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 data__file *fmt_to_data_file(struct perf_hpp_fmt *fmt)
395 struct diff_hpp_fmt *dfmt = container_of(fmt, struct diff_hpp_fmt, fmt);
396 void *ptr = dfmt - dfmt->idx;
397 struct data__file *d = container_of(ptr, struct data__file, fmt);
402 static struct hist_entry*
403 get_pair_data(struct hist_entry *he, struct data__file *d)
405 if (hist_entry__has_pairs(he)) {
406 struct hist_entry *pair;
408 list_for_each_entry(pair, &he->pairs.head, pairs.node)
409 if (pair->hists == d->hists)
416 static struct hist_entry*
417 get_pair_fmt(struct hist_entry *he, struct diff_hpp_fmt *dfmt)
419 struct data__file *d = fmt_to_data_file(&dfmt->fmt);
421 return get_pair_data(he, d);
424 static void hists__baseline_only(struct hists *hists)
426 struct rb_root *root;
427 struct rb_node *next;
429 if (sort__need_collapse)
430 root = &hists->entries_collapsed;
432 root = hists->entries_in;
434 next = rb_first(root);
435 while (next != NULL) {
436 struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node_in);
438 next = rb_next(&he->rb_node_in);
439 if (!hist_entry__next_pair(he)) {
440 rb_erase(&he->rb_node_in, root);
441 hist_entry__delete(he);
446 static void hists__precompute(struct hists *hists)
448 struct rb_root *root;
449 struct rb_node *next;
451 if (sort__need_collapse)
452 root = &hists->entries_collapsed;
454 root = hists->entries_in;
456 next = rb_first(root);
457 while (next != NULL) {
458 struct hist_entry *he, *pair;
459 struct data__file *d;
462 he = rb_entry(next, struct hist_entry, rb_node_in);
463 next = rb_next(&he->rb_node_in);
465 data__for_each_file_new(i, d) {
466 pair = get_pair_data(he, d);
472 compute_delta(he, pair);
475 compute_ratio(he, pair);
477 case COMPUTE_WEIGHTED_DIFF:
478 compute_wdiff(he, pair);
487 static int64_t cmp_doubles(double l, double r)
498 __hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
504 double l = left->diff.period_ratio_delta;
505 double r = right->diff.period_ratio_delta;
507 return cmp_doubles(l, r);
511 double l = left->diff.period_ratio;
512 double r = right->diff.period_ratio;
514 return cmp_doubles(l, r);
516 case COMPUTE_WEIGHTED_DIFF:
518 s64 l = left->diff.wdiff;
519 s64 r = right->diff.wdiff;
531 hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
534 bool pairs_left = hist_entry__has_pairs(left);
535 bool pairs_right = hist_entry__has_pairs(right);
536 struct hist_entry *p_right, *p_left;
538 if (!pairs_left && !pairs_right)
541 if (!pairs_left || !pairs_right)
542 return pairs_left ? -1 : 1;
544 p_left = get_pair_data(left, &data__files[sort_idx]);
545 p_right = get_pair_data(right, &data__files[sort_idx]);
547 if (!p_left && !p_right)
550 if (!p_left || !p_right)
551 return p_left ? -1 : 1;
554 * We have 2 entries of same kind, let's
555 * make the data comparison.
