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Commit | Line | Data |
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76b31a29 | 1 | #include <dirent.h> |
a43783ae | 2 | #include <errno.h> |
fd20e811 | 3 | #include <inttypes.h> |
1eae20c1 | 4 | #include <regex.h> |
3f067dca | 5 | #include "callchain.h" |
b0a7d1a0 ACM |
6 | #include "debug.h" |
7 | #include "event.h" | |
3f067dca ACM |
8 | #include "evsel.h" |
9 | #include "hist.h" | |
9d2f8e22 ACM |
10 | #include "machine.h" |
11 | #include "map.h" | |
3f067dca | 12 | #include "sort.h" |
69d2591a | 13 | #include "strlist.h" |
9d2f8e22 | 14 | #include "thread.h" |
d027b640 | 15 | #include "vdso.h" |
9d2f8e22 | 16 | #include <stdbool.h> |
7a8ef4c4 ACM |
17 | #include <sys/types.h> |
18 | #include <sys/stat.h> | |
19 | #include <unistd.h> | |
3f067dca | 20 | #include "unwind.h" |
8b7bad58 | 21 | #include "linux/hash.h" |
f3b3614a | 22 | #include "asm/bug.h" |
9d2f8e22 | 23 | |
3d689ed6 ACM |
24 | #include "sane_ctype.h" |
25 | #include <symbol/kallsyms.h> | |
26 | ||
b91fc39f ACM |
27 | static void __machine__remove_thread(struct machine *machine, struct thread *th, bool lock); |
28 | ||
e167f995 ACM |
29 | static void dsos__init(struct dsos *dsos) |
30 | { | |
31 | INIT_LIST_HEAD(&dsos->head); | |
32 | dsos->root = RB_ROOT; | |
e8807844 | 33 | pthread_rwlock_init(&dsos->lock, NULL); |
e167f995 ACM |
34 | } |
35 | ||
69d2591a ACM |
36 | int machine__init(struct machine *machine, const char *root_dir, pid_t pid) |
37 | { | |
93b0ba3c | 38 | memset(machine, 0, sizeof(*machine)); |
11246c70 | 39 | map_groups__init(&machine->kmaps, machine); |
69d2591a | 40 | RB_CLEAR_NODE(&machine->rb_node); |
3d39ac53 | 41 | dsos__init(&machine->dsos); |
69d2591a ACM |
42 | |
43 | machine->threads = RB_ROOT; | |
b91fc39f | 44 | pthread_rwlock_init(&machine->threads_lock, NULL); |
d2c11034 | 45 | machine->nr_threads = 0; |
69d2591a ACM |
46 | INIT_LIST_HEAD(&machine->dead_threads); |
47 | machine->last_match = NULL; | |
48 | ||
d027b640 | 49 | machine->vdso_info = NULL; |
4cde998d | 50 | machine->env = NULL; |
d027b640 | 51 | |
69d2591a ACM |
52 | machine->pid = pid; |
53 | ||
14bd6d20 | 54 | machine->id_hdr_size = 0; |
caf8a0d0 | 55 | machine->kptr_restrict_warned = false; |
cfe1c414 | 56 | machine->comm_exec = false; |
fbe2af45 | 57 | machine->kernel_start = 0; |
611a5ce8 | 58 | |
cc1121ab MH |
59 | memset(machine->vmlinux_maps, 0, sizeof(machine->vmlinux_maps)); |
60 | ||
69d2591a ACM |
61 | machine->root_dir = strdup(root_dir); |
62 | if (machine->root_dir == NULL) | |
63 | return -ENOMEM; | |
64 | ||
65 | if (pid != HOST_KERNEL_ID) { | |
1fcb8768 | 66 | struct thread *thread = machine__findnew_thread(machine, -1, |
314add6b | 67 | pid); |
69d2591a ACM |
68 | char comm[64]; |
69 | ||
70 | if (thread == NULL) | |
71 | return -ENOMEM; | |
72 | ||
73 | snprintf(comm, sizeof(comm), "[guest/%d]", pid); | |
162f0bef | 74 | thread__set_comm(thread, comm, 0); |
b91fc39f | 75 | thread__put(thread); |
69d2591a ACM |
76 | } |
77 | ||
b9d266ba AH |
78 | machine->current_tid = NULL; |
79 | ||
69d2591a ACM |
80 | return 0; |
81 | } | |
82 | ||
8fb598e5 DA |
83 | struct machine *machine__new_host(void) |
84 | { | |
85 | struct machine *machine = malloc(sizeof(*machine)); | |
86 | ||
87 | if (machine != NULL) { | |
88 | machine__init(machine, "", HOST_KERNEL_ID); | |
89 | ||
90 | if (machine__create_kernel_maps(machine) < 0) | |
91 | goto out_delete; | |
92 | } | |
93 | ||
94 | return machine; | |
95 | out_delete: | |
96 | free(machine); | |
97 | return NULL; | |
98 | } | |
99 | ||
7d132caa ACM |
100 | struct machine *machine__new_kallsyms(void) |
101 | { | |
102 | struct machine *machine = machine__new_host(); | |
103 | /* | |
104 | * FIXME: | |
105 | * 1) MAP__FUNCTION will go away when we stop loading separate maps for | |
106 | * functions and data objects. | |
107 | * 2) We should switch to machine__load_kallsyms(), i.e. not explicitely | |
108 | * ask for not using the kcore parsing code, once this one is fixed | |
109 | * to create a map per module. | |
110 | */ | |
111 | if (machine && __machine__load_kallsyms(machine, "/proc/kallsyms", MAP__FUNCTION, true) <= 0) { | |
112 | machine__delete(machine); | |
113 | machine = NULL; | |
114 | } | |
115 | ||
116 | return machine; | |
117 | } | |
118 | ||
d3a7c489 | 119 | static void dsos__purge(struct dsos *dsos) |
69d2591a ACM |
120 | { |
121 | struct dso *pos, *n; | |
122 | ||
e8807844 ACM |
123 | pthread_rwlock_wrlock(&dsos->lock); |
124 | ||
8fa7d87f | 125 | list_for_each_entry_safe(pos, n, &dsos->head, node) { |
4598a0a6 | 126 | RB_CLEAR_NODE(&pos->rb_node); |
e266a753 | 127 | pos->root = NULL; |
d3a7c489 ACM |
128 | list_del_init(&pos->node); |
129 | dso__put(pos); | |
69d2591a | 130 | } |
e8807844 ACM |
131 | |
132 | pthread_rwlock_unlock(&dsos->lock); | |
d3a7c489 | 133 | } |
e8807844 | 134 | |
d3a7c489 ACM |
135 | static void dsos__exit(struct dsos *dsos) |
136 | { | |
137 | dsos__purge(dsos); | |
e8807844 | 138 | pthread_rwlock_destroy(&dsos->lock); |
69d2591a ACM |
139 | } |
140 | ||
3f067dca ACM |
141 | void machine__delete_threads(struct machine *machine) |
142 | { | |
b91fc39f | 143 | struct rb_node *nd; |
3f067dca | 144 | |
b91fc39f ACM |
145 | pthread_rwlock_wrlock(&machine->threads_lock); |
146 | nd = rb_first(&machine->threads); | |
3f067dca ACM |
147 | while (nd) { |
148 | struct thread *t = rb_entry(nd, struct thread, rb_node); | |
149 | ||
3f067dca | 150 | nd = rb_next(nd); |
b91fc39f | 151 | __machine__remove_thread(machine, t, false); |
3f067dca | 152 | } |
b91fc39f | 153 | pthread_rwlock_unlock(&machine->threads_lock); |
3f067dca ACM |
154 | } |
155 | ||
69d2591a ACM |
156 | void machine__exit(struct machine *machine) |
157 | { | |
ebe9729c | 158 | machine__destroy_kernel_maps(machine); |
69d2591a | 159 | map_groups__exit(&machine->kmaps); |
e8807844 | 160 | dsos__exit(&machine->dsos); |
9a4388c7 | 161 | machine__exit_vdso(machine); |
04662523 | 162 | zfree(&machine->root_dir); |
b9d266ba | 163 | zfree(&machine->current_tid); |
b91fc39f | 164 | pthread_rwlock_destroy(&machine->threads_lock); |
69d2591a ACM |
165 | } |
166 | ||
167 | void machine__delete(struct machine *machine) | |
168 | { | |
32ca678d ACM |
169 | if (machine) { |
170 | machine__exit(machine); | |
171 | free(machine); | |
172 | } | |
69d2591a ACM |
173 | } |
174 | ||
876650e6 ACM |
175 | void machines__init(struct machines *machines) |
176 | { | |
177 | machine__init(&machines->host, "", HOST_KERNEL_ID); | |
178 | machines->guests = RB_ROOT; | |
179 | } | |
180 | ||
181 | void machines__exit(struct machines *machines) | |
182 | { | |
183 | machine__exit(&machines->host); | |
184 | /* XXX exit guest */ | |
185 | } | |
186 | ||
187 | struct machine *machines__add(struct machines *machines, pid_t pid, | |
69d2591a ACM |
188 | const char *root_dir) |
189 | { | |
876650e6 | 190 | struct rb_node **p = &machines->guests.rb_node; |
69d2591a ACM |
191 | struct rb_node *parent = NULL; |
192 | struct machine *pos, *machine = malloc(sizeof(*machine)); | |
193 | ||
194 | if (machine == NULL) | |
195 | return NULL; | |
196 | ||
197 | if (machine__init(machine, root_dir, pid) != 0) { | |
198 | free(machine); | |
199 | return NULL; | |
200 | } | |
201 | ||
202 | while (*p != NULL) { | |
203 | parent = *p; | |
204 | pos = rb_entry(parent, struct machine, rb_node); | |
205 | if (pid < pos->pid) | |
206 | p = &(*p)->rb_left; | |
207 | else | |
208 | p = &(*p)->rb_right; | |
209 | } | |
210 | ||
211 | rb_link_node(&machine->rb_node, parent, p); | |
876650e6 | 212 | rb_insert_color(&machine->rb_node, &machines->guests); |
69d2591a ACM |
213 | |
214 | return machine; | |
215 | } | |
216 | ||
cfe1c414 AH |
217 | void machines__set_comm_exec(struct machines *machines, bool comm_exec) |
218 | { | |
219 | struct rb_node *nd; | |
220 | ||
221 | machines->host.comm_exec = comm_exec; | |
222 | ||
223 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { | |
224 | struct machine *machine = rb_entry(nd, struct machine, rb_node); | |
225 | ||
226 | machine->comm_exec = comm_exec; | |
227 | } | |
228 | } | |
229 | ||
876650e6 | 230 | struct machine *machines__find(struct machines *machines, pid_t pid) |
69d2591a | 231 | { |
876650e6 | 232 | struct rb_node **p = &machines->guests.rb_node; |
69d2591a ACM |
233 | struct rb_node *parent = NULL; |
234 | struct machine *machine; | |
235 | struct machine *default_machine = NULL; | |
236 | ||
876650e6 ACM |
237 | if (pid == HOST_KERNEL_ID) |
238 | return &machines->host; | |
239 | ||
69d2591a ACM |
240 | while (*p != NULL) { |
241 | parent = *p; | |
242 | machine = rb_entry(parent, struct machine, rb_node); | |
243 | if (pid < machine->pid) | |
244 | p = &(*p)->rb_left; | |
245 | else if (pid > machine->pid) | |
246 | p = &(*p)->rb_right; | |
247 | else | |
248 | return machine; | |
249 | if (!machine->pid) | |
250 | default_machine = machine; | |
251 | } | |
252 | ||
253 | return default_machine; | |
254 | } | |
255 | ||
876650e6 | 256 | struct machine *machines__findnew(struct machines *machines, pid_t pid) |
69d2591a ACM |
257 | { |
258 | char path[PATH_MAX]; | |
259 | const char *root_dir = ""; | |
260 | struct machine *machine = machines__find(machines, pid); | |
261 | ||
262 | if (machine && (machine->pid == pid)) | |
263 | goto out; | |
264 | ||
265 | if ((pid != HOST_KERNEL_ID) && | |
266 | (pid != DEFAULT_GUEST_KERNEL_ID) && | |
267 | (symbol_conf.guestmount)) { | |
268 | sprintf(path, "%s/%d", symbol_conf.guestmount, pid); | |
269 | if (access(path, R_OK)) { | |
270 | static struct strlist *seen; | |
271 | ||
272 | if (!seen) | |
4a77e218 | 273 | seen = strlist__new(NULL, NULL); |
69d2591a ACM |
274 | |
275 | if (!strlist__has_entry(seen, path)) { | |
276 | pr_err("Can't access file %s\n", path); | |
277 | strlist__add(seen, path); | |
278 | } | |
279 | machine = NULL; | |
280 | goto out; | |
281 | } | |
282 | root_dir = path; | |
283 | } | |
284 | ||
285 | machine = machines__add(machines, pid, root_dir); | |
286 | out: | |
287 | return machine; | |
288 | } | |
289 | ||
876650e6 ACM |
290 | void machines__process_guests(struct machines *machines, |
