Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
76b31a29 | 2 | #include <dirent.h> |
a43783ae | 3 | #include <errno.h> |
fd20e811 | 4 | #include <inttypes.h> |
1eae20c1 | 5 | #include <regex.h> |
3f067dca | 6 | #include "callchain.h" |
b0a7d1a0 ACM |
7 | #include "debug.h" |
8 | #include "event.h" | |
3f067dca ACM |
9 | #include "evsel.h" |
10 | #include "hist.h" | |
9d2f8e22 ACM |
11 | #include "machine.h" |
12 | #include "map.h" | |
3f067dca | 13 | #include "sort.h" |
69d2591a | 14 | #include "strlist.h" |
9d2f8e22 | 15 | #include "thread.h" |
d027b640 | 16 | #include "vdso.h" |
9d2f8e22 | 17 | #include <stdbool.h> |
7a8ef4c4 ACM |
18 | #include <sys/types.h> |
19 | #include <sys/stat.h> | |
20 | #include <unistd.h> | |
3f067dca | 21 | #include "unwind.h" |
8b7bad58 | 22 | #include "linux/hash.h" |
f3b3614a | 23 | #include "asm/bug.h" |
9d2f8e22 | 24 | |
3d689ed6 ACM |
25 | #include "sane_ctype.h" |
26 | #include <symbol/kallsyms.h> | |
0f476f2b | 27 | #include <linux/mman.h> |
3d689ed6 | 28 | |
b91fc39f ACM |
29 | static void __machine__remove_thread(struct machine *machine, struct thread *th, bool lock); |
30 | ||
e167f995 ACM |
31 | static void dsos__init(struct dsos *dsos) |
32 | { | |
33 | INIT_LIST_HEAD(&dsos->head); | |
34 | dsos->root = RB_ROOT; | |
0a7c74ea | 35 | init_rwsem(&dsos->lock); |
e167f995 ACM |
36 | } |
37 | ||
91e467bc KL |
38 | static void machine__threads_init(struct machine *machine) |
39 | { | |
40 | int i; | |
41 | ||
42 | for (i = 0; i < THREADS__TABLE_SIZE; i++) { | |
43 | struct threads *threads = &machine->threads[i]; | |
44 | threads->entries = RB_ROOT; | |
0a7c74ea | 45 | init_rwsem(&threads->lock); |
91e467bc KL |
46 | threads->nr = 0; |
47 | INIT_LIST_HEAD(&threads->dead); | |
48 | threads->last_match = NULL; | |
49 | } | |
50 | } | |
51 | ||
8c7f1bb3 JO |
52 | static int machine__set_mmap_name(struct machine *machine) |
53 | { | |
c192524e JO |
54 | if (machine__is_host(machine)) |
55 | machine->mmap_name = strdup("[kernel.kallsyms]"); | |
56 | else if (machine__is_default_guest(machine)) | |
57 | machine->mmap_name = strdup("[guest.kernel.kallsyms]"); | |
58 | else if (asprintf(&machine->mmap_name, "[guest.kernel.kallsyms.%d]", | |
59 | machine->pid) < 0) | |
60 | machine->mmap_name = NULL; | |
8c7f1bb3 JO |
61 | |
62 | return machine->mmap_name ? 0 : -ENOMEM; | |
63 | } | |
64 | ||
69d2591a ACM |
65 | int machine__init(struct machine *machine, const char *root_dir, pid_t pid) |
66 | { | |
81f981d7 JO |
67 | int err = -ENOMEM; |
68 | ||
93b0ba3c | 69 | memset(machine, 0, sizeof(*machine)); |
11246c70 | 70 | map_groups__init(&machine->kmaps, machine); |
69d2591a | 71 | RB_CLEAR_NODE(&machine->rb_node); |
3d39ac53 | 72 | dsos__init(&machine->dsos); |
69d2591a | 73 | |
91e467bc | 74 | machine__threads_init(machine); |
69d2591a | 75 | |
d027b640 | 76 | machine->vdso_info = NULL; |
4cde998d | 77 | machine->env = NULL; |
d027b640 | 78 | |
69d2591a ACM |
79 | machine->pid = pid; |
80 | ||
14bd6d20 | 81 | machine->id_hdr_size = 0; |
caf8a0d0 | 82 | machine->kptr_restrict_warned = false; |
cfe1c414 | 83 | machine->comm_exec = false; |
fbe2af45 | 84 | machine->kernel_start = 0; |
611a5ce8 | 85 | |
cc1121ab MH |
86 | memset(machine->vmlinux_maps, 0, sizeof(machine->vmlinux_maps)); |
87 | ||
69d2591a ACM |
88 | machine->root_dir = strdup(root_dir); |
89 | if (machine->root_dir == NULL) | |
90 | return -ENOMEM; | |
91 | ||
8c7f1bb3 JO |
92 | if (machine__set_mmap_name(machine)) |
93 | goto out; | |
94 | ||
69d2591a | 95 | if (pid != HOST_KERNEL_ID) { |
1fcb8768 | 96 | struct thread *thread = machine__findnew_thread(machine, -1, |
314add6b | 97 | pid); |
69d2591a ACM |
98 | char comm[64]; |
99 | ||
100 | if (thread == NULL) | |
81f981d7 | 101 | goto out; |
69d2591a ACM |
102 | |
103 | snprintf(comm, sizeof(comm), "[guest/%d]", pid); | |
162f0bef | 104 | thread__set_comm(thread, comm, 0); |
b91fc39f | 105 | thread__put(thread); |
69d2591a ACM |
106 | } |
107 | ||
b9d266ba | 108 | machine->current_tid = NULL; |
81f981d7 | 109 | err = 0; |
b9d266ba | 110 | |
81f981d7 | 111 | out: |
8c7f1bb3 | 112 | if (err) { |
81f981d7 | 113 | zfree(&machine->root_dir); |
8c7f1bb3 JO |
114 | zfree(&machine->mmap_name); |
115 | } | |
69d2591a ACM |
116 | return 0; |
117 | } | |
118 | ||
8fb598e5 DA |
119 | struct machine *machine__new_host(void) |
120 | { | |
121 | struct machine *machine = malloc(sizeof(*machine)); | |
122 | ||
123 | if (machine != NULL) { | |
124 | machine__init(machine, "", HOST_KERNEL_ID); | |
125 | ||
126 | if (machine__create_kernel_maps(machine) < 0) | |
127 | goto out_delete; | |
128 | } | |
129 | ||
130 | return machine; | |
131 | out_delete: | |
132 | free(machine); | |
133 | return NULL; | |
134 | } | |
135 | ||
7d132caa ACM |
136 | struct machine *machine__new_kallsyms(void) |
137 | { | |
138 | struct machine *machine = machine__new_host(); | |
139 | /* | |
140 | * FIXME: | |
329f0ade | 141 | * 1) We should switch to machine__load_kallsyms(), i.e. not explicitely |
7d132caa ACM |
142 | * ask for not using the kcore parsing code, once this one is fixed |
143 | * to create a map per module. | |
144 | */ | |
329f0ade | 145 | if (machine && machine__load_kallsyms(machine, "/proc/kallsyms") <= 0) { |
7d132caa ACM |
146 | machine__delete(machine); |
147 | machine = NULL; | |
148 | } | |
149 | ||
150 | return machine; | |
151 | } | |
152 | ||
d3a7c489 | 153 | static void dsos__purge(struct dsos *dsos) |
69d2591a ACM |
154 | { |
155 | struct dso *pos, *n; | |
156 | ||
0a7c74ea | 157 | down_write(&dsos->lock); |
e8807844 | 158 | |
8fa7d87f | 159 | list_for_each_entry_safe(pos, n, &dsos->head, node) { |
4598a0a6 | 160 | RB_CLEAR_NODE(&pos->rb_node); |
e266a753 | 161 | pos->root = NULL; |
d3a7c489 ACM |
162 | list_del_init(&pos->node); |
163 | dso__put(pos); | |
69d2591a | 164 | } |
e8807844 | 165 | |
0a7c74ea | 166 | up_write(&dsos->lock); |
d3a7c489 | 167 | } |
e8807844 | 168 | |
d3a7c489 ACM |
169 | static void dsos__exit(struct dsos *dsos) |
170 | { | |
171 | dsos__purge(dsos); | |
0a7c74ea | 172 | exit_rwsem(&dsos->lock); |
69d2591a ACM |
173 | } |
174 | ||
3f067dca ACM |
175 | void machine__delete_threads(struct machine *machine) |
176 | { | |
b91fc39f | 177 | struct rb_node *nd; |
91e467bc | 178 | int i; |
3f067dca | 179 | |
91e467bc KL |
180 | for (i = 0; i < THREADS__TABLE_SIZE; i++) { |
181 | struct threads *threads = &machine->threads[i]; | |
0a7c74ea | 182 | down_write(&threads->lock); |
91e467bc KL |
183 | nd = rb_first(&threads->entries); |
184 | while (nd) { | |
185 | struct thread *t = rb_entry(nd, struct thread, rb_node); | |
3f067dca | 186 | |
91e467bc KL |
187 | nd = rb_next(nd); |
188 | __machine__remove_thread(machine, t, false); | |
189 | } | |
0a7c74ea | 190 | up_write(&threads->lock); |
3f067dca ACM |
191 | } |
192 | } | |
193 | ||
69d2591a ACM |
194 | void machine__exit(struct machine *machine) |
195 | { | |
91e467bc KL |
196 | int i; |
197 | ||
19993b82 ACM |
198 | if (machine == NULL) |
199 | return; | |
200 | ||
ebe9729c | 201 | machine__destroy_kernel_maps(machine); |
69d2591a | 202 | map_groups__exit(&machine->kmaps); |
e8807844 | 203 | dsos__exit(&machine->dsos); |
9a4388c7 | 204 | machine__exit_vdso(machine); |
04662523 | 205 | zfree(&machine->root_dir); |
8c7f1bb3 | 206 | zfree(&machine->mmap_name); |
b9d266ba | 207 | zfree(&machine->current_tid); |
91e467bc KL |
208 | |
209 | for (i = 0; i < THREADS__TABLE_SIZE; i++) { | |
210 | struct threads *threads = &machine->threads[i]; | |
0a7c74ea | 211 | exit_rwsem(&threads->lock); |
91e467bc | 212 | } |
69d2591a ACM |
213 | } |
214 | ||
215 | void machine__delete(struct machine *machine) | |
216 | { | |
32ca678d ACM |
217 | if (machine) { |
218 | machine__exit(machine); | |
219 | free(machine); | |
220 | } | |
69d2591a ACM |
221 | } |
222 | ||
876650e6 ACM |
223 | void machines__init(struct machines *machines) |
224 | { | |
225 | machine__init(&machines->host, "", HOST_KERNEL_ID); | |
226 | machines->guests = RB_ROOT; | |
227 | } | |
228 | ||
229 | void machines__exit(struct machines *machines) | |
230 | { | |
231 | machine__exit(&machines->host); | |
232 | /* XXX exit guest */ | |
233 | } | |
234 | ||
235 | struct machine *machines__add(struct machines *machines, pid_t pid, | |
69d2591a ACM |
236 | const char *root_dir) |
237 | { | |
876650e6 | 238 | struct rb_node **p = &machines->guests.rb_node; |
69d2591a ACM |
239 | struct rb_node *parent = NULL; |
240 | struct machine *pos, *machine = malloc(sizeof(*machine)); | |
241 | ||
242 | if (machine == NULL) | |
243 | return NULL; | |
244 | ||
245 | if (machine__init(machine, root_dir, pid) != 0) { | |
246 | free(machine); | |
247 | return NULL; | |
248 | } | |
249 | ||
250 | while (*p != NULL) { | |
251 | parent = *p; | |
252 | pos = rb_entry(parent, struct machine, rb_node); | |
253 | if (pid < pos->pid) | |
254 | p = &(*p)->rb_left; | |
255 | else | |
256 | p = &(*p)->rb_right; | |
257 | } | |
258 | ||
259 | rb_link_node(&machine->rb_node, parent, p); | |
876650e6 | 260 | rb_insert_color(&machine->rb_node, &machines->guests); |
69d2591a ACM |
261 | |
262 | return machine; | |
263 | } | |
264 | ||
cfe1c414 AH |
265 | void machines__set_comm_exec(struct machines *machines, bool comm_exec) |
266 | { | |
267 | struct rb_node *nd; | |
268 | ||
269 | machines->host.comm_exec = comm_exec; | |
270 | ||
271 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { | |
272 | struct machine *machine = rb_entry(nd, struct machine, rb_node); | |
273 | ||
274 | machine->comm_exec = comm_exec; | |
275 | } | |
276 | } | |
277 | ||
876650e6 | 278 | struct machine *machines__find(struct machines *machines, pid_t pid) |
69d2591a | 279 | { |
876650e6 | 280 | struct rb_node **p = &machines->guests.rb_node; |
69d2591a ACM |
281 | struct rb_node *parent = NULL; |
282 | struct machine *machine; | |
283 | struct machine *default_machine = NULL; | |
284 | ||
876650e6 ACM |
285 | if (pid == HOST_KERNEL_ID) |
286 | return &machines->host; | |
287 | ||
69d2591a ACM |
288 | while (*p != NULL) { |
289 | parent = *p; | |
290 | machine = rb_entry(parent, struct machine, rb_node); | |
291 | if (pid < machine->pid) | |
292 | p = &(*p)->rb_left; | |
293 | else if (pid > machine->pid) | |
294 | p = &(*p)->rb_right; | |
295 | else | |
296 | return machine; | |
297 | if (!machine->pid) | |
298 | default_machine = machine; | |
299 | } | |
300 | ||
301 | return default_machine; | |
302 | } | |
303 | ||
876650e6 | 304 | struct machine *machines__findnew(struct machines *machines, pid_t pid) |
69d2591a ACM |
305 | { |
306 | char path[PATH_MAX]; | |
307 | const char *root_dir = ""; | |
308 | struct machine *machine = machines__find(machines, pid); | |
309 | ||
310 | if (machine && (machine->pid == pid)) | |
311 | goto out; | |
312 | ||
313 | if ((pid != HOST_KERNEL_ID) && | |
