1 // SPDX-License-Identifier: GPL-2.0
5 * Builtin diff command: Analyze two perf.data input files, look up and read
6 * DSOs and symbol information, sort them and produce a diff.
10 #include "util/debug.h"
11 #include "util/event.h"
12 #include "util/hist.h"
13 #include "util/evsel.h"
14 #include "util/evlist.h"
15 #include "util/session.h"
16 #include "util/tool.h"
17 #include "util/sort.h"
18 #include "util/symbol.h"
19 #include "util/util.h"
20 #include "util/data.h"
21 #include "util/config.h"
22 #include "util/time-utils.h"
30 struct perf_tool tool;
32 struct perf_time_interval *ptime_range;
37 /* Diff command specific HPP columns. */
39 PERF_HPP_DIFF__BASELINE,
40 PERF_HPP_DIFF__PERIOD,
41 PERF_HPP_DIFF__PERIOD_BASELINE,
44 PERF_HPP_DIFF__WEIGHTED_DIFF,
45 PERF_HPP_DIFF__FORMULA,
46 PERF_HPP_DIFF__DELTA_ABS,
48 PERF_HPP_DIFF__MAX_INDEX
52 struct perf_hpp_fmt fmt;
59 struct perf_session *session;
60 struct perf_data data;
63 struct diff_hpp_fmt fmt[PERF_HPP_DIFF__MAX_INDEX];
66 static struct data__file *data__files;
67 static int data__files_cnt;
69 #define data__for_each_file_start(i, d, s) \
70 for (i = s, d = &data__files[s]; \
71 i < data__files_cnt; \
72 i++, d = &data__files[i])
74 #define data__for_each_file(i, d) data__for_each_file_start(i, d, 0)
75 #define data__for_each_file_new(i, d) data__for_each_file_start(i, d, 1)
78 static bool show_period;
79 static bool show_formula;
80 static bool show_baseline_only;
81 static unsigned int sort_compute = 1;
83 static s64 compute_wdiff_w1;
84 static s64 compute_wdiff_w2;
86 static const char *cpu_list;
87 static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
92 COMPUTE_WEIGHTED_DIFF,
97 const char *compute_names[COMPUTE_MAX] = {
98 [COMPUTE_DELTA] = "delta",
99 [COMPUTE_DELTA_ABS] = "delta-abs",
100 [COMPUTE_RATIO] = "ratio",
101 [COMPUTE_WEIGHTED_DIFF] = "wdiff",
104 static int compute = COMPUTE_DELTA_ABS;
106 static int compute_2_hpp[COMPUTE_MAX] = {
107 [COMPUTE_DELTA] = PERF_HPP_DIFF__DELTA,
108 [COMPUTE_DELTA_ABS] = PERF_HPP_DIFF__DELTA_ABS,
109 [COMPUTE_RATIO] = PERF_HPP_DIFF__RATIO,
110 [COMPUTE_WEIGHTED_DIFF] = PERF_HPP_DIFF__WEIGHTED_DIFF,
113 #define MAX_COL_WIDTH 70
115 static struct header_column {
118 } columns[PERF_HPP_DIFF__MAX_INDEX] = {
119 [PERF_HPP_DIFF__BASELINE] = {
122 [PERF_HPP_DIFF__PERIOD] = {
126 [PERF_HPP_DIFF__PERIOD_BASELINE] = {
127 .name = "Base period",
130 [PERF_HPP_DIFF__DELTA] = {
134 [PERF_HPP_DIFF__DELTA_ABS] = {
138 [PERF_HPP_DIFF__RATIO] = {
142 [PERF_HPP_DIFF__WEIGHTED_DIFF] = {
143 .name = "Weighted diff",
146 [PERF_HPP_DIFF__FORMULA] = {
148 .width = MAX_COL_WIDTH,
152 static int setup_compute_opt_wdiff(char *opt)
162 w2_str = strchr(opt, ',');
170 compute_wdiff_w1 = strtol(w1_str, NULL, 10);
171 compute_wdiff_w2 = strtol(w2_str, NULL, 10);
173 if (!compute_wdiff_w1 || !compute_wdiff_w2)
176 pr_debug("compute wdiff w1(%" PRId64 ") w2(%" PRId64 ")\n",
177 compute_wdiff_w1, compute_wdiff_w2);
183 pr_err("Failed: wrong weight data, use 'wdiff:w1,w2'\n");
188 static int setup_compute_opt(char *opt)
190 if (compute == COMPUTE_WEIGHTED_DIFF)
191 return setup_compute_opt_wdiff(opt);
194 pr_err("Failed: extra option specified '%s'", opt);
201 static int setup_compute(const struct option *opt, const char *str,
202 int unset __maybe_unused)
204 int *cp = (int *) opt->value;
205 char *cstr = (char *) str;
215 option = strchr(str, ':');
217 unsigned len = option++ - str;
220 * The str data are not writeable, so we need
221 * to use another buffer.
