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"
20 #include "util/config.h"
25 /* Diff command specific HPP columns. */
27 PERF_HPP_DIFF__BASELINE,
28 PERF_HPP_DIFF__PERIOD,
29 PERF_HPP_DIFF__PERIOD_BASELINE,
32 PERF_HPP_DIFF__WEIGHTED_DIFF,
33 PERF_HPP_DIFF__FORMULA,
34 PERF_HPP_DIFF__DELTA_ABS,
36 PERF_HPP_DIFF__MAX_INDEX
40 struct perf_hpp_fmt fmt;
47 struct perf_session *session;
48 struct perf_data_file file;
51 struct diff_hpp_fmt fmt[PERF_HPP_DIFF__MAX_INDEX];
54 static struct data__file *data__files;
55 static int data__files_cnt;
57 #define data__for_each_file_start(i, d, s) \
58 for (i = s, d = &data__files[s]; \
59 i < data__files_cnt; \
60 i++, d = &data__files[i])
62 #define data__for_each_file(i, d) data__for_each_file_start(i, d, 0)
63 #define data__for_each_file_new(i, d) data__for_each_file_start(i, d, 1)
66 static bool show_period;
67 static bool show_formula;
68 static bool show_baseline_only;
69 static unsigned int sort_compute = 1;
71 static s64 compute_wdiff_w1;
72 static s64 compute_wdiff_w2;
77 COMPUTE_WEIGHTED_DIFF,
82 const char *compute_names[COMPUTE_MAX] = {
83 [COMPUTE_DELTA] = "delta",
84 [COMPUTE_DELTA_ABS] = "delta-abs",
85 [COMPUTE_RATIO] = "ratio",
86 [COMPUTE_WEIGHTED_DIFF] = "wdiff",
89 static int compute = COMPUTE_DELTA_ABS;
91 static int compute_2_hpp[COMPUTE_MAX] = {
92 [COMPUTE_DELTA] = PERF_HPP_DIFF__DELTA,
93 [COMPUTE_DELTA_ABS] = PERF_HPP_DIFF__DELTA_ABS,
94 [COMPUTE_RATIO] = PERF_HPP_DIFF__RATIO,
95 [COMPUTE_WEIGHTED_DIFF] = PERF_HPP_DIFF__WEIGHTED_DIFF,
98 #define MAX_COL_WIDTH 70
100 static struct header_column {
103 } columns[PERF_HPP_DIFF__MAX_INDEX] = {
104 [PERF_HPP_DIFF__BASELINE] = {
107 [PERF_HPP_DIFF__PERIOD] = {
111 [PERF_HPP_DIFF__PERIOD_BASELINE] = {
112 .name = "Base period",
115 [PERF_HPP_DIFF__DELTA] = {
119 [PERF_HPP_DIFF__DELTA_ABS] = {
123 [PERF_HPP_DIFF__RATIO] = {
127 [PERF_HPP_DIFF__WEIGHTED_DIFF] = {
128 .name = "Weighted diff",
131 [PERF_HPP_DIFF__FORMULA] = {
133 .width = MAX_COL_WIDTH,
137 static int setup_compute_opt_wdiff(char *opt)
147 w2_str = strchr(opt, ',');
155 compute_wdiff_w1 = strtol(w1_str, NULL, 10);
156 compute_wdiff_w2 = strtol(w2_str, NULL, 10);
158 if (!compute_wdiff_w1 || !compute_wdiff_w2)
161 pr_debug("compute wdiff w1(%" PRId64 ") w2(%" PRId64 ")\n",
162 compute_wdiff_w1, compute_wdiff_w2);
168 pr_err("Failed: wrong weight data, use 'wdiff:w1,w2'\n");
173 static int setup_compute_opt(char *opt)
175 if (compute == COMPUTE_WEIGHTED_DIFF)
176 return setup_compute_opt_wdiff(opt);
179 pr_err("Failed: extra option specified '%s'", opt);
186 static int setup_compute(const struct option *opt, const char *str,
187 int unset __maybe_unused)
189 int *cp = (int *) opt->value;
190 char *cstr = (char *) str;
200 option = strchr(str, ':');
202 unsigned len = option++ - str;
205 * The str data are not writeable, so we need
206 * to use another buffer.
