xref: /openbmc/linux/tools/perf/util/hist.h (revision ea15483e)
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 "evsel.h"
8 #include "color.h"
9 #include "events_stats.h"
10 #include "mutex.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 kvm_info;
18 struct branch_info;
19 struct branch_stack;
20 struct block_info;
21 struct symbol;
22 struct ui_progress;
23 
24 enum hist_filter {
25 	HIST_FILTER__DSO,
26 	HIST_FILTER__THREAD,
27 	HIST_FILTER__PARENT,
28 	HIST_FILTER__SYMBOL,
29 	HIST_FILTER__GUEST,
30 	HIST_FILTER__HOST,
31 	HIST_FILTER__SOCKET,
32 	HIST_FILTER__C2C,
33 };
34 
35 enum hist_column {
36 	HISTC_SYMBOL,
37 	HISTC_TIME,
38 	HISTC_DSO,
39 	HISTC_THREAD,
40 	HISTC_COMM,
41 	HISTC_CGROUP_ID,
42 	HISTC_CGROUP,
43 	HISTC_PARENT,
44 	HISTC_CPU,
45 	HISTC_SOCKET,
46 	HISTC_SRCLINE,
47 	HISTC_SRCFILE,
48 	HISTC_MISPREDICT,
49 	HISTC_IN_TX,
50 	HISTC_ABORT,
51 	HISTC_SYMBOL_FROM,
52 	HISTC_SYMBOL_TO,
53 	HISTC_DSO_FROM,
54 	HISTC_DSO_TO,
55 	HISTC_LOCAL_WEIGHT,
56 	HISTC_GLOBAL_WEIGHT,
57 	HISTC_CODE_PAGE_SIZE,
58 	HISTC_MEM_DADDR_SYMBOL,
59 	HISTC_MEM_DADDR_DSO,
60 	HISTC_MEM_PHYS_DADDR,
61 	HISTC_MEM_DATA_PAGE_SIZE,
62 	HISTC_MEM_LOCKED,
63 	HISTC_MEM_TLB,
64 	HISTC_MEM_LVL,
65 	HISTC_MEM_SNOOP,
66 	HISTC_MEM_DCACHELINE,
67 	HISTC_MEM_IADDR_SYMBOL,
68 	HISTC_TRANSACTION,
69 	HISTC_CYCLES,
70 	HISTC_SRCLINE_FROM,
71 	HISTC_SRCLINE_TO,
72 	HISTC_TRACE,
73 	HISTC_SYM_SIZE,
74 	HISTC_DSO_SIZE,
75 	HISTC_SYMBOL_IPC,
76 	HISTC_MEM_BLOCKED,
77 	HISTC_LOCAL_INS_LAT,
78 	HISTC_GLOBAL_INS_LAT,
79 	HISTC_LOCAL_P_STAGE_CYC,
80 	HISTC_GLOBAL_P_STAGE_CYC,
81 	HISTC_ADDR_FROM,
82 	HISTC_ADDR_TO,
83 	HISTC_ADDR,
84 	HISTC_SIMD,
85 	HISTC_NR_COLS, /* Last entry */
86 };
87 
88 struct thread;
89 struct dso;
90 
91 struct hists {
92 	struct rb_root_cached	entries_in_array[2];
93 	struct rb_root_cached	*entries_in;
94 	struct rb_root_cached	entries;
95 	struct rb_root_cached	entries_collapsed;
96 	u64			nr_entries;
97 	u64			nr_non_filtered_entries;
98 	u64			callchain_period;
99 	u64			callchain_non_filtered_period;
100 	struct thread		*thread_filter;
101 	const struct dso	*dso_filter;
102 	const char		*uid_filter_str;
103 	const char		*symbol_filter_str;
104 	struct mutex		lock;
105 	struct hists_stats	stats;
106 	u64			event_stream;
107 	u16			col_len[HISTC_NR_COLS];
108 	bool			has_callchains;
109 	int			socket_filter;
110 	struct perf_hpp_list	*hpp_list;
111 	struct list_head	hpp_formats;
112 	int			nr_hpp_node;
113 };
114 
115 #define hists__has(__h, __f) (__h)->hpp_list->__f
116 
117 struct hist_entry_iter;
118 
119 struct hist_iter_ops {
120 	int (*prepare_entry)(struct hist_entry_iter *, struct addr_location *);
121 	int (*add_single_entry)(struct hist_entry_iter *, struct addr_location *);
122 	int (*next_entry)(struct hist_entry_iter *, struct addr_location *);
123 	int (*add_next_entry)(struct hist_entry_iter *, struct addr_location *);
124 	int (*finish_entry)(struct hist_entry_iter *, struct addr_location *);
125 };
126 
127 struct hist_entry_iter {
128 	int total;
129 	int curr;
130 
131 	bool hide_unresolved;
132 
133 	struct evsel *evsel;
134 	struct perf_sample *sample;
135 	struct hist_entry *he;
136 	struct symbol *parent;
137 	void *priv;
138 
139 	const struct hist_iter_ops *ops;
140 	/* user-defined callback function (optional) */
141 	int (*add_entry_cb)(struct hist_entry_iter *iter,
