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Commit | Line | Data |
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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 |
15 | int 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 AH |
29 | machine->symbol_filter = NULL; |
30 | ||
69d2591a ACM |
31 | machine->root_dir = strdup(root_dir); |
32 | if (machine->root_dir == NULL) | |
33 | return -ENOMEM; | |
34 | ||
35 | if (pid != HOST_KERNEL_ID) { | |
314add6b AH |
36 | struct thread *thread = machine__findnew_thread(machine, 0, |
37 | pid); | |
69d2591a ACM |
38 | char comm[64]; |
39 | ||
40 | if (thread == NULL) | |
41 | return -ENOMEM; | |
42 | ||
43 | snprintf(comm, sizeof(comm), "[guest/%d]", pid); | |
162f0bef | 44 | thread__set_comm(thread, comm, 0); |
69d2591a ACM |
45 | } |
46 | ||
47 | return 0; | |
48 | } | |
49 | ||
8fb598e5 DA |
50 | struct machine *machine__new_host(void) |
51 | { | |
52 | struct machine *machine = malloc(sizeof(*machine)); | |
53 | ||
54 | if (machine != NULL) { | |
55 | machine__init(machine, "", HOST_KERNEL_ID); | |
56 | ||
57 | if (machine__create_kernel_maps(machine) < 0) | |
58 | goto out_delete; | |
59 | } | |
60 | ||
61 | return machine; | |
62 | out_delete: | |
63 | free(machine); | |
64 | return NULL; | |
65 | } | |
66 | ||
69d2591a ACM |
67 | static void dsos__delete(struct list_head *dsos) |
68 | { | |
69 | struct dso *pos, *n; | |
70 | ||
71 | list_for_each_entry_safe(pos, n, dsos, node) { | |
72 | list_del(&pos->node); | |
73 | dso__delete(pos); | |
74 | } | |
75 | } | |
76 | ||
3f067dca ACM |
77 | void machine__delete_dead_threads(struct machine *machine) |
78 | { | |
79 | struct thread *n, *t; | |
80 | ||
81 | list_for_each_entry_safe(t, n, &machine->dead_threads, node) { | |
82 | list_del(&t->node); | |
83 | thread__delete(t); | |
84 | } | |
85 | } | |
86 | ||
87 | void machine__delete_threads(struct machine *machine) | |
88 | { | |
89 | struct rb_node *nd = rb_first(&machine->threads); | |
90 | ||
91 | while (nd) { | |
92 | struct thread *t = rb_entry(nd, struct thread, rb_node); | |
93 | ||
94 | rb_erase(&t->rb_node, &machine->threads); | |
95 | nd = rb_next(nd); | |
96 | thread__delete(t); | |
97 | } | |
98 | } | |
99 | ||
69d2591a ACM |
100 | void machine__exit(struct machine *machine) |
101 | { | |
102 | map_groups__exit(&machine->kmaps); | |
103 | dsos__delete(&machine->user_dsos); | |
104 | dsos__delete(&machine->kernel_dsos); | |
105 | free(machine->root_dir); | |
106 | machine->root_dir = NULL; | |
107 | } | |
108 | ||
109 | void machine__delete(struct machine *machine) | |
110 | { | |
111 | machine__exit(machine); | |
112 | free(machine); | |
113 | } | |
114 | ||
876650e6 ACM |
115 | void 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 | ||
122 | void machines__exit(struct machines *machines) | |
123 | { | |
124 | machine__exit(&machines->host); | |
125 | /* XXX exit guest */ | |
126 | } | |
127 | ||
128 | struct 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 |
160 | void 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 | 175 | struct 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 | 201 | struct 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); | |
231 | out: | |
232 | return machine; | |
233 | } | |
234 | ||
876650e6 ACM |
235 | void 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 | ||
246 | char *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 | 260 | void 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 |
275 | static 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 |
324 | struct 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 | 330 | struct 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 |
335 | int 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 | ||
353 | int 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 |
361 | struct 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 | 382 | size_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 | ||
397 | size_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 | 404 | size_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 | ||
417 | size_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 | ||
436 | size_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 | ||
450 | static 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 | ||
483 | struct process_args { | |
484 | u64 start; | |
485 | }; | |
486 | ||
487 | static 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 | ||
