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perf session: Change header.misc dump from decimal to hex
[deliverable/linux.git] / tools / perf / util / machine.c
CommitLineData
3f067dca 1#include "callchain.h"
b0a7d1a0
ACM		 2#include "debug.h"
3#include "event.h"
3f067dca
ACM		 4#include "evsel.h"
5#include "hist.h"
9d2f8e22
ACM		 6#include "machine.h"
7#include "map.h"
3f067dca 8#include "sort.h"
69d2591a 9#include "strlist.h"
9d2f8e22
ACM		 10#include "thread.h"
11#include <stdbool.h>
c506c96b 12#include <symbol/kallsyms.h>
3f067dca 13#include "unwind.h"
9d2f8e22 14
69d2591a
ACM		 15int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
16{
17 map_groups__init(&machine->kmaps);
18 RB_CLEAR_NODE(&machine->rb_node);
19 INIT_LIST_HEAD(&machine->user_dsos);
20 INIT_LIST_HEAD(&machine->kernel_dsos);
21
22 machine->threads = RB_ROOT;
23 INIT_LIST_HEAD(&machine->dead_threads);
24 machine->last_match = NULL;
25
26 machine->kmaps.machine = machine;
27 machine->pid = pid;
28
611a5ce8 29 machine->symbol_filter = NULL;
14bd6d20 30 machine->id_hdr_size = 0;
611a5ce8 31
69d2591a
ACM		 32 machine->root_dir = strdup(root_dir);
33 if (machine->root_dir == NULL)
34 return -ENOMEM;
35
36 if (pid != HOST_KERNEL_ID) {
314add6b
AH		 37 struct thread *thread = machine__findnew_thread(machine, 0,
38 pid);
69d2591a
ACM		 39 char comm[64];
40
41 if (thread == NULL)
42 return -ENOMEM;
43
44 snprintf(comm, sizeof(comm), "[guest/%d]", pid);
162f0bef 45 thread__set_comm(thread, comm, 0);
69d2591a
ACM		 46 }
47
48 return 0;
49}
50
8fb598e5
DA		 51struct machine *machine__new_host(void)
52{
53 struct machine *machine = malloc(sizeof(*machine));
54
55 if (machine != NULL) {
56 machine__init(machine, "", HOST_KERNEL_ID);
57
58 if (machine__create_kernel_maps(machine) < 0)
59 goto out_delete;
60 }
61
62 return machine;
63out_delete:
64 free(machine);
65 return NULL;
66}
67
69d2591a
ACM		 68static void dsos__delete(struct list_head *dsos)
69{
70 struct dso *pos, *n;
71
72 list_for_each_entry_safe(pos, n, dsos, node) {
73 list_del(&pos->node);
74 dso__delete(pos);
75 }
76}
77
3f067dca
ACM		 78void machine__delete_dead_threads(struct machine *machine)
79{
80 struct thread *n, *t;
81
82 list_for_each_entry_safe(t, n, &machine->dead_threads, node) {
83 list_del(&t->node);
84 thread__delete(t);
85 }
86}
87
88void machine__delete_threads(struct machine *machine)
89{
90 struct rb_node *nd = rb_first(&machine->threads);
91
92 while (nd) {
93 struct thread *t = rb_entry(nd, struct thread, rb_node);
94
95 rb_erase(&t->rb_node, &machine->threads);
96 nd = rb_next(nd);
97 thread__delete(t);
98 }
99}
100
69d2591a
ACM		 101void machine__exit(struct machine *machine)
102{
103 map_groups__exit(&machine->kmaps);
104 dsos__delete(&machine->user_dsos);
105 dsos__delete(&machine->kernel_dsos);
04662523 106 zfree(&machine->root_dir);
69d2591a
ACM		 107}
108
109void machine__delete(struct machine *machine)
110{
111 machine__exit(machine);
112 free(machine);
113}
114
876650e6
ACM		 115void machines__init(struct machines *machines)
116{
117 machine__init(&machines->host, "", HOST_KERNEL_ID);
118 machines->guests = RB_ROOT;
611a5ce8 119 machines->symbol_filter = NULL;
876650e6
ACM		 120}
121
122void machines__exit(struct machines *machines)
123{
124 machine__exit(&machines->host);
125 /* XXX exit guest */
126}
127
128struct machine *machines__add(struct machines *machines, pid_t pid,
69d2591a
ACM		 129 const char *root_dir)
130{
876650e6 131 struct rb_node **p = &machines->guests.rb_node;
69d2591a
ACM		 132 struct rb_node *parent = NULL;
133 struct machine *pos, *machine = malloc(sizeof(*machine));
134
135 if (machine == NULL)
136 return NULL;
137
138 if (machine__init(machine, root_dir, pid) != 0) {
139 free(machine);
140 return NULL;
141 }
142
611a5ce8
AH		 143 machine->symbol_filter = machines->symbol_filter;
144
69d2591a
ACM		 145 while (*p != NULL) {
146 parent = *p;
147 pos = rb_entry(parent, struct machine, rb_node);
148 if (pid < pos->pid)
149 p = &(*p)->rb_left;
150 else
151 p = &(*p)->rb_right;
152 }
153
154 rb_link_node(&machine->rb_node, parent, p);
876650e6 155 rb_insert_color(&machine->rb_node, &machines->guests);
69d2591a
ACM		 156
157 return machine;
158}
159
611a5ce8
AH		 160void machines__set_symbol_filter(struct machines *machines,
161 symbol_filter_t symbol_filter)
162{
163 struct rb_node *nd;
164
165 machines->symbol_filter = symbol_filter;
166 machines->host.symbol_filter = symbol_filter;
167
168 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
169 struct machine *machine = rb_entry(nd, struct machine, rb_node);
170
171 machine->symbol_filter = symbol_filter;
172 }
173}
174
876650e6 175struct machine *machines__find(struct machines *machines, pid_t pid)
69d2591a 176{
876650e6 177 struct rb_node **p = &machines->guests.rb_node;
69d2591a
ACM		 178 struct rb_node *parent = NULL;
179 struct machine *machine;
180 struct machine *default_machine = NULL;
181
876650e6
ACM		 182 if (pid == HOST_KERNEL_ID)
183 return &machines->host;
184
69d2591a
ACM		 185 while (*p != NULL) {
186 parent = *p;
187 machine = rb_entry(parent, struct machine, rb_node);
188 if (pid < machine->pid)
189 p = &(*p)->rb_left;
190 else if (pid > machine->pid)
191 p = &(*p)->rb_right;
192 else
193 return machine;
194 if (!machine->pid)
195 default_machine = machine;
196 }
197
