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" | |
f5fc1412 | 19 | #include "util/data.h" |
86a9eee0 ACM |
20 | |
21 | #include <stdlib.h> | |
345dc0b4 JO |
22 | #include <math.h> |
23 | ||
24 | /* Diff command specific HPP columns. */ | |
25 | enum { | |
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 | ||
37 | struct diff_hpp_fmt { | |
38 | struct perf_hpp_fmt fmt; | |
39 | int idx; | |
40 | char *header; | |
41 | int header_width; | |
42 | }; | |
86a9eee0 | 43 | |
ec308426 JO |
44 | struct data__file { |
45 | struct perf_session *session; | |
f5fc1412 | 46 | struct perf_data_file file; |
ec308426 | 47 | int idx; |
22aeb7f5 | 48 | struct hists *hists; |
c818b498 | 49 | struct diff_hpp_fmt fmt[PERF_HPP_DIFF__MAX_INDEX]; |
ec308426 JO |
50 | }; |
51 | ||
52 | static struct data__file *data__files; | |
53 | static 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) | |
22aeb7f5 | 61 | #define data__for_each_file_new(i, d) data__for_each_file_start(i, d, 1) |
ec308426 JO |
62 | |
63 | static char diff__default_sort_order[] = "dso,symbol"; | |
64 | static bool force; | |
61949b21 | 65 | static bool show_period; |
ed279da2 | 66 | static bool show_formula; |
a06d143e | 67 | static bool show_baseline_only; |
5f3f8d3b | 68 | static unsigned int sort_compute; |
86a9eee0 | 69 | |
81d5f958 JO |
70 | static s64 compute_wdiff_w1; |
71 | static s64 compute_wdiff_w2; | |
72 | ||
7aaf6b35 JO |
73 | enum { |
74 | COMPUTE_DELTA, | |
75 | COMPUTE_RATIO, | |
81d5f958 | 76 | COMPUTE_WEIGHTED_DIFF, |
7aaf6b35 JO |
77 | COMPUTE_MAX, |
78 | }; | |
79 | ||
80 | const char *compute_names[COMPUTE_MAX] = { | |
81 | [COMPUTE_DELTA] = "delta", | |
82 | [COMPUTE_RATIO] = "ratio", | |
81d5f958 | 83 | [COMPUTE_WEIGHTED_DIFF] = "wdiff", |
7aaf6b35 JO |
84 | }; |
85 | ||
86 | static int compute; | |
87 | ||
345dc0b4 JO |
88 | static int compute_2_hpp[COMPUTE_MAX] = { |
89 | [COMPUTE_DELTA] = PERF_HPP_DIFF__DELTA, | |
90 | [COMPUTE_RATIO] = PERF_HPP_DIFF__RATIO, | |
91 | [COMPUTE_WEIGHTED_DIFF] = PERF_HPP_DIFF__WEIGHTED_DIFF, | |
92 | }; | |
93 | ||
94 | #define MAX_COL_WIDTH 70 | |
95 | ||
96 | static 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 | ||
81d5f958 JO |
129 | static 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 | ||
165 | static 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 | ||
7aaf6b35 JO |
178 | static int setup_compute(const struct option *opt, const char *str, |
179 | int unset __maybe_unused) | |
180 | { | |
181 | int *cp = (int *) opt->value; | |
81d5f958 JO |
182 | char *cstr = (char *) str; |
183 | char buf[50]; | |
7aaf6b35 | 184 | unsigned i; |
81d5f958 | 185 | char *option; |
7aaf6b35 JO |
186 | |
187 | if (!str) { | |
188 | *cp = COMPUTE_DELTA; | |
189 | return 0; | |
190 | } | |
191 | ||
81d5f958 JO |
192 | 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 | ||
7aaf6b35 | 210 | for (i = 0; i < COMPUTE_MAX; i++) |
81d5f958 | 211 | if (!strcmp(cstr, compute_names[i])) { |
7aaf6b35 | 212 | *cp = i; |
81d5f958 | 213 | return setup_compute_opt(option); |
7aaf6b35 JO |
214 | } |
215 | ||
216 | pr_err("Failed: '%s' is not computation method " | |
81d5f958 | 217 | "(use 'delta','ratio' or 'wdiff')\n", str); |
7aaf6b35 JO |
218 | return -EINVAL; |
219 | } | |
220 | ||
ef358e6d | 221 | static double period_percent(struct hist_entry *he, u64 period) |
96c47f19 | 222 | { |
8810f6ce NK |
223 | u64 total = hists__total_period(he->hists); |
224 | ||
96c47f19 JO |
225 | return (period * 100.0) / total; |
226 | } | |
227 | ||
ef358e6d | 228 | static double compute_delta(struct hist_entry *he, struct hist_entry *pair) |
96c47f19 | 229 | { |
ef358e6d JO |
230 | double old_percent = period_percent(he, he->stat.period); |
231 | double new_percent = period_percent(pair, pair->stat.period); | |
96c47f19 | 232 | |
9af303e2 JO |
233 | pair->diff.period_ratio_delta = new_percent - old_percent; |
234 | pair->diff.computed = true; | |
235 | return pair->diff.period_ratio_delta; | |
96c47f19 JO |
236 | } |
237 | ||
ef358e6d | 238 | static double compute_ratio(struct hist_entry *he, struct hist_entry *pair) |
96c47f19 | 239 | { |
9af303e2 JO |
240 | double old_period = he->stat.period ?: 1; |
241 | double new_period = pair->stat.period; | |
96c47f19 | 242 | |
9af303e2 JO |
243 | pair->diff.computed = true; |
244 | pair->diff.period_ratio = new_period / old_period; | |
245 | return pair->diff.period_ratio; | |
96c47f19 JO |
246 | } |
247 | ||
ef358e6d | 248 | static s64 compute_wdiff(struct hist_entry *he, struct hist_entry *pair) |