499 | /* Figure out the start address of kernel map from /proc/kallsyms */ | |
500 | static u64 machine__get_kernel_start_addr(struct machine *machine) | |
501 | { | |
502 | const char *filename; | |
503 | char path[PATH_MAX]; | |
504 | struct process_args args; | |
505 | ||
2f375735 DY |
506 | if (machine__is_default_guest(machine)) |
507 | filename = (char *)symbol_conf.default_guest_kallsyms; | |
508 | else { | |
509 | sprintf(path, "%s/proc/kallsyms", machine->root_dir); | |
510 | filename = path; | |
3f067dca ACM |
511 | } |
512 | ||
513 | if (symbol__restricted_filename(filename, "/proc/kallsyms")) | |
514 | return 0; | |
515 | ||
516 | if (kallsyms__parse(filename, &args, symbol__in_kernel) <= 0) | |
517 | return 0; | |
518 | ||
519 | return args.start; | |
520 | } | |
521 | ||
522 | int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel) | |
523 | { | |
524 | enum map_type type; | |
525 | u64 start = machine__get_kernel_start_addr(machine); | |
526 | ||
527 | for (type = 0; type < MAP__NR_TYPES; ++type) { | |
528 | struct kmap *kmap; | |
529 | ||
530 | machine->vmlinux_maps[type] = map__new2(start, kernel, type); | |
531 | if (machine->vmlinux_maps[type] == NULL) | |
532 | return -1; | |
533 | ||
534 | machine->vmlinux_maps[type]->map_ip = | |
535 | machine->vmlinux_maps[type]->unmap_ip = | |
536 | identity__map_ip; | |
537 | kmap = map__kmap(machine->vmlinux_maps[type]); | |
538 | kmap->kmaps = &machine->kmaps; | |
539 | map_groups__insert(&machine->kmaps, | |
540 | machine->vmlinux_maps[type]); | |
541 | } | |
542 | ||
543 | return 0; | |
544 | } | |
545 | ||
546 | void machine__destroy_kernel_maps(struct machine *machine) | |
547 | { | |
548 | enum map_type type; | |
549 | ||
550 | for (type = 0; type < MAP__NR_TYPES; ++type) { | |
551 | struct kmap *kmap; | |
552 | ||
553 | if (machine->vmlinux_maps[type] == NULL) | |
554 | continue; | |
555 | ||
556 | kmap = map__kmap(machine->vmlinux_maps[type]); | |
557 | map_groups__remove(&machine->kmaps, | |
558 | machine->vmlinux_maps[type]); | |
559 | if (kmap->ref_reloc_sym) { | |
560 | /* | |
561 | * ref_reloc_sym is shared among all maps, so free just | |
562 | * on one of them. | |
563 | */ | |
564 | if (type == MAP__FUNCTION) { | |
565 | free((char *)kmap->ref_reloc_sym->name); | |
566 | kmap->ref_reloc_sym->name = NULL; | |
567 | free(kmap->ref_reloc_sym); | |
568 | } | |
569 | kmap->ref_reloc_sym = NULL; | |
570 | } | |
571 | ||
572 | map__delete(machine->vmlinux_maps[type]); | |
573 | machine->vmlinux_maps[type] = NULL; | |
574 | } | |
575 | } | |
576 | ||
876650e6 | 577 | int machines__create_guest_kernel_maps(struct machines *machines) |
3f067dca ACM |
578 | { |
579 | int ret = 0; | |
580 | struct dirent **namelist = NULL; | |
581 | int i, items = 0; | |
582 | char path[PATH_MAX]; | |
583 | pid_t pid; | |
584 | char *endp; | |
585 | ||
586 | if (symbol_conf.default_guest_vmlinux_name || | |
587 | symbol_conf.default_guest_modules || | |
588 | symbol_conf.default_guest_kallsyms) { | |
589 | machines__create_kernel_maps(machines, DEFAULT_GUEST_KERNEL_ID); | |
590 | } | |
591 | ||
592 | if (symbol_conf.guestmount) { | |
593 | items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL); | |
594 | if (items <= 0) | |
595 | return -ENOENT; | |
596 | for (i = 0; i < items; i++) { | |
597 | if (!isdigit(namelist[i]->d_name[0])) { | |
598 | /* Filter out . and .. */ | |
599 | continue; | |
600 | } | |
601 | pid = (pid_t)strtol(namelist[i]->d_name, &endp, 10); | |
602 | if ((*endp != '\0') || | |
603 | (endp == namelist[i]->d_name) || | |
604 | (errno == ERANGE)) { | |
605 | pr_debug("invalid directory (%s). Skipping.\n", | |
606 | namelist[i]->d_name); | |
607 | continue; | |
608 | } | |
609 | sprintf(path, "%s/%s/proc/kallsyms", | |
610 | symbol_conf.guestmount, | |
611 | namelist[i]->d_name); | |
612 | ret = access(path, R_OK); | |
613 | if (ret) { | |
614 | pr_debug("Can't access file %s\n", path); | |
615 | goto failure; | |
616 | } | |
617 | machines__create_kernel_maps(machines, pid); | |
618 | } | |
619 | failure: | |
620 | free(namelist); | |
621 | } | |
622 | ||
623 | return ret; | |
624 | } | |
625 | ||
876650e6 | 626 | void machines__destroy_kernel_maps(struct machines *machines) |
3f067dca | 627 | { |
876650e6 ACM |
628 | struct rb_node *next = rb_first(&machines->guests); |
629 | ||
630 | machine__destroy_kernel_maps(&machines->host); | |
3f067dca ACM |
631 | |
632 | while (next) { | |
