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)
63 static char diff__default_sort_order
[] = "dso,symbol";
65 static bool show_period
;
66 static bool show_formula
;
67 static bool show_baseline_only
;
68 static unsigned int sort_compute
;
70 static s64 compute_wdiff_w1
;
71 static s64 compute_wdiff_w2
;
76 COMPUTE_WEIGHTED_DIFF
,
80 const char *compute_names
[COMPUTE_MAX
] = {
81 [COMPUTE_DELTA
] = "delta",
82 [COMPUTE_RATIO
] = "ratio",
83 [COMPUTE_WEIGHTED_DIFF
] = "wdiff",
88 static int compute_2_hpp
[COMPUTE_MAX
] = {
89 [COMPUTE_DELTA
] = PERF_HPP_DIFF__DELTA
,
90 [COMPUTE_RATIO
] = PERF_HPP_DIFF__RATIO
,
91 [COMPUTE_WEIGHTED_DIFF
] = PERF_HPP_DIFF__WEIGHTED_DIFF
,
94 #define MAX_COL_WIDTH 70
96 static struct header_column
{
99 } columns
[PERF_HPP_DIFF__MAX_INDEX
] = {
100 [PERF_HPP_DIFF__BASELINE
] = {
103 [PERF_HPP_DIFF__PERIOD
] = {
107 [PERF_HPP_DIFF__PERIOD_BASELINE
] = {
108 .name
= "Base period",
111 [PERF_HPP_DIFF__DELTA
] = {
115 [PERF_HPP_DIFF__RATIO
] = {
119 [PERF_HPP_DIFF__WEIGHTED_DIFF
] = {
120 .name
= "Weighted diff",
123 [PERF_HPP_DIFF__FORMULA
] = {
125 .width
= MAX_COL_WIDTH
,
129 static int setup_compute_opt_wdiff(char *opt
)
139 w2_str
= strchr(opt
, ',');
147 compute_wdiff_w1
= strtol(w1_str
, NULL
, 10);
148 compute_wdiff_w2
= strtol(w2_str
, NULL
, 10);
150 if (!compute_wdiff_w1
|| !compute_wdiff_w2
)
153 pr_debug("compute wdiff w1(%" PRId64
") w2(%" PRId64
")\n",
154 compute_wdiff_w1
, compute_wdiff_w2
);
160 pr_err("Failed: wrong weight data, use 'wdiff:w1,w2'\n");
165 static int setup_compute_opt(char *opt
)
167 if (compute
== COMPUTE_WEIGHTED_DIFF
)
168 return setup_compute_opt_wdiff(opt
);
171 pr_err("Failed: extra option specified '%s'", opt
);
178 static int setup_compute(const struct option
*opt
, const char *str
,
179 int unset __maybe_unused
)
181 int *cp
= (int *) opt
->value
;
182 char *cstr
= (char *) str
;
192 option
= strchr(str
, ':');
194 unsigned len
= option
++ - str
;
197 * The str data are not writeable, so we need
198 * to use another buffer.
201 /* No option value is longer. */
202 if (len
>= sizeof(buf
))
205 strncpy(buf
, str
, len
);
210 for (i
= 0; i
< COMPUTE_MAX
; i
++)
211 if (!strcmp(cstr
, compute_names
[i
])) {
213 return setup_compute_opt(option
);
216 pr_err("Failed: '%s' is not computation method "
217 "(use 'delta','ratio' or 'wdiff')\n", str
);
221 static double period_percent(struct hist_entry
*he
, u64 period
)
223 u64 total
= he
->hists
->stats
.total_period
;
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 return scnprintf(buf
, size
,
263 "(%" PRIu64
" * 100 / %" PRIu64
") - "
264 "(%" PRIu64
" * 100 / %" PRIu64
")",
265 pair
->stat
.period
, pair
->hists
->stats
.total_period
,
266 he
->stat
.period
, he
->hists
->stats
.total_period
);
269 static int formula_ratio(struct hist_entry
*he
, struct hist_entry
*pair
,
270 char *buf
, size_t size
)
272 double old_period
= he
->stat
.period
;
273 double new_period
= pair
->stat
.period
;
275 return scnprintf(buf
, size
, "%.0F / %.0F", new_period
, old_period
);
278 static int formula_wdiff(struct hist_entry
*he
, struct hist_entry
*pair
,
279 char *buf
, size_t size
)
281 u64 old_period
= he
->stat
.period
;
282 u64 new_period
= pair
->stat
