blob: 74aada554b128ff1f8927d6e340bc0686cc5be2c [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
Arnaldo Carvalho de Meloc824c432013-10-22 19:01:31 -0300313static int hists__add_entry(struct hists *hists,
Andi Kleen05484292013-01-24 16:10:29 +0100314 struct addr_location *al, u64 period,
Andi Kleen475eeab2013-09-20 07:40:43 -0700315 u64 weight, u64 transaction)
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200316{
Namhyung Kim41a4e6e2013-10-31 15:56:03 +0900317 if (__hists__add_entry(hists, al, NULL, NULL, NULL, period, weight,
Namhyung Kima0b51af2012-09-11 13:34:27 +0900318 transaction, true) != NULL)
Arnaldo Carvalho de Melo28e2a102010-05-09 13:02:23 -0300319 return 0;
320 return -ENOMEM;
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200321}
322
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300323static int diff__process_sample_event(struct perf_tool *tool __maybe_unused,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200324 union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200325 struct perf_sample *sample,
Jiri Olsa863e4512012-09-06 17:46:55 +0200326 struct perf_evsel *evsel,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200327 struct machine *machine)
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200328{
329 struct addr_location al;
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300330 struct hists *hists = evsel__hists(evsel);
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200331
Adrian Huntere44baa32013-08-08 14:32:25 +0300332 if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200333 pr_warning("problem processing %d event, skipping it.\n",
334 event->header.type);
335 return -1;
336 }
337
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300338 if (hists__add_entry(hists, &al, sample->period,
Andi Kleen475eeab2013-09-20 07:40:43 -0700339 sample->weight, sample->transaction)) {
Arnaldo Carvalho de Meloc82ee822010-05-14 14:19:35 -0300340 pr_warning("problem incrementing symbol period, skipping event\n");
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200341 return -1;
342 }
343
Namhyung Kim820bc812014-04-22 11:44:21 +0900344 /*
345 * The total_period is updated here before going to the output
346 * tree since normally only the baseline hists will call
347 * hists__output_resort() and precompute needs the total
348 * period in order to sort entries by percentage delta.
349 */
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300350 hists->stats.total_period += sample->period;
Namhyung Kim820bc812014-04-22 11:44:21 +0900351 if (!al.filtered)
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300352 hists->stats.total_non_filtered_period += sample->period;
Namhyung Kim820bc812014-04-22 11:44:21 +0900353
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200354 return 0;
355}
356
Jiri Olsa863e4512012-09-06 17:46:55 +0200357static struct perf_tool tool = {
358 .sample = diff__process_sample_event,
359 .mmap = perf_event__process_mmap,
Kan Liang68ca9d62014-11-18 11:38:18 -0500360 .mmap2 = perf_event__process_mmap2,
Jiri Olsa863e4512012-09-06 17:46:55 +0200361 .comm = perf_event__process_comm,
Arnaldo Carvalho de Melof62d3f02012-10-06 15:44:59 -0300362 .exit = perf_event__process_exit,
363 .fork = perf_event__process_fork,
Jiri Olsa863e4512012-09-06 17:46:55 +0200364 .lost = perf_event__process_lost,
Jiri Olsa0a8cb852014-07-06 14:18:21 +0200365 .ordered_events = true,
Jiri Olsa863e4512012-09-06 17:46:55 +0200366 .ordering_requires_timestamps = true,
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200367};
368
Jiri Olsa863e4512012-09-06 17:46:55 +0200369static struct perf_evsel *evsel_match(struct perf_evsel *evsel,
370 struct perf_evlist *evlist)
371{
372 struct perf_evsel *e;
373
Arnaldo Carvalho de Melo0050f7a2014-01-10 10:37:27 -0300374 evlist__for_each(evlist, e) {
Jiri Olsa863e4512012-09-06 17:46:55 +0200375 if (perf_evsel__match2(evsel, e))
376 return e;
Arnaldo Carvalho de Melo0050f7a2014-01-10 10:37:27 -0300377 }
Jiri Olsa863e4512012-09-06 17:46:55 +0200378
379 return NULL;
380}
381
Namhyung Kimce74f602012-12-10 17:29:55 +0900382static void perf_evlist__collapse_resort(struct perf_evlist *evlist)
Jiri Olsadd464342012-10-04 21:49:36 +0900383{
384 struct perf_evsel *evsel;
385
Arnaldo Carvalho de Melo0050f7a2014-01-10 10:37:27 -0300386 evlist__for_each(evlist, evsel) {
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300387 struct hists *hists = evsel__hists(evsel);
Jiri Olsadd464342012-10-04 21:49:36 +0900388
Namhyung Kimc1fb5652013-10-11 14:15:38 +0900389 hists__collapse_resort(hists, NULL);
Jiri Olsadd464342012-10-04 21:49:36 +0900390 }
391}
392
Namhyung Kimff21cef2015-01-08 09:45:45 +0900393static struct data__file *fmt_to_data_file(struct perf_hpp_fmt *fmt)
394{
395 struct diff_hpp_fmt *dfmt = container_of(fmt, struct diff_hpp_fmt, fmt);
396 void *ptr = dfmt - dfmt->idx;
397 struct data__file *d = container_of(ptr, struct data__file, fmt);
398
399 return d;
400}
401
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100402static struct hist_entry*
