Commit | Line | Data |
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86a9eee0 ACM |
1 | /* |
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" | |
743eb868 | 12 | #include "util/evsel.h" |
863e451f | 13 | #include "util/evlist.h" |
86a9eee0 | 14 | #include "util/session.h" |
45694aa7 | 15 | #include "util/tool.h" |
86a9eee0 ACM |
16 | #include "util/sort.h" |
17 | #include "util/symbol.h" | |
18 | #include "util/util.h" | |
19 | ||
20 | #include <stdlib.h> | |
345dc0b4 JO |
21 | #include <math.h> |
22 | ||
23 | /* Diff command specific HPP columns. */ | |
24 | enum { | |
25 | PERF_HPP_DIFF__BASELINE, | |
26 | PERF_HPP_DIFF__PERIOD, | |
27 | PERF_HPP_DIFF__PERIOD_BASELINE, | |
28 | PERF_HPP_DIFF__DELTA, | |
29 | PERF_HPP_DIFF__RATIO, | |
30 | PERF_HPP_DIFF__WEIGHTED_DIFF, | |
31 | PERF_HPP_DIFF__FORMULA, | |
32 | ||
33 | PERF_HPP_DIFF__MAX_INDEX | |
34 | }; | |
35 | ||
36 | struct diff_hpp_fmt { | |
37 | struct perf_hpp_fmt fmt; | |
38 | int idx; | |
39 | char *header; | |
40 | int header_width; | |
41 | }; | |
86a9eee0 | 42 | |
ec308426 JO |
43 | struct data__file { |
44 | struct perf_session *session; | |
45 | const char *file; | |
46 | int idx; | |
22aeb7f5 | 47 | struct hists *hists; |
c818b498 | 48 | struct diff_hpp_fmt fmt[PERF_HPP_DIFF__MAX_INDEX]; |
ec308426 JO |
49 | }; |
50 | ||
51 | static struct data__file *data__files; | |
52 | static int data__files_cnt; | |
53 | ||
54 | #define data__for_each_file_start(i, d, s) \ | |
55 | for (i = s, d = &data__files[s]; \ | |
56 | i < data__files_cnt; \ | |
57 | i++, d = &data__files[i]) | |
58 | ||
59 | #define data__for_each_file(i, d) data__for_each_file_start(i, d, 0) | |
22aeb7f5 | 60 | #define data__for_each_file_new(i, d) data__for_each_file_start(i, d, 1) |
ec308426 JO |
61 | |
62 | static char diff__default_sort_order[] = "dso,symbol"; | |
63 | static bool force; | |
61949b21 | 64 | static bool show_period; |
ed279da2 | 65 | static bool show_formula; |
a06d143e | 66 | static bool show_baseline_only; |
96c47f19 | 67 | static bool sort_compute; |
86a9eee0 | 68 | |
81d5f958 JO |
69 | static s64 compute_wdiff_w1; |
70 | static s64 compute_wdiff_w2; | |
71 | ||
7aaf6b35 JO |
72 | enum { |
73 | COMPUTE_DELTA, | |
74 | COMPUTE_RATIO, | |
81d5f958 | 75 | COMPUTE_WEIGHTED_DIFF, |
7aaf6b35 JO |
76 | COMPUTE_MAX, |
77 | }; | |
78 | ||
79 | const char *compute_names[COMPUTE_MAX] = { | |
80 | [COMPUTE_DELTA] = "delta", | |
81 | [COMPUTE_RATIO] = "ratio", | |
81d5f958 | 82 | [COMPUTE_WEIGHTED_DIFF] = "wdiff", |
7aaf6b35 JO |
83 | }; |
84 | ||
85 | static int compute; | |
86 | ||
345dc0b4 JO |
87 | static 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 | ||
95 | static 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 | ||
81d5f958 JO |
128 | static 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 | ||
164 | static 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 | ||
7aaf6b35 JO |
177 | static int setup_compute(const struct option *opt, const char *str, |
178 | int unset __maybe_unused) | |
179 | { | |
180 | int *cp = (int *) opt->value; | |
81d5f958 JO |
181 | char *cstr = (char *) str; |
182 | char buf[50]; | |
7aaf6b35 | 183 | unsigned i; |
81d5f958 | 184 | char *option; |
7aaf6b35 JO |
185 | |
186 | if (!str) { | |
187 | *cp = COMPUTE_DELTA; | |
188 | return 0; | |
189 | } | |
190 | ||
96c47f19 JO |
191 | if (*str == '+') { |
192 | sort_compute = true; | |
81d5f958 | 193 | cstr = (char *) ++str; |
96c47f19 JO |
194 | if (!*str) |
195 | return 0; | |
196 | } | |
197 | ||
81d5f958 JO |
198 | option = strchr(str, ':'); |
199 | if (option) { | |
200 | unsigned len = option++ - str; | |
201 | ||
202 | /* | |
203 | * The str data are not writeable, so we need | |
204 | * to use another buffer. | |
205 | */ | |
206 | ||
207 | /* No option value is longer. */ | |
208 | if (len >= sizeof(buf)) | |
209 | return -EINVAL; | |
210 | ||
211 | strncpy(buf, str, len); | |