.period
;
284 return scnprintf(buf
, size
,
285 "(%" PRIu64
" * " "%" PRId64
") - (%" PRIu64
" * " "%" PRId64
")",
286 new_period
, compute_wdiff_w2
, old_period
, compute_wdiff_w1
);
289 static int formula_fprintf(struct hist_entry
*he
, struct hist_entry
*pair
,
290 char *buf
, size_t size
)
294 return formula_delta(he
, pair
, buf
, size
);
296 return formula_ratio(he
, pair
, buf
, size
);
297 case COMPUTE_WEIGHTED_DIFF
:
298 return formula_wdiff(he
, pair
, buf
, size
);
306 static int hists__add_entry(struct hists
*hists
,
307 struct addr_location
*al
, u64 period
,
308 u64 weight
, u64 transaction
)
310 if (__hists__add_entry(hists
, al
, NULL
, NULL
, NULL
, period
, weight
,
311 transaction
) != NULL
)
316 static int diff__process_sample_event(struct perf_tool
*tool __maybe_unused
,
317 union perf_event
*event
,
318 struct perf_sample
*sample
,
319 struct perf_evsel
*evsel
,
320 struct machine
*machine
)
322 struct addr_location al
;
324 if (perf_event__preprocess_sample(event
, machine
, &al
, sample
) < 0) {
325 pr_warning("problem processing %d event, skipping it.\n",
333 if (hists__add_entry(&evsel
->hists
, &al
, sample
->period
,
334 sample
->weight
, sample
->transaction
)) {
335 pr_warning("problem incrementing symbol period, skipping event\n");
339 evsel
->hists
.stats
.total_period
+= sample
->period
;
343 static struct perf_tool tool
= {
344 .sample
= diff__process_sample_event
,
345 .mmap
= perf_event__process_mmap
,
346 .comm
= perf_event__process_comm
,
347 .exit
= perf_event__process_exit
,
348 .fork
= perf_event__process_fork
,
349 .lost
= perf_event__process_lost
,
350 .ordered_samples
= true,
351 .ordering_requires_timestamps
= true,
354 static struct perf_evsel
*evsel_match(struct perf_evsel
*evsel
,
355 struct perf_evlist
*evlist
)
357 struct perf_evsel
*e
;
359 list_for_each_entry(e
, &evlist
->entries
, node
)
360 if (perf_evsel__match2(evsel
, e
))
366 static void perf_evlist__collapse_resort(struct perf_evlist
*evlist
)
368 struct perf_evsel
*evsel
;
370 list_for_each_entry(evsel
, &evlist
->entries
, node
) {
371 struct hists
*hists
= &evsel
->hists
;
373 hists__collapse_resort(hists
, NULL
);
377 static struct hist_entry
*
378 get_pair_data(struct hist_entry
*he
, struct data__file
*d
)
380 if (hist_entry__has_pairs(he
)) {
381 struct hist_entry
*pair
;
383 list_for_each_entry(pair
, &he
->pairs
.head
, pairs
.node
)
384 if (pair
->hists
== d
->hists
)
391 static struct hist_entry
*
392 get_pair_fmt(struct hist_entry
*he
, struct diff_hpp_fmt
*dfmt
)
394 void *ptr
= dfmt
- dfmt
->idx
;
395 struct data__file
*d
= container_of(ptr
, struct data__file
, fmt
);
397 return get_pair_data(he
, d
);
400 static void hists__baseline_only(struct hists
*hists
)
402 struct rb_root
*root
;
403 struct rb_node
*next
;
405 if (sort__need_collapse
)
406 root
= &hists
->entries_collapsed
;
408 root
= hists
->entries_in
;
410 next
= rb_first(root
);
411 while (next
!= NULL
) {
412 struct hist_entry
*he
= rb_entry(next
, struct hist_entry
, rb_node_in
);
414 next
= rb_next(&he
->rb_node_in
);
415 if (!hist_entry__next_pair(he
)) {
416 rb_erase(&he
->rb_node_in
, root
);
417 hist_entry__free(he
);
422 static void hists__precompute(struct hists
*hists
)
