 498                                &old, fp);
 499         old = false;
 500         ret += binary__fprintf(tp->bytes + tp->old_len, tp->new_len, 16,
 501                                text_poke_printer, &old, fp);
 502         return ret;
 503 }
 504
 505 size_t perf_event__fprintf(union perf_event *event, struct machine *machine, FILE *fp)
 506 {
 507         size_t ret = fprintf(fp, "PERF_RECORD_%s",
 508                              perf_event__name(event->header.type));
 509
 510         switch (event->header.type) {
 511         case PERF_RECORD_COMM:
 512                 ret += perf_event__fprintf_comm(event, fp);
 513                 break;
 514         case PERF_RECORD_FORK:
 515         case PERF_RECORD_EXIT:
 516                 ret += perf_event__fprintf_task(event, fp);
 517                 break;
 518         case PERF_RECORD_MMAP:
 519                 ret += perf_event__fprintf_mmap(event, fp);
 520                 break;
 521         case PERF_RECORD_NAMESPACES:
 522                 ret += perf_event__fprintf_namespaces(event, fp);
 523                 break;
 524         case PERF_RECORD_CGROUP:
 525                 ret += perf_event__fprintf_cgroup(event, fp);
 526                 break;
 527         case PERF_RECORD_MMAP2:
 528                 ret += perf_event__fprintf_mmap2(event, fp);
 529                 break;
 530         case PERF_RECORD_AUX:
 531                 ret += perf_event__fprintf_aux(event, fp);
 532                 break;
 533         case PERF_RECORD_ITRACE_START:
 534                 ret += perf_event__fprintf_itrace_start(event, fp);
 535                 break;
 536         case PERF_RECORD_SWITCH:
 537         case PERF_RECORD_SWITCH_CPU_WIDE:
 538                 ret += perf_event__fprintf_switch(event, fp);
 539                 break;
 540         case PERF_RECORD_LOST:
 541                 ret += perf_event__fprintf_lost(event, fp);
 542                 break;
 543         case PERF_RECORD_KSYMBOL:
 544                 ret += perf_event__fprintf_ksymbol(event, fp);
 545                 break;
 546         case PERF_RECORD_BPF_EVENT:
 547                 ret += perf_event__fprintf_bpf(event, fp);
 548                 break;
 549         case PERF_RECORD_TEXT_POKE:
 550                 ret += perf_event__fprintf_text_poke(event, machine, fp);
 551                 break;
 552         case PERF_RECORD_AUX_OUTPUT_HW_ID:
 553                 ret += perf_event__fprintf_aux_output_hw_id(event, fp);
 554                 break;
 555         default:
 556                 ret += fprintf(fp, "\n");
 557         }
 558
 559         return ret;
 560 }
 561
 562 int perf_event__process(struct perf_tool *tool __maybe_unused,
 563                         union perf_event *event,
 564                         struct perf_sample *sample,
 565                         struct machine *machine)
 566 {
 567         return machine__process_event(machine, event, sample);
 568 }
 569
 570 struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr,
 571                              struct addr_location *al)
 572 {
 573         struct maps *maps = thread->maps;
 574         struct machine *machine = maps->machine;
 575         bool load_map = false;
 576
 577         al->maps = maps;
 578         al->thread = thread;
 579         al->addr = addr;
 580         al->cpumode = cpumode;
 581         al->filtered = 0;
 582
 583         if (machine == NULL) {
 584                 al->map = NULL;
 585                 return NULL;
 586         }
 587
 588         if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
 589                 al->level = 'k';
 590                 al->maps = maps = machine__kernel_maps(machine);
 591                 load_map = true;
 592         } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
 593                 al->level = '.';
 594         } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
 595                 al->level = 'g';
 596                 al->maps = maps = machine__kernel_maps(machine);
 597                 load_map = true;
 598         } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) {
 599                 al->level = 'u';
 600         } else {
 601                 al->level = 'H';
 602                 al->map = NULL;
 603
 604                 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
 605                         cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
 606                         !perf_guest)
 607                         al->filtered |= (1 << HIST_FILTER__GUEST);
 608                 if ((cpumode == PERF_RECORD_MISC_USER ||
 609                         cpumode == PERF_RECORD_MISC_KERNEL) &&
 610                         !perf_host)
 611                         al->filtered |= (1 << HIST_FILTER__HOST);
 612
 613                 return NULL;
 614         }
 615
 616         al->map = maps__find(maps, al->addr);
 617         if (al->map != NULL) {
 618                 /*
 619                  * Kernel maps might be changed when loading symbols so loading
 620                  * must be done prior to using kernel maps.
 621                  */
 622                 if (load_map)
 623                         map__load(al->map);
 624                 al->addr = al->map->map_ip(al->map, al->addr);
 625         }
 626
 627         return al->map;
 628 }
 629
 630 /*
 631  * For branch stacks or branch samples, the sample cpumode might not be correct
 632  * because it applies only to the sample 'ip' and not necessary to 'addr' or
 633  * branch stack addresses. If possible, use a fallback to deal with those cases.
