tools/perf/util/annotate.c

   1 /*
   2  * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
   3  *
   4  * Parts came from builtin-annotate.c, see those files for further
   5  * copyright notes.
   6  *
   7  * Released under the GPL v2. (and only v2, not any later version)
   8  */
   9
  10 #include "util.h"
  11 #include "ui/ui.h"
  12 #include "sort.h"
  13 #include "build-id.h"
  14 #include "color.h"
  15 #include "cache.h"
  16 #include "symbol.h"
  17 #include "debug.h"
  18 #include "annotate.h"
  19 #include "evsel.h"
  20 #include <pthread.h>
  21 #include <linux/bitops.h>
  22
  23 const char      *disassembler_style;
  24 const char      *objdump_path;
  25
  26 static struct ins *ins__find(const char *name);
  27 static int disasm_line__parse(char *line, char **namep, char **rawp);
  28
  29 static void ins__delete(struct ins_operands *ops)
  30 {
  31         zfree(&ops->source.raw);
  32         zfree(&ops->source.name);
  33         zfree(&ops->target.raw);
  34         zfree(&ops->target.name);
  35 }
  36
  37 static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
  38                               struct ins_operands *ops)
  39 {
  40         return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw);
  41 }
  42
  43 int ins__scnprintf(struct ins *ins, char *bf, size_t size,
  44                   struct ins_operands *ops)
  45 {
  46         if (ins->ops->scnprintf)
  47                 return ins->ops->scnprintf(ins, bf, size, ops);
  48
  49         return ins__raw_scnprintf(ins, bf, size, ops);
  50 }
  51
  52 static int call__parse(struct ins_operands *ops)
  53 {
  54         char *endptr, *tok, *name;
  55
  56         ops->target.addr = strtoull(ops->raw, &endptr, 16);
  57
  58         name = strchr(endptr, '<');
  59         if (name == NULL)
  60                 goto indirect_call;
  61
  62         name++;
  63
  64         tok = strchr(name, '>');
  65         if (tok == NULL)
  66                 return -1;
  67
  68         *tok = '\0';
  69         ops->target.name = strdup(name);
  70         *tok = '>';
  71
  72         return ops->target.name == NULL ? -1 : 0;
  73
  74 indirect_call:
  75         tok = strchr(endptr, '(');
  76         if (tok != NULL) {
  77                 ops->target.addr = 0;
  78                 return 0;
  79         }
  80
  81         tok = strchr(endptr, '*');
  82         if (tok == NULL)
  83                 return -1;
  84
  85         ops->target.addr = strtoull(tok + 1, NULL, 16);
  86         return 0;
  87 }
  88
  89 static int call__scnprintf(struct ins *ins, char *bf, size_t size,
  90                            struct ins_operands *ops)
  91 {
  92         if (ops->target.name)
  93                 return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);
  94
  95         if (ops->target.addr == 0)
  96                 return ins__raw_scnprintf(ins, bf, size, ops);
  97
  98         return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
  99 }
 100
 101 static struct ins_ops call_ops = {
 102         .parse     = call__parse,
 103         .scnprintf = call__scnprintf,
 104 };
 105
 106 bool ins__is_call(const struct ins *ins)
 107 {
 108         return ins->ops == &call_ops;
 109 }
 110
 111 static int jump__parse(struct ins_operands *ops)
 112 {
 113         const char *s = strchr(ops->raw, '+');
 114
 115         ops->target.addr = strtoull(ops->raw, NULL, 16);
 116
 117         if (s++ != NULL)
 118                 ops->target.offset = strtoull(s, NULL, 16);
 119         else
 120                 ops->target.offset = UINT64_MAX;
 121
 122         return 0;
 123 }
 124
 125 static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
 126                            struct ins_operands *ops)
 127 {
 128         return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset);
 129 }
 130
 131 static struct ins_ops jump_ops = {
 132         .parse     = jump__parse,
 133         .scnprintf = jump__scnprintf,
 134 };
 135
 136 bool ins__is_jump(const struct ins *ins)
 137 {
 138         return ins->ops == &jump_ops;
 139 }
 140
 141 static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
 142 {
 143         char *endptr, *name, *t;
 144
 145         if (strstr(raw, "(%rip)") == NULL)
 146                 return 0;
 147
 148         *addrp = strtoull(comment, &endptr, 16);
 149         name = strchr(endptr, '<');
 150         if (name == NULL)
 151                 return -1;
 152
 153         name++;
 154
 155         t = strchr(name, '>');
 156         if (t == NULL)
 157                 return 0;
 158
 159         *t = '\0';
 160         *namep = strdup(name);
 161         *t = '>';
 162
 163         return 0;
 164 }
 165
 166 static int lock__parse(struct ins_operands *ops)
 167 {
 168         char *name;
 169
 170         ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
 171         if (ops->locked.ops == NULL)
 172                 return 0;
 173
 174         if (disasm_line__parse(ops->raw, &name, &ops->locked.ops->raw) < 0)
 175                 goto out_free_ops;
 176
 177         ops->locked.ins = ins__find(name);
 178         if (ops->locked.ins == NULL)
 179                 goto out_free_ops;
 180
 181         if (!ops->locked.ins->ops)
 182                 return 0;
 183
 184         if (ops->locked.ins->ops->parse)
 185                 ops->locked.ins->ops->parse(ops->locked.ops);
 186
 187         return 0;
 188
 189 out_free_ops:
 190         zfree(&ops->locked.ops);
 191         return 0;
 192 }
 193
 194 static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
 195                            struct ins_operands *ops)
 196 {
 197         int printed;
 198
 199         if (ops->locked.ins == NULL)
 200                 return ins__raw_scnprintf(ins, bf, size, ops);
 201
 202         printed = scnprintf(bf, size, "%-6.6s ", ins->name);
 203         return printed + ins__scnprintf(ops->locked.ins, bf + printed,
 204                                         size - printed, ops->locked.ops);
 205 }
 206
 207 static void lock__delete(struct ins_operands *ops)
 208 {
 209         zfree(&ops->locked.ops);
 210         zfree(&ops->target.raw);
 211         zfree(&ops->target.name);
 212 }
 213
 214 static struct ins_ops lock_ops = {
 215         .free      = lock__delete,
 216         .parse     = lock__parse,
 217         .scnprintf = lock__scnprintf,
 218 };
 219
 220 static int mov__parse(struct ins_operands *ops)
 221 {