142 			    struct addr_location *al, bool single, void *arg);
143 };
144 
145 extern const struct hist_iter_ops hist_iter_normal;
146 extern const struct hist_iter_ops hist_iter_branch;
147 extern const struct hist_iter_ops hist_iter_mem;
148 extern const struct hist_iter_ops hist_iter_cumulative;
149 
150 struct hist_entry *hists__add_entry(struct hists *hists,
151 				    struct addr_location *al,
152 				    struct symbol *parent,
153 				    struct branch_info *bi,
154 				    struct mem_info *mi,
155 				    struct kvm_info *ki,
156 				    struct perf_sample *sample,
157 				    bool sample_self);
158 
159 struct hist_entry *hists__add_entry_ops(struct hists *hists,
160 					struct hist_entry_ops *ops,
161 					struct addr_location *al,
162 					struct symbol *sym_parent,
163 					struct branch_info *bi,
164 					struct mem_info *mi,
165 					struct kvm_info *ki,
166 					struct perf_sample *sample,
167 					bool sample_self);
168 
169 struct hist_entry *hists__add_entry_block(struct hists *hists,
170 					  struct addr_location *al,
171 					  struct block_info *bi);
172 
173 int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al,
174 			 int max_stack_depth, void *arg);
175 
176 struct perf_hpp;
177 struct perf_hpp_fmt;
178 
179 int64_t hist_entry__cmp(struct hist_entry *left, struct hist_entry *right);
180 int64_t hist_entry__collapse(struct hist_entry *left, struct hist_entry *right);
181 int hist_entry__transaction_len(void);
182 int hist_entry__sort_snprintf(struct hist_entry *he, char *bf, size_t size,
183 			      struct hists *hists);
184 int hist_entry__snprintf_alignment(struct hist_entry *he, struct perf_hpp *hpp,
185 				   struct perf_hpp_fmt *fmt, int printed);
186 void hist_entry__delete(struct hist_entry *he);
187 
188 typedef int (*hists__resort_cb_t)(struct hist_entry *he, void *arg);
189 
190 void evsel__output_resort_cb(struct evsel *evsel, struct ui_progress *prog,
191 			     hists__resort_cb_t cb, void *cb_arg);
192 void evsel__output_resort(struct evsel *evsel, struct ui_progress *prog);
193 void hists__output_resort(struct hists *hists, struct ui_progress *prog);
194 void hists__output_resort_cb(struct hists *hists, struct ui_progress *prog,
195 			     hists__resort_cb_t cb);
196 int hists__collapse_resort(struct hists *hists, struct ui_progress *prog);
197 
198 void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel);
199 void hists__delete_entries(struct hists *hists);
200 void hists__output_recalc_col_len(struct hists *hists, int max_rows);
201 
202 struct hist_entry *hists__get_entry(struct hists *hists, int idx);
203 
204 u64 hists__total_period(struct hists *hists);
205 void hists__reset_stats(struct hists *hists);
206 void hists__inc_stats(struct hists *hists, struct hist_entry *h);
207 void hists__inc_nr_events(struct hists *hists);
208 void hists__inc_nr_samples(struct hists *hists, bool filtered);
209 void hists__inc_nr_lost_samples(struct hists *hists, u32 lost);
210 
211 size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
212 		      int max_cols, float min_pcnt, FILE *fp,
213 		      bool ignore_callchains);
214 size_t evlist__fprintf_nr_events(struct evlist *evlist, FILE *fp,
215 				 bool skip_empty);
216 
217 void hists__filter_by_dso(struct hists *hists);
218 void hists__filter_by_thread(struct hists *hists);
