4 * Builtin diff command: Analyze two perf.data input files, look up and read
5 * DSOs and symbol information, sort them and produce a diff.
9 #include "util/debug.h"
10 #include "util/event.h"
11 #include "util/hist.h"
12 #include "util/evsel.h"
13 #include "util/evlist.h"
14 #include "util/session.h"
15 #include "util/tool.h"
16 #include "util/sort.h"
17 #include "util/symbol.h"
18 #include "util/util.h"
19 #include "util/data.h"
24 /* Diff command specific HPP columns. */
26 PERF_HPP_DIFF__BASELINE,
27 PERF_HPP_DIFF__PERIOD,
28 PERF_HPP_DIFF__PERIOD_BASELINE,
31 PERF_HPP_DIFF__WEIGHTED_DIFF,
32 PERF_HPP_DIFF__FORMULA,
34 PERF_HPP_DIFF__MAX_INDEX
38 struct perf_hpp_fmt fmt;
45 struct perf_session *session;
46 struct perf_data_file file;
49 struct diff_hpp_fmt fmt[PERF_HPP_DIFF__MAX_INDEX];
52 static struct data__file *data__files;
53 static int data__files_cnt;
55 #define data__for_each_file_start(i, d, s) \
56 for (i = s, d = &data__files[s]; \
57 i < data__files_cnt; \
58 i++, d = &data__files[i])
60 #define data__for_each_file(i, d) data__for_each_file_start(i, d, 0)
61 #define data__for_each_file_new(i, d) data__for_each_file_start(i, d, 1)
64 static bool show_period;
65 static bool show_formula;
66 static bool show_baseline_only;
67 static unsigned int sort_compute;
69 static s64 compute_wdiff_w1;
70 static s64 compute_wdiff_w2;
75 COMPUTE_WEIGHTED_DIFF,
79 const char *compute_names[COMPUTE_MAX] = {
80 [COMPUTE_DELTA] = "delta",
81 [COMPUTE_RATIO] = "ratio",
82 [COMPUTE_WEIGHTED_DIFF] = "wdiff",
87 static int compute_2_hpp[COMPUTE_MAX] = {
88 [COMPUTE_DELTA] = PERF_HPP_DIFF__DELTA,
89 [COMPUTE_RATIO] = PERF_HPP_DIFF__RATIO,
90 [COMPUTE_WEIGHTED_DIFF] = PERF_HPP_DIFF__WEIGHTED_DIFF,
93 #define MAX_COL_WIDTH 70
95 static struct header_column {
98 } columns[PERF_HPP_DIFF__MAX_INDEX] = {
99 [PERF_HPP_DIFF__BASELINE] = {
102 [PERF_HPP_DIFF__PERIOD] = {
106 [PERF_HPP_DIFF__PERIOD_BASELINE] = {
107 .name = "Base period",
110 [PERF_HPP_DIFF__DELTA] = {
114 [PERF_HPP_DIFF__RATIO] = {
118 [PERF_HPP_DIFF__WEIGHTED_DIFF] = {
119 .name = "Weighted diff",
122 [PERF_HPP_DIFF__FORMULA] = {
124 .width = MAX_COL_WIDTH,
128 static int setup_compute_opt_wdiff(char *opt)
138 w2_str = strchr(opt, ',');
146 compute_wdiff_w1 = strtol(w1_str, NULL, 10);
147 compute_wdiff_w2 = strtol(w2_str, NULL, 10);
149 if (!compute_wdiff_w1 || !compute_wdiff_w2)
152 pr_debug("compute wdiff w1(%" PRId64 ") w2(%" PRId64 ")\n",
153 compute_wdiff_w1, compute_wdiff_w2);
159 pr_err("Failed: wrong weight data, use 'wdiff:w1,w2'\n");
164 static int setup_compute_opt(char *opt)
166 if (compute == COMPUTE_WEIGHTED_DIFF)
167 return setup_compute_opt_wdiff(opt);
170 pr_err("Failed: extra option specified '%s'", opt);
177 static int setup_compute(const struct option *opt, const char *str,
178 int unset __maybe_unused)
180 int *cp = (int *) opt->value;
181 char *cstr = (char *) str;
191 option = strchr(str, ':');
193 unsigned len = option++ - str;
196 * The str data are not writeable, so we need
197 * to use another buffer.