198 return default_machine;
199}
200
876650e6 201struct machine *machines__findnew(struct machines *machines, pid_t pid)
69d2591a
ACM		 202{
203 char path[PATH_MAX];
204 const char *root_dir = "";
205 struct machine *machine = machines__find(machines, pid);
206
207 if (machine && (machine->pid == pid))
208 goto out;
209
210 if ((pid != HOST_KERNEL_ID) &&
211 (pid != DEFAULT_GUEST_KERNEL_ID) &&
212 (symbol_conf.guestmount)) {
213 sprintf(path, "%s/%d", symbol_conf.guestmount, pid);
214 if (access(path, R_OK)) {
215 static struct strlist *seen;
216
217 if (!seen)
218 seen = strlist__new(true, NULL);
219
220 if (!strlist__has_entry(seen, path)) {
221 pr_err("Can't access file %s\n", path);
222 strlist__add(seen, path);
223 }
224 machine = NULL;
225 goto out;
226 }
227 root_dir = path;
228 }
229
230 machine = machines__add(machines, pid, root_dir);
231out:
232 return machine;
233}
234
876650e6
ACM		 235void machines__process_guests(struct machines *machines,
236 machine__process_t process, void *data)
69d2591a
ACM		 237{
238 struct rb_node *nd;
239
876650e6 240 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
69d2591a
ACM		 241 struct machine *pos = rb_entry(nd, struct machine, rb_node);
242 process(pos, data);
243 }
244}
245
246char *machine__mmap_name(struct machine *machine, char *bf, size_t size)
247{
248 if (machine__is_host(machine))
249 snprintf(bf, size, "[%s]", "kernel.kallsyms");
250 else if (machine__is_default_guest(machine))
251 snprintf(bf, size, "[%s]", "guest.kernel.kallsyms");
252 else {
253 snprintf(bf, size, "[%s.%d]", "guest.kernel.kallsyms",
254 machine->pid);
255 }
256
257 return bf;
258}
259
876650e6 260void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size)
69d2591a
ACM		 261{
262 struct rb_node *node;
263 struct machine *machine;
264
876650e6
ACM		 265 machines->host.id_hdr_size = id_hdr_size;
266
267 for (node = rb_first(&machines->guests); node; node = rb_next(node)) {
69d2591a
ACM		 268 machine = rb_entry(node, struct machine, rb_node);
269 machine->id_hdr_size = id_hdr_size;
270 }
271
272 return;
273}
274
99d725fc
AH		 275static struct thread *__machine__findnew_thread(struct machine *machine,
276 pid_t pid, pid_t tid,
9d2f8e22
ACM		 277 bool create)
278{
279 struct rb_node **p = &machine->threads.rb_node;
280 struct rb_node *parent = NULL;
281 struct thread *th;
282
283 /*
38051234 284 * Front-end cache - TID lookups come in blocks,
9d2f8e22
ACM		 285 * so most of the time we dont have to look up
286 * the full rbtree:
287 */
99d725fc
AH		 288 if (machine->last_match && machine->last_match->tid == tid) {
289 if (pid && pid != machine->last_match->pid_)
290 machine->last_match->pid_ = pid;
9d2f8e22 291 return machine->last_match;
99d725fc 292 }
9d2f8e22
ACM		 293
294 while (*p != NULL) {
295 parent = *p;
296 th = rb_entry(parent, struct thread, rb_node);
297
38051234 298 if (th->tid == tid) {
9d2f8e22 299 machine->last_match = th;
99d725fc
AH		 300 if (pid && pid != th->pid_)
301 th->pid_ = pid;
9d2f8e22
ACM		 302 return th;
303 }
304
38051234 305 if (tid < th->tid)
9d2f8e22
ACM		 306 p = &(*p)->rb_left;
307 else
308 p = &(*p)->rb_right;
309 }
310
311 if (!create)
312 return NULL;
313
99d725fc 314 th = thread__new(pid, tid);
9d2f8e22
ACM		 315 if (th != NULL) {
316 rb_link_node(&th->rb_node, parent, p);
317 rb_insert_color(&th->rb_node, &machine->threads);
318 machine->last_match = th;
319 }
320
321 return th;
322}
323
314add6b
AH		 324struct thread *machine__findnew_thread(struct machine *machine, pid_t pid,
325 pid_t tid)
9d2f8e22 326{
314add6b 327 return __machine__findnew_thread(machine, pid, tid, true);
9d2f8e22
ACM		 328}
329
38051234 330struct thread *machine__find_thread(struct machine *machine, pid_t tid)
9d2f8e22 331{
99d725fc 332 return __machine__findnew_thread(machine, 0, tid, false);
9d2f8e22 333}
b0a7d1a0 334
162f0bef
FW		 335int machine__process_comm_event(struct machine *machine, union perf_event *event,
336 struct perf_sample *sample)
b0a7d1a0 337{
314add6b
AH		 338 struct thread *thread = machine__findnew_thread(machine,
339 event->comm.pid,
340 event->comm.tid);
b0a7d1a0
ACM		 341
342 if (dump_trace)
343 perf_event__fprintf_comm(event, stdout);
344
162f0bef 345 if (thread == NULL || thread__set_comm(thread, event->comm.comm, sample->time)) {
b0a7d1a0
ACM		 346 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
347 return -1;
348 }
349
350 return 0;
351}
352
353int machine__process_lost_event(struct machine *machine __maybe_unused,
162f0bef 354 union perf_event *event, struct perf_sample *sample __maybe_unused)
b0a7d1a0
ACM		 355{
356 dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n",
357 event->lost.id, event->lost.lost);
358 return 0;
359}
360
3f067dca
ACM		 361struct map *machine__new_module(struct machine *machine, u64 start,
362 const char *filename)
363{
364 struct map *map;
365 struct dso *dso = __dsos__findnew(&machine->kernel_dsos, filename);
366
367 if (dso == NULL)
368 return NULL;
369
370 map = map__new2(start, dso, MAP__FUNCTION);
371 if (map == NULL)
372 return NULL;
373
374 if (machine__is_host(machine))
375 dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE;
376 else
377 dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE;
378 map_groups__insert(&machine->kmaps, map);
379 return map;
380}
381
