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 | 10 | #include "thread.h" |
d027b640 | 11 | #include "vdso.h" |
9d2f8e22 | 12 | #include <stdbool.h> |
c506c96b | 13 | #include <symbol/kallsyms.h> |
3f067dca | 14 | #include "unwind.h" |
8b7bad58 | 15 | #include "linux/hash.h" |
9d2f8e22 | 16 | |
b91fc39f ACM |
17 | static void __machine__remove_thread(struct machine *machine, struct thread *th, bool lock); |
18 | ||
e167f995 ACM |
19 | static void dsos__init(struct dsos *dsos) |
20 | { | |
21 | INIT_LIST_HEAD(&dsos->head); | |
22 | dsos->root = RB_ROOT; | |
e8807844 | 23 | pthread_rwlock_init(&dsos->lock, NULL); |
e167f995 ACM |
24 | } |
25 | ||
69d2591a ACM |
26 | int machine__init(struct machine *machine, const char *root_dir, pid_t pid) |
27 | { | |
93b0ba3c | 28 | memset(machine, 0, sizeof(*machine)); |
11246c70 | 29 | map_groups__init(&machine->kmaps, machine); |
69d2591a | 30 | RB_CLEAR_NODE(&machine->rb_node); |
3d39ac53 | 31 | dsos__init(&machine->dsos); |
69d2591a ACM |
32 | |
33 | machine->threads = RB_ROOT; | |
b91fc39f | 34 | pthread_rwlock_init(&machine->threads_lock, NULL); |
d2c11034 | 35 | machine->nr_threads = 0; |
69d2591a ACM |
36 | INIT_LIST_HEAD(&machine->dead_threads); |
37 | machine->last_match = NULL; | |
38 | ||
d027b640 | 39 | machine->vdso_info = NULL; |
4cde998d | 40 | machine->env = NULL; |
d027b640 | 41 | |
69d2591a ACM |
42 | machine->pid = pid; |
43 | ||
611a5ce8 | 44 | machine->symbol_filter = NULL; |
14bd6d20 | 45 | machine->id_hdr_size = 0; |
cfe1c414 | 46 | machine->comm_exec = false; |
fbe2af45 | 47 | machine->kernel_start = 0; |
611a5ce8 | 48 | |
cc1121ab MH |
49 | memset(machine->vmlinux_maps, 0, sizeof(machine->vmlinux_maps)); |
50 | ||
69d2591a ACM |
51 | machine->root_dir = strdup(root_dir); |
52 | if (machine->root_dir == NULL) | |
53 | return -ENOMEM; | |
54 | ||
55 | if (pid != HOST_KERNEL_ID) { | |
1fcb8768 | 56 | struct thread *thread = machine__findnew_thread(machine, -1, |
314add6b | 57 | pid); |
69d2591a ACM |
58 | char comm[64]; |
59 | ||
60 | if (thread == NULL) | |
61 | return -ENOMEM; | |
62 | ||
63 | snprintf(comm, sizeof(comm), "[guest/%d]", pid); | |
162f0bef | 64 | thread__set_comm(thread, comm, 0); |
b91fc39f | 65 | thread__put(thread); |
69d2591a ACM |
66 | } |
67 | ||
b9d266ba AH |
68 | machine->current_tid = NULL; |
69 | ||
69d2591a ACM |
70 | return 0; |
71 | } | |
72 | ||
8fb598e5 DA |
73 | struct machine *machine__new_host(void) |
74 | { | |
75 | struct machine *machine = malloc(sizeof(*machine)); | |
76 | ||
77 | if (machine != NULL) { | |
78 | machine__init(machine, "", HOST_KERNEL_ID); | |
79 | ||
80 | if (machine__create_kernel_maps(machine) < 0) | |
81 | goto out_delete; | |
82 | } | |
83 | ||
84 | return machine; | |
85 | out_delete: | |
86 | free(machine); | |
87 | return NULL; | |
88 | } | |
89 | ||
d3a7c489 | 90 | static void dsos__purge(struct dsos *dsos) |
69d2591a ACM |
91 | { |
92 | struct dso *pos, *n; | |
93 | ||
e8807844 ACM |
94 | pthread_rwlock_wrlock(&dsos->lock); |
95 | ||
8fa7d87f | 96 | list_for_each_entry_safe(pos, n, &dsos->head, node) { |
4598a0a6 | 97 | RB_CLEAR_NODE(&pos->rb_node); |
e266a753 | 98 | pos->root = NULL; |
d3a7c489 ACM |
99 | list_del_init(&pos->node); |
100 | dso__put(pos); | |
69d2591a | 101 | } |
e8807844 ACM |
102 | |
103 | pthread_rwlock_unlock(&dsos->lock); | |
d3a7c489 | 104 | } |
e8807844 | 105 | |
d3a7c489 ACM |
106 | static void dsos__exit(struct dsos *dsos) |
107 | { | |
108 | dsos__purge(dsos); | |
e8807844 | 109 | pthread_rwlock_destroy(&dsos->lock); |
69d2591a ACM |
110 | } |
111 | ||
3f067dca ACM |
112 | void machine__delete_threads(struct machine *machine) |
113 | { | |
b91fc39f | 114 | struct rb_node *nd; |
3f067dca | 115 | |
b91fc39f ACM |
116 | pthread_rwlock_wrlock(&machine->threads_lock); |
117 | nd = rb_first(&machine->threads); | |
3f067dca ACM |
118 | while (nd) { |
119 | struct thread *t = rb_entry(nd, struct thread, rb_node); | |
120 | ||
3f067dca | 121 | nd = rb_next(nd); |
b91fc39f | 122 | __machine__remove_thread(machine, t, false); |
3f067dca | 123 | } |
b91fc39f | 124 | pthread_rwlock_unlock(&machine->threads_lock); |
3f067dca ACM |
125 | } |
126 | ||
69d2591a ACM |
127 | void machine__exit(struct machine *machine) |
128 | { | |
ebe9729c | 129 | machine__destroy_kernel_maps(machine); |
69d2591a | 130 | map_groups__exit(&machine->kmaps); |
e8807844 | 131 | dsos__exit(&machine->dsos); |
9a4388c7 | 132 | machine__exit_vdso(machine); |
04662523 | 133 | zfree(&machine->root_dir); |
b9d266ba | 134 | zfree(&machine->current_tid); |
b91fc39f | 135 | pthread_rwlock_destroy(&machine->threads_lock); |
69d2591a ACM |
136 | } |
137 | ||
138 | void machine__delete(struct machine *machine) | |
139 | { | |
140 | machine__exit(machine); | |
141 | free(machine); | |
142 | } | |
143 | ||
876650e6 ACM |
144 | void machines__init(struct machines *machines) |
145 | { | |
146 | machine__init(&machines->host, "", HOST_KERNEL_ID); | |
147 | machines->guests = RB_ROOT; | |
611a5ce8 | 148 | machines->symbol_filter = NULL; |
876650e6 ACM |
149 | } |
150 | ||
151 | void machines__exit(struct machines *machines) | |
152 | { | |
153 | machine__exit(&machines->host); | |
154 | /* XXX exit guest */ | |
155 | } | |
156 | ||
157 | struct machine *machines__add(struct machines *machines, pid_t pid, | |
69d2591a ACM |
158 | const char *root_dir) |
159 | { | |
876650e6 | 160 | struct rb_node **p = &machines->guests.rb_node; |
69d2591a ACM |
161 | struct rb_node *parent = NULL; |
162 | struct machine *pos, *machine = malloc(sizeof(*machine)); | |
163 | ||
164 | if (machine == NULL) | |
165 | return NULL; | |
166 | ||
167 | if (machine__init(machine, root_dir, pid) != 0) { | |
168 | free(machine); | |
169 | return NULL; | |
170 | } | |
171 | ||
611a5ce8 AH |
172 | machine->symbol_filter = machines->symbol_filter; |
173 | ||
69d2591a ACM |
174 | while (*p != NULL) { |
175 | parent = *p; | |
176 | pos = rb_entry(parent, struct machine, rb_node); | |
177 | if (pid < pos->pid) | |
178 | p = &(*p)->rb_left; | |
179 | else | |
180 | p = &(*p)->rb_right; | |
181 | } | |
182 | ||
183 | rb_link_node(&machine->rb_node, parent, p); | |
876650e6 | 184 | rb_insert_color(&machine->rb_node, &machines->guests); |
69d2591a ACM |
185 | |
186 | return machine; | |
187 | } | |
188 | ||
611a5ce8 AH |
189 | void machines__set_symbol_filter(struct machines *machines, |
190 | symbol_filter_t symbol_filter) | |
191 | { | |
192 | struct rb_node *nd; | |
193 | ||
194 | machines->symbol_filter = symbol_filter; | |
195 | machines->host.symbol_filter = symbol_filter; | |
196 | ||
197 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { | |
198 | struct machine *machine = rb_entry(nd, struct machine, rb_node); | |
199 | ||
200 | machine->symbol_filter = symbol_filter; | |
201 | } | |
202 | } | |
203 | ||
cfe1c414 AH |
204 | void machines__set_comm_exec(struct machines *machines, bool comm_exec) |
205 | { | |
206 | struct rb_node *nd; | |
207 | ||
208 | machines->host.comm_exec = comm_exec; | |
209 | ||
210 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { | |
211 | struct machine *machine = rb_entry(nd, struct machine, rb_node); | |
212 | ||
213 | machine->comm_exec = comm_exec; | |
214 | } | |
215 | } | |
216 | ||
876650e6 | 217 | struct machine *machines__find(struct machines *machines, pid_t pid) |
69d2591a | 218 | { |
876650e6 | 219 | struct rb_node **p = &machines->guests.rb_node; |
69d2591a ACM |
220 | struct rb_node *parent = NULL; |
221 | struct machine *machine; | |
222 | struct machine *default_machine = NULL; | |
223 | ||
876650e6 ACM |
224 | if (pid == HOST_KERNEL_ID) |
225 | return &machines->host; | |
226 | ||
69d2591a ACM |
227 | while (*p != NULL) { |
228 | parent = *p; | |
229 | machine = rb_entry(parent, struct machine, rb_node); | |
230 | if (pid < machine->pid) | |
231 | p = &(*p)->rb_left; | |
232 | else if (pid > machine->pid) | |
233 | p = &(*p)->rb_right; | |
234 | else | |
235 | return machine; | |
236 | if (!machine->pid) | |
237 | default_machine = machine; | |
238 | } | |
239 | ||
240 | return default_machine; | |
241 | } | |
242 | ||
876650e6 | 243 | struct machine *machines__findnew(struct machines *machines, pid_t pid) |
69d2591a ACM |
244 | { |
245 | char path[PATH_MAX]; | |
246 | const char *root_dir = ""; | |
247 | struct machine *machine = machines__find(machines, pid); | |
248 | ||
249 | if (machine && (machine->pid == pid)) | |
250 | goto out; | |
251 | ||
252 | if ((pid != HOST_KERNEL_ID) && | |
253 | (pid != DEFAULT_GUEST_KERNEL_ID) && | |
254 | (symbol_conf.guestmount)) { | |
255 | sprintf(path, "%s/%d", symbol_conf.guestmount, pid); | |
256 | if (access(path, R_OK)) { | |
257 | static struct strlist *seen; | |
258 | ||
259 | if (!seen) | |
4a77e218 | 260 | seen = strlist__new(NULL, NULL); |
69d2591a ACM |
261 | |
262 | if (!strlist__has_entry(seen, path)) { | |
263 | pr_err("Can't access file %s\n", path); | |
264 | strlist__add(seen, path); | |
265 | } | |
266 | machine = NULL; | |
267 | goto out; | |
268 | } | |
269 | root_dir = path; | |
270 | } | |
271 | ||
272 | machine = machines__add(machines, pid, root_dir); | |
273 | out: | |
274 | return machine; | |
275 | } | |
276 | ||
876650e6 ACM |
277 | void machines__process_guests(struct machines *machines, |
278 | machine__process_t process, void *data) | |
69d2591a ACM |
279 | { |
280 | struct rb_node *nd; | |
281 | ||
876650e6 | 282 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { |
69d2591a ACM |
283 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
284 | process(pos, data); | |
285 | } | |
286 | } | |
287 | ||
288 | char *machine__mmap_name(struct machine *machine, char *bf, size_t size) | |
