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