xref: /openbmc/linux/tools/perf/ui/hist.c (revision 93d90ad7) 
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 
9 /* hist period print (hpp) functions */
10 
11 #define hpp__call_print_fn(hpp, fn, fmt, ...)			\
12 ({								\
13 	int __ret = fn(hpp, fmt, ##__VA_ARGS__);		\
14 	advance_hpp(hpp, __ret);				\
15 	__ret;							\
16 })
17 
18 static int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
19 		      hpp_field_fn get_field, const char *fmt, int len,
20 		      hpp_snprint_fn print_fn, bool fmt_percent)
21 {
22 	int ret;
23 	struct hists *hists = he->hists;
24 	struct perf_evsel *evsel = hists_to_evsel(hists);
25 	char *buf = hpp->buf;
26 	size_t size = hpp->size;
27 
28 	if (fmt_percent) {
29 		double percent = 0.0;
30 		u64 total = hists__total_period(hists);
31 
32 		if (total)
33 			percent = 100.0 * get_field(he) / total;
34 
35 		ret = hpp__call_print_fn(hpp, print_fn, fmt, len, percent);
36 	} else
37 		ret = hpp__call_print_fn(hpp, print_fn, fmt, len, get_field(he));
38 
39 	if (perf_evsel__is_group_event(evsel)) {
40 		int prev_idx, idx_delta;
41 		struct hist_entry *pair;
42 		int nr_members = evsel->nr_members;
43 
44 		prev_idx = perf_evsel__group_idx(evsel);
45 
46 		list_for_each_entry(pair, &he->pairs.head, pairs.node) {
47 			u64 period = get_field(pair);
48 			u64 total = hists__total_period(pair->hists);
49 
50 			if (!total)
51 				continue;
52 
53 			evsel = hists_to_evsel(pair->hists);
54 			idx_delta = perf_evsel__group_idx(evsel) - prev_idx - 1;
55 
56 			while (idx_delta--) {
57 				/*
58 				 * zero-fill group members in the middle which
59 				 * have no sample
60 				 */
61 				if (fmt_percent) {
62 					ret += hpp__call_print_fn(hpp, print_fn,
63 								  fmt, len, 0.0);
64 				} else {
65 					ret += hpp__call_print_fn(hpp, print_fn,
66 								  fmt, len, 0ULL);
67 				}
68 			}
69 
70 			if (fmt_percent) {
71 				ret += hpp__call_print_fn(hpp, print_fn, fmt, len,
72 							  100.0 * period / total);
73 			} else {
74 				ret += hpp__call_print_fn(hpp, print_fn, fmt,
75 							  len, period);
76 			}
77 
78 			prev_idx = perf_evsel__group_idx(evsel);
79 		}
80 
81 		idx_delta = nr_members - prev_idx - 1;
82 
83 		while (idx_delta--) {
84 			/*
85 			 * zero-fill group members at last which have no sample
86 			 */
87 			if (fmt_percent) {
88 				ret += hpp__call_print_fn(hpp, print_fn,
89 							  fmt, len, 0.0);
90 			} else {
91 				ret += hpp__call_print_fn(hpp, print_fn,
92 							  fmt, len, 0ULL);
93 			}
94 		}
95 	}
96 
97 	/*
98 	 * Restore original buf and size as it's where caller expects
99 	 * the result will be saved.