 634  */
 635 struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr,
 636                                 struct addr_location *al)
 637 {
 638         struct map *map = thread__find_map(thread, cpumode, addr, al);
 639         struct machine *machine = thread->maps->machine;
 640         u8 addr_cpumode = machine__addr_cpumode(machine, cpumode, addr);
 641
 642         if (map || addr_cpumode == cpumode)
 643                 return map;
 644
 645         return thread__find_map(thread, addr_cpumode, addr, al);
 646 }
 647
 648 struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode,
 649                                    u64 addr, struct addr_location *al)
 650 {
 651         al->sym = NULL;
 652         if (thread__find_map(thread, cpumode, addr, al))
 653                 al->sym = map__find_symbol(al->map, al->addr);
 654         return al->sym;
 655 }
 656
 657 struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode,
 658                                       u64 addr, struct addr_location *al)
 659 {
 660         al->sym = NULL;
 661         if (thread__find_map_fb(thread, cpumode, addr, al))
 662                 al->sym = map__find_symbol(al->map, al->addr);
 663         return al->sym;
 664 }
 665
 666 static bool check_address_range(struct intlist *addr_list, int addr_range,
 667                                 unsigned long addr)
 668 {
 669         struct int_node *pos;
 670
 671         intlist__for_each_entry(pos, addr_list) {
 672                 if (addr >= pos->i && addr < pos->i + addr_range)
 673                         return true;
 674         }
 675
 676         return false;
 677 }
 678
 679 /*
 680  * Callers need to drop the reference to al->thread, obtained in
 681  * machine__findnew_thread()
 682  */
 683 int machine__resolve(struct machine *machine, struct addr_location *al,
 684                      struct perf_sample *sample)
 685 {
 686         struct thread *thread = machine__findnew_thread(machine, sample->pid,
 687                                                         sample->tid);
 688
 689         if (thread == NULL)
 690                 return -1;
 691
 692         dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
 693         thread__find_map(thread, sample->cpumode, sample->ip, al);
 694         dump_printf(" ...... dso: %s\n",
 695                     al->map ? al->map->dso->long_name :
 696                         al->level == 'H' ? "[hypervisor]" : "<not found>");
 697
 698         if (thread__is_filtered(thread))
 699                 al->filtered |= (1 << HIST_FILTER__THREAD);
 700
 701         al->sym = NULL;
 702         al->cpu = sample->cpu;
 703         al->socket = -1;
 704         al->srcline = NULL;
 705
 706         if (al->cpu >= 0) {
 707                 struct perf_env *env = machine->env;
 708
 709                 if (env && env->cpu)
 710                         al->socket = env->cpu[al->cpu].socket_id;
 711         }
 712
 713         if (al->map) {
 714                 struct dso *dso = al->map->dso;
 715
 716                 if (symbol_conf.dso_list &&
 717                     (!dso || !(strlist__has_entry(symbol_conf.dso_list,
 718                                                   dso->short_name) ||
 719                                (dso->short_name != dso->long_name &&
 720                                 strlist__has_entry(symbol_conf.dso_list,
 721                                                    dso->long_name))))) {
 722                         al->filtered |= (1 << HIST_FILTER__DSO);
 723                 }
 724
 725                 al->sym = map__find_symbol(al->map, al->addr);
 726         } else if (symbol_conf.dso_list) {
 727                 al->filtered |= (1 << HIST_FILTER__DSO);
 728         }
 729
 730         if (symbol_conf.sym_list) {
 731                 int ret = 0;
 732                 char al_addr_str[32];
 733                 size_t sz = sizeof(al_addr_str);
 734
 735                 if (al->sym) {
 736                         ret = strlist__has_entry(symbol_conf.sym_list,
 737                                                 al->sym->name);
 738                 }
 739                 if (!ret && al->sym) {
 740                         snprintf(al_addr_str, sz, "0x%"PRIx64,
 741                                 al->map->unmap_ip(al->map, al->sym->start));
 742                         ret = strlist__has_entry(symbol_conf.sym_list,
 743                                                 al_addr_str);
 744                 }
 745                 if (!ret && symbol_conf.addr_list && al->map) {
 746                         unsigned long addr = al->map->unmap_ip(al->map, al->addr);
 747
 748                         ret = intlist__has_entry(symbol_conf.addr_list, addr);
 749                         if (!ret && symbol_conf.addr_range) {
 750                                 ret = check_address_range(symbol_conf.addr_list,
 751                                                           symbol_conf.addr_range,
 752                                                           addr);
 753                         }
 754                 }
 755
 756                 if (!ret)
 757                         al->filtered |= (1 << HIST_FILTER__SYMBOL);
 758         }
 759
 760         return 0;
 761 }
 762
 763 /*
 764  * The preprocess_sample method will return with reference counts for the
 765  * in it, when done using (and perhaps getting ref counts if needing to
 766  * keep a pointer to one of those entries) it must be paired with
 767  * addr_location__put(), so that the refcounts can be decremented.
 768  */
 769 void addr_location__put(struct addr_location *al)
 770 {
 771         thread__zput(al->thread);
 772 }
 773
 774 bool is_bts_event(struct perf_event_attr *attr)
 775 {
 776         return attr->type == PERF_TYPE_HARDWARE &&
 777                (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
 778                attr->sample_period == 1;
 779 }
 780
 781 bool sample_addr_correlates_sym(struct perf_event_attr *attr)
 782 {
 783         if (attr->type == PERF_TYPE_SOFTWARE &&
 784             (attr->config == PERF_COUNT_SW_PAGE_FAULTS ||
 785              attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
 786              attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ))
 787                 return true;
 788
 789         if (is_bts_event(attr))
 790                 return true;
 791
 792         return false;
 793 }
 794
 795 void thread__resolve(struct thread *thread, struct addr_location *al,
 796                      struct perf_sample *sample)
 797 {
 798         thread__find_map_fb(thread, sample->cpumode, sample->addr, al);
 799
 800         al->cpu = sample->cpu;
 801         al->sym = NULL;
 802
 803         if (al->map)
 804                 al->sym = map__find_symbol(al->map, al->addr);
 805 }