224 /* No option value is longer. */
225 if (len >= sizeof(buf))
228 strncpy(buf, str, len);
233 for (i = 0; i < COMPUTE_MAX; i++)
234 if (!strcmp(cstr, compute_names[i])) {
236 return setup_compute_opt(option);
239 pr_err("Failed: '%s' is not computation method "
240 "(use 'delta','ratio' or 'wdiff')\n", str);
244 static double period_percent(struct hist_entry *he, u64 period)
246 u64 total = hists__total_period(he->hists);
248 return (period * 100.0) / total;
251 static double compute_delta(struct hist_entry *he, struct hist_entry *pair)
253 double old_percent = period_percent(he, he->stat.period);
254 double new_percent = period_percent(pair, pair->stat.period);
256 pair->diff.period_ratio_delta = new_percent - old_percent;
257 pair->diff.computed = true;
258 return pair->diff.period_ratio_delta;
261 static double compute_ratio(struct hist_entry *he, struct hist_entry *pair)
263 double old_period = he->stat.period ?: 1;
264 double new_period = pair->stat.period;
266 pair->diff.computed = true;
267 pair->diff.period_ratio = new_period / old_period;
268 return pair->diff.period_ratio;
271 static s64 compute_wdiff(struct hist_entry *he, struct hist_entry *pair)
273 u64 old_period = he->stat.period;
274 u64 new_period = pair->stat.period;
276 pair->diff.computed = true;
277 pair->diff.wdiff = new_period * compute_wdiff_w2 -
278 old_period * compute_wdiff_w1;
280 return pair->diff.wdiff;
283 static int formula_delta(struct hist_entry *he, struct hist_entry *pair,
284 char *buf, size_t size)
286 u64 he_total = he->hists->stats.total_period;
287 u64 pair_total = pair->hists->stats.total_period;
289 if (symbol_conf.filter_relative) {
290 he_total = he->hists->stats.total_non_filtered_period;
291 pair_total = pair->hists->stats.total_non_filtered_period;
293 return scnprintf(buf, size,
294 "(%" PRIu64 " * 100 / %" PRIu64 ") - "
295 "(%" PRIu64 " * 100 / %" PRIu64 ")",
296 pair->stat.period, pair_total,
297 he->stat.period, he_total);
300 static int formula_ratio(struct hist_entry *he, struct hist_entry *pair,
301 char *buf, size_t size)
303 double old_period = he->stat.period;
304 double new_period = pair->stat.period;
306 return scnprintf(buf, size, "%.0F / %.0F", new_period, old_period);
309 static int formula_wdiff(struct hist_entry *he, struct hist_entry *pair,
310 char *buf, size_t size)
312 u64 old_period = he->stat.period;
313 u64 new_period = pair->stat.period;
315 return scnprintf(buf, size,
316 "(%" PRIu64 " * " "%" PRId64 ") - (%" PRIu64 " * " "%" PRId64 ")",
317 new_period, compute_wdiff_w2, old_period, compute_wdiff_w1);
320 static int formula_fprintf(struct hist_entry *he, struct hist_entry *pair,
321 char *buf, size_t size)
325 case COMPUTE_DELTA_ABS:
326 return formula_delta(he, pair, buf, size);
328 return formula_ratio(he, pair, buf, size);
329 case COMPUTE_WEIGHTED_DIFF:
330 return formula_wdiff(he, pair, buf, size);
338 static int diff__process_sample_event(struct perf_tool *tool,
339 union perf_event *event,
340 struct perf_sample *sample,
341 struct perf_evsel *evsel,
342 struct machine *machine)
344 struct perf_diff *pdiff = container_of(tool, struct perf_diff, tool);
345 struct addr_location al;
346 struct hists *hists = evsel__hists(evsel);
349 if (perf_time__ranges_skip_sample(pdiff->ptime_range, pdiff->range_num,
354 if (machine__resolve(machine, &al, sample) < 0) {
355 pr_warning("problem processing %d event, skipping it.\n",
360 if (cpu_list && !test_bit(sample->cpu, cpu_bitmap)) {
365 if (!hists__add_entry(hists, &al, NULL, NULL, NULL, sample, true)) {
366 pr_warning("problem incrementing symbol period, skipping event\n");
371 * The total_period is updated here before going to the output
372 * tree since normally only the baseline hists will call
373 * hists__output_resort() and precompute needs the total
374 * period in order to sort entries by percentage delta.
