Commit | Line | Data |
---|---|---|
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 | 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 |
51 | struct 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; | |
63 | out_delete: | |
64 | free(machine); | |
65 | return NULL; | |
66 | } | |
67 | ||
69d2591a ACM |
68 | static 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 |
78 | void 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 | ||
88 | void 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 |
101 | void 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 | ||
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 | ||
d75e6097 JO |
330 | struct thread *machine__find_thread(struct machine *machine, pid_t pid, |
331 | pid_t tid) | |
9d2f8e22 | 332 | { |
d75e6097 | 333 | return __machine__findnew_thread(machine, pid, tid, false); |
9d2f8e22 | 334 | } |
b0a7d1a0 | 335 | |
162f0bef FW |
336 | int machine__process_comm_event(struct machine *machine, union perf_event *event, |
337 | struct perf_sample *sample) | |
b0a7d1a0 | 338 | { |
314add6b AH |
339 | struct thread *thread = machine__findnew_thread(machine, |
340 | event->comm.pid, | |
341 | event->comm.tid); | |
b0a7d1a0 ACM |
342 | |
343 | if (dump_trace) | |
344 | perf_event__fprintf_comm(event, stdout); | |
345 | ||
162f0bef | 346 | if (thread == NULL || thread__set_comm(thread, event->comm.comm, sample->time)) { |
b0a7d1a0 ACM |
347 | dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); |
348 | return -1; | |
349 | } | |
350 | ||
351 | return 0; | |
352 | } | |
353 | ||
354 | int machine__process_lost_event(struct machine *machine __maybe_unused, | |
162f0bef | 355 | union perf_event *event, struct perf_sample *sample __maybe_unused) |
b0a7d1a0 ACM |
356 | { |
357 | dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n", | |
358 | event->lost.id, event->lost.lost); | |
359 | return 0; | |
360 | } | |
361 | ||
3f067dca ACM |
362 | struct map *machine__new_module(struct machine *machine, u64 start, |
363 | const char *filename) | |
364 | { | |
365 | struct map *map; | |
366 | struct dso *dso = __dsos__findnew(&machine->kernel_dsos, filename); | |
367 | ||
368 | if (dso == NULL) | |
369 | return NULL; | |
370 | ||
371 | map = map__new2(start, dso, MAP__FUNCTION); | |
372 | if (map == NULL) | |
373 | return NULL; | |
374 | ||
375 | if (machine__is_host(machine)) | |
376 | dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE; | |
377 | else | |
378 | dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE; | |
379 | map_groups__insert(&machine->kmaps, map); | |
380 | return map; | |
381 | } | |
382 | ||
876650e6 | 383 | size_t machines__fprintf_dsos(struct machines *machines, FILE *fp) |
3f067dca ACM |
384 | { |
385 | struct rb_node *nd; | |
876650e6 ACM |
386 | size_t ret = __dsos__fprintf(&machines->host.kernel_dsos, fp) + |
387 | __dsos__fprintf(&machines->host.user_dsos, fp); | |
3f067dca | 388 | |
876650e6 | 389 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { |
3f067dca ACM |
390 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
391 | ret += __dsos__fprintf(&pos->kernel_dsos, fp); | |
392 | ret += __dsos__fprintf(&pos->user_dsos, fp); | |
393 | } | |
394 | ||
395 | return ret; | |
396 | } | |
397 | ||
398 | size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp, | |
399 | bool (skip)(struct dso *dso, int parm), int parm) | |
400 | { | |
401 | return __dsos__fprintf_buildid(&machine->kernel_dsos, fp, skip, parm) + | |
402 | __dsos__fprintf_buildid(&machine->user_dsos, fp, skip, parm); | |
403 | } | |
404 | ||
876650e6 | 405 | size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, |
3f067dca ACM |
406 | bool (skip)(struct dso *dso, int parm), int parm) |
407 | { | |
408 | struct rb_node *nd; | |
876650e6 | 409 | size_t ret = machine__fprintf_dsos_buildid(&machines->host, fp, skip, parm); |
3f067dca | 410 | |
876650e6 | 411 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { |
3f067dca ACM |
412 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
413 | ret += machine__fprintf_dsos_buildid(pos, fp, skip, parm); | |
414 | } | |
415 | return ret; | |
416 | } | |
417 | ||
418 | size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp) | |
419 | { | |
420 | int i; | |
421 | size_t printed = 0; | |
422 | struct dso *kdso = machine->vmlinux_maps[MAP__FUNCTION]->dso; | |
423 | ||
424 | if (kdso->has_build_id) { | |
425 | char filename[PATH_MAX]; | |
426 | if (dso__build_id_filename(kdso, filename, sizeof(filename))) | |
427 | printed += fprintf(fp, "[0] %s\n", filename); | |
428 | } | |
429 | ||
430 | for (i = 0; i < vmlinux_path__nr_entries; ++i) | |
431 | printed += fprintf(fp, "[%d] %s\n", | |
432 | i + kdso->has_build_id, vmlinux_path[i]); | |
433 | ||
434 | return printed; | |
435 | } | |
436 | ||
437 | size_t machine__fprintf(struct machine *machine, FILE *fp) | |