200 /* No option value is longer. */
201 if (len >= sizeof(buf))
204 strncpy(buf, str, len);
209 for (i = 0; i < COMPUTE_MAX; i++)
210 if (!strcmp(cstr, compute_names[i])) {
212 return setup_compute_opt(option);
215 pr_err("Failed: '%s' is not computation method "
216 "(use 'delta','ratio' or 'wdiff')\n", str);
220 static double period_percent(struct hist_entry *he, u64 period)
222 u64 total = hists__total_period(he->hists);
224 return (period * 100.0) / total;
227 static double compute_delta(struct hist_entry *he, struct hist_entry *pair)
229 double old_percent = period_percent(he, he->stat.period);
230 double new_percent = period_percent(pair, pair->stat.period);
232 pair->diff.period_ratio_delta = new_percent - old_percent;
233 pair->diff.computed = true;
234 return pair->diff.period_ratio_delta;
237 static double compute_ratio(struct hist_entry *he, struct hist_entry *pair)
239 double old_period = he->stat.period ?: 1;
240 double new_period = pair->stat.period;
242 pair->diff.computed = true;
243 pair->diff.period_ratio = new_period / old_period;
244 return pair->diff.period_ratio;
247 static s64 compute_wdiff(struct hist_entry *he, struct hist_entry *pair)
249 u64 old_period = he->stat.period;
250 u64 new_period = pair->stat.period;
252 pair->diff.computed = true;
253 pair->diff.wdiff = new_period * compute_wdiff_w2 -
254 old_period * compute_wdiff_w1;
256 return pair->diff.wdiff;
259 static int formula_delta(struct hist_entry *he, struct hist_entry *pair,
260 char *buf, size_t size)
262 u64 he_total = he->hists->stats.total_period;
263 u64 pair_total = pair->hists->stats.total_period;
265 if (symbol_conf.filter_relative) {
266 he_total = he->hists->stats.total_non_filtered_period;
267 pair_total = pair->hists->stats.total_non_filtered_period;
269 return scnprintf(buf, size,
270 "(%" PRIu64 " * 100 / %" PRIu64 ") - "
271 "(%" PRIu64 " * 100 / %" PRIu64 ")",
272 pair->stat.period, pair_total,
273 he->stat.period, he_total);
276 static int formula_ratio(struct hist_entry *he, struct hist_entry *pair,
277 char *buf, size_t size)
279 double old_period = he->stat.period;
280 double new_period = pair->stat.period;
282 return scnprintf(buf, size, "%.0F / %.0F", new_period, old_period);
285 static int formula_wdiff(struct hist_entry *he, struct hist_entry *pair,
286 char *buf, size_t size)
288 u64 old_period = he->stat.period;
289 u64 new_period = pair->stat.period;
291 return scnprintf(buf, size,
292 "(%" PRIu64 " * " "%" PRId64 ") - (%" PRIu64 " * " "%" PRId64 ")",
293 new_period, compute_wdiff_w2, old_period, compute_wdiff_w1);
296 static int formula_fprintf(struct hist_entry *he, struct hist_entry *pair,
297 char *buf, size_t size)
301 return formula_delta(he, pair, buf, size);
303 return formula_ratio(he, pair, buf, size);
304 case COMPUTE_WEIGHTED_DIFF:
305 return formula_wdiff(he, pair, buf, size);
313 static int hists__add_entry(struct hists *hists,
314 struct addr_location *al, u64 period,
315 u64 weight, u64 transaction)
317 if (__hists__add_entry(hists, al, NULL, NULL, NULL, period, weight,
318 transaction, true) != NULL)
323 static int diff__process_sample_event(struct perf_tool *tool __maybe_unused,
324 union perf_event *event,
325 struct perf_sample *sample,
326 struct perf_evsel *evsel,
327 struct machine *machine)
329 struct addr_location al;
330 struct hists *hists = evsel__hists(evsel);
332 if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
333 pr_warning("problem processing %d event, skipping it.\n",
338 if (hists__add_entry(hists, &al, sample->period,
339 sample->weight, sample->transaction)) {
340 pr_warning("problem incrementing symbol period, skipping event\n");
345 * The total_period is updated here before going to the output
346 * tree since normally only the baseline hists will call
347 * hists__output_resort() and precompute needs the total
348 * period in order to sort entries by percentage delta.