633 | struct machine *pos = rb_entry(next, struct machine, rb_node); | |
634 | ||
635 | next = rb_next(&pos->rb_node); | |
876650e6 | 636 | rb_erase(&pos->rb_node, &machines->guests); |
3f067dca ACM |
637 | machine__delete(pos); |
638 | } | |
639 | } | |
640 | ||
876650e6 | 641 | int machines__create_kernel_maps(struct machines *machines, pid_t pid) |
3f067dca ACM |
642 | { |
643 | struct machine *machine = machines__findnew(machines, pid); | |
644 | ||
645 | if (machine == NULL) | |
646 | return -1; | |
647 | ||
648 | return machine__create_kernel_maps(machine); | |
649 | } | |
650 | ||
651 | int machine__load_kallsyms(struct machine *machine, const char *filename, | |
652 | enum map_type type, symbol_filter_t filter) | |
653 | { | |
654 | struct map *map = machine->vmlinux_maps[type]; | |
655 | int ret = dso__load_kallsyms(map->dso, filename, map, filter); | |
656 | ||
657 | if (ret > 0) { | |
658 | dso__set_loaded(map->dso, type); | |
659 | /* | |
660 | * Since /proc/kallsyms will have multiple sessions for the | |
661 | * kernel, with modules between them, fixup the end of all | |
662 | * sections. | |
663 | */ | |
664 | __map_groups__fixup_end(&machine->kmaps, type); | |
665 | } | |
666 | ||
667 | return ret; | |
668 | } | |
669 | ||
670 | int machine__load_vmlinux_path(struct machine *machine, enum map_type type, | |
671 | symbol_filter_t filter) | |
672 | { | |
673 | struct map *map = machine->vmlinux_maps[type]; | |
674 | int ret = dso__load_vmlinux_path(map->dso, map, filter); | |
675 | ||
39b12f78 | 676 | if (ret > 0) |
3f067dca | 677 | dso__set_loaded(map->dso, type); |
3f067dca ACM |
678 | |
679 | return ret; | |
680 | } | |
681 | ||
682 | static void map_groups__fixup_end(struct map_groups *mg) | |
683 | { | |
684 | int i; | |
685 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
686 | __map_groups__fixup_end(mg, i); | |
687 | } | |
688 | ||
689 | static char *get_kernel_version(const char *root_dir) | |
690 | { | |
691 | char version[PATH_MAX]; | |
692 | FILE *file; | |
693 | char *name, *tmp; | |
694 | const char *prefix = "Linux version "; | |
695 | ||
696 | sprintf(version, "%s/proc/version", root_dir); | |
697 | file = fopen(version, "r"); | |
698 | if (!file) | |
699 | return NULL; | |
700 | ||
701 | version[0] = '\0'; | |
702 | tmp = fgets(version, sizeof(version), file); | |
703 | fclose(file); | |
704 | ||
705 | name = strstr(version, prefix); | |
706 | if (!name) | |
707 | return NULL; | |
708 | name += strlen(prefix); | |
709 | tmp = strchr(name, ' '); | |
710 | if (tmp) | |
711 | *tmp = '\0'; | |
712 | ||
713 | return strdup(name); | |
714 | } | |
715 | ||
716 | static int map_groups__set_modules_path_dir(struct map_groups *mg, | |
717 | const char *dir_name) | |
718 | { | |
719 | struct dirent *dent; | |
720 | DIR *dir = opendir(dir_name); | |
721 | int ret = 0; | |
722 | ||
723 | if (!dir) { | |
724 | pr_debug("%s: cannot open %s dir\n", __func__, dir_name); | |
725 | return -1; | |
726 | } | |
727 | ||
728 | while ((dent = readdir(dir)) != NULL) { | |
729 | char path[PATH_MAX]; | |
730 | struct stat st; | |
731 | ||
732 | /*sshfs might return bad dent->d_type, so we have to stat*/ | |
733 | snprintf(path, sizeof(path), "%s/%s", dir_name, dent->d_name); | |
734 | if (stat(path, &st)) | |
735 | continue; | |
736 | ||
737 | if (S_ISDIR(st.st_mode)) { | |
738 | if (!strcmp(dent->d_name, ".") || | |
739 | !strcmp(dent->d_name, "..")) | |
740 | continue; | |
741 | ||
742 | ret = map_groups__set_modules_path_dir(mg, path); | |
743 | if (ret < 0) | |
744 | goto out; | |
745 | } else { | |
746 | char *dot = strrchr(dent->d_name, '.'), | |
747 | dso_name[PATH_MAX]; | |
748 | struct map *map; | |
749 | char *long_name; | |
750 | ||
751 | if (dot == NULL || strcmp(dot, ".ko")) | |
752 | continue; | |
753 | snprintf(dso_name, sizeof(dso_name), "[%.*s]", | |
754 | (int)(dot - dent->d_name), dent->d_name); | |
755 | ||
756 | strxfrchar(dso_name, '-', '_'); | |
757 | map = map_groups__find_by_name(mg, MAP__FUNCTION, | |
758 | dso_name); | |
759 | if (map == NULL) | |
760 | continue; | |
761 | ||
762 | long_name = strdup(path); | |
763 | if (long_name == NULL) { | |
764 | ret = -1; | |
765 | goto out; | |
766 | } | |
7e155d4d | 767 | dso__set_long_name(map->dso, long_name, true); |
3f067dca ACM |
768 | dso__kernel_module_get_build_id(map->dso, ""); |
769 | } | |
770 | } | |
771 | ||
772 | out: | |
773 | closedir(dir); | |
774 | return ret; | |
775 | } | |
776 | ||
777 | static int machine__set_modules_path(struct machine *machine) | |
