blob: 9ff0db4e2d0cd1bcc35d2ea137871093ebfcb405 [file] [log] [blame]
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -02001/*
2 * builtin-diff.c
3 *
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.
6 */
7#include "builtin.h"
8
9#include "util/debug.h"
10#include "util/event.h"
11#include "util/hist.h"
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -020012#include "util/evsel.h"
Jiri Olsa863e4512012-09-06 17:46:55 +020013#include "util/evlist.h"
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -020014#include "util/session.h"
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020015#include "util/tool.h"
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -020016#include "util/sort.h"
17#include "util/symbol.h"
18#include "util/util.h"
Jiri Olsaf5fc1412013-10-15 16:27:32 +020019#include "util/data.h"
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -020020
21#include <stdlib.h>
Jiri Olsa345dc0b2013-02-03 20:08:34 +010022#include <math.h>
23
24/* Diff command specific HPP columns. */
25enum {
26 PERF_HPP_DIFF__BASELINE,
27 PERF_HPP_DIFF__PERIOD,
28 PERF_HPP_DIFF__PERIOD_BASELINE,
29 PERF_HPP_DIFF__DELTA,
30 PERF_HPP_DIFF__RATIO,
31 PERF_HPP_DIFF__WEIGHTED_DIFF,
32 PERF_HPP_DIFF__FORMULA,
33
34 PERF_HPP_DIFF__MAX_INDEX
35};
36
37struct diff_hpp_fmt {
38 struct perf_hpp_fmt fmt;
39 int idx;
40 char *header;
41 int header_width;
42};
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -020043
Jiri Olsaec308422013-03-25 00:02:01 +010044struct data__file {
45 struct perf_session *session;
Jiri Olsaf5fc1412013-10-15 16:27:32 +020046 struct perf_data_file file;
Jiri Olsaec308422013-03-25 00:02:01 +010047 int idx;
Jiri Olsa22aeb7f2012-12-01 22:00:00 +010048 struct hists *hists;
Jiri Olsac818b492012-12-01 21:57:04 +010049 struct diff_hpp_fmt fmt[PERF_HPP_DIFF__MAX_INDEX];
Jiri Olsaec308422013-03-25 00:02:01 +010050};
51
52static struct data__file *data__files;
53static int data__files_cnt;
54
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])
59
60#define data__for_each_file(i, d) data__for_each_file_start(i, d, 0)
Jiri Olsa22aeb7f2012-12-01 22:00:00 +010061#define data__for_each_file_new(i, d) data__for_each_file_start(i, d, 1)
Jiri Olsaec308422013-03-25 00:02:01 +010062
Jiri Olsaec308422013-03-25 00:02:01 +010063static bool force;
Jiri Olsa61949b22012-10-05 16:44:44 +020064static bool show_period;
Jiri Olsaed279da2012-10-05 16:44:45 +020065static bool show_formula;
Jiri Olsaa06d1432012-10-05 16:44:40 +020066static bool show_baseline_only;
Jiri Olsa5f3f8d32012-11-25 23:10:20 +010067static unsigned int sort_compute;
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -020068
Jiri Olsa81d5f952012-10-05 16:44:43 +020069static s64 compute_wdiff_w1;
70static s64 compute_wdiff_w2;
71
Jiri Olsa7aaf6b32012-10-05 16:44:41 +020072enum {
73 COMPUTE_DELTA,
74 COMPUTE_RATIO,
Jiri Olsa81d5f952012-10-05 16:44:43 +020075 COMPUTE_WEIGHTED_DIFF,
Jiri Olsa7aaf6b32012-10-05 16:44:41 +020076 COMPUTE_MAX,
77};
78
79const char *compute_names[COMPUTE_MAX] = {
80 [COMPUTE_DELTA] = "delta",
81 [COMPUTE_RATIO] = "ratio",
Jiri Olsa81d5f952012-10-05 16:44:43 +020082 [COMPUTE_WEIGHTED_DIFF] = "wdiff",
Jiri Olsa7aaf6b32012-10-05 16:44:41 +020083};
84
85static int compute;
86
Jiri Olsa345dc0b2013-02-03 20:08:34 +010087static 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,
91};
92
93#define MAX_COL_WIDTH 70
94
95static struct header_column {
96 const char *name;
97 int width;
98} columns[PERF_HPP_DIFF__MAX_INDEX] = {
99 [PERF_HPP_DIFF__BASELINE] = {
100 .name = "Baseline",
101 },
102 [PERF_HPP_DIFF__PERIOD] = {
103 .name = "Period",
104 .width = 14,
105 },
106 [PERF_HPP_DIFF__PERIOD_BASELINE] = {
107 .name = "Base period",
108 .width = 14,
109 },
110 [PERF_HPP_DIFF__DELTA] = {
111 .name = "Delta",
112 .width = 7,
113 },
114 [PERF_HPP_DIFF__RATIO] = {
115 .name = "Ratio",
116 .width = 14,
117 },
118 [PERF_HPP_DIFF__WEIGHTED_DIFF] = {
119 .name = "Weighted diff",
120 .width = 14,
121 },
122 [PERF_HPP_DIFF__FORMULA] = {
123 .name = "Formula",
124 .width = MAX_COL_WIDTH,
125 }
126};
127
Jiri Olsa81d5f952012-10-05 16:44:43 +0200128static int setup_compute_opt_wdiff(char *opt)
129{
130 char *w1_str = opt;
131 char *w2_str;
132
133 int ret = -EINVAL;
134
135 if (!opt)
136 goto out;
137
138 w2_str = strchr(opt, ',');
139 if (!w2_str)
140 goto out;
141
142 *w2_str++ = 0x0;
143 if (!*w2_str)
144 goto out;
145
146 compute_wdiff_w1 = strtol(w1_str, NULL, 10);
147 compute_wdiff_w2 = strtol(w2_str, NULL, 10);
148
149 if (!compute_wdiff_w1 || !compute_wdiff_w2)
150 goto out;
151
152 pr_debug("compute wdiff w1(%" PRId64 ") w2(%" PRId64 ")\n",
153 compute_wdiff_w1, compute_wdiff_w2);
154
155 ret = 0;
156
157 out:
158 if (ret)
159 pr_err("Failed: wrong weight data, use 'wdiff:w1,w2'\n");
160
161 return ret;
162}
163
164static int setup_compute_opt(char *opt)
165{
166 if (compute == COMPUTE_WEIGHTED_DIFF)
167 return setup_compute_opt_wdiff(opt);
168
169 if (opt) {
170 pr_err("Failed: extra option specified '%s'", opt);
171 return -EINVAL;
172 }
173
174 return 0;
175}
176
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200177static int setup_compute(const struct option *opt, const char *str,
178 int unset __maybe_unused)
179{
180 int *cp = (int *) opt->value;
Jiri Olsa81d5f952012-10-05 16:44:43 +0200181 char *cstr = (char *) str;
182 char buf[50];
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200183 unsigned i;
Jiri Olsa81d5f952012-10-05 16:44:43 +0200184 char *option;
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200185
186 if (!str) {
187 *cp = COMPUTE_DELTA;
188 return 0;
189 }
190
Jiri Olsa81d5f952012-10-05 16:44:43 +0200191 option = strchr(str, ':');
192 if (option) {
193 unsigned len = option++ - str;
194
195 /*
196 * The str data are not writeable, so we need
197 * to use another buffer.
