tools/perf/util/sort.c

   1 #include "sort.h"
   2 #include "hist.h"
   3
   4 regex_t         parent_regex;
   5 const char      default_parent_pattern[] = "^sys_|^do_page_fault";
   6 const char      *parent_pattern = default_parent_pattern;
   7 const char      default_sort_order[] = "comm,dso,symbol";
   8 const char      *sort_order = default_sort_order;
   9 int             sort__need_collapse = 0;
  10 int             sort__has_parent = 0;
  11 int             sort__branch_mode = -1; /* -1 = means not set */
  12
  13 enum sort_type  sort__first_dimension;
  14
  15 char * field_sep;
  16
  17 LIST_HEAD(hist_entry__sort_list);
  18
  19 static int repsep_snprintf(char *bf, size_t size, const char *fmt, ...)
  20 {
  21         int n;
  22         va_list ap;
  23
  24         va_start(ap, fmt);
  25         n = vsnprintf(bf, size, fmt, ap);
  26         if (field_sep && n > 0) {
  27                 char *sep = bf;
  28
  29                 while (1) {
  30                         sep = strchr(sep, *field_sep);
  31                         if (sep == NULL)
  32                                 break;
  33                         *sep = '.';
  34                 }
  35         }
  36         va_end(ap);
  37
  38         if (n >= (int)size)
  39                 return size - 1;
  40         return n;
  41 }
  42
  43 static int64_t cmp_null(void *l, void *r)
  44 {
  45         if (!l && !r)
  46                 return 0;
  47         else if (!l)
  48                 return -1;
  49         else
  50                 return 1;
  51 }
  52
  53 /* --sort pid */
  54
  55 static int64_t
  56 sort__thread_cmp(struct hist_entry *left, struct hist_entry *right)
  57 {
  58         return right->thread->pid - left->thread->pid;
  59 }
  60
  61 static int hist_entry__thread_snprintf(struct hist_entry *self, char *bf,
  62                                        size_t size, unsigned int width)
  63 {
  64         return repsep_snprintf(bf, size, "%*s:%5d", width,
  65                               self->thread->comm ?: "", self->thread->pid);
  66 }
  67
  68 struct sort_entry sort_thread = {
  69         .se_header      = "Command:  Pid",
  70         .se_cmp         = sort__thread_cmp,
  71         .se_snprintf    = hist_entry__thread_snprintf,
  72         .se_width_idx   = HISTC_THREAD,
  73 };
  74
  75 /* --sort comm */
  76
  77 static int64_t
  78 sort__comm_cmp(struct hist_entry *left, struct hist_entry *right)
  79 {
  80         return right->thread->pid - left->thread->pid;
  81 }
  82
  83 static int64_t
  84 sort__comm_collapse(struct hist_entry *left, struct hist_entry *right)
  85 {
  86         char *comm_l = left->thread->comm;
  87         char *comm_r = right->thread->comm;
  88
  89         if (!comm_l || !comm_r)
  90                 return cmp_null(comm_l, comm_r);
  91
  92         return strcmp(comm_l, comm_r);
  93 }
  94
  95 static int hist_entry__comm_snprintf(struct hist_entry *self, char *bf,
  96                                      size_t size, unsigned int width)
  97 {
  98         return repsep_snprintf(bf, size, "%*s", width, self->thread->comm);
  99 }
 100
 101 static int64_t _sort__dso_cmp(struct map *map_l, struct map *map_r)
 102 {
 103         struct dso *dso_l = map_l ? map_l->dso : NULL;
 104         struct dso *dso_r = map_r ? map_r->dso : NULL;
 105         const char *dso_name_l, *dso_name_r;
 106
 107         if (!dso_l || !dso_r)
 108                 return cmp_null(dso_l, dso_r);
 109
 110         if (verbose) {
 111                 dso_name_l = dso_l->long_name;
 112                 dso_name_r = dso_r->long_name;
 113         } else {
 114                 dso_name_l = dso_l->short_name;
 115                 dso_name_r = dso_r->short_name;
 116         }
 117
 118         return strcmp(dso_name_l, dso_name_r);
 119 }
 120
 121 struct sort_entry sort_comm = {
 122         .se_header      = "Command",
 123         .se_cmp         = sort__comm_cmp,
 124         .se_collapse    = sort__comm_collapse,
 125         .se_snprintf    = hist_entry__comm_snprintf,
 126         .se_width_idx   = HISTC_COMM,
 127 };
 128
 129 /* --sort dso */
 130
 131 static int64_t
 132 sort__dso_cmp(struct hist_entry *left, struct hist_entry *right)
 133 {
 134         return _sort__dso_cmp(left->ms.map, right->ms.map);
