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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
63static char diff__default_sort_order[] = "dso,symbol";
64static bool force;
Jiri Olsa61949b22012-10-05 16:44:44 +020065static bool show_period;
Jiri Olsaed279da2012-10-05 16:44:45 +020066static bool show_formula;
Jiri Olsaa06d1432012-10-05 16:44:40 +020067static bool show_baseline_only;
Jiri Olsa5f3f8d32012-11-25 23:10:20 +010068static unsigned int sort_compute;
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -020069
Jiri Olsa81d5f952012-10-05 16:44:43 +020070static s64 compute_wdiff_w1;
71static s64 compute_wdiff_w2;
72
Jiri Olsa7aaf6b32012-10-05 16:44:41 +020073enum {
74 COMPUTE_DELTA,
75 COMPUTE_RATIO,
Jiri Olsa81d5f952012-10-05 16:44:43 +020076 COMPUTE_WEIGHTED_DIFF,
Jiri Olsa7aaf6b32012-10-05 16:44:41 +020077 COMPUTE_MAX,
78};
79
80const char *compute_names[COMPUTE_MAX] = {
81 [COMPUTE_DELTA] = "delta",
82 [COMPUTE_RATIO] = "ratio",
Jiri Olsa81d5f952012-10-05 16:44:43 +020083 [COMPUTE_WEIGHTED_DIFF] = "wdiff",
Jiri Olsa7aaf6b32012-10-05 16:44:41 +020084};
85
86static int compute;
87
Jiri Olsa345dc0b2013-02-03 20:08:34 +010088static int compute_2_hpp[COMPUTE_MAX] = {
89 [COMPUTE_DELTA] = PERF_HPP_DIFF__DELTA,
90 [COMPUTE_RATIO] = PERF_HPP_DIFF__RATIO,
91 [COMPUTE_WEIGHTED_DIFF] = PERF_HPP_DIFF__WEIGHTED_DIFF,
92};
93
94#define MAX_COL_WIDTH 70
95
96static struct header_column {
97 const char *name;
98 int width;
99} columns[PERF_HPP_DIFF__MAX_INDEX] = {
100 [PERF_HPP_DIFF__BASELINE] = {
101 .name = "Baseline",
102 },
103 [PERF_HPP_DIFF__PERIOD] = {
104 .name = "Period",
105 .width = 14,
106 },
107 [PERF_HPP_DIFF__PERIOD_BASELINE] = {
108 .name = "Base period",
109 .width = 14,
110 },
111 [PERF_HPP_DIFF__DELTA] = {
112 .name = "Delta",
113 .width = 7,
114 },
115 [PERF_HPP_DIFF__RATIO] = {
116 .name = "Ratio",
117 .width = 14,
118 },
119 [PERF_HPP_DIFF__WEIGHTED_DIFF] = {
120 .name = "Weighted diff",
121 .width = 14,
122 },
123 [PERF_HPP_DIFF__FORMULA] = {
124 .name = "Formula",
125 .width = MAX_COL_WIDTH,
126 }
127};
128
Jiri Olsa81d5f952012-10-05 16:44:43 +0200129static int setup_compute_opt_wdiff(char *opt)
130{
131 char *w1_str = opt;
132 char *w2_str;
133
134 int ret = -EINVAL;
135
136 if (!opt)
137 goto out;
138
139 w2_str = strchr(opt, ',');
140 if (!w2_str)
141 goto out;
142
143 *w2_str++ = 0x0;
144 if (!*w2_str)
145 goto out;
146
147 compute_wdiff_w1 = strtol(w1_str, NULL, 10);
148 compute_wdiff_w2 = strtol(w2_str, NULL, 10);
149
150 if (!compute_wdiff_w1 || !compute_wdiff_w2)
151 goto out;
152
153 pr_debug("compute wdiff w1(%" PRId64 ") w2(%" PRId64 ")\n",
154 compute_wdiff_w1, compute_wdiff_w2);
155
156 ret = 0;
157
158 out:
159 if (ret)
160 pr_err("Failed: wrong weight data, use 'wdiff:w1,w2'\n");
161
162 return ret;
163}
164
165static int setup_compute_opt(char *opt)
166{
167 if (compute == COMPUTE_WEIGHTED_DIFF)
168 return setup_compute_opt_wdiff(opt);
169
170 if (opt) {
171 pr_err("Failed: extra option specified '%s'", opt);
172 return -EINVAL;
173 }
174
175 return 0;
176}
177
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200178static int setup_compute(const struct option *opt, const char *str,
179 int unset __maybe_unused)
180{
181 int *cp = (int *) opt->value;
Jiri Olsa81d5f952012-10-05 16:44:43 +0200182 char *cstr = (char *) str;
183 char buf[50];
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200184 unsigned i;
Jiri Olsa81d5f952012-10-05 16:44:43 +0200185 char *option;
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200186
187 if (!str) {
188 *cp = COMPUTE_DELTA;
189 return 0;
190 }
191
Jiri Olsa81d5f952012-10-05 16:44:43 +0200192 option = strchr(str, ':');
193 if (option) {
194 unsigned len = option++ - str;
195
196 /*
197 * The str data are not writeable, so we need
198 * to use another buffer.