350 hists->stats.total_period += sample->period;
352 hists->stats.total_non_filtered_period += sample->period;
357 static struct perf_tool tool = {
358 .sample = diff__process_sample_event,
359 .mmap = perf_event__process_mmap,
360 .comm = perf_event__process_comm,
361 .exit = perf_event__process_exit,
362 .fork = perf_event__process_fork,
363 .lost = perf_event__process_lost,
364 .ordered_events = true,
365 .ordering_requires_timestamps = true,
368 static struct perf_evsel *evsel_match(struct perf_evsel *evsel,
369 struct perf_evlist *evlist)
371 struct perf_evsel *e;
373 evlist__for_each(evlist, e) {
374 if (perf_evsel__match2(evsel, e))
381 static void perf_evlist__collapse_resort(struct perf_evlist *evlist)
383 struct perf_evsel *evsel;
385 evlist__for_each(evlist, evsel) {
386 struct hists *hists = evsel__hists(evsel);
388 hists__collapse_resort(hists, NULL);
392 static struct hist_entry*
393 get_pair_data(struct hist_entry *he, struct data__file *d)
395 if (hist_entry__has_pairs(he)) {
396 struct hist_entry *pair;
398 list_for_each_entry(pair, &he->pairs.head, pairs.node)
399 if (pair->hists == d->hists)
406 static struct hist_entry*
407 get_pair_fmt(struct hist_entry *he, struct diff_hpp_fmt *dfmt)
409 void *ptr = dfmt - dfmt->idx;
410 struct data__file *d = container_of(ptr, struct data__file, fmt);
412 return get_pair_data(he, d);
415 static void hists__baseline_only(struct hists *hists)
417 struct rb_root *root;
418 struct rb_node *next;
420 if (sort__need_collapse)
421 root = &hists->entries_collapsed;
423 root = hists->entries_in;
425 next = rb_first(root);
426 while (next != NULL) {
427 struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node_in);
429 next = rb_next(&he->rb_node_in);
430 if (!hist_entry__next_pair(he)) {
431 rb_erase(&he->rb_node_in, root);
432 hist_entry__free(he);
437 static void hists__precompute(struct hists *hists)
439 struct rb_root *root;
440 struct rb_node *next;
442 if (sort__need_collapse)
443 root = &hists->entries_collapsed;
445 root = hists->entries_in;
447 next = rb_first(root);
448 while (next != NULL) {
449 struct hist_entry *he, *pair;
451 he = rb_entry(next, struct hist_entry, rb_node_in);
452 next = rb_next(&he->rb_node_in);
454 pair = get_pair_data(he, &data__files[sort_compute]);
460 compute_delta(he, pair);
463 compute_ratio(he, pair);
465 case COMPUTE_WEIGHTED_DIFF:
466 compute_wdiff(he, pair);
474 static int64_t cmp_doubles(double l, double r)
485 __hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
491 double l = left->diff.period_ratio_delta;
492 double r = right->diff.period_ratio_delta;
494 return cmp_doubles(l, r);
498 double l = left->diff.period_ratio;
499 double r = right->diff.period_ratio;
501 return cmp_doubles(l, r);
503 case COMPUTE_WEIGHTED_DIFF:
505 s64 l = left->diff.wdiff;
506 s64 r = right->diff.wdiff;
518 hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
521 bool pairs_left = hist_entry__has_pairs(left);
522 bool pairs_right = hist_entry__has_pairs(right);
523 struct hist_entry *p_right, *p_left;
525 if (!pairs_left && !pairs_right)
528 if (!pairs_left || !pairs_right)
529 return pairs_left ? -1 : 1;
531 p_left = get_pair_data(left, &data__files[sort_compute]);
532 p_right = get_pair_data(right, &data__files[sort_compute]);
534 if (!p_left && !p_right)
537 if (!p_left || !p_right)
538 return p_left ? -1 : 1;
541 * We have 2 entries of same kind, let's
542 * make the data comparison.