557 return __hist_entry__cmp_compute(p_left, p_right, c);
561 hist_entry__cmp_compute_idx(struct hist_entry *left, struct hist_entry *right,
564 struct hist_entry *p_right, *p_left;
566 p_left = get_pair_data(left, &data__files[sort_idx]);
567 p_right = get_pair_data(right, &data__files[sort_idx]);
569 if (!p_left && !p_right)
572 if (!p_left || !p_right)
573 return p_left ? -1 : 1;
575 if (c != COMPUTE_DELTA) {
577 * The delta can be computed without the baseline, but
578 * others are not. Put those entries which have no
581 if (left->dummy && right->dummy)
584 if (left->dummy || right->dummy)
585 return left->dummy ? 1 : -1;
588 return __hist_entry__cmp_compute(p_left, p_right, c);
592 hist_entry__cmp_nop(struct perf_hpp_fmt *fmt __maybe_unused,
593 struct hist_entry *left __maybe_unused,
594 struct hist_entry *right __maybe_unused)
600 hist_entry__cmp_baseline(struct perf_hpp_fmt *fmt __maybe_unused,
601 struct hist_entry *left, struct hist_entry *right)
603 if (left->stat.period == right->stat.period)
605 return left->stat.period > right->stat.period ? 1 : -1;
609 hist_entry__cmp_delta(struct perf_hpp_fmt *fmt,
610 struct hist_entry *left, struct hist_entry *right)
612 struct data__file *d = fmt_to_data_file(fmt);
614 return hist_entry__cmp_compute(right, left, COMPUTE_DELTA, d->idx);
618 hist_entry__cmp_ratio(struct perf_hpp_fmt *fmt,
619 struct hist_entry *left, struct hist_entry *right)
621 struct data__file *d = fmt_to_data_file(fmt);
623 return hist_entry__cmp_compute(right, left, COMPUTE_RATIO, d->idx);
627 hist_entry__cmp_wdiff(struct perf_hpp_fmt *fmt,
628 struct hist_entry *left, struct hist_entry *right)
630 struct data__file *d = fmt_to_data_file(fmt);
632 return hist_entry__cmp_compute(right, left, COMPUTE_WEIGHTED_DIFF, d->idx);
636 hist_entry__cmp_delta_idx(struct perf_hpp_fmt *fmt __maybe_unused,
637 struct hist_entry *left, struct hist_entry *right)
639 return hist_entry__cmp_compute_idx(right, left, COMPUTE_DELTA,
644 hist_entry__cmp_ratio_idx(struct perf_hpp_fmt *fmt __maybe_unused,
645 struct hist_entry *left, struct hist_entry *right)
647 return hist_entry__cmp_compute_idx(right, left, COMPUTE_RATIO,
652 hist_entry__cmp_wdiff_idx(struct perf_hpp_fmt *fmt __maybe_unused,
653 struct hist_entry *left, struct hist_entry *right)
655 return hist_entry__cmp_compute_idx(right, left, COMPUTE_WEIGHTED_DIFF,
659 static void hists__process(struct hists *hists)
661 if (show_baseline_only)
662 hists__baseline_only(hists);
664 hists__precompute(hists);
665 hists__output_resort(hists, NULL);
667 hists__fprintf(hists, true, 0, 0, 0, stdout);
670 static void data__fprintf(void)
672 struct data__file *d;
675 fprintf(stdout, "# Data files:\n");
677 data__for_each_file(i, d)
678 fprintf(stdout, "# [%d] %s %s\n",
679 d->idx, d->file.path,
680 !d->idx ? "(Baseline)" : "");
682 fprintf(stdout, "#\n");
685 static void data_process(void)
687 struct perf_evlist *evlist_base = data__files[0].session->evlist;
688 struct perf_evsel *evsel_base;
691 evlist__for_each(evlist_base, evsel_base) {
692 struct hists *hists_base = evsel__hists(evsel_base);
693 struct data__file *d;
696 data__for_each_file_new(i, d) {
697 struct perf_evlist *evlist = d->session->evlist;
698 struct perf_evsel *evsel;
701 evsel = evsel_match(evsel_base, evlist);
705 hists = evsel__hists(evsel);
708 hists__match(hists_base, hists);
710 if (!show_baseline_only)
711 hists__link(hists_base, hists);
714 fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
715 perf_evsel__name(evsel_base));
719 if (verbose || data__files_cnt > 2)
722 hists__process(hists_base);
726 static void data__free(struct data__file *d)
730 for (col = 0; col < PERF_HPP_DIFF__MAX_INDEX; col++) {
731 struct diff_hpp_fmt *fmt = &d->fmt[col];
737 static int __cmd_diff(void)
739 struct data__file *d;
740 int ret = -EINVAL, i;
742 data__for_each_file(i, d) {