199 */
200
201 /* No option value is longer. */
202 if (len >= sizeof(buf))
203 return -EINVAL;
204
205 strncpy(buf, str, len);
206 buf[len] = 0x0;
207 cstr = buf;
208 }
209
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200210 for (i = 0; i < COMPUTE_MAX; i++)
Jiri Olsa81d5f952012-10-05 16:44:43 +0200211 if (!strcmp(cstr, compute_names[i])) {
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200212 *cp = i;
Jiri Olsa81d5f952012-10-05 16:44:43 +0200213 return setup_compute_opt(option);
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200214 }
215
216 pr_err("Failed: '%s' is not computation method "
Jiri Olsa81d5f952012-10-05 16:44:43 +0200217 "(use 'delta','ratio' or 'wdiff')\n", str);
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200218 return -EINVAL;
219}
220
Jiri Olsaef358e62012-10-21 23:31:51 +0200221static double period_percent(struct hist_entry *he, u64 period)
Jiri Olsa96c47f12012-10-05 16:44:42 +0200222{
223 u64 total = he->hists->stats.total_period;
224 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{
Jiri Olsaed279da2012-10-05 16:44:45 +0200262 return scnprintf(buf, size,
263 "(%" PRIu64 " * 100 / %" PRIu64 ") - "
264 "(%" PRIu64 " * 100 / %" PRIu64 ")",
Jiri Olsa9af303e2012-12-01 21:15:40 +0100265 pair->stat.period, pair->hists->stats.total_period,
266 he->stat.period, he->hists->stats.total_period);
Jiri Olsaed279da2012-10-05 16:44:45 +0200267}
268
Jiri Olsaf4c8bae2012-11-28 14:52:41 +0100269static int formula_ratio(struct hist_entry *he, struct hist_entry *pair,
270 char *buf, size_t size)
Jiri Olsaed279da2012-10-05 16:44:45 +0200271{
Jiri Olsa9af303e2012-12-01 21:15:40 +0100272 double old_period = he->stat.period;
273 double new_period = pair->stat.period;
Jiri Olsaed279da2012-10-05 16:44:45 +0200274
275 return scnprintf(buf, size, "%.0F / %.0F", new_period, old_period);
276}
277
Jiri Olsaf4c8bae2012-11-28 14:52:41 +0100278static int formula_wdiff(struct hist_entry *he, struct hist_entry *pair,
279 char *buf, size_t size)
Jiri Olsaed279da2012-10-05 16:44:45 +0200280{
Jiri Olsa9af303e2012-12-01 21:15:40 +0100281 u64 old_period = he->stat.period;
282 u64 new_period = pair->stat.period;
Jiri Olsaed279da2012-10-05 16:44:45 +0200283
284 return scnprintf(buf, size,
285 "(%" PRIu64 " * " "%" PRId64 ") - (%" PRIu64 " * " "%" PRId64 ")",
286 new_period, compute_wdiff_w2, old_period, compute_wdiff_w1);
287}
288
Jiri Olsaef358e62012-10-21 23:31:51 +0200289static int formula_fprintf(struct hist_entry *he, struct hist_entry *pair,
290 char *buf, size_t size)
Jiri Olsaed279da2012-10-05 16:44:45 +0200291{
292 switch (compute) {
293 case COMPUTE_DELTA:
Jiri Olsaf4c8bae2012-11-28 14:52:41 +0100294 return formula_delta(he, pair, buf, size);
Jiri Olsaed279da2012-10-05 16:44:45 +0200295 case COMPUTE_RATIO:
Jiri Olsaf4c8bae2012-11-28 14:52:41 +0100296 return formula_ratio(he, pair, buf, size);
Jiri Olsaed279da2012-10-05 16:44:45 +0200297 case COMPUTE_WEIGHTED_DIFF:
Jiri Olsaf4c8bae2012-11-28 14:52:41 +0100298 return formula_wdiff(he, pair, buf, size);
Jiri Olsaed279da2012-10-05 16:44:45 +0200299 default:
300 BUG_ON(1);
301 }
302
303 return -1;
304}
305
Arnaldo Carvalho de Meloc824c432013-10-22 19:01:31 -0300306static int hists__add_entry(struct hists *hists,
Andi Kleen05484292013-01-24 16:10:29 +0100307 struct addr_location *al, u64 period,
Andi Kleen475eeab2013-09-20 07:40:43 -0700308 u64 weight, u64 transaction)
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200309{
Namhyung Kim41a4e6e2013-10-31 15:56:03 +0900310 if (__hists__add_entry(hists, al, NULL, NULL, NULL, period, weight,
311 transaction) != NULL)
Arnaldo Carvalho de Melo28e2a102010-05-09 13:02:23 -0300312 return 0;
313 return -ENOMEM;
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200314}
315
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300316static int diff__process_sample_event(struct perf_tool *tool __maybe_unused,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200317 union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200318 struct perf_sample *sample,
Jiri Olsa863e4512012-09-06 17:46:55 +0200319 struct perf_evsel *evsel,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200320 struct machine *machine)
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200321{
322 struct addr_location al;
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200323
Adrian Huntere44baa32013-08-08 14:32:25 +0300324 if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200325 pr_warning("problem processing %d event, skipping it.\n",
326 event->header.type);
327 return -1;
328 }
329
Jiri Olsad88c48f2012-10-05 16:44:46 +0200330 if (al.filtered)
Arnaldo Carvalho de Meloc410a332009-12-15 20:04:41 -0200331 return 0;
332
Andi Kleen475eeab2013-09-20 07:40:43 -0700333 if (hists__add_entry(&evsel->hists, &al, sample->period,
334 sample->weight, sample->transaction)) {
Arnaldo Carvalho de Meloc82ee822010-05-14 14:19:35 -0300335 pr_warning("problem incrementing symbol period, skipping event\n");