403get_pair_data(struct hist_entry *he, struct data__file *d)
404{
405 if (hist_entry__has_pairs(he)) {
406 struct hist_entry *pair;
407
408 list_for_each_entry(pair, &he->pairs.head, pairs.node)
409 if (pair->hists == d->hists)
410 return pair;
411 }
412
413 return NULL;
414}
415
416static struct hist_entry*
417get_pair_fmt(struct hist_entry *he, struct diff_hpp_fmt *dfmt)
418{
Namhyung Kimff21cef2015-01-08 09:45:45 +0900419 struct data__file *d = fmt_to_data_file(&dfmt->fmt);
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100420
421 return get_pair_data(he, d);
422}
423
Jiri Olsaa06d1432012-10-05 16:44:40 +0200424static void hists__baseline_only(struct hists *hists)
425{
Namhyung Kimce74f602012-12-10 17:29:55 +0900426 struct rb_root *root;
427 struct rb_node *next;
Jiri Olsaa06d1432012-10-05 16:44:40 +0200428
Namhyung Kimce74f602012-12-10 17:29:55 +0900429 if (sort__need_collapse)
430 root = &hists->entries_collapsed;
431 else
432 root = hists->entries_in;
433
434 next = rb_first(root);
Jiri Olsaa06d1432012-10-05 16:44:40 +0200435 while (next != NULL) {
Namhyung Kimce74f602012-12-10 17:29:55 +0900436 struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node_in);
Jiri Olsaa06d1432012-10-05 16:44:40 +0200437
Namhyung Kimce74f602012-12-10 17:29:55 +0900438 next = rb_next(&he->rb_node_in);
Arnaldo Carvalho de Melob821c732012-10-25 14:42:45 -0200439 if (!hist_entry__next_pair(he)) {
Namhyung Kimce74f602012-12-10 17:29:55 +0900440 rb_erase(&he->rb_node_in, root);
Arnaldo Carvalho de Melo6733d1b2014-12-19 12:31:40 -0300441 hist_entry__delete(he);
Jiri Olsaa06d1432012-10-05 16:44:40 +0200442 }
443 }
444}
445
Jiri Olsa96c47f12012-10-05 16:44:42 +0200446static void hists__precompute(struct hists *hists)
447{
Jiri Olsa367c53c2012-12-13 14:08:59 +0100448 struct rb_root *root;
449 struct rb_node *next;
Jiri Olsa96c47f12012-10-05 16:44:42 +0200450
Jiri Olsa367c53c2012-12-13 14:08:59 +0100451 if (sort__need_collapse)
452 root = &hists->entries_collapsed;
453 else
454 root = hists->entries_in;
455
456 next = rb_first(root);
Jiri Olsa96c47f12012-10-05 16:44:42 +0200457 while (next != NULL) {
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100458 struct hist_entry *he, *pair;
Namhyung Kim56495a82015-01-08 09:45:47 +0900459 struct data__file *d;
460 int i;
Jiri Olsa96c47f12012-10-05 16:44:42 +0200461
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100462 he = rb_entry(next, struct hist_entry, rb_node_in);
Jiri Olsa367c53c2012-12-13 14:08:59 +0100463 next = rb_next(&he->rb_node_in);
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100464
Namhyung Kim56495a82015-01-08 09:45:47 +0900465 data__for_each_file_new(i, d) {
466 pair = get_pair_data(he, d);
467 if (!pair)
468 continue;
Jiri Olsa96c47f12012-10-05 16:44:42 +0200469
Namhyung Kim56495a82015-01-08 09:45:47 +0900470 switch (compute) {
471 case COMPUTE_DELTA:
472 compute_delta(he, pair);
473 break;
474 case COMPUTE_RATIO:
475 compute_ratio(he, pair);
476 break;
477 case COMPUTE_WEIGHTED_DIFF:
478 compute_wdiff(he, pair);
479 break;
480 default:
481 BUG_ON(1);
482 }
Jiri Olsa96c47f12012-10-05 16:44:42 +0200483 }
484 }
485}
486
487static int64_t cmp_doubles(double l, double r)
488{
489 if (l > r)
490 return -1;
491 else if (l < r)
492 return 1;
493 else
494 return 0;
495}
496
497static int64_t
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100498__hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
Jiri Olsa96c47f12012-10-05 16:44:42 +0200499 int c)
500{
501 switch (c) {
502 case COMPUTE_DELTA:
503 {
504 double l = left->diff.period_ratio_delta;
505 double r = right->diff.period_ratio_delta;
506
507 return cmp_doubles(l, r);
508 }
509 case COMPUTE_RATIO:
510 {
511 double l = left->diff.period_ratio;
512 double r = right->diff.period_ratio;
513
514 return cmp_doubles(l, r);
515 }
Jiri Olsa81d5f952012-10-05 16:44:43 +0200516 case COMPUTE_WEIGHTED_DIFF:
517 {
518 s64 l = left->diff.wdiff;
519 s64 r = right->diff.wdiff;
520
521 return r - l;
522 }
Jiri Olsa96c47f12012-10-05 16:44:42 +0200523 default:
524 BUG_ON(1);
525 }
526
527 return 0;
528}
529
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100530static int64_t
531hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
Namhyung Kim56495a82015-01-08 09:45:47 +0900532 int c, int sort_idx)
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100533{
534 bool pairs_left = hist_entry__has_pairs(left);
535 bool pairs_right = hist_entry__has_pairs(right);
536 struct hist_entry *p_right, *p_left;
537
538 if (!pairs_left && !pairs_right)
539 return 0;
540
541 if (!pairs_left || !pairs_right)
542 return pairs_left ? -1 : 1;
543
Namhyung Kim56495a82015-01-08 09:45:47 +0900544 p_left = get_pair_data(left, &data__files[sort_idx]);
545 p_right = get_pair_data(right, &data__files[sort_idx]);
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100546
547 if (!p_left && !p_right)
548 return 0;
549
550 if (!p_left || !p_right)
551 return p_left ? -1 : 1;
552
553 /*
554 * We have 2 entries of same kind, let's
555 * make the data comparison.