314 | (pid != DEFAULT_GUEST_KERNEL_ID) && | |
315 | (symbol_conf.guestmount)) { | |
316 | sprintf(path, "%s/%d", symbol_conf.guestmount, pid); | |
317 | if (access(path, R_OK)) { | |
318 | static struct strlist *seen; | |
319 | ||
320 | if (!seen) | |
4a77e218 | 321 | seen = strlist__new(NULL, NULL); |
69d2591a ACM |
322 | |
323 | if (!strlist__has_entry(seen, path)) { | |
324 | pr_err("Can't access file %s\n", path); | |
325 | strlist__add(seen, path); | |
326 | } | |
327 | machine = NULL; | |
328 | goto out; | |
329 | } | |
330 | root_dir = path; | |
331 | } | |
332 | ||
333 | machine = machines__add(machines, pid, root_dir); | |
334 | out: | |
335 | return machine; | |
336 | } | |
337 | ||
876650e6 ACM |
338 | void machines__process_guests(struct machines *machines, |
339 | machine__process_t process, void *data) | |
69d2591a ACM |
340 | { |
341 | struct rb_node *nd; | |
342 | ||
876650e6 | 343 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { |
69d2591a ACM |
344 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
345 | process(pos, data); | |
346 | } | |
347 | } | |
348 | ||
876650e6 | 349 | void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size) |
69d2591a ACM |
350 | { |
351 | struct rb_node *node; | |
352 | struct machine *machine; | |
353 | ||
876650e6 ACM |
354 | machines->host.id_hdr_size = id_hdr_size; |
355 | ||
356 | for (node = rb_first(&machines->guests); node; node = rb_next(node)) { | |
69d2591a ACM |
357 | machine = rb_entry(node, struct machine, rb_node); |
358 | machine->id_hdr_size = id_hdr_size; | |
359 | } | |
360 | ||
361 | return; | |
362 | } | |
363 | ||
29ce3612 AH |
364 | static void machine__update_thread_pid(struct machine *machine, |
365 | struct thread *th, pid_t pid) | |
366 | { | |
367 | struct thread *leader; | |
368 | ||
369 | if (pid == th->pid_ || pid == -1 || th->pid_ != -1) | |
370 | return; | |
371 | ||
372 | th->pid_ = pid; | |
373 | ||
374 | if (th->pid_ == th->tid) | |
375 | return; | |
376 | ||
b91fc39f | 377 | leader = __machine__findnew_thread(machine, th->pid_, th->pid_); |
29ce3612 AH |
378 | if (!leader) |
379 | goto out_err; | |
380 | ||
381 | if (!leader->mg) | |
11246c70 | 382 | leader->mg = map_groups__new(machine); |
29ce3612 AH |
383 | |
384 | if (!leader->mg) | |
385 | goto out_err; | |
386 | ||
387 | if (th->mg == leader->mg) | |
388 | return; | |
389 | ||
390 | if (th->mg) { | |
391 | /* | |
392 | * Maps are created from MMAP events which provide the pid and | |
393 | * tid. Consequently there never should be any maps on a thread | |
394 | * with an unknown pid. Just print an error if there are. | |
395 | */ | |
396 | if (!map_groups__empty(th->mg)) | |
397 | pr_err("Discarding thread maps for %d:%d\n", | |
398 | th->pid_, th->tid); | |
8e160b2e | 399 | map_groups__put(th->mg); |
29ce3612 AH |
400 | } |
401 | ||
402 | th->mg = map_groups__get(leader->mg); | |
abd82868 ACM |
403 | out_put: |
404 | thread__put(leader); | |
29ce3612 | 405 | return; |
29ce3612 AH |
406 | out_err: |
407 | pr_err("Failed to join map groups for %d:%d\n", th->pid_, th->tid); | |
abd82868 | 408 | goto out_put; |
29ce3612 AH |
409 | } |
410 | ||
abd82868 | 411 | /* |
bd1a0be5 | 412 | * Caller must eventually drop thread->refcnt returned with a successful |
abd82868 ACM |
413 | * lookup/new thread inserted. |
414 | */ | |
b91fc39f | 415 | static struct thread *____machine__findnew_thread(struct machine *machine, |
75e45e43 | 416 | struct threads *threads, |
b91fc39f ACM |
417 | pid_t pid, pid_t tid, |
418 | bool create) | |
9d2f8e22 | 419 | { |
91e467bc | 420 | struct rb_node **p = &threads->entries.rb_node; |
9d2f8e22 ACM |
421 | struct rb_node *parent = NULL; |
422 | struct thread *th; | |
423 | ||
424 | /* | |
38051234 | 425 | * Front-end cache - TID lookups come in blocks, |
9d2f8e22 ACM |
426 | * so most of the time we dont have to look up |
427 | * the full rbtree: | |
428 | */ | |
91e467bc | 429 | th = threads->last_match; |
f3b623b8 ACM |
430 | if (th != NULL) { |
431 | if (th->tid == tid) { | |
432 | machine__update_thread_pid(machine, th, pid); | |
abd82868 | 433 | return thread__get(th); |
f3b623b8 ACM |
434 | } |
435 | ||
91e467bc | 436 | threads->last_match = NULL; |
99d725fc | 437 | } |
9d2f8e22 ACM |
438 | |
439 | while (*p != NULL) { | |
440 | parent = *p; | |
441 | th = rb_entry(parent, struct thread, rb_node); | |
442 | ||
38051234 | 443 | if (th->tid == tid) { |
91e467bc | 444 | threads->last_match = th; |
29ce3612 | 445 | machine__update_thread_pid(machine, th, pid); |
abd82868 | 446 | return thread__get(th); |
9d2f8e22 ACM |
447 | } |
448 | ||
38051234 | 449 | if (tid < th->tid) |
9d2f8e22 ACM |
450 | p = &(*p)->rb_left; |
451 | else | |
452 | p = &(*p)->rb_right; | |
453 | } | |
454 | ||
455 | if (!create) | |
456 | return NULL; | |
457 | ||
99d725fc | 458 | th = thread__new(pid, tid); |
9d2f8e22 ACM |
459 | if (th != NULL) { |
460 | rb_link_node(&th->rb_node, parent, p); | |
91e467bc | 461 | rb_insert_color(&th->rb_node, &threads->entries); |
cddcef60 JO |
462 | |
463 | /* | |
464 | * We have to initialize map_groups separately | |
465 | * after rb tree is updated. | |
466 | * | |
467 | * The reason is that we call machine__findnew_thread | |
468 | * within thread__init_map_groups to find the thread | |
469 | * leader and that would screwed the rb tree. | |
470 | */ | |
418029b7 | 471 | if (thread__init_map_groups(th, machine)) { |
91e467bc | 472 | rb_erase_init(&th->rb_node, &threads->entries); |
b91fc39f | 473 | RB_CLEAR_NODE(&th->rb_node); |
abd82868 | 474 | thread__put(th); |
cddcef60 | 475 | return NULL; |
418029b7 | 476 | } |
f3b623b8 ACM |
477 | /* |
478 | * It is now in the rbtree, get a ref | |
479 | */ | |
480 | thread__get(th); | |
91e467bc KL |
481 | threads->last_match = th; |
482 | ++threads->nr; | |
9d2f8e22 ACM |
483 | } |
484 | ||
485 | return th; | |
486 | } | |
487 | ||
b91fc39f ACM |
488 | struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid) |
489 | { | |
75e45e43 | 490 | return ____machine__findnew_thread(machine, machine__threads(machine, tid), pid, tid, true); |
b91fc39f ACM |
491 | } |
492 | ||
314add6b AH |
493 | struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, |
494 | pid_t tid) | |
9d2f8e22 | 495 | { |
91e467bc | 496 | struct threads *threads = machine__threads(machine, tid); |
b91fc39f ACM |
497 | struct thread *th; |
498 | ||
0a7c74ea | 499 | down_write(&threads->lock); |
abd82868 | 500 | th = __machine__findnew_thread(machine, pid, tid); |
0a7c74ea | 501 | up_write(&threads->lock); |
b91fc39f | 502 | return th; |
9d2f8e22 ACM |
503 | } |
504 | ||
d75e6097 JO |
505 | struct thread *machine__find_thread(struct machine *machine, pid_t pid, |
506 | pid_t tid) | |
9d2f8e22 | 507 | { |
91e467bc | 508 | struct threads *threads = machine__threads(machine, tid); |
b91fc39f | 509 | struct thread *th; |
91e467bc | 510 | |
0a7c74ea | 511 | down_read(&threads->lock); |
75e45e43 | 512 | th = ____machine__findnew_thread(machine, threads, pid, tid, false); |
0a7c74ea | 513 | up_read(&threads->lock); |
b91fc39f | 514 | return th; |
9d2f8e22 | 515 | } |
b0a7d1a0 | 516 | |
cfe1c414 AH |
517 | struct comm *machine__thread_exec_comm(struct machine *machine, |
518 | struct thread *thread) | |
519 | { | |
520 | if (machine->comm_exec) | |
521 | return thread__exec_comm(thread); | |
522 | else | |
523 | return thread__comm(thread); | |
524 | } | |
525 | ||
162f0bef FW |
526 | int machine__process_comm_event(struct machine *machine, union perf_event *event, |
527 | struct perf_sample *sample) | |
b0a7d1a0 | 528 | { |
314add6b AH |
529 | struct thread *thread = machine__findnew_thread(machine, |
530 | event->comm.pid, | |
531 | event->comm.tid); | |
65de51f9 | 532 | bool exec = event->header.misc & PERF_RECORD_MISC_COMM_EXEC; |
b91fc39f | 533 | int err = 0; |
b0a7d1a0 | 534 | |
cfe1c414 AH |
535 | if (exec) |
536 | machine->comm_exec = true; | |
537 | ||
b0a7d1a0 ACM |
538 | if (dump_trace) |
539 | perf_event__fprintf_comm(event, stdout); | |
540 | ||
65de51f9 AH |
541 | if (thread == NULL || |
542 | __thread__set_comm(thread, event->comm.comm, sample->time, exec)) { | |
b0a7d1a0 | 543 | dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); |
b91fc39f | 544 | err = -1; |
b0a7d1a0 ACM |
545 | } |
546 | ||
b91fc39f ACM |
547 | thread__put(thread); |
548 | ||
549 | return err; | |
b0a7d1a0 ACM |
550 | } |
551 | ||
f3b3614a HB |
552 | int machine__process_namespaces_event(struct machine *machine __maybe_unused, |
553 | union perf_event *event, | |
554 | struct perf_sample *sample __maybe_unused) | |
555 | { | |
556 | struct thread *thread = machine__findnew_thread(machine, | |
557 | event->namespaces.pid, | |
558 | event->namespaces.tid); | |
559 | int err = 0; | |
560 | ||
561 | WARN_ONCE(event->namespaces.nr_namespaces > NR_NAMESPACES, | |
562 | "\nWARNING: kernel seems to support more namespaces than perf" | |
563 | " tool.\nTry updating the perf tool..\n\n"); | |
564 | ||
565 | WARN_ONCE(event->namespaces.nr_namespaces < NR_NAMESPACES, | |
566 | "\nWARNING: perf tool seems to support more namespaces than" | |
567 | " the kernel.\nTry updating the kernel..\n\n"); | |
568 | ||
569 | if (dump_trace) | |
570 | perf_event__fprintf_namespaces(event, stdout); | |
571 | ||
572 | if (thread == NULL || | |
573 | thread__set_namespaces(thread, sample->time, &event->namespaces)) { | |
574 | dump_printf("problem processing PERF_RECORD_NAMESPACES, skipping event.\n"); | |
575 | err = -1; | |
576 | } | |
577 | ||
578 | thread__put(thread); | |
579 | ||
580 | return err; | |
581 | } | |
582 | ||
b0a7d1a0 | 583 | int machine__process_lost_event(struct machine *machine __maybe_unused, |
162f0bef | 584 | union perf_event *event, struct perf_sample *sample __maybe_unused) |
b0a7d1a0 ACM |
585 | { |
586 | dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n", | |
587 | event->lost.id, event->lost.lost); | |
588 | return 0; | |
589 | } | |
590 | ||
c4937a91 KL |
591 | int machine__process_lost_samples_event(struct machine *machine __maybe_unused, |
592 | union perf_event *event, struct perf_sample *sample) | |
593 | { | |
594 | dump_printf(": id:%" PRIu64 ": lost samples :%" PRIu64 "\n", | |
595 | sample->id, event->lost_samples.lost); | |
596 | return 0; | |
597 | } | |
598 | ||
9f2de315 ACM |
599 | static struct dso *machine__findnew_module_dso(struct machine *machine, |
600 | struct kmod_path *m, | |
601 | const char *filename) | |
da17ea33 JO |
602 | { |
603 | struct dso *dso; | |
da17ea33 | 604 | |
0a7c74ea | 605 | down_write(&machine->dsos.lock); |
e8807844 ACM |
606 | |
607 | dso = __dsos__find(&machine->dsos, m->name, true); | |
da17ea33 | 608 | if (!dso) { |
e8807844 | 609 | dso = __dsos__addnew(&machine->dsos, m->name); |
da17ea33 | 610 | if (dso == NULL) |