544 return __hist_entry__cmp_compute(p_left, p_right, c);
547 static void insert_hist_entry_by_compute(struct rb_root *root,
548 struct hist_entry *he,
551 struct rb_node **p = &root->rb_node;
552 struct rb_node *parent = NULL;
553 struct hist_entry *iter;
557 iter = rb_entry(parent, struct hist_entry, rb_node);
558 if (hist_entry__cmp_compute(he, iter, c) < 0)
564 rb_link_node(&he->rb_node, parent, p);
565 rb_insert_color(&he->rb_node, root);
568 static void hists__compute_resort(struct hists *hists)
570 struct rb_root *root;
571 struct rb_node *next;
573 if (sort__need_collapse)
574 root = &hists->entries_collapsed;
576 root = hists->entries_in;
578 hists->entries = RB_ROOT;
579 next = rb_first(root);
581 hists__reset_stats(hists);
582 hists__reset_col_len(hists);
584 while (next != NULL) {
585 struct hist_entry *he;
587 he = rb_entry(next, struct hist_entry, rb_node_in);
588 next = rb_next(&he->rb_node_in);
590 insert_hist_entry_by_compute(&hists->entries, he, compute);
591 hists__inc_stats(hists, he);
594 hists__calc_col_len(hists, he);
598 static void hists__process(struct hists *hists)
600 if (show_baseline_only)
601 hists__baseline_only(hists);
604 hists__precompute(hists);
605 hists__compute_resort(hists);
607 hists__output_resort(hists);
610 hists__fprintf(hists, true, 0, 0, 0, stdout);
613 static void data__fprintf(void)
615 struct data__file *d;
618 fprintf(stdout, "# Data files:\n");
620 data__for_each_file(i, d)
621 fprintf(stdout, "# [%d] %s %s\n",
622 d->idx, d->file.path,
623 !d->idx ? "(Baseline)" : "");
625 fprintf(stdout, "#\n");
628 static void data_process(void)
630 struct perf_evlist *evlist_base = data__files[0].session->evlist;
631 struct perf_evsel *evsel_base;
634 evlist__for_each(evlist_base, evsel_base) {
635 struct hists *hists_base = evsel__hists(evsel_base);
636 struct data__file *d;
639 data__for_each_file_new(i, d) {
640 struct perf_evlist *evlist = d->session->evlist;
641 struct perf_evsel *evsel;
644 evsel = evsel_match(evsel_base, evlist);
648 hists = evsel__hists(evsel);
651 hists__match(hists_base, hists);
653 if (!show_baseline_only)
654 hists__link(hists_base, hists);
657 fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
658 perf_evsel__name(evsel_base));
662 if (verbose || data__files_cnt > 2)
665 hists__process(hists_base);
669 static void data__free(struct data__file *d)
673 for (col = 0; col < PERF_HPP_DIFF__MAX_INDEX; col++) {
674 struct diff_hpp_fmt *fmt = &d->fmt[col];
680 static int __cmd_diff(void)
682 struct data__file *d;
683 int ret = -EINVAL, i;
685 data__for_each_file(i, d) {
686 d->session = perf_session__new(&d->file, false, &tool);
688 pr_err("Failed to open %s\n", d->file.path);
693 ret = perf_session__process_events(d->session, &tool);
695 pr_err("Failed to process %s\n", d->file.path);
699 perf_evlist__collapse_resort(d->session->evlist);
705 data__for_each_file(i, d) {
707 perf_session__delete(d->session);
716 static const char * const diff_usage[] = {
717 "perf diff [<options>] [old_file] [new_file]",
721 static const struct option options[] = {
722 OPT_INCR('v', "verbose", &verbose,
723 "be more verbose (show symbol address, etc)"),
724 OPT_BOOLEAN('b', "baseline-only", &show_baseline_only,