291 | machine__process_t process, void *data) | |
69d2591a ACM |
292 | { |
293 | struct rb_node *nd; | |
294 | ||
876650e6 | 295 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { |
69d2591a ACM |
296 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
297 | process(pos, data); | |
298 | } | |
299 | } | |
300 | ||
301 | char *machine__mmap_name(struct machine *machine, char *bf, size_t size) | |
302 | { | |
303 | if (machine__is_host(machine)) | |
304 | snprintf(bf, size, "[%s]", "kernel.kallsyms"); | |
305 | else if (machine__is_default_guest(machine)) | |
306 | snprintf(bf, size, "[%s]", "guest.kernel.kallsyms"); | |
307 | else { | |
308 | snprintf(bf, size, "[%s.%d]", "guest.kernel.kallsyms", | |
309 | machine->pid); | |
310 | } | |
311 | ||
312 | return bf; | |
313 | } | |
314 | ||
876650e6 | 315 | void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size) |
69d2591a ACM |
316 | { |
317 | struct rb_node *node; | |
318 | struct machine *machine; | |
319 | ||
876650e6 ACM |
320 | machines->host.id_hdr_size = id_hdr_size; |
321 | ||
322 | for (node = rb_first(&machines->guests); node; node = rb_next(node)) { | |
69d2591a ACM |
323 | machine = rb_entry(node, struct machine, rb_node); |
324 | machine->id_hdr_size = id_hdr_size; | |
325 | } | |
326 | ||
327 | return; | |
328 | } | |
329 | ||
29ce3612 AH |
330 | static void machine__update_thread_pid(struct machine *machine, |
331 | struct thread *th, pid_t pid) | |
332 | { | |
333 | struct thread *leader; | |
334 | ||
335 | if (pid == th->pid_ || pid == -1 || th->pid_ != -1) | |
336 | return; | |
337 | ||
338 | th->pid_ = pid; | |
339 | ||
340 | if (th->pid_ == th->tid) | |
341 | return; | |
342 | ||
b91fc39f | 343 | leader = __machine__findnew_thread(machine, th->pid_, th->pid_); |
29ce3612 AH |
344 | if (!leader) |
345 | goto out_err; | |
346 | ||
347 | if (!leader->mg) | |
11246c70 | 348 | leader->mg = map_groups__new(machine); |
29ce3612 AH |
349 | |
350 | if (!leader->mg) | |
351 | goto out_err; | |
352 | ||
353 | if (th->mg == leader->mg) | |
354 | return; | |
355 | ||
356 | if (th->mg) { | |
357 | /* | |
358 | * Maps are created from MMAP events which provide the pid and | |
359 | * tid. Consequently there never should be any maps on a thread | |
360 | * with an unknown pid. Just print an error if there are. | |
361 | */ | |
362 | if (!map_groups__empty(th->mg)) | |
363 | pr_err("Discarding thread maps for %d:%d\n", | |
364 | th->pid_, th->tid); | |
8e160b2e | 365 | map_groups__put(th->mg); |
29ce3612 AH |
366 | } |
367 | ||
368 | th->mg = map_groups__get(leader->mg); | |
abd82868 ACM |
369 | out_put: |
370 | thread__put(leader); | |
29ce3612 | 371 | return; |
29ce3612 AH |
372 | out_err: |
373 | pr_err("Failed to join map groups for %d:%d\n", th->pid_, th->tid); | |
abd82868 | 374 | goto out_put; |
29ce3612 AH |
375 | } |
376 | ||
abd82868 | 377 | /* |
bd1a0be5 | 378 | * Caller must eventually drop thread->refcnt returned with a successful |
abd82868 ACM |
379 | * lookup/new thread inserted. |
380 | */ | |
b91fc39f ACM |
381 | static struct thread *____machine__findnew_thread(struct machine *machine, |
382 | pid_t pid, pid_t tid, | |
383 | bool create) | |
9d2f8e22 ACM |
384 | { |
385 | struct rb_node **p = &machine->threads.rb_node; | |
386 | struct rb_node *parent = NULL; | |
387 | struct thread *th; | |
388 | ||
389 | /* | |
38051234 | 390 | * Front-end cache - TID lookups come in blocks, |
9d2f8e22 ACM |
391 | * so most of the time we dont have to look up |
392 | * the full rbtree: | |
393 | */ | |
29ce3612 | 394 | th = machine->last_match; |
f3b623b8 ACM |
395 | if (th != NULL) { |
396 | if (th->tid == tid) { | |
397 | machine__update_thread_pid(machine, th, pid); | |
abd82868 | 398 | return thread__get(th); |
f3b623b8 ACM |
399 | } |
400 | ||
0ceb8f6e | 401 | machine->last_match = NULL; |
99d725fc | 402 | } |
9d2f8e22 ACM |
403 | |
404 | while (*p != NULL) { | |
405 | parent = *p; | |
406 | th = rb_entry(parent, struct thread, rb_node); | |
407 | ||
38051234 | 408 | if (th->tid == tid) { |
0ceb8f6e | 409 | machine->last_match = th; |
29ce3612 | 410 | machine__update_thread_pid(machine, th, pid); |
abd82868 | 411 | return thread__get(th); |
9d2f8e22 ACM |
412 | } |
413 | ||
38051234 | 414 | if (tid < th->tid) |
9d2f8e22 ACM |
415 | p = &(*p)->rb_left; |
416 | else | |
417 | p = &(*p)->rb_right; | |
418 | } | |
419 | ||
420 | if (!create) | |
421 | return NULL; | |
422 | ||
99d725fc | 423 | th = thread__new(pid, tid); |
9d2f8e22 ACM |
424 | if (th != NULL) { |
425 | rb_link_node(&th->rb_node, parent, p); | |
426 | rb_insert_color(&th->rb_node, &machine->threads); | |
cddcef60 JO |
427 | |
428 | /* | |
429 | * We have to initialize map_groups separately | |
430 | * after rb tree is updated. | |
431 | * | |
432 | * The reason is that we call machine__findnew_thread | |
433 | * within thread__init_map_groups to find the thread | |
434 | * leader and that would screwed the rb tree. | |
435 | */ | |
418029b7 | 436 | if (thread__init_map_groups(th, machine)) { |
0170b14f | 437 | rb_erase_init(&th->rb_node, &machine->threads); |
b91fc39f | 438 | RB_CLEAR_NODE(&th->rb_node); |
abd82868 | 439 | thread__put(th); |
cddcef60 | 440 | return NULL; |
418029b7 | 441 | } |
f3b623b8 ACM |
442 | /* |
443 | * It is now in the rbtree, get a ref | |
444 | */ | |
445 | thread__get(th); | |
0ceb8f6e | 446 | machine->last_match = th; |
d2c11034 | 447 | ++machine->nr_threads; |
9d2f8e22 ACM |
448 | } |
449 | ||
450 | return th; | |
451 | } | |
452 | ||
b91fc39f ACM |
453 | struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid) |
454 | { | |
455 | return ____machine__findnew_thread(machine, pid, tid, true); | |
456 | } | |
457 | ||
314add6b AH |
458 | struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, |
459 | pid_t tid) | |
9d2f8e22 | 460 | { |
b91fc39f ACM |
461 | struct thread *th; |
462 | ||
463 | pthread_rwlock_wrlock(&machine->threads_lock); | |
abd82868 | 464 | th = __machine__findnew_thread(machine, pid, tid); |
b91fc39f ACM |
465 | pthread_rwlock_unlock(&machine->threads_lock); |
466 | return th; | |
9d2f8e22 ACM |
467 | } |
468 | ||
d75e6097 JO |
469 | struct thread *machine__find_thread(struct machine *machine, pid_t pid, |
470 | pid_t tid) | |
9d2f8e22 | 471 | { |
b91fc39f ACM |
472 | struct thread *th; |
473 | pthread_rwlock_rdlock(&machine->threads_lock); | |
abd82868 | 474 | th = ____machine__findnew_thread(machine, pid, tid, false); |
b91fc39f ACM |
475 | pthread_rwlock_unlock(&machine->threads_lock); |
476 | return th; | |
9d2f8e22 | 477 | } |
b0a7d1a0 | 478 | |
cfe1c414 AH |
479 | struct comm *machine__thread_exec_comm(struct machine *machine, |
480 | struct thread *thread) | |
481 | { | |
482 | if (machine->comm_exec) | |
483 | return thread__exec_comm(thread); | |
484 | else | |
485 | return thread__comm(thread); | |
486 | } | |
487 | ||
162f0bef FW |
488 | int machine__process_comm_event(struct machine *machine, union perf_event *event, |
489 | struct perf_sample *sample) | |
b0a7d1a0 | 490 | { |
314add6b AH |
491 | struct thread *thread = machine__findnew_thread(machine, |
492 | event->comm.pid, | |
493 | event->comm.tid); | |
65de51f9 | 494 | bool exec = event->header.misc & PERF_RECORD_MISC_COMM_EXEC; |
b91fc39f | 495 | int err = 0; |
b0a7d1a0 | 496 | |
cfe1c414 AH |
497 | if (exec) |
498 | machine->comm_exec = true; | |
499 | ||
b0a7d1a0 ACM |
500 | if (dump_trace) |
501 | perf_event__fprintf_comm(event, stdout); | |
502 | ||
65de51f9 AH |
503 | if (thread == NULL || |
504 | __thread__set_comm(thread, event->comm.comm, sample->time, exec)) { | |
b0a7d1a0 | 505 | dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); |
b91fc39f | 506 | err = -1; |
b0a7d1a0 ACM |
507 | } |
508 | ||
b91fc39f ACM |
509 | thread__put(thread); |
510 | ||
511 | return err; | |
b0a7d1a0 ACM |
512 | } |
513 | ||
f3b3614a HB |
514 | int machine__process_namespaces_event(struct machine *machine __maybe_unused, |
515 | union perf_event *event, | |
516 | struct perf_sample *sample __maybe_unused) | |
517 | { | |
518 | struct thread *thread = machine__findnew_thread(machine, | |
519 | event->namespaces.pid, | |
520 | event->namespaces.tid); | |
521 | int err = 0; | |
522 | ||
523 | WARN_ONCE(event->namespaces.nr_namespaces > NR_NAMESPACES, | |
524 | "\nWARNING: kernel seems to support more namespaces than perf" | |
525 | " tool.\nTry updating the perf tool..\n\n"); | |
526 | ||
527 | WARN_ONCE(event->namespaces.nr_namespaces < NR_NAMESPACES, | |
528 | "\nWARNING: perf tool seems to support more namespaces than" | |
529 | " the kernel.\nTry updating the kernel..\n\n"); | |
530 | ||
531 | if (dump_trace) | |
532 | perf_event__fprintf_namespaces(event, stdout); | |
533 | ||
534 | if (thread == NULL || | |
535 | thread__set_namespaces(thread, sample->time, &event->namespaces)) { | |
536 | dump_printf("problem processing PERF_RECORD_NAMESPACES, skipping event.\n"); | |
537 | err = -1; | |
538 | } | |
539 | ||
540 | thread__put(thread); | |
541 | ||
542 | return err; | |
543 | } | |
544 | ||
b0a7d1a0 | 545 | int machine__process_lost_event(struct machine *machine __maybe_unused, |
162f0bef | 546 | union perf_event *event, struct perf_sample *sample __maybe_unused) |
b0a7d1a0 ACM |
547 | { |
548 | dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n", | |
549 | event->lost.id, event->lost.lost); | |
550 | return 0; | |
551 | } | |
552 | ||
c4937a91 KL |
553 | int machine__process_lost_samples_event(struct machine *machine __maybe_unused, |
554 | union perf_event *event, struct perf_sample *sample) | |
555 | { | |
556 | dump_printf(": id:%" PRIu64 ": lost samples :%" PRIu64 "\n", | |
557 | sample->id, event->lost_samples.lost); | |
558 | return 0; | |
559 | } | |
560 | ||
9f2de315 ACM |
561 | static struct dso *machine__findnew_module_dso(struct machine *machine, |
562 | struct kmod_path *m, | |
563 | const char *filename) | |
da17ea33 JO |
564 | { |
565 | struct dso *dso; | |
da17ea33 | 566 | |
e8807844 ACM |
567 | pthread_rwlock_wrlock(&machine->dsos.lock); |
568 | ||
569 | dso = __dsos__find(&machine->dsos, m->name, true); | |
da17ea33 | 570 | if (!dso) { |