e8807844 | 611 | goto out_unlock; |
da17ea33 | 612 | |
6b335e8f | 613 | dso__set_module_info(dso, m, machine); |
ca33380a | 614 | dso__set_long_name(dso, strdup(filename), true); |
da17ea33 JO |
615 | } |
616 | ||
d3a7c489 | 617 | dso__get(dso); |
e8807844 | 618 | out_unlock: |
0a7c74ea | 619 | up_write(&machine->dsos.lock); |
da17ea33 JO |
620 | return dso; |
621 | } | |
622 | ||
4a96f7a0 AH |
623 | int machine__process_aux_event(struct machine *machine __maybe_unused, |
624 | union perf_event *event) | |
625 | { | |
626 | if (dump_trace) | |
627 | perf_event__fprintf_aux(event, stdout); | |
628 | return 0; | |
629 | } | |
630 | ||
0ad21f68 AH |
631 | int machine__process_itrace_start_event(struct machine *machine __maybe_unused, |
632 | union perf_event *event) | |
633 | { | |
634 | if (dump_trace) | |
635 | perf_event__fprintf_itrace_start(event, stdout); | |
636 | return 0; | |
637 | } | |
638 | ||
0286039f AH |
639 | int machine__process_switch_event(struct machine *machine __maybe_unused, |
640 | union perf_event *event) | |
641 | { | |
642 | if (dump_trace) | |
643 | perf_event__fprintf_switch(event, stdout); | |
644 | return 0; | |
645 | } | |
646 | ||
c03d5184 WN |
647 | static void dso__adjust_kmod_long_name(struct dso *dso, const char *filename) |
648 | { | |
649 | const char *dup_filename; | |
650 | ||
651 | if (!filename || !dso || !dso->long_name) | |
652 | return; | |
653 | if (dso->long_name[0] != '[') | |
654 | return; | |
655 | if (!strchr(filename, '/')) | |
656 | return; | |
657 | ||
658 | dup_filename = strdup(filename); | |
659 | if (!dup_filename) | |
660 | return; | |
661 | ||
5dcf16df | 662 | dso__set_long_name(dso, dup_filename, true); |
c03d5184 WN |
663 | } |
664 | ||
9f2de315 ACM |
665 | struct map *machine__findnew_module_map(struct machine *machine, u64 start, |
666 | const char *filename) | |
3f067dca | 667 | { |
ca33380a | 668 | struct map *map = NULL; |
566c69c3 | 669 | struct dso *dso = NULL; |
ca33380a | 670 | struct kmod_path m; |
3f067dca | 671 | |
ca33380a | 672 | if (kmod_path__parse_name(&m, filename)) |
3f067dca ACM |
673 | return NULL; |
674 | ||
83cf774b | 675 | map = map_groups__find_by_name(&machine->kmaps, m.name); |
c03d5184 WN |
676 | if (map) { |
677 | /* | |
678 | * If the map's dso is an offline module, give dso__load() | |
679 | * a chance to find the file path of that module by fixing | |
680 | * long_name. | |
681 | */ | |
682 | dso__adjust_kmod_long_name(map->dso, filename); | |
bc84f464 | 683 | goto out; |
c03d5184 | 684 | } |
bc84f464 | 685 | |
9f2de315 | 686 | dso = machine__findnew_module_dso(machine, &m, filename); |
ca33380a JO |
687 | if (dso == NULL) |
688 | goto out; | |
689 | ||
3f067dca ACM |
690 | map = map__new2(start, dso, MAP__FUNCTION); |
691 | if (map == NULL) | |
ca33380a | 692 | goto out; |
3f067dca | 693 | |
3f067dca | 694 | map_groups__insert(&machine->kmaps, map); |
ca33380a | 695 | |
9afcb420 MH |
696 | /* Put the map here because map_groups__insert alread got it */ |
697 | map__put(map); | |
ca33380a | 698 | out: |
566c69c3 MH |
699 | /* put the dso here, corresponding to machine__findnew_module_dso */ |
700 | dso__put(dso); | |
ca33380a | 701 | free(m.name); |
3f067dca ACM |
702 | return map; |
703 | } | |
704 | ||
876650e6 | 705 | size_t machines__fprintf_dsos(struct machines *machines, FILE *fp) |
3f067dca ACM |
706 | { |
707 | struct rb_node *nd; | |
3d39ac53 | 708 | size_t ret = __dsos__fprintf(&machines->host.dsos.head, fp); |
3f067dca | 709 | |
876650e6 | 710 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { |
3f067dca | 711 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
3d39ac53 | 712 | ret += __dsos__fprintf(&pos->dsos.head, fp); |
3f067dca ACM |
713 | } |
714 | ||
715 | return ret; | |
716 | } | |
717 | ||
8fa7d87f | 718 | size_t machine__fprintf_dsos_buildid(struct machine *m, FILE *fp, |
3f067dca ACM |
719 | bool (skip)(struct dso *dso, int parm), int parm) |
720 | { | |
3d39ac53 | 721 | return __dsos__fprintf_buildid(&m->dsos.head, fp, skip, parm); |
3f067dca ACM |
722 | } |
723 | ||
876650e6 | 724 | size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, |
3f067dca ACM |
725 | bool (skip)(struct dso *dso, int parm), int parm) |
726 | { | |
727 | struct rb_node *nd; | |
876650e6 | 728 | size_t ret = machine__fprintf_dsos_buildid(&machines->host, fp, skip, parm); |
3f067dca | 729 | |
876650e6 | 730 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { |
3f067dca ACM |
731 | struct machine *pos = rb_entry(nd, struct machine, rb_node); |
732 | ret += machine__fprintf_dsos_buildid(pos, fp, skip, parm); | |
733 | } | |
734 | return ret; | |
735 | } | |
736 | ||
737 | size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp) | |
738 | { | |
739 | int i; | |
740 | size_t printed = 0; | |
a5e813c6 | 741 | struct dso *kdso = machine__kernel_map(machine)->dso; |
3f067dca ACM |
742 | |
743 | if (kdso->has_build_id) { | |
744 | char filename[PATH_MAX]; | |
d2396999 KJ |
745 | if (dso__build_id_filename(kdso, filename, sizeof(filename), |
746 | false)) | |
3f067dca ACM |
747 | printed += fprintf(fp, "[0] %s\n", filename); |
748 | } | |
749 | ||
750 | for (i = 0; i < vmlinux_path__nr_entries; ++i) | |
751 | printed += fprintf(fp, "[%d] %s\n", | |
752 | i + kdso->has_build_id, vmlinux_path[i]); | |
753 | ||
754 | return printed; | |
755 | } | |
756 | ||
757 | size_t machine__fprintf(struct machine *machine, FILE *fp) | |
758 | { | |
3f067dca | 759 | struct rb_node *nd; |
91e467bc KL |
760 | size_t ret; |
761 | int i; | |
3f067dca | 762 | |
91e467bc KL |
763 | for (i = 0; i < THREADS__TABLE_SIZE; i++) { |
764 | struct threads *threads = &machine->threads[i]; | |
0a7c74ea ACM |
765 | |
766 | down_read(&threads->lock); | |
d2c11034 | 767 | |
91e467bc | 768 | ret = fprintf(fp, "Threads: %u\n", threads->nr); |
3f067dca | 769 | |
91e467bc KL |
770 | for (nd = rb_first(&threads->entries); nd; nd = rb_next(nd)) { |
771 | struct thread *pos = rb_entry(nd, struct thread, rb_node); | |
3f067dca | 772 | |
91e467bc KL |
773 | ret += thread__fprintf(pos, fp); |
774 | } | |
b91fc39f | 775 | |
0a7c74ea | 776 | up_read(&threads->lock); |
91e467bc | 777 | } |
3f067dca ACM |
778 | return ret; |
779 | } | |
780 | ||
781 | static struct dso *machine__get_kernel(struct machine *machine) | |
782 | { | |
8c7f1bb3 | 783 | const char *vmlinux_name = machine->mmap_name; |
3f067dca ACM |
784 | struct dso *kernel; |
785 | ||
786 | if (machine__is_host(machine)) { | |
c192524e JO |
787 | if (symbol_conf.vmlinux_name) |
788 | vmlinux_name = symbol_conf.vmlinux_name; | |
789 | ||
459ce518 ACM |
790 | kernel = machine__findnew_kernel(machine, vmlinux_name, |
791 | "[kernel]", DSO_TYPE_KERNEL); | |
3f067dca | 792 | } else { |
c192524e JO |
793 | if (symbol_conf.default_guest_vmlinux_name) |
794 | vmlinux_name = symbol_conf.default_guest_vmlinux_name; | |
795 | ||
459ce518 ACM |
796 | kernel = machine__findnew_kernel(machine, vmlinux_name, |
797 | "[guest.kernel]", | |
798 | DSO_TYPE_GUEST_KERNEL); | |
3f067dca ACM |
799 | } |
800 | ||
801 | if (kernel != NULL && (!kernel->has_build_id)) | |
802 | dso__read_running_kernel_build_id(kernel, machine); | |
803 | ||
804 | return kernel; | |
805 | } | |
806 | ||
807 | struct process_args { | |
808 | u64 start; | |
809 | }; | |
810 | ||
15a0a870 AH |
811 | static void machine__get_kallsyms_filename(struct machine *machine, char *buf, |
812 | size_t bufsz) | |
813 | { | |
814 | if (machine__is_default_guest(machine)) | |
815 | scnprintf(buf, bufsz, "%s", symbol_conf.default_guest_kallsyms); | |
816 | else | |
817 | scnprintf(buf, bufsz, "%s/proc/kallsyms", machine->root_dir); | |
818 | } | |
819 | ||
a93f0e55 SQ |
820 | const char *ref_reloc_sym_names[] = {"_text", "_stext", NULL}; |
821 | ||
822 | /* Figure out the start address of kernel map from /proc/kallsyms. | |
823 | * Returns the name of the start symbol in *symbol_name. Pass in NULL as | |
824 | * symbol_name if it's not that important. | |
825 | */ | |
b843f62a ACM |
826 | static int machine__get_running_kernel_start(struct machine *machine, |
827 | const char **symbol_name, u64 *start) | |
3f067dca | 828 | { |
15a0a870 | 829 | char filename[PATH_MAX]; |
b843f62a | 830 | int i, err = -1; |
a93f0e55 SQ |
831 | const char *name; |
832 | u64 addr = 0; | |
3f067dca | 833 | |
15a0a870 | 834 | machine__get_kallsyms_filename(machine, filename, PATH_MAX); |
3f067dca ACM |
835 | |
836 | if (symbol__restricted_filename(filename, "/proc/kallsyms")) | |
837 | return 0; | |
838 | ||
a93f0e55 | 839 | for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) { |
b843f62a ACM |
840 | err = kallsyms__get_function_start(filename, name, &addr); |
841 | if (!err) | |
a93f0e55 SQ |
842 | break; |
843 | } | |
844 | ||
b843f62a ACM |
845 | if (err) |
846 | return -1; | |
847 | ||
a93f0e55 SQ |
848 | if (symbol_name) |
849 | *symbol_name = name; | |
3f067dca | 850 | |
b843f62a ACM |
851 | *start = addr; |
852 | return 0; | |
3f067dca ACM |
853 | } |
854 | ||
1fb87b8e JO |
855 | static int |
856 | __machine__create_kernel_maps(struct machine *machine, struct dso *kernel) | |
3f067dca | 857 | { |
a0b2f5af | 858 | int type; |
3f067dca | 859 | |
cc1121ab MH |
860 | /* In case of renewal the kernel map, destroy previous one */ |
861 | machine__destroy_kernel_maps(machine); | |
862 | ||
3f067dca ACM |
863 | for (type = 0; type < MAP__NR_TYPES; ++type) { |
864 | struct kmap *kmap; | |
77e65977 | 865 | struct map *map; |
3f067dca | 866 | |
1fb87b8e | 867 | machine->vmlinux_maps[type] = map__new2(0, kernel, type); |
3f067dca ACM |
868 | if (machine->vmlinux_maps[type] == NULL) |
869 | return -1; | |
870 | ||
871 | machine->vmlinux_maps[type]->map_ip = | |
872 | machine->vmlinux_maps[type]->unmap_ip = | |
873 | identity__map_ip; | |
a5e813c6 | 874 | map = __machine__kernel_map(machine, type); |
77e65977 | 875 | kmap = map__kmap(map); |
ba92732e WN |
876 | if (!kmap) |
877 | return -1; | |
878 | ||
3f067dca | 879 | kmap->kmaps = &machine->kmaps; |
77e65977 | 880 | map_groups__insert(&machine->kmaps, map); |
3f067dca ACM |
881 | } |
882 | ||
883 | return 0; | |
884 | } | |
885 | ||
886 | void machine__destroy_kernel_maps(struct machine *machine) | |
887 | { | |
a0b2f5af | 888 | int type; |
3f067dca ACM |
889 | |
890 | for (type = 0; type < MAP__NR_TYPES; ++type) { | |
891 | struct kmap *kmap; | |
a5e813c6 | 892 | struct map *map = __machine__kernel_map(machine, type); |
3f067dca | 893 | |
77e65977 | 894 | if (map == NULL) |
3f067dca ACM |
895 | continue; |
896 | ||
77e65977 ACM |
897 | kmap = map__kmap(map); |
898 | map_groups__remove(&machine->kmaps, map); | |
ba92732e | 899 | if (kmap && kmap->ref_reloc_sym) { |
3f067dca ACM |
900 | /* |
901 | * ref_reloc_sym is shared among all maps, so free just | |
902 | * on one of them. | |
903 | */ | |