778 | { | |
779 | char *version; | |
780 | char modules_path[PATH_MAX]; | |
781 | ||
782 | version = get_kernel_version(machine->root_dir); | |
783 | if (!version) | |
784 | return -1; | |
785 | ||
786 | snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s/kernel", | |
787 | machine->root_dir, version); | |
788 | free(version); | |
789 | ||
790 | return map_groups__set_modules_path_dir(&machine->kmaps, modules_path); | |
791 | } | |
792 | ||
316d70d6 | 793 | static int machine__create_module(void *arg, const char *name, u64 start) |
3f067dca | 794 | { |
316d70d6 | 795 | struct machine *machine = arg; |
3f067dca | 796 | struct map *map; |
316d70d6 AH |
797 | |
798 | map = machine__new_module(machine, start, name); | |
799 | if (map == NULL) | |
800 | return -1; | |
801 | ||
802 | dso__kernel_module_get_build_id(map->dso, machine->root_dir); | |
803 | ||
804 | return 0; | |
805 | } | |
806 | ||
807 | static int machine__create_modules(struct machine *machine) | |
808 | { | |
3f067dca ACM |
809 | const char *modules; |
810 | char path[PATH_MAX]; | |
811 | ||
f4be904d | 812 | if (machine__is_default_guest(machine)) { |
3f067dca | 813 | modules = symbol_conf.default_guest_modules; |
f4be904d AH |
814 | } else { |
815 | snprintf(path, PATH_MAX, "%s/proc/modules", machine->root_dir); | |
3f067dca ACM |
816 | modules = path; |
817 | } | |
818 | ||
aa7fe3b0 | 819 | if (symbol__restricted_filename(modules, "/proc/modules")) |
3f067dca ACM |
820 | return -1; |
821 | ||
316d70d6 | 822 | if (modules__parse(modules, machine, machine__create_module)) |
3f067dca ACM |
823 | return -1; |
824 | ||
316d70d6 AH |
825 | if (!machine__set_modules_path(machine)) |
826 | return 0; | |
3f067dca | 827 | |
316d70d6 | 828 | pr_debug("Problems setting modules path maps, continuing anyway...\n"); |
3f067dca | 829 | |
8f76fcd9 | 830 | return 0; |
3f067dca ACM |
831 | } |
832 | ||
833 | int machine__create_kernel_maps(struct machine *machine) | |
834 | { | |
835 | struct dso *kernel = machine__get_kernel(machine); | |
836 | ||
837 | if (kernel == NULL || | |
838 | __machine__create_kernel_maps(machine, kernel) < 0) | |
839 | return -1; | |
840 | ||
841 | if (symbol_conf.use_modules && machine__create_modules(machine) < 0) { | |
842 | if (machine__is_host(machine)) | |
843 | pr_debug("Problems creating module maps, " | |
844 | "continuing anyway...\n"); | |
845 | else | |
846 | pr_debug("Problems creating module maps for guest %d, " | |
847 | "continuing anyway...\n", machine->pid); | |
848 | } | |
849 | ||
850 | /* | |
851 | * Now that we have all the maps created, just set the ->end of them: | |
852 | */ | |
853 | map_groups__fixup_end(&machine->kmaps); | |
854 | return 0; | |
855 | } | |
856 | ||
b0a7d1a0 ACM |
857 | static void machine__set_kernel_mmap_len(struct machine *machine, |
858 | union perf_event *event) | |
859 | { | |
4552cf0f NK |
860 | int i; |
861 | ||
862 | for (i = 0; i < MAP__NR_TYPES; i++) { | |
863 | machine->vmlinux_maps[i]->start = event->mmap.start; | |
864 | machine->vmlinux_maps[i]->end = (event->mmap.start + | |
865 | event->mmap.len); | |
866 | /* | |
867 | * Be a bit paranoid here, some perf.data file came with | |
868 | * a zero sized synthesized MMAP event for the kernel. | |
869 | */ | |
870 | if (machine->vmlinux_maps[i]->end == 0) | |
871 | machine->vmlinux_maps[i]->end = ~0ULL; | |
872 | } | |
b0a7d1a0 ACM |
873 | } |
874 | ||
8e0cf965 AH |
875 | static bool machine__uses_kcore(struct machine *machine) |
876 | { | |
877 | struct dso *dso; | |
878 | ||
879 | list_for_each_entry(dso, &machine->kernel_dsos, node) { | |
880 | if (dso__is_kcore(dso)) | |
881 | return true; | |
882 | } | |
883 | ||
884 | return false; | |
885 | } | |
886 | ||
b0a7d1a0 ACM |
887 | static int machine__process_kernel_mmap_event(struct machine *machine, |
888 | union perf_event *event) | |
889 | { | |
890 | struct map *map; | |
891 | char kmmap_prefix[PATH_MAX]; | |
892 | enum dso_kernel_type kernel_type; | |
893 | bool is_kernel_mmap; | |
894 | ||
8e0cf965 AH |
895 | /* If we have maps from kcore then we do not need or want any others */ |
896 | if (machine__uses_kcore(machine)) | |
897 | return 0; | |
898 | ||
b0a7d1a0 ACM |
899 | machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix)); |
900 | if (machine__is_host(machine)) | |
901 | kernel_type = DSO_TYPE_KERNEL; | |
902 | else | |
903 | kernel_type = DSO_TYPE_GUEST_KERNEL; | |
904 | ||
905 | is_kernel_mmap = memcmp(event->mmap.filename, | |