424 struct rb_root
*root
;
425 struct rb_node
*next
;
427 if (sort__need_collapse
)
428 root
= &hists
->entries_collapsed
;
430 root
= hists
->entries_in
;
432 next
= rb_first(root
);
433 while (next
!= NULL
) {
434 struct hist_entry
*he
, *pair
;
436 he
= rb_entry(next
, struct hist_entry
, rb_node_in
);
437 next
= rb_next(&he
->rb_node_in
);
439 pair
= get_pair_data(he
, &data__files
[sort_compute
]);
445 compute_delta(he
, pair
);
448 compute_ratio(he
, pair
);
450 case COMPUTE_WEIGHTED_DIFF
:
451 compute_wdiff(he
, pair
);
459 static int64_t cmp_doubles(double l
, double r
)
470 __hist_entry__cmp_compute(struct hist_entry
*left
, struct hist_entry
*right
,
476 double l
= left
->diff
.period_ratio_delta
;
477 double r
= right
->diff
.period_ratio_delta
;
479 return cmp_doubles(l
, r
);
483 double l
= left
->diff
.period_ratio
;
484 double r
= right
->diff
.period_ratio
;
486 return cmp_doubles(l
, r
);
488 case COMPUTE_WEIGHTED_DIFF
:
490 s64 l
= left
->diff
.wdiff
;
491 s64 r
= right
->diff
.wdiff
;
503 hist_entry__cmp_compute(struct hist_entry
*left
, struct hist_entry
*right
,
506 bool pairs_left
= hist_entry__has_pairs(left
);
507 bool pairs_right
= hist_entry__has_pairs(right
);
508 struct hist_entry
*p_right
, *p_left
;
510 if (!pairs_left
&& !pairs_right
)
513 if (!pairs_left
|| !pairs_right
)
514 return pairs_left
? -1 : 1;
516 p_left
= get_pair_data(left
, &data__files
[sort_compute
]);
517 p_right
= get_pair_data(right
, &data__files
[sort_compute
]);
519 if (!p_left
&& !p_right
)
522 if (!p_left
|| !p_right
)
523 return p_left
? -1 : 1;
526 * We have 2 entries of same kind, let's
527 * make the data comparison.
529 return __hist_entry__cmp_compute(p_left
, p_right
, c
);
532 static void insert_hist_entry_by_compute(struct rb_root
*root
,
533 struct hist_entry
*he
,
536 struct rb_node
**p
= &root
->rb_node
;
537 struct rb_node
*parent
= NULL
;
538 struct hist_entry
*iter
;
542 iter
= rb_entry(parent
, struct hist_entry
, rb_node
);
543 if (hist_entry__cmp_compute(he
, iter
, c
) < 0)
549 rb_link_node(&he
->rb_node
, parent
, p
);
550 rb_insert_color(&he
->rb_node
, root
);
553 static void hists__compute_resort(struct hists
*hists
)
555 struct rb_root
*root
;
556 struct rb_node
*next
;
558 if (sort__need_collapse
)
559 root
= &hists
->entries_collapsed
;
561 root
= hists
->entries_in
;
563 hists
->entries
= RB_ROOT
;
564 next
= rb_first(root
);
566 hists
->nr_entries
= 0;
567 hists
->stats
.total_period
= 0;
568 hists__reset_col_len(hists
);
570 while (next
!= NULL
) {
571 struct hist_entry
*he
;
573 he
= rb_entry(next
, struct hist_entry
, rb_node_in
);
574 next
= rb_next(&he
->rb_node_in
);
576 insert_hist_entry_by_compute(&hists
->entries
, he
, compute
);
577 hists__inc_nr_entries(hists
, he
);
581 static void hists__process(struct hists
*hists
)
583 if (show_baseline_only
)
584 hists__baseline_only(hists
);
587 hists__precompute(hists
);
588 hists__compute_resort(hists
);
590 hists__output_resort(hists
);
593 hists__fprintf(hists
, true, 0, 0, 0, stdout
);
596 static void data__fprintf(void)
598 struct data__file
*d
;
601 fprintf(stdout
, "# Data files:\n");
603 data__for_each_file(i
, d
)
604 fprintf(stdout
, "# [%d] %s %s\n",
605 d
->idx
, d
->file
.path
,
606 !d