876650e6 382size_t machines__fprintf_dsos(struct machines *machines, FILE *fp)
3f067dca
ACM		 383{
384 struct rb_node *nd;
876650e6
ACM		 385 size_t ret = __dsos__fprintf(&machines->host.kernel_dsos, fp) +
386 __dsos__fprintf(&machines->host.user_dsos, fp);
3f067dca 387
876650e6 388 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
3f067dca
ACM		 389 struct machine *pos = rb_entry(nd, struct machine, rb_node);
390 ret += __dsos__fprintf(&pos->kernel_dsos, fp);
391 ret += __dsos__fprintf(&pos->user_dsos, fp);
392 }
393
394 return ret;
395}
396
397size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp,
398 bool (skip)(struct dso *dso, int parm), int parm)
399{
400 return __dsos__fprintf_buildid(&machine->kernel_dsos, fp, skip, parm) +
401 __dsos__fprintf_buildid(&machine->user_dsos, fp, skip, parm);
402}
403
876650e6 404size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp,
3f067dca
ACM		 405 bool (skip)(struct dso *dso, int parm), int parm)
406{
407 struct rb_node *nd;
876650e6 408 size_t ret = machine__fprintf_dsos_buildid(&machines->host, fp, skip, parm);
3f067dca 409
876650e6 410 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
3f067dca
ACM		 411 struct machine *pos = rb_entry(nd, struct machine, rb_node);
412 ret += machine__fprintf_dsos_buildid(pos, fp, skip, parm);
413 }
414 return ret;
415}
416
417size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp)
418{
419 int i;
420 size_t printed = 0;
421 struct dso *kdso = machine->vmlinux_maps[MAP__FUNCTION]->dso;
422
423 if (kdso->has_build_id) {
424 char filename[PATH_MAX];
425 if (dso__build_id_filename(kdso, filename, sizeof(filename)))
426 printed += fprintf(fp, "[0] %s\n", filename);
427 }
428
429 for (i = 0; i < vmlinux_path__nr_entries; ++i)
430 printed += fprintf(fp, "[%d] %s\n",
431 i + kdso->has_build_id, vmlinux_path[i]);
432
433 return printed;
434}
435
436size_t machine__fprintf(struct machine *machine, FILE *fp)
437{
438 size_t ret = 0;
439 struct rb_node *nd;
440
441 for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) {
442 struct thread *pos = rb_entry(nd, struct thread, rb_node);
443
444 ret += thread__fprintf(pos, fp);
445 }
446
447 return ret;
448}
449
450static struct dso *machine__get_kernel(struct machine *machine)
451{
452 const char *vmlinux_name = NULL;
453 struct dso *kernel;
454
455 if (machine__is_host(machine)) {
456 vmlinux_name = symbol_conf.vmlinux_name;
457 if (!vmlinux_name)
458 vmlinux_name = "[kernel.kallsyms]";
459
460 kernel = dso__kernel_findnew(machine, vmlinux_name,
461 "[kernel]",
462 DSO_TYPE_KERNEL);
463 } else {
464 char bf[PATH_MAX];
465
466 if (machine__is_default_guest(machine))
467 vmlinux_name = symbol_conf.default_guest_vmlinux_name;
468 if (!vmlinux_name)
469 vmlinux_name = machine__mmap_name(machine, bf,
470 sizeof(bf));
471
472 kernel = dso__kernel_findnew(machine, vmlinux_name,
473 "[guest.kernel]",
474 DSO_TYPE_GUEST_KERNEL);
475 }
476
477 if (kernel != NULL && (!kernel->has_build_id))
478 dso__read_running_kernel_build_id(kernel, machine);
479
480 return kernel;
481}
482
483struct process_args {
484 u64 start;
485};
486
487static int symbol__in_kernel(void *arg, const char *name,
488 char type __maybe_unused, u64 start)
489{
490 struct process_args *args = arg;
491
492 if (strchr(name, '['))
493 return 0;
494
495 args->start = start;
496 return 1;
497}
498
15a0a870
AH		 499static void machine__get_kallsyms_filename(struct machine *machine, char *buf,
500 size_t bufsz)
501{
502 if (machine__is_default_guest(machine))
503 scnprintf(buf, bufsz, "%s", symbol_conf.default_guest_kallsyms);
504 else
505 scnprintf(buf, bufsz, "%s/proc/kallsyms", machine->root_dir);
506}
507
3f067dca
ACM		 508/* Figure out the start address of kernel map from /proc/kallsyms */
509static u64 machine__get_kernel_start_addr(struct machine *machine)
510{
15a0a870 511 char filename[PATH_MAX];
3f067dca
ACM		 512 struct process_args args;
513
15a0a870 514 machine__get_kallsyms_filename(machine, filename, PATH_MAX);
3f067dca
ACM		 515
516 if (symbol__restricted_filename(filename, "/proc/kallsyms"))
517 return 0;
518
519 if (kallsyms__parse(filename, &args, symbol__in_kernel) <= 0)
520 return 0;
521
522 return args.start;
523}
524
525int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel)
526{
527 enum map_type type;
528 u64 start = machine__get_kernel_start_addr(machine);
529
530 for (type = 0; type < MAP__NR_TYPES; ++type) {
531 struct kmap *kmap;
532
533 machine->vmlinux_maps[type] = map__new2(start, kernel, type);
534 if (machine->vmlinux_maps[type] == NULL)
535 return -1;
536
537 machine->vmlinux_maps[type]->map_ip =
538 machine->vmlinux_maps[type]->unmap_ip =
539 identity__map_ip;
540 kmap = map__kmap(machine->vmlinux_maps[type]);
541 kmap->kmaps = &machine->kmaps;
542 map_groups__insert(&machine->kmaps,
543 machine->vmlinux_maps[type]);
544 }
545
546 return 0;
547}
548
549void machine__destroy_kernel_maps(struct machine *machine)
550{
551 enum map_type type;
552
553 for (type = 0; type < MAP__NR_TYPES; ++type) {
554 struct kmap *kmap;
555
556 if (machine->vmlinux_maps[type] == NULL)
557 continue;
558
559 kmap = map__kmap(machine->vmlinux_maps[type]);
560 map_groups__remove(&machine->kmaps,
561 machine->vmlinux_maps[type]);
562 if (kmap->ref_reloc_sym) {
563 /*
564 * ref_reloc_sym is shared among all maps, so free just
565 * on one of them.
