xref: /openbmc/linux/tools/perf/ui/hist.c (revision 110e6f26) 
1 #include <math.h>
2 #include <linux/compiler.h>
3 
4 #include "../util/hist.h"
5 #include "../util/util.h"
6 #include "../util/sort.h"
7 #include "../util/evsel.h"
8 #include "../util/evlist.h"
9 
10 /* hist period print (hpp) functions */
11 
12 #define hpp__call_print_fn(hpp, fn, fmt, ...)			\
13 ({								\
14 	int __ret = fn(hpp, fmt, ##__VA_ARGS__);		\
15 	advance_hpp(hpp, __ret);				\
16 	__ret;							\
17 })
18 
19 static int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
20 		      hpp_field_fn get_field, const char *fmt, int len,
21 		      hpp_snprint_fn print_fn, bool fmt_percent)
22 {
23 	int ret;
24 	struct hists *hists = he->hists;
25 	struct perf_evsel *evsel = hists_to_evsel(hists);
26 	char *buf = hpp->buf;
27 	size_t size = hpp->size;
28 
29 	if (fmt_percent) {
30 		double percent = 0.0;
31 		u64 total = hists__total_period(hists);
32 
33 		if (total)
34 			percent = 100.0 * get_field(he) / total;
35 
36 		ret = hpp__call_print_fn(hpp, print_fn, fmt, len, percent);
37 	} else
38 		ret = hpp__call_print_fn(hpp, print_fn, fmt, len, get_field(he));
39 
40 	if (perf_evsel__is_group_event(evsel)) {
41 		int prev_idx, idx_delta;
42 		struct hist_entry *pair;
43 		int nr_members = evsel->nr_members;
44 
45 		prev_idx = perf_evsel__group_idx(evsel);
46 
47 		list_for_each_entry(pair, &he->pairs.head, pairs.node) {
48 			u64 period = get_field(pair);
49 			u64 total = hists__total_period(pair->hists);
50 
51 			if (!total)
52 				continue;
53 
54 			evsel = hists_to_evsel(pair->hists);
55 			idx_delta = perf_evsel__group_idx(evsel) - prev_idx - 1;
56 
57 			while (idx_delta--) {
58 				/*
59 				 * zero-fill group members in the middle which
60 				 * have no sample
61 				 */
62 				if (fmt_percent) {
63 					ret += hpp__call_print_fn(hpp, print_fn,
64 								  fmt, len, 0.0);
65 				} else {
66 					ret += hpp__call_print_fn(hpp, print_fn,
67 								  fmt, len, 0ULL);
68 				}
69 			}
70 
71 			if (fmt_percent) {
72 				ret += hpp__call_print_fn(hpp, print_fn, fmt, len,
73 							  100.0 * period / total);
74 			} else {
75 				ret += hpp__call_print_fn(hpp, print_fn, fmt,
76 							  len, period);
77 			}
78 
79 			prev_idx = perf_evsel__group_idx(evsel);
80 		}
81 
82 		idx_delta = nr_members - prev_idx - 1;
83 
84 		while (idx_delta--) {
85 			/*
86 			 * zero-fill group members at last which have no sample
87 			 */
88 			if (fmt_percent) {
89 				ret += hpp__call_print_fn(hpp, print_fn,
90 							  fmt, len, 0.0);
91 			} else {
92 				ret += hpp__call_print_fn(hpp, print_fn,
93 							  fmt, len, 0ULL);
94 			}
95 		}
96 	}
97 
98 	/*
99 	 * Restore original buf and size as it's where caller expects
100 	 * the result will be saved.
