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Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / tools / perf / util / hist.c
blobfff134565801669e8a64dfa730408d795f6d1816
1 // SPDX-License-Identifier: GPL-2.0
2 #include "callchain.h"
3 #include "debug.h"
4 #include "dso.h"
5 #include "build-id.h"
6 #include "hist.h"
7 #include "kvm-stat.h"
8 #include "map.h"
9 #include "map_symbol.h"
10 #include "branch.h"
11 #include "mem-events.h"
12 #include "mem-info.h"
13 #include "session.h"
14 #include "namespaces.h"
15 #include "cgroup.h"
16 #include "sort.h"
17 #include "units.h"
18 #include "evlist.h"
19 #include "evsel.h"
20 #include "annotate.h"
21 #include "srcline.h"
22 #include "symbol.h"
23 #include "thread.h"
24 #include "block-info.h"
25 #include "ui/progress.h"
26 #include <errno.h>
27 #include <math.h>
28 #include <inttypes.h>
29 #include <sys/param.h>
30 #include <linux/rbtree.h>
31 #include <linux/string.h>
32 #include <linux/time64.h>
33 #include <linux/zalloc.h>
34
35 static bool hists__filter_entry_by_dso(struct hists *hists,
36 struct hist_entry *he);
37 static bool hists__filter_entry_by_thread(struct hists *hists,
38 struct hist_entry *he);
39 static bool hists__filter_entry_by_symbol(struct hists *hists,
40 struct hist_entry *he);
41 static bool hists__filter_entry_by_socket(struct hists *hists,
42 struct hist_entry *he);
43
44 u16 hists__col_len(struct hists *hists, enum hist_column col)
45 {
46 return hists->col_len[col];
47 }
48
49 void hists__set_col_len(struct hists *hists, enum hist_column col, u16 len)
50 {
51 hists->col_len[col] = len;
52 }
53
54 bool hists__new_col_len(struct hists *hists, enum hist_column col, u16 len)
55 {
56 if (len > hists__col_len(hists, col)) {
57 hists__set_col_len(hists, col, len);
58 return true;
59 }
60 return false;
61 }
62
63 void hists__reset_col_len(struct hists *hists)
64 {
65 enum hist_column col;
66
67 for (col = 0; col < HISTC_NR_COLS; ++col)
68 hists__set_col_len(hists, col, 0);
69 }
70
71 static void hists__set_unres_dso_col_len(struct hists *hists, int dso)
72 {
73 const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
74
75 if (hists__col_len(hists, dso) < unresolved_col_width &&
76 !symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
77 !symbol_conf.dso_list)
78 hists__set_col_len(hists, dso, unresolved_col_width);
79 }
80
81 void hists__calc_col_len(struct hists *hists, struct hist_entry *h)
82 {
83 const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
84 int symlen;
85 u16 len;
86
87 if (h->block_info)
88 return;
89 /*
90 * +4 accounts for '[x] ' priv level info
91 * +2 accounts for 0x prefix on raw addresses
92 * +3 accounts for ' y ' symtab origin info
93 */
94 if (h->ms.sym) {
95 symlen = h->ms.sym->namelen + 4;
96 if (verbose > 0)
97 symlen += BITS_PER_LONG / 4 + 2 + 3;
98 hists__new_col_len(hists, HISTC_SYMBOL, symlen);
99 } else {
100 symlen = unresolved_col_width + 4 + 2;
101 hists__new_col_len(hists, HISTC_SYMBOL, symlen);
102 hists__set_unres_dso_col_len(hists, HISTC_DSO);
103 }
104
105 len = thread__comm_len(h->thread);
106 if (hists__new_col_len(hists, HISTC_COMM, len))
107 hists__set_col_len(hists, HISTC_THREAD, len + 8);
108
109 if (h->ms.map) {
110 len = dso__name_len(map__dso(h->ms.map));
111 hists__new_col_len(hists, HISTC_DSO, len);
112 }
113
114 if (h->parent)
115 hists__new_col_len(hists, HISTC_PARENT, h->parent->namelen);
116
117 if (h->branch_info) {
118 if (h->branch_info->from.ms.sym) {
119 symlen = (int)h->branch_info->from.ms.sym->namelen + 4;
120 if (verbose > 0)
121 symlen += BITS_PER_LONG / 4 + 2 + 3;
122 hists__new_col_len(hists, HISTC_SYMBOL_FROM, symlen);
123
124 symlen = dso__name_len(map__dso(h->branch_info->from.ms.map));
125 hists__new_col_len(hists, HISTC_DSO_FROM, symlen);
126 } else {
127 symlen = unresolved_col_width + 4 + 2;
128 hists__new_col_len(hists, HISTC_SYMBOL_FROM, symlen);
129 hists__new_col_len(hists, HISTC_ADDR_FROM, symlen);
130 hists__set_unres_dso_col_len(hists, HISTC_DSO_FROM);
131 }
132
133 if (h->branch_info->to.ms.sym) {
134 symlen = (int)h->branch_info->to.ms.sym->namelen + 4;
135 if (verbose > 0)
136 symlen += BITS_PER_LONG / 4 + 2 + 3;
137 hists__new_col_len(hists, HISTC_SYMBOL_TO, symlen);
138
139 symlen = dso__name_len(map__dso(h->branch_info->to.ms.map));
140 hists__new_col_len(hists, HISTC_DSO_TO, symlen);
141 } else {
142 symlen = unresolved_col_width + 4 + 2;
143 hists__new_col_len(hists, HISTC_SYMBOL_TO, symlen);
144 hists__new_col_len(hists, HISTC_ADDR_TO, symlen);
145 hists__set_unres_dso_col_len(hists, HISTC_DSO_TO);
146 }
147
148 if (h->branch_info->srcline_from)
149 hists__new_col_len(hists, HISTC_SRCLINE_FROM,
150 strlen(h->branch_info->srcline_from));
151 if (h->branch_info->srcline_to)
152 hists__new_col_len(hists, HISTC_SRCLINE_TO,
153 strlen(h->branch_info->srcline_to));
154 }
155
156 if (h->mem_info) {
157 if (mem_info__daddr(h->mem_info)->ms.sym) {
158 symlen = (int)mem_info__daddr(h->mem_info)->ms.sym->namelen + 4
159 + unresolved_col_width + 2;
160 hists__new_col_len(hists, HISTC_MEM_DADDR_SYMBOL,
161 symlen);
162 hists__new_col_len(hists, HISTC_MEM_DCACHELINE,
163 symlen + 1);
164 } else {
165 symlen = unresolved_col_width + 4 + 2;
166 hists__new_col_len(hists, HISTC_MEM_DADDR_SYMBOL,
167 symlen);
168 hists__new_col_len(hists, HISTC_MEM_DCACHELINE,
169 symlen);
170 }
171
172 if (mem_info__iaddr(h->mem_info)->ms.sym) {
173 symlen = (int)mem_info__iaddr(h->mem_info)->ms.sym->namelen + 4
174 + unresolved_col_width + 2;
175 hists__new_col_len(hists, HISTC_MEM_IADDR_SYMBOL,
176 symlen);
177 } else {
178 symlen = unresolved_col_width + 4 + 2;
179 hists__new_col_len(hists, HISTC_MEM_IADDR_SYMBOL,
180 symlen);
181 }
182
183 if (mem_info__daddr(h->mem_info)->ms.map) {
184 symlen = dso__name_len(map__dso(mem_info__daddr(h->mem_info)->ms.map));
185 hists__new_col_len(hists, HISTC_MEM_DADDR_DSO,
186 symlen);
187 } else {
188 symlen = unresolved_col_width + 4 + 2;
189 hists__set_unres_dso_col_len(hists, HISTC_MEM_DADDR_DSO);
190 }
191
192 hists__new_col_len(hists, HISTC_MEM_PHYS_DADDR,
193 unresolved_col_width + 4 + 2);
194
195 hists__new_col_len(hists, HISTC_MEM_DATA_PAGE_SIZE,
196 unresolved_col_width + 4 + 2);
197
198 } else {
199 symlen = unresolved_col_width + 4 + 2;
200 hists__new_col_len(hists, HISTC_MEM_DADDR_SYMBOL, symlen);
201 hists__new_col_len(hists, HISTC_MEM_IADDR_SYMBOL, symlen);
202 hists__set_unres_dso_col_len(hists, HISTC_MEM_DADDR_DSO);
203 }
204
205 hists__new_col_len(hists, HISTC_CGROUP, 6);
206 hists__new_col_len(hists, HISTC_CGROUP_ID, 20);
207 hists__new_col_len(hists, HISTC_CPU, 3);
208 hists__new_col_len(hists, HISTC_SOCKET, 6);
209 hists__new_col_len(hists, HISTC_MEM_LOCKED, 6);
210 hists__new_col_len(hists, HISTC_MEM_TLB, 22);
211 hists__new_col_len(hists, HISTC_MEM_SNOOP, 12);
212 hists__new_col_len(hists, HISTC_MEM_LVL, 36 + 3);
213 hists__new_col_len(hists, HISTC_LOCAL_WEIGHT, 12);
214 hists__new_col_len(hists, HISTC_GLOBAL_WEIGHT, 12);
215 hists__new_col_len(hists, HISTC_MEM_BLOCKED, 10);
216 hists__new_col_len(hists, HISTC_LOCAL_INS_LAT, 13);
217 hists__new_col_len(hists, HISTC_GLOBAL_INS_LAT, 13);
218 hists__new_col_len(hists, HISTC_LOCAL_P_STAGE_CYC, 13);
219 hists__new_col_len(hists, HISTC_GLOBAL_P_STAGE_CYC, 13);
220 hists__new_col_len(hists, HISTC_ADDR, BITS_PER_LONG / 4 + 2);
221 hists__new_col_len(hists, HISTC_CALLCHAIN_BRANCH_PREDICTED, 9);
222 hists__new_col_len(hists, HISTC_CALLCHAIN_BRANCH_ABORT, 5);
223 hists__new_col_len(hists, HISTC_CALLCHAIN_BRANCH_CYCLES, 6);
224
225 if (symbol_conf.nanosecs)
226 hists__new_col_len(hists, HISTC_TIME, 16);
227 else
228 hists__new_col_len(hists, HISTC_TIME, 12);
229 hists__new_col_len(hists, HISTC_CODE_PAGE_SIZE, 6);
230
231 if (h->srcline) {
232 len = MAX(strlen(h->srcline), strlen(sort_srcline.se_header));
233 hists__new_col_len(hists, HISTC_SRCLINE, len);
234 }
235
236 if (h->srcfile)
237 hists__new_col_len(hists, HISTC_SRCFILE, strlen(h->srcfile));
238
239 if (h->transaction)
240 hists__new_col_len(hists, HISTC_TRANSACTION,
241 hist_entry__transaction_len());
242
243 if (h->trace_output)
244 hists__new_col_len(hists, HISTC_TRACE, strlen(h->trace_output));
245
246 if (h->cgroup) {
247 const char *cgrp_name = "unknown";
248 struct cgroup *cgrp = cgroup__find(maps__machine(h->ms.maps)->env,
249 h->cgroup);
250 if (cgrp != NULL)
251 cgrp_name = cgrp->name;
252
253 hists__new_col_len(hists, HISTC_CGROUP, strlen(cgrp_name));
254 }
255 }
256
257 void hists__output_recalc_col_len(struct hists *hists, int max_rows)
258 {
259 struct rb_node *next = rb_first_cached(&hists->entries);
260 struct hist_entry *n;
261 int row = 0;
262
263 hists__reset_col_len(hists);
264
265 while (next && row++ < max_rows) {
266 n = rb_entry(next, struct hist_entry, rb_node);
267 if (!n->filtered)
268 hists__calc_col_len(hists, n);
269 next = rb_next(&n->rb_node);
270 }
271 }
272
273 static void he_stat__add_cpumode_period(struct he_stat *he_stat,
274 unsigned int cpumode, u64 period)
275 {
276 switch (cpumode) {
277 case PERF_RECORD_MISC_KERNEL:
278 he_stat->period_sys += period;
279 break;
280 case PERF_RECORD_MISC_USER:
281 he_stat->period_us += period;
282 break;
283 case PERF_RECORD_MISC_GUEST_KERNEL:
284 he_stat->period_guest_sys += period;
285 break;
286 case PERF_RECORD_MISC_GUEST_USER:
287 he_stat->period_guest_us += period;
288 break;
289 default:
290 break;
291 }
292 }
293