743 d->session = perf_session__new(&d->file, false, &tool);
745 pr_err("Failed to open %s\n", d->file.path);
750 ret = perf_session__process_events(d->session, &tool);
752 pr_err("Failed to process %s\n", d->file.path);
756 perf_evlist__collapse_resort(d->session->evlist);
762 data__for_each_file(i, d) {
764 perf_session__delete(d->session);
773 static const char * const diff_usage[] = {
774 "perf diff [<options>] [old_file] [new_file]",
778 static const struct option options[] = {
779 OPT_INCR('v', "verbose", &verbose,
780 "be more verbose (show symbol address, etc)"),
781 OPT_BOOLEAN('b', "baseline-only", &show_baseline_only,
782 "Show only items with match in baseline"),
783 OPT_CALLBACK('c', "compute", &compute,
784 "delta,ratio,wdiff:w1,w2 (default delta)",
785 "Entries differential computation selection",
787 OPT_BOOLEAN('p', "period", &show_period,
788 "Show period values."),
789 OPT_BOOLEAN('F', "formula", &show_formula,
791 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
792 "dump raw trace in ASCII"),
793 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
794 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
795 "load module symbols - WARNING: use only with -k and LIVE kernel"),
796 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
797 "only consider symbols in these dsos"),
798 OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
799 "only consider symbols in these comms"),
800 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
801 "only consider these symbols"),
802 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
803 "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
804 " Please refer the man page for the complete list."),
805 OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
806 "separator for columns, no spaces will be added between "
807 "columns '.' is reserved."),
808 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
809 "Look for files with symbols relative to this directory"),
810 OPT_UINTEGER('o', "order", &sort_compute, "Specify compute sorting."),
811 OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
812 "How to display percentage of filtered entries", parse_filter_percentage),
816 static double baseline_percent(struct hist_entry *he)
818 u64 total = hists__total_period(he->hists);
820 return 100.0 * he->stat.period / total;
823 static int hpp__color_baseline(struct perf_hpp_fmt *fmt,
824 struct perf_hpp *hpp, struct hist_entry *he)
826 struct diff_hpp_fmt *dfmt =
827 container_of(fmt, struct diff_hpp_fmt, fmt);
828 double percent = baseline_percent(he);
832 scnprintf(pfmt, 20, "%%%d.2f%%%%", dfmt->header_width - 1);
833 return percent_color_snprintf(hpp->buf, hpp->size,
836 return scnprintf(hpp->buf, hpp->size, "%*s",
837 dfmt->header_width, pfmt);
840 static int hpp__entry_baseline(struct hist_entry *he, char *buf, size_t size)
842 double percent = baseline_percent(he);
843 const char *fmt = symbol_conf.field_sep ? "%.2f" : "%6.2f%%";
847 ret = scnprintf(buf, size, fmt, percent);
852 static int __hpp__color_compare(struct perf_hpp_fmt *fmt,
853 struct perf_hpp *hpp, struct hist_entry *he,
854 int comparison_method)
856 struct diff_hpp_fmt *dfmt =
857 container_of(fmt, struct diff_hpp_fmt, fmt);
858 struct hist_entry *pair = get_pair_fmt(he, dfmt);
866 switch (comparison_method) {
868 if (pair->diff.computed)
869 diff = pair->diff.period_ratio_delta;
871 diff = compute_delta(he, pair);
873 scnprintf(pfmt, 20, "%%%+d.2f%%%%", dfmt->header_width - 1);
874 return percent_color_snprintf(hpp->buf, hpp->size,
879 if (pair->diff.computed)
880 diff = pair->diff.period_ratio;
882 diff = compute_ratio(he, pair);
884 scnprintf(pfmt, 20, "%%%d.6f", dfmt->header_width);
885 return value_color_snprintf(hpp->buf, hpp->size,
887 case COMPUTE_WEIGHTED_DIFF:
890 if (pair->diff.computed)
891 wdiff = pair->diff.wdiff;
893 wdiff = compute_wdiff(he, pair);
895 scnprintf(pfmt, 20, "%%14ld", dfmt->header_width);