198 */
199
200 /* No option value is longer. */
201 if (len >= sizeof(buf))
202 return -EINVAL;
203
204 strncpy(buf, str, len);
205 buf[len] = 0x0;
206 cstr = buf;
207 }
208
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200209 for (i = 0; i < COMPUTE_MAX; i++)
Jiri Olsa81d5f952012-10-05 16:44:43 +0200210 if (!strcmp(cstr, compute_names[i])) {
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200211 *cp = i;
Jiri Olsa81d5f952012-10-05 16:44:43 +0200212 return setup_compute_opt(option);
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200213 }
214
215 pr_err("Failed: '%s' is not computation method "
Jiri Olsa81d5f952012-10-05 16:44:43 +0200216 "(use 'delta','ratio' or 'wdiff')\n", str);
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200217 return -EINVAL;
218}
219
Jiri Olsaef358e62012-10-21 23:31:51 +0200220static double period_percent(struct hist_entry *he, u64 period)
Jiri Olsa96c47f12012-10-05 16:44:42 +0200221{
Namhyung Kim8810f6c2014-02-07 12:06:07 +0900222 u64 total = hists__total_period(he->hists);
223
Jiri Olsa96c47f12012-10-05 16:44:42 +0200224 return (period * 100.0) / total;
225}
226
Jiri Olsaef358e62012-10-21 23:31:51 +0200227static double compute_delta(struct hist_entry *he, struct hist_entry *pair)
Jiri Olsa96c47f12012-10-05 16:44:42 +0200228{
Jiri Olsaef358e62012-10-21 23:31:51 +0200229 double old_percent = period_percent(he, he->stat.period);
230 double new_percent = period_percent(pair, pair->stat.period);
Jiri Olsa96c47f12012-10-05 16:44:42 +0200231
Jiri Olsa9af303e2012-12-01 21:15:40 +0100232 pair->diff.period_ratio_delta = new_percent - old_percent;
233 pair->diff.computed = true;
234 return pair->diff.period_ratio_delta;
Jiri Olsa96c47f12012-10-05 16:44:42 +0200235}
236
Jiri Olsaef358e62012-10-21 23:31:51 +0200237static double compute_ratio(struct hist_entry *he, struct hist_entry *pair)
Jiri Olsa96c47f12012-10-05 16:44:42 +0200238{
Jiri Olsa9af303e2012-12-01 21:15:40 +0100239 double old_period = he->stat.period ?: 1;
240 double new_period = pair->stat.period;
Jiri Olsa96c47f12012-10-05 16:44:42 +0200241
Jiri Olsa9af303e2012-12-01 21:15:40 +0100242 pair->diff.computed = true;
243 pair->diff.period_ratio = new_period / old_period;
244 return pair->diff.period_ratio;
Jiri Olsa96c47f12012-10-05 16:44:42 +0200245}
246
Jiri Olsaef358e62012-10-21 23:31:51 +0200247static s64 compute_wdiff(struct hist_entry *he, struct hist_entry *pair)
Jiri Olsa81d5f952012-10-05 16:44:43 +0200248{
Jiri Olsa9af303e2012-12-01 21:15:40 +0100249 u64 old_period = he->stat.period;
250 u64 new_period = pair->stat.period;
Jiri Olsa81d5f952012-10-05 16:44:43 +0200251
Jiri Olsa9af303e2012-12-01 21:15:40 +0100252 pair->diff.computed = true;
253 pair->diff.wdiff = new_period * compute_wdiff_w2 -
254 old_period * compute_wdiff_w1;
Jiri Olsa81d5f952012-10-05 16:44:43 +0200255
Jiri Olsa9af303e2012-12-01 21:15:40 +0100256 return pair->diff.wdiff;
Jiri Olsa81d5f952012-10-05 16:44:43 +0200257}
258
Jiri Olsaf4c8bae2012-11-28 14:52:41 +0100259static int formula_delta(struct hist_entry *he, struct hist_entry *pair,
260 char *buf, size_t size)
Jiri Olsaed279da2012-10-05 16:44:45 +0200261{
Namhyung Kim8810f6c2014-02-07 12:06:07 +0900262 u64 he_total = he->hists->stats.total_period;
263 u64 pair_total = pair->hists->stats.total_period;
264
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;
268 }
Jiri Olsaed279da2012-10-05 16:44:45 +0200269 return scnprintf(buf, size,
270 "(%" PRIu64 " * 100 / %" PRIu64 ") - "
271 "(%" PRIu64 " * 100 / %" PRIu64 ")",
Namhyung Kim8810f6c2014-02-07 12:06:07 +0900272 pair->stat.period, pair_total,
273 he->stat.period, he_total);
Jiri Olsaed279da2012-10-05 16:44:45 +0200274}
275
Jiri Olsaf4c8bae2012-11-28 14:52:41 +0100276static int formula_ratio(struct hist_entry *he, struct hist_entry *pair,
277 char *buf, size_t size)
Jiri Olsaed279da2012-10-05 16:44:45 +0200278{
Jiri Olsa9af303e2012-12-01 21:15:40 +0100279 double old_period = he->stat.period;
280 double new_period = pair->stat.period;
Jiri Olsaed279da2012-10-05 16:44:45 +0200281
282 return scnprintf(buf, size, "%.0F / %.0F", new_period, old_period);
283}
284
Jiri Olsaf4c8bae2012-11-28 14:52:41 +0100285static int formula_wdiff(struct hist_entry *he, struct hist_entry *pair,
286 char *buf, size_t size)
Jiri Olsaed279da2012-10-05 16:44:45 +0200287{
Jiri Olsa9af303e2012-12-01 21:15:40 +0100288 u64 old_period = he->stat.period;
289 u64 new_period = pair->stat.period;
Jiri Olsaed279da2012-10-05 16:44:45 +0200290
291 return scnprintf(buf, size,
292 "(%" PRIu64 " * " "%" PRId64 ") - (%" PRIu64 " * " "%" PRId64 ")",
293 new_period, compute_wdiff_w2, old_period, compute_wdiff_w1);
294}
295
Jiri Olsaef358e62012-10-21 23:31:51 +0200296static int formula_fprintf(struct hist_entry *he, struct hist_entry *pair,
297 char *buf, size_t size)
Jiri Olsaed279da2012-10-05 16:44:45 +0200298{
299 switch (compute) {
300 case COMPUTE_DELTA:
Jiri Olsaf4c8bae2012-11-28 14:52:41 +0100301 return formula_delta(he, pair, buf, size);
Jiri Olsaed279da2012-10-05 16:44:45 +0200302 case COMPUTE_RATIO:
Jiri Olsaf4c8bae2012-11-28 14:52:41 +0100303 return formula_ratio(he, pair, buf, size);
Jiri Olsaed279da2012-10-05 16:44:45 +0200304 case COMPUTE_WEIGHTED_DIFF:
Jiri Olsaf4c8bae2012-11-28 14:52:41 +0100305 return formula_wdiff(he, pair, buf, size);
Jiri Olsaed279da2012-10-05 16:44:45 +0200306 default:
307 BUG_ON(1);
308 }
309
310 return -1;
311}
312
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300313static int diff__process_sample_event(struct perf_tool *tool __maybe_unused,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200314 union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200315 struct perf_sample *sample,
Jiri Olsa863e4512012-09-06 17:46:55 +0200316 struct perf_evsel *evsel,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200317 struct machine *machine)
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200318{
319 struct addr_location al;
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300320 struct hists *hists = evsel__hists(evsel);
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300321 int ret = -1;
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200322
Arnaldo Carvalho de Melobb3eb562016-03-22 18:39:09 -0300323 if (machine__resolve(machine, &al, sample) < 0) {
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200324 pr_warning("problem processing %d event, skipping it.\n",
325 event->header.type);
326 return -1;
327 }
328
Jiri Olsa0102ef32016-06-14 20:19:21 +0200329 if (!hists__add_entry(hists, &al, NULL, NULL, NULL, sample, true)) {
Arnaldo Carvalho de Meloc82ee822010-05-14 14:19:35 -0300330 pr_warning("problem incrementing symbol period, skipping event\n");
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300331 goto out_put;
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200332 }
333
Namhyung Kim820bc812014-04-22 11:44:21 +0900334 /*
335 * The total_period is updated here before going to the output
336 * tree since normally only the baseline hists will call
337 * hists__output_resort() and precompute needs the total
338 * period in order to sort entries by percentage delta.