100 	 */
101 	hpp->buf = buf;
102 	hpp->size = size;
103 
104 	return ret;
105 }
106 
107 int hpp__fmt(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
108 	     struct hist_entry *he, hpp_field_fn get_field,
109 	     const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent)
110 {
111 	int len = fmt->user_len ?: fmt->len;
112 
113 	if (symbol_conf.field_sep) {
114 		return __hpp__fmt(hpp, he, get_field, fmtstr, 1,
115 				  print_fn, fmt_percent);
116 	}
117 
118 	if (fmt_percent)
119 		len -= 2; /* 2 for a space and a % sign */
120 	else
121 		len -= 1;
122 
123 	return  __hpp__fmt(hpp, he, get_field, fmtstr, len, print_fn, fmt_percent);
124 }
125 
126 int hpp__fmt_acc(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
127 		 struct hist_entry *he, hpp_field_fn get_field,
128 		 const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent)
129 {
130 	if (!symbol_conf.cumulate_callchain) {
131 		int len = fmt->user_len ?: fmt->len;
132 		return snprintf(hpp->buf, hpp->size, " %*s", len - 1, "N/A");
133 	}
134 
135 	return hpp__fmt(fmt, hpp, he, get_field, fmtstr, print_fn, fmt_percent);
136 }
137 
138 static int field_cmp(u64 field_a, u64 field_b)
139 {
140 	if (field_a > field_b)
141 		return 1;
142 	if (field_a < field_b)
143 		return -1;
144 	return 0;
145 }
146 
147 static int __hpp__sort(struct hist_entry *a, struct hist_entry *b,
148 		       hpp_field_fn get_field)
149 {
150 	s64 ret;
151 	int i, nr_members;
152 	struct perf_evsel *evsel;
153 	struct hist_entry *pair;
154 	u64 *fields_a, *fields_b;
155 
156 	ret = field_cmp(get_field(a), get_field(b));
157 	if (ret || !symbol_conf.event_group)
158 		return ret;
159 
160 	evsel = hists_to_evsel(a->hists);
161 	if (!perf_evsel__is_group_event(evsel))
162 		return ret;
163 
164 	nr_members = evsel->nr_members;
165 	fields_a = calloc(nr_members, sizeof(*fields_a));
166 	fields_b = calloc(nr_members, sizeof(*fields_b));
167 
168 	if (!fields_a || !fields_b)
169 		goto out;
170 
171 	list_for_each_entry(pair, &a->pairs.head, pairs.node) {
172 		evsel = hists_to_evsel(pair->hists);
173 		fields_a[perf_evsel__group_idx(evsel)] = get_field(pair);
174 	}
175 
176 	list_for_each_entry(pair, &b->pairs.head, pairs.node) {
177 		evsel = hists_to_evsel(pair->hists);
178 		fields_b[perf_evsel__group_idx(evsel)] = get_field(pair);
179 	}
180 
181 	for (i = 1; i < nr_members; i++) {
182 		ret = field_cmp(fields_a[i], fields_b[i]);
183 		if (ret)
184 			break;
185 	}
186 
187 out:
188 	free(fields_a);
189 	free(fields_b);
190 
191 	return ret;
192 }
193 
194 static int __hpp__sort_acc(struct hist_entry *a, struct hist_entry *b,
195 			   hpp_field_fn get_field)
196 {
197 	s64 ret = 0;
198 
199 	if (symbol_conf.cumulate_callchain) {
200 		/*
201 		 * Put caller above callee when they have equal period.
202 		 */
203 		ret = field_cmp(get_field(a), get_field(b));
204 		if (ret)
205 			return ret;
206 
207 		if (a->thread != b->thread || !symbol_conf.use_callchain)
208 			return 0;
209 
210 		ret = b->callchain->max_depth - a->callchain->max_depth;
211 	}
212 	return ret;
213 }
214 
215 static int hpp__width_fn(struct perf_hpp_fmt *fmt,
216 			 struct perf_hpp *hpp __maybe_unused,
217 			 struct perf_evsel *evsel)
218 {
219 	int len = fmt->user_len ?: fmt->len;
220 
221 	if (symbol_conf.event_group)
222 		len = max(len, evsel->nr_members * fmt->len);
223 
224 	if (len < (int)strlen(fmt->name))
225 		len = strlen(fmt->name);
226 
227 	return len;
228 }
229 
230 static int hpp__header_fn(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
231 			  struct perf_evsel *evsel)
232 {
233 	int len = hpp__width_fn(fmt, hpp, evsel);
234 	return scnprintf(hpp->buf, hpp->size, "%*s", len, fmt->name);
235 }
236 
237 static int hpp_color_scnprintf(struct perf_hpp *hpp, const char *fmt, ...)
238 {
239 	va_list args;
240 	ssize_t ssize = hpp->size;
241 	double percent;
242 	int ret, len;
243 
244 	va_start(args, fmt);
245 	len = va_arg(args, int);
246 	percent = va_arg(args, double);
247 	ret = percent_color_len_snprintf(hpp->buf, hpp->size, fmt, len, percent);
248 	va_end(args);
249 
250 	return (ret >= ssize) ? (ssize - 1) : ret;
251 }
252 
253 static int hpp_entry_scnprintf(struct perf_hpp *hpp, const char *fmt, ...)