81d5f958 | 249 | { |
9af303e2 JO |
250 | u64 old_period = he->stat.period; |
251 | u64 new_period = pair->stat.period; | |
81d5f958 | 252 | |
9af303e2 JO |
253 | pair->diff.computed = true; |
254 | pair->diff.wdiff = new_period * compute_wdiff_w2 - | |
255 | old_period * compute_wdiff_w1; | |
81d5f958 | 256 | |
9af303e2 | 257 | return pair->diff.wdiff; |
81d5f958 JO |
258 | } |
259 | ||
f4c8bae1 JO |
260 | static int formula_delta(struct hist_entry *he, struct hist_entry *pair, |
261 | char *buf, size_t size) | |
ed279da2 | 262 | { |
8810f6ce NK |
263 | u64 he_total = he->hists->stats.total_period; |
264 | u64 pair_total = pair->hists->stats.total_period; | |
265 | ||
266 | if (symbol_conf.filter_relative) { | |
267 | he_total = he->hists->stats.total_non_filtered_period; | |
268 | pair_total = pair->hists->stats.total_non_filtered_period; | |
269 | } | |
ed279da2 JO |
270 | return scnprintf(buf, size, |
271 | "(%" PRIu64 " * 100 / %" PRIu64 ") - " | |
272 | "(%" PRIu64 " * 100 / %" PRIu64 ")", | |
8810f6ce NK |
273 | pair->stat.period, pair_total, |
274 | he->stat.period, he_total); | |
ed279da2 JO |
275 | } |
276 | ||
f4c8bae1 JO |
277 | static int formula_ratio(struct hist_entry *he, struct hist_entry *pair, |
278 | char *buf, size_t size) | |
ed279da2 | 279 | { |
9af303e2 JO |
280 | double old_period = he->stat.period; |
281 | double new_period = pair->stat.period; | |
ed279da2 JO |
282 | |
283 | return scnprintf(buf, size, "%.0F / %.0F", new_period, old_period); | |
284 | } | |
285 | ||
f4c8bae1 JO |
286 | static int formula_wdiff(struct hist_entry *he, struct hist_entry *pair, |
287 | char *buf, size_t size) | |
ed279da2 | 288 | { |
9af303e2 JO |
289 | u64 old_period = he->stat.period; |
290 | u64 new_period = pair->stat.period; | |
ed279da2 JO |
291 | |
292 | return scnprintf(buf, size, | |
293 | "(%" PRIu64 " * " "%" PRId64 ") - (%" PRIu64 " * " "%" PRId64 ")", | |
294 | new_period, compute_wdiff_w2, old_period, compute_wdiff_w1); | |
295 | } | |
296 | ||
ef358e6d JO |
297 | static int formula_fprintf(struct hist_entry *he, struct hist_entry *pair, |
298 | char *buf, size_t size) | |
ed279da2 JO |
299 | { |
300 | switch (compute) { | |
301 | case COMPUTE_DELTA: | |
f4c8bae1 | 302 | return formula_delta(he, pair, buf, size); |
ed279da2 | 303 | case COMPUTE_RATIO: |
f4c8bae1 | 304 | return formula_ratio(he, pair, buf, size); |
ed279da2 | 305 | case COMPUTE_WEIGHTED_DIFF: |
f4c8bae1 | 306 | return formula_wdiff(he, pair, buf, size); |
ed279da2 JO |
307 | default: |
308 | BUG_ON(1); | |
309 | } | |
310 | ||
311 | return -1; | |
312 | } | |
313 | ||
c824c433 | 314 | static int hists__add_entry(struct hists *hists, |
05484298 | 315 | struct addr_location *al, u64 period, |
475eeab9 | 316 | u64 weight, u64 transaction) |
86a9eee0 | 317 | { |
41a4e6e2 NK |
318 | if (__hists__add_entry(hists, al, NULL, NULL, NULL, period, weight, |
319 | transaction) != NULL) | |
28e2a106 ACM |
320 | return 0; |
321 | return -ENOMEM; | |
86a9eee0 ACM |
322 | } |
323 | ||
1d037ca1 | 324 | static int diff__process_sample_event(struct perf_tool *tool __maybe_unused, |
d20deb64 | 325 | union perf_event *event, |
8d50e5b4 | 326 | struct perf_sample *sample, |
863e451f | 327 | struct perf_evsel *evsel, |
743eb868 | 328 | struct machine *machine) |
86a9eee0 ACM |
329 | { |
330 | struct addr_location al; | |
86a9eee0 | 331 | |
e44baa3e | 332 | if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) { |
86a9eee0 ACM |
333 | pr_warning("problem processing %d event, skipping it.\n", |
334 | event->header.type); | |
335 | return -1; | |
336 | } | |
337 | ||
475eeab9 AK |
338 | if (hists__add_entry(&evsel->hists, &al, sample->period, |
339 | sample->weight, sample->transaction)) { | |
c82ee828 | 340 | pr_warning("problem incrementing symbol period, skipping event\n"); |
86a9eee0 ACM |
341 | return -1; |
342 | } | |
343 | ||
8810f6ce NK |
344 | if (al.filtered == 0) { |
345 | evsel->hists.stats.total_non_filtered_period += sample->period; | |
346 | evsel->hists.nr_non_filtered_entries++; | |
347 | } | |
863e451f | 348 | evsel->hists.stats.total_period += sample->period; |
86a9eee0 ACM |
349 | return 0; |
350 | } | |
351 | ||
863e451f JO |
352 | static struct perf_tool tool = { |
353 | .sample = diff__process_sample_event, | |
354 | .mmap = perf_event__process_mmap, | |
355 | .comm = perf_event__process_comm, | |
f62d3f0f ACM |
356 | .exit = perf_event__process_exit, |
357 | .fork = perf_event__process_fork, | |
863e451f JO |
358 | .lost = perf_event__process_lost, |
