tools/perf/util/hist.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __PERF_HIST_H
   3 #define __PERF_HIST_H
   4
   5 #include <linux/rbtree.h>
   6 #include <linux/types.h>
   7 #include <pthread.h>
   8 #include "evsel.h"
   9 #include "color.h"
  10 #include "events_stats.h"
  11
  12 struct hist_entry;
  13 struct hist_entry_ops;
  14 struct addr_location;
  15 struct map_symbol;
  16 struct mem_info;
  17 struct branch_info;
  18 struct branch_stack;
  19 struct block_info;
  20 struct symbol;
  21 struct ui_progress;
  22
  23 enum hist_filter {
  24         HIST_FILTER__DSO,
  25         HIST_FILTER__THREAD,
  26         HIST_FILTER__PARENT,
  27         HIST_FILTER__SYMBOL,
  28         HIST_FILTER__GUEST,
  29         HIST_FILTER__HOST,
  30         HIST_FILTER__SOCKET,
  31         HIST_FILTER__C2C,
  32 };
  33
  34 enum hist_column {
  35         HISTC_SYMBOL,
  36         HISTC_TIME,
  37         HISTC_DSO,
  38         HISTC_THREAD,
  39         HISTC_COMM,
  40         HISTC_CGROUP_ID,
  41         HISTC_CGROUP,
  42         HISTC_PARENT,
  43         HISTC_CPU,
  44         HISTC_SOCKET,
  45         HISTC_SRCLINE,
  46         HISTC_SRCFILE,
  47         HISTC_MISPREDICT,
  48         HISTC_IN_TX,
  49         HISTC_ABORT,
  50         HISTC_SYMBOL_FROM,
  51         HISTC_SYMBOL_TO,
  52         HISTC_DSO_FROM,
  53         HISTC_DSO_TO,
  54         HISTC_LOCAL_WEIGHT,
  55         HISTC_GLOBAL_WEIGHT,
  56         HISTC_MEM_DADDR_SYMBOL,
  57         HISTC_MEM_DADDR_DSO,
  58         HISTC_MEM_PHYS_DADDR,
  59         HISTC_MEM_LOCKED,
  60         HISTC_MEM_TLB,
  61         HISTC_MEM_LVL,
  62         HISTC_MEM_SNOOP,
  63         HISTC_MEM_DCACHELINE,
  64         HISTC_MEM_IADDR_SYMBOL,
  65         HISTC_TRANSACTION,
  66         HISTC_CYCLES,
  67         HISTC_SRCLINE_FROM,
  68         HISTC_SRCLINE_TO,
  69         HISTC_TRACE,
  70         HISTC_SYM_SIZE,
  71         HISTC_DSO_SIZE,
  72         HISTC_SYMBOL_IPC,
  73         HISTC_NR_COLS, /* Last entry */
  74 };
  75
  76 struct thread;
  77 struct dso;
  78
  79 struct hists {
  80         struct rb_root_cached   entries_in_array[2];
  81         struct rb_root_cached   *entries_in;
  82         struct rb_root_cached   entries;
  83         struct rb_root_cached   entries_collapsed;
  84         u64                     nr_entries;
  85         u64                     nr_non_filtered_entries;
  86         u64                     callchain_period;
  87         u64                     callchain_non_filtered_period;
  88         struct thread           *thread_filter;
  89         const struct dso        *dso_filter;
  90         const char              *uid_filter_str;
  91         const char              *symbol_filter_str;
  92         pthread_mutex_t         lock;
  93         struct events_stats     stats;
  94         u64                     event_stream;
  95         u16                     col_len[HISTC_NR_COLS];
  96         bool                    has_callchains;
  97         int                     socket_filter;
  98         struct perf_hpp_list    *hpp_list;
  99         struct list_head        hpp_formats;
 100         int                     nr_hpp_node;
 101 };
 102
 103 #define hists__has(__h, __f) (__h)->hpp_list->__f
 104
 105 struct hist_entry_iter;
 106
 107 struct hist_iter_ops {
 108         int (*prepare_entry)(struct hist_entry_iter *, struct addr_location *);
 109         int (*add_single_entry)(struct hist_entry_iter *, struct addr_location *);
 110         int (*next_entry)(struct hist_entry_iter *, struct addr_location *);
 111         int (*add_next_entry)(struct hist_entry_iter *, struct addr_location *);
 112         int (*finish_entry)(struct hist_entry_iter *, struct addr_location *);
 113 };
 114
 115 struct hist_entry_iter {
 116         int total;
 117         int curr;
 118
 119         bool hide_unresolved;
 120
 121         struct evsel *evsel;
 122         struct perf_sample *sample;