219 void hists__filter_by_symbol(struct hists *hists);
220 void hists__filter_by_socket(struct hists *hists);
221 
222 static inline bool hists__has_filter(struct hists *hists)
223 {
224 	return hists->thread_filter || hists->dso_filter ||
225 		hists->symbol_filter_str || (hists->socket_filter > -1);
226 }
227 
228 u16 hists__col_len(struct hists *hists, enum hist_column col);
229 void hists__set_col_len(struct hists *hists, enum hist_column col, u16 len);
230 bool hists__new_col_len(struct hists *hists, enum hist_column col, u16 len);
231 void hists__reset_col_len(struct hists *hists);
232 void hists__calc_col_len(struct hists *hists, struct hist_entry *he);
233 
234 void hists__match(struct hists *leader, struct hists *other);
235 int hists__link(struct hists *leader, struct hists *other);
236 int hists__unlink(struct hists *hists);
237 
238 struct hists_evsel {
239 	struct evsel evsel;
240 	struct hists	  hists;
241 };
242 
243 static inline struct evsel *hists_to_evsel(struct hists *hists)
244 {
245 	struct hists_evsel *hevsel = container_of(hists, struct hists_evsel, hists);
246 	return &hevsel->evsel;
247 }
248 
249 static inline struct hists *evsel__hists(struct evsel *evsel)
250 {
251 	struct hists_evsel *hevsel = (struct hists_evsel *)evsel;
252 	return &hevsel->hists;
253 }
254 
255 static __pure inline bool hists__has_callchains(struct hists *hists)
256 {
257 	return hists->has_callchains;
258 }
259 
260 int hists__init(void);
261 int __hists__init(struct hists *hists, struct perf_hpp_list *hpp_list);
262 
263 struct rb_root_cached *hists__get_rotate_entries_in(struct hists *hists);
264 
265 struct perf_hpp {
266 	char *buf;
267 	size_t size;
268 	const char *sep;
269 	void *ptr;
270 	bool skip;
271 };
272 
273 struct perf_hpp_fmt {
274 	const char *name;
275 	int (*header)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
276 		      struct hists *hists, int line, int *span);
277 	int (*width)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
278 		     struct hists *hists);
279 	void (*init)(struct perf_hpp_fmt *fmt, struct hist_entry *he);
280 	int (*color)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
281 		     struct hist_entry *he);
282 	int (*entry)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
283 		     struct hist_entry *he);
284 	int64_t (*cmp)(struct perf_hpp_fmt *fmt,
285 		       struct hist_entry *a, struct hist_entry *b);
286 	int64_t (*collapse)(struct perf_hpp_fmt *fmt,
287 			    struct hist_entry *a, struct hist_entry *b);
288 	int64_t (*sort)(struct perf_hpp_fmt *fmt,
289 			struct hist_entry *a, struct hist_entry *b);
290 	bool (*equal)(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b);
291 	void (*free)(struct perf_hpp_fmt *fmt);
292 
293 	struct list_head list;
294 	struct list_head sort_list;
295 	bool elide;
296 	int len;
297 	int user_len;
298 	int idx;
299 	int level;
300 };
301 
302 struct perf_hpp_list {
303 	struct list_head fields;
304 	struct list_head sorts;
305 
306 	int nr_header_lines;
307 	int need_collapse;
308 	int parent;
309 	int sym;
310 	int dso;
311 	int socket;
312 	int thread;
313 	int comm;
314 };
315 
316 extern struct perf_hpp_list perf_hpp_list;
317 
318 struct perf_hpp_list_node {
319 	struct list_head	list;
320 	struct perf_hpp_list	hpp;
321 	int			level;
322 	bool			skip;
323 };