294 static long hist_time(unsigned long htime)
295 {
296 unsigned long time_quantum = symbol_conf.time_quantum;
297 if (time_quantum)
298 return (htime / time_quantum) * time_quantum;
299 return htime;
300 }
301
302 static void he_stat__add_period(struct he_stat *he_stat, u64 period)
303 {
304 he_stat->period += period;
305 he_stat->nr_events += 1;
306 }
307
308 static void he_stat__add_stat(struct he_stat *dest, struct he_stat *src)
309 {
310 dest->period += src->period;
311 dest->period_sys += src->period_sys;
312 dest->period_us += src->period_us;
313 dest->period_guest_sys += src->period_guest_sys;
314 dest->period_guest_us += src->period_guest_us;
315 dest->weight1 += src->weight1;
316 dest->weight2 += src->weight2;
317 dest->weight3 += src->weight3;
318 dest->nr_events += src->nr_events;
319 }
320
321 static void he_stat__decay(struct he_stat *he_stat)
322 {
323 he_stat->period = (he_stat->period * 7) / 8;
324 he_stat->nr_events = (he_stat->nr_events * 7) / 8;
325 he_stat->weight1 = (he_stat->weight1 * 7) / 8;
326 he_stat->weight2 = (he_stat->weight2 * 7) / 8;
327 he_stat->weight3 = (he_stat->weight3 * 7) / 8;
328 }
329
330 static void hists__delete_entry(struct hists *hists, struct hist_entry *he);
331
332 static bool hists__decay_entry(struct hists *hists, struct hist_entry *he)
333 {
334 u64 prev_period = he->stat.period;
335 u64 diff;
336
337 if (prev_period == 0)
338 return true;
339
340 he_stat__decay(&he->stat);
341 if (symbol_conf.cumulate_callchain)
342 he_stat__decay(he->stat_acc);
343 decay_callchain(he->callchain);
344
345 diff = prev_period - he->stat.period;
346
347 if (!he->depth) {
348 hists->stats.total_period -= diff;
349 if (!he->filtered)
350 hists->stats.total_non_filtered_period -= diff;
351 }
352
353 if (!he->leaf) {
354 struct hist_entry *child;
355 struct rb_node *node = rb_first_cached(&he->hroot_out);
356 while (node) {
357 child = rb_entry(node, struct hist_entry, rb_node);
358 node = rb_next(node);
359
360 if (hists__decay_entry(hists, child))
361 hists__delete_entry(hists, child);
362 }
363 }
364
365 return he->stat.period == 0;
366 }
367
368 static void hists__delete_entry(struct hists *hists, struct hist_entry *he)
369 {
370 struct rb_root_cached *root_in;
371 struct rb_root_cached *root_out;
372
373 if (he->parent_he) {
374 root_in = &he->parent_he->hroot_in;
375 root_out = &he->parent_he->hroot_out;
376 } else {
377 if (hists__has(hists, need_collapse))
378 root_in = &hists->entries_collapsed;
379 else
380 root_in = hists->entries_in;
381 root_out = &hists->entries;
382 }
383
384 rb_erase_cached(&he->rb_node_in, root_in);
385 rb_erase_cached(&he->rb_node, root_out);
386
387 --hists->nr_entries;
388 if (!he->filtered)
389 --hists->nr_non_filtered_entries;
390
391 hist_entry__delete(he);
392 }
393
394 void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel)
395 {
396 struct rb_node *next = rb_first_cached(&hists->entries);
397 struct hist_entry *n;
398
399 while (next) {
400 n = rb_entry(next, struct hist_entry, rb_node);
401 next = rb_next(&n->rb_node);
402 if (((zap_user && n->level == '.') ||
403 (zap_kernel && n->level != '.') ||
404 hists__decay_entry(hists, n))) {
405 hists__delete_entry(hists, n);
406 }
407 }
408 }
409
410 void hists__delete_entries(struct hists *hists)
411 {
412 struct rb_node *next = rb_first_cached(&hists->entries);
413 struct hist_entry *n;
414
415 while (next) {
416 n = rb_entry(next, struct hist_entry, rb_node);
417 next = rb_next(&n->rb_node);
418
419 hists__delete_entry(hists, n);
420 }
421 }
422
423 struct hist_entry *hists__get_entry(struct hists *hists, int idx)
424 {
425 struct rb_node *next = rb_first_cached(&hists->entries);
426 struct hist_entry *n;
427 int i = 0;
428
429 while (next) {
430 n = rb_entry(next, struct hist_entry, rb_node);
431 if (i == idx)
432 return n;
433
434 next = rb_next(&n->rb_node);
435 i++;
436 }
437
438 return NULL;
439 }
440
441 /*
442 * histogram, sorted on item, collects periods
443 */
444
445 static int hist_entry__init(struct hist_entry *he,
446 struct hist_entry *template,
447 bool sample_self,
448 size_t callchain_size)
449 {
450 *he = *template;
451 he->callchain_size = callchain_size;
452
453 if (symbol_conf.cumulate_callchain) {
454 he->stat_acc = malloc(sizeof(he->stat));
455 if (he->stat_acc == NULL)
456 return -ENOMEM;
457 memcpy(he->stat_acc, &he->stat, sizeof(he->stat));
458 if (!sample_self)
459 memset(&he->stat, 0, sizeof(he->stat));
460 }
461
462 he->ms.maps = maps__get(he->ms.maps);
463 he->ms.map = map__get(he->ms.map);
464
465 if (he->branch_info) {
466 /*
467 * This branch info is (a part of) allocated from
468 * sample__resolve_bstack() and will be freed after
469 * adding new entries. So we need to save a copy.
470 */
471 he->branch_info = malloc(sizeof(*he->branch_info));
472 if (he->branch_info == NULL)
473 goto err;
474
475 memcpy(he->branch_info, template->branch_info,
476 sizeof(*he->branch_info));
477
478 he->branch_info->from.ms.maps = maps__get(he->branch_info->from.ms.maps);
479 he->branch_info->from.ms.map = map__get(he->branch_info->from.ms.map);
480 he->branch_info->to.ms.maps = maps__get(he->branch_info->to.ms.maps);
481 he->branch_info->to.ms.map = map__get(he->branch_info->to.ms.map);
482 }
483
484 if (he->mem_info) {
485 he->mem_info = mem_info__clone(template->mem_info);
486 if (he->mem_info == NULL)
487 goto err_infos;
488 }
489
490 if (hist_entry__has_callchains(he) && symbol_conf.use_callchain)
491 callchain_init(he->callchain);
492
493 if (he->raw_data) {
494 he->raw_data = memdup(he->raw_data, he->raw_size);
495 if (he->raw_data == NULL)
496 goto err_infos;
497 }
498
499 if (he->srcline && he->srcline != SRCLINE_UNKNOWN) {
500 he->srcline = strdup(he->srcline);
501 if (he->srcline == NULL)
502 goto err_rawdata;
503 }
504
505 if (symbol_conf.res_sample) {
506 he->res_samples = calloc(symbol_conf.res_sample,
507 sizeof(struct res_sample));
508 if (!he->res_samples)
509 goto err_srcline;
510 }
511
512 INIT_LIST_HEAD(&he->pairs.node);
513 he->thread = thread__get(he->thread);
514 he->hroot_in = RB_ROOT_CACHED;
515 he->hroot_out = RB_ROOT_CACHED;
516
517 if (!symbol_conf.report_hierarchy)
518 he->leaf = true;
519
520 return 0;
521
522 err_srcline:
523 zfree(&he->srcline);
524
525 err_rawdata:
526 zfree(&he->raw_data);
527
528 err_infos:
529 if (he->branch_info) {
530 map_symbol__exit(&he->branch_info->from.ms);
531 map_symbol__exit(&he->branch_info->to.ms);
532 zfree(&he->branch_info);
533 }
534 if (he->mem_info) {
535 map_symbol__exit(&mem_info__iaddr(he->mem_info)->ms);
536 map_symbol__exit(&mem_info__daddr(he->mem_info)->ms);
537 }
538 err:
539 map_symbol__exit(&he->ms);
540 zfree(&he->stat_acc);
541 return -ENOMEM;
542 }
543
544 static void *hist_entry__zalloc(size_t size)
545 {
546 return zalloc(size + sizeof(struct hist_entry));
547 }
548
549 static void hist_entry__free(void *ptr)
550 {
551 free(ptr);
552 }
553
554 static struct hist_entry_ops default_ops = {
555 .new = hist_entry__zalloc,
556 .free = hist_entry__free,
557 };
558
559 static struct hist_entry *hist_entry__new(struct hist_entry *template,
560 bool sample_self)
561 {
562 struct hist_entry_ops *ops = template->ops;
563 size_t callchain_size = 0;
564 struct hist_entry *he;
565 int err = 0;
566
567 if (!ops)
568 ops = template->ops = &default_ops;
569
570 if (symbol_conf.use_callchain)
571 callchain_size = sizeof(struct callchain_root);
572
573 he = ops->new(callchain_size);
574 if (he) {
575 err = hist_entry__init(he, template, sample_self, callchain_size);
576 if (err) {
577 ops->free(he);
578 he = NULL;
579 }
580 }
581 return he;
582 }
583
584 static u8 symbol__parent_filter(const struct symbol *parent)
585 {
586 if (symbol_conf.exclude_other && parent == NULL)
587 return 1 << HIST_FILTER__PARENT;
588 return 0;
589 }
590
591 static void hist_entry__add_callchain_period(struct hist_entry *he, u64 period)
592 {
593 if (!hist_entry__has_callchains(he) || !symbol_conf.use_callchain)
594 return;
595
596 he->hists->callchain_period += period;
597 if (!he->filtered)
598 he->hists->callchain_non_filtered_period += period;
599 }
600
601 static struct hist_entry *hists__findnew_entry(struct hists *hists,
602 struct hist_entry *entry,
603 const struct addr_location *al,
604 bool sample_self)
605 {
606 struct rb_node **p;
607 struct rb_node *parent = NULL;
608 struct hist_entry *he;
609 int64_t cmp;
610 u64 period = entry->stat.period;
611 bool leftmost = true;
612
613 p = &hists->entries_in->rb_root.rb_node;
614
615 while (*p != NULL) {
616 parent = *p;
617 he = rb_entry(parent, struct hist_entry, rb_node_in);
618
619 /*
620 * Make sure that it receives arguments in a same order as
621 * hist_entry__collapse() so that we can use an appropriate
622 * function when searching an entry regardless which sort
623 * keys were used.
624 */
625 cmp = hist_entry__cmp(he, entry);
626 if (!cmp) {
627 if (sample_self) {
628 he_stat__add_stat(&he->stat, &entry->stat);
629 hist_entry__add_callchain_period(he, period);
630 }
631 if (symbol_conf.cumulate_callchain)
632 he_stat__add_period(he->stat_acc, period);
633
634 block_info__delete(entry->block_info);
635
636 kvm_info__zput(entry->kvm_info);
637
638 /* If the map of an existing hist_entry has
639 * become out-of-date due to an exec() or
640 * similar, update it. Otherwise we will
641 * mis-adjust symbol addresses when computing
642 * the history counter to increment.