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200336 return -1;
337 }
338
Jiri Olsa863e4512012-09-06 17:46:55 +0200339 evsel->hists.stats.total_period += sample->period;
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200340 return 0;
341}
342
Jiri Olsa863e4512012-09-06 17:46:55 +0200343static struct perf_tool tool = {
344 .sample = diff__process_sample_event,
345 .mmap = perf_event__process_mmap,
346 .comm = perf_event__process_comm,
Arnaldo Carvalho de Melof62d3f02012-10-06 15:44:59 -0300347 .exit = perf_event__process_exit,
348 .fork = perf_event__process_fork,
Jiri Olsa863e4512012-09-06 17:46:55 +0200349 .lost = perf_event__process_lost,
350 .ordered_samples = true,
351 .ordering_requires_timestamps = true,
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200352};
353
Jiri Olsa863e4512012-09-06 17:46:55 +0200354static struct perf_evsel *evsel_match(struct perf_evsel *evsel,
355 struct perf_evlist *evlist)
356{
357 struct perf_evsel *e;
358
Arnaldo Carvalho de Melo0050f7a2014-01-10 10:37:27 -0300359 evlist__for_each(evlist, e) {
Jiri Olsa863e4512012-09-06 17:46:55 +0200360 if (perf_evsel__match2(evsel, e))
361 return e;
Arnaldo Carvalho de Melo0050f7a2014-01-10 10:37:27 -0300362 }
Jiri Olsa863e4512012-09-06 17:46:55 +0200363
364 return NULL;
365}
366
Namhyung Kimce74f602012-12-10 17:29:55 +0900367static void perf_evlist__collapse_resort(struct perf_evlist *evlist)
Jiri Olsadd464342012-10-04 21:49:36 +0900368{
369 struct perf_evsel *evsel;
370
Arnaldo Carvalho de Melo0050f7a2014-01-10 10:37:27 -0300371 evlist__for_each(evlist, evsel) {
Jiri Olsadd464342012-10-04 21:49:36 +0900372 struct hists *hists = &evsel->hists;
373
Namhyung Kimc1fb5652013-10-11 14:15:38 +0900374 hists__collapse_resort(hists, NULL);
Jiri Olsadd464342012-10-04 21:49:36 +0900375 }
376}
377
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100378static struct hist_entry*
379get_pair_data(struct hist_entry *he, struct data__file *d)
380{
381 if (hist_entry__has_pairs(he)) {
382 struct hist_entry *pair;
383
384 list_for_each_entry(pair, &he->pairs.head, pairs.node)
385 if (pair->hists == d->hists)
386 return pair;
387 }
388
389 return NULL;
390}
391
392static struct hist_entry*
393get_pair_fmt(struct hist_entry *he, struct diff_hpp_fmt *dfmt)
394{
395 void *ptr = dfmt - dfmt->idx;
396 struct data__file *d = container_of(ptr, struct data__file, fmt);
397
398 return get_pair_data(he, d);
399}
400
Jiri Olsaa06d1432012-10-05 16:44:40 +0200401static void hists__baseline_only(struct hists *hists)
402{
Namhyung Kimce74f602012-12-10 17:29:55 +0900403 struct rb_root *root;
404 struct rb_node *next;
Jiri Olsaa06d1432012-10-05 16:44:40 +0200405
Namhyung Kimce74f602012-12-10 17:29:55 +0900406 if (sort__need_collapse)
407 root = &hists->entries_collapsed;
408 else
409 root = hists->entries_in;
410
411 next = rb_first(root);
Jiri Olsaa06d1432012-10-05 16:44:40 +0200412 while (next != NULL) {
Namhyung Kimce74f602012-12-10 17:29:55 +0900413 struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node_in);
Jiri Olsaa06d1432012-10-05 16:44:40 +0200414
Namhyung Kimce74f602012-12-10 17:29:55 +0900415 next = rb_next(&he->rb_node_in);
Arnaldo Carvalho de Melob821c732012-10-25 14:42:45 -0200416 if (!hist_entry__next_pair(he)) {
Namhyung Kimce74f602012-12-10 17:29:55 +0900417 rb_erase(&he->rb_node_in, root);
Jiri Olsaa06d1432012-10-05 16:44:40 +0200418 hist_entry__free(he);
419 }
420 }
421}
422
Jiri Olsa96c47f12012-10-05 16:44:42 +0200423static void hists__precompute(struct hists *hists)
424{
Jiri Olsa367c53c2012-12-13 14:08:59 +0100425 struct rb_root *root;
426 struct rb_node *next;
Jiri Olsa96c47f12012-10-05 16:44:42 +0200427
Jiri Olsa367c53c2012-12-13 14:08:59 +0100428 if (sort__need_collapse)
429 root = &hists->entries_collapsed;
430 else
431 root = hists->entries_in;
432
433 next = rb_first(root);
Jiri Olsa96c47f12012-10-05 16:44:42 +0200434 while (next != NULL) {
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100435 struct hist_entry *he, *pair;
Jiri Olsa96c47f12012-10-05 16:44:42 +0200436
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100437 he = rb_entry(next, struct hist_entry, rb_node_in);
Jiri Olsa367c53c2012-12-13 14:08:59 +0100438 next = rb_next(&he->rb_node_in);
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100439
440 pair = get_pair_data(he, &data__files[sort_compute]);
Jiri Olsa05472da2012-11-28 14:52:40 +0100441 if (!pair)
442 continue;
Jiri Olsa96c47f12012-10-05 16:44:42 +0200443
444 switch (compute) {
445 case COMPUTE_DELTA:
Jiri Olsaef358e62012-10-21 23:31:51 +0200446 compute_delta(he, pair);
Jiri Olsa96c47f12012-10-05 16:44:42 +0200447 break;
448 case COMPUTE_RATIO:
Jiri Olsaef358e62012-10-21 23:31:51 +0200449 compute_ratio(he, pair);
Jiri Olsa96c47f12012-10-05 16:44:42 +0200450 break;
Jiri Olsa81d5f952012-10-05 16:44:43 +0200451 case COMPUTE_WEIGHTED_DIFF:
Jiri Olsaef358e62012-10-21 23:31:51 +0200452 compute_wdiff(he, pair);
Jiri Olsa81d5f952012-10-05 16:44:43 +0200453 break;
Jiri Olsa96c47f12012-10-05 16:44:42 +0200454 default:
455 BUG_ON(1);
456 }
457 }
458}
459
460static int64_t cmp_doubles(double l, double r)
461{
462 if (l > r)
463 return -1;
464 else if (l < r)
465 return 1;
466 else
467 return 0;
468}
469
470static int64_t
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100471__hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
Jiri Olsa96c47f12012-10-05 16:44:42 +0200472 int c)
473{
474 switch (c) {
475 case COMPUTE_DELTA:
476 {
477 double l = left->diff.period_ratio_delta;
478 double r = right->diff.period_ratio_delta;
479
480 return cmp_doubles(l, r);
481 }
482 case COMPUTE_RATIO:
483 {
484 double l = left->diff.period_ratio;
485 double r = right->diff.period_ratio;
486
487 return cmp_doubles(l, r);
488 }
Jiri Olsa81d5f952012-10-05 16:44:43 +0200489 case COMPUTE_WEIGHTED_DIFF:
490 {
491 s64 l = left->diff.wdiff;
492 s64 r = right->diff.wdiff;
493
494 return r - l;
495 }
Jiri Olsa96c47f12012-10-05 16:44:42 +0200496 default:
497 BUG_ON(1);
498 }
499
500 return 0;
501}
502
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100503static int64_t
504hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right,
505 int c)
506{
507 bool pairs_left = hist_entry__has_pairs(left);
508 bool pairs_right = hist_entry__has_pairs(right);
509 struct hist_entry *p_right, *p_left;
510
511 if (!pairs_left && !pairs_right)
512 return 0;
513
514 if (!pairs_left || !pairs_right)
515 return pairs_left ? -1 : 1;
516
517 p_left = get_pair_data(left, &data__files[sort_compute]);
518 p_right = get_pair_data(right, &data__files[sort_compute]);
519
520 if (!p_left && !p_right)
521 return 0;
522
523 if (!p_left || !p_right)
524 return p_left ? -1 : 1;
525
526 /*
527 * We have 2 entries of same kind, let's
528 * make the data comparison.
529 */
530 return __hist_entry__cmp_compute(p_left, p_right, c);
531}
532
Jiri Olsa96c47f12012-10-05 16:44:42 +0200533static void insert_hist_entry_by_compute(struct rb_root *root,
534 struct hist_entry *he,
535 int c)
536{
537 struct rb_node **p = &root->rb_node;
538 struct rb_node *parent = NULL;
539 struct hist_entry *iter;
540
541 while (*p != NULL) {
542 parent = *p;
543 iter = rb_entry(parent, struct hist_entry, rb_node);
544 if (hist_entry__cmp_compute(he, iter, c) < 0)
545 p = &(*p)->rb_left;
546 else
547 p = &(*p)->rb_right;
548 }
549
550 rb_link_node(&he->rb_node, parent, p);
551 rb_insert_color(&he->rb_node, root);
552}
553
554static void hists__compute_resort(struct hists *hists)
555{
Namhyung Kim66f97ed2012-12-10 17:29:56 +0900556 struct rb_root *root;
557 struct rb_node *next;
558
559 if (sort__need_collapse)
560 root = &hists->entries_collapsed;
561 else
562 root = hists->entries_in;
563
564 hists->entries = RB_ROOT;
565 next = rb_first(root);
566
567 hists->nr_entries = 0;
568 hists->stats.total_period = 0;
569 hists__reset_col_len(hists);
Jiri Olsa96c47f12012-10-05 16:44:42 +0200570
571 while (next != NULL) {
Namhyung Kim66f97ed2012-12-10 17:29:56 +0900572 struct hist_entry *he;
Jiri Olsa96c47f12012-10-05 16:44:42 +0200573
Namhyung Kim66f97ed2012-12-10 17:29:56 +0900574 he = rb_entry(next, struct hist_entry, rb_node_in);
575 next = rb_next(&he->rb_node_in);
Jiri Olsa96c47f12012-10-05 16:44:42 +0200576
Namhyung Kim66f97ed2012-12-10 17:29:56 +0900577 insert_hist_entry_by_compute(&hists->entries, he, compute);
578 hists__inc_nr_entries(hists, he);
Jiri Olsa96c47f12012-10-05 16:44:42 +0200579 }
Jiri Olsa96c47f12012-10-05 16:44:42 +0200580}
581
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100582static void hists__process(struct hists *hists)
Jiri Olsaa06d1432012-10-05 16:44:40 +0200583{
Jiri Olsaa06d1432012-10-05 16:44:40 +0200584 if (show_baseline_only)
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100585 hists__baseline_only(hists);
Jiri Olsaa06d1432012-10-05 16:44:40 +0200586
Jiri Olsa96c47f12012-10-05 16:44:42 +0200587 if (sort_compute) {
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100588 hists__precompute(hists);
589 hists__compute_resort(hists);
Namhyung Kim66f97ed2012-12-10 17:29:56 +0900590 } else {
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100591 hists__output_resort(hists);
Jiri Olsa96c47f12012-10-05 16:44:42 +0200592 }
593
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100594 hists__fprintf(hists, true, 0, 0, 0, stdout);
Jiri Olsaa06d1432012-10-05 16:44:40 +0200595}
596
Jiri Olsa1d81c7f2012-12-01 21:56:03 +0100597static void data__fprintf(void)
598{
599 struct data__file *d;
600 int i;
601
602 fprintf(stdout, "# Data files:\n");
603
604 data__for_each_file(i, d)
605 fprintf(stdout, "# [%d] %s %s\n",
Jiri Olsaf5fc1412013-10-15 16:27:32 +0200606 d->idx, d->file.path,
Jiri Olsa1d81c7f2012-12-01 21:56:03 +0100607 !d->idx ? "(Baseline)" : "");
608
609 fprintf(stdout, "#\n");
610}
611
Jiri Olsaec308422013-03-25 00:02:01 +0100612static void data_process(void)
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200613{
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100614 struct perf_evlist *evlist_base = data__files[0].session->evlist;