->idx
? "(Baseline)" : "");
608 fprintf(stdout
, "#\n");
611 static void data_process(void)
613 struct perf_evlist
*evlist_base
= data__files
[0].session
->evlist
;
614 struct perf_evsel
*evsel_base
;
617 list_for_each_entry(evsel_base
, &evlist_base
->entries
, node
) {
618 struct data__file
*d
;
621 data__for_each_file_new(i
, d
) {
622 struct perf_evlist
*evlist
= d
->session
->evlist
;
623 struct perf_evsel
*evsel
;
625 evsel
= evsel_match(evsel_base
, evlist
);
629 d
->hists
= &evsel
->hists
;
631 hists__match(&evsel_base
->hists
, &evsel
->hists
);
633 if (!show_baseline_only
)
634 hists__link(&evsel_base
->hists
,
638 fprintf(stdout
, "%s# Event '%s'\n#\n", first
? "" : "\n",
639 perf_evsel__name(evsel_base
));
643 if (verbose
|| data__files_cnt
> 2)
646 hists__process(&evsel_base
->hists
);
650 static void data__free(struct data__file
*d
)
654 for (col
= 0; col
< PERF_HPP_DIFF__MAX_INDEX
; col
++) {
655 struct diff_hpp_fmt
*fmt
= &d
->fmt
[col
];
661 static int __cmd_diff(void)
663 struct data__file
*d
;
664 int ret
= -EINVAL
, i
;
666 data__for_each_file(i
, d
) {
667 d
->session
= perf_session__new(&d
->file
, false, &tool
);
669 pr_err("Failed to open %s\n", d
->file
.path
);
674 ret
= perf_session__process_events(d
->session
, &tool
);
676 pr_err("Failed to process %s\n", d
->file
.path
);
680 perf_evlist__collapse_resort(d
->session
->evlist
);
686 data__for_each_file(i
, d
) {
688 perf_session__delete(d
->session
);
697 static const char * const diff_usage
[] = {
698 "perf diff [<options>] [old_file] [new_file]",
702 static const struct option options
[] = {
703 OPT_INCR('v', "verbose", &verbose
,
704 "be more verbose (show symbol address, etc)"),
705 OPT_BOOLEAN('b', "baseline-only", &show_baseline_only
,
706 "Show only items with match in baseline"),
707 OPT_CALLBACK('c', "compute", &compute
,
708 "delta,ratio,wdiff:w1,w2 (default delta)",
709 "Entries differential computation selection",
711 OPT_BOOLEAN('p', "period", &show_period
,
712 "Show period values."),
713 OPT_BOOLEAN('F', "formula", &show_formula
,
715 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace
,
716 "dump raw trace in ASCII"),
717 OPT_BOOLEAN('f', "force", &force
, "don't complain, do it"),
718 OPT_BOOLEAN('m', "modules", &symbol_conf
.use_modules
,
719 "load module symbols - WARNING: use only with -k and LIVE kernel"),
720 OPT_STRING('d', "dsos", &symbol_conf
.dso_list_str
, "dso[,dso...]",
721 "only consider symbols in these dsos"),
722 OPT_STRING('C', "comms", &symbol_conf
.comm_list_str
, "comm[,comm...]",
723 "only consider symbols in these comms"),
724 OPT_STRING('S', "symbols", &symbol_conf
.sym_list_str
, "symbol[,symbol...]",
725 "only consider these symbols"),
726 OPT_STRING('s', "sort", &sort_order
, "key[,key2...]",
727 "sort by key(s): pid, comm, dso, symbol, parent"),
728 OPT_STRING('t', "field-separator", &symbol_conf
.field_sep
, "separator",
729 "separator for columns, no spaces will be added between "
730 "columns '.' is reserved."),
731 OPT_STRING(0, "symfs", &symbol_conf
.symfs
, "directory",
732 "Look for files with symbols relative to this directory"),
733 OPT_UINTEGER('o', "order", &sort_compute
, "Specify compute sorting."),
737 static double baseline_percent(struct hist_entry