438 | { | |
439 | size_t ret = 0; | |
440 | struct rb_node *nd; | |
441 | ||
442 | for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) { | |
443 | struct thread *pos = rb_entry(nd, struct thread, rb_node); | |
444 | ||
445 | ret += thread__fprintf(pos, fp); | |
446 | } | |
447 | ||
448 | return ret; | |
449 | } | |
450 | ||
451 | static struct dso *machine__get_kernel(struct machine *machine) | |
452 | { | |
453 | const char *vmlinux_name = NULL; | |
454 | struct dso *kernel; | |
455 | ||
456 | if (machine__is_host(machine)) { | |
457 | vmlinux_name = symbol_conf.vmlinux_name; | |
458 | if (!vmlinux_name) | |
459 | vmlinux_name = "[kernel.kallsyms]"; | |
460 | ||
461 | kernel = dso__kernel_findnew(machine, vmlinux_name, | |
462 | "[kernel]", | |
463 | DSO_TYPE_KERNEL); | |
464 | } else { | |
465 | char bf[PATH_MAX]; | |
466 | ||
467 | if (machine__is_default_guest(machine)) | |
468 | vmlinux_name = symbol_conf.default_guest_vmlinux_name; | |
469 | if (!vmlinux_name) | |
470 | vmlinux_name = machine__mmap_name(machine, bf, | |
471 | sizeof(bf)); | |
472 | ||
473 | kernel = dso__kernel_findnew(machine, vmlinux_name, | |
474 | "[guest.kernel]", | |
475 | DSO_TYPE_GUEST_KERNEL); | |
476 | } | |
477 | ||
478 | if (kernel != NULL && (!kernel->has_build_id)) | |
479 | dso__read_running_kernel_build_id(kernel, machine); | |
480 | ||
481 | return kernel; | |
482 | } | |
483 | ||
484 | struct process_args { | |
485 | u64 start; | |
486 | }; | |
487 | ||
488 | static int symbol__in_kernel(void *arg, const char *name, | |
489 | char type __maybe_unused, u64 start) | |
490 | { | |
491 | struct process_args *args = arg; | |
492 | ||
493 | if (strchr(name, '[')) | |
494 | return 0; | |
495 | ||
496 | args->start = start; | |
497 | return 1; | |
498 | } | |
499 | ||
15a0a870 AH |
500 | static void machine__get_kallsyms_filename(struct machine *machine, char *buf, |
501 | size_t bufsz) | |
502 | { | |
503 | if (machine__is_default_guest(machine)) | |
504 | scnprintf(buf, bufsz, "%s", symbol_conf.default_guest_kallsyms); | |
505 | else | |
506 | scnprintf(buf, bufsz, "%s/proc/kallsyms", machine->root_dir); | |
507 | } | |
508 | ||
3f067dca ACM |
509 | /* Figure out the start address of kernel map from /proc/kallsyms */ |
510 | static u64 machine__get_kernel_start_addr(struct machine *machine) | |
511 | { | |
15a0a870 | 512 | char filename[PATH_MAX]; |
3f067dca ACM |
513 | struct process_args args; |
514 | ||
15a0a870 | 515 | machine__get_kallsyms_filename(machine, filename, PATH_MAX); |
3f067dca ACM |
516 | |
517 | if (symbol__restricted_filename(filename, "/proc/kallsyms")) | |
518 | return 0; | |
519 | ||
520 | if (kallsyms__parse(filename, &args, symbol__in_kernel) <= 0) | |
521 | return 0; | |
522 | ||
523 | return args.start; | |
524 | } | |
525 | ||
526 | int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel) | |
527 | { | |
528 | enum map_type type; | |
529 | u64 start = machine__get_kernel_start_addr(machine); | |
530 | ||
531 | for (type = 0; type < MAP__NR_TYPES; ++type) { | |
532 | struct kmap *kmap; | |
533 | ||
534 | machine->vmlinux_maps[type] = map__new2(start, kernel, type); | |
535 | if (machine->vmlinux_maps[type] == NULL) | |
536 | return -1; | |
537 | ||
538 | machine->vmlinux_maps[type]->map_ip = | |
539 | machine->vmlinux_maps[type]->unmap_ip = | |
540 | identity__map_ip; | |
541 | kmap = map__kmap(machine->vmlinux_maps[type]); | |
542 | kmap->kmaps = &machine->kmaps; | |
543 | map_groups__insert(&machine->kmaps, | |
544 | machine->vmlinux_maps[type]); | |
545 | } | |
546 | ||
547 | return 0; | |
548 | } | |
549 | ||
550 | void machine__destroy_kernel_maps(struct machine *machine) | |
551 | { | |
552 | enum map_type type; | |
553 | ||
554 | for (type = 0; type < MAP__NR_TYPES; ++type) { | |
555 | struct kmap *kmap; | |
556 | ||
557 | if (machine->vmlinux_maps[type] == NULL) | |
558 | continue; | |
559 | ||
560 | kmap = map__kmap(machine->vmlinux_maps[type]); | |
561 | map_groups__remove(&machine->kmaps, | |
562 | machine->vmlinux_maps[type]); | |
563 | if (kmap->ref_reloc_sym) { | |
564 | /* | |
565 | * ref_reloc_sym is shared among all maps, so free just | |
566 | * on one of them. | |
567 | */ | |
568 | if (type == MAP__FUNCTION) { | |
04662523 ACM |
569 | zfree((char **)&kmap->ref_reloc_sym->name); |
570 | zfree(&kmap->ref_reloc_sym); | |
571 | } else | |
572 | kmap->ref_reloc_sym = NULL; | |
3f067dca ACM |
573 | } |
574 | ||
575 | map__delete(machine->vmlinux_maps[type]); | |
576 | machine->vmlinux_maps[type] = NULL; | |
577 | } | |
578 | } | |
579 | ||
876650e6 | 580 | int machines__create_guest_kernel_maps(struct machines *machines) |
3f067dca ACM |
581 | { |
582 | int ret = 0; | |
583 | struct dirent **namelist = NULL; | |
584 | int i, items = 0; | |
585 | char path[PATH_MAX]; | |
586 | pid_t pid; | |