643 */
644 if (hists__has(hists, sym) && he->ms.map != entry->ms.map) {
645 if (he->ms.sym) {
646 u64 addr = he->ms.sym->start;
647 he->ms.sym = map__find_symbol(entry->ms.map, addr);
648 }
649
650 map__put(he->ms.map);
651 he->ms.map = map__get(entry->ms.map);
652 }
653 goto out;
654 }
655
656 if (cmp < 0)
657 p = &(*p)->rb_left;
658 else {
659 p = &(*p)->rb_right;
660 leftmost = false;
661 }
662 }
663
664 he = hist_entry__new(entry, sample_self);
665 if (!he)
666 return NULL;
667
668 if (sample_self)
669 hist_entry__add_callchain_period(he, period);
670 hists->nr_entries++;
671
672 rb_link_node(&he->rb_node_in, parent, p);
673 rb_insert_color_cached(&he->rb_node_in, hists->entries_in, leftmost);
674 out:
675 if (sample_self)
676 he_stat__add_cpumode_period(&he->stat, al->cpumode, period);
677 if (symbol_conf.cumulate_callchain)
678 he_stat__add_cpumode_period(he->stat_acc, al->cpumode, period);
679 return he;
680 }
681
682 static unsigned random_max(unsigned high)
683 {
684 unsigned thresh = -high % high;
685 for (;;) {
686 unsigned r = random();
687 if (r >= thresh)
688 return r % high;
689 }
690 }
691
692 static void hists__res_sample(struct hist_entry *he, struct perf_sample *sample)
693 {
694 struct res_sample *r;
695 int j;
696
697 if (he->num_res < symbol_conf.res_sample) {
698 j = he->num_res++;
699 } else {
700 j = random_max(symbol_conf.res_sample);
701 }
702 r = &he->res_samples[j];
703 r->time = sample->time;
704 r->cpu = sample->cpu;
705 r->tid = sample->tid;
706 }
707
708 static struct hist_entry*
709 __hists__add_entry(struct hists *hists,
710 struct addr_location *al,
711 struct symbol *sym_parent,
712 struct branch_info *bi,
713 struct mem_info *mi,
714 struct kvm_info *ki,
715 struct block_info *block_info,
716 struct perf_sample *sample,
717 bool sample_self,
718 struct hist_entry_ops *ops)
719 {
720 struct namespaces *ns = thread__namespaces(al->thread);
721 struct hist_entry entry = {
722 .thread = al->thread,
723 .comm = thread__comm(al->thread),
724 .cgroup_id = {
725 .dev = ns ? ns->link_info[CGROUP_NS_INDEX].dev : 0,
726 .ino = ns ? ns->link_info[CGROUP_NS_INDEX].ino : 0,
727 },
728 .cgroup = sample->cgroup,
729 .ms = {
730 .maps = al->maps,
731 .map = al->map,
732 .sym = al->sym,
733 },
734 .srcline = (char *) al->srcline,
735 .socket = al->socket,
736 .cpu = al->cpu,
737 .cpumode = al->cpumode,
738 .ip = al->addr,
739 .level = al->level,
740 .code_page_size = sample->code_page_size,
741 .stat = {
742 .nr_events = 1,
743 .period = sample->period,
744 .weight1 = sample->weight,
745 .weight2 = sample->ins_lat,
746 .weight3 = sample->p_stage_cyc,
747 },
748 .parent = sym_parent,
749 .filtered = symbol__parent_filter(sym_parent) | al->filtered,
750 .hists = hists,
751 .branch_info = bi,
752 .mem_info = mi,
753 .kvm_info = ki,
754 .block_info = block_info,
755 .transaction = sample->transaction,
756 .raw_data = sample->raw_data,
757 .raw_size = sample->raw_size,
758 .ops = ops,
759 .time = hist_time(sample->time),
760 .weight = sample->weight,
761 .ins_lat = sample->ins_lat,
762 .p_stage_cyc = sample->p_stage_cyc,
763 .simd_flags = sample->simd_flags,
764 }, *he = hists__findnew_entry(hists, &entry, al, sample_self);
765
766 if (!hists->has_callchains && he && he->callchain_size != 0)
767 hists->has_callchains = true;
768 if (he && symbol_conf.res_sample)
769 hists__res_sample(he, sample);
770 return he;
771 }
772
773 struct hist_entry *hists__add_entry(struct hists *hists,
774 struct addr_location *al,
775 struct symbol *sym_parent,
776 struct branch_info *bi,
777 struct mem_info *mi,
778 struct kvm_info *ki,
779 struct perf_sample *sample,
780 bool sample_self)
781 {
782 return __hists__add_entry(hists, al, sym_parent, bi, mi, ki, NULL,
783 sample, sample_self, NULL);
784 }
785
786 struct hist_entry *hists__add_entry_ops(struct hists *hists,
787 struct hist_entry_ops *ops,
788 struct addr_location *al,
789 struct symbol *sym_parent,
790 struct branch_info *bi,
791 struct mem_info *mi,
792 struct kvm_info *ki,
793 struct perf_sample *sample,
794 bool sample_self)
795 {
796 return __hists__add_entry(hists, al, sym_parent, bi, mi, ki, NULL,
797 sample, sample_self, ops);
798 }
799
800 struct hist_entry *hists__add_entry_block(struct hists *hists,
801 struct addr_location *al,
802 struct block_info *block_info)
803 {
804 struct hist_entry entry = {
805 .block_info = block_info,
806 .hists = hists,
807 .ms = {
808 .maps = al->maps,
809 .map = al->map,
810 .sym = al->sym,
811 },
812 }, *he = hists__findnew_entry(hists, &entry, al, false);
813
814 return he;
815 }
816
817 static int
818 iter_next_nop_entry(struct hist_entry_iter *iter __maybe_unused,
819 struct addr_location *al __maybe_unused)
820 {
821 return 0;
822 }
823
824 static int
825 iter_add_next_nop_entry(struct hist_entry_iter *iter __maybe_unused,
826 struct addr_location *al __maybe_unused)
827 {
828 return 0;
829 }
830
831 static int
832 iter_prepare_mem_entry(struct hist_entry_iter *iter, struct addr_location *al)
833 {
834 struct perf_sample *sample = iter->sample;
835 struct mem_info *mi;
836
837 mi = sample__resolve_mem(sample, al);
838 if (mi == NULL)
839 return -ENOMEM;
840
841 iter->mi = mi;
842 return 0;
843 }
844
845 static int
846 iter_add_single_mem_entry(struct hist_entry_iter *iter, struct addr_location *al)
847 {
848 u64 cost;
849 struct mem_info *mi = iter->mi;
850 struct hists *hists = evsel__hists(iter->evsel);
851 struct perf_sample *sample = iter->sample;
852 struct hist_entry *he;
853
854 if (mi == NULL)
855 return -EINVAL;
856
857 cost = sample->weight;
858 if (!cost)
859 cost = 1;
860
861 /*
862 * must pass period=weight in order to get the correct
863 * sorting from hists__collapse_resort() which is solely
864 * based on periods. We want sorting be done on nr_events * weight
865 * and this is indirectly achieved by passing period=weight here
866 * and the he_stat__add_period() function.
867 */
868 sample->period = cost;
869
870 he = hists__add_entry(hists, al, iter->parent, NULL, mi, NULL,
871 sample, true);
872 if (!he)
873 return -ENOMEM;
874
875 iter->he = he;
876 return 0;
877 }
878
879 static int
880 iter_finish_mem_entry(struct hist_entry_iter *iter,
881 struct addr_location *al __maybe_unused)
882 {
883 struct evsel *evsel = iter->evsel;
884 struct hists *hists = evsel__hists(evsel);
885 struct hist_entry *he = iter->he;
886 int err = -EINVAL;
887
888 if (he == NULL)
889 goto out;
890
891 hists__inc_nr_samples(hists, he->filtered);
892
893 err = hist_entry__append_callchain(he, iter->sample);
894
895 out:
896 mem_info__zput(iter->mi);
897
898 iter->he = NULL;
899 return err;
900 }
901
902 static int
903 iter_prepare_branch_entry(struct hist_entry_iter *iter, struct addr_location *al)
904 {
905 struct branch_info *bi;
906 struct perf_sample *sample = iter->sample;
907
908 bi = sample__resolve_bstack(sample, al);
909 if (!bi)
910 return -ENOMEM;
911
912 iter->curr = 0;
913 iter->total = sample->branch_stack->nr;
914
915 iter->bi = bi;
916 return 0;
917 }
918
919 static int
920 iter_add_single_branch_entry(struct hist_entry_iter *iter __maybe_unused,
921 struct addr_location *al __maybe_unused)
922 {
923 return 0;
924 }
925
926 static int
927 iter_next_branch_entry(struct hist_entry_iter *iter, struct addr_location *al)
928 {
929 struct branch_info *bi = iter->bi;
930 int i = iter->curr;
931
932 if (bi == NULL)
933 return 0;
934
935 if (iter->curr >= iter->total)
936 return 0;
937
938 maps__put(al->maps);
939 al->maps = maps__get(bi[i].to.ms.maps);
940 map__put(al->map);
941 al->map = map__get(bi[i].to.ms.map);
942 al->sym = bi[i].to.ms.sym;
943 al->addr = bi[i].to.addr;
944 return 1;
945 }
946
947 static int
948 iter_add_next_branch_entry(struct hist_entry_iter *iter, struct addr_location *al)
949 {
950 struct branch_info *bi;
951 struct evsel *evsel = iter->evsel;
952 struct hists *hists = evsel__hists(evsel);
953 struct perf_sample *sample = iter->sample;
954 struct hist_entry *he = NULL;
955 int i = iter->curr;
956 int err = 0;
957
958 bi = iter->bi;
959
960 if (iter->hide_unresolved && !(bi[i].from.ms.sym && bi[i].to.ms.sym))
961 goto out;
962
963 /*
964 * The report shows the percentage of total branches captured
965 * and not events sampled. Thus we use a pseudo period of 1.
966 */
967 sample->period = 1;
968 sample->weight = bi->flags.cycles ? bi->flags.cycles : 1;
969
970 he = hists__add_entry(hists, al, iter->parent, &bi[i], NULL, NULL,
971 sample, true);
972 if (he == NULL)
973 return -ENOMEM;
974
975 hists__inc_nr_samples(hists, he->filtered);
976
977 out:
978 iter->he = he;
979 iter->curr++;
980 return err;
981 }
982
983 static void branch_info__exit(struct branch_info *bi)
984 {
985 map_symbol__exit(&bi->from.ms);
986 map_symbol__exit(&bi->to.ms);
987 zfree_srcline(&bi->srcline_from);
988 zfree_srcline(&bi->srcline_to);
989 }
990
991 static int
992 iter_finish_branch_entry(struct hist_entry_iter *iter,
993 struct addr_location *al __maybe_unused)
994 {
995 for (int i = 0; i < iter->total; i++)
996 branch_info__exit(&iter->bi[i]);
997
998 zfree(&iter->bi);
999 iter->he = NULL;
1000
1001 return iter->curr >= iter->total ? 0 : -1;
1002 }
1003
1004 static int
1005 iter_prepare_normal_entry(struct hist_entry_iter *iter __maybe_unused,
1006 struct addr_location *al __maybe_unused)
1007 {
1008 return 0;
1009 }
1010
1011 static int
1012 iter_add_single_normal_entry(struct hist_entry_iter *iter, struct addr_location *al)
1013 {
1014 struct evsel *evsel = iter->evsel;
1015 struct perf_sample *sample = iter->sample;
1016 struct hist_entry *he;
1017
1018 he = hists__add_entry(evsel__hists(evsel), al, iter->parent, NULL, NULL,
1019 NULL, sample, true);
1020 if (he == NULL)
1021 return -ENOMEM;
1022
1023 iter->he = he;
1024 return 0;
1025 }
1026
1027 static int
1028 iter_finish_normal_entry(struct hist_entry_iter *iter,
1029 struct addr_location *al __maybe_unused)
1030 {
1031 struct hist_entry *he = iter->he;
1032 struct evsel *evsel = iter->evsel;
1033 struct perf_sample *sample = iter->sample;
1034
1035 if (he == NULL)
1036 return 0;
1037
1038 iter->he = NULL;
1039
1040 hists__inc_nr_samples(evsel__hists(evsel), he->filtered);
1041
1042 return hist_entry__append_callchain(he, sample);
1043 }
1044
1045 static int
1046 iter_prepare_cumulative_entry(struct hist_entry_iter *iter,
1047 struct addr_location *al __maybe_unused)
1048 {
1049 struct hist_entry **he_cache;
1050 struct callchain_cursor *cursor = get_tls_callchain_cursor();
1051
1052 if (cursor == NULL)
1053 return -ENOMEM;
1054
1055 callchain_cursor_commit(cursor);
1056
1057 /*
1058 * This is for detecting cycles or recursions so that they're
1059 * cumulated only one time to prevent entries more than 100%
1060 * overhead.
1061 */
1062 he_cache = malloc(sizeof(*he_cache) * (cursor->nr + 1));
1063 if (he_cache == NULL)
1064 return -ENOMEM;
1065
1066 iter->he_cache = he_cache;
1067 iter->curr = 0;
1068
1069 return 0;
1070 }
1071
1072 static int
1073 iter_add_single_cumulative_entry(struct hist_entry_iter *iter,
1074 struct addr_location *al)
1075 {
1076 struct evsel *evsel = iter->evsel;
1077 struct hists *hists = evsel__hists(evsel);
1078 struct perf_sample *sample = iter->sample;
1079 struct hist_entry **he_cache = iter->he_cache;
1080 struct hist_entry *he;
1081 int err = 0;
1082
1083 he = hists__add_entry(hists, al, iter->parent, NULL, NULL, NULL,
1084 sample, true);
1085 if (he == NULL)
1086 return -ENOMEM;
1087
1088 iter->he = he;
1089 he_cache[iter->curr++] = he;
1090
1091 hist_entry__append_callchain(he, sample);
1092
1093 /*
1094 * We need to re-initialize the cursor since callchain_append()
1095 * advanced the cursor to the end.