e8807844 | 571 | dso = __dsos__addnew(&machine->dsos, m->name); |
da17ea33 | 572 | if (dso == NULL) |
e8807844 | 573 | goto out_unlock; |
da17ea33 | 574 | |
6b335e8f | 575 | dso__set_module_info(dso, m, machine); |
ca33380a | 576 | dso__set_long_name(dso, strdup(filename), true); |
da17ea33 JO |
577 | } |
578 | ||
d3a7c489 | 579 | dso__get(dso); |
e8807844 ACM |
580 | out_unlock: |
581 | pthread_rwlock_unlock(&machine->dsos.lock); | |
da17ea33 JO |
582 | return dso; |
583 | } | |
584 | ||
4a96f7a0 AH |
585 | int machine__process_aux_event(struct machine *machine __maybe_unused, |
586 | union perf_event *event) | |
587 | { | |
588 | if (dump_trace) | |
589 | perf_event__fprintf_aux(event, stdout); | |
590 | return 0; | |
591 | } | |
592 | ||
0ad21f68 AH |
593 | int machine__process_itrace_start_event(struct machine *machine __maybe_unused, |
594 | union perf_event *event) | |
595 | { | |
596 | if (dump_trace) | |
597 | perf_event__fprintf_itrace_start(event, stdout); | |
598 | return 0; | |
599 | } | |
600 | ||
0286039f AH |
601 | int machine__process_switch_event(struct machine *machine __maybe_unused, |
602 | union perf_event *event) | |
603 | { | |
604 | if (dump_trace) | |
605 | perf_event__fprintf_switch(event, stdout); | |
606 | return 0; | |
607 | } | |
608 | ||
c03d5184 WN |
609 | static void dso__adjust_kmod_long_name(struct dso *dso, const char *filename) |
610 | { | |
611 | const char *dup_filename; | |
612 | ||
613 | if (!filename || !dso || !dso->long_name) | |
614 | return; | |
615 | if (dso->long_name[0] != '[') | |
616 | return; | |
617 | if (!strchr(filename, '/')) | |
618 | return; | |
619 | ||
620 | dup_filename = strdup(filename); | |
621 | if (!dup_filename) | |
622 | return; | |
623 | ||
5dcf16df | 624 | dso__set_long_name(dso, dup_filename, true); |
c03d5184 WN |
625 | } |
626 | ||
9f2de315 ACM |
627 | struct map *machine__findnew_module_map(struct machine *machine, u64 start, |
628 | const char *filename) | |
3f067dca | 629 | { |
ca33380a | 630 | struct map *map = NULL; |
566c69c3 | 631 | struct dso *dso = NULL; |
ca33380a | 632 | struct kmod_path m; |
3f067dca | 633 | |
ca33380a | 634 | if (kmod_path__parse_name(&m, filename)) |
3f067dca ACM |
635 | return NULL; |
636 | ||
bc84f464 JO |
637 | map = map_groups__find_by_name(&machine->kmaps, MAP__FUNCTION, |
638 | m.name); | |
c03d5184 WN |
639 | if (map) { |
640 | /* | |
641 | * If the map's dso is an offline module, give dso__load() | |
642 | * a chance to find the file path of that module by fixing | |
643 | * long_name. | |
644 | */ | |
645 | dso__adjust_kmod_long_name(map->dso, filename); | |
bc84f464 | 646 | goto out; |
c03d5184 | 647 | } |
bc84f464 | 648 | |
9f2de315 | 649 | dso = machine__findnew_module_dso(machine, &m, filename); |
ca33380a JO |
650 | if (dso == NULL) |
651 | goto out; | |
652 | ||
3f067dca ACM |
653 | map = map__new2(start, dso, MAP__FUNCTION); |
654 | if (map == NULL) | |
ca33380a | 655 | goto out; |
3f067dca | 656 | |
3f067dca | 657 | map_groups__insert(&machine->kmaps, map); |
ca33380a | 658 | |
9afcb420 MH |
659 | /* Put the map here because map_groups__insert alread got it */ |
660 | map__put(map); | |
ca33380a | 661 | out: |
566c69c3 MH |
662 | /* put the dso here, corresponding to machine__findnew_module_dso */ |
663 | dso__put(dso); | |
ca33380a | 664 | free(m.name); |
3f067dca ACM |
665 | return map; |
666 | } | |
667 | ||
876650e6 | 668 | size_t machines__fprintf_dsos(struct machines *machines, FILE *fp) |
3f067dca ACM |
669 | { |
670 | struct rb_node *nd; | |
3d39ac53 | 671 | size_t ret = __dsos__fprintf(&machines->host.dsos.head, fp); |
3f067dca | 672 | |
876650e6 | 673 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { |
3f067dca | 674 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
3d39ac53 | 675 | ret += __dsos__fprintf(&pos->dsos.head, fp); |
3f067dca ACM |
676 | } |
677 | ||
678 | return ret; | |
679 | } | |
680 | ||
8fa7d87f | 681 | size_t machine__fprintf_dsos_buildid(struct machine *m, FILE *fp, |
3f067dca ACM |
682 | bool (skip)(struct dso *dso, int parm), int parm) |
683 | { | |
3d39ac53 | 684 | return __dsos__fprintf_buildid(&m->dsos.head, fp, skip, parm); |
3f067dca ACM |
685 | } |
686 | ||
876650e6 | 687 | size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, |
3f067dca ACM |
688 | bool (skip)(struct dso *dso, int parm), int parm) |
689 | { | |
690 | struct rb_node *nd; | |
876650e6 | 691 | size_t ret = machine__fprintf_dsos_buildid(&machines->host, fp, skip, parm); |
3f067dca | 692 | |
876650e6 | 693 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { |
3f067dca ACM |
694 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
695 | ret += machine__fprintf_dsos_buildid(pos, fp, skip, parm); | |
696 | } | |
697 | return ret; | |
698 | } | |
699 | ||
700 | size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp) | |
701 | { | |
702 | int i; | |
703 | size_t printed = 0; | |
a5e813c6 | 704 | struct dso *kdso = machine__kernel_map(machine)->dso; |
3f067dca ACM |
705 | |
706 | if (kdso->has_build_id) { | |
707 | char filename[PATH_MAX]; | |
708 | if (dso__build_id_filename(kdso, filename, sizeof(filename))) | |
709 | printed += fprintf(fp, "[0] %s\n", filename); | |
710 | } | |
711 | ||
712 | for (i = 0; i < vmlinux_path__nr_entries; ++i) | |
713 | printed += fprintf(fp, "[%d] %s\n", | |
714 | i + kdso->has_build_id, vmlinux_path[i]); | |
715 | ||
716 | return printed; | |
717 | } | |
718 | ||
719 | size_t machine__fprintf(struct machine *machine, FILE *fp) | |
720 | { | |
d2c11034 | 721 | size_t ret; |
3f067dca ACM |
722 | struct rb_node *nd; |
723 | ||
b91fc39f ACM |
724 | pthread_rwlock_rdlock(&machine->threads_lock); |
725 | ||
d2c11034 ACM |
726 | ret = fprintf(fp, "Threads: %u\n", machine->nr_threads); |
727 | ||
3f067dca ACM |
728 | for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) { |
729 | struct thread *pos = rb_entry(nd, struct thread, rb_node); | |
730 | ||
731 | ret += thread__fprintf(pos, fp); | |
732 | } | |
733 | ||
b91fc39f ACM |
734 | pthread_rwlock_unlock(&machine->threads_lock); |
735 | ||
3f067dca ACM |
736 | return ret; |
737 | } | |
738 | ||
739 | static struct dso *machine__get_kernel(struct machine *machine) | |
740 | { | |
741 | const char *vmlinux_name = NULL; | |
742 | struct dso *kernel; | |
743 | ||
744 | if (machine__is_host(machine)) { | |
745 | vmlinux_name = symbol_conf.vmlinux_name; | |
746 | if (!vmlinux_name) | |
0a77582f | 747 | vmlinux_name = DSO__NAME_KALLSYMS; |
3f067dca | 748 | |
459ce518 ACM |
749 | kernel = machine__findnew_kernel(machine, vmlinux_name, |
750 | "[kernel]", DSO_TYPE_KERNEL); | |
3f067dca ACM |
751 | } else { |
752 | char bf[PATH_MAX]; | |
753 | ||
754 | if (machine__is_default_guest(machine)) | |
755 | vmlinux_name = symbol_conf.default_guest_vmlinux_name; | |
756 | if (!vmlinux_name) | |
757 | vmlinux_name = machine__mmap_name(machine, bf, | |
758 | sizeof(bf)); | |
759 | ||
459ce518 ACM |
760 | kernel = machine__findnew_kernel(machine, vmlinux_name, |
761 | "[guest.kernel]", | |
762 | DSO_TYPE_GUEST_KERNEL); | |
3f067dca ACM |
763 | } |
764 | ||
765 | if (kernel != NULL && (!kernel->has_build_id)) | |
766 | dso__read_running_kernel_build_id(kernel, machine); | |
767 | ||
768 | return kernel; | |
769 | } | |
770 | ||
771 | struct process_args { | |
772 | u64 start; | |
773 | }; | |
774 | ||
15a0a870 AH |
775 | static void machine__get_kallsyms_filename(struct machine *machine, char *buf, |
776 | size_t bufsz) | |
777 | { | |
778 | if (machine__is_default_guest(machine)) | |
779 | scnprintf(buf, bufsz, "%s", symbol_conf.default_guest_kallsyms); | |
780 | else | |
781 | scnprintf(buf, bufsz, "%s/proc/kallsyms", machine->root_dir); | |
782 | } | |
783 | ||
a93f0e55 SQ |
784 | const char *ref_reloc_sym_names[] = {"_text", "_stext", NULL}; |
785 | ||
786 | /* Figure out the start address of kernel map from /proc/kallsyms. | |
787 | * Returns the name of the start symbol in *symbol_name. Pass in NULL as | |
788 | * symbol_name if it's not that important. | |
789 | */ | |
b843f62a ACM |
790 | static int machine__get_running_kernel_start(struct machine *machine, |
791 | const char **symbol_name, u64 *start) | |
3f067dca | 792 | { |
15a0a870 | 793 | char filename[PATH_MAX]; |
b843f62a | 794 | int i, err = -1; |
a93f0e55 SQ |
795 | const char *name; |
796 | u64 addr = 0; | |
3f067dca | 797 | |
15a0a870 | 798 | machine__get_kallsyms_filename(machine, filename, PATH_MAX); |
3f067dca ACM |
799 | |
800 | if (symbol__restricted_filename(filename, "/proc/kallsyms")) | |
801 | return 0; | |
802 | ||
a93f0e55 | 803 | for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) { |
b843f62a ACM |
804 | err = kallsyms__get_function_start(filename, name, &addr); |
805 | if (!err) | |
a93f0e55 SQ |
806 | break; |
807 | } | |
808 | ||
b843f62a ACM |
809 | if (err) |
810 | return -1; | |
811 | ||
a93f0e55 SQ |
812 | if (symbol_name) |
813 | *symbol_name = name; | |
3f067dca | 814 | |
b843f62a ACM |
815 | *start = addr; |
816 | return 0; | |
3f067dca ACM |
817 | } |
818 | ||
819 | int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel) | |
820 | { | |
a0b2f5af | 821 | int type; |
b843f62a ACM |
822 | u64 start = 0; |
823 | ||
824 | if (machine__get_running_kernel_start(machine, NULL, &start)) | |
825 | return -1; | |
3f067dca | 826 | |
cc1121ab MH |
827 | /* In case of renewal the kernel map, destroy previous one */ |
828 | machine__destroy_kernel_maps(machine); | |
829 | ||
3f067dca ACM |
830 | for (type = 0; type < MAP__NR_TYPES; ++type) { |
831 | struct kmap *kmap; | |
77e65977 | 832 | struct map *map; |
3f067dca ACM |
833 | |
834 | machine->vmlinux_maps[type] = map__new2(start, kernel, type); | |
835 | if (machine->vmlinux_maps[type] == NULL) | |
836 | return -1; | |
837 | ||
838 | machine->vmlinux_maps[type]->map_ip = | |
839 | machine->vmlinux_maps[type]->unmap_ip = | |
840 | identity__map_ip; | |
a5e813c6 | 841 | map = __machine__kernel_map(machine, type); |
77e65977 | 842 | kmap = map__kmap(map); |
ba92732e WN |
843 | if (!kmap) |
844 | return -1; | |
845 | ||
3f067dca | 846 | kmap->kmaps = &machine->kmaps; |
77e65977 | 847 | map_groups__insert(&machine->kmaps, map); |