324 
325 void perf_hpp_list__column_register(struct perf_hpp_list *list,
326 				    struct perf_hpp_fmt *format);
327 void perf_hpp_list__register_sort_field(struct perf_hpp_list *list,
328 					struct perf_hpp_fmt *format);
329 void perf_hpp_list__prepend_sort_field(struct perf_hpp_list *list,
330 				       struct perf_hpp_fmt *format);
331 
332 static inline void perf_hpp__column_register(struct perf_hpp_fmt *format)
333 {
334 	perf_hpp_list__column_register(&perf_hpp_list, format);
335 }
336 
337 static inline void perf_hpp__register_sort_field(struct perf_hpp_fmt *format)
338 {
339 	perf_hpp_list__register_sort_field(&perf_hpp_list, format);
340 }
341 
342 static inline void perf_hpp__prepend_sort_field(struct perf_hpp_fmt *format)
343 {
344 	perf_hpp_list__prepend_sort_field(&perf_hpp_list, format);
345 }
346 
347 #define perf_hpp_list__for_each_format(_list, format) \
348 	list_for_each_entry(format, &(_list)->fields, list)
349 
350 #define perf_hpp_list__for_each_format_safe(_list, format, tmp)	\
351 	list_for_each_entry_safe(format, tmp, &(_list)->fields, list)
352 
353 #define perf_hpp_list__for_each_sort_list(_list, format) \
354 	list_for_each_entry(format, &(_list)->sorts, sort_list)
355 
356 #define perf_hpp_list__for_each_sort_list_safe(_list, format, tmp)	\
357 	list_for_each_entry_safe(format, tmp, &(_list)->sorts, sort_list)
358 
359 #define hists__for_each_format(hists, format) \
360 	perf_hpp_list__for_each_format((hists)->hpp_list, format)
361 
362 #define hists__for_each_sort_list(hists, format) \
363 	perf_hpp_list__for_each_sort_list((hists)->hpp_list, format)
364 
365 extern struct perf_hpp_fmt perf_hpp__format[];
366 
367 enum {
368 	/* Matches perf_hpp__format array. */
369 	PERF_HPP__OVERHEAD,
370 	PERF_HPP__OVERHEAD_SYS,
371 	PERF_HPP__OVERHEAD_US,
372 	PERF_HPP__OVERHEAD_GUEST_SYS,
373 	PERF_HPP__OVERHEAD_GUEST_US,
374 	PERF_HPP__OVERHEAD_ACC,
375 	PERF_HPP__SAMPLES,
376 	PERF_HPP__PERIOD,
377 
378 	PERF_HPP__MAX_INDEX
379 };
380 
381 void perf_hpp__init(void);
382 void perf_hpp__cancel_cumulate(void);
383 void perf_hpp__setup_output_field(struct perf_hpp_list *list);
384 void perf_hpp__reset_output_field(struct perf_hpp_list *list);
385 void perf_hpp__append_sort_keys(struct perf_hpp_list *list);
386 int perf_hpp__setup_hists_formats(struct perf_hpp_list *list,
387 				  struct evlist *evlist);
388 
389 
390 bool perf_hpp__is_sort_entry(struct perf_hpp_fmt *format);
391 bool perf_hpp__is_dynamic_entry(struct perf_hpp_fmt *format);
392 bool perf_hpp__defined_dynamic_entry(struct perf_hpp_fmt *fmt, struct hists *hists);
393 bool perf_hpp__is_trace_entry(struct perf_hpp_fmt *fmt);
394 bool perf_hpp__is_srcline_entry(struct perf_hpp_fmt *fmt);
395 bool perf_hpp__is_srcfile_entry(struct perf_hpp_fmt *fmt);
396 bool perf_hpp__is_thread_entry(struct perf_hpp_fmt *fmt);
397 bool perf_hpp__is_comm_entry(struct perf_hpp_fmt *fmt);
398 bool perf_hpp__is_dso_entry(struct perf_hpp_fmt *fmt);
399 bool perf_hpp__is_sym_entry(struct perf_hpp_fmt *fmt);
400 
401 struct perf_hpp_fmt *perf_hpp_fmt__dup(struct perf_hpp_fmt *fmt);
402 
403 int hist_entry__filter(struct hist_entry *he, int type, const void *arg);
404 
405 static inline bool perf_hpp__should_skip(struct perf_hpp_fmt *format,
406 					 struct hists *hists)
407 {
408 	if (format->elide)
409 		return true;
410 
