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7
8#include "builtin.h"
9
10#include "util/debug.h"
11#include "util/event.h"
12#include "util/hist.h"
13#include "util/evsel.h"
14#include "util/evlist.h"
15#include "util/session.h"
16#include "util/tool.h"
17#include "util/sort.h"
18#include "util/symbol.h"
19#include "util/data.h"
20#include "util/config.h"
21#include "util/time-utils.h"
22#include "util/annotate.h"
23#include "util/map.h"
24#include <linux/zalloc.h>
25
26#include <errno.h>
27#include <inttypes.h>
28#include <stdlib.h>
29#include <math.h>
30
31struct perf_diff {
32 struct perf_tool tool;
33 const char *time_str;
34 struct perf_time_interval *ptime_range;
35 int range_size;
36 int range_num;
37 bool has_br_stack;
38};
39
40
41enum {
42 PERF_HPP_DIFF__BASELINE,
43 PERF_HPP_DIFF__PERIOD,
44 PERF_HPP_DIFF__PERIOD_BASELINE,
45 PERF_HPP_DIFF__DELTA,
46 PERF_HPP_DIFF__RATIO,
47 PERF_HPP_DIFF__WEIGHTED_DIFF,
48 PERF_HPP_DIFF__FORMULA,
49 PERF_HPP_DIFF__DELTA_ABS,
50 PERF_HPP_DIFF__CYCLES,
51
52 PERF_HPP_DIFF__MAX_INDEX
53};
54
55struct diff_hpp_fmt {
56 struct perf_hpp_fmt fmt;
57 int idx;
58 char *header;
59 int header_width;
60};
61
62struct data__file {
63 struct perf_session *session;
64 struct perf_data data;
65 int idx;
66 struct hists *hists;
67 struct diff_hpp_fmt fmt[PERF_HPP_DIFF__MAX_INDEX];
68};
69
70static struct data__file *data__files;
71static int data__files_cnt;
72
73#define data__for_each_file_start(i, d, s) \
74 for (i = s, d = &data__files[s]; \
75 i < data__files_cnt; \
76 i++, d = &data__files[i])
77
78#define data__for_each_file(i, d) data__for_each_file_start(i, d, 0)
79#define data__for_each_file_new(i, d) data__for_each_file_start(i, d, 1)
80
81static bool force;
82static bool show_period;
83static bool show_formula;
84static bool show_baseline_only;
85static unsigned int sort_compute = 1;
86
87static s64 compute_wdiff_w1;
88static s64 compute_wdiff_w2;
89
90static const char *cpu_list;
91static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
92
93static struct addr_location dummy_al;
94
95enum {
96 COMPUTE_DELTA,
97 COMPUTE_RATIO,
98 COMPUTE_WEIGHTED_DIFF,
99 COMPUTE_DELTA_ABS,
100 COMPUTE_CYCLES,
101 COMPUTE_MAX,
102};
103
104const char *compute_names[COMPUTE_MAX] = {
105 [COMPUTE_DELTA] = "delta",
106 [COMPUTE_DELTA_ABS] = "delta-abs",
107 [COMPUTE_RATIO] = "ratio",
108 [COMPUTE_WEIGHTED_DIFF] = "wdiff",
109 [COMPUTE_CYCLES] = "cycles",
110};
111
112static int compute = COMPUTE_DELTA_ABS;
113
114static int compute_2_hpp[COMPUTE_MAX] = {
115 [COMPUTE_DELTA] = PERF_HPP_DIFF__DELTA,
116 [COMPUTE_DELTA_ABS] = PERF_HPP_DIFF__DELTA_ABS,
117 [COMPUTE_RATIO] = PERF_HPP_DIFF__RATIO,
118 [COMPUTE_WEIGHTED_DIFF] = PERF_HPP_DIFF__WEIGHTED_DIFF,
119 [COMPUTE_CYCLES] = PERF_HPP_DIFF__CYCLES,
120};
121
122#define MAX_COL_WIDTH 70
123
124static struct header_column {
125 const char *name;
126 int width;
127} columns[PERF_HPP_DIFF__MAX_INDEX] = {
128 [PERF_HPP_DIFF__BASELINE] = {
129 .name = "Baseline",
130 },
131 [PERF_HPP_DIFF__PERIOD] = {
132 .name = "Period",
133 .width = 14,
134 },
135 [PERF_HPP_DIFF__PERIOD_BASELINE] = {
136 .name = "Base period",
137 .width = 14,
138 },
139 [PERF_HPP_DIFF__DELTA] = {
140 .name = "Delta",
141 .width = 7,
142 },
143 [PERF_HPP_DIFF__DELTA_ABS] = {
144 .name = "Delta Abs",
145 .width = 7,
146 },
147 [PERF_HPP_DIFF__RATIO] = {
148 .name = "Ratio",
149 .width = 14,
150 },
151 [PERF_HPP_DIFF__WEIGHTED_DIFF] = {
152 .name = "Weighted diff",
153 .width = 14,
154 },
155 [PERF_HPP_DIFF__FORMULA] = {
156 .name = "Formula",
157 .width = MAX_COL_WIDTH,
158 },
159 [PERF_HPP_DIFF__CYCLES] = {
160 .name = "[Program Block Range] Cycles Diff",
161 .width = 70,
162 }
163};
164
165static int setup_compute_opt_wdiff(char *opt)
166{
167 char *w1_str = opt;
168 char *w2_str;
169
170 int ret = -EINVAL;
171
172 if (!opt)
173 goto out;
174
175 w2_str = strchr(opt, ',');
176 if (!w2_str)
177 goto out;
178
179 *w2_str++ = 0x0;
180 if (!*w2_str)
181 goto out;
182
183 compute_wdiff_w1 = strtol(w1_str, NULL, 10);
184 compute_wdiff_w2 = strtol(w2_str, NULL, 10);
185
186 if (!compute_wdiff_w1 || !compute_wdiff_w2)
187 goto out;
188
189 pr_debug("compute wdiff w1(%" PRId64 ") w2(%" PRId64 ")\n",
190 compute_wdiff_w1, compute_wdiff_w2);
191
192 ret = 0;
193
194 out:
195 if (ret)
196 pr_err("Failed: wrong weight data, use 'wdiff:w1,w2'\n");
197
198 return ret;
199}
200
201static int setup_compute_opt(char *opt)
202{
203 if (compute == COMPUTE_WEIGHTED_DIFF)
204 return setup_compute_opt_wdiff(opt);
205
206 if (opt) {
207 pr_err("Failed: extra option specified '%s'", opt);
208 return -EINVAL;
209 }
210
211 return 0;
212}
213
214static int setup_compute(const struct option *opt, const char *str,
215 int unset __maybe_unused)
216{
217 int *cp = (int *) opt->value;
218 char *cstr = (char *) str;
219 char buf[50];
220 unsigned i;
221 char *option;
222
223 if (!str) {
224 *cp = COMPUTE_DELTA;
225 return 0;
226 }
227
228 option = strchr(str, ':');
229 if (option) {
230 unsigned len = option++ - str;
231
232
233
234
235
236
237
238 if (len >= sizeof(buf))
239 return -EINVAL;
240
241 strncpy(buf, str, len);
242 buf[len] = 0x0;
243 cstr = buf;
244 }
245
246 for (i = 0; i < COMPUTE_MAX; i++)
247 if (!strcmp(cstr, compute_names[i])) {
248 *cp = i;
249 return setup_compute_opt(option);
250 }
251
252 pr_err("Failed: '%s' is not computation method "
253 "(use 'delta','ratio' or 'wdiff')\n", str);
254 return -EINVAL;
255}
256
257static double period_percent(struct hist_entry *he, u64 period)
258{
259 u64 total = hists__total_period(he->hists);
260
261 return (period * 100.0) / total;
262}
263
264static double compute_delta(struct hist_entry *he, struct hist_entry *pair)
265{
266 double old_percent = period_percent(he, he->stat.period);