556 */
557 return __hist_entry__cmp_compute(p_left, p_right, c);
558}
559
Namhyung Kime7024fc2014-12-27 14:06:29 +0900560static int64_t
Namhyung Kim566b5cf2015-01-08 09:45:48 +0900561hist_entry__cmp_compute_idx(struct hist_entry *left, struct hist_entry *right,
562 int c, int sort_idx)
563{
564 struct hist_entry *p_right, *p_left;
565
566 p_left = get_pair_data(left, &data__files[sort_idx]);
567 p_right = get_pair_data(right, &data__files[sort_idx]);
568
569 if (!p_left && !p_right)
570 return 0;
571
572 if (!p_left || !p_right)
573 return p_left ? -1 : 1;
574
575 if (c != COMPUTE_DELTA) {
576 /*
577 * The delta can be computed without the baseline, but
578 * others are not. Put those entries which have no
579 * values below.
580 */
581 if (left->dummy && right->dummy)
582 return 0;
583
584 if (left->dummy || right->dummy)
585 return left->dummy ? 1 : -1;
586 }
587
588 return __hist_entry__cmp_compute(p_left, p_right, c);
589}
590
591static int64_t
Namhyung Kim87bbdf72015-01-08 09:45:46 +0900592hist_entry__cmp_nop(struct perf_hpp_fmt *fmt __maybe_unused,
593 struct hist_entry *left __maybe_unused,
Namhyung Kime7024fc2014-12-27 14:06:29 +0900594 struct hist_entry *right __maybe_unused)
595{
596 return 0;
597}
598
599static int64_t
Namhyung Kim87bbdf72015-01-08 09:45:46 +0900600hist_entry__cmp_baseline(struct perf_hpp_fmt *fmt __maybe_unused,
601 struct hist_entry *left, struct hist_entry *right)
Namhyung Kime7024fc2014-12-27 14:06:29 +0900602{
Namhyung Kime7024fc2014-12-27 14:06:29 +0900603 if (left->stat.period == right->stat.period)
604 return 0;
605 return left->stat.period > right->stat.period ? 1 : -1;
606}
607
608static int64_t
Namhyung Kim56495a82015-01-08 09:45:47 +0900609hist_entry__cmp_delta(struct perf_hpp_fmt *fmt,
Namhyung Kim87bbdf72015-01-08 09:45:46 +0900610 struct hist_entry *left, struct hist_entry *right)
Namhyung Kime7024fc2014-12-27 14:06:29 +0900611{
Namhyung Kim56495a82015-01-08 09:45:47 +0900612 struct data__file *d = fmt_to_data_file(fmt);
613
614 return hist_entry__cmp_compute(right, left, COMPUTE_DELTA, d->idx);
Namhyung Kime7024fc2014-12-27 14:06:29 +0900615}
616
617static int64_t
Namhyung Kim56495a82015-01-08 09:45:47 +0900618hist_entry__cmp_ratio(struct perf_hpp_fmt *fmt,
Namhyung Kim87bbdf72015-01-08 09:45:46 +0900619 struct hist_entry *left, struct hist_entry *right)
Namhyung Kime7024fc2014-12-27 14:06:29 +0900620{
Namhyung Kim56495a82015-01-08 09:45:47 +0900621 struct data__file *d = fmt_to_data_file(fmt);
622
623 return hist_entry__cmp_compute(right, left, COMPUTE_RATIO, d->idx);
Namhyung Kime7024fc2014-12-27 14:06:29 +0900624}
625
626static int64_t
Namhyung Kim56495a82015-01-08 09:45:47 +0900627hist_entry__cmp_wdiff(struct perf_hpp_fmt *fmt,
Namhyung Kim87bbdf72015-01-08 09:45:46 +0900628 struct hist_entry *left, struct hist_entry *right)
Namhyung Kime7024fc2014-12-27 14:06:29 +0900629{
Namhyung Kim56495a82015-01-08 09:45:47 +0900630 struct data__file *d = fmt_to_data_file(fmt);
631
632 return hist_entry__cmp_compute(right, left, COMPUTE_WEIGHTED_DIFF, d->idx);
Namhyung Kime7024fc2014-12-27 14:06:29 +0900633}
634
Namhyung Kim566b5cf2015-01-08 09:45:48 +0900635static int64_t
636hist_entry__cmp_delta_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_DELTA,
640 sort_compute);
641}
642
643static int64_t
644hist_entry__cmp_ratio_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_RATIO,
648 sort_compute);
649}
650
651static int64_t
652hist_entry__cmp_wdiff_idx(struct perf_hpp_fmt *fmt __maybe_unused,
653 struct hist_entry *left, struct hist_entry *right)
654{
655 return hist_entry__cmp_compute_idx(right, left, COMPUTE_WEIGHTED_DIFF,
656 sort_compute);
657}
658
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100659static void hists__process(struct hists *hists)
Jiri Olsaa06d1432012-10-05 16:44:40 +0200660{
Jiri Olsaa06d1432012-10-05 16:44:40 +0200661 if (show_baseline_only)
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100662 hists__baseline_only(hists);
Jiri Olsaa06d1432012-10-05 16:44:40 +0200663
Namhyung Kim56495a82015-01-08 09:45:47 +0900664 hists__precompute(hists);
Namhyung Kim38259a12014-12-27 14:06:30 +0900665 hists__output_resort(hists, NULL);
Jiri Olsa96c47f12012-10-05 16:44:42 +0200666
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100667 hists__fprintf(hists, true, 0, 0, 0, stdout);
Jiri Olsaa06d1432012-10-05 16:44:40 +0200668}
669
Jiri Olsa1d81c7f2012-12-01 21:56:03 +0100670static void data__fprintf(void)
671{
672 struct data__file *d;
673 int i;
674
675 fprintf(stdout, "# Data files:\n");
676
677 data__for_each_file(i, d)
678 fprintf(stdout, "# [%d] %s %s\n",
Jiri Olsaf5fc1412013-10-15 16:27:32 +0200679 d->idx, d->file.path,
Jiri Olsa1d81c7f2012-12-01 21:56:03 +0100680 !d->idx ? "(Baseline)" : "");
681
682 fprintf(stdout, "#\n");
683}
684
Jiri Olsaec308422013-03-25 00:02:01 +0100685static void data_process(void)
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200686{
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100687 struct perf_evlist *evlist_base = data__files[0].session->evlist;
688 struct perf_evsel *evsel_base;
Jiri Olsa863e4512012-09-06 17:46:55 +0200689 bool first = true;