339 */
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300340 hists->stats.total_period += sample->period;
Namhyung Kim820bc812014-04-22 11:44:21 +0900341 if (!al.filtered)
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300342 hists->stats.total_non_filtered_period += sample->period;
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300343 ret = 0;
344out_put:
345 addr_location__put(&al);
346 return ret;
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200347}
348
Jiri Olsa863e4512012-09-06 17:46:55 +0200349static struct perf_tool tool = {
350 .sample = diff__process_sample_event,
351 .mmap = perf_event__process_mmap,
Kan Liang68ca9d62014-11-18 11:38:18 -0500352 .mmap2 = perf_event__process_mmap2,
Jiri Olsa863e4512012-09-06 17:46:55 +0200353 .comm = perf_event__process_comm,
Arnaldo Carvalho de Melof62d3f02012-10-06 15:44:59 -0300354 .exit = perf_event__process_exit,
355 .fork = perf_event__process_fork,
Jiri Olsa863e4512012-09-06 17:46:55 +0200356 .lost = perf_event__process_lost,
Jiri Olsa0a8cb852014-07-06 14:18:21 +0200357 .ordered_events = true,
Jiri Olsa863e4512012-09-06 17:46:55 +0200358 .ordering_requires_timestamps = true,
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200359};
360
Jiri Olsa863e4512012-09-06 17:46:55 +0200361static struct perf_evsel *evsel_match(struct perf_evsel *evsel,
362 struct perf_evlist *evlist)
363{
364 struct perf_evsel *e;
365
Arnaldo Carvalho de Meloe5cadb92016-06-23 11:26:15 -0300366 evlist__for_each_entry(evlist, e) {
Jiri Olsa863e4512012-09-06 17:46:55 +0200367 if (perf_evsel__match2(evsel, e))
368 return e;
Arnaldo Carvalho de Melo0050f7a2014-01-10 10:37:27 -0300369 }
Jiri Olsa863e4512012-09-06 17:46:55 +0200370
371 return NULL;
372}
373
Namhyung Kimce74f602012-12-10 17:29:55 +0900374static void perf_evlist__collapse_resort(struct perf_evlist *evlist)
Jiri Olsadd464342012-10-04 21:49:36 +0900375{
376 struct perf_evsel *evsel;
377
Arnaldo Carvalho de Meloe5cadb92016-06-23 11:26:15 -0300378 evlist__for_each_entry(evlist, evsel) {
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300379 struct hists *hists = evsel__hists(evsel);
Jiri Olsadd464342012-10-04 21:49:36 +0900380
Namhyung Kimc1fb5652013-10-11 14:15:38 +0900381 hists__collapse_resort(hists, NULL);
Jiri Olsadd464342012-10-04 21:49:36 +0900382 }
383}
384
Namhyung Kimff21cef2015-01-08 09:45:45 +0900385static struct data__file *fmt_to_data_file(struct perf_hpp_fmt *fmt)
386{
387 struct diff_hpp_fmt *dfmt = container_of(fmt, struct diff_hpp_fmt, fmt);
388 void *ptr = dfmt - dfmt->idx;
389 struct data__file *d = container_of(ptr, struct data__file, fmt);
390
391 return d;
392}
393
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100394static struct hist_entry*
395get_pair_data(struct hist_entry *he, struct data__file *d)
396{
397 if (hist_entry__has_pairs(he)) {
398 struct hist_entry *pair;
399
400 list_for_each_entry(pair, &he->pairs.head, pairs.node)
401 if (pair->hists == d->hists)
402 return pair;
403 }
404
405 return NULL;
406}
407
408static struct hist_entry*
409get_pair_fmt(struct hist_entry *he, struct diff_hpp_fmt *dfmt)
410{
Namhyung Kimff21cef2015-01-08 09:45:45 +0900411 struct data__file *d = fmt_to_data_file(&dfmt->fmt);
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100412
413 return get_pair_data(he, d);
414}
415
Jiri Olsaa06d1432012-10-05 16:44:40 +0200416static void hists__baseline_only(struct hists *hists)
417{
Namhyung Kimce74f602012-12-10 17:29:55 +0900418 struct rb_root *root;
419 struct rb_node *next;
Jiri Olsaa06d1432012-10-05 16:44:40 +0200420
Jiri Olsa52225032016-05-03 13:54:42 +0200421 if (hists__has(hists, need_collapse))
Namhyung Kimce74f602012-12-10 17:29:55 +0900422 root = &hists->entries_collapsed;
423 else
424 root = hists->entries_in;
425
426 next = rb_first(root);
Jiri Olsaa06d1432012-10-05 16:44:40 +0200427 while (next != NULL) {
Namhyung Kimce74f602012-12-10 17:29:55 +0900428 struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node_in);
Jiri Olsaa06d1432012-10-05 16:44:40 +0200429
Namhyung Kimce74f602012-12-10 17:29:55 +0900430 next = rb_next(&he->rb_node_in);
Arnaldo Carvalho de Melob821c732012-10-25 14:42:45 -0200431 if (!hist_entry__next_pair(he)) {
Namhyung Kimce74f602012-12-10 17:29:55 +0900432 rb_erase(&he->rb_node_in, root);
Arnaldo Carvalho de Melo6733d1b2014-12-19 12:31:40 -0300433 hist_entry__delete(he);
Jiri Olsaa06d1432012-10-05 16:44:40 +0200434 }
435 }
436}
437
Jiri Olsa96c47f12012-10-05 16:44:42 +0200438static void hists__precompute(struct hists *hists)
439{
Jiri Olsa367c53c2012-12-13 14:08:59 +0100440 struct rb_root *root;
441 struct rb_node *next;
Jiri Olsa96c47f12012-10-05 16:44:42 +0200442
Jiri Olsa52225032016-05-03 13:54:42 +0200443 if (hists__has(hists, need_collapse))
Jiri Olsa367c53c2012-12-13 14:08:59 +0100444 root = &hists->entries_collapsed;
445 else
446 root = hists->entries_in;
447
448 next = rb_first(root);
Jiri Olsa96c47f12012-10-05 16:44:42 +0200449 while (next != NULL) {
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100450 struct hist_entry *he, *pair;
Namhyung Kim56495a82015-01-08 09:45:47 +0900451 struct data__file *d;
452 int i;
Jiri Olsa96c47f12012-10-05 16:44:42 +0200453
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100454 he = rb_entry(next, struct hist_entry, rb_node_in);
Jiri Olsa367c53c2012-12-13 14:08:59 +0100455 next = rb_next(&he->rb_node_in);
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100456
Namhyung Kim56495a82015-01-08 09:45:47 +0900457 data__for_each_file_new(i, d) {
458 pair = get_pair_data(he, d);
459 if (!pair)
460 continue;
Jiri Olsa96c47f12012-10-05 16:44:42 +0200461
Namhyung Kim56495a82015-01-08 09:45:47 +0900462 switch (compute) {
463 case COMPUTE_DELTA:
464 compute_delta(he, pair);
465 break;
466 case COMPUTE_RATIO:
467 compute_ratio(he, pair);
468 break;
469 case COMPUTE_WEIGHTED_DIFF:
470 compute_wdiff(he, pair);
471 break;
472 default:
473 BUG_ON(1);
474 }
Jiri Olsa96c47f12012-10-05 16:44:42 +0200475 }
476 }
477}
478
479static int64_t cmp_doubles(double l, double r)
480{
481 if (l > r)
482 return -1;
483 else if (l < r)
484 return 1;
485 else
486 return 0;
487}
488
489static int64_t
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100490__hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
Jiri Olsa96c47f12012-10-05 16:44:42 +0200491 int c)
492{
493 switch (c) {
494 case COMPUTE_DELTA:
495 {
496 double l = left->diff.period_ratio_delta;
497 double r = right->diff.period_ratio_delta;
