xref: /openbmc/linux/tools/perf/ui/hist.c (revision bc5aa3a0) 
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 hists *hists)
219 {
220 	int len = fmt->user_len ?: fmt->len;
221 	struct perf_evsel *evsel = hists_to_evsel(hists);
222 
223 	if (symbol_conf.event_group)
224 		len = max(len, evsel->nr_members * fmt->len);
225 
226 	if (len < (int)strlen(fmt->name))
227 		len = strlen(fmt->name);
228 
229 	return len;
230 }
231 
232 static int hpp__header_fn(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
233 			  struct hists *hists)
234 {
235 	int len = hpp__width_fn(fmt, hpp, hists);
236 	return scnprintf(hpp->buf, hpp->size, "%*s", len, fmt->name);
237 }
238 
239 static int hpp_color_scnprintf(struct perf_hpp *hpp, const char *fmt, ...)
240 {
241 	va_list args;
242 	ssize_t ssize = hpp->size;
243 	double percent;
244 	int ret, len;
245 
246 	va_start(args, fmt);
247 	len = va_arg(args, int);
248 	percent = va_arg(args, double);
249 	ret = percent_color_len_snprintf(hpp->buf, hpp->size, fmt, len, percent);
250 	va_end(args);
251 
252 	return (ret >= ssize) ? (ssize - 1) : ret;
253 }
254 
255 static int hpp_entry_scnprintf(struct perf_hpp *hpp, const char *fmt, ...)
256 {
257 	va_list args;
258 	ssize_t ssize = hpp->size;
259 	int ret;
260 
261 	va_start(args, fmt);
262 	ret = vsnprintf(hpp->buf, hpp->size, fmt, args);
263 	va_end(args);
264 
265 	return (ret >= ssize) ? (ssize - 1) : ret;
266 }
267 
268 #define __HPP_COLOR_PERCENT_FN(_type, _field)					\
269 static u64 he_get_##_field(struct hist_entry *he)				\
270 {										\
271 	return he->stat._field;							\
272 }										\
273 										\
274 static int hpp__color_##_type(struct perf_hpp_fmt *fmt,				\
275 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
276 {										\
277 	return hpp__fmt(fmt, hpp, he, he_get_##_field, " %*.2f%%",		\
278 			hpp_color_scnprintf, true);				\
279 }
280 
281 #define __HPP_ENTRY_PERCENT_FN(_type, _field)					\
282 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt,				\
283 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
284 {										\
285 	return hpp__fmt(fmt, hpp, he, he_get_##_field, " %*.2f%%",		\
286 			hpp_entry_scnprintf, true);				\
287 }
288 
289 #define __HPP_SORT_FN(_type, _field)						\
290 static int64_t hpp__sort_##_type(struct perf_hpp_fmt *fmt __maybe_unused, 	\
291 				 struct hist_entry *a, struct hist_entry *b) 	\
292 {										\
293 	return __hpp__sort(a, b, he_get_##_field);				\
294 }
295 
296 #define __HPP_COLOR_ACC_PERCENT_FN(_type, _field)				\
297 static u64 he_get_acc_##_field(struct hist_entry *he)				\
298 {										\
299 	return he->stat_acc->_field;						\
300 }										\
301 										\
302 static int hpp__color_##_type(struct perf_hpp_fmt *fmt,				\
303 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
304 {										\
305 	return hpp__fmt_acc(fmt, hpp, he, he_get_acc_##_field, " %*.2f%%", 	\
306 			    hpp_color_scnprintf, true);				\
307 }
308 
309 #define __HPP_ENTRY_ACC_PERCENT_FN(_type, _field)				\
310 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt,				\
311 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
312 {										\