1096 */
1097 callchain_cursor_commit(get_tls_callchain_cursor());
1098
1099 hists__inc_nr_samples(hists, he->filtered);
1100
1101 return err;
1102 }
1103
1104 static int
1105 iter_next_cumulative_entry(struct hist_entry_iter *iter,
1106 struct addr_location *al)
1107 {
1108 struct callchain_cursor_node *node;
1109
1110 node = callchain_cursor_current(get_tls_callchain_cursor());
1111 if (node == NULL)
1112 return 0;
1113
1114 return fill_callchain_info(al, node, iter->hide_unresolved);
1115 }
1116
1117 static bool
1118 hist_entry__fast__sym_diff(struct hist_entry *left,
1119 struct hist_entry *right)
1120 {
1121 struct symbol *sym_l = left->ms.sym;
1122 struct symbol *sym_r = right->ms.sym;
1123
1124 if (!sym_l && !sym_r)
1125 return left->ip != right->ip;
1126
1127 return !!_sort__sym_cmp(sym_l, sym_r);
1128 }
1129
1130
1131 static int
1132 iter_add_next_cumulative_entry(struct hist_entry_iter *iter,
1133 struct addr_location *al)
1134 {
1135 struct evsel *evsel = iter->evsel;
1136 struct perf_sample *sample = iter->sample;
1137 struct hist_entry **he_cache = iter->he_cache;
1138 struct hist_entry *he;
1139 struct hist_entry he_tmp = {
1140 .hists = evsel__hists(evsel),
1141 .cpu = al->cpu,
1142 .thread = al->thread,
1143 .comm = thread__comm(al->thread),
1144 .ip = al->addr,
1145 .ms = {
1146 .maps = al->maps,
1147 .map = al->map,
1148 .sym = al->sym,
1149 },
1150 .srcline = (char *) al->srcline,
1151 .parent = iter->parent,
1152 .raw_data = sample->raw_data,
1153 .raw_size = sample->raw_size,
1154 };
1155 int i;
1156 struct callchain_cursor cursor, *tls_cursor = get_tls_callchain_cursor();
1157 bool fast = hists__has(he_tmp.hists, sym);
1158
1159 if (tls_cursor == NULL)
1160 return -ENOMEM;
1161
1162 callchain_cursor_snapshot(&cursor, tls_cursor);
1163
1164 callchain_cursor_advance(tls_cursor);
1165
1166 /*
1167 * Check if there's duplicate entries in the callchain.
1168 * It's possible that it has cycles or recursive calls.
1169 */
1170 for (i = 0; i < iter->curr; i++) {
1171 /*
1172 * For most cases, there are no duplicate entries in callchain.
1173 * The symbols are usually different. Do a quick check for
1174 * symbols first.
1175 */
1176 if (fast && hist_entry__fast__sym_diff(he_cache[i], &he_tmp))
1177 continue;
1178
1179 if (hist_entry__cmp(he_cache[i], &he_tmp) == 0) {
1180 /* to avoid calling callback function */
1181 iter->he = NULL;
1182 return 0;
1183 }
1184 }
1185
1186 he = hists__add_entry(evsel__hists(evsel), al, iter->parent, NULL, NULL,
1187 NULL, sample, false);
1188 if (he == NULL)
1189 return -ENOMEM;
1190
1191 iter->he = he;
1192 he_cache[iter->curr++] = he;
1193
1194 if (hist_entry__has_callchains(he) && symbol_conf.use_callchain)
1195 callchain_append(he->callchain, &cursor, sample->period);
1196 return 0;
1197 }
1198
1199 static int
1200 iter_finish_cumulative_entry(struct hist_entry_iter *iter,
1201 struct addr_location *al __maybe_unused)
1202 {
1203 mem_info__zput(iter->mi);
1204 zfree(&iter->bi);
1205 zfree(&iter->he_cache);
1206 iter->he = NULL;
1207
1208 return 0;
1209 }
1210
1211 const struct hist_iter_ops hist_iter_mem = {
1212 .prepare_entry = iter_prepare_mem_entry,
1213 .add_single_entry = iter_add_single_mem_entry,
1214 .next_entry = iter_next_nop_entry,
1215 .add_next_entry = iter_add_next_nop_entry,
1216 .finish_entry = iter_finish_mem_entry,
1217 };
1218
1219 const struct hist_iter_ops hist_iter_branch = {
1220 .prepare_entry = iter_prepare_branch_entry,
1221 .add_single_entry = iter_add_single_branch_entry,
1222 .next_entry = iter_next_branch_entry,
1223 .add_next_entry = iter_add_next_branch_entry,
1224 .finish_entry = iter_finish_branch_entry,
1225 };
1226
1227 const struct hist_iter_ops hist_iter_normal = {
1228 .prepare_entry = iter_prepare_normal_entry,
1229 .add_single_entry = iter_add_single_normal_entry,
1230 .next_entry = iter_next_nop_entry,
1231 .add_next_entry = iter_add_next_nop_entry,
1232 .finish_entry = iter_finish_normal_entry,
1233 };
1234
1235 const struct hist_iter_ops hist_iter_cumulative = {
1236 .prepare_entry = iter_prepare_cumulative_entry,
1237 .add_single_entry = iter_add_single_cumulative_entry,
1238 .next_entry = iter_next_cumulative_entry,
1239 .add_next_entry = iter_add_next_cumulative_entry,
1240 .finish_entry = iter_finish_cumulative_entry,
1241 };
1242
1243 int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al,
1244 int max_stack_depth, void *arg)
1245 {
1246 int err, err2;
1247 struct map *alm = NULL;
1248
1249 if (al)
1250 alm = map__get(al->map);
1251
1252 err = sample__resolve_callchain(iter->sample, get_tls_callchain_cursor(), &iter->parent,
1253 iter->evsel, al, max_stack_depth);
1254 if (err) {
1255 map__put(alm);
1256 return err;
1257 }
1258
1259 err = iter->ops->prepare_entry(iter, al);
1260 if (err)
1261 goto out;
1262
1263 err = iter->ops->add_single_entry(iter, al);
1264 if (err)
1265 goto out;
1266
1267 if (iter->he && iter->add_entry_cb) {
1268 err = iter->add_entry_cb(iter, al, true, arg);
1269 if (err)
1270 goto out;
1271 }
1272
1273 while (iter->ops->next_entry(iter, al)) {
1274 err = iter->ops->add_next_entry(iter, al);
1275 if (err)
1276 break;
1277
1278 if (iter->he && iter->add_entry_cb) {
1279 err = iter->add_entry_cb(iter, al, false, arg);
1280 if (err)
1281 goto out;
1282 }
1283 }
1284
1285 out:
1286 err2 = iter->ops->finish_entry(iter, al);
1287 if (!err)
1288 err = err2;
1289
1290 map__put(alm);
1291
1292 return err;
1293 }
1294
1295 int64_t
1296 hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
1297 {
1298 struct hists *hists = left->hists;
1299 struct perf_hpp_fmt *fmt;
1300 int64_t cmp = 0;
1301
1302 hists__for_each_sort_list(hists, fmt) {
1303 if (perf_hpp__is_dynamic_entry(fmt) &&
1304 !perf_hpp__defined_dynamic_entry(fmt, hists))
1305 continue;
1306
1307 cmp = fmt->cmp(fmt, left, right);
1308 if (cmp)
1309 break;
1310 }
1311
1312 return cmp;
1313 }
1314
1315 int64_t
1316 hist_entry__collapse(struct hist_entry *left, struct hist_entry *right)
1317 {
1318 struct hists *hists = left->hists;
1319 struct perf_hpp_fmt *fmt;
1320 int64_t cmp = 0;
1321
1322 hists__for_each_sort_list(hists, fmt) {
1323 if (perf_hpp__is_dynamic_entry(fmt) &&
1324 !perf_hpp__defined_dynamic_entry(fmt, hists))
1325 continue;
1326
1327 cmp = fmt->collapse(fmt, left, right);
1328 if (cmp)
1329 break;
1330 }
1331
1332 return cmp;
1333 }
1334
1335 void hist_entry__delete(struct hist_entry *he)
1336 {
1337 struct hist_entry_ops *ops = he->ops;
1338
1339 thread__zput(he->thread);
1340 map_symbol__exit(&he->ms);
1341
1342 if (he->branch_info) {
1343 branch_info__exit(he->branch_info);
1344 zfree(&he->branch_info);
1345 }
1346
1347 if (he->mem_info) {
1348 map_symbol__exit(&mem_info__iaddr(he->mem_info)->ms);
1349 map_symbol__exit(&mem_info__daddr(he->mem_info)->ms);
1350 mem_info__zput(he->mem_info);
1351 }
1352
1353 if (he->block_info)
1354 block_info__delete(he->block_info);
1355
1356 if (he->kvm_info)
1357 kvm_info__zput(he->kvm_info);
1358
1359 zfree(&he->res_samples);
1360 zfree(&he->stat_acc);
1361 zfree_srcline(&he->srcline);
1362 if (he->srcfile && he->srcfile[0])
1363 zfree(&he->srcfile);
1364 free_callchain(he->callchain);
1365 zfree(&he->trace_output);
1366 zfree(&he->raw_data);
1367 ops->free(he);
1368 }
1369
1370 /*
1371 * If this is not the last column, then we need to pad it according to the
1372 * pre-calculated max length for this column, otherwise don't bother adding
1373 * spaces because that would break viewing this with, for instance, 'less',
1374 * that would show tons of trailing spaces when a long C++ demangled method
1375 * names is sampled.
1376 */
1377 int hist_entry__snprintf_alignment(struct hist_entry *he, struct perf_hpp *hpp,
1378 struct perf_hpp_fmt *fmt, int printed)
1379 {
1380 if (!list_is_last(&fmt->list, &he->hists->hpp_list->fields)) {
1381 const int width = fmt->width(fmt, hpp, he->hists);
1382 if (printed < width) {
1383 advance_hpp(hpp, printed);
1384 printed = scnprintf(hpp->buf, hpp->size, "%-*s", width - printed, " ");
1385 }
1386 }
1387
1388 return printed;
1389 }
1390
1391 /*
1392 * collapse the histogram
1393 */
1394
1395 static void hists__apply_filters(struct hists *hists, struct hist_entry *he);
1396 static void hists__remove_entry_filter(struct hists *hists, struct hist_entry *he,
1397 enum hist_filter type);
1398
1399 typedef bool (*fmt_chk_fn)(struct perf_hpp_fmt *fmt);
1400
1401 static bool check_thread_entry(struct perf_hpp_fmt *fmt)
1402 {
1403 return perf_hpp__is_thread_entry(fmt) || perf_hpp__is_comm_entry(fmt);
1404 }
1405
1406 static void hist_entry__check_and_remove_filter(struct hist_entry *he,
1407 enum hist_filter type,
1408 fmt_chk_fn check)
1409 {
1410 struct perf_hpp_fmt *fmt;
1411 bool type_match = false;
1412 struct hist_entry *parent = he->parent_he;
1413
1414 switch (type) {
1415 case HIST_FILTER__THREAD:
1416 if (symbol_conf.comm_list == NULL &&
1417 symbol_conf.pid_list == NULL &&
1418 symbol_conf.tid_list == NULL)
1419 return;
1420 break;
1421 case HIST_FILTER__DSO:
1422 if (symbol_conf.dso_list == NULL)
1423 return;
1424 break;
1425 case HIST_FILTER__SYMBOL:
1426 if (symbol_conf.sym_list == NULL)
1427 return;
1428 break;
1429 case HIST_FILTER__PARENT:
1430 case HIST_FILTER__GUEST:
1431 case HIST_FILTER__HOST:
1432 case HIST_FILTER__SOCKET:
1433 case HIST_FILTER__C2C:
1434 default:
1435 return;
1436 }
1437
1438 /* if it's filtered by own fmt, it has to have filter bits */
1439 perf_hpp_list__for_each_format(he->hpp_list, fmt) {
1440 if (check(fmt)) {
1441 type_match = true;
1442 break;
1443 }
1444 }
1445
1446 if (type_match) {
1447 /*
1448 * If the filter is for current level entry, propagate
1449 * filter marker to parents. The marker bit was
1450 * already set by default so it only needs to clear
1451 * non-filtered entries.
1452 */
1453 if (!(he->filtered & (1 << type))) {
1454 while (parent) {
1455 parent->filtered &= ~(1 << type);
1456 parent = parent->parent_he;
1457 }
1458 }
1459 } else {
1460 /*
1461 * If current entry doesn't have matching formats, set
1462 * filter marker for upper level entries. it will be
1463 * cleared if its lower level entries is not filtered.
1464 *
1465 * For lower-level entries, it inherits parent's
1466 * filter bit so that lower level entries of a
1467 * non-filtered entry won't set the filter marker.