289 | { | |
290 | if (machine__is_host(machine)) | |
291 | snprintf(bf, size, "[%s]", "kernel.kallsyms"); | |
292 | else if (machine__is_default_guest(machine)) | |
293 | snprintf(bf, size, "[%s]", "guest.kernel.kallsyms"); | |
294 | else { | |
295 | snprintf(bf, size, "[%s.%d]", "guest.kernel.kallsyms", | |
296 | machine->pid); | |
297 | } | |
298 | ||
299 | return bf; | |
300 | } | |
301 | ||
876650e6 | 302 | void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size) |
69d2591a ACM |
303 | { |
304 | struct rb_node *node; | |
305 | struct machine *machine; | |
306 | ||
876650e6 ACM |
307 | machines->host.id_hdr_size = id_hdr_size; |
308 | ||
309 | for (node = rb_first(&machines->guests); node; node = rb_next(node)) { | |
69d2591a ACM |
310 | machine = rb_entry(node, struct machine, rb_node); |
311 | machine->id_hdr_size = id_hdr_size; | |
312 | } | |
313 | ||
314 | return; | |
315 | } | |
316 | ||
29ce3612 AH |
317 | static void machine__update_thread_pid(struct machine *machine, |
318 | struct thread *th, pid_t pid) | |
319 | { | |
320 | struct thread *leader; | |
321 | ||
322 | if (pid == th->pid_ || pid == -1 || th->pid_ != -1) | |
323 | return; | |
324 | ||
325 | th->pid_ = pid; | |
326 | ||
327 | if (th->pid_ == th->tid) | |
328 | return; | |
329 | ||
b91fc39f | 330 | leader = __machine__findnew_thread(machine, th->pid_, th->pid_); |
29ce3612 AH |
331 | if (!leader) |
332 | goto out_err; | |
333 | ||
334 | if (!leader->mg) | |
11246c70 | 335 | leader->mg = map_groups__new(machine); |
29ce3612 AH |
336 | |
337 | if (!leader->mg) | |
338 | goto out_err; | |
339 | ||
340 | if (th->mg == leader->mg) | |
341 | return; | |
342 | ||
343 | if (th->mg) { | |
344 | /* | |
345 | * Maps are created from MMAP events which provide the pid and | |
346 | * tid. Consequently there never should be any maps on a thread | |
347 | * with an unknown pid. Just print an error if there are. | |
348 | */ | |
349 | if (!map_groups__empty(th->mg)) | |
350 | pr_err("Discarding thread maps for %d:%d\n", | |
351 | th->pid_, th->tid); | |
8e160b2e | 352 | map_groups__put(th->mg); |
29ce3612 AH |
353 | } |
354 | ||
355 | th->mg = map_groups__get(leader->mg); | |
abd82868 ACM |
356 | out_put: |
357 | thread__put(leader); | |
29ce3612 | 358 | return; |
29ce3612 AH |
359 | out_err: |
360 | pr_err("Failed to join map groups for %d:%d\n", th->pid_, th->tid); | |
abd82868 | 361 | goto out_put; |
29ce3612 AH |
362 | } |
363 | ||
abd82868 ACM |
364 | /* |
365 | * Caller must eventually drop thread->refcnt returned with a successfull | |
366 | * lookup/new thread inserted. | |
367 | */ | |
b91fc39f ACM |
368 | static struct thread *____machine__findnew_thread(struct machine *machine, |
369 | pid_t pid, pid_t tid, | |
370 | bool create) | |
9d2f8e22 ACM |
371 | { |
372 | struct rb_node **p = &machine->threads.rb_node; | |
373 | struct rb_node *parent = NULL; | |
374 | struct thread *th; | |
375 | ||
376 | /* | |
38051234 | 377 | * Front-end cache - TID lookups come in blocks, |
9d2f8e22 ACM |
378 | * so most of the time we dont have to look up |
379 | * the full rbtree: | |
380 | */ | |
29ce3612 | 381 | th = machine->last_match; |
f3b623b8 ACM |
382 | if (th != NULL) { |
383 | if (th->tid == tid) { | |
384 | machine__update_thread_pid(machine, th, pid); | |
abd82868 | 385 | return thread__get(th); |
f3b623b8 ACM |
386 | } |
387 | ||
0ceb8f6e | 388 | machine->last_match = NULL; |
99d725fc | 389 | } |
9d2f8e22 ACM |
390 | |
391 | while (*p != NULL) { | |
392 | parent = *p; | |
393 | th = rb_entry(parent, struct thread, rb_node); | |
394 | ||
38051234 | 395 | if (th->tid == tid) { |
0ceb8f6e | 396 | machine->last_match = th; |
29ce3612 | 397 | machine__update_thread_pid(machine, th, pid); |
abd82868 | 398 | return thread__get(th); |
9d2f8e22 ACM |
399 | } |
400 | ||
38051234 | 401 | if (tid < th->tid) |
9d2f8e22 ACM |
402 | p = &(*p)->rb_left; |
403 | else | |
404 | p = &(*p)->rb_right; | |
405 | } | |
406 | ||
407 | if (!create) | |
408 | return NULL; | |
409 | ||
99d725fc | 410 | th = thread__new(pid, tid); |
9d2f8e22 ACM |
411 | if (th != NULL) { |
412 | rb_link_node(&th->rb_node, parent, p); | |
413 | rb_insert_color(&th->rb_node, &machine->threads); | |
cddcef60 JO |
414 | |
415 | /* | |
416 | * We have to initialize map_groups separately | |
417 | * after rb tree is updated. | |
418 | * | |
419 | * The reason is that we call machine__findnew_thread | |
420 | * within thread__init_map_groups to find the thread | |
421 | * leader and that would screwed the rb tree. | |
422 | */ | |
418029b7 | 423 | if (thread__init_map_groups(th, machine)) { |
0170b14f | 424 | rb_erase_init(&th->rb_node, &machine->threads); |
b91fc39f | 425 | RB_CLEAR_NODE(&th->rb_node); |
abd82868 | 426 | thread__put(th); |
cddcef60 | 427 | return NULL; |
418029b7 | 428 | } |
f3b623b8 ACM |
429 | /* |
430 | * It is now in the rbtree, get a ref | |
431 | */ | |
432 | thread__get(th); | |
0ceb8f6e | 433 | machine->last_match = th; |
d2c11034 | 434 | ++machine->nr_threads; |
9d2f8e22 ACM |
435 | } |
436 | ||
437 | return th; | |
438 | } | |
439 | ||
b91fc39f ACM |
440 | struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid) |
441 | { | |
442 | return ____machine__findnew_thread(machine, pid, tid, true); | |
443 | } | |
444 | ||
314add6b AH |
445 | struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, |
446 | pid_t tid) | |
9d2f8e22 | 447 | { |
b91fc39f ACM |
448 | struct thread *th; |
449 | ||
450 | pthread_rwlock_wrlock(&machine->threads_lock); | |
abd82868 | 451 | th = __machine__findnew_thread(machine, pid, tid); |
b91fc39f ACM |
452 | pthread_rwlock_unlock(&machine->threads_lock); |
453 | return th; | |
9d2f8e22 ACM |
454 | } |
455 | ||
d75e6097 JO |
456 | struct thread *machine__find_thread(struct machine *machine, pid_t pid, |
457 | pid_t tid) | |
9d2f8e22 | 458 | { |
b91fc39f ACM |
459 | struct thread *th; |
460 | pthread_rwlock_rdlock(&machine->threads_lock); | |
abd82868 | 461 | th = ____machine__findnew_thread(machine, pid, tid, false); |
b91fc39f ACM |
462 | pthread_rwlock_unlock(&machine->threads_lock); |
463 | return th; | |
9d2f8e22 | 464 | } |
b0a7d1a0 | 465 | |
cfe1c414 AH |
466 | struct comm *machine__thread_exec_comm(struct machine *machine, |
467 | struct thread *thread) | |
468 | { | |
469 | if (machine->comm_exec) | |
470 | return thread__exec_comm(thread); | |
471 | else | |
472 | return thread__comm(thread); | |
473 | } | |
474 | ||
162f0bef FW |
475 | int machine__process_comm_event(struct machine *machine, union perf_event *event, |
476 | struct perf_sample *sample) | |
b0a7d1a0 | 477 | { |
314add6b AH |
478 | struct thread *thread = machine__findnew_thread(machine, |
479 | event->comm.pid, | |
480 | event->comm.tid); | |
65de51f9 | 481 | bool exec = event->header.misc & PERF_RECORD_MISC_COMM_EXEC; |
b91fc39f | 482 | int err = 0; |
b0a7d1a0 | 483 | |
cfe1c414 AH |
484 | if (exec) |
485 | machine->comm_exec = true; | |
486 | ||
b0a7d1a0 ACM |
487 | if (dump_trace) |
488 | perf_event__fprintf_comm(event, stdout); | |
489 | ||
65de51f9 AH |
490 | if (thread == NULL || |
491 | __thread__set_comm(thread, event->comm.comm, sample->time, exec)) { | |
b0a7d1a0 | 492 | dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); |
b91fc39f | 493 | err = -1; |
b0a7d1a0 ACM |
494 | } |
495 | ||
b91fc39f ACM |
496 | thread__put(thread); |
497 | ||
498 | return err; | |
b0a7d1a0 ACM |
499 | } |
500 | ||
501 | int machine__process_lost_event(struct machine *machine __maybe_unused, | |
162f0bef | 502 | union perf_event *event, struct perf_sample *sample __maybe_unused) |
b0a7d1a0 ACM |
503 | { |
504 | dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n", | |
505 | event->lost.id, event->lost.lost); | |
506 | return 0; | |
507 | } | |
508 | ||
c4937a91 KL |
509 | int machine__process_lost_samples_event(struct machine *machine __maybe_unused, |
510 | union perf_event *event, struct perf_sample *sample) | |
511 | { | |
512 | dump_printf(": id:%" PRIu64 ": lost samples :%" PRIu64 "\n", | |
513 | sample->id, event->lost_samples.lost); | |
514 | return 0; | |
515 | } | |
516 | ||
9f2de315 ACM |
517 | static struct dso *machine__findnew_module_dso(struct machine *machine, |
518 | struct kmod_path *m, | |
519 | const char *filename) | |
da17ea33 JO |
520 | { |
521 | struct dso *dso; | |
da17ea33 | 522 | |
e8807844 ACM |
523 | pthread_rwlock_wrlock(&machine->dsos.lock); |
524 | ||
525 | dso = __dsos__find(&machine->dsos, m->name, true); | |
da17ea33 | 526 | if (!dso) { |
e8807844 | 527 | dso = __dsos__addnew(&machine->dsos, m->name); |
da17ea33 | 528 | if (dso == NULL) |
e8807844 | 529 | goto out_unlock; |
da17ea33 JO |
530 | |
531 | if (machine__is_host(machine)) | |
532 | dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE; | |
533 | else | |
534 | dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE; | |
535 | ||
536 | /* _KMODULE_COMP should be next to _KMODULE */ | |
ca33380a | 537 | if (m->kmod && m->comp) |
da17ea33 | 538 | dso->symtab_type++; |
ca33380a JO |
539 | |
540 | dso__set_short_name(dso, strdup(m->name), true); | |
541 | dso__set_long_name(dso, strdup(filename), true); | |
da17ea33 JO |
542 | } |
543 | ||
d3a7c489 | 544 | dso__get(dso); |
e8807844 ACM |
545 | out_unlock: |
546 | pthread_rwlock_unlock(&machine->dsos.lock); | |
da17ea33 JO |
547 | return dso; |
548 | } | |
549 | ||
4a96f7a0 AH |
550 | int machine__process_aux_event(struct machine *machine __maybe_unused, |
551 | union perf_event *event) | |
552 | { | |
553 | if (dump_trace) | |
554 | perf_event__fprintf_aux(event, stdout); | |
555 | return 0; | |
556 | } | |
557 | ||
0ad21f68 AH |
558 | int machine__process_itrace_start_event(struct machine *machine __maybe_unused, |