587 | char *endp; | |
588 | ||
589 | if (symbol_conf.default_guest_vmlinux_name || | |
590 | symbol_conf.default_guest_modules || | |
591 | symbol_conf.default_guest_kallsyms) { | |
592 | machines__create_kernel_maps(machines, DEFAULT_GUEST_KERNEL_ID); | |
593 | } | |
594 | ||
595 | if (symbol_conf.guestmount) { | |
596 | items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL); | |
597 | if (items <= 0) | |
598 | return -ENOENT; | |
599 | for (i = 0; i < items; i++) { | |
600 | if (!isdigit(namelist[i]->d_name[0])) { | |
601 | /* Filter out . and .. */ | |
602 | continue; | |
603 | } | |
604 | pid = (pid_t)strtol(namelist[i]->d_name, &endp, 10); | |
605 | if ((*endp != '\0') || | |
606 | (endp == namelist[i]->d_name) || | |
607 | (errno == ERANGE)) { | |
608 | pr_debug("invalid directory (%s). Skipping.\n", | |
609 | namelist[i]->d_name); | |
610 | continue; | |
611 | } | |
612 | sprintf(path, "%s/%s/proc/kallsyms", | |
613 | symbol_conf.guestmount, | |
614 | namelist[i]->d_name); | |
615 | ret = access(path, R_OK); | |
616 | if (ret) { | |
617 | pr_debug("Can't access file %s\n", path); | |
618 | goto failure; | |
619 | } | |
620 | machines__create_kernel_maps(machines, pid); | |
621 | } | |
622 | failure: | |
623 | free(namelist); | |
624 | } | |
625 | ||
626 | return ret; | |
627 | } | |
628 | ||
876650e6 | 629 | void machines__destroy_kernel_maps(struct machines *machines) |
3f067dca | 630 | { |
876650e6 ACM |
631 | struct rb_node *next = rb_first(&machines->guests); |
632 | ||
633 | machine__destroy_kernel_maps(&machines->host); | |
3f067dca ACM |
634 | |
635 | while (next) { | |
636 | struct machine *pos = rb_entry(next, struct machine, rb_node); | |
637 | ||
638 | next = rb_next(&pos->rb_node); | |
876650e6 | 639 | rb_erase(&pos->rb_node, &machines->guests); |
3f067dca ACM |
640 | machine__delete(pos); |
641 | } | |
642 | } | |
643 | ||
876650e6 | 644 | int machines__create_kernel_maps(struct machines *machines, pid_t pid) |
3f067dca ACM |
645 | { |
646 | struct machine *machine = machines__findnew(machines, pid); | |
647 | ||
648 | if (machine == NULL) | |
649 | return -1; | |
650 | ||
651 | return machine__create_kernel_maps(machine); | |
652 | } | |
653 | ||
654 | int machine__load_kallsyms(struct machine *machine, const char *filename, | |
655 | enum map_type type, symbol_filter_t filter) | |
656 | { | |
657 | struct map *map = machine->vmlinux_maps[type]; | |
658 | int ret = dso__load_kallsyms(map->dso, filename, map, filter); | |
659 | ||
660 | if (ret > 0) { | |
661 | dso__set_loaded(map->dso, type); | |
662 | /* | |
663 | * Since /proc/kallsyms will have multiple sessions for the | |
664 | * kernel, with modules between them, fixup the end of all | |
665 | * sections. | |
666 | */ | |
667 | __map_groups__fixup_end(&machine->kmaps, type); | |
668 | } | |
669 | ||
670 | return ret; | |
671 | } | |
672 | ||
673 | int machine__load_vmlinux_path(struct machine *machine, enum map_type type, | |
674 | symbol_filter_t filter) | |
675 | { | |
676 | struct map *map = machine->vmlinux_maps[type]; | |
677 | int ret = dso__load_vmlinux_path(map->dso, map, filter); | |
678 | ||
39b12f78 | 679 | if (ret > 0) |
3f067dca | 680 | dso__set_loaded(map->dso, type); |
3f067dca ACM |
681 | |
682 | return ret; | |
683 | } | |
684 | ||
685 | static void map_groups__fixup_end(struct map_groups *mg) | |
686 | { | |
687 | int i; | |
688 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
689 | __map_groups__fixup_end(mg, i); | |
690 | } | |
691 | ||
692 | static char *get_kernel_version(const char *root_dir) | |
693 | { | |
694 | char version[PATH_MAX]; | |
695 | FILE *file; | |
696 | char *name, *tmp; | |
697 | const char *prefix = "Linux version "; | |
698 | ||
699 | sprintf(version, "%s/proc/version", root_dir); | |
700 | file = fopen(version, "r"); | |
701 | if (!file) | |
702 | return NULL; | |
703 | ||
704 | version[0] = '\0'; | |
705 | tmp = fgets(version, sizeof(version), file); | |
706 | fclose(file); | |
707 | ||
708 | name = strstr(version, prefix); | |
709 | if (!name) | |
710 | return NULL; | |
711 | name += strlen(prefix); | |
712 | tmp = strchr(name, ' '); | |
713 | if (tmp) | |
714 | *tmp = '\0'; | |
715 | ||
716 | return strdup(name); | |
717 | } | |
718 | ||
719 | static int map_groups__set_modules_path_dir(struct map_groups *mg, | |
720 | const char *dir_name) | |
721 | { | |
722 | struct dirent *dent; | |
723 | DIR *dir = opendir(dir_name); | |
724 | int ret = 0; | |
725 | ||
726 | if (!dir) { | |
727 | pr_debug("%s: cannot open %s dir\n", __func__, dir_name); | |
728 | return -1; | |
729 | } | |
730 | ||
731 | while ((dent = readdir(dir)) != NULL) { | |
732 | char path[PATH_MAX]; | |
733 | struct stat st; | |
734 | ||
735 | /*sshfs might return bad dent->d_type, so we have to stat*/ | |
736 | snprintf(path, sizeof(path), "%s/%s", dir_name, dent->d_name); | |