254 {
255 	va_list args;
256 	ssize_t ssize = hpp->size;
257 	int ret;
258 
259 	va_start(args, fmt);
260 	ret = vsnprintf(hpp->buf, hpp->size, fmt, args);
261 	va_end(args);
262 
263 	return (ret >= ssize) ? (ssize - 1) : ret;
264 }
265 
266 #define __HPP_COLOR_PERCENT_FN(_type, _field)					\
267 static u64 he_get_##_field(struct hist_entry *he)				\
268 {										\
269 	return he->stat._field;							\
270 }										\
271 										\
272 static int hpp__color_##_type(struct perf_hpp_fmt *fmt,				\
273 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
274 {										\
275 	return hpp__fmt(fmt, hpp, he, he_get_##_field, " %*.2f%%",		\
276 			hpp_color_scnprintf, true);				\
277 }
278 
279 #define __HPP_ENTRY_PERCENT_FN(_type, _field)					\
280 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt,				\
281 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
282 {										\
283 	return hpp__fmt(fmt, hpp, he, he_get_##_field, " %*.2f%%",		\
284 			hpp_entry_scnprintf, true);				\
285 }
286 
287 #define __HPP_SORT_FN(_type, _field)						\
288 static int64_t hpp__sort_##_type(struct hist_entry *a, struct hist_entry *b)	\
289 {										\
290 	return __hpp__sort(a, b, he_get_##_field);				\
291 }
292 
293 #define __HPP_COLOR_ACC_PERCENT_FN(_type, _field)				\
294 static u64 he_get_acc_##_field(struct hist_entry *he)				\
295 {										\
296 	return he->stat_acc->_field;						\
297 }										\
298 										\
299 static int hpp__color_##_type(struct perf_hpp_fmt *fmt,				\
300 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
301 {										\
302 	return hpp__fmt_acc(fmt, hpp, he, he_get_acc_##_field, " %*.2f%%", 	\
303 			    hpp_color_scnprintf, true);				\
304 }
305 
306 #define __HPP_ENTRY_ACC_PERCENT_FN(_type, _field)				\
307 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt,				\
308 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
309 {										\
310 	return hpp__fmt_acc(fmt, hpp, he, he_get_acc_##_field, " %*.2f%%",	\
311 			    hpp_entry_scnprintf, true);				\
312 }
313 
314 #define __HPP_SORT_ACC_FN(_type, _field)					\
315 static int64_t hpp__sort_##_type(struct hist_entry *a, struct hist_entry *b)	\
316 {										\
317 	return __hpp__sort_acc(a, b, he_get_acc_##_field);			\
318 }
319 
320 #define __HPP_ENTRY_RAW_FN(_type, _field)					\
321 static u64 he_get_raw_##_field(struct hist_entry *he)				\
322 {										\
323 	return he->stat._field;							\
324 }										\
325 										\
326 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt,				\
327 			      struct perf_hpp *hpp, struct hist_entry *he) 	\
328 {										\
329 	return hpp__fmt(fmt, hpp, he, he_get_raw_##_field, " %*"PRIu64, 	\
330 			hpp_entry_scnprintf, false);				\
331 }
332 
333 #define __HPP_SORT_RAW_FN(_type, _field)					\
334 static int64_t hpp__sort_##_type(struct hist_entry *a, struct hist_entry *b)	\
335 {										\
336 	return __hpp__sort(a, b, he_get_raw_##_field);				\
337 }
338 
339 
340 #define HPP_PERCENT_FNS(_type, _field)					\
341 __HPP_COLOR_PERCENT_FN(_type, _field)					\
342 __HPP_ENTRY_PERCENT_FN(_type, _field)					\
343 __HPP_SORT_FN(_type, _field)
344 
345 #define HPP_PERCENT_ACC_FNS(_type, _field)				\
346 __HPP_COLOR_ACC_PERCENT_FN(_type, _field)				\
