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 .mmap2 = perf_event__process_mmap2,
361 .comm = perf_event__process_comm,
362 .exit = perf_event__process_exit,
363 .fork = perf_event__process_fork,
364 .lost = perf_event__process_lost,
365 .ordered_events = true,
366 .ordering_requires_timestamps = true,
369 static struct perf_evsel *evsel_match(struct perf_evsel *evsel,
370 struct perf_evlist *evlist)
372 struct perf_evsel *e;
374 evlist__for_each(evlist, e) {
375 if (perf_evsel__match2(evsel, e))
382 static void perf_evlist__collapse_resort(struct perf_evlist *evlist)
384 struct perf_evsel *evsel;
386 evlist__for_each(evlist, evsel) {
387 struct hists *hists = evsel__hists(evsel);
389 hists__collapse_resort(hists, NULL);
393 static struct hist_entry*
394 get_pair_data(struct hist_entry *he, struct data__file *d)
396 if (hist_entry__has_pairs(he)) {
397 struct hist_entry *pair;
399 list_for_each_entry(pair, &he->pairs.head, pairs.node)
400 if (pair->hists == d->hists)
407 static struct hist_entry*
408 get_pair_fmt(struct hist_entry *he, struct diff_hpp_fmt *dfmt)
410 void *ptr = dfmt - dfmt->idx;
411 struct data__file *d = container_of(ptr, struct data__file, fmt);
413 return get_pair_data(he, d);
416 static void hists__baseline_only(struct hists *hists)
418 struct rb_root *root;
419 struct rb_node *next;
421 if (sort__need_collapse)
422 root = &hists->entries_collapsed;
424 root = hists->entries_in;
426 next = rb_first(root);
427 while (next != NULL) {
428 struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node_in);
430 next = rb_next(&he->rb_node_in);
431 if (!hist_entry__next_pair(he)) {
432 rb_erase(&he->rb_node_in, root);
433 hist_entry__free(he);
438 static void hists__precompute(struct hists *hists)
440 struct rb_root *root;
441 struct rb_node *next;
443 if (sort__need_collapse)
444 root = &hists->entries_collapsed;
446 root = hists->entries_in;
448 next = rb_first(root);
449 while (next != NULL) {
450 struct hist_entry *he, *pair;
452 he = rb_entry(next, struct hist_entry, rb_node_in);
453 next = rb_next(&he->rb_node_in);
455 pair = get_pair_data(he, &data__files[sort_compute]);
461 compute_delta(he, pair);
464 compute_ratio(he, pair);
466 case COMPUTE_WEIGHTED_DIFF:
467 compute_wdiff(he, pair);
475 static int64_t cmp_doubles(double l, double r)
486 __hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
492 double l = left->diff.period_ratio_delta;
493 double r = right->diff.period_ratio_delta;
495 return cmp_doubles(l, r);
499 double l = left->diff.period_ratio;
500 double r = right->diff.period_ratio;
502 return cmp_doubles(l, r);
504 case COMPUTE_WEIGHTED_DIFF:
506 s64 l = left->diff.wdiff;
507 s64 r = right->diff.wdiff;
519 hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
522 bool pairs_left = hist_entry__has_pairs(left);
523 bool pairs_right = hist_entry__has_pairs(right);
524 struct hist_entry *p_right, *p_left;
526 if (!pairs_left && !pairs_right)
529 if (!pairs_left || !pairs_right)
530 return pairs_left ? -1 : 1;
532 p_left = get_pair_data(left, &data__files[sort_compute]);
533 p_right = get_pair_data(right, &data__files[sort_compute]);
535 if (!p_left && !p_right)
538 if (!p_left || !p_right)
539 return p_left ? -1 : 1;
542 * We have 2 entries of same kind, let's
543 * make the data comparison.