 222         char *s = strchr(ops->raw, ','), *target, *comment, prev;
 223
 224         if (s == NULL)
 225                 return -1;
 226
 227         *s = '\0';
 228         ops->source.raw = strdup(ops->raw);
 229         *s = ',';
 230
 231         if (ops->source.raw == NULL)
 232                 return -1;
 233
 234         target = ++s;
 235
 236         while (s[0] != '\0' && !isspace(s[0]))
 237                 ++s;
 238         prev = *s;
 239         *s = '\0';
 240
 241         ops->target.raw = strdup(target);
 242         *s = prev;
 243
 244         if (ops->target.raw == NULL)
 245                 goto out_free_source;
 246
 247         comment = strchr(s, '#');
 248         if (comment == NULL)
 249                 return 0;
 250
 251         while (comment[0] != '\0' && isspace(comment[0]))
 252                 ++comment;
 253
 254         comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name);
 255         comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
 256
 257         return 0;
 258
 259 out_free_source:
 260         zfree(&ops->source.raw);
 261         return -1;
 262 }
 263
 264 static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
 265                            struct ins_operands *ops)
 266 {
 267         return scnprintf(bf, size, "%-6.6s %s,%s", ins->name,
 268                          ops->source.name ?: ops->source.raw,
 269                          ops->target.name ?: ops->target.raw);
 270 }
 271
 272 static struct ins_ops mov_ops = {
 273         .parse     = mov__parse,
 274         .scnprintf = mov__scnprintf,
 275 };
 276
 277 static int dec__parse(struct ins_operands *ops)
 278 {
 279         char *target, *comment, *s, prev;
 280
 281         target = s = ops->raw;
 282
 283         while (s[0] != '\0' && !isspace(s[0]))
 284                 ++s;
 285         prev = *s;
 286         *s = '\0';
 287
 288         ops->target.raw = strdup(target);
 289         *s = prev;
 290
 291         if (ops->target.raw == NULL)
 292                 return -1;
 293
 294         comment = strchr(s, '#');
 295         if (comment == NULL)
 296                 return 0;
 297
 298         while (comment[0] != '\0' && isspace(comment[0]))
 299                 ++comment;
 300
 301         comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
 302
 303         return 0;
 304 }
 305
 306 static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
 307                            struct ins_operands *ops)
 308 {
 309         return scnprintf(bf, size, "%-6.6s %s", ins->name,
 310                          ops->target.name ?: ops->target.raw);
 311 }
 312
 313 static struct ins_ops dec_ops = {
 314         .parse     = dec__parse,
 315         .scnprintf = dec__scnprintf,
 316 };
 317
 318 static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
 319                           struct ins_operands *ops __maybe_unused)
 320 {
 321         return scnprintf(bf, size, "%-6.6s", "nop");
 322 }
 323
 324 static struct ins_ops nop_ops = {
 325         .scnprintf = nop__scnprintf,
 326 };
 327
 328 /*
 329  * Must be sorted by name!
 330  */
 331 static struct ins instructions[] = {
 332         { .name = "add",   .ops  = &mov_ops, },
 333         { .name = "addl",  .ops  = &mov_ops, },
 334         { .name = "addq",  .ops  = &mov_ops, },
 335         { .name = "addw",  .ops  = &mov_ops, },
 336         { .name = "and",   .ops  = &mov_ops, },
 337         { .name = "bts",   .ops  = &mov_ops, },
 338         { .name = "call",  .ops  = &call_ops, },
 339         { .name = "callq", .ops  = &call_ops, },
 340         { .name = "cmp",   .ops  = &mov_ops, },
 341         { .name = "cmpb",  .ops  = &mov_ops, },
 342         { .name = "cmpl",  .ops  = &mov_ops, },
 343         { .name = "cmpq",  .ops  = &mov_ops, },
 344         { .name = "cmpw",  .ops  = &mov_ops, },
 345         { .name = "cmpxch", .ops  = &mov_ops, },
 346         { .name = "dec",   .ops  = &dec_ops, },
 347         { .name = "decl",  .ops  = &dec_ops, },
 348         { .name = "imul",  .ops  = &mov_ops, },
 349         { .name = "inc",   .ops  = &dec_ops, },
 350         { .name = "incl",  .ops  = &dec_ops, },
 351         { .name = "ja",    .ops  = &jump_ops, },
 352         { .name = "jae",   .ops  = &jump_ops, },
 353         { .name = "jb",    .ops  = &jump_ops, },
 354         { .name = "jbe",   .ops  = &jump_ops, },
 355         { .name = "jc",    .ops  = &jump_ops, },
 356         { .name = "jcxz",  .ops  = &jump_ops, },
 357         { .name = "je",    .ops  = &jump_ops, },
 358         { .name = "jecxz", .ops  = &jump_ops, },
 359         { .name = "jg",    .ops  = &jump_ops, },
 360         { .name = "jge",   .ops  = &jump_ops, },
 361         { .name = "jl",    .ops  = &jump_ops, },
 362         { .name = "jle",   .ops  = &jump_ops, },
 363         { .name = "jmp",   .ops  = &jump_ops, },
 364         { .name = "jmpq",  .ops  = &jump_ops, },
 365         { .name = "jna",   .ops  = &jump_ops, },
 366         { .name = "jnae",  .ops  = &jump_ops, },
 367         { .name = "jnb",   .ops  = &jump_ops, },
 368         { .name = "jnbe",  .ops  = &jump_ops, },
 369         { .name = "jnc",   .ops  = &jump_ops, },
 370         { .name = "jne",   .ops  = &jump_ops, },
 371         { .name = "jng",   .ops  = &jump_ops, },
 372         { .name = "jnge",  .ops  = &jump_ops, },
 373         { .name = "jnl",   .ops  = &jump_ops, },
 374         { .name = "jnle",  .ops  = &jump_ops, },
 375         { .name = "jno",   .ops  = &jump_ops, },
 376         { .name = "jnp",   .ops  = &jump_ops, },
 377         { .name = "jns",   .ops  = &jump_ops, },
 378         { .name = "jnz",   .ops  = &jump_ops, },
 379         { .name = "jo",    .ops  = &jump_ops, },
 380         { .name = "jp",    .ops  = &jump_ops, },
 381         { .name = "jpe",   .ops  = &jump_ops, },
 382         { .name = "jpo",   .ops  = &jump_ops, },
 383         { .name = "jrcxz", .ops  = &jump_ops, },
 384         { .name = "js",    .ops  = &jump_ops, },
 385         { .name = "jz",    .ops  = &jump_ops, },
 386         { .name = "lea",   .ops  = &mov_ops, },
 387         { .name = "lock",  .ops  = &lock_ops, },
 388         { .name = "mov",   .ops  = &mov_ops, },
 389         { .name = "movb",  .ops  = &mov_ops, },
 390         { .name = "movdqa",.ops  = &mov_ops, },
 391         { .name = "movl",  .ops  = &mov_ops, },
 392         { .name = "movq",  .ops  = &mov_ops, },