267 double new_percent = period_percent(pair, pair->stat.period);
268
269 pair->diff.period_ratio_delta = new_percent - old_percent;
270 pair->diff.computed = true;
271 return pair->diff.period_ratio_delta;
272}
273
274static double compute_ratio(struct hist_entry *he, struct hist_entry *pair)
275{
276 double old_period = he->stat.period ?: 1;
277 double new_period = pair->stat.period;
278
279 pair->diff.computed = true;
280 pair->diff.period_ratio = new_period / old_period;
281 return pair->diff.period_ratio;
282}
283
284static s64 compute_wdiff(struct hist_entry *he, struct hist_entry *pair)
285{
286 u64 old_period = he->stat.period;
287 u64 new_period = pair->stat.period;
288
289 pair->diff.computed = true;
290 pair->diff.wdiff = new_period * compute_wdiff_w2 -
291 old_period * compute_wdiff_w1;
292
293 return pair->diff.wdiff;
294}
295
296static int formula_delta(struct hist_entry *he, struct hist_entry *pair,
297 char *buf, size_t size)
298{
299 u64 he_total = he->hists->stats.total_period;
300 u64 pair_total = pair->hists->stats.total_period;
301
302 if (symbol_conf.filter_relative) {
303 he_total = he->hists->stats.total_non_filtered_period;
304 pair_total = pair->hists->stats.total_non_filtered_period;
305 }
306 return scnprintf(buf, size,
307 "(%" PRIu64 " * 100 / %" PRIu64 ") - "
308 "(%" PRIu64 " * 100 / %" PRIu64 ")",
309 pair->stat.period, pair_total,
310 he->stat.period, he_total);
311}
312
313static int formula_ratio(struct hist_entry *he, struct hist_entry *pair,
314 char *buf, size_t size)
315{
316 double old_period = he->stat.period;
317 double new_period = pair->stat.period;
318
319 return scnprintf(buf, size, "%.0F / %.0F", new_period, old_period);
320}
321
322static int formula_wdiff(struct hist_entry *he, struct hist_entry *pair,
323 char *buf, size_t size)
324{
325 u64 old_period = he->stat.period;
326 u64 new_period = pair->stat.period;
327
328 return scnprintf(buf, size,
329 "(%" PRIu64 " * " "%" PRId64 ") - (%" PRIu64 " * " "%" PRId64 ")",
330 new_period, compute_wdiff_w2, old_period, compute_wdiff_w1);
331}
332
333static int formula_fprintf(struct hist_entry *he, struct hist_entry *pair,
334 char *buf, size_t size)
335{
336 switch (compute) {
337 case COMPUTE_DELTA:
338 case COMPUTE_DELTA_ABS:
339 return formula_delta(he, pair, buf, size);
340 case COMPUTE_RATIO:
341 return formula_ratio(he, pair, buf, size);
342 case COMPUTE_WEIGHTED_DIFF:
343 return formula_wdiff(he, pair, buf, size);
344 default:
345 BUG_ON(1);
346 }
347
348 return -1;
349}
350
351static void *block_hist_zalloc(size_t size)
352{
353 struct block_hist *bh;
354
355 bh = zalloc(size + sizeof(*bh));
356 if (!bh)
357 return NULL;
358
359 return &bh->he;
360}
361
362static void block_hist_free(void *he)
363{
364 struct block_hist *bh;
365
366 bh = container_of(he, struct block_hist, he);
367 hists__delete_entries(&bh->block_hists);
368 free(bh);
369}
370
371struct hist_entry_ops block_hist_ops = {
372 .new = block_hist_zalloc,
373 .free = block_hist_free,
374};
375
376static int diff__process_sample_event(struct perf_tool *tool,
377 union perf_event *event,
378 struct perf_sample *sample,
379 struct perf_evsel *evsel,
380 struct machine *machine)
381{
382 struct perf_diff *pdiff = container_of(tool, struct perf_diff, tool);
383 struct addr_location al;
384 struct hists *hists = evsel__hists(evsel);
385 int ret = -1;
386
387 if (perf_time__ranges_skip_sample(pdiff->ptime_range, pdiff->range_num,
388 sample->time)) {
389 return 0;
390 }
391
392 if (machine__resolve(machine, &al, sample) < 0) {
393 pr_warning("problem processing %d event, skipping it.\n",
394 event->header.type);
395 return -1;
396 }
397
398 if (cpu_list && !test_bit(sample->cpu, cpu_bitmap)) {
399 ret = 0;
400 goto out_put;
401 }
402
403 if (compute != COMPUTE_CYCLES) {
404 if (!hists__add_entry(hists, &al, NULL, NULL, NULL, sample,
405 true)) {
406 pr_warning("problem incrementing symbol period, "
407 "skipping event\n");
408 goto out_put;
409 }
410 } else {
411 if (!hists__add_entry_ops(hists, &block_hist_ops, &al, NULL,
412 NULL, NULL, sample, true)) {
413 pr_warning("problem incrementing symbol period, "
414 "skipping event\n");
415 goto out_put;
416 }
417
418 hist__account_cycles(sample->branch_stack, &al, sample, false);
419 }
420
421
422
423
424
425
426
427 hists->stats.total_period += sample->period;
428 if (!al.filtered)
429 hists->stats.total_non_filtered_period += sample->period;
430 ret = 0;
431out_put:
432 addr_location__put(&al);
433 return ret;
434}
435
436static struct perf_diff pdiff = {
437 .tool = {
438 .sample = diff__process_sample_event,
439 .mmap = perf_event__process_mmap,
440 .mmap2 = perf_event__process_mmap2,
441 .comm = perf_event__process_comm,
442 .exit = perf_event__process_exit,
443 .fork = perf_event__process_fork,
444 .lost = perf_event__process_lost,
445 .namespaces = perf_event__process_namespaces,
446 .ordered_events = true,
447 .ordering_requires_timestamps = true,
448 },
449};
450
451static struct perf_evsel *evsel_match(struct perf_evsel *evsel,
452 struct perf_evlist *evlist)
453{
454 struct perf_evsel *e;
455
456 evlist__for_each_entry(evlist, e) {
457 if (perf_evsel__match2(evsel, e))
458 return e;
459 }
460
461 return NULL;
462}
463
464static void perf_evlist__collapse_resort(struct perf_evlist *evlist)
465{
466 struct perf_evsel *evsel;
467
468 evlist__for_each_entry(evlist, evsel) {
469 struct hists *hists = evsel__hists(evsel);
470
471 hists__collapse_resort(hists, NULL);
472 }
473}
474
475static struct data__file *fmt_to_data_file(struct perf_hpp_fmt *fmt)
476{
477 struct diff_hpp_fmt *dfmt = container_of(fmt, struct diff_hpp_fmt, fmt);
478 void *ptr = dfmt - dfmt->idx;
479 struct data__file *d = container_of(ptr, struct data__file, fmt);
480
481 return d;
482}
483
484static struct hist_entry*
