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[mirror_ubuntu-artful-kernel.git] / tools / perf / util / event.c
1 #include <linux/types.h>
2 #include "event.h"
3 #include "debug.h"
4 #include "machine.h"
5 #include "sort.h"
6 #include "string.h"
7 #include "strlist.h"
8 #include "thread.h"
9 #include "thread_map.h"
10 #include "symbol/kallsyms.h"
11
12 static const char *perf_event__names[] = {
13 [0] = "TOTAL",
14 [PERF_RECORD_MMAP] = "MMAP",
15 [PERF_RECORD_MMAP2] = "MMAP2",
16 [PERF_RECORD_LOST] = "LOST",
17 [PERF_RECORD_COMM] = "COMM",
18 [PERF_RECORD_EXIT] = "EXIT",
19 [PERF_RECORD_THROTTLE] = "THROTTLE",
20 [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE",
21 [PERF_RECORD_FORK] = "FORK",
22 [PERF_RECORD_READ] = "READ",
23 [PERF_RECORD_SAMPLE] = "SAMPLE",
24 [PERF_RECORD_HEADER_ATTR] = "ATTR",
25 [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE",
26 [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA",
27 [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID",
28 [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND",
29 };
30
31 const char *perf_event__name(unsigned int id)
32 {
33 if (id >= ARRAY_SIZE(perf_event__names))
34 return "INVALID";
35 if (!perf_event__names[id])
36 return "UNKNOWN";
37 return perf_event__names[id];
38 }
39
40 static struct perf_sample synth_sample = {
41 .pid = -1,
42 .tid = -1,
43 .time = -1,
44 .stream_id = -1,
45 .cpu = -1,
46 .period = 1,
47 };
48
49 static pid_t perf_event__get_comm_tgid(pid_t pid, char *comm, size_t len)
50 {
51 char filename[PATH_MAX];
52 char bf[BUFSIZ];
53 FILE *fp;
54 size_t size = 0;
55 pid_t tgid = -1;
56
57 snprintf(filename, sizeof(filename), "/proc/%d/status", pid);
58
59 fp = fopen(filename, "r");
60 if (fp == NULL) {
61 pr_debug("couldn't open %s\n", filename);
62 return 0;
63 }
64
65 while (!comm[0] || (tgid < 0)) {
66 if (fgets(bf, sizeof(bf), fp) == NULL) {
67 pr_warning("couldn't get COMM and pgid, malformed %s\n",
68 filename);
69 break;
70 }
71
72 if (memcmp(bf, "Name:", 5) == 0) {
73 char *name = bf + 5;
74 while (*name && isspace(*name))
75 ++name;
76 size = strlen(name) - 1;
77 if (size >= len)
78 size = len - 1;
79 memcpy(comm, name, size);
80 comm[size] = '\0';
81
82 } else if (memcmp(bf, "Tgid:", 5) == 0) {
83 char *tgids = bf + 5;
84 while (*tgids && isspace(*tgids))
85 ++tgids;
86 tgid = atoi(tgids);
87 }
88 }
89
90 fclose(fp);
91
92 return tgid;
93 }
94
95 static pid_t perf_event__synthesize_comm(struct perf_tool *tool,
96 union perf_event *event, pid_t pid,
97 int full,
98 perf_event__handler_t process,
99 struct machine *machine)
100 {
101 char filename[PATH_MAX];
102 size_t size;
103 DIR *tasks;
104 struct dirent dirent, *next;
105 pid_t tgid;
106
107 memset(&event->comm, 0, sizeof(event->comm));
108
109 if (machine__is_host(machine))
110 tgid = perf_event__get_comm_tgid(pid, event->comm.comm,
111 sizeof(event->comm.comm));
112 else
113 tgid = machine->pid;
114
115 if (tgid < 0)
116 goto out;
117
118 event->comm.pid = tgid;
119 event->comm.header.type = PERF_RECORD_COMM;
120
121 size = strlen(event->comm.comm) + 1;
122 size = PERF_ALIGN(size, sizeof(u64));
123 memset(event->comm.comm + size, 0, machine->id_hdr_size);
124 event->comm.header.size = (sizeof(event->comm) -
125 (sizeof(event->comm.comm) - size) +
126 machine->id_hdr_size);
127 if (!full) {
128 event->comm.tid = pid;
129
130 if (process(tool, event, &synth_sample, machine) != 0)
131 return -1;
132
133 goto out;
134 }
135
136 snprintf(filename, sizeof(filename), "%s/proc/%d/task",
137 machine->root_dir, pid);
138
139 tasks = opendir(filename);
140 if (tasks == NULL) {
141 pr_debug("couldn't open %s\n", filename);
142 return 0;
143 }
144
145 while (!readdir_r(tasks, &dirent, &next) && next) {
146 char *end;