906 | kmmap_prefix, | |
907 | strlen(kmmap_prefix) - 1) == 0; | |
908 | if (event->mmap.filename[0] == '/' || | |
909 | (!is_kernel_mmap && event->mmap.filename[0] == '[')) { | |
910 | ||
911 | char short_module_name[1024]; | |
912 | char *name, *dot; | |
913 | ||
914 | if (event->mmap.filename[0] == '/') { | |
915 | name = strrchr(event->mmap.filename, '/'); | |
916 | if (name == NULL) | |
917 | goto out_problem; | |
918 | ||
919 | ++name; /* skip / */ | |
920 | dot = strrchr(name, '.'); | |
921 | if (dot == NULL) | |
922 | goto out_problem; | |
923 | snprintf(short_module_name, sizeof(short_module_name), | |
924 | "[%.*s]", (int)(dot - name), name); | |
925 | strxfrchar(short_module_name, '-', '_'); | |
926 | } else | |
927 | strcpy(short_module_name, event->mmap.filename); | |
928 | ||
929 | map = machine__new_module(machine, event->mmap.start, | |
930 | event->mmap.filename); | |
931 | if (map == NULL) | |
932 | goto out_problem; | |
933 | ||
934 | name = strdup(short_module_name); | |
935 | if (name == NULL) | |
936 | goto out_problem; | |
937 | ||
58a98c9c | 938 | dso__set_short_name(map->dso, name, true); |
b0a7d1a0 ACM |
939 | map->end = map->start + event->mmap.len; |
940 | } else if (is_kernel_mmap) { | |
941 | const char *symbol_name = (event->mmap.filename + | |
942 | strlen(kmmap_prefix)); | |
943 | /* | |
944 | * Should be there already, from the build-id table in | |
945 | * the header. | |
946 | */ | |
947 | struct dso *kernel = __dsos__findnew(&machine->kernel_dsos, | |
948 | kmmap_prefix); | |
949 | if (kernel == NULL) | |
950 | goto out_problem; | |
951 | ||
952 | kernel->kernel = kernel_type; | |
953 | if (__machine__create_kernel_maps(machine, kernel) < 0) | |
954 | goto out_problem; | |
955 | ||
956 | machine__set_kernel_mmap_len(machine, event); | |
957 | ||
958 | /* | |
959 | * Avoid using a zero address (kptr_restrict) for the ref reloc | |
960 | * symbol. Effectively having zero here means that at record | |
961 | * time /proc/sys/kernel/kptr_restrict was non zero. | |
962 | */ | |
963 | if (event->mmap.pgoff != 0) { | |
964 | maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, | |
965 | symbol_name, | |
966 | event->mmap.pgoff); | |
967 | } | |
968 | ||
969 | if (machine__is_default_guest(machine)) { | |
970 | /* | |
971 | * preload dso of guest kernel and modules | |
972 | */ | |
973 | dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION], | |
974 | NULL); | |
975 | } | |
976 | } | |
977 | return 0; | |
978 | out_problem: | |
979 | return -1; | |
980 | } | |
981 | ||
5c5e854b | 982 | int machine__process_mmap2_event(struct machine *machine, |
162f0bef FW |
983 | union perf_event *event, |
984 | struct perf_sample *sample __maybe_unused) | |
5c5e854b SE |
985 | { |
986 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
987 | struct thread *thread; | |
988 | struct map *map; | |
989 | enum map_type type; | |
990 | int ret = 0; | |
991 | ||
992 | if (dump_trace) | |
993 | perf_event__fprintf_mmap2(event, stdout); | |
994 | ||
995 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || | |
996 | cpumode == PERF_RECORD_MISC_KERNEL) { | |
997 | ret = machine__process_kernel_mmap_event(machine, event); | |
998 | if (ret < 0) | |
999 | goto out_problem; | |
1000 | return 0; | |
1001 | } | |
1002 | ||
1003 | thread = machine__findnew_thread(machine, event->mmap2.pid, | |
1004 | event->mmap2.pid); | |
1005 | if (thread == NULL) | |
1006 | goto out_problem; | |
1007 | ||
1008 | if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) | |
1009 | type = MAP__VARIABLE; | |
1010 | else | |
1011 | type = MAP__FUNCTION; | |
1012 | ||
1013 | map = map__new(&machine->user_dsos, event->mmap2.start, | |
1014 | event->mmap2.len, event->mmap2.pgoff, | |
1015 | event->mmap2.pid, event->mmap2.maj, | |
1016 | event->mmap2.min, event->mmap2.ino, | |
1017 | event->mmap2.ino_generation, | |
1018 | event->mmap2.filename, type); | |
1019 | ||
1020 | if (map == NULL) | |
1021 | goto out_problem; | |
1022 | ||
1023 | thread__insert_map(thread, map); | |
1024 | return 0; | |
1025 | ||
1026 | out_problem: | |
1027 | dump_printf("problem processing PERF_RECORD_MMAP2, skipping event.\n"); | |
1028 | return 0; | |
1029 | } | |
1030 | ||
162f0bef FW |
1031 | int machine__process_mmap_event(struct machine *machine, union perf_event *event, |
1032 | struct perf_sample *sample __maybe_unused) | |
b0a7d1a0 ACM |
1033 | { |
1034 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