 393         { .name = "movslq", .ops  = &mov_ops, },
 394         { .name = "movzbl", .ops  = &mov_ops, },
 395         { .name = "movzwl", .ops  = &mov_ops, },
 396         { .name = "nop",   .ops  = &nop_ops, },
 397         { .name = "nopl",  .ops  = &nop_ops, },
 398         { .name = "nopw",  .ops  = &nop_ops, },
 399         { .name = "or",    .ops  = &mov_ops, },
 400         { .name = "orl",   .ops  = &mov_ops, },
 401         { .name = "test",  .ops  = &mov_ops, },
 402         { .name = "testb", .ops  = &mov_ops, },
 403         { .name = "testl", .ops  = &mov_ops, },
 404         { .name = "xadd",  .ops  = &mov_ops, },
 405         { .name = "xbeginl", .ops  = &jump_ops, },
 406         { .name = "xbeginq", .ops  = &jump_ops, },
 407 };
 408
 409 static int ins__cmp(const void *name, const void *insp)
 410 {
 411         const struct ins *ins = insp;
 412
 413         return strcmp(name, ins->name);
 414 }
 415
 416 static struct ins *ins__find(const char *name)
 417 {
 418         const int nmemb = ARRAY_SIZE(instructions);
 419
 420         return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__cmp);
 421 }
 422
 423 int symbol__annotate_init(struct map *map __maybe_unused, struct symbol *sym)
 424 {
 425         struct annotation *notes = symbol__annotation(sym);
 426         pthread_mutex_init(&notes->lock, NULL);
 427         return 0;
 428 }
 429
 430 int symbol__alloc_hist(struct symbol *sym)
 431 {
 432         struct annotation *notes = symbol__annotation(sym);
 433         const size_t size = symbol__size(sym);
 434         size_t sizeof_sym_hist;
 435
 436         /* Check for overflow when calculating sizeof_sym_hist */
 437         if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64))
 438                 return -1;
 439
 440         sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64));
 441
 442         /* Check for overflow in zalloc argument */
 443         if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src))
 444                                 / symbol_conf.nr_events)
 445                 return -1;
 446
 447         notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist);
 448         if (notes->src == NULL)
 449                 return -1;
 450         notes->src->sizeof_sym_hist = sizeof_sym_hist;
 451         notes->src->nr_histograms   = symbol_conf.nr_events;
 452         INIT_LIST_HEAD(&notes->src->source);
 453         return 0;
 454 }
 455
 456 void symbol__annotate_zero_histograms(struct symbol *sym)
 457 {
 458         struct annotation *notes = symbol__annotation(sym);
 459
 460         pthread_mutex_lock(&notes->lock);
 461         if (notes->src != NULL)
 462                 memset(notes->src->histograms, 0,
 463                        notes->src->nr_histograms * notes->src->sizeof_sym_hist);
 464         pthread_mutex_unlock(&notes->lock);
 465 }
 466
 467 static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 468                                       struct annotation *notes, int evidx, u64 addr)
 469 {
 470         unsigned offset;
 471         struct sym_hist *h;
 472
 473         pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
 474
 475         if (addr < sym->start || addr > sym->end)
 476                 return -ERANGE;
 477
 478         offset = addr - sym->start;
 479         h = annotation__histogram(notes, evidx);
 480         h->sum++;
 481         h->addr[offset]++;
 482
 483         pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
 484                   ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name,
 485                   addr, addr - sym->start, evidx, h->addr[offset]);
 486         return 0;
 487 }
 488
 489 static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 490                                     int evidx, u64 addr)
 491 {
 492         struct annotation *notes;
 493
 494         if (sym == NULL)
 495                 return 0;
 496
 497         notes = symbol__annotation(sym);
 498         if (notes->src == NULL) {
 499                 if (symbol__alloc_hist(sym) < 0)
 500                         return -ENOMEM;
 501         }
 502
 503         return __symbol__inc_addr_samples(sym, map, notes, evidx, addr);
 504 }
 505
 506 int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx)
 507 {
 508         return symbol__inc_addr_samples(ams->sym, ams->map, evidx, ams->al_addr);
 509 }
 510
 511 int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip)
 512 {
 513         return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip);
 514 }
 515
 516 static void disasm_line__init_ins(struct disasm_line *dl)
 517 {
 518         dl->ins = ins__find(dl->name);
 519
 520         if (dl->ins == NULL)
 521                 return;
 522
 523         if (!dl->ins->ops)
 524                 return;
 525
 526         if (dl->ins->ops->parse)
 527                 dl->ins->ops->parse(&dl->ops);
 528 }
 529
 530 static int disasm_line__parse(char *line, char **namep, char **rawp)
 531 {
 532         char *name = line, tmp;
 533
 534         while (isspace(name[0]))
 535                 ++name;
 536
 537         if (name[0] == '\0')
 538                 return -1;
 539
 540         *rawp = name + 1;
 541
 542         while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
 543                 ++*rawp;
 544
 545         tmp = (*rawp)[0];
 546         (*rawp)[0] = '\0';
 547         *namep = strdup(name);
 548
 549         if (*namep == NULL)
 550                 goto out_free_name;
 551
 552         (*rawp)[0] = tmp;
 553
 554         if ((*rawp)[0] != '\0') {
 555                 (*rawp)++;
 556                 while (isspace((*rawp)[0]))
 557                         ++(*rawp);
 558         }
 559
 560         return 0;
 561
 562 out_free_name:
 563         zfree(namep);
 564         return -1;
 565 }
 566
 567 static struct disasm_line *disasm_line__new(s64 offset, char *line, size_t privsize)
 568 {
 569         struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
 570
 571         if (dl != NULL) {
 572                 dl->offset = offset;
 573                 dl->line = strdup(line);
 574                 if (dl->line == NULL)
 575                         goto out_delete;
 576
 577                 if (offset != -1) {
 578                         if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0)
 579                                 goto out_free_line;
 580
 581                         disasm_line__init_ins(dl);
