1 // SPDX-License-Identifier: GPL-2.0
5 * Builtin diff command: Analyze two perf.data input files, look up and read
6 * DSOs and symbol information, sort them and produce a diff.
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/util.h"
20 #include "util/data.h"
21 #include "util/config.h"
28 /* Diff command specific HPP columns. */
30 PERF_HPP_DIFF__BASELINE,
31 PERF_HPP_DIFF__PERIOD,
32 PERF_HPP_DIFF__PERIOD_BASELINE,
35 PERF_HPP_DIFF__WEIGHTED_DIFF,
36 PERF_HPP_DIFF__FORMULA,
37 PERF_HPP_DIFF__DELTA_ABS,
39 PERF_HPP_DIFF__MAX_INDEX
43 struct perf_hpp_fmt fmt;
50 struct perf_session *session;
51 struct perf_data data;
54 struct diff_hpp_fmt fmt[PERF_HPP_DIFF__MAX_INDEX];
57 static struct data__file *data__files;
58 static int data__files_cnt;
60 #define data__for_each_file_start(i, d, s) \
61 for (i = s, d = &data__files[s]; \
62 i < data__files_cnt; \
63 i++, d = &data__files[i])
65 #define data__for_each_file(i, d) data__for_each_file_start(i, d, 0)
66 #define data__for_each_file_new(i, d) data__for_each_file_start(i, d, 1)
69 static bool show_period;
70 static bool show_formula;
71 static bool show_baseline_only;
72 static unsigned int sort_compute = 1;
74 static s64 compute_wdiff_w1;
75 static s64 compute_wdiff_w2;
80 COMPUTE_WEIGHTED_DIFF,
85 const char *compute_names[COMPUTE_MAX] = {
86 [COMPUTE_DELTA] = "delta",
87 [COMPUTE_DELTA_ABS] = "delta-abs",
88 [COMPUTE_RATIO] = "ratio",
89 [COMPUTE_WEIGHTED_DIFF] = "wdiff",
92 static int compute = COMPUTE_DELTA_ABS;
94 static int compute_2_hpp[COMPUTE_MAX] = {
95 [COMPUTE_DELTA] = PERF_HPP_DIFF__DELTA,
96 [COMPUTE_DELTA_ABS] = PERF_HPP_DIFF__DELTA_ABS,
97 [COMPUTE_RATIO] = PERF_HPP_DIFF__RATIO,
98 [COMPUTE_WEIGHTED_DIFF] = PERF_HPP_DIFF__WEIGHTED_DIFF,
101 #define MAX_COL_WIDTH 70
103 static struct header_column {
106 } columns[PERF_HPP_DIFF__MAX_INDEX] = {
107 [PERF_HPP_DIFF__BASELINE] = {
110 [PERF_HPP_DIFF__PERIOD] = {
114 [PERF_HPP_DIFF__PERIOD_BASELINE] = {
115 .name = "Base period",
118 [PERF_HPP_DIFF__DELTA] = {
122 [PERF_HPP_DIFF__DELTA_ABS] = {
126 [PERF_HPP_DIFF__RATIO] = {
130 [PERF_HPP_DIFF__WEIGHTED_DIFF] = {
131 .name = "Weighted diff",
134 [PERF_HPP_DIFF__FORMULA] = {
136 .width = MAX_COL_WIDTH,
140 static int setup_compute_opt_wdiff(char *opt)
150 w2_str = strchr(opt, ',');
158 compute_wdiff_w1 = strtol(w1_str, NULL, 10);
159 compute_wdiff_w2 = strtol(w2_str, NULL, 10);
161 if (!compute_wdiff_w1 || !compute_wdiff_w2)
164 pr_debug("compute wdiff w1(%" PRId64 ") w2(%" PRId64 ")\n",
165 compute_wdiff_w1, compute_wdiff_w2);
171 pr_err("Failed: wrong weight data, use 'wdiff:w1,w2'\n");
176 static int setup_compute_opt(char *opt)
178 if (compute == COMPUTE_WEIGHTED_DIFF)
179 return setup_compute_opt_wdiff(opt);
182 pr_err("Failed: extra option specified '%s'", opt);
189 static int setup_compute(const struct option *opt, const char *str,
190 int unset __maybe_unused)
192 int *cp = (int *) opt->value;
193 char *cstr = (char *) str;
203 option = strchr(str, ':');
205 unsigned len = option++ - str;
208 * The str data are not writeable, so we need
209 * to use another buffer.