1035 | struct thread *thread; | |
1036 | struct map *map; | |
bad40917 | 1037 | enum map_type type; |
b0a7d1a0 ACM |
1038 | int ret = 0; |
1039 | ||
1040 | if (dump_trace) | |
1041 | perf_event__fprintf_mmap(event, stdout); | |
1042 | ||
1043 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || | |
1044 | cpumode == PERF_RECORD_MISC_KERNEL) { | |
1045 | ret = machine__process_kernel_mmap_event(machine, event); | |
1046 | if (ret < 0) | |
1047 | goto out_problem; | |
1048 | return 0; | |
1049 | } | |
1050 | ||
314add6b AH |
1051 | thread = machine__findnew_thread(machine, event->mmap.pid, |
1052 | event->mmap.pid); | |
b0a7d1a0 ACM |
1053 | if (thread == NULL) |
1054 | goto out_problem; | |
bad40917 SE |
1055 | |
1056 | if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) | |
1057 | type = MAP__VARIABLE; | |
1058 | else | |
1059 | type = MAP__FUNCTION; | |
1060 | ||
b0a7d1a0 ACM |
1061 | map = map__new(&machine->user_dsos, event->mmap.start, |
1062 | event->mmap.len, event->mmap.pgoff, | |
5c5e854b SE |
1063 | event->mmap.pid, 0, 0, 0, 0, |
1064 | event->mmap.filename, | |
bad40917 SE |
1065 | type); |
1066 | ||
b0a7d1a0 ACM |
1067 | if (map == NULL) |
1068 | goto out_problem; | |
1069 | ||
1070 | thread__insert_map(thread, map); | |
1071 | return 0; | |
1072 | ||
1073 | out_problem: | |
1074 | dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); | |
1075 | return 0; | |
1076 | } | |
1077 | ||
236a3bbd DA |
1078 | static void machine__remove_thread(struct machine *machine, struct thread *th) |
1079 | { | |
1080 | machine->last_match = NULL; | |
1081 | rb_erase(&th->rb_node, &machine->threads); | |
1082 | /* | |
1083 | * We may have references to this thread, for instance in some hist_entry | |
1084 | * instances, so just move them to a separate list. | |
1085 | */ | |
1086 | list_add_tail(&th->node, &machine->dead_threads); | |
1087 | } | |
1088 | ||
162f0bef FW |
1089 | int machine__process_fork_event(struct machine *machine, union perf_event *event, |
1090 | struct perf_sample *sample) | |
b0a7d1a0 | 1091 | { |
236a3bbd | 1092 | struct thread *thread = machine__find_thread(machine, event->fork.tid); |
314add6b AH |
1093 | struct thread *parent = machine__findnew_thread(machine, |
1094 | event->fork.ppid, | |
1095 | event->fork.ptid); | |
b0a7d1a0 | 1096 | |
236a3bbd DA |
1097 | /* if a thread currently exists for the thread id remove it */ |
1098 | if (thread != NULL) | |
1099 | machine__remove_thread(machine, thread); | |
1100 | ||
314add6b AH |
1101 | thread = machine__findnew_thread(machine, event->fork.pid, |
1102 | event->fork.tid); | |
b0a7d1a0 ACM |
1103 | if (dump_trace) |
1104 | perf_event__fprintf_task(event, stdout); | |
1105 | ||
1106 | if (thread == NULL || parent == NULL || | |
162f0bef | 1107 | thread__fork(thread, parent, sample->time) < 0) { |
b0a7d1a0 ACM |
1108 | dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); |
1109 | return -1; | |
1110 | } | |
1111 | ||
1112 | return 0; | |
1113 | } | |
1114 | ||
162f0bef FW |
1115 | int machine__process_exit_event(struct machine *machine, union perf_event *event, |
1116 | struct perf_sample *sample __maybe_unused) | |
b0a7d1a0 ACM |
1117 | { |
1118 | struct thread *thread = machine__find_thread(machine, event->fork.tid); | |
1119 | ||
1120 | if (dump_trace) | |
1121 | perf_event__fprintf_task(event, stdout); | |
1122 | ||
1123 | if (thread != NULL) | |
236a3bbd | 1124 | thread__exited(thread); |
b0a7d1a0 ACM |
1125 | |
1126 | return 0; | |
1127 | } | |
1128 | ||
162f0bef FW |
1129 | int machine__process_event(struct machine *machine, union perf_event *event, |
1130 | struct perf_sample *sample) | |
b0a7d1a0 ACM |
1131 | { |
1132 | int ret; | |
1133 | ||
1134 | switch (event->header.type) { | |
1135 | case PERF_RECORD_COMM: | |
162f0bef | 1136 | ret = machine__process_comm_event(machine, event, sample); break; |
b0a7d1a0 | 1137 | case PERF_RECORD_MMAP: |
162f0bef | 1138 | ret = machine__process_mmap_event(machine, event, sample); break; |
5c5e854b | 1139 | case PERF_RECORD_MMAP2: |
162f0bef | 1140 | ret = machine__process_mmap2_event(machine, event, sample); break; |
b0a7d1a0 | 1141 | case PERF_RECORD_FORK: |
162f0bef | 1142 | ret = machine__process_fork_event(machine, event, sample); break; |
b0a7d1a0 | 1143 | case PERF_RECORD_EXIT: |
162f0bef | 1144 | ret = machine__process_exit_event(machine, event, sample); break; |
b0a7d1a0 | 1145 | case PERF_RECORD_LOST: |