904 | if (type == MAP__FUNCTION) { | |
04662523 ACM |
905 | zfree((char **)&kmap->ref_reloc_sym->name); |
906 | zfree(&kmap->ref_reloc_sym); | |
907 | } else | |
908 | kmap->ref_reloc_sym = NULL; | |
3f067dca ACM |
909 | } |
910 | ||
e96e4078 | 911 | map__put(machine->vmlinux_maps[type]); |
3f067dca ACM |
912 | machine->vmlinux_maps[type] = NULL; |
913 | } | |
914 | } | |
915 | ||
876650e6 | 916 | int machines__create_guest_kernel_maps(struct machines *machines) |
3f067dca ACM |
917 | { |
918 | int ret = 0; | |
919 | struct dirent **namelist = NULL; | |
920 | int i, items = 0; | |
921 | char path[PATH_MAX]; | |
922 | pid_t pid; | |
923 | char *endp; | |
924 | ||
925 | if (symbol_conf.default_guest_vmlinux_name || | |
926 | symbol_conf.default_guest_modules || | |
927 | symbol_conf.default_guest_kallsyms) { | |
928 | machines__create_kernel_maps(machines, DEFAULT_GUEST_KERNEL_ID); | |
929 | } | |
930 | ||
931 | if (symbol_conf.guestmount) { | |
932 | items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL); | |
933 | if (items <= 0) | |
934 | return -ENOENT; | |
935 | for (i = 0; i < items; i++) { | |
936 | if (!isdigit(namelist[i]->d_name[0])) { | |
937 | /* Filter out . and .. */ | |
938 | continue; | |
939 | } | |
940 | pid = (pid_t)strtol(namelist[i]->d_name, &endp, 10); | |
941 | if ((*endp != '\0') || | |
942 | (endp == namelist[i]->d_name) || | |
943 | (errno == ERANGE)) { | |
944 | pr_debug("invalid directory (%s). Skipping.\n", | |
945 | namelist[i]->d_name); | |
946 | continue; | |
947 | } | |
948 | sprintf(path, "%s/%s/proc/kallsyms", | |
949 | symbol_conf.guestmount, | |
950 | namelist[i]->d_name); | |
951 | ret = access(path, R_OK); | |
952 | if (ret) { | |
953 | pr_debug("Can't access file %s\n", path); | |
954 | goto failure; | |
955 | } | |
956 | machines__create_kernel_maps(machines, pid); | |
957 | } | |
958 | failure: | |
959 | free(namelist); | |
960 | } | |
961 | ||
962 | return ret; | |
963 | } | |
964 | ||
876650e6 | 965 | void machines__destroy_kernel_maps(struct machines *machines) |
3f067dca | 966 | { |
876650e6 ACM |
967 | struct rb_node *next = rb_first(&machines->guests); |
968 | ||
969 | machine__destroy_kernel_maps(&machines->host); | |
3f067dca ACM |
970 | |
971 | while (next) { | |
972 | struct machine *pos = rb_entry(next, struct machine, rb_node); | |
973 | ||
974 | next = rb_next(&pos->rb_node); | |
876650e6 | 975 | rb_erase(&pos->rb_node, &machines->guests); |
3f067dca ACM |
976 | machine__delete(pos); |
977 | } | |
978 | } | |
979 | ||
876650e6 | 980 | int machines__create_kernel_maps(struct machines *machines, pid_t pid) |
3f067dca ACM |
981 | { |
982 | struct machine *machine = machines__findnew(machines, pid); | |
983 | ||
984 | if (machine == NULL) | |
985 | return -1; | |
986 | ||
987 | return machine__create_kernel_maps(machine); | |
988 | } | |
989 | ||
329f0ade | 990 | int __machine__load_kallsyms(struct machine *machine, const char *filename, |
e8f3879f | 991 | enum map_type type) |
3f067dca | 992 | { |
a5e813c6 | 993 | struct map *map = machine__kernel_map(machine); |
e8f3879f | 994 | int ret = __dso__load_kallsyms(map->dso, filename, map, true); |
3f067dca ACM |
995 | |
996 | if (ret > 0) { | |
997 | dso__set_loaded(map->dso, type); | |
998 | /* | |
999 | * Since /proc/kallsyms will have multiple sessions for the | |
1000 | * kernel, with modules between them, fixup the end of all | |
1001 | * sections. | |
1002 | */ | |
1003 | __map_groups__fixup_end(&machine->kmaps, type); | |
1004 | } | |
1005 | ||
1006 | return ret; | |
1007 | } | |
1008 | ||
1d1a2654 | 1009 | int machine__load_vmlinux_path(struct machine *machine) |
3f067dca | 1010 | { |
a5e813c6 | 1011 | struct map *map = machine__kernel_map(machine); |
be39db9f | 1012 | int ret = dso__load_vmlinux_path(map->dso, map); |
3f067dca | 1013 | |
39b12f78 | 1014 | if (ret > 0) |
1d1a2654 | 1015 | dso__set_loaded(map->dso, map->type); |
3f067dca ACM |
1016 | |
1017 | return ret; | |
1018 | } | |
1019 | ||
3f067dca ACM |
1020 | static char *get_kernel_version(const char *root_dir) |
1021 | { | |
1022 | char version[PATH_MAX]; | |
1023 | FILE *file; | |
1024 | char *name, *tmp; | |
1025 | const char *prefix = "Linux version "; | |
1026 | ||
1027 | sprintf(version, "%s/proc/version", root_dir); | |
1028 | file = fopen(version, "r"); | |
1029 | if (!file) | |
1030 | return NULL; | |
1031 | ||
1032 | version[0] = '\0'; | |
1033 | tmp = fgets(version, sizeof(version), file); | |
1034 | fclose(file); | |
1035 | ||
1036 | name = strstr(version, prefix); | |
1037 | if (!name) | |
1038 | return NULL; | |
1039 | name += strlen(prefix); | |
1040 | tmp = strchr(name, ' '); | |
1041 | if (tmp) | |
1042 | *tmp = '\0'; | |
1043 | ||
1044 | return strdup(name); | |
1045 | } | |
1046 | ||
bb58a8a4 JO |
1047 | static bool is_kmod_dso(struct dso *dso) |
1048 | { | |
1049 | return dso->symtab_type == DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE || | |
1050 | dso->symtab_type == DSO_BINARY_TYPE__GUEST_KMODULE; | |
1051 | } | |
1052 | ||
1053 | static int map_groups__set_module_path(struct map_groups *mg, const char *path, | |
1054 | struct kmod_path *m) | |
1055 | { | |
bb58a8a4 | 1056 | char *long_name; |
83cf774b | 1057 | struct map *map = map_groups__find_by_name(mg, m->name); |
bb58a8a4 | 1058 | |
bb58a8a4 JO |
1059 | if (map == NULL) |
1060 | return 0; | |
1061 | ||
1062 | long_name = strdup(path); | |
1063 | if (long_name == NULL) | |
1064 | return -ENOMEM; | |
1065 | ||
1066 | dso__set_long_name(map->dso, long_name, true); | |
1067 | dso__kernel_module_get_build_id(map->dso, ""); | |
1068 | ||
1069 | /* | |
1070 | * Full name could reveal us kmod compression, so | |
1071 | * we need to update the symtab_type if needed. | |
1072 | */ | |
1073 | if (m->comp && is_kmod_dso(map->dso)) | |
1074 | map->dso->symtab_type++; | |
1075 | ||
1076 | return 0; | |
1077 | } | |
1078 | ||
3f067dca | 1079 | static int map_groups__set_modules_path_dir(struct map_groups *mg, |
61d4290c | 1080 | const char *dir_name, int depth) |
3f067dca ACM |
1081 | { |
1082 | struct dirent *dent; | |
1083 | DIR *dir = opendir(dir_name); | |
1084 | int ret = 0; | |
1085 | ||
1086 | if (!dir) { | |
1087 | pr_debug("%s: cannot open %s dir\n", __func__, dir_name); | |
1088 | return -1; | |
1089 | } | |
1090 | ||
1091 | while ((dent = readdir(dir)) != NULL) { | |
1092 | char path[PATH_MAX]; | |
1093 | struct stat st; | |
1094 | ||
1095 | /*sshfs might return bad dent->d_type, so we have to stat*/ | |
1096 | snprintf(path, sizeof(path), "%s/%s", dir_name, dent->d_name); | |
1097 | if (stat(path, &st)) | |
1098 | continue; | |
1099 | ||
1100 | if (S_ISDIR(st.st_mode)) { | |
1101 | if (!strcmp(dent->d_name, ".") || | |
1102 | !strcmp(dent->d_name, "..")) | |
1103 | continue; | |
1104 | ||
61d4290c RY |
1105 | /* Do not follow top-level source and build symlinks */ |
1106 | if (depth == 0) { | |
1107 | if (!strcmp(dent->d_name, "source") || | |
1108 | !strcmp(dent->d_name, "build")) | |
1109 | continue; | |
1110 | } | |
1111 | ||
1112 | ret = map_groups__set_modules_path_dir(mg, path, | |
1113 | depth + 1); | |
3f067dca ACM |
1114 | if (ret < 0) |
1115 | goto out; | |
1116 | } else { | |
bb58a8a4 | 1117 | struct kmod_path m; |
3f067dca | 1118 | |
bb58a8a4 JO |
1119 | ret = kmod_path__parse_name(&m, dent->d_name); |
1120 | if (ret) | |
1121 | goto out; | |
c00c48fc | 1122 | |
bb58a8a4 JO |
1123 | if (m.kmod) |
1124 | ret = map_groups__set_module_path(mg, path, &m); | |
c00c48fc | 1125 | |
bb58a8a4 | 1126 | free(m.name); |
3f067dca | 1127 | |
bb58a8a4 | 1128 | if (ret) |
3f067dca | 1129 | goto out; |
3f067dca ACM |
1130 | } |
1131 | } | |
1132 | ||
1133 | out: | |
1134 | closedir(dir); | |
1135 | return ret; | |
1136 | } | |
1137 | ||
1138 | static int machine__set_modules_path(struct machine *machine) | |
1139 | { | |
1140 | char *version; | |
1141 | char modules_path[PATH_MAX]; | |
1142 | ||
1143 | version = get_kernel_version(machine->root_dir); | |
1144 | if (!version) | |
1145 | return -1; | |
1146 | ||
61d4290c | 1147 | snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s", |
3f067dca ACM |
1148 | machine->root_dir, version); |
1149 | free(version); | |
1150 | ||
61d4290c | 1151 | return map_groups__set_modules_path_dir(&machine->kmaps, modules_path, 0); |
3f067dca | 1152 | } |
203d8a4a SSG |
1153 | int __weak arch__fix_module_text_start(u64 *start __maybe_unused, |
1154 | const char *name __maybe_unused) | |
1155 | { | |
1156 | return 0; | |
1157 | } | |
3f067dca | 1158 | |
9ad4652b TR |
1159 | static int machine__create_module(void *arg, const char *name, u64 start, |
1160 | u64 size) | |
3f067dca | 1161 | { |
316d70d6 | 1162 | struct machine *machine = arg; |
3f067dca | 1163 | struct map *map; |
316d70d6 | 1164 | |
203d8a4a SSG |
1165 | if (arch__fix_module_text_start(&start, name) < 0) |
1166 | return -1; | |
1167 | ||
9f2de315 | 1168 | map = machine__findnew_module_map(machine, start, name); |
316d70d6 AH |
1169 | if (map == NULL) |
1170 | return -1; | |
9ad4652b | 1171 | map->end = start + size; |
316d70d6 AH |
1172 | |
1173 | dso__kernel_module_get_build_id(map->dso, machine->root_dir); | |
1174 | ||
1175 | return 0; | |
1176 | } | |
1177 | ||
1178 | static int machine__create_modules(struct machine *machine) | |
1179 | { | |
3f067dca ACM |
1180 | const char *modules; |
1181 | char path[PATH_MAX]; | |
1182 | ||
f4be904d | 1183 | if (machine__is_default_guest(machine)) { |
3f067dca | 1184 | modules = symbol_conf.default_guest_modules; |
f4be904d AH |
1185 | } else { |
1186 | snprintf(path, PATH_MAX, "%s/proc/modules", machine->root_dir); | |
3f067dca ACM |
1187 | modules = path; |
1188 | } | |
1189 | ||
aa7fe3b0 | 1190 | if (symbol__restricted_filename(modules, "/proc/modules")) |
3f067dca ACM |
1191 | return -1; |
1192 | ||
316d70d6 | 1193 | if (modules__parse(modules, machine, machine__create_module)) |
3f067dca ACM |
1194 | return -1; |
1195 | ||
316d70d6 AH |
1196 | if (!machine__set_modules_path(machine)) |
1197 | return 0; | |
3f067dca | 1198 | |
316d70d6 | 1199 | pr_debug("Problems setting modules path maps, continuing anyway...\n"); |
3f067dca | 1200 | |
8f76fcd9 | 1201 | return 0; |
3f067dca ACM |
1202 | } |
1203 | ||
1fb87b8e JO |
1204 | static void machine__set_kernel_mmap(struct machine *machine, |
1205 | u64 start, u64 end) | |
1206 | { | |
1207 | int i; | |
1208 | ||
1209 | for (i = 0; i < MAP__NR_TYPES; i++) { | |
1210 | machine->vmlinux_maps[i]->start = start; | |
1211 | machine->vmlinux_maps[i]->end = end; | |
1212 | ||
1213 | /* | |
1214 | * Be a bit paranoid here, some perf.data file came with | |
1215 | * a zero sized synthesized MMAP event for the kernel. | |
1216 | */ | |
1d12cec6 | 1217 | if (start == 0 && end == 0) |
1fb87b8e JO |
1218 | machine->vmlinux_maps[i]->end = ~0ULL; |