101 	 */
102 	hpp->buf = buf;
103 	hpp->size = size;
104 
105 	return ret;
106 }
107 
108 int hpp__fmt(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
109 	     struct hist_entry *he, hpp_field_fn get_field,
110 	     const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent)
111 {
112 	int len = fmt->user_len ?: fmt->len;
113 
114 	if (symbol_conf.field_sep) {
115 		return __hpp__fmt(hpp, he, get_field, fmtstr, 1,
116 				  print_fn, fmt_percent);
117 	}
118 
119 	if (fmt_percent)
120 		len -= 2; /* 2 for a space and a % sign */
121 	else
122 		len -= 1;
123 
124 	return  __hpp__fmt(hpp, he, get_field, fmtstr, len, print_fn, fmt_percent);
125 }
126 
127 int hpp__fmt_acc(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
128 		 struct hist_entry *he, hpp_field_fn get_field,
129 		 const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent)
130 {
131 	if (!symbol_conf.cumulate_callchain) {
132 		int len = fmt->user_len ?: fmt->len;
133 		return snprintf(hpp->buf, hpp->size, " %*s", len - 1, "N/A");
134 	}
135 
136 	return hpp__fmt(fmt, hpp, he, get_field, fmtstr, print_fn, fmt_percent);
137 }
138 
139 static int field_cmp(u64 field_a, u64 field_b)
140 {
141 	if (field_a > field_b)
142 		return 1;
143 	if (field_a < field_b)
144 		return -1;
145 	return 0;
146 }
147 
148 static int __hpp__sort(struct hist_entry *a, struct hist_entry *b,
149 		       hpp_field_fn get_field)
150 {
151 	s64 ret;
152 	int i, nr_members;
153 	struct perf_evsel *evsel;
154 	struct hist_entry *pair;
155 	u64 *fields_a, *fields_b;
156 
157 	ret = field_cmp(get_field(a), get_field(b));
158 	if (ret || !symbol_conf.event_group)
159 		return ret;
160 
161 	evsel = hists_to_evsel(a->hists);
162 	if (!perf_evsel__is_group_event(evsel))
163 		return ret;
164 
165 	nr_members = evsel->nr_members;
166 	fields_a = calloc(nr_members, sizeof(*fields_a));
167 	fields_b = calloc(nr_members, sizeof(*fields_b));
168 
169 	if (!fields_a || !fields_b)
170 		goto out;
171 
172 	list_for_each_entry(pair, &a->pairs.head, pairs.node) {
173 		evsel = hists_to_evsel(pair->hists);
174 		fields_a[perf_evsel__group_idx(evsel)] = get_field(pair);
175 	}
176 
177 	list_for_each_entry(pair, &b->pairs.head, pairs.node) {
178 		evsel = hists_to_evsel(pair->hists);
179 		fields_b[perf_evsel__group_idx(evsel)] = get_field(pair);
180 	}
181 
182 	for (i = 1; i < nr_members; i++) {
183 		ret = field_cmp(fields_a[i], fields_b[i]);
184 		if (ret)
185 			break;
186 	}
187 
188 out:
189 	free(fields_a);
190 	free(fields_b);
191 
192 	return ret;
193 }
194 
195 static int __hpp__sort_acc(struct hist_entry *a, struct hist_entry *b,
196 			   hpp_field_fn get_field)
197 {
198 	s64 ret = 0;
199 
200 	if (symbol_conf.cumulate_callchain) {
201 		/*
202 		 * Put caller above callee when they have equal period.
203 		 */
204 		ret = field_cmp(get_field(a), get_field(b));
205 		if (ret)
206 			return ret;
207 
208 		if (a->thread != b->thread || !symbol_conf.use_callchain)
209 			return 0;
210 
211 		ret = b->callchain->max_depth - a->callchain->max_depth;
212 	}
213 	return ret;
214 }
215 
216 static int hpp__width_fn(struct perf_hpp_fmt *fmt,
217 			 struct perf_hpp *hpp __maybe_unused,
218 			 struct perf_evsel *evsel)
219 {
220 	int len = fmt->user_len ?: fmt->len;
221 
222 	if (symbol_conf.event_group)
223 		len = max(len, evsel->nr_members * fmt->len);
224 
225 	if (len < (int)strlen(fmt->name))
226 		len = strlen(fmt->name);
227 
228 	return len;
229 }
230 
231 static int hpp__header_fn(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
232 			  struct perf_evsel *evsel)
233 {
234 	int len = hpp__width_fn(fmt, hpp, evsel);
235 	return scnprintf(hpp->buf, hpp->size, "%*s", len, fmt->name);
236 }
237 
238 static int hpp_color_scnprintf(struct perf_hpp *hpp, const char *fmt, ...)
