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_CODE_PAGE_SIZE,
  57         HISTC_MEM_DADDR_SYMBOL,
  58         HISTC_MEM_DADDR_DSO,
  59         HISTC_MEM_PHYS_DADDR,
  60         HISTC_MEM_DATA_PAGE_SIZE,
  61         HISTC_MEM_LOCKED,
  62         HISTC_MEM_TLB,
  63         HISTC_MEM_LVL,
  64         HISTC_MEM_SNOOP,
  65         HISTC_MEM_DCACHELINE,
  66         HISTC_MEM_IADDR_SYMBOL,
  67         HISTC_TRANSACTION,
  68         HISTC_CYCLES,
  69         HISTC_SRCLINE_FROM,
  70         HISTC_SRCLINE_TO,
  71         HISTC_TRACE,
  72         HISTC_SYM_SIZE,
  73         HISTC_DSO_SIZE,
  74         HISTC_SYMBOL_IPC,
  75         HISTC_MEM_BLOCKED,
  76         HISTC_LOCAL_INS_LAT,
  77         HISTC_GLOBAL_INS_LAT,
  78         HISTC_NR_COLS, /* Last entry */
  79 };
  80
  81 struct thread;
  82 struct dso;
  83
  84 struct hists {
  85         struct rb_root_cached   entries_in_array[2];
  86         struct rb_root_cached   *entries_in;
  87         struct rb_root_cached   entries;
  88         struct rb_root_cached   entries_collapsed;
  89         u64                     nr_entries;
  90         u64                     nr_non_filtered_entries;
  91         u64                     callchain_period;
  92         u64                     callchain_non_filtered_period;
  93         struct thread           *thread_filter;
  94         const struct dso        *dso_filter;
  95         const char              *uid_filter_str;
  96         const char              *symbol_filter_str;
  97         pthread_mutex_t         lock;
  98         struct events_stats     stats;
  99         u64                     event_stream;
 100         u16                     col_len[HISTC_NR_COLS];
 101         bool                    has_callchains;
 102         int                     socket_filter;
 103         struct perf_hpp_list    *hpp_list;
 104         struct list_head        hpp_formats;
 105         int                     nr_hpp_node;
 106 };
 107
 108 #define hists__has(__h, __f) (__h)->hpp_list->__f
 109
 110 struct hist_entry_iter;
 111
 112 struct hist_iter_ops {
 113         int (*prepare_entry)(struct hist_entry_iter *, struct addr_location *);
 114         int (*add_single_entry)(struct hist_entry_iter *, struct addr_location *);
 115         int (*next_entry)(struct hist_entry_iter *, struct addr_location *);
 116         int (*add_next_entry)(struct hist_entry_iter *, struct addr_location *);
 117         int (*finish_entry)(struct hist_entry_iter *, struct addr_location *);
 118 };
 119
 120 struct hist_entry_iter {
 121         int total;
 122         int curr;
 123
 124         bool hide_unresolved;
 125
 126         struct evsel *evsel;
 127         struct perf_sample *sample;
 128         struct hist_entry *he;
 129         struct symbol *parent;
 130         void *priv;
 131
 132         const struct hist_iter_ops *ops;
 133         /* user-defined callback function (optional) */
 134         int (*add_entry_cb)(struct hist_entry_iter *iter,
 135                             struct addr_location *al, bool single, void *arg);
 136 };
 137
 138 extern const struct hist_iter_ops hist_iter_normal;
 139 extern const struct hist_iter_ops hist_iter_branch;
 140 extern const struct hist_iter_ops hist_iter_mem;
 141 extern const struct hist_iter_ops hist_iter_cumulative;
 142
 143 struct hist_entry *hists__add_entry(struct hists *hists,
 144                                     struct addr_location *al,
 145                                     struct symbol *parent,
 146                                     struct branch_info *bi,
 147                                     struct mem_info *mi,
 148                                     struct perf_sample *sample,
 149                                     bool sample_self);
 150
 151 struct hist_entry *hists__add_entry_ops(struct hists *hists,
 152                                         struct hist_entry_ops *ops,
 153                                         struct addr_location *al,
 154                                         struct symbol *sym_parent,
 155                                         struct branch_info *bi,
 156                                         struct mem_info *mi,
 157                                         struct perf_sample *sample,
 158                                         bool sample_self);
 159
 160 struct hist_entry *hists__add_entry_block(struct hists *hists,
 161                                           struct addr_location *al,