615 struct perf_evsel *evsel_base;
Jiri Olsa863e4512012-09-06 17:46:55 +0200616 bool first = true;
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200617
Arnaldo Carvalho de Melo0050f7a2014-01-10 10:37:27 -0300618 evlist__for_each(evlist_base, evsel_base) {
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100619 struct data__file *d;
620 int i;
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200621
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100622 data__for_each_file_new(i, d) {
623 struct perf_evlist *evlist = d->session->evlist;
624 struct perf_evsel *evsel;
625
626 evsel = evsel_match(evsel_base, evlist);
627 if (!evsel)
628 continue;
629
630 d->hists = &evsel->hists;
631
632 hists__match(&evsel_base->hists, &evsel->hists);
633
634 if (!show_baseline_only)
635 hists__link(&evsel_base->hists,
636 &evsel->hists);
637 }
Jiri Olsa863e4512012-09-06 17:46:55 +0200638
639 fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n",
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100640 perf_evsel__name(evsel_base));
Jiri Olsa863e4512012-09-06 17:46:55 +0200641
642 first = false;
643
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100644 if (verbose || data__files_cnt > 2)
Jiri Olsa1d81c7f2012-12-01 21:56:03 +0100645 data__fprintf();
646
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100647 hists__process(&evsel_base->hists);
Jiri Olsaec308422013-03-25 00:02:01 +0100648 }
649}
650
Jiri Olsac818b492012-12-01 21:57:04 +0100651static void data__free(struct data__file *d)
652{
653 int col;
654
655 for (col = 0; col < PERF_HPP_DIFF__MAX_INDEX; col++) {
656 struct diff_hpp_fmt *fmt = &d->fmt[col];
657
Arnaldo Carvalho de Melo74cf2492013-12-27 16:55:14 -0300658 zfree(&fmt->header);
Jiri Olsac818b492012-12-01 21:57:04 +0100659 }
660}
661
Jiri Olsaec308422013-03-25 00:02:01 +0100662static int __cmd_diff(void)
663{
664 struct data__file *d;
665 int ret = -EINVAL, i;
666
667 data__for_each_file(i, d) {
Jiri Olsaf5fc1412013-10-15 16:27:32 +0200668 d->session = perf_session__new(&d->file, false, &tool);
Jiri Olsaec308422013-03-25 00:02:01 +0100669 if (!d->session) {
Jiri Olsaf5fc1412013-10-15 16:27:32 +0200670 pr_err("Failed to open %s\n", d->file.path);
Jiri Olsaec308422013-03-25 00:02:01 +0100671 ret = -ENOMEM;
672 goto out_delete;
673 }
674
675 ret = perf_session__process_events(d->session, &tool);
676 if (ret) {
Jiri Olsaf5fc1412013-10-15 16:27:32 +0200677 pr_err("Failed to process %s\n", d->file.path);
Jiri Olsaec308422013-03-25 00:02:01 +0100678 goto out_delete;
679 }
680
681 perf_evlist__collapse_resort(d->session->evlist);
Jiri Olsa863e4512012-09-06 17:46:55 +0200682 }
683
Jiri Olsaec308422013-03-25 00:02:01 +0100684 data_process();
685
686 out_delete:
687 data__for_each_file(i, d) {
688 if (d->session)
689 perf_session__delete(d->session);
Jiri Olsac818b492012-12-01 21:57:04 +0100690
691 data__free(d);
Jiri Olsaec308422013-03-25 00:02:01 +0100692 }
693
694 free(data__files);
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200695 return ret;
696}
697
Arnaldo Carvalho de Melo0422a4f2009-12-18 16:35:58 -0200698static const char * const diff_usage[] = {
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200699 "perf diff [<options>] [old_file] [new_file]",
Arnaldo Carvalho de Melo0422a4f2009-12-18 16:35:58 -0200700 NULL,
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200701};
702
703static const struct option options[] = {
Ian Munsiec0555642010-04-13 18:37:33 +1000704 OPT_INCR('v', "verbose", &verbose,
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200705 "be more verbose (show symbol address, etc)"),
Jiri Olsaa06d1432012-10-05 16:44:40 +0200706 OPT_BOOLEAN('b', "baseline-only", &show_baseline_only,
707 "Show only items with match in baseline"),
Jiri Olsa81d5f952012-10-05 16:44:43 +0200708 OPT_CALLBACK('c', "compute", &compute,
709 "delta,ratio,wdiff:w1,w2 (default delta)",
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200710 "Entries differential computation selection",
711 setup_compute),
Jiri Olsa61949b22012-10-05 16:44:44 +0200712 OPT_BOOLEAN('p', "period", &show_period,
713 "Show period values."),
Jiri Olsaed279da2012-10-05 16:44:45 +0200714 OPT_BOOLEAN('F', "formula", &show_formula,
715 "Show formula."),
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200716 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
717 "dump raw trace in ASCII"),
718 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
719 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
720 "load module symbols - WARNING: use only with -k and LIVE kernel"),
Arnaldo Carvalho de Meloc410a332009-12-15 20:04:41 -0200721 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
722 "only consider symbols in these dsos"),
723 OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
724 "only consider symbols in these comms"),
725 OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
726 "only consider these symbols"),
Arnaldo Carvalho de Meloc351c282009-12-16 13:49:27 -0200727 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