 582                 }
 583         }
 584
 585         return dl;
 586
 587 out_free_line:
 588         zfree(&dl->line);
 589 out_delete:
 590         free(dl);
 591         return NULL;
 592 }
 593
 594 void disasm_line__free(struct disasm_line *dl)
 595 {
 596         zfree(&dl->line);
 597         zfree(&dl->name);
 598         if (dl->ins && dl->ins->ops->free)
 599                 dl->ins->ops->free(&dl->ops);
 600         else
 601                 ins__delete(&dl->ops);
 602         free(dl);
 603 }
 604
 605 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
 606 {
 607         if (raw || !dl->ins)
 608                 return scnprintf(bf, size, "%-6.6s %s", dl->name, dl->ops.raw);
 609
 610         return ins__scnprintf(dl->ins, bf, size, &dl->ops);
 611 }
 612
 613 static void disasm__add(struct list_head *head, struct disasm_line *line)
 614 {
 615         list_add_tail(&line->node, head);
 616 }
 617
 618 struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos)
 619 {
 620         list_for_each_entry_continue(pos, head, node)
 621                 if (pos->offset >= 0)
 622                         return pos;
 623
 624         return NULL;
 625 }
 626
 627 double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
 628                             s64 end, const char **path)
 629 {
 630         struct source_line *src_line = notes->src->lines;
 631         double percent = 0.0;
 632
 633         if (src_line) {
 634                 size_t sizeof_src_line = sizeof(*src_line) +
 635                                 sizeof(src_line->p) * (src_line->nr_pcnt - 1);
 636
 637                 while (offset < end) {
 638                         src_line = (void *)notes->src->lines +
 639                                         (sizeof_src_line * offset);
 640
 641                         if (*path == NULL)
 642                                 *path = src_line->path;
 643
 644                         percent += src_line->p[evidx].percent;
 645                         offset++;
 646                 }
 647         } else {
 648                 struct sym_hist *h = annotation__histogram(notes, evidx);
 649                 unsigned int hits = 0;
 650
 651                 while (offset < end)
 652                         hits += h->addr[offset++];
 653
 654                 if (h->sum)
 655                         percent = 100.0 * hits / h->sum;
 656         }
 657
 658         return percent;
 659 }
 660
 661 static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start,
 662                       struct perf_evsel *evsel, u64 len, int min_pcnt, int printed,
 663                       int max_lines, struct disasm_line *queue)
 664 {
 665         static const char *prev_line;
 666         static const char *prev_color;
 667
 668         if (dl->offset != -1) {
 669                 const char *path = NULL;
 670                 double percent, max_percent = 0.0;
 671                 double *ppercents = &percent;
 672                 int i, nr_percent = 1;
 673                 const char *color;
 674                 struct annotation *notes = symbol__annotation(sym);
 675                 s64 offset = dl->offset;
 676                 const u64 addr = start + offset;
 677                 struct disasm_line *next;
 678
 679                 next = disasm__get_next_ip_line(&notes->src->source, dl);
 680
 681                 if (perf_evsel__is_group_event(evsel)) {
 682                         nr_percent = evsel->nr_members;
 683                         ppercents = calloc(nr_percent, sizeof(double));
 684                         if (ppercents == NULL)
 685                                 return -1;
 686                 }
 687
 688                 for (i = 0; i < nr_percent; i++) {
 689                         percent = disasm__calc_percent(notes,
 690                                         notes->src->lines ? i : evsel->idx + i,
 691                                         offset,
 692                                         next ? next->offset : (s64) len,
 693                                         &path);
 694
 695                         ppercents[i] = percent;
 696                         if (percent > max_percent)
 697                                 max_percent = percent;
 698                 }
 699
 700                 if (max_percent < min_pcnt)
 701                         return -1;
 702
 703                 if (max_lines && printed >= max_lines)
 704                         return 1;
 705
 706                 if (queue != NULL) {
 707                         list_for_each_entry_from(queue, &notes->src->source, node) {
 708                                 if (queue == dl)
 709                                         break;
 710                                 disasm_line__print(queue, sym, start, evsel, len,
 711                                                     0, 0, 1, NULL);
 712                         }
 713                 }
 714
 715                 color = get_percent_color(max_percent);
 716
 717                 /*
 718                  * Also color the filename and line if needed, with
 719                  * the same color than the percentage. Don't print it
 720                  * twice for close colored addr with the same filename:line
 721                  */
 722                 if (path) {
 723                         if (!prev_line || strcmp(prev_line, path)
 724                                        || color != prev_color) {
 725                                 color_fprintf(stdout, color, " %s", path);
 726                                 prev_line = path;
 727                                 prev_color = color;
 728                         }
 729                 }
 730
 731                 for (i = 0; i < nr_percent; i++) {
 732                         percent = ppercents[i];
 733                         color = get_percent_color(percent);
 734                         color_fprintf(stdout, color, " %7.2f", percent);
 735                 }
 736
 737                 printf(" :      ");
 738                 color_fprintf(stdout, PERF_COLOR_MAGENTA, "  %" PRIx64 ":", addr);
 739                 color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", dl->line);
 740
 741                 if (ppercents != &percent)
 742                         free(ppercents);
 743
 744         } else if (max_lines && printed >= max_lines)
 745                 return 1;
 746         else {
 747                 int width = 8;
 748