212 | buf[len] = 0x0; | |
213 | cstr = buf; | |
214 | } | |
215 | ||
7aaf6b35 | 216 | for (i = 0; i < COMPUTE_MAX; i++) |
81d5f958 | 217 | if (!strcmp(cstr, compute_names[i])) { |
7aaf6b35 | 218 | *cp = i; |
81d5f958 | 219 | return setup_compute_opt(option); |
7aaf6b35 JO |
220 | } |
221 | ||
222 | pr_err("Failed: '%s' is not computation method " | |
81d5f958 | 223 | "(use 'delta','ratio' or 'wdiff')\n", str); |
7aaf6b35 JO |
224 | return -EINVAL; |
225 | } | |
226 | ||
ef358e6d | 227 | static double period_percent(struct hist_entry *he, u64 period) |
96c47f19 JO |
228 | { |
229 | u64 total = he->hists->stats.total_period; | |
230 | return (period * 100.0) / total; | |
231 | } | |
232 | ||
ef358e6d | 233 | static double compute_delta(struct hist_entry *he, struct hist_entry *pair) |
96c47f19 | 234 | { |
ef358e6d JO |
235 | double old_percent = period_percent(he, he->stat.period); |
236 | double new_percent = period_percent(pair, pair->stat.period); | |
96c47f19 | 237 | |
9af303e2 JO |
238 | pair->diff.period_ratio_delta = new_percent - old_percent; |
239 | pair->diff.computed = true; | |
240 | return pair->diff.period_ratio_delta; | |
96c47f19 JO |
241 | } |
242 | ||
ef358e6d | 243 | static double compute_ratio(struct hist_entry *he, struct hist_entry *pair) |
96c47f19 | 244 | { |
9af303e2 JO |
245 | double old_period = he->stat.period ?: 1; |
246 | double new_period = pair->stat.period; | |
96c47f19 | 247 | |
9af303e2 JO |
248 | pair->diff.computed = true; |
249 | pair->diff.period_ratio = new_period / old_period; | |
250 | return pair->diff.period_ratio; | |
96c47f19 JO |
251 | } |
252 | ||
ef358e6d | 253 | static s64 compute_wdiff(struct hist_entry *he, struct hist_entry *pair) |
81d5f958 | 254 | { |
9af303e2 JO |
255 | u64 old_period = he->stat.period; |
256 | u64 new_period = pair->stat.period; | |
81d5f958 | 257 | |
9af303e2 JO |
258 | pair->diff.computed = true; |
259 | pair->diff.wdiff = new_period * compute_wdiff_w2 - | |
260 | old_period * compute_wdiff_w1; | |
81d5f958 | 261 | |
9af303e2 | 262 | return pair->diff.wdiff; |
81d5f958 JO |
263 | } |
264 | ||
f4c8bae1 JO |
265 | static int formula_delta(struct hist_entry *he, struct hist_entry *pair, |
266 | char *buf, size_t size) | |
ed279da2 | 267 | { |
ed279da2 JO |
268 | return scnprintf(buf, size, |
269 | "(%" PRIu64 " * 100 / %" PRIu64 ") - " | |
270 | "(%" PRIu64 " * 100 / %" PRIu64 ")", | |
9af303e2 JO |
271 | pair->stat.period, pair->hists->stats.total_period, |
272 | he->stat.period, he->hists->stats.total_period); | |
ed279da2 JO |
273 | } |
274 | ||
f4c8bae1 JO |
275 | static int formula_ratio(struct hist_entry *he, struct hist_entry *pair, |
276 | char *buf, size_t size) | |
ed279da2 | 277 | { |
9af303e2 JO |
278 | double old_period = he->stat.period; |
279 | double new_period = pair->stat.period; | |
ed279da2 JO |
280 | |
281 | return scnprintf(buf, size, "%.0F / %.0F", new_period, old_period); | |
282 | } | |
283 | ||
f4c8bae1 JO |
284 | static int formula_wdiff(struct hist_entry *he, struct hist_entry *pair, |
285 | char *buf, size_t size) | |
ed279da2 | 286 | { |
9af303e2 JO |
287 | u64 old_period = he->stat.period; |
288 | u64 new_period = pair->stat.period; | |
ed279da2 JO |
289 | |
290 | return scnprintf(buf, size, | |
291 | "(%" PRIu64 " * " "%" PRId64 ") - (%" PRIu64 " * " "%" PRId64 ")", | |
292 | new_period, compute_wdiff_w2, old_period, compute_wdiff_w1); | |
293 | } | |
294 | ||
ef358e6d JO |
295 | static int formula_fprintf(struct hist_entry *he, struct hist_entry *pair, |
296 | char *buf, size_t size) | |
ed279da2 JO |
297 | { |
298 | switch (compute) { | |
299 | case COMPUTE_DELTA: | |
f4c8bae1 | 300 | return formula_delta(he, pair, buf, size); |
ed279da2 | 301 | case COMPUTE_RATIO: |
f4c8bae1 | 302 | return formula_ratio(he, pair, buf, size); |
ed279da2 | 303 | case COMPUTE_WEIGHTED_DIFF: |
f4c8bae1 | 304 | return formula_wdiff(he, pair, buf, size); |