212 /* No option value is longer. */
213 if (len >= sizeof(buf))
216 strncpy(buf, str, len);
221 for (i = 0; i < COMPUTE_MAX; i++)
222 if (!strcmp(cstr, compute_names[i])) {
224 return setup_compute_opt(option);
227 pr_err("Failed: '%s' is not computation method "
228 "(use 'delta','ratio' or 'wdiff')\n", str);
232 static double period_percent(struct hist_entry *he, u64 period)
234 u64 total = hists__total_period(he->hists);
236 return (period * 100.0) / total;
239 static double compute_delta(struct hist_entry *he, struct hist_entry *pair)
241 double old_percent = period_percent(he, he->stat.period);
242 double new_percent = period_percent(pair, pair->stat.period);
244 pair->diff.period_ratio_delta = new_percent - old_percent;
245 pair->diff.computed = true;
246 return pair->diff.period_ratio_delta;
249 static double compute_ratio(struct hist_entry *he, struct hist_entry *pair)
251 double old_period = he->stat.period ?: 1;
252 double new_period = pair->stat.period;
254 pair->diff.computed = true;
255 pair->diff.period_ratio = new_period / old_period;
256 return pair->diff.period_ratio;
259 static s64 compute_wdiff(struct hist_entry *he, struct hist_entry *pair)
261 u64 old_period = he->stat.period;
262 u64 new_period = pair->stat.period;
264 pair->diff.computed = true;
265 pair->diff.wdiff = new_period * compute_wdiff_w2 -
266 old_period * compute_wdiff_w1;
268 return pair->diff.wdiff;
271 static int formula_delta(struct hist_entry *he, struct hist_entry *pair,
272 char *buf, size_t size)
274 u64 he_total = he->hists->stats.total_period;
275 u64 pair_total = pair->hists->stats.total_period;
277 if (symbol_conf.filter_relative) {
278 he_total = he->hists->stats.total_non_filtered_period;
279 pair_total = pair->hists->stats.total_non_filtered_period;
281 return scnprintf(buf, size,
282 "(%" PRIu64 " * 100 / %" PRIu64 ") - "
283 "(%" PRIu64 " * 100 / %" PRIu64 ")",
284 pair->stat.period, pair_total,
285 he->stat.period, he_total);
288 static int formula_ratio(struct hist_entry *he, struct hist_entry *pair,
289 char *buf, size_t size)
291 double old_period = he->stat.period;
292 double new_period = pair->stat.period;
294 return scnprintf(buf, size, "%.0F / %.0F", new_period, old_period);
297 static int formula_wdiff(struct hist_entry *he, struct hist_entry *pair,
298 char *buf, size_t size)
300 u64 old_period = he->stat.period;
301 u64 new_period = pair->stat.period;
303 return scnprintf(buf, size,
304 "(%" PRIu64 " * " "%" PRId64 ") - (%" PRIu64 " * " "%" PRId64 ")",
305 new_period, compute_wdiff_w2, old_period, compute_wdiff_w1);
308 static int formula_fprintf(struct hist_entry *he, struct hist_entry *pair,
309 char *buf, size_t size)
313 case COMPUTE_DELTA_ABS:
314 return formula_delta(he, pair, buf, size);
316 return formula_ratio(he, pair, buf, size);
317 case COMPUTE_WEIGHTED_DIFF:
318 return formula_wdiff(he, pair, buf, size);
326 static int diff__process_sample_event(struct perf_tool *tool __maybe_unused,
327 union perf_event *event,
328 struct perf_sample *sample,
329 struct perf_evsel *evsel,
330 struct machine *machine)
332 struct addr_location al;
333 struct hists *hists = evsel__hists(evsel);
336 if (machine__resolve(machine, &al, sample) < 0) {
337 pr_warning("problem processing %d event, skipping it.\n",
342 if (!hists__add_entry(hists, &al, NULL, NULL, NULL, sample, true)) {
343 pr_warning("problem incrementing symbol period, skipping event\n");
348 * The total_period is updated here before going to the output
349 * tree since normally only the baseline hists will call
350 * hists__output_resort() and precompute needs the total
351 * period in order to sort entries by percentage delta.