3f067dca ACM |
848 | } |
849 | ||
850 | return 0; | |
851 | } | |
852 | ||
853 | void machine__destroy_kernel_maps(struct machine *machine) | |
854 | { | |
a0b2f5af | 855 | int type; |
3f067dca ACM |
856 | |
857 | for (type = 0; type < MAP__NR_TYPES; ++type) { | |
858 | struct kmap *kmap; | |
a5e813c6 | 859 | struct map *map = __machine__kernel_map(machine, type); |
3f067dca | 860 | |
77e65977 | 861 | if (map == NULL) |
3f067dca ACM |
862 | continue; |
863 | ||
77e65977 ACM |
864 | kmap = map__kmap(map); |
865 | map_groups__remove(&machine->kmaps, map); | |
ba92732e | 866 | if (kmap && kmap->ref_reloc_sym) { |
3f067dca ACM |
867 | /* |
868 | * ref_reloc_sym is shared among all maps, so free just | |
869 | * on one of them. | |
870 | */ | |
871 | if (type == MAP__FUNCTION) { | |
04662523 ACM |
872 | zfree((char **)&kmap->ref_reloc_sym->name); |
873 | zfree(&kmap->ref_reloc_sym); | |
874 | } else | |
875 | kmap->ref_reloc_sym = NULL; | |
3f067dca ACM |
876 | } |
877 | ||
e96e4078 | 878 | map__put(machine->vmlinux_maps[type]); |
3f067dca ACM |
879 | machine->vmlinux_maps[type] = NULL; |
880 | } | |
881 | } | |
882 | ||
876650e6 | 883 | int machines__create_guest_kernel_maps(struct machines *machines) |
3f067dca ACM |
884 | { |
885 | int ret = 0; | |
886 | struct dirent **namelist = NULL; | |
887 | int i, items = 0; | |
888 | char path[PATH_MAX]; | |
889 | pid_t pid; | |
890 | char *endp; | |
891 | ||
892 | if (symbol_conf.default_guest_vmlinux_name || | |
893 | symbol_conf.default_guest_modules || | |
894 | symbol_conf.default_guest_kallsyms) { | |
895 | machines__create_kernel_maps(machines, DEFAULT_GUEST_KERNEL_ID); | |
896 | } | |
897 | ||
898 | if (symbol_conf.guestmount) { | |
899 | items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL); | |
900 | if (items <= 0) | |
901 | return -ENOENT; | |
902 | for (i = 0; i < items; i++) { | |
903 | if (!isdigit(namelist[i]->d_name[0])) { | |
904 | /* Filter out . and .. */ | |
905 | continue; | |
906 | } | |
907 | pid = (pid_t)strtol(namelist[i]->d_name, &endp, 10); | |
908 | if ((*endp != '\0') || | |
909 | (endp == namelist[i]->d_name) || | |
910 | (errno == ERANGE)) { | |
911 | pr_debug("invalid directory (%s). Skipping.\n", | |
912 | namelist[i]->d_name); | |
913 | continue; | |
914 | } | |
915 | sprintf(path, "%s/%s/proc/kallsyms", | |
916 | symbol_conf.guestmount, | |
917 | namelist[i]->d_name); | |
918 | ret = access(path, R_OK); | |
919 | if (ret) { | |
920 | pr_debug("Can't access file %s\n", path); | |
921 | goto failure; | |
922 | } | |
923 | machines__create_kernel_maps(machines, pid); | |
924 | } | |
925 | failure: | |
926 | free(namelist); | |
927 | } | |
928 | ||
929 | return ret; | |
930 | } | |
931 | ||
876650e6 | 932 | void machines__destroy_kernel_maps(struct machines *machines) |
3f067dca | 933 | { |
876650e6 ACM |
934 | struct rb_node *next = rb_first(&machines->guests); |
935 | ||
936 | machine__destroy_kernel_maps(&machines->host); | |
3f067dca ACM |
937 | |
938 | while (next) { | |
939 | struct machine *pos = rb_entry(next, struct machine, rb_node); | |
940 | ||
941 | next = rb_next(&pos->rb_node); | |
876650e6 | 942 | rb_erase(&pos->rb_node, &machines->guests); |
3f067dca ACM |
943 | machine__delete(pos); |
944 | } | |
945 | } | |
946 | ||
876650e6 | 947 | int machines__create_kernel_maps(struct machines *machines, pid_t pid) |
3f067dca ACM |
948 | { |
949 | struct machine *machine = machines__findnew(machines, pid); | |
950 | ||
951 | if (machine == NULL) | |
952 | return -1; | |
953 | ||
954 | return machine__create_kernel_maps(machine); | |
955 | } | |
956 | ||
e02092b9 | 957 | int __machine__load_kallsyms(struct machine *machine, const char *filename, |
be39db9f | 958 | enum map_type type, bool no_kcore) |
3f067dca | 959 | { |
a5e813c6 | 960 | struct map *map = machine__kernel_map(machine); |
be39db9f | 961 | int ret = __dso__load_kallsyms(map->dso, filename, map, no_kcore); |
3f067dca ACM |
962 | |
963 | if (ret > 0) { | |
964 | dso__set_loaded(map->dso, type); | |
965 | /* | |
966 | * Since /proc/kallsyms will have multiple sessions for the | |
967 | * kernel, with modules between them, fixup the end of all | |
968 | * sections. | |
969 | */ | |
970 | __map_groups__fixup_end(&machine->kmaps, type); | |
971 | } | |
972 | ||
973 | return ret; | |
974 | } | |
975 | ||
e02092b9 | 976 | int machine__load_kallsyms(struct machine *machine, const char *filename, |
be39db9f | 977 | enum map_type type) |
e02092b9 | 978 | { |
be39db9f | 979 | return __machine__load_kallsyms(machine, filename, type, false); |
e02092b9 ACM |
980 | } |
981 | ||
be39db9f | 982 | int machine__load_vmlinux_path(struct machine *machine, enum map_type type) |
3f067dca | 983 | { |
a5e813c6 | 984 | struct map *map = machine__kernel_map(machine); |
be39db9f | 985 | int ret = dso__load_vmlinux_path(map->dso, map); |
3f067dca | 986 | |
39b12f78 | 987 | if (ret > 0) |
3f067dca | 988 | dso__set_loaded(map->dso, type); |
3f067dca ACM |
989 | |
990 | return ret; | |
991 | } | |
992 | ||
993 | static void map_groups__fixup_end(struct map_groups *mg) | |
994 | { | |
995 | int i; | |
996 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
997 | __map_groups__fixup_end(mg, i); | |
998 | } | |
999 | ||
1000 | static char *get_kernel_version(const char *root_dir) | |
1001 | { | |
1002 | char version[PATH_MAX]; | |
1003 | FILE *file; | |
1004 | char *name, *tmp; | |
1005 | const char *prefix = "Linux version "; | |
1006 | ||
1007 | sprintf(version, "%s/proc/version", root_dir); | |
1008 | file = fopen(version, "r"); | |
1009 | if (!file) | |
1010 | return NULL; | |
1011 | ||
1012 | version[0] = '\0'; | |
1013 | tmp = fgets(version, sizeof(version), file); | |
1014 | fclose(file); | |
1015 | ||
1016 | name = strstr(version, prefix); | |
1017 | if (!name) | |
1018 | return NULL; | |
1019 | name += strlen(prefix); | |
1020 | tmp = strchr(name, ' '); | |
1021 | if (tmp) | |
1022 | *tmp = '\0'; | |
1023 | ||
1024 | return strdup(name); | |
1025 | } | |
1026 | ||
bb58a8a4 JO |
1027 | static bool is_kmod_dso(struct dso *dso) |
1028 | { | |
1029 | return dso->symtab_type == DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE || | |
1030 | dso->symtab_type == DSO_BINARY_TYPE__GUEST_KMODULE; | |
1031 | } | |
1032 | ||
1033 | static int map_groups__set_module_path(struct map_groups *mg, const char *path, | |
1034 | struct kmod_path *m) | |
1035 | { | |
1036 | struct map *map; | |
1037 | char *long_name; | |
1038 | ||
1039 | map = map_groups__find_by_name(mg, MAP__FUNCTION, m->name); | |
1040 | if (map == NULL) | |
1041 | return 0; | |
1042 | ||
1043 | long_name = strdup(path); | |
1044 | if (long_name == NULL) | |
1045 | return -ENOMEM; | |
1046 | ||
1047 | dso__set_long_name(map->dso, long_name, true); | |
1048 | dso__kernel_module_get_build_id(map->dso, ""); | |
1049 | ||
1050 | /* | |
1051 | * Full name could reveal us kmod compression, so | |
1052 | * we need to update the symtab_type if needed. | |
1053 | */ | |
1054 | if (m->comp && is_kmod_dso(map->dso)) | |
1055 | map->dso->symtab_type++; | |
1056 | ||
1057 | return 0; | |
1058 | } | |
1059 | ||
3f067dca | 1060 | static int map_groups__set_modules_path_dir(struct map_groups *mg, |
61d4290c | 1061 | const char *dir_name, int depth) |
3f067dca ACM |
1062 | { |
1063 | struct dirent *dent; | |
1064 | DIR *dir = opendir(dir_name); | |
1065 | int ret = 0; | |
1066 | ||
1067 | if (!dir) { | |
1068 | pr_debug("%s: cannot open %s dir\n", __func__, dir_name); | |
1069 | return -1; | |
1070 | } | |
1071 | ||
1072 | while ((dent = readdir(dir)) != NULL) { | |
1073 | char path[PATH_MAX]; | |
1074 | struct stat st; | |
1075 | ||
1076 | /*sshfs might return bad dent->d_type, so we have to stat*/ | |
1077 | snprintf(path, sizeof(path), "%s/%s", dir_name, dent->d_name); | |
1078 | if (stat(path, &st)) | |
1079 | continue; | |
1080 | ||
1081 | if (S_ISDIR(st.st_mode)) { | |
1082 | if (!strcmp(dent->d_name, ".") || | |
1083 | !strcmp(dent->d_name, "..")) | |
1084 | continue; | |
1085 | ||
61d4290c RY |
1086 | /* Do not follow top-level source and build symlinks */ |
1087 | if (depth == 0) { | |
1088 | if (!strcmp(dent->d_name, "source") || | |
1089 | !strcmp(dent->d_name, "build")) | |
1090 | continue; | |
1091 | } | |
1092 | ||
1093 | ret = map_groups__set_modules_path_dir(mg, path, | |
1094 | depth + 1); | |
3f067dca ACM |
1095 | if (ret < 0) |
1096 | goto out; | |
1097 | } else { | |
bb58a8a4 | 1098 | struct kmod_path m; |
3f067dca | 1099 | |
bb58a8a4 JO |
1100 | ret = kmod_path__parse_name(&m, dent->d_name); |
1101 | if (ret) | |
1102 | goto out; | |
c00c48fc | 1103 | |
bb58a8a4 JO |
1104 | if (m.kmod) |
1105 | ret = map_groups__set_module_path(mg, path, &m); | |
c00c48fc | 1106 | |
bb58a8a4 | 1107 | free(m.name); |
3f067dca | 1108 | |
bb58a8a4 | 1109 | if (ret) |
3f067dca | 1110 | goto out; |
3f067dca ACM |
1111 | } |
1112 | } | |
1113 | ||
1114 | out: | |
1115 | closedir(dir); | |
1116 | return ret; | |
1117 | } | |
1118 | ||
1119 | static int machine__set_modules_path(struct machine *machine) | |
1120 | { | |
1121 | char *version; | |
1122 | char modules_path[PATH_MAX]; | |
1123 | ||
1124 | version = get_kernel_version(machine->root_dir); | |
1125 | if (!version) | |
1126 | return -1; | |
1127 | ||
61d4290c | 1128 | snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s", |
3f067dca ACM |
1129 | machine->root_dir, version); |
1130 | free(version); | |
1131 | ||
61d4290c | 1132 | return map_groups__set_modules_path_dir(&machine->kmaps, modules_path, 0); |
3f067dca | 1133 | } |
203d8a4a SSG |
1134 | int __weak arch__fix_module_text_start(u64 *start __maybe_unused, |
1135 | const char *name __maybe_unused) | |
1136 | { | |
1137 | return 0; | |
1138 | } | |
3f067dca | 1139 | |
316d70d6 | 1140 | static int machine__create_module(void *arg, const char *name, u64 start) |
3f067dca | 1141 | { |
316d70d6 | 1142 | struct machine *machine = arg; |
3f067dca | 1143 | struct map *map; |
316d70d6 | 1144 | |
203d8a4a SSG |
1145 | if (arch__fix_module_text_start(&start, name) < 0) |
1146 | return -1; | |
1147 | ||
9f2de315 | 1148 | map = machine__findnew_module_map(machine, start, name); |