 162                                           struct block_info *bi);
 163
 164 int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al,
 165                          int max_stack_depth, void *arg);
 166
 167 struct perf_hpp;
 168 struct perf_hpp_fmt;
 169
 170 int64_t hist_entry__cmp(struct hist_entry *left, struct hist_entry *right);
 171 int64_t hist_entry__collapse(struct hist_entry *left, struct hist_entry *right);
 172 int hist_entry__transaction_len(void);
 173 int hist_entry__sort_snprintf(struct hist_entry *he, char *bf, size_t size,
 174                               struct hists *hists);
 175 int hist_entry__snprintf_alignment(struct hist_entry *he, struct perf_hpp *hpp,
 176                                    struct perf_hpp_fmt *fmt, int printed);
 177 void hist_entry__delete(struct hist_entry *he);
 178
 179 typedef int (*hists__resort_cb_t)(struct hist_entry *he, void *arg);
 180
 181 void evsel__output_resort_cb(struct evsel *evsel, struct ui_progress *prog,
 182                              hists__resort_cb_t cb, void *cb_arg);
 183 void evsel__output_resort(struct evsel *evsel, struct ui_progress *prog);
 184 void hists__output_resort(struct hists *hists, struct ui_progress *prog);
 185 void hists__output_resort_cb(struct hists *hists, struct ui_progress *prog,
 186                              hists__resort_cb_t cb);
 187 int hists__collapse_resort(struct hists *hists, struct ui_progress *prog);
 188
 189 void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel);
 190 void hists__delete_entries(struct hists *hists);
 191 void hists__output_recalc_col_len(struct hists *hists, int max_rows);
 192
 193 struct hist_entry *hists__get_entry(struct hists *hists, int idx);
 194
 195 u64 hists__total_period(struct hists *hists);
 196 void hists__reset_stats(struct hists *hists);
 197 void hists__inc_stats(struct hists *hists, struct hist_entry *h);
 198 void hists__inc_nr_events(struct hists *hists, u32 type);
 199 void hists__inc_nr_samples(struct hists *hists, bool filtered);
 200
 201 size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
 202                       int max_cols, float min_pcnt, FILE *fp,
 203                       bool ignore_callchains);
 204 size_t evlist__fprintf_nr_events(struct evlist *evlist, FILE *fp);
 205
 206 void hists__filter_by_dso(struct hists *hists);
 207 void hists__filter_by_thread(struct hists *hists);
 208 void hists__filter_by_symbol(struct hists *hists);
 209 void hists__filter_by_socket(struct hists *hists);
 210
 211 static inline bool hists__has_filter(struct hists *hists)
 212 {
 213         return hists->thread_filter || hists->dso_filter ||
 214                 hists->symbol_filter_str || (hists->socket_filter > -1);
 215 }
 216
 217 u16 hists__col_len(struct hists *hists, enum hist_column col);
 218 void hists__set_col_len(struct hists *hists, enum hist_column col, u16 len);
 219 bool hists__new_col_len(struct hists *hists, enum hist_column col, u16 len);
 220 void hists__reset_col_len(struct hists *hists);
 221 void hists__calc_col_len(struct hists *hists, struct hist_entry *he);
 222
 223 void hists__match(struct hists *leader, struct hists *other);
 224 int hists__link(struct hists *leader, struct hists *other);
 225 int hists__unlink(struct hists *hists);
 226
 227 struct hists_evsel {
 228         struct evsel evsel;
 229         struct hists      hists;
 230 };
 231
 232 static inline struct evsel *hists_to_evsel(struct hists *hists)
 233 {
 234         struct hists_evsel *hevsel = container_of(hists, struct hists_evsel, hists);
 235         return &hevsel->evsel;
 236 }
 237
 238 static inline struct hists *evsel__hists(struct evsel *evsel)
 239 {
 240         struct hists_evsel *hevsel = (struct hists_evsel *)evsel;
 241         return &hevsel->hists;
 242 }
 243
 244 static __pure inline bool hists__has_callchains(struct hists *hists)
 245 {
 246         return hists->has_callchains;
 247 }
 248
 249 int hists__init(void);
 250 int __hists__init(struct hists *hists, struct perf_hpp_list *hpp_list);
 251
 252 struct rb_root_cached *hists__get_rotate_entries_in(struct hists *hists);
 253
 254 struct perf_hpp {
 255         char *buf;
 256         size_t size;
 257         const char *sep;
 258         void *ptr;
 259         bool skip;
 260 };
 261
 262 struct perf_hpp_fmt {
 263         const char *name;
 264         int (*header)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 265                       struct hists *hists, int line, int *span);