566 */
567 if (type == MAP__FUNCTION) {
04662523
ACM		 568 zfree((char **)&kmap->ref_reloc_sym->name);
569 zfree(&kmap->ref_reloc_sym);
570 } else
571 kmap->ref_reloc_sym = NULL;
3f067dca
ACM		 572 }
573
574 map__delete(machine->vmlinux_maps[type]);
575 machine->vmlinux_maps[type] = NULL;
576 }
577}
578
876650e6 579int machines__create_guest_kernel_maps(struct machines *machines)
3f067dca
ACM		 580{
581 int ret = 0;
582 struct dirent **namelist = NULL;
583 int i, items = 0;
584 char path[PATH_MAX];
585 pid_t pid;
586 char *endp;
587
588 if (symbol_conf.default_guest_vmlinux_name ||
589 symbol_conf.default_guest_modules ||
590 symbol_conf.default_guest_kallsyms) {
591 machines__create_kernel_maps(machines, DEFAULT_GUEST_KERNEL_ID);
592 }
593
594 if (symbol_conf.guestmount) {
595 items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL);
596 if (items <= 0)
597 return -ENOENT;
598 for (i = 0; i < items; i++) {
599 if (!isdigit(namelist[i]->d_name[0])) {
600 /* Filter out . and .. */
601 continue;
602 }
603 pid = (pid_t)strtol(namelist[i]->d_name, &endp, 10);
604 if ((*endp != '\0') ||
605 (endp == namelist[i]->d_name) ||
606 (errno == ERANGE)) {
607 pr_debug("invalid directory (%s). Skipping.\n",
608 namelist[i]->d_name);
609 continue;
610 }
611 sprintf(path, "%s/%s/proc/kallsyms",
612 symbol_conf.guestmount,
613 namelist[i]->d_name);
614 ret = access(path, R_OK);
615 if (ret) {
616 pr_debug("Can't access file %s\n", path);
617 goto failure;
618 }
619 machines__create_kernel_maps(machines, pid);
620 }
621failure:
622 free(namelist);
623 }
624
625 return ret;
626}
627
876650e6 628void machines__destroy_kernel_maps(struct machines *machines)
3f067dca 629{
876650e6
ACM		 630 struct rb_node *next = rb_first(&machines->guests);
631
632 machine__destroy_kernel_maps(&machines->host);
3f067dca
ACM		 633
634 while (next) {
635 struct machine *pos = rb_entry(next, struct machine, rb_node);
636
637 next = rb_next(&pos->rb_node);
876650e6 638 rb_erase(&pos->rb_node, &machines->guests);
3f067dca
ACM		 639 machine__delete(pos);
640 }
641}
642
876650e6 643int machines__create_kernel_maps(struct machines *machines, pid_t pid)
3f067dca
ACM		 644{
645 struct machine *machine = machines__findnew(machines, pid);
646
647 if (machine == NULL)
648 return -1;
649
650 return machine__create_kernel_maps(machine);
651}
652
653int machine__load_kallsyms(struct machine *machine, const char *filename,
654 enum map_type type, symbol_filter_t filter)
655{
656 struct map *map = machine->vmlinux_maps[type];
657 int ret = dso__load_kallsyms(map->dso, filename, map, filter);
658
659 if (ret > 0) {
660 dso__set_loaded(map->dso, type);
661 /*
662 * Since /proc/kallsyms will have multiple sessions for the
663 * kernel, with modules between them, fixup the end of all
664 * sections.
665 */
666 __map_groups__fixup_end(&machine->kmaps, type);
667 }
668
669 return ret;
670}
671
672int machine__load_vmlinux_path(struct machine *machine, enum map_type type,
673 symbol_filter_t filter)
674{
675 struct map *map = machine->vmlinux_maps[type];
676 int ret = dso__load_vmlinux_path(map->dso, map, filter);
677
39b12f78 678 if (ret > 0)
3f067dca 679 dso__set_loaded(map->dso, type);
3f067dca
ACM		 680
681 return ret;
682}
683
684static void map_groups__fixup_end(struct map_groups *mg)
685{
686 int i;
687 for (i = 0; i < MAP__NR_TYPES; ++i)
688 __map_groups__fixup_end(mg, i);
689}
690
691static char *get_kernel_version(const char *root_dir)
692{
693 char version[PATH_MAX];
694 FILE *file;
695 char *name, *tmp;
696 const char *prefix = "Linux version ";
697
698 sprintf(version, "%s/proc/version", root_dir);
699 file = fopen(version, "r");
700 if (!file)
701 return NULL;
702
703 version[0] = '\0';
704 tmp = fgets(version, sizeof(version), file);
705 fclose(file);
706
707 name = strstr(version, prefix);
708 if (!name)
709 return NULL;
710 name += strlen(prefix);
711 tmp = strchr(name, ' ');
712 if (tmp)
713 *tmp = '\0';
714
715 return strdup(name);
716}
717
718static int map_groups__set_modules_path_dir(struct map_groups *mg,
719 const char *dir_name)
720{
721 struct dirent *dent;
722 DIR *dir = opendir(dir_name);
723 int ret = 0;
724
725 if (!dir) {
726 pr_debug("%s: cannot open %s dir\n", __func__, dir_name);
727 return -1;
728 }
729
730 while ((dent = readdir(dir)) != NULL) {
731 char path[PATH_MAX];
732 struct stat st;
733
734 /*sshfs might return bad dent->d_type, so we have to stat*/
735 snprintf(path, sizeof(path), "%s/%s", dir_name, dent->d_name);
736 if (stat(path, &st))
737 continue;
738
739 if (S_ISDIR(st.st_mode)) {
740 if (!strcmp(dent->d_name, ".") ||
741 !strcmp(dent->d_name, ".."))