896 return color_snprintf(hpp->buf, hpp->size,
897 get_percent_color(wdiff),
903 return scnprintf(hpp->buf, hpp->size, "%*s",
904 dfmt->header_width, "N/A");
906 return scnprintf(hpp->buf, hpp->size, "%*s",
907 dfmt->header_width, pfmt);
910 static int hpp__color_delta(struct perf_hpp_fmt *fmt,
911 struct perf_hpp *hpp, struct hist_entry *he)
913 return __hpp__color_compare(fmt, hpp, he, COMPUTE_DELTA);
916 static int hpp__color_ratio(struct perf_hpp_fmt *fmt,
917 struct perf_hpp *hpp, struct hist_entry *he)
919 return __hpp__color_compare(fmt, hpp, he, COMPUTE_RATIO);
922 static int hpp__color_wdiff(struct perf_hpp_fmt *fmt,
923 struct perf_hpp *hpp, struct hist_entry *he)
925 return __hpp__color_compare(fmt, hpp, he, COMPUTE_WEIGHTED_DIFF);
929 hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size)
932 case PERF_HPP_DIFF__PERIOD_BASELINE:
933 scnprintf(buf, size, "%" PRIu64, he->stat.period);
942 hpp__entry_pair(struct hist_entry *he, struct hist_entry *pair,
943 int idx, char *buf, size_t size)
950 case PERF_HPP_DIFF__DELTA:
951 if (pair->diff.computed)
952 diff = pair->diff.period_ratio_delta;
954 diff = compute_delta(he, pair);
956 scnprintf(buf, size, "%+4.2F%%", diff);
959 case PERF_HPP_DIFF__RATIO:
960 /* No point for ratio number if we are dummy.. */
962 scnprintf(buf, size, "N/A");
966 if (pair->diff.computed)
967 ratio = pair->diff.period_ratio;
969 ratio = compute_ratio(he, pair);
972 scnprintf(buf, size, "%14.6F", ratio);
975 case PERF_HPP_DIFF__WEIGHTED_DIFF:
976 /* No point for wdiff number if we are dummy.. */
978 scnprintf(buf, size, "N/A");
982 if (pair->diff.computed)
983 wdiff = pair->diff.wdiff;
985 wdiff = compute_wdiff(he, pair);
988 scnprintf(buf, size, "%14ld", wdiff);
991 case PERF_HPP_DIFF__FORMULA:
992 formula_fprintf(he, pair, buf, size);
995 case PERF_HPP_DIFF__PERIOD:
996 scnprintf(buf, size, "%" PRIu64, pair->stat.period);
1005 __hpp__entry_global(struct hist_entry *he, struct diff_hpp_fmt *dfmt,
1006 char *buf, size_t size)
1008 struct hist_entry *pair = get_pair_fmt(he, dfmt);
1009 int idx = dfmt->idx;
1011 /* baseline is special */
1012 if (idx == PERF_HPP_DIFF__BASELINE)
1013 hpp__entry_baseline(he, buf, size);
1016 hpp__entry_pair(he, pair, idx, buf, size);
1018 hpp__entry_unpair(he, idx, buf, size);
1022 static int hpp__entry_global(struct perf_hpp_fmt *_fmt, struct perf_hpp *hpp,
1023 struct hist_entry *he)
1025 struct diff_hpp_fmt *dfmt =
1026 container_of(_fmt, struct diff_hpp_fmt, fmt);
1027 char buf[MAX_COL_WIDTH] = " ";
1029 __hpp__entry_global(he, dfmt, buf, MAX_COL_WIDTH);
1031 if (symbol_conf.field_sep)
1032 return scnprintf(hpp->buf, hpp->size, "%s", buf);
1034 return scnprintf(hpp->buf, hpp->size, "%*s",
1035 dfmt->header_width, buf);
1038 static int hpp__header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1039 struct perf_evsel *evsel __maybe_unused)
1041 struct diff_hpp_fmt *dfmt =
1042 container_of(fmt, struct diff_hpp_fmt, fmt);
1044 BUG_ON(!dfmt->header);
1045 return scnprintf(hpp->buf, hpp->size, dfmt->header);
1048 static int hpp__width(struct perf_hpp_fmt *fmt,
1049 struct perf_hpp *hpp __maybe_unused,
1050 struct perf_evsel *evsel __maybe_unused)
1052 struct diff_hpp_fmt *dfmt =
1053 container_of(fmt, struct diff_hpp_fmt, fmt);
1055 BUG_ON(dfmt->header_width <= 0);
1056 return dfmt->header_width;
1059 static void init_header(struct data__file *d, struct diff_hpp_fmt *dfmt)
1061 #define MAX_HEADER_NAME 100
1062 char buf_indent[MAX_HEADER_NAME];
1063 char buf[MAX_HEADER_NAME];
1064 const char *header = NULL;
1067 BUG_ON(dfmt->idx >= PERF_HPP_DIFF__MAX_INDEX);
1068 header = columns[dfmt->idx].name;
1069 width = columns[dfmt->idx].width;
1071 /* Only our defined HPP fmts should appear here. */
1074 if (data__files_cnt > 2)
1075 scnprintf(buf, MAX_HEADER_NAME, "%s/%d", header, d->idx);
1077 #define NAME (data__files_cnt > 2 ? buf : header)