 749                 if (queue)
 750                         return -1;
 751
 752                 if (perf_evsel__is_group_event(evsel))
 753                         width *= evsel->nr_members;
 754
 755                 if (!*dl->line)
 756                         printf(" %*s:\n", width, " ");
 757                 else
 758                         printf(" %*s:   %s\n", width, " ", dl->line);
 759         }
 760
 761         return 0;
 762 }
 763
 764 /*
 765  * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw)
 766  * which looks like following
 767  *
 768  *  0000000000415500 <_init>:
 769  *    415500:       sub    $0x8,%rsp
 770  *    415504:       mov    0x2f5ad5(%rip),%rax        # 70afe0 <_DYNAMIC+0x2f8>
 771  *    41550b:       test   %rax,%rax
 772  *    41550e:       je     415515 <_init+0x15>
 773  *    415510:       callq  416e70 <__gmon_start__@plt>
 774  *    415515:       add    $0x8,%rsp
 775  *    415519:       retq
 776  *
 777  * it will be parsed and saved into struct disasm_line as
 778  *  <offset>       <name>  <ops.raw>
 779  *
 780  * The offset will be a relative offset from the start of the symbol and -1
 781  * means that it's not a disassembly line so should be treated differently.
 782  * The ops.raw part will be parsed further according to type of the instruction.
 783  */
 784 static int symbol__parse_objdump_line(struct symbol *sym, struct map *map,
 785                                       FILE *file, size_t privsize)
 786 {
 787         struct annotation *notes = symbol__annotation(sym);
 788         struct disasm_line *dl;
 789         char *line = NULL, *parsed_line, *tmp, *tmp2, *c;
 790         size_t line_len;
 791         s64 line_ip, offset = -1;
 792
 793         if (getline(&line, &line_len, file) < 0)
 794                 return -1;
 795
 796         if (!line)
 797                 return -1;
 798
 799         while (line_len != 0 && isspace(line[line_len - 1]))
 800                 line[--line_len] = '\0';
 801
 802         c = strchr(line, '\n');
 803         if (c)
 804                 *c = 0;
 805
 806         line_ip = -1;
 807         parsed_line = line;
 808
 809         /*
 810          * Strip leading spaces:
 811          */
 812         tmp = line;
 813         while (*tmp) {
 814                 if (*tmp != ' ')
 815                         break;
 816                 tmp++;
 817         }
 818
 819         if (*tmp) {
 820                 /*
 821                  * Parse hexa addresses followed by ':'
 822                  */
 823                 line_ip = strtoull(tmp, &tmp2, 16);
 824                 if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
 825                         line_ip = -1;
 826         }
 827
 828         if (line_ip != -1) {
 829                 u64 start = map__rip_2objdump(map, sym->start),
 830                     end = map__rip_2objdump(map, sym->end);
 831
 832                 offset = line_ip - start;
 833                 if ((u64)line_ip < start || (u64)line_ip > end)
 834                         offset = -1;
 835                 else
 836                         parsed_line = tmp2 + 1;
 837         }
 838
 839         dl = disasm_line__new(offset, parsed_line, privsize);
 840         free(line);
 841
 842         if (dl == NULL)
 843                 return -1;
 844
 845         if (dl->ops.target.offset == UINT64_MAX)
 846                 dl->ops.target.offset = dl->ops.target.addr -
 847                                         map__rip_2objdump(map, sym->start);
 848
 849         /* kcore has no symbols, so add the call target name */
 850         if (dl->ins && ins__is_call(dl->ins) && !dl->ops.target.name) {
 851                 struct addr_map_symbol target = {
 852                         .map = map,
 853                         .addr = dl->ops.target.addr,
 854                 };
 855
 856                 if (!map_groups__find_ams(&target, NULL) &&
 857                     target.sym->start == target.al_addr)
 858                         dl->ops.target.name = strdup(target.sym->name);
 859         }
 860
 861         disasm__add(&notes->src->source, dl);
 862
 863         return 0;
 864 }
 865
 866 static void delete_last_nop(struct symbol *sym)
 867 {
 868         struct annotation *notes = symbol__annotation(sym);
 869         struct list_head *list = &notes->src->source;
 870         struct disasm_line *dl;
 871
 872         while (!list_empty(list)) {
 873                 dl = list_entry(list->prev, struct disasm_line, node);
 874
 875                 if (dl->ins && dl->ins->ops) {
 876                         if (dl->ins->ops != &nop_ops)
 877                                 return;
 878                 } else {
 879                         if (!strstr(dl->line, " nop ") &&
 880                             !strstr(dl->line, " nopl ") &&
 881                             !strstr(dl->line, " nopw "))
 882                                 return;
 883                 }
 884
 885                 list_del(&dl->node);
 886                 disasm_line__free(dl);
 887         }
 888 }
 889
 890 int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize)
 891 {
 892         struct dso *dso = map->dso;
 893         char *filename = dso__build_id_filename(dso, NULL, 0);
 894         bool free_filename = true;
 895         char command[PATH_MAX * 2];
 896         FILE *file;
 897         int err = 0;
 898         char symfs_filename[PATH_MAX];
 899         struct kcore_extract kce;
 900         bool delete_extract = false;
 901
 902         if (filename)
 903                 symbol__join_symfs(symfs_filename, filename);
 904
 905         if (filename == NULL) {
 906                 if (dso->has_build_id) {
 907                         pr_err("Can't annotate %s: not enough memory\n",
 908                                sym->name);
 909                         return -ENOMEM;
 910                 }
 911                 goto fallback;
 912         } else if (readlink(symfs_filename, command, sizeof(command)) < 0 ||
 913                    strstr(command, "[kernel.kallsyms]") ||
 914                    access(symfs_filename, R_OK)) {
 915                 free(filename);
 916 fallback:
 917                 /*
 918                  * If we don't have build-ids or the build-id file isn't in the
 919                  * cache, or is just a kallsyms file, well, lets hope that this
 920                  * DSO is the same as when 'perf record' ran.