 123         struct hist_entry *he;
 124         struct symbol *parent;
 125         void *priv;
 126
 127         const struct hist_iter_ops *ops;
 128         /* user-defined callback function (optional) */
 129         int (*add_entry_cb)(struct hist_entry_iter *iter,
 130                             struct addr_location *al, bool single, void *arg);
 131 };
 132
 133 extern const struct hist_iter_ops hist_iter_normal;
 134 extern const struct hist_iter_ops hist_iter_branch;
 135 extern const struct hist_iter_ops hist_iter_mem;
 136 extern const struct hist_iter_ops hist_iter_cumulative;
 137
 138 struct hist_entry *hists__add_entry(struct hists *hists,
 139                                     struct addr_location *al,
 140                                     struct symbol *parent,
 141                                     struct branch_info *bi,
 142                                     struct mem_info *mi,
 143                                     struct perf_sample *sample,
 144                                     bool sample_self);
 145
 146 struct hist_entry *hists__add_entry_ops(struct hists *hists,
 147                                         struct hist_entry_ops *ops,
 148                                         struct addr_location *al,
 149                                         struct symbol *sym_parent,
 150                                         struct branch_info *bi,
 151                                         struct mem_info *mi,
 152                                         struct perf_sample *sample,
 153                                         bool sample_self);
 154
 155 struct hist_entry *hists__add_entry_block(struct hists *hists,
 156                                           struct addr_location *al,
 157                                           struct block_info *bi);
 158
 159 int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al,
 160                          int max_stack_depth, void *arg);
 161
 162 struct perf_hpp;
 163 struct perf_hpp_fmt;
 164
 165 int64_t hist_entry__cmp(struct hist_entry *left, struct hist_entry *right);
 166 int64_t hist_entry__collapse(struct hist_entry *left, struct hist_entry *right);
 167 int hist_entry__transaction_len(void);
 168 int hist_entry__sort_snprintf(struct hist_entry *he, char *bf, size_t size,
 169                               struct hists *hists);
 170 int hist_entry__snprintf_alignment(struct hist_entry *he, struct perf_hpp *hpp,
 171                                    struct perf_hpp_fmt *fmt, int printed);
 172 void hist_entry__delete(struct hist_entry *he);
 173
 174 typedef int (*hists__resort_cb_t)(struct hist_entry *he, void *arg);
 175
 176 void evsel__output_resort_cb(struct evsel *evsel, struct ui_progress *prog,
 177                              hists__resort_cb_t cb, void *cb_arg);
 178 void evsel__output_resort(struct evsel *evsel, struct ui_progress *prog);
 179 void hists__output_resort(struct hists *hists, struct ui_progress *prog);
 180 void hists__output_resort_cb(struct hists *hists, struct ui_progress *prog,
 181                              hists__resort_cb_t cb);
 182 int hists__collapse_resort(struct hists *hists, struct ui_progress *prog);
 183
 184 void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel);
 185 void hists__delete_entries(struct hists *hists);
 186 void hists__output_recalc_col_len(struct hists *hists, int max_rows);
 187
 188 struct hist_entry *hists__get_entry(struct hists *hists, int idx);
 189
 190 u64 hists__total_period(struct hists *hists);
 191 void hists__reset_stats(struct hists *hists);
 192 void hists__inc_stats(struct hists *hists, struct hist_entry *h);
 193 void hists__inc_nr_events(struct hists *hists, u32 type);
 194 void hists__inc_nr_samples(struct hists *hists, bool filtered);
 195
 196 size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
 197                       int max_cols, float min_pcnt, FILE *fp,
 198                       bool ignore_callchains);