1078 dfmt->header_width = width;
1079 width = (int) strlen(NAME);
1080 if (dfmt->header_width < width)
1081 dfmt->header_width = width;
1083 scnprintf(buf_indent, MAX_HEADER_NAME, "%*s",
1084 dfmt->header_width, NAME);
1086 dfmt->header = strdup(buf_indent);
1087 #undef MAX_HEADER_NAME
1091 static void data__hpp_register(struct data__file *d, int idx)
1093 struct diff_hpp_fmt *dfmt = &d->fmt[idx];
1094 struct perf_hpp_fmt *fmt = &dfmt->fmt;
1098 fmt->header = hpp__header;
1099 fmt->width = hpp__width;
1100 fmt->entry = hpp__entry_global;
1101 fmt->cmp = hist_entry__cmp_nop;
1102 fmt->collapse = hist_entry__cmp_nop;
1104 /* TODO more colors */
1106 case PERF_HPP_DIFF__BASELINE:
1107 fmt->color = hpp__color_baseline;
1108 fmt->sort = hist_entry__cmp_baseline;
1110 case PERF_HPP_DIFF__DELTA:
1111 fmt->color = hpp__color_delta;
1112 fmt->sort = hist_entry__cmp_delta;
1114 case PERF_HPP_DIFF__RATIO:
1115 fmt->color = hpp__color_ratio;
1116 fmt->sort = hist_entry__cmp_ratio;
1118 case PERF_HPP_DIFF__WEIGHTED_DIFF:
1119 fmt->color = hpp__color_wdiff;
1120 fmt->sort = hist_entry__cmp_wdiff;
1123 fmt->sort = hist_entry__cmp_nop;
1127 init_header(d, dfmt);
1128 perf_hpp__column_register(fmt);
1129 perf_hpp__register_sort_field(fmt);
1132 static int ui_init(void)
1134 struct data__file *d;
1135 struct perf_hpp_fmt *fmt;
1138 data__for_each_file(i, d) {
1141 * Baseline or compute realted columns:
1143 * PERF_HPP_DIFF__BASELINE
1144 * PERF_HPP_DIFF__DELTA
1145 * PERF_HPP_DIFF__RATIO
1146 * PERF_HPP_DIFF__WEIGHTED_DIFF
1148 data__hpp_register(d, i ? compute_2_hpp[compute] :
1149 PERF_HPP_DIFF__BASELINE);
1154 * PERF_HPP_DIFF__FORMULA
1155 * PERF_HPP_DIFF__PERIOD
1156 * PERF_HPP_DIFF__PERIOD_BASELINE
1158 if (show_formula && i)
1159 data__hpp_register(d, PERF_HPP_DIFF__FORMULA);
1162 data__hpp_register(d, i ? PERF_HPP_DIFF__PERIOD :
1163 PERF_HPP_DIFF__PERIOD_BASELINE);
1170 * Prepend an fmt to sort on columns at 'sort_compute' first.
1171 * This fmt is added only to the sort list but not to the
1172 * output fields list.
1174 * Note that this column (data) can be compared twice - one
1175 * for this 'sort_compute' fmt and another for the normal
1176 * diff_hpp_fmt. But it shouldn't a problem as most entries
1177 * will be sorted out by first try or baseline and comparing
1178 * is not a costly operation.
1180 fmt = zalloc(sizeof(*fmt));
1182 pr_err("Memory allocation failed\n");
1186 fmt->cmp = hist_entry__cmp_nop;
1187 fmt->collapse = hist_entry__cmp_nop;
1191 fmt->sort = hist_entry__cmp_delta_idx;
1194 fmt->sort = hist_entry__cmp_ratio_idx;
1196 case COMPUTE_WEIGHTED_DIFF:
1197 fmt->sort = hist_entry__cmp_wdiff_idx;
1203 list_add(&fmt->sort_list, &perf_hpp__sort_list);
1207 static int data_init(int argc, const char **argv)
1209 struct data__file *d;
1210 static const char *defaults[] = {
1214 bool use_default = true;
1217 data__files_cnt = 2;
1221 defaults[1] = argv[0];
1223 data__files_cnt = argc;
1224 use_default = false;
1226 } else if (perf_guest) {
1227 defaults[0] = "perf.data.host";
1228 defaults[1] = "perf.data.guest";
1231 if (sort_compute >= (unsigned int) data__files_cnt) {
1232 pr_err("Order option out of limit.\n");
1236 data__files = zalloc(sizeof(*data__files) * data__files_cnt);
1240 data__for_each_file(i, d) {
1241 struct perf_data_file *file = &d->file;
1243 file->path = use_default ? defaults[i] : argv[i];
1244 file->mode = PERF_DATA_MODE_READ,
1245 file->force = force,
1253 int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused)
1255 int ret = hists__init();
1260 perf_config(perf_default_config, NULL);
1262 argc = parse_options(argc, argv, options, diff_usage, 0);
1264 if (symbol__init(NULL) < 0)
1267 if (data_init(argc, argv) < 0)
1273 sort__mode = SORT_MODE__DIFF;
1275 if (setup_sorting() < 0)
1276 usage_with_options(diff_usage, options);
1280 sort__setup_elide(NULL);
1282 return __cmd_diff();