728 "sort by key(s): pid, comm, dso, symbol, parent"),
729 OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
730 "separator for columns, no spaces will be added between "
731 "columns '.' is reserved."),
David Ahernec5761e2010-12-09 13:27:07 -0700732 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
733 "Look for files with symbols relative to this directory"),
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100734 OPT_UINTEGER('o', "order", &sort_compute, "Specify compute sorting."),
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -0200735 OPT_END()
736};
737
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100738static double baseline_percent(struct hist_entry *he)
Jiri Olsa1d778222012-10-04 21:49:39 +0900739{
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100740 struct hists *hists = he->hists;
741 return 100.0 * he->stat.period / hists->stats.total_period;
742}
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200743
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100744static int hpp__color_baseline(struct perf_hpp_fmt *fmt,
745 struct perf_hpp *hpp, struct hist_entry *he)
746{
747 struct diff_hpp_fmt *dfmt =
748 container_of(fmt, struct diff_hpp_fmt, fmt);
749 double percent = baseline_percent(he);
750 char pfmt[20] = " ";
751
752 if (!he->dummy) {
753 scnprintf(pfmt, 20, "%%%d.2f%%%%", dfmt->header_width - 1);
754 return percent_color_snprintf(hpp->buf, hpp->size,
755 pfmt, percent);
756 } else
757 return scnprintf(hpp->buf, hpp->size, "%*s",
758 dfmt->header_width, pfmt);
759}
760
761static int hpp__entry_baseline(struct hist_entry *he, char *buf, size_t size)
762{
763 double percent = baseline_percent(he);
764 const char *fmt = symbol_conf.field_sep ? "%.2f" : "%6.2f%%";
765 int ret = 0;
766
767 if (!he->dummy)
768 ret = scnprintf(buf, size, fmt, percent);
769
770 return ret;
771}
772
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +0530773static int __hpp__color_compare(struct perf_hpp_fmt *fmt,
774 struct perf_hpp *hpp, struct hist_entry *he,
775 int comparison_method)
776{
777 struct diff_hpp_fmt *dfmt =
778 container_of(fmt, struct diff_hpp_fmt, fmt);
779 struct hist_entry *pair = get_pair_fmt(he, dfmt);
780 double diff;
Ramkumar Ramachandraa5846e22013-12-30 13:32:35 +0530781 s64 wdiff;
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +0530782 char pfmt[20] = " ";
783
784 if (!pair)
785 goto dummy_print;
786
787 switch (comparison_method) {
788 case COMPUTE_DELTA:
789 if (pair->diff.computed)
790 diff = pair->diff.period_ratio_delta;
791 else
792 diff = compute_delta(he, pair);
793
794 if (fabs(diff) < 0.01)
795 goto dummy_print;
796 scnprintf(pfmt, 20, "%%%+d.2f%%%%", dfmt->header_width - 1);
797 return percent_color_snprintf(hpp->buf, hpp->size,
798 pfmt, diff);
Ramkumar Ramachandra1f513b22013-12-30 13:04:20 +0530799 case COMPUTE_RATIO:
800 if (he->dummy)
801 goto dummy_print;
802 if (pair->diff.computed)
803 diff = pair->diff.period_ratio;
804 else
805 diff = compute_ratio(he, pair);
806
807 scnprintf(pfmt, 20, "%%%d.6f", dfmt->header_width);
808 return value_color_snprintf(hpp->buf, hpp->size,
809 pfmt, diff);
Ramkumar Ramachandraa5846e22013-12-30 13:32:35 +0530810 case COMPUTE_WEIGHTED_DIFF:
811 if (he->dummy)
812 goto dummy_print;
813 if (pair->diff.computed)
814 wdiff = pair->diff.wdiff;
815 else
816 wdiff = compute_wdiff(he, pair);
817
818 scnprintf(pfmt, 20, "%%14ld", dfmt->header_width);
819 return color_snprintf(hpp->buf, hpp->size,
820 get_percent_color(wdiff),
821 pfmt, wdiff);
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +0530822 default:
823 BUG_ON(1);
824 }
825dummy_print:
826 return scnprintf(hpp->buf, hpp->size, "%*s",
827 dfmt->header_width, pfmt);
828}
829
830static int hpp__color_delta(struct perf_hpp_fmt *fmt,
831 struct perf_hpp *hpp, struct hist_entry *he)
832{
833 return __hpp__color_compare(fmt, hpp, he, COMPUTE_DELTA);
834}
835
Ramkumar Ramachandra1f513b22013-12-30 13:04:20 +0530836static int hpp__color_ratio(struct perf_hpp_fmt *fmt,
837 struct perf_hpp *hpp, struct hist_entry *he)
838{
839 return __hpp__color_compare(fmt, hpp, he, COMPUTE_RATIO);
840}
841
Ramkumar Ramachandraa5846e22013-12-30 13:32:35 +0530842static int hpp__color_wdiff(struct perf_hpp_fmt *fmt,
843 struct perf_hpp *hpp, struct hist_entry *he)
844{
845 return __hpp__color_compare(fmt, hpp, he, COMPUTE_WEIGHTED_DIFF);
846}
847
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100848static void
849hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size)
850{
851 switch (idx) {
852 case PERF_HPP_DIFF__PERIOD_BASELINE:
853 scnprintf(buf, size, "%" PRIu64, he->stat.period);
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200854 break;
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100855
856 default:
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200857 break;
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100858 }
859}
860
861static void