545 return __hist_entry__cmp_compute(p_left, p_right, c);
548 static void insert_hist_entry_by_compute(struct rb_root *root,
549 struct hist_entry *he,
552 struct rb_node **p = &root->rb_node;
553 struct rb_node *parent = NULL;
554 struct hist_entry *iter;
558 iter = rb_entry(parent, struct hist_entry, rb_node);
559 if (hist_entry__cmp_compute(he, iter, c) < 0)
565 rb_link_node(&he->rb_node, parent, p);
566 rb_insert_color(&he->rb_node, root);
569 static void hists__compute_resort(struct hists *hists)
571 struct rb_root *root;
572 struct rb_node *next;
574 if (sort__need_collapse)
575 root = &hists->entries_collapsed;
577 root = hists->entries_in;
579 hists->entries = RB_ROOT;
580 next = rb_first(root);
582 hists__reset_stats(hists);
583 hists__reset_col_len(hists);
585 while (next != NULL) {
586 struct hist_entry *he;
588 he = rb_entry(next, struct hist_entry, rb_node_in);
589 next = rb_next(&he->rb_node_in);
591 insert_hist_entry_by_compute(&hists->entries, he, compute);
592 hists__inc_stats(hists, he);
595 hists__calc_col_len(hists, he);
599 static void hists__process(struct hists *hists)
601 if (show_baseline_only)
602 hists__baseline_only(hists);
605 hists__precompute(hists);
606 hists__compute_resort(hists);
608 hists__output_resort(hists);
611 hists__fprintf(hists, true, 0, 0, 0, stdout);
614 static void data__fprintf(void)
616 struct data__file *d;
619 fprintf(stdout, "# Data files:\n");
621 data__for_each_file(i, d)
622 fprintf(stdout, "# [%d] %s %s\n",
623 d->idx, d->file.path,
624 !d->idx ? "(Baseline)" : "");
626 fprintf(stdout, "#\n");
629 static void data_process(void)
631 struct perf_evlist *evlist_base = data__files[0].session->evlist;
632 struct perf_evsel *evsel_base;
635 evlist__for_each(evlist_base, evsel_base) {
636 struct hists *hists_base = evsel__hists(evsel_base);
637 struct data__file *d;
640 data__for_each_file_new(i, d) {
641 struct perf_evlist *evlist = d->session->evlist;
642 struct perf_evsel *evsel;
645 evsel = evsel_match(evsel_base, evlist);
649 hists = evsel__hists(evsel);
652 hists__match(hists_base, hists);
654 if (!show_baseline_only)
655 hists__link(hists_base, hists);
658 fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
659 perf_evsel__name(evsel_base));
663 if (verbose || data__files_cnt > 2)
666 hists__process(hists_base);
670 static void data__free(struct data__file *d)
674 for (col = 0; col < PERF_HPP_DIFF__MAX_INDEX; col++) {
675 struct diff_hpp_fmt *fmt = &d->fmt[col];
681 static int __cmd_diff(void)
683 struct data__file *d;
684 int ret = -EINVAL, i;
686 data__for_each_file(i, d) {
687 d->session = perf_session__new(&d->file, false, &tool);
689 pr_err("Failed to open %s\n", d->file.path);
694 ret = perf_session__process_events(d->session, &tool);
696 pr_err("Failed to process %s\n", d->file.path);
700 perf_evlist__collapse_resort(d->session->evlist);
706 data__for_each_file(i, d) {
708 perf_session__delete(d->session);
717 static const char * const diff_usage[] = {
718 "perf diff [<options>] [old_file] [new_file]",
722 static const struct option options[] = {
723 OPT_INCR('v', "verbose", &verbose,
724 "be more verbose (show symbol address, etc)"),
725 OPT_BOOLEAN('b', "baseline-only", &show_baseline_only,