209 /* No option value is longer. */
210 if (len >= sizeof(buf))
213 strncpy(buf, str, len);
218 for (i = 0; i < COMPUTE_MAX; i++)
219 if (!strcmp(cstr, compute_names[i])) {
221 return setup_compute_opt(option);
224 pr_err("Failed: '%s' is not computation method "
225 "(use 'delta','ratio' or 'wdiff')\n", str);
229 static double period_percent(struct hist_entry *he, u64 period)
231 u64 total = hists__total_period(he->hists);
233 return (period * 100.0) / total;
236 static double compute_delta(struct hist_entry *he, struct hist_entry *pair)
238 double old_percent = period_percent(he, he->stat.period);
239 double new_percent = period_percent(pair, pair->stat.period);
241 pair->diff.period_ratio_delta = new_percent - old_percent;
242 pair->diff.computed = true;
243 return pair->diff.period_ratio_delta;
246 static double compute_ratio(struct hist_entry *he, struct hist_entry *pair)
248 double old_period = he->stat.period ?: 1;
249 double new_period = pair->stat.period;
251 pair->diff.computed = true;
252 pair->diff.period_ratio = new_period / old_period;
253 return pair->diff.period_ratio;
256 static s64 compute_wdiff(struct hist_entry *he, struct hist_entry *pair)
258 u64 old_period = he->stat.period;
259 u64 new_period = pair->stat.period;
261 pair->diff.computed = true;
262 pair->diff.wdiff = new_period * compute_wdiff_w2 -
263 old_period * compute_wdiff_w1;
265 return pair->diff.wdiff;
268 static int formula_delta(struct hist_entry *he, struct hist_entry *pair,
269 char *buf, size_t size)
271 u64 he_total = he->hists->stats.total_period;
272 u64 pair_total = pair->hists->stats.total_period;
274 if (symbol_conf.filter_relative) {
275 he_total = he->hists->stats.total_non_filtered_period;
276 pair_total = pair->hists->stats.total_non_filtered_period;
278 return scnprintf(buf, size,
279 "(%" PRIu64 " * 100 / %" PRIu64 ") - "
280 "(%" PRIu64 " * 100 / %" PRIu64 ")",
281 pair->stat.period, pair_total,
282 he->stat.period, he_total);
285 static int formula_ratio(struct hist_entry *he, struct hist_entry *pair,
286 char *buf, size_t size)
288 double old_period = he->stat.period;
289 double new_period = pair->stat.period;
291 return scnprintf(buf, size, "%.0F / %.0F", new_period, old_period);
294 static int formula_wdiff(struct hist_entry *he, struct hist_entry *pair,
295 char *buf, size_t size)
297 u64 old_period = he->stat.period;
298 u64 new_period = pair->stat.period;
300 return scnprintf(buf, size,
301 "(%" PRIu64 " * " "%" PRId64 ") - (%" PRIu64 " * " "%" PRId64 ")",
302 new_period, compute_wdiff_w2, old_period, compute_wdiff_w1);
305 static int formula_fprintf(struct hist_entry *he, struct hist_entry *pair,
306 char *buf, size_t size)
310 case COMPUTE_DELTA_ABS:
311 return formula_delta(he, pair, buf, size);
313 return formula_ratio(he, pair, buf, size);
314 case COMPUTE_WEIGHTED_DIFF:
315 return formula_wdiff(he, pair, buf, size);
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);
333 if (machine__resolve(machine, &al, sample) < 0) {
334 pr_warning("problem processing %d event, skipping it.\n",
339 if (!hists__add_entry(hists, &al, NULL, NULL, NULL, sample, true)) {
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;
355 addr_location__put(&al);
359 static struct perf_tool tool = {
360 .sample = diff__process_sample_event,
361 .mmap = perf_event__process_mmap,
362 .mmap2 = perf_event__process_mmap2,
363 .comm = perf_event__process_comm,
364 .exit = perf_event__process_exit,
365 .fork = perf_event__process_fork,
366 .lost = perf_event__process_lost,