737 | if (stat(path, &st)) | |
738 | continue; | |
739 | ||
740 | if (S_ISDIR(st.st_mode)) { | |
741 | if (!strcmp(dent->d_name, ".") || | |
742 | !strcmp(dent->d_name, "..")) | |
743 | continue; | |
744 | ||
745 | ret = map_groups__set_modules_path_dir(mg, path); | |
746 | if (ret < 0) | |
747 | goto out; | |
748 | } else { | |
749 | char *dot = strrchr(dent->d_name, '.'), | |
750 | dso_name[PATH_MAX]; | |
751 | struct map *map; | |
752 | char *long_name; | |
753 | ||
754 | if (dot == NULL || strcmp(dot, ".ko")) | |
755 | continue; | |
756 | snprintf(dso_name, sizeof(dso_name), "[%.*s]", | |
757 | (int)(dot - dent->d_name), dent->d_name); | |
758 | ||
759 | strxfrchar(dso_name, '-', '_'); | |
760 | map = map_groups__find_by_name(mg, MAP__FUNCTION, | |
761 | dso_name); | |
762 | if (map == NULL) | |
763 | continue; | |
764 | ||
765 | long_name = strdup(path); | |
766 | if (long_name == NULL) { | |
767 | ret = -1; | |
768 | goto out; | |
769 | } | |
7e155d4d | 770 | dso__set_long_name(map->dso, long_name, true); |
3f067dca ACM |
771 | dso__kernel_module_get_build_id(map->dso, ""); |
772 | } | |
773 | } | |
774 | ||
775 | out: | |
776 | closedir(dir); | |
777 | return ret; | |
778 | } | |
779 | ||
780 | static int machine__set_modules_path(struct machine *machine) | |
781 | { | |
782 | char *version; | |
783 | char modules_path[PATH_MAX]; | |
784 | ||
785 | version = get_kernel_version(machine->root_dir); | |
786 | if (!version) | |
787 | return -1; | |
788 | ||
789 | snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s/kernel", | |
790 | machine->root_dir, version); | |
791 | free(version); | |
792 | ||
793 | return map_groups__set_modules_path_dir(&machine->kmaps, modules_path); | |
794 | } | |
795 | ||
316d70d6 | 796 | static int machine__create_module(void *arg, const char *name, u64 start) |
3f067dca | 797 | { |
316d70d6 | 798 | struct machine *machine = arg; |
3f067dca | 799 | struct map *map; |
316d70d6 AH |
800 | |
801 | map = machine__new_module(machine, start, name); | |
802 | if (map == NULL) | |
803 | return -1; | |
804 | ||
805 | dso__kernel_module_get_build_id(map->dso, machine->root_dir); | |
806 | ||
807 | return 0; | |
808 | } | |
809 | ||
810 | static int machine__create_modules(struct machine *machine) | |
811 | { | |
3f067dca ACM |
812 | const char *modules; |
813 | char path[PATH_MAX]; | |
814 | ||
f4be904d | 815 | if (machine__is_default_guest(machine)) { |
3f067dca | 816 | modules = symbol_conf.default_guest_modules; |
f4be904d AH |
817 | } else { |
818 | snprintf(path, PATH_MAX, "%s/proc/modules", machine->root_dir); | |
3f067dca ACM |
819 | modules = path; |
820 | } | |
821 | ||
aa7fe3b0 | 822 | if (symbol__restricted_filename(modules, "/proc/modules")) |
3f067dca ACM |
823 | return -1; |
824 | ||
316d70d6 | 825 | if (modules__parse(modules, machine, machine__create_module)) |
3f067dca ACM |
826 | return -1; |
827 | ||
316d70d6 AH |
828 | if (!machine__set_modules_path(machine)) |
829 | return 0; | |
3f067dca | 830 | |
316d70d6 | 831 | pr_debug("Problems setting modules path maps, continuing anyway...\n"); |
3f067dca | 832 | |
8f76fcd9 | 833 | return 0; |
3f067dca ACM |
834 | } |
835 | ||
5512cf24 AH |
836 | const char *ref_reloc_sym_names[] = {"_text", "_stext", NULL}; |
837 | ||
3f067dca ACM |
838 | int machine__create_kernel_maps(struct machine *machine) |
839 | { | |
840 | struct dso *kernel = machine__get_kernel(machine); | |
5512cf24 AH |
841 | char filename[PATH_MAX]; |
842 | const char *name; | |
843 | u64 addr = 0; | |
844 | int i; | |
845 | ||
846 | machine__get_kallsyms_filename(machine, filename, PATH_MAX); | |
847 | ||
848 | for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) { | |
849 | addr = kallsyms__get_function_start(filename, name); | |
850 | if (addr) | |
851 | break; | |
852 | } | |
853 | if (!addr) | |
854 | return -1; | |
3f067dca ACM |
855 | |
856 | if (kernel == NULL || | |
857 | __machine__create_kernel_maps(machine, kernel) < 0) | |
858 | return -1; | |
859 | ||
860 | if (symbol_conf.use_modules && machine__create_modules(machine) < 0) { | |
861 | if (machine__is_host(machine)) | |
862 | pr_debug("Problems creating module maps, " | |
863 | "continuing anyway...\n"); | |
864 | else | |
865 | pr_debug("Problems creating module maps for guest %d, " | |
866 | "continuing anyway...\n", machine->pid); | |
867 | } | |
868 | ||
869 | /* | |
870 | * Now that we have all the maps created, just set the ->end of them: | |
871 | */ | |
872 | map_groups__fixup_end(&machine->kmaps); | |
5512cf24 AH |
873 | |
874 | if (maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, name, | |
875 | addr)) { | |
876 | machine__destroy_kernel_maps(machine); | |
877 | return -1; | |
878 | } | |
879 | ||
3f067dca ACM |
880 | return 0; |
881 | } | |
882 | ||
b0a7d1a0 ACM |