239 {
240 	va_list args;
241 	ssize_t ssize = hpp->size;
242 	double percent;
243 	int ret, len;
244 
245 	va_start(args, fmt);
246 	len = va_arg(args, int);
247 	percent = va_arg(args, double);
248 	ret = percent_color_len_snprintf(hpp->buf, hpp->size, fmt, len, percent);
249 	va_end(args);
250 
251 	return (ret >= ssize) ? (ssize - 1) : ret;
252 }
253 
254 static int hpp_entry_scnprintf(struct perf_hpp *hpp, const char *fmt, ...)
255 {
256 	va_list args;
257 	ssize_t ssize = hpp->size;
258 	int ret;
259 
260 	va_start(args, fmt);
261 	ret = vsnprintf(hpp->buf, hpp->size, fmt, args);
262 	va_end(args);
263 
264 	return (ret >= ssize) ? (ssize - 1) : ret;
265 }
266 
267 #define __HPP_COLOR_PERCENT_FN(_type, _field)					\
268 static u64 he_get_##_field(struct hist_entry *he)				\
269 {										\
270 	return he->stat._field;							\
271 }										\
272 										\
273 static int hpp__color_##_type(struct perf_hpp_fmt *fmt,				\
274 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
275 {										\
276 	return hpp__fmt(fmt, hpp, he, he_get_##_field, " %*.2f%%",		\
277 			hpp_color_scnprintf, true);				\
278 }
279 
280 #define __HPP_ENTRY_PERCENT_FN(_type, _field)					\
281 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt,				\
282 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
283 {										\
284 	return hpp__fmt(fmt, hpp, he, he_get_##_field, " %*.2f%%",		\
285 			hpp_entry_scnprintf, true);				\
286 }
287 
288 #define __HPP_SORT_FN(_type, _field)						\
289 static int64_t hpp__sort_##_type(struct perf_hpp_fmt *fmt __maybe_unused, 	\
290 				 struct hist_entry *a, struct hist_entry *b) 	\
291 {										\
292 	return __hpp__sort(a, b, he_get_##_field);				\
293 }
294 
295 #define __HPP_COLOR_ACC_PERCENT_FN(_type, _field)				\
296 static u64 he_get_acc_##_field(struct hist_entry *he)				\
297 {										\
298 	return he->stat_acc->_field;						\
299 }										\
300 										\
301 static int hpp__color_##_type(struct perf_hpp_fmt *fmt,				\
302 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
303 {										\
304 	return hpp__fmt_acc(fmt, hpp, he, he_get_acc_##_field, " %*.2f%%", 	\
305 			    hpp_color_scnprintf, true);				\
306 }
307 
308 #define __HPP_ENTRY_ACC_PERCENT_FN(_type, _field)				\
309 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt,				\
310 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
311 {										\
312 	return hpp__fmt_acc(fmt, hpp, he, he_get_acc_##_field, " %*.2f%%",	\
313 			    hpp_entry_scnprintf, true);				\
314 }
315 
316 #define __HPP_SORT_ACC_FN(_type, _field)					\
317 static int64_t hpp__sort_##_type(struct perf_hpp_fmt *fmt __maybe_unused, 	\
318 				 struct hist_entry *a, struct hist_entry *b) 	\
319 {										\
320 	return __hpp__sort_acc(a, b, he_get_acc_##_field);			\
321 }
322 
323 #define __HPP_ENTRY_RAW_FN(_type, _field)					\
324 static u64 he_get_raw_##_field(struct hist_entry *he)				\
325 {										\
326 	return he->stat._field;							\
327 }										\
328 										\
