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