883 | static void machine__set_kernel_mmap_len(struct machine *machine, |
884 | union perf_event *event) | |
885 | { | |
4552cf0f NK |
886 | int i; |
887 | ||
888 | for (i = 0; i < MAP__NR_TYPES; i++) { | |
889 | machine->vmlinux_maps[i]->start = event->mmap.start; | |
890 | machine->vmlinux_maps[i]->end = (event->mmap.start + | |
891 | event->mmap.len); | |
892 | /* | |
893 | * Be a bit paranoid here, some perf.data file came with | |
894 | * a zero sized synthesized MMAP event for the kernel. | |
895 | */ | |
896 | if (machine->vmlinux_maps[i]->end == 0) | |
897 | machine->vmlinux_maps[i]->end = ~0ULL; | |
898 | } | |
b0a7d1a0 ACM |
899 | } |
900 | ||
8e0cf965 AH |
901 | static bool machine__uses_kcore(struct machine *machine) |
902 | { | |
903 | struct dso *dso; | |
904 | ||
905 | list_for_each_entry(dso, &machine->kernel_dsos, node) { | |
906 | if (dso__is_kcore(dso)) | |
907 | return true; | |
908 | } | |
909 | ||
910 | return false; | |
911 | } | |
912 | ||
b0a7d1a0 ACM |
913 | static int machine__process_kernel_mmap_event(struct machine *machine, |
914 | union perf_event *event) | |
915 | { | |
916 | struct map *map; | |
917 | char kmmap_prefix[PATH_MAX]; | |
918 | enum dso_kernel_type kernel_type; | |
919 | bool is_kernel_mmap; | |
920 | ||
8e0cf965 AH |
921 | /* If we have maps from kcore then we do not need or want any others */ |
922 | if (machine__uses_kcore(machine)) | |
923 | return 0; | |
924 | ||
b0a7d1a0 ACM |
925 | machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix)); |
926 | if (machine__is_host(machine)) | |
927 | kernel_type = DSO_TYPE_KERNEL; | |
928 | else | |
929 | kernel_type = DSO_TYPE_GUEST_KERNEL; | |
930 | ||
931 | is_kernel_mmap = memcmp(event->mmap.filename, | |
932 | kmmap_prefix, | |
933 | strlen(kmmap_prefix) - 1) == 0; | |
934 | if (event->mmap.filename[0] == '/' || | |
935 | (!is_kernel_mmap && event->mmap.filename[0] == '[')) { | |
936 | ||
937 | char short_module_name[1024]; | |
938 | char *name, *dot; | |
939 | ||
940 | if (event->mmap.filename[0] == '/') { | |
941 | name = strrchr(event->mmap.filename, '/'); | |
942 | if (name == NULL) | |
943 | goto out_problem; | |
944 | ||
945 | ++name; /* skip / */ | |
946 | dot = strrchr(name, '.'); | |
947 | if (dot == NULL) | |
948 | goto out_problem; | |
949 | snprintf(short_module_name, sizeof(short_module_name), | |
950 | "[%.*s]", (int)(dot - name), name); | |
951 | strxfrchar(short_module_name, '-', '_'); | |
952 | } else | |
953 | strcpy(short_module_name, event->mmap.filename); | |
954 | ||
955 | map = machine__new_module(machine, event->mmap.start, | |
956 | event->mmap.filename); | |
957 | if (map == NULL) | |
958 | goto out_problem; | |
959 | ||
960 | name = strdup(short_module_name); | |
961 | if (name == NULL) | |
962 | goto out_problem; | |
963 | ||
58a98c9c | 964 | dso__set_short_name(map->dso, name, true); |
b0a7d1a0 ACM |
965 | map->end = map->start + event->mmap.len; |
966 | } else if (is_kernel_mmap) { | |
967 | const char *symbol_name = (event->mmap.filename + | |
968 | strlen(kmmap_prefix)); | |
969 | /* | |
970 | * Should be there already, from the build-id table in | |
971 | * the header. | |
972 | */ | |
973 | struct dso *kernel = __dsos__findnew(&machine->kernel_dsos, | |
974 | kmmap_prefix); | |
975 | if (kernel == NULL) | |
976 | goto out_problem; | |
977 | ||
978 | kernel->kernel = kernel_type; | |
979 | if (__machine__create_kernel_maps(machine, kernel) < 0) | |
980 | goto out_problem; | |
981 | ||
982 | machine__set_kernel_mmap_len(machine, event); | |
983 | ||
984 | /* | |
985 | * Avoid using a zero address (kptr_restrict) for the ref reloc | |
986 | * symbol. Effectively having zero here means that at record | |
987 | * time /proc/sys/kernel/kptr_restrict was non zero. | |
988 | */ | |
989 | if (event->mmap.pgoff != 0) { | |
990 | maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, | |
991 | symbol_name, | |
992 | event->mmap.pgoff); | |
993 | } | |
994 | ||
995 | if (machine__is_default_guest(machine)) { | |
996 | /* | |
997 | * preload dso of guest kernel and modules | |
998 | */ | |
999 | dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION], | |
1000 | NULL); | |
1001 | } | |
1002 | } | |
1003 | return 0; | |
1004 | out_problem: | |
1005 | return -1; | |
1006 | } | |
1007 | ||
5c5e854b | 1008 | int machine__process_mmap2_event(struct machine *machine, |
162f0bef FW |
1009 | union perf_event *event, |
1010 | struct perf_sample *sample __maybe_unused) | |
5c5e854b SE |
1011 | { |
1012 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
1013 | struct thread *thread; | |
1014 | struct map *map; | |
1015 | enum map_type type; | |
1016 | int ret = 0; | |
1017 | ||
1018 | if (dump_trace) | |
1019 | perf_event__fprintf_mmap2(event, stdout); | |
1020 | ||
1021 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || | |
1022 | cpumode == PERF_RECORD_MISC_KERNEL) { | |