 199 size_t perf_evlist__fprintf_nr_events(struct evlist *evlist, FILE *fp);
 200
 201 void hists__filter_by_dso(struct hists *hists);
 202 void hists__filter_by_thread(struct hists *hists);
 203 void hists__filter_by_symbol(struct hists *hists);
 204 void hists__filter_by_socket(struct hists *hists);
 205
 206 static inline bool hists__has_filter(struct hists *hists)
 207 {
 208         return hists->thread_filter || hists->dso_filter ||
 209                 hists->symbol_filter_str || (hists->socket_filter > -1);
 210 }
 211
 212 u16 hists__col_len(struct hists *hists, enum hist_column col);
 213 void hists__set_col_len(struct hists *hists, enum hist_column col, u16 len);
 214 bool hists__new_col_len(struct hists *hists, enum hist_column col, u16 len);
 215 void hists__reset_col_len(struct hists *hists);
 216 void hists__calc_col_len(struct hists *hists, struct hist_entry *he);
 217
 218 void hists__match(struct hists *leader, struct hists *other);
 219 int hists__link(struct hists *leader, struct hists *other);
 220 int hists__unlink(struct hists *hists);
 221
 222 struct hists_evsel {
 223         struct evsel evsel;
 224         struct hists      hists;
 225 };
 226
 227 static inline struct evsel *hists_to_evsel(struct hists *hists)
 228 {
 229         struct hists_evsel *hevsel = container_of(hists, struct hists_evsel, hists);
 230         return &hevsel->evsel;
 231 }
 232
 233 static inline struct hists *evsel__hists(struct evsel *evsel)
 234 {
 235         struct hists_evsel *hevsel = (struct hists_evsel *)evsel;
 236         return &hevsel->hists;
 237 }
 238
 239 static __pure inline bool hists__has_callchains(struct hists *hists)
 240 {
 241         return hists->has_callchains;
 242 }
 243
 244 int hists__init(void);
 245 int __hists__init(struct hists *hists, struct perf_hpp_list *hpp_list);
 246
 247 struct rb_root_cached *hists__get_rotate_entries_in(struct hists *hists);
 248
 249 struct perf_hpp {
 250         char *buf;
 251         size_t size;
 252         const char *sep;
 253         void *ptr;
 254         bool skip;
 255 };
 256
 257 struct perf_hpp_fmt {
 258         const char *name;
 259         int (*header)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 260                       struct hists *hists, int line, int *span);
 261         int (*width)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 262                      struct hists *hists);
 263         int (*color)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 264                      struct hist_entry *he);
 265         int (*entry)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 266                      struct hist_entry *he);
 267         int64_t (*cmp)(struct perf_hpp_fmt *fmt,
 268                        struct hist_entry *a, struct hist_entry *b);
 269         int64_t (*collapse)(struct perf_hpp_fmt *fmt,
 270                             struct hist_entry *a, struct hist_entry *b);
 271         int64_t (*sort)(struct perf_hpp_fmt *fmt,
 272                         struct hist_entry *a, struct hist_entry *b);
 273         bool (*equal)(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b);
 274         void (*free)(struct perf_hpp_fmt *fmt);
 275
 276         struct list_head list;
 277         struct list_head sort_list;
 278         bool elide;
 279         int len;
 280         int user_len;
 281         int idx;
 282         int level;
 283 };
 284
 285 struct perf_hpp_list {
 286         struct list_head fields;
 287         struct list_head sorts;
 288
 289         int nr_header_lines;
 290         int need_collapse;
 291         int parent;
 292         int sym;
 293         int dso;
 294         int socket;
 295         int thread;
 296         int comm;
 297 };
 298
 299 extern struct perf_hpp_list perf_hpp_list;
 300
 301 struct perf_hpp_list_node {
 302         struct list_head        list;
 303         struct perf_hpp_list    hpp;
 304         int                     level;