329 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt,				\
330 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
331 {										\
332 	return hpp__fmt(fmt, hpp, he, he_get_raw_##_field, " %*"PRIu64, 	\
333 			hpp_entry_scnprintf, false);				\
334 }
335 
336 #define __HPP_SORT_RAW_FN(_type, _field)					\
337 static int64_t hpp__sort_##_type(struct perf_hpp_fmt *fmt __maybe_unused, 	\
338 				 struct hist_entry *a, struct hist_entry *b) 	\
339 {										\
340 	return __hpp__sort(a, b, he_get_raw_##_field);				\
341 }
342 
343 
344 #define HPP_PERCENT_FNS(_type, _field)					\
345 __HPP_COLOR_PERCENT_FN(_type, _field)					\
346 __HPP_ENTRY_PERCENT_FN(_type, _field)					\
347 __HPP_SORT_FN(_type, _field)
348 
349 #define HPP_PERCENT_ACC_FNS(_type, _field)				\
350 __HPP_COLOR_ACC_PERCENT_FN(_type, _field)				\
351 __HPP_ENTRY_ACC_PERCENT_FN(_type, _field)				\
352 __HPP_SORT_ACC_FN(_type, _field)
353 
354 #define HPP_RAW_FNS(_type, _field)					\
355 __HPP_ENTRY_RAW_FN(_type, _field)					\
356 __HPP_SORT_RAW_FN(_type, _field)
357 
358 HPP_PERCENT_FNS(overhead, period)
359 HPP_PERCENT_FNS(overhead_sys, period_sys)
360 HPP_PERCENT_FNS(overhead_us, period_us)
361 HPP_PERCENT_FNS(overhead_guest_sys, period_guest_sys)
362 HPP_PERCENT_FNS(overhead_guest_us, period_guest_us)
363 HPP_PERCENT_ACC_FNS(overhead_acc, period)
364 
365 HPP_RAW_FNS(samples, nr_events)
366 HPP_RAW_FNS(period, period)
367 
368 static int64_t hpp__nop_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
369 			    struct hist_entry *a __maybe_unused,
370 			    struct hist_entry *b __maybe_unused)
371 {
372 	return 0;
373 }
374 
375 static bool perf_hpp__is_hpp_entry(struct perf_hpp_fmt *a)
376 {
377 	return a->header == hpp__header_fn;
378 }
379 
380 static bool hpp__equal(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b)
381 {
382 	if (!perf_hpp__is_hpp_entry(a) || !perf_hpp__is_hpp_entry(b))
383 		return false;
384 
385 	return a->idx == b->idx;
386 }
387 
388 #define HPP__COLOR_PRINT_FNS(_name, _fn, _idx)		\
389 	{						\
390 		.name   = _name,			\
391 		.header	= hpp__header_fn,		\
392 		.width	= hpp__width_fn,		\
393 		.color	= hpp__color_ ## _fn,		\
394 		.entry	= hpp__entry_ ## _fn,		\
395 		.cmp	= hpp__nop_cmp,			\
396 		.collapse = hpp__nop_cmp,		\
397 		.sort	= hpp__sort_ ## _fn,		\
398 		.idx	= PERF_HPP__ ## _idx,		\
399 		.equal	= hpp__equal,			\
400 	}
401 
402 #define HPP__COLOR_ACC_PRINT_FNS(_name, _fn, _idx)	\
403 	{						\
404 		.name   = _name,			\
405 		.header	= hpp__header_fn,		\
406 		.width	= hpp__width_fn,		\
407 		.color	= hpp__color_ ## _fn,		\
408 		.entry	= hpp__entry_ ## _fn,		\
409 		.cmp	= hpp__nop_cmp,			\
410 		.collapse = hpp__nop_cmp,		\
411 		.sort	= hpp__sort_ ## _fn,		\
412 		.idx	= PERF_HPP__ ## _idx,		\
413 		.equal	= hpp__equal,			\
414 	}
415 
416 #define HPP__PRINT_FNS(_name, _fn, _idx)		\
417 	{						\
418 		.name   = _name,			\
419 		.header	= hpp__header_fn,		\
420 		.width	= hpp__width_fn,		\
421 		.entry	= hpp__entry_ ## _fn,		\
422 		.cmp	= hpp__nop_cmp,			\
423 		.collapse = hpp__nop_cmp,		\