147 pid = strtol(dirent.d_name, &end, 10);
148 if (*end)
149 continue;
150
151 /* already have tgid; jut want to update the comm */
152 (void) perf_event__get_comm_tgid(pid, event->comm.comm,
153 sizeof(event->comm.comm));
154
155 size = strlen(event->comm.comm) + 1;
156 size = PERF_ALIGN(size, sizeof(u64));
157 memset(event->comm.comm + size, 0, machine->id_hdr_size);
158 event->comm.header.size = (sizeof(event->comm) -
159 (sizeof(event->comm.comm) - size) +
160 machine->id_hdr_size);
161
162 event->comm.tid = pid;
163
164 if (process(tool, event, &synth_sample, machine) != 0) {
165 tgid = -1;
166 break;
167 }
168 }
169
170 closedir(tasks);
171 out:
172 return tgid;
173 }
174
175 static int perf_event__synthesize_mmap_events(struct perf_tool *tool,
176 union perf_event *event,
177 pid_t pid, pid_t tgid,
178 perf_event__handler_t process,
179 struct machine *machine,
180 bool mmap_data)
181 {
182 char filename[PATH_MAX];
183 FILE *fp;
184 int rc = 0;
185
186 snprintf(filename, sizeof(filename), "%s/proc/%d/maps",
187 machine->root_dir, pid);
188
189 fp = fopen(filename, "r");
190 if (fp == NULL) {
191 /*
192 * We raced with a task exiting - just return:
193 */
194 pr_debug("couldn't open %s\n", filename);
195 return -1;
196 }
197
198 event->header.type = PERF_RECORD_MMAP;
199
200 while (1) {
201 char bf[BUFSIZ];
202 char prot[5];
203 char execname[PATH_MAX];
204 char anonstr[] = "//anon";
205 size_t size;
206 ssize_t n;
207
208 if (fgets(bf, sizeof(bf), fp) == NULL)
209 break;
210
211 /* ensure null termination since stack will be reused. */
212 strcpy(execname, "");
213
214 /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */
215 n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %*x:%*x %*u %s\n",
216 &event->mmap.start, &event->mmap.len, prot,
217 &event->mmap.pgoff,
218 execname);
219 /*
220 * Anon maps don't have the execname.
221 */
222 if (n < 4)
223 continue;
224 /*
225 * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c
226 */
227 if (machine__is_host(machine))
228 event->header.misc = PERF_RECORD_MISC_USER;
229 else
230 event->header.misc = PERF_RECORD_MISC_GUEST_USER;
231
232 if (prot[2] != 'x') {
233 if (!mmap_data || prot[0] != 'r')
234 continue;
235
236 event->header.misc |= PERF_RECORD_MISC_MMAP_DATA;
237 }
238
239 if (!strcmp(execname, ""))
240 strcpy(execname, anonstr);
241
242 size = strlen(execname) + 1;
243 memcpy(event->mmap.filename, execname, size);
244 size = PERF_ALIGN(size, sizeof(u64));
245 event->mmap.len -= event->mmap.start;
246 event->mmap.header.size = (sizeof(event->mmap) -
247 (sizeof(event->mmap.filename) - size));
248 memset(event->mmap.filename + size, 0, machine->id_hdr_size);
249 event->mmap.header.size += machine->id_hdr_size;
250 event->mmap.pid = tgid;
251 event->mmap.tid = pid;
252
253 if (process(tool, event, &synth_sample, machine) != 0) {
254 rc = -1;
255 break;
256 }
257 }
258
259 fclose(fp);
260 return rc;
261 }
262
263 int perf_event__synthesize_modules(struct perf_tool *tool,
264 perf_event__handler_t process,
265 struct machine *machine)
266 {
267 int rc = 0;
268 struct rb_node *nd;
269 struct map_groups *kmaps = &machine->kmaps;
270 union perf_event *event = zalloc((sizeof(event->mmap) +
271 machine->id_hdr_size));
272 if (event == NULL) {
273 pr_debug("Not enough memory synthesizing mmap event "
274 "for kernel modules\n");
275 return -1;
276 }
277
278 event->header.type = PERF_RECORD_MMAP;
279
280 /*
281 * kernel uses 0 for user space maps, see kernel/perf_event.c
282 * __perf_event_mmap
283 */
284 if (machine__is_host(machine))
285 event->header.misc = PERF_RECORD_MISC_KERNEL;
286 else
287 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
288
289 for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]);