ed279da2 JO |
305 | default: |
306 | BUG_ON(1); | |
307 | } | |
308 | ||
309 | return -1; | |
310 | } | |
311 | ||
1c02c4d2 | 312 | static int hists__add_entry(struct hists *self, |
05484298 AK |
313 | struct addr_location *al, u64 period, |
314 | u64 weight) | |
86a9eee0 | 315 | { |
05484298 | 316 | if (__hists__add_entry(self, al, NULL, period, weight) != NULL) |
28e2a106 ACM |
317 | return 0; |
318 | return -ENOMEM; | |
86a9eee0 ACM |
319 | } |
320 | ||
1d037ca1 | 321 | static int diff__process_sample_event(struct perf_tool *tool __maybe_unused, |
d20deb64 | 322 | union perf_event *event, |
8d50e5b4 | 323 | struct perf_sample *sample, |
863e451f | 324 | struct perf_evsel *evsel, |
743eb868 | 325 | struct machine *machine) |
86a9eee0 ACM |
326 | { |
327 | struct addr_location al; | |
86a9eee0 | 328 | |
743eb868 | 329 | if (perf_event__preprocess_sample(event, machine, &al, sample, NULL) < 0) { |
86a9eee0 ACM |
330 | pr_warning("problem processing %d event, skipping it.\n", |
331 | event->header.type); | |
332 | return -1; | |
333 | } | |
334 | ||
d88c48f9 | 335 | if (al.filtered) |
c410a338 ACM |
336 | return 0; |
337 | ||
05484298 | 338 | if (hists__add_entry(&evsel->hists, &al, sample->period, sample->weight)) { |
c82ee828 | 339 | pr_warning("problem incrementing symbol period, skipping event\n"); |
86a9eee0 ACM |
340 | return -1; |
341 | } | |
342 | ||
863e451f | 343 | evsel->hists.stats.total_period += sample->period; |
86a9eee0 ACM |
344 | return 0; |
345 | } | |
346 | ||
863e451f JO |
347 | static struct perf_tool tool = { |
348 | .sample = diff__process_sample_event, | |
349 | .mmap = perf_event__process_mmap, | |
350 | .comm = perf_event__process_comm, | |
f62d3f0f ACM |
351 | .exit = perf_event__process_exit, |
352 | .fork = perf_event__process_fork, | |
863e451f JO |
353 | .lost = perf_event__process_lost, |
354 | .ordered_samples = true, | |
355 | .ordering_requires_timestamps = true, | |
86a9eee0 ACM |
356 | }; |
357 | ||
863e451f JO |
358 | static struct perf_evsel *evsel_match(struct perf_evsel *evsel, |
359 | struct perf_evlist *evlist) | |
360 | { | |
361 | struct perf_evsel *e; | |
362 | ||
363 | list_for_each_entry(e, &evlist->entries, node) | |
364 | if (perf_evsel__match2(evsel, e)) | |
365 | return e; | |
366 | ||
367 | return NULL; | |
368 | } | |
369 | ||
ce74f60e | 370 | static void perf_evlist__collapse_resort(struct perf_evlist *evlist) |
dd464345 JO |
371 | { |
372 | struct perf_evsel *evsel; | |
373 | ||
374 | list_for_each_entry(evsel, &evlist->entries, node) { | |
375 | struct hists *hists = &evsel->hists; | |
376 | ||
ce74f60e | 377 | hists__collapse_resort(hists); |
dd464345 JO |
378 | } |
379 | } | |
380 | ||
a06d143e JO |
381 | static void hists__baseline_only(struct hists *hists) |
382 | { | |
ce74f60e NK |
383 | struct rb_root *root; |
384 | struct rb_node *next; | |
385 | ||
386 | if (sort__need_collapse) | |
387 | root = &hists->entries_collapsed; | |
388 | else | |
389 | root = hists->entries_in; | |
a06d143e | 390 | |
ce74f60e | 391 | next = rb_first(root); |
a06d143e | 392 | while (next != NULL) { |
ce74f60e | 393 | struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node_in); |
a06d143e | 394 | |
ce74f60e | 395 | next = rb_next(&he->rb_node_in); |
b821c732 | 396 | if (!hist_entry__next_pair(he)) { |
ce74f60e | 397 | rb_erase(&he->rb_node_in, root); |
a06d143e JO |
398 | hist_entry__free(he); |
399 | } | |
400 | } | |
401 | } | |
402 | ||
96c47f19 JO |
403 | static void hists__precompute(struct hists *hists) |
404 | { | |
367c53c0 JO |
405 | struct rb_root *root; |
406 | struct rb_node *next; | |
407 | ||
408 | if (sort__need_collapse) | |
409 | root = &hists->entries_collapsed; | |
410 | else | |
411 | root = hists->entries_in; | |
96c47f19 | 412 | |
367c53c0 | 413 | next = rb_first(root); |
96c47f19 | 414 | while (next != NULL) { |
367c53c0 | 415 | struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node_in); |