1468 */
1469 if (parent == NULL)
1470 he->filtered |= (1 << type);
1471 else
1472 he->filtered |= (parent->filtered & (1 << type));
1473 }
1474 }
1475
1476 static void hist_entry__apply_hierarchy_filters(struct hist_entry *he)
1477 {
1478 hist_entry__check_and_remove_filter(he, HIST_FILTER__THREAD,
1479 check_thread_entry);
1480
1481 hist_entry__check_and_remove_filter(he, HIST_FILTER__DSO,
1482 perf_hpp__is_dso_entry);
1483
1484 hist_entry__check_and_remove_filter(he, HIST_FILTER__SYMBOL,
1485 perf_hpp__is_sym_entry);
1486
1487 hists__apply_filters(he->hists, he);
1488 }
1489
1490 static struct hist_entry *hierarchy_insert_entry(struct hists *hists,
1491 struct rb_root_cached *root,
1492 struct hist_entry *he,
1493 struct hist_entry *parent_he,
1494 struct perf_hpp_list *hpp_list)
1495 {
1496 struct rb_node **p = &root->rb_root.rb_node;
1497 struct rb_node *parent = NULL;
1498 struct hist_entry *iter, *new;
1499 struct perf_hpp_fmt *fmt;
1500 int64_t cmp;
1501 bool leftmost = true;
1502
1503 while (*p != NULL) {
1504 parent = *p;
1505 iter = rb_entry(parent, struct hist_entry, rb_node_in);
1506
1507 cmp = 0;
1508 perf_hpp_list__for_each_sort_list(hpp_list, fmt) {
1509 cmp = fmt->collapse(fmt, iter, he);
1510 if (cmp)
1511 break;
1512 }
1513
1514 if (!cmp) {
1515 he_stat__add_stat(&iter->stat, &he->stat);
1516 return iter;
1517 }
1518
1519 if (cmp < 0)
1520 p = &parent->rb_left;
1521 else {
1522 p = &parent->rb_right;
1523 leftmost = false;
1524 }
1525 }
1526
1527 new = hist_entry__new(he, true);
1528 if (new == NULL)
1529 return NULL;
1530
1531 hists->nr_entries++;
1532
1533 /* save related format list for output */
1534 new->hpp_list = hpp_list;
1535 new->parent_he = parent_he;
1536
1537 hist_entry__apply_hierarchy_filters(new);
1538
1539 /* some fields are now passed to 'new' */
1540 perf_hpp_list__for_each_sort_list(hpp_list, fmt) {
1541 if (perf_hpp__is_trace_entry(fmt) || perf_hpp__is_dynamic_entry(fmt))
1542 he->trace_output = NULL;
1543 else
1544 new->trace_output = NULL;
1545
1546 if (perf_hpp__is_srcline_entry(fmt))
1547 he->srcline = NULL;
1548 else
1549 new->srcline = NULL;
1550
1551 if (perf_hpp__is_srcfile_entry(fmt))
1552 he->srcfile = NULL;
1553 else
1554 new->srcfile = NULL;
1555 }
1556
1557 rb_link_node(&new->rb_node_in, parent, p);
1558 rb_insert_color_cached(&new->rb_node_in, root, leftmost);
1559 return new;
1560 }
1561
1562 static int hists__hierarchy_insert_entry(struct hists *hists,
1563 struct rb_root_cached *root,
1564 struct hist_entry *he)
1565 {
1566 struct perf_hpp_list_node *node;
1567 struct hist_entry *new_he = NULL;
1568 struct hist_entry *parent = NULL;
1569 int depth = 0;
1570 int ret = 0;
1571
1572 list_for_each_entry(node, &hists->hpp_formats, list) {
1573 /* skip period (overhead) and elided columns */
1574 if (node->level == 0 || node->skip)
1575 continue;
1576
1577 /* insert copy of 'he' for each fmt into the hierarchy */
1578 new_he = hierarchy_insert_entry(hists, root, he, parent, &node->hpp);
1579 if (new_he == NULL) {
1580 ret = -1;
1581 break;
1582 }
1583
1584 root = &new_he->hroot_in;
1585 new_he->depth = depth++;
1586 parent = new_he;
1587 }
1588
1589 if (new_he) {
1590 new_he->leaf = true;
1591
1592 if (hist_entry__has_callchains(new_he) &&
1593 symbol_conf.use_callchain) {
1594 struct callchain_cursor *cursor = get_tls_callchain_cursor();
1595
1596 if (cursor == NULL)
1597 return -1;
1598
1599 callchain_cursor_reset(cursor);
1600 if (callchain_merge(cursor,
1601 new_he->callchain,
1602 he->callchain) < 0)
1603 ret = -1;
1604 }
1605 }
1606
1607 /* 'he' is no longer used */
1608 hist_entry__delete(he);
1609
1610 /* return 0 (or -1) since it already applied filters */
1611 return ret;
1612 }
1613
1614 static int hists__collapse_insert_entry(struct hists *hists,
1615 struct rb_root_cached *root,
1616 struct hist_entry *he)
1617 {
1618 struct rb_node **p = &root->rb_root.rb_node;
1619 struct rb_node *parent = NULL;
1620 struct hist_entry *iter;
1621 int64_t cmp;
1622 bool leftmost = true;
1623
1624 if (symbol_conf.report_hierarchy)
1625 return hists__hierarchy_insert_entry(hists, root, he);
1626
1627 while (*p != NULL) {
1628 parent = *p;
1629 iter = rb_entry(parent, struct hist_entry, rb_node_in);
1630
1631 cmp = hist_entry__collapse(iter, he);
1632
1633 if (!cmp) {
1634 int ret = 0;
1635
1636 he_stat__add_stat(&iter->stat, &he->stat);
1637 if (symbol_conf.cumulate_callchain)
1638 he_stat__add_stat(iter->stat_acc, he->stat_acc);
1639
1640 if (hist_entry__has_callchains(he) && symbol_conf.use_callchain) {
1641 struct callchain_cursor *cursor = get_tls_callchain_cursor();
1642
1643 if (cursor != NULL) {
1644 callchain_cursor_reset(cursor);
1645 if (callchain_merge(cursor, iter->callchain, he->callchain) < 0)
1646 ret = -1;
1647 } else {
1648 ret = 0;
1649 }
1650 }
1651 hist_entry__delete(he);
1652 return ret;
1653 }
1654
1655 if (cmp < 0)
1656 p = &(*p)->rb_left;
1657 else {
1658 p = &(*p)->rb_right;
1659 leftmost = false;
1660 }
1661 }
1662 hists->nr_entries++;
1663
1664 rb_link_node(&he->rb_node_in, parent, p);
1665 rb_insert_color_cached(&he->rb_node_in, root, leftmost);
1666 return 1;
1667 }
1668
1669 struct rb_root_cached *hists__get_rotate_entries_in(struct hists *hists)
1670 {
1671 struct rb_root_cached *root;
1672
1673 mutex_lock(&hists->lock);
1674
1675 root = hists->entries_in;
1676 if (++hists->entries_in > &hists->entries_in_array[1])
1677 hists->entries_in = &hists->entries_in_array[0];
1678
1679 mutex_unlock(&hists->lock);
1680
1681 return root;
1682 }
1683
1684 static void hists__apply_filters(struct hists *hists, struct hist_entry *he)
1685 {
1686 hists__filter_entry_by_dso(hists, he);
1687 hists__filter_entry_by_thread(hists, he);
1688 hists__filter_entry_by_symbol(hists, he);
1689 hists__filter_entry_by_socket(hists, he);
1690 }
1691
1692 int hists__collapse_resort(struct hists *hists, struct ui_progress *prog)
1693 {
1694 struct rb_root_cached *root;
1695 struct rb_node *next;
1696 struct hist_entry *n;
1697 int ret;
1698
1699 if (!hists__has(hists, need_collapse))
1700 return 0;
1701
1702 hists->nr_entries = 0;
1703
1704 root = hists__get_rotate_entries_in(hists);
1705
1706 next = rb_first_cached(root);
1707
1708 while (next) {
1709 if (session_done())
1710 break;
1711 n = rb_entry(next, struct hist_entry, rb_node_in);
1712 next = rb_next(&n->rb_node_in);
1713
1714 rb_erase_cached(&n->rb_node_in, root);
1715 ret = hists__collapse_insert_entry(hists, &hists->entries_collapsed, n);
1716 if (ret < 0)
1717 return -1;
1718
1719 if (ret) {
1720 /*
1721 * If it wasn't combined with one of the entries already
1722 * collapsed, we need to apply the filters that may have
1723 * been set by, say, the hist_browser.
1724 */
1725 hists__apply_filters(hists, n);
1726 }
1727 if (prog)
1728 ui_progress__update(prog, 1);
1729 }
1730 return 0;
1731 }
1732
1733 static int64_t hist_entry__sort(struct hist_entry *a, struct hist_entry *b)
1734 {
1735 struct hists *hists = a->hists;
1736 struct perf_hpp_fmt *fmt;
1737 int64_t cmp = 0;
1738
1739 hists__for_each_sort_list(hists, fmt) {
1740 if (perf_hpp__should_skip(fmt, a->hists))
1741 continue;
1742
1743 cmp = fmt->sort(fmt, a, b);
1744 if (cmp)
1745 break;
1746 }
1747
1748 return cmp;
1749 }
1750
1751 static void hists__reset_filter_stats(struct hists *hists)
1752 {
1753 hists->nr_non_filtered_entries = 0;
1754 hists->stats.total_non_filtered_period = 0;
1755 }
1756
1757 void hists__reset_stats(struct hists *hists)
1758 {
1759 hists->nr_entries = 0;
1760 hists->stats.total_period = 0;
1761
1762 hists__reset_filter_stats(hists);
1763 }
1764
1765 static void hists__inc_filter_stats(struct hists *hists, struct hist_entry *h)
1766 {
1767 hists->nr_non_filtered_entries++;
1768 hists->stats.total_non_filtered_period += h->stat.period;
1769 }
1770
1771 void hists__inc_stats(struct hists *hists, struct hist_entry *h)
1772 {
1773 if (!h->filtered)
1774 hists__inc_filter_stats(hists, h);
1775
1776 hists->nr_entries++;
1777 hists->stats.total_period += h->stat.period;
1778 }
1779
1780 static void hierarchy_recalc_total_periods(struct hists *hists)
1781 {
1782 struct rb_node *node;
1783 struct hist_entry *he;
1784
1785 node = rb_first_cached(&hists->entries);
1786
1787 hists->stats.total_period = 0;
1788 hists->stats.total_non_filtered_period = 0;
1789
1790 /*
1791 * recalculate total period using top-level entries only
1792 * since lower level entries only see non-filtered entries
1793 * but upper level entries have sum of both entries.