498
499 return cmp_doubles(l, r);
500 }
501 case COMPUTE_RATIO:
502 {
503 double l = left->diff.period_ratio;
504 double r = right->diff.period_ratio;
505
506 return cmp_doubles(l, r);
507 }
Jiri Olsa81d5f952012-10-05 16:44:43 +0200508 case COMPUTE_WEIGHTED_DIFF:
509 {
510 s64 l = left->diff.wdiff;
511 s64 r = right->diff.wdiff;
512
513 return r - l;
514 }
Jiri Olsa96c47f12012-10-05 16:44:42 +0200515 default:
516 BUG_ON(1);
517 }
518
519 return 0;
520}
521
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100522static int64_t
523hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
Namhyung Kim56495a82015-01-08 09:45:47 +0900524 int c, int sort_idx)
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100525{
526 bool pairs_left = hist_entry__has_pairs(left);
527 bool pairs_right = hist_entry__has_pairs(right);
528 struct hist_entry *p_right, *p_left;
529
530 if (!pairs_left && !pairs_right)
531 return 0;
532
533 if (!pairs_left || !pairs_right)
534 return pairs_left ? -1 : 1;
535
Namhyung Kim56495a82015-01-08 09:45:47 +0900536 p_left = get_pair_data(left, &data__files[sort_idx]);
537 p_right = get_pair_data(right, &data__files[sort_idx]);
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100538
539 if (!p_left && !p_right)
540 return 0;
541
542 if (!p_left || !p_right)
543 return p_left ? -1 : 1;
544
545 /*
546 * We have 2 entries of same kind, let's
547 * make the data comparison.
548 */
549 return __hist_entry__cmp_compute(p_left, p_right, c);
550}
551
Namhyung Kime7024fc2014-12-27 14:06:29 +0900552static int64_t
Namhyung Kim566b5cf2015-01-08 09:45:48 +0900553hist_entry__cmp_compute_idx(struct hist_entry *left, struct hist_entry *right,
554 int c, int sort_idx)
555{
556 struct hist_entry *p_right, *p_left;
557
558 p_left = get_pair_data(left, &data__files[sort_idx]);
559 p_right = get_pair_data(right, &data__files[sort_idx]);
560
561 if (!p_left && !p_right)
562 return 0;
563
564 if (!p_left || !p_right)
565 return p_left ? -1 : 1;
566
567 if (c != COMPUTE_DELTA) {
568 /*
569 * The delta can be computed without the baseline, but
570 * others are not. Put those entries which have no
571 * values below.
572 */
573 if (left->dummy && right->dummy)
574 return 0;
575
576 if (left->dummy || right->dummy)
577 return left->dummy ? 1 : -1;
578 }
579
580 return __hist_entry__cmp_compute(p_left, p_right, c);
581}
582
583static int64_t
Namhyung Kim87bbdf72015-01-08 09:45:46 +0900584hist_entry__cmp_nop(struct perf_hpp_fmt *fmt __maybe_unused,
585 struct hist_entry *left __maybe_unused,
Namhyung Kime7024fc2014-12-27 14:06:29 +0900586 struct hist_entry *right __maybe_unused)
587{
588 return 0;
589}
590
591static int64_t
Namhyung Kim87bbdf72015-01-08 09:45:46 +0900592hist_entry__cmp_baseline(struct perf_hpp_fmt *fmt __maybe_unused,
593 struct hist_entry *left, struct hist_entry *right)
Namhyung Kime7024fc2014-12-27 14:06:29 +0900594{
Namhyung Kime7024fc2014-12-27 14:06:29 +0900595 if (left->stat.period == right->stat.period)
596 return 0;
597 return left->stat.period > right->stat.period ? 1 : -1;
598}
599
600static int64_t
Namhyung Kim56495a82015-01-08 09:45:47 +0900601hist_entry__cmp_delta(struct perf_hpp_fmt *fmt,
Namhyung Kim87bbdf72015-01-08 09:45:46 +0900602 struct hist_entry *left, struct hist_entry *right)
Namhyung Kime7024fc2014-12-27 14:06:29 +0900603{
Namhyung Kim56495a82015-01-08 09:45:47 +0900604 struct data__file *d = fmt_to_data_file(fmt);
605
606 return hist_entry__cmp_compute(right, left, COMPUTE_DELTA, d->idx);
Namhyung Kime7024fc2014-12-27 14:06:29 +0900607}
608
609static int64_t
Namhyung Kim56495a82015-01-08 09:45:47 +0900610hist_entry__cmp_ratio(struct perf_hpp_fmt *fmt,
Namhyung Kim87bbdf72015-01-08 09:45:46 +0900611 struct hist_entry *left, struct hist_entry *right)
Namhyung Kime7024fc2014-12-27 14:06:29 +0900612{
Namhyung Kim56495a82015-01-08 09:45:47 +0900613 struct data__file *d = fmt_to_data_file(fmt);
614
615 return hist_entry__cmp_compute(right, left, COMPUTE_RATIO, d->idx);
Namhyung Kime7024fc2014-12-27 14:06:29 +0900616}
617
618static int64_t
Namhyung Kim56495a82015-01-08 09:45:47 +0900619hist_entry__cmp_wdiff(struct perf_hpp_fmt *fmt,
Namhyung Kim87bbdf72015-01-08 09:45:46 +0900620 struct hist_entry *left, struct hist_entry *right)
Namhyung Kime7024fc2014-12-27 14:06:29 +0900621{
Namhyung Kim56495a82015-01-08 09:45:47 +0900622 struct data__file *d = fmt_to_data_file(fmt);
623
624 return hist_entry__cmp_compute(right, left, COMPUTE_WEIGHTED_DIFF, d->idx);
Namhyung Kime7024fc2014-12-27 14:06:29 +0900625}
626
Namhyung Kim566b5cf2015-01-08 09:45:48 +0900627static int64_t
628hist_entry__cmp_delta_idx(struct perf_hpp_fmt *fmt __maybe_unused,
629 struct hist_entry *left, struct hist_entry *right)
630{
631 return hist_entry__cmp_compute_idx(right, left, COMPUTE_DELTA,
632 sort_compute);
633}
634
635static int64_t
636hist_entry__cmp_ratio_idx(struct perf_hpp_fmt *fmt __maybe_unused,
637 struct hist_entry *left, struct hist_entry *right)
638{
639 return hist_entry__cmp_compute_idx(right, left, COMPUTE_RATIO,
640 sort_compute);
641}
642
643static int64_t
644hist_entry__cmp_wdiff_idx(struct perf_hpp_fmt *fmt __maybe_unused,
645 struct hist_entry *left, struct hist_entry *right)
646{
647 return hist_entry__cmp_compute_idx(right, left, COMPUTE_WEIGHTED_DIFF,
648 sort_compute);
649}
650
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100651static void hists__process(struct hists *hists)
Jiri Olsaa06d1432012-10-05 16:44:40 +0200652{
Jiri Olsaa06d1432012-10-05 16:44:40 +0200653 if (show_baseline_only)
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100654 hists__baseline_only(hists);
Jiri Olsaa06d1432012-10-05 16:44:40 +0200655
Namhyung Kim56495a82015-01-08 09:45:47 +0900656 hists__precompute(hists);
Namhyung Kim38259a12014-12-27 14:06:30 +0900657 hists__output_resort(hists, NULL);
Jiri Olsa96c47f12012-10-05 16:44:42 +0200658
Jiri Olsad05e3aa2016-06-14 20:19:18 +0200659 hists__fprintf(hists, true, 0, 0, 0, stdout,
660 symbol_conf.use_callchain);
Jiri Olsaa06d1432012-10-05 16:44:40 +0200661}
662
Jiri Olsa1d81c7f2012-12-01 21:56:03 +0100663static void data__fprintf(void)
664{
665 struct data__file *d;
666 int i;
667
668 fprintf(stdout, "# Data files:\n");
669
670 data__for_each_file(i, d)
671 fprintf(stdout, "# [%d] %s %s\n",
Jiri Olsaf5fc1412013-10-15 16:27:32 +0200672 d->idx, d->file.path,
Jiri Olsa1d81c7f2012-12-01 21:56:03 +0100673 !d->idx ? "(Baseline)" : "");
674
675 fprintf(stdout, "#\n");
676}
677