316d70d6 AH |
1149 | if (map == NULL) |
1150 | return -1; | |
1151 | ||
1152 | dso__kernel_module_get_build_id(map->dso, machine->root_dir); | |
1153 | ||
1154 | return 0; | |
1155 | } | |
1156 | ||
1157 | static int machine__create_modules(struct machine *machine) | |
1158 | { | |
3f067dca ACM |
1159 | const char *modules; |
1160 | char path[PATH_MAX]; | |
1161 | ||
f4be904d | 1162 | if (machine__is_default_guest(machine)) { |
3f067dca | 1163 | modules = symbol_conf.default_guest_modules; |
f4be904d AH |
1164 | } else { |
1165 | snprintf(path, PATH_MAX, "%s/proc/modules", machine->root_dir); | |
3f067dca ACM |
1166 | modules = path; |
1167 | } | |
1168 | ||
aa7fe3b0 | 1169 | if (symbol__restricted_filename(modules, "/proc/modules")) |
3f067dca ACM |
1170 | return -1; |
1171 | ||
316d70d6 | 1172 | if (modules__parse(modules, machine, machine__create_module)) |
3f067dca ACM |
1173 | return -1; |
1174 | ||
316d70d6 AH |
1175 | if (!machine__set_modules_path(machine)) |
1176 | return 0; | |
3f067dca | 1177 | |
316d70d6 | 1178 | pr_debug("Problems setting modules path maps, continuing anyway...\n"); |
3f067dca | 1179 | |
8f76fcd9 | 1180 | return 0; |
3f067dca ACM |
1181 | } |
1182 | ||
1183 | int machine__create_kernel_maps(struct machine *machine) | |
1184 | { | |
1185 | struct dso *kernel = machine__get_kernel(machine); | |
b843f62a ACM |
1186 | const char *name = NULL; |
1187 | u64 addr = 0; | |
1154c957 MH |
1188 | int ret; |
1189 | ||
45e90056 | 1190 | if (kernel == NULL) |
5512cf24 | 1191 | return -1; |
3f067dca | 1192 | |
1154c957 MH |
1193 | ret = __machine__create_kernel_maps(machine, kernel); |
1194 | dso__put(kernel); | |
1195 | if (ret < 0) | |
3f067dca ACM |
1196 | return -1; |
1197 | ||
1198 | if (symbol_conf.use_modules && machine__create_modules(machine) < 0) { | |
1199 | if (machine__is_host(machine)) | |
1200 | pr_debug("Problems creating module maps, " | |
1201 | "continuing anyway...\n"); | |
1202 | else | |
1203 | pr_debug("Problems creating module maps for guest %d, " | |
1204 | "continuing anyway...\n", machine->pid); | |
1205 | } | |
1206 | ||
1207 | /* | |
1208 | * Now that we have all the maps created, just set the ->end of them: | |
1209 | */ | |
1210 | map_groups__fixup_end(&machine->kmaps); | |
5512cf24 | 1211 | |
3f938ee2 JO |
1212 | if (!machine__get_running_kernel_start(machine, &name, &addr)) { |
1213 | if (name && | |
1214 | maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, name, addr)) { | |
1215 | machine__destroy_kernel_maps(machine); | |
1216 | return -1; | |
1217 | } | |
5512cf24 AH |
1218 | } |
1219 | ||
3f067dca ACM |
1220 | return 0; |
1221 | } | |
1222 | ||
b0a7d1a0 ACM |
1223 | static void machine__set_kernel_mmap_len(struct machine *machine, |
1224 | union perf_event *event) | |
1225 | { | |
4552cf0f NK |
1226 | int i; |
1227 | ||
1228 | for (i = 0; i < MAP__NR_TYPES; i++) { | |
1229 | machine->vmlinux_maps[i]->start = event->mmap.start; | |
1230 | machine->vmlinux_maps[i]->end = (event->mmap.start + | |
1231 | event->mmap.len); | |
1232 | /* | |
1233 | * Be a bit paranoid here, some perf.data file came with | |
1234 | * a zero sized synthesized MMAP event for the kernel. | |
1235 | */ | |
1236 | if (machine->vmlinux_maps[i]->end == 0) | |
1237 | machine->vmlinux_maps[i]->end = ~0ULL; | |
1238 | } | |
b0a7d1a0 ACM |
1239 | } |
1240 | ||
8e0cf965 AH |
1241 | static bool machine__uses_kcore(struct machine *machine) |
1242 | { | |
1243 | struct dso *dso; | |
1244 | ||
3d39ac53 | 1245 | list_for_each_entry(dso, &machine->dsos.head, node) { |
8e0cf965 AH |
1246 | if (dso__is_kcore(dso)) |
1247 | return true; | |
1248 | } | |
1249 | ||
1250 | return false; | |
1251 | } | |
1252 | ||
b0a7d1a0 ACM |
1253 | static int machine__process_kernel_mmap_event(struct machine *machine, |
1254 | union perf_event *event) | |
1255 | { | |
1256 | struct map *map; | |
1257 | char kmmap_prefix[PATH_MAX]; | |
1258 | enum dso_kernel_type kernel_type; | |
1259 | bool is_kernel_mmap; | |
1260 | ||
8e0cf965 AH |
1261 | /* If we have maps from kcore then we do not need or want any others */ |
1262 | if (machine__uses_kcore(machine)) | |
1263 | return 0; | |
1264 | ||
b0a7d1a0 ACM |
1265 | machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix)); |
1266 | if (machine__is_host(machine)) | |
1267 | kernel_type = DSO_TYPE_KERNEL; | |
1268 | else | |
1269 | kernel_type = DSO_TYPE_GUEST_KERNEL; | |
1270 | ||
1271 | is_kernel_mmap = memcmp(event->mmap.filename, | |
1272 | kmmap_prefix, | |
1273 | strlen(kmmap_prefix) - 1) == 0; | |
1274 | if (event->mmap.filename[0] == '/' || | |
1275 | (!is_kernel_mmap && event->mmap.filename[0] == '[')) { | |
9f2de315 ACM |
1276 | map = machine__findnew_module_map(machine, event->mmap.start, |
1277 | event->mmap.filename); | |
b0a7d1a0 ACM |
1278 | if (map == NULL) |
1279 | goto out_problem; | |
1280 | ||
b0a7d1a0 ACM |
1281 | map->end = map->start + event->mmap.len; |
1282 | } else if (is_kernel_mmap) { | |
1283 | const char *symbol_name = (event->mmap.filename + | |
1284 | strlen(kmmap_prefix)); | |
1285 | /* | |
1286 | * Should be there already, from the build-id table in | |
1287 | * the header. | |
1288 | */ | |
b837a8bd NK |
1289 | struct dso *kernel = NULL; |
1290 | struct dso *dso; | |
1291 | ||
e8807844 ACM |
1292 | pthread_rwlock_rdlock(&machine->dsos.lock); |
1293 | ||
3d39ac53 | 1294 | list_for_each_entry(dso, &machine->dsos.head, node) { |
1f121b03 WN |
1295 | |
1296 | /* | |
1297 | * The cpumode passed to is_kernel_module is not the | |
1298 | * cpumode of *this* event. If we insist on passing | |
1299 | * correct cpumode to is_kernel_module, we should | |
1300 | * record the cpumode when we adding this dso to the | |
1301 | * linked list. | |
1302 | * | |
1303 | * However we don't really need passing correct | |
1304 | * cpumode. We know the correct cpumode must be kernel | |
1305 | * mode (if not, we should not link it onto kernel_dsos | |
1306 | * list). | |
1307 | * | |
1308 | * Therefore, we pass PERF_RECORD_MISC_CPUMODE_UNKNOWN. | |
1309 | * is_kernel_module() treats it as a kernel cpumode. | |
1310 | */ | |
1311 | ||
1312 | if (!dso->kernel || | |
1313 | is_kernel_module(dso->long_name, | |
1314 | PERF_RECORD_MISC_CPUMODE_UNKNOWN)) | |
b837a8bd NK |
1315 | continue; |
1316 | ||
1f121b03 | 1317 | |
b837a8bd NK |
1318 | kernel = dso; |
1319 | break; | |
1320 | } | |
1321 | ||
e8807844 ACM |
1322 | pthread_rwlock_unlock(&machine->dsos.lock); |
1323 | ||
b837a8bd | 1324 | if (kernel == NULL) |
aa7cc2ae | 1325 | kernel = machine__findnew_dso(machine, kmmap_prefix); |
b0a7d1a0 ACM |
1326 | if (kernel == NULL) |
1327 | goto out_problem; | |
1328 | ||
1329 | kernel->kernel = kernel_type; | |
d3a7c489 ACM |
1330 | if (__machine__create_kernel_maps(machine, kernel) < 0) { |
1331 | dso__put(kernel); | |
b0a7d1a0 | 1332 | goto out_problem; |
d3a7c489 | 1333 | } |
b0a7d1a0 | 1334 | |
330dfa22 NK |
1335 | if (strstr(kernel->long_name, "vmlinux")) |
1336 | dso__set_short_name(kernel, "[kernel.vmlinux]", false); | |
96d78059 | 1337 | |
b0a7d1a0 ACM |
1338 | machine__set_kernel_mmap_len(machine, event); |
1339 | ||
1340 | /* | |
1341 | * Avoid using a zero address (kptr_restrict) for the ref reloc | |
1342 | * symbol. Effectively having zero here means that at record | |
1343 | * time /proc/sys/kernel/kptr_restrict was non zero. | |
1344 | */ | |
1345 | if (event->mmap.pgoff != 0) { | |
1346 | maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, | |
1347 | symbol_name, | |
1348 | event->mmap.pgoff); | |
1349 | } | |
1350 | ||
1351 | if (machine__is_default_guest(machine)) { | |
1352 | /* | |
1353 | * preload dso of guest kernel and modules | |
1354 | */ | |
be39db9f | 1355 | dso__load(kernel, machine__kernel_map(machine)); |
b0a7d1a0 ACM |
1356 | } |
1357 | } | |
1358 | return 0; | |
1359 | out_problem: | |
1360 | return -1; | |
1361 | } | |
1362 | ||
5c5e854b | 1363 | int machine__process_mmap2_event(struct machine *machine, |
162f0bef | 1364 | union perf_event *event, |
473398a2 | 1365 | struct perf_sample *sample) |
5c5e854b | 1366 | { |
5c5e854b SE |
1367 | struct thread *thread; |
1368 | struct map *map; | |
1369 | enum map_type type; | |
1370 | int ret = 0; | |
1371 | ||
1372 | if (dump_trace) | |
1373 | perf_event__fprintf_mmap2(event, stdout); | |
1374 | ||
473398a2 ACM |
1375 | if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL || |
1376 | sample->cpumode == PERF_RECORD_MISC_KERNEL) { | |
5c5e854b SE |
1377 | ret = machine__process_kernel_mmap_event(machine, event); |
1378 | if (ret < 0) | |
1379 | goto out_problem; | |
1380 | return 0; | |
1381 | } | |
1382 | ||
1383 | thread = machine__findnew_thread(machine, event->mmap2.pid, | |
11c9abf2 | 1384 | event->mmap2.tid); |
5c5e854b SE |
1385 | if (thread == NULL) |
1386 | goto out_problem; | |
1387 | ||
1388 | if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) | |
1389 | type = MAP__VARIABLE; | |
1390 | else | |
1391 | type = MAP__FUNCTION; | |
1392 | ||
2a03068c | 1393 | map = map__new(machine, event->mmap2.start, |
5c5e854b SE |
1394 | event->mmap2.len, event->mmap2.pgoff, |
1395 | event->mmap2.pid, event->mmap2.maj, | |
1396 | event->mmap2.min, event->mmap2.ino, | |
1397 | event->mmap2.ino_generation, | |
7ef80703 DZ |
1398 | event->mmap2.prot, |
1399 | event->mmap2.flags, | |
5835edda | 1400 | event->mmap2.filename, type, thread); |
5c5e854b SE |
1401 | |
1402 | if (map == NULL) | |
b91fc39f | 1403 | goto out_problem_map; |
5c5e854b | 1404 | |
8132a2a8 HK |
1405 | ret = thread__insert_map(thread, map); |
1406 | if (ret) | |
1407 | goto out_problem_insert; | |
1408 | ||
b91fc39f | 1409 | thread__put(thread); |
84c2cafa | 1410 | map__put(map); |
5c5e854b SE |
1411 | return 0; |
1412 | ||
8132a2a8 HK |
1413 | out_problem_insert: |
1414 | map__put(map); | |
b91fc39f ACM |
1415 | out_problem_map: |
1416 | thread__put(thread); | |
5c5e854b SE |
1417 | out_problem: |
1418 | dump_printf("problem processing PERF_RECORD_MMAP2, skipping event.\n"); | |
1419 | return 0; | |
1420 | } | |
1421 | ||
162f0bef | 1422 | int machine__process_mmap_event(struct machine *machine, union perf_event *event, |