725 "Show only items with match in baseline"),
726 OPT_CALLBACK('c', "compute", &compute,
727 "delta,ratio,wdiff:w1,w2 (default delta)",
728 "Entries differential computation selection",
730 OPT_BOOLEAN('p', "period", &show_period,
731 "Show period values."),
732 OPT_BOOLEAN('F', "formula", &show_formula,
734 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
735 "dump raw trace in ASCII"),
736 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
737 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
738 "load module symbols - WARNING: use only with -k and LIVE kernel"),
739 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
740 "only consider symbols in these dsos"),
741 OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
742 "only consider symbols in these comms"),
743 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
744 "only consider these symbols"),
745 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
746 "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
747 " Please refer the man page for the complete list."),
748 OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
749 "separator for columns, no spaces will be added between "
750 "columns '.' is reserved."),
751 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
752 "Look for files with symbols relative to this directory"),
753 OPT_UINTEGER('o', "order", &sort_compute, "Specify compute sorting."),
754 OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
755 "How to display percentage of filtered entries", parse_filter_percentage),
759 static double baseline_percent(struct hist_entry *he)
761 u64 total = hists__total_period(he->hists);
763 return 100.0 * he->stat.period / total;
766 static int hpp__color_baseline(struct perf_hpp_fmt *fmt,
767 struct perf_hpp *hpp, struct hist_entry *he)
769 struct diff_hpp_fmt *dfmt =
770 container_of(fmt, struct diff_hpp_fmt, fmt);
771 double percent = baseline_percent(he);
775 scnprintf(pfmt, 20, "%%%d.2f%%%%", dfmt->header_width - 1);
776 return percent_color_snprintf(hpp->buf, hpp->size,
779 return scnprintf(hpp->buf, hpp->size, "%*s",
780 dfmt->header_width, pfmt);
783 static int hpp__entry_baseline(struct hist_entry *he, char *buf, size_t size)
785 double percent = baseline_percent(he);
786 const char *fmt = symbol_conf.field_sep ? "%.2f" : "%6.2f%%";
790 ret = scnprintf(buf, size, fmt, percent);
795 static int __hpp__color_compare(struct perf_hpp_fmt *fmt,
796 struct perf_hpp *hpp, struct hist_entry *he,
797 int comparison_method)
799 struct diff_hpp_fmt *dfmt =
800 container_of(fmt, struct diff_hpp_fmt, fmt);
801 struct hist_entry *pair = get_pair_fmt(he, dfmt);
809 switch (comparison_method) {
811 if (pair->diff.computed)
812 diff = pair->diff.period_ratio_delta;
814 diff = compute_delta(he, pair);
816 if (fabs(diff) < 0.01)
818 scnprintf(pfmt, 20, "%%%+d.2f%%%%", dfmt->header_width - 1);
819 return percent_color_snprintf(hpp->buf, hpp->size,
824 if (pair->diff.computed)
825 diff = pair->diff.period_ratio;
827 diff = compute_ratio(he, pair);
829 scnprintf(pfmt, 20, "%%%d.6f", dfmt->header_width);
830 return value_color_snprintf(hpp->buf, hpp->size,
832 case COMPUTE_WEIGHTED_DIFF:
835 if (pair->diff.computed)
836 wdiff = pair->diff.wdiff;
838 wdiff = compute_wdiff(he, pair);