347 __HPP_ENTRY_ACC_PERCENT_FN(_type, _field)				\
348 __HPP_SORT_ACC_FN(_type, _field)
349 
350 #define HPP_RAW_FNS(_type, _field)					\
351 __HPP_ENTRY_RAW_FN(_type, _field)					\
352 __HPP_SORT_RAW_FN(_type, _field)
353 
354 HPP_PERCENT_FNS(overhead, period)
355 HPP_PERCENT_FNS(overhead_sys, period_sys)
356 HPP_PERCENT_FNS(overhead_us, period_us)
357 HPP_PERCENT_FNS(overhead_guest_sys, period_guest_sys)
358 HPP_PERCENT_FNS(overhead_guest_us, period_guest_us)
359 HPP_PERCENT_ACC_FNS(overhead_acc, period)
360 
361 HPP_RAW_FNS(samples, nr_events)
362 HPP_RAW_FNS(period, period)
363 
364 static int64_t hpp__nop_cmp(struct hist_entry *a __maybe_unused,
365 			    struct hist_entry *b __maybe_unused)
366 {
367 	return 0;
368 }
369 
370 #define HPP__COLOR_PRINT_FNS(_name, _fn)		\
371 	{						\
372 		.name   = _name,			\
373 		.header	= hpp__header_fn,		\
374 		.width	= hpp__width_fn,		\
375 		.color	= hpp__color_ ## _fn,		\
376 		.entry	= hpp__entry_ ## _fn,		\
377 		.cmp	= hpp__nop_cmp,			\
378 		.collapse = hpp__nop_cmp,		\
379 		.sort	= hpp__sort_ ## _fn,		\
380 	}
381 
382 #define HPP__COLOR_ACC_PRINT_FNS(_name, _fn)		\
383 	{						\
384 		.name   = _name,			\
385 		.header	= hpp__header_fn,		\
386 		.width	= hpp__width_fn,		\
387 		.color	= hpp__color_ ## _fn,		\
388 		.entry	= hpp__entry_ ## _fn,		\
389 		.cmp	= hpp__nop_cmp,			\
390 		.collapse = hpp__nop_cmp,		\
391 		.sort	= hpp__sort_ ## _fn,		\
392 	}
393 
394 #define HPP__PRINT_FNS(_name, _fn)			\
395 	{						\
396 		.name   = _name,			\
397 		.header	= hpp__header_fn,		\
398 		.width	= hpp__width_fn,		\
399 		.entry	= hpp__entry_ ## _fn,		\
400 		.cmp	= hpp__nop_cmp,			\
401 		.collapse = hpp__nop_cmp,		\
402 		.sort	= hpp__sort_ ## _fn,		\
403 	}
404 
405 struct perf_hpp_fmt perf_hpp__format[] = {
406 	HPP__COLOR_PRINT_FNS("Overhead", overhead),
407 	HPP__COLOR_PRINT_FNS("sys", overhead_sys),
408 	HPP__COLOR_PRINT_FNS("usr", overhead_us),
409 	HPP__COLOR_PRINT_FNS("guest sys", overhead_guest_sys),
410 	HPP__COLOR_PRINT_FNS("guest usr", overhead_guest_us),
411 	HPP__COLOR_ACC_PRINT_FNS("Children", overhead_acc),
412 	HPP__PRINT_FNS("Samples", samples),
413 	HPP__PRINT_FNS("Period", period)
414 };
415 
416 LIST_HEAD(perf_hpp__list);
417 LIST_HEAD(perf_hpp__sort_list);
418 
419 
420 #undef HPP__COLOR_PRINT_FNS
421 #undef HPP__COLOR_ACC_PRINT_FNS
422 #undef HPP__PRINT_FNS
423 
424 #undef HPP_PERCENT_FNS
425 #undef HPP_PERCENT_ACC_FNS
426 #undef HPP_RAW_FNS
427 
428 #undef __HPP_HEADER_FN
429 #undef __HPP_WIDTH_FN
430 #undef __HPP_COLOR_PERCENT_FN
431 #undef __HPP_ENTRY_PERCENT_FN
432 #undef __HPP_COLOR_ACC_PERCENT_FN
433 #undef __HPP_ENTRY_ACC_PERCENT_FN
434 #undef __HPP_ENTRY_RAW_FN
435 #undef __HPP_SORT_FN
436 #undef __HPP_SORT_ACC_FN
437 #undef __HPP_SORT_RAW_FN
438 
439 
440 void perf_hpp__init(void)
441 {
442 	struct list_head *list;
443 	int i;
444 
445 	for (i = 0; i < PERF_HPP__MAX_INDEX; i++) {
446 		struct perf_hpp_fmt *fmt = &perf_hpp__format[i];
447 
448 		INIT_LIST_HEAD(&fmt->list);
449 
450 		/* sort_list may be linked by setup_sorting() */
451 		if (fmt->sort_list.next == NULL)
452 			INIT_LIST_HEAD(&fmt->sort_list);
453 	}
454 
455 	/*
456 	 * If user specified field order, no need to setup default fields.