 135 }
 136
 137
 138 static int64_t _sort__sym_cmp(struct symbol *sym_l, struct symbol *sym_r,
 139                               u64 ip_l, u64 ip_r)
 140 {
 141         if (!sym_l || !sym_r)
 142                 return cmp_null(sym_l, sym_r);
 143
 144         if (sym_l == sym_r)
 145                 return 0;
 146
 147         if (sym_l)
 148                 ip_l = sym_l->start;
 149         if (sym_r)
 150                 ip_r = sym_r->start;
 151
 152         return (int64_t)(ip_r - ip_l);
 153 }
 154
 155 static int _hist_entry__dso_snprintf(struct map *map, char *bf,
 156                                      size_t size, unsigned int width)
 157 {
 158         if (map && map->dso) {
 159                 const char *dso_name = !verbose ? map->dso->short_name :
 160                         map->dso->long_name;
 161                 return repsep_snprintf(bf, size, "%-*s", width, dso_name);
 162         }
 163
 164         return repsep_snprintf(bf, size, "%-*s", width, "[unknown]");
 165 }
 166
 167 static int hist_entry__dso_snprintf(struct hist_entry *self, char *bf,
 168                                     size_t size, unsigned int width)
 169 {
 170         return _hist_entry__dso_snprintf(self->ms.map, bf, size, width);
 171 }
 172
 173 static int _hist_entry__sym_snprintf(struct map *map, struct symbol *sym,
 174                                      u64 ip, char level, char *bf, size_t size,
 175                                      unsigned int width __used)
 176 {
 177         size_t ret = 0;
 178
 179         if (verbose) {
 180                 char o = map ? dso__symtab_origin(map->dso) : '!';
 181                 ret += repsep_snprintf(bf, size, "%-#*llx %c ",
 182                                        BITS_PER_LONG / 4, ip, o);
 183         }
 184
 185         ret += repsep_snprintf(bf + ret, size - ret, "[%c] ", level);
 186         if (sym)
 187                 ret += repsep_snprintf(bf + ret, size - ret, "%-*s",
 188                                        width - ret,
 189                                        sym->name);
 190         else {
 191                 size_t len = BITS_PER_LONG / 4;
 192                 ret += repsep_snprintf(bf + ret, size - ret, "%-#.*llx",
 193                                        len, ip);
 194                 ret += repsep_snprintf(bf + ret, size - ret, "%-*s",
 195                                        width - ret, "");
 196         }
 197
 198         return ret;
 199 }
 200
 201
 202 struct sort_entry sort_dso = {
 203         .se_header      = "Shared Object",
 204         .se_cmp         = sort__dso_cmp,
 205         .se_snprintf    = hist_entry__dso_snprintf,
 206         .se_width_idx   = HISTC_DSO,
 207 };
 208
 209 static int hist_entry__sym_snprintf(struct hist_entry *self, char *bf,
 210                                     size_t size, unsigned int width __used)
 211 {
 212         return _hist_entry__sym_snprintf(self->ms.map, self->ms.sym, self->ip,
 213                                          self->level, bf, size, width);
 214 }
 215
 216 /* --sort symbol */
 217 static int64_t
 218 sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
 219 {
 220         u64 ip_l, ip_r;
 221
 222         if (!left->ms.sym && !right->ms.sym)
 223                 return right->level - left->level;
 224
 225         if (!left->ms.sym || !right->ms.sym)
 226                 return cmp_null(left->ms.sym, right->ms.sym);
 227
 228         if (left->ms.sym == right->ms.sym)
 229                 return 0;
 230
 231         ip_l = left->ms.sym->start;
 232         ip_r = right->ms.sym->start;
 233
 234         return _sort__sym_cmp(left->ms.sym, right->ms.sym, ip_l, ip_r);
 235 }
 236
 237 struct sort_entry sort_sym = {
 238         .se_header      = "Symbol",
 239         .se_cmp         = sort__sym_cmp,
 240         .se_snprintf    = hist_entry__sym_snprintf,
 241         .se_width_idx   = HISTC_SYMBOL,
 242 };
 243
 244 /* --sort srcline */
 245
 246 static int64_t
 247 sort__srcline_cmp(struct hist_entry *left, struct hist_entry *right)
 248 {
 249         return (int64_t)(right->ip - left->ip);
 250 }
 251
 252 static int hist_entry__srcline_snprintf(struct hist_entry *self, char *bf,
 253                                    size_t size, unsigned int width __used)