376 hists->stats.total_period += sample->period;
378 hists->stats.total_non_filtered_period += sample->period;
381 addr_location__put(&al);
385 static struct perf_diff pdiff = {
387 .sample = diff__process_sample_event,
388 .mmap = perf_event__process_mmap,
389 .mmap2 = perf_event__process_mmap2,
390 .comm = perf_event__process_comm,
391 .exit = perf_event__process_exit,
392 .fork = perf_event__process_fork,
393 .lost = perf_event__process_lost,
394 .namespaces = perf_event__process_namespaces,
395 .ordered_events = true,
396 .ordering_requires_timestamps = true,
400 static struct perf_evsel *evsel_match(struct perf_evsel *evsel,
401 struct perf_evlist *evlist)
403 struct perf_evsel *e;
405 evlist__for_each_entry(evlist, e) {
406 if (perf_evsel__match2(evsel, e))
413 static void perf_evlist__collapse_resort(struct perf_evlist *evlist)
415 struct perf_evsel *evsel;
417 evlist__for_each_entry(evlist, evsel) {
418 struct hists *hists = evsel__hists(evsel);
420 hists__collapse_resort(hists, NULL);
424 static struct data__file *fmt_to_data_file(struct perf_hpp_fmt *fmt)
426 struct diff_hpp_fmt *dfmt = container_of(fmt, struct diff_hpp_fmt, fmt);
427 void *ptr = dfmt - dfmt->idx;
428 struct data__file *d = container_of(ptr, struct data__file, fmt);
433 static struct hist_entry*
434 get_pair_data(struct hist_entry *he, struct data__file *d)
436 if (hist_entry__has_pairs(he)) {
437 struct hist_entry *pair;
439 list_for_each_entry(pair, &he->pairs.head, pairs.node)
440 if (pair->hists == d->hists)
447 static struct hist_entry*
448 get_pair_fmt(struct hist_entry *he, struct diff_hpp_fmt *dfmt)
450 struct data__file *d = fmt_to_data_file(&dfmt->fmt);
452 return get_pair_data(he, d);
455 static void hists__baseline_only(struct hists *hists)
457 struct rb_root_cached *root;
458 struct rb_node *next;
460 if (hists__has(hists, need_collapse))
461 root = &hists->entries_collapsed;
463 root = hists->entries_in;
465 next = rb_first_cached(root);
466 while (next != NULL) {
467 struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node_in);
469 next = rb_next(&he->rb_node_in);
470 if (!hist_entry__next_pair(he)) {
471 rb_erase_cached(&he->rb_node_in, root);
472 hist_entry__delete(he);
477 static void hists__precompute(struct hists *hists)
479 struct rb_root_cached *root;
480 struct rb_node *next;
482 if (hists__has(hists, need_collapse))
483 root = &hists->entries_collapsed;
485 root = hists->entries_in;
487 next = rb_first_cached(root);
488 while (next != NULL) {
489 struct hist_entry *he, *pair;
490 struct data__file *d;
493 he = rb_entry(next, struct hist_entry, rb_node_in);
494 next = rb_next(&he->rb_node_in);
496 data__for_each_file_new(i, d) {
497 pair = get_pair_data(he, d);
503 case COMPUTE_DELTA_ABS:
504 compute_delta(he, pair);
507 compute_ratio(he, pair);
509 case COMPUTE_WEIGHTED_DIFF:
510 compute_wdiff(he, pair);
519 static int64_t cmp_doubles(double l, double r)
530 __hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
536 double l = left->diff.period_ratio_delta;
537 double r = right->diff.period_ratio_delta;
539 return cmp_doubles(l, r);
541 case COMPUTE_DELTA_ABS:
543 double l = fabs(left->diff.period_ratio_delta);
544 double r = fabs(right->diff.period_ratio_delta);
546 return cmp_doubles(l, r);
550 double l = left->diff.period_ratio;
551 double r = right->diff.period_ratio;
553 return cmp_doubles(l, r);
555 case COMPUTE_WEIGHTED_DIFF:
557 s64 l = left->diff.wdiff;
558 s64 r = right->diff.wdiff;
570 hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
573 bool pairs_left = hist_entry__has_pairs(left);
574 bool pairs_right = hist_entry__has_pairs(right);
575 struct hist_entry *p_right, *p_left;
577 if (!pairs_left && !pairs_right)
580 if (!pairs_left || !pairs_right)
581 return pairs_left ? -1 : 1;
583 p_left = get_pair_data(left, &data__files[sort_idx]);
584 p_right = get_pair_data(right, &data__files[sort_idx]);
586 if (!p_left && !p_right)
589 if (!p_left || !p_right)
590 return p_left ? -1 : 1;
593 * We have 2 entries of same kind, let's
594 * make the data comparison.