313 	return hpp__fmt_acc(fmt, hpp, he, he_get_acc_##_field, " %*.2f%%",	\
314 			    hpp_entry_scnprintf, true);				\
315 }
316 
317 #define __HPP_SORT_ACC_FN(_type, _field)					\
318 static int64_t hpp__sort_##_type(struct perf_hpp_fmt *fmt __maybe_unused, 	\
319 				 struct hist_entry *a, struct hist_entry *b) 	\
320 {										\
321 	return __hpp__sort_acc(a, b, he_get_acc_##_field);			\
322 }
323 
324 #define __HPP_ENTRY_RAW_FN(_type, _field)					\
325 static u64 he_get_raw_##_field(struct hist_entry *he)				\
326 {										\
327 	return he->stat._field;							\
328 }										\
329 										\
330 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt,				\
331 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
332 {										\
333 	return hpp__fmt(fmt, hpp, he, he_get_raw_##_field, " %*"PRIu64, 	\
334 			hpp_entry_scnprintf, false);				\
335 }
336 
337 #define __HPP_SORT_RAW_FN(_type, _field)					\
338 static int64_t hpp__sort_##_type(struct perf_hpp_fmt *fmt __maybe_unused, 	\
339 				 struct hist_entry *a, struct hist_entry *b) 	\
340 {										\
341 	return __hpp__sort(a, b, he_get_raw_##_field);				\
342 }
343 
344 
345 #define HPP_PERCENT_FNS(_type, _field)					\
346 __HPP_COLOR_PERCENT_FN(_type, _field)					\
347 __HPP_ENTRY_PERCENT_FN(_type, _field)					\
348 __HPP_SORT_FN(_type, _field)
349 
350 #define HPP_PERCENT_ACC_FNS(_type, _field)				\
351 __HPP_COLOR_ACC_PERCENT_FN(_type, _field)				\
352 __HPP_ENTRY_ACC_PERCENT_FN(_type, _field)				\
353 __HPP_SORT_ACC_FN(_type, _field)
354 
355 #define HPP_RAW_FNS(_type, _field)					\
356 __HPP_ENTRY_RAW_FN(_type, _field)					\
357 __HPP_SORT_RAW_FN(_type, _field)
358 
359 HPP_PERCENT_FNS(overhead, period)
360 HPP_PERCENT_FNS(overhead_sys, period_sys)
361 HPP_PERCENT_FNS(overhead_us, period_us)
362 HPP_PERCENT_FNS(overhead_guest_sys, period_guest_sys)
363 HPP_PERCENT_FNS(overhead_guest_us, period_guest_us)
364 HPP_PERCENT_ACC_FNS(overhead_acc, period)
365 
366 HPP_RAW_FNS(samples, nr_events)
367 HPP_RAW_FNS(period, period)
368 
369 static int64_t hpp__nop_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
370 			    struct hist_entry *a __maybe_unused,
371 			    struct hist_entry *b __maybe_unused)
372 {
373 	return 0;
374 }
375 
376 static bool perf_hpp__is_hpp_entry(struct perf_hpp_fmt *a)
377 {
378 	return a->header == hpp__header_fn;
379 }
380 
381 static bool hpp__equal(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b)
382 {
383 	if (!perf_hpp__is_hpp_entry(a) || !perf_hpp__is_hpp_entry(b))
384 		return false;
385 
386 	return a->idx == b->idx;
387 }
388 
389 #define HPP__COLOR_PRINT_FNS(_name, _fn, _idx)		\
390 	{						\
391 		.name   = _name,			\
392 		.header	= hpp__header_fn,		\
393 		.width	= hpp__width_fn,		\
394 		.color	= hpp__color_ ## _fn,		\
395 		.entry	= hpp__entry_ ## _fn,		\
396 		.cmp	= hpp__nop_cmp,			\
397 		.collapse = hpp__nop_cmp,		\
398 		.sort	= hpp__sort_ ## _fn,		\
399 		.idx	= PERF_HPP__ ## _idx,		\
400 		.equal	= hpp__equal,			\
401 	}
402 
403 #define HPP__COLOR_ACC_PRINT_FNS(_name, _fn, _idx)	\
404 	{						\
405 		.name   = _name,			\
406 		.header	= hpp__header_fn,		\
407 		.width	= hpp__width_fn,		\
408 		.color	= hpp__color_ ## _fn,		\