1219 | } | |
1220 | } | |
1221 | ||
3f067dca ACM |
1222 | int machine__create_kernel_maps(struct machine *machine) |
1223 | { | |
1224 | struct dso *kernel = machine__get_kernel(machine); | |
b843f62a | 1225 | const char *name = NULL; |
ee05d217 | 1226 | struct map *map; |
b843f62a | 1227 | u64 addr = 0; |
1154c957 MH |
1228 | int ret; |
1229 | ||
45e90056 | 1230 | if (kernel == NULL) |
5512cf24 | 1231 | return -1; |
3f067dca | 1232 | |
1154c957 MH |
1233 | ret = __machine__create_kernel_maps(machine, kernel); |
1234 | dso__put(kernel); | |
1235 | if (ret < 0) | |
3f067dca ACM |
1236 | return -1; |
1237 | ||
1238 | if (symbol_conf.use_modules && machine__create_modules(machine) < 0) { | |
1239 | if (machine__is_host(machine)) | |
1240 | pr_debug("Problems creating module maps, " | |
1241 | "continuing anyway...\n"); | |
1242 | else | |
1243 | pr_debug("Problems creating module maps for guest %d, " | |
1244 | "continuing anyway...\n", machine->pid); | |
1245 | } | |
1246 | ||
3f938ee2 JO |
1247 | if (!machine__get_running_kernel_start(machine, &name, &addr)) { |
1248 | if (name && | |
1249 | maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, name, addr)) { | |
1250 | machine__destroy_kernel_maps(machine); | |
1251 | return -1; | |
1252 | } | |
ee05d217 NK |
1253 | |
1254 | /* we have a real start address now, so re-order the kmaps */ | |
1255 | map = machine__kernel_map(machine); | |
1256 | ||
1257 | map__get(map); | |
1258 | map_groups__remove(&machine->kmaps, map); | |
1259 | ||
1260 | /* assume it's the last in the kmaps */ | |
1261 | machine__set_kernel_mmap(machine, addr, ~0ULL); | |
1262 | ||
1263 | map_groups__insert(&machine->kmaps, map); | |
1264 | map__put(map); | |
5512cf24 AH |
1265 | } |
1266 | ||
ee05d217 NK |
1267 | /* update end address of the kernel map using adjacent module address */ |
1268 | map = map__next(machine__kernel_map(machine)); | |
1269 | if (map) | |
1270 | machine__set_kernel_mmap(machine, addr, map->start); | |
1271 | ||
3f067dca ACM |
1272 | return 0; |
1273 | } | |
1274 | ||
8e0cf965 AH |
1275 | static bool machine__uses_kcore(struct machine *machine) |
1276 | { | |
1277 | struct dso *dso; | |
1278 | ||
3d39ac53 | 1279 | list_for_each_entry(dso, &machine->dsos.head, node) { |
8e0cf965 AH |
1280 | if (dso__is_kcore(dso)) |
1281 | return true; | |
1282 | } | |
1283 | ||
1284 | return false; | |
1285 | } | |
1286 | ||
b0a7d1a0 ACM |
1287 | static int machine__process_kernel_mmap_event(struct machine *machine, |
1288 | union perf_event *event) | |
1289 | { | |
1290 | struct map *map; | |
b0a7d1a0 ACM |
1291 | enum dso_kernel_type kernel_type; |
1292 | bool is_kernel_mmap; | |
1293 | ||
8e0cf965 AH |
1294 | /* If we have maps from kcore then we do not need or want any others */ |
1295 | if (machine__uses_kcore(machine)) | |
1296 | return 0; | |
1297 | ||
b0a7d1a0 ACM |
1298 | if (machine__is_host(machine)) |
1299 | kernel_type = DSO_TYPE_KERNEL; | |
1300 | else | |
1301 | kernel_type = DSO_TYPE_GUEST_KERNEL; | |
1302 | ||
1303 | is_kernel_mmap = memcmp(event->mmap.filename, | |
8c7f1bb3 JO |
1304 | machine->mmap_name, |
1305 | strlen(machine->mmap_name) - 1) == 0; | |
b0a7d1a0 ACM |
1306 | if (event->mmap.filename[0] == '/' || |
1307 | (!is_kernel_mmap && event->mmap.filename[0] == '[')) { | |
9f2de315 ACM |
1308 | map = machine__findnew_module_map(machine, event->mmap.start, |
1309 | event->mmap.filename); | |
b0a7d1a0 ACM |
1310 | if (map == NULL) |
1311 | goto out_problem; | |
1312 | ||
b0a7d1a0 ACM |
1313 | map->end = map->start + event->mmap.len; |
1314 | } else if (is_kernel_mmap) { | |
1315 | const char *symbol_name = (event->mmap.filename + | |
8c7f1bb3 | 1316 | strlen(machine->mmap_name)); |
b0a7d1a0 ACM |
1317 | /* |
1318 | * Should be there already, from the build-id table in | |
1319 | * the header. | |
1320 | */ | |
b837a8bd NK |
1321 | struct dso *kernel = NULL; |
1322 | struct dso *dso; | |
1323 | ||
0a7c74ea | 1324 | down_read(&machine->dsos.lock); |
e8807844 | 1325 | |
3d39ac53 | 1326 | list_for_each_entry(dso, &machine->dsos.head, node) { |
1f121b03 WN |
1327 | |
1328 | /* | |
1329 | * The cpumode passed to is_kernel_module is not the | |
1330 | * cpumode of *this* event. If we insist on passing | |
1331 | * correct cpumode to is_kernel_module, we should | |
1332 | * record the cpumode when we adding this dso to the | |
1333 | * linked list. | |
1334 | * | |
1335 | * However we don't really need passing correct | |
1336 | * cpumode. We know the correct cpumode must be kernel | |
1337 | * mode (if not, we should not link it onto kernel_dsos | |
1338 | * list). | |
1339 | * | |
1340 | * Therefore, we pass PERF_RECORD_MISC_CPUMODE_UNKNOWN. | |
1341 | * is_kernel_module() treats it as a kernel cpumode. | |
1342 | */ | |
1343 | ||
1344 | if (!dso->kernel || | |
1345 | is_kernel_module(dso->long_name, | |
1346 | PERF_RECORD_MISC_CPUMODE_UNKNOWN)) | |
b837a8bd NK |
1347 | continue; |
1348 | ||
1f121b03 | 1349 | |
b837a8bd NK |
1350 | kernel = dso; |
1351 | break; | |
1352 | } | |
1353 | ||
0a7c74ea | 1354 | up_read(&machine->dsos.lock); |
e8807844 | 1355 | |
b837a8bd | 1356 | if (kernel == NULL) |
8c7f1bb3 | 1357 | kernel = machine__findnew_dso(machine, machine->mmap_name); |
b0a7d1a0 ACM |
1358 | if (kernel == NULL) |
1359 | goto out_problem; | |
1360 | ||
1361 | kernel->kernel = kernel_type; | |
d3a7c489 ACM |
1362 | if (__machine__create_kernel_maps(machine, kernel) < 0) { |
1363 | dso__put(kernel); | |
b0a7d1a0 | 1364 | goto out_problem; |
d3a7c489 | 1365 | } |
b0a7d1a0 | 1366 | |
330dfa22 NK |
1367 | if (strstr(kernel->long_name, "vmlinux")) |
1368 | dso__set_short_name(kernel, "[kernel.vmlinux]", false); | |
96d78059 | 1369 | |
05db6ff7 JO |
1370 | machine__set_kernel_mmap(machine, event->mmap.start, |
1371 | event->mmap.start + event->mmap.len); | |
b0a7d1a0 ACM |
1372 | |
1373 | /* | |
1374 | * Avoid using a zero address (kptr_restrict) for the ref reloc | |
1375 | * symbol. Effectively having zero here means that at record | |
1376 | * time /proc/sys/kernel/kptr_restrict was non zero. | |
1377 | */ | |
1378 | if (event->mmap.pgoff != 0) { | |
1379 | maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, | |
1380 | symbol_name, | |
1381 | event->mmap.pgoff); | |
1382 | } | |
1383 | ||
1384 | if (machine__is_default_guest(machine)) { | |
1385 | /* | |
1386 | * preload dso of guest kernel and modules | |
1387 | */ | |
be39db9f | 1388 | dso__load(kernel, machine__kernel_map(machine)); |
b0a7d1a0 ACM |
1389 | } |
1390 | } | |
1391 | return 0; | |
1392 | out_problem: | |
1393 | return -1; | |
1394 | } | |
1395 | ||
5c5e854b | 1396 | int machine__process_mmap2_event(struct machine *machine, |
162f0bef | 1397 | union perf_event *event, |
473398a2 | 1398 | struct perf_sample *sample) |
5c5e854b | 1399 | { |
5c5e854b SE |
1400 | struct thread *thread; |
1401 | struct map *map; | |
1402 | enum map_type type; | |
1403 | int ret = 0; | |
1404 | ||
1405 | if (dump_trace) | |
1406 | perf_event__fprintf_mmap2(event, stdout); | |
1407 | ||
473398a2 ACM |
1408 | if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL || |
1409 | sample->cpumode == PERF_RECORD_MISC_KERNEL) { | |
5c5e854b SE |
1410 | ret = machine__process_kernel_mmap_event(machine, event); |
1411 | if (ret < 0) | |
1412 | goto out_problem; | |
1413 | return 0; | |
1414 | } | |
1415 | ||
1416 | thread = machine__findnew_thread(machine, event->mmap2.pid, | |
11c9abf2 | 1417 | event->mmap2.tid); |
5c5e854b SE |
1418 | if (thread == NULL) |
1419 | goto out_problem; | |
1420 | ||
1421 | if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) | |
1422 | type = MAP__VARIABLE; | |
1423 | else | |
1424 | type = MAP__FUNCTION; | |
1425 | ||
2a03068c | 1426 | map = map__new(machine, event->mmap2.start, |
5c5e854b | 1427 | event->mmap2.len, event->mmap2.pgoff, |
bf2e710b | 1428 | event->mmap2.maj, |
5c5e854b SE |
1429 | event->mmap2.min, event->mmap2.ino, |
1430 | event->mmap2.ino_generation, | |
7ef80703 DZ |
1431 | event->mmap2.prot, |
1432 | event->mmap2.flags, | |
5835edda | 1433 | event->mmap2.filename, type, thread); |
5c5e854b SE |
1434 | |
1435 | if (map == NULL) | |
b91fc39f | 1436 | goto out_problem_map; |
5c5e854b | 1437 | |
8132a2a8 HK |
1438 | ret = thread__insert_map(thread, map); |
1439 | if (ret) | |
1440 | goto out_problem_insert; | |
1441 | ||
b91fc39f | 1442 | thread__put(thread); |
84c2cafa | 1443 | map__put(map); |
5c5e854b SE |
1444 | return 0; |
1445 | ||
8132a2a8 HK |
1446 | out_problem_insert: |
1447 | map__put(map); | |
b91fc39f ACM |
1448 | out_problem_map: |
1449 | thread__put(thread); | |
5c5e854b SE |
1450 | out_problem: |
1451 | dump_printf("problem processing PERF_RECORD_MMAP2, skipping event.\n"); | |
1452 | return 0; | |
1453 | } | |
1454 | ||
162f0bef | 1455 | int machine__process_mmap_event(struct machine *machine, union perf_event *event, |
473398a2 | 1456 | struct perf_sample *sample) |
b0a7d1a0 | 1457 | { |
b0a7d1a0 ACM |
1458 | struct thread *thread; |
1459 | struct map *map; | |
bad40917 | 1460 | enum map_type type; |
0f476f2b | 1461 | u32 prot = 0; |
b0a7d1a0 ACM |
1462 | int ret = 0; |
1463 | ||
1464 | if (dump_trace) | |
1465 | perf_event__fprintf_mmap(event, stdout); | |
1466 | ||
473398a2 ACM |
1467 | if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL || |
1468 | sample->cpumode == PERF_RECORD_MISC_KERNEL) { | |
b0a7d1a0 ACM |
1469 | ret = machine__process_kernel_mmap_event(machine, event); |
1470 | if (ret < 0) | |
1471 | goto out_problem; | |
1472 | return 0; | |
1473 | } | |
1474 | ||
314add6b | 1475 | thread = machine__findnew_thread(machine, event->mmap.pid, |
11c9abf2 | 1476 | event->mmap.tid); |
b0a7d1a0 ACM |
1477 | if (thread == NULL) |
1478 | goto out_problem; | |
bad40917 SE |
1479 | |
1480 | if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) | |
1481 | type = MAP__VARIABLE; | |
0f476f2b | 1482 | else { |
bad40917 | 1483 | type = MAP__FUNCTION; |
0f476f2b ACM |
1484 | prot = PROT_EXEC; |
1485 | } | |
bad40917 | 1486 | |
2a03068c | 1487 | map = map__new(machine, event->mmap.start, |
b0a7d1a0 | 1488 | event->mmap.len, event->mmap.pgoff, |
0f476f2b | 1489 | 0, 0, 0, 0, prot, 0, |
5c5e854b | 1490 | event->mmap.filename, |
5835edda | 1491 | type, thread); |
bad40917 | 1492 | |
b0a7d1a0 | 1493 | if (map == NULL) |
b91fc39f | 1494 | goto out_problem_map; |
b0a7d1a0 | 1495 | |
8132a2a8 HK |
1496 | ret = thread__insert_map(thread, map); |
1497 | if (ret) | |
1498 | goto out_problem_insert; | |
1499 | ||
b91fc39f | 1500 | thread__put(thread); |
84c2cafa | 1501 | map__put(map); |
b0a7d1a0 ACM |
1502 | return 0; |
1503 | ||
8132a2a8 HK |
1504 | out_problem_insert: |
1505 | map__put(map); | |
b91fc39f ACM |
1506 | out_problem_map: |
1507 | thread__put(thread); | |
b0a7d1a0 ACM |
1508 | out_problem: |