367 .ordered_events = true,
368 .ordering_requires_timestamps = true,
371 static struct perf_evsel *evsel_match(struct perf_evsel *evsel,
372 struct perf_evlist *evlist)
374 struct perf_evsel *e;
376 evlist__for_each_entry(evlist, e) {
377 if (perf_evsel__match2(evsel, e))
384 static void perf_evlist__collapse_resort(struct perf_evlist *evlist)
386 struct perf_evsel *evsel;
388 evlist__for_each_entry(evlist, evsel) {
389 struct hists *hists = evsel__hists(evsel);
391 hists__collapse_resort(hists, NULL);
395 static struct data__file *fmt_to_data_file(struct perf_hpp_fmt *fmt)
397 struct diff_hpp_fmt *dfmt = container_of(fmt, struct diff_hpp_fmt, fmt);
398 void *ptr = dfmt - dfmt->idx;
399 struct data__file *d = container_of(ptr, struct data__file, fmt);
404 static struct hist_entry*
405 get_pair_data(struct hist_entry *he, struct data__file *d)
407 if (hist_entry__has_pairs(he)) {
408 struct hist_entry *pair;
410 list_for_each_entry(pair, &he->pairs.head, pairs.node)
411 if (pair->hists == d->hists)
418 static struct hist_entry*
419 get_pair_fmt(struct hist_entry *he, struct diff_hpp_fmt *dfmt)
421 struct data__file *d = fmt_to_data_file(&dfmt->fmt);
423 return get_pair_data(he, d);
426 static void hists__baseline_only(struct hists *hists)
428 struct rb_root *root;
429 struct rb_node *next;
431 if (hists__has(hists, need_collapse))
432 root = &hists->entries_collapsed;
434 root = hists->entries_in;
436 next = rb_first(root);
437 while (next != NULL) {
438 struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node_in);
440 next = rb_next(&he->rb_node_in);
441 if (!hist_entry__next_pair(he)) {
442 rb_erase(&he->rb_node_in, root);
443 hist_entry__delete(he);
448 static void hists__precompute(struct hists *hists)
450 struct rb_root *root;
451 struct rb_node *next;
453 if (hists__has(hists, need_collapse))
454 root = &hists->entries_collapsed;
456 root = hists->entries_in;
458 next = rb_first(root);
459 while (next != NULL) {
460 struct hist_entry *he, *pair;
461 struct data__file *d;
464 he = rb_entry(next, struct hist_entry, rb_node_in);
465 next = rb_next(&he->rb_node_in);
467 data__for_each_file_new(i, d) {
468 pair = get_pair_data(he, d);
474 case COMPUTE_DELTA_ABS:
475 compute_delta(he, pair);
478 compute_ratio(he, pair);
480 case COMPUTE_WEIGHTED_DIFF:
481 compute_wdiff(he, pair);
490 static int64_t cmp_doubles(double l, double r)
501 __hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
507 double l = left->diff.period_ratio_delta;
508 double r = right->diff.period_ratio_delta;
510 return cmp_doubles(l, r);
512 case COMPUTE_DELTA_ABS:
514 double l = fabs(left->diff.period_ratio_delta);
515 double r = fabs(right->diff.period_ratio_delta);
517 return cmp_doubles(l, r);
521 double l = left->diff.period_ratio;
522 double r = right->diff.period_ratio;
524 return cmp_doubles(l, r);
526 case COMPUTE_WEIGHTED_DIFF:
528 s64 l = left->diff.wdiff;
529 s64 r = right->diff.wdiff;
541 hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
544 bool pairs_left = hist_entry__has_pairs(left);
545 bool pairs_right = hist_entry__has_pairs(right);
546 struct hist_entry *p_right, *p_left;
548 if (!pairs_left && !pairs_right)
551 if (!pairs_left || !pairs_right)
552 return pairs_left ? -1 : 1;
554 p_left = get_pair_data(left, &data__files[sort_idx]);
555 p_right = get_pair_data(right, &data__files[sort_idx]);
557 if (!p_left && !p_right)
560 if (!p_left || !p_right)
561 return p_left ? -1 : 1;
564 * We have 2 entries of same kind, let's
565 * make the data comparison.