1023 | ret = machine__process_kernel_mmap_event(machine, event); | |
1024 | if (ret < 0) | |
1025 | goto out_problem; | |
1026 | return 0; | |
1027 | } | |
1028 | ||
1029 | thread = machine__findnew_thread(machine, event->mmap2.pid, | |
11c9abf2 | 1030 | event->mmap2.tid); |
5c5e854b SE |
1031 | if (thread == NULL) |
1032 | goto out_problem; | |
1033 | ||
1034 | if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) | |
1035 | type = MAP__VARIABLE; | |
1036 | else | |
1037 | type = MAP__FUNCTION; | |
1038 | ||
1039 | map = map__new(&machine->user_dsos, event->mmap2.start, | |
1040 | event->mmap2.len, event->mmap2.pgoff, | |
1041 | event->mmap2.pid, event->mmap2.maj, | |
1042 | event->mmap2.min, event->mmap2.ino, | |
1043 | event->mmap2.ino_generation, | |
1044 | event->mmap2.filename, type); | |
1045 | ||
1046 | if (map == NULL) | |
1047 | goto out_problem; | |
1048 | ||
1049 | thread__insert_map(thread, map); | |
1050 | return 0; | |
1051 | ||
1052 | out_problem: | |
1053 | dump_printf("problem processing PERF_RECORD_MMAP2, skipping event.\n"); | |
1054 | return 0; | |
1055 | } | |
1056 | ||
162f0bef FW |
1057 | int machine__process_mmap_event(struct machine *machine, union perf_event *event, |
1058 | struct perf_sample *sample __maybe_unused) | |
b0a7d1a0 ACM |
1059 | { |
1060 | u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
1061 | struct thread *thread; | |
1062 | struct map *map; | |
bad40917 | 1063 | enum map_type type; |
b0a7d1a0 ACM |
1064 | int ret = 0; |
1065 | ||
1066 | if (dump_trace) | |
1067 | perf_event__fprintf_mmap(event, stdout); | |
1068 | ||
1069 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || | |
1070 | cpumode == PERF_RECORD_MISC_KERNEL) { | |
1071 | ret = machine__process_kernel_mmap_event(machine, event); | |
1072 | if (ret < 0) | |
1073 | goto out_problem; | |
1074 | return 0; | |
1075 | } | |
1076 | ||
314add6b | 1077 | thread = machine__findnew_thread(machine, event->mmap.pid, |
11c9abf2 | 1078 | event->mmap.tid); |
b0a7d1a0 ACM |
1079 | if (thread == NULL) |
1080 | goto out_problem; | |
bad40917 SE |
1081 | |
1082 | if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) | |
1083 | type = MAP__VARIABLE; | |
1084 | else | |
1085 | type = MAP__FUNCTION; | |
1086 | ||
b0a7d1a0 ACM |
1087 | map = map__new(&machine->user_dsos, event->mmap.start, |
1088 | event->mmap.len, event->mmap.pgoff, | |
5c5e854b SE |
1089 | event->mmap.pid, 0, 0, 0, 0, |
1090 | event->mmap.filename, | |
bad40917 SE |
1091 | type); |
1092 | ||
b0a7d1a0 ACM |
1093 | if (map == NULL) |
1094 | goto out_problem; | |
1095 | ||
1096 | thread__insert_map(thread, map); | |
1097 | return 0; | |
1098 | ||
1099 | out_problem: | |
1100 | dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); | |
1101 | return 0; | |
1102 | } | |
1103 | ||
236a3bbd DA |
1104 | static void machine__remove_thread(struct machine *machine, struct thread *th) |
1105 | { | |
1106 | machine->last_match = NULL; | |
1107 | rb_erase(&th->rb_node, &machine->threads); | |
1108 | /* | |
1109 | * We may have references to this thread, for instance in some hist_entry | |
1110 | * instances, so just move them to a separate list. | |
1111 | */ | |
1112 | list_add_tail(&th->node, &machine->dead_threads); | |
1113 | } | |
1114 | ||
162f0bef FW |
1115 | int machine__process_fork_event(struct machine *machine, union perf_event *event, |
1116 | struct perf_sample *sample) | |
b0a7d1a0 | 1117 | { |
d75e6097 JO |
1118 | struct thread *thread = machine__find_thread(machine, |
1119 | event->fork.pid, | |
1120 | event->fork.tid); | |
314add6b AH |
1121 | struct thread *parent = machine__findnew_thread(machine, |
1122 | event->fork.ppid, | |
1123 | event->fork.ptid); | |
b0a7d1a0 | 1124 | |
236a3bbd DA |
1125 | /* if a thread currently exists for the thread id remove it */ |
1126 | if (thread != NULL) | |
1127 | machine__remove_thread(machine, thread); | |
1128 | ||
314add6b AH |
1129 | thread = machine__findnew_thread(machine, event->fork.pid, |
1130 | event->fork.tid); | |
b0a7d1a0 ACM |
1131 | if (dump_trace) |
1132 | perf_event__fprintf_task(event, stdout); | |
1133 | ||
1134 | if (thread == NULL || parent == NULL || | |
162f0bef | 1135 | thread__fork(thread, parent, sample->time) < 0) { |
b0a7d1a0 ACM |
1136 | dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); |
1137 | return -1; | |
1138 | } | |
1139 | ||
1140 | return 0; | |
1141 | } | |
1142 | ||
162f0bef FW |
1143 | int machine__process_exit_event(struct machine *machine, union perf_event *event, |
1144 | struct perf_sample *sample __maybe_unused) | |
b0a7d1a0 | 1145 | { |
d75e6097 JO |
1146 | struct thread *thread = machine__find_thread(machine, |
1147 | event->fork.pid, | |
1148 | event->fork.tid); | |
b0a7d1a0 ACM |
1149 | |
1150 | if (dump_trace) | |
1151 | perf_event__fprintf_task(event, stdout); | |
1152 | ||