359 | .ordered_samples = true, | |
360 | .ordering_requires_timestamps = true, | |
86a9eee0 ACM |
361 | }; |
362 | ||
863e451f JO |
363 | static struct perf_evsel *evsel_match(struct perf_evsel *evsel, |
364 | struct perf_evlist *evlist) | |
365 | { | |
366 | struct perf_evsel *e; | |
367 | ||
0050f7aa | 368 | evlist__for_each(evlist, e) { |
863e451f JO |
369 | if (perf_evsel__match2(evsel, e)) |
370 | return e; | |
0050f7aa | 371 | } |
863e451f JO |
372 | |
373 | return NULL; | |
374 | } | |
375 | ||
ce74f60e | 376 | static void perf_evlist__collapse_resort(struct perf_evlist *evlist) |
dd464345 JO |
377 | { |
378 | struct perf_evsel *evsel; | |
379 | ||
0050f7aa | 380 | evlist__for_each(evlist, evsel) { |
dd464345 JO |
381 | struct hists *hists = &evsel->hists; |
382 | ||
c1fb5651 | 383 | hists__collapse_resort(hists, NULL); |
dd464345 JO |
384 | } |
385 | } | |
386 | ||
5f3f8d3b JO |
387 | static struct hist_entry* |
388 | get_pair_data(struct hist_entry *he, struct data__file *d) | |
389 | { | |
390 | if (hist_entry__has_pairs(he)) { | |
391 | struct hist_entry *pair; | |
392 | ||
393 | list_for_each_entry(pair, &he->pairs.head, pairs.node) | |
394 | if (pair->hists == d->hists) | |
395 | return pair; | |
396 | } | |
397 | ||
398 | return NULL; | |
399 | } | |
400 | ||
401 | static struct hist_entry* | |
402 | get_pair_fmt(struct hist_entry *he, struct diff_hpp_fmt *dfmt) | |
403 | { | |
404 | void *ptr = dfmt - dfmt->idx; | |
405 | struct data__file *d = container_of(ptr, struct data__file, fmt); | |
406 | ||
407 | return get_pair_data(he, d); | |
408 | } | |
409 | ||
a06d143e JO |
410 | static void hists__baseline_only(struct hists *hists) |
411 | { | |
ce74f60e NK |
412 | struct rb_root *root; |
413 | struct rb_node *next; | |
414 | ||
415 | if (sort__need_collapse) | |
416 | root = &hists->entries_collapsed; | |
417 | else | |
418 | root = hists->entries_in; | |
a06d143e | 419 | |
ce74f60e | 420 | next = rb_first(root); |
a06d143e | 421 | while (next != NULL) { |
ce74f60e | 422 | struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node_in); |
a06d143e | 423 | |
ce74f60e | 424 | next = rb_next(&he->rb_node_in); |
b821c732 | 425 | if (!hist_entry__next_pair(he)) { |
ce74f60e | 426 | rb_erase(&he->rb_node_in, root); |
a06d143e JO |
427 | hist_entry__free(he); |
428 | } | |
429 | } | |
430 | } | |
431 | ||
96c47f19 JO |
432 | static void hists__precompute(struct hists *hists) |
433 | { | |
367c53c0 JO |
434 | struct rb_root *root; |
435 | struct rb_node *next; | |
436 | ||
437 | if (sort__need_collapse) | |
438 | root = &hists->entries_collapsed; | |
439 | else | |
440 | root = hists->entries_in; | |
96c47f19 | 441 | |
367c53c0 | 442 | next = rb_first(root); |
96c47f19 | 443 | while (next != NULL) { |
5f3f8d3b | 444 | struct hist_entry *he, *pair; |
96c47f19 | 445 | |
5f3f8d3b | 446 | he = rb_entry(next, struct hist_entry, rb_node_in); |
367c53c0 | 447 | next = rb_next(&he->rb_node_in); |
5f3f8d3b JO |
448 | |
449 | pair = get_pair_data(he, &data__files[sort_compute]); | |
05472daa JO |
450 | if (!pair) |
451 | continue; | |
96c47f19 JO |
452 | |
453 | switch (compute) { | |
454 | case COMPUTE_DELTA: | |
ef358e6d | 455 | compute_delta(he, pair); |
96c47f19 JO |
456 | break; |
457 | case COMPUTE_RATIO: | |
ef358e6d | 458 | compute_ratio(he, pair); |
96c47f19 | 459 | break; |
81d5f958 | 460 | case COMPUTE_WEIGHTED_DIFF: |
ef358e6d | 461 | compute_wdiff(he, pair); |
81d5f958 | 462 | break; |
96c47f19 JO |
463 | default: |
464 | BUG_ON(1); | |
465 | } | |
466 | } | |
467 | } | |
468 | ||
469 | static int64_t cmp_doubles(double l, double r) | |
470 | { | |
471 | if (l > r) | |
472 | return -1; | |
473 | else if (l < r) | |
474 | return 1; | |
475 | else | |
476 | return 0; | |
477 | } | |
478 | ||
479 | static int64_t | |
5f3f8d3b | 480 | __hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right, |
96c47f19 JO |
481 | int c) |
482 | { | |
483 | switch (c) { | |
484 | case COMPUTE_DELTA: | |
485 | { | |
486 | double l = left->diff.period_ratio_delta; | |
487 | double r = right->diff.period_ratio_delta; | |
488 | ||
489 | return cmp_doubles(l, r); | |
490 | } | |
491 | case COMPUTE_RATIO: | |
492 | { | |
493 | double l = left->diff.period_ratio; | |
494 | double r = right->diff.period_ratio; | |
495 | ||
496 | return cmp_doubles(l, r); | |
497 | } | |
81d5f958 JO |
498 | case COMPUTE_WEIGHTED_DIFF: |
499 | { | |
500 | s64 l = left->diff.wdiff; | |
501 | s64 r = right->diff.wdiff; | |
502 | ||
503 | return r - l; | |