1509 | dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); | |
1510 | return 0; | |
1511 | } | |
1512 | ||
b91fc39f | 1513 | static void __machine__remove_thread(struct machine *machine, struct thread *th, bool lock) |
236a3bbd | 1514 | { |
91e467bc KL |
1515 | struct threads *threads = machine__threads(machine, th->tid); |
1516 | ||
1517 | if (threads->last_match == th) | |
1518 | threads->last_match = NULL; | |
f3b623b8 | 1519 | |
e34f5b11 | 1520 | BUG_ON(refcount_read(&th->refcnt) == 0); |
b91fc39f | 1521 | if (lock) |
0a7c74ea | 1522 | down_write(&threads->lock); |
91e467bc | 1523 | rb_erase_init(&th->rb_node, &threads->entries); |
b91fc39f | 1524 | RB_CLEAR_NODE(&th->rb_node); |
91e467bc | 1525 | --threads->nr; |
236a3bbd | 1526 | /* |
f3b623b8 ACM |
1527 | * Move it first to the dead_threads list, then drop the reference, |
1528 | * if this is the last reference, then the thread__delete destructor | |
1529 | * will be called and we will remove it from the dead_threads list. | |
236a3bbd | 1530 | */ |
91e467bc | 1531 | list_add_tail(&th->node, &threads->dead); |
b91fc39f | 1532 | if (lock) |
0a7c74ea | 1533 | up_write(&threads->lock); |
f3b623b8 | 1534 | thread__put(th); |
236a3bbd DA |
1535 | } |
1536 | ||
b91fc39f ACM |
1537 | void machine__remove_thread(struct machine *machine, struct thread *th) |
1538 | { | |
1539 | return __machine__remove_thread(machine, th, true); | |
1540 | } | |
1541 | ||
162f0bef FW |
1542 | int machine__process_fork_event(struct machine *machine, union perf_event *event, |
1543 | struct perf_sample *sample) | |
b0a7d1a0 | 1544 | { |
d75e6097 JO |
1545 | struct thread *thread = machine__find_thread(machine, |
1546 | event->fork.pid, | |
1547 | event->fork.tid); | |
314add6b AH |
1548 | struct thread *parent = machine__findnew_thread(machine, |
1549 | event->fork.ppid, | |
1550 | event->fork.ptid); | |
b91fc39f | 1551 | int err = 0; |
b0a7d1a0 | 1552 | |
5cb73340 AH |
1553 | if (dump_trace) |
1554 | perf_event__fprintf_task(event, stdout); | |
1555 | ||
1556 | /* | |
1557 | * There may be an existing thread that is not actually the parent, | |
1558 | * either because we are processing events out of order, or because the | |
1559 | * (fork) event that would have removed the thread was lost. Assume the | |
1560 | * latter case and continue on as best we can. | |
1561 | */ | |
1562 | if (parent->pid_ != (pid_t)event->fork.ppid) { | |
1563 | dump_printf("removing erroneous parent thread %d/%d\n", | |
1564 | parent->pid_, parent->tid); | |
1565 | machine__remove_thread(machine, parent); | |
1566 | thread__put(parent); | |
1567 | parent = machine__findnew_thread(machine, event->fork.ppid, | |
1568 | event->fork.ptid); | |
1569 | } | |
1570 | ||
236a3bbd | 1571 | /* if a thread currently exists for the thread id remove it */ |
b91fc39f | 1572 | if (thread != NULL) { |
236a3bbd | 1573 | machine__remove_thread(machine, thread); |
b91fc39f ACM |
1574 | thread__put(thread); |
1575 | } | |
236a3bbd | 1576 | |
314add6b AH |
1577 | thread = machine__findnew_thread(machine, event->fork.pid, |
1578 | event->fork.tid); | |
b0a7d1a0 ACM |
1579 | |
1580 | if (thread == NULL || parent == NULL || | |
162f0bef | 1581 | thread__fork(thread, parent, sample->time) < 0) { |
b0a7d1a0 | 1582 | dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); |
b91fc39f | 1583 | err = -1; |
b0a7d1a0 | 1584 | } |
b91fc39f ACM |
1585 | thread__put(thread); |
1586 | thread__put(parent); | |
b0a7d1a0 | 1587 | |
b91fc39f | 1588 | return err; |
b0a7d1a0 ACM |
1589 | } |
1590 | ||
162f0bef FW |
1591 | int machine__process_exit_event(struct machine *machine, union perf_event *event, |
1592 | struct perf_sample *sample __maybe_unused) | |
b0a7d1a0 | 1593 | { |
d75e6097 JO |
1594 | struct thread *thread = machine__find_thread(machine, |
1595 | event->fork.pid, | |
1596 | event->fork.tid); | |
b0a7d1a0 ACM |
1597 | |
1598 | if (dump_trace) | |
1599 | perf_event__fprintf_task(event, stdout); | |
1600 | ||
b91fc39f | 1601 | if (thread != NULL) { |
236a3bbd | 1602 | thread__exited(thread); |
b91fc39f ACM |
1603 | thread__put(thread); |
1604 | } | |
b0a7d1a0 ACM |
1605 | |
1606 | return 0; | |
1607 | } | |
1608 | ||
162f0bef FW |
1609 | int machine__process_event(struct machine *machine, union perf_event *event, |
1610 | struct perf_sample *sample) | |
b0a7d1a0 ACM |
1611 | { |
1612 | int ret; | |
1613 | ||
1614 | switch (event->header.type) { | |
1615 | case PERF_RECORD_COMM: | |
162f0bef | 1616 | ret = machine__process_comm_event(machine, event, sample); break; |
b0a7d1a0 | 1617 | case PERF_RECORD_MMAP: |
162f0bef | 1618 | ret = machine__process_mmap_event(machine, event, sample); break; |
f3b3614a HB |
1619 | case PERF_RECORD_NAMESPACES: |
1620 | ret = machine__process_namespaces_event(machine, event, sample); break; | |
5c5e854b | 1621 | case PERF_RECORD_MMAP2: |
162f0bef | 1622 | ret = machine__process_mmap2_event(machine, event, sample); break; |
b0a7d1a0 | 1623 | case PERF_RECORD_FORK: |
162f0bef | 1624 | ret = machine__process_fork_event(machine, event, sample); break; |
b0a7d1a0 | 1625 | case PERF_RECORD_EXIT: |
162f0bef | 1626 | ret = machine__process_exit_event(machine, event, sample); break; |
b0a7d1a0 | 1627 | case PERF_RECORD_LOST: |
162f0bef | 1628 | ret = machine__process_lost_event(machine, event, sample); break; |
4a96f7a0 AH |
1629 | case PERF_RECORD_AUX: |
1630 | ret = machine__process_aux_event(machine, event); break; | |
0ad21f68 | 1631 | case PERF_RECORD_ITRACE_START: |
ceb92913 | 1632 | ret = machine__process_itrace_start_event(machine, event); break; |
c4937a91 KL |
1633 | case PERF_RECORD_LOST_SAMPLES: |
1634 | ret = machine__process_lost_samples_event(machine, event, sample); break; | |
0286039f AH |
1635 | case PERF_RECORD_SWITCH: |
1636 | case PERF_RECORD_SWITCH_CPU_WIDE: | |
1637 | ret = machine__process_switch_event(machine, event); break; | |
b0a7d1a0 ACM |
1638 | default: |
1639 | ret = -1; | |
1640 | break; | |
1641 | } | |
1642 | ||
1643 | return ret; | |
1644 | } | |
3f067dca | 1645 | |
b21484f1 | 1646 | static bool symbol__match_regex(struct symbol *sym, regex_t *regex) |
3f067dca | 1647 | { |
a7c3899c | 1648 | if (!regexec(regex, sym->name, 0, NULL, 0)) |
3f067dca | 1649 | return 1; |
3f067dca ACM |
1650 | return 0; |
1651 | } | |
1652 | ||
bb871a9c | 1653 | static void ip__resolve_ams(struct thread *thread, |
3f067dca ACM |
1654 | struct addr_map_symbol *ams, |
1655 | u64 ip) | |
1656 | { | |
1657 | struct addr_location al; | |
3f067dca ACM |
1658 | |
1659 | memset(&al, 0, sizeof(al)); | |
52a3cb8c ACM |
1660 | /* |
1661 | * We cannot use the header.misc hint to determine whether a | |
1662 | * branch stack address is user, kernel, guest, hypervisor. | |
1663 | * Branches may straddle the kernel/user/hypervisor boundaries. | |
1664 | * Thus, we have to try consecutively until we find a match | |
1665 | * or else, the symbol is unknown | |
1666 | */ | |
26bd9331 | 1667 | thread__find_cpumode_addr_location(thread, ip, &al); |
3f067dca | 1668 | |
3f067dca ACM |
1669 | ams->addr = ip; |
1670 | ams->al_addr = al.addr; | |
1671 | ams->sym = al.sym; | |
1672 | ams->map = al.map; | |
8780fb25 | 1673 | ams->phys_addr = 0; |
3f067dca ACM |
1674 | } |
1675 | ||
bb871a9c | 1676 | static void ip__resolve_data(struct thread *thread, |
8780fb25 KL |
1677 | u8 m, struct addr_map_symbol *ams, |
1678 | u64 addr, u64 phys_addr) | |
98a3b32c SE |
1679 | { |
1680 | struct addr_location al; | |
1681 | ||
1682 | memset(&al, 0, sizeof(al)); | |
1683 | ||
117d3c24 | 1684 | thread__find_symbol(thread, m, addr, &al); |
06b2afc0 | 1685 | |
98a3b32c SE |
1686 | ams->addr = addr; |
1687 | ams->al_addr = al.addr; | |
1688 | ams->sym = al.sym; | |
1689 | ams->map = al.map; | |
8780fb25 | 1690 | ams->phys_addr = phys_addr; |
98a3b32c SE |
1691 | } |
1692 | ||
e80faac0 ACM |
1693 | struct mem_info *sample__resolve_mem(struct perf_sample *sample, |
1694 | struct addr_location *al) | |
98a3b32c | 1695 | { |
9f87498f | 1696 | struct mem_info *mi = mem_info__new(); |
98a3b32c SE |
1697 | |
1698 | if (!mi) | |
1699 | return NULL; | |
1700 | ||
bb871a9c | 1701 | ip__resolve_ams(al->thread, &mi->iaddr, sample->ip); |
8780fb25 KL |
1702 | ip__resolve_data(al->thread, al->cpumode, &mi->daddr, |
1703 | sample->addr, sample->phys_addr); | |
98a3b32c SE |
1704 | mi->data_src.val = sample->data_src; |
1705 | ||
1706 | return mi; | |
1707 | } | |
1708 | ||
40a342cd MW |
1709 | static char *callchain_srcline(struct map *map, struct symbol *sym, u64 ip) |
1710 | { | |
21ac9d54 MW |
1711 | char *srcline = NULL; |
1712 | ||
40a342cd | 1713 | if (!map || callchain_param.key == CCKEY_FUNCTION) |
21ac9d54 MW |
1714 | return srcline; |
1715 | ||
1716 | srcline = srcline__tree_find(&map->dso->srclines, ip); | |
1717 | if (!srcline) { | |
1718 | bool show_sym = false; | |
1719 | bool show_addr = callchain_param.key == CCKEY_ADDRESS; | |
1720 | ||
1721 | srcline = get_srcline(map->dso, map__rip_2objdump(map, ip), | |
935f5a9d | 1722 | sym, show_sym, show_addr, ip); |
21ac9d54 MW |
1723 | srcline__tree_insert(&map->dso->srclines, ip, srcline); |
1724 | } | |
40a342cd | 1725 | |
21ac9d54 | 1726 | return srcline; |
40a342cd MW |
1727 | } |
1728 | ||
c4ee0625 JY |
1729 | struct iterations { |
1730 | int nr_loop_iter; | |
1731 | u64 cycles; | |
1732 | }; | |
1733 | ||
37592b8a | 1734 | static int add_callchain_ip(struct thread *thread, |
91d7b2de | 1735 | struct callchain_cursor *cursor, |
37592b8a AK |
1736 | struct symbol **parent, |
1737 | struct addr_location *root_al, | |
73dbcd65 | 1738 | u8 *cpumode, |
410024db JY |
1739 | u64 ip, |
1740 | bool branch, | |
1741 | struct branch_flags *flags, | |
c4ee0625 | 1742 | struct iterations *iter, |
b851dd49 | 1743 | u64 branch_from) |
37592b8a AK |
1744 | { |
1745 | struct addr_location al; | |
c4ee0625 JY |
1746 | int nr_loop_iter = 0; |
1747 | u64 iter_cycles = 0; | |
40a342cd | 1748 | const char *srcline = NULL; |
37592b8a AK |
1749 | |
1750 | al.filtered = 0; | |
1751 | al.sym = NULL; | |
73dbcd65 | 1752 | if (!cpumode) { |
26bd9331 | 1753 | thread__find_cpumode_addr_location(thread, ip, &al); |
73dbcd65 | 1754 | } else { |
2e77784b KL |
1755 | if (ip >= PERF_CONTEXT_MAX) { |
1756 | switch (ip) { | |
1757 | case PERF_CONTEXT_HV: | |
73dbcd65 | 1758 | *cpumode = PERF_RECORD_MISC_HYPERVISOR; |
2e77784b KL |
1759 | break; |
1760 | case PERF_CONTEXT_KERNEL: | |
73dbcd65 | 1761 | *cpumode = PERF_RECORD_MISC_KERNEL; |
2e77784b KL |
1762 | break; |
1763 | case PERF_CONTEXT_USER: | |
73dbcd65 | 1764 | *cpumode = PERF_RECORD_MISC_USER; |
2e77784b KL |
1765 | break; |
1766 | default: | |
1767 | pr_debug("invalid callchain context: " | |
1768 | "%"PRId64"\n", (s64) ip); | |
1769 | /* | |
1770 | * It seems the callchain is corrupted. | |
1771 | * Discard all. | |
1772 | */ | |