1153 | if (thread != NULL) | |
236a3bbd | 1154 | thread__exited(thread); |
b0a7d1a0 ACM |
1155 | |
1156 | return 0; | |
1157 | } | |
1158 | ||
162f0bef FW |
1159 | int machine__process_event(struct machine *machine, union perf_event *event, |
1160 | struct perf_sample *sample) | |
b0a7d1a0 ACM |
1161 | { |
1162 | int ret; | |
1163 | ||
1164 | switch (event->header.type) { | |
1165 | case PERF_RECORD_COMM: | |
162f0bef | 1166 | ret = machine__process_comm_event(machine, event, sample); break; |
b0a7d1a0 | 1167 | case PERF_RECORD_MMAP: |
162f0bef | 1168 | ret = machine__process_mmap_event(machine, event, sample); break; |
5c5e854b | 1169 | case PERF_RECORD_MMAP2: |
162f0bef | 1170 | ret = machine__process_mmap2_event(machine, event, sample); break; |
b0a7d1a0 | 1171 | case PERF_RECORD_FORK: |
162f0bef | 1172 | ret = machine__process_fork_event(machine, event, sample); break; |
b0a7d1a0 | 1173 | case PERF_RECORD_EXIT: |
162f0bef | 1174 | ret = machine__process_exit_event(machine, event, sample); break; |
b0a7d1a0 | 1175 | case PERF_RECORD_LOST: |
162f0bef | 1176 | ret = machine__process_lost_event(machine, event, sample); break; |
b0a7d1a0 ACM |
1177 | default: |
1178 | ret = -1; | |
1179 | break; | |
1180 | } | |
1181 | ||
1182 | return ret; | |
1183 | } | |
3f067dca | 1184 | |
b21484f1 | 1185 | static bool symbol__match_regex(struct symbol *sym, regex_t *regex) |
3f067dca | 1186 | { |
b21484f1 | 1187 | if (sym->name && !regexec(regex, sym->name, 0, NULL, 0)) |
3f067dca | 1188 | return 1; |
3f067dca ACM |
1189 | return 0; |
1190 | } | |
1191 | ||
3f067dca ACM |
1192 | static void ip__resolve_ams(struct machine *machine, struct thread *thread, |
1193 | struct addr_map_symbol *ams, | |
1194 | u64 ip) | |
1195 | { | |
1196 | struct addr_location al; | |
3f067dca ACM |
1197 | |
1198 | memset(&al, 0, sizeof(al)); | |
52a3cb8c ACM |
1199 | /* |
1200 | * We cannot use the header.misc hint to determine whether a | |
1201 | * branch stack address is user, kernel, guest, hypervisor. | |
1202 | * Branches may straddle the kernel/user/hypervisor boundaries. | |
1203 | * Thus, we have to try consecutively until we find a match | |
1204 | * or else, the symbol is unknown | |
1205 | */ | |
1206 | thread__find_cpumode_addr_location(thread, machine, MAP__FUNCTION, ip, &al); | |
3f067dca | 1207 | |
3f067dca ACM |
1208 | ams->addr = ip; |
1209 | ams->al_addr = al.addr; | |
1210 | ams->sym = al.sym; | |
1211 | ams->map = al.map; | |
1212 | } | |
1213 | ||
98a3b32c SE |
1214 | static void ip__resolve_data(struct machine *machine, struct thread *thread, |
1215 | u8 m, struct addr_map_symbol *ams, u64 addr) | |
1216 | { | |
1217 | struct addr_location al; | |
1218 | ||
1219 | memset(&al, 0, sizeof(al)); | |
1220 | ||
61710bde AH |
1221 | thread__find_addr_location(thread, machine, m, MAP__VARIABLE, addr, |
1222 | &al); | |
98a3b32c SE |
1223 | ams->addr = addr; |
1224 | ams->al_addr = al.addr; | |
1225 | ams->sym = al.sym; | |
1226 | ams->map = al.map; | |
1227 | } | |
1228 | ||
e80faac0 ACM |
1229 | struct mem_info *sample__resolve_mem(struct perf_sample *sample, |
1230 | struct addr_location *al) | |
98a3b32c SE |
1231 | { |
1232 | struct mem_info *mi = zalloc(sizeof(*mi)); | |
1233 | ||
1234 | if (!mi) | |
1235 | return NULL; | |
1236 | ||
e80faac0 ACM |
1237 | ip__resolve_ams(al->machine, al->thread, &mi->iaddr, sample->ip); |
1238 | ip__resolve_data(al->machine, al->thread, al->cpumode, | |
1239 | &mi->daddr, sample->addr); | |
98a3b32c SE |
1240 | mi->data_src.val = sample->data_src; |
1241 | ||
1242 | return mi; | |
1243 | } | |
1244 | ||
644f2df2 ACM |
1245 | struct branch_info *sample__resolve_bstack(struct perf_sample *sample, |
1246 | struct addr_location *al) | |
3f067dca | 1247 | { |
3f067dca | 1248 | unsigned int i; |
644f2df2 ACM |
1249 | const struct branch_stack *bs = sample->branch_stack; |
1250 | struct branch_info *bi = calloc(bs->nr, sizeof(struct branch_info)); | |
3f067dca | 1251 | |
3f067dca ACM |
1252 | if (!bi) |
1253 | return NULL; | |
1254 | ||
1255 | for (i = 0; i < bs->nr; i++) { | |
644f2df2 ACM |
1256 | ip__resolve_ams(al->machine, al->thread, &bi[i].to, bs->entries[i].to); |
1257 | ip__resolve_ams(al->machine, al->thread, &bi[i].from, bs->entries[i].from); | |
3f067dca ACM |
1258 | bi[i].flags = bs->entries[i].flags; |
1259 | } | |
1260 | return bi; | |
1261 | } | |
1262 | ||
1263 | static int machine__resolve_callchain_sample(struct machine *machine, | |
1264 | struct thread *thread, | |
1265 | struct ip_callchain *chain, | |
b21484f1 | 1266 | struct symbol **parent, |
91e95617 WL |
1267 | struct addr_location *root_al, |
1268 | int max_stack) | |
3f067dca ACM |
1269 | { |
1270 | u8 cpumode = PERF_RECORD_MISC_USER; | |
91e95617 WL |
1271 | int chain_nr = min(max_stack, (int)chain->nr); |
1272 | int i; | |
3f067dca ACM |
1273 | int err; |