596 return __hist_entry__cmp_compute(p_left, p_right, c);
600 hist_entry__cmp_compute_idx(struct hist_entry *left, struct hist_entry *right,
603 struct hist_entry *p_right, *p_left;
605 p_left = get_pair_data(left, &data__files[sort_idx]);
606 p_right = get_pair_data(right, &data__files[sort_idx]);
608 if (!p_left && !p_right)
611 if (!p_left || !p_right)
612 return p_left ? -1 : 1;
614 if (c != COMPUTE_DELTA && c != COMPUTE_DELTA_ABS) {
616 * The delta can be computed without the baseline, but
617 * others are not. Put those entries which have no
620 if (left->dummy && right->dummy)
623 if (left->dummy || right->dummy)
624 return left->dummy ? 1 : -1;
627 return __hist_entry__cmp_compute(p_left, p_right, c);
631 hist_entry__cmp_nop(struct perf_hpp_fmt *fmt __maybe_unused,
632 struct hist_entry *left __maybe_unused,
633 struct hist_entry *right __maybe_unused)
639 hist_entry__cmp_baseline(struct perf_hpp_fmt *fmt __maybe_unused,
640 struct hist_entry *left, struct hist_entry *right)
642 if (left->stat.period == right->stat.period)
644 return left->stat.period > right->stat.period ? 1 : -1;
648 hist_entry__cmp_delta(struct perf_hpp_fmt *fmt,
649 struct hist_entry *left, struct hist_entry *right)
651 struct data__file *d = fmt_to_data_file(fmt);
653 return hist_entry__cmp_compute(right, left, COMPUTE_DELTA, d->idx);
657 hist_entry__cmp_delta_abs(struct perf_hpp_fmt *fmt,
658 struct hist_entry *left, struct hist_entry *right)
660 struct data__file *d = fmt_to_data_file(fmt);
662 return hist_entry__cmp_compute(right, left, COMPUTE_DELTA_ABS, d->idx);
666 hist_entry__cmp_ratio(struct perf_hpp_fmt *fmt,
667 struct hist_entry *left, struct hist_entry *right)
669 struct data__file *d = fmt_to_data_file(fmt);
671 return hist_entry__cmp_compute(right, left, COMPUTE_RATIO, d->idx);
675 hist_entry__cmp_wdiff(struct perf_hpp_fmt *fmt,
676 struct hist_entry *left, struct hist_entry *right)
678 struct data__file *d = fmt_to_data_file(fmt);
680 return hist_entry__cmp_compute(right, left, COMPUTE_WEIGHTED_DIFF, d->idx);
684 hist_entry__cmp_delta_idx(struct perf_hpp_fmt *fmt __maybe_unused,
685 struct hist_entry *left, struct hist_entry *right)
687 return hist_entry__cmp_compute_idx(right, left, COMPUTE_DELTA,
692 hist_entry__cmp_delta_abs_idx(struct perf_hpp_fmt *fmt __maybe_unused,
693 struct hist_entry *left, struct hist_entry *right)
695 return hist_entry__cmp_compute_idx(right, left, COMPUTE_DELTA_ABS,
700 hist_entry__cmp_ratio_idx(struct perf_hpp_fmt *fmt __maybe_unused,
701 struct hist_entry *left, struct hist_entry *right)
703 return hist_entry__cmp_compute_idx(right, left, COMPUTE_RATIO,
708 hist_entry__cmp_wdiff_idx(struct perf_hpp_fmt *fmt __maybe_unused,
709 struct hist_entry *left, struct hist_entry *right)
711 return hist_entry__cmp_compute_idx(right, left, COMPUTE_WEIGHTED_DIFF,
715 static void hists__process(struct hists *hists)
717 if (show_baseline_only)
718 hists__baseline_only(hists);
720 hists__precompute(hists);
721 hists__output_resort(hists, NULL);
723 hists__fprintf(hists, !quiet, 0, 0, 0, stdout,
724 !symbol_conf.use_callchain);
727 static void data__fprintf(void)
729 struct data__file *d;
732 fprintf(stdout, "# Data files:\n");
734 data__for_each_file(i, d)
735 fprintf(stdout, "# [%d] %s %s\n",
736 d->idx, d->data.path,
737 !d->idx ? "(Baseline)" : "");
739 fprintf(stdout, "#\n");
742 static void data_process(void)
744 struct perf_evlist *evlist_base = data__files[0].session->evlist;
745 struct perf_evsel *evsel_base;
748 evlist__for_each_entry(evlist_base, evsel_base) {
749 struct hists *hists_base = evsel__hists(evsel_base);
750 struct data__file *d;
753 data__for_each_file_new(i, d) {
754 struct perf_evlist *evlist = d->session->evlist;
755 struct perf_evsel *evsel;