91d7b2de | 1773 | callchain_cursor_reset(cursor); |
2e77784b KL |
1774 | return 1; |
1775 | } | |
1776 | return 0; | |
1777 | } | |
4546263d | 1778 | thread__find_symbol(thread, *cpumode, ip, &al); |
2e77784b KL |
1779 | } |
1780 | ||
37592b8a | 1781 | if (al.sym != NULL) { |
de7e6a7c | 1782 | if (perf_hpp_list.parent && !*parent && |
37592b8a AK |
1783 | symbol__match_regex(al.sym, &parent_regex)) |
1784 | *parent = al.sym; | |
1785 | else if (have_ignore_callees && root_al && | |
1786 | symbol__match_regex(al.sym, &ignore_callees_regex)) { | |
1787 | /* Treat this symbol as the root, | |
1788 | forgetting its callees. */ | |
1789 | *root_al = al; | |
91d7b2de | 1790 | callchain_cursor_reset(cursor); |
37592b8a AK |
1791 | } |
1792 | } | |
1793 | ||
b49a8fe5 NK |
1794 | if (symbol_conf.hide_unresolved && al.sym == NULL) |
1795 | return 0; | |
c4ee0625 JY |
1796 | |
1797 | if (iter) { | |
1798 | nr_loop_iter = iter->nr_loop_iter; | |
1799 | iter_cycles = iter->cycles; | |
1800 | } | |
1801 | ||
40a342cd | 1802 | srcline = callchain_srcline(al.map, al.sym, al.addr); |
410024db | 1803 | return callchain_cursor_append(cursor, al.addr, al.map, al.sym, |
c4ee0625 | 1804 | branch, flags, nr_loop_iter, |
40a342cd | 1805 | iter_cycles, branch_from, srcline); |
37592b8a AK |
1806 | } |
1807 | ||
644f2df2 ACM |
1808 | struct branch_info *sample__resolve_bstack(struct perf_sample *sample, |
1809 | struct addr_location *al) | |
3f067dca | 1810 | { |
3f067dca | 1811 | unsigned int i; |
644f2df2 ACM |
1812 | const struct branch_stack *bs = sample->branch_stack; |
1813 | struct branch_info *bi = calloc(bs->nr, sizeof(struct branch_info)); | |
3f067dca | 1814 | |
3f067dca ACM |
1815 | if (!bi) |
1816 | return NULL; | |
1817 | ||
1818 | for (i = 0; i < bs->nr; i++) { | |
bb871a9c ACM |
1819 | ip__resolve_ams(al->thread, &bi[i].to, bs->entries[i].to); |
1820 | ip__resolve_ams(al->thread, &bi[i].from, bs->entries[i].from); | |
3f067dca ACM |
1821 | bi[i].flags = bs->entries[i].flags; |
1822 | } | |
1823 | return bi; | |
1824 | } | |
1825 | ||
c4ee0625 JY |
1826 | static void save_iterations(struct iterations *iter, |
1827 | struct branch_entry *be, int nr) | |
1828 | { | |
1829 | int i; | |
1830 | ||
1831 | iter->nr_loop_iter = nr; | |
1832 | iter->cycles = 0; | |
1833 | ||
1834 | for (i = 0; i < nr; i++) | |
1835 | iter->cycles += be[i].flags.cycles; | |
1836 | } | |
1837 | ||
8b7bad58 AK |
1838 | #define CHASHSZ 127 |
1839 | #define CHASHBITS 7 | |
1840 | #define NO_ENTRY 0xff | |
1841 | ||
1842 | #define PERF_MAX_BRANCH_DEPTH 127 | |
1843 | ||
1844 | /* Remove loops. */ | |
c4ee0625 JY |
1845 | static int remove_loops(struct branch_entry *l, int nr, |
1846 | struct iterations *iter) | |
8b7bad58 AK |
1847 | { |
1848 | int i, j, off; | |
1849 | unsigned char chash[CHASHSZ]; | |
1850 | ||
1851 | memset(chash, NO_ENTRY, sizeof(chash)); | |
1852 | ||
1853 | BUG_ON(PERF_MAX_BRANCH_DEPTH > 255); | |
1854 | ||
1855 | for (i = 0; i < nr; i++) { | |
1856 | int h = hash_64(l[i].from, CHASHBITS) % CHASHSZ; | |
1857 | ||
1858 | /* no collision handling for now */ | |
1859 | if (chash[h] == NO_ENTRY) { | |
1860 | chash[h] = i; | |
1861 | } else if (l[chash[h]].from == l[i].from) { | |
1862 | bool is_loop = true; | |
1863 | /* check if it is a real loop */ | |
1864 | off = 0; | |
1865 | for (j = chash[h]; j < i && i + off < nr; j++, off++) | |
1866 | if (l[j].from != l[i + off].from) { | |
1867 | is_loop = false; | |
1868 | break; | |
1869 | } | |
1870 | if (is_loop) { | |
c4ee0625 JY |
1871 | j = nr - (i + off); |
1872 | if (j > 0) { | |
1873 | save_iterations(iter + i + off, | |
1874 | l + i, off); | |
1875 | ||
1876 | memmove(iter + i, iter + i + off, | |
1877 | j * sizeof(*iter)); | |
1878 | ||
1879 | memmove(l + i, l + i + off, | |
1880 | j * sizeof(*l)); | |
1881 | } | |
1882 | ||
8b7bad58 AK |
1883 | nr -= off; |
1884 | } | |
1885 | } | |
1886 | } | |
1887 | return nr; | |
1888 | } | |
1889 | ||
384b6055 KL |
1890 | /* |
1891 | * Recolve LBR callstack chain sample | |
1892 | * Return: | |
1893 | * 1 on success get LBR callchain information | |
1894 | * 0 no available LBR callchain information, should try fp | |
1895 | * negative error code on other errors. | |
1896 | */ | |
1897 | static int resolve_lbr_callchain_sample(struct thread *thread, | |
91d7b2de | 1898 | struct callchain_cursor *cursor, |
384b6055 KL |
1899 | struct perf_sample *sample, |
1900 | struct symbol **parent, | |
1901 | struct addr_location *root_al, | |
1902 | int max_stack) | |
3f067dca | 1903 | { |
384b6055 | 1904 | struct ip_callchain *chain = sample->callchain; |
18ef15c6 | 1905 | int chain_nr = min(max_stack, (int)chain->nr), i; |
73dbcd65 | 1906 | u8 cpumode = PERF_RECORD_MISC_USER; |
b851dd49 | 1907 | u64 ip, branch_from = 0; |
384b6055 KL |
1908 | |
1909 | for (i = 0; i < chain_nr; i++) { | |
1910 | if (chain->ips[i] == PERF_CONTEXT_USER) | |
1911 | break; | |
1912 | } | |
1913 | ||
1914 | /* LBR only affects the user callchain */ | |
1915 | if (i != chain_nr) { | |
1916 | struct branch_stack *lbr_stack = sample->branch_stack; | |
410024db JY |
1917 | int lbr_nr = lbr_stack->nr, j, k; |
1918 | bool branch; | |
1919 | struct branch_flags *flags; | |
384b6055 KL |
1920 | /* |
1921 | * LBR callstack can only get user call chain. | |
1922 | * The mix_chain_nr is kernel call chain | |
1923 | * number plus LBR user call chain number. | |
1924 | * i is kernel call chain number, | |
1925 | * 1 is PERF_CONTEXT_USER, | |
1926 | * lbr_nr + 1 is the user call chain number. | |
1927 | * For details, please refer to the comments | |
1928 | * in callchain__printf | |
1929 | */ | |
1930 | int mix_chain_nr = i + 1 + lbr_nr + 1; | |
1931 | ||
384b6055 | 1932 | for (j = 0; j < mix_chain_nr; j++) { |
18ef15c6 | 1933 | int err; |
410024db JY |
1934 | branch = false; |
1935 | flags = NULL; | |
1936 | ||
384b6055 KL |
1937 | if (callchain_param.order == ORDER_CALLEE) { |
1938 | if (j < i + 1) | |
1939 | ip = chain->ips[j]; | |
410024db JY |
1940 | else if (j > i + 1) { |
1941 | k = j - i - 2; | |
1942 | ip = lbr_stack->entries[k].from; | |
1943 | branch = true; | |
1944 | flags = &lbr_stack->entries[k].flags; | |
1945 | } else { | |
384b6055 | 1946 | ip = lbr_stack->entries[0].to; |
410024db JY |
1947 | branch = true; |
1948 | flags = &lbr_stack->entries[0].flags; | |
b851dd49 JY |
1949 | branch_from = |
1950 | lbr_stack->entries[0].from; | |
410024db | 1951 | } |
384b6055 | 1952 | } else { |
410024db JY |
1953 | if (j < lbr_nr) { |
1954 | k = lbr_nr - j - 1; | |
1955 | ip = lbr_stack->entries[k].from; | |
1956 | branch = true; | |
1957 | flags = &lbr_stack->entries[k].flags; | |
1958 | } | |
384b6055 KL |
1959 | else if (j > lbr_nr) |
1960 | ip = chain->ips[i + 1 - (j - lbr_nr)]; | |
410024db | 1961 | else { |
384b6055 | 1962 | ip = lbr_stack->entries[0].to; |
410024db JY |
1963 | branch = true; |
1964 | flags = &lbr_stack->entries[0].flags; | |
b851dd49 JY |
1965 | branch_from = |
1966 | lbr_stack->entries[0].from; | |
410024db | 1967 | } |
384b6055 KL |
1968 | } |
1969 | ||
410024db JY |
1970 | err = add_callchain_ip(thread, cursor, parent, |
1971 | root_al, &cpumode, ip, | |
c4ee0625 | 1972 | branch, flags, NULL, |
b851dd49 | 1973 | branch_from); |
384b6055 KL |
1974 | if (err) |
1975 | return (err < 0) ? err : 0; | |
1976 | } | |
1977 | return 1; | |
1978 | } | |
1979 | ||
1980 | return 0; | |
1981 | } | |
1982 | ||
1983 | static int thread__resolve_callchain_sample(struct thread *thread, | |
91d7b2de | 1984 | struct callchain_cursor *cursor, |
384b6055 KL |
1985 | struct perf_evsel *evsel, |
1986 | struct perf_sample *sample, | |
1987 | struct symbol **parent, | |
1988 | struct addr_location *root_al, | |
1989 | int max_stack) | |
1990 | { | |
1991 | struct branch_stack *branch = sample->branch_stack; | |
1992 | struct ip_callchain *chain = sample->callchain; | |
b49a821e | 1993 | int chain_nr = 0; |
73dbcd65 | 1994 | u8 cpumode = PERF_RECORD_MISC_USER; |
bf8bddbf | 1995 | int i, j, err, nr_entries; |
8b7bad58 AK |
1996 | int skip_idx = -1; |
1997 | int first_call = 0; | |
1998 | ||
b49a821e JY |
1999 | if (chain) |
2000 | chain_nr = chain->nr; | |
2001 | ||
acf2abbd | 2002 | if (perf_evsel__has_branch_callstack(evsel)) { |
91d7b2de | 2003 | err = resolve_lbr_callchain_sample(thread, cursor, sample, parent, |
384b6055 KL |
2004 | root_al, max_stack); |
2005 | if (err) | |
2006 | return (err < 0) ? err : 0; | |
2007 | } | |
2008 | ||
8b7bad58 AK |
2009 | /* |
2010 | * Based on DWARF debug information, some architectures skip | |
2011 | * a callchain entry saved by the kernel. | |
2012 | */ | |
bf8bddbf | 2013 | skip_idx = arch_skip_callchain_idx(thread, chain); |
3f067dca | 2014 | |
8b7bad58 AK |
2015 | /* |
2016 | * Add branches to call stack for easier browsing. This gives | |
2017 | * more context for a sample than just the callers. | |
2018 | * | |
2019 | * This uses individual histograms of paths compared to the | |
2020 | * aggregated histograms the normal LBR mode uses. | |
2021 | * | |
2022 | * Limitations for now: | |
2023 | * - No extra filters | |
2024 | * - No annotations (should annotate somehow) | |
2025 | */ | |
2026 | ||
2027 | if (branch && callchain_param.branch_callstack) { | |
2028 | int nr = min(max_stack, (int)branch->nr); | |
2029 | struct branch_entry be[nr]; | |
c4ee0625 | 2030 | struct iterations iter[nr]; |
8b7bad58 AK |
2031 | |
2032 | if (branch->nr > PERF_MAX_BRANCH_DEPTH) { | |
2033 | pr_warning("corrupted branch chain. skipping...\n"); | |
2034 | goto check_calls; | |
2035 | } | |
2036 | ||
2037 | for (i = 0; i < nr; i++) { | |
2038 | if (callchain_param.order == ORDER_CALLEE) { | |
2039 | be[i] = branch->entries[i]; | |
b49a821e JY |
2040 | |
2041 | if (chain == NULL) | |
2042 | continue; | |
2043 | ||
8b7bad58 AK |
2044 | /* |
2045 | * Check for overlap into the callchain. | |
2046 | * The return address is one off compared to | |
2047 | * the branch entry. To adjust for this | |
2048 | * assume the calling instruction is not longer | |
2049 | * than 8 bytes. | |
2050 | */ | |
2051 | if (i == skip_idx || | |
2052 | chain->ips[first_call] >= PERF_CONTEXT_MAX) | |
2053 | first_call++; | |
2054 | else if (be[i].from < chain->ips[first_call] && | |
2055 | be[i].from >= chain->ips[first_call] - 8) | |
2056 | first_call++; | |
2057 | } else | |
2058 | be[i] = branch->entries[branch->nr - i - 1]; | |
2059 | } | |
2060 | ||
c4ee0625 JY |
2061 | memset(iter, 0, sizeof(struct iterations) * nr); |
2062 | nr = remove_loops(be, nr, iter); | |
410024db | 2063 | |
8b7bad58 | 2064 | for (i = 0; i < nr; i++) { |
c4ee0625 JY |
2065 | err = add_callchain_ip(thread, cursor, parent, |
2066 | root_al, | |
2067 | NULL, be[i].to, | |
2068 | true, &be[i].flags, | |
2069 | NULL, be[i].from); | |
410024db | 2070 | |