290 nd; nd = rb_next(nd)) {
291 size_t size;
292 struct map *pos = rb_entry(nd, struct map, rb_node);
293
294 if (pos->dso->kernel)
295 continue;
296
297 size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
298 event->mmap.header.type = PERF_RECORD_MMAP;
299 event->mmap.header.size = (sizeof(event->mmap) -
300 (sizeof(event->mmap.filename) - size));
301 memset(event->mmap.filename + size, 0, machine->id_hdr_size);
302 event->mmap.header.size += machine->id_hdr_size;
303 event->mmap.start = pos->start;
304 event->mmap.len = pos->end - pos->start;
305 event->mmap.pid = machine->pid;
306
307 memcpy(event->mmap.filename, pos->dso->long_name,
308 pos->dso->long_name_len + 1);
309 if (process(tool, event, &synth_sample, machine) != 0) {
310 rc = -1;
311 break;
312 }
313 }
314
315 free(event);
316 return rc;
317 }
318
319 static int __event__synthesize_thread(union perf_event *comm_event,
320 union perf_event *mmap_event,
321 pid_t pid, int full,
322 perf_event__handler_t process,
323 struct perf_tool *tool,
324 struct machine *machine, bool mmap_data)
325 {
326 pid_t tgid = perf_event__synthesize_comm(tool, comm_event, pid, full,
327 process, machine);
328 if (tgid == -1)
329 return -1;
330 return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
331 process, machine, mmap_data);
332 }
333
334 int perf_event__synthesize_thread_map(struct perf_tool *tool,
335 struct thread_map *threads,
336 perf_event__handler_t process,
337 struct machine *machine,
338 bool mmap_data)
339 {
340 union perf_event *comm_event, *mmap_event;
341 int err = -1, thread, j;
342
343 comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
344 if (comm_event == NULL)
345 goto out;
346
347 mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size);
348 if (mmap_event == NULL)
349 goto out_free_comm;
350
351 err = 0;
352 for (thread = 0; thread < threads->nr; ++thread) {
353 if (__event__synthesize_thread(comm_event, mmap_event,
354 threads->map[thread], 0,
355 process, tool, machine,
356 mmap_data)) {
357 err = -1;
358 break;
359 }
360
361 /*
362 * comm.pid is set to thread group id by
363 * perf_event__synthesize_comm
364 */
365 if ((int) comm_event->comm.pid != threads->map[thread]) {
366 bool need_leader = true;
367
368 /* is thread group leader in thread_map? */
369 for (j = 0; j < threads->nr; ++j) {
370 if ((int) comm_event->comm.pid == threads->map[j]) {
371 need_leader = false;
372 break;
373 }
374 }
375
376 /* if not, generate events for it */
377 if (need_leader &&
378 __event__synthesize_thread(comm_event, mmap_event,
379 comm_event->comm.pid, 0,
380 process, tool, machine,
381 mmap_data)) {
382 err = -1;
383 break;
384 }
385 }
386 }
387 free(mmap_event);
388 out_free_comm:
389 free(comm_event);
390 out:
391 return err;
392 }
393
394 int perf_event__synthesize_threads(struct perf_tool *tool,
395 perf_event__handler_t process,
396 struct machine *machine, bool mmap_data)
397 {
398 DIR *proc;
399 char proc_path[PATH_MAX];
400 struct dirent dirent, *next;
401 union perf_event *comm_event, *mmap_event;
402 int err = -1;
403
404 comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
405 if (comm_event == NULL)
406 goto out;
407
408 mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size);
409 if (mmap_event == NULL)
410 goto out_free_comm;
411
412 snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir);
413 proc = opendir(proc_path);
414
415 if (proc == NULL)
416 goto out_free_mmap;
417
418 while (!readdir_r(proc, &dirent, &next) && next) {
419 char *end;
420 pid_t pid = strtol(dirent.d_name, &end, 10);
421
422 if (*end) /* only interested in proper numerical dirents */
423 continue;
424 /*
425 * We may race with exiting thread, so don't stop just because
426 * one thread couldn't be synthesized.