1794 */
1795 while (node) {
1796 he = rb_entry(node, struct hist_entry, rb_node);
1797 node = rb_next(node);
1798
1799 hists->stats.total_period += he->stat.period;
1800 if (!he->filtered)
1801 hists->stats.total_non_filtered_period += he->stat.period;
1802 }
1803 }
1804
1805 static void hierarchy_insert_output_entry(struct rb_root_cached *root,
1806 struct hist_entry *he)
1807 {
1808 struct rb_node **p = &root->rb_root.rb_node;
1809 struct rb_node *parent = NULL;
1810 struct hist_entry *iter;
1811 struct perf_hpp_fmt *fmt;
1812 bool leftmost = true;
1813
1814 while (*p != NULL) {
1815 parent = *p;
1816 iter = rb_entry(parent, struct hist_entry, rb_node);
1817
1818 if (hist_entry__sort(he, iter) > 0)
1819 p = &parent->rb_left;
1820 else {
1821 p = &parent->rb_right;
1822 leftmost = false;
1823 }
1824 }
1825
1826 rb_link_node(&he->rb_node, parent, p);
1827 rb_insert_color_cached(&he->rb_node, root, leftmost);
1828
1829 /* update column width of dynamic entry */
1830 perf_hpp_list__for_each_sort_list(he->hpp_list, fmt) {
1831 if (fmt->init)
1832 fmt->init(fmt, he);
1833 }
1834 }
1835
1836 static void hists__hierarchy_output_resort(struct hists *hists,
1837 struct ui_progress *prog,
1838 struct rb_root_cached *root_in,
1839 struct rb_root_cached *root_out,
1840 u64 min_callchain_hits,
1841 bool use_callchain)
1842 {
1843 struct rb_node *node;
1844 struct hist_entry *he;
1845
1846 *root_out = RB_ROOT_CACHED;
1847 node = rb_first_cached(root_in);
1848
1849 while (node) {
1850 he = rb_entry(node, struct hist_entry, rb_node_in);
1851 node = rb_next(node);
1852
1853 hierarchy_insert_output_entry(root_out, he);
1854
1855 if (prog)
1856 ui_progress__update(prog, 1);
1857
1858 hists->nr_entries++;
1859 if (!he->filtered) {
1860 hists->nr_non_filtered_entries++;
1861 hists__calc_col_len(hists, he);
1862 }
1863
1864 if (!he->leaf) {
1865 hists__hierarchy_output_resort(hists, prog,
1866 &he->hroot_in,
1867 &he->hroot_out,
1868 min_callchain_hits,
1869 use_callchain);
1870 continue;
1871 }
1872
1873 if (!use_callchain)
1874 continue;
1875
1876 if (callchain_param.mode == CHAIN_GRAPH_REL) {
1877 u64 total = he->stat.period;
1878
1879 if (symbol_conf.cumulate_callchain)
1880 total = he->stat_acc->period;
1881
1882 min_callchain_hits = total * (callchain_param.min_percent / 100);
1883 }
1884
1885 callchain_param.sort(&he->sorted_chain, he->callchain,
1886 min_callchain_hits, &callchain_param);
1887 }
1888 }
1889
1890 static void __hists__insert_output_entry(struct rb_root_cached *entries,
1891 struct hist_entry *he,
1892 u64 min_callchain_hits,
1893 bool use_callchain)
1894 {
1895 struct rb_node **p = &entries->rb_root.rb_node;
1896 struct rb_node *parent = NULL;
1897 struct hist_entry *iter;
1898 struct perf_hpp_fmt *fmt;
1899 bool leftmost = true;
1900
1901 if (use_callchain) {
1902 if (callchain_param.mode == CHAIN_GRAPH_REL) {
1903 u64 total = he->stat.period;
1904
1905 if (symbol_conf.cumulate_callchain)
1906 total = he->stat_acc->period;
1907
1908 min_callchain_hits = total * (callchain_param.min_percent / 100);
1909 }
1910 callchain_param.sort(&he->sorted_chain, he->callchain,
1911 min_callchain_hits, &callchain_param);
1912 }
1913
1914 while (*p != NULL) {
1915 parent = *p;
1916 iter = rb_entry(parent, struct hist_entry, rb_node);
1917
1918 if (hist_entry__sort(he, iter) > 0)
1919 p = &(*p)->rb_left;
1920 else {
1921 p = &(*p)->rb_right;
1922 leftmost = false;
1923 }
1924 }
1925
1926 rb_link_node(&he->rb_node, parent, p);
1927 rb_insert_color_cached(&he->rb_node, entries, leftmost);
1928
1929 /* update column width of dynamic entries */
1930 perf_hpp_list__for_each_sort_list(&perf_hpp_list, fmt) {
1931 if (fmt->init)
1932 fmt->init(fmt, he);
1933 }
1934 }
1935
1936 static void output_resort(struct hists *hists, struct ui_progress *prog,
1937 bool use_callchain, hists__resort_cb_t cb,
1938 void *cb_arg)
1939 {
1940 struct rb_root_cached *root;
1941 struct rb_node *next;
1942 struct hist_entry *n;
1943 u64 callchain_total;
1944 u64 min_callchain_hits;
1945
1946 callchain_total = hists->callchain_period;
1947 if (symbol_conf.filter_relative)
1948 callchain_total = hists->callchain_non_filtered_period;
1949
1950 min_callchain_hits = callchain_total * (callchain_param.min_percent / 100);
1951
1952 hists__reset_stats(hists);
1953 hists__reset_col_len(hists);
1954
1955 if (symbol_conf.report_hierarchy) {
1956 hists__hierarchy_output_resort(hists, prog,
1957 &hists->entries_collapsed,
1958 &hists->entries,
1959 min_callchain_hits,
1960 use_callchain);
1961 hierarchy_recalc_total_periods(hists);
1962 return;
1963 }
1964
1965 if (hists__has(hists, need_collapse))
1966 root = &hists->entries_collapsed;
1967 else
1968 root = hists->entries_in;
1969
1970 next = rb_first_cached(root);
1971 hists->entries = RB_ROOT_CACHED;
1972
1973 while (next) {
1974 n = rb_entry(next, struct hist_entry, rb_node_in);
1975 next = rb_next(&n->rb_node_in);
1976
1977 if (cb && cb(n, cb_arg))
1978 continue;
1979
1980 __hists__insert_output_entry(&hists->entries, n, min_callchain_hits, use_callchain);
1981 hists__inc_stats(hists, n);
1982
1983 if (!n->filtered)
1984 hists__calc_col_len(hists, n);
1985
1986 if (prog)
1987 ui_progress__update(prog, 1);
1988 }
1989 }
1990
1991 void evsel__output_resort_cb(struct evsel *evsel, struct ui_progress *prog,
1992 hists__resort_cb_t cb, void *cb_arg)
1993 {
1994 bool use_callchain;
1995
1996 if (evsel && symbol_conf.use_callchain && !symbol_conf.show_ref_callgraph)
1997 use_callchain = evsel__has_callchain(evsel);
1998 else
1999 use_callchain = symbol_conf.use_callchain;
2000
2001 use_callchain |= symbol_conf.show_branchflag_count;
2002
2003 output_resort(evsel__hists(evsel), prog, use_callchain, cb, cb_arg);
2004 }
2005
2006 void evsel__output_resort(struct evsel *evsel, struct ui_progress *prog)
2007 {
2008 return evsel__output_resort_cb(evsel, prog, NULL, NULL);
2009 }
2010
2011 void hists__output_resort(struct hists *hists, struct ui_progress *prog)
2012 {
2013 output_resort(hists, prog, symbol_conf.use_callchain, NULL, NULL);
2014 }
2015
2016 void hists__output_resort_cb(struct hists *hists, struct ui_progress *prog,
2017 hists__resort_cb_t cb)
2018 {
2019 output_resort(hists, prog, symbol_conf.use_callchain, cb, NULL);
2020 }
2021
2022 static bool can_goto_child(struct hist_entry *he, enum hierarchy_move_dir hmd)
2023 {
2024 if (he->leaf || hmd == HMD_FORCE_SIBLING)
2025 return false;
2026
2027 if (he->unfolded || hmd == HMD_FORCE_CHILD)
2028 return true;
2029
2030 return false;
2031 }
2032
2033 struct rb_node *rb_hierarchy_last(struct rb_node *node)
2034 {
2035 struct hist_entry *he = rb_entry(node, struct hist_entry, rb_node);
2036
2037 while (can_goto_child(he, HMD_NORMAL)) {
2038 node = rb_last(&he->hroot_out.rb_root);
2039 he = rb_entry(node, struct hist_entry, rb_node);
2040 }
2041 return node;
2042 }
2043
2044 struct rb_node *__rb_hierarchy_next(struct rb_node *node, enum hierarchy_move_dir hmd)
2045 {
2046 struct hist_entry *he = rb_entry(node, struct hist_entry, rb_node);
2047
2048 if (can_goto_child(he, hmd))
2049 node = rb_first_cached(&he->hroot_out);
2050 else
2051 node = rb_next(node);
2052
2053 while (node == NULL) {
2054 he = he->parent_he;
2055 if (he == NULL)
2056 break;
2057
2058 node = rb_next(&he->rb_node);
2059 }
2060 return node;
2061 }
2062
2063 struct rb_node *rb_hierarchy_prev(struct rb_node *node)
2064 {
2065 struct hist_entry *he = rb_entry(node, struct hist_entry, rb_node);
2066
2067 node = rb_prev(node);
2068 if (node)
2069 return rb_hierarchy_last(node);
2070
2071 he = he->parent_he;
2072 if (he == NULL)
2073 return NULL;
2074
2075 return &he->rb_node;
2076 }
2077
2078 bool hist_entry__has_hierarchy_children(struct hist_entry *he, float limit)
2079 {
2080 struct rb_node *node;
2081 struct hist_entry *child;
2082 float percent;
2083
2084 if (he->leaf)
2085 return false;
2086
2087 node = rb_first_cached(&he->hroot_out);
2088 child = rb_entry(node, struct hist_entry, rb_node);
2089
2090 while (node && child->filtered) {
2091 node = rb_next(node);
2092 child = rb_entry(node, struct hist_entry, rb_node);
2093 }
2094
2095 if (node)
2096 percent = hist_entry__get_percent_limit(child);
2097 else
2098 percent = 0;
2099
2100 return node && percent >= limit;
2101 }
2102
2103 static void hists__remove_entry_filter(struct hists *hists, struct hist_entry *h,
2104 enum hist_filter filter)
2105 {
2106 h->filtered &= ~(1 << filter);
2107
2108 if (symbol_conf.report_hierarchy) {
2109 struct hist_entry *parent = h->parent_he;
2110
2111 while (parent) {
2112 he_stat__add_stat(&parent->stat, &h->stat);
2113
2114 parent->filtered &= ~(1 << filter);
2115
2116 if (parent->filtered)
2117 goto next;
2118
2119 /* force fold unfiltered entry for simplicity */
2120 parent->unfolded = false;
2121 parent->has_no_entry = false;
2122 parent->row_offset = 0;
2123 parent->nr_rows = 0;
2124 next:
2125 parent = parent->parent_he;
2126 }
2127 }
2128
2129 if (h->filtered)
2130 return;
2131
2132 /* force fold unfiltered entry for simplicity */
2133 h->unfolded = false;
2134 h->has_no_entry = false;
2135 h->row_offset = 0;
2136 h->nr_rows = 0;
2137
2138 hists->stats.nr_non_filtered_samples += h->stat.nr_events;
2139
2140 hists__inc_filter_stats(hists, h);
2141 hists__calc_col_len(hists, h);
2142 }
2143
2144
2145 static bool hists__filter_entry_by_dso(struct hists *hists,
2146 struct hist_entry *he)
2147 {
2148 if (hists->dso_filter != NULL &&
2149 (he->ms.map == NULL || !RC_CHK_EQUAL(map__dso(he->ms.map), hists->dso_filter))) {
2150 he->filtered |= (1 << HIST_FILTER__DSO);
2151 return true;
2152 }
2153
2154 return false;
2155 }
2156
2157 static bool hists__filter_entry_by_thread(struct hists *hists,
2158 struct hist_entry *he)
2159 {
2160 if (hists->thread_filter != NULL &&
2161 !RC_CHK_EQUAL(he->thread, hists->thread_filter)) {
2162 he->filtered |= (1 << HIST_FILTER__THREAD);
2163 return true;
2164 }
2165
2166 return false;
2167 }
2168
2169 static bool hists__filter_entry_by_symbol(struct hists *hists,
2170 struct hist_entry *he)
2171 {
2172 if (hists->symbol_filter_str != NULL &&
2173 (!he->ms.sym || strstr(he->ms.sym->name,
2174 hists->symbol_filter_str) == NULL)) {
2175 he->filtered |= (1 << HIST_FILTER__SYMBOL);
2176 return true;
2177 }
2178
2179 return false;
2180 }
2181
2182 static bool hists__filter_entry_by_socket(struct hists *hists,
2183 struct hist_entry *he)
2184 {
2185 if ((hists->socket_filter > -1) &&
2186 (he->socket != hists->socket_filter)) {
2187 he->filtered |= (1 << HIST_FILTER__SOCKET);
2188 return true;
2189 }
2190
2191 return false;
2192 }
2193
2194 typedef bool (*filter_fn_t)(struct hists *hists, struct hist_entry *he);
2195
2196 static void hists__filter_by_type(struct hists *hists, int type, filter_fn_t filter)
2197 {
2198 struct rb_node *nd;
2199
2200 hists->stats.nr_non_filtered_samples = 0;
2201
2202 hists__reset_filter_stats(hists);
2203 hists__reset_col_len(hists);
2204
2205 for (nd = rb_first_cached(&hists->entries); nd; nd = rb_next(nd)) {
2206 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
2207
2208 if (filter(hists, h))
2209 continue;
2210
2211 hists__remove_entry_filter(hists, h, type);
2212 }
2213 }
2214
2215 static void resort_filtered_entry(struct rb_root_cached *root,
2216 struct hist_entry *he)
2217 {
2218 struct rb_node **p = &root->rb_root.rb_node;
2219 struct rb_node *parent = NULL;
2220 struct hist_entry *iter;
2221 struct rb_root_cached new_root = RB_ROOT_CACHED;
2222 struct rb_node *nd;
2223 bool leftmost = true;
2224
2225 while (*p != NULL) {
2226 parent = *p;
2227 iter = rb_entry(parent, struct hist_entry, rb_node);
2228
2229 if (hist_entry__sort(he, iter) > 0)
2230 p = &(*p)->rb_left;
2231 else {
2232 p = &(*p)->rb_right;
2233 leftmost = false;
2234 }
2235 }
2236
2237 rb_link_node(&he->rb_node, parent, p);
2238 rb_insert_color_cached(&he->rb_node, root, leftmost);
2239
2240 if (he->leaf || he->filtered)
2241 return;
2242
2243 nd = rb_first_cached(&he->hroot_out);
2244 while (nd) {
2245 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
2246
2247 nd = rb_next(nd);
2248 rb_erase_cached(&h->rb_node, &he->hroot_out);
2249
2250 resort_filtered_entry(&new_root, h);
2251 }
2252
2253 he->hroot_out = new_root;
2254 }
2255
2256 static void hists__filter_hierarchy(struct hists *hists, int type, const void *arg)
2257 {
2258 struct rb_node *nd;
2259 struct rb_root_cached new_root = RB_ROOT_CACHED;
2260
2261 hists->stats.nr_non_filtered_samples = 0;
2262
2263 hists__reset_filter_stats(hists);
2264 hists__reset_col_len(hists);
2265
2266 nd = rb_first_cached(&hists->entries);
2267 while (nd) {
2268 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
2269 int ret;
2270
2271 ret = hist_entry__filter(h, type, arg);
2272
2273 /*
2274 * case 1. non-matching type
2275 * zero out the period, set filter marker and move to child
2276 */
2277 if (ret < 0) {
2278 memset(&h->stat, 0, sizeof(h->stat));
2279 h->filtered |= (1 << type);
2280
2281 nd = __rb_hierarchy_next(&h->rb_node, HMD_FORCE_CHILD);
2282 }
2283 /*
2284 * case 2. matched type (filter out)
2285 * set filter marker and move to next
2286 */
2287 else if (ret == 1) {
2288 h->filtered |= (1 << type);
2289
2290 nd = __rb_hierarchy_next(&h->rb_node, HMD_FORCE_SIBLING);
2291 }
2292 /*
2293 * case 3. ok (not filtered)
2294 * add period to hists and parents, erase the filter marker
2295 * and move to next sibling
2296 */
2297 else {
2298 hists__remove_entry_filter(hists, h, type);
2299
2300 nd = __rb_hierarchy_next(&h->rb_node, HMD_FORCE_SIBLING);
2301 }
2302 }
2303
2304 hierarchy_recalc_total_periods(hists);
2305
2306 /*
2307 * resort output after applying a new filter since filter in a lower
2308 * hierarchy can change periods in a upper hierarchy.