 254 {
 255         FILE *fp;
 256         char cmd[PATH_MAX + 2], *path = self->srcline, *nl;
 257         size_t line_len;
 258
 259         if (path != NULL)
 260                 goto out_path;
 261
 262         snprintf(cmd, sizeof(cmd), "addr2line -e %s %016" PRIx64,
 263                  self->ms.map->dso->long_name, self->ip);
 264         fp = popen(cmd, "r");
 265         if (!fp)
 266                 goto out_ip;
 267
 268         if (getline(&path, &line_len, fp) < 0 || !line_len)
 269                 goto out_ip;
 270         fclose(fp);
 271         self->srcline = strdup(path);
 272         if (self->srcline == NULL)
 273                 goto out_ip;
 274
 275         nl = strchr(self->srcline, '\n');
 276         if (nl != NULL)
 277                 *nl = '\0';
 278         path = self->srcline;
 279 out_path:
 280         return repsep_snprintf(bf, size, "%s", path);
 281 out_ip:
 282         return repsep_snprintf(bf, size, "%-#*llx", BITS_PER_LONG / 4, self->ip);
 283 }
 284
 285 struct sort_entry sort_srcline = {
 286         .se_header      = "Source:Line",
 287         .se_cmp         = sort__srcline_cmp,
 288         .se_snprintf    = hist_entry__srcline_snprintf,
 289         .se_width_idx   = HISTC_SRCLINE,
 290 };
 291
 292 /* --sort parent */
 293
 294 static int64_t
 295 sort__parent_cmp(struct hist_entry *left, struct hist_entry *right)
 296 {
 297         struct symbol *sym_l = left->parent;
 298         struct symbol *sym_r = right->parent;
 299
 300         if (!sym_l || !sym_r)
 301                 return cmp_null(sym_l, sym_r);
 302
 303         return strcmp(sym_l->name, sym_r->name);
 304 }
 305
 306 static int hist_entry__parent_snprintf(struct hist_entry *self, char *bf,
 307                                        size_t size, unsigned int width)
 308 {
 309         return repsep_snprintf(bf, size, "%-*s", width,
 310                               self->parent ? self->parent->name : "[other]");
 311 }
 312
 313 struct sort_entry sort_parent = {
 314         .se_header      = "Parent symbol",
 315         .se_cmp         = sort__parent_cmp,
 316         .se_snprintf    = hist_entry__parent_snprintf,
 317         .se_width_idx   = HISTC_PARENT,
 318 };
 319
 320 /* --sort cpu */
 321
 322 static int64_t
 323 sort__cpu_cmp(struct hist_entry *left, struct hist_entry *right)
 324 {
 325         return right->cpu - left->cpu;
 326 }
 327
 328 static int hist_entry__cpu_snprintf(struct hist_entry *self, char *bf,
 329                                        size_t size, unsigned int width)
 330 {
 331         return repsep_snprintf(bf, size, "%-*d", width, self->cpu);
 332 }
 333
 334 struct sort_entry sort_cpu = {
 335         .se_header      = "CPU",
 336         .se_cmp         = sort__cpu_cmp,
 337         .se_snprintf    = hist_entry__cpu_snprintf,
 338         .se_width_idx   = HISTC_CPU,
 339 };
 340
 341 static int64_t
 342 sort__dso_from_cmp(struct hist_entry *left, struct hist_entry *right)
 343 {
 344         return _sort__dso_cmp(left->branch_info->from.map,
 345                               right->branch_info->from.map);
 346 }
 347
 348 static int hist_entry__dso_from_snprintf(struct hist_entry *self, char *bf,
 349                                     size_t size, unsigned int width)
 350 {
 351         return _hist_entry__dso_snprintf(self->branch_info->from.map,
 352                                          bf, size, width);
 353 }
 354
 355 struct sort_entry sort_dso_from = {
 356         .se_header      = "Source Shared Object",
 357         .se_cmp         = sort__dso_from_cmp,
 358         .se_snprintf    = hist_entry__dso_from_snprintf,
 359         .se_width_idx   = HISTC_DSO_FROM,
 360 };
 361
 362 static int64_t
 363 sort__dso_to_cmp(struct hist_entry *left, struct hist_entry *right)
 364 {
 365         return _sort__dso_cmp(left->branch_info->to.map,
 366                               right->branch_info->to.map);
 367 }
 368
 369 static int hist_entry__dso_to_snprintf(struct hist_entry *self, char *bf,
 370                                        size_t size, unsigned int width)
 371 {
 372         return _hist_entry__dso_snprintf(self->branch_info->to.map,
 373                                          bf, size, width);
 374 }
 375
 376 static int64_t