742 continue;
743
744 ret = map_groups__set_modules_path_dir(mg, path);
745 if (ret < 0)
746 goto out;
747 } else {
748 char *dot = strrchr(dent->d_name, '.'),
749 dso_name[PATH_MAX];
750 struct map *map;
751 char *long_name;
752
753 if (dot == NULL || strcmp(dot, ".ko"))
754 continue;
755 snprintf(dso_name, sizeof(dso_name), "[%.*s]",
756 (int)(dot - dent->d_name), dent->d_name);
757
758 strxfrchar(dso_name, '-', '_');
759 map = map_groups__find_by_name(mg, MAP__FUNCTION,
760 dso_name);
761 if (map == NULL)
762 continue;
763
764 long_name = strdup(path);
765 if (long_name == NULL) {
766 ret = -1;
767 goto out;
768 }
7e155d4d 769 dso__set_long_name(map->dso, long_name, true);
3f067dca
ACM		 770 dso__kernel_module_get_build_id(map->dso, "");
771 }
772 }
773
774out:
775 closedir(dir);
776 return ret;
777}
778
779static int machine__set_modules_path(struct machine *machine)
780{
781 char *version;
782 char modules_path[PATH_MAX];
783
784 version = get_kernel_version(machine->root_dir);
785 if (!version)
786 return -1;
787
788 snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s/kernel",
789 machine->root_dir, version);
790 free(version);
791
792 return map_groups__set_modules_path_dir(&machine->kmaps, modules_path);
793}
794
316d70d6 795static int machine__create_module(void *arg, const char *name, u64 start)
3f067dca 796{
316d70d6 797 struct machine *machine = arg;
3f067dca 798 struct map *map;
316d70d6
AH		 799
800 map = machine__new_module(machine, start, name);
801 if (map == NULL)
802 return -1;
803
804 dso__kernel_module_get_build_id(map->dso, machine->root_dir);
805
806 return 0;
807}
808
809static int machine__create_modules(struct machine *machine)
810{
3f067dca
ACM		 811 const char *modules;
812 char path[PATH_MAX];
813
f4be904d 814 if (machine__is_default_guest(machine)) {
3f067dca 815 modules = symbol_conf.default_guest_modules;
f4be904d
AH		 816 } else {
817 snprintf(path, PATH_MAX, "%s/proc/modules", machine->root_dir);
3f067dca
ACM		 818 modules = path;
819 }
820
aa7fe3b0 821 if (symbol__restricted_filename(modules, "/proc/modules"))
3f067dca
ACM		 822 return -1;
823
316d70d6 824 if (modules__parse(modules, machine, machine__create_module))
3f067dca
ACM		 825 return -1;
826
316d70d6
AH		 827 if (!machine__set_modules_path(machine))
828 return 0;
3f067dca 829
316d70d6 830 pr_debug("Problems setting modules path maps, continuing anyway...\n");
3f067dca 831
8f76fcd9 832 return 0;
3f067dca
ACM		 833}
834
5512cf24
AH		 835const char *ref_reloc_sym_names[] = {"_text", "_stext", NULL};
836
3f067dca
ACM		 837int machine__create_kernel_maps(struct machine *machine)
838{
839 struct dso *kernel = machine__get_kernel(machine);
5512cf24
AH		 840 char filename[PATH_MAX];
841 const char *name;
842 u64 addr = 0;
843 int i;
844
845 machine__get_kallsyms_filename(machine, filename, PATH_MAX);
846
847 for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) {
848 addr = kallsyms__get_function_start(filename, name);
849 if (addr)
850 break;
851 }
852 if (!addr)
853 return -1;
3f067dca
ACM		 854
855 if (kernel == NULL ||
856 __machine__create_kernel_maps(machine, kernel) < 0)
857 return -1;
858
859 if (symbol_conf.use_modules && machine__create_modules(machine) < 0) {
860 if (machine__is_host(machine))
861 pr_debug("Problems creating module maps, "
862 "continuing anyway...\n");
863 else
864 pr_debug("Problems creating module maps for guest %d, "
865 "continuing anyway...\n", machine->pid);
866 }
867
868 /*
869 * Now that we have all the maps created, just set the ->end of them:
870 */
871 map_groups__fixup_end(&machine->kmaps);
5512cf24
AH		 872
873 if (maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, name,
874 addr)) {
875 machine__destroy_kernel_maps(machine);
876 return -1;
877 }
878
3f067dca
ACM		 879 return 0;
880}
881
b0a7d1a0
ACM		 882static void machine__set_kernel_mmap_len(struct machine *machine,
883 union perf_event *event)
884{
4552cf0f
NK		 885 int i;
886
887 for (i = 0; i < MAP__NR_TYPES; i++) {
888 machine->vmlinux_maps[i]->start = event->mmap.start;
889 machine->vmlinux_maps[i]->end = (event->mmap.start +
890 event->mmap.len);
891 /*
892 * Be a bit paranoid here, some perf.data file came with
893 * a zero sized synthesized MMAP event for the kernel.