*he
)
739 struct hists
*hists
= he
->hists
;
740 return 100.0 * he
->stat
.period
/ hists
->stats
.total_period
;
743 static int hpp__color_baseline(struct perf_hpp_fmt
*fmt
,
744 struct perf_hpp
*hpp
, struct hist_entry
*he
)
746 struct diff_hpp_fmt
*dfmt
=
747 container_of(fmt
, struct diff_hpp_fmt
, fmt
);
748 double percent
= baseline_percent(he
);
752 scnprintf(pfmt
, 20, "%%%d.2f%%%%", dfmt
->header_width
- 1);
753 return percent_color_snprintf(hpp
->buf
, hpp
->size
,
756 return scnprintf(hpp
->buf
, hpp
->size
, "%*s",
757 dfmt
->header_width
, pfmt
);
760 static int hpp__entry_baseline(struct hist_entry
*he
, char *buf
, size_t size
)
762 double percent
= baseline_percent(he
);
763 const char *fmt
= symbol_conf
.field_sep
? "%.2f" : "%6.2f%%";
767 ret
= scnprintf(buf
, size
, fmt
, percent
);
773 hpp__entry_unpair(struct hist_entry
*he
, int idx
, char *buf
, size_t size
)
776 case PERF_HPP_DIFF__PERIOD_BASELINE
:
777 scnprintf(buf
, size
, "%" PRIu64
, he
->stat
.period
);
786 hpp__entry_pair(struct hist_entry
*he
, struct hist_entry
*pair
,
787 int idx
, char *buf
, size_t size
)
794 case PERF_HPP_DIFF__DELTA
:
795 if (pair
->diff
.computed
)
796 diff
= pair
->diff
.period_ratio_delta
;
798 diff
= compute_delta(he
, pair
);
800 if (fabs(diff
) >= 0.01)
801 scnprintf(buf
, size
, "%+4.2F%%", diff
);
804 case PERF_HPP_DIFF__RATIO
:
805 /* No point for ratio number if we are dummy.. */
809 if (pair
->diff
.computed
)
810 ratio
= pair
->diff
.period_ratio
;
812 ratio
= compute_ratio(he
, pair
);
815 scnprintf(buf
, size
, "%14.6F", ratio
);
818 case PERF_HPP_DIFF__WEIGHTED_DIFF
:
819 /* No point for wdiff number if we are dummy.. */
823 if (pair
->diff
.computed
)
824 wdiff
= pair
->diff
.wdiff
;
826 wdiff
= compute_wdiff(he
, pair
);
829 scnprintf(buf
, size
, "%14ld", wdiff
);
832 case PERF_HPP_DIFF__FORMULA
:
833 formula_fprintf(he
, pair
, buf
, size
);
836 case PERF_HPP_DIFF__PERIOD
:
837 scnprintf(buf
, size
, "%" PRIu64
, pair
->stat
.period
);
846 __hpp__entry_global(struct hist_entry
*he
, struct diff_hpp_fmt
*dfmt
,
847 char *buf
, size_t size
)
849 struct hist_entry
*pair
= get_pair_fmt(he
, dfmt
);
852 /* baseline is special */
853 if (idx
== PERF_HPP_DIFF__BASELINE
)
854 hpp__entry_baseline(he
, buf
, size
);
857 hpp__entry_pair(he
, pair
, idx
, buf
, size
);
859 hpp__entry_unpair(he
, idx
, buf
, size
);
863 static int hpp__entry_global(struct perf_hpp_fmt
*_fmt
, struct perf_hpp
*hpp
,
864 struct hist_entry
*he
)
866 struct diff_hpp_fmt
*dfmt
=
867 container_of(_fmt
, struct diff_hpp_fmt
, fmt
);
868 char buf
[MAX_COL_WIDTH
] = " ";
870 __hpp__entry_global(he
, dfmt
, buf
, MAX_COL_WIDTH
);
872 if (symbol_conf
.field_sep
)
873 return scnprintf(hpp
->buf
, hpp
->size
, "%s", buf
);
875 return scnprintf(hpp
->buf
, hpp
->size
, "%*s",
876 dfmt
->header_width
, buf
);
879 static int hpp__header(struct perf_hpp_fmt
*fmt
,
880 struct perf_hpp
*hpp
)
882 struct diff_hpp_fmt
*dfmt
=
883 container_of(fmt
, struct diff_hpp_fmt
, fmt
);
885 BUG_ON(!dfmt
->header
);
886 return scnprintf(hpp
->buf
, hpp
->size
, dfmt
->header
);
889 static int hpp__width(struct perf_hpp_fmt
*fmt
,
890 struct perf_hpp
*hpp __maybe_unused
)
892 struct diff_hpp_fmt