2309 */
2310 nd = rb_first_cached(&hists->entries);
2311 while (nd) {
2312 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
2313
2314 nd = rb_next(nd);
2315 rb_erase_cached(&h->rb_node, &hists->entries);
2316
2317 resort_filtered_entry(&new_root, h);
2318 }
2319
2320 hists->entries = new_root;
2321 }
2322
2323 void hists__filter_by_thread(struct hists *hists)
2324 {
2325 if (symbol_conf.report_hierarchy)
2326 hists__filter_hierarchy(hists, HIST_FILTER__THREAD,
2327 hists->thread_filter);
2328 else
2329 hists__filter_by_type(hists, HIST_FILTER__THREAD,
2330 hists__filter_entry_by_thread);
2331 }
2332
2333 void hists__filter_by_dso(struct hists *hists)
2334 {
2335 if (symbol_conf.report_hierarchy)
2336 hists__filter_hierarchy(hists, HIST_FILTER__DSO,
2337 hists->dso_filter);
2338 else
2339 hists__filter_by_type(hists, HIST_FILTER__DSO,
2340 hists__filter_entry_by_dso);
2341 }
2342
2343 void hists__filter_by_symbol(struct hists *hists)
2344 {
2345 if (symbol_conf.report_hierarchy)
2346 hists__filter_hierarchy(hists, HIST_FILTER__SYMBOL,
2347 hists->symbol_filter_str);
2348 else
2349 hists__filter_by_type(hists, HIST_FILTER__SYMBOL,
2350 hists__filter_entry_by_symbol);
2351 }
2352
2353 void hists__filter_by_socket(struct hists *hists)
2354 {
2355 if (symbol_conf.report_hierarchy)
2356 hists__filter_hierarchy(hists, HIST_FILTER__SOCKET,
2357 &hists->socket_filter);
2358 else
2359 hists__filter_by_type(hists, HIST_FILTER__SOCKET,
2360 hists__filter_entry_by_socket);
2361 }
2362
2363 void events_stats__inc(struct events_stats *stats, u32 type)
2364 {
2365 ++stats->nr_events[0];
2366 ++stats->nr_events[type];
2367 }
2368
2369 static void hists_stats__inc(struct hists_stats *stats)
2370 {
2371 ++stats->nr_samples;
2372 }
2373
2374 void hists__inc_nr_events(struct hists *hists)
2375 {
2376 hists_stats__inc(&hists->stats);
2377 }
2378
2379 void hists__inc_nr_samples(struct hists *hists, bool filtered)
2380 {
2381 hists_stats__inc(&hists->stats);
2382 if (!filtered)
2383 hists->stats.nr_non_filtered_samples++;
2384 }
2385
2386 void hists__inc_nr_lost_samples(struct hists *hists, u32 lost)
2387 {
2388 hists->stats.nr_lost_samples += lost;
2389 }
2390
2391 void hists__inc_nr_dropped_samples(struct hists *hists, u32 lost)
2392 {
2393 hists->stats.nr_dropped_samples += lost;
2394 }
2395
2396 static struct hist_entry *hists__add_dummy_entry(struct hists *hists,
2397 struct hist_entry *pair)
2398 {
2399 struct rb_root_cached *root;
2400 struct rb_node **p;
2401 struct rb_node *parent = NULL;
2402 struct hist_entry *he;
2403 int64_t cmp;
2404 bool leftmost = true;
2405
2406 if (hists__has(hists, need_collapse))
2407 root = &hists->entries_collapsed;
2408 else
2409 root = hists->entries_in;
2410
2411 p = &root->rb_root.rb_node;
2412
2413 while (*p != NULL) {
2414 parent = *p;
2415 he = rb_entry(parent, struct hist_entry, rb_node_in);
2416
2417 cmp = hist_entry__collapse(he, pair);
2418
2419 if (!cmp)
2420 goto out;
2421
2422 if (cmp < 0)
2423 p = &(*p)->rb_left;
2424 else {
2425 p = &(*p)->rb_right;
2426 leftmost = false;
2427 }
2428 }
2429
2430 he = hist_entry__new(pair, true);
2431 if (he) {
2432 memset(&he->stat, 0, sizeof(he->stat));
2433 he->hists = hists;
2434 if (symbol_conf.cumulate_callchain)
2435 memset(he->stat_acc, 0, sizeof(he->stat));
2436 rb_link_node(&he->rb_node_in, parent, p);
2437 rb_insert_color_cached(&he->rb_node_in, root, leftmost);
2438 hists__inc_stats(hists, he);
2439 he->dummy = true;
2440 }
2441 out:
2442 return he;
2443 }
2444
2445 static struct hist_entry *add_dummy_hierarchy_entry(struct hists *hists,
2446 struct rb_root_cached *root,
2447 struct hist_entry *pair)
2448 {
2449 struct rb_node **p;
2450 struct rb_node *parent = NULL;
2451 struct hist_entry *he;
2452 struct perf_hpp_fmt *fmt;
2453 bool leftmost = true;
2454
2455 p = &root->rb_root.rb_node;
2456 while (*p != NULL) {
2457 int64_t cmp = 0;
2458
2459 parent = *p;
2460 he = rb_entry(parent, struct hist_entry, rb_node_in);
2461
2462 perf_hpp_list__for_each_sort_list(he->hpp_list, fmt) {
2463 cmp = fmt->collapse(fmt, he, pair);
2464 if (cmp)
2465 break;
2466 }
2467 if (!cmp)
2468 goto out;
2469
2470 if (cmp < 0)
2471 p = &parent->rb_left;
2472 else {
2473 p = &parent->rb_right;
2474 leftmost = false;
2475 }
2476 }
2477
2478 he = hist_entry__new(pair, true);
2479 if (he) {
2480 rb_link_node(&he->rb_node_in, parent, p);
2481 rb_insert_color_cached(&he->rb_node_in, root, leftmost);
2482
2483 he->dummy = true;
2484 he->hists = hists;
2485 memset(&he->stat, 0, sizeof(he->stat));
2486 hists__inc_stats(hists, he);
2487 }
2488 out:
2489 return he;
2490 }
2491
2492 static struct hist_entry *hists__find_entry(struct hists *hists,
2493 struct hist_entry *he)
2494 {
2495 struct rb_node *n;
2496
2497 if (hists__has(hists, need_collapse))
2498 n = hists->entries_collapsed.rb_root.rb_node;
2499 else
2500 n = hists->entries_in->rb_root.rb_node;
2501
2502 while (n) {
2503 struct hist_entry *iter = rb_entry(n, struct hist_entry, rb_node_in);
2504 int64_t cmp = hist_entry__collapse(iter, he);
2505
2506 if (cmp < 0)
2507 n = n->rb_left;
2508 else if (cmp > 0)
2509 n = n->rb_right;
2510 else
2511 return iter;
2512 }
2513
2514 return NULL;
2515 }
2516
2517 static struct hist_entry *hists__find_hierarchy_entry(struct rb_root_cached *root,
2518 struct hist_entry *he)
2519 {
2520 struct rb_node *n = root->rb_root.rb_node;
2521
2522 while (n) {
2523 struct hist_entry *iter;
2524 struct perf_hpp_fmt *fmt;
2525 int64_t cmp = 0;
2526
2527 iter = rb_entry(n, struct hist_entry, rb_node_in);
2528 perf_hpp_list__for_each_sort_list(he->hpp_list, fmt) {
2529 cmp = fmt->collapse(fmt, iter, he);
2530 if (cmp)
2531 break;
2532 }
2533
2534 if (cmp < 0)
2535 n = n->rb_left;
2536 else if (cmp > 0)
2537 n = n->rb_right;
2538 else
2539 return iter;
2540 }
2541
2542 return NULL;
2543 }
2544
2545 static void hists__match_hierarchy(struct rb_root_cached *leader_root,
2546 struct rb_root_cached *other_root)
2547 {
2548 struct rb_node *nd;
2549 struct hist_entry *pos, *pair;
2550
2551 for (nd = rb_first_cached(leader_root); nd; nd = rb_next(nd)) {
2552 pos = rb_entry(nd, struct hist_entry, rb_node_in);
2553 pair = hists__find_hierarchy_entry(other_root, pos);
2554
2555 if (pair) {
2556 hist_entry__add_pair(pair, pos);
2557 hists__match_hierarchy(&pos->hroot_in, &pair->hroot_in);
2558 }
2559 }
2560 }
2561
2562 /*
2563 * Look for pairs to link to the leader buckets (hist_entries):
2564 */
2565 void hists__match(struct hists *leader, struct hists *other)
2566 {
2567 struct rb_root_cached *root;
2568 struct rb_node *nd;
2569 struct hist_entry *pos, *pair;
2570
2571 if (symbol_conf.report_hierarchy) {
2572 /* hierarchy report always collapses entries */
2573 return hists__match_hierarchy(&leader->entries_collapsed,
2574 &other->entries_collapsed);
2575 }
2576
2577 if (hists__has(leader, need_collapse))
2578 root = &leader->entries_collapsed;
2579 else
2580 root = leader->entries_in;
2581
2582 for (nd = rb_first_cached(root); nd; nd = rb_next(nd)) {
2583 pos = rb_entry(nd, struct hist_entry, rb_node_in);
2584 pair = hists__find_entry(other, pos);
2585
2586 if (pair)
2587 hist_entry__add_pair(pair, pos);
2588 }
2589 }
2590
2591 static int hists__link_hierarchy(struct hists *leader_hists,
2592 struct hist_entry *parent,
2593 struct rb_root_cached *leader_root,
2594 struct rb_root_cached *other_root)
2595 {
2596 struct rb_node *nd;
2597 struct hist_entry *pos, *leader;
2598
2599 for (nd = rb_first_cached(other_root); nd; nd = rb_next(nd)) {
2600 pos = rb_entry(nd, struct hist_entry, rb_node_in);
2601
2602 if (hist_entry__has_pairs(pos)) {
2603 bool found = false;
2604
2605 list_for_each_entry(leader, &pos->pairs.head, pairs.node) {
2606 if (leader->hists == leader_hists) {
2607 found = true;
2608 break;
2609 }
2610 }
2611 if (!found)
2612 return -1;
2613 } else {
2614 leader = add_dummy_hierarchy_entry(leader_hists,
2615 leader_root, pos);
2616 if (leader == NULL)
2617 return -1;
2618
2619 /* do not point parent in the pos */
2620 leader->parent_he = parent;
2621
2622 hist_entry__add_pair(pos, leader);
2623 }
2624
2625 if (!pos->leaf) {
2626 if (hists__link_hierarchy(leader_hists, leader,
2627 &leader->hroot_in,
2628 &pos->hroot_in) < 0)
2629 return -1;
2630 }
2631 }
2632 return 0;
2633 }
2634
2635 /*
2636 * Look for entries in the other hists that are not present in the leader, if
2637 * we find them, just add a dummy entry on the leader hists, with period=0,
2638 * nr_events=0, to serve as the list header.