473398a2 | 1423 | struct perf_sample *sample) |
b0a7d1a0 | 1424 | { |
b0a7d1a0 ACM |
1425 | struct thread *thread; |
1426 | struct map *map; | |
bad40917 | 1427 | enum map_type type; |
b0a7d1a0 ACM |
1428 | int ret = 0; |
1429 | ||
1430 | if (dump_trace) | |
1431 | perf_event__fprintf_mmap(event, stdout); | |
1432 | ||
473398a2 ACM |
1433 | if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL || |
1434 | sample->cpumode == PERF_RECORD_MISC_KERNEL) { | |
b0a7d1a0 ACM |
1435 | ret = machine__process_kernel_mmap_event(machine, event); |
1436 | if (ret < 0) | |
1437 | goto out_problem; | |
1438 | return 0; | |
1439 | } | |
1440 | ||
314add6b | 1441 | thread = machine__findnew_thread(machine, event->mmap.pid, |
11c9abf2 | 1442 | event->mmap.tid); |
b0a7d1a0 ACM |
1443 | if (thread == NULL) |
1444 | goto out_problem; | |
bad40917 SE |
1445 | |
1446 | if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) | |
1447 | type = MAP__VARIABLE; | |
1448 | else | |
1449 | type = MAP__FUNCTION; | |
1450 | ||
2a03068c | 1451 | map = map__new(machine, event->mmap.start, |
b0a7d1a0 | 1452 | event->mmap.len, event->mmap.pgoff, |
7ef80703 | 1453 | event->mmap.pid, 0, 0, 0, 0, 0, 0, |
5c5e854b | 1454 | event->mmap.filename, |
5835edda | 1455 | type, thread); |
bad40917 | 1456 | |
b0a7d1a0 | 1457 | if (map == NULL) |
b91fc39f | 1458 | goto out_problem_map; |
b0a7d1a0 | 1459 | |
8132a2a8 HK |
1460 | ret = thread__insert_map(thread, map); |
1461 | if (ret) | |
1462 | goto out_problem_insert; | |
1463 | ||
b91fc39f | 1464 | thread__put(thread); |
84c2cafa | 1465 | map__put(map); |
b0a7d1a0 ACM |
1466 | return 0; |
1467 | ||
8132a2a8 HK |
1468 | out_problem_insert: |
1469 | map__put(map); | |
b91fc39f ACM |
1470 | out_problem_map: |
1471 | thread__put(thread); | |
b0a7d1a0 ACM |
1472 | out_problem: |
1473 | dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); | |
1474 | return 0; | |
1475 | } | |
1476 | ||
b91fc39f | 1477 | static void __machine__remove_thread(struct machine *machine, struct thread *th, bool lock) |
236a3bbd | 1478 | { |
f3b623b8 | 1479 | if (machine->last_match == th) |
0ceb8f6e | 1480 | machine->last_match = NULL; |
f3b623b8 | 1481 | |
e34f5b11 | 1482 | BUG_ON(refcount_read(&th->refcnt) == 0); |
b91fc39f ACM |
1483 | if (lock) |
1484 | pthread_rwlock_wrlock(&machine->threads_lock); | |
0170b14f | 1485 | rb_erase_init(&th->rb_node, &machine->threads); |
b91fc39f | 1486 | RB_CLEAR_NODE(&th->rb_node); |
d2c11034 | 1487 | --machine->nr_threads; |
236a3bbd | 1488 | /* |
f3b623b8 ACM |
1489 | * Move it first to the dead_threads list, then drop the reference, |
1490 | * if this is the last reference, then the thread__delete destructor | |
1491 | * will be called and we will remove it from the dead_threads list. | |
236a3bbd DA |
1492 | */ |
1493 | list_add_tail(&th->node, &machine->dead_threads); | |
b91fc39f ACM |
1494 | if (lock) |
1495 | pthread_rwlock_unlock(&machine->threads_lock); | |
f3b623b8 | 1496 | thread__put(th); |
236a3bbd DA |
1497 | } |
1498 | ||
b91fc39f ACM |
1499 | void machine__remove_thread(struct machine *machine, struct thread *th) |
1500 | { | |
1501 | return __machine__remove_thread(machine, th, true); | |
1502 | } | |
1503 | ||
162f0bef FW |
1504 | int machine__process_fork_event(struct machine *machine, union perf_event *event, |
1505 | struct perf_sample *sample) | |
b0a7d1a0 | 1506 | { |
d75e6097 JO |
1507 | struct thread *thread = machine__find_thread(machine, |
1508 | event->fork.pid, | |
1509 | event->fork.tid); | |
314add6b AH |
1510 | struct thread *parent = machine__findnew_thread(machine, |
1511 | event->fork.ppid, | |
1512 | event->fork.ptid); | |
b91fc39f | 1513 | int err = 0; |
b0a7d1a0 | 1514 | |
5cb73340 AH |
1515 | if (dump_trace) |
1516 | perf_event__fprintf_task(event, stdout); | |
1517 | ||
1518 | /* | |
1519 | * There may be an existing thread that is not actually the parent, | |
1520 | * either because we are processing events out of order, or because the | |
1521 | * (fork) event that would have removed the thread was lost. Assume the | |
1522 | * latter case and continue on as best we can. | |
1523 | */ | |
1524 | if (parent->pid_ != (pid_t)event->fork.ppid) { | |
1525 | dump_printf("removing erroneous parent thread %d/%d\n", | |
1526 | parent->pid_, parent->tid); | |
1527 | machine__remove_thread(machine, parent); | |
1528 | thread__put(parent); | |
1529 | parent = machine__findnew_thread(machine, event->fork.ppid, | |
1530 | event->fork.ptid); | |
1531 | } | |
1532 | ||
236a3bbd | 1533 | /* if a thread currently exists for the thread id remove it */ |
b91fc39f | 1534 | if (thread != NULL) { |
236a3bbd | 1535 | machine__remove_thread(machine, thread); |
b91fc39f ACM |
1536 | thread__put(thread); |
1537 | } | |
236a3bbd | 1538 | |
314add6b AH |
1539 | thread = machine__findnew_thread(machine, event->fork.pid, |
1540 | event->fork.tid); | |
b0a7d1a0 ACM |
1541 | |
1542 | if (thread == NULL || parent == NULL || | |
162f0bef | 1543 | thread__fork(thread, parent, sample->time) < 0) { |
b0a7d1a0 | 1544 | dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); |
b91fc39f | 1545 | err = -1; |
b0a7d1a0 | 1546 | } |
b91fc39f ACM |
1547 | thread__put(thread); |
1548 | thread__put(parent); | |
b0a7d1a0 | 1549 | |
b91fc39f | 1550 | return err; |
b0a7d1a0 ACM |
1551 | } |
1552 | ||
162f0bef FW |
1553 | int machine__process_exit_event(struct machine *machine, union perf_event *event, |
1554 | struct perf_sample *sample __maybe_unused) | |
b0a7d1a0 | 1555 | { |
d75e6097 JO |
1556 | struct thread *thread = machine__find_thread(machine, |
1557 | event->fork.pid, | |
1558 | event->fork.tid); | |
b0a7d1a0 ACM |
1559 | |
1560 | if (dump_trace) | |
1561 | perf_event__fprintf_task(event, stdout); | |
1562 | ||
b91fc39f | 1563 | if (thread != NULL) { |
236a3bbd | 1564 | thread__exited(thread); |
b91fc39f ACM |
1565 | thread__put(thread); |
1566 | } | |
b0a7d1a0 ACM |
1567 | |
1568 | return 0; | |
1569 | } | |
1570 | ||
162f0bef FW |
1571 | int machine__process_event(struct machine *machine, union perf_event *event, |
1572 | struct perf_sample *sample) | |
b0a7d1a0 ACM |
1573 | { |
1574 | int ret; | |
1575 | ||
1576 | switch (event->header.type) { | |
1577 | case PERF_RECORD_COMM: | |
162f0bef | 1578 | ret = machine__process_comm_event(machine, event, sample); break; |
b0a7d1a0 | 1579 | case PERF_RECORD_MMAP: |
162f0bef | 1580 | ret = machine__process_mmap_event(machine, event, sample); break; |
f3b3614a HB |
1581 | case PERF_RECORD_NAMESPACES: |
1582 | ret = machine__process_namespaces_event(machine, event, sample); break; | |
5c5e854b | 1583 | case PERF_RECORD_MMAP2: |
162f0bef | 1584 | ret = machine__process_mmap2_event(machine, event, sample); break; |
b0a7d1a0 | 1585 | case PERF_RECORD_FORK: |
162f0bef | 1586 | ret = machine__process_fork_event(machine, event, sample); break; |
b0a7d1a0 | 1587 | case PERF_RECORD_EXIT: |
162f0bef | 1588 | ret = machine__process_exit_event(machine, event, sample); break; |
b0a7d1a0 | 1589 | case PERF_RECORD_LOST: |
162f0bef | 1590 | ret = machine__process_lost_event(machine, event, sample); break; |
4a96f7a0 AH |
1591 | case PERF_RECORD_AUX: |
1592 | ret = machine__process_aux_event(machine, event); break; | |
0ad21f68 | 1593 | case PERF_RECORD_ITRACE_START: |
ceb92913 | 1594 | ret = machine__process_itrace_start_event(machine, event); break; |
c4937a91 KL |
1595 | case PERF_RECORD_LOST_SAMPLES: |
1596 | ret = machine__process_lost_samples_event(machine, event, sample); break; | |
0286039f AH |
1597 | case PERF_RECORD_SWITCH: |
1598 | case PERF_RECORD_SWITCH_CPU_WIDE: | |
1599 | ret = machine__process_switch_event(machine, event); break; | |
b0a7d1a0 ACM |
1600 | default: |
1601 | ret = -1; | |
1602 | break; | |
1603 | } | |
1604 | ||
1605 | return ret; | |
1606 | } | |
3f067dca | 1607 | |
b21484f1 | 1608 | static bool symbol__match_regex(struct symbol *sym, regex_t *regex) |
3f067dca | 1609 | { |
a7c3899c | 1610 | if (!regexec(regex, sym->name, 0, NULL, 0)) |
3f067dca | 1611 | return 1; |
3f067dca ACM |
1612 | return 0; |
1613 | } | |
1614 | ||
bb871a9c | 1615 | static void ip__resolve_ams(struct thread *thread, |
3f067dca ACM |
1616 | struct addr_map_symbol *ams, |
1617 | u64 ip) | |
1618 | { | |
1619 | struct addr_location al; | |
3f067dca ACM |
1620 | |
1621 | memset(&al, 0, sizeof(al)); | |
52a3cb8c ACM |
1622 | /* |
1623 | * We cannot use the header.misc hint to determine whether a | |
1624 | * branch stack address is user, kernel, guest, hypervisor. | |
1625 | * Branches may straddle the kernel/user/hypervisor boundaries. | |
1626 | * Thus, we have to try consecutively until we find a match | |
1627 | * or else, the symbol is unknown | |
1628 | */ | |
bb871a9c | 1629 | thread__find_cpumode_addr_location(thread, MAP__FUNCTION, ip, &al); |
3f067dca | 1630 | |
3f067dca ACM |
1631 | ams->addr = ip; |
1632 | ams->al_addr = al.addr; | |
1633 | ams->sym = al.sym; | |
1634 | ams->map = al.map; | |
1635 | } | |
1636 | ||
bb871a9c | 1637 | static void ip__resolve_data(struct thread *thread, |
98a3b32c SE |
1638 | u8 m, struct addr_map_symbol *ams, u64 addr) |
1639 | { | |
1640 | struct addr_location al; | |
1641 | ||
1642 | memset(&al, 0, sizeof(al)); | |
1643 | ||
bb871a9c | 1644 | thread__find_addr_location(thread, m, MAP__VARIABLE, addr, &al); |
06b2afc0 DZ |
1645 | if (al.map == NULL) { |
1646 | /* | |
1647 | * some shared data regions have execute bit set which puts | |
1648 | * their mapping in the MAP__FUNCTION type array. | |
1649 | * Check there as a fallback option before dropping the sample. | |
1650 | */ | |
bb871a9c | 1651 | thread__find_addr_location(thread, m, MAP__FUNCTION, addr, &al); |
06b2afc0 DZ |
1652 | } |
1653 | ||
98a3b32c SE |
1654 | ams->addr = addr; |
1655 | ams->al_addr = al.addr; | |
1656 | ams->sym = al.sym; | |
1657 | ams->map = al.map; | |
1658 | } | |
1659 | ||
e80faac0 ACM |
1660 | struct mem_info *sample__resolve_mem(struct perf_sample *sample, |
1661 | struct addr_location *al) | |
98a3b32c SE |
1662 | { |
1663 | struct mem_info *mi = zalloc(sizeof(*mi)); | |
1664 | ||
1665 | if (!mi) | |
1666 | return NULL; | |
1667 | ||
bb871a9c ACM |