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200690
Arnaldo Carvalho de Melo0050f7a2014-01-10 10:37:27 -0300691 evlist__for_each(evlist_base, evsel_base) {
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300692 struct hists *hists_base = evsel__hists(evsel_base);
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100693 struct data__file *d;
694 int i;
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200695
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100696 data__for_each_file_new(i, d) {
697 struct perf_evlist *evlist = d->session->evlist;
698 struct perf_evsel *evsel;
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300699 struct hists *hists;
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100700
701 evsel = evsel_match(evsel_base, evlist);
702 if (!evsel)
703 continue;
704
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300705 hists = evsel__hists(evsel);
706 d->hists = hists;
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100707
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300708 hists__match(hists_base, hists);
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100709
710 if (!show_baseline_only)
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300711 hists__link(hists_base, hists);
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100712 }
Jiri Olsa863e4512012-09-06 17:46:55 +0200713
714 fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100715 perf_evsel__name(evsel_base));
Jiri Olsa863e4512012-09-06 17:46:55 +0200716
717 first = false;
718
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100719 if (verbose || data__files_cnt > 2)
Jiri Olsa1d81c7f2012-12-01 21:56:03 +0100720 data__fprintf();
721
Arnaldo Carvalho de Melo4ea062ed2014-10-09 13:13:41 -0300722 hists__process(hists_base);
Jiri Olsaec308422013-03-25 00:02:01 +0100723 }
724}
725
Jiri Olsac818b492012-12-01 21:57:04 +0100726static void data__free(struct data__file *d)
727{
728 int col;
729
730 for (col = 0; col < PERF_HPP_DIFF__MAX_INDEX; col++) {
731 struct diff_hpp_fmt *fmt = &d->fmt[col];
732
Arnaldo Carvalho de Melo74cf2492013-12-27 16:55:14 -0300733 zfree(&fmt->header);
Jiri Olsac818b492012-12-01 21:57:04 +0100734 }
735}
736
Jiri Olsaec308422013-03-25 00:02:01 +0100737static int __cmd_diff(void)
738{
739 struct data__file *d;
740 int ret = -EINVAL, i;
741
742 data__for_each_file(i, d) {
Jiri Olsaf5fc1412013-10-15 16:27:32 +0200743 d->session = perf_session__new(&d->file, false, &tool);
Jiri Olsaec308422013-03-25 00:02:01 +0100744 if (!d->session) {
Jiri Olsaf5fc1412013-10-15 16:27:32 +0200745 pr_err("Failed to open %s\n", d->file.path);
Taeung Song52e028342014-09-24 10:33:37 +0900746 ret = -1;
Jiri Olsaec308422013-03-25 00:02:01 +0100747 goto out_delete;
748 }
749
750 ret = perf_session__process_events(d->session, &tool);
751 if (ret) {
Jiri Olsaf5fc1412013-10-15 16:27:32 +0200752 pr_err("Failed to process %s\n", d->file.path);
Jiri Olsaec308422013-03-25 00:02:01 +0100753 goto out_delete;
754 }
755
756 perf_evlist__collapse_resort(d->session->evlist);
Jiri Olsa863e4512012-09-06 17:46:55 +0200757 }
758
Jiri Olsaec308422013-03-25 00:02:01 +0100759 data_process();
760
761 out_delete:
762 data__for_each_file(i, d) {
763 if (d->session)
764 perf_session__delete(d->session);
Jiri Olsac818b492012-12-01 21:57:04 +0100765
766 data__free(d);
Jiri Olsaec308422013-03-25 00:02:01 +0100767 }
768
769 free(data__files);
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200770 return ret;
771}
772
Arnaldo Carvalho de Melo0422a4f2009-12-18 16:35:58 -0200773static const char * const diff_usage[] = {
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200774 "perf diff [<options>] [old_file] [new_file]",
Arnaldo Carvalho de Melo0422a4f2009-12-18 16:35:58 -0200775 NULL,
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200776};
777
778static const struct option options[] = {
Ian Munsiec0555642010-04-13 18:37:33 +1000779 OPT_INCR('v', "verbose", &verbose,
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200780 "be more verbose (show symbol address, etc)"),
Jiri Olsaa06d1432012-10-05 16:44:40 +0200781 OPT_BOOLEAN('b', "baseline-only", &show_baseline_only,
782 "Show only items with match in baseline"),
Jiri Olsa81d5f952012-10-05 16:44:43 +0200783 OPT_CALLBACK('c', "compute", &compute,
784 "delta,ratio,wdiff:w1,w2 (default delta)",
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200785 "Entries differential computation selection",
786 setup_compute),
Jiri Olsa61949b22012-10-05 16:44:44 +0200787 OPT_BOOLEAN('p', "period", &show_period,
788 "Show period values."),
Jiri Olsaed279da2012-10-05 16:44:45 +0200789 OPT_BOOLEAN('F', "formula", &show_formula,
790 "Show formula."),
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200791 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
792 "dump raw trace in ASCII"),
793 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
794 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
795 "load module symbols - WARNING: use only with -k and LIVE kernel"),
Arnaldo Carvalho de Meloc410a332009-12-15 20:04:41 -0200796 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