504 | } | |
96c47f19 JO |
505 | default: |
506 | BUG_ON(1); | |
507 | } | |
508 | ||
509 | return 0; | |
510 | } | |
511 | ||
5f3f8d3b JO |
512 | static int64_t |
513 | hist_entry__cmp_compute(struct hist_entry *left, struct hist_entry *right, | |
514 | int c) | |
515 | { | |
516 | bool pairs_left = hist_entry__has_pairs(left); | |
517 | bool pairs_right = hist_entry__has_pairs(right); | |
518 | struct hist_entry *p_right, *p_left; | |
519 | ||
520 | if (!pairs_left && !pairs_right) | |
521 | return 0; | |
522 | ||
523 | if (!pairs_left || !pairs_right) | |
524 | return pairs_left ? -1 : 1; | |
525 | ||
526 | p_left = get_pair_data(left, &data__files[sort_compute]); | |
527 | p_right = get_pair_data(right, &data__files[sort_compute]); | |
528 | ||
529 | if (!p_left && !p_right) | |
530 | return 0; | |
531 | ||
532 | if (!p_left || !p_right) | |
533 | return p_left ? -1 : 1; | |
534 | ||
535 | /* | |
536 | * We have 2 entries of same kind, let's | |
537 | * make the data comparison. | |
538 | */ | |
539 | return __hist_entry__cmp_compute(p_left, p_right, c); | |
540 | } | |
541 | ||
96c47f19 JO |
542 | static void insert_hist_entry_by_compute(struct rb_root *root, |
543 | struct hist_entry *he, | |
544 | int c) | |
545 | { | |
546 | struct rb_node **p = &root->rb_node; | |
547 | struct rb_node *parent = NULL; | |
548 | struct hist_entry *iter; | |
549 | ||
550 | while (*p != NULL) { | |
551 | parent = *p; | |
552 | iter = rb_entry(parent, struct hist_entry, rb_node); | |
553 | if (hist_entry__cmp_compute(he, iter, c) < 0) | |
554 | p = &(*p)->rb_left; | |
555 | else | |
556 | p = &(*p)->rb_right; | |
557 | } | |
558 | ||
559 | rb_link_node(&he->rb_node, parent, p); | |
560 | rb_insert_color(&he->rb_node, root); | |
561 | } | |
562 | ||
563 | static void hists__compute_resort(struct hists *hists) | |
564 | { | |
66f97ed3 NK |
565 | struct rb_root *root; |
566 | struct rb_node *next; | |
567 | ||
568 | if (sort__need_collapse) | |
569 | root = &hists->entries_collapsed; | |
570 | else | |
571 | root = hists->entries_in; | |
572 | ||
573 | hists->entries = RB_ROOT; | |
574 | next = rb_first(root); | |
575 | ||
576 | hists->nr_entries = 0; | |
8810f6ce | 577 | hists->nr_non_filtered_entries = 0; |
66f97ed3 | 578 | hists->stats.total_period = 0; |
8810f6ce | 579 | hists->stats.total_non_filtered_period = 0; |
66f97ed3 | 580 | hists__reset_col_len(hists); |
96c47f19 JO |
581 | |
582 | while (next != NULL) { | |
66f97ed3 | 583 | struct hist_entry *he; |
96c47f19 | 584 | |
66f97ed3 NK |
585 | he = rb_entry(next, struct hist_entry, rb_node_in); |
586 | next = rb_next(&he->rb_node_in); | |
96c47f19 | 587 | |
66f97ed3 | 588 | insert_hist_entry_by_compute(&hists->entries, he, compute); |
6263835a | 589 | hists__inc_stats(hists, he); |
96c47f19 | 590 | } |
96c47f19 JO |
591 | } |
592 | ||
22aeb7f5 | 593 | static void hists__process(struct hists *hists) |
a06d143e | 594 | { |
a06d143e | 595 | if (show_baseline_only) |
22aeb7f5 | 596 | hists__baseline_only(hists); |
a06d143e | 597 | |
96c47f19 | 598 | if (sort_compute) { |
22aeb7f5 JO |
599 | hists__precompute(hists); |
600 | hists__compute_resort(hists); | |
66f97ed3 | 601 | } else { |
22aeb7f5 | 602 | hists__output_resort(hists); |
96c47f19 JO |
603 | } |
604 | ||
22aeb7f5 | 605 | hists__fprintf(hists, true, 0, 0, 0, stdout); |
a06d143e JO |
606 | } |
607 | ||
1d81c7fc JO |
608 | static void data__fprintf(void) |
609 | { | |
610 | struct data__file *d; | |
611 | int i; | |
612 | ||
613 | fprintf(stdout, "# Data files:\n"); | |
614 | ||
615 | data__for_each_file(i, d) | |
616 | fprintf(stdout, "# [%d] %s %s\n", | |
f5fc1412 | 617 | d->idx, d->file.path, |
1d81c7fc JO |
618 | !d->idx ? "(Baseline)" : ""); |
619 | ||
620 | fprintf(stdout, "#\n"); | |
621 | } | |
622 | ||
ec308426 | 623 | static void data_process(void) |
86a9eee0 | 624 | { |
22aeb7f5 JO |
625 | struct perf_evlist *evlist_base = data__files[0].session->evlist; |
626 | struct perf_evsel *evsel_base; | |
863e451f | 627 | bool first = true; |
86a9eee0 | 628 | |
0050f7aa | 629 | evlist__for_each(evlist_base, evsel_base) { |
22aeb7f5 JO |
630 | struct data__file *d; |
631 | int i; | |
86a9eee0 | 632 | |
22aeb7f5 JO |
633 | data__for_each_file_new(i, d) { |
634 | struct perf_evlist *evlist = d->session->evlist; | |
635 | struct perf_evsel *evsel; | |
636 | ||
637 | evsel = evsel_match(evsel_base, evlist); | |
638 | if (!evsel) | |
639 | continue; | |
640 | ||
641 | d->hists = &evsel->hists; | |
642 | ||
643 | hists__match(&evsel_base->hists, &evsel->hists); | |