567 return __hist_entry__cmp_compute(p_left, p_right, c);
571 hist_entry__cmp_compute_idx(struct hist_entry *left, struct hist_entry *right,
574 struct hist_entry *p_right, *p_left;
576 p_left = get_pair_data(left, &data__files[sort_idx]);
577 p_right = get_pair_data(right, &data__files[sort_idx]);
579 if (!p_left && !p_right)
582 if (!p_left || !p_right)
583 return p_left ? -1 : 1;
585 if (c != COMPUTE_DELTA && c != COMPUTE_DELTA_ABS) {
587 * The delta can be computed without the baseline, but
588 * others are not. Put those entries which have no
591 if (left->dummy && right->dummy)
594 if (left->dummy || right->dummy)
595 return left->dummy ? 1 : -1;
598 return __hist_entry__cmp_compute(p_left, p_right, c);
602 hist_entry__cmp_nop(struct perf_hpp_fmt *fmt __maybe_unused,
603 struct hist_entry *left __maybe_unused,
604 struct hist_entry *right __maybe_unused)
610 hist_entry__cmp_baseline(struct perf_hpp_fmt *fmt __maybe_unused,
611 struct hist_entry *left, struct hist_entry *right)
613 if (left->stat.period == right->stat.period)
615 return left->stat.period > right->stat.period ? 1 : -1;
619 hist_entry__cmp_delta(struct perf_hpp_fmt *fmt,
620 struct hist_entry *left, struct hist_entry *right)
622 struct data__file *d = fmt_to_data_file(fmt);
624 return hist_entry__cmp_compute(right, left, COMPUTE_DELTA, d->idx);
628 hist_entry__cmp_delta_abs(struct perf_hpp_fmt *fmt,
629 struct hist_entry *left, struct hist_entry *right)
631 struct data__file *d = fmt_to_data_file(fmt);
633 return hist_entry__cmp_compute(right, left, COMPUTE_DELTA_ABS, d->idx);
637 hist_entry__cmp_ratio(struct perf_hpp_fmt *fmt,
638 struct hist_entry *left, struct hist_entry *right)
640 struct data__file *d = fmt_to_data_file(fmt);
642 return hist_entry__cmp_compute(right, left, COMPUTE_RATIO, d->idx);
646 hist_entry__cmp_wdiff(struct perf_hpp_fmt *fmt,
647 struct hist_entry *left, struct hist_entry *right)
649 struct data__file *d = fmt_to_data_file(fmt);
651 return hist_entry__cmp_compute(right, left, COMPUTE_WEIGHTED_DIFF, d->idx);
655 hist_entry__cmp_delta_idx(struct perf_hpp_fmt *fmt __maybe_unused,
656 struct hist_entry *left, struct hist_entry *right)
658 return hist_entry__cmp_compute_idx(right, left, COMPUTE_DELTA,
663 hist_entry__cmp_delta_abs_idx(struct perf_hpp_fmt *fmt __maybe_unused,
664 struct hist_entry *left, struct hist_entry *right)
666 return hist_entry__cmp_compute_idx(right, left, COMPUTE_DELTA_ABS,
671 hist_entry__cmp_ratio_idx(struct perf_hpp_fmt *fmt __maybe_unused,
672 struct hist_entry *left, struct hist_entry *right)
674 return hist_entry__cmp_compute_idx(right, left, COMPUTE_RATIO,
679 hist_entry__cmp_wdiff_idx(struct perf_hpp_fmt *fmt __maybe_unused,
680 struct hist_entry *left, struct hist_entry *right)
682 return hist_entry__cmp_compute_idx(right, left, COMPUTE_WEIGHTED_DIFF,
686 static void hists__process(struct hists *hists)
688 if (show_baseline_only)
689 hists__baseline_only(hists);
691 hists__precompute(hists);
692 hists__output_resort(hists, NULL);
694 hists__fprintf(hists, !quiet, 0, 0, 0, stdout,
695 symbol_conf.use_callchain);
698 static void data__fprintf(void)
700 struct data__file *d;
703 fprintf(stdout, "# Data files:\n");
705 data__for_each_file(i, d)
706 fprintf(stdout, "# [%d] %s %s\n",
707 d->idx, d->file.path,
708 !d->idx ? "(Baseline)" : "");
710 fprintf(stdout, "#\n");
713 static void data_process(void)
715 struct perf_evlist *evlist_base = data__files[0].session->evlist;
716 struct perf_evsel *evsel_base;
719 evlist__for_each_entry(evlist_base, evsel_base) {
720 struct hists *hists_base = evsel__hists(evsel_base);
721 struct data__file *d;
724 data__for_each_file_new(i, d) {
