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