Jiri Olsaec308422013-03-25 00:02:01 +0100678static void data_process(void)
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200679{
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100680 struct perf_evlist *evlist_base = data__files[0].session->evlist;
681 struct perf_evsel *evsel_base;
Jiri Olsa863e4512012-09-06 17:46:55 +0200682 bool first = true;
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200683
Arnaldo Carvalho de Meloe5cadb92016-06-23 11:26:15 -0300684 evlist__for_each_entry(evlist_base, evsel_base) {
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300685 struct hists *hists_base = evsel__hists(evsel_base);
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100686 struct data__file *d;
687 int i;
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200688
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100689 data__for_each_file_new(i, d) {
690 struct perf_evlist *evlist = d->session->evlist;
691 struct perf_evsel *evsel;
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300692 struct hists *hists;
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100693
694 evsel = evsel_match(evsel_base, evlist);
695 if (!evsel)
696 continue;
697
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300698 hists = evsel__hists(evsel);
699 d->hists = hists;
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100700
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300701 hists__match(hists_base, hists);
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100702
703 if (!show_baseline_only)
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300704 hists__link(hists_base, hists);
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100705 }
Jiri Olsa863e4512012-09-06 17:46:55 +0200706
707 fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100708 perf_evsel__name(evsel_base));
Jiri Olsa863e4512012-09-06 17:46:55 +0200709
710 first = false;
711
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100712 if (verbose || data__files_cnt > 2)
Jiri Olsa1d81c7f2012-12-01 21:56:03 +0100713 data__fprintf();
714
Kan Liangf9db0d02015-08-11 06:30:48 -0400715 /* Don't sort callchain for perf diff */
716 perf_evsel__reset_sample_bit(evsel_base, CALLCHAIN);
717
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300718 hists__process(hists_base);
Jiri Olsaec308422013-03-25 00:02:01 +0100719 }
720}
721
Jiri Olsac818b492012-12-01 21:57:04 +0100722static void data__free(struct data__file *d)
723{
724 int col;
725
726 for (col = 0; col < PERF_HPP_DIFF__MAX_INDEX; col++) {
727 struct diff_hpp_fmt *fmt = &d->fmt[col];
728
Arnaldo Carvalho de Melo74cf2492013-12-27 16:55:14 -0300729 zfree(&fmt->header);
Jiri Olsac818b492012-12-01 21:57:04 +0100730 }
731}
732
Jiri Olsaec308422013-03-25 00:02:01 +0100733static int __cmd_diff(void)
734{
735 struct data__file *d;
736 int ret = -EINVAL, i;
737
738 data__for_each_file(i, d) {
Jiri Olsaf5fc1412013-10-15 16:27:32 +0200739 d->session = perf_session__new(&d->file, false, &tool);
Jiri Olsaec308422013-03-25 00:02:01 +0100740 if (!d->session) {
Jiri Olsaf5fc1412013-10-15 16:27:32 +0200741 pr_err("Failed to open %s\n", d->file.path);
Taeung Song52e028342014-09-24 10:33:37 +0900742 ret = -1;
Jiri Olsaec308422013-03-25 00:02:01 +0100743 goto out_delete;
744 }
745
Arnaldo Carvalho de Melob7b61cb2015-03-03 11:58:45 -0300746 ret = perf_session__process_events(d->session);
Jiri Olsaec308422013-03-25 00:02:01 +0100747 if (ret) {
Jiri Olsaf5fc1412013-10-15 16:27:32 +0200748 pr_err("Failed to process %s\n", d->file.path);
Jiri Olsaec308422013-03-25 00:02:01 +0100749 goto out_delete;
750 }
751
752 perf_evlist__collapse_resort(d->session->evlist);
Jiri Olsa863e4512012-09-06 17:46:55 +0200753 }
754
Jiri Olsaec308422013-03-25 00:02:01 +0100755 data_process();
756
757 out_delete:
758 data__for_each_file(i, d) {
Arnaldo Carvalho de Meloe1446552016-06-22 10:02:16 -0300759 perf_session__delete(d->session);
Jiri Olsac818b492012-12-01 21:57:04 +0100760 data__free(d);
Jiri Olsaec308422013-03-25 00:02:01 +0100761 }
762
763 free(data__files);
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200764 return ret;
765}
766
Arnaldo Carvalho de Melo0422a4f2009-12-18 16:35:58 -0200767static const char * const diff_usage[] = {
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200768 "perf diff [<options>] [old_file] [new_file]",
Arnaldo Carvalho de Melo0422a4f2009-12-18 16:35:58 -0200769 NULL,
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200770};
771
772static const struct option options[] = {
Ian Munsiec0555642010-04-13 18:37:33 +1000773 OPT_INCR('v', "verbose", &verbose,
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200774 "be more verbose (show symbol address, etc)"),
Jiri Olsaa06d1432012-10-05 16:44:40 +0200775 OPT_BOOLEAN('b', "baseline-only", &show_baseline_only,
776 "Show only items with match in baseline"),
Jiri Olsa81d5f952012-10-05 16:44:43 +0200777 OPT_CALLBACK('c', "compute", &compute,
778 "delta,ratio,wdiff:w1,w2 (default delta)",
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200779 "Entries differential computation selection",
780 setup_compute),
Jiri Olsa61949b22012-10-05 16:44:44 +0200781 OPT_BOOLEAN('p', "period", &show_period,
782 "Show period values."),
Jiri Olsaed279da2012-10-05 16:44:45 +0200783 OPT_BOOLEAN('F', "formula", &show_formula,
784 "Show formula."),
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200785 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
786 "dump raw trace in ASCII"),
787 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
David Ahern6b1f3422015-03-24 09:51:57 -0600788 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
789 "file", "kallsyms pathname"),
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200790 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
791 "load module symbols - WARNING: use only with -k and LIVE kernel"),
Arnaldo Carvalho de Meloc410a332009-12-15 20:04:41 -0200792 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
793 "only consider symbols in these dsos"),
794 OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
795 "only consider symbols in these comms"),
796 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
797 "only consider these symbols"),
Arnaldo Carvalho de Meloc351c282009-12-16 13:49:27 -0200798 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
Namhyung Kima2ce0672014-03-04 09:06:42 +0900799 "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