725 struct perf_evlist *evlist = d->session->evlist;
726 struct perf_evsel *evsel;
729 evsel = evsel_match(evsel_base, evlist);
733 hists = evsel__hists(evsel);
736 hists__match(hists_base, hists);
738 if (!show_baseline_only)
739 hists__link(hists_base, hists);
743 fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
744 perf_evsel__name(evsel_base));
749 if (verbose > 0 || ((data__files_cnt > 2) && !quiet))
752 /* Don't sort callchain for perf diff */
753 perf_evsel__reset_sample_bit(evsel_base, CALLCHAIN);
755 hists__process(hists_base);
759 static void data__free(struct data__file *d)
763 for (col = 0; col < PERF_HPP_DIFF__MAX_INDEX; col++) {
764 struct diff_hpp_fmt *fmt = &d->fmt[col];
770 static int __cmd_diff(void)
772 struct data__file *d;
773 int ret = -EINVAL, i;
775 data__for_each_file(i, d) {
776 d->session = perf_session__new(&d->file, false, &tool);
778 pr_err("Failed to open %s\n", d->file.path);
783 ret = perf_session__process_events(d->session);
785 pr_err("Failed to process %s\n", d->file.path);
789 perf_evlist__collapse_resort(d->session->evlist);
795 data__for_each_file(i, d) {
796 perf_session__delete(d->session);
804 static const char * const diff_usage[] = {
805 "perf diff [<options>] [old_file] [new_file]",
809 static const struct option options[] = {
810 OPT_INCR('v', "verbose", &verbose,
811 "be more verbose (show symbol address, etc)"),
812 OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
813 OPT_BOOLEAN('b', "baseline-only", &show_baseline_only,
814 "Show only items with match in baseline"),
815 OPT_CALLBACK('c', "compute", &compute,
816 "delta,delta-abs,ratio,wdiff:w1,w2 (default delta-abs)",
817 "Entries differential computation selection",
819 OPT_BOOLEAN('p', "period", &show_period,
820 "Show period values."),
821 OPT_BOOLEAN('F', "formula", &show_formula,
823 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
824 "dump raw trace in ASCII"),
825 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
826 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
827 "file", "kallsyms pathname"),
828 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
829 "load module symbols - WARNING: use only with -k and LIVE kernel"),
830 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
831 "only consider symbols in these dsos"),
832 OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
833 "only consider symbols in these comms"),
834 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
835 "only consider these symbols"),
836 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
837 "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
838 " Please refer the man page for the complete list."),
839 OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
840 "separator for columns, no spaces will be added between "
841 "columns '.' is reserved."),
842 OPT_CALLBACK(0, "symfs", NULL, "directory",
843 "Look for files with symbols relative to this directory",
844 symbol__config_symfs),
845 OPT_UINTEGER('o', "order", &sort_compute, "Specify compute sorting."),
846 OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
847 "How to display percentage of filtered entries", parse_filter_percentage),
851 static double baseline_percent(struct hist_entry *he)
853 u64 total = hists__total_period(he->hists);
855 return 100.0 * he->stat.period / total;
858 static int hpp__color_baseline(struct perf_hpp_fmt *fmt,
859 struct perf_hpp *hpp, struct hist_entry *he)
861 struct diff_hpp_fmt *dfmt =
862 container_of(fmt, struct diff_hpp_fmt, fmt);
863 double percent = baseline_percent(he);
867 scnprintf(pfmt, 20, "%%%d.2f%%%%", dfmt->header_width - 1);
868 return percent_color_snprintf(hpp->buf, hpp->size,