457 	 */
458 	if (is_strict_order(field_order))
459 		return;
460 
461 	if (symbol_conf.cumulate_callchain) {
462 		perf_hpp__column_enable(PERF_HPP__OVERHEAD_ACC);
463 		perf_hpp__format[PERF_HPP__OVERHEAD].name = "Self";
464 	}
465 
466 	perf_hpp__column_enable(PERF_HPP__OVERHEAD);
467 
468 	if (symbol_conf.show_cpu_utilization) {
469 		perf_hpp__column_enable(PERF_HPP__OVERHEAD_SYS);
470 		perf_hpp__column_enable(PERF_HPP__OVERHEAD_US);
471 
472 		if (perf_guest) {
473 			perf_hpp__column_enable(PERF_HPP__OVERHEAD_GUEST_SYS);
474 			perf_hpp__column_enable(PERF_HPP__OVERHEAD_GUEST_US);
475 		}
476 	}
477 
478 	if (symbol_conf.show_nr_samples)
479 		perf_hpp__column_enable(PERF_HPP__SAMPLES);
480 
481 	if (symbol_conf.show_total_period)
482 		perf_hpp__column_enable(PERF_HPP__PERIOD);
483 
484 	/* prepend overhead field for backward compatiblity.  */
485 	list = &perf_hpp__format[PERF_HPP__OVERHEAD].sort_list;
486 	if (list_empty(list))
487 		list_add(list, &perf_hpp__sort_list);
488 
489 	if (symbol_conf.cumulate_callchain) {
490 		list = &perf_hpp__format[PERF_HPP__OVERHEAD_ACC].sort_list;
491 		if (list_empty(list))
492 			list_add(list, &perf_hpp__sort_list);
493 	}
494 }
495 
496 void perf_hpp__column_register(struct perf_hpp_fmt *format)
497 {
498 	list_add_tail(&format->list, &perf_hpp__list);
499 }
500 
501 void perf_hpp__column_unregister(struct perf_hpp_fmt *format)
502 {
503 	list_del(&format->list);
504 }
505 
506 void perf_hpp__register_sort_field(struct perf_hpp_fmt *format)
507 {
508 	list_add_tail(&format->sort_list, &perf_hpp__sort_list);
509 }
510 
511 void perf_hpp__column_enable(unsigned col)
512 {
513 	BUG_ON(col >= PERF_HPP__MAX_INDEX);
514 	perf_hpp__column_register(&perf_hpp__format[col]);
515 }
516 
517 void perf_hpp__column_disable(unsigned col)
518 {
519 	BUG_ON(col >= PERF_HPP__MAX_INDEX);
520 	perf_hpp__column_unregister(&perf_hpp__format[col]);
521 }
522 
523 void perf_hpp__cancel_cumulate(void)
524 {
525 	if (is_strict_order(field_order))
526 		return;
527 
528 	perf_hpp__column_disable(PERF_HPP__OVERHEAD_ACC);
529 	perf_hpp__format[PERF_HPP__OVERHEAD].name = "Overhead";
530 }
531 
532 void perf_hpp__setup_output_field(void)
533 {
534 	struct perf_hpp_fmt *fmt;
535 
536 	/* append sort keys to output field */
537 	perf_hpp__for_each_sort_list(fmt) {
538 		if (!list_empty(&fmt->list))
539 			continue;
540 
541 		/*
542 		 * sort entry fields are dynamically created,
543 		 * so they can share a same sort key even though
544 		 * the list is empty.