05472daa | 416 | struct hist_entry *pair = hist_entry__next_pair(he); |
96c47f19 | 417 | |
367c53c0 | 418 | next = rb_next(&he->rb_node_in); |
05472daa JO |
419 | if (!pair) |
420 | continue; | |
96c47f19 JO |
421 | |
422 | switch (compute) { | |
423 | case COMPUTE_DELTA: | |
ef358e6d | 424 | compute_delta(he, pair); |
96c47f19 JO |
425 | break; |
426 | case COMPUTE_RATIO: | |
ef358e6d | 427 | compute_ratio(he, pair); |
96c47f19 | 428 | break; |
81d5f958 | 429 | case COMPUTE_WEIGHTED_DIFF: |
ef358e6d | 430 | compute_wdiff(he, pair); |
81d5f958 | 431 | break; |
96c47f19 JO |
432 | default: |
433 | BUG_ON(1); | |
434 | } | |
435 | } | |
436 | } | |
437 | ||
438 | static int64_t cmp_doubles(double l, double r) | |
439 | { | |
440 | if (l > r) | |
441 | return -1; | |
442 | else if (l < r) | |
443 | return 1; | |
444 | else | |
445 | return 0; | |
446 | } | |
447 | ||
448 | static int64_t | |
449 | hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right, | |
450 | int c) | |
451 | { | |
452 | switch (c) { | |
453 | case COMPUTE_DELTA: | |
454 | { | |
455 | double l = left->diff.period_ratio_delta; | |
456 | double r = right->diff.period_ratio_delta; | |
457 | ||
458 | return cmp_doubles(l, r); | |
459 | } | |
460 | case COMPUTE_RATIO: | |
461 | { | |
462 | double l = left->diff.period_ratio; | |
463 | double r = right->diff.period_ratio; | |
464 | ||
465 | return cmp_doubles(l, r); | |
466 | } | |
81d5f958 JO |
467 | case COMPUTE_WEIGHTED_DIFF: |
468 | { | |
469 | s64 l = left->diff.wdiff; | |
470 | s64 r = right->diff.wdiff; | |
471 | ||
472 | return r - l; | |
473 | } | |
96c47f19 JO |
474 | default: |
475 | BUG_ON(1); | |
476 | } | |
477 | ||
478 | return 0; | |
479 | } | |
480 | ||
481 | static void insert_hist_entry_by_compute(struct rb_root *root, | |
482 | struct hist_entry *he, | |
483 | int c) | |
484 | { | |
485 | struct rb_node **p = &root->rb_node; | |
486 | struct rb_node *parent = NULL; | |
487 | struct hist_entry *iter; | |
488 | ||
489 | while (*p != NULL) { | |
490 | parent = *p; | |
491 | iter = rb_entry(parent, struct hist_entry, rb_node); | |
492 | if (hist_entry__cmp_compute(he, iter, c) < 0) | |
493 | p = &(*p)->rb_left; | |
494 | else | |
495 | p = &(*p)->rb_right; | |
496 | } | |
497 | ||
498 | rb_link_node(&he->rb_node, parent, p); | |
499 | rb_insert_color(&he->rb_node, root); | |
500 | } | |
501 | ||
502 | static void hists__compute_resort(struct hists *hists) | |
503 | { | |
66f97ed3 NK |
504 | struct rb_root *root; |
505 | struct rb_node *next; | |
506 | ||
507 | if (sort__need_collapse) | |
508 | root = &hists->entries_collapsed; | |
509 | else | |
510 | root = hists->entries_in; | |
511 | ||
512 | hists->entries = RB_ROOT; | |
513 | next = rb_first(root); | |
514 | ||
515 | hists->nr_entries = 0; | |
516 | hists->stats.total_period = 0; | |
517 | hists__reset_col_len(hists); | |
96c47f19 JO |
518 | |
519 | while (next != NULL) { | |
66f97ed3 | 520 | struct hist_entry *he; |
96c47f19 | 521 | |
66f97ed3 NK |
522 | he = rb_entry(next, struct hist_entry, rb_node_in); |
523 | next = rb_next(&he->rb_node_in); | |
96c47f19 | 524 | |
66f97ed3 NK |
525 | insert_hist_entry_by_compute(&hists->entries, he, compute); |
526 | hists__inc_nr_entries(hists, he); | |
96c47f19 | 527 | } |
96c47f19 JO |
528 | } |
529 | ||
22aeb7f5 | 530 | static void hists__process(struct hists *hists) |
a06d143e | 531 | { |
a06d143e | 532 | if (show_baseline_only) |
22aeb7f5 | 533 | hists__baseline_only(hists); |
a06d143e | 534 | |
96c47f19 | 535 | if (sort_compute) { |
22aeb7f5 JO |
536 | hists__precompute(hists); |
537 | hists__compute_resort(hists); | |
66f97ed3 | 538 | } else { |
22aeb7f5 | 539 | hists__output_resort(hists); |
96c47f19 JO |
540 | } |
541 | ||
22aeb7f5 | 542 | hists__fprintf(hists, true, 0, 0, 0, stdout); |
a06d143e JO |
543 | } |
544 | ||
1d81c7fc JO |
545 | static void data__fprintf(void) |