 377 sort__sym_from_cmp(struct hist_entry *left, struct hist_entry *right)
 378 {
 379         struct addr_map_symbol *from_l = &left->branch_info->from;
 380         struct addr_map_symbol *from_r = &right->branch_info->from;
 381
 382         if (!from_l->sym && !from_r->sym)
 383                 return right->level - left->level;
 384
 385         return _sort__sym_cmp(from_l->sym, from_r->sym, from_l->addr,
 386                              from_r->addr);
 387 }
 388
 389 static int64_t
 390 sort__sym_to_cmp(struct hist_entry *left, struct hist_entry *right)
 391 {
 392         struct addr_map_symbol *to_l = &left->branch_info->to;
 393         struct addr_map_symbol *to_r = &right->branch_info->to;
 394
 395         if (!to_l->sym && !to_r->sym)
 396                 return right->level - left->level;
 397
 398         return _sort__sym_cmp(to_l->sym, to_r->sym, to_l->addr, to_r->addr);
 399 }
 400
 401 static int hist_entry__sym_from_snprintf(struct hist_entry *self, char *bf,
 402                                     size_t size, unsigned int width __used)
 403 {
 404         struct addr_map_symbol *from = &self->branch_info->from;
 405         return _hist_entry__sym_snprintf(from->map, from->sym, from->addr,
 406                                          self->level, bf, size, width);
 407
 408 }
 409
 410 static int hist_entry__sym_to_snprintf(struct hist_entry *self, char *bf,
 411                                     size_t size, unsigned int width __used)
 412 {
 413         struct addr_map_symbol *to = &self->branch_info->to;
 414         return _hist_entry__sym_snprintf(to->map, to->sym, to->addr,
 415                                          self->level, bf, size, width);
 416
 417 }
 418
 419 struct sort_entry sort_dso_to = {
 420         .se_header      = "Target Shared Object",
 421         .se_cmp         = sort__dso_to_cmp,
 422         .se_snprintf    = hist_entry__dso_to_snprintf,
 423         .se_width_idx   = HISTC_DSO_TO,
 424 };
 425
 426 struct sort_entry sort_sym_from = {
 427         .se_header      = "Source Symbol",
 428         .se_cmp         = sort__sym_from_cmp,
 429         .se_snprintf    = hist_entry__sym_from_snprintf,
 430         .se_width_idx   = HISTC_SYMBOL_FROM,
 431 };
 432
 433 struct sort_entry sort_sym_to = {
 434         .se_header      = "Target Symbol",
 435         .se_cmp         = sort__sym_to_cmp,
 436         .se_snprintf    = hist_entry__sym_to_snprintf,
 437         .se_width_idx   = HISTC_SYMBOL_TO,
 438 };
 439
 440 static int64_t
 441 sort__mispredict_cmp(struct hist_entry *left, struct hist_entry *right)
 442 {
 443         const unsigned char mp = left->branch_info->flags.mispred !=
 444                                         right->branch_info->flags.mispred;
 445         const unsigned char p = left->branch_info->flags.predicted !=
 446                                         right->branch_info->flags.predicted;
 447
 448         return mp || p;
 449 }
 450
 451 static int hist_entry__mispredict_snprintf(struct hist_entry *self, char *bf,
 452                                     size_t size, unsigned int width){
 453         static const char *out = "N/A";
 454
 455         if (self->branch_info->flags.predicted)
 456                 out = "N";
 457         else if (self->branch_info->flags.mispred)
 458                 out = "Y";
 459
 460         return repsep_snprintf(bf, size, "%-*s", width, out);
 461 }
 462
 463 struct sort_entry sort_mispredict = {
 464         .se_header      = "Branch Mispredicted",
 465         .se_cmp         = sort__mispredict_cmp,
 466         .se_snprintf    = hist_entry__mispredict_snprintf,
 467         .se_width_idx   = HISTC_MISPREDICT,
 468 };
 469
 470 struct sort_dimension {
 471         const char              *name;
 472         struct sort_entry       *entry;
 473         int                     taken;
 474 };
 475
 476 #define DIM(d, n, func) [d] = { .name = n, .entry = &(func) }
 477
 478 static struct sort_dimension sort_dimensions[] = {
 479         DIM(SORT_PID, "pid", sort_thread),
 480         DIM(SORT_COMM, "comm", sort_comm),
 481         DIM(SORT_DSO, "dso", sort_dso),
 482         DIM(SORT_DSO_FROM, "dso_from", sort_dso_from),
 483         DIM(SORT_DSO_TO, "dso_to", sort_dso_to),
 484         DIM(SORT_SYM, "symbol", sort_sym),