424 		.sort	= hpp__sort_ ## _fn,		\
425 		.idx	= PERF_HPP__ ## _idx,		\
426 		.equal	= hpp__equal,			\
427 	}
428 
429 struct perf_hpp_fmt perf_hpp__format[] = {
430 	HPP__COLOR_PRINT_FNS("Overhead", overhead, OVERHEAD),
431 	HPP__COLOR_PRINT_FNS("sys", overhead_sys, OVERHEAD_SYS),
432 	HPP__COLOR_PRINT_FNS("usr", overhead_us, OVERHEAD_US),
433 	HPP__COLOR_PRINT_FNS("guest sys", overhead_guest_sys, OVERHEAD_GUEST_SYS),
434 	HPP__COLOR_PRINT_FNS("guest usr", overhead_guest_us, OVERHEAD_GUEST_US),
435 	HPP__COLOR_ACC_PRINT_FNS("Children", overhead_acc, OVERHEAD_ACC),
436 	HPP__PRINT_FNS("Samples", samples, SAMPLES),
437 	HPP__PRINT_FNS("Period", period, PERIOD)
438 };
439 
440 struct perf_hpp_list perf_hpp_list = {
441 	.fields	= LIST_HEAD_INIT(perf_hpp_list.fields),
442 	.sorts	= LIST_HEAD_INIT(perf_hpp_list.sorts),
443 };
444 
445 #undef HPP__COLOR_PRINT_FNS
446 #undef HPP__COLOR_ACC_PRINT_FNS
447 #undef HPP__PRINT_FNS
448 
449 #undef HPP_PERCENT_FNS
450 #undef HPP_PERCENT_ACC_FNS
451 #undef HPP_RAW_FNS
452 
453 #undef __HPP_HEADER_FN
454 #undef __HPP_WIDTH_FN
455 #undef __HPP_COLOR_PERCENT_FN
456 #undef __HPP_ENTRY_PERCENT_FN
457 #undef __HPP_COLOR_ACC_PERCENT_FN
458 #undef __HPP_ENTRY_ACC_PERCENT_FN
459 #undef __HPP_ENTRY_RAW_FN
460 #undef __HPP_SORT_FN
461 #undef __HPP_SORT_ACC_FN
462 #undef __HPP_SORT_RAW_FN
463 
464 
465 void perf_hpp__init(void)
466 {
467 	int i;
468 
469 	for (i = 0; i < PERF_HPP__MAX_INDEX; i++) {
470 		struct perf_hpp_fmt *fmt = &perf_hpp__format[i];
471 
472 		INIT_LIST_HEAD(&fmt->list);
473 
474 		/* sort_list may be linked by setup_sorting() */
475 		if (fmt->sort_list.next == NULL)
476 			INIT_LIST_HEAD(&fmt->sort_list);
477 	}
478 
479 	/*
480 	 * If user specified field order, no need to setup default fields.
481 	 */
482 	if (is_strict_order(field_order))
483 		return;
484 
485 	if (symbol_conf.cumulate_callchain) {
486 		hpp_dimension__add_output(PERF_HPP__OVERHEAD_ACC);
487 		perf_hpp__format[PERF_HPP__OVERHEAD].name = "Self";
488 	}
489 
490 	hpp_dimension__add_output(PERF_HPP__OVERHEAD);
491 
492 	if (symbol_conf.show_cpu_utilization) {
493 		hpp_dimension__add_output(PERF_HPP__OVERHEAD_SYS);
494 		hpp_dimension__add_output(PERF_HPP__OVERHEAD_US);
495 
496 		if (perf_guest) {
497 			hpp_dimension__add_output(PERF_HPP__OVERHEAD_GUEST_SYS);
498 			hpp_dimension__add_output(PERF_HPP__OVERHEAD_GUEST_US);
499 		}
500 	}
501 
502 	if (symbol_conf.show_nr_samples)
503 		hpp_dimension__add_output(PERF_HPP__SAMPLES);
504 
505 	if (symbol_conf.show_total_period)
506 		hpp_dimension__add_output(PERF_HPP__PERIOD);
507 }
508 
509 void perf_hpp_list__column_register(struct perf_hpp_list *list,
510 				    struct perf_hpp_fmt *format)
511 {
512 	list_add_tail(&format->list, &list->fields);
513 }
514 
515 void perf_hpp_list__register_sort_field(struct perf_hpp_list *list,
516 					struct perf_hpp_fmt *format)
517 {
518 	list_add_tail(&format->sort_list, &list->sorts);
519 }
520 
521 void perf_hpp__column_unregister(struct perf_hpp_fmt *format)
522 {