546 | { | |
547 | struct data__file *d; | |
548 | int i; | |
549 | ||
550 | fprintf(stdout, "# Data files:\n"); | |
551 | ||
552 | data__for_each_file(i, d) | |
553 | fprintf(stdout, "# [%d] %s %s\n", | |
554 | d->idx, d->file, | |
555 | !d->idx ? "(Baseline)" : ""); | |
556 | ||
557 | fprintf(stdout, "#\n"); | |
558 | } | |
559 | ||
ec308426 | 560 | static void data_process(void) |
86a9eee0 | 561 | { |
22aeb7f5 JO |
562 | struct perf_evlist *evlist_base = data__files[0].session->evlist; |
563 | struct perf_evsel *evsel_base; | |
863e451f | 564 | bool first = true; |
86a9eee0 | 565 | |
22aeb7f5 JO |
566 | list_for_each_entry(evsel_base, &evlist_base->entries, node) { |
567 | struct data__file *d; | |
568 | int i; | |
86a9eee0 | 569 | |
22aeb7f5 JO |
570 | data__for_each_file_new(i, d) { |
571 | struct perf_evlist *evlist = d->session->evlist; | |
572 | struct perf_evsel *evsel; | |
573 | ||
574 | evsel = evsel_match(evsel_base, evlist); | |
575 | if (!evsel) | |
576 | continue; | |
577 | ||
578 | d->hists = &evsel->hists; | |
579 | ||
580 | hists__match(&evsel_base->hists, &evsel->hists); | |
581 | ||
582 | if (!show_baseline_only) | |
583 | hists__link(&evsel_base->hists, | |
584 | &evsel->hists); | |
585 | } | |
86a9eee0 | 586 | |
ec308426 | 587 | fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n", |
22aeb7f5 | 588 | perf_evsel__name(evsel_base)); |
863e451f | 589 | |
ec308426 | 590 | first = false; |
863e451f | 591 | |
22aeb7f5 | 592 | if (verbose || data__files_cnt > 2) |
1d81c7fc JO |
593 | data__fprintf(); |
594 | ||
22aeb7f5 | 595 | hists__process(&evsel_base->hists); |
ec308426 JO |
596 | } |
597 | } | |
863e451f | 598 | |
c818b498 JO |
599 | static void data__free(struct data__file *d) |
600 | { | |
601 | int col; | |
602 | ||
603 | for (col = 0; col < PERF_HPP_DIFF__MAX_INDEX; col++) { | |
604 | struct diff_hpp_fmt *fmt = &d->fmt[col]; | |
605 | ||
606 | free(fmt->header); | |
607 | } | |
608 | } | |
609 | ||
ec308426 JO |
610 | static int __cmd_diff(void) |
611 | { | |
612 | struct data__file *d; | |
613 | int ret = -EINVAL, i; | |
614 | ||
615 | data__for_each_file(i, d) { | |
616 | d->session = perf_session__new(d->file, O_RDONLY, force, | |
617 | false, &tool); | |
618 | if (!d->session) { | |
619 | pr_err("Failed to open %s\n", d->file); | |
620 | ret = -ENOMEM; | |
621 | goto out_delete; | |
622 | } | |
863e451f | 623 | |
ec308426 JO |
624 | ret = perf_session__process_events(d->session, &tool); |
625 | if (ret) { | |
626 | pr_err("Failed to process %s\n", d->file); | |
627 | goto out_delete; | |
628 | } | |
863e451f | 629 | |
ec308426 JO |
630 | perf_evlist__collapse_resort(d->session->evlist); |
631 | } | |
632 | ||
633 | data_process(); | |
863e451f | 634 | |
ec308426 JO |
635 | out_delete: |
636 | data__for_each_file(i, d) { | |
637 | if (d->session) | |
638 | perf_session__delete(d->session); | |
c818b498 JO |
639 | |
640 | data__free(d); | |
863e451f | 641 | } |
9c443dfd | 642 | |
ec308426 | 643 | free(data__files); |
86a9eee0 ACM |
644 | return ret; |
645 | } | |
646 | ||
0422a4fc | 647 | static const char * const diff_usage[] = { |
86a9eee0 | 648 | "perf diff [<options>] [old_file] [new_file]", |
0422a4fc | 649 | NULL, |
86a9eee0 ACM |
650 | }; |
651 | ||
652 | static const struct option options[] = { | |
c0555642 | 653 | OPT_INCR('v', "verbose", &verbose, |
86a9eee0 | 654 | "be more verbose (show symbol address, etc)"), |
a06d143e JO |
655 | OPT_BOOLEAN('b', "baseline-only", &show_baseline_only, |
656 | "Show only items with match in baseline"), | |
81d5f958 JO |
657 | OPT_CALLBACK('c', "compute", &compute, |
658 | "delta,ratio,wdiff:w1,w2 (default delta)", | |
7aaf6b35 JO |
659 | "Entries differential computation selection", |
660 | setup_compute), | |
61949b21 JO |
661 | OPT_BOOLEAN('p', "period", &show_period, |
662 | "Show period values."), | |
ed279da2 JO |
663 | OPT_BOOLEAN('F', "formula", &show_formula, |