871 return scnprintf(hpp->buf, hpp->size, "%*s",
872 dfmt->header_width, pfmt);
875 static int hpp__entry_baseline(struct hist_entry *he, char *buf, size_t size)
877 double percent = baseline_percent(he);
878 const char *fmt = symbol_conf.field_sep ? "%.2f" : "%6.2f%%";
882 ret = scnprintf(buf, size, fmt, percent);
887 static int __hpp__color_compare(struct perf_hpp_fmt *fmt,
888 struct perf_hpp *hpp, struct hist_entry *he,
889 int comparison_method)
891 struct diff_hpp_fmt *dfmt =
892 container_of(fmt, struct diff_hpp_fmt, fmt);
893 struct hist_entry *pair = get_pair_fmt(he, dfmt);
901 switch (comparison_method) {
903 if (pair->diff.computed)
904 diff = pair->diff.period_ratio_delta;
906 diff = compute_delta(he, pair);
908 scnprintf(pfmt, 20, "%%%+d.2f%%%%", dfmt->header_width - 1);
909 return percent_color_snprintf(hpp->buf, hpp->size,
914 if (pair->diff.computed)
915 diff = pair->diff.period_ratio;
917 diff = compute_ratio(he, pair);
919 scnprintf(pfmt, 20, "%%%d.6f", dfmt->header_width);
920 return value_color_snprintf(hpp->buf, hpp->size,
922 case COMPUTE_WEIGHTED_DIFF:
925 if (pair->diff.computed)
926 wdiff = pair->diff.wdiff;
928 wdiff = compute_wdiff(he, pair);
930 scnprintf(pfmt, 20, "%%14ld", dfmt->header_width);
931 return color_snprintf(hpp->buf, hpp->size,
932 get_percent_color(wdiff),
938 return scnprintf(hpp->buf, hpp->size, "%*s",
939 dfmt->header_width, "N/A");
941 return scnprintf(hpp->buf, hpp->size, "%*s",
942 dfmt->header_width, pfmt);
945 static int hpp__color_delta(struct perf_hpp_fmt *fmt,
946 struct perf_hpp *hpp, struct hist_entry *he)
948 return __hpp__color_compare(fmt, hpp, he, COMPUTE_DELTA);
951 static int hpp__color_ratio(struct perf_hpp_fmt *fmt,
952 struct perf_hpp *hpp, struct hist_entry *he)
954 return __hpp__color_compare(fmt, hpp, he, COMPUTE_RATIO);
957 static int hpp__color_wdiff(struct perf_hpp_fmt *fmt,
958 struct perf_hpp *hpp, struct hist_entry *he)
960 return __hpp__color_compare(fmt, hpp, he, COMPUTE_WEIGHTED_DIFF);
964 hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size)
967 case PERF_HPP_DIFF__PERIOD_BASELINE:
968 scnprintf(buf, size, "%" PRIu64, he->stat.period);
977 hpp__entry_pair(struct hist_entry *he, struct hist_entry *pair,
978 int idx, char *buf, size_t size)
985 case PERF_HPP_DIFF__DELTA:
986 case PERF_HPP_DIFF__DELTA_ABS:
987 if (pair->diff.computed)
988 diff = pair->diff.period_ratio_delta;
990 diff = compute_delta(he, pair);
992 scnprintf(buf, size, "%+4.2F%%", diff);
995 case PERF_HPP_DIFF__RATIO:
996 /* No point for ratio number if we are dummy.. */
998 scnprintf(buf, size, "N/A");
1002 if (pair->diff.computed)
1003 ratio = pair->diff.period_ratio;
1005 ratio = compute_ratio(he, pair);
1008 scnprintf(buf, size, "%14.6F", ratio);
1011 case PERF_HPP_DIFF__WEIGHTED_DIFF:
1012 /* No point for wdiff number if we are dummy.. */
1014 scnprintf(buf, size, "N/A");
1018 if (pair->diff.computed)
1019 wdiff = pair->diff.wdiff;
1021 wdiff = compute_wdiff(he, pair);
1024 scnprintf(buf, size, "%14ld", wdiff);
1027 case PERF_HPP_DIFF__FORMULA:
1028 formula_fprintf(he, pair, buf, size);
1031 case PERF_HPP_DIFF__PERIOD:
1032 scnprintf(buf, size, "%" PRIu64, pair->stat.period);
1041 __hpp__entry_global(struct hist_entry *he, struct diff_hpp_fmt *dfmt,
1042 char *buf, size_t size)
1044 struct hist_entry *pair = get_pair_fmt(he, dfmt);
1045 int idx = dfmt->idx;
1047 /* baseline is special */
1048 if (idx == PERF_HPP_DIFF__BASELINE)
1049 hpp__entry_baseline(he, buf, size);
1052 hpp__entry_pair(he, pair, idx, buf, size);
1054 hpp__entry_unpair(he, idx, buf, size);
1058 static int hpp__entry_global(struct perf_hpp_fmt *_fmt, struct perf_hpp *hpp,