1668 | ip__resolve_ams(al->thread, &mi->iaddr, sample->ip); |
1669 | ip__resolve_data(al->thread, al->cpumode, &mi->daddr, sample->addr); | |
98a3b32c SE |
1670 | mi->data_src.val = sample->data_src; |
1671 | ||
1672 | return mi; | |
1673 | } | |
1674 | ||
37592b8a | 1675 | static int add_callchain_ip(struct thread *thread, |
91d7b2de | 1676 | struct callchain_cursor *cursor, |
37592b8a AK |
1677 | struct symbol **parent, |
1678 | struct addr_location *root_al, | |
73dbcd65 | 1679 | u8 *cpumode, |
410024db JY |
1680 | u64 ip, |
1681 | bool branch, | |
1682 | struct branch_flags *flags, | |
1683 | int nr_loop_iter, | |
1684 | int samples) | |
37592b8a AK |
1685 | { |
1686 | struct addr_location al; | |
1687 | ||
1688 | al.filtered = 0; | |
1689 | al.sym = NULL; | |
73dbcd65 | 1690 | if (!cpumode) { |
8b7bad58 AK |
1691 | thread__find_cpumode_addr_location(thread, MAP__FUNCTION, |
1692 | ip, &al); | |
73dbcd65 | 1693 | } else { |
2e77784b KL |
1694 | if (ip >= PERF_CONTEXT_MAX) { |
1695 | switch (ip) { | |
1696 | case PERF_CONTEXT_HV: | |
73dbcd65 | 1697 | *cpumode = PERF_RECORD_MISC_HYPERVISOR; |
2e77784b KL |
1698 | break; |
1699 | case PERF_CONTEXT_KERNEL: | |
73dbcd65 | 1700 | *cpumode = PERF_RECORD_MISC_KERNEL; |
2e77784b KL |
1701 | break; |
1702 | case PERF_CONTEXT_USER: | |
73dbcd65 | 1703 | *cpumode = PERF_RECORD_MISC_USER; |
2e77784b KL |
1704 | break; |
1705 | default: | |
1706 | pr_debug("invalid callchain context: " | |
1707 | "%"PRId64"\n", (s64) ip); | |
1708 | /* | |
1709 | * It seems the callchain is corrupted. | |
1710 | * Discard all. | |
1711 | */ | |
91d7b2de | 1712 | callchain_cursor_reset(cursor); |
2e77784b KL |
1713 | return 1; |
1714 | } | |
1715 | return 0; | |
1716 | } | |
73dbcd65 DH |
1717 | thread__find_addr_location(thread, *cpumode, MAP__FUNCTION, |
1718 | ip, &al); | |
2e77784b KL |
1719 | } |
1720 | ||
37592b8a | 1721 | if (al.sym != NULL) { |
de7e6a7c | 1722 | if (perf_hpp_list.parent && !*parent && |
37592b8a AK |
1723 | symbol__match_regex(al.sym, &parent_regex)) |
1724 | *parent = al.sym; | |
1725 | else if (have_ignore_callees && root_al && | |
1726 | symbol__match_regex(al.sym, &ignore_callees_regex)) { | |
1727 | /* Treat this symbol as the root, | |
1728 | forgetting its callees. */ | |
1729 | *root_al = al; | |
91d7b2de | 1730 | callchain_cursor_reset(cursor); |
37592b8a AK |
1731 | } |
1732 | } | |
1733 | ||
b49a8fe5 NK |
1734 | if (symbol_conf.hide_unresolved && al.sym == NULL) |
1735 | return 0; | |
410024db JY |
1736 | return callchain_cursor_append(cursor, al.addr, al.map, al.sym, |
1737 | branch, flags, nr_loop_iter, samples); | |
37592b8a AK |
1738 | } |
1739 | ||
644f2df2 ACM |
1740 | struct branch_info *sample__resolve_bstack(struct perf_sample *sample, |
1741 | struct addr_location *al) | |
3f067dca | 1742 | { |
3f067dca | 1743 | unsigned int i; |
644f2df2 ACM |
1744 | const struct branch_stack *bs = sample->branch_stack; |
1745 | struct branch_info *bi = calloc(bs->nr, sizeof(struct branch_info)); | |
3f067dca | 1746 | |
3f067dca ACM |
1747 | if (!bi) |
1748 | return NULL; | |
1749 | ||
1750 | for (i = 0; i < bs->nr; i++) { | |
bb871a9c ACM |
1751 | ip__resolve_ams(al->thread, &bi[i].to, bs->entries[i].to); |
1752 | ip__resolve_ams(al->thread, &bi[i].from, bs->entries[i].from); | |
3f067dca ACM |
1753 | bi[i].flags = bs->entries[i].flags; |
1754 | } | |
1755 | return bi; | |
1756 | } | |
1757 | ||
8b7bad58 AK |
1758 | #define CHASHSZ 127 |
1759 | #define CHASHBITS 7 | |
1760 | #define NO_ENTRY 0xff | |
1761 | ||
1762 | #define PERF_MAX_BRANCH_DEPTH 127 | |
1763 | ||
1764 | /* Remove loops. */ | |
1765 | static int remove_loops(struct branch_entry *l, int nr) | |
1766 | { | |
1767 | int i, j, off; | |
1768 | unsigned char chash[CHASHSZ]; | |
1769 | ||
1770 | memset(chash, NO_ENTRY, sizeof(chash)); | |
1771 | ||
1772 | BUG_ON(PERF_MAX_BRANCH_DEPTH > 255); | |
1773 | ||
1774 | for (i = 0; i < nr; i++) { | |
1775 | int h = hash_64(l[i].from, CHASHBITS) % CHASHSZ; | |
1776 | ||
1777 | /* no collision handling for now */ | |
1778 | if (chash[h] == NO_ENTRY) { | |
1779 | chash[h] = i; | |
1780 | } else if (l[chash[h]].from == l[i].from) { | |
1781 | bool is_loop = true; | |
1782 | /* check if it is a real loop */ | |
1783 | off = 0; | |
1784 | for (j = chash[h]; j < i && i + off < nr; j++, off++) | |
1785 | if (l[j].from != l[i + off].from) { | |
1786 | is_loop = false; | |
1787 | break; | |
1788 | } | |
1789 | if (is_loop) { | |
1790 | memmove(l + i, l + i + off, | |
1791 | (nr - (i + off)) * sizeof(*l)); | |
1792 | nr -= off; | |
1793 | } | |
1794 | } | |
1795 | } | |
1796 | return nr; | |
1797 | } | |
1798 | ||
384b6055 KL |
1799 | /* |
1800 | * Recolve LBR callstack chain sample | |
1801 | * Return: | |
1802 | * 1 on success get LBR callchain information | |
1803 | * 0 no available LBR callchain information, should try fp | |
1804 | * negative error code on other errors. | |
1805 | */ | |
1806 | static int resolve_lbr_callchain_sample(struct thread *thread, | |
91d7b2de | 1807 | struct callchain_cursor *cursor, |
384b6055 KL |
1808 | struct perf_sample *sample, |
1809 | struct symbol **parent, | |
1810 | struct addr_location *root_al, | |
1811 | int max_stack) | |
3f067dca | 1812 | { |
384b6055 | 1813 | struct ip_callchain *chain = sample->callchain; |
18ef15c6 | 1814 | int chain_nr = min(max_stack, (int)chain->nr), i; |
73dbcd65 | 1815 | u8 cpumode = PERF_RECORD_MISC_USER; |
384b6055 KL |
1816 | u64 ip; |
1817 | ||
1818 | for (i = 0; i < chain_nr; i++) { | |
1819 | if (chain->ips[i] == PERF_CONTEXT_USER) | |
1820 | break; | |
1821 | } | |
1822 | ||
1823 | /* LBR only affects the user callchain */ | |
1824 | if (i != chain_nr) { | |
1825 | struct branch_stack *lbr_stack = sample->branch_stack; | |
410024db JY |
1826 | int lbr_nr = lbr_stack->nr, j, k; |
1827 | bool branch; | |
1828 | struct branch_flags *flags; | |
384b6055 KL |
1829 | /* |
1830 | * LBR callstack can only get user call chain. | |
1831 | * The mix_chain_nr is kernel call chain | |
1832 | * number plus LBR user call chain number. | |
1833 | * i is kernel call chain number, | |
1834 | * 1 is PERF_CONTEXT_USER, | |
1835 | * lbr_nr + 1 is the user call chain number. | |
1836 | * For details, please refer to the comments | |
1837 | * in callchain__printf | |
1838 | */ | |
1839 | int mix_chain_nr = i + 1 + lbr_nr + 1; | |
1840 | ||
384b6055 | 1841 | for (j = 0; j < mix_chain_nr; j++) { |
18ef15c6 | 1842 | int err; |
410024db JY |
1843 | branch = false; |
1844 | flags = NULL; | |
1845 | ||
384b6055 KL |
1846 | if (callchain_param.order == ORDER_CALLEE) { |
1847 | if (j < i + 1) | |
1848 | ip = chain->ips[j]; | |
410024db JY |
1849 | else if (j > i + 1) { |
1850 | k = j - i - 2; | |
1851 | ip = lbr_stack->entries[k].from; | |
1852 | branch = true; | |
1853 | flags = &lbr_stack->entries[k].flags; | |
1854 | } else { | |
384b6055 | 1855 | ip = lbr_stack->entries[0].to; |
410024db JY |
1856 | branch = true; |
1857 | flags = &lbr_stack->entries[0].flags; | |
1858 | } | |
384b6055 | 1859 | } else { |
410024db JY |
1860 | if (j < lbr_nr) { |
1861 | k = lbr_nr - j - 1; | |
1862 | ip = lbr_stack->entries[k].from; | |
1863 | branch = true; | |
1864 | flags = &lbr_stack->entries[k].flags; | |
1865 | } | |
384b6055 KL |
1866 | else if (j > lbr_nr) |
1867 | ip = chain->ips[i + 1 - (j - lbr_nr)]; | |
410024db | 1868 | else { |
384b6055 | 1869 | ip = lbr_stack->entries[0].to; |
410024db JY |
1870 | branch = true; |
1871 | flags = &lbr_stack->entries[0].flags; | |
1872 | } | |
384b6055 KL |
1873 | } |
1874 | ||
410024db JY |
1875 | err = add_callchain_ip(thread, cursor, parent, |
1876 | root_al, &cpumode, ip, | |
1877 | branch, flags, 0, 0); | |
384b6055 KL |
1878 | if (err) |
1879 | return (err < 0) ? err : 0; | |
1880 | } | |
1881 | return 1; | |
1882 | } | |
1883 | ||
1884 | return 0; | |
1885 | } | |
1886 | ||
1887 | static int thread__resolve_callchain_sample(struct thread *thread, | |
91d7b2de | 1888 | struct callchain_cursor *cursor, |
384b6055 KL |
1889 | struct perf_evsel *evsel, |
1890 | struct perf_sample *sample, | |
1891 | struct symbol **parent, | |
1892 | struct addr_location *root_al, | |
1893 | int max_stack) | |
1894 | { | |
1895 | struct branch_stack *branch = sample->branch_stack; | |
1896 | struct ip_callchain *chain = sample->callchain; | |
a29d5c9b | 1897 | int chain_nr = chain->nr; |
73dbcd65 | 1898 | u8 cpumode = PERF_RECORD_MISC_USER; |
bf8bddbf | 1899 | int i, j, err, nr_entries; |
8b7bad58 AK |
1900 | int skip_idx = -1; |
1901 | int first_call = 0; | |
410024db | 1902 | int nr_loop_iter; |
8b7bad58 | 1903 | |
acf2abbd | 1904 | if (perf_evsel__has_branch_callstack(evsel)) { |
91d7b2de | 1905 | err = resolve_lbr_callchain_sample(thread, cursor, sample, parent, |
384b6055 KL |
1906 | root_al, max_stack); |
1907 | if (err) | |
1908 | return (err < 0) ? err : 0; | |
1909 | } | |
1910 | ||
8b7bad58 AK |
1911 | /* |
1912 | * Based on DWARF debug information, some architectures skip | |
1913 | * a callchain entry saved by the kernel. | |
1914 | */ | |
bf8bddbf | 1915 | skip_idx = arch_skip_callchain_idx(thread, chain); |
3f067dca | 1916 | |
8b7bad58 AK |
1917 | /* |
1918 | * Add branches to call stack for easier browsing. This gives | |
1919 | * more context for a sample than just the callers. | |
1920 | * | |
1921 | * This uses individual histograms of paths compared to the | |
1922 | * aggregated histograms the normal LBR mode uses. | |
1923 | * | |
1924 | * Limitations for now: | |
1925 | * - No extra filters | |
1926 | * - No annotations (should annotate somehow) | |
1927 | */ | |
1928 | ||
1929 | if (branch && callchain_param.branch_callstack) { | |
1930 | int nr = min(max_stack, (int)branch->nr); | |
1931 | struct branch_entry be[nr]; | |
1932 | ||
1933 | if (branch->nr > PERF_MAX_BRANCH_DEPTH) { | |
1934 | pr_warning("corrupted branch chain. skipping...\n"); | |
1935 | goto check_calls; | |
1936 | } | |
1937 | ||
1938 | for (i = 0; i < nr; i++) { | |
1939 | if (callchain_param.order == ORDER_CALLEE) { | |
1940 | be[i] = branch->entries[i]; | |
1941 | /* | |
1942 | * Check for overlap into the callchain. | |