485get_pair_data(struct hist_entry *he, struct data__file *d)
486{
487 if (hist_entry__has_pairs(he)) {
488 struct hist_entry *pair;
489
490 list_for_each_entry(pair, &he->pairs.head, pairs.node)
491 if (pair->hists == d->hists)
492 return pair;
493 }
494
495 return NULL;
496}
497
498static struct hist_entry*
499get_pair_fmt(struct hist_entry *he, struct diff_hpp_fmt *dfmt)
500{
501 struct data__file *d = fmt_to_data_file(&dfmt->fmt);
502
503 return get_pair_data(he, d);
504}
505
506static void hists__baseline_only(struct hists *hists)
507{
508 struct rb_root_cached *root;
509 struct rb_node *next;
510
511 if (hists__has(hists, need_collapse))
512 root = &hists->entries_collapsed;
513 else
514 root = hists->entries_in;
515
516 next = rb_first_cached(root);
517 while (next != NULL) {
518 struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node_in);
519
520 next = rb_next(&he->rb_node_in);
521 if (!hist_entry__next_pair(he)) {
522 rb_erase_cached(&he->rb_node_in, root);
523 hist_entry__delete(he);
524 }
525 }
526}
527
528static int64_t block_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
529 struct hist_entry *left, struct hist_entry *right)
530{
531 struct block_info *bi_l = left->block_info;
532 struct block_info *bi_r = right->block_info;
533 int cmp;
534
535 if (!bi_l->sym || !bi_r->sym) {
536 if (!bi_l->sym && !bi_r->sym)
537 return 0;
538 else if (!bi_l->sym)
539 return -1;
540 else
541 return 1;
542 }
543
544 if (bi_l->sym == bi_r->sym) {
545 if (bi_l->start == bi_r->start) {
546 if (bi_l->end == bi_r->end)
547 return 0;
548 else
549 return (int64_t)(bi_r->end - bi_l->end);
550 } else
551 return (int64_t)(bi_r->start - bi_l->start);
552 } else {
553 cmp = strcmp(bi_l->sym->name, bi_r->sym->name);
554 return cmp;
555 }
556
557 if (bi_l->sym->start != bi_r->sym->start)
558 return (int64_t)(bi_r->sym->start - bi_l->sym->start);
559
560 return (int64_t)(bi_r->sym->end - bi_l->sym->end);
561}
562
563static int64_t block_cycles_diff_cmp(struct hist_entry *left,
564 struct hist_entry *right)
565{
566 bool pairs_left = hist_entry__has_pairs(left);
567 bool pairs_right = hist_entry__has_pairs(right);
568 s64 l, r;
569
570 if (!pairs_left && !pairs_right)
571 return 0;
572
573 l = labs(left->diff.cycles);
574 r = labs(right->diff.cycles);
575 return r - l;
576}
577
578static int64_t block_sort(struct perf_hpp_fmt *fmt __maybe_unused,
579 struct hist_entry *left, struct hist_entry *right)
580{
581 return block_cycles_diff_cmp(right, left);
582}
583
584static void init_block_hist(struct block_hist *bh)
585{
586 __hists__init(&bh->block_hists, &bh->block_list);
587 perf_hpp_list__init(&bh->block_list);
588
589 INIT_LIST_HEAD(&bh->block_fmt.list);
590 INIT_LIST_HEAD(&bh->block_fmt.sort_list);
591 bh->block_fmt.cmp = block_cmp;
592 bh->block_fmt.sort = block_sort;
593 perf_hpp_list__register_sort_field(&bh->block_list,
594 &bh->block_fmt);
595 bh->valid = true;
596}
597
598static void init_block_info(struct block_info *bi, struct symbol *sym,
599 struct cyc_hist *ch, int offset)
600{
601 bi->sym = sym;
602 bi->start = ch->start;
603 bi->end = offset;
604 bi->cycles = ch->cycles;
605 bi->cycles_aggr = ch->cycles_aggr;
606 bi->num = ch->num;
607 bi->num_aggr = ch->num_aggr;
608}
609
610static int process_block_per_sym(struct hist_entry *he)
611{
612 struct annotation *notes;
613 struct cyc_hist *ch;
614 struct block_hist *bh;
615
616 if (!he->ms.map || !he->ms.sym)
617 return 0;
618
619 notes = symbol__annotation(he->ms.sym);
620 if (!notes || !notes->src || !notes->src->cycles_hist)
621 return 0;
622
623 bh = container_of(he, struct block_hist, he);
624 init_block_hist(bh);
625
626 ch = notes->src->cycles_hist;
627 for (unsigned int i = 0; i < symbol__size(he->ms.sym); i++) {
628 if (ch[i].num_aggr) {
629 struct block_info *bi;
630 struct hist_entry *he_block;
631
632 bi = block_info__new();
633 if (!bi)
634 return -1;
635
636 init_block_info(bi, he->ms.sym, &ch[i], i);
637 he_block = hists__add_entry_block(&bh->block_hists,
638 &dummy_al, bi);
639 if (!he_block) {
640 block_info__put(bi);
641 return -1;
642 }
643 }
644 }
645
646 return 0;
647}
648
649static int block_pair_cmp(struct hist_entry *a, struct hist_entry *b)
650{
651 struct block_info *bi_a = a->block_info;
652 struct block_info *bi_b = b->block_info;
653 int cmp;
654
655 if (!bi_a->sym || !bi_b->sym)
656 return -1;
657
658 cmp = strcmp(bi_a->sym->name, bi_b->sym->name);
659
660 if ((!cmp) && (bi_a->start == bi_b->start) && (bi_a->end == bi_b->end))
661 return 0;
662
663 return -1;
664}
665
666static struct hist_entry *get_block_pair(struct hist_entry *he,
667 struct hists *hists_pair)
668{
669 struct rb_root_cached *root = hists_pair->entries_in;
670 struct rb_node *next = rb_first_cached(root);
671 int cmp;
672
673 while (next != NULL) {
674 struct hist_entry *he_pair = rb_entry(next, struct hist_entry,
675 rb_node_in);
676
677 next = rb_next(&he_pair->rb_node_in);
678
679 cmp = block_pair_cmp(he_pair, he);
680 if (!cmp)
681 return he_pair;
682 }
683
684 return NULL;
685}
686
687static void compute_cycles_diff(struct hist_entry *he,
688 struct hist_entry *pair)
689{
690 pair->diff.computed = true;
691 if (pair->block_info->num && he->block_info->num) {
692 pair->diff.cycles =
693 pair->block_info->cycles_aggr / pair->block_info->num_aggr -
694 he->block_info->cycles_aggr / he->block_info->num_aggr;
695 }
696}
697
698static void block_hists_match(struct hists *hists_base,
699 struct hists *hists_pair)
700{
701 struct rb_root_cached *root = hists_base->entries_in;
702 struct rb_node *next = rb_first_cached(root);
703
704 while (next != NULL) {
705 struct hist_entry *he = rb_entry(next, struct hist_entry,
706 rb_node_in);
707 struct hist_entry *pair = get_block_pair(he, hists_pair);
708