644 | ||
645 | if (!show_baseline_only) | |
646 | hists__link(&evsel_base->hists, | |
647 | &evsel->hists); | |
648 | } | |
86a9eee0 | 649 | |
ec308426 | 650 | fprintf(stdout, "%s# Event '%s'\n#\n", first ? "" : "\n", |
22aeb7f5 | 651 | perf_evsel__name(evsel_base)); |
863e451f | 652 | |
ec308426 | 653 | first = false; |
863e451f | 654 | |
22aeb7f5 | 655 | if (verbose || data__files_cnt > 2) |
1d81c7fc JO |
656 | data__fprintf(); |
657 | ||
22aeb7f5 | 658 | hists__process(&evsel_base->hists); |
ec308426 JO |
659 | } |
660 | } | |
863e451f | 661 | |
c818b498 JO |
662 | static void data__free(struct data__file *d) |
663 | { | |
664 | int col; | |
665 | ||
666 | for (col = 0; col < PERF_HPP_DIFF__MAX_INDEX; col++) { | |
667 | struct diff_hpp_fmt *fmt = &d->fmt[col]; | |
668 | ||
74cf249d | 669 | zfree(&fmt->header); |
c818b498 JO |
670 | } |
671 | } | |
672 | ||
ec308426 JO |
673 | static int __cmd_diff(void) |
674 | { | |
675 | struct data__file *d; | |
676 | int ret = -EINVAL, i; | |
677 | ||
678 | data__for_each_file(i, d) { | |
f5fc1412 | 679 | d->session = perf_session__new(&d->file, false, &tool); |
ec308426 | 680 | if (!d->session) { |
f5fc1412 | 681 | pr_err("Failed to open %s\n", d->file.path); |
ec308426 JO |
682 | ret = -ENOMEM; |
683 | goto out_delete; | |
684 | } | |
863e451f | 685 | |
ec308426 JO |
686 | ret = perf_session__process_events(d->session, &tool); |
687 | if (ret) { | |
f5fc1412 | 688 | pr_err("Failed to process %s\n", d->file.path); |
ec308426 JO |
689 | goto out_delete; |
690 | } | |
863e451f | 691 | |
ec308426 JO |
692 | perf_evlist__collapse_resort(d->session->evlist); |
693 | } | |
694 | ||
695 | data_process(); | |
863e451f | 696 | |
ec308426 JO |
697 | out_delete: |
698 | data__for_each_file(i, d) { | |
699 | if (d->session) | |
700 | perf_session__delete(d->session); | |
c818b498 JO |
701 | |
702 | data__free(d); | |
863e451f | 703 | } |
9c443dfd | 704 | |
ec308426 | 705 | free(data__files); |
86a9eee0 ACM |
706 | return ret; |
707 | } | |
708 | ||
0422a4fc | 709 | static const char * const diff_usage[] = { |
86a9eee0 | 710 | "perf diff [<options>] [old_file] [new_file]", |
0422a4fc | 711 | NULL, |
86a9eee0 ACM |
712 | }; |
713 | ||
714 | static const struct option options[] = { | |
c0555642 | 715 | OPT_INCR('v', "verbose", &verbose, |
86a9eee0 | 716 | "be more verbose (show symbol address, etc)"), |
a06d143e JO |
717 | OPT_BOOLEAN('b', "baseline-only", &show_baseline_only, |
718 | "Show only items with match in baseline"), | |
81d5f958 JO |
719 | OPT_CALLBACK('c', "compute", &compute, |
720 | "delta,ratio,wdiff:w1,w2 (default delta)", | |
7aaf6b35 JO |
721 | "Entries differential computation selection", |
722 | setup_compute), | |
61949b21 JO |
723 | OPT_BOOLEAN('p', "period", &show_period, |
724 | "Show period values."), | |
ed279da2 JO |
725 | OPT_BOOLEAN('F', "formula", &show_formula, |
726 | "Show formula."), | |
86a9eee0 ACM |
727 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
728 | "dump raw trace in ASCII"), | |
729 | OPT_BOOLEAN('f', "force", &force, "don't complain, do it"), | |
730 | OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules, | |
731 | "load module symbols - WARNING: use only with -k and LIVE kernel"), | |
c410a338 ACM |
732 | OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]", |
733 | "only consider symbols in these dsos"), | |
734 | OPT_STRING('C', "comms", &symbol_conf.comm_list_str, "comm[,comm...]", | |
735 | "only consider symbols in these comms"), | |
736 | OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]", | |
737 | "only consider these symbols"), | |
c351c281 ACM |
738 | OPT_STRING('s', "sort", &sort_order, "key[,key2...]", |
739 | "sort by key(s): pid, comm, dso, symbol, parent"), | |
740 | OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator", | |
741 | "separator for columns, no spaces will be added between " | |
742 | "columns '.' is reserved."), | |
ec5761ea DA |
743 | OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory", |
744 | "Look for files with symbols relative to this directory"), | |
5f3f8d3b | 745 | OPT_UINTEGER('o', "order", &sort_compute, "Specify compute sorting."), |
8810f6ce NK |
746 | OPT_CALLBACK(0, "percentage", NULL, "relative|absolute", |
747 | "How to display percentage of filtered entries", parse_filter_percentage), | |
86a9eee0 ACM |
748 | OPT_END() |
749 | }; | |
750 | ||
345dc0b4 | 751 | static double baseline_percent(struct hist_entry *he) |
1d77822e | 752 | { |
8810f6ce NK |