353 hists->stats.total_period += sample->period;
355 hists->stats.total_non_filtered_period += sample->period;
358 addr_location__put(&al);
362 static struct perf_tool tool = {
363 .sample = diff__process_sample_event,
364 .mmap = perf_event__process_mmap,
365 .mmap2 = perf_event__process_mmap2,
366 .comm = perf_event__process_comm,
367 .exit = perf_event__process_exit,
368 .fork = perf_event__process_fork,
369 .lost = perf_event__process_lost,
370 .namespaces = perf_event__process_namespaces,
371 .ordered_events = true,
372 .ordering_requires_timestamps = true,
375 static struct perf_evsel *evsel_match(struct perf_evsel *evsel,
376 struct perf_evlist *evlist)
378 struct perf_evsel *e;
380 evlist__for_each_entry(evlist, e) {
381 if (perf_evsel__match2(evsel, e))
388 static void perf_evlist__collapse_resort(struct perf_evlist *evlist)
390 struct perf_evsel *evsel;
392 evlist__for_each_entry(evlist, evsel) {
393 struct hists *hists = evsel__hists(evsel);
395 hists__collapse_resort(hists, NULL);
399 static struct data__file *fmt_to_data_file(struct perf_hpp_fmt *fmt)
401 struct diff_hpp_fmt *dfmt = container_of(fmt, struct diff_hpp_fmt, fmt);
402 void *ptr = dfmt - dfmt->idx;
403 struct data__file *d = container_of(ptr, struct data__file, fmt);
408 static struct hist_entry*
409 get_pair_data(struct hist_entry *he, struct data__file *d)
411 if (hist_entry__has_pairs(he)) {
412 struct hist_entry *pair;
414 list_for_each_entry(pair, &he->pairs.head, pairs.node)
415 if (pair->hists == d->hists)
422 static struct hist_entry*
423 get_pair_fmt(struct hist_entry *he, struct diff_hpp_fmt *dfmt)
425 struct data__file *d = fmt_to_data_file(&dfmt->fmt);
427 return get_pair_data(he, d);
430 static void hists__baseline_only(struct hists *hists)
432 struct rb_root *root;
433 struct rb_node *next;
435 if (hists__has(hists, need_collapse))
436 root = &hists->entries_collapsed;
438 root = hists->entries_in;
440 next = rb_first(root);
441 while (next != NULL) {
442 struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node_in);
444 next = rb_next(&he->rb_node_in);
445 if (!hist_entry__next_pair(he)) {
446 rb_erase(&he->rb_node_in, root);
447 hist_entry__delete(he);
452 static void hists__precompute(struct hists *hists)
454 struct rb_root *root;
455 struct rb_node *next;
457 if (hists__has(hists, need_collapse))
458 root = &hists->entries_collapsed;
460 root = hists->entries_in;
462 next = rb_first(root);
463 while (next != NULL) {
464 struct hist_entry *he, *pair;
465 struct data__file *d;
468 he = rb_entry(next, struct hist_entry, rb_node_in);
469 next = rb_next(&he->rb_node_in);
471 data__for_each_file_new(i, d) {
472 pair = get_pair_data(he, d);
478 case COMPUTE_DELTA_ABS:
479 compute_delta(he, pair);
482 compute_ratio(he, pair);
484 case COMPUTE_WEIGHTED_DIFF:
485 compute_wdiff(he, pair);
494 static int64_t cmp_doubles(double l, double r)
505 __hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
511 double l = left->diff.period_ratio_delta;
512 double r = right->diff.period_ratio_delta;
514 return cmp_doubles(l, r);
516 case COMPUTE_DELTA_ABS:
518 double l = fabs(left->diff.period_ratio_delta);
519 double r = fabs(right->diff.period_ratio_delta);
521 return cmp_doubles(l, r);
525 double l = left->diff.period_ratio;
526 double r = right->diff.period_ratio;
528 return cmp_doubles(l, r);
530 case COMPUTE_WEIGHTED_DIFF:
532 s64 l = left->diff.wdiff;
533 s64 r = right->diff.wdiff;
545 hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
548 bool pairs_left = hist_entry__has_pairs(left);
549 bool pairs_right = hist_entry__has_pairs(right);
550 struct hist_entry *p_right, *p_left;
552 if (!pairs_left && !pairs_right)
555 if (!pairs_left || !pairs_right)
556 return pairs_left ? -1 : 1;
558 p_left = get_pair_data(left, &data__files[sort_idx]);
559 p_right = get_pair_data(right, &data__files[sort_idx]);
561 if (!p_left && !p_right)
564 if (!p_left || !p_right)
565 return p_left ? -1 : 1;
568 * We have 2 entries of same kind, let's
569 * make the data comparison.