709 next = rb_next(&he->rb_node_in);
710
711 if (pair) {
712 hist_entry__add_pair(pair, he);
713 compute_cycles_diff(he, pair);
714 }
715 }
716}
717
718static int filter_cb(struct hist_entry *he, void *arg __maybe_unused)
719{
720
721 he->filtered = true;
722 return 0;
723}
724
725static void hists__precompute(struct hists *hists)
726{
727 struct rb_root_cached *root;
728 struct rb_node *next;
729
730 if (hists__has(hists, need_collapse))
731 root = &hists->entries_collapsed;
732 else
733 root = hists->entries_in;
734
735 next = rb_first_cached(root);
736 while (next != NULL) {
737 struct block_hist *bh, *pair_bh;
738 struct hist_entry *he, *pair;
739 struct data__file *d;
740 int i;
741
742 he = rb_entry(next, struct hist_entry, rb_node_in);
743 next = rb_next(&he->rb_node_in);
744
745 if (compute == COMPUTE_CYCLES)
746 process_block_per_sym(he);
747
748 data__for_each_file_new(i, d) {
749 pair = get_pair_data(he, d);
750 if (!pair)
751 continue;
752
753 switch (compute) {
754 case COMPUTE_DELTA:
755 case COMPUTE_DELTA_ABS:
756 compute_delta(he, pair);
757 break;
758 case COMPUTE_RATIO:
759 compute_ratio(he, pair);
760 break;
761 case COMPUTE_WEIGHTED_DIFF:
762 compute_wdiff(he, pair);
763 break;
764 case COMPUTE_CYCLES:
765 process_block_per_sym(pair);
766 bh = container_of(he, struct block_hist, he);
767 pair_bh = container_of(pair, struct block_hist,
768 he);
769
770 if (bh->valid && pair_bh->valid) {
771 block_hists_match(&bh->block_hists,
772 &pair_bh->block_hists);
773 hists__output_resort_cb(&pair_bh->block_hists,
774 NULL, filter_cb);
775 }
776 break;
777 default:
778 BUG_ON(1);
779 }
780 }
781 }
782}
783
784static int64_t cmp_doubles(double l, double r)
785{
786 if (l > r)
787 return -1;
788 else if (l < r)
789 return 1;
790 else
791 return 0;
792}
793
794static int64_t
795__hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
796 int c)
797{
798 switch (c) {
799 case COMPUTE_DELTA:
800 {
801 double l = left->diff.period_ratio_delta;
802 double r = right->diff.period_ratio_delta;
803
804 return cmp_doubles(l, r);
805 }
806 case COMPUTE_DELTA_ABS:
807 {
808 double l = fabs(left->diff.period_ratio_delta);
809 double r = fabs(right->diff.period_ratio_delta);
810
811 return cmp_doubles(l, r);
812 }
813 case COMPUTE_RATIO:
814 {
815 double l = left->diff.period_ratio;
816 double r = right->diff.period_ratio;
817
818 return cmp_doubles(l, r);
819 }
820 case COMPUTE_WEIGHTED_DIFF:
821 {
822 s64 l = left->diff.wdiff;
823 s64 r = right->diff.wdiff;
824
825 return r - l;
826 }
827 default:
828 BUG_ON(1);
829 }
830
831 return 0;
832}
833
834static int64_t
835hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
836 int c, int sort_idx)
837{
838 bool pairs_left = hist_entry__has_pairs(left);
839 bool pairs_right = hist_entry__has_pairs(right);
840 struct hist_entry *p_right, *p_left;
841
842 if (!pairs_left && !pairs_right)
843 return 0;
844
845 if (!pairs_left || !pairs_right)
846 return pairs_left ? -1 : 1;
847
848 p_left = get_pair_data(left, &data__files[sort_idx]);
849 p_right = get_pair_data(right, &data__files[sort_idx]);
850
851 if (!p_left && !p_right)
852 return 0;
853
854 if (!p_left || !p_right)
855 return p_left ? -1 : 1;
856
857
858
859
860
861 return __hist_entry__cmp_compute(p_left, p_right, c);
862}
863
864static int64_t
865hist_entry__cmp_compute_idx(struct hist_entry *left, struct hist_entry *right,
866 int c, int sort_idx)
867{
868 struct hist_entry *p_right, *p_left;
869
870 p_left = get_pair_data(left, &data__files[sort_idx]);
871 p_right = get_pair_data(right, &data__files[sort_idx]);
872
873 if (!p_left && !p_right)
874 return 0;
875
876 if (!p_left || !p_right)
877 return p_left ? -1 : 1;
878
879 if (c != COMPUTE_DELTA && c != COMPUTE_DELTA_ABS) {
880
881
882
883
884
885 if (left->dummy && right->dummy)
886 return 0;
887
888 if (left->dummy || right->dummy)
889 return left->dummy ? 1 : -1;
890 }
891
892 return __hist_entry__cmp_compute(p_left, p_right, c);
893}
894
895static int64_t
896hist_entry__cmp_nop(struct perf_hpp_fmt *fmt __maybe_unused,
897 struct hist_entry *left __maybe_unused,
898 struct hist_entry *right __maybe_unused)
899{
900 return 0;
901}
902
903static int64_t
904hist_entry__cmp_baseline(struct perf_hpp_fmt *fmt __maybe_unused,
905 struct hist_entry *left, struct hist_entry *right)
906{
907 if (left->stat.period == right->stat.period)
908 return 0;
909 return left->stat.period > right->stat.period ? 1 : -1;
910}
911
912static int64_t
913hist_entry__cmp_delta(struct perf_hpp_fmt *fmt,
914 struct hist_entry *left, struct hist_entry *right)
915{
916 struct data__file *d = fmt_to_data_file(fmt);
917
918 return hist_entry__cmp_compute(right, left, COMPUTE_DELTA, d->idx);
919}
920
921static int64_t
922hist_entry__cmp_delta_abs(struct perf_hpp_fmt *fmt,
923 struct hist_entry *left, struct hist_entry *right)
924{
925 struct data__file *d = fmt_to_data_file(fmt);
926
927 return hist_entry__cmp_compute(right, left, COMPUTE_DELTA_ABS, d->idx);
928}
929
930static int64_t
931hist_entry__cmp_ratio(struct perf_hpp_fmt *fmt,
932 struct hist_entry *left, struct hist_entry *right)
933{
934 struct data__file *d = fmt_to_data_file(fmt);
935
936 return hist_entry__cmp_compute(right, left, COMPUTE_RATIO, d->idx);
937}
938
939static int64_t
940hist_entry__cmp_wdiff(struct perf_hpp_fmt *fmt,
941 struct hist_entry *left, struct hist_entry *right)
942{
943 struct data__file *d = fmt_to_data_file(fmt);
944
945 return hist_entry__cmp_compute(right, left, COMPUTE_WEIGHTED_DIFF, d->idx);
946}
947
948static int64_t
949hist_entry__cmp_delta_idx(struct perf_hpp_fmt *fmt __maybe_unused,
950 struct hist_entry *left, struct hist_entry *right)
951{
952 return hist_entry__cmp_compute_idx(right, left, COMPUTE_DELTA,
953 sort_compute);
954}
955
956static int64_t