800 " Please refer the man page for the complete list."),
Wang Nan8b8ca6e2015-03-20 02:57:52 +0000801 OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
Arnaldo Carvalho de Meloc351c282009-12-16 13:49:27 -0200802 "separator for columns, no spaces will be added between "
803 "columns '.' is reserved."),
He Kuanga7066702016-05-19 11:47:37 +0000804 OPT_CALLBACK(0, "symfs", NULL, "directory",
805 "Look for files with symbols relative to this directory",
806 symbol__config_symfs),
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100807 OPT_UINTEGER('o', "order", &sort_compute, "Specify compute sorting."),
Namhyung Kim8810f6c2014-02-07 12:06:07 +0900808 OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
809 "How to display percentage of filtered entries", parse_filter_percentage),
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200810 OPT_END()
811};
812
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100813static double baseline_percent(struct hist_entry *he)
Jiri Olsa1d778222012-10-04 21:49:39 +0900814{
Namhyung Kim8810f6c2014-02-07 12:06:07 +0900815 u64 total = hists__total_period(he->hists);
816
817 return 100.0 * he->stat.period / total;
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100818}
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200819
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100820static int hpp__color_baseline(struct perf_hpp_fmt *fmt,
821 struct perf_hpp *hpp, struct hist_entry *he)
822{
823 struct diff_hpp_fmt *dfmt =
824 container_of(fmt, struct diff_hpp_fmt, fmt);
825 double percent = baseline_percent(he);
826 char pfmt[20] = " ";
827
828 if (!he->dummy) {
829 scnprintf(pfmt, 20, "%%%d.2f%%%%", dfmt->header_width - 1);
830 return percent_color_snprintf(hpp->buf, hpp->size,
831 pfmt, percent);
832 } else
833 return scnprintf(hpp->buf, hpp->size, "%*s",
834 dfmt->header_width, pfmt);
835}
836
837static int hpp__entry_baseline(struct hist_entry *he, char *buf, size_t size)
838{
839 double percent = baseline_percent(he);
840 const char *fmt = symbol_conf.field_sep ? "%.2f" : "%6.2f%%";
841 int ret = 0;
842
843 if (!he->dummy)
844 ret = scnprintf(buf, size, fmt, percent);
845
846 return ret;
847}
848
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +0530849static int __hpp__color_compare(struct perf_hpp_fmt *fmt,
850 struct perf_hpp *hpp, struct hist_entry *he,
851 int comparison_method)
852{
853 struct diff_hpp_fmt *dfmt =
854 container_of(fmt, struct diff_hpp_fmt, fmt);
855 struct hist_entry *pair = get_pair_fmt(he, dfmt);
856 double diff;
Ramkumar Ramachandraa5846e22013-12-30 13:32:35 +0530857 s64 wdiff;
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +0530858 char pfmt[20] = " ";
859
860 if (!pair)
Namhyung Kimec3d07c2014-12-27 14:06:31 +0900861 goto no_print;
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +0530862
863 switch (comparison_method) {
864 case COMPUTE_DELTA:
865 if (pair->diff.computed)
866 diff = pair->diff.period_ratio_delta;
867 else
868 diff = compute_delta(he, pair);
869
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +0530870 scnprintf(pfmt, 20, "%%%+d.2f%%%%", dfmt->header_width - 1);
871 return percent_color_snprintf(hpp->buf, hpp->size,
872 pfmt, diff);
Ramkumar Ramachandra1f513b22013-12-30 13:04:20 +0530873 case COMPUTE_RATIO:
874 if (he->dummy)
875 goto dummy_print;
876 if (pair->diff.computed)
877 diff = pair->diff.period_ratio;
878 else
879 diff = compute_ratio(he, pair);
880
881 scnprintf(pfmt, 20, "%%%d.6f", dfmt->header_width);
882 return value_color_snprintf(hpp->buf, hpp->size,
883 pfmt, diff);
Ramkumar Ramachandraa5846e22013-12-30 13:32:35 +0530884 case COMPUTE_WEIGHTED_DIFF:
885 if (he->dummy)
886 goto dummy_print;
887 if (pair->diff.computed)
888 wdiff = pair->diff.wdiff;
889 else
890 wdiff = compute_wdiff(he, pair);
891
892 scnprintf(pfmt, 20, "%%14ld", dfmt->header_width);
893 return color_snprintf(hpp->buf, hpp->size,
894 get_percent_color(wdiff),
895 pfmt, wdiff);
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +0530896 default:
897 BUG_ON(1);
898 }
899dummy_print:
900 return scnprintf(hpp->buf, hpp->size, "%*s",
Namhyung Kimec3d07c2014-12-27 14:06:31 +0900901 dfmt->header_width, "N/A");
902no_print:
903 return scnprintf(hpp->buf, hpp->size, "%*s",
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +0530904 dfmt->header_width, pfmt);
905}
906
907static int hpp__color_delta(struct perf_hpp_fmt *fmt,
908 struct perf_hpp *hpp, struct hist_entry *he)
909{
910 return __hpp__color_compare(fmt, hpp, he, COMPUTE_DELTA);
911}
912
Ramkumar Ramachandra1f513b22013-12-30 13:04:20 +0530913static int hpp__color_ratio(struct perf_hpp_fmt *fmt,
914 struct perf_hpp *hpp, struct hist_entry *he)
915{
916 return __hpp__color_compare(fmt, hpp, he, COMPUTE_RATIO);
917}
918
Ramkumar Ramachandraa5846e22013-12-30 13:32:35 +0530919static int hpp__color_wdiff(struct perf_hpp_fmt *fmt,
920 struct perf_hpp *hpp, struct hist_entry *he)
921{
922 return __hpp__color_compare(fmt, hpp, he, COMPUTE_WEIGHTED_DIFF);
923}
924
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100925static void
926hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size)
927{
928 switch (idx) {
929 case PERF_HPP_DIFF__PERIOD_BASELINE:
930 scnprintf(buf, size, "%" PRIu64, he->stat.period);
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200931 break;
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100932
933 default:
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200934 break;
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100935 }
936}
937
938static void
939hpp__entry_pair(struct hist_entry *he, struct hist_entry *pair,
940 int idx, char *buf, size_t size)
941{
942 double diff;
943 double ratio;
944 s64 wdiff;
945
946 switch (idx) {
947 case PERF_HPP_DIFF__DELTA:
948 if (pair->diff.computed)
949 diff = pair->diff.period_ratio_delta;
950 else
Jiri Olsaef358e62012-10-21 23:31:51 +0200951 diff = compute_delta(he, pair);
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100952
Namhyung Kimec3d07c2014-12-27 14:06:31 +0900953 scnprintf(buf, size, "%+4.2F%%", diff);
Jiri Olsa81d5f952012-10-05 16:44:43 +0200954 break;
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100955
956 case PERF_HPP_DIFF__RATIO:
957 /* No point for ratio number if we are dummy.. */
Namhyung Kimec3d07c2014-12-27 14:06:31 +0900958 if (he->dummy) {
959 scnprintf(buf, size, "N/A");
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100960 break;
Namhyung Kimec3d07c2014-12-27 14:06:31 +0900961 }