797 "only consider symbols in these dsos"),
798 OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
799 "only consider symbols in these comms"),
800 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
801 "only consider these symbols"),
Arnaldo Carvalho de Meloc351c282009-12-16 13:49:27 -0200802 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
Namhyung Kima2ce0672014-03-04 09:06:42 +0900803 "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
804 " Please refer the man page for the complete list."),
Arnaldo Carvalho de Meloc351c282009-12-16 13:49:27 -0200805 OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
806 "separator for columns, no spaces will be added between "
807 "columns '.' is reserved."),
David Ahernec5761e2010-12-09 13:27:07 -0700808 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
809 "Look for files with symbols relative to this directory"),
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100810 OPT_UINTEGER('o', "order", &sort_compute, "Specify compute sorting."),
Namhyung Kim8810f6c2014-02-07 12:06:07 +0900811 OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
812 "How to display percentage of filtered entries", parse_filter_percentage),
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200813 OPT_END()
814};
815
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100816static double baseline_percent(struct hist_entry *he)
Jiri Olsa1d778222012-10-04 21:49:39 +0900817{
Namhyung Kim8810f6c2014-02-07 12:06:07 +0900818 u64 total = hists__total_period(he->hists);
819
820 return 100.0 * he->stat.period / total;
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100821}
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200822
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100823static int hpp__color_baseline(struct perf_hpp_fmt *fmt,
824 struct perf_hpp *hpp, struct hist_entry *he)
825{
826 struct diff_hpp_fmt *dfmt =
827 container_of(fmt, struct diff_hpp_fmt, fmt);
828 double percent = baseline_percent(he);
829 char pfmt[20] = " ";
830
831 if (!he->dummy) {
832 scnprintf(pfmt, 20, "%%%d.2f%%%%", dfmt->header_width - 1);
833 return percent_color_snprintf(hpp->buf, hpp->size,
834 pfmt, percent);
835 } else
836 return scnprintf(hpp->buf, hpp->size, "%*s",
837 dfmt->header_width, pfmt);
838}
839
840static int hpp__entry_baseline(struct hist_entry *he, char *buf, size_t size)
841{
842 double percent = baseline_percent(he);
843 const char *fmt = symbol_conf.field_sep ? "%.2f" : "%6.2f%%";
844 int ret = 0;
845
846 if (!he->dummy)
847 ret = scnprintf(buf, size, fmt, percent);
848
849 return ret;
850}
851
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +0530852static int __hpp__color_compare(struct perf_hpp_fmt *fmt,
853 struct perf_hpp *hpp, struct hist_entry *he,
854 int comparison_method)
855{
856 struct diff_hpp_fmt *dfmt =
857 container_of(fmt, struct diff_hpp_fmt, fmt);
858 struct hist_entry *pair = get_pair_fmt(he, dfmt);
859 double diff;
Ramkumar Ramachandraa5846e22013-12-30 13:32:35 +0530860 s64 wdiff;
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +0530861 char pfmt[20] = " ";
862
863 if (!pair)
Namhyung Kimec3d07c2014-12-27 14:06:31 +0900864 goto no_print;
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +0530865
866 switch (comparison_method) {
867 case COMPUTE_DELTA:
868 if (pair->diff.computed)
869 diff = pair->diff.period_ratio_delta;
870 else
871 diff = compute_delta(he, pair);
872
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +0530873 scnprintf(pfmt, 20, "%%%+d.2f%%%%", dfmt->header_width - 1);
874 return percent_color_snprintf(hpp->buf, hpp->size,
875 pfmt, diff);
Ramkumar Ramachandra1f513b22013-12-30 13:04:20 +0530876 case COMPUTE_RATIO:
877 if (he->dummy)
878 goto dummy_print;
879 if (pair->diff.computed)
880 diff = pair->diff.period_ratio;
881 else
882 diff = compute_ratio(he, pair);
883
884 scnprintf(pfmt, 20, "%%%d.6f", dfmt->header_width);
885 return value_color_snprintf(hpp->buf, hpp->size,
886 pfmt, diff);
Ramkumar Ramachandraa5846e22013-12-30 13:32:35 +0530887 case COMPUTE_WEIGHTED_DIFF:
888 if (he->dummy)
889 goto dummy_print;
890 if (pair->diff.computed)
891 wdiff = pair->diff.wdiff;
892 else
893 wdiff = compute_wdiff(he, pair);
894
895 scnprintf(pfmt, 20, "%%14ld", dfmt->header_width);
896 return color_snprintf(hpp->buf, hpp->size,
897 get_percent_color(wdiff),
898 pfmt, wdiff);
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +0530899 default:
900 BUG_ON(1);
901 }
902dummy_print:
903 return scnprintf(hpp->buf, hpp->size, "%*s",
Namhyung Kimec3d07c2014-12-27 14:06:31 +0900904 dfmt->header_width, "N/A");
905no_print:
906 return scnprintf(hpp->buf, hpp->size, "%*s",
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +0530907 dfmt->header_width, pfmt);
908}
909
910static int hpp__color_delta(struct perf_hpp_fmt *fmt,
911 struct perf_hpp *hpp, struct hist_entry *he)
912{
913 return __hpp__color_compare(fmt, hpp, he, COMPUTE_DELTA);
914}
915
Ramkumar Ramachandra1f513b22013-12-30 13:04:20 +0530916static int hpp__color_ratio(struct perf_hpp_fmt *fmt,
917 struct perf_hpp *hpp, struct hist_entry *he)
918{
919 return __hpp__color_compare(fmt, hpp, he, COMPUTE_RATIO);