957hist_entry__cmp_delta_abs_idx(struct perf_hpp_fmt *fmt __maybe_unused,
958 struct hist_entry *left, struct hist_entry *right)
959{
960 return hist_entry__cmp_compute_idx(right, left, COMPUTE_DELTA_ABS,
961 sort_compute);
962}
963
964static int64_t
965hist_entry__cmp_ratio_idx(struct perf_hpp_fmt *fmt __maybe_unused,
966 struct hist_entry *left, struct hist_entry *right)
967{
968 return hist_entry__cmp_compute_idx(right, left, COMPUTE_RATIO,
969 sort_compute);
970}
971
972static int64_t
973hist_entry__cmp_wdiff_idx(struct perf_hpp_fmt *fmt __maybe_unused,
974 struct hist_entry *left, struct hist_entry *right)
975{
976 return hist_entry__cmp_compute_idx(right, left, COMPUTE_WEIGHTED_DIFF,
977 sort_compute);
978}
979
980static void hists__process(struct hists *hists)
981{
982 if (show_baseline_only)
983 hists__baseline_only(hists);
984
985 hists__precompute(hists);
986 hists__output_resort(hists, NULL);
987
988 if (compute == COMPUTE_CYCLES)
989 symbol_conf.report_block = true;
990
991 hists__fprintf(hists, !quiet, 0, 0, 0, stdout,
992 !symbol_conf.use_callchain);
993}
994
995static void data__fprintf(void)
996{
997 struct data__file *d;
998 int i;
999
1000 fprintf(stdout, "# Data files:\n");
1001
1002 data__for_each_file(i, d)
1003 fprintf(stdout, "# [%d] %s %s\n",
1004 d->idx, d->data.path,
1005 !d->idx ? "(Baseline)" : "");
1006
1007 fprintf(stdout, "#\n");
1008}
1009
1010static void data_process(void)
1011{
1012 struct perf_evlist *evlist_base = data__files[0].session->evlist;
1013 struct perf_evsel *evsel_base;
1014 bool first = true;
1015
1016 evlist__for_each_entry(evlist_base, evsel_base) {
1017 struct hists *hists_base = evsel__hists(evsel_base);
1018 struct data__file *d;
1019 int i;
1020
1021 data__for_each_file_new(i, d) {
1022 struct perf_evlist *evlist = d->session->evlist;
1023 struct perf_evsel *evsel;
1024 struct hists *hists;
1025
1026 evsel = evsel_match(evsel_base, evlist);
1027 if (!evsel)
1028 continue;
1029
1030 hists = evsel__hists(evsel);
1031 d->hists = hists;
1032
1033 hists__match(hists_base, hists);
1034
1035 if (!show_baseline_only)
1036 hists__link(hists_base, hists);
1037 }
1038
1039 if (!quiet) {
1040 fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
1041 perf_evsel__name(evsel_base));
1042 }
1043
1044 first = false;
1045
1046 if (verbose > 0 || ((data__files_cnt > 2) && !quiet))
1047 data__fprintf();
1048
1049
1050 perf_evsel__reset_sample_bit(evsel_base, CALLCHAIN);
1051
1052 hists__process(hists_base);
1053 }
1054}
1055
1056static void data__free(struct data__file *d)
1057{
1058 int col;
1059
1060 for (col = 0; col < PERF_HPP_DIFF__MAX_INDEX; col++) {
1061 struct diff_hpp_fmt *fmt = &d->fmt[col];
1062
1063 zfree(&fmt->header);
1064 }
1065}
1066
1067static int abstime_str_dup(char **pstr)
1068{
1069 char *str = NULL;
1070
1071 if (pdiff.time_str && strchr(pdiff.time_str, ':')) {
1072 str = strdup(pdiff.time_str);
1073 if (!str)
1074 return -ENOMEM;
1075 }
1076
1077 *pstr = str;
1078 return 0;
1079}
1080
1081static int parse_absolute_time(struct data__file *d, char **pstr)
1082{
1083 char *p = *pstr;
1084 int ret;
1085
1086
1087
1088
1089
1090 p = strchr(*pstr, ':');
1091 if (p) {
1092 if (p == *pstr) {
1093 pr_err("Invalid time string\n");
1094 return -EINVAL;
1095 }
1096
1097 *p = 0;
1098 p++;
1099 if (*p == 0) {
1100 pr_err("Invalid time string\n");
1101 return -EINVAL;
1102 }
1103 }
1104
1105 ret = perf_time__parse_for_ranges(*pstr, d->session,
1106 &pdiff.ptime_range,
1107 &pdiff.range_size,
1108 &pdiff.range_num);
1109 if (ret < 0)
1110 return ret;
1111
1112 if (!p || *p == 0)
1113 *pstr = NULL;
1114 else
1115 *pstr = p;
1116
1117 return ret;
1118}
1119
1120static int parse_percent_time(struct data__file *d)
1121{
1122 int ret;
1123
1124 ret = perf_time__parse_for_ranges(pdiff.time_str, d->session,
1125 &pdiff.ptime_range,
1126 &pdiff.range_size,
1127 &pdiff.range_num);
1128 return ret;
1129}
1130
1131static int parse_time_str(struct data__file *d, char *abstime_ostr,
1132 char **pabstime_tmp)
1133{
1134 int ret = 0;
1135
1136 if (abstime_ostr)
1137 ret = parse_absolute_time(d, pabstime_tmp);
1138 else if (pdiff.time_str)
1139 ret = parse_percent_time(d);
1140
1141 return ret;
1142}
1143
1144static int check_file_brstack(void)
1145{
1146 struct data__file *d;
1147 bool has_br_stack;
1148 int i;
1149
1150 data__for_each_file(i, d) {
1151 d->session = perf_session__new(&d->data, false, &pdiff.tool);
1152 if (!d->session) {
1153 pr_err("Failed to open %s\n", d->data.path);
1154 return -1;
1155 }
1156
1157 has_br_stack = perf_header__has_feat(&d->session->header,
1158 HEADER_BRANCH_STACK);
1159 perf_session__delete(d->session);
1160 if (!has_br_stack)
1161 return 0;
1162 }
1163
1164
1165 pdiff.has_br_stack = true;
1166 return 0;
1167}
1168
1169static int __cmd_diff(void)
1170{
1171 struct data__file *d;
1172 int ret, i;
1173 char *abstime_ostr, *abstime_tmp;
1174
1175 ret = abstime_str_dup(&abstime_ostr);
1176 if (ret)
1177 return ret;
1178
1179 abstime_tmp = abstime_ostr;
1180 ret = -EINVAL;
1181
1182 data__for_each_file(i, d) {
1183 d->session = perf_session__new(&d->data, false, &pdiff.tool);
1184 if (!d->session) {
1185 pr_err("Failed to open %s\n", d->data.path);
1186 ret = -1;
1187 goto out_delete;
1188 }
1189
1190 if (pdiff.time_str) {
1191 ret = parse_time_str(d, abstime_ostr, &abstime_tmp);
1192 if (ret < 0)
1193 goto out_delete;
1194 }
1195
1196 if (cpu_list) {
1197 ret = perf_session__cpu_bitmap(d->session, cpu_list,
1198 cpu_bitmap);
1199 if (ret < 0)
1200 goto out_delete;
1201 }
1202
1203 ret = perf_session__process_events(d->session);
1204 if (ret) {
1205 pr_err("Failed to process %s\n", d->data.path);
1206 goto out_delete;
1207 }
1208
1209 perf_evlist__collapse_resort(d->session->evlist);
1210
1211 if (pdiff.ptime_range)