2639 */
2640 int hists__link(struct hists *leader, struct hists *other)
2641 {
2642 struct rb_root_cached *root;
2643 struct rb_node *nd;
2644 struct hist_entry *pos, *pair;
2645
2646 if (symbol_conf.report_hierarchy) {
2647 /* hierarchy report always collapses entries */
2648 return hists__link_hierarchy(leader, NULL,
2649 &leader->entries_collapsed,
2650 &other->entries_collapsed);
2651 }
2652
2653 if (hists__has(other, need_collapse))
2654 root = &other->entries_collapsed;
2655 else
2656 root = other->entries_in;
2657
2658 for (nd = rb_first_cached(root); nd; nd = rb_next(nd)) {
2659 pos = rb_entry(nd, struct hist_entry, rb_node_in);
2660
2661 if (!hist_entry__has_pairs(pos)) {
2662 pair = hists__add_dummy_entry(leader, pos);
2663 if (pair == NULL)
2664 return -1;
2665 hist_entry__add_pair(pos, pair);
2666 }
2667 }
2668
2669 return 0;
2670 }
2671
2672 int hists__unlink(struct hists *hists)
2673 {
2674 struct rb_root_cached *root;
2675 struct rb_node *nd;
2676 struct hist_entry *pos;
2677
2678 if (hists__has(hists, need_collapse))
2679 root = &hists->entries_collapsed;
2680 else
2681 root = hists->entries_in;
2682
2683 for (nd = rb_first_cached(root); nd; nd = rb_next(nd)) {
2684 pos = rb_entry(nd, struct hist_entry, rb_node_in);
2685 list_del_init(&pos->pairs.node);
2686 }
2687
2688 return 0;
2689 }
2690
2691 void hist__account_cycles(struct branch_stack *bs, struct addr_location *al,
2692 struct perf_sample *sample, bool nonany_branch_mode,
2693 u64 *total_cycles, struct evsel *evsel)
2694 {
2695 struct branch_info *bi;
2696 struct branch_entry *entries = perf_sample__branch_entries(sample);
2697
2698 /* If we have branch cycles always annotate them. */
2699 if (bs && bs->nr && entries[0].flags.cycles) {
2700 bi = sample__resolve_bstack(sample, al);
2701 if (bi) {
2702 struct addr_map_symbol *prev = NULL;
2703
2704 /*
2705 * Ignore errors, still want to process the
2706 * other entries.
2707 *
2708 * For non standard branch modes always
2709 * force no IPC (prev == NULL)
2710 *
2711 * Note that perf stores branches reversed from
2712 * program order!
2713 */
2714 for (int i = bs->nr - 1; i >= 0; i--) {
2715 addr_map_symbol__account_cycles(&bi[i].from,
2716 nonany_branch_mode ? NULL : prev,
2717 bi[i].flags.cycles, evsel,
2718 bi[i].branch_stack_cntr);
2719 prev = &bi[i].to;
2720
2721 if (total_cycles)
2722 *total_cycles += bi[i].flags.cycles;
2723 }
2724 for (unsigned int i = 0; i < bs->nr; i++) {
2725 map_symbol__exit(&bi[i].to.ms);
2726 map_symbol__exit(&bi[i].from.ms);
2727 }
2728 free(bi);
2729 }
2730 }
2731 }
2732
2733 size_t evlist__fprintf_nr_events(struct evlist *evlist, FILE *fp)
2734 {
2735 struct evsel *pos;
2736 size_t ret = 0;
2737
2738 evlist__for_each_entry(evlist, pos) {
2739 struct hists *hists = evsel__hists(pos);
2740 u64 total_samples = hists->stats.nr_samples;
2741
2742 total_samples += hists->stats.nr_lost_samples;
2743 total_samples += hists->stats.nr_dropped_samples;
2744
2745 if (symbol_conf.skip_empty && total_samples == 0)
2746 continue;
2747
2748 ret += fprintf(fp, "%s stats:\n", evsel__name(pos));
2749 if (hists->stats.nr_samples)
2750 ret += fprintf(fp, "%20s events: %10d\n",
2751 "SAMPLE", hists->stats.nr_samples);
2752 if (hists->stats.nr_lost_samples)
2753 ret += fprintf(fp, "%20s events: %10d\n",
2754 "LOST_SAMPLES", hists->stats.nr_lost_samples);
2755 if (hists->stats.nr_dropped_samples)
2756 ret += fprintf(fp, "%20s events: %10d\n",
2757 "LOST_SAMPLES (BPF)", hists->stats.nr_dropped_samples);
2758 }
2759
2760 return ret;
2761 }
2762
2763
2764 u64 hists__total_period(struct hists *hists)
2765 {
2766 return symbol_conf.filter_relative ? hists->stats.total_non_filtered_period :
2767 hists->stats.total_period;
2768 }
2769
2770 int __hists__scnprintf_title(struct hists *hists, char *bf, size_t size, bool show_freq)
2771 {
2772 char unit;
2773 int printed;
2774 const struct dso *dso = hists->dso_filter;
2775 struct thread *thread = hists->thread_filter;
2776 int socket_id = hists->socket_filter;
2777 unsigned long nr_samples = hists->stats.nr_samples;
2778 u64 nr_events = hists->stats.total_period;
2779 struct evsel *evsel = hists_to_evsel(hists);
2780 const char *ev_name = evsel__name(evsel);
2781 char buf[512], sample_freq_str[64] = "";
2782 size_t buflen = sizeof(buf);
2783 char ref[30] = " show reference callgraph, ";
2784 bool enable_ref = false;
2785
2786 if (symbol_conf.filter_relative) {
2787 nr_samples = hists->stats.nr_non_filtered_samples;
2788 nr_events = hists->stats.total_non_filtered_period;
2789 }
2790
2791 if (evsel__is_group_event(evsel)) {
2792 struct evsel *pos;
2793
2794 evsel__group_desc(evsel, buf, buflen);
2795 ev_name = buf;
2796
2797 for_each_group_member(pos, evsel) {
2798 struct hists *pos_hists = evsel__hists(pos);
2799
2800 if (symbol_conf.filter_relative) {
2801 nr_samples += pos_hists->stats.nr_non_filtered_samples;
2802 nr_events += pos_hists->stats.total_non_filtered_period;
2803 } else {
2804 nr_samples += pos_hists->stats.nr_samples;
2805 nr_events += pos_hists->stats.total_period;
2806 }
2807 }
2808 }
2809
2810 if (symbol_conf.show_ref_callgraph &&
2811 strstr(ev_name, "call-graph=no"))
2812 enable_ref = true;
2813
2814 if (show_freq)
2815 scnprintf(sample_freq_str, sizeof(sample_freq_str), " %d Hz,", evsel->core.attr.sample_freq);
2816
2817 nr_samples = convert_unit(nr_samples, &unit);
2818 printed = scnprintf(bf, size,
2819 "Samples: %lu%c of event%s '%s',%s%sEvent count (approx.): %" PRIu64,
2820 nr_samples, unit, evsel->core.nr_members > 1 ? "s" : "",
2821 ev_name, sample_freq_str, enable_ref ? ref : " ", nr_events);
2822
2823
2824 if (hists->uid_filter_str)
2825 printed += snprintf(bf + printed, size - printed,
2826 ", UID: %s", hists->uid_filter_str);
2827 if (thread) {
2828 if (hists__has(hists, thread)) {
2829 printed += scnprintf(bf + printed, size - printed,
2830 ", Thread: %s(%d)",
2831 (thread__comm_set(thread) ? thread__comm_str(thread) : ""),
2832 thread__tid(thread));
2833 } else {
2834 printed += scnprintf(bf + printed, size - printed,
2835 ", Thread: %s",
2836 (thread__comm_set(thread) ? thread__comm_str(thread) : ""));
2837 }
2838 }
2839 if (dso)
2840 printed += scnprintf(bf + printed, size - printed,
2841 ", DSO: %s", dso__short_name(dso));
2842 if (socket_id > -1)
2843 printed += scnprintf(bf + printed, size - printed,
2844 ", Processor Socket: %d", socket_id);
2845
2846 return printed;
2847 }
2848
2849 int parse_filter_percentage(const struct option *opt __maybe_unused,
2850 const char *arg, int unset __maybe_unused)
2851 {
2852 if (!strcmp(arg, "relative"))
2853 symbol_conf.filter_relative = true;
2854 else if (!strcmp(arg, "absolute"))
2855 symbol_conf.filter_relative = false;
2856 else {
2857 pr_debug("Invalid percentage: %s\n", arg);
2858 return -1;
2859 }
2860
2861 return 0;
2862 }
2863
2864 int perf_hist_config(const char *var, const char *value)
2865 {
2866 if (!strcmp(var, "hist.percentage"))
2867 return parse_filter_percentage(NULL, value, 0);
2868
2869 return 0;
2870 }
2871
2872 int __hists__init(struct hists *hists, struct perf_hpp_list *hpp_list)
2873 {
2874 memset(hists, 0, sizeof(*hists));
2875 hists->entries_in_array[0] = hists->entries_in_array[1] = RB_ROOT_CACHED;
2876 hists->entries_in = &hists->entries_in_array[0];
2877 hists->entries_collapsed = RB_ROOT_CACHED;
2878 hists->entries = RB_ROOT_CACHED;
2879 mutex_init(&hists->lock);
2880 hists->socket_filter = -1;
2881 hists->hpp_list = hpp_list;
2882 INIT_LIST_HEAD(&hists->hpp_formats);
2883 return 0;
2884 }
2885
2886 static void hists__delete_remaining_entries(struct rb_root_cached *root)
2887 {
2888 struct rb_node *node;
2889 struct hist_entry *he;
2890
2891 while (!RB_EMPTY_ROOT(&root->rb_root)) {
2892 node = rb_first_cached(root);
2893 rb_erase_cached(node, root);
2894
2895 he = rb_entry(node, struct hist_entry, rb_node_in);
2896 hist_entry__delete(he);
2897 }
2898 }
2899
2900 static void hists__delete_all_entries(struct hists *hists)
2901 {
2902 hists__delete_entries(hists);
2903 hists__delete_remaining_entries(&hists->entries_in_array[0]);
2904 hists__delete_remaining_entries(&hists->entries_in_array[1]);
2905 hists__delete_remaining_entries(&hists->entries_collapsed);
2906 }
2907
2908 static void hists_evsel__exit(struct evsel *evsel)
2909 {
2910 struct hists *hists = evsel__hists(evsel);
2911 struct perf_hpp_fmt *fmt, *pos;
2912 struct perf_hpp_list_node *node, *tmp;
2913
2914 hists__delete_all_entries(hists);
2915
2916 list_for_each_entry_safe(node, tmp, &hists->hpp_formats, list) {
2917 perf_hpp_list__for_each_format_safe(&node->hpp, fmt, pos) {
2918 list_del_init(&fmt->list);
2919 free(fmt);
2920 }
2921 list_del_init(&node->list);
2922 free(node);
2923 }
2924 }
2925
2926 static int hists_evsel__init(struct evsel *evsel)
2927 {
2928 struct hists *hists = evsel__hists(evsel);
2929
2930 __hists__init(hists, &perf_hpp_list);
2931 return 0;
2932 }
2933
2934 /*
2935 * XXX We probably need a hists_evsel__exit() to free the hist_entries
2936 * stored in the rbtree...
2937 */
2938
2939 int hists__init(void)
2940 {
2941 int err = evsel__object_config(sizeof(struct hists_evsel),
2942 hists_evsel__init, hists_evsel__exit);
2943 if (err)
2944 fputs("FATAL ERROR: Couldn't setup hists class\n", stderr);
2945
2946 return err;
2947 }
2948
2949 void perf_hpp_list__init(struct perf_hpp_list *list)
2950 {
2951 INIT_LIST_HEAD(&list->fields);
2952 INIT_LIST_HEAD(&list->sorts);
2953 }
Kernel DRM miscellaneous fixes and cross-tree changes