559 | union perf_event *event) | |
560 | { | |
561 | if (dump_trace) | |
562 | perf_event__fprintf_itrace_start(event, stdout); | |
563 | return 0; | |
564 | } | |
565 | ||
0286039f AH |
566 | int machine__process_switch_event(struct machine *machine __maybe_unused, |
567 | union perf_event *event) | |
568 | { | |
569 | if (dump_trace) | |
570 | perf_event__fprintf_switch(event, stdout); | |
571 | return 0; | |
572 | } | |
573 | ||
c03d5184 WN |
574 | static void dso__adjust_kmod_long_name(struct dso *dso, const char *filename) |
575 | { | |
576 | const char *dup_filename; | |
577 | ||
578 | if (!filename || !dso || !dso->long_name) | |
579 | return; | |
580 | if (dso->long_name[0] != '[') | |
581 | return; | |
582 | if (!strchr(filename, '/')) | |
583 | return; | |
584 | ||
585 | dup_filename = strdup(filename); | |
586 | if (!dup_filename) | |
587 | return; | |
588 | ||
5dcf16df | 589 | dso__set_long_name(dso, dup_filename, true); |
c03d5184 WN |
590 | } |
591 | ||
9f2de315 ACM |
592 | struct map *machine__findnew_module_map(struct machine *machine, u64 start, |
593 | const char *filename) | |
3f067dca | 594 | { |
ca33380a | 595 | struct map *map = NULL; |
566c69c3 | 596 | struct dso *dso = NULL; |
ca33380a | 597 | struct kmod_path m; |
3f067dca | 598 | |
ca33380a | 599 | if (kmod_path__parse_name(&m, filename)) |
3f067dca ACM |
600 | return NULL; |
601 | ||
bc84f464 JO |
602 | map = map_groups__find_by_name(&machine->kmaps, MAP__FUNCTION, |
603 | m.name); | |
c03d5184 WN |
604 | if (map) { |
605 | /* | |
606 | * If the map's dso is an offline module, give dso__load() | |
607 | * a chance to find the file path of that module by fixing | |
608 | * long_name. | |
609 | */ | |
610 | dso__adjust_kmod_long_name(map->dso, filename); | |
bc84f464 | 611 | goto out; |
c03d5184 | 612 | } |
bc84f464 | 613 | |
9f2de315 | 614 | dso = machine__findnew_module_dso(machine, &m, filename); |
ca33380a JO |
615 | if (dso == NULL) |
616 | goto out; | |
617 | ||
3f067dca ACM |
618 | map = map__new2(start, dso, MAP__FUNCTION); |
619 | if (map == NULL) | |
ca33380a | 620 | goto out; |
3f067dca | 621 | |
3f067dca | 622 | map_groups__insert(&machine->kmaps, map); |
ca33380a | 623 | |
9afcb420 MH |
624 | /* Put the map here because map_groups__insert alread got it */ |
625 | map__put(map); | |
ca33380a | 626 | out: |
566c69c3 MH |
627 | /* put the dso here, corresponding to machine__findnew_module_dso */ |
628 | dso__put(dso); | |
ca33380a | 629 | free(m.name); |
3f067dca ACM |
630 | return map; |
631 | } | |
632 | ||
876650e6 | 633 | size_t machines__fprintf_dsos(struct machines *machines, FILE *fp) |
3f067dca ACM |
634 | { |
635 | struct rb_node *nd; | |
3d39ac53 | 636 | size_t ret = __dsos__fprintf(&machines->host.dsos.head, fp); |
3f067dca | 637 | |
876650e6 | 638 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { |
3f067dca | 639 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
3d39ac53 | 640 | ret += __dsos__fprintf(&pos->dsos.head, fp); |
3f067dca ACM |
641 | } |
642 | ||
643 | return ret; | |
644 | } | |
645 | ||
8fa7d87f | 646 | size_t machine__fprintf_dsos_buildid(struct machine *m, FILE *fp, |
3f067dca ACM |
647 | bool (skip)(struct dso *dso, int parm), int parm) |
648 | { | |
3d39ac53 | 649 | return __dsos__fprintf_buildid(&m->dsos.head, fp, skip, parm); |
3f067dca ACM |
650 | } |
651 | ||
876650e6 | 652 | size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, |
3f067dca ACM |
653 | bool (skip)(struct dso *dso, int parm), int parm) |
654 | { | |
655 | struct rb_node *nd; | |
876650e6 | 656 | size_t ret = machine__fprintf_dsos_buildid(&machines->host, fp, skip, parm); |
3f067dca | 657 | |
876650e6 | 658 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { |
3f067dca ACM |
659 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
660 | ret += machine__fprintf_dsos_buildid(pos, fp, skip, parm); | |
661 | } | |
662 | return ret; | |
663 | } | |
664 | ||
665 | size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp) | |
666 | { | |
667 | int i; | |
668 | size_t printed = 0; | |
a5e813c6 | 669 | struct dso *kdso = machine__kernel_map(machine)->dso; |
3f067dca ACM |
670 | |
671 | if (kdso->has_build_id) { | |
672 | char filename[PATH_MAX]; | |
673 | if (dso__build_id_filename(kdso, filename, sizeof(filename))) | |
674 | printed += fprintf(fp, "[0] %s\n", filename); | |
675 | } | |
676 | ||
677 | for (i = 0; i < vmlinux_path__nr_entries; ++i) | |
678 | printed += fprintf(fp, "[%d] %s\n", | |
679 | i + kdso->has_build_id, vmlinux_path[i]); | |
680 | ||
681 | return printed; | |
682 | } | |
683 | ||
684 | size_t machine__fprintf(struct machine *machine, FILE *fp) | |
685 | { | |
d2c11034 | 686 | size_t ret; |
3f067dca ACM |
687 | struct rb_node *nd; |
688 | ||
b91fc39f ACM |
689 | pthread_rwlock_rdlock(&machine->threads_lock); |
690 | ||
d2c11034 ACM |
691 | ret = fprintf(fp, "Threads: %u\n", machine->nr_threads); |
692 | ||
3f067dca ACM |
693 | for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) { |
694 | struct thread *pos = rb_entry(nd, struct thread, rb_node); | |
695 | ||
696 | ret += thread__fprintf(pos, fp); | |
697 | } | |
698 | ||
b91fc39f ACM |
699 | pthread_rwlock_unlock(&machine->threads_lock); |
700 | ||
3f067dca ACM |
701 | return ret; |
702 | } | |
703 | ||
704 | static struct dso *machine__get_kernel(struct machine *machine) | |
705 | { | |
706 | const char *vmlinux_name = NULL; | |
707 | struct dso *kernel; | |
708 | ||
709 | if (machine__is_host(machine)) { | |
710 | vmlinux_name = symbol_conf.vmlinux_name; | |
711 | if (!vmlinux_name) | |
0a77582f | 712 | vmlinux_name = DSO__NAME_KALLSYMS; |
3f067dca | 713 | |
459ce518 ACM |
714 | kernel = machine__findnew_kernel(machine, vmlinux_name, |
715 | "[kernel]", DSO_TYPE_KERNEL); | |
3f067dca ACM |
716 | } else { |
717 | char bf[PATH_MAX]; | |
718 | ||
719 | if (machine__is_default_guest(machine)) | |
720 | vmlinux_name = symbol_conf.default_guest_vmlinux_name; | |
721 | if (!vmlinux_name) | |
722 | vmlinux_name = machine__mmap_name(machine, bf, | |
723 | sizeof(bf)); | |
724 | ||
459ce518 ACM |
725 | kernel = machine__findnew_kernel(machine, vmlinux_name, |
726 | "[guest.kernel]", | |
727 | DSO_TYPE_GUEST_KERNEL); | |
3f067dca ACM |
728 | } |
729 | ||
730 | if (kernel != NULL && (!kernel->has_build_id)) | |
731 | dso__read_running_kernel_build_id(kernel, machine); | |
732 | ||
733 | return kernel; | |
734 | } | |
735 | ||
736 | struct process_args { | |
737 | u64 start; | |
738 | }; | |
739 | ||
15a0a870 AH |
740 | static void machine__get_kallsyms_filename(struct machine *machine, char *buf, |
741 | size_t bufsz) | |
742 | { | |
743 | if (machine__is_default_guest(machine)) | |
744 | scnprintf(buf, bufsz, "%s", symbol_conf.default_guest_kallsyms); | |
745 | else | |
746 | scnprintf(buf, bufsz, "%s/proc/kallsyms", machine->root_dir); | |
747 | } | |
748 | ||
a93f0e55 SQ |
749 | const char *ref_reloc_sym_names[] = {"_text", "_stext", NULL}; |
750 | ||
751 | /* Figure out the start address of kernel map from /proc/kallsyms. | |
752 | * Returns the name of the start symbol in *symbol_name. Pass in NULL as | |
753 | * symbol_name if it's not that important. | |
754 | */ | |
4b99375b AH |
755 | static u64 machine__get_running_kernel_start(struct machine *machine, |
756 | const char **symbol_name) | |
3f067dca | 757 | { |
15a0a870 | 758 | char filename[PATH_MAX]; |
a93f0e55 SQ |
759 | int i; |
760 | const char *name; | |
761 | u64 addr = 0; | |
3f067dca | 762 | |
15a0a870 | 763 | machine__get_kallsyms_filename(machine, filename, PATH_MAX); |
3f067dca ACM |
764 | |
765 | if (symbol__restricted_filename(filename, "/proc/kallsyms")) | |
766 | return 0; | |
767 | ||
a93f0e55 SQ |
768 | for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) { |
769 | addr = kallsyms__get_function_start(filename, name); | |
770 | if (addr) | |
771 | break; | |
772 | } | |
773 | ||
774 | if (symbol_name) | |
775 | *symbol_name = name; | |
3f067dca | 776 | |
a93f0e55 | 777 | return addr; |
3f067dca ACM |
778 | } |
779 | ||
780 | int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel) | |
781 | { | |
782 | enum map_type type; | |
4b99375b | 783 | u64 start = machine__get_running_kernel_start(machine, NULL); |
3f067dca | 784 | |
cc1121ab MH |
785 | /* In case of renewal the kernel map, destroy previous one */ |
786 | machine__destroy_kernel_maps(machine); | |
787 | ||
3f067dca ACM |
788 | for (type = 0; type < MAP__NR_TYPES; ++type) { |
789 | struct kmap *kmap; | |
77e65977 | 790 | struct map *map; |
3f067dca ACM |
791 | |
792 | machine->vmlinux_maps[type] = map__new2(start, kernel, type); | |
793 | if (machine->vmlinux_maps[type] == NULL) | |
794 | return -1; | |
795 | ||
796 | machine->vmlinux_maps[type]->map_ip = | |
797 | machine->vmlinux_maps[type]->unmap_ip = | |
798 | identity__map_ip; | |
a5e813c6 | 799 | map = __machine__kernel_map(machine, type); |
77e65977 | 800 | kmap = map__kmap(map); |
ba92732e WN |
801 | if (!kmap) |
802 | return -1; | |
803 | ||
3f067dca | 804 | kmap->kmaps = &machine->kmaps; |
77e65977 | 805 | map_groups__insert(&machine->kmaps, map); |
3f067dca ACM |
806 | } |
807 | ||
808 | return 0; | |
809 | } | |
810 | ||
811 | void machine__destroy_kernel_maps(struct machine *machine) | |
812 | { | |
813 | enum map_type type; | |
814 | ||
815 | for (type = 0; type < MAP__NR_TYPES; ++type) { | |
816 | struct kmap *kmap; | |
a5e813c6 | 817 | struct map *map = __machine__kernel_map(machine, type); |
3f067dca | 818 | |
77e65977 | 819 | if (map == NULL) |
3f067dca ACM |
820 | continue; |
821 | ||
77e65977 ACM |
822 | kmap = map__kmap(map); |
823 | map_groups__remove(&machine->kmaps, map); | |