571 return __hist_entry__cmp_compute(p_left, p_right, c);
575 hist_entry__cmp_compute_idx(struct hist_entry *left, struct hist_entry *right,
578 struct hist_entry *p_right, *p_left;
580 p_left = get_pair_data(left, &data__files[sort_idx]);
581 p_right = get_pair_data(right, &data__files[sort_idx]);
583 if (!p_left && !p_right)
586 if (!p_left || !p_right)
587 return p_left ? -1 : 1;
589 if (c != COMPUTE_DELTA && c != COMPUTE_DELTA_ABS) {
591 * The delta can be computed without the baseline, but
592 * others are not. Put those entries which have no
595 if (left->dummy && right->dummy)
598 if (left->dummy || right->dummy)
599 return left->dummy ? 1 : -1;
602 return __hist_entry__cmp_compute(p_left, p_right, c);
606 hist_entry__cmp_nop(struct perf_hpp_fmt *fmt __maybe_unused,
607 struct hist_entry *left __maybe_unused,
608 struct hist_entry *right __maybe_unused)
614 hist_entry__cmp_baseline(struct perf_hpp_fmt *fmt __maybe_unused,
615 struct hist_entry *left, struct hist_entry *right)
617 if (left->stat.period == right->stat.period)
619 return left->stat.period > right->stat.period ? 1 : -1;
623 hist_entry__cmp_delta(struct perf_hpp_fmt *fmt,
624 struct hist_entry *left, struct hist_entry *right)
626 struct data__file *d = fmt_to_data_file(fmt);
628 return hist_entry__cmp_compute(right, left, COMPUTE_DELTA, d->idx);
632 hist_entry__cmp_delta_abs(struct perf_hpp_fmt *fmt,
633 struct hist_entry *left, struct hist_entry *right)
635 struct data__file *d = fmt_to_data_file(fmt);
637 return hist_entry__cmp_compute(right, left, COMPUTE_DELTA_ABS, d->idx);
641 hist_entry__cmp_ratio(struct perf_hpp_fmt *fmt,
642 struct hist_entry *left, struct hist_entry *right)
644 struct data__file *d = fmt_to_data_file(fmt);
646 return hist_entry__cmp_compute(right, left, COMPUTE_RATIO, d->idx);
650 hist_entry__cmp_wdiff(struct perf_hpp_fmt *fmt,
651 struct hist_entry *left, struct hist_entry *right)
653 struct data__file *d = fmt_to_data_file(fmt);
655 return hist_entry__cmp_compute(right, left, COMPUTE_WEIGHTED_DIFF, d->idx);
659 hist_entry__cmp_delta_idx(struct perf_hpp_fmt *fmt __maybe_unused,
660 struct hist_entry *left, struct hist_entry *right)
662 return hist_entry__cmp_compute_idx(right, left, COMPUTE_DELTA,
667 hist_entry__cmp_delta_abs_idx(struct perf_hpp_fmt *fmt __maybe_unused,
668 struct hist_entry *left, struct hist_entry *right)
670 return hist_entry__cmp_compute_idx(right, left, COMPUTE_DELTA_ABS,
675 hist_entry__cmp_ratio_idx(struct perf_hpp_fmt *fmt __maybe_unused,
676 struct hist_entry *left, struct hist_entry *right)
678 return hist_entry__cmp_compute_idx(right, left, COMPUTE_RATIO,
683 hist_entry__cmp_wdiff_idx(struct perf_hpp_fmt *fmt __maybe_unused,
684 struct hist_entry *left, struct hist_entry *right)
686 return hist_entry__cmp_compute_idx(right, left, COMPUTE_WEIGHTED_DIFF,
690 static void hists__process(struct hists *hists)
692 if (show_baseline_only)
693 hists__baseline_only(hists);
695 hists__precompute(hists);
696 hists__output_resort(hists, NULL);
698 hists__fprintf(hists, !quiet, 0, 0, 0, stdout,
699 !symbol_conf.use_callchain);
702 static void data__fprintf(void)
704 struct data__file *d;
707 fprintf(stdout, "# Data files:\n");
709 data__for_each_file(i, d)
710 fprintf(stdout, "# [%d] %s %s\n",
711 d->idx, d->data.file.path,
712 !d->idx ? "(Baseline)" : "");
714 fprintf(stdout, "#\n");
717 static void data_process(void)
719 struct perf_evlist *evlist_base = data__files[0].session->evlist;
720 struct perf_evsel *evsel_base;
723 evlist__for_each_entry(evlist_base, evsel_base) {
724 struct hists *hists_base = evsel__hists(evsel_base);
725 struct data__file *d;
728 data__for_each_file_new(i, d) {