753 | u64 total = hists__total_period(he->hists); |
754 | ||
755 | return 100.0 * he->stat.period / total; | |
345dc0b4 | 756 | } |
7aaf6b35 | 757 | |
345dc0b4 JO |
758 | static int hpp__color_baseline(struct perf_hpp_fmt *fmt, |
759 | struct perf_hpp *hpp, struct hist_entry *he) | |
760 | { | |
761 | struct diff_hpp_fmt *dfmt = | |
762 | container_of(fmt, struct diff_hpp_fmt, fmt); | |
763 | double percent = baseline_percent(he); | |
764 | char pfmt[20] = " "; | |
765 | ||
766 | if (!he->dummy) { | |
767 | scnprintf(pfmt, 20, "%%%d.2f%%%%", dfmt->header_width - 1); | |
768 | return percent_color_snprintf(hpp->buf, hpp->size, | |
769 | pfmt, percent); | |
770 | } else | |
771 | return scnprintf(hpp->buf, hpp->size, "%*s", | |
772 | dfmt->header_width, pfmt); | |
773 | } | |
774 | ||
775 | static int hpp__entry_baseline(struct hist_entry *he, char *buf, size_t size) | |
776 | { | |
777 | double percent = baseline_percent(he); | |
778 | const char *fmt = symbol_conf.field_sep ? "%.2f" : "%6.2f%%"; | |
779 | int ret = 0; | |
780 | ||
781 | if (!he->dummy) | |
782 | ret = scnprintf(buf, size, fmt, percent); | |
783 | ||
784 | return ret; | |
785 | } | |
786 | ||
01f10bc8 RR |
787 | static int __hpp__color_compare(struct perf_hpp_fmt *fmt, |
788 | struct perf_hpp *hpp, struct hist_entry *he, | |
789 | int comparison_method) | |
790 | { | |
791 | struct diff_hpp_fmt *dfmt = | |
792 | container_of(fmt, struct diff_hpp_fmt, fmt); | |
793 | struct hist_entry *pair = get_pair_fmt(he, dfmt); | |
794 | double diff; | |
a5846e21 | 795 | s64 wdiff; |
01f10bc8 RR |
796 | char pfmt[20] = " "; |
797 | ||
798 | if (!pair) | |
799 | goto dummy_print; | |
800 | ||
801 | switch (comparison_method) { | |
802 | case COMPUTE_DELTA: | |
803 | if (pair->diff.computed) | |
804 | diff = pair->diff.period_ratio_delta; | |
805 | else | |
806 | diff = compute_delta(he, pair); | |
807 | ||
808 | if (fabs(diff) < 0.01) | |
809 | goto dummy_print; | |
810 | scnprintf(pfmt, 20, "%%%+d.2f%%%%", dfmt->header_width - 1); | |
811 | return percent_color_snprintf(hpp->buf, hpp->size, | |
812 | pfmt, diff); | |
1f513b2c RR |
813 | case COMPUTE_RATIO: |
814 | if (he->dummy) | |
815 | goto dummy_print; | |
816 | if (pair->diff.computed) | |
817 | diff = pair->diff.period_ratio; | |
818 | else | |
819 | diff = compute_ratio(he, pair); | |
820 | ||
821 | scnprintf(pfmt, 20, "%%%d.6f", dfmt->header_width); | |
822 | return value_color_snprintf(hpp->buf, hpp->size, | |
823 | pfmt, diff); | |
a5846e21 RR |
824 | case COMPUTE_WEIGHTED_DIFF: |
825 | if (he->dummy) | |
826 | goto dummy_print; | |
827 | if (pair->diff.computed) | |
828 | wdiff = pair->diff.wdiff; | |
829 | else | |
830 | wdiff = compute_wdiff(he, pair); | |
831 | ||
832 | scnprintf(pfmt, 20, "%%14ld", dfmt->header_width); | |
833 | return color_snprintf(hpp->buf, hpp->size, | |
834 | get_percent_color(wdiff), | |
835 | pfmt, wdiff); | |
01f10bc8 RR |
836 | default: |
837 | BUG_ON(1); | |
838 | } | |
839 | dummy_print: | |
840 | return scnprintf(hpp->buf, hpp->size, "%*s", | |
841 | dfmt->header_width, pfmt); | |
842 | } | |
843 | ||
844 | static int hpp__color_delta(struct perf_hpp_fmt *fmt, | |
845 | struct perf_hpp *hpp, struct hist_entry *he) | |
846 | { | |
847 | return __hpp__color_compare(fmt, hpp, he, COMPUTE_DELTA); | |
848 | } | |
849 | ||
1f513b2c RR |
850 | static int hpp__color_ratio(struct perf_hpp_fmt *fmt, |
851 | struct perf_hpp *hpp, struct hist_entry *he) | |
852 | { | |
853 | return __hpp__color_compare(fmt, hpp, he, COMPUTE_RATIO); | |
854 | } | |
855 | ||
a5846e21 RR |
856 | static int hpp__color_wdiff(struct perf_hpp_fmt *fmt, |
857 | struct perf_hpp *hpp, struct hist_entry *he) | |
858 | { | |
859 | return __hpp__color_compare(fmt, hpp, he, COMPUTE_WEIGHTED_DIFF); | |
860 | } | |
861 | ||
345dc0b4 JO |
862 | static void |
863 | hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size) | |
864 | { | |
865 | switch (idx) { | |
866 | case PERF_HPP_DIFF__PERIOD_BASELINE: | |
867 | scnprintf(buf, size, "%" PRIu64, he->stat.period); | |
7aaf6b35 | 868 | break; |
345dc0b4 JO |
869 | |
870 | default: | |
81d5f958 | 871 | break; |
345dc0b4 JO |
872 | } |
873 | } | |
874 | ||
875 | static void | |
876 | hpp__entry_pair(struct hist_entry *he, struct hist_entry *pair, | |
877 | int idx, char *buf, size_t size) | |
878 | { | |
879 | double diff; | |
880 | double ratio; | |
881 | s64 wdiff; | |
882 | ||
883 | switch (idx) { | |
884 | case PERF_HPP_DIFF__DELTA: | |
885 | if (pair->diff.computed) | |