ba92732e | 824 | if (kmap && kmap->ref_reloc_sym) { |
3f067dca ACM |
825 | /* |
826 | * ref_reloc_sym is shared among all maps, so free just | |
827 | * on one of them. | |
828 | */ | |
829 | if (type == MAP__FUNCTION) { | |
04662523 ACM |
830 | zfree((char **)&kmap->ref_reloc_sym->name); |
831 | zfree(&kmap->ref_reloc_sym); | |
832 | } else | |
833 | kmap->ref_reloc_sym = NULL; | |
3f067dca ACM |
834 | } |
835 | ||
e96e4078 | 836 | map__put(machine->vmlinux_maps[type]); |
3f067dca ACM |
837 | machine->vmlinux_maps[type] = NULL; |
838 | } | |
839 | } | |
840 | ||
876650e6 | 841 | int machines__create_guest_kernel_maps(struct machines *machines) |
3f067dca ACM |
842 | { |
843 | int ret = 0; | |
844 | struct dirent **namelist = NULL; | |
845 | int i, items = 0; | |
846 | char path[PATH_MAX]; | |
847 | pid_t pid; | |
848 | char *endp; | |
849 | ||
850 | if (symbol_conf.default_guest_vmlinux_name || | |
851 | symbol_conf.default_guest_modules || | |
852 | symbol_conf.default_guest_kallsyms) { | |
853 | machines__create_kernel_maps(machines, DEFAULT_GUEST_KERNEL_ID); | |
854 | } | |
855 | ||
856 | if (symbol_conf.guestmount) { | |
857 | items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL); | |
858 | if (items <= 0) | |
859 | return -ENOENT; | |
860 | for (i = 0; i < items; i++) { | |
861 | if (!isdigit(namelist[i]->d_name[0])) { | |
862 | /* Filter out . and .. */ | |
863 | continue; | |
864 | } | |
865 | pid = (pid_t)strtol(namelist[i]->d_name, &endp, 10); | |
866 | if ((*endp != '\0') || | |
867 | (endp == namelist[i]->d_name) || | |
868 | (errno == ERANGE)) { | |
869 | pr_debug("invalid directory (%s). Skipping.\n", | |
870 | namelist[i]->d_name); | |
871 | continue; | |
872 | } | |
873 | sprintf(path, "%s/%s/proc/kallsyms", | |
874 | symbol_conf.guestmount, | |
875 | namelist[i]->d_name); | |
876 | ret = access(path, R_OK); | |
877 | if (ret) { | |
878 | pr_debug("Can't access file %s\n", path); | |
879 | goto failure; | |
880 | } | |
881 | machines__create_kernel_maps(machines, pid); | |
882 | } | |
883 | failure: | |
884 | free(namelist); | |
885 | } | |
886 | ||
887 | return ret; | |
888 | } | |
889 | ||
876650e6 | 890 | void machines__destroy_kernel_maps(struct machines *machines) |
3f067dca | 891 | { |
876650e6 ACM |
892 | struct rb_node *next = rb_first(&machines->guests); |
893 | ||
894 | machine__destroy_kernel_maps(&machines->host); | |
3f067dca ACM |
895 | |
896 | while (next) { | |
897 | struct machine *pos = rb_entry(next, struct machine, rb_node); | |
898 | ||
899 | next = rb_next(&pos->rb_node); | |
876650e6 | 900 | rb_erase(&pos->rb_node, &machines->guests); |
3f067dca ACM |
901 | machine__delete(pos); |
902 | } | |
903 | } | |
904 | ||
876650e6 | 905 | int machines__create_kernel_maps(struct machines *machines, pid_t pid) |
3f067dca ACM |
906 | { |
907 | struct machine *machine = machines__findnew(machines, pid); | |
908 | ||
909 | if (machine == NULL) | |
910 | return -1; | |
911 | ||
912 | return machine__create_kernel_maps(machine); | |
913 | } | |
914 | ||
e02092b9 ACM |
915 | int __machine__load_kallsyms(struct machine *machine, const char *filename, |
916 | enum map_type type, bool no_kcore, symbol_filter_t filter) | |
3f067dca | 917 | { |
a5e813c6 | 918 | struct map *map = machine__kernel_map(machine); |
e02092b9 | 919 | int ret = __dso__load_kallsyms(map->dso, filename, map, no_kcore, filter); |
3f067dca ACM |
920 | |
921 | if (ret > 0) { | |
922 | dso__set_loaded(map->dso, type); | |
923 | /* | |
924 | * Since /proc/kallsyms will have multiple sessions for the | |
925 | * kernel, with modules between them, fixup the end of all | |
926 | * sections. | |
927 | */ | |
928 | __map_groups__fixup_end(&machine->kmaps, type); | |
929 | } | |
930 | ||
931 | return ret; | |
932 | } | |
933 | ||
e02092b9 ACM |
934 | int machine__load_kallsyms(struct machine *machine, const char *filename, |
935 | enum map_type type, symbol_filter_t filter) | |
936 | { | |
937 | return __machine__load_kallsyms(machine, filename, type, false, filter); | |
938 | } | |
939 | ||
3f067dca ACM |
940 | int machine__load_vmlinux_path(struct machine *machine, enum map_type type, |
941 | symbol_filter_t filter) | |
942 | { | |
a5e813c6 | 943 | struct map *map = machine__kernel_map(machine); |
3f067dca ACM |
944 | int ret = dso__load_vmlinux_path(map->dso, map, filter); |
945 | ||
39b12f78 | 946 | if (ret > 0) |
3f067dca | 947 | dso__set_loaded(map->dso, type); |
3f067dca ACM |
948 | |
949 | return ret; | |
950 | } | |
951 | ||
952 | static void map_groups__fixup_end(struct map_groups *mg) | |
953 | { | |
954 | int i; | |
955 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
956 | __map_groups__fixup_end(mg, i); | |
957 | } | |
958 | ||
959 | static char *get_kernel_version(const char *root_dir) | |
960 | { | |
961 | char version[PATH_MAX]; | |
962 | FILE *file; | |
963 | char *name, *tmp; | |
964 | const char *prefix = "Linux version "; | |
965 | ||
966 | sprintf(version, "%s/proc/version", root_dir); | |
967 | file = fopen(version, "r"); | |
968 | if (!file) | |
969 | return NULL; | |
970 | ||
971 | version[0] = '\0'; | |
972 | tmp = fgets(version, sizeof(version), file); | |
973 | fclose(file); | |
974 | ||
975 | name = strstr(version, prefix); | |
976 | if (!name) | |
977 | return NULL; | |
978 | name += strlen(prefix); | |
979 | tmp = strchr(name, ' '); | |
980 | if (tmp) | |
981 | *tmp = '\0'; | |
982 | ||
983 | return strdup(name); | |
984 | } | |
985 | ||
bb58a8a4 JO |
986 | static bool is_kmod_dso(struct dso *dso) |
987 | { | |
988 | return dso->symtab_type == DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE || | |
989 | dso->symtab_type == DSO_BINARY_TYPE__GUEST_KMODULE; | |
990 | } | |
991 | ||
992 | static int map_groups__set_module_path(struct map_groups *mg, const char *path, | |
993 | struct kmod_path *m) | |
994 | { | |
995 | struct map *map; | |
996 | char *long_name; | |
997 | ||
998 | map = map_groups__find_by_name(mg, MAP__FUNCTION, m->name); | |
999 | if (map == NULL) | |
1000 | return 0; | |
1001 | ||
1002 | long_name = strdup(path); | |
1003 | if (long_name == NULL) | |
1004 | return -ENOMEM; | |
1005 | ||
1006 | dso__set_long_name(map->dso, long_name, true); | |
1007 | dso__kernel_module_get_build_id(map->dso, ""); | |
1008 | ||
1009 | /* | |
1010 | * Full name could reveal us kmod compression, so | |
1011 | * we need to update the symtab_type if needed. | |
1012 | */ | |
1013 | if (m->comp && is_kmod_dso(map->dso)) | |
1014 | map->dso->symtab_type++; | |
1015 | ||
1016 | return 0; | |
1017 | } | |
1018 | ||
3f067dca | 1019 | static int map_groups__set_modules_path_dir(struct map_groups *mg, |
61d4290c | 1020 | const char *dir_name, int depth) |
3f067dca ACM |
1021 | { |
1022 | struct dirent *dent; | |
1023 | DIR *dir = opendir(dir_name); | |
1024 | int ret = 0; | |
1025 | ||
1026 | if (!dir) { | |
1027 | pr_debug("%s: cannot open %s dir\n", __func__, dir_name); | |
1028 | return -1; | |
1029 | } | |
1030 | ||
1031 | while ((dent = readdir(dir)) != NULL) { | |
1032 | char path[PATH_MAX]; | |
1033 | struct stat st; | |
1034 | ||
1035 | /*sshfs might return bad dent->d_type, so we have to stat*/ | |
1036 | snprintf(path, sizeof(path), "%s/%s", dir_name, dent->d_name); | |
1037 | if (stat(path, &st)) | |
1038 | continue; | |
1039 | ||
1040 | if (S_ISDIR(st.st_mode)) { | |
1041 | if (!strcmp(dent->d_name, ".") || | |
1042 | !strcmp(dent->d_name, "..")) | |
1043 | continue; | |
1044 | ||
61d4290c RY |
1045 | /* Do not follow top-level source and build symlinks */ |
1046 | if (depth == 0) { | |
1047 | if (!strcmp(dent->d_name, "source") || | |
1048 | !strcmp(dent->d_name, "build")) | |
1049 | continue; | |
1050 | } | |
1051 | ||
1052 | ret = map_groups__set_modules_path_dir(mg, path, | |
1053 | depth + 1); | |
3f067dca ACM |
1054 | if (ret < 0) |
1055 | goto out; | |
1056 | } else { | |
bb58a8a4 | 1057 | struct kmod_path m; |
3f067dca | 1058 | |
bb58a8a4 JO |
1059 | ret = kmod_path__parse_name(&m, dent->d_name); |
1060 | if (ret) | |
1061 | goto out; | |
c00c48fc | 1062 | |
bb58a8a4 JO |
1063 | if (m.kmod) |
1064 | ret = map_groups__set_module_path(mg, path, &m); | |
c00c48fc | 1065 | |
bb58a8a4 | 1066 | free(m.name); |
3f067dca | 1067 | |
bb58a8a4 | 1068 | if (ret) |
3f067dca | 1069 | goto out; |
3f067dca ACM |
1070 | } |
1071 | } | |
1072 | ||
1073 | out: | |
1074 | closedir(dir); | |
1075 | return ret; | |
1076 | } | |
1077 | ||
1078 | static int machine__set_modules_path(struct machine *machine) | |
1079 | { | |
1080 | char *version; | |
1081 | char modules_path[PATH_MAX]; | |
1082 | ||
1083 | version = get_kernel_version(machine->root_dir); | |
1084 | if (!version) | |
1085 | return -1; | |
1086 | ||
61d4290c | 1087 | snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s", |
3f067dca ACM |
1088 | machine->root_dir, version); |
1089 | free(version); | |
1090 | ||
61d4290c | 1091 | return map_groups__set_modules_path_dir(&machine->kmaps, modules_path, 0); |
3f067dca ACM |
1092 | } |
1093 | ||
316d70d6 | 1094 | static int machine__create_module(void *arg, const char *name, u64 start) |
3f067dca | 1095 | { |
316d70d6 | 1096 | struct machine *machine = arg; |
3f067dca | 1097 | struct map *map; |
316d70d6 | 1098 | |
9f2de315 | 1099 | map = machine__findnew_module_map(machine, start, name); |
316d70d6 AH |
1100 | if (map == NULL) |
1101 | return -1; | |
1102 | ||
1103 | dso__kernel_module_get_build_id(map->dso, machine->root_dir); | |
1104 | ||
1105 | return 0; | |
1106 | } | |
1107 | ||
1108 | static int machine__create_modules(struct machine *machine) | |
1109 | { | |
3f067dca ACM |
1110 | const char *modules; |