726 "Show only items with match in baseline"),
727 OPT_CALLBACK('c', "compute", &compute,
728 "delta,ratio,wdiff:w1,w2 (default delta)",
729 "Entries differential computation selection",
731 OPT_BOOLEAN('p', "period", &show_period,
732 "Show period values."),
733 OPT_BOOLEAN('F', "formula", &show_formula,
735 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
736 "dump raw trace in ASCII"),
737 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
738 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
739 "load module symbols - WARNING: use only with -k and LIVE kernel"),
740 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
741 "only consider symbols in these dsos"),
742 OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
743 "only consider symbols in these comms"),
744 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
745 "only consider these symbols"),
746 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
747 "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
748 " Please refer the man page for the complete list."),
749 OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
750 "separator for columns, no spaces will be added between "
751 "columns '.' is reserved."),
752 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
753 "Look for files with symbols relative to this directory"),
754 OPT_UINTEGER('o', "order", &sort_compute, "Specify compute sorting."),
755 OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
756 "How to display percentage of filtered entries", parse_filter_percentage),
760 static double baseline_percent(struct hist_entry *he)
762 u64 total = hists__total_period(he->hists);
764 return 100.0 * he->stat.period / total;
767 static int hpp__color_baseline(struct perf_hpp_fmt *fmt,
768 struct perf_hpp *hpp, struct hist_entry *he)
770 struct diff_hpp_fmt *dfmt =
771 container_of(fmt, struct diff_hpp_fmt, fmt);
772 double percent = baseline_percent(he);
776 scnprintf(pfmt, 20, "%%%d.2f%%%%", dfmt->header_width - 1);
777 return percent_color_snprintf(hpp->buf, hpp->size,
780 return scnprintf(hpp->buf, hpp->size, "%*s",
781 dfmt->header_width, pfmt);
784 static int hpp__entry_baseline(struct hist_entry *he, char *buf, size_t size)
786 double percent = baseline_percent(he);
787 const char *fmt = symbol_conf.field_sep ? "%.2f" : "%6.2f%%";
791 ret = scnprintf(buf, size, fmt, percent);
796 static int __hpp__color_compare(struct perf_hpp_fmt *fmt,
797 struct perf_hpp *hpp, struct hist_entry *he,
798 int comparison_method)
800 struct diff_hpp_fmt *dfmt =
801 container_of(fmt, struct diff_hpp_fmt, fmt);
802 struct hist_entry *pair = get_pair_fmt(he, dfmt);
810 switch (comparison_method) {
812 if (pair->diff.computed)
813 diff = pair->diff.period_ratio_delta;
815 diff = compute_delta(he, pair);
817 if (fabs(diff) < 0.01)
819 scnprintf(pfmt, 20, "%%%+d.2f%%%%", dfmt->header_width - 1);
820 return percent_color_snprintf(hpp->buf, hpp->size,
825 if (pair->diff.computed)
826 diff = pair->diff.period_ratio;
828 diff = compute_ratio(he, pair);
830 scnprintf(pfmt, 20, "%%%d.6f", dfmt->header_width);
831 return value_color_snprintf(hpp->buf, hpp->size,
833 case COMPUTE_WEIGHTED_DIFF:
836 if (pair->diff.computed)
837 wdiff = pair->diff.wdiff;
839 wdiff = compute_wdiff(he, pair);