894 */
895 if (machine->vmlinux_maps[i]->end == 0)
896 machine->vmlinux_maps[i]->end = ~0ULL;
897 }
b0a7d1a0
ACM		 898}
899
8e0cf965
AH		 900static bool machine__uses_kcore(struct machine *machine)
901{
902 struct dso *dso;
903
904 list_for_each_entry(dso, &machine->kernel_dsos, node) {
905 if (dso__is_kcore(dso))
906 return true;
907 }
908
909 return false;
910}
911
b0a7d1a0
ACM		 912static int machine__process_kernel_mmap_event(struct machine *machine,
913 union perf_event *event)
914{
915 struct map *map;
916 char kmmap_prefix[PATH_MAX];
917 enum dso_kernel_type kernel_type;
918 bool is_kernel_mmap;
919
8e0cf965
AH		 920 /* If we have maps from kcore then we do not need or want any others */
921 if (machine__uses_kcore(machine))
922 return 0;
923
b0a7d1a0
ACM		 924 machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix));
925 if (machine__is_host(machine))
926 kernel_type = DSO_TYPE_KERNEL;
927 else
928 kernel_type = DSO_TYPE_GUEST_KERNEL;
929
930 is_kernel_mmap = memcmp(event->mmap.filename,
931 kmmap_prefix,
932 strlen(kmmap_prefix) - 1) == 0;
933 if (event->mmap.filename[0] == '/' ||
934 (!is_kernel_mmap && event->mmap.filename[0] == '[')) {
935
936 char short_module_name[1024];
937 char *name, *dot;
938
939 if (event->mmap.filename[0] == '/') {
940 name = strrchr(event->mmap.filename, '/');
941 if (name == NULL)
942 goto out_problem;
943
944 ++name; /* skip / */
945 dot = strrchr(name, '.');
946 if (dot == NULL)
947 goto out_problem;
948 snprintf(short_module_name, sizeof(short_module_name),
949 "[%.*s]", (int)(dot - name), name);
950 strxfrchar(short_module_name, '-', '_');
951 } else
952 strcpy(short_module_name, event->mmap.filename);
953
954 map = machine__new_module(machine, event->mmap.start,
955 event->mmap.filename);
956 if (map == NULL)
957 goto out_problem;
958
959 name = strdup(short_module_name);
960 if (name == NULL)
961 goto out_problem;
962
58a98c9c 963 dso__set_short_name(map->dso, name, true);
b0a7d1a0
ACM		 964 map->end = map->start + event->mmap.len;
965 } else if (is_kernel_mmap) {
966 const char *symbol_name = (event->mmap.filename +
967 strlen(kmmap_prefix));
968 /*
969 * Should be there already, from the build-id table in
970 * the header.
971 */
972 struct dso *kernel = __dsos__findnew(&machine->kernel_dsos,
973 kmmap_prefix);
974 if (kernel == NULL)
975 goto out_problem;
976
977 kernel->kernel = kernel_type;
978 if (__machine__create_kernel_maps(machine, kernel) < 0)
979 goto out_problem;
980
981 machine__set_kernel_mmap_len(machine, event);
982
983 /*
984 * Avoid using a zero address (kptr_restrict) for the ref reloc
985 * symbol. Effectively having zero here means that at record
986 * time /proc/sys/kernel/kptr_restrict was non zero.
987 */
988 if (event->mmap.pgoff != 0) {
989 maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps,
990 symbol_name,
991 event->mmap.pgoff);
992 }
993
994 if (machine__is_default_guest(machine)) {
995 /*
996 * preload dso of guest kernel and modules
997 */
998 dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION],
999 NULL);
1000 }
1001 }
1002 return 0;
1003out_problem:
1004 return -1;
1005}
1006
5c5e854b 1007int machine__process_mmap2_event(struct machine *machine,
162f0bef
FW		 1008 union perf_event *event,
1009 struct perf_sample *sample __maybe_unused)
5c5e854b
SE		 1010{
1011 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1012 struct thread *thread;
1013 struct map *map;
1014 enum map_type type;
1015 int ret = 0;
1016
1017 if (dump_trace)
1018 perf_event__fprintf_mmap2(event, stdout);
1019
1020 if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
1021 cpumode == PERF_RECORD_MISC_KERNEL) {
1022 ret = machine__process_kernel_mmap_event(machine, event);
1023 if (ret < 0)
1024 goto out_problem;
1025 return 0;
1026 }
1027
1028 thread = machine__findnew_thread(machine, event->mmap2.pid,
1029 event->mmap2.pid);
1030 if (thread == NULL)
1031 goto out_problem;
1032
1033 if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA)
1034 type = MAP__VARIABLE;
1035 else
1036 type = MAP__FUNCTION;
1037
1038 map = map__new(&machine->user_dsos, event->mmap2.start,
1039 event->mmap2.len, event->mmap2.pgoff,
1040 event->mmap2.pid, event->mmap2.maj,
1041 event->mmap2.min, event->mmap2.ino,
1042 event->mmap2.ino_generation,
1043 event->mmap2.filename, type);
1044
1045 if (map == NULL)
1046 goto out_problem;
1047
1048 thread__insert_map(thread, map);
1049 return 0;
1050
1051out_problem:
1052 dump_printf("problem processing PERF_RECORD_MMAP2, skipping event.\n");
1053 return 0;
1054}
1055
162f0bef
FW		 1056int machine__process_mmap_event(struct machine *machine, union perf_event *event,
1057 struct perf_sample *sample __maybe_unused)
b0a7d1a0
ACM		 1058{
1059 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1060 struct thread *thread;
1061 struct map *map;
bad40917 1062 enum map_type type;
b0a7d1a0
ACM		 1063 int ret = 0;
1064
1065 if (dump_trace)
1066 perf_event__fprintf_mmap(event, stdout);
1067
1068 if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
1069 cpumode == PERF_RECORD_MISC_KERNEL) {
1070 ret = machine__process_kernel_mmap_event(machine, event);
1071 if (ret < 0)
1072 goto out_problem;
1073 return 0;
1074 }
1075
314add6b
AH		 1076 thread = machine__findnew_thread(machine, event->mmap.pid,
1077 event->mmap.pid);
b0a7d1a0
ACM		 1078 if (thread == NULL)
1079 goto out_problem;
bad40917
SE		 1080
1081 if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA)
1082 type = MAP__VARIABLE;
1083 else
1084 type = MAP__FUNCTION;
1085
b0a7d1a0
ACM		 1086 map = map__new(&machine->user_dsos, event->mmap.start,
1087 event->mmap.len, event->mmap.pgoff,
5c5e854b
SE		 1088 event->mmap.pid, 0, 0, 0, 0,
1089 event->mmap.filename,
bad40917
SE		 1090 type);
1091
b0a7d1a0
ACM		 1092 if (map == NULL)
1093 goto out_problem;
1094
1095 thread__insert_map(thread, map);
1096 return 0;
1097
1098out_problem:
1099 dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n");
1100 return 0;
1101}
1102
236a3bbd
DA		 1103static void machine__remove_thread(struct machine *machine, struct thread *th)
1104{
1105 machine->last_match = NULL;
1106 rb_erase(&th->rb_node, &machine->threads);
1107 /*
1108 * We may have references to this thread, for instance in some hist_entry
1109 * instances, so just move them to a separate list.