1111 | char path[PATH_MAX]; | |
1112 | ||
f4be904d | 1113 | if (machine__is_default_guest(machine)) { |
3f067dca | 1114 | modules = symbol_conf.default_guest_modules; |
f4be904d AH |
1115 | } else { |
1116 | snprintf(path, PATH_MAX, "%s/proc/modules", machine->root_dir); | |
3f067dca ACM |
1117 | modules = path; |
1118 | } | |
1119 | ||
aa7fe3b0 | 1120 | if (symbol__restricted_filename(modules, "/proc/modules")) |
3f067dca ACM |
1121 | return -1; |
1122 | ||
316d70d6 | 1123 | if (modules__parse(modules, machine, machine__create_module)) |
3f067dca ACM |
1124 | return -1; |
1125 | ||
316d70d6 AH |
1126 | if (!machine__set_modules_path(machine)) |
1127 | return 0; | |
3f067dca | 1128 | |
316d70d6 | 1129 | pr_debug("Problems setting modules path maps, continuing anyway...\n"); |
3f067dca | 1130 | |
8f76fcd9 | 1131 | return 0; |
3f067dca ACM |
1132 | } |
1133 | ||
1134 | int machine__create_kernel_maps(struct machine *machine) | |
1135 | { | |
1136 | struct dso *kernel = machine__get_kernel(machine); | |
5512cf24 | 1137 | const char *name; |
4b99375b | 1138 | u64 addr = machine__get_running_kernel_start(machine, &name); |
1154c957 MH |
1139 | int ret; |
1140 | ||
1141 | if (!addr || kernel == NULL) | |
5512cf24 | 1142 | return -1; |
3f067dca | 1143 | |
1154c957 MH |
1144 | ret = __machine__create_kernel_maps(machine, kernel); |
1145 | dso__put(kernel); | |
1146 | if (ret < 0) | |
3f067dca ACM |
1147 | return -1; |
1148 | ||
1149 | if (symbol_conf.use_modules && machine__create_modules(machine) < 0) { | |
1150 | if (machine__is_host(machine)) | |
1151 | pr_debug("Problems creating module maps, " | |
1152 | "continuing anyway...\n"); | |
1153 | else | |
1154 | pr_debug("Problems creating module maps for guest %d, " | |
1155 | "continuing anyway...\n", machine->pid); | |
1156 | } | |
1157 | ||
1158 | /* | |
1159 | * Now that we have all the maps created, just set the ->end of them: | |
1160 | */ | |
1161 | map_groups__fixup_end(&machine->kmaps); | |
5512cf24 AH |
1162 | |
1163 | if (maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, name, | |
1164 | addr)) { | |
1165 | machine__destroy_kernel_maps(machine); | |
1166 | return -1; | |
1167 | } | |
1168 | ||
3f067dca ACM |
1169 | return 0; |
1170 | } | |
1171 | ||
b0a7d1a0 ACM |
1172 | static void machine__set_kernel_mmap_len(struct machine *machine, |
1173 | union perf_event *event) | |
1174 | { | |
4552cf0f NK |
1175 | int i; |
1176 | ||
1177 | for (i = 0; i < MAP__NR_TYPES; i++) { | |
1178 | machine->vmlinux_maps[i]->start = event->mmap.start; | |
1179 | machine->vmlinux_maps[i]->end = (event->mmap.start + | |
1180 | event->mmap.len); | |
1181 | /* | |
1182 | * Be a bit paranoid here, some perf.data file came with | |
1183 | * a zero sized synthesized MMAP event for the kernel. | |
1184 | */ | |
1185 | if (machine->vmlinux_maps[i]->end == 0) | |
1186 | machine->vmlinux_maps[i]->end = ~0ULL; | |
1187 | } | |
b0a7d1a0 ACM |
1188 | } |
1189 | ||
8e0cf965 AH |
1190 | static bool machine__uses_kcore(struct machine *machine) |
1191 | { | |
1192 | struct dso *dso; | |
1193 | ||
3d39ac53 | 1194 | list_for_each_entry(dso, &machine->dsos.head, node) { |
8e0cf965 AH |
1195 | if (dso__is_kcore(dso)) |
1196 | return true; | |
1197 | } | |
1198 | ||
1199 | return false; | |
1200 | } | |
1201 | ||
b0a7d1a0 ACM |
1202 | static int machine__process_kernel_mmap_event(struct machine *machine, |
1203 | union perf_event *event) | |
1204 | { | |
1205 | struct map *map; | |
1206 | char kmmap_prefix[PATH_MAX]; | |
1207 | enum dso_kernel_type kernel_type; | |
1208 | bool is_kernel_mmap; | |
1209 | ||
8e0cf965 AH |
1210 | /* If we have maps from kcore then we do not need or want any others */ |
1211 | if (machine__uses_kcore(machine)) | |
1212 | return 0; | |
1213 | ||
b0a7d1a0 ACM |
1214 | machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix)); |
1215 | if (machine__is_host(machine)) | |
1216 | kernel_type = DSO_TYPE_KERNEL; | |
1217 | else | |
1218 | kernel_type = DSO_TYPE_GUEST_KERNEL; | |
1219 | ||
1220 | is_kernel_mmap = memcmp(event->mmap.filename, | |
1221 | kmmap_prefix, | |
1222 | strlen(kmmap_prefix) - 1) == 0; | |
1223 | if (event->mmap.filename[0] == '/' || | |
1224 | (!is_kernel_mmap && event->mmap.filename[0] == '[')) { | |
9f2de315 ACM |
1225 | map = machine__findnew_module_map(machine, event->mmap.start, |
1226 | event->mmap.filename); | |
b0a7d1a0 ACM |
1227 | if (map == NULL) |
1228 | goto out_problem; | |
1229 | ||
b0a7d1a0 ACM |
1230 | map->end = map->start + event->mmap.len; |
1231 | } else if (is_kernel_mmap) { | |
1232 | const char *symbol_name = (event->mmap.filename + | |
1233 | strlen(kmmap_prefix)); | |
1234 | /* | |
1235 | * Should be there already, from the build-id table in | |
1236 | * the header. | |
1237 | */ | |
b837a8bd NK |
1238 | struct dso *kernel = NULL; |
1239 | struct dso *dso; | |
1240 | ||
e8807844 ACM |
1241 | pthread_rwlock_rdlock(&machine->dsos.lock); |
1242 | ||
3d39ac53 | 1243 | list_for_each_entry(dso, &machine->dsos.head, node) { |
1f121b03 WN |
1244 | |
1245 | /* | |
1246 | * The cpumode passed to is_kernel_module is not the | |
1247 | * cpumode of *this* event. If we insist on passing | |
1248 | * correct cpumode to is_kernel_module, we should | |
1249 | * record the cpumode when we adding this dso to the | |
1250 | * linked list. | |
1251 | * | |
1252 | * However we don't really need passing correct | |
1253 | * cpumode. We know the correct cpumode must be kernel | |
1254 | * mode (if not, we should not link it onto kernel_dsos | |
1255 | * list). | |
1256 | * | |
1257 | * Therefore, we pass PERF_RECORD_MISC_CPUMODE_UNKNOWN. | |
1258 | * is_kernel_module() treats it as a kernel cpumode. | |
1259 | */ | |
1260 | ||
1261 | if (!dso->kernel || | |
1262 | is_kernel_module(dso->long_name, | |
1263 | PERF_RECORD_MISC_CPUMODE_UNKNOWN)) | |
b837a8bd NK |
1264 | continue; |
1265 | ||
1f121b03 | 1266 | |
b837a8bd NK |
1267 | kernel = dso; |
1268 | break; | |
1269 | } | |
1270 | ||
e8807844 ACM |
1271 | pthread_rwlock_unlock(&machine->dsos.lock); |
1272 | ||
b837a8bd | 1273 | if (kernel == NULL) |
aa7cc2ae | 1274 | kernel = machine__findnew_dso(machine, kmmap_prefix); |
b0a7d1a0 ACM |
1275 | if (kernel == NULL) |
1276 | goto out_problem; | |
1277 | ||
1278 | kernel->kernel = kernel_type; | |
d3a7c489 ACM |
1279 | if (__machine__create_kernel_maps(machine, kernel) < 0) { |
1280 | dso__put(kernel); | |
b0a7d1a0 | 1281 | goto out_problem; |
d3a7c489 | 1282 | } |
b0a7d1a0 | 1283 | |
330dfa22 NK |
1284 | if (strstr(kernel->long_name, "vmlinux")) |
1285 | dso__set_short_name(kernel, "[kernel.vmlinux]", false); | |
96d78059 | 1286 | |
b0a7d1a0 ACM |
1287 | machine__set_kernel_mmap_len(machine, event); |
1288 | ||
1289 | /* | |
1290 | * Avoid using a zero address (kptr_restrict) for the ref reloc | |
1291 | * symbol. Effectively having zero here means that at record | |
1292 | * time /proc/sys/kernel/kptr_restrict was non zero. | |
1293 | */ | |
1294 | if (event->mmap.pgoff != 0) { | |
1295 | maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, | |
1296 | symbol_name, | |
1297 | event->mmap.pgoff); | |
1298 | } | |
1299 | ||
1300 | if (machine__is_default_guest(machine)) { | |
1301 | /* | |
1302 | * preload dso of guest kernel and modules | |
1303 | */ | |
a5e813c6 | 1304 | dso__load(kernel, machine__kernel_map(machine), NULL); |
b0a7d1a0 ACM |
1305 | } |
1306 | } | |
1307 | return 0; | |
1308 | out_problem: | |
1309 | return -1; | |
1310 | } | |
1311 | ||
5c5e854b | 1312 | int machine__process_mmap2_event(struct machine *machine, |
162f0bef | 1313 | union perf_event *event, |
473398a2 | 1314 | struct perf_sample *sample) |
5c5e854b | 1315 | { |
5c5e854b SE |
1316 | struct thread *thread; |
1317 | struct map *map; | |
1318 | enum map_type type; | |
1319 | int ret = 0; | |
1320 | ||
1321 | if (dump_trace) | |
1322 | perf_event__fprintf_mmap2(event, stdout); | |
1323 | ||
473398a2 ACM |
1324 | if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL || |
1325 | sample->cpumode == PERF_RECORD_MISC_KERNEL) { | |
5c5e854b SE |
1326 | ret = machine__process_kernel_mmap_event(machine, event); |
1327 | if (ret < 0) | |
1328 | goto out_problem; | |
1329 | return 0; | |
1330 | } | |
1331 | ||
1332 | thread = machine__findnew_thread(machine, event->mmap2.pid, | |
11c9abf2 | 1333 | event->mmap2.tid); |
5c5e854b SE |
1334 | if (thread == NULL) |
1335 | goto out_problem; | |
1336 | ||
1337 | if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) | |
1338 | type = MAP__VARIABLE; | |
1339 | else | |
1340 | type = MAP__FUNCTION; | |
1341 | ||
2a03068c | 1342 | map = map__new(machine, event->mmap2.start, |
5c5e854b SE |
1343 | event->mmap2.len, event->mmap2.pgoff, |
1344 | event->mmap2.pid, event->mmap2.maj, | |
1345 | event->mmap2.min, event->mmap2.ino, | |
1346 | event->mmap2.ino_generation, | |
7ef80703 DZ |
1347 | event->mmap2.prot, |
1348 | event->mmap2.flags, | |
5835edda | 1349 | event->mmap2.filename, type, thread); |
5c5e854b SE |
1350 | |
1351 | if (map == NULL) | |
b91fc39f | 1352 | goto out_problem_map; |
5c5e854b SE |
1353 | |
1354 | thread__insert_map(thread, map); | |
b91fc39f | 1355 | thread__put(thread); |
84c2cafa | 1356 | map__put(map); |
5c5e854b SE |
1357 | return 0; |
1358 | ||
b91fc39f ACM |
1359 | out_problem_map: |
1360 | thread__put(thread); | |
5c5e854b SE |
1361 | out_problem: |
1362 | dump_printf("problem processing PERF_RECORD_MMAP2, skipping event.\n"); | |
1363 | return 0; | |
1364 | } | |
1365 | ||
162f0bef | 1366 | int machine__process_mmap_event(struct machine *machine, union perf_event *event, |
473398a2 | 1367 | struct perf_sample *sample) |
b0a7d1a0 | 1368 | { |
b0a7d1a0 ACM |