729 struct perf_evlist *evlist = d->session->evlist;
730 struct perf_evsel *evsel;
733 evsel = evsel_match(evsel_base, evlist);
737 hists = evsel__hists(evsel);
740 hists__match(hists_base, hists);
742 if (!show_baseline_only)
743 hists__link(hists_base, hists);
747 fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
748 perf_evsel__name(evsel_base));
753 if (verbose > 0 || ((data__files_cnt > 2) && !quiet))
756 /* Don't sort callchain for perf diff */
757 perf_evsel__reset_sample_bit(evsel_base, CALLCHAIN);
759 hists__process(hists_base);
763 static void data__free(struct data__file *d)
767 for (col = 0; col < PERF_HPP_DIFF__MAX_INDEX; col++) {
768 struct diff_hpp_fmt *fmt = &d->fmt[col];
774 static int __cmd_diff(void)
776 struct data__file *d;
777 int ret = -EINVAL, i;
779 data__for_each_file(i, d) {
780 d->session = perf_session__new(&d->data, false, &tool);
782 pr_err("Failed to open %s\n", d->data.file.path);
787 ret = perf_session__process_events(d->session);
789 pr_err("Failed to process %s\n", d->data.file.path);
793 perf_evlist__collapse_resort(d->session->evlist);
799 data__for_each_file(i, d) {
800 perf_session__delete(d->session);
808 static const char * const diff_usage[] = {
809 "perf diff [<options>] [old_file] [new_file]",
813 static const struct option options[] = {
814 OPT_INCR('v', "verbose", &verbose,
815 "be more verbose (show symbol address, etc)"),
816 OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
817 OPT_BOOLEAN('b', "baseline-only", &show_baseline_only,
818 "Show only items with match in baseline"),
819 OPT_CALLBACK('c', "compute", &compute,
820 "delta,delta-abs,ratio,wdiff:w1,w2 (default delta-abs)",
821 "Entries differential computation selection",
823 OPT_BOOLEAN('p', "period", &show_period,
824 "Show period values."),
825 OPT_BOOLEAN('F', "formula", &show_formula,
827 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
828 "dump raw trace in ASCII"),
829 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
830 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
831 "file", "kallsyms pathname"),
832 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
833 "load module symbols - WARNING: use only with -k and LIVE kernel"),
834 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
835 "only consider symbols in these dsos"),
836 OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
837 "only consider symbols in these comms"),
838 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
839 "only consider these symbols"),
840 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
841 "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
842 " Please refer the man page for the complete list."),
843 OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
844 "separator for columns, no spaces will be added between "
845 "columns '.' is reserved."),
846 OPT_CALLBACK(0, "symfs", NULL, "directory",
847 "Look for files with symbols relative to this directory",
848 symbol__config_symfs),
849 OPT_UINTEGER('o', "order", &sort_compute, "Specify compute sorting."),
850 OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
851 "How to display percentage of filtered entries", parse_filter_percentage),
855 static double baseline_percent(struct hist_entry *he)
857 u64 total = hists__total_period(he->hists);
859 return 100.0 * he->stat.period / total;
862 static int hpp__color_baseline(struct perf_hpp_fmt *fmt,
863 struct perf_hpp *hpp, struct hist_entry *he)
865 struct diff_hpp_fmt *dfmt =
866 container_of(fmt, struct diff_hpp_fmt, fmt);
867 double percent = baseline_percent(he);
871 scnprintf(pfmt, 20, "%%%d.2f%%%%", dfmt->header_width - 1);