664 | "Show formula."), | |
86a9eee0 ACM |
665 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
666 | "dump raw trace in ASCII"), | |
667 | OPT_BOOLEAN('f', "force", &force, "don't complain, do it"), | |
668 | OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules, | |
669 | "load module symbols - WARNING: use only with -k and LIVE kernel"), | |
c410a338 ACM |
670 | OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]", |
671 | "only consider symbols in these dsos"), | |
672 | OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]", | |
673 | "only consider symbols in these comms"), | |
674 | OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]", | |
675 | "only consider these symbols"), | |
c351c281 ACM |
676 | OPT_STRING('s', "sort", &sort_order, "key[,key2...]", |
677 | "sort by key(s): pid, comm, dso, symbol, parent"), | |
678 | OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator", | |
679 | "separator for columns, no spaces will be added between " | |
680 | "columns '.' is reserved."), | |
ec5761ea DA |
681 | OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory", |
682 | "Look for files with symbols relative to this directory"), | |
86a9eee0 ACM |
683 | OPT_END() |
684 | }; | |
685 | ||
345dc0b4 | 686 | static double baseline_percent(struct hist_entry *he) |
1d77822e | 687 | { |
345dc0b4 JO |
688 | struct hists *hists = he->hists; |
689 | return 100.0 * he->stat.period / hists->stats.total_period; | |
690 | } | |
7aaf6b35 | 691 | |
345dc0b4 JO |
692 | static int hpp__color_baseline(struct perf_hpp_fmt *fmt, |
693 | struct perf_hpp *hpp, struct hist_entry *he) | |
694 | { | |
695 | struct diff_hpp_fmt *dfmt = | |
696 | container_of(fmt, struct diff_hpp_fmt, fmt); | |
697 | double percent = baseline_percent(he); | |
698 | char pfmt[20] = " "; | |
699 | ||
700 | if (!he->dummy) { | |
701 | scnprintf(pfmt, 20, "%%%d.2f%%%%", dfmt->header_width - 1); | |
702 | return percent_color_snprintf(hpp->buf, hpp->size, | |
703 | pfmt, percent); | |
704 | } else | |
705 | return scnprintf(hpp->buf, hpp->size, "%*s", | |
706 | dfmt->header_width, pfmt); | |
707 | } | |
708 | ||
709 | static int hpp__entry_baseline(struct hist_entry *he, char *buf, size_t size) | |
710 | { | |
711 | double percent = baseline_percent(he); | |
712 | const char *fmt = symbol_conf.field_sep ? "%.2f" : "%6.2f%%"; | |
713 | int ret = 0; | |
714 | ||
715 | if (!he->dummy) | |
716 | ret = scnprintf(buf, size, fmt, percent); | |
717 | ||
718 | return ret; | |
719 | } | |
720 | ||
721 | static void | |
722 | hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size) | |
723 | { | |
724 | switch (idx) { | |
725 | case PERF_HPP_DIFF__PERIOD_BASELINE: | |
726 | scnprintf(buf, size, "%" PRIu64, he->stat.period); | |
7aaf6b35 | 727 | break; |
345dc0b4 JO |
728 | |
729 | default: | |
81d5f958 | 730 | break; |
345dc0b4 JO |
731 | } |
732 | } | |
733 | ||
734 | static void | |
735 | hpp__entry_pair(struct hist_entry *he, struct hist_entry *pair, | |
736 | int idx, char *buf, size_t size) | |
737 | { | |
738 | double diff; | |
739 | double ratio; | |
740 | s64 wdiff; | |
741 | ||
742 | switch (idx) { | |
743 | case PERF_HPP_DIFF__DELTA: | |
744 | if (pair->diff.computed) | |
745 | diff = pair->diff.period_ratio_delta; | |
746 | else | |
ef358e6d | 747 | diff = compute_delta(he, pair); |
345dc0b4 JO |
748 | |
749 | if (fabs(diff) >= 0.01) | |
750 | scnprintf(buf, size, "%+4.2F%%", diff); | |
751 | break; | |
752 | ||
753 | case PERF_HPP_DIFF__RATIO: | |
754 | /* No point for ratio number if we are dummy.. */ | |
755 | if (he->dummy) | |
756 | break; | |
757 | ||
758 | if (pair->diff.computed) | |
759 | ratio = pair->diff.period_ratio; | |
760 | else | |
ef358e6d | 761 | ratio = compute_ratio(he, pair); |
345dc0b4 JO |
762 | |
763 | if (ratio > 0.0) | |
764 | scnprintf(buf, size, "%14.6F", ratio); | |
765 | break; | |
766 | ||