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100962
963 if (pair->diff.computed)
964 ratio = pair->diff.period_ratio;
965 else
Jiri Olsaef358e62012-10-21 23:31:51 +0200966 ratio = compute_ratio(he, pair);
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100967
968 if (ratio > 0.0)
969 scnprintf(buf, size, "%14.6F", ratio);
970 break;
971
972 case PERF_HPP_DIFF__WEIGHTED_DIFF:
973 /* No point for wdiff number if we are dummy.. */
Namhyung Kimec3d07c2014-12-27 14:06:31 +0900974 if (he->dummy) {
975 scnprintf(buf, size, "N/A");
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100976 break;
Namhyung Kimec3d07c2014-12-27 14:06:31 +0900977 }
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100978
979 if (pair->diff.computed)
980 wdiff = pair->diff.wdiff;
981 else
Jiri Olsaef358e62012-10-21 23:31:51 +0200982 wdiff = compute_wdiff(he, pair);
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100983
984 if (wdiff != 0)
985 scnprintf(buf, size, "%14ld", wdiff);
986 break;
987
988 case PERF_HPP_DIFF__FORMULA:
Jiri Olsaef358e62012-10-21 23:31:51 +0200989 formula_fprintf(he, pair, buf, size);
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100990 break;
991
992 case PERF_HPP_DIFF__PERIOD:
993 scnprintf(buf, size, "%" PRIu64, pair->stat.period);
994 break;
995
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200996 default:
997 BUG_ON(1);
998 };
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100999}
1000
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001001static void
1002__hpp__entry_global(struct hist_entry *he, struct diff_hpp_fmt *dfmt,
1003 char *buf, size_t size)
1004{
Jiri Olsa5f3f8d32012-11-25 23:10:20 +01001005 struct hist_entry *pair = get_pair_fmt(he, dfmt);
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001006 int idx = dfmt->idx;
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001007
1008 /* baseline is special */
1009 if (idx == PERF_HPP_DIFF__BASELINE)
1010 hpp__entry_baseline(he, buf, size);
1011 else {
1012 if (pair)
1013 hpp__entry_pair(he, pair, idx, buf, size);
1014 else
1015 hpp__entry_unpair(he, idx, buf, size);
1016 }
1017}
1018
1019static int hpp__entry_global(struct perf_hpp_fmt *_fmt, struct perf_hpp *hpp,
1020 struct hist_entry *he)
1021{
1022 struct diff_hpp_fmt *dfmt =
1023 container_of(_fmt, struct diff_hpp_fmt, fmt);
1024 char buf[MAX_COL_WIDTH] = " ";
1025
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001026 __hpp__entry_global(he, dfmt, buf, MAX_COL_WIDTH);
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001027
1028 if (symbol_conf.field_sep)
1029 return scnprintf(hpp->buf, hpp->size, "%s", buf);
1030 else
1031 return scnprintf(hpp->buf, hpp->size, "%*s",
1032 dfmt->header_width, buf);
1033}
1034
Namhyung Kim94a07932014-03-10 16:43:52 +09001035static int hpp__header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
Jiri Olsa74bb43f2016-08-07 17:28:27 +02001036 struct hists *hists __maybe_unused,
Jiri Olsa29659ab2016-08-07 17:28:30 +02001037 int line __maybe_unused,
1038 int *span __maybe_unused)
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001039{
1040 struct diff_hpp_fmt *dfmt =
1041 container_of(fmt, struct diff_hpp_fmt, fmt);
1042
1043 BUG_ON(!dfmt->header);
1044 return scnprintf(hpp->buf, hpp->size, dfmt->header);
1045}
1046
1047static int hpp__width(struct perf_hpp_fmt *fmt,
Namhyung Kim94a07932014-03-10 16:43:52 +09001048 struct perf_hpp *hpp __maybe_unused,
Jiri Olsada1b0402016-06-14 20:19:20 +02001049 struct hists *hists __maybe_unused)
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001050{
1051 struct diff_hpp_fmt *dfmt =
1052 container_of(fmt, struct diff_hpp_fmt, fmt);
1053
1054 BUG_ON(dfmt->header_width <= 0);
1055 return dfmt->header_width;
1056}
1057
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001058static void init_header(struct data__file *d, struct diff_hpp_fmt *dfmt)
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001059{
1060#define MAX_HEADER_NAME 100
1061 char buf_indent[MAX_HEADER_NAME];
1062 char buf[MAX_HEADER_NAME];
1063 const char *header = NULL;
1064 int width = 0;
1065
1066 BUG_ON(dfmt->idx >= PERF_HPP_DIFF__MAX_INDEX);
1067 header = columns[dfmt->idx].name;
1068 width = columns[dfmt->idx].width;
1069
1070 /* Only our defined HPP fmts should appear here. */
1071 BUG_ON(!header);
1072
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001073 if (data__files_cnt > 2)
1074 scnprintf(buf, MAX_HEADER_NAME, "%s/%d", header, d->idx);
1075
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001076#define NAME (data__files_cnt > 2 ? buf : header)
1077 dfmt->header_width = width;
1078 width = (int) strlen(NAME);
1079 if (dfmt->header_width < width)
1080 dfmt->header_width = width;
1081
1082 scnprintf(buf_indent, MAX_HEADER_NAME, "%*s",
1083 dfmt->header_width, NAME);
1084
1085 dfmt->header = strdup(buf_indent);
1086#undef MAX_HEADER_NAME
1087#undef NAME
1088}
1089
Jiri Olsac818b492012-12-01 21:57:04 +01001090static void data__hpp_register(struct data__file *d, int idx)
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001091{
Jiri Olsac818b492012-12-01 21:57:04 +01001092 struct diff_hpp_fmt *dfmt = &d->fmt[idx];
1093 struct perf_hpp_fmt *fmt = &dfmt->fmt;
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001094
Jiri Olsac818b492012-12-01 21:57:04 +01001095 dfmt->idx = idx;
1096
1097 fmt->header = hpp__header;
1098 fmt->width = hpp__width;
1099 fmt->entry = hpp__entry_global;
Namhyung Kime7024fc2014-12-27 14:06:29 +09001100 fmt->cmp = hist_entry__cmp_nop;
1101 fmt->collapse = hist_entry__cmp_nop;
Jiri Olsac818b492012-12-01 21:57:04 +01001102
1103 /* TODO more colors */
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +05301104 switch (idx) {
1105 case PERF_HPP_DIFF__BASELINE:
Jiri Olsac818b492012-12-01 21:57:04 +01001106 fmt->color = hpp__color_baseline;
Namhyung Kime7024fc2014-12-27 14:06:29 +09001107 fmt->sort = hist_entry__cmp_baseline;
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +05301108 break;
1109 case PERF_HPP_DIFF__DELTA:
1110 fmt->color = hpp__color_delta;
Namhyung Kime7024fc2014-12-27 14:06:29 +09001111 fmt->sort = hist_entry__cmp_delta;
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +05301112 break;
Ramkumar Ramachandra1f513b22013-12-30 13:04:20 +05301113 case PERF_HPP_DIFF__RATIO:
1114 fmt->color = hpp__color_ratio;
Namhyung Kime7024fc2014-12-27 14:06:29 +09001115 fmt->sort = hist_entry__cmp_ratio;
Ramkumar Ramachandra1f513b22013-12-30 13:04:20 +05301116 break;