1212 zfree(&pdiff.ptime_range);
1213 }
1214
1215 data_process();
1216
1217 out_delete:
1218 data__for_each_file(i, d) {
1219 perf_session__delete(d->session);
1220 data__free(d);
1221 }
1222
1223 free(data__files);
1224
1225 if (pdiff.ptime_range)
1226 zfree(&pdiff.ptime_range);
1227
1228 if (abstime_ostr)
1229 free(abstime_ostr);
1230
1231 return ret;
1232}
1233
1234static const char * const diff_usage[] = {
1235 "perf diff [<options>] [old_file] [new_file]",
1236 NULL,
1237};
1238
1239static const struct option options[] = {
1240 OPT_INCR('v', "verbose", &verbose,
1241 "be more verbose (show symbol address, etc)"),
1242 OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
1243 OPT_BOOLEAN('b', "baseline-only", &show_baseline_only,
1244 "Show only items with match in baseline"),
1245 OPT_CALLBACK('c', "compute", &compute,
1246 "delta,delta-abs,ratio,wdiff:w1,w2 (default delta-abs),cycles",
1247 "Entries differential computation selection",
1248 setup_compute),
1249 OPT_BOOLEAN('p', "period", &show_period,
1250 "Show period values."),
1251 OPT_BOOLEAN('F', "formula", &show_formula,
1252 "Show formula."),
1253 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1254 "dump raw trace in ASCII"),
1255 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
1256 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
1257 "file", "kallsyms pathname"),
1258 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
1259 "load module symbols - WARNING: use only with -k and LIVE kernel"),
1260 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
1261 "only consider symbols in these dsos"),
1262 OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1263 "only consider symbols in these comms"),
1264 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1265 "only consider these symbols"),
1266 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
1267 "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
1268 " Please refer the man page for the complete list."),
1269 OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
1270 "separator for columns, no spaces will be added between "
1271 "columns '.' is reserved."),
1272 OPT_CALLBACK(0, "symfs", NULL, "directory",
1273 "Look for files with symbols relative to this directory",
1274 symbol__config_symfs),
1275 OPT_UINTEGER('o', "order", &sort_compute, "Specify compute sorting."),
1276 OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
1277 "How to display percentage of filtered entries", parse_filter_percentage),
1278 OPT_STRING(0, "time", &pdiff.time_str, "str",
1279 "Time span (time percent or absolute timestamp)"),
1280 OPT_STRING(0, "cpu", &cpu_list, "cpu", "list of cpus to profile"),
1281 OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
1282 "only consider symbols in these pids"),
1283 OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
1284 "only consider symbols in these tids"),
1285 OPT_END()
1286};
1287
1288static double baseline_percent(struct hist_entry *he)
1289{
1290 u64 total = hists__total_period(he->hists);
1291
1292 return 100.0 * he->stat.period / total;
1293}
1294
1295static int hpp__color_baseline(struct perf_hpp_fmt *fmt,
1296 struct perf_hpp *hpp, struct hist_entry *he)
1297{
1298 struct diff_hpp_fmt *dfmt =
1299 container_of(fmt, struct diff_hpp_fmt, fmt);
1300 double percent = baseline_percent(he);
1301 char pfmt[20] = " ";
1302
1303 if (!he->dummy) {
1304 scnprintf(pfmt, 20, "%%%d.2f%%%%", dfmt->header_width - 1);
1305 return percent_color_snprintf(hpp->buf, hpp->size,
1306 pfmt, percent);
1307 } else
1308 return scnprintf(hpp->buf, hpp->size, "%*s",
1309 dfmt->header_width, pfmt);
1310}
1311
1312static int hpp__entry_baseline(struct hist_entry *he, char *buf, size_t size)
1313{
1314 double percent = baseline_percent(he);
1315 const char *fmt = symbol_conf.field_sep ? "%.2f" : "%6.2f%%";
1316 int ret = 0;
1317
1318 if (!he->dummy)
1319 ret = scnprintf(buf, size, fmt, percent);
1320
1321 return ret;
1322}
1323
1324static int cycles_printf(struct hist_entry *he, struct hist_entry *pair,
1325 struct perf_hpp *hpp, int width)
1326{
1327 struct block_hist *bh = container_of(he, struct block_hist, he);
1328 struct block_hist *bh_pair = container_of(pair, struct block_hist, he);
1329 struct hist_entry *block_he;
1330 struct block_info *bi;
1331 char buf[128];
1332 char *start_line, *end_line;
1333
1334 block_he = hists__get_entry(&bh_pair->block_hists, bh->block_idx);
1335 if (!block_he) {
1336 hpp->skip = true;
1337 return 0;
1338 }
1339
1340
1341
1342
1343 symbol_conf.disable_add2line_warn = true;
1344
1345 bi = block_he->block_info;
1346
1347 start_line = map__srcline(he->ms.map, bi->sym->start + bi->start,
1348 he->ms.sym);
1349
1350 end_line = map__srcline(he->ms.map, bi->sym->start + bi->end,
1351 he->ms.sym);
1352
1353 if ((start_line != SRCLINE_UNKNOWN) && (end_line != SRCLINE_UNKNOWN)) {
1354 scnprintf(buf, sizeof(buf), "[%s -> %s] %4ld",
1355 start_line, end_line, block_he->diff.cycles);
1356 } else {
1357 scnprintf(buf, sizeof(buf), "[%7lx -> %7lx] %4ld",
1358 bi->start, bi->end, block_he->diff.cycles);
1359 }
1360
1361 free_srcline(start_line);
1362 free_srcline(end_line);
1363
1364 return scnprintf(hpp->buf, hpp->size, "%*s", width, buf);
1365}
1366
1367static int __hpp__color_compare(struct perf_hpp_fmt *fmt,
1368 struct perf_hpp *hpp, struct hist_entry *he,
1369 int comparison_method)
1370{
1371 struct diff_hpp_fmt *dfmt =
1372 container_of(fmt, struct diff_hpp_fmt, fmt);
1373 struct hist_entry *pair = get_pair_fmt(he, dfmt);
1374 double diff;
1375 s64 wdiff;
1376 char pfmt[20] = " ";
1377
1378 if (!pair) {
1379 if (comparison_method == COMPUTE_CYCLES) {
1380 struct block_hist *bh;
1381
1382 bh = container_of(he, struct block_hist, he);
1383 if (bh->block_idx)
1384 hpp->skip = true;
1385 }
1386