545 		 */
546 		if (perf_hpp__is_sort_entry(fmt)) {
547 			struct perf_hpp_fmt *pos;
548 
549 			perf_hpp__for_each_format(pos) {
550 				if (perf_hpp__same_sort_entry(pos, fmt))
551 					goto next;
552 			}
553 		}
554 
555 		perf_hpp__column_register(fmt);
556 next:
557 		continue;
558 	}
559 }
560 
561 void perf_hpp__append_sort_keys(void)
562 {
563 	struct perf_hpp_fmt *fmt;
564 
565 	/* append output fields to sort keys */
566 	perf_hpp__for_each_format(fmt) {
567 		if (!list_empty(&fmt->sort_list))
568 			continue;
569 
570 		/*
571 		 * sort entry fields are dynamically created,
572 		 * so they can share a same sort key even though
573 		 * the list is empty.
574 		 */
575 		if (perf_hpp__is_sort_entry(fmt)) {
576 			struct perf_hpp_fmt *pos;
577 
578 			perf_hpp__for_each_sort_list(pos) {
579 				if (perf_hpp__same_sort_entry(pos, fmt))
580 					goto next;
581 			}
582 		}
583 
584 		perf_hpp__register_sort_field(fmt);
585 next:
586 		continue;
587 	}
588 }
589 
590 void perf_hpp__reset_output_field(void)
591 {
592 	struct perf_hpp_fmt *fmt, *tmp;
593 
594 	/* reset output fields */
595 	perf_hpp__for_each_format_safe(fmt, tmp) {
596 		list_del_init(&fmt->list);
597 		list_del_init(&fmt->sort_list);
598 	}
599 
600 	/* reset sort keys */
601 	perf_hpp__for_each_sort_list_safe(fmt, tmp) {
602 		list_del_init(&fmt->list);
603 		list_del_init(&fmt->sort_list);
604 	}
605 }
606 
607 /*
608  * See hists__fprintf to match the column widths
609  */
610 unsigned int hists__sort_list_width(struct hists *hists)
611 {
612 	struct perf_hpp_fmt *fmt;
613 	int ret = 0;
614 	bool first = true;
615 	struct perf_hpp dummy_hpp;
616 
617 	perf_hpp__for_each_format(fmt) {
618 		if (perf_hpp__should_skip(fmt))
619 			continue;
620 
621 		if (first)
622 			first = false;
623 		else
624 			ret += 2;
625 
626 		ret += fmt->width(fmt, &dummy_hpp, hists_to_evsel(hists));
627 	}
628 
629 	if (verbose && sort__has_sym) /* Addr + origin */
630 		ret += 3 + BITS_PER_LONG / 4;
631 
632 	return ret;
633 }
634 
635 void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists)
636 {
637 	int idx;
638 
639 	if (perf_hpp__is_sort_entry(fmt))
640 		return perf_hpp__reset_sort_width(fmt, hists);
641 
642 	for (idx = 0; idx < PERF_HPP__MAX_INDEX; idx++) {
643 		if (fmt == &perf_hpp__format[idx])
644 			break;
645 	}
646 
647 	if (idx == PERF_HPP__MAX_INDEX)
648 		return;
649 
650 	switch (idx) {
651 	case PERF_HPP__OVERHEAD:
652 	case PERF_HPP__OVERHEAD_SYS:
653 	case PERF_HPP__OVERHEAD_US:
654 	case PERF_HPP__OVERHEAD_ACC:
655 		fmt->len = 8;
656 		break;
657 
658 	case PERF_HPP__OVERHEAD_GUEST_SYS:
659 	case PERF_HPP__OVERHEAD_GUEST_US:
660 		fmt->len = 9;
661 		break;
662 
663 	case PERF_HPP__SAMPLES:
664 	case PERF_HPP__PERIOD:
665 		fmt->len = 12;
666 		break;
667 
668 	default:
669 		break;
670 	}
671 }
672 
673 void perf_hpp__set_user_width(const char *width_list_str)
674 {
675 	struct perf_hpp_fmt *fmt;
676 	const char *ptr = width_list_str;
677 
678 	perf_hpp__for_each_format(fmt) {
679 		char *p;
680 
681 		int len = strtol(ptr, &p, 10);
682 		fmt->user_len = len;
683 
684 		if (*p == ',')
685 			ptr = p + 1;
686 		else
687 			break;
688 	}
689 }
690