162f0bef | 1146 | ret = machine__process_lost_event(machine, event, sample); break; |
b0a7d1a0 ACM |
1147 | default: |
1148 | ret = -1; | |
1149 | break; | |
1150 | } | |
1151 | ||
1152 | return ret; | |
1153 | } | |
3f067dca | 1154 | |
b21484f1 | 1155 | static bool symbol__match_regex(struct symbol *sym, regex_t *regex) |
3f067dca | 1156 | { |
b21484f1 | 1157 | if (sym->name && !regexec(regex, sym->name, 0, NULL, 0)) |
3f067dca | 1158 | return 1; |
3f067dca ACM |
1159 | return 0; |
1160 | } | |
1161 | ||
1162 | static const u8 cpumodes[] = { | |
1163 | PERF_RECORD_MISC_USER, | |
1164 | PERF_RECORD_MISC_KERNEL, | |
1165 | PERF_RECORD_MISC_GUEST_USER, | |
1166 | PERF_RECORD_MISC_GUEST_KERNEL | |
1167 | }; | |
1168 | #define NCPUMODES (sizeof(cpumodes)/sizeof(u8)) | |
1169 | ||
1170 | static void ip__resolve_ams(struct machine *machine, struct thread *thread, | |
1171 | struct addr_map_symbol *ams, | |
1172 | u64 ip) | |
1173 | { | |
1174 | struct addr_location al; | |
1175 | size_t i; | |
1176 | u8 m; | |
1177 | ||
1178 | memset(&al, 0, sizeof(al)); | |
1179 | ||
1180 | for (i = 0; i < NCPUMODES; i++) { | |
1181 | m = cpumodes[i]; | |
1182 | /* | |
1183 | * We cannot use the header.misc hint to determine whether a | |
1184 | * branch stack address is user, kernel, guest, hypervisor. | |
1185 | * Branches may straddle the kernel/user/hypervisor boundaries. | |
1186 | * Thus, we have to try consecutively until we find a match | |
1187 | * or else, the symbol is unknown | |
1188 | */ | |
1189 | thread__find_addr_location(thread, machine, m, MAP__FUNCTION, | |
61710bde | 1190 | ip, &al); |
3f067dca ACM |
1191 | if (al.sym) |
1192 | goto found; | |
1193 | } | |
1194 | found: | |
1195 | ams->addr = ip; | |
1196 | ams->al_addr = al.addr; | |
1197 | ams->sym = al.sym; | |
1198 | ams->map = al.map; | |
1199 | } | |
1200 | ||
98a3b32c SE |
1201 | static void ip__resolve_data(struct machine *machine, struct thread *thread, |
1202 | u8 m, struct addr_map_symbol *ams, u64 addr) | |
1203 | { | |
1204 | struct addr_location al; | |
1205 | ||
1206 | memset(&al, 0, sizeof(al)); | |
1207 | ||
61710bde AH |
1208 | thread__find_addr_location(thread, machine, m, MAP__VARIABLE, addr, |
1209 | &al); | |
98a3b32c SE |
1210 | ams->addr = addr; |
1211 | ams->al_addr = al.addr; | |
1212 | ams->sym = al.sym; | |
1213 | ams->map = al.map; | |
1214 | } | |
1215 | ||
1216 | struct mem_info *machine__resolve_mem(struct machine *machine, | |
1217 | struct thread *thr, | |
1218 | struct perf_sample *sample, | |
1219 | u8 cpumode) | |
1220 | { | |
1221 | struct mem_info *mi = zalloc(sizeof(*mi)); | |
1222 | ||
1223 | if (!mi) | |
1224 | return NULL; | |
1225 | ||
1226 | ip__resolve_ams(machine, thr, &mi->iaddr, sample->ip); | |
1227 | ip__resolve_data(machine, thr, cpumode, &mi->daddr, sample->addr); | |
1228 | mi->data_src.val = sample->data_src; | |
1229 | ||
1230 | return mi; | |
1231 | } | |
1232 | ||
3f067dca ACM |
1233 | struct branch_info *machine__resolve_bstack(struct machine *machine, |
1234 | struct thread *thr, | |
1235 | struct branch_stack *bs) | |
1236 | { | |
1237 | struct branch_info *bi; | |
1238 | unsigned int i; | |
1239 | ||
1240 | bi = calloc(bs->nr, sizeof(struct branch_info)); | |
1241 | if (!bi) | |
1242 | return NULL; | |
1243 | ||
1244 | for (i = 0; i < bs->nr; i++) { | |
1245 | ip__resolve_ams(machine, thr, &bi[i].to, bs->entries[i].to); | |
1246 | ip__resolve_ams(machine, thr, &bi[i].from, bs->entries[i].from); | |
1247 | bi[i].flags = bs->entries[i].flags; | |
1248 | } | |
1249 | return bi; | |
1250 | } | |
1251 | ||
1252 | static int machine__resolve_callchain_sample(struct machine *machine, | |
1253 | struct thread *thread, | |
1254 | struct ip_callchain *chain, | |
b21484f1 | 1255 | struct symbol **parent, |
91e95617 WL |
1256 | struct addr_location *root_al, |
1257 | int max_stack) | |
3f067dca ACM |
1258 | { |
1259 | u8 cpumode = PERF_RECORD_MISC_USER; | |
91e95617 WL |
1260 | int chain_nr = min(max_stack, (int)chain->nr); |
1261 | int i; | |
3f067dca ACM |
1262 | int err; |
1263 | ||
1264 | callchain_cursor_reset(&callchain_cursor); | |
1265 | ||
1266 | if (chain->nr > PERF_MAX_STACK_DEPTH) { | |
1267 | pr_warning("corrupted callchain. skipping...\n"); | |
1268 | return 0; | |
1269 | } | |
1270 | ||
91e95617 | 1271 | for (i = 0; i < chain_nr; i++) { |
3f067dca ACM |
1272 | u64 ip; |
1273 | struct addr_location al; | |
1274 | ||
1275 | if (callchain_param.order == ORDER_CALLEE) | |
1276 | ip = chain->ips[i]; | |
1277 | else | |