758 evsel = evsel_match(evsel_base, evlist);
762 hists = evsel__hists(evsel);
765 hists__match(hists_base, hists);
767 if (!show_baseline_only)
768 hists__link(hists_base, hists);
772 fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
773 perf_evsel__name(evsel_base));
778 if (verbose > 0 || ((data__files_cnt > 2) && !quiet))
781 /* Don't sort callchain for perf diff */
782 perf_evsel__reset_sample_bit(evsel_base, CALLCHAIN);
784 hists__process(hists_base);
788 static void data__free(struct data__file *d)
792 for (col = 0; col < PERF_HPP_DIFF__MAX_INDEX; col++) {
793 struct diff_hpp_fmt *fmt = &d->fmt[col];
799 static int abstime_str_dup(char **pstr)
803 if (pdiff.time_str && strchr(pdiff.time_str, ':')) {
804 str = strdup(pdiff.time_str);
813 static int parse_absolute_time(struct data__file *d, char **pstr)
819 * Absolute timestamp for one file has the format: a.b,c.d
820 * For multiple files, the format is: a.b,c.d:a.b,c.d
822 p = strchr(*pstr, ':');
825 pr_err("Invalid time string\n");
832 pr_err("Invalid time string\n");
837 ret = perf_time__parse_for_ranges(*pstr, d->session,
852 static int parse_percent_time(struct data__file *d)
856 ret = perf_time__parse_for_ranges(pdiff.time_str, d->session,
863 static int parse_time_str(struct data__file *d, char *abstime_ostr,
869 ret = parse_absolute_time(d, pabstime_tmp);
870 else if (pdiff.time_str)
871 ret = parse_percent_time(d);
876 static int __cmd_diff(void)
878 struct data__file *d;
880 char *abstime_ostr, *abstime_tmp;
882 ret = abstime_str_dup(&abstime_ostr);
886 abstime_tmp = abstime_ostr;
889 data__for_each_file(i, d) {
890 d->session = perf_session__new(&d->data, false, &pdiff.tool);
892 pr_err("Failed to open %s\n", d->data.path);
897 if (pdiff.time_str) {
898 ret = parse_time_str(d, abstime_ostr, &abstime_tmp);
904 ret = perf_session__cpu_bitmap(d->session, cpu_list,
910 ret = perf_session__process_events(d->session);
912 pr_err("Failed to process %s\n", d->data.path);
916 perf_evlist__collapse_resort(d->session->evlist);
918 if (pdiff.ptime_range)
919 zfree(&pdiff.ptime_range);
925 data__for_each_file(i, d) {
926 perf_session__delete(d->session);
932 if (pdiff.ptime_range)
933 zfree(&pdiff.ptime_range);
941 static const char * const diff_usage[] = {
942 "perf diff [<options>] [old_file] [new_file]",
946 static const struct option options[] = {
947 OPT_INCR('v', "verbose", &verbose,
948 "be more verbose (show symbol address, etc)"),
949 OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
950 OPT_BOOLEAN('b', "baseline-only", &show_baseline_only,
951 "Show only items with match in baseline"),
952 OPT_CALLBACK('c', "compute", &compute,
953 "delta,delta-abs,ratio,wdiff:w1,w2 (default delta-abs)",
954 "Entries differential computation selection",
956 OPT_BOOLEAN('p', "period", &show_period,
957 "Show period values."),
958 OPT_BOOLEAN('F', "formula", &show_formula,
960 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
961 "dump raw trace in ASCII"),
962 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
963 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
964 "file", "kallsyms pathname"),
965 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
966 "load module symbols - WARNING: use only with -k and LIVE kernel"),
967 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
968 "only consider symbols in these dsos"),
969 OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
970 "only consider symbols in these comms"),
971 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
972 "only consider these symbols"),
973 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
974 "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
975 " Please refer the man page for the complete list."),
976 OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