 305         bool                    skip;
 306 };
 307
 308 void perf_hpp_list__column_register(struct perf_hpp_list *list,
 309                                     struct perf_hpp_fmt *format);
 310 void perf_hpp_list__register_sort_field(struct perf_hpp_list *list,
 311                                         struct perf_hpp_fmt *format);
 312 void perf_hpp_list__prepend_sort_field(struct perf_hpp_list *list,
 313                                        struct perf_hpp_fmt *format);
 314
 315 static inline void perf_hpp__column_register(struct perf_hpp_fmt *format)
 316 {
 317         perf_hpp_list__column_register(&perf_hpp_list, format);
 318 }
 319
 320 static inline void perf_hpp__register_sort_field(struct perf_hpp_fmt *format)
 321 {
 322         perf_hpp_list__register_sort_field(&perf_hpp_list, format);
 323 }
 324
 325 static inline void perf_hpp__prepend_sort_field(struct perf_hpp_fmt *format)
 326 {
 327         perf_hpp_list__prepend_sort_field(&perf_hpp_list, format);
 328 }
 329
 330 #define perf_hpp_list__for_each_format(_list, format) \
 331         list_for_each_entry(format, &(_list)->fields, list)
 332
 333 #define perf_hpp_list__for_each_format_safe(_list, format, tmp) \
 334         list_for_each_entry_safe(format, tmp, &(_list)->fields, list)
 335
 336 #define perf_hpp_list__for_each_sort_list(_list, format) \
 337         list_for_each_entry(format, &(_list)->sorts, sort_list)
 338
 339 #define perf_hpp_list__for_each_sort_list_safe(_list, format, tmp)      \
 340         list_for_each_entry_safe(format, tmp, &(_list)->sorts, sort_list)
 341
 342 #define hists__for_each_format(hists, format) \
 343         perf_hpp_list__for_each_format((hists)->hpp_list, format)
 344
 345 #define hists__for_each_sort_list(hists, format) \
 346         perf_hpp_list__for_each_sort_list((hists)->hpp_list, format)
 347
 348 extern struct perf_hpp_fmt perf_hpp__format[];
 349
 350 enum {
 351         /* Matches perf_hpp__format array. */
 352         PERF_HPP__OVERHEAD,
 353         PERF_HPP__OVERHEAD_SYS,
 354         PERF_HPP__OVERHEAD_US,
 355         PERF_HPP__OVERHEAD_GUEST_SYS,
 356         PERF_HPP__OVERHEAD_GUEST_US,
 357         PERF_HPP__OVERHEAD_ACC,
 358         PERF_HPP__SAMPLES,
 359         PERF_HPP__PERIOD,
 360
 361         PERF_HPP__MAX_INDEX
 362 };
 363
 364 void perf_hpp__init(void);
 365 void perf_hpp__column_unregister(struct perf_hpp_fmt *format);
 366 void perf_hpp__cancel_cumulate(void);
 367 void perf_hpp__setup_output_field(struct perf_hpp_list *list);
 368 void perf_hpp__reset_output_field(struct perf_hpp_list *list);
 369 void perf_hpp__append_sort_keys(struct perf_hpp_list *list);
 370 int perf_hpp__setup_hists_formats(struct perf_hpp_list *list,
 371                                   struct evlist *evlist);
 372
 373
 374 bool perf_hpp__is_sort_entry(struct perf_hpp_fmt *format);
 375 bool perf_hpp__is_dynamic_entry(struct perf_hpp_fmt *format);
 376 bool perf_hpp__defined_dynamic_entry(struct perf_hpp_fmt *fmt, struct hists *hists);
 377 bool perf_hpp__is_trace_entry(struct perf_hpp_fmt *fmt);
 378 bool perf_hpp__is_srcline_entry(struct perf_hpp_fmt *fmt);
 379 bool perf_hpp__is_srcfile_entry(struct perf_hpp_fmt *fmt);
 380 bool perf_hpp__is_thread_entry(struct perf_hpp_fmt *fmt);
 381 bool perf_hpp__is_comm_entry(struct perf_hpp_fmt *fmt);
 382 bool perf_hpp__is_dso_entry(struct perf_hpp_fmt *fmt);
 383 bool perf_hpp__is_sym_entry(struct perf_hpp_fmt *fmt);
 384
 385 struct perf_hpp_fmt *perf_hpp_fmt__dup(struct perf_hpp_fmt *fmt);
 386
 387 int hist_entry__filter(struct hist_entry *he, int type, const void *arg);
 388
 389 static inline bool perf_hpp__should_skip(struct perf_hpp_fmt *format,
 390                                          struct hists *hists)
 391 {
 392         if (format->elide)
 393                 return true;
 394
 395         if (perf_hpp__is_dynamic_entry(format) &&
 396             !perf_hpp__defined_dynamic_entry(format, hists))
 397                 return true;