1278 | ip = chain->ips[chain->nr - i - 1]; | |
1279 | ||
1280 | if (ip >= PERF_CONTEXT_MAX) { | |
1281 | switch (ip) { | |
1282 | case PERF_CONTEXT_HV: | |
1283 | cpumode = PERF_RECORD_MISC_HYPERVISOR; | |
1284 | break; | |
1285 | case PERF_CONTEXT_KERNEL: | |
1286 | cpumode = PERF_RECORD_MISC_KERNEL; | |
1287 | break; | |
1288 | case PERF_CONTEXT_USER: | |
1289 | cpumode = PERF_RECORD_MISC_USER; | |
1290 | break; | |
1291 | default: | |
1292 | pr_debug("invalid callchain context: " | |
1293 | "%"PRId64"\n", (s64) ip); | |
1294 | /* | |
1295 | * It seems the callchain is corrupted. | |
1296 | * Discard all. | |
1297 | */ | |
1298 | callchain_cursor_reset(&callchain_cursor); | |
1299 | return 0; | |
1300 | } | |
1301 | continue; | |
1302 | } | |
1303 | ||
1304 | al.filtered = false; | |
1305 | thread__find_addr_location(thread, machine, cpumode, | |
61710bde | 1306 | MAP__FUNCTION, ip, &al); |
3f067dca ACM |
1307 | if (al.sym != NULL) { |
1308 | if (sort__has_parent && !*parent && | |
b21484f1 | 1309 | symbol__match_regex(al.sym, &parent_regex)) |
3f067dca | 1310 | *parent = al.sym; |
b21484f1 GP |
1311 | else if (have_ignore_callees && root_al && |
1312 | symbol__match_regex(al.sym, &ignore_callees_regex)) { | |
1313 | /* Treat this symbol as the root, | |
1314 | forgetting its callees. */ | |
1315 | *root_al = al; | |
1316 | callchain_cursor_reset(&callchain_cursor); | |
1317 | } | |
3f067dca ACM |
1318 | if (!symbol_conf.use_callchain) |
1319 | break; | |
1320 | } | |
1321 | ||
1322 | err = callchain_cursor_append(&callchain_cursor, | |
1323 | ip, al.map, al.sym); | |
1324 | if (err) | |
1325 | return err; | |
1326 | } | |
1327 | ||
1328 | return 0; | |
1329 | } | |
1330 | ||
1331 | static int unwind_entry(struct unwind_entry *entry, void *arg) | |
1332 | { | |
1333 | struct callchain_cursor *cursor = arg; | |
1334 | return callchain_cursor_append(cursor, entry->ip, | |
1335 | entry->map, entry->sym); | |
1336 | } | |
1337 | ||
1338 | int machine__resolve_callchain(struct machine *machine, | |
1339 | struct perf_evsel *evsel, | |
1340 | struct thread *thread, | |
1341 | struct perf_sample *sample, | |
b21484f1 | 1342 | struct symbol **parent, |
91e95617 WL |
1343 | struct addr_location *root_al, |
1344 | int max_stack) | |
3f067dca ACM |
1345 | { |
1346 | int ret; | |
1347 | ||
3f067dca | 1348 | ret = machine__resolve_callchain_sample(machine, thread, |
91e95617 WL |
1349 | sample->callchain, parent, |
1350 | root_al, max_stack); | |
3f067dca ACM |
1351 | if (ret) |
1352 | return ret; | |
1353 | ||
1354 | /* Can we do dwarf post unwind? */ | |
1355 | if (!((evsel->attr.sample_type & PERF_SAMPLE_REGS_USER) && | |
1356 | (evsel->attr.sample_type & PERF_SAMPLE_STACK_USER))) | |
1357 | return 0; | |
1358 | ||
1359 | /* Bail out if nothing was captured. */ | |
1360 | if ((!sample->user_regs.regs) || | |
1361 | (!sample->user_stack.size)) | |
1362 | return 0; | |
1363 | ||
1364 | return unwind__get_entries(unwind_entry, &callchain_cursor, machine, | |
1365 | thread, evsel->attr.sample_regs_user, | |
37676af1 | 1366 | sample, max_stack); |
3f067dca ACM |
1367 | |
1368 | } | |
35feee19 DA |
1369 | |
1370 | int machine__for_each_thread(struct machine *machine, | |
1371 | int (*fn)(struct thread *thread, void *p), | |
1372 | void *priv) | |
1373 | { | |
1374 | struct rb_node *nd; | |
1375 | struct thread *thread; | |
1376 | int rc = 0; | |
1377 | ||
1378 | for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) { | |
1379 | thread = rb_entry(nd, struct thread, rb_node); | |
1380 | rc = fn(thread, priv); | |
1381 | if (rc != 0) | |
1382 | return rc; | |
1383 | } | |
1384 | ||
1385 | list_for_each_entry(thread, &machine->dead_threads, node) { | |
1386 | rc = fn(thread, priv); | |
1387 | if (rc != 0) | |
1388 | return rc; | |
1389 | } | |
1390 | return rc; | |
1391 | } | |
58d925dc | 1392 | |
a33fbd56 | 1393 | int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool, |
602ad878 | 1394 | struct target *target, struct thread_map *threads, |
a33fbd56 | 1395 | perf_event__handler_t process, bool data_mmap) |
58d925dc | 1396 | { |
602ad878 | 1397 | if (target__has_task(target)) |
58d925dc | 1398 | return perf_event__synthesize_thread_map(tool, threads, process, machine, data_mmap); |
602ad878 | 1399 | else if (target__has_cpu(target)) |
58d925dc ACM |
1400 | return perf_event__synthesize_threads(tool, process, machine, data_mmap); |
1401 | /* command specified */ | |
1402 | return 0; | |
1403 | } |