977 "separator for columns, no spaces will be added between "
978 "columns '.' is reserved."),
979 OPT_CALLBACK(0, "symfs", NULL, "directory",
980 "Look for files with symbols relative to this directory",
981 symbol__config_symfs),
982 OPT_UINTEGER('o', "order", &sort_compute, "Specify compute sorting."),
983 OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
984 "How to display percentage of filtered entries", parse_filter_percentage),
985 OPT_STRING(0, "time", &pdiff.time_str, "str",
986 "Time span (time percent or absolute timestamp)"),
987 OPT_STRING(0, "cpu", &cpu_list, "cpu", "list of cpus to profile"),
988 OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
989 "only consider symbols in these pids"),
990 OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
991 "only consider symbols in these tids"),
995 static double baseline_percent(struct hist_entry *he)
997 u64 total = hists__total_period(he->hists);
999 return 100.0 * he->stat.period / total;
1002 static int hpp__color_baseline(struct perf_hpp_fmt *fmt,
1003 struct perf_hpp *hpp, struct hist_entry *he)
1005 struct diff_hpp_fmt *dfmt =
1006 container_of(fmt, struct diff_hpp_fmt, fmt);
1007 double percent = baseline_percent(he);
1008 char pfmt[20] = " ";
1011 scnprintf(pfmt, 20, "%%%d.2f%%%%", dfmt->header_width - 1);
1012 return percent_color_snprintf(hpp->buf, hpp->size,
1015 return scnprintf(hpp->buf, hpp->size, "%*s",
1016 dfmt->header_width, pfmt);
1019 static int hpp__entry_baseline(struct hist_entry *he, char *buf, size_t size)
1021 double percent = baseline_percent(he);
1022 const char *fmt = symbol_conf.field_sep ? "%.2f" : "%6.2f%%";
1026 ret = scnprintf(buf, size, fmt, percent);
1031 static int __hpp__color_compare(struct perf_hpp_fmt *fmt,
1032 struct perf_hpp *hpp, struct hist_entry *he,
1033 int comparison_method)
1035 struct diff_hpp_fmt *dfmt =
1036 container_of(fmt, struct diff_hpp_fmt, fmt);
1037 struct hist_entry *pair = get_pair_fmt(he, dfmt);
1040 char pfmt[20] = " ";
1045 switch (comparison_method) {
1047 if (pair->diff.computed)
1048 diff = pair->diff.period_ratio_delta;
1050 diff = compute_delta(he, pair);
1052 scnprintf(pfmt, 20, "%%%+d.2f%%%%", dfmt->header_width - 1);
1053 return percent_color_snprintf(hpp->buf, hpp->size,
1058 if (pair->diff.computed)
1059 diff = pair->diff.period_ratio;
1061 diff = compute_ratio(he, pair);
1063 scnprintf(pfmt, 20, "%%%d.6f", dfmt->header_width);
1064 return value_color_snprintf(hpp->buf, hpp->size,
1066 case COMPUTE_WEIGHTED_DIFF:
1069 if (pair->diff.computed)
1070 wdiff = pair->diff.wdiff;
1072 wdiff = compute_wdiff(he, pair);
1074 scnprintf(pfmt, 20, "%%14ld", dfmt->header_width);
1075 return color_snprintf(hpp->buf, hpp->size,
1076 get_percent_color(wdiff),
1082 return scnprintf(hpp->buf, hpp->size, "%*s",
1083 dfmt->header_width, "N/A");
1085 return scnprintf(hpp->buf, hpp->size, "%*s",
1086 dfmt->header_width, pfmt);
1089 static int hpp__color_delta(struct perf_hpp_fmt *fmt,
1090 struct perf_hpp *hpp, struct hist_entry *he)
1092 return __hpp__color_compare(fmt, hpp, he, COMPUTE_DELTA);
1095 static int hpp__color_ratio(struct perf_hpp_fmt *fmt,
1096 struct perf_hpp *hpp, struct hist_entry *he)
1098 return __hpp__color_compare(fmt, hpp, he, COMPUTE_RATIO);
1101 static int hpp__color_wdiff(struct perf_hpp_fmt *fmt,
1102 struct perf_hpp *hpp, struct hist_entry *he)
1104 return __hpp__color_compare(fmt, hpp, he, COMPUTE_WEIGHTED_DIFF);
1108 hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size)
1111 case PERF_HPP_DIFF__PERIOD_BASELINE:
1112 scnprintf(buf, size, "%" PRIu64, he->stat.period);
1121 hpp__entry_pair(struct hist_entry *he, struct hist_entry *pair,
1122 int idx, char *buf, size_t size)
1129 case PERF_HPP_DIFF__DELTA:
1130 case PERF_HPP_DIFF__DELTA_ABS:
1131 if (pair->diff.computed)
1132 diff = pair->diff.period_ratio_delta;
1134 diff = compute_delta(he, pair);
1136 scnprintf(buf, size, "%+4.2F%%", diff);
1139 case PERF_HPP_DIFF__RATIO:
1140 /* No point for ratio number if we are dummy.. */
1142 scnprintf(buf, size, "N/A");
1146 if (pair->diff.computed)
1147 ratio = pair->diff.period_ratio;
1149 ratio = compute_ratio(he, pair);
1152 scnprintf(buf, size, "%14.6F", ratio);
1155 case PERF_HPP_DIFF__WEIGHTED_DIFF:
1156 /* No point for wdiff number if we are dummy.. */
1158 scnprintf(buf, size, "N/A");
1162 if (pair->diff.computed)
1163 wdiff = pair->diff.wdiff;
1165 wdiff = compute_wdiff(he, pair);
1168 scnprintf(buf, size, "%14ld", wdiff);
1171 case PERF_HPP_DIFF__FORMULA:
1172 formula_fprintf(he, pair, buf, size);
1175 case PERF_HPP_DIFF__PERIOD:
1176 scnprintf(buf, size, "%" PRIu64, pair->stat.period);
1185 __hpp__entry_global(struct hist_entry *he, struct diff_hpp_fmt *dfmt,
1186 char *buf, size_t size)
1188 struct hist_entry *pair = get_pair_fmt(he, dfmt);
1189 int idx = dfmt->idx;
1191 /* baseline is special */
1192 if (idx == PERF_HPP_DIFF__BASELINE)
1193 hpp__entry_baseline(he, buf, size);
1196 hpp__entry_pair(he, pair, idx, buf, size);
1198 hpp__entry_unpair(he, idx, buf, size);
1202 static int hpp__entry_global(struct perf_hpp_fmt *_fmt, struct perf_hpp *hpp,
1203 struct hist_entry *he)
1205 struct diff_hpp_fmt *dfmt =
1206 container_of(_fmt, struct diff_hpp_fmt, fmt);
1207 char buf[MAX_COL_WIDTH] = " ";
1209 __hpp__entry_global(he, dfmt, buf, MAX_COL_WIDTH);
1211 if (symbol_conf.field_sep)
1212 return scnprintf(hpp->buf, hpp->size, "%s", buf);
1214 return scnprintf(hpp->buf, hpp->size, "%*s",
1215 dfmt->header_width, buf);
1218 static int hpp__header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1219 struct hists *hists __maybe_unused,
1220 int line __maybe_unused,
1221 int *span __maybe_unused)
1223 struct diff_hpp_fmt *dfmt =
1224 container_of(fmt, struct diff_hpp_fmt, fmt);
1226 BUG_ON(!dfmt->header);
1227 return scnprintf(hpp->buf, hpp->size, dfmt->header);
1230 static int hpp__width(struct perf_hpp_fmt *fmt,
1231 struct perf_hpp *hpp __maybe_unused,
1232 struct hists *hists __maybe_unused)
1234 struct diff_hpp_fmt *dfmt =
1235 container_of(fmt, struct diff_hpp_fmt, fmt);
1237 BUG_ON(dfmt->header_width <= 0);
1238 return dfmt->header_width;
1241 static void init_header(struct data__file *d, struct diff_hpp_fmt *dfmt)
1243 #define MAX_HEADER_NAME 100
1244 char buf_indent[MAX_HEADER_NAME];
1245 char buf[MAX_HEADER_NAME];
1246 const char *header = NULL;
1249 BUG_ON(dfmt->idx >= PERF_HPP_DIFF__MAX_INDEX);
1250 header = columns[dfmt->idx].name;
1251 width = columns[dfmt->idx].width;
1253 /* Only our defined HPP fmts should appear here. */
1256 if (data__files_cnt > 2)
1257 scnprintf(buf, MAX_HEADER_NAME, "%s/%d", header, d->idx);
1259 #define NAME (data__files_cnt > 2 ? buf : header)
1260 dfmt->header_width = width;
1261 width = (int) strlen(NAME);
1262 if (dfmt->header_width < width)
1263 dfmt->header_width = width;
1265 scnprintf(buf_indent, MAX_HEADER_NAME, "%*s",
1266 dfmt->header_width, NAME);
1268 dfmt->header = strdup(buf_indent);
1269 #undef MAX_HEADER_NAME
1273 static void data__hpp_register(struct data__file *d, int idx)
1275 struct diff_hpp_fmt *dfmt = &d->fmt[idx];
1276 struct perf_hpp_fmt *fmt = &dfmt->fmt;
1280 fmt->header = hpp__header;
1281 fmt->width = hpp__width;
1282 fmt->entry = hpp__entry_global;
1283 fmt->cmp = hist_entry__cmp_nop;
1284 fmt->collapse = hist_entry__cmp_nop;
1286 /* TODO more colors */
1288 case PERF_HPP_DIFF__BASELINE:
1289 fmt->color = hpp__color_baseline;
1290 fmt->sort = hist_entry__cmp_baseline;
1292 case PERF_HPP_DIFF__DELTA:
1293 fmt->color = hpp__color_delta;
1294 fmt->sort = hist_entry__cmp_delta;