 485         DIM(SORT_SYM_TO, "symbol_from", sort_sym_from),
 486         DIM(SORT_SYM_FROM, "symbol_to", sort_sym_to),
 487         DIM(SORT_PARENT, "parent", sort_parent),
 488         DIM(SORT_CPU, "cpu", sort_cpu),
 489         DIM(SORT_MISPREDICT, "mispredict", sort_mispredict),
 490         DIM(SORT_SRCLINE, "srcline", sort_srcline),
 491 };
 492
 493 int sort_dimension__add(const char *tok)
 494 {
 495         unsigned int i;
 496
 497         for (i = 0; i < ARRAY_SIZE(sort_dimensions); i++) {
 498                 struct sort_dimension *sd = &sort_dimensions[i];
 499
 500                 if (strncasecmp(tok, sd->name, strlen(tok)))
 501                         continue;
 502                 if (sd->entry == &sort_parent) {
 503                         int ret = regcomp(&parent_regex, parent_pattern, REG_EXTENDED);
 504                         if (ret) {
 505                                 char err[BUFSIZ];
 506
 507                                 regerror(ret, &parent_regex, err, sizeof(err));
 508                                 pr_err("Invalid regex: %s\n%s", parent_pattern, err);
 509                                 return -EINVAL;
 510                         }
 511                         sort__has_parent = 1;
 512                 }
 513
 514                 if (sd->taken)
 515                         return 0;
 516
 517                 if (sd->entry->se_collapse)
 518                         sort__need_collapse = 1;
 519
 520                 if (list_empty(&hist_entry__sort_list)) {
 521                         if (!strcmp(sd->name, "pid"))
 522                                 sort__first_dimension = SORT_PID;
 523                         else if (!strcmp(sd->name, "comm"))
 524                                 sort__first_dimension = SORT_COMM;
 525                         else if (!strcmp(sd->name, "dso"))
 526                                 sort__first_dimension = SORT_DSO;
 527                         else if (!strcmp(sd->name, "symbol"))
 528                                 sort__first_dimension = SORT_SYM;
 529                         else if (!strcmp(sd->name, "parent"))
 530                                 sort__first_dimension = SORT_PARENT;
 531                         else if (!strcmp(sd->name, "cpu"))
 532                                 sort__first_dimension = SORT_CPU;
 533                         else if (!strcmp(sd->name, "symbol_from"))
 534                                 sort__first_dimension = SORT_SYM_FROM;
 535                         else if (!strcmp(sd->name, "symbol_to"))
 536                                 sort__first_dimension = SORT_SYM_TO;
 537                         else if (!strcmp(sd->name, "dso_from"))
 538                                 sort__first_dimension = SORT_DSO_FROM;
 539                         else if (!strcmp(sd->name, "dso_to"))
 540                                 sort__first_dimension = SORT_DSO_TO;
 541                         else if (!strcmp(sd->name, "mispredict"))
 542                                 sort__first_dimension = SORT_MISPREDICT;
 543                 }
 544
 545                 list_add_tail(&sd->entry->list, &hist_entry__sort_list);
 546                 sd->taken = 1;
 547
 548                 return 0;
 549         }
 550         return -ESRCH;
 551 }
 552
 553 void setup_sorting(const char * const usagestr[], const struct option *opts)
 554 {
 555         char *tmp, *tok, *str = strdup(sort_order);
 556
 557         for (tok = strtok_r(str, ", ", &tmp);
 558                         tok; tok = strtok_r(NULL, ", ", &tmp)) {
 559                 if (sort_dimension__add(tok) < 0) {
 560                         error("Unknown --sort key: `%s'", tok);
 561                         usage_with_options(usagestr, opts);
 562                 }
 563         }
 564
 565         free(str);
 566 }
 567
 568 void sort_entry__setup_elide(struct sort_entry *self, struct strlist *list,
 569                              const char *list_name, FILE *fp)
 570 {
 571         if (list && strlist__nr_entries(list) == 1) {
 572                 if (fp != NULL)
 573                         fprintf(fp, "# %s: %s\n", list_name,
 574                                 strlist__entry(list, 0)->s);
 575                 self->elide = true;
 576         }
 577 }