841 scnprintf(pfmt, 20, "%%14ld", dfmt->header_width);
842 return color_snprintf(hpp->buf, hpp->size,
843 get_percent_color(wdiff),
849 return scnprintf(hpp->buf, hpp->size, "%*s",
850 dfmt->header_width, pfmt);
853 static int hpp__color_delta(struct perf_hpp_fmt *fmt,
854 struct perf_hpp *hpp, struct hist_entry *he)
856 return __hpp__color_compare(fmt, hpp, he, COMPUTE_DELTA);
859 static int hpp__color_ratio(struct perf_hpp_fmt *fmt,
860 struct perf_hpp *hpp, struct hist_entry *he)
862 return __hpp__color_compare(fmt, hpp, he, COMPUTE_RATIO);
865 static int hpp__color_wdiff(struct perf_hpp_fmt *fmt,
866 struct perf_hpp *hpp, struct hist_entry *he)
868 return __hpp__color_compare(fmt, hpp, he, COMPUTE_WEIGHTED_DIFF);
872 hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size)
875 case PERF_HPP_DIFF__PERIOD_BASELINE:
876 scnprintf(buf, size, "%" PRIu64, he->stat.period);
885 hpp__entry_pair(struct hist_entry *he, struct hist_entry *pair,
886 int idx, char *buf, size_t size)
893 case PERF_HPP_DIFF__DELTA:
894 if (pair->diff.computed)
895 diff = pair->diff.period_ratio_delta;
897 diff = compute_delta(he, pair);
899 if (fabs(diff) >= 0.01)
900 scnprintf(buf, size, "%+4.2F%%", diff);
903 case PERF_HPP_DIFF__RATIO:
904 /* No point for ratio number if we are dummy.. */
908 if (pair->diff.computed)
909 ratio = pair->diff.period_ratio;
911 ratio = compute_ratio(he, pair);
914 scnprintf(buf, size, "%14.6F", ratio);
917 case PERF_HPP_DIFF__WEIGHTED_DIFF:
918 /* No point for wdiff number if we are dummy.. */
922 if (pair->diff.computed)
923 wdiff = pair->diff.wdiff;
925 wdiff = compute_wdiff(he, pair);
928 scnprintf(buf, size, "%14ld", wdiff);
931 case PERF_HPP_DIFF__FORMULA:
932 formula_fprintf(he, pair, buf, size);
935 case PERF_HPP_DIFF__PERIOD:
936 scnprintf(buf, size, "%" PRIu64, pair->stat.period);
945 __hpp__entry_global(struct hist_entry *he, struct diff_hpp_fmt *dfmt,
946 char *buf, size_t size)
948 struct hist_entry *pair = get_pair_fmt(he, dfmt);
951 /* baseline is special */
952 if (idx == PERF_HPP_DIFF__BASELINE)
953 hpp__entry_baseline(he, buf, size);
956 hpp__entry_pair(he, pair, idx, buf, size);
958 hpp__entry_unpair(he, idx, buf, size);
962 static int hpp__entry_global(struct perf_hpp_fmt *_fmt, struct perf_hpp *hpp,
963 struct hist_entry *he)
965 struct diff_hpp_fmt *dfmt =
966 container_of(_fmt, struct diff_hpp_fmt, fmt);
967 char buf[MAX_COL_WIDTH] = " ";
969 __hpp__entry_global(he, dfmt, buf, MAX_COL_WIDTH);
971 if (symbol_conf.field_sep)
972 return scnprintf(hpp->buf, hpp->size, "%s", buf);
974 return scnprintf(hpp->buf, hpp->size, "%*s",
975 dfmt->header_width, buf);
978 static int hpp__header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
979 struct perf_evsel *evsel __maybe_unused)
981 struct diff_hpp_fmt *dfmt =
982 container_of(fmt, struct diff_hpp_fmt, fmt);
984 BUG_ON(!dfmt->header);
985 return scnprintf(hpp->buf, hpp->size, dfmt->header);
988 static int hpp__width(struct perf_hpp_fmt *fmt,
989 struct perf_hpp *hpp __maybe_unused,
990 struct perf_evsel *evsel __maybe_unused)
992 struct diff_hpp_fmt *dfmt =
993 container_of(fmt, struct diff_hpp_fmt, fmt);
995 BUG_ON(dfmt->header_width <= 0);
996 return dfmt->header_width;