767 | case PERF_HPP_DIFF__WEIGHTED_DIFF: | |
768 | /* No point for wdiff number if we are dummy.. */ | |
769 | if (he->dummy) | |
770 | break; | |
771 | ||
772 | if (pair->diff.computed) | |
773 | wdiff = pair->diff.wdiff; | |
774 | else | |
ef358e6d | 775 | wdiff = compute_wdiff(he, pair); |
345dc0b4 JO |
776 | |
777 | if (wdiff != 0) | |
778 | scnprintf(buf, size, "%14ld", wdiff); | |
779 | break; | |
780 | ||
781 | case PERF_HPP_DIFF__FORMULA: | |
ef358e6d | 782 | formula_fprintf(he, pair, buf, size); |
7aaf6b35 | 783 | break; |
345dc0b4 JO |
784 | |
785 | case PERF_HPP_DIFF__PERIOD: | |
786 | scnprintf(buf, size, "%" PRIu64, pair->stat.period); | |
787 | break; | |
788 | ||
7aaf6b35 JO |
789 | default: |
790 | BUG_ON(1); | |
791 | }; | |
345dc0b4 JO |
792 | } |
793 | ||
22aeb7f5 JO |
794 | static struct hist_entry *get_pair(struct hist_entry *he, |
795 | struct diff_hpp_fmt *dfmt) | |
796 | { | |
797 | void *ptr = dfmt - dfmt->idx; | |
798 | struct data__file *d = container_of(ptr, struct data__file, fmt); | |
799 | ||
800 | if (hist_entry__has_pairs(he)) { | |
801 | struct hist_entry *pair; | |
802 | ||
803 | list_for_each_entry(pair, &he->pairs.head, pairs.node) | |
804 | if (pair->hists == d->hists) | |
805 | return pair; | |
806 | } | |
807 | ||
808 | return NULL; | |
809 | } | |
810 | ||
345dc0b4 | 811 | static void |
22aeb7f5 JO |
812 | __hpp__entry_global(struct hist_entry *he, struct diff_hpp_fmt *dfmt, |
813 | char *buf, size_t size) | |
345dc0b4 | 814 | { |
22aeb7f5 JO |
815 | struct hist_entry *pair = get_pair(he, dfmt); |
816 | int idx = dfmt->idx; | |
345dc0b4 JO |
817 | |
818 | /* baseline is special */ | |
819 | if (idx == PERF_HPP_DIFF__BASELINE) | |
820 | hpp__entry_baseline(he, buf, size); | |
821 | else { | |
822 | if (pair) | |
823 | hpp__entry_pair(he, pair, idx, buf, size); | |
824 | else | |
825 | hpp__entry_unpair(he, idx, buf, size); | |
826 | } | |
827 | } | |
828 | ||
829 | static int hpp__entry_global(struct perf_hpp_fmt *_fmt, struct perf_hpp *hpp, | |
830 | struct hist_entry *he) | |
831 | { | |
832 | struct diff_hpp_fmt *dfmt = | |
833 | container_of(_fmt, struct diff_hpp_fmt, fmt); | |
834 | char buf[MAX_COL_WIDTH] = " "; | |
835 | ||
22aeb7f5 | 836 | __hpp__entry_global(he, dfmt, buf, MAX_COL_WIDTH); |
345dc0b4 JO |
837 | |
838 | if (symbol_conf.field_sep) | |
839 | return scnprintf(hpp->buf, hpp->size, "%s", buf); | |
840 | else | |
841 | return scnprintf(hpp->buf, hpp->size, "%*s", | |
842 | dfmt->header_width, buf); | |
843 | } | |
844 | ||
845 | static int hpp__header(struct perf_hpp_fmt *fmt, | |
846 | struct perf_hpp *hpp) | |
847 | { | |
848 | struct diff_hpp_fmt *dfmt = | |
849 | container_of(fmt, struct diff_hpp_fmt, fmt); | |
850 | ||
851 | BUG_ON(!dfmt->header); | |
852 | return scnprintf(hpp->buf, hpp->size, dfmt->header); | |
853 | } | |
854 | ||
855 | static int hpp__width(struct perf_hpp_fmt *fmt, | |
856 | struct perf_hpp *hpp __maybe_unused) | |
857 | { | |
858 | struct diff_hpp_fmt *dfmt = | |
859 | container_of(fmt, struct diff_hpp_fmt, fmt); | |
860 | ||
861 | BUG_ON(dfmt->header_width <= 0); | |
862 | return dfmt->header_width; | |
863 | } | |
864 | ||
22aeb7f5 | 865 | static void init_header(struct data__file *d, struct diff_hpp_fmt *dfmt) |
345dc0b4 JO |
866 | { |
867 | #define MAX_HEADER_NAME 100 | |
868 | char buf_indent[MAX_HEADER_NAME]; | |
869 | char buf[MAX_HEADER_NAME]; | |
870 | const char *header = NULL; | |
871 | int width = 0; | |
872 | ||
873 | BUG_ON(dfmt->idx >= PERF_HPP_DIFF__MAX_INDEX); | |
874 | header = columns[dfmt->idx].name; | |
875 | width = columns[dfmt->idx].width; | |
876 | ||
877 | /* Only our defined HPP fmts should appear here. */ | |
878 | BUG_ON(!header); | |
879 | ||
22aeb7f5 JO |
880 | if (data__files_cnt > 2) |
881 | scnprintf(buf, MAX_HEADER_NAME, "%s/%d", header, d->idx); | |
882 | ||
345dc0b4 JO |
883 | #define NAME (data__files_cnt > 2 ? buf : header) |