 921                  */
 922                 filename = (char *)dso->long_name;
 923                 symbol__join_symfs(symfs_filename, filename);
 924                 free_filename = false;
 925         }
 926
 927         if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
 928             !dso__is_kcore(dso)) {
 929                 char bf[BUILD_ID_SIZE * 2 + 16] = " with build id ";
 930                 char *build_id_msg = NULL;
 931
 932                 if (dso->annotate_warned)
 933                         goto out_free_filename;
 934
 935                 if (dso->has_build_id) {
 936                         build_id__sprintf(dso->build_id,
 937                                           sizeof(dso->build_id), bf + 15);
 938                         build_id_msg = bf;
 939                 }
 940                 err = -ENOENT;
 941                 dso->annotate_warned = 1;
 942                 pr_err("Can't annotate %s:\n\n"
 943                        "No vmlinux file%s\nwas found in the path.\n\n"
 944                        "Please use:\n\n"
 945                        "  perf buildid-cache -vu vmlinux\n\n"
 946                        "or:\n\n"
 947                        "  --vmlinux vmlinux\n",
 948                        sym->name, build_id_msg ?: "");
 949                 goto out_free_filename;
 950         }
 951
 952         pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
 953                  filename, sym->name, map->unmap_ip(map, sym->start),
 954                  map->unmap_ip(map, sym->end));
 955
 956         pr_debug("annotating [%p] %30s : [%p] %30s\n",
 957                  dso, dso->long_name, sym, sym->name);
 958
 959         if (dso__is_kcore(dso)) {
 960                 kce.kcore_filename = symfs_filename;
 961                 kce.addr = map__rip_2objdump(map, sym->start);
 962                 kce.offs = sym->start;
 963                 kce.len = sym->end + 1 - sym->start;
 964                 if (!kcore_extract__create(&kce)) {
 965                         delete_extract = true;
 966                         strlcpy(symfs_filename, kce.extract_filename,
 967                                 sizeof(symfs_filename));
 968                         if (free_filename) {
 969                                 free(filename);
 970                                 free_filename = false;
 971                         }
 972                         filename = symfs_filename;
 973                 }
 974         }
 975
 976         snprintf(command, sizeof(command),
 977                  "%s %s%s --start-address=0x%016" PRIx64
 978                  " --stop-address=0x%016" PRIx64
 979                  " -d %s %s -C %s 2>/dev/null|grep -v %s|expand",
 980                  objdump_path ? objdump_path : "objdump",
 981                  disassembler_style ? "-M " : "",
 982                  disassembler_style ? disassembler_style : "",
 983                  map__rip_2objdump(map, sym->start),
 984                  map__rip_2objdump(map, sym->end+1),
 985                  symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",
 986                  symbol_conf.annotate_src ? "-S" : "",
 987                  symfs_filename, filename);
 988
 989         pr_debug("Executing: %s\n", command);
 990
 991         file = popen(command, "r");
 992         if (!file)
 993                 goto out_free_filename;
 994
 995         while (!feof(file))
 996                 if (symbol__parse_objdump_line(sym, map, file, privsize) < 0)
 997                         break;
 998
 999         /*
1000          * kallsyms does not have symbol sizes so there may a nop at the end.
1001          * Remove it.