1943 | * The return address is one off compared to | |
1944 | * the branch entry. To adjust for this | |
1945 | * assume the calling instruction is not longer | |
1946 | * than 8 bytes. | |
1947 | */ | |
1948 | if (i == skip_idx || | |
1949 | chain->ips[first_call] >= PERF_CONTEXT_MAX) | |
1950 | first_call++; | |
1951 | else if (be[i].from < chain->ips[first_call] && | |
1952 | be[i].from >= chain->ips[first_call] - 8) | |
1953 | first_call++; | |
1954 | } else | |
1955 | be[i] = branch->entries[branch->nr - i - 1]; | |
1956 | } | |
1957 | ||
410024db | 1958 | nr_loop_iter = nr; |
8b7bad58 AK |
1959 | nr = remove_loops(be, nr); |
1960 | ||
410024db JY |
1961 | /* |
1962 | * Get the number of iterations. | |
1963 | * It's only approximation, but good enough in practice. | |
1964 | */ | |
1965 | if (nr_loop_iter > nr) | |
1966 | nr_loop_iter = nr_loop_iter - nr + 1; | |
1967 | else | |
1968 | nr_loop_iter = 0; | |
1969 | ||
8b7bad58 | 1970 | for (i = 0; i < nr; i++) { |
410024db JY |
1971 | if (i == nr - 1) |
1972 | err = add_callchain_ip(thread, cursor, parent, | |
1973 | root_al, | |
1974 | NULL, be[i].to, | |
1975 | true, &be[i].flags, | |
1976 | nr_loop_iter, 1); | |
1977 | else | |
1978 | err = add_callchain_ip(thread, cursor, parent, | |
1979 | root_al, | |
1980 | NULL, be[i].to, | |
1981 | true, &be[i].flags, | |
1982 | 0, 0); | |
1983 | ||
8b7bad58 | 1984 | if (!err) |
91d7b2de | 1985 | err = add_callchain_ip(thread, cursor, parent, root_al, |
410024db JY |
1986 | NULL, be[i].from, |
1987 | true, &be[i].flags, | |
1988 | 0, 0); | |
8b7bad58 AK |
1989 | if (err == -EINVAL) |
1990 | break; | |
1991 | if (err) | |
1992 | return err; | |
1993 | } | |
1994 | chain_nr -= nr; | |
1995 | } | |
1996 | ||
1997 | check_calls: | |
bf8bddbf | 1998 | for (i = first_call, nr_entries = 0; |
a29d5c9b | 1999 | i < chain_nr && nr_entries < max_stack; i++) { |
3f067dca | 2000 | u64 ip; |
3f067dca ACM |
2001 | |
2002 | if (callchain_param.order == ORDER_CALLEE) | |
a60335ba | 2003 | j = i; |
3f067dca | 2004 | else |
a60335ba SB |
2005 | j = chain->nr - i - 1; |
2006 | ||
2007 | #ifdef HAVE_SKIP_CALLCHAIN_IDX | |
2008 | if (j == skip_idx) | |
2009 | continue; | |
2010 | #endif | |
2011 | ip = chain->ips[j]; | |
3f067dca | 2012 | |
bf8bddbf ACM |
2013 | if (ip < PERF_CONTEXT_MAX) |
2014 | ++nr_entries; | |
a29d5c9b | 2015 | |
410024db JY |
2016 | err = add_callchain_ip(thread, cursor, parent, |
2017 | root_al, &cpumode, ip, | |
2018 | false, NULL, 0, 0); | |
3f067dca | 2019 | |
3f067dca | 2020 | if (err) |
2e77784b | 2021 | return (err < 0) ? err : 0; |
3f067dca ACM |
2022 | } |
2023 | ||
2024 | return 0; | |
2025 | } | |
2026 | ||
2027 | static int unwind_entry(struct unwind_entry *entry, void *arg) | |
2028 | { | |
2029 | struct callchain_cursor *cursor = arg; | |
b49a8fe5 NK |
2030 | |
2031 | if (symbol_conf.hide_unresolved && entry->sym == NULL) | |
2032 | return 0; | |
3f067dca | 2033 | return callchain_cursor_append(cursor, entry->ip, |
410024db JY |
2034 | entry->map, entry->sym, |
2035 | false, NULL, 0, 0); | |
3f067dca ACM |
2036 | } |
2037 | ||
9919a65e CP |
2038 | static int thread__resolve_callchain_unwind(struct thread *thread, |
2039 | struct callchain_cursor *cursor, | |
2040 | struct perf_evsel *evsel, | |
2041 | struct perf_sample *sample, | |
2042 | int max_stack) | |
3f067dca | 2043 | { |
3f067dca ACM |
2044 | /* Can we do dwarf post unwind? */ |
2045 | if (!((evsel->attr.sample_type & PERF_SAMPLE_REGS_USER) && | |
2046 | (evsel->attr.sample_type & PERF_SAMPLE_STACK_USER))) | |
2047 | return 0; | |
2048 | ||
2049 | /* Bail out if nothing was captured. */ | |
2050 | if ((!sample->user_regs.regs) || | |
2051 | (!sample->user_stack.size)) | |
2052 | return 0; | |
2053 | ||
91d7b2de | 2054 | return unwind__get_entries(unwind_entry, cursor, |
352ea45a | 2055 | thread, sample, max_stack); |
9919a65e | 2056 | } |
3f067dca | 2057 | |
9919a65e CP |
2058 | int thread__resolve_callchain(struct thread *thread, |
2059 | struct callchain_cursor *cursor, | |
2060 | struct perf_evsel *evsel, | |
2061 | struct perf_sample *sample, | |
2062 | struct symbol **parent, | |
2063 | struct addr_location *root_al, | |
2064 | int max_stack) | |
2065 | { | |
2066 | int ret = 0; | |
2067 | ||
2068 | callchain_cursor_reset(&callchain_cursor); | |
2069 | ||
2070 | if (callchain_param.order == ORDER_CALLEE) { | |
2071 | ret = thread__resolve_callchain_sample(thread, cursor, | |
2072 | evsel, sample, | |
2073 | parent, root_al, | |
2074 | max_stack); | |
2075 | if (ret) | |
2076 | return ret; | |
2077 | ret = thread__resolve_callchain_unwind(thread, cursor, | |
2078 | evsel, sample, | |
2079 | max_stack); | |
2080 | } else { | |
2081 | ret = thread__resolve_callchain_unwind(thread, cursor, | |
2082 | evsel, sample, | |
2083 | max_stack); | |
2084 | if (ret) | |
2085 | return ret; | |
2086 | ret = thread__resolve_callchain_sample(thread, cursor, | |
2087 | evsel, sample, | |
2088 | parent, root_al, | |
2089 | max_stack); | |
2090 | } | |
2091 | ||
2092 | return ret; | |
3f067dca | 2093 | } |
35feee19 DA |
2094 | |
2095 | int machine__for_each_thread(struct machine *machine, | |
2096 | int (*fn)(struct thread *thread, void *p), | |
2097 | void *priv) | |
2098 | { | |
2099 | struct rb_node *nd; | |
2100 | struct thread *thread; | |
2101 | int rc = 0; | |
2102 | ||
2103 | for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) { | |
2104 | thread = rb_entry(nd, struct thread, rb_node); | |
2105 | rc = fn(thread, priv); | |
2106 | if (rc != 0) | |
2107 | return rc; | |
2108 | } | |
2109 | ||
2110 | list_for_each_entry(thread, &machine->dead_threads, node) { | |
2111 | rc = fn(thread, priv); | |
2112 | if (rc != 0) | |
2113 | return rc; | |
2114 | } | |
2115 | return rc; | |
2116 | } | |
58d925dc | 2117 | |
a5499b37 AH |
2118 | int machines__for_each_thread(struct machines *machines, |
2119 | int (*fn)(struct thread *thread, void *p), | |
2120 | void *priv) | |
2121 | { | |
2122 | struct rb_node *nd; | |
2123 | int rc = 0; | |
2124 | ||
2125 | rc = machine__for_each_thread(&machines->host, fn, priv); | |
2126 | if (rc != 0) | |
2127 | return rc; | |
2128 | ||
2129 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { | |
2130 | struct machine *machine = rb_entry(nd, struct machine, rb_node); | |
2131 | ||
2132 | rc = machine__for_each_thread(machine, fn, priv); | |
2133 | if (rc != 0) | |
2134 | return rc; | |
2135 | } | |
2136 | return rc; | |
2137 | } | |
2138 | ||
a33fbd56 | 2139 | int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool, |
602ad878 | 2140 | struct target *target, struct thread_map *threads, |
9d9cad76 KL |
2141 | perf_event__handler_t process, bool data_mmap, |
2142 | unsigned int proc_map_timeout) | |
58d925dc | 2143 | { |
602ad878 | 2144 | if (target__has_task(target)) |
9d9cad76 | 2145 | return perf_event__synthesize_thread_map(tool, threads, process, machine, data_mmap, proc_map_timeout); |
602ad878 | 2146 | else if (target__has_cpu(target)) |
9d9cad76 | 2147 | return perf_event__synthesize_threads(tool, process, machine, data_mmap, proc_map_timeout); |
58d925dc ACM |
2148 | /* command specified */ |
2149 | return 0; | |
2150 | } | |
b9d266ba AH |
2151 | |
2152 | pid_t machine__get_current_tid(struct machine *machine, int cpu) | |
2153 | { | |
2154 | if (cpu < 0 || cpu >= MAX_NR_CPUS || !machine->current_tid) | |
2155 | return -1; | |
2156 | ||
2157 | return machine->current_tid[cpu]; | |
2158 | } | |
2159 | ||
2160 | int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid, | |
2161 | pid_t tid) | |
2162 | { | |
2163 | struct thread *thread; | |
2164 | ||
2165 | if (cpu < 0) | |
2166 | return -EINVAL; | |
2167 | ||
2168 | if (!machine->current_tid) { | |
2169 | int i; | |
2170 | ||
2171 | machine->current_tid = calloc(MAX_NR_CPUS, sizeof(pid_t)); | |
2172 | if (!machine->current_tid) | |
2173 | return -ENOMEM; | |
2174 | for (i = 0; i < MAX_NR_CPUS; i++) | |
2175 | machine->current_tid[i] = -1; | |
2176 | } | |
2177 | ||
2178 | if (cpu >= MAX_NR_CPUS) { | |
2179 | pr_err("Requested CPU %d too large. ", cpu); | |
2180 | pr_err("Consider raising MAX_NR_CPUS\n"); | |
2181 | return -EINVAL; | |
2182 | } | |
2183 | ||
2184 | machine->current_tid[cpu] = tid; | |
2185 | ||
2186 | thread = machine__findnew_thread(machine, pid, tid); | |
2187 | if (!thread) | |
2188 | return -ENOMEM; | |
2189 | ||
2190 | thread->cpu = cpu; | |
b91fc39f | 2191 | thread__put(thread); |
b9d266ba AH |
2192 | |
2193 | return 0; | |
2194 | } | |
fbe2af45 AH |
2195 | |
2196 | int machine__get_kernel_start(struct machine *machine) | |
2197 | { | |
a5e813c6 | 2198 | struct map *map = machine__kernel_map(machine); |
fbe2af45 AH |
2199 | int err = 0; |
2200 | ||
2201 | /* | |
2202 | * The only addresses above 2^63 are kernel addresses of a 64-bit | |
2203 | * kernel. Note that addresses are unsigned so that on a 32-bit system | |
2204 | * all addresses including kernel addresses are less than 2^32. In | |
2205 | * that case (32-bit system), if the kernel mapping is unknown, all | |
2206 | * addresses will be assumed to be in user space - see | |
2207 | * machine__kernel_ip(). | |
2208 | */ | |
2209 | machine->kernel_start = 1ULL << 63; | |
2210 | if (map) { | |
be39db9f | 2211 | err = map__load(map); |
4b1303d0 | 2212 | if (!err) |
fbe2af45 AH |
2213 | machine->kernel_start = map->start; |
2214 | } | |
2215 | return err; | |
2216 | } | |
aa7cc2ae ACM |
2217 | |
2218 | struct dso *machine__findnew_dso(struct machine *machine, const char *filename) | |
2219 | { | |
e8807844 | 2220 | return dsos__findnew(&machine->dsos, filename); |
aa7cc2ae | 2221 | } |
c3168b0d ACM |
2222 | |
2223 | char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp) | |
2224 | { | |
2225 | struct machine *machine = vmachine; | |
2226 | struct map *map; | |
be39db9f | 2227 | struct symbol *sym = map_groups__find_symbol(&machine->kmaps, MAP__FUNCTION, *addrp, &map); |
c3168b0d ACM |
2228 | |
2229 | if (sym == NULL) | |
2230 | return NULL; | |
2231 | ||
2232 | *modp = __map__is_kmodule(map) ? (char *)map->dso->short_name : NULL; | |
2233 | *addrp = map->unmap_ip(map, sym->start); | |
2234 | return sym->name; | |
2235 | } |