1369 | struct thread *thread; |
1370 | struct map *map; | |
bad40917 | 1371 | enum map_type type; |
b0a7d1a0 ACM |
1372 | int ret = 0; |
1373 | ||
1374 | if (dump_trace) | |
1375 | perf_event__fprintf_mmap(event, stdout); | |
1376 | ||
473398a2 ACM |
1377 | if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL || |
1378 | sample->cpumode == PERF_RECORD_MISC_KERNEL) { | |
b0a7d1a0 ACM |
1379 | ret = machine__process_kernel_mmap_event(machine, event); |
1380 | if (ret < 0) | |
1381 | goto out_problem; | |
1382 | return 0; | |
1383 | } | |
1384 | ||
314add6b | 1385 | thread = machine__findnew_thread(machine, event->mmap.pid, |
11c9abf2 | 1386 | event->mmap.tid); |
b0a7d1a0 ACM |
1387 | if (thread == NULL) |
1388 | goto out_problem; | |
bad40917 SE |
1389 | |
1390 | if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) | |
1391 | type = MAP__VARIABLE; | |
1392 | else | |
1393 | type = MAP__FUNCTION; | |
1394 | ||
2a03068c | 1395 | map = map__new(machine, event->mmap.start, |
b0a7d1a0 | 1396 | event->mmap.len, event->mmap.pgoff, |
7ef80703 | 1397 | event->mmap.pid, 0, 0, 0, 0, 0, 0, |
5c5e854b | 1398 | event->mmap.filename, |
5835edda | 1399 | type, thread); |
bad40917 | 1400 | |
b0a7d1a0 | 1401 | if (map == NULL) |
b91fc39f | 1402 | goto out_problem_map; |
b0a7d1a0 ACM |
1403 | |
1404 | thread__insert_map(thread, map); | |
b91fc39f | 1405 | thread__put(thread); |
84c2cafa | 1406 | map__put(map); |
b0a7d1a0 ACM |
1407 | return 0; |
1408 | ||
b91fc39f ACM |
1409 | out_problem_map: |
1410 | thread__put(thread); | |
b0a7d1a0 ACM |
1411 | out_problem: |
1412 | dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); | |
1413 | return 0; | |
1414 | } | |
1415 | ||
b91fc39f | 1416 | static void __machine__remove_thread(struct machine *machine, struct thread *th, bool lock) |
236a3bbd | 1417 | { |
f3b623b8 | 1418 | if (machine->last_match == th) |
0ceb8f6e | 1419 | machine->last_match = NULL; |
f3b623b8 | 1420 | |
59a51c1d | 1421 | BUG_ON(atomic_read(&th->refcnt) == 0); |
b91fc39f ACM |
1422 | if (lock) |
1423 | pthread_rwlock_wrlock(&machine->threads_lock); | |
0170b14f | 1424 | rb_erase_init(&th->rb_node, &machine->threads); |
b91fc39f | 1425 | RB_CLEAR_NODE(&th->rb_node); |
d2c11034 | 1426 | --machine->nr_threads; |
236a3bbd | 1427 | /* |
f3b623b8 ACM |
1428 | * Move it first to the dead_threads list, then drop the reference, |
1429 | * if this is the last reference, then the thread__delete destructor | |
1430 | * will be called and we will remove it from the dead_threads list. | |
236a3bbd DA |
1431 | */ |
1432 | list_add_tail(&th->node, &machine->dead_threads); | |
b91fc39f ACM |
1433 | if (lock) |
1434 | pthread_rwlock_unlock(&machine->threads_lock); | |
f3b623b8 | 1435 | thread__put(th); |
236a3bbd DA |
1436 | } |
1437 | ||
b91fc39f ACM |
1438 | void machine__remove_thread(struct machine *machine, struct thread *th) |
1439 | { | |
1440 | return __machine__remove_thread(machine, th, true); | |
1441 | } | |
1442 | ||
162f0bef FW |
1443 | int machine__process_fork_event(struct machine *machine, union perf_event *event, |
1444 | struct perf_sample *sample) | |
b0a7d1a0 | 1445 | { |
d75e6097 JO |
1446 | struct thread *thread = machine__find_thread(machine, |
1447 | event->fork.pid, | |
1448 | event->fork.tid); | |
314add6b AH |
1449 | struct thread *parent = machine__findnew_thread(machine, |
1450 | event->fork.ppid, | |
1451 | event->fork.ptid); | |
b91fc39f | 1452 | int err = 0; |
b0a7d1a0 | 1453 | |
5cb73340 AH |
1454 | if (dump_trace) |
1455 | perf_event__fprintf_task(event, stdout); | |
1456 | ||
1457 | /* | |
1458 | * There may be an existing thread that is not actually the parent, | |
1459 | * either because we are processing events out of order, or because the | |
1460 | * (fork) event that would have removed the thread was lost. Assume the | |
1461 | * latter case and continue on as best we can. | |
1462 | */ | |
1463 | if (parent->pid_ != (pid_t)event->fork.ppid) { | |
1464 | dump_printf("removing erroneous parent thread %d/%d\n", | |
1465 | parent->pid_, parent->tid); | |
1466 | machine__remove_thread(machine, parent); | |
1467 | thread__put(parent); | |
1468 | parent = machine__findnew_thread(machine, event->fork.ppid, | |
1469 | event->fork.ptid); | |
1470 | } | |
1471 | ||
236a3bbd | 1472 | /* if a thread currently exists for the thread id remove it */ |
b91fc39f | 1473 | if (thread != NULL) { |
236a3bbd | 1474 | machine__remove_thread(machine, thread); |
b91fc39f ACM |
1475 | thread__put(thread); |
1476 | } | |
236a3bbd | 1477 | |
314add6b AH |
1478 | thread = machine__findnew_thread(machine, event->fork.pid, |
1479 | event->fork.tid); | |
b0a7d1a0 ACM |
1480 | |
1481 | if (thread == NULL || parent == NULL || | |
162f0bef | 1482 | thread__fork(thread, parent, sample->time) < 0) { |
b0a7d1a0 | 1483 | dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); |
b91fc39f | 1484 | err = -1; |
b0a7d1a0 | 1485 | } |
b91fc39f ACM |
1486 | thread__put(thread); |
1487 | thread__put(parent); | |
b0a7d1a0 | 1488 | |
b91fc39f | 1489 | return err; |
b0a7d1a0 ACM |
1490 | } |
1491 | ||
162f0bef FW |
1492 | int machine__process_exit_event(struct machine *machine, union perf_event *event, |
1493 | struct perf_sample *sample __maybe_unused) | |
b0a7d1a0 | 1494 | { |
d75e6097 JO |
1495 | struct thread *thread = machine__find_thread(machine, |
1496 | event->fork.pid, | |
1497 | event->fork.tid); | |
b0a7d1a0 ACM |
1498 | |
1499 | if (dump_trace) | |
1500 | perf_event__fprintf_task(event, stdout); | |
1501 | ||
b91fc39f | 1502 | if (thread != NULL) { |
236a3bbd | 1503 | thread__exited(thread); |
b91fc39f ACM |
1504 | thread__put(thread); |
1505 | } | |
b0a7d1a0 ACM |
1506 | |
1507 | return 0; | |
1508 | } | |
1509 | ||
162f0bef FW |
1510 | int machine__process_event(struct machine *machine, union perf_event *event, |
1511 | struct perf_sample *sample) | |
b0a7d1a0 ACM |
1512 | { |
1513 | int ret; | |
1514 | ||
1515 | switch (event->header.type) { | |
1516 | case PERF_RECORD_COMM: | |
162f0bef | 1517 | ret = machine__process_comm_event(machine, event, sample); break; |
b0a7d1a0 | 1518 | case PERF_RECORD_MMAP: |
162f0bef | 1519 | ret = machine__process_mmap_event(machine, event, sample); break; |
5c5e854b | 1520 | case PERF_RECORD_MMAP2: |
162f0bef | 1521 | ret = machine__process_mmap2_event(machine, event, sample); break; |
b0a7d1a0 | 1522 | case PERF_RECORD_FORK: |
162f0bef | 1523 | ret = machine__process_fork_event(machine, event, sample); break; |
b0a7d1a0 | 1524 | case PERF_RECORD_EXIT: |
162f0bef | 1525 | ret = machine__process_exit_event(machine, event, sample); break; |
b0a7d1a0 | 1526 | case PERF_RECORD_LOST: |
162f0bef | 1527 | ret = machine__process_lost_event(machine, event, sample); break; |
4a96f7a0 AH |
1528 | case PERF_RECORD_AUX: |
1529 | ret = machine__process_aux_event(machine, event); break; | |
0ad21f68 | 1530 | case PERF_RECORD_ITRACE_START: |
ceb92913 | 1531 | ret = machine__process_itrace_start_event(machine, event); break; |
c4937a91 KL |
1532 | case PERF_RECORD_LOST_SAMPLES: |
1533 | ret = machine__process_lost_samples_event(machine, event, sample); break; | |
0286039f AH |
1534 | case PERF_RECORD_SWITCH: |
1535 | case PERF_RECORD_SWITCH_CPU_WIDE: | |
1536 | ret = machine__process_switch_event(machine, event); break; | |
b0a7d1a0 ACM |
1537 | default: |
1538 | ret = -1; | |
1539 | break; | |
1540 | } | |
1541 | ||
1542 | return ret; | |
1543 | } | |
3f067dca | 1544 | |
b21484f1 | 1545 | static bool symbol__match_regex(struct symbol *sym, regex_t *regex) |
3f067dca | 1546 | { |
b21484f1 | 1547 | if (sym->name && !regexec(regex, sym->name, 0, NULL, 0)) |
3f067dca | 1548 | return 1; |
3f067dca ACM |
1549 | return 0; |
1550 | } | |
1551 | ||
bb871a9c | 1552 | static void ip__resolve_ams(struct thread *thread, |
3f067dca ACM |
1553 | struct addr_map_symbol *ams, |
1554 | u64 ip) | |
1555 | { | |
1556 | struct addr_location al; | |
3f067dca ACM |
1557 | |
1558 | memset(&al, 0, sizeof(al)); | |
52a3cb8c ACM |
1559 | /* |
1560 | * We cannot use the header.misc hint to determine whether a | |
1561 | * branch stack address is user, kernel, guest, hypervisor. | |
1562 | * Branches may straddle the kernel/user/hypervisor boundaries. | |
1563 | * Thus, we have to try consecutively until we find a match | |
1564 | * or else, the symbol is unknown | |
1565 | */ | |
bb871a9c | 1566 | thread__find_cpumode_addr_location(thread, MAP__FUNCTION, ip, &al); |
3f067dca | 1567 | |
3f067dca ACM |
1568 | ams->addr = ip; |
1569 | ams->al_addr = al.addr; | |
1570 | ams->sym = al.sym; | |
1571 | ams->map = al.map; | |
1572 | } | |
1573 | ||
bb871a9c | 1574 | static void ip__resolve_data(struct thread *thread, |
98a3b32c SE |
1575 | u8 m, struct addr_map_symbol *ams, u64 addr) |
1576 | { | |
1577 | struct addr_location al; | |
1578 | ||
1579 | memset(&al, 0, sizeof(al)); | |
1580 | ||
bb871a9c | 1581 | thread__find_addr_location(thread, m, MAP__VARIABLE, addr, &al); |
06b2afc0 DZ |
1582 | if (al.map == NULL) { |
1583 | /* | |
1584 | * some shared data regions have execute bit set which puts | |
1585 | * their mapping in the MAP__FUNCTION type array. | |
1586 | * Check there as a fallback option before dropping the sample. | |
1587 | */ | |
bb871a9c | 1588 | thread__find_addr_location(thread, m, MAP__FUNCTION, addr, &al); |
06b2afc0 DZ |
1589 | } |
1590 | ||
98a3b32c SE |
1591 | ams->addr = addr; |
1592 | ams->al_addr = al.addr; | |
1593 | ams->sym = al.sym; | |
1594 | ams->map = al.map; | |
1595 | } | |
1596 | ||
e80faac0 ACM |
1597 | struct mem_info *sample__resolve_mem(struct perf_sample *sample, |
1598 | struct addr_location *al) | |
98a3b32c SE |
1599 | { |
1600 | struct mem_info *mi = zalloc(sizeof(*mi)); | |