1274 | ||
1275 | callchain_cursor_reset(&callchain_cursor); | |
1276 | ||
1277 | if (chain->nr > PERF_MAX_STACK_DEPTH) { | |
1278 | pr_warning("corrupted callchain. skipping...\n"); | |
1279 | return 0; | |
1280 | } | |
1281 | ||
91e95617 | 1282 | for (i = 0; i < chain_nr; i++) { |
3f067dca ACM |
1283 | u64 ip; |
1284 | struct addr_location al; | |
1285 | ||
1286 | if (callchain_param.order == ORDER_CALLEE) | |
1287 | ip = chain->ips[i]; | |
1288 | else | |
1289 | ip = chain->ips[chain->nr - i - 1]; | |
1290 | ||
1291 | if (ip >= PERF_CONTEXT_MAX) { | |
1292 | switch (ip) { | |
1293 | case PERF_CONTEXT_HV: | |
1294 | cpumode = PERF_RECORD_MISC_HYPERVISOR; | |
1295 | break; | |
1296 | case PERF_CONTEXT_KERNEL: | |
1297 | cpumode = PERF_RECORD_MISC_KERNEL; | |
1298 | break; | |
1299 | case PERF_CONTEXT_USER: | |
1300 | cpumode = PERF_RECORD_MISC_USER; | |
1301 | break; | |
1302 | default: | |
1303 | pr_debug("invalid callchain context: " | |
1304 | "%"PRId64"\n", (s64) ip); | |
1305 | /* | |
1306 | * It seems the callchain is corrupted. | |
1307 | * Discard all. | |
1308 | */ | |
1309 | callchain_cursor_reset(&callchain_cursor); | |
1310 | return 0; | |
1311 | } | |
1312 | continue; | |
1313 | } | |
1314 | ||
b3cef7f6 | 1315 | al.filtered = 0; |
3f067dca | 1316 | thread__find_addr_location(thread, machine, cpumode, |
61710bde | 1317 | MAP__FUNCTION, ip, &al); |
3f067dca ACM |
1318 | if (al.sym != NULL) { |
1319 | if (sort__has_parent && !*parent && | |
b21484f1 | 1320 | symbol__match_regex(al.sym, &parent_regex)) |
3f067dca | 1321 | *parent = al.sym; |
b21484f1 GP |
1322 | else if (have_ignore_callees && root_al && |
1323 | symbol__match_regex(al.sym, &ignore_callees_regex)) { | |
1324 | /* Treat this symbol as the root, | |
1325 | forgetting its callees. */ | |
1326 | *root_al = al; | |
1327 | callchain_cursor_reset(&callchain_cursor); | |
1328 | } | |
3f067dca ACM |
1329 | } |
1330 | ||
1331 | err = callchain_cursor_append(&callchain_cursor, | |
1332 | ip, al.map, al.sym); | |
1333 | if (err) | |
1334 | return err; | |
1335 | } | |
1336 | ||
1337 | return 0; | |
1338 | } | |
1339 | ||
1340 | static int unwind_entry(struct unwind_entry *entry, void *arg) | |
1341 | { | |
1342 | struct callchain_cursor *cursor = arg; | |
1343 | return callchain_cursor_append(cursor, entry->ip, | |
1344 | entry->map, entry->sym); | |
1345 | } | |
1346 | ||
1347 | int machine__resolve_callchain(struct machine *machine, | |
1348 | struct perf_evsel *evsel, | |
1349 | struct thread *thread, | |
1350 | struct perf_sample *sample, | |
b21484f1 | 1351 | struct symbol **parent, |
91e95617 WL |
1352 | struct addr_location *root_al, |
1353 | int max_stack) | |
3f067dca ACM |
1354 | { |
1355 | int ret; | |
1356 | ||
3f067dca | 1357 | ret = machine__resolve_callchain_sample(machine, thread, |
91e95617 WL |
1358 | sample->callchain, parent, |
1359 | root_al, max_stack); | |
3f067dca ACM |
1360 | if (ret) |
1361 | return ret; | |
1362 | ||
1363 | /* Can we do dwarf post unwind? */ | |
1364 | if (!((evsel->attr.sample_type & PERF_SAMPLE_REGS_USER) && | |
1365 | (evsel->attr.sample_type & PERF_SAMPLE_STACK_USER))) | |
1366 | return 0; | |
1367 | ||
1368 | /* Bail out if nothing was captured. */ | |
1369 | if ((!sample->user_regs.regs) || | |
1370 | (!sample->user_stack.size)) | |
1371 | return 0; | |
1372 | ||
1373 | return unwind__get_entries(unwind_entry, &callchain_cursor, machine, | |
352ea45a | 1374 | thread, sample, max_stack); |
3f067dca ACM |
1375 | |
1376 | } | |
35feee19 DA |
1377 | |
1378 | int machine__for_each_thread(struct machine *machine, | |
1379 | int (*fn)(struct thread *thread, void *p), | |
1380 | void *priv) | |
1381 | { | |
1382 | struct rb_node *nd; | |
1383 | struct thread *thread; | |
1384 | int rc = 0; | |
1385 | ||
1386 | for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) { | |
1387 | thread = rb_entry(nd, struct thread, rb_node); | |
1388 | rc = fn(thread, priv); | |
1389 | if (rc != 0) | |
1390 | return rc; | |
1391 | } | |
1392 | ||
1393 | list_for_each_entry(thread, &machine->dead_threads, node) { | |
1394 | rc = fn(thread, priv); | |
1395 | if (rc != 0) | |
1396 | return rc; | |
1397 | } | |
1398 | return rc; | |
1399 | } | |
58d925dc | 1400 | |
a33fbd56 | 1401 | int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool, |
602ad878 | 1402 | struct target *target, struct thread_map *threads, |
a33fbd56 | 1403 | perf_event__handler_t process, bool data_mmap) |
58d925dc | 1404 | { |
602ad878 | 1405 | if (target__has_task(target)) |
58d925dc | 1406 | return perf_event__synthesize_thread_map(tool, threads, process, machine, data_mmap); |
602ad878 | 1407 | else if (target__has_cpu(target)) |
58d925dc ACM |
1408 | return perf_event__synthesize_threads(tool, process, machine, data_mmap); |
1409 | /* command specified */ | |
1410 | return 0; | |
1411 | } |