409 		.entry	= hpp__entry_ ## _fn,		\
410 		.cmp	= hpp__nop_cmp,			\
411 		.collapse = hpp__nop_cmp,		\
412 		.sort	= hpp__sort_ ## _fn,		\
413 		.idx	= PERF_HPP__ ## _idx,		\
414 		.equal	= hpp__equal,			\
415 	}
416 
417 #define HPP__PRINT_FNS(_name, _fn, _idx)		\
418 	{						\
419 		.name   = _name,			\
420 		.header	= hpp__header_fn,		\
421 		.width	= hpp__width_fn,		\
422 		.entry	= hpp__entry_ ## _fn,		\
423 		.cmp	= hpp__nop_cmp,			\
424 		.collapse = hpp__nop_cmp,		\
425 		.sort	= hpp__sort_ ## _fn,		\
426 		.idx	= PERF_HPP__ ## _idx,		\
427 		.equal	= hpp__equal,			\
428 	}
429 
430 struct perf_hpp_fmt perf_hpp__format[] = {
431 	HPP__COLOR_PRINT_FNS("Overhead", overhead, OVERHEAD),
432 	HPP__COLOR_PRINT_FNS("sys", overhead_sys, OVERHEAD_SYS),
433 	HPP__COLOR_PRINT_FNS("usr", overhead_us, OVERHEAD_US),
434 	HPP__COLOR_PRINT_FNS("guest sys", overhead_guest_sys, OVERHEAD_GUEST_SYS),
435 	HPP__COLOR_PRINT_FNS("guest usr", overhead_guest_us, OVERHEAD_GUEST_US),
436 	HPP__COLOR_ACC_PRINT_FNS("Children", overhead_acc, OVERHEAD_ACC),
437 	HPP__PRINT_FNS("Samples", samples, SAMPLES),
438 	HPP__PRINT_FNS("Period", period, PERIOD)
439 };
440 
441 struct perf_hpp_list perf_hpp_list = {
442 	.fields	= LIST_HEAD_INIT(perf_hpp_list.fields),
443 	.sorts	= LIST_HEAD_INIT(perf_hpp_list.sorts),
444 };
445 
446 #undef HPP__COLOR_PRINT_FNS
447 #undef HPP__COLOR_ACC_PRINT_FNS
448 #undef HPP__PRINT_FNS
449 
450 #undef HPP_PERCENT_FNS
451 #undef HPP_PERCENT_ACC_FNS
452 #undef HPP_RAW_FNS
453 
454 #undef __HPP_HEADER_FN
455 #undef __HPP_WIDTH_FN
456 #undef __HPP_COLOR_PERCENT_FN
457 #undef __HPP_ENTRY_PERCENT_FN
458 #undef __HPP_COLOR_ACC_PERCENT_FN
459 #undef __HPP_ENTRY_ACC_PERCENT_FN
460 #undef __HPP_ENTRY_RAW_FN
461 #undef __HPP_SORT_FN
462 #undef __HPP_SORT_ACC_FN
463 #undef __HPP_SORT_RAW_FN
464 
465 
466 void perf_hpp__init(void)
467 {
468 	int i;
469 
470 	for (i = 0; i < PERF_HPP__MAX_INDEX; i++) {
471 		struct perf_hpp_fmt *fmt = &perf_hpp__format[i];
472 
473 		INIT_LIST_HEAD(&fmt->list);
474 
475 		/* sort_list may be linked by setup_sorting() */
476 		if (fmt->sort_list.next == NULL)
477 			INIT_LIST_HEAD(&fmt->sort_list);
478 	}
479 
480 	/*
481 	 * If user specified field order, no need to setup default fields.
482 	 */
483 	if (is_strict_order(field_order))
484 		return;
485 
486 	if (symbol_conf.cumulate_callchain) {
487 		hpp_dimension__add_output(PERF_HPP__OVERHEAD_ACC);
488 		perf_hpp__format[PERF_HPP__OVERHEAD].name = "Self";
489 	}
490 
491 	hpp_dimension__add_output(PERF_HPP__OVERHEAD);
492 
493 	if (symbol_conf.show_cpu_utilization) {
494 		hpp_dimension__add_output(PERF_HPP__OVERHEAD_SYS);
495 		hpp_dimension__add_output(PERF_HPP__OVERHEAD_US);
496 
497 		if (perf_guest) {
498 			hpp_dimension__add_output(PERF_HPP__OVERHEAD_GUEST_SYS);
499 			hpp_dimension__add_output(PERF_HPP__OVERHEAD_GUEST_US);
500 		}
501 	}
502 
503 	if (symbol_conf.show_nr_samples)
504 		hpp_dimension__add_output(PERF_HPP__SAMPLES);
505 
506 	if (symbol_conf.show_total_period)
507 		hpp_dimension__add_output(PERF_HPP__PERIOD);
508 }
509 
510 void perf_hpp_list__column_register(struct perf_hpp_list *list,
511 				    struct perf_hpp_fmt *format)
512 {