886 | diff = pair->diff.period_ratio_delta; | |
887 | else | |
ef358e6d | 888 | diff = compute_delta(he, pair); |
345dc0b4 JO |
889 | |
890 | if (fabs(diff) >= 0.01) | |
891 | scnprintf(buf, size, "%+4.2F%%", diff); | |
892 | break; | |
893 | ||
894 | case PERF_HPP_DIFF__RATIO: | |
895 | /* No point for ratio number if we are dummy.. */ | |
896 | if (he->dummy) | |
897 | break; | |
898 | ||
899 | if (pair->diff.computed) | |
900 | ratio = pair->diff.period_ratio; | |
901 | else | |
ef358e6d | 902 | ratio = compute_ratio(he, pair); |
345dc0b4 JO |
903 | |
904 | if (ratio > 0.0) | |
905 | scnprintf(buf, size, "%14.6F", ratio); | |
906 | break; | |
907 | ||
908 | case PERF_HPP_DIFF__WEIGHTED_DIFF: | |
909 | /* No point for wdiff number if we are dummy.. */ | |
910 | if (he->dummy) | |
911 | break; | |
912 | ||
913 | if (pair->diff.computed) | |
914 | wdiff = pair->diff.wdiff; | |
915 | else | |
ef358e6d | 916 | wdiff = compute_wdiff(he, pair); |
345dc0b4 JO |
917 | |
918 | if (wdiff != 0) | |
919 | scnprintf(buf, size, "%14ld", wdiff); | |
920 | break; | |
921 | ||
922 | case PERF_HPP_DIFF__FORMULA: | |
ef358e6d | 923 | formula_fprintf(he, pair, buf, size); |
7aaf6b35 | 924 | break; |
345dc0b4 JO |
925 | |
926 | case PERF_HPP_DIFF__PERIOD: | |
927 | scnprintf(buf, size, "%" PRIu64, pair->stat.period); | |
928 | break; | |
929 | ||
7aaf6b35 JO |
930 | default: |
931 | BUG_ON(1); | |
932 | }; | |
345dc0b4 JO |
933 | } |
934 | ||
935 | static void | |
22aeb7f5 JO |
936 | __hpp__entry_global(struct hist_entry *he, struct diff_hpp_fmt *dfmt, |
937 | char *buf, size_t size) | |
345dc0b4 | 938 | { |
5f3f8d3b | 939 | struct hist_entry *pair = get_pair_fmt(he, dfmt); |
22aeb7f5 | 940 | int idx = dfmt->idx; |
345dc0b4 JO |
941 | |
942 | /* baseline is special */ | |
943 | if (idx == PERF_HPP_DIFF__BASELINE) | |
944 | hpp__entry_baseline(he, buf, size); | |
945 | else { | |
946 | if (pair) | |
947 | hpp__entry_pair(he, pair, idx, buf, size); | |
948 | else | |
949 | hpp__entry_unpair(he, idx, buf, size); | |
950 | } | |
951 | } | |
952 | ||
953 | static int hpp__entry_global(struct perf_hpp_fmt *_fmt, struct perf_hpp *hpp, | |
954 | struct hist_entry *he) | |
955 | { | |
956 | struct diff_hpp_fmt *dfmt = | |
957 | container_of(_fmt, struct diff_hpp_fmt, fmt); | |
958 | char buf[MAX_COL_WIDTH] = " "; | |
959 | ||
22aeb7f5 | 960 | __hpp__entry_global(he, dfmt, buf, MAX_COL_WIDTH); |
345dc0b4 JO |
961 | |
962 | if (symbol_conf.field_sep) | |
963 | return scnprintf(hpp->buf, hpp->size, "%s", buf); | |
964 | else | |
965 | return scnprintf(hpp->buf, hpp->size, "%*s", | |
966 | dfmt->header_width, buf); | |
967 | } | |
968 | ||
94a0793d NK |
969 | static int hpp__header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, |
970 | struct perf_evsel *evsel __maybe_unused) | |
345dc0b4 JO |
971 | { |
972 | struct diff_hpp_fmt *dfmt = | |
973 | container_of(fmt, struct diff_hpp_fmt, fmt); | |
974 | ||
975 | BUG_ON(!dfmt->header); | |
976 | return scnprintf(hpp->buf, hpp->size, dfmt->header); | |
977 | } | |
978 | ||
979 | static int hpp__width(struct perf_hpp_fmt *fmt, | |
94a0793d NK |
980 | struct perf_hpp *hpp __maybe_unused, |
981 | struct perf_evsel *evsel __maybe_unused) | |
345dc0b4 JO |
982 | { |
983 | struct diff_hpp_fmt *dfmt = | |
984 | container_of(fmt, struct diff_hpp_fmt, fmt); | |
985 | ||
986 | BUG_ON(dfmt->header_width <= 0); | |
987 | return dfmt->header_width; | |
988 | } | |
989 | ||
22aeb7f5 | 990 | static void init_header(struct data__file *d, struct diff_hpp_fmt *dfmt) |
345dc0b4 JO |
991 | { |
992 | #define MAX_HEADER_NAME 100 | |
993 | char buf_indent[MAX_HEADER_NAME]; | |
994 | char buf[MAX_HEADER_NAME]; | |
995 | const char *header = NULL; | |
996 | int width = 0; | |
997 | ||
998 | BUG_ON(dfmt->idx >= PERF_HPP_DIFF__MAX_INDEX); | |
999 | header = columns[dfmt->idx].name; | |
1000 | width = columns[dfmt->idx].width; | |
1001 | ||
1002 | /* Only our defined HPP fmts should appear here. */ | |
1003 | BUG_ON(!header); | |
1004 | ||
22aeb7f5 JO |
1005 | if (data__files_cnt > 2) |
1006 | scnprintf(buf, MAX_HEADER_NAME, "%s/%d", header, d->idx); | |
1007 | ||
345dc0b4 JO |
1008 | #define NAME (data__files_cnt > 2 ? buf : header) |
1009 | dfmt->header_width = width; | |
1010 | width = (int) strlen(NAME); | |
1011 | if (dfmt->header_width < width) | |
1012 | dfmt->header_width = width; | |
1013 | ||
1014 | scnprintf(buf_indent, MAX_HEADER_NAME, "%*s", | |
1015 | dfmt->header_width, NAME); | |
1016 | ||
1017 | dfmt->header = strdup(buf_indent); | |