1059 struct hist_entry *he)
1061 struct diff_hpp_fmt *dfmt =
1062 container_of(_fmt, struct diff_hpp_fmt, fmt);
1063 char buf[MAX_COL_WIDTH] = " ";
1065 __hpp__entry_global(he, dfmt, buf, MAX_COL_WIDTH);
1067 if (symbol_conf.field_sep)
1068 return scnprintf(hpp->buf, hpp->size, "%s", buf);
1070 return scnprintf(hpp->buf, hpp->size, "%*s",
1071 dfmt->header_width, buf);
1074 static int hpp__header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1075 struct hists *hists __maybe_unused,
1076 int line __maybe_unused,
1077 int *span __maybe_unused)
1079 struct diff_hpp_fmt *dfmt =
1080 container_of(fmt, struct diff_hpp_fmt, fmt);
1082 BUG_ON(!dfmt->header);
1083 return scnprintf(hpp->buf, hpp->size, dfmt->header);
1086 static int hpp__width(struct perf_hpp_fmt *fmt,
1087 struct perf_hpp *hpp __maybe_unused,
1088 struct hists *hists __maybe_unused)
1090 struct diff_hpp_fmt *dfmt =
1091 container_of(fmt, struct diff_hpp_fmt, fmt);
1093 BUG_ON(dfmt->header_width <= 0);
1094 return dfmt->header_width;
1097 static void init_header(struct data__file *d, struct diff_hpp_fmt *dfmt)
1099 #define MAX_HEADER_NAME 100
1100 char buf_indent[MAX_HEADER_NAME];
1101 char buf[MAX_HEADER_NAME];
1102 const char *header = NULL;
1105 BUG_ON(dfmt->idx >= PERF_HPP_DIFF__MAX_INDEX);
1106 header = columns[dfmt->idx].name;
1107 width = columns[dfmt->idx].width;
1109 /* Only our defined HPP fmts should appear here. */
1112 if (data__files_cnt > 2)
1113 scnprintf(buf, MAX_HEADER_NAME, "%s/%d", header, d->idx);
1115 #define NAME (data__files_cnt > 2 ? buf : header)
1116 dfmt->header_width = width;
1117 width = (int) strlen(NAME);
1118 if (dfmt->header_width < width)
1119 dfmt->header_width = width;
1121 scnprintf(buf_indent, MAX_HEADER_NAME, "%*s",
1122 dfmt->header_width, NAME);
1124 dfmt->header = strdup(buf_indent);
1125 #undef MAX_HEADER_NAME
1129 static void data__hpp_register(struct data__file *d, int idx)
1131 struct diff_hpp_fmt *dfmt = &d->fmt[idx];
1132 struct perf_hpp_fmt *fmt = &dfmt->fmt;
1136 fmt->header = hpp__header;
1137 fmt->width = hpp__width;
1138 fmt->entry = hpp__entry_global;
1139 fmt->cmp = hist_entry__cmp_nop;
1140 fmt->collapse = hist_entry__cmp_nop;
1142 /* TODO more colors */
1144 case PERF_HPP_DIFF__BASELINE:
1145 fmt->color = hpp__color_baseline;
1146 fmt->sort = hist_entry__cmp_baseline;
1148 case PERF_HPP_DIFF__DELTA:
1149 fmt->color = hpp__color_delta;
1150 fmt->sort = hist_entry__cmp_delta;
1152 case PERF_HPP_DIFF__RATIO:
1153 fmt->color = hpp__color_ratio;
1154 fmt->sort = hist_entry__cmp_ratio;
1156 case PERF_HPP_DIFF__WEIGHTED_DIFF:
1157 fmt->color = hpp__color_wdiff;
1158 fmt->sort = hist_entry__cmp_wdiff;
1160 case PERF_HPP_DIFF__DELTA_ABS:
1161 fmt->color = hpp__color_delta;
1162 fmt->sort = hist_entry__cmp_delta_abs;
1165 fmt->sort = hist_entry__cmp_nop;
1169 init_header(d, dfmt);
1170 perf_hpp__column_register(fmt);
1171 perf_hpp__register_sort_field(fmt);
1174 static int ui_init(void)
1176 struct data__file *d;
1177 struct perf_hpp_fmt *fmt;
1180 data__for_each_file(i, d) {
1183 * Baseline or compute realted columns:
1185 * PERF_HPP_DIFF__BASELINE
1186 * PERF_HPP_DIFF__DELTA
1187 * PERF_HPP_DIFF__RATIO
1188 * PERF_HPP_DIFF__WEIGHTED_DIFF
1190 data__hpp_register(d, i ? compute_2_hpp[compute] :
1191 PERF_HPP_DIFF__BASELINE);
1196 * PERF_HPP_DIFF__FORMULA
1197 * PERF_HPP_DIFF__PERIOD
1198 * PERF_HPP_DIFF__PERIOD_BASELINE
1200 if (show_formula && i)
1201 data__hpp_register(d, PERF_HPP_DIFF__FORMULA);
1204 data__hpp_register(d, i ? PERF_HPP_DIFF__PERIOD :
1205 PERF_HPP_DIFF__PERIOD_BASELINE);
1212 * Prepend an fmt to sort on columns at 'sort_compute' first.