840 scnprintf(pfmt, 20, "%%14ld", dfmt->header_width);
841 return color_snprintf(hpp->buf, hpp->size,
842 get_percent_color(wdiff),
848 return scnprintf(hpp->buf, hpp->size, "%*s",
849 dfmt->header_width, pfmt);
852 static int hpp__color_delta(struct perf_hpp_fmt *fmt,
853 struct perf_hpp *hpp, struct hist_entry *he)
855 return __hpp__color_compare(fmt, hpp, he, COMPUTE_DELTA);
858 static int hpp__color_ratio(struct perf_hpp_fmt *fmt,
859 struct perf_hpp *hpp, struct hist_entry *he)
861 return __hpp__color_compare(fmt, hpp, he, COMPUTE_RATIO);
864 static int hpp__color_wdiff(struct perf_hpp_fmt *fmt,
865 struct perf_hpp *hpp, struct hist_entry *he)
867 return __hpp__color_compare(fmt, hpp, he, COMPUTE_WEIGHTED_DIFF);
871 hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size)
874 case PERF_HPP_DIFF__PERIOD_BASELINE:
875 scnprintf(buf, size, "%" PRIu64, he->stat.period);
884 hpp__entry_pair(struct hist_entry *he, struct hist_entry *pair,
885 int idx, char *buf, size_t size)
892 case PERF_HPP_DIFF__DELTA:
893 if (pair->diff.computed)
894 diff = pair->diff.period_ratio_delta;
896 diff = compute_delta(he, pair);
898 if (fabs(diff) >= 0.01)
899 scnprintf(buf, size, "%+4.2F%%", diff);
902 case PERF_HPP_DIFF__RATIO:
903 /* No point for ratio number if we are dummy.. */
907 if (pair->diff.computed)
908 ratio = pair->diff.period_ratio;
910 ratio = compute_ratio(he, pair);
913 scnprintf(buf, size, "%14.6F", ratio);
916 case PERF_HPP_DIFF__WEIGHTED_DIFF:
917 /* No point for wdiff number if we are dummy.. */
921 if (pair->diff.computed)
922 wdiff = pair->diff.wdiff;
924 wdiff = compute_wdiff(he, pair);
927 scnprintf(buf, size, "%14ld", wdiff);
930 case PERF_HPP_DIFF__FORMULA:
931 formula_fprintf(he, pair, buf, size);
934 case PERF_HPP_DIFF__PERIOD:
935 scnprintf(buf, size, "%" PRIu64, pair->stat.period);
944 __hpp__entry_global(struct hist_entry *he, struct diff_hpp_fmt *dfmt,
945 char *buf, size_t size)
947 struct hist_entry *pair = get_pair_fmt(he, dfmt);
950 /* baseline is special */
951 if (idx == PERF_HPP_DIFF__BASELINE)
952 hpp__entry_baseline(he, buf, size);
955 hpp__entry_pair(he, pair, idx, buf, size);
957 hpp__entry_unpair(he, idx, buf, size);
961 static int hpp__entry_global(struct perf_hpp_fmt *_fmt, struct perf_hpp *hpp,
962 struct hist_entry *he)
964 struct diff_hpp_fmt *dfmt =
965 container_of(_fmt, struct diff_hpp_fmt, fmt);
966 char buf[MAX_COL_WIDTH] = " ";
968 __hpp__entry_global(he, dfmt, buf, MAX_COL_WIDTH);
970 if (symbol_conf.field_sep)
971 return scnprintf(hpp->buf, hpp->size, "%s", buf);
973 return scnprintf(hpp->buf, hpp->size, "%*s",
974 dfmt->header_width, buf);
977 static int hpp__header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
978 struct perf_evsel *evsel __maybe_unused)
980 struct diff_hpp_fmt *dfmt =
981 container_of(fmt, struct diff_hpp_fmt, fmt);
983 BUG_ON(!dfmt->header);
984 return scnprintf(hpp->buf, hpp->size, dfmt->header);
987 static int hpp__width(struct perf_hpp_fmt *fmt,
988 struct perf_hpp *hpp __maybe_unused,
989 struct perf_evsel *evsel __maybe_unused)
991 struct diff_hpp_fmt *dfmt =
992 container_of(fmt, struct diff_hpp_fmt, fmt);
994 BUG_ON(dfmt->header_width <= 0);
995 return dfmt->header_width;