8b7bad58 | 2071 | if (!err) |
91d7b2de | 2072 | err = add_callchain_ip(thread, cursor, parent, root_al, |
410024db JY |
2073 | NULL, be[i].from, |
2074 | true, &be[i].flags, | |
c4ee0625 | 2075 | &iter[i], 0); |
8b7bad58 AK |
2076 | if (err == -EINVAL) |
2077 | break; | |
2078 | if (err) | |
2079 | return err; | |
2080 | } | |
b49a821e JY |
2081 | |
2082 | if (chain_nr == 0) | |
2083 | return 0; | |
2084 | ||
8b7bad58 AK |
2085 | chain_nr -= nr; |
2086 | } | |
2087 | ||
2088 | check_calls: | |
bf8bddbf | 2089 | for (i = first_call, nr_entries = 0; |
a29d5c9b | 2090 | i < chain_nr && nr_entries < max_stack; i++) { |
3f067dca | 2091 | u64 ip; |
3f067dca ACM |
2092 | |
2093 | if (callchain_param.order == ORDER_CALLEE) | |
a60335ba | 2094 | j = i; |
3f067dca | 2095 | else |
a60335ba SB |
2096 | j = chain->nr - i - 1; |
2097 | ||
2098 | #ifdef HAVE_SKIP_CALLCHAIN_IDX | |
2099 | if (j == skip_idx) | |
2100 | continue; | |
2101 | #endif | |
2102 | ip = chain->ips[j]; | |
3f067dca | 2103 | |
bf8bddbf ACM |
2104 | if (ip < PERF_CONTEXT_MAX) |
2105 | ++nr_entries; | |
a29d5c9b | 2106 | |
410024db JY |
2107 | err = add_callchain_ip(thread, cursor, parent, |
2108 | root_al, &cpumode, ip, | |
c4ee0625 | 2109 | false, NULL, NULL, 0); |
3f067dca | 2110 | |
3f067dca | 2111 | if (err) |
2e77784b | 2112 | return (err < 0) ? err : 0; |
3f067dca ACM |
2113 | } |
2114 | ||
2115 | return 0; | |
2116 | } | |
2117 | ||
11ea2515 MW |
2118 | static int append_inlines(struct callchain_cursor *cursor, |
2119 | struct map *map, struct symbol *sym, u64 ip) | |
2120 | { | |
2121 | struct inline_node *inline_node; | |
2122 | struct inline_list *ilist; | |
2123 | u64 addr; | |
b38775cf | 2124 | int ret = 1; |
11ea2515 MW |
2125 | |
2126 | if (!symbol_conf.inline_name || !map || !sym) | |
b38775cf | 2127 | return ret; |
11ea2515 MW |
2128 | |
2129 | addr = map__rip_2objdump(map, ip); | |
2130 | ||
2131 | inline_node = inlines__tree_find(&map->dso->inlined_nodes, addr); | |
2132 | if (!inline_node) { | |
2133 | inline_node = dso__parse_addr_inlines(map->dso, addr, sym); | |
2134 | if (!inline_node) | |
b38775cf | 2135 | return ret; |
11ea2515 MW |
2136 | inlines__tree_insert(&map->dso->inlined_nodes, inline_node); |
2137 | } | |
2138 | ||
2139 | list_for_each_entry(ilist, &inline_node->val, list) { | |
b38775cf MW |
2140 | ret = callchain_cursor_append(cursor, ip, map, |
2141 | ilist->symbol, false, | |
2142 | NULL, 0, 0, 0, ilist->srcline); | |
11ea2515 MW |
2143 | |
2144 | if (ret != 0) | |
2145 | return ret; | |
2146 | } | |
2147 | ||
b38775cf | 2148 | return ret; |
11ea2515 MW |
2149 | } |
2150 | ||
3f067dca ACM |
2151 | static int unwind_entry(struct unwind_entry *entry, void *arg) |
2152 | { | |
2153 | struct callchain_cursor *cursor = arg; | |
40a342cd | 2154 | const char *srcline = NULL; |
b49a8fe5 NK |
2155 | |
2156 | if (symbol_conf.hide_unresolved && entry->sym == NULL) | |
2157 | return 0; | |
40a342cd | 2158 | |
11ea2515 MW |
2159 | if (append_inlines(cursor, entry->map, entry->sym, entry->ip) == 0) |
2160 | return 0; | |
2161 | ||
40a342cd | 2162 | srcline = callchain_srcline(entry->map, entry->sym, entry->ip); |
3f067dca | 2163 | return callchain_cursor_append(cursor, entry->ip, |
410024db | 2164 | entry->map, entry->sym, |
40a342cd | 2165 | false, NULL, 0, 0, 0, srcline); |
3f067dca ACM |
2166 | } |
2167 | ||
9919a65e CP |
2168 | static int thread__resolve_callchain_unwind(struct thread *thread, |
2169 | struct callchain_cursor *cursor, | |
2170 | struct perf_evsel *evsel, | |
2171 | struct perf_sample *sample, | |
2172 | int max_stack) | |
3f067dca | 2173 | { |
3f067dca ACM |
2174 | /* Can we do dwarf post unwind? */ |
2175 | if (!((evsel->attr.sample_type & PERF_SAMPLE_REGS_USER) && | |
2176 | (evsel->attr.sample_type & PERF_SAMPLE_STACK_USER))) | |
2177 | return 0; | |
2178 | ||
2179 | /* Bail out if nothing was captured. */ | |
2180 | if ((!sample->user_regs.regs) || | |
2181 | (!sample->user_stack.size)) | |
2182 | return 0; | |
2183 | ||
91d7b2de | 2184 | return unwind__get_entries(unwind_entry, cursor, |
352ea45a | 2185 | thread, sample, max_stack); |
9919a65e | 2186 | } |
3f067dca | 2187 | |
9919a65e CP |
2188 | int thread__resolve_callchain(struct thread *thread, |
2189 | struct callchain_cursor *cursor, | |
2190 | struct perf_evsel *evsel, | |
2191 | struct perf_sample *sample, | |
2192 | struct symbol **parent, | |
2193 | struct addr_location *root_al, | |
2194 | int max_stack) | |
2195 | { | |
2196 | int ret = 0; | |
2197 | ||
914eb9ca | 2198 | callchain_cursor_reset(cursor); |
9919a65e CP |
2199 | |
2200 | if (callchain_param.order == ORDER_CALLEE) { | |
2201 | ret = thread__resolve_callchain_sample(thread, cursor, | |
2202 | evsel, sample, | |
2203 | parent, root_al, | |
2204 | max_stack); | |
2205 | if (ret) | |
2206 | return ret; | |
2207 | ret = thread__resolve_callchain_unwind(thread, cursor, | |
2208 | evsel, sample, | |
2209 | max_stack); | |
2210 | } else { | |
2211 | ret = thread__resolve_callchain_unwind(thread, cursor, | |
2212 | evsel, sample, | |
2213 | max_stack); | |
2214 | if (ret) | |
2215 | return ret; | |
2216 | ret = thread__resolve_callchain_sample(thread, cursor, | |
2217 | evsel, sample, | |
2218 | parent, root_al, | |
2219 | max_stack); | |
2220 | } | |
2221 | ||
2222 | return ret; | |
3f067dca | 2223 | } |
35feee19 DA |
2224 | |
2225 | int machine__for_each_thread(struct machine *machine, | |
2226 | int (*fn)(struct thread *thread, void *p), | |
2227 | void *priv) | |
2228 | { | |
91e467bc | 2229 | struct threads *threads; |
35feee19 DA |
2230 | struct rb_node *nd; |
2231 | struct thread *thread; | |
2232 | int rc = 0; | |
91e467bc | 2233 | int i; |
35feee19 | 2234 | |
91e467bc KL |
2235 | for (i = 0; i < THREADS__TABLE_SIZE; i++) { |
2236 | threads = &machine->threads[i]; | |
2237 | for (nd = rb_first(&threads->entries); nd; nd = rb_next(nd)) { | |
2238 | thread = rb_entry(nd, struct thread, rb_node); | |
2239 | rc = fn(thread, priv); | |
2240 | if (rc != 0) | |
2241 | return rc; | |
2242 | } | |
35feee19 | 2243 | |
91e467bc KL |
2244 | list_for_each_entry(thread, &threads->dead, node) { |
2245 | rc = fn(thread, priv); | |
2246 | if (rc != 0) | |
2247 | return rc; | |
2248 | } | |
35feee19 DA |
2249 | } |
2250 | return rc; | |
2251 | } | |
58d925dc | 2252 | |
a5499b37 AH |
2253 | int machines__for_each_thread(struct machines *machines, |
2254 | int (*fn)(struct thread *thread, void *p), | |
2255 | void *priv) | |
2256 | { | |
2257 | struct rb_node *nd; | |
2258 | int rc = 0; | |
2259 | ||
2260 | rc = machine__for_each_thread(&machines->host, fn, priv); | |
2261 | if (rc != 0) | |
2262 | return rc; | |
2263 | ||
2264 | for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) { | |
2265 | struct machine *machine = rb_entry(nd, struct machine, rb_node); | |
2266 | ||
2267 | rc = machine__for_each_thread(machine, fn, priv); | |
2268 | if (rc != 0) | |
2269 | return rc; | |
2270 | } | |
2271 | return rc; | |
2272 | } | |
2273 | ||
a33fbd56 | 2274 | int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool, |
602ad878 | 2275 | struct target *target, struct thread_map *threads, |
9d9cad76 | 2276 | perf_event__handler_t process, bool data_mmap, |
340b47f5 KL |
2277 | unsigned int proc_map_timeout, |
2278 | unsigned int nr_threads_synthesize) | |
58d925dc | 2279 | { |
602ad878 | 2280 | if (target__has_task(target)) |
9d9cad76 | 2281 | return perf_event__synthesize_thread_map(tool, threads, process, machine, data_mmap, proc_map_timeout); |
602ad878 | 2282 | else if (target__has_cpu(target)) |
340b47f5 KL |
2283 | return perf_event__synthesize_threads(tool, process, |
2284 | machine, data_mmap, | |
2285 | proc_map_timeout, | |
2286 | nr_threads_synthesize); | |
58d925dc ACM |
2287 | /* command specified */ |
2288 | return 0; | |
2289 | } | |
b9d266ba AH |
2290 | |
2291 | pid_t machine__get_current_tid(struct machine *machine, int cpu) | |
2292 | { | |
2293 | if (cpu < 0 || cpu >= MAX_NR_CPUS || !machine->current_tid) | |
2294 | return -1; | |
2295 | ||
2296 | return machine->current_tid[cpu]; | |
2297 | } | |
2298 | ||
2299 | int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid, | |
2300 | pid_t tid) | |
2301 | { | |
2302 | struct thread *thread; | |
2303 | ||
2304 | if (cpu < 0) | |
2305 | return -EINVAL; | |
2306 | ||
2307 | if (!machine->current_tid) { | |
2308 | int i; | |
2309 | ||
2310 | machine->current_tid = calloc(MAX_NR_CPUS, sizeof(pid_t)); | |
2311 | if (!machine->current_tid) | |
2312 | return -ENOMEM; | |
2313 | for (i = 0; i < MAX_NR_CPUS; i++) | |
2314 | machine->current_tid[i] = -1; | |
2315 | } | |
2316 | ||
2317 | if (cpu >= MAX_NR_CPUS) { | |
2318 | pr_err("Requested CPU %d too large. ", cpu); | |
2319 | pr_err("Consider raising MAX_NR_CPUS\n"); | |
2320 | return -EINVAL; | |
2321 | } | |
2322 | ||
2323 | machine->current_tid[cpu] = tid; | |
2324 | ||
2325 | thread = machine__findnew_thread(machine, pid, tid); | |
2326 | if (!thread) | |
2327 | return -ENOMEM; | |
2328 | ||
2329 | thread->cpu = cpu; | |
b91fc39f | 2330 | thread__put(thread); |
b9d266ba AH |
2331 | |
2332 | return 0; | |
2333 | } | |
fbe2af45 AH |
2334 | |
2335 | int machine__get_kernel_start(struct machine *machine) | |
2336 | { | |
a5e813c6 | 2337 | struct map *map = machine__kernel_map(machine); |
fbe2af45 AH |
2338 | int err = 0; |
2339 | ||
2340 | /* | |
2341 | * The only addresses above 2^63 are kernel addresses of a 64-bit | |
2342 | * kernel. Note that addresses are unsigned so that on a 32-bit system | |
2343 | * all addresses including kernel addresses are less than 2^32. In | |
2344 | * that case (32-bit system), if the kernel mapping is unknown, all | |
2345 | * addresses will be assumed to be in user space - see | |
2346 | * machine__kernel_ip(). | |
2347 | */ | |
2348 | machine->kernel_start = 1ULL << 63; | |
2349 | if (map) { | |
be39db9f | 2350 | err = map__load(map); |
4b1303d0 | 2351 | if (!err) |
fbe2af45 AH |
2352 | machine->kernel_start = map->start; |
2353 | } | |
2354 | return err; | |
2355 | } | |
aa7cc2ae ACM |
2356 | |
2357 | struct dso *machine__findnew_dso(struct machine *machine, const char *filename) | |
2358 | { | |
e8807844 | 2359 | return dsos__findnew(&machine->dsos, filename); |
aa7cc2ae | 2360 | } |
c3168b0d ACM |
2361 | |
2362 | char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp) | |
2363 | { | |
2364 | struct machine *machine = vmachine; | |
2365 | struct map *map; | |
128cde33 | 2366 | struct symbol *sym = machine__find_kernel_function(machine, *addrp, &map); |
c3168b0d ACM |
2367 | |
2368 | if (sym == NULL) | |
2369 | return NULL; | |
2370 | ||
2371 | *modp = __map__is_kmodule(map) ? (char *)map->dso->short_name : NULL; | |
2372 | *addrp = map->unmap_ip(map, sym->start); | |
2373 | return sym->name; | |
2374 | } |