513 	list_add_tail(&format->list, &list->fields);
514 }
515 
516 void perf_hpp_list__register_sort_field(struct perf_hpp_list *list,
517 					struct perf_hpp_fmt *format)
518 {
519 	list_add_tail(&format->sort_list, &list->sorts);
520 }
521 
522 void perf_hpp__column_unregister(struct perf_hpp_fmt *format)
523 {
524 	list_del(&format->list);
525 }
526 
527 void perf_hpp__cancel_cumulate(void)
528 {
529 	struct perf_hpp_fmt *fmt, *acc, *ovh, *tmp;
530 
531 	if (is_strict_order(field_order))
532 		return;
533 
534 	ovh = &perf_hpp__format[PERF_HPP__OVERHEAD];
535 	acc = &perf_hpp__format[PERF_HPP__OVERHEAD_ACC];
536 
537 	perf_hpp_list__for_each_format_safe(&perf_hpp_list, fmt, tmp) {
538 		if (acc->equal(acc, fmt)) {
539 			perf_hpp__column_unregister(fmt);
540 			continue;
541 		}
542 
543 		if (ovh->equal(ovh, fmt))
544 			fmt->name = "Overhead";
545 	}
546 }
547 
548 static bool fmt_equal(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b)
549 {
550 	return a->equal && a->equal(a, b);
551 }
552 
553 void perf_hpp__setup_output_field(struct perf_hpp_list *list)
554 {
555 	struct perf_hpp_fmt *fmt;
556 
557 	/* append sort keys to output field */
558 	perf_hpp_list__for_each_sort_list(list, fmt) {
559 		struct perf_hpp_fmt *pos;
560 
561 		perf_hpp_list__for_each_format(list, pos) {
562 			if (fmt_equal(fmt, pos))
563 				goto next;
564 		}
565 
566 		perf_hpp__column_register(fmt);
567 next:
568 		continue;
569 	}
570 }
571 
572 void perf_hpp__append_sort_keys(struct perf_hpp_list *list)
573 {
574 	struct perf_hpp_fmt *fmt;
575 
576 	/* append output fields to sort keys */
577 	perf_hpp_list__for_each_format(list, fmt) {
578 		struct perf_hpp_fmt *pos;
579 
580 		perf_hpp_list__for_each_sort_list(list, pos) {
581 			if (fmt_equal(fmt, pos))
582 				goto next;
583 		}
584 
585 		perf_hpp__register_sort_field(fmt);
586 next:
587 		continue;
588 	}
589 }
590 
591 
592 static void fmt_free(struct perf_hpp_fmt *fmt)
593 {
594 	if (fmt->free)
595 		fmt->free(fmt);
596 }
597 
598 void perf_hpp__reset_output_field(struct perf_hpp_list *list)
599 {
600 	struct perf_hpp_fmt *fmt, *tmp;
601 
602 	/* reset output fields */
603 	perf_hpp_list__for_each_format_safe(list, fmt, tmp) {
604 		list_del_init(&fmt->list);
605 		list_del_init(&fmt->sort_list);
606 		fmt_free(fmt);
607 	}
608 
609 	/* reset sort keys */
610 	perf_hpp_list__for_each_sort_list_safe(list, fmt, tmp) {
611 		list_del_init(&fmt->list);
612 		list_del_init(&fmt->sort_list);
613 		fmt_free(fmt);
614 	}
615 }
616 
617 /*
618  * See hists__fprintf to match the column widths
619  */
620 unsigned int hists__sort_list_width(struct hists *hists)
621 {
622 	struct perf_hpp_fmt *fmt;
623 	int ret = 0;
624 	bool first = true;
625 	struct perf_hpp dummy_hpp;
626 
627 	hists__for_each_format(hists, fmt) {
628 		if (perf_hpp__should_skip(fmt, hists))
629 			continue;
630 
631 		if (first)
632 			first = false;
633 		else
634 			ret += 2;
635 
636 		ret += fmt->width(fmt, &dummy_hpp, hists);
637 	}
638 
639 	if (verbose && hists__has(hists, sym)) /* Addr + origin */
640 		ret += 3 + BITS_PER_LONG / 4;
641 
642 	return ret;
643 }
644 
645 unsigned int hists__overhead_width(struct hists *hists)