1110 */
1111 list_add_tail(&th->node, &machine->dead_threads);
1112}
1113
162f0bef
FW		 1114int machine__process_fork_event(struct machine *machine, union perf_event *event,
1115 struct perf_sample *sample)
b0a7d1a0 1116{
236a3bbd 1117 struct thread *thread = machine__find_thread(machine, event->fork.tid);
314add6b
AH		 1118 struct thread *parent = machine__findnew_thread(machine,
1119 event->fork.ppid,
1120 event->fork.ptid);
b0a7d1a0 1121
236a3bbd
DA		 1122 /* if a thread currently exists for the thread id remove it */
1123 if (thread != NULL)
1124 machine__remove_thread(machine, thread);
1125
314add6b
AH		 1126 thread = machine__findnew_thread(machine, event->fork.pid,
1127 event->fork.tid);
b0a7d1a0
ACM		 1128 if (dump_trace)
1129 perf_event__fprintf_task(event, stdout);
1130
1131 if (thread == NULL || parent == NULL ||
162f0bef 1132 thread__fork(thread, parent, sample->time) < 0) {
b0a7d1a0
ACM		 1133 dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
1134 return -1;
1135 }
1136
1137 return 0;
1138}
1139
162f0bef
FW		 1140int machine__process_exit_event(struct machine *machine, union perf_event *event,
1141 struct perf_sample *sample __maybe_unused)
b0a7d1a0
ACM		 1142{
1143 struct thread *thread = machine__find_thread(machine, event->fork.tid);
1144
1145 if (dump_trace)
1146 perf_event__fprintf_task(event, stdout);
1147
1148 if (thread != NULL)
236a3bbd 1149 thread__exited(thread);
b0a7d1a0
ACM		 1150
1151 return 0;
1152}
1153
162f0bef
FW		 1154int machine__process_event(struct machine *machine, union perf_event *event,
1155 struct perf_sample *sample)
b0a7d1a0
ACM		 1156{
1157 int ret;
1158
1159 switch (event->header.type) {
1160 case PERF_RECORD_COMM:
162f0bef 1161 ret = machine__process_comm_event(machine, event, sample); break;
b0a7d1a0 1162 case PERF_RECORD_MMAP:
162f0bef 1163 ret = machine__process_mmap_event(machine, event, sample); break;
5c5e854b 1164 case PERF_RECORD_MMAP2:
162f0bef 1165 ret = machine__process_mmap2_event(machine, event, sample); break;
b0a7d1a0 1166 case PERF_RECORD_FORK:
162f0bef 1167 ret = machine__process_fork_event(machine, event, sample); break;
b0a7d1a0 1168 case PERF_RECORD_EXIT:
162f0bef 1169 ret = machine__process_exit_event(machine, event, sample); break;
b0a7d1a0 1170 case PERF_RECORD_LOST:
162f0bef 1171 ret = machine__process_lost_event(machine, event, sample); break;
b0a7d1a0
ACM		 1172 default:
1173 ret = -1;
1174 break;
1175 }
1176
1177 return ret;
1178}
3f067dca 1179
b21484f1 1180static bool symbol__match_regex(struct symbol *sym, regex_t *regex)
3f067dca 1181{
b21484f1 1182 if (sym->name && !regexec(regex, sym->name, 0, NULL, 0))
3f067dca 1183 return 1;
3f067dca
ACM		 1184 return 0;
1185}
1186
1187static const u8 cpumodes[] = {
1188 PERF_RECORD_MISC_USER,
1189 PERF_RECORD_MISC_KERNEL,
1190 PERF_RECORD_MISC_GUEST_USER,
1191 PERF_RECORD_MISC_GUEST_KERNEL
1192};
1193#define NCPUMODES (sizeof(cpumodes)/sizeof(u8))
1194
1195static void ip__resolve_ams(struct machine *machine, struct thread *thread,
1196 struct addr_map_symbol *ams,
1197 u64 ip)
1198{
1199 struct addr_location al;
1200 size_t i;
1201 u8 m;
1202
1203 memset(&al, 0, sizeof(al));
1204
1205 for (i = 0; i < NCPUMODES; i++) {
1206 m = cpumodes[i];
1207 /*
1208 * We cannot use the header.misc hint to determine whether a
1209 * branch stack address is user, kernel, guest, hypervisor.
1210 * Branches may straddle the kernel/user/hypervisor boundaries.
1211 * Thus, we have to try consecutively until we find a match
1212 * or else, the symbol is unknown
1213 */
1214 thread__find_addr_location(thread, machine, m, MAP__FUNCTION,
61710bde 1215 ip, &al);
fdf57dd0 1216 if (al.map)
3f067dca
ACM		 1217 goto found;
1218 }
1219found:
1220 ams->addr = ip;
1221 ams->al_addr = al.addr;
1222 ams->sym = al.sym;
1223 ams->map = al.map;
1224}
1225
98a3b32c
SE		 1226static void ip__resolve_data(struct machine *machine, struct thread *thread,
1227 u8 m, struct addr_map_symbol *ams, u64 addr)
1228{
1229 struct addr_location al;
1230
1231 memset(&al, 0, sizeof(al));
1232
61710bde
AH		 1233 thread__find_addr_location(thread, machine, m, MAP__VARIABLE, addr,
1234 &al);
98a3b32c
SE		 1235 ams->addr = addr;
1236 ams->al_addr = al.addr;
1237 ams->sym = al.sym;
1238 ams->map = al.map;
1239}
1240
e80faac0
ACM		 1241struct mem_info *sample__resolve_mem(struct perf_sample *sample,
1242 struct addr_location *al)
98a3b32c
SE		 1243{
1244 struct mem_info *mi = zalloc(sizeof(*mi));
1245
1246 if (!mi)
1247 return NULL;
1248
e80faac0
ACM		 1249 ip__resolve_ams(al->machine, al->thread, &mi->iaddr, sample->ip);
1250 ip__resolve_data(al->machine, al->thread, al->cpumode,
1251 &mi->daddr, sample->addr);
98a3b32c
SE		 1252 mi->data_src.val = sample->data_src;
1253
1254 return mi;
1255}
1256
644f2df2
ACM		 1257struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
1258 struct addr_location *al)
3f067dca 1259{
3f067dca 1260 unsigned int i;
644f2df2
ACM		 1261 const struct branch_stack *bs = sample->branch_stack;