872 return percent_color_snprintf(hpp->buf, hpp->size,
875 return scnprintf(hpp->buf, hpp->size, "%*s",
876 dfmt->header_width, pfmt);
879 static int hpp__entry_baseline(struct hist_entry *he, char *buf, size_t size)
881 double percent = baseline_percent(he);
882 const char *fmt = symbol_conf.field_sep ? "%.2f" : "%6.2f%%";
886 ret = scnprintf(buf, size, fmt, percent);
891 static int __hpp__color_compare(struct perf_hpp_fmt *fmt,
892 struct perf_hpp *hpp, struct hist_entry *he,
893 int comparison_method)
895 struct diff_hpp_fmt *dfmt =
896 container_of(fmt, struct diff_hpp_fmt, fmt);
897 struct hist_entry *pair = get_pair_fmt(he, dfmt);
905 switch (comparison_method) {
907 if (pair->diff.computed)
908 diff = pair->diff.period_ratio_delta;
910 diff = compute_delta(he, pair);
912 scnprintf(pfmt, 20, "%%%+d.2f%%%%", dfmt->header_width - 1);
913 return percent_color_snprintf(hpp->buf, hpp->size,
918 if (pair->diff.computed)
919 diff = pair->diff.period_ratio;
921 diff = compute_ratio(he, pair);
923 scnprintf(pfmt, 20, "%%%d.6f", dfmt->header_width);
924 return value_color_snprintf(hpp->buf, hpp->size,
926 case COMPUTE_WEIGHTED_DIFF:
929 if (pair->diff.computed)
930 wdiff = pair->diff.wdiff;
932 wdiff = compute_wdiff(he, pair);
934 scnprintf(pfmt, 20, "%%14ld", dfmt->header_width);
935 return color_snprintf(hpp->buf, hpp->size,
936 get_percent_color(wdiff),
942 return scnprintf(hpp->buf, hpp->size, "%*s",
943 dfmt->header_width, "N/A");
945 return scnprintf(hpp->buf, hpp->size, "%*s",
946 dfmt->header_width, pfmt);
949 static int hpp__color_delta(struct perf_hpp_fmt *fmt,
950 struct perf_hpp *hpp, struct hist_entry *he)
952 return __hpp__color_compare(fmt, hpp, he, COMPUTE_DELTA);
955 static int hpp__color_ratio(struct perf_hpp_fmt *fmt,
956 struct perf_hpp *hpp, struct hist_entry *he)
958 return __hpp__color_compare(fmt, hpp, he, COMPUTE_RATIO);
961 static int hpp__color_wdiff(struct perf_hpp_fmt *fmt,
962 struct perf_hpp *hpp, struct hist_entry *he)
964 return __hpp__color_compare(fmt, hpp, he, COMPUTE_WEIGHTED_DIFF);
968 hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size)
971 case PERF_HPP_DIFF__PERIOD_BASELINE:
972 scnprintf(buf, size, "%" PRIu64, he->stat.period);
981 hpp__entry_pair(struct hist_entry *he, struct hist_entry *pair,
982 int idx, char *buf, size_t size)
989 case PERF_HPP_DIFF__DELTA:
990 case PERF_HPP_DIFF__DELTA_ABS:
991 if (pair->diff.computed)
992 diff = pair->diff.period_ratio_delta;
994 diff = compute_delta(he, pair);
996 scnprintf(buf, size, "%+4.2F%%", diff);
999 case PERF_HPP_DIFF__RATIO:
1000 /* No point for ratio number if we are dummy.. */
1002 scnprintf(buf, size, "N/A");
1006 if (pair->diff.computed)
1007 ratio = pair->diff.period_ratio;
1009 ratio = compute_ratio(he, pair);
1012 scnprintf(buf, size, "%14.6F", ratio);
1015 case PERF_HPP_DIFF__WEIGHTED_DIFF:
1016 /* No point for wdiff number if we are dummy.. */
1018 scnprintf(buf, size, "N/A");
1022 if (pair->diff.computed)
1023 wdiff = pair->diff.wdiff;
1025 wdiff = compute_wdiff(he, pair);
1028 scnprintf(buf, size, "%14ld", wdiff);
1031 case PERF_HPP_DIFF__FORMULA:
1032 formula_fprintf(he, pair, buf, size);
1035 case PERF_HPP_DIFF__PERIOD:
1036 scnprintf(buf, size, "%" PRIu64, pair->stat.period);
1045 __hpp__entry_global(struct hist_entry *he, struct diff_hpp_fmt *dfmt,
1046 char *buf, size_t size)
1048 struct hist_entry *pair = get_pair_fmt(he, dfmt);
1049 int idx = dfmt->idx;
1051 /* baseline is special */
1052 if (idx == PERF_HPP_DIFF__BASELINE)
1053 hpp__entry_baseline(he, buf, size);
1056 hpp__entry_pair(he, pair, idx, buf, size);
1058 hpp__entry_unpair(he, idx, buf, size);
1062 static int hpp__entry_global(struct perf_hpp_fmt *_fmt, struct perf_hpp *hpp,