646 {
647 	struct perf_hpp_fmt *fmt;
648 	int ret = 0;
649 	bool first = true;
650 	struct perf_hpp dummy_hpp;
651 
652 	hists__for_each_format(hists, fmt) {
653 		if (perf_hpp__is_sort_entry(fmt) || perf_hpp__is_dynamic_entry(fmt))
654 			break;
655 
656 		if (first)
657 			first = false;
658 		else
659 			ret += 2;
660 
661 		ret += fmt->width(fmt, &dummy_hpp, hists);
662 	}
663 
664 	return ret;
665 }
666 
667 void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists)
668 {
669 	if (perf_hpp__is_sort_entry(fmt))
670 		return perf_hpp__reset_sort_width(fmt, hists);
671 
672 	if (perf_hpp__is_dynamic_entry(fmt))
673 		return;
674 
675 	BUG_ON(fmt->idx >= PERF_HPP__MAX_INDEX);
676 
677 	switch (fmt->idx) {
678 	case PERF_HPP__OVERHEAD:
679 	case PERF_HPP__OVERHEAD_SYS:
680 	case PERF_HPP__OVERHEAD_US:
681 	case PERF_HPP__OVERHEAD_ACC:
682 		fmt->len = 8;
683 		break;
684 
685 	case PERF_HPP__OVERHEAD_GUEST_SYS:
686 	case PERF_HPP__OVERHEAD_GUEST_US:
687 		fmt->len = 9;
688 		break;
689 
690 	case PERF_HPP__SAMPLES:
691 	case PERF_HPP__PERIOD:
692 		fmt->len = 12;
693 		break;
694 
695 	default:
696 		break;
697 	}
698 }
699 
700 void perf_hpp__set_user_width(const char *width_list_str)
701 {
702 	struct perf_hpp_fmt *fmt;
703 	const char *ptr = width_list_str;
704 
705 	perf_hpp_list__for_each_format(&perf_hpp_list, fmt) {
706 		char *p;
707 
708 		int len = strtol(ptr, &p, 10);
709 		fmt->user_len = len;
710 
711 		if (*p == ',')
712 			ptr = p + 1;
713 		else
714 			break;
715 	}
716 }
717 
718 static int add_hierarchy_fmt(struct hists *hists, struct perf_hpp_fmt *fmt)
719 {
720 	struct perf_hpp_list_node *node = NULL;
721 	struct perf_hpp_fmt *fmt_copy;
722 	bool found = false;
723 	bool skip = perf_hpp__should_skip(fmt, hists);
724 
725 	list_for_each_entry(node, &hists->hpp_formats, list) {
726 		if (node->level == fmt->level) {
727 			found = true;
728 			break;
729 		}
730 	}
731 
732 	if (!found) {
733 		node = malloc(sizeof(*node));
734 		if (node == NULL)
735 			return -1;
736 
737 		node->skip = skip;
738 		node->level = fmt->level;
739 		perf_hpp_list__init(&node->hpp);
740 
741 		hists->nr_hpp_node++;
742 		list_add_tail(&node->list, &hists->hpp_formats);
743 	}
744 
745 	fmt_copy = perf_hpp_fmt__dup(fmt);
746 	if (fmt_copy == NULL)
747 		return -1;
748 
749 	if (!skip)
750 		node->skip = false;
751 
752 	list_add_tail(&fmt_copy->list, &node->hpp.fields);
753 	list_add_tail(&fmt_copy->sort_list, &node->hpp.sorts);
754 
755 	return 0;
756 }
757 
758 int perf_hpp__setup_hists_formats(struct perf_hpp_list *list,
759 				  struct perf_evlist *evlist)
760 {
761 	struct perf_evsel *evsel;
762 	struct perf_hpp_fmt *fmt;
763 	struct hists *hists;
764 	int ret;
765 
766 	if (!symbol_conf.report_hierarchy)
767 		return 0;
768 
769 	evlist__for_each_entry(evlist, evsel) {
770 		hists = evsel__hists(evsel);
771 
772 		perf_hpp_list__for_each_sort_list(list, fmt) {
773 			if (perf_hpp__is_dynamic_entry(fmt) &&
774 			    !perf_hpp__defined_dynamic_entry(fmt, hists))
775 				continue;
776 
777 			ret = add_hierarchy_fmt(hists, fmt);
778 			if (ret < 0)
779 				return ret;
780 		}
781 	}
782 
783 	return 0;
784 }
785