884 | dfmt->header_width = width; | |
885 | width = (int) strlen(NAME); | |
886 | if (dfmt->header_width < width) | |
887 | dfmt->header_width = width; | |
888 | ||
889 | scnprintf(buf_indent, MAX_HEADER_NAME, "%*s", | |
890 | dfmt->header_width, NAME); | |
891 | ||
892 | dfmt->header = strdup(buf_indent); | |
893 | #undef MAX_HEADER_NAME | |
894 | #undef NAME | |
895 | } | |
896 | ||
c818b498 | 897 | static void data__hpp_register(struct data__file *d, int idx) |
345dc0b4 | 898 | { |
c818b498 JO |
899 | struct diff_hpp_fmt *dfmt = &d->fmt[idx]; |
900 | struct perf_hpp_fmt *fmt = &dfmt->fmt; | |
901 | ||
902 | dfmt->idx = idx; | |
903 | ||
904 | fmt->header = hpp__header; | |
905 | fmt->width = hpp__width; | |
906 | fmt->entry = hpp__entry_global; | |
907 | ||
908 | /* TODO more colors */ | |
909 | if (idx == PERF_HPP_DIFF__BASELINE) | |
910 | fmt->color = hpp__color_baseline; | |
345dc0b4 | 911 | |
22aeb7f5 | 912 | init_header(d, dfmt); |
c818b498 | 913 | perf_hpp__column_register(fmt); |
345dc0b4 JO |
914 | } |
915 | ||
916 | static void ui_init(void) | |
917 | { | |
c818b498 JO |
918 | struct data__file *d; |
919 | int i; | |
920 | ||
921 | data__for_each_file(i, d) { | |
922 | ||
923 | /* | |
924 | * Baseline or compute realted columns: | |
925 | * | |
926 | * PERF_HPP_DIFF__BASELINE | |
927 | * PERF_HPP_DIFF__DELTA | |
928 | * PERF_HPP_DIFF__RATIO | |
929 | * PERF_HPP_DIFF__WEIGHTED_DIFF | |
930 | */ | |
931 | data__hpp_register(d, i ? compute_2_hpp[compute] : | |
932 | PERF_HPP_DIFF__BASELINE); | |
1d77822e | 933 | |
c818b498 JO |
934 | /* |
935 | * And the rest: | |
936 | * | |
937 | * PERF_HPP_DIFF__FORMULA | |
938 | * PERF_HPP_DIFF__PERIOD | |
939 | * PERF_HPP_DIFF__PERIOD_BASELINE | |
940 | */ | |
941 | if (show_formula && i) | |
942 | data__hpp_register(d, PERF_HPP_DIFF__FORMULA); | |
ed279da2 | 943 | |
c818b498 JO |
944 | if (show_period) |
945 | data__hpp_register(d, i ? PERF_HPP_DIFF__PERIOD : | |
946 | PERF_HPP_DIFF__PERIOD_BASELINE); | |
61949b21 | 947 | } |
1d77822e JO |
948 | } |
949 | ||
ec308426 | 950 | static int data_init(int argc, const char **argv) |
86a9eee0 | 951 | { |
ec308426 JO |
952 | struct data__file *d; |
953 | static const char *defaults[] = { | |
954 | "perf.data.old", | |
955 | "perf.data", | |
956 | }; | |
22aeb7f5 | 957 | bool use_default = true; |
ec308426 JO |
958 | int i; |
959 | ||
960 | data__files_cnt = 2; | |
961 | ||
86a9eee0 | 962 | if (argc) { |
22aeb7f5 | 963 | if (argc == 1) |
ec308426 | 964 | defaults[1] = argv[0]; |
22aeb7f5 JO |
965 | else { |
966 | data__files_cnt = argc; | |
967 | use_default = false; | |
968 | } | |
a1645ce1 ZY |
969 | } else if (symbol_conf.default_guest_vmlinux_name || |
970 | symbol_conf.default_guest_kallsyms) { | |
ec308426 JO |
971 | defaults[0] = "perf.data.host"; |
972 | defaults[1] = "perf.data.guest"; | |
86a9eee0 ACM |
973 | } |
974 | ||
ec308426 JO |
975 | data__files = zalloc(sizeof(*data__files) * data__files_cnt); |
976 | if (!data__files) | |
977 | return -ENOMEM; | |
978 | ||
979 | data__for_each_file(i, d) { | |
22aeb7f5 | 980 | d->file = use_default ? defaults[i] : argv[i]; |
ec308426 JO |
981 | d->idx = i; |
982 | } | |
983 | ||
984 | return 0; | |
985 | } | |
986 | ||
987 | int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused) | |
988 | { | |
989 | sort_order = diff__default_sort_order; | |
990 | argc = parse_options(argc, argv, options, diff_usage, 0); | |
991 | ||
655000e7 ACM |
992 | if (symbol__init() < 0) |
993 | return -1; | |
994 | ||
ec308426 JO |
995 | if (data_init(argc, argv) < 0) |
996 | return -1; | |
997 | ||
1d77822e JO |
998 | ui_init(); |
999 | ||
55309985 NK |
1000 | if (setup_sorting() < 0) |
1001 | usage_with_options(diff_usage, options); | |
1002 | ||
86a9eee0 | 1003 | setup_pager(); |
c351c281 | 1004 | |
08e71542 | 1005 | sort__setup_elide(NULL); |
c351c281 | 1006 | |
86a9eee0 ACM |
1007 | return __cmd_diff(); |
1008 | } |