1018 | #undef MAX_HEADER_NAME | |
1019 | #undef NAME | |
1020 | } | |
1021 | ||
c818b498 | 1022 | static void data__hpp_register(struct data__file *d, int idx) |
345dc0b4 | 1023 | { |
c818b498 JO |
1024 | struct diff_hpp_fmt *dfmt = &d->fmt[idx]; |
1025 | struct perf_hpp_fmt *fmt = &dfmt->fmt; | |
1026 | ||
1027 | dfmt->idx = idx; | |
1028 | ||
1029 | fmt->header = hpp__header; | |
1030 | fmt->width = hpp__width; | |
1031 | fmt->entry = hpp__entry_global; | |
1032 | ||
1033 | /* TODO more colors */ | |
01f10bc8 RR |
1034 | switch (idx) { |
1035 | case PERF_HPP_DIFF__BASELINE: | |
c818b498 | 1036 | fmt->color = hpp__color_baseline; |
01f10bc8 RR |
1037 | break; |
1038 | case PERF_HPP_DIFF__DELTA: | |
1039 | fmt->color = hpp__color_delta; | |
1040 | break; | |
1f513b2c RR |
1041 | case PERF_HPP_DIFF__RATIO: |
1042 | fmt->color = hpp__color_ratio; | |
1043 | break; | |
a5846e21 RR |
1044 | case PERF_HPP_DIFF__WEIGHTED_DIFF: |
1045 | fmt->color = hpp__color_wdiff; | |
1046 | break; | |
01f10bc8 RR |
1047 | default: |
1048 | break; | |
1049 | } | |
345dc0b4 | 1050 | |
22aeb7f5 | 1051 | init_header(d, dfmt); |
c818b498 | 1052 | perf_hpp__column_register(fmt); |
345dc0b4 JO |
1053 | } |
1054 | ||
1055 | static void ui_init(void) | |
1056 | { | |
c818b498 JO |
1057 | struct data__file *d; |
1058 | int i; | |
1059 | ||
1060 | data__for_each_file(i, d) { | |
1061 | ||
1062 | /* | |
1063 | * Baseline or compute realted columns: | |
1064 | * | |
1065 | * PERF_HPP_DIFF__BASELINE | |
1066 | * PERF_HPP_DIFF__DELTA | |
1067 | * PERF_HPP_DIFF__RATIO | |
1068 | * PERF_HPP_DIFF__WEIGHTED_DIFF | |
1069 | */ | |
1070 | data__hpp_register(d, i ? compute_2_hpp[compute] : | |
1071 | PERF_HPP_DIFF__BASELINE); | |
1d77822e | 1072 | |
c818b498 JO |
1073 | /* |
1074 | * And the rest: | |
1075 | * | |
1076 | * PERF_HPP_DIFF__FORMULA | |
1077 | * PERF_HPP_DIFF__PERIOD | |
1078 | * PERF_HPP_DIFF__PERIOD_BASELINE | |
1079 | */ | |
1080 | if (show_formula && i) | |
1081 | data__hpp_register(d, PERF_HPP_DIFF__FORMULA); | |
ed279da2 | 1082 | |
c818b498 JO |
1083 | if (show_period) |
1084 | data__hpp_register(d, i ? PERF_HPP_DIFF__PERIOD : | |
1085 | PERF_HPP_DIFF__PERIOD_BASELINE); | |
61949b21 | 1086 | } |
1d77822e JO |
1087 | } |
1088 | ||
ec308426 | 1089 | static int data_init(int argc, const char **argv) |
86a9eee0 | 1090 | { |
ec308426 JO |
1091 | struct data__file *d; |
1092 | static const char *defaults[] = { | |
1093 | "perf.data.old", | |
1094 | "perf.data", | |
1095 | }; | |
22aeb7f5 | 1096 | bool use_default = true; |
ec308426 JO |
1097 | int i; |
1098 | ||
1099 | data__files_cnt = 2; | |
1100 | ||
86a9eee0 | 1101 | if (argc) { |
22aeb7f5 | 1102 | if (argc == 1) |
ec308426 | 1103 | defaults[1] = argv[0]; |
22aeb7f5 JO |
1104 | else { |
1105 | data__files_cnt = argc; | |
1106 | use_default = false; | |
1107 | } | |
d8d9608f | 1108 | } else if (perf_guest) { |
ec308426 JO |
1109 | defaults[0] = "perf.data.host"; |
1110 | defaults[1] = "perf.data.guest"; | |
86a9eee0 ACM |
1111 | } |
1112 | ||
5f3f8d3b JO |
1113 | if (sort_compute >= (unsigned int) data__files_cnt) { |
1114 | pr_err("Order option out of limit.\n"); | |
1115 | return -EINVAL; | |
1116 | } | |
1117 | ||
ec308426 JO |
1118 | data__files = zalloc(sizeof(*data__files) * data__files_cnt); |
1119 | if (!data__files) | |
1120 | return -ENOMEM; | |
1121 | ||
1122 | data__for_each_file(i, d) { | |
f5fc1412 JO |
1123 | struct perf_data_file *file = &d->file; |
1124 | ||
1125 | file->path = use_default ? defaults[i] : argv[i]; | |
1126 | file->mode = PERF_DATA_MODE_READ, | |
1127 | file->force = force, | |
1128 | ||
ec308426 JO |
1129 | d->idx = i; |
1130 | } | |
1131 | ||
1132 | return 0; | |
1133 | } | |
1134 | ||
1135 | int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused) | |
1136 | { | |
0b93da17 NK |
1137 | perf_config(perf_default_config, NULL); |
1138 | ||
ec308426 JO |
1139 | sort_order = diff__default_sort_order; |
1140 | argc = parse_options(argc, argv, options, diff_usage, 0); | |
1141 | ||
655000e7 ACM |
1142 | if (symbol__init() < 0) |
1143 | return -1; | |
1144 | ||
ec308426 JO |
1145 | if (data_init(argc, argv) < 0) |
1146 | return -1; | |
1147 | ||
1d77822e JO |
1148 | ui_init(); |
1149 | ||
55309985 NK |
1150 | if (setup_sorting() < 0) |
1151 | usage_with_options(diff_usage, options); | |
1152 | ||
86a9eee0 | 1153 | setup_pager(); |
c351c281 | 1154 | |
08e71542 | 1155 | sort__setup_elide(NULL); |
c351c281 | 1156 | |
86a9eee0 ACM |
1157 | return __cmd_diff(); |
1158 | } |