1601 | ||
1602 | if (!mi) | |
1603 | return NULL; | |
1604 | ||
bb871a9c ACM |
1605 | ip__resolve_ams(al->thread, &mi->iaddr, sample->ip); |
1606 | ip__resolve_data(al->thread, al->cpumode, &mi->daddr, sample->addr); | |
98a3b32c SE |
1607 | mi->data_src.val = sample->data_src; |
1608 | ||
1609 | return mi; | |
1610 | } | |
1611 | ||
37592b8a | 1612 | static int add_callchain_ip(struct thread *thread, |
91d7b2de | 1613 | struct callchain_cursor *cursor, |
37592b8a AK |
1614 | struct symbol **parent, |
1615 | struct addr_location *root_al, | |
73dbcd65 | 1616 | u8 *cpumode, |
37592b8a AK |
1617 | u64 ip) |
1618 | { | |
1619 | struct addr_location al; | |
1620 | ||
1621 | al.filtered = 0; | |
1622 | al.sym = NULL; | |
73dbcd65 | 1623 | if (!cpumode) { |
8b7bad58 AK |
1624 | thread__find_cpumode_addr_location(thread, MAP__FUNCTION, |
1625 | ip, &al); | |
73dbcd65 | 1626 | } else { |
2e77784b KL |
1627 | if (ip >= PERF_CONTEXT_MAX) { |
1628 | switch (ip) { | |
1629 | case PERF_CONTEXT_HV: | |
73dbcd65 | 1630 | *cpumode = PERF_RECORD_MISC_HYPERVISOR; |
2e77784b KL |
1631 | break; |
1632 | case PERF_CONTEXT_KERNEL: | |
73dbcd65 | 1633 | *cpumode = PERF_RECORD_MISC_KERNEL; |
2e77784b KL |
1634 | break; |
1635 | case PERF_CONTEXT_USER: | |
73dbcd65 | 1636 | *cpumode = PERF_RECORD_MISC_USER; |
2e77784b KL |
1637 | break; |
1638 | default: | |
1639 | pr_debug("invalid callchain context: " | |
1640 | "%"PRId64"\n", (s64) ip); | |
1641 | /* | |
1642 | * It seems the callchain is corrupted. | |
1643 | * Discard all. | |
1644 | */ | |
91d7b2de | 1645 | callchain_cursor_reset(cursor); |
2e77784b KL |
1646 | return 1; |
1647 | } | |
1648 | return 0; | |
1649 | } | |
73dbcd65 DH |
1650 | thread__find_addr_location(thread, *cpumode, MAP__FUNCTION, |
1651 | ip, &al); | |
2e77784b KL |
1652 | } |
1653 | ||
37592b8a | 1654 | if (al.sym != NULL) { |
de7e6a7c | 1655 | if (perf_hpp_list.parent && !*parent && |
37592b8a AK |
1656 | symbol__match_regex(al.sym, &parent_regex)) |
1657 | *parent = al.sym; | |
1658 | else if (have_ignore_callees && root_al && | |
1659 | symbol__match_regex(al.sym, &ignore_callees_regex)) { | |
1660 | /* Treat this symbol as the root, | |
1661 | forgetting its callees. */ | |
1662 | *root_al = al; | |
91d7b2de | 1663 | callchain_cursor_reset(cursor); |
37592b8a AK |
1664 | } |
1665 | } | |
1666 | ||
b49a8fe5 NK |
1667 | if (symbol_conf.hide_unresolved && al.sym == NULL) |
1668 | return 0; | |
91d7b2de | 1669 | return callchain_cursor_append(cursor, al.addr, al.map, al.sym); |
37592b8a AK |
1670 | } |
1671 | ||
644f2df2 ACM |
1672 | struct branch_info *sample__resolve_bstack(struct perf_sample *sample, |
1673 | struct addr_location *al) | |
3f067dca | 1674 | { |
3f067dca | 1675 | unsigned int i; |
644f2df2 ACM |
1676 | const struct branch_stack *bs = sample->branch_stack; |
1677 | struct branch_info *bi = calloc(bs->nr, sizeof(struct branch_info)); | |
3f067dca | 1678 | |
3f067dca ACM |
1679 | if (!bi) |
1680 | return NULL; | |
1681 | ||
1682 | for (i = 0; i < bs->nr; i++) { | |
bb871a9c ACM |
1683 | ip__resolve_ams(al->thread, &bi[i].to, bs->entries[i].to); |
1684 | ip__resolve_ams(al->thread, &bi[i].from, bs->entries[i].from); | |
3f067dca ACM |
1685 | bi[i].flags = bs->entries[i].flags; |
1686 | } | |
1687 | return bi; | |
1688 | } | |
1689 | ||
8b7bad58 AK |
1690 | #define CHASHSZ 127 |
1691 | #define CHASHBITS 7 | |
1692 | #define NO_ENTRY 0xff | |
1693 | ||
1694 | #define PERF_MAX_BRANCH_DEPTH 127 | |
1695 | ||
1696 | /* Remove loops. */ | |
1697 | static int remove_loops(struct branch_entry *l, int nr) | |
1698 | { | |
1699 | int i, j, off; | |
1700 | unsigned char chash[CHASHSZ]; | |
1701 | ||
1702 | memset(chash, NO_ENTRY, sizeof(chash)); | |
1703 | ||
1704 | BUG_ON(PERF_MAX_BRANCH_DEPTH > 255); | |
1705 | ||
1706 | for (i = 0; i < nr; i++) { | |
1707 | int h = hash_64(l[i].from, CHASHBITS) % CHASHSZ; | |
1708 | ||
1709 | /* no collision handling for now */ | |
1710 | if (chash[h] == NO_ENTRY) { | |
1711 | chash[h] = i; | |
1712 | } else if (l[chash[h]].from == l[i].from) { | |
1713 | bool is_loop = true; | |
1714 | /* check if it is a real loop */ | |
1715 | off = 0; | |
1716 | for (j = chash[h]; j < i && i + off < nr; j++, off++) | |
1717 | if (l[j].from != l[i + off].from) { | |
1718 | is_loop = false; | |
1719 | break; | |
1720 | } | |
1721 | if (is_loop) { | |
1722 | memmove(l + i, l + i + off, | |
1723 | (nr - (i + off)) * sizeof(*l)); | |
1724 | nr -= off; | |
1725 | } | |
1726 | } | |
1727 | } | |
1728 | return nr; | |
1729 | } | |
1730 | ||
384b6055 KL |
1731 | /* |
1732 | * Recolve LBR callstack chain sample | |
1733 | * Return: | |
1734 | * 1 on success get LBR callchain information | |
1735 | * 0 no available LBR callchain information, should try fp | |
1736 | * negative error code on other errors. | |
1737 | */ | |
1738 | static int resolve_lbr_callchain_sample(struct thread *thread, | |
91d7b2de | 1739 | struct callchain_cursor *cursor, |
384b6055 KL |
1740 | struct perf_sample *sample, |
1741 | struct symbol **parent, | |
1742 | struct addr_location *root_al, | |
1743 | int max_stack) | |
3f067dca | 1744 | { |
384b6055 KL |
1745 | struct ip_callchain *chain = sample->callchain; |
1746 | int chain_nr = min(max_stack, (int)chain->nr); | |
73dbcd65 | 1747 | u8 cpumode = PERF_RECORD_MISC_USER; |
384b6055 KL |
1748 | int i, j, err; |
1749 | u64 ip; | |
1750 | ||
1751 | for (i = 0; i < chain_nr; i++) { | |
1752 | if (chain->ips[i] == PERF_CONTEXT_USER) | |
1753 | break; | |
1754 | } | |
1755 | ||
1756 | /* LBR only affects the user callchain */ | |
1757 | if (i != chain_nr) { | |
1758 | struct branch_stack *lbr_stack = sample->branch_stack; | |
1759 | int lbr_nr = lbr_stack->nr; | |
1760 | /* | |
1761 | * LBR callstack can only get user call chain. | |
1762 | * The mix_chain_nr is kernel call chain | |
1763 | * number plus LBR user call chain number. | |
1764 | * i is kernel call chain number, | |
1765 | * 1 is PERF_CONTEXT_USER, | |
1766 | * lbr_nr + 1 is the user call chain number. | |
1767 | * For details, please refer to the comments | |
1768 | * in callchain__printf | |
1769 | */ | |
1770 | int mix_chain_nr = i + 1 + lbr_nr + 1; | |
1771 | ||
4cb93446 | 1772 | if (mix_chain_nr > (int)sysctl_perf_event_max_stack + PERF_MAX_BRANCH_DEPTH) { |
384b6055 KL |
1773 | pr_warning("corrupted callchain. skipping...\n"); |
1774 | return 0; | |
1775 | } | |
1776 | ||
1777 | for (j = 0; j < mix_chain_nr; j++) { | |
1778 | if (callchain_param.order == ORDER_CALLEE) { | |
1779 | if (j < i + 1) | |
1780 | ip = chain->ips[j]; | |
1781 | else if (j > i + 1) | |
1782 | ip = lbr_stack->entries[j - i - 2].from; | |
1783 | else | |
1784 | ip = lbr_stack->entries[0].to; | |
1785 | } else { | |
1786 | if (j < lbr_nr) | |
1787 | ip = lbr_stack->entries[lbr_nr - j - 1].from; | |
1788 | else if (j > lbr_nr) | |
1789 | ip = chain->ips[i + 1 - (j - lbr_nr)]; | |
1790 | else | |
1791 | ip = lbr_stack->entries[0].to; | |
1792 | } | |
1793 | ||
91d7b2de | 1794 | err = add_callchain_ip(thread, cursor, parent, root_al, &cpumode, ip); |
384b6055 KL |
1795 | if (err) |
1796 | return (err < 0) ? err : 0; | |
1797 | } | |
1798 | return 1; | |
1799 | } | |
1800 | ||
1801 | return 0; | |
1802 | } | |
1803 | ||
1804 | static int thread__resolve_callchain_sample(struct thread *thread, | |
91d7b2de | 1805 | struct callchain_cursor *cursor, |
384b6055 KL |
1806 | struct perf_evsel *evsel, |
1807 | struct perf_sample *sample, | |
1808 | struct symbol **parent, | |
1809 | struct addr_location *root_al, | |
1810 | int max_stack) | |
1811 | { | |
1812 | struct branch_stack *branch = sample->branch_stack; | |
1813 | struct ip_callchain *chain = sample->callchain; | |
a29d5c9b | 1814 | int chain_nr = chain->nr; |
73dbcd65 | 1815 | u8 cpumode = PERF_RECORD_MISC_USER; |
a29d5c9b | 1816 | int i, j, err, nr_entries, nr_contexts; |
8b7bad58 AK |
1817 | int skip_idx = -1; |
1818 | int first_call = 0; | |
1819 | ||
acf2abbd | 1820 | if (perf_evsel__has_branch_callstack(evsel)) { |
91d7b2de | 1821 | err = resolve_lbr_callchain_sample(thread, cursor, sample, parent, |
384b6055 KL |
1822 | root_al, max_stack); |
1823 | if (err) | |
1824 | return (err < 0) ? err : 0; | |
1825 | } | |
1826 | ||
8b7bad58 AK |
1827 | /* |
1828 | * Based on DWARF debug information, some architectures skip | |
1829 | * a callchain entry saved by the kernel. | |
1830 | */ | |
a29d5c9b | 1831 | if (chain_nr < sysctl_perf_event_max_stack) |
8b7bad58 | 1832 | skip_idx = arch_skip_callchain_idx(thread, chain); |
3f067dca | 1833 | |
8b7bad58 AK |
1834 | /* |
1835 | * Add branches to call stack for easier browsing. This gives | |
1836 | * more context for a sample than just the callers. | |
1837 | * | |
1838 | * This uses individual histograms of paths compared to the | |
1839 | * aggregated histograms the normal LBR mode uses. | |
1840 | * | |
1841 | * Limitations for now: | |
1842 | * - No extra filters | |
1843 | * - No annotations (should annotate somehow) | |
1844 | */ | |
1845 | ||
1846 | if (branch && callchain_param.branch_callstack) { | |
1847 | int nr = min(max_stack, (int)branch->nr); | |
1848 | struct branch_entry be[nr]; | |
1849 | ||
1850 | if (branch->nr > PERF_MAX_BRANCH_DEPTH) { | |
1851 | pr_warning("corrupted branch chain. skipping...\n"); | |
1852 | goto check_calls; | |
1853 | } | |
1854 | ||
1855 | for (i = 0; i < nr; i++) { | |
1856 | if (callchain_param.order == ORDER_CALLEE) { | |
1857 | be[i] = branch->entries[i]; | |
1858 | /* | |
1859 | * Check for overlap into the callchain. | |
1860 | * The return address is one off compared to | |
1861 | * the branch entry. To adjust for this | |