1387 goto no_print;
1388 }
1389
1390 switch (comparison_method) {
1391 case COMPUTE_DELTA:
1392 if (pair->diff.computed)
1393 diff = pair->diff.period_ratio_delta;
1394 else
1395 diff = compute_delta(he, pair);
1396
1397 scnprintf(pfmt, 20, "%%%+d.2f%%%%", dfmt->header_width - 1);
1398 return percent_color_snprintf(hpp->buf, hpp->size,
1399 pfmt, diff);
1400 case COMPUTE_RATIO:
1401 if (he->dummy)
1402 goto dummy_print;
1403 if (pair->diff.computed)
1404 diff = pair->diff.period_ratio;
1405 else
1406 diff = compute_ratio(he, pair);
1407
1408 scnprintf(pfmt, 20, "%%%d.6f", dfmt->header_width);
1409 return value_color_snprintf(hpp->buf, hpp->size,
1410 pfmt, diff);
1411 case COMPUTE_WEIGHTED_DIFF:
1412 if (he->dummy)
1413 goto dummy_print;
1414 if (pair->diff.computed)
1415 wdiff = pair->diff.wdiff;
1416 else
1417 wdiff = compute_wdiff(he, pair);
1418
1419 scnprintf(pfmt, 20, "%%14ld", dfmt->header_width);
1420 return color_snprintf(hpp->buf, hpp->size,
1421 get_percent_color(wdiff),
1422 pfmt, wdiff);
1423 case COMPUTE_CYCLES:
1424 return cycles_printf(he, pair, hpp, dfmt->header_width);
1425 default:
1426 BUG_ON(1);
1427 }
1428dummy_print:
1429 return scnprintf(hpp->buf, hpp->size, "%*s",
1430 dfmt->header_width, "N/A");
1431no_print:
1432 return scnprintf(hpp->buf, hpp->size, "%*s",
1433 dfmt->header_width, pfmt);
1434}
1435
1436static int hpp__color_delta(struct perf_hpp_fmt *fmt,
1437 struct perf_hpp *hpp, struct hist_entry *he)
1438{
1439 return __hpp__color_compare(fmt, hpp, he, COMPUTE_DELTA);
1440}
1441
1442static int hpp__color_ratio(struct perf_hpp_fmt *fmt,
1443 struct perf_hpp *hpp, struct hist_entry *he)
1444{
1445 return __hpp__color_compare(fmt, hpp, he, COMPUTE_RATIO);
1446}
1447
1448static int hpp__color_wdiff(struct perf_hpp_fmt *fmt,
1449 struct perf_hpp *hpp, struct hist_entry *he)
1450{
1451 return __hpp__color_compare(fmt, hpp, he, COMPUTE_WEIGHTED_DIFF);
1452}
1453
1454static int hpp__color_cycles(struct perf_hpp_fmt *fmt,
1455 struct perf_hpp *hpp, struct hist_entry *he)
1456{
1457 return __hpp__color_compare(fmt, hpp, he, COMPUTE_CYCLES);
1458}
1459
1460static void
1461hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size)
1462{
1463 switch (idx) {
1464 case PERF_HPP_DIFF__PERIOD_BASELINE:
1465 scnprintf(buf, size, "%" PRIu64, he->stat.period);
1466 break;
1467
1468 default:
1469 break;
1470 }
1471}
1472
1473static void
1474hpp__entry_pair(struct hist_entry *he, struct hist_entry *pair,
1475 int idx, char *buf, size_t size)
1476{
1477 double diff;
1478 double ratio;
1479 s64 wdiff;
1480
1481 switch (idx) {
1482 case PERF_HPP_DIFF__DELTA:
1483 case PERF_HPP_DIFF__DELTA_ABS:
1484 if (pair->diff.computed)
1485 diff = pair->diff.period_ratio_delta;
1486 else
1487 diff = compute_delta(he, pair);
1488
1489 scnprintf(buf, size, "%+4.2F%%", diff);
1490 break;
1491
1492 case PERF_HPP_DIFF__RATIO:
1493
1494 if (he->dummy) {
1495 scnprintf(buf, size, "N/A");
1496 break;
1497 }
1498
1499 if (pair->diff.computed)
1500 ratio = pair->diff.period_ratio;
1501 else
1502 ratio = compute_ratio(he, pair);
1503
1504 if (ratio > 0.0)
1505 scnprintf(buf, size, "%14.6F", ratio);
1506 break;
1507
1508 case PERF_HPP_DIFF__WEIGHTED_DIFF:
1509
1510 if (he->dummy) {
1511 scnprintf(buf, size, "N/A");
1512 break;
1513 }
1514
1515 if (pair->diff.computed)
1516 wdiff = pair->diff.wdiff;
1517 else
1518 wdiff = compute_wdiff(he, pair);
1519
1520 if (wdiff != 0)
1521 scnprintf(buf, size, "%14ld", wdiff);
1522 break;
1523
1524 case PERF_HPP_DIFF__FORMULA:
1525 formula_fprintf(he, pair, buf, size);
1526 break;
1527
1528 case PERF_HPP_DIFF__PERIOD:
1529 scnprintf(buf, size, "%" PRIu64, pair->stat.period);
1530 break;
1531
1532 default:
1533 BUG_ON(1);
1534 };
1535}
1536
1537static void
1538__hpp__entry_global(struct hist_entry *he, struct diff_hpp_fmt *dfmt,
1539 char *buf, size_t size)
1540{
1541 struct hist_entry *pair = get_pair_fmt(he, dfmt);
1542 int idx = dfmt->idx;
1543
1544
1545 if (idx == PERF_HPP_DIFF__BASELINE)
1546 hpp__entry_baseline(he, buf, size);
1547 else {
1548 if (pair)
1549 hpp__entry_pair(he, pair, idx, buf, size);
1550 else
1551 hpp__entry_unpair(he, idx, buf, size);
1552 }
1553}
1554
1555static int hpp__entry_global(struct perf_hpp_fmt *_fmt, struct perf_hpp *hpp,
1556 struct hist_entry *he)
1557{
1558 struct diff_hpp_fmt *dfmt =
1559 container_of(_fmt, struct diff_hpp_fmt, fmt);
1560 char buf[MAX_COL_WIDTH] = " ";
1561
1562 __hpp__entry_global(he, dfmt, buf, MAX_COL_WIDTH);
1563
1564 if (symbol_conf.field_sep)
1565 return scnprintf(hpp->buf, hpp->size, "%s", buf);
1566 else
1567 return scnprintf(hpp->buf, hpp->size, "%*s",
1568 dfmt->header_width, buf);
1569}
1570
1571static int hpp__header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1572 struct hists *hists __maybe_unused,
1573 int line __maybe_unused,
1574 int *span __maybe_unused)
1575{
1576 struct diff_hpp_fmt *dfmt =
1577 container_of(fmt, struct diff_hpp_fmt, fmt);
1578
1579 BUG_ON(!dfmt->header);
1580 return scnprintf(hpp->buf, hpp->size, dfmt->header);
1581}
1582
1583static int hpp__width(struct perf_hpp_fmt *fmt,
1584 struct perf_hpp *hpp __maybe_unused,
1585 struct hists *hists __maybe_unused)
1586{
1587 struct diff_hpp_fmt *dfmt =
1588 container_of(fmt, struct diff_hpp_fmt, fmt);
1589
1590 BUG_ON(dfmt->header_width <= 0);
1591 return dfmt->header_width;
1592}
1593
1594static void init_header(struct data__file *d, struct diff_hpp_fmt *dfmt)
1595{
1596#define MAX_HEADER_NAME 100
1597 char buf_indent[MAX_HEADER_NAME];
1598 char buf[MAX_HEADER_NAME];
1599 const char *header = NULL;
1600 int width = 0;
1601
1602 BUG_ON(dfmt->idx >= PERF_HPP_DIFF__MAX_INDEX);
1603 header = columns[dfmt->idx].name;
1604 width = columns[dfmt->idx].width;
1605
1606
1607 BUG_ON(!header);
1608
1609 if (data__files_cnt > 2)