 266         int (*width)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 267                      struct hists *hists);
 268         int (*color)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 269                      struct hist_entry *he);
 270         int (*entry)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 271                      struct hist_entry *he);
 272         int64_t (*cmp)(struct perf_hpp_fmt *fmt,
 273                        struct hist_entry *a, struct hist_entry *b);
 274         int64_t (*collapse)(struct perf_hpp_fmt *fmt,
 275                             struct hist_entry *a, struct hist_entry *b);
 276         int64_t (*sort)(struct perf_hpp_fmt *fmt,
 277                         struct hist_entry *a, struct hist_entry *b);
 278         bool (*equal)(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b);
 279         void (*free)(struct perf_hpp_fmt *fmt);
 280
 281         struct list_head list;
 282         struct list_head sort_list;
 283         bool elide;
 284         int len;
 285         int user_len;
 286         int idx;
 287         int level;
 288 };
 289
 290 struct perf_hpp_list {
 291         struct list_head fields;
 292         struct list_head sorts;
 293
 294         int nr_header_lines;
 295         int need_collapse;
 296         int parent;
 297         int sym;
 298         int dso;
 299         int socket;
 300         int thread;
 301         int comm;
 302 };
 303
 304 extern struct perf_hpp_list perf_hpp_list;
 305
 306 struct perf_hpp_list_node {
 307         struct list_head        list;
 308         struct perf_hpp_list    hpp;
 309         int                     level;
 310         bool                    skip;
 311 };
 312
 313 void perf_hpp_list__column_register(struct perf_hpp_list *list,
 314                                     struct perf_hpp_fmt *format);
 315 void perf_hpp_list__register_sort_field(struct perf_hpp_list *list,
 316                                         struct perf_hpp_fmt *format);
 317 void perf_hpp_list__prepend_sort_field(struct perf_hpp_list *list,
 318                                        struct perf_hpp_fmt *format);
 319
 320 static inline void perf_hpp__column_register(struct perf_hpp_fmt *format)
 321 {
 322         perf_hpp_list__column_register(&perf_hpp_list, format);
 323 }
 324
 325 static inline void perf_hpp__register_sort_field(struct perf_hpp_fmt *format)
 326 {
 327         perf_hpp_list__register_sort_field(&perf_hpp_list, format);
 328 }
 329
 330 static inline void perf_hpp__prepend_sort_field(struct perf_hpp_fmt *format)
 331 {
 332         perf_hpp_list__prepend_sort_field(&perf_hpp_list, format);
 333 }
 334
 335 #define perf_hpp_list__for_each_format(_list, format) \
 336         list_for_each_entry(format, &(_list)->fields, list)
 337
 338 #define perf_hpp_list__for_each_format_safe(_list, format, tmp) \
 339         list_for_each_entry_safe(format, tmp, &(_list)->fields, list)
 340
 341 #define perf_hpp_list__for_each_sort_list(_list, format) \
 342         list_for_each_entry(format, &(_list)->sorts, sort_list)
 343
 344 #define perf_hpp_list__for_each_sort_list_safe(_list, format, tmp)      \
 345         list_for_each_entry_safe(format, tmp, &(_list)->sorts, sort_list)
 346
 347 #define hists__for_each_format(hists, format) \
 348         perf_hpp_list__for_each_format((hists)->hpp_list, format)
 349
 350 #define hists__for_each_sort_list(hists, format) \
 351         perf_hpp_list__for_each_sort_list((hists)->hpp_list, format)
 352
 353 extern struct perf_hpp_fmt perf_hpp__format[];
 354
 355 enum {
 356         /* Matches perf_hpp__format array. */
 357         PERF_HPP__OVERHEAD,
 358         PERF_HPP__OVERHEAD_SYS,
 359         PERF_HPP__OVERHEAD_US,
 360         PERF_HPP__OVERHEAD_GUEST_SYS,
 361         PERF_HPP__OVERHEAD_GUEST_US,
 362         PERF_HPP__OVERHEAD_ACC,
 363         PERF_HPP__SAMPLES,
 364         PERF_HPP__PERIOD,
 365
 366         PERF_HPP__MAX_INDEX
 367 };
 368
 369 void perf_hpp__init(void);
 370 void perf_hpp__column_unregister(struct perf_hpp_fmt *format);
 371 void perf_hpp__cancel_cumulate(void);
 372 void perf_hpp__setup_output_field(struct perf_hpp_list *list);
 373 void perf_hpp__reset_output_field(struct perf_hpp_list *list);
 374 void perf_hpp__append_sort_keys(struct perf_hpp_list *list);
 375 int perf_hpp__setup_hists_formats(struct perf_hpp_list *list,
 376                                   struct evlist *evlist);