862hpp__entry_pair(struct hist_entry *he, struct hist_entry *pair,
863 int idx, char *buf, size_t size)
864{
865 double diff;
866 double ratio;
867 s64 wdiff;
868
869 switch (idx) {
870 case PERF_HPP_DIFF__DELTA:
871 if (pair->diff.computed)
872 diff = pair->diff.period_ratio_delta;
873 else
Jiri Olsaef358e62012-10-21 23:31:51 +0200874 diff = compute_delta(he, pair);
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100875
876 if (fabs(diff) >= 0.01)
877 scnprintf(buf, size, "%+4.2F%%", diff);
Jiri Olsa81d5f952012-10-05 16:44:43 +0200878 break;
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100879
880 case PERF_HPP_DIFF__RATIO:
881 /* No point for ratio number if we are dummy.. */
882 if (he->dummy)
883 break;
884
885 if (pair->diff.computed)
886 ratio = pair->diff.period_ratio;
887 else
Jiri Olsaef358e62012-10-21 23:31:51 +0200888 ratio = compute_ratio(he, pair);
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100889
890 if (ratio > 0.0)
891 scnprintf(buf, size, "%14.6F", ratio);
892 break;
893
894 case PERF_HPP_DIFF__WEIGHTED_DIFF:
895 /* No point for wdiff number if we are dummy.. */
896 if (he->dummy)
897 break;
898
899 if (pair->diff.computed)
900 wdiff = pair->diff.wdiff;
901 else
Jiri Olsaef358e62012-10-21 23:31:51 +0200902 wdiff = compute_wdiff(he, pair);
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100903
904 if (wdiff != 0)
905 scnprintf(buf, size, "%14ld", wdiff);
906 break;
907
908 case PERF_HPP_DIFF__FORMULA:
Jiri Olsaef358e62012-10-21 23:31:51 +0200909 formula_fprintf(he, pair, buf, size);
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100910 break;
911
912 case PERF_HPP_DIFF__PERIOD:
913 scnprintf(buf, size, "%" PRIu64, pair->stat.period);
914 break;
915
Jiri Olsa7aaf6b32012-10-05 16:44:41 +0200916 default:
917 BUG_ON(1);
918 };
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100919}
920
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100921static void
922__hpp__entry_global(struct hist_entry *he, struct diff_hpp_fmt *dfmt,
923 char *buf, size_t size)
924{
Jiri Olsa5f3f8d32012-11-25 23:10:20 +0100925 struct hist_entry *pair = get_pair_fmt(he, dfmt);
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100926 int idx = dfmt->idx;
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100927
928 /* baseline is special */
929 if (idx == PERF_HPP_DIFF__BASELINE)
930 hpp__entry_baseline(he, buf, size);
931 else {
932 if (pair)
933 hpp__entry_pair(he, pair, idx, buf, size);
934 else
935 hpp__entry_unpair(he, idx, buf, size);
936 }
937}
938
939static int hpp__entry_global(struct perf_hpp_fmt *_fmt, struct perf_hpp *hpp,
940 struct hist_entry *he)
941{
942 struct diff_hpp_fmt *dfmt =
943 container_of(_fmt, struct diff_hpp_fmt, fmt);
944 char buf[MAX_COL_WIDTH] = " ";
945
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100946 __hpp__entry_global(he, dfmt, buf, MAX_COL_WIDTH);
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100947
948 if (symbol_conf.field_sep)
949 return scnprintf(hpp->buf, hpp->size, "%s", buf);
950 else
951 return scnprintf(hpp->buf, hpp->size, "%*s",
952 dfmt->header_width, buf);
953}
954
955static int hpp__header(struct perf_hpp_fmt *fmt,
956 struct perf_hpp *hpp)
957{
958 struct diff_hpp_fmt *dfmt =
959 container_of(fmt, struct diff_hpp_fmt, fmt);
960
961 BUG_ON(!dfmt->header);
962 return scnprintf(hpp->buf, hpp->size, dfmt->header);
963}
964
965static int hpp__width(struct perf_hpp_fmt *fmt,
966 struct perf_hpp *hpp __maybe_unused)
967{
968 struct diff_hpp_fmt *dfmt =
969 container_of(fmt, struct diff_hpp_fmt, fmt);
970
971 BUG_ON(dfmt->header_width <= 0);
972 return dfmt->header_width;
973}
974
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100975static void init_header(struct data__file *d, struct diff_hpp_fmt *dfmt)
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100976{
977#define MAX_HEADER_NAME 100
978 char buf_indent[MAX_HEADER_NAME];
979 char buf[MAX_HEADER_NAME];
980 const char *header = NULL;
981 int width = 0;
982
983 BUG_ON(dfmt->idx >= PERF_HPP_DIFF__MAX_INDEX);
984 header = columns[dfmt->idx].name;
985 width = columns[dfmt->idx].width;
986
987 /* Only our defined HPP fmts should appear here. */
988 BUG_ON(!header);
989
Jiri Olsa22aeb7f2012-12-01 22:00:00 +0100990 if (data__files_cnt > 2)
991 scnprintf(buf, MAX_HEADER_NAME, "%s/%d", header, d->idx);
992
Jiri Olsa345dc0b2013-02-03 20:08:34 +0100993#define NAME (data__files_cnt > 2 ? buf : header)
994 dfmt->header_width = width;
995 width = (int) strlen(NAME);
996 if (dfmt->header_width < width)
997 dfmt->header_width = width;
998
999 scnprintf(buf_indent, MAX_HEADER_NAME, "%*s",
1000 dfmt->header_width, NAME);
1001
1002 dfmt->header = strdup(buf_indent);
1003#undef MAX_HEADER_NAME
1004#undef NAME
1005}
1006
Jiri Olsac818b492012-12-01 21:57:04 +01001007static void data__hpp_register(struct data__file *d, int idx)
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001008{
Jiri Olsac818b492012-12-01 21:57:04 +01001009 struct diff_hpp_fmt *dfmt = &d->fmt[idx];
1010 struct perf_hpp_fmt *fmt = &dfmt->fmt;