1296 case PERF_HPP_DIFF__RATIO:
1297 fmt->color = hpp__color_ratio;
1298 fmt->sort = hist_entry__cmp_ratio;
1300 case PERF_HPP_DIFF__WEIGHTED_DIFF:
1301 fmt->color = hpp__color_wdiff;
1302 fmt->sort = hist_entry__cmp_wdiff;
1304 case PERF_HPP_DIFF__DELTA_ABS:
1305 fmt->color = hpp__color_delta;
1306 fmt->sort = hist_entry__cmp_delta_abs;
1309 fmt->sort = hist_entry__cmp_nop;
1313 init_header(d, dfmt);
1314 perf_hpp__column_register(fmt);
1315 perf_hpp__register_sort_field(fmt);
1318 static int ui_init(void)
1320 struct data__file *d;
1321 struct perf_hpp_fmt *fmt;
1324 data__for_each_file(i, d) {
1327 * Baseline or compute realted columns:
1329 * PERF_HPP_DIFF__BASELINE
1330 * PERF_HPP_DIFF__DELTA
1331 * PERF_HPP_DIFF__RATIO
1332 * PERF_HPP_DIFF__WEIGHTED_DIFF
1334 data__hpp_register(d, i ? compute_2_hpp[compute] :
1335 PERF_HPP_DIFF__BASELINE);
1340 * PERF_HPP_DIFF__FORMULA
1341 * PERF_HPP_DIFF__PERIOD
1342 * PERF_HPP_DIFF__PERIOD_BASELINE
1344 if (show_formula && i)
1345 data__hpp_register(d, PERF_HPP_DIFF__FORMULA);
1348 data__hpp_register(d, i ? PERF_HPP_DIFF__PERIOD :
1349 PERF_HPP_DIFF__PERIOD_BASELINE);
1356 * Prepend an fmt to sort on columns at 'sort_compute' first.
1357 * This fmt is added only to the sort list but not to the
1358 * output fields list.
1360 * Note that this column (data) can be compared twice - one
1361 * for this 'sort_compute' fmt and another for the normal
1362 * diff_hpp_fmt. But it shouldn't a problem as most entries
1363 * will be sorted out by first try or baseline and comparing
1364 * is not a costly operation.
1366 fmt = zalloc(sizeof(*fmt));
1368 pr_err("Memory allocation failed\n");
1372 fmt->cmp = hist_entry__cmp_nop;
1373 fmt->collapse = hist_entry__cmp_nop;
1377 fmt->sort = hist_entry__cmp_delta_idx;
1380 fmt->sort = hist_entry__cmp_ratio_idx;
1382 case COMPUTE_WEIGHTED_DIFF:
1383 fmt->sort = hist_entry__cmp_wdiff_idx;
1385 case COMPUTE_DELTA_ABS:
1386 fmt->sort = hist_entry__cmp_delta_abs_idx;
1392 perf_hpp__prepend_sort_field(fmt);
1396 static int data_init(int argc, const char **argv)
1398 struct data__file *d;
1399 static const char *defaults[] = {
1403 bool use_default = true;
1406 data__files_cnt = 2;
1410 defaults[1] = argv[0];
1412 data__files_cnt = argc;
1413 use_default = false;
1415 } else if (perf_guest) {
1416 defaults[0] = "perf.data.host";
1417 defaults[1] = "perf.data.guest";
1420 if (sort_compute >= (unsigned int) data__files_cnt) {
1421 pr_err("Order option out of limit.\n");
1425 data__files = zalloc(sizeof(*data__files) * data__files_cnt);
1429 data__for_each_file(i, d) {
1430 struct perf_data *data = &d->data;
1432 data->path = use_default ? defaults[i] : argv[i];
1433 data->mode = PERF_DATA_MODE_READ,
1434 data->force = force,
1442 static int diff__config(const char *var, const char *value,
1443 void *cb __maybe_unused)
1445 if (!strcmp(var, "diff.order")) {
1447 if (perf_config_int(&ret, var, value) < 0)
1452 if (!strcmp(var, "diff.compute")) {
1453 if (!strcmp(value, "delta")) {
1454 compute = COMPUTE_DELTA;
1455 } else if (!strcmp(value, "delta-abs")) {
1456 compute = COMPUTE_DELTA_ABS;
1457 } else if (!strcmp(value, "ratio")) {
1458 compute = COMPUTE_RATIO;
1459 } else if (!strcmp(value, "wdiff")) {
1460 compute = COMPUTE_WEIGHTED_DIFF;
1462 pr_err("Invalid compute method: %s\n", value);
1470 int cmd_diff(int argc, const char **argv)
1472 int ret = hists__init();
1477 perf_config(diff__config, NULL);
1479 argc = parse_options(argc, argv, options, diff_usage, 0);
1482 perf_quiet_option();
1484 if (symbol__init(NULL) < 0)
1487 if (data_init(argc, argv) < 0)
1493 sort__mode = SORT_MODE__DIFF;
1495 if (setup_sorting(NULL) < 0)
1496 usage_with_options(diff_usage, options);
1500 sort__setup_elide(NULL);
1502 return __cmd_diff();