1213 * This fmt is added only to the sort list but not to the
1214 * output fields list.
1216 * Note that this column (data) can be compared twice - one
1217 * for this 'sort_compute' fmt and another for the normal
1218 * diff_hpp_fmt. But it shouldn't a problem as most entries
1219 * will be sorted out by first try or baseline and comparing
1220 * is not a costly operation.
1222 fmt = zalloc(sizeof(*fmt));
1224 pr_err("Memory allocation failed\n");
1228 fmt->cmp = hist_entry__cmp_nop;
1229 fmt->collapse = hist_entry__cmp_nop;
1233 fmt->sort = hist_entry__cmp_delta_idx;
1236 fmt->sort = hist_entry__cmp_ratio_idx;
1238 case COMPUTE_WEIGHTED_DIFF:
1239 fmt->sort = hist_entry__cmp_wdiff_idx;
1241 case COMPUTE_DELTA_ABS:
1242 fmt->sort = hist_entry__cmp_delta_abs_idx;
1248 perf_hpp__prepend_sort_field(fmt);
1252 static int data_init(int argc, const char **argv)
1254 struct data__file *d;
1255 static const char *defaults[] = {
1259 bool use_default = true;
1262 data__files_cnt = 2;
1266 defaults[1] = argv[0];
1268 data__files_cnt = argc;
1269 use_default = false;
1271 } else if (perf_guest) {
1272 defaults[0] = "perf.data.host";
1273 defaults[1] = "perf.data.guest";
1276 if (sort_compute >= (unsigned int) data__files_cnt) {
1277 pr_err("Order option out of limit.\n");
1281 data__files = zalloc(sizeof(*data__files) * data__files_cnt);
1285 data__for_each_file(i, d) {
1286 struct perf_data_file *file = &d->file;
1288 file->path = use_default ? defaults[i] : argv[i];
1289 file->mode = PERF_DATA_MODE_READ,
1290 file->force = force,
1298 static int diff__config(const char *var, const char *value,
1299 void *cb __maybe_unused)
1301 if (!strcmp(var, "diff.order")) {
1302 sort_compute = perf_config_int(var, value);
1305 if (!strcmp(var, "diff.compute")) {
1306 if (!strcmp(value, "delta")) {
1307 compute = COMPUTE_DELTA;
1308 } else if (!strcmp(value, "delta-abs")) {
1309 compute = COMPUTE_DELTA_ABS;
1310 } else if (!strcmp(value, "ratio")) {
1311 compute = COMPUTE_RATIO;
1312 } else if (!strcmp(value, "wdiff")) {
1313 compute = COMPUTE_WEIGHTED_DIFF;
1315 pr_err("Invalid compute method: %s\n", value);
1323 int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused)
1325 int ret = hists__init();
1330 perf_config(diff__config, NULL);
1332 argc = parse_options(argc, argv, options, diff_usage, 0);
1335 perf_quiet_option();
1337 if (symbol__init(NULL) < 0)
1340 if (data_init(argc, argv) < 0)
1346 sort__mode = SORT_MODE__DIFF;
1348 if (setup_sorting(NULL) < 0)
1349 usage_with_options(diff_usage, options);
1353 sort__setup_elide(NULL);
1355 return __cmd_diff();