523 	list_del(&format->list);
524 }
525 
526 void perf_hpp__cancel_cumulate(void)
527 {
528 	struct perf_hpp_fmt *fmt, *acc, *ovh, *tmp;
529 
530 	if (is_strict_order(field_order))
531 		return;
532 
533 	ovh = &perf_hpp__format[PERF_HPP__OVERHEAD];
534 	acc = &perf_hpp__format[PERF_HPP__OVERHEAD_ACC];
535 
536 	perf_hpp_list__for_each_format_safe(&perf_hpp_list, fmt, tmp) {
537 		if (acc->equal(acc, fmt)) {
538 			perf_hpp__column_unregister(fmt);
539 			continue;
540 		}
541 
542 		if (ovh->equal(ovh, fmt))
543 			fmt->name = "Overhead";
544 	}
545 }
546 
547 static bool fmt_equal(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b)
548 {
549 	return a->equal && a->equal(a, b);
550 }
551 
552 void perf_hpp__setup_output_field(struct perf_hpp_list *list)
553 {
554 	struct perf_hpp_fmt *fmt;
555 
556 	/* append sort keys to output field */
557 	perf_hpp_list__for_each_sort_list(list, fmt) {
558 		struct perf_hpp_fmt *pos;
559 
560 		perf_hpp_list__for_each_format(list, pos) {
561 			if (fmt_equal(fmt, pos))
562 				goto next;
563 		}
564 
565 		perf_hpp__column_register(fmt);
566 next:
567 		continue;
568 	}
569 }
570 
571 void perf_hpp__append_sort_keys(struct perf_hpp_list *list)
572 {
573 	struct perf_hpp_fmt *fmt;
574 
575 	/* append output fields to sort keys */
576 	perf_hpp_list__for_each_format(list, fmt) {
577 		struct perf_hpp_fmt *pos;
578 
579 		perf_hpp_list__for_each_sort_list(list, pos) {
580 			if (fmt_equal(fmt, pos))
581 				goto next;
582 		}
583 
584 		perf_hpp__register_sort_field(fmt);
585 next:
586 		continue;
587 	}
588 }
589 
590 
591 static void fmt_free(struct perf_hpp_fmt *fmt)
592 {
593 	if (fmt->free)
594 		fmt->free(fmt);
595 }
596 
597 void perf_hpp__reset_output_field(struct perf_hpp_list *list)
598 {
599 	struct perf_hpp_fmt *fmt, *tmp;
600 
601 	/* reset output fields */
602 	perf_hpp_list__for_each_format_safe(list, fmt, tmp) {
603 		list_del_init(&fmt->list);
604 		list_del_init(&fmt->sort_list);
605 		fmt_free(fmt);
606 	}
607 
608 	/* reset sort keys */
609 	perf_hpp_list__for_each_sort_list_safe(list, fmt, tmp) {
610 		list_del_init(&fmt->list);
611 		list_del_init(&fmt->sort_list);
612 		fmt_free(fmt);
613 	}
614 }
615 
616 /*
617  * See hists__fprintf to match the column widths
618  */
619 unsigned int hists__sort_list_width(struct hists *hists)
620 {
621 	struct perf_hpp_fmt *fmt;
622 	int ret = 0;
623 	bool first = true;
624 	struct perf_hpp dummy_hpp;
625 
626 	hists__for_each_format(hists, fmt) {
627 		if (perf_hpp__should_skip(fmt, hists))
628 			continue;
629 
630 		if (first)
631 			first = false;
632 		else
633 			ret += 2;
634 
635 		ret += fmt->width(fmt, &dummy_hpp, hists_to_evsel(hists));
636 	}
637 
638 	if (verbose && sort__has_sym) /* Addr + origin */
639 		ret += 3 + BITS_PER_LONG / 4;
640 
641 	return ret;
642 }
643 
644 unsigned int hists__overhead_width(struct hists *hists)
645 {
646 	struct perf_hpp_fmt *fmt;
647 	int ret = 0;
648 	bool first = true;
649 	struct perf_hpp dummy_hpp;
650 
651 	hists__for_each_format(hists, fmt) {