 377
 378
 379 bool perf_hpp__is_sort_entry(struct perf_hpp_fmt *format);
 380 bool perf_hpp__is_dynamic_entry(struct perf_hpp_fmt *format);
 381 bool perf_hpp__defined_dynamic_entry(struct perf_hpp_fmt *fmt, struct hists *hists);
 382 bool perf_hpp__is_trace_entry(struct perf_hpp_fmt *fmt);
 383 bool perf_hpp__is_srcline_entry(struct perf_hpp_fmt *fmt);
 384 bool perf_hpp__is_srcfile_entry(struct perf_hpp_fmt *fmt);
 385 bool perf_hpp__is_thread_entry(struct perf_hpp_fmt *fmt);
 386 bool perf_hpp__is_comm_entry(struct perf_hpp_fmt *fmt);
 387 bool perf_hpp__is_dso_entry(struct perf_hpp_fmt *fmt);
 388 bool perf_hpp__is_sym_entry(struct perf_hpp_fmt *fmt);
 389
 390 struct perf_hpp_fmt *perf_hpp_fmt__dup(struct perf_hpp_fmt *fmt);
 391
 392 int hist_entry__filter(struct hist_entry *he, int type, const void *arg);
 393
 394 static inline bool perf_hpp__should_skip(struct perf_hpp_fmt *format,
 395                                          struct hists *hists)
 396 {
 397         if (format->elide)
 398                 return true;
 399
 400         if (perf_hpp__is_dynamic_entry(format) &&
 401             !perf_hpp__defined_dynamic_entry(format, hists))
 402                 return true;
 403
 404         return false;
 405 }
 406
 407 void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists);
 408 void perf_hpp__reset_sort_width(struct perf_hpp_fmt *fmt, struct hists *hists);
 409 void perf_hpp__set_user_width(const char *width_list_str);
 410 void hists__reset_column_width(struct hists *hists);
 411
 412 typedef u64 (*hpp_field_fn)(struct hist_entry *he);
 413 typedef int (*hpp_callback_fn)(struct perf_hpp *hpp, bool front);
 414 typedef int (*hpp_snprint_fn)(struct perf_hpp *hpp, const char *fmt, ...);
 415
 416 int hpp__fmt(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 417              struct hist_entry *he, hpp_field_fn get_field,
 418              const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent);
 419 int hpp__fmt_acc(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 420                  struct hist_entry *he, hpp_field_fn get_field,
 421                  const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent);
 422
 423 static inline void advance_hpp(struct perf_hpp *hpp, int inc)
 424 {
 425         hpp->buf  += inc;
 426         hpp->size -= inc;
 427 }
 428
 429 static inline size_t perf_hpp__use_color(void)
 430 {
 431         return !symbol_conf.field_sep;
 432 }
 433
 434 static inline size_t perf_hpp__color_overhead(void)
 435 {
 436         return perf_hpp__use_color() ?
 437                (COLOR_MAXLEN + sizeof(PERF_COLOR_RESET)) * PERF_HPP__MAX_INDEX
 438                : 0;
 439 }
 440
 441 struct evlist;
 442
 443 struct hist_browser_timer {
 444         void (*timer)(void *arg);
 445         void *arg;
 446         int refresh;
 447 };
 448
 449 struct annotation_options;
 450 struct res_sample;
 451
 452 enum rstype {
 453         A_NORMAL,
 454         A_ASM,
 455         A_SOURCE
 456 };
 457
 458 struct block_hist;
 459
 460 #ifdef HAVE_SLANG_SUPPORT
 461 #include "../ui/keysyms.h"
 462 void attr_to_script(char *buf, struct perf_event_attr *attr);
 463
 464 int map_symbol__tui_annotate(struct map_symbol *ms, struct evsel *evsel,
 465                              struct hist_browser_timer *hbt,
 466                              struct annotation_options *annotation_opts);
 467
 468 int hist_entry__tui_annotate(struct hist_entry *he, struct evsel *evsel,
 469                              struct hist_browser_timer *hbt,
 470                              struct annotation_options *annotation_opts);
 471
 472 int evlist__tui_browse_hists(struct evlist *evlist, const char *help, struct hist_browser_timer *hbt,
 473                              float min_pcnt, struct perf_env *env, bool warn_lost_event,
 474                              struct annotation_options *annotation_options);
 475
 476 int script_browse(const char *script_opt, struct evsel *evsel);
 477
 478 void run_script(char *cmd);
 479 int res_sample_browse(struct res_sample *res_samples, int num_res,
 480                       struct evsel *evsel, enum rstype rstype);
 481 void res_sample_init(void);
 482
 483 int block_hists_tui_browse(struct block_hist *bh, struct evsel *evsel,
 484                            float min_percent, struct perf_env *env,
 485                            struct annotation_options *annotation_opts);
 486 #else
 487 static inline
 488 int evlist__tui_browse_hists(struct evlist *evlist __maybe_unused,