1262 struct branch_info *bi = calloc(bs->nr, sizeof(struct branch_info));
3f067dca 1263
3f067dca
ACM		 1264 if (!bi)
1265 return NULL;
1266
1267 for (i = 0; i < bs->nr; i++) {
644f2df2
ACM		 1268 ip__resolve_ams(al->machine, al->thread, &bi[i].to, bs->entries[i].to);
1269 ip__resolve_ams(al->machine, al->thread, &bi[i].from, bs->entries[i].from);
3f067dca
ACM		 1270 bi[i].flags = bs->entries[i].flags;
1271 }
1272 return bi;
1273}
1274
1275static int machine__resolve_callchain_sample(struct machine *machine,
1276 struct thread *thread,
1277 struct ip_callchain *chain,
b21484f1 1278 struct symbol **parent,
91e95617
WL		 1279 struct addr_location *root_al,
1280 int max_stack)
3f067dca
ACM		 1281{
1282 u8 cpumode = PERF_RECORD_MISC_USER;
91e95617
WL		 1283 int chain_nr = min(max_stack, (int)chain->nr);
1284 int i;
3f067dca
ACM		 1285 int err;
1286
1287 callchain_cursor_reset(&callchain_cursor);
1288
1289 if (chain->nr > PERF_MAX_STACK_DEPTH) {
1290 pr_warning("corrupted callchain. skipping...\n");
1291 return 0;
1292 }
1293
91e95617 1294 for (i = 0; i < chain_nr; i++) {
3f067dca
ACM		 1295 u64 ip;
1296 struct addr_location al;
1297
1298 if (callchain_param.order == ORDER_CALLEE)
1299 ip = chain->ips[i];
1300 else
1301 ip = chain->ips[chain->nr - i - 1];
1302
1303 if (ip >= PERF_CONTEXT_MAX) {
1304 switch (ip) {
1305 case PERF_CONTEXT_HV:
1306 cpumode = PERF_RECORD_MISC_HYPERVISOR;
1307 break;
1308 case PERF_CONTEXT_KERNEL:
1309 cpumode = PERF_RECORD_MISC_KERNEL;
1310 break;
1311 case PERF_CONTEXT_USER:
1312 cpumode = PERF_RECORD_MISC_USER;
1313 break;
1314 default:
1315 pr_debug("invalid callchain context: "
1316 "%"PRId64"\n", (s64) ip);
1317 /*
1318 * It seems the callchain is corrupted.
1319 * Discard all.
1320 */
1321 callchain_cursor_reset(&callchain_cursor);
1322 return 0;
1323 }
1324 continue;
1325 }
1326
1327 al.filtered = false;
1328 thread__find_addr_location(thread, machine, cpumode,
61710bde 1329 MAP__FUNCTION, ip, &al);
3f067dca
ACM		 1330 if (al.sym != NULL) {
1331 if (sort__has_parent && !*parent &&
b21484f1 1332 symbol__match_regex(al.sym, &parent_regex))
3f067dca 1333 *parent = al.sym;
b21484f1
GP		 1334 else if (have_ignore_callees && root_al &&
1335 symbol__match_regex(al.sym, &ignore_callees_regex)) {
1336 /* Treat this symbol as the root,
1337 forgetting its callees. */
1338 *root_al = al;
1339 callchain_cursor_reset(&callchain_cursor);
1340 }
3f067dca
ACM		 1341 }
1342
1343 err = callchain_cursor_append(&callchain_cursor,
1344 ip, al.map, al.sym);
1345 if (err)
1346 return err;
1347 }
1348
1349 return 0;
1350}
1351
1352static int unwind_entry(struct unwind_entry *entry, void *arg)
1353{
1354 struct callchain_cursor *cursor = arg;
1355 return callchain_cursor_append(cursor, entry->ip,
1356 entry->map, entry->sym);
1357}
1358
1359int machine__resolve_callchain(struct machine *machine,
1360 struct perf_evsel *evsel,
1361 struct thread *thread,
1362 struct perf_sample *sample,
b21484f1 1363 struct symbol **parent,
91e95617
WL		 1364 struct addr_location *root_al,
1365 int max_stack)
3f067dca
ACM		 1366{
1367 int ret;
1368
3f067dca 1369 ret = machine__resolve_callchain_sample(machine, thread,
91e95617
WL		 1370 sample->callchain, parent,
1371 root_al, max_stack);
3f067dca
ACM		 1372 if (ret)
1373 return ret;
1374
1375 /* Can we do dwarf post unwind? */
1376 if (!((evsel->attr.sample_type & PERF_SAMPLE_REGS_USER) &&
1377 (evsel->attr.sample_type & PERF_SAMPLE_STACK_USER)))
1378 return 0;
1379
1380 /* Bail out if nothing was captured. */
1381 if ((!sample->user_regs.regs) ||
1382 (!sample->user_stack.size))
1383 return 0;
1384
1385 return unwind__get_entries(unwind_entry, &callchain_cursor, machine,
352ea45a 1386 thread, sample, max_stack);
3f067dca
ACM		 1387
1388}
35feee19
DA		 1389
1390int machine__for_each_thread(struct machine *machine,
1391 int (*fn)(struct thread *thread, void *p),
1392 void *priv)
1393{
1394 struct rb_node *nd;
1395 struct thread *thread;
1396 int rc = 0;
1397
1398 for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) {
1399 thread = rb_entry(nd, struct thread, rb_node);
1400 rc = fn(thread, priv);
1401 if (rc != 0)
1402 return rc;
1403 }
1404
1405 list_for_each_entry(thread, &machine->dead_threads, node) {
1406 rc = fn(thread, priv);
1407 if (rc != 0)
1408 return rc;
1409 }
1410 return rc;
1411}
58d925dc 1412
a33fbd56 1413int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool,
602ad878 1414 struct target *target, struct thread_map *threads,
a33fbd56 1415 perf_event__handler_t process, bool data_mmap)
58d925dc 1416{
602ad878 1417 if (target__has_task(target))
58d925dc 1418 return perf_event__synthesize_thread_map(tool, threads, process, machine, data_mmap);
602ad878 1419 else if (target__has_cpu(target))
58d925dc
ACM		 1420 return perf_event__synthesize_threads(tool, process, machine, data_mmap);
1421 /* command specified */
1422 return 0;
1423}
Linux kernel - Deliverables
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