1862 | * assume the calling instruction is not longer | |
1863 | * than 8 bytes. | |
1864 | */ | |
1865 | if (i == skip_idx || | |
1866 | chain->ips[first_call] >= PERF_CONTEXT_MAX) | |
1867 | first_call++; | |
1868 | else if (be[i].from < chain->ips[first_call] && | |
1869 | be[i].from >= chain->ips[first_call] - 8) | |
1870 | first_call++; | |
1871 | } else | |
1872 | be[i] = branch->entries[branch->nr - i - 1]; | |
1873 | } | |
1874 | ||
1875 | nr = remove_loops(be, nr); | |
1876 | ||
1877 | for (i = 0; i < nr; i++) { | |
91d7b2de | 1878 | err = add_callchain_ip(thread, cursor, parent, root_al, |
73dbcd65 | 1879 | NULL, be[i].to); |
8b7bad58 | 1880 | if (!err) |
91d7b2de | 1881 | err = add_callchain_ip(thread, cursor, parent, root_al, |
73dbcd65 | 1882 | NULL, be[i].from); |
8b7bad58 AK |
1883 | if (err == -EINVAL) |
1884 | break; | |
1885 | if (err) | |
1886 | return err; | |
1887 | } | |
1888 | chain_nr -= nr; | |
1889 | } | |
1890 | ||
1891 | check_calls: | |
a29d5c9b ACM |
1892 | for (i = first_call, nr_entries = 0, nr_contexts = 0; |
1893 | i < chain_nr && nr_entries < max_stack; i++) { | |
3f067dca | 1894 | u64 ip; |
3f067dca ACM |
1895 | |
1896 | if (callchain_param.order == ORDER_CALLEE) | |
a60335ba | 1897 | j = i; |
3f067dca | 1898 | else |
a60335ba SB |
1899 | j = chain->nr - i - 1; |
1900 | ||
1901 | #ifdef HAVE_SKIP_CALLCHAIN_IDX | |
1902 | if (j == skip_idx) | |
1903 | continue; | |
1904 | #endif | |
1905 | ip = chain->ips[j]; | |
3f067dca | 1906 | |
a29d5c9b ACM |
1907 | if (ip >= PERF_CONTEXT_MAX) { |
1908 | if (++nr_contexts > sysctl_perf_event_max_contexts_per_stack) | |
1909 | goto out_corrupted_callchain; | |
1910 | } else { | |
1911 | if (++nr_entries > sysctl_perf_event_max_stack) | |
1912 | goto out_corrupted_callchain; | |
1913 | } | |
1914 | ||
91d7b2de | 1915 | err = add_callchain_ip(thread, cursor, parent, root_al, &cpumode, ip); |
3f067dca | 1916 | |
3f067dca | 1917 | if (err) |
2e77784b | 1918 | return (err < 0) ? err : 0; |
3f067dca ACM |
1919 | } |
1920 | ||
1921 | return 0; | |
a29d5c9b ACM |
1922 | |
1923 | out_corrupted_callchain: | |
1924 | pr_warning("corrupted callchain. skipping...\n"); | |
1925 | return 0; | |
3f067dca ACM |
1926 | } |
1927 | ||
1928 | static int unwind_entry(struct unwind_entry *entry, void *arg) | |
1929 | { | |
1930 | struct callchain_cursor *cursor = arg; | |
b49a8fe5 NK |
1931 | |
1932 | if (symbol_conf.hide_unresolved && entry->sym == NULL) | |
1933 | return 0; | |
3f067dca ACM |
1934 | return callchain_cursor_append(cursor, entry->ip, |
1935 | entry->map, entry->sym); | |
1936 | } | |
1937 | ||
9919a65e CP |
1938 | static int thread__resolve_callchain_unwind(struct thread *thread, |
1939 | struct callchain_cursor *cursor, | |
1940 | struct perf_evsel *evsel, | |
1941 | struct perf_sample *sample, | |
1942 | int max_stack) | |
3f067dca | 1943 | { |
3f067dca ACM |
1944 | /* Can we do dwarf post unwind? */ |
1945 | if (!((evsel->attr.sample_type & PERF_SAMPLE_REGS_USER) && | |
1946 | (evsel->attr.sample_type & PERF_SAMPLE_STACK_USER))) | |
1947 | return 0; | |
1948 | ||
1949 | /* Bail out if nothing was captured. */ | |
1950 | if ((!sample->user_regs.regs) || | |
1951 | (!sample->user_stack.size)) | |
1952 | return 0; | |
1953 | ||
91d7b2de | 1954 | return unwind__get_entries(unwind_entry, cursor, |
352ea45a | 1955 | thread, sample, max_stack); |
9919a65e | 1956 | } |
3f067dca | 1957 | |
9919a65e CP |
1958 | int thread__resolve_callchain(struct thread *thread, |
1959 | struct callchain_cursor *cursor, | |
1960 | struct perf_evsel *evsel, | |
1961 | struct perf_sample *sample, | |
1962 | struct symbol **parent, | |
1963 | struct addr_location *root_al, | |
1964 | int max_stack) | |
1965 | { | |
1966 | int ret = 0; | |
1967 | ||
1968 | callchain_cursor_reset(&callchain_cursor); | |
1969 | ||
1970 | if (callchain_param.order == ORDER_CALLEE) { | |
1971 | ret = thread__resolve_callchain_sample(thread, cursor, | |
1972 | evsel, sample, | |
1973 | parent, root_al, | |
1974 | max_stack); | |
1975 | if (ret) | |
1976 | return ret; | |
1977 | ret = thread__resolve_callchain_unwind(thread, cursor, | |
1978 | evsel, sample, | |
1979 | max_stack); | |
1980 | } else { | |
1981 | ret = thread__resolve_callchain_unwind(thread, cursor, | |
1982 | evsel, sample, | |
1983 | max_stack); | |
1984 | if (ret) | |
1985 | return ret; | |
1986 | ret = thread__resolve_callchain_sample(thread, cursor, | |
1987 | evsel, sample, | |
1988 | parent, root_al, | |
1989 | max_stack); | |
1990 | } | |
1991 | ||
1992 | return ret; | |
3f067dca | 1993 | } |
35feee19 DA |
1994 | |
1995 | int machine__for_each_thread(struct machine *machine, | |
1996 | int (*fn)(struct thread *thread, void *p), | |
1997 | void *priv) | |
1998 | { | |
1999 | struct rb_node *nd; | |
2000 | struct thread *thread; | |
2001 | int rc = 0; | |
2002 | ||
2003 | for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) { | |
2004 | thread = rb_entry(nd, struct thread, rb_node); | |
2005 | rc = fn(thread, priv); | |
2006 | if (rc != 0) | |
2007 | return rc; | |
2008 | } | |
2009 | ||
2010 | list_for_each_entry(thread, &machine->dead_threads, node) { | |
2011 | rc = fn(thread, priv); | |
2012 | if (rc != 0) | |
2013 | return rc; | |
2014 | } | |
2015 | return rc; | |
2016 | } | |
58d925dc | 2017 | |
a5499b37 AH |
2018 | int machines__for_each_thread(struct machines *machines, |
2019 | int (*fn)(struct thread *thread, void *p), | |
2020 | void *priv) | |
2021 | { | |
2022 | struct rb_node *nd; | |
2023 | int rc = 0; | |
2024 | ||
2025 | rc = machine__for_each_thread(&machines->host, fn, priv); | |
2026 | if (rc != 0) | |
2027 | return rc; | |
2028 | ||
2029 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { | |
2030 | struct machine *machine = rb_entry(nd, struct machine, rb_node); | |
2031 | ||
2032 | rc = machine__for_each_thread(machine, fn, priv); | |
2033 | if (rc != 0) | |
2034 | return rc; | |
2035 | } | |
2036 | return rc; | |
2037 | } | |
2038 | ||
a33fbd56 | 2039 | int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool, |
602ad878 | 2040 | struct target *target, struct thread_map *threads, |
9d9cad76 KL |
2041 | perf_event__handler_t process, bool data_mmap, |
2042 | unsigned int proc_map_timeout) | |
58d925dc | 2043 | { |
602ad878 | 2044 | if (target__has_task(target)) |
9d9cad76 | 2045 | return perf_event__synthesize_thread_map(tool, threads, process, machine, data_mmap, proc_map_timeout); |
602ad878 | 2046 | else if (target__has_cpu(target)) |
9d9cad76 | 2047 | return perf_event__synthesize_threads(tool, process, machine, data_mmap, proc_map_timeout); |
58d925dc ACM |
2048 | /* command specified */ |
2049 | return 0; | |
2050 | } | |
b9d266ba AH |
2051 | |
2052 | pid_t machine__get_current_tid(struct machine *machine, int cpu) | |
2053 | { | |
2054 | if (cpu < 0 || cpu >= MAX_NR_CPUS || !machine->current_tid) | |
2055 | return -1; | |
2056 | ||
2057 | return machine->current_tid[cpu]; | |
2058 | } | |
2059 | ||
2060 | int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid, | |
2061 | pid_t tid) | |
2062 | { | |
2063 | struct thread *thread; | |
2064 | ||
2065 | if (cpu < 0) | |
2066 | return -EINVAL; | |
2067 | ||
2068 | if (!machine->current_tid) { | |
2069 | int i; | |
2070 | ||
2071 | machine->current_tid = calloc(MAX_NR_CPUS, sizeof(pid_t)); | |
2072 | if (!machine->current_tid) | |
2073 | return -ENOMEM; | |
2074 | for (i = 0; i < MAX_NR_CPUS; i++) | |
2075 | machine->current_tid[i] = -1; | |
2076 | } | |
2077 | ||
2078 | if (cpu >= MAX_NR_CPUS) { | |
2079 | pr_err("Requested CPU %d too large. ", cpu); | |
2080 | pr_err("Consider raising MAX_NR_CPUS\n"); | |
2081 | return -EINVAL; | |
2082 | } | |
2083 | ||
2084 | machine->current_tid[cpu] = tid; | |
2085 | ||
2086 | thread = machine__findnew_thread(machine, pid, tid); | |
2087 | if (!thread) | |
2088 | return -ENOMEM; | |
2089 | ||
2090 | thread->cpu = cpu; | |
b91fc39f | 2091 | thread__put(thread); |
b9d266ba AH |
2092 | |
2093 | return 0; | |
2094 | } | |
fbe2af45 AH |
2095 | |
2096 | int machine__get_kernel_start(struct machine *machine) | |
2097 | { | |
a5e813c6 | 2098 | struct map *map = machine__kernel_map(machine); |
fbe2af45 AH |
2099 | int err = 0; |
2100 | ||
2101 | /* | |
2102 | * The only addresses above 2^63 are kernel addresses of a 64-bit | |
2103 | * kernel. Note that addresses are unsigned so that on a 32-bit system | |
2104 | * all addresses including kernel addresses are less than 2^32. In | |
2105 | * that case (32-bit system), if the kernel mapping is unknown, all | |
2106 | * addresses will be assumed to be in user space - see | |
2107 | * machine__kernel_ip(). | |
2108 | */ | |
2109 | machine->kernel_start = 1ULL << 63; | |
2110 | if (map) { | |
2111 | err = map__load(map, machine->symbol_filter); | |
2112 | if (map->start) | |
2113 | machine->kernel_start = map->start; | |
2114 | } | |
2115 | return err; | |
2116 | } | |
aa7cc2ae ACM |
2117 | |
2118 | struct dso *machine__findnew_dso(struct machine *machine, const char *filename) | |
2119 | { | |
e8807844 | 2120 | return dsos__findnew(&machine->dsos, filename); |
aa7cc2ae | 2121 | } |
c3168b0d ACM |
2122 | |
2123 | char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp) | |
2124 | { | |
2125 | struct machine *machine = vmachine; | |
2126 | struct map *map; | |
2127 | struct symbol *sym = map_groups__find_symbol(&machine->kmaps, MAP__FUNCTION, *addrp, &map, NULL); | |
2128 | ||
2129 | if (sym == NULL) | |
2130 | return NULL; | |
2131 | ||
2132 | *modp = __map__is_kmodule(map) ? (char *)map->dso->short_name : NULL; | |
2133 | *addrp = map->unmap_ip(map, sym->start); | |
2134 | return sym->name; | |
2135 | } |