1063 struct hist_entry *he)
1065 struct diff_hpp_fmt *dfmt =
1066 container_of(_fmt, struct diff_hpp_fmt, fmt);
1067 char buf[MAX_COL_WIDTH] = " ";
1069 __hpp__entry_global(he, dfmt, buf, MAX_COL_WIDTH);
1071 if (symbol_conf.field_sep)
1072 return scnprintf(hpp->buf, hpp->size, "%s", buf);
1074 return scnprintf(hpp->buf, hpp->size, "%*s",
1075 dfmt->header_width, buf);
1078 static int hpp__header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1079 struct hists *hists __maybe_unused,
1080 int line __maybe_unused,
1081 int *span __maybe_unused)
1083 struct diff_hpp_fmt *dfmt =
1084 container_of(fmt, struct diff_hpp_fmt, fmt);
1086 BUG_ON(!dfmt->header);
1087 return scnprintf(hpp->buf, hpp->size, dfmt->header);
1090 static int hpp__width(struct perf_hpp_fmt *fmt,
1091 struct perf_hpp *hpp __maybe_unused,
1092 struct hists *hists __maybe_unused)
1094 struct diff_hpp_fmt *dfmt =
1095 container_of(fmt, struct diff_hpp_fmt, fmt);
1097 BUG_ON(dfmt->header_width <= 0);
1098 return dfmt->header_width;
1101 static void init_header(struct data__file *d, struct diff_hpp_fmt *dfmt)
1103 #define MAX_HEADER_NAME 100
1104 char buf_indent[MAX_HEADER_NAME];
1105 char buf[MAX_HEADER_NAME];
1106 const char *header = NULL;
1109 BUG_ON(dfmt->idx >= PERF_HPP_DIFF__MAX_INDEX);
1110 header = columns[dfmt->idx].name;
1111 width = columns[dfmt->idx].width;
1113 /* Only our defined HPP fmts should appear here. */
1116 if (data__files_cnt > 2)
1117 scnprintf(buf, MAX_HEADER_NAME, "%s/%d", header, d->idx);
1119 #define NAME (data__files_cnt > 2 ? buf : header)
1120 dfmt->header_width = width;
1121 width = (int) strlen(NAME);
1122 if (dfmt->header_width < width)
1123 dfmt->header_width = width;
1125 scnprintf(buf_indent, MAX_HEADER_NAME, "%*s",
1126 dfmt->header_width, NAME);
1128 dfmt->header = strdup(buf_indent);
1129 #undef MAX_HEADER_NAME
1133 static void data__hpp_register(struct data__file *d, int idx)
1135 struct diff_hpp_fmt *dfmt = &d->fmt[idx];
1136 struct perf_hpp_fmt *fmt = &dfmt->fmt;
1140 fmt->header = hpp__header;
1141 fmt->width = hpp__width;
1142 fmt->entry = hpp__entry_global;
1143 fmt->cmp = hist_entry__cmp_nop;
1144 fmt->collapse = hist_entry__cmp_nop;
1146 /* TODO more colors */
1148 case PERF_HPP_DIFF__BASELINE:
1149 fmt->color = hpp__color_baseline;
1150 fmt->sort = hist_entry__cmp_baseline;
1152 case PERF_HPP_DIFF__DELTA:
1153 fmt->color = hpp__color_delta;
1154 fmt->sort = hist_entry__cmp_delta;
1156 case PERF_HPP_DIFF__RATIO:
1157 fmt->color = hpp__color_ratio;
1158 fmt->sort = hist_entry__cmp_ratio;
1160 case PERF_HPP_DIFF__WEIGHTED_DIFF:
1161 fmt->color = hpp__color_wdiff;
1162 fmt->sort = hist_entry__cmp_wdiff;
1164 case PERF_HPP_DIFF__DELTA_ABS:
1165 fmt->color = hpp__color_delta;
1166 fmt->sort = hist_entry__cmp_delta_abs;
1169 fmt->sort = hist_entry__cmp_nop;
1173 init_header(d, dfmt);
1174 perf_hpp__column_register(fmt);
1175 perf_hpp__register_sort_field(fmt);
1178 static int ui_init(void)
1180 struct data__file *d;
1181 struct perf_hpp_fmt *fmt;
1184 data__for_each_file(i, d) {
1187 * Baseline or compute realted columns:
1189 * PERF_HPP_DIFF__BASELINE
1190 * PERF_HPP_DIFF__DELTA
1191 * PERF_HPP_DIFF__RATIO
1192 * PERF_HPP_DIFF__WEIGHTED_DIFF
1194 data__hpp_register(d, i ? compute_2_hpp[compute] :
1195 PERF_HPP_DIFF__BASELINE);
1200 * PERF_HPP_DIFF__FORMULA
1201 * PERF_HPP_DIFF__PERIOD
1202 * PERF_HPP_DIFF__PERIOD_BASELINE
1204 if (show_formula && i)
1205 data__hpp_register(d, PERF_HPP_DIFF__FORMULA);
1208 data__hpp_register(d, i ? PERF_HPP_DIFF__PERIOD :
1209 PERF_HPP_DIFF__PERIOD_BASELINE);
1216 * Prepend an fmt to sort on columns at 'sort_compute' first.