998 static void init_header(struct data__file *d, struct diff_hpp_fmt *dfmt)
1000 #define MAX_HEADER_NAME 100
1001 char buf_indent[MAX_HEADER_NAME];
1002 char buf[MAX_HEADER_NAME];
1003 const char *header = NULL;
1006 BUG_ON(dfmt->idx >= PERF_HPP_DIFF__MAX_INDEX);
1007 header = columns[dfmt->idx].name;
1008 width = columns[dfmt->idx].width;
1010 /* Only our defined HPP fmts should appear here. */
1013 if (data__files_cnt > 2)
1014 scnprintf(buf, MAX_HEADER_NAME, "%s/%d", header, d->idx);
1016 #define NAME (data__files_cnt > 2 ? buf : header)
1017 dfmt->header_width = width;
1018 width = (int) strlen(NAME);
1019 if (dfmt->header_width < width)
1020 dfmt->header_width = width;
1022 scnprintf(buf_indent, MAX_HEADER_NAME, "%*s",
1023 dfmt->header_width, NAME);
1025 dfmt->header = strdup(buf_indent);
1026 #undef MAX_HEADER_NAME
1030 static void data__hpp_register(struct data__file *d, int idx)
1032 struct diff_hpp_fmt *dfmt = &d->fmt[idx];
1033 struct perf_hpp_fmt *fmt = &dfmt->fmt;
1037 fmt->header = hpp__header;
1038 fmt->width = hpp__width;
1039 fmt->entry = hpp__entry_global;
1041 /* TODO more colors */
1043 case PERF_HPP_DIFF__BASELINE:
1044 fmt->color = hpp__color_baseline;
1046 case PERF_HPP_DIFF__DELTA:
1047 fmt->color = hpp__color_delta;
1049 case PERF_HPP_DIFF__RATIO:
1050 fmt->color = hpp__color_ratio;
1052 case PERF_HPP_DIFF__WEIGHTED_DIFF:
1053 fmt->color = hpp__color_wdiff;
1059 init_header(d, dfmt);
1060 perf_hpp__column_register(fmt);
1063 static void ui_init(void)
1065 struct data__file *d;
1068 data__for_each_file(i, d) {
1071 * Baseline or compute realted columns:
1073 * PERF_HPP_DIFF__BASELINE
1074 * PERF_HPP_DIFF__DELTA
1075 * PERF_HPP_DIFF__RATIO
1076 * PERF_HPP_DIFF__WEIGHTED_DIFF
1078 data__hpp_register(d, i ? compute_2_hpp[compute] :
1079 PERF_HPP_DIFF__BASELINE);
1084 * PERF_HPP_DIFF__FORMULA
1085 * PERF_HPP_DIFF__PERIOD
1086 * PERF_HPP_DIFF__PERIOD_BASELINE
1088 if (show_formula && i)
1089 data__hpp_register(d, PERF_HPP_DIFF__FORMULA);
1092 data__hpp_register(d, i ? PERF_HPP_DIFF__PERIOD :
1093 PERF_HPP_DIFF__PERIOD_BASELINE);
1097 static int data_init(int argc, const char **argv)
1099 struct data__file *d;
1100 static const char *defaults[] = {
1104 bool use_default = true;
1107 data__files_cnt = 2;
1111 defaults[1] = argv[0];
1113 data__files_cnt = argc;
1114 use_default = false;
1116 } else if (perf_guest) {
1117 defaults[0] = "perf.data.host";
1118 defaults[1] = "perf.data.guest";
1121 if (sort_compute >= (unsigned int) data__files_cnt) {
1122 pr_err("Order option out of limit.\n");
1126 data__files = zalloc(sizeof(*data__files) * data__files_cnt);
1130 data__for_each_file(i, d) {
1131 struct perf_data_file *file = &d->file;
1133 file->path = use_default ? defaults[i] : argv[i];
1134 file->mode = PERF_DATA_MODE_READ,
1135 file->force = force,
1143 int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused)
1145 int ret = hists__init();
1150 perf_config(perf_default_config, NULL);
1152 argc = parse_options(argc, argv, options, diff_usage, 0);
1154 if (symbol__init(NULL) < 0)
1157 if (data_init(argc, argv) < 0)
1162 sort__mode = SORT_MODE__DIFF;
1164 if (setup_sorting() < 0)
1165 usage_with_options(diff_usage, options);
1169 sort__setup_elide(NULL);
1171 return __cmd_diff();