411 	if (perf_hpp__is_dynamic_entry(format) &&
412 	    !perf_hpp__defined_dynamic_entry(format, hists))
413 		return true;
414 
415 	return false;
416 }
417 
418 void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists);
419 void perf_hpp__reset_sort_width(struct perf_hpp_fmt *fmt, struct hists *hists);
420 void perf_hpp__set_user_width(const char *width_list_str);
421 void hists__reset_column_width(struct hists *hists);
422 
423 typedef u64 (*hpp_field_fn)(struct hist_entry *he);
424 typedef int (*hpp_callback_fn)(struct perf_hpp *hpp, bool front);
425 typedef int (*hpp_snprint_fn)(struct perf_hpp *hpp, const char *fmt, ...);
426 
427 int hpp__fmt(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
428 	     struct hist_entry *he, hpp_field_fn get_field,
429 	     const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent);
430 int hpp__fmt_acc(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
431 		 struct hist_entry *he, hpp_field_fn get_field,
432 		 const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent);
433 
434 static inline void advance_hpp(struct perf_hpp *hpp, int inc)
435 {
436 	hpp->buf  += inc;
437 	hpp->size -= inc;
438 }
439 
440 static inline size_t perf_hpp__use_color(void)
441 {
442 	return !symbol_conf.field_sep;
443 }
444 
445 static inline size_t perf_hpp__color_overhead(void)
446 {
447 	return perf_hpp__use_color() ?
448 	       (COLOR_MAXLEN + sizeof(PERF_COLOR_RESET)) * PERF_HPP__MAX_INDEX
449 	       : 0;
450 }
451 
452 struct evlist;
453 
454 struct hist_browser_timer {
455 	void (*timer)(void *arg);
456 	void *arg;
457 	int refresh;
458 };
459 
460 struct annotation_options;
461 struct res_sample;
462 
463 enum rstype {
464 	A_NORMAL,
465 	A_ASM,
466 	A_SOURCE
467 };
468 
469 struct block_hist;
470 
471 #ifdef HAVE_SLANG_SUPPORT
472 #include "../ui/keysyms.h"
473 void attr_to_script(char *buf, struct perf_event_attr *attr);
474 
475 int map_symbol__tui_annotate(struct map_symbol *ms, struct evsel *evsel,
476 			     struct hist_browser_timer *hbt,
477 			     struct annotation_options *annotation_opts);
478 
479 int hist_entry__tui_annotate(struct hist_entry *he, struct evsel *evsel,
480 			     struct hist_browser_timer *hbt,
481 			     struct annotation_options *annotation_opts);
482 
483 int evlist__tui_browse_hists(struct evlist *evlist, const char *help, struct hist_browser_timer *hbt,
484 			     float min_pcnt, struct perf_env *env, bool warn_lost_event,
485 			     struct annotation_options *annotation_options);
486 
487 int script_browse(const char *script_opt, struct evsel *evsel);
488 
489 void run_script(char *cmd);
490 int res_sample_browse(struct res_sample *res_samples, int num_res,
491 		      struct evsel *evsel, enum rstype rstype);
492 void res_sample_init(void);
493 
494 int block_hists_tui_browse(struct block_hist *bh, struct evsel *evsel,
495 			   float min_percent, struct perf_env *env,
496 			   struct annotation_options *annotation_opts);
497 #else
498 static inline
499 int evlist__tui_browse_hists(struct evlist *evlist __maybe_unused,
500 			     const char *help __maybe_unused,
501 			     struct hist_browser_timer *hbt __maybe_unused,
502 			     float min_pcnt __maybe_unused,
503 			     struct perf_env *env __maybe_unused,
504 			     bool warn_lost_event __maybe_unused,