1217 * This fmt is added only to the sort list but not to the
1218 * output fields list.
1220 * Note that this column (data) can be compared twice - one
1221 * for this 'sort_compute' fmt and another for the normal
1222 * diff_hpp_fmt. But it shouldn't a problem as most entries
1223 * will be sorted out by first try or baseline and comparing
1224 * is not a costly operation.
1226 fmt = zalloc(sizeof(*fmt));
1228 pr_err("Memory allocation failed\n");
1232 fmt->cmp = hist_entry__cmp_nop;
1233 fmt->collapse = hist_entry__cmp_nop;
1237 fmt->sort = hist_entry__cmp_delta_idx;
1240 fmt->sort = hist_entry__cmp_ratio_idx;
1242 case COMPUTE_WEIGHTED_DIFF:
1243 fmt->sort = hist_entry__cmp_wdiff_idx;
1245 case COMPUTE_DELTA_ABS:
1246 fmt->sort = hist_entry__cmp_delta_abs_idx;
1252 perf_hpp__prepend_sort_field(fmt);
1256 static int data_init(int argc, const char **argv)
1258 struct data__file *d;
1259 static const char *defaults[] = {
1263 bool use_default = true;
1266 data__files_cnt = 2;
1270 defaults[1] = argv[0];
1272 data__files_cnt = argc;
1273 use_default = false;
1275 } else if (perf_guest) {
1276 defaults[0] = "perf.data.host";
1277 defaults[1] = "perf.data.guest";
1280 if (sort_compute >= (unsigned int) data__files_cnt) {
1281 pr_err("Order option out of limit.\n");
1285 data__files = zalloc(sizeof(*data__files) * data__files_cnt);
1289 data__for_each_file(i, d) {
1290 struct perf_data *data = &d->data;
1292 data->file.path = use_default ? defaults[i] : argv[i];
1293 data->mode = PERF_DATA_MODE_READ,
1294 data->force = force,
1302 static int diff__config(const char *var, const char *value,
1303 void *cb __maybe_unused)
1305 if (!strcmp(var, "diff.order")) {
1307 if (perf_config_int(&ret, var, value) < 0)
1312 if (!strcmp(var, "diff.compute")) {
1313 if (!strcmp(value, "delta")) {
1314 compute = COMPUTE_DELTA;
1315 } else if (!strcmp(value, "delta-abs")) {
1316 compute = COMPUTE_DELTA_ABS;
1317 } else if (!strcmp(value, "ratio")) {
1318 compute = COMPUTE_RATIO;
1319 } else if (!strcmp(value, "wdiff")) {
1320 compute = COMPUTE_WEIGHTED_DIFF;
1322 pr_err("Invalid compute method: %s\n", value);
1330 int cmd_diff(int argc, const char **argv)
1332 int ret = hists__init();
1337 perf_config(diff__config, NULL);
1339 argc = parse_options(argc, argv, options, diff_usage, 0);
1342 perf_quiet_option();
1344 if (symbol__init(NULL) < 0)
1347 if (data_init(argc, argv) < 0)
1353 sort__mode = SORT_MODE__DIFF;
1355 if (setup_sorting(NULL) < 0)
1356 usage_with_options(diff_usage, options);
1360 sort__setup_elide(NULL);
1362 return __cmd_diff();