1002          */
1003         if (dso__is_kcore(dso))
1004                 delete_last_nop(sym);
1005
1006         pclose(file);
1007 out_free_filename:
1008         if (delete_extract)
1009                 kcore_extract__delete(&kce);
1010         if (free_filename)
1011                 free(filename);
1012         return err;
1013 }
1014
1015 static void insert_source_line(struct rb_root *root, struct source_line *src_line)
1016 {
1017         struct source_line *iter;
1018         struct rb_node **p = &root->rb_node;
1019         struct rb_node *parent = NULL;
1020         int i, ret;
1021
1022         while (*p != NULL) {
1023                 parent = *p;
1024                 iter = rb_entry(parent, struct source_line, node);
1025
1026                 ret = strcmp(iter->path, src_line->path);
1027                 if (ret == 0) {
1028                         for (i = 0; i < src_line->nr_pcnt; i++)
1029                                 iter->p[i].percent_sum += src_line->p[i].percent;
1030                         return;
1031                 }
1032
1033                 if (ret < 0)
1034                         p = &(*p)->rb_left;
1035                 else
1036                         p = &(*p)->rb_right;
1037         }
1038
1039         for (i = 0; i < src_line->nr_pcnt; i++)
1040                 src_line->p[i].percent_sum = src_line->p[i].percent;
1041
1042         rb_link_node(&src_line->node, parent, p);
1043         rb_insert_color(&src_line->node, root);
1044 }
1045
1046 static int cmp_source_line(struct source_line *a, struct source_line *b)
1047 {
1048         int i;
1049
1050         for (i = 0; i < a->nr_pcnt; i++) {
1051                 if (a->p[i].percent_sum == b->p[i].percent_sum)
1052                         continue;
1053                 return a->p[i].percent_sum > b->p[i].percent_sum;
1054         }
1055
1056         return 0;
1057 }
1058
1059 static void __resort_source_line(struct rb_root *root, struct source_line *src_line)
1060 {
1061         struct source_line *iter;
1062         struct rb_node **p = &root->rb_node;
1063         struct rb_node *parent = NULL;
1064
1065         while (*p != NULL) {
1066                 parent = *p;
1067                 iter = rb_entry(parent, struct source_line, node);
1068
1069                 if (cmp_source_line(src_line, iter))
1070                         p = &(*p)->rb_left;
1071                 else
1072                         p = &(*p)->rb_right;
1073         }
1074
1075         rb_link_node(&src_line->node, parent, p);
1076         rb_insert_color(&src_line->node, root);
1077 }
1078
1079 static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
1080 {
1081         struct source_line *src_line;
1082         struct rb_node *node;
1083
1084         node = rb_first(src_root);
1085         while (node) {
1086                 struct rb_node *next;
1087
1088                 src_line = rb_entry(node, struct source_line, node);
1089                 next = rb_next(node);
1090                 rb_erase(node, src_root);
1091
1092                 __resort_source_line(dest_root, src_line);
1093                 node = next;
1094         }
1095 }
1096
1097 static void symbol__free_source_line(struct symbol *sym, int len)
1098 {
1099         struct annotation *notes = symbol__annotation(sym);
1100         struct source_line *src_line = notes->src->lines;
1101         size_t sizeof_src_line;
1102         int i;
1103
1104         sizeof_src_line = sizeof(*src_line) +
1105                           (sizeof(src_line->p) * (src_line->nr_pcnt - 1));
1106
1107         for (i = 0; i < len; i++) {
1108                 free_srcline(src_line->path);
1109                 src_line = (void *)src_line + sizeof_src_line;
1110         }
1111
1112         zfree(&notes->src->lines);
1113 }
1114
1115 /* Get the filename:line for the colored entries */
1116 static int symbol__get_source_line(struct symbol *sym, struct map *map,
1117                                    struct perf_evsel *evsel,
1118                                    struct rb_root *root, int len)
1119 {
1120         u64 start;
1121         int i, k;
1122         int evidx = evsel->idx;
1123         struct source_line *src_line;
1124         struct annotation *notes = symbol__annotation(sym);
1125         struct sym_hist *h = annotation__histogram(notes, evidx);
1126         struct rb_root tmp_root = RB_ROOT;
1127         int nr_pcnt = 1;
1128         u64 h_sum = h->sum;
1129         size_t sizeof_src_line = sizeof(struct source_line);
1130
1131         if (perf_evsel__is_group_event(evsel)) {
1132                 for (i = 1; i < evsel->nr_members; i++) {
1133                         h = annotation__histogram(notes, evidx + i);
1134                         h_sum += h->sum;
1135                 }
1136                 nr_pcnt = evsel->nr_members;
1137                 sizeof_src_line += (nr_pcnt - 1) * sizeof(src_line->p);
1138         }
1139
1140         if (!h_sum)
1141                 return 0;
1142
1143         src_line = notes->src->lines = calloc(len, sizeof_src_line);
1144         if (!notes->src->lines)
1145                 return -1;
1146
1147         start = map__rip_2objdump(map, sym->start);
1148
1149         for (i = 0; i < len; i++) {
1150                 u64 offset;
1151                 double percent_max = 0.0;
1152
1153                 src_line->nr_pcnt = nr_pcnt;
1154
1155                 for (k = 0; k < nr_pcnt; k++) {
1156                         h = annotation__histogram(notes, evidx + k);
1157                         src_line->p[k].percent = 100.0 * h->addr[i] / h->sum;
1158
1159                         if (src_line->p[k].percent > percent_max)
1160                                 percent_max = src_line->p[k].percent;
1161                 }
1162
1163                 if (percent_max <= 0.5)
1164                         goto next;
1165
1166                 offset = start + i;
1167                 src_line->path = get_srcline(map->dso, offset);
1168                 insert_source_line(&tmp_root, src_line);
1169
1170         next:
1171                 src_line = (void *)src_line + sizeof_src_line;
1172         }
1173
1174         resort_source_line(root, &tmp_root);
1175         return 0;
1176 }
1177
1178 static void print_summary(struct rb_root *root, const char *filename)
1179 {
1180         struct source_line *src_line;
1181         struct rb_node *node;
1182
1183         printf("\nSorted summary for file %s\n", filename);
1184         printf("----------------------------------------------\n\n");
1185
1186         if (RB_EMPTY_ROOT(root)) {
1187                 printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
1188                 return;
1189         }
1190
1191         node = rb_first(root);
1192         while (node) {
1193                 double percent, percent_max = 0.0;
1194                 const char *color;
1195                 char *path;
1196                 int i;
1197
1198                 src_line = rb_entry(node, struct source_line, node);
1199                 for (i = 0; i < src_line->nr_pcnt; i++) {
1200                         percent = src_line->p[i].percent_sum;
1201                         color = get_percent_color(percent);
1202                         color_fprintf(stdout, color, " %7.2f", percent);
1203
1204                         if (percent > percent_max)
1205                                 percent_max = percent;
1206                 }
1207