999 static void init_header(struct data__file *d, struct diff_hpp_fmt *dfmt)
1001 #define MAX_HEADER_NAME 100
1002 char buf_indent[MAX_HEADER_NAME];
1003 char buf[MAX_HEADER_NAME];
1004 const char *header = NULL;
1007 BUG_ON(dfmt->idx >= PERF_HPP_DIFF__MAX_INDEX);
1008 header = columns[dfmt->idx].name;
1009 width = columns[dfmt->idx].width;
1011 /* Only our defined HPP fmts should appear here. */
1014 if (data__files_cnt > 2)
1015 scnprintf(buf, MAX_HEADER_NAME, "%s/%d", header, d->idx);
1017 #define NAME (data__files_cnt > 2 ? buf : header)
1018 dfmt->header_width = width;
1019 width = (int) strlen(NAME);
1020 if (dfmt->header_width < width)
1021 dfmt->header_width = width;
1023 scnprintf(buf_indent, MAX_HEADER_NAME, "%*s",
1024 dfmt->header_width, NAME);
1026 dfmt->header = strdup(buf_indent);
1027 #undef MAX_HEADER_NAME
1031 static void data__hpp_register(struct data__file *d, int idx)
1033 struct diff_hpp_fmt *dfmt = &d->fmt[idx];
1034 struct perf_hpp_fmt *fmt = &dfmt->fmt;
1038 fmt->header = hpp__header;
1039 fmt->width = hpp__width;
1040 fmt->entry = hpp__entry_global;
1042 /* TODO more colors */
1044 case PERF_HPP_DIFF__BASELINE:
1045 fmt->color = hpp__color_baseline;
1047 case PERF_HPP_DIFF__DELTA:
1048 fmt->color = hpp__color_delta;
1050 case PERF_HPP_DIFF__RATIO:
1051 fmt->color = hpp__color_ratio;
1053 case PERF_HPP_DIFF__WEIGHTED_DIFF:
1054 fmt->color = hpp__color_wdiff;
1060 init_header(d, dfmt);
1061 perf_hpp__column_register(fmt);
1064 static void ui_init(void)
1066 struct data__file *d;
1069 data__for_each_file(i, d) {
1072 * Baseline or compute realted columns:
1074 * PERF_HPP_DIFF__BASELINE
1075 * PERF_HPP_DIFF__DELTA
1076 * PERF_HPP_DIFF__RATIO
1077 * PERF_HPP_DIFF__WEIGHTED_DIFF
1079 data__hpp_register(d, i ? compute_2_hpp[compute] :
1080 PERF_HPP_DIFF__BASELINE);
1085 * PERF_HPP_DIFF__FORMULA
1086 * PERF_HPP_DIFF__PERIOD
1087 * PERF_HPP_DIFF__PERIOD_BASELINE
1089 if (show_formula && i)
1090 data__hpp_register(d, PERF_HPP_DIFF__FORMULA);
1093 data__hpp_register(d, i ? PERF_HPP_DIFF__PERIOD :
1094 PERF_HPP_DIFF__PERIOD_BASELINE);
1098 static int data_init(int argc, const char **argv)
1100 struct data__file *d;
1101 static const char *defaults[] = {
1105 bool use_default = true;
1108 data__files_cnt = 2;
1112 defaults[1] = argv[0];
1114 data__files_cnt = argc;
1115 use_default = false;
1117 } else if (perf_guest) {
1118 defaults[0] = "perf.data.host";
1119 defaults[1] = "perf.data.guest";
1122 if (sort_compute >= (unsigned int) data__files_cnt) {
1123 pr_err("Order option out of limit.\n");
1127 data__files = zalloc(sizeof(*data__files) * data__files_cnt);
1131 data__for_each_file(i, d) {
1132 struct perf_data_file *file = &d->file;
1134 file->path = use_default ? defaults[i] : argv[i];
1135 file->mode = PERF_DATA_MODE_READ,
1136 file->force = force,
1144 int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused)
1146 int ret = hists__init();
1151 perf_config(perf_default_config, NULL);
1153 argc = parse_options(argc, argv, options, diff_usage, 0);
1155 if (symbol__init(NULL) < 0)
1158 if (data_init(argc, argv) < 0)
1163 sort__mode = SORT_MODE__DIFF;
1165 if (setup_sorting() < 0)
1166 usage_with_options(diff_usage, options);
1170 sort__setup_elide(NULL);
1172 return __cmd_diff();