 398
 399         return false;
 400 }
 401
 402 void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists);
 403 void perf_hpp__reset_sort_width(struct perf_hpp_fmt *fmt, struct hists *hists);
 404 void perf_hpp__set_user_width(const char *width_list_str);
 405 void hists__reset_column_width(struct hists *hists);
 406
 407 typedef u64 (*hpp_field_fn)(struct hist_entry *he);
 408 typedef int (*hpp_callback_fn)(struct perf_hpp *hpp, bool front);
 409 typedef int (*hpp_snprint_fn)(struct perf_hpp *hpp, const char *fmt, ...);
 410
 411 int hpp__fmt(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 412              struct hist_entry *he, hpp_field_fn get_field,
 413              const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent);
 414 int hpp__fmt_acc(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 415                  struct hist_entry *he, hpp_field_fn get_field,
 416                  const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent);
 417
 418 static inline void advance_hpp(struct perf_hpp *hpp, int inc)
 419 {
 420         hpp->buf  += inc;
 421         hpp->size -= inc;
 422 }
 423
 424 static inline size_t perf_hpp__use_color(void)
 425 {
 426         return !symbol_conf.field_sep;
 427 }
 428
 429 static inline size_t perf_hpp__color_overhead(void)
 430 {
 431         return perf_hpp__use_color() ?
 432                (COLOR_MAXLEN + sizeof(PERF_COLOR_RESET)) * PERF_HPP__MAX_INDEX
 433                : 0;
 434 }
 435
 436 struct evlist;
 437
 438 struct hist_browser_timer {
 439         void (*timer)(void *arg);
 440         void *arg;
 441         int refresh;
 442 };
 443
 444 struct annotation_options;
 445 struct res_sample;
 446
 447 enum rstype {
 448         A_NORMAL,
 449         A_ASM,
 450         A_SOURCE
 451 };
 452
 453 struct block_hist;
 454
 455 #ifdef HAVE_SLANG_SUPPORT
 456 #include "../ui/keysyms.h"
 457 void attr_to_script(char *buf, struct perf_event_attr *attr);
 458
 459 int map_symbol__tui_annotate(struct map_symbol *ms, struct evsel *evsel,
 460                              struct hist_browser_timer *hbt,
 461                              struct annotation_options *annotation_opts);
 462
 463 int hist_entry__tui_annotate(struct hist_entry *he, struct evsel *evsel,
 464                              struct hist_browser_timer *hbt,
 465                              struct annotation_options *annotation_opts);
 466
 467 int perf_evlist__tui_browse_hists(struct evlist *evlist, const char *help,
 468                                   struct hist_browser_timer *hbt,
 469                                   float min_pcnt,
 470                                   struct perf_env *env,
 471                                   bool warn_lost_event,
 472                                   struct annotation_options *annotation_options);
 473
 474 int script_browse(const char *script_opt, struct evsel *evsel);
 475
 476 void run_script(char *cmd);
 477 int res_sample_browse(struct res_sample *res_samples, int num_res,
 478                       struct evsel *evsel, enum rstype rstype);
 479 void res_sample_init(void);
 480
 481 int block_hists_tui_browse(struct block_hist *bh, struct evsel *evsel,
 482                            float min_percent, struct perf_env *env,
 483                            struct annotation_options *annotation_opts);
 484 #else
 485 static inline
 486 int perf_evlist__tui_browse_hists(struct evlist *evlist __maybe_unused,
 487                                   const char *help __maybe_unused,
 488                                   struct hist_browser_timer *hbt __maybe_unused,
 489                                   float min_pcnt __maybe_unused,
 490                                   struct perf_env *env __maybe_unused,
 491                                   bool warn_lost_event __maybe_unused,
 492                                   struct annotation_options *annotation_options __maybe_unused)
 493 {
 494         return 0;