920}
921
Ramkumar Ramachandraa5846e22013-12-30 13:32:35 +0530922static int hpp__color_wdiff(struct perf_hpp_fmt *fmt,
923 struct perf_hpp *hpp, struct hist_entry *he)
924{
925 return __hpp__color_compare(fmt, hpp, he, COMPUTE_WEIGHTED_DIFF);
926}
927
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100928static void
929hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size)
930{
931 switch (idx) {
932 case PERF_HPP_DIFF__PERIOD_BASELINE:
933 scnprintf(buf, size, "%" PRIu64, he->stat.period);
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200934 break;
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100935
936 default:
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200937 break;
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100938 }
939}
940
941static void
942hpp__entry_pair(struct hist_entry *he, struct hist_entry *pair,
943 int idx, char *buf, size_t size)
944{
945 double diff;
946 double ratio;
947 s64 wdiff;
948
949 switch (idx) {
950 case PERF_HPP_DIFF__DELTA:
951 if (pair->diff.computed)
952 diff = pair->diff.period_ratio_delta;
953 else
Jiri Olsaef358e62012-10-21 23:31:51 +0200954 diff = compute_delta(he, pair);
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100955
Namhyung Kimec3d07c2014-12-27 14:06:31 +0900956 scnprintf(buf, size, "%+4.2F%%", diff);
Jiri Olsa81d5f952012-10-05 16:44:43 +0200957 break;
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100958
959 case PERF_HPP_DIFF__RATIO:
960 /* No point for ratio number if we are dummy.. */
Namhyung Kimec3d07c2014-12-27 14:06:31 +0900961 if (he->dummy) {
962 scnprintf(buf, size, "N/A");
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100963 break;
Namhyung Kimec3d07c2014-12-27 14:06:31 +0900964 }
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100965
966 if (pair->diff.computed)
967 ratio = pair->diff.period_ratio;
968 else
Jiri Olsaef358e62012-10-21 23:31:51 +0200969 ratio = compute_ratio(he, pair);
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100970
971 if (ratio > 0.0)
972 scnprintf(buf, size, "%14.6F", ratio);
973 break;
974
975 case PERF_HPP_DIFF__WEIGHTED_DIFF:
976 /* No point for wdiff number if we are dummy.. */
Namhyung Kimec3d07c2014-12-27 14:06:31 +0900977 if (he->dummy) {
978 scnprintf(buf, size, "N/A");
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100979 break;
Namhyung Kimec3d07c2014-12-27 14:06:31 +0900980 }
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100981
982 if (pair->diff.computed)
983 wdiff = pair->diff.wdiff;
984 else
Jiri Olsaef358e62012-10-21 23:31:51 +0200985 wdiff = compute_wdiff(he, pair);
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100986
987 if (wdiff != 0)
988 scnprintf(buf, size, "%14ld", wdiff);
989 break;
990
991 case PERF_HPP_DIFF__FORMULA:
Jiri Olsaef358e62012-10-21 23:31:51 +0200992 formula_fprintf(he, pair, buf, size);
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100993 break;
994
995 case PERF_HPP_DIFF__PERIOD:
996 scnprintf(buf, size, "%" PRIu64, pair->stat.period);
997 break;
998
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200999 default:
1000 BUG_ON(1);
1001 };
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001002}
1003
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001004static void
1005__hpp__entry_global(struct hist_entry *he, struct diff_hpp_fmt *dfmt,
1006 char *buf, size_t size)
1007{
Jiri Olsa5f3f8d32012-11-25 23:10:20 +01001008 struct hist_entry *pair = get_pair_fmt(he, dfmt);
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001009 int idx = dfmt->idx;
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001010
1011 /* baseline is special */
1012 if (idx == PERF_HPP_DIFF__BASELINE)
1013 hpp__entry_baseline(he, buf, size);
1014 else {
1015 if (pair)
1016 hpp__entry_pair(he, pair, idx, buf, size);
1017 else
1018 hpp__entry_unpair(he, idx, buf, size);
1019 }
1020}
1021
1022static int hpp__entry_global(struct perf_hpp_fmt *_fmt, struct perf_hpp *hpp,
1023 struct hist_entry *he)
1024{
1025 struct diff_hpp_fmt *dfmt =
1026 container_of(_fmt, struct diff_hpp_fmt, fmt);
1027 char buf[MAX_COL_WIDTH] = " ";
1028
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001029 __hpp__entry_global(he, dfmt, buf, MAX_COL_WIDTH);
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001030
1031 if (symbol_conf.field_sep)
1032 return scnprintf(hpp->buf, hpp->size, "%s", buf);
1033 else
1034 return scnprintf(hpp->buf, hpp->size, "%*s",
1035 dfmt->header_width, buf);
1036}
1037
Namhyung Kim94a07932014-03-10 16:43:52 +09001038static int hpp__header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1039 struct perf_evsel *evsel __maybe_unused)
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001040{
1041 struct diff_hpp_fmt *dfmt =
1042 container_of(fmt, struct diff_hpp_fmt, fmt);
1043
1044 BUG_ON(!dfmt->header);
1045 return scnprintf(hpp->buf, hpp->size, dfmt->header);
1046}
1047
1048static int hpp__width(struct perf_hpp_fmt *fmt,
Namhyung Kim94a07932014-03-10 16:43:52 +09001049 struct perf_hpp *hpp __maybe_unused,
1050 struct perf_evsel *evsel __maybe_unused)
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001051{