652 		if (perf_hpp__is_sort_entry(fmt) || perf_hpp__is_dynamic_entry(fmt))
653 			break;
654 
655 		if (first)
656 			first = false;
657 		else
658 			ret += 2;
659 
660 		ret += fmt->width(fmt, &dummy_hpp, hists_to_evsel(hists));
661 	}
662 
663 	return ret;
664 }
665 
666 void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists)
667 {
668 	if (perf_hpp__is_sort_entry(fmt))
669 		return perf_hpp__reset_sort_width(fmt, hists);
670 
671 	if (perf_hpp__is_dynamic_entry(fmt))
672 		return;
673 
674 	BUG_ON(fmt->idx >= PERF_HPP__MAX_INDEX);
675 
676 	switch (fmt->idx) {
677 	case PERF_HPP__OVERHEAD:
678 	case PERF_HPP__OVERHEAD_SYS:
679 	case PERF_HPP__OVERHEAD_US:
680 	case PERF_HPP__OVERHEAD_ACC:
681 		fmt->len = 8;
682 		break;
683 
684 	case PERF_HPP__OVERHEAD_GUEST_SYS:
685 	case PERF_HPP__OVERHEAD_GUEST_US:
686 		fmt->len = 9;
687 		break;
688 
689 	case PERF_HPP__SAMPLES:
690 	case PERF_HPP__PERIOD:
691 		fmt->len = 12;
692 		break;
693 
694 	default:
695 		break;
696 	}
697 }
698 
699 void perf_hpp__set_user_width(const char *width_list_str)
700 {
701 	struct perf_hpp_fmt *fmt;
702 	const char *ptr = width_list_str;
703 
704 	perf_hpp_list__for_each_format(&perf_hpp_list, fmt) {
705 		char *p;
706 
707 		int len = strtol(ptr, &p, 10);
708 		fmt->user_len = len;
709 
710 		if (*p == ',')
711 			ptr = p + 1;
712 		else
713 			break;
714 	}
715 }
716 
717 static int add_hierarchy_fmt(struct hists *hists, struct perf_hpp_fmt *fmt)
718 {
719 	struct perf_hpp_list_node *node = NULL;
720 	struct perf_hpp_fmt *fmt_copy;
721 	bool found = false;
722 	bool skip = perf_hpp__should_skip(fmt, hists);
723 
724 	list_for_each_entry(node, &hists->hpp_formats, list) {
725 		if (node->level == fmt->level) {
726 			found = true;
727 			break;
728 		}
729 	}
730 
731 	if (!found) {
732 		node = malloc(sizeof(*node));
733 		if (node == NULL)
734 			return -1;
735 
736 		node->skip = skip;
737 		node->level = fmt->level;
738 		perf_hpp_list__init(&node->hpp);
739 
740 		hists->nr_hpp_node++;
741 		list_add_tail(&node->list, &hists->hpp_formats);
742 	}
743 
744 	fmt_copy = perf_hpp_fmt__dup(fmt);
745 	if (fmt_copy == NULL)
746 		return -1;
747 
748 	if (!skip)
749 		node->skip = false;
750 
751 	list_add_tail(&fmt_copy->list, &node->hpp.fields);
752 	list_add_tail(&fmt_copy->sort_list, &node->hpp.sorts);
753 
754 	return 0;
755 }
756 
757 int perf_hpp__setup_hists_formats(struct perf_hpp_list *list,
758 				  struct perf_evlist *evlist)
759 {
760 	struct perf_evsel *evsel;
761 	struct perf_hpp_fmt *fmt;
762 	struct hists *hists;
763 	int ret;
764 
765 	if (!symbol_conf.report_hierarchy)
766 		return 0;
767 
768 	evlist__for_each(evlist, evsel) {
769 		hists = evsel__hists(evsel);
770 
771 		perf_hpp_list__for_each_sort_list(list, fmt) {
772 			if (perf_hpp__is_dynamic_entry(fmt) &&
773 			    !perf_hpp__defined_dynamic_entry(fmt, hists))
774 				continue;
775 
776 			ret = add_hierarchy_fmt(hists, fmt);
777 			if (ret < 0)
778 				return ret;
779 		}
780 	}
781 
782 	return 0;
783 }
784