 495 }
 496 static inline int map_symbol__tui_annotate(struct map_symbol *ms __maybe_unused,
 497                                            struct evsel *evsel __maybe_unused,
 498                                            struct hist_browser_timer *hbt __maybe_unused,
 499                                            struct annotation_options *annotation_options __maybe_unused)
 500 {
 501         return 0;
 502 }
 503
 504 static inline int hist_entry__tui_annotate(struct hist_entry *he __maybe_unused,
 505                                            struct evsel *evsel __maybe_unused,
 506                                            struct hist_browser_timer *hbt __maybe_unused,
 507                                            struct annotation_options *annotation_opts __maybe_unused)
 508 {
 509         return 0;
 510 }
 511
 512 static inline int script_browse(const char *script_opt __maybe_unused,
 513                                 struct evsel *evsel __maybe_unused)
 514 {
 515         return 0;
 516 }
 517
 518 static inline int res_sample_browse(struct res_sample *res_samples __maybe_unused,
 519                                     int num_res __maybe_unused,
 520                                     struct evsel *evsel __maybe_unused,
 521                                     enum rstype rstype __maybe_unused)
 522 {
 523         return 0;
 524 }
 525
 526 static inline void res_sample_init(void) {}
 527
 528 static inline int block_hists_tui_browse(struct block_hist *bh __maybe_unused,
 529                                          struct evsel *evsel __maybe_unused,
 530                                          float min_percent __maybe_unused,
 531                                          struct perf_env *env __maybe_unused,
 532                                          struct annotation_options *annotation_opts __maybe_unused)
 533 {
 534         return 0;
 535 }
 536
 537 #define K_LEFT  -1000
 538 #define K_RIGHT -2000
 539 #define K_SWITCH_INPUT_DATA -3000
 540 #define K_RELOAD -4000
 541 #endif
 542
 543 unsigned int hists__sort_list_width(struct hists *hists);
 544 unsigned int hists__overhead_width(struct hists *hists);
 545
 546 void hist__account_cycles(struct branch_stack *bs, struct addr_location *al,
 547                           struct perf_sample *sample, bool nonany_branch_mode,
 548                           u64 *total_cycles);
 549
 550 struct option;
 551 int parse_filter_percentage(const struct option *opt, const char *arg, int unset);
 552 int perf_hist_config(const char *var, const char *value);
 553
 554 void perf_hpp_list__init(struct perf_hpp_list *list);
 555
 556 enum hierarchy_move_dir {
 557         HMD_NORMAL,
 558         HMD_FORCE_SIBLING,
 559         HMD_FORCE_CHILD,
 560 };
 561
 562 struct rb_node *rb_hierarchy_last(struct rb_node *node);
 563 struct rb_node *__rb_hierarchy_next(struct rb_node *node,
 564                                     enum hierarchy_move_dir hmd);
 565 struct rb_node *rb_hierarchy_prev(struct rb_node *node);
 566
 567 static inline struct rb_node *rb_hierarchy_next(struct rb_node *node)
 568 {
 569         return __rb_hierarchy_next(node, HMD_NORMAL);
 570 }
 571
 572 #define HIERARCHY_INDENT  3
 573
 574 bool hist_entry__has_hierarchy_children(struct hist_entry *he, float limit);
 575 int hpp_color_scnprintf(struct perf_hpp *hpp, const char *fmt, ...);
 576 int __hpp__slsmg_color_printf(struct perf_hpp *hpp, const char *fmt, ...);
 577 int __hist_entry__snprintf(struct hist_entry *he, struct perf_hpp *hpp,
 578                            struct perf_hpp_list *hpp_list);
 579 int hists__fprintf_headers(struct hists *hists, FILE *fp);
 580 int __hists__scnprintf_title(struct hists *hists, char *bf, size_t size, bool show_freq);
 581
 582 static inline int hists__scnprintf_title(struct hists *hists, char *bf, size_t size)
 583 {
 584         return __hists__scnprintf_title(hists, bf, size, true);
 585 }
 586
 587 #endif  /* __PERF_HIST_H */