1052 struct diff_hpp_fmt *dfmt =
1053 container_of(fmt, struct diff_hpp_fmt, fmt);
1054
1055 BUG_ON(dfmt->header_width <= 0);
1056 return dfmt->header_width;
1057}
1058
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001059static void init_header(struct data__file *d, struct diff_hpp_fmt *dfmt)
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001060{
1061#define MAX_HEADER_NAME 100
1062 char buf_indent[MAX_HEADER_NAME];
1063 char buf[MAX_HEADER_NAME];
1064 const char *header = NULL;
1065 int width = 0;
1066
1067 BUG_ON(dfmt->idx >= PERF_HPP_DIFF__MAX_INDEX);
1068 header = columns[dfmt->idx].name;
1069 width = columns[dfmt->idx].width;
1070
1071 /* Only our defined HPP fmts should appear here. */
1072 BUG_ON(!header);
1073
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001074 if (data__files_cnt > 2)
1075 scnprintf(buf, MAX_HEADER_NAME, "%s/%d", header, d->idx);
1076
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001077#define NAME (data__files_cnt > 2 ? buf : header)
1078 dfmt->header_width = width;
1079 width = (int) strlen(NAME);
1080 if (dfmt->header_width < width)
1081 dfmt->header_width = width;
1082
1083 scnprintf(buf_indent, MAX_HEADER_NAME, "%*s",
1084 dfmt->header_width, NAME);
1085
1086 dfmt->header = strdup(buf_indent);
1087#undef MAX_HEADER_NAME
1088#undef NAME
1089}
1090
Jiri Olsac818b492012-12-01 21:57:04 +01001091static void data__hpp_register(struct data__file *d, int idx)
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001092{
Jiri Olsac818b492012-12-01 21:57:04 +01001093 struct diff_hpp_fmt *dfmt = &d->fmt[idx];
1094 struct perf_hpp_fmt *fmt = &dfmt->fmt;
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001095
Jiri Olsac818b492012-12-01 21:57:04 +01001096 dfmt->idx = idx;
1097
1098 fmt->header = hpp__header;
1099 fmt->width = hpp__width;
1100 fmt->entry = hpp__entry_global;
Namhyung Kime7024fc2014-12-27 14:06:29 +09001101 fmt->cmp = hist_entry__cmp_nop;
1102 fmt->collapse = hist_entry__cmp_nop;
Jiri Olsac818b492012-12-01 21:57:04 +01001103
1104 /* TODO more colors */
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +05301105 switch (idx) {
1106 case PERF_HPP_DIFF__BASELINE:
Jiri Olsac818b492012-12-01 21:57:04 +01001107 fmt->color = hpp__color_baseline;
Namhyung Kime7024fc2014-12-27 14:06:29 +09001108 fmt->sort = hist_entry__cmp_baseline;
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +05301109 break;
1110 case PERF_HPP_DIFF__DELTA:
1111 fmt->color = hpp__color_delta;
Namhyung Kime7024fc2014-12-27 14:06:29 +09001112 fmt->sort = hist_entry__cmp_delta;
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +05301113 break;
Ramkumar Ramachandra1f513b22013-12-30 13:04:20 +05301114 case PERF_HPP_DIFF__RATIO:
1115 fmt->color = hpp__color_ratio;
Namhyung Kime7024fc2014-12-27 14:06:29 +09001116 fmt->sort = hist_entry__cmp_ratio;
Ramkumar Ramachandra1f513b22013-12-30 13:04:20 +05301117 break;
Ramkumar Ramachandraa5846e22013-12-30 13:32:35 +05301118 case PERF_HPP_DIFF__WEIGHTED_DIFF:
1119 fmt->color = hpp__color_wdiff;
Namhyung Kime7024fc2014-12-27 14:06:29 +09001120 fmt->sort = hist_entry__cmp_wdiff;
Ramkumar Ramachandraa5846e22013-12-30 13:32:35 +05301121 break;
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +05301122 default:
Namhyung Kime7024fc2014-12-27 14:06:29 +09001123 fmt->sort = hist_entry__cmp_nop;
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +05301124 break;
1125 }
Jiri Olsac818b492012-12-01 21:57:04 +01001126
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001127 init_header(d, dfmt);
Jiri Olsac818b492012-12-01 21:57:04 +01001128 perf_hpp__column_register(fmt);
Namhyung Kime7024fc2014-12-27 14:06:29 +09001129 perf_hpp__register_sort_field(fmt);
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001130}
1131
Namhyung Kim566b5cf2015-01-08 09:45:48 +09001132static int ui_init(void)
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001133{
Jiri Olsac818b492012-12-01 21:57:04 +01001134 struct data__file *d;
Namhyung Kim566b5cf2015-01-08 09:45:48 +09001135 struct perf_hpp_fmt *fmt;
Jiri Olsac818b492012-12-01 21:57:04 +01001136 int i;
Jiri Olsa1d778222012-10-04 21:49:39 +09001137
Jiri Olsac818b492012-12-01 21:57:04 +01001138 data__for_each_file(i, d) {
Jiri Olsaed279da2012-10-05 16:44:45 +02001139
Jiri Olsac818b492012-12-01 21:57:04 +01001140 /*
1141 * Baseline or compute realted columns:
1142 *
1143 * PERF_HPP_DIFF__BASELINE
1144 * PERF_HPP_DIFF__DELTA
1145 * PERF_HPP_DIFF__RATIO
1146 * PERF_HPP_DIFF__WEIGHTED_DIFF
1147 */
1148 data__hpp_register(d, i ? compute_2_hpp[compute] :
1149 PERF_HPP_DIFF__BASELINE);
1150
1151 /*
1152 * And the rest:
1153 *
1154 * PERF_HPP_DIFF__FORMULA
1155 * PERF_HPP_DIFF__PERIOD
1156 * PERF_HPP_DIFF__PERIOD_BASELINE
1157 */
1158 if (show_formula && i)
1159 data__hpp_register(d, PERF_HPP_DIFF__FORMULA);
1160
1161 if (show_period)
1162 data__hpp_register(d, i ? PERF_HPP_DIFF__PERIOD :
1163 PERF_HPP_DIFF__PERIOD_BASELINE);
Jiri Olsa61949b22012-10-05 16:44:44 +02001164 }
Namhyung Kim566b5cf2015-01-08 09:45:48 +09001165
1166 if (!sort_compute)
1167 return 0;
1168
1169 /*
1170 * Prepend an fmt to sort on columns at 'sort_compute' first.