1208                 path = src_line->path;
1209                 color = get_percent_color(percent_max);
1210                 color_fprintf(stdout, color, " %s\n", path);
1211
1212                 node = rb_next(node);
1213         }
1214 }
1215
1216 static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel)
1217 {
1218         struct annotation *notes = symbol__annotation(sym);
1219         struct sym_hist *h = annotation__histogram(notes, evsel->idx);
1220         u64 len = symbol__size(sym), offset;
1221
1222         for (offset = 0; offset < len; ++offset)
1223                 if (h->addr[offset] != 0)
1224                         printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
1225                                sym->start + offset, h->addr[offset]);
1226         printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum);
1227 }
1228
1229 int symbol__annotate_printf(struct symbol *sym, struct map *map,
1230                             struct perf_evsel *evsel, bool full_paths,
1231                             int min_pcnt, int max_lines, int context)
1232 {
1233         struct dso *dso = map->dso;
1234         char *filename;
1235         const char *d_filename;
1236         const char *evsel_name = perf_evsel__name(evsel);
1237         struct annotation *notes = symbol__annotation(sym);
1238         struct disasm_line *pos, *queue = NULL;
1239         u64 start = map__rip_2objdump(map, sym->start);
1240         int printed = 2, queue_len = 0;
1241         int more = 0;
1242         u64 len;
1243         int width = 8;
1244         int namelen, evsel_name_len, graph_dotted_len;
1245
1246         filename = strdup(dso->long_name);
1247         if (!filename)
1248                 return -ENOMEM;
1249
1250         if (full_paths)
1251                 d_filename = filename;
1252         else
1253                 d_filename = basename(filename);
1254
1255         len = symbol__size(sym);
1256         namelen = strlen(d_filename);
1257         evsel_name_len = strlen(evsel_name);
1258
1259         if (perf_evsel__is_group_event(evsel))
1260                 width *= evsel->nr_members;
1261
1262         printf(" %-*.*s|        Source code & Disassembly of %s for %s\n",
1263                width, width, "Percent", d_filename, evsel_name);
1264
1265         graph_dotted_len = width + namelen + evsel_name_len;
1266         printf("-%-*.*s-----------------------------------------\n",
1267                graph_dotted_len, graph_dotted_len, graph_dotted_line);
1268
1269         if (verbose)
1270                 symbol__annotate_hits(sym, evsel);
1271
1272         list_for_each_entry(pos, &notes->src->source, node) {
1273                 if (context && queue == NULL) {
1274                         queue = pos;
1275                         queue_len = 0;
1276                 }
1277
1278                 switch (disasm_line__print(pos, sym, start, evsel, len,
1279                                             min_pcnt, printed, max_lines,
1280                                             queue)) {
1281                 case 0:
1282                         ++printed;
1283                         if (context) {
1284                                 printed += queue_len;
1285                                 queue = NULL;
1286                                 queue_len = 0;
1287                         }
1288                         break;
1289                 case 1:
1290                         /* filtered by max_lines */
1291                         ++more;
1292                         break;
1293                 case -1:
1294                 default:
1295                         /*
1296                          * Filtered by min_pcnt or non IP lines when
1297                          * context != 0
1298                          */
1299                         if (!context)
1300                                 break;
1301                         if (queue_len == context)
1302                                 queue = list_entry(queue->node.next, typeof(*queue), node);
1303                         else
1304                                 ++queue_len;
1305                         break;
1306                 }
1307         }
1308
1309         free(filename);
1310
1311         return more;
1312 }
1313
1314 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
1315 {
1316         struct annotation *notes = symbol__annotation(sym);
1317         struct sym_hist *h = annotation__histogram(notes, evidx);
1318
1319         memset(h, 0, notes->src->sizeof_sym_hist);
1320 }
1321
1322 void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
1323 {
1324         struct annotation *notes = symbol__annotation(sym);
1325         struct sym_hist *h = annotation__histogram(notes, evidx);
1326         int len = symbol__size(sym), offset;
1327
1328         h->sum = 0;
1329         for (offset = 0; offset < len; ++offset) {
1330                 h->addr[offset] = h->addr[offset] * 7 / 8;
1331                 h->sum += h->addr[offset];
1332         }
1333 }
1334
1335 void disasm__purge(struct list_head *head)
1336 {
1337         struct disasm_line *pos, *n;
1338
1339         list_for_each_entry_safe(pos, n, head, node) {
1340                 list_del(&pos->node);
1341                 disasm_line__free(pos);
1342         }
1343 }
1344
1345 static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
1346 {
1347         size_t printed;
1348
1349         if (dl->offset == -1)
1350                 return fprintf(fp, "%s\n", dl->line);
1351
1352         printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->name);
1353
1354         if (dl->ops.raw[0] != '\0') {
1355                 printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
1356                                    dl->ops.raw);
1357         }
1358
1359         return printed + fprintf(fp, "\n");
1360 }
1361
1362 size_t disasm__fprintf(struct list_head *head, FILE *fp)
1363 {
1364         struct disasm_line *pos;
1365         size_t printed = 0;
1366
1367         list_for_each_entry(pos, head, node)
1368                 printed += disasm_line__fprintf(pos, fp);
1369
1370         return printed;
1371 }
1372
1373 int symbol__tty_annotate(struct symbol *sym, struct map *map,
1374                          struct perf_evsel *evsel, bool print_lines,
1375                          bool full_paths, int min_pcnt, int max_lines)
1376 {
1377         struct dso *dso = map->dso;
1378         struct rb_root source_line = RB_ROOT;
1379         u64 len;
1380
1381         if (symbol__annotate(sym, map, 0) < 0)
1382                 return -1;
1383
1384         len = symbol__size(sym);
1385
1386         if (print_lines) {
1387                 symbol__get_source_line(sym, map, evsel, &source_line, len);
1388                 print_summary(&source_line, dso->long_name);
1389         }
1390
1391         symbol__annotate_printf(sym, map, evsel, full_paths,
1392                                 min_pcnt, max_lines, 0);
1393         if (print_lines)
1394                 symbol__free_source_line(sym, len);
1395
1396         disasm__purge(&symbol__annotation(sym)->src->source);
1397
1398         return 0;
1399 }
1400
1401 int hist_entry__annotate(struct hist_entry *he, size_t privsize)
1402 {
1403         return symbol__annotate(he->ms.sym, he->ms.map, privsize);
1404 }
1405
1406 bool ui__has_annotation(void)
1407 {
1408         return use_browser == 1 && sort__has_sym;
1409 }