1610 scnprintf(buf, MAX_HEADER_NAME, "%s/%d", header, d->idx);
1611
1612#define NAME (data__files_cnt > 2 ? buf : header)
1613 dfmt->header_width = width;
1614 width = (int) strlen(NAME);
1615 if (dfmt->header_width < width)
1616 dfmt->header_width = width;
1617
1618 scnprintf(buf_indent, MAX_HEADER_NAME, "%*s",
1619 dfmt->header_width, NAME);
1620
1621 dfmt->header = strdup(buf_indent);
1622#undef MAX_HEADER_NAME
1623#undef NAME
1624}
1625
1626static void data__hpp_register(struct data__file *d, int idx)
1627{
1628 struct diff_hpp_fmt *dfmt = &d->fmt[idx];
1629 struct perf_hpp_fmt *fmt = &dfmt->fmt;
1630
1631 dfmt->idx = idx;
1632
1633 fmt->header = hpp__header;
1634 fmt->width = hpp__width;
1635 fmt->entry = hpp__entry_global;
1636 fmt->cmp = hist_entry__cmp_nop;
1637 fmt->collapse = hist_entry__cmp_nop;
1638
1639
1640 switch (idx) {
1641 case PERF_HPP_DIFF__BASELINE:
1642 fmt->color = hpp__color_baseline;
1643 fmt->sort = hist_entry__cmp_baseline;
1644 break;
1645 case PERF_HPP_DIFF__DELTA:
1646 fmt->color = hpp__color_delta;
1647 fmt->sort = hist_entry__cmp_delta;
1648 break;
1649 case PERF_HPP_DIFF__RATIO:
1650 fmt->color = hpp__color_ratio;
1651 fmt->sort = hist_entry__cmp_ratio;
1652 break;
1653 case PERF_HPP_DIFF__WEIGHTED_DIFF:
1654 fmt->color = hpp__color_wdiff;
1655 fmt->sort = hist_entry__cmp_wdiff;
1656 break;
1657 case PERF_HPP_DIFF__DELTA_ABS:
1658 fmt->color = hpp__color_delta;
1659 fmt->sort = hist_entry__cmp_delta_abs;
1660 break;
1661 case PERF_HPP_DIFF__CYCLES:
1662 fmt->color = hpp__color_cycles;
1663 fmt->sort = hist_entry__cmp_nop;
1664 break;
1665 default:
1666 fmt->sort = hist_entry__cmp_nop;
1667 break;
1668 }
1669
1670 init_header(d, dfmt);
1671 perf_hpp__column_register(fmt);
1672 perf_hpp__register_sort_field(fmt);
1673}
1674
1675static int ui_init(void)
1676{
1677 struct data__file *d;
1678 struct perf_hpp_fmt *fmt;
1679 int i;
1680
1681 data__for_each_file(i, d) {
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691 data__hpp_register(d, i ? compute_2_hpp[compute] :
1692 PERF_HPP_DIFF__BASELINE);
1693
1694
1695
1696
1697
1698
1699
1700
1701 if (show_formula && i)
1702 data__hpp_register(d, PERF_HPP_DIFF__FORMULA);
1703
1704 if (show_period)
1705 data__hpp_register(d, i ? PERF_HPP_DIFF__PERIOD :
1706 PERF_HPP_DIFF__PERIOD_BASELINE);
1707 }
1708
1709 if (!sort_compute)
1710 return 0;
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723 fmt = zalloc(sizeof(*fmt));
1724 if (fmt == NULL) {
1725 pr_err("Memory allocation failed\n");
1726 return -1;
1727 }
1728
1729 fmt->cmp = hist_entry__cmp_nop;
1730 fmt->collapse = hist_entry__cmp_nop;
1731
1732 switch (compute) {
1733 case COMPUTE_DELTA:
1734 fmt->sort = hist_entry__cmp_delta_idx;
1735 break;
1736 case COMPUTE_RATIO:
1737 fmt->sort = hist_entry__cmp_ratio_idx;
1738 break;
1739 case COMPUTE_WEIGHTED_DIFF:
1740 fmt->sort = hist_entry__cmp_wdiff_idx;
1741 break;
1742 case COMPUTE_DELTA_ABS:
1743 fmt->sort = hist_entry__cmp_delta_abs_idx;
1744 break;
1745 case COMPUTE_CYCLES:
1746
1747
1748
1749
1750 fmt->sort = hist_entry__cmp_nop;
1751 break;
1752 default:
1753 BUG_ON(1);
1754 }
1755
1756 perf_hpp__prepend_sort_field(fmt);
1757 return 0;
1758}
1759
1760static int data_init(int argc, const char **argv)
1761{
1762 struct data__file *d;
1763 static const char *defaults[] = {
1764 "perf.data.old",
1765 "perf.data",
1766 };
1767 bool use_default = true;
1768 int i;
1769
1770 data__files_cnt = 2;
1771
1772 if (argc) {
1773 if (argc == 1)
1774 defaults[1] = argv[0];
1775 else {
1776 data__files_cnt = argc;
1777 use_default = false;
1778 }
1779 } else if (perf_guest) {
1780 defaults[0] = "perf.data.host";
1781 defaults[1] = "perf.data.guest";
1782 }
1783
1784 if (sort_compute >= (unsigned int) data__files_cnt) {
1785 pr_err("Order option out of limit.\n");
1786 return -EINVAL;
1787 }
1788
1789 data__files = zalloc(sizeof(*data__files) * data__files_cnt);
1790 if (!data__files)
1791 return -ENOMEM;
1792
1793 data__for_each_file(i, d) {
1794 struct perf_data *data = &d->data;
1795
1796 data->path = use_default ? defaults[i] : argv[i];
1797 data->mode = PERF_DATA_MODE_READ,
1798 data->force = force,
1799
1800 d->idx = i;
1801 }
1802
1803 return 0;
1804}
1805
1806static int diff__config(const char *var, const char *value,
1807 void *cb __maybe_unused)
1808{
1809 if (!strcmp(var, "diff.order")) {
1810 int ret;
1811 if (perf_config_int(&ret, var, value) < 0)
1812 return -1;
1813 sort_compute = ret;
1814 return 0;
1815 }
1816 if (!strcmp(var, "diff.compute")) {
1817 if (!strcmp(value, "delta")) {
1818 compute = COMPUTE_DELTA;
1819 } else if (!strcmp(value, "delta-abs")) {
1820 compute = COMPUTE_DELTA_ABS;
1821 } else if (!strcmp(value, "ratio")) {
1822 compute = COMPUTE_RATIO;
1823 } else if (!strcmp(value, "wdiff")) {
1824 compute = COMPUTE_WEIGHTED_DIFF;
1825 } else {
1826 pr_err("Invalid compute method: %s\n", value);
1827 return -1;
1828 }
1829 }
1830
1831 return 0;
1832}
1833
1834int cmd_diff(int argc, const char **argv)
1835{
1836 int ret = hists__init();
1837
1838 if (ret < 0)
1839 return ret;
1840
1841 perf_config(diff__config, NULL);
1842
1843 argc = parse_options(argc, argv, options, diff_usage, 0);
1844
1845 if (quiet)
1846 perf_quiet_option();
1847
1848 symbol__annotation_init();
1849
1850 if (symbol__init(NULL) < 0)
1851 return -1;
1852
1853 if (data_init(argc, argv) < 0)
1854 return -1;
1855
1856 if (check_file_brstack() < 0)
1857 return -1;
1858
1859 if (compute == COMPUTE_CYCLES && !pdiff.has_br_stack)
1860 return -1;
1861
1862 if (ui_init() < 0)
1863 return -1;
1864
1865 sort__mode = SORT_MODE__DIFF;
1866
1867 if (setup_sorting(NULL) < 0)
1868 usage_with_options(diff_usage, options);
1869
1870 setup_pager();
1871
1872 sort__setup_elide(NULL);
1873
1874 return __cmd_diff();
1875}
1876