1171 * This fmt is added only to the sort list but not to the
1172 * output fields list.
1173 *
1174 * Note that this column (data) can be compared twice - one
1175 * for this 'sort_compute' fmt and another for the normal
1176 * diff_hpp_fmt. But it shouldn't a problem as most entries
1177 * will be sorted out by first try or baseline and comparing
1178 * is not a costly operation.
1179 */
1180 fmt = zalloc(sizeof(*fmt));
1181 if (fmt == NULL) {
1182 pr_err("Memory allocation failed\n");
1183 return -1;
1184 }
1185
1186 fmt->cmp = hist_entry__cmp_nop;
1187 fmt->collapse = hist_entry__cmp_nop;
1188
1189 switch (compute) {
1190 case COMPUTE_DELTA:
1191 fmt->sort = hist_entry__cmp_delta_idx;
1192 break;
1193 case COMPUTE_RATIO:
1194 fmt->sort = hist_entry__cmp_ratio_idx;
1195 break;
1196 case COMPUTE_WEIGHTED_DIFF:
1197 fmt->sort = hist_entry__cmp_wdiff_idx;
1198 break;
1199 default:
1200 BUG_ON(1);
1201 }
1202
1203 list_add(&fmt->sort_list, &perf_hpp__sort_list);
1204 return 0;
Jiri Olsa1d778222012-10-04 21:49:39 +09001205}
1206
Jiri Olsaec308422013-03-25 00:02:01 +01001207static int data_init(int argc, const char **argv)
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -02001208{
Jiri Olsaec308422013-03-25 00:02:01 +01001209 struct data__file *d;
1210 static const char *defaults[] = {
1211 "perf.data.old",
1212 "perf.data",
1213 };
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001214 bool use_default = true;
Jiri Olsaec308422013-03-25 00:02:01 +01001215 int i;
1216
1217 data__files_cnt = 2;
1218
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -02001219 if (argc) {
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001220 if (argc == 1)
Jiri Olsaec308422013-03-25 00:02:01 +01001221 defaults[1] = argv[0];
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001222 else {
1223 data__files_cnt = argc;
1224 use_default = false;
1225 }
Dongsheng Yangd8d96082013-12-06 17:25:52 -05001226 } else if (perf_guest) {
Jiri Olsaec308422013-03-25 00:02:01 +01001227 defaults[0] = "perf.data.host";
1228 defaults[1] = "perf.data.guest";
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -02001229 }
1230
Jiri Olsa5f3f8d32012-11-25 23:10:20 +01001231 if (sort_compute >= (unsigned int) data__files_cnt) {
1232 pr_err("Order option out of limit.\n");
1233 return -EINVAL;
1234 }
1235
Jiri Olsaec308422013-03-25 00:02:01 +01001236 data__files = zalloc(sizeof(*data__files) * data__files_cnt);
1237 if (!data__files)
1238 return -ENOMEM;
1239
1240 data__for_each_file(i, d) {
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001241 struct perf_data_file *file = &d->file;
1242
1243 file->path = use_default ? defaults[i] : argv[i];
1244 file->mode = PERF_DATA_MODE_READ,
1245 file->force = force,
1246
Jiri Olsaec308422013-03-25 00:02:01 +01001247 d->idx = i;
1248 }
1249
1250 return 0;
1251}
1252
1253int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused)
1254{
Kan Liang9ab1f502014-10-22 15:02:41 -04001255 int ret = hists__init();
1256
1257 if (ret < 0)
1258 return ret;
1259
Namhyung Kim0b93da12014-01-14 12:02:15 +09001260 perf_config(perf_default_config, NULL);
1261
Jiri Olsaec308422013-03-25 00:02:01 +01001262 argc = parse_options(argc, argv, options, diff_usage, 0);
1263
Namhyung Kim0a7e6d12014-08-12 15:40:45 +09001264 if (symbol__init(NULL) < 0)
Arnaldo Carvalho de Melo655000e2009-12-15 20:04:40 -02001265 return -1;
1266
Jiri Olsaec308422013-03-25 00:02:01 +01001267 if (data_init(argc, argv) < 0)
1268 return -1;
1269
Namhyung Kim566b5cf2015-01-08 09:45:48 +09001270 if (ui_init() < 0)
1271 return -1;
Jiri Olsa1d778222012-10-04 21:49:39 +09001272
Namhyung Kim512ae1b2014-03-18 11:31:39 +09001273 sort__mode = SORT_MODE__DIFF;
1274
Namhyung Kim55309982013-02-06 14:57:16 +09001275 if (setup_sorting() < 0)
1276 usage_with_options(diff_usage, options);
1277
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -02001278 setup_pager();
Arnaldo Carvalho de Meloc351c282009-12-16 13:49:27 -02001279
Namhyung Kim08e71542013-04-03 21:26:19 +09001280 sort__setup_elide(NULL);
Arnaldo Carvalho de Meloc351c282009-12-16 13:49:27 -02001281
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -02001282 return __cmd_diff();
1283}