505 			     struct annotation_options *annotation_options __maybe_unused)
506 {
507 	return 0;
508 }
509 static inline int map_symbol__tui_annotate(struct map_symbol *ms __maybe_unused,
510 					   struct evsel *evsel __maybe_unused,
511 					   struct hist_browser_timer *hbt __maybe_unused,
512 					   struct annotation_options *annotation_options __maybe_unused)
513 {
514 	return 0;
515 }
516 
517 static inline int hist_entry__tui_annotate(struct hist_entry *he __maybe_unused,
518 					   struct evsel *evsel __maybe_unused,
519 					   struct hist_browser_timer *hbt __maybe_unused,
520 					   struct annotation_options *annotation_opts __maybe_unused)
521 {
522 	return 0;
523 }
524 
525 static inline int script_browse(const char *script_opt __maybe_unused,
526 				struct evsel *evsel __maybe_unused)
527 {
528 	return 0;
529 }
530 
531 static inline int res_sample_browse(struct res_sample *res_samples __maybe_unused,
532 				    int num_res __maybe_unused,
533 				    struct evsel *evsel __maybe_unused,
534 				    enum rstype rstype __maybe_unused)
535 {
536 	return 0;
537 }
538 
539 static inline void res_sample_init(void) {}
540 
541 static inline int block_hists_tui_browse(struct block_hist *bh __maybe_unused,
542 					 struct evsel *evsel __maybe_unused,
543 					 float min_percent __maybe_unused,
544 					 struct perf_env *env __maybe_unused,
545 					 struct annotation_options *annotation_opts __maybe_unused)
546 {
547 	return 0;
548 }
549 
550 #define K_LEFT  -1000
551 #define K_RIGHT -2000
552 #define K_SWITCH_INPUT_DATA -3000
553 #define K_RELOAD -4000
554 #endif
555 
556 unsigned int hists__sort_list_width(struct hists *hists);
557 unsigned int hists__overhead_width(struct hists *hists);
558 
559 void hist__account_cycles(struct branch_stack *bs, struct addr_location *al,
560 			  struct perf_sample *sample, bool nonany_branch_mode,
561 			  u64 *total_cycles);
562 
563 struct option;
564 int parse_filter_percentage(const struct option *opt, const char *arg, int unset);
565 int perf_hist_config(const char *var, const char *value);
566 
567 void perf_hpp_list__init(struct perf_hpp_list *list);
568 
569 enum hierarchy_move_dir {
570 	HMD_NORMAL,
571 	HMD_FORCE_SIBLING,
572 	HMD_FORCE_CHILD,
573 };
574 
575 struct rb_node *rb_hierarchy_last(struct rb_node *node);
576 struct rb_node *__rb_hierarchy_next(struct rb_node *node,
577 				    enum hierarchy_move_dir hmd);
578 struct rb_node *rb_hierarchy_prev(struct rb_node *node);
579 
580 static inline struct rb_node *rb_hierarchy_next(struct rb_node *node)
581 {
582 	return __rb_hierarchy_next(node, HMD_NORMAL);
583 }
584 
585 #define HIERARCHY_INDENT  3
586 
587 bool hist_entry__has_hierarchy_children(struct hist_entry *he, float limit);
588 int hpp_color_scnprintf(struct perf_hpp *hpp, const char *fmt, ...);
589 int __hpp__slsmg_color_printf(struct perf_hpp *hpp, const char *fmt, ...);
590 int __hist_entry__snprintf(struct hist_entry *he, struct perf_hpp *hpp,
591 			   struct perf_hpp_list *hpp_list);
592 int hists__fprintf_headers(struct hists *hists, FILE *fp);
593 int __hists__scnprintf_title(struct hists *hists, char *bf, size_t size, bool show_freq);
594 
595 static inline int hists__scnprintf_title(struct hists *hists, char *bf, size_t size)
596 {
597 	return __hists__scnprintf_title(hists, bf, size, true);
598 }
599 
600 #endif	/* __PERF_HIST_H */
601