Ramkumar Ramachandraa5846e22013-12-30 13:32:35 +05301117 case PERF_HPP_DIFF__WEIGHTED_DIFF:
1118 fmt->color = hpp__color_wdiff;
Namhyung Kime7024fc2014-12-27 14:06:29 +09001119 fmt->sort = hist_entry__cmp_wdiff;
Ramkumar Ramachandraa5846e22013-12-30 13:32:35 +05301120 break;
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +05301121 default:
Namhyung Kime7024fc2014-12-27 14:06:29 +09001122 fmt->sort = hist_entry__cmp_nop;
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +05301123 break;
1124 }
Jiri Olsac818b492012-12-01 21:57:04 +01001125
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001126 init_header(d, dfmt);
Jiri Olsac818b492012-12-01 21:57:04 +01001127 perf_hpp__column_register(fmt);
Namhyung Kime7024fc2014-12-27 14:06:29 +09001128 perf_hpp__register_sort_field(fmt);
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001129}
1130
Namhyung Kim566b5cf2015-01-08 09:45:48 +09001131static int ui_init(void)
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001132{
Jiri Olsac818b492012-12-01 21:57:04 +01001133 struct data__file *d;
Namhyung Kim566b5cf2015-01-08 09:45:48 +09001134 struct perf_hpp_fmt *fmt;
Jiri Olsac818b492012-12-01 21:57:04 +01001135 int i;
Jiri Olsa1d778222012-10-04 21:49:39 +09001136
Jiri Olsac818b492012-12-01 21:57:04 +01001137 data__for_each_file(i, d) {
Jiri Olsaed279da2012-10-05 16:44:45 +02001138
Jiri Olsac818b492012-12-01 21:57:04 +01001139 /*
1140 * Baseline or compute realted columns:
1141 *
1142 * PERF_HPP_DIFF__BASELINE
1143 * PERF_HPP_DIFF__DELTA
1144 * PERF_HPP_DIFF__RATIO
1145 * PERF_HPP_DIFF__WEIGHTED_DIFF
1146 */
1147 data__hpp_register(d, i ? compute_2_hpp[compute] :
1148 PERF_HPP_DIFF__BASELINE);
1149
1150 /*
1151 * And the rest:
1152 *
1153 * PERF_HPP_DIFF__FORMULA
1154 * PERF_HPP_DIFF__PERIOD
1155 * PERF_HPP_DIFF__PERIOD_BASELINE
1156 */
1157 if (show_formula && i)
1158 data__hpp_register(d, PERF_HPP_DIFF__FORMULA);
1159
1160 if (show_period)
1161 data__hpp_register(d, i ? PERF_HPP_DIFF__PERIOD :
1162 PERF_HPP_DIFF__PERIOD_BASELINE);
Jiri Olsa61949b22012-10-05 16:44:44 +02001163 }
Namhyung Kim566b5cf2015-01-08 09:45:48 +09001164
1165 if (!sort_compute)
1166 return 0;
1167
1168 /*
1169 * Prepend an fmt to sort on columns at 'sort_compute' first.
1170 * This fmt is added only to the sort list but not to the
1171 * output fields list.
1172 *
1173 * Note that this column (data) can be compared twice - one
1174 * for this 'sort_compute' fmt and another for the normal
1175 * diff_hpp_fmt. But it shouldn't a problem as most entries
1176 * will be sorted out by first try or baseline and comparing
1177 * is not a costly operation.
1178 */
1179 fmt = zalloc(sizeof(*fmt));
1180 if (fmt == NULL) {
1181 pr_err("Memory allocation failed\n");
1182 return -1;
1183 }
1184
1185 fmt->cmp = hist_entry__cmp_nop;
1186 fmt->collapse = hist_entry__cmp_nop;
1187
1188 switch (compute) {
1189 case COMPUTE_DELTA:
1190 fmt->sort = hist_entry__cmp_delta_idx;
1191 break;
1192 case COMPUTE_RATIO:
1193 fmt->sort = hist_entry__cmp_ratio_idx;
1194 break;
1195 case COMPUTE_WEIGHTED_DIFF:
1196 fmt->sort = hist_entry__cmp_wdiff_idx;
1197 break;
1198 default:
1199 BUG_ON(1);
1200 }
1201
Jiri Olsa21e6d842016-01-07 10:14:09 +01001202 perf_hpp__register_sort_field(fmt);
Namhyung Kim566b5cf2015-01-08 09:45:48 +09001203 return 0;
Jiri Olsa1d778222012-10-04 21:49:39 +09001204}
1205
Jiri Olsaec308422013-03-25 00:02:01 +01001206static int data_init(int argc, const char **argv)
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -02001207{
Jiri Olsaec308422013-03-25 00:02:01 +01001208 struct data__file *d;
1209 static const char *defaults[] = {
1210 "perf.data.old",
1211 "perf.data",
1212 };
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001213 bool use_default = true;
Jiri Olsaec308422013-03-25 00:02:01 +01001214 int i;
1215
1216 data__files_cnt = 2;
1217
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -02001218 if (argc) {
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001219 if (argc == 1)
Jiri Olsaec308422013-03-25 00:02:01 +01001220 defaults[1] = argv[0];
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001221 else {
1222 data__files_cnt = argc;
1223 use_default = false;
1224 }
Dongsheng Yangd8d96082013-12-06 17:25:52 -05001225 } else if (perf_guest) {
Jiri Olsaec308422013-03-25 00:02:01 +01001226 defaults[0] = "perf.data.host";
1227 defaults[1] = "perf.data.guest";
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -02001228 }
1229
Jiri Olsa5f3f8d32012-11-25 23:10:20 +01001230 if (sort_compute >= (unsigned int) data__files_cnt) {
1231 pr_err("Order option out of limit.\n");
1232 return -EINVAL;
1233 }
1234
Jiri Olsaec308422013-03-25 00:02:01 +01001235 data__files = zalloc(sizeof(*data__files) * data__files_cnt);
1236 if (!data__files)
1237 return -ENOMEM;
1238
1239 data__for_each_file(i, d) {
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001240 struct perf_data_file *file = &d->file;
1241
1242 file->path = use_default ? defaults[i] : argv[i];
1243 file->mode = PERF_DATA_MODE_READ,
1244 file->force = force,
1245
Jiri Olsaec308422013-03-25 00:02:01 +01001246 d->idx = i;
1247 }
1248
1249 return 0;
1250}
1251
1252int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused)
1253{
Kan Liang9ab1f502014-10-22 15:02:41 -04001254 int ret = hists__init();
1255
1256 if (ret < 0)
1257 return ret;
1258
Jiri Olsaec308422013-03-25 00:02:01 +01001259 argc = parse_options(argc, argv, options, diff_usage, 0);
1260
Namhyung Kim0a7e6d12014-08-12 15:40:45 +09001261 if (symbol__init(NULL) < 0)
Arnaldo Carvalho de Melo655000e2009-12-15 20:04:40 -02001262 return -1;
1263
Jiri Olsaec308422013-03-25 00:02:01 +01001264 if (data_init(argc, argv) < 0)
1265 return -1;
1266
Namhyung Kim566b5cf2015-01-08 09:45:48 +09001267 if (ui_init() < 0)
1268 return -1;
Jiri Olsa1d778222012-10-04 21:49:39 +09001269
Namhyung Kim512ae1b2014-03-18 11:31:39 +09001270 sort__mode = SORT_MODE__DIFF;
1271
Namhyung Kim40184c42015-12-23 02:07:01 +09001272 if (setup_sorting(NULL) < 0)
Namhyung Kim55309982013-02-06 14:57:16 +09001273 usage_with_options(diff_usage, options);
1274
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -02001275 setup_pager();
Arnaldo Carvalho de Meloc351c282009-12-16 13:49:27 -02001276
Namhyung Kim08e71542013-04-03 21:26:19 +09001277 sort__setup_elide(NULL);
Arnaldo Carvalho de Meloc351c282009-12-16 13:49:27 -02001278
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -02001279 return __cmd_diff();
1280}