*dfmt
=
893 container_of(fmt
, struct diff_hpp_fmt
, fmt
);
895 BUG_ON(dfmt
->header_width
<= 0);
896 return dfmt
->header_width
;
899 static void init_header(struct data__file
*d
, struct diff_hpp_fmt
*dfmt
)
901 #define MAX_HEADER_NAME 100
902 char buf_indent
[MAX_HEADER_NAME
];
903 char buf
[MAX_HEADER_NAME
];
904 const char *header
= NULL
;
907 BUG_ON(dfmt
->idx
>= PERF_HPP_DIFF__MAX_INDEX
);
908 header
= columns
[dfmt
->idx
].name
;
909 width
= columns
[dfmt
->idx
].width
;
911 /* Only our defined HPP fmts should appear here. */
914 if (data__files_cnt
> 2)
915 scnprintf(buf
, MAX_HEADER_NAME
, "%s/%d", header
, d
->idx
);
917 #define NAME (data__files_cnt > 2 ? buf : header)
918 dfmt
->header_width
= width
;
919 width
= (int) strlen(NAME
);
920 if (dfmt
->header_width
< width
)
921 dfmt
->header_width
= width
;
923 scnprintf(buf_indent
, MAX_HEADER_NAME
, "%*s",
924 dfmt
->header_width
, NAME
);
926 dfmt
->header
= strdup(buf_indent
);
927 #undef MAX_HEADER_NAME
931 static void data__hpp_register(struct data__file
*d
, int idx
)
933 struct diff_hpp_fmt
*dfmt
= &d
->fmt
[idx
];
934 struct perf_hpp_fmt
*fmt
= &dfmt
->fmt
;
938 fmt
->header
= hpp__header
;
939 fmt
->width
= hpp__width
;
940 fmt
->entry
= hpp__entry_global
;
942 /* TODO more colors */
943 if (idx
== PERF_HPP_DIFF__BASELINE
)
944 fmt
->color
= hpp__color_baseline
;
946 init_header(d
, dfmt
);
947 perf_hpp__column_register(fmt
);
950 static void ui_init(void)
952 struct data__file
*d
;
955 data__for_each_file(i
, d
) {
958 * Baseline or compute realted columns:
960 * PERF_HPP_DIFF__BASELINE
961 * PERF_HPP_DIFF__DELTA
962 * PERF_HPP_DIFF__RATIO
963 * PERF_HPP_DIFF__WEIGHTED_DIFF
965 data__hpp_register(d
, i
? compute_2_hpp
[compute
] :
966 PERF_HPP_DIFF__BASELINE
);
971 * PERF_HPP_DIFF__FORMULA
972 * PERF_HPP_DIFF__PERIOD
973 * PERF_HPP_DIFF__PERIOD_BASELINE
975 if (show_formula
&& i
)
976 data__hpp_register(d
, PERF_HPP_DIFF__FORMULA
);
979 data__hpp_register(d
, i
? PERF_HPP_DIFF__PERIOD
:
980 PERF_HPP_DIFF__PERIOD_BASELINE
);
984 static int data_init(int argc
, const char **argv
)
986 struct data__file
*d
;
987 static const char *defaults
[] = {
991 bool use_default
= true;
998 defaults
[1] = argv
[0];
1000 data__files_cnt
= argc
;
1001 use_default
= false;
1003 } else if (symbol_conf
.default_guest_vmlinux_name
||
1004 symbol_conf
.default_guest_kallsyms
) {
1005 defaults
[0] = "perf.data.host";
1006 defaults
[1] = "perf.data.guest";
1009 if (sort_compute
>= (unsigned int) data__files_cnt
) {
1010 pr_err("Order option out of limit.\n");
1014 data__files
= zalloc(sizeof(*data__files
) * data__files_cnt
);
1018 data__for_each_file(i
, d
) {
1019 struct perf_data_file
*file
= &d
->file
;
1021 file
->path
= use_default
? defaults
[i
] : argv
[i
];
1022 file
->mode
= PERF_DATA_MODE_READ
,
1023 file
->force
= force
,
1031 int cmd_diff(int argc
, const char **argv
, const char *prefix __maybe_unused
)
1033 sort_order
= diff__default_sort_order
;
1034 argc
= parse_options(argc
, argv
, options
, diff_usage
, 0);
1036 if (symbol__init() < 0)
1039 if (data_init(argc
, argv
) < 0)
1044 if (setup_sorting() < 0)
1045 usage_with_options(diff_usage
, options
);
1049 sort__setup_elide(NULL
);
1051 return __cmd_diff();