 489                              const char *help __maybe_unused,
 490                              struct hist_browser_timer *hbt __maybe_unused,
 491                              float min_pcnt __maybe_unused,
 492                              struct perf_env *env __maybe_unused,
 493                              bool warn_lost_event __maybe_unused,
 494                              struct annotation_options *annotation_options __maybe_unused)
 495 {
 496         return 0;
 497 }
 498 static inline int map_symbol__tui_annotate(struct map_symbol *ms __maybe_unused,
 499                                            struct evsel *evsel __maybe_unused,
 500                                            struct hist_browser_timer *hbt __maybe_unused,
 501                                            struct annotation_options *annotation_options __maybe_unused)
 502 {
 503         return 0;
 504 }
 505
 506 static inline int hist_entry__tui_annotate(struct hist_entry *he __maybe_unused,
 507                                            struct evsel *evsel __maybe_unused,
 508                                            struct hist_browser_timer *hbt __maybe_unused,
 509                                            struct annotation_options *annotation_opts __maybe_unused)
 510 {
 511         return 0;
 512 }
 513
 514 static inline int script_browse(const char *script_opt __maybe_unused,
 515                                 struct evsel *evsel __maybe_unused)
 516 {
 517         return 0;
 518 }
 519
 520 static inline int res_sample_browse(struct res_sample *res_samples __maybe_unused,
 521                                     int num_res __maybe_unused,
 522                                     struct evsel *evsel __maybe_unused,
 523                                     enum rstype rstype __maybe_unused)
 524 {
 525         return 0;
 526 }
 527
 528 static inline void res_sample_init(void) {}
 529
 530 static inline int block_hists_tui_browse(struct block_hist *bh __maybe_unused,
 531                                          struct evsel *evsel __maybe_unused,
 532                                          float min_percent __maybe_unused,
 533                                          struct perf_env *env __maybe_unused,
 534                                          struct annotation_options *annotation_opts __maybe_unused)
 535 {
 536         return 0;
 537 }
 538
 539 #define K_LEFT  -1000
 540 #define K_RIGHT -2000
 541 #define K_SWITCH_INPUT_DATA -3000
 542 #define K_RELOAD -4000
 543 #endif
 544
 545 unsigned int hists__sort_list_width(struct hists *hists);
 546 unsigned int hists__overhead_width(struct hists *hists);
 547
 548 void hist__account_cycles(struct branch_stack *bs, struct addr_location *al,
 549                           struct perf_sample *sample, bool nonany_branch_mode,
 550                           u64 *total_cycles);
 551
 552 struct option;
 553 int parse_filter_percentage(const struct option *opt, const char *arg, int unset);
 554 int perf_hist_config(const char *var, const char *value);
 555
 556 void perf_hpp_list__init(struct perf_hpp_list *list);
 557
 558 enum hierarchy_move_dir {
 559         HMD_NORMAL,
 560         HMD_FORCE_SIBLING,
 561         HMD_FORCE_CHILD,
 562 };
 563
 564 struct rb_node *rb_hierarchy_last(struct rb_node *node);
 565 struct rb_node *__rb_hierarchy_next(struct rb_node *node,
 566                                     enum hierarchy_move_dir hmd);
 567 struct rb_node *rb_hierarchy_prev(struct rb_node *node);
 568
 569 static inline struct rb_node *rb_hierarchy_next(struct rb_node *node)
 570 {
 571         return __rb_hierarchy_next(node, HMD_NORMAL);
 572 }
 573
 574 #define HIERARCHY_INDENT  3
 575
 576 bool hist_entry__has_hierarchy_children(struct hist_entry *he, float limit);
 577 int hpp_color_scnprintf(struct perf_hpp *hpp, const char *fmt, ...);
 578 int __hpp__slsmg_color_printf(struct perf_hpp *hpp, const char *fmt, ...);
 579 int __hist_entry__snprintf(struct hist_entry *he, struct perf_hpp *hpp,
 580                            struct perf_hpp_list *hpp_list);
 581 int hists__fprintf_headers(struct hists *hists, FILE *fp);
 582 int __hists__scnprintf_title(struct hists *hists, char *bf, size_t size, bool show_freq);
 583
 584 static inline int hists__scnprintf_title(struct hists *hists, char *bf, size_t size)
 585 {
 586         return __hists__scnprintf_title(hists, bf, size, true);
 587 }
 588
 589 #endif  /* __PERF_HIST_H */