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001011
Jiri Olsac818b492012-12-01 21:57:04 +01001012 dfmt->idx = idx;
1013
1014 fmt->header = hpp__header;
1015 fmt->width = hpp__width;
1016 fmt->entry = hpp__entry_global;
1017
1018 /* TODO more colors */
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +05301019 switch (idx) {
1020 case PERF_HPP_DIFF__BASELINE:
Jiri Olsac818b492012-12-01 21:57:04 +01001021 fmt->color = hpp__color_baseline;
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +05301022 break;
1023 case PERF_HPP_DIFF__DELTA:
1024 fmt->color = hpp__color_delta;
1025 break;
Ramkumar Ramachandra1f513b22013-12-30 13:04:20 +05301026 case PERF_HPP_DIFF__RATIO:
1027 fmt->color = hpp__color_ratio;
1028 break;
Ramkumar Ramachandraa5846e22013-12-30 13:32:35 +05301029 case PERF_HPP_DIFF__WEIGHTED_DIFF:
1030 fmt->color = hpp__color_wdiff;
1031 break;
Ramkumar Ramachandra01f10bc2013-12-30 13:04:19 +05301032 default:
1033 break;
1034 }
Jiri Olsac818b492012-12-01 21:57:04 +01001035
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001036 init_header(d, dfmt);
Jiri Olsac818b492012-12-01 21:57:04 +01001037 perf_hpp__column_register(fmt);
Jiri Olsa345dc0b2013-02-03 20:08:34 +01001038}
1039
1040static void ui_init(void)
1041{
Jiri Olsac818b492012-12-01 21:57:04 +01001042 struct data__file *d;
1043 int i;
Jiri Olsa1d778222012-10-04 21:49:39 +09001044
Jiri Olsac818b492012-12-01 21:57:04 +01001045 data__for_each_file(i, d) {
Jiri Olsaed279da2012-10-05 16:44:45 +02001046
Jiri Olsac818b492012-12-01 21:57:04 +01001047 /*
1048 * Baseline or compute realted columns:
1049 *
1050 * PERF_HPP_DIFF__BASELINE
1051 * PERF_HPP_DIFF__DELTA
1052 * PERF_HPP_DIFF__RATIO
1053 * PERF_HPP_DIFF__WEIGHTED_DIFF
1054 */
1055 data__hpp_register(d, i ? compute_2_hpp[compute] :
1056 PERF_HPP_DIFF__BASELINE);
1057
1058 /*
1059 * And the rest:
1060 *
1061 * PERF_HPP_DIFF__FORMULA
1062 * PERF_HPP_DIFF__PERIOD
1063 * PERF_HPP_DIFF__PERIOD_BASELINE
1064 */
1065 if (show_formula && i)
1066 data__hpp_register(d, PERF_HPP_DIFF__FORMULA);
1067
1068 if (show_period)
1069 data__hpp_register(d, i ? PERF_HPP_DIFF__PERIOD :
1070 PERF_HPP_DIFF__PERIOD_BASELINE);
Jiri Olsa61949b22012-10-05 16:44:44 +02001071 }
Jiri Olsa1d778222012-10-04 21:49:39 +09001072}
1073
Jiri Olsaec308422013-03-25 00:02:01 +01001074static int data_init(int argc, const char **argv)
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -02001075{
Jiri Olsaec308422013-03-25 00:02:01 +01001076 struct data__file *d;
1077 static const char *defaults[] = {
1078 "perf.data.old",
1079 "perf.data",
1080 };
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001081 bool use_default = true;
Jiri Olsaec308422013-03-25 00:02:01 +01001082 int i;
1083
1084 data__files_cnt = 2;
1085
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -02001086 if (argc) {
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001087 if (argc == 1)
Jiri Olsaec308422013-03-25 00:02:01 +01001088 defaults[1] = argv[0];
Jiri Olsa22aeb7f2012-12-01 22:00:00 +01001089 else {
1090 data__files_cnt = argc;
1091 use_default = false;
1092 }
Dongsheng Yangd8d96082013-12-06 17:25:52 -05001093 } else if (perf_guest) {
Jiri Olsaec308422013-03-25 00:02:01 +01001094 defaults[0] = "perf.data.host";
1095 defaults[1] = "perf.data.guest";
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -02001096 }
1097
Jiri Olsa5f3f8d32012-11-25 23:10:20 +01001098 if (sort_compute >= (unsigned int) data__files_cnt) {
1099 pr_err("Order option out of limit.\n");
1100 return -EINVAL;
1101 }
1102
Jiri Olsaec308422013-03-25 00:02:01 +01001103 data__files = zalloc(sizeof(*data__files) * data__files_cnt);
1104 if (!data__files)
1105 return -ENOMEM;
1106
1107 data__for_each_file(i, d) {
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001108 struct perf_data_file *file = &d->file;
1109
1110 file->path = use_default ? defaults[i] : argv[i];
1111 file->mode = PERF_DATA_MODE_READ,
1112 file->force = force,
1113
Jiri Olsaec308422013-03-25 00:02:01 +01001114 d->idx = i;
1115 }
1116
1117 return 0;
1118}
1119
1120int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused)
1121{
1122 sort_order = diff__default_sort_order;
1123 argc = parse_options(argc, argv, options, diff_usage, 0);
1124
Arnaldo Carvalho de Melo655000e2009-12-15 20:04:40 -02001125 if (symbol__init() < 0)
1126 return -1;
1127
Jiri Olsaec308422013-03-25 00:02:01 +01001128 if (data_init(argc, argv) < 0)
1129 return -1;
1130
Jiri Olsa1d778222012-10-04 21:49:39 +09001131 ui_init();
1132
Namhyung Kim55309982013-02-06 14:57:16 +09001133 if (setup_sorting() < 0)
1134 usage_with_options(diff_usage, options);
1135
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -02001136 setup_pager();
Arnaldo Carvalho de Meloc351c282009-12-16 13:49:27 -02001137
Namhyung Kim08e71542013-04-03 21:26:19 +09001138 sort__setup_elide(NULL);
Arnaldo Carvalho de Meloc351c282009-12-16 13:49:27 -02001139
Arnaldo Carvalho de Melo86a9eee2009-12-14 20:09:31 -02001140 return __cmd_diff();
1141}