427 */
428 __event__synthesize_thread(comm_event, mmap_event, pid, 1,
429 process, tool, machine, mmap_data);
430 }
431
432 err = 0;
433 closedir(proc);
434 out_free_mmap:
435 free(mmap_event);
436 out_free_comm:
437 free(comm_event);
438 out:
439 return err;
440 }
441
442 struct process_symbol_args {
443 const char *name;
444 u64 start;
445 };
446
447 static int find_symbol_cb(void *arg, const char *name, char type,
448 u64 start)
449 {
450 struct process_symbol_args *args = arg;
451
452 /*
453 * Must be a function or at least an alias, as in PARISC64, where "_text" is
454 * an 'A' to the same address as "_stext".
455 */
456 if (!(symbol_type__is_a(type, MAP__FUNCTION) ||
457 type == 'A') || strcmp(name, args->name))
458 return 0;
459
460 args->start = start;
461 return 1;
462 }
463
464 int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
465 perf_event__handler_t process,
466 struct machine *machine,
467 const char *symbol_name)
468 {
469 size_t size;
470 const char *filename, *mmap_name;
471 char path[PATH_MAX];
472 char name_buff[PATH_MAX];
473 struct map *map;
474 int err;
475 /*
476 * We should get this from /sys/kernel/sections/.text, but till that is
477 * available use this, and after it is use this as a fallback for older
478 * kernels.
479 */
480 struct process_symbol_args args = { .name = symbol_name, };
481 union perf_event *event = zalloc((sizeof(event->mmap) +
482 machine->id_hdr_size));
483 if (event == NULL) {
484 pr_debug("Not enough memory synthesizing mmap event "
485 "for kernel modules\n");
486 return -1;
487 }
488
489 mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff));
490 if (machine__is_host(machine)) {
491 /*
492 * kernel uses PERF_RECORD_MISC_USER for user space maps,
493 * see kernel/perf_event.c __perf_event_mmap
494 */
495 event->header.misc = PERF_RECORD_MISC_KERNEL;
496 filename = "/proc/kallsyms";
497 } else {
498 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
499 if (machine__is_default_guest(machine))
500 filename = (char *) symbol_conf.default_guest_kallsyms;
501 else {
502 sprintf(path, "%s/proc/kallsyms", machine->root_dir);
503 filename = path;
504 }
505 }
506
507 if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0) {
508 free(event);
509 return -ENOENT;
510 }
511
512 map = machine->vmlinux_maps[MAP__FUNCTION];
513 size = snprintf(event->mmap.filename, sizeof(event->mmap.filename),
514 "%s%s", mmap_name, symbol_name) + 1;
515 size = PERF_ALIGN(size, sizeof(u64));
516 event->mmap.header.type = PERF_RECORD_MMAP;
517 event->mmap.header.size = (sizeof(event->mmap) -
518 (sizeof(event->mmap.filename) - size) + machine->id_hdr_size);
519 event->mmap.pgoff = args.start;
520 event->mmap.start = map->start;
521 event->mmap.len = map->end - event->mmap.start;
522 event->mmap.pid = machine->pid;
523
524 err = process(tool, event, &synth_sample, machine);
525 free(event);
526
527 return err;
528 }
529
530 size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
531 {
532 return fprintf(fp, ": %s:%d\n", event->comm.comm, event->comm.tid);
533 }
534
535 int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
536 union perf_event *event,
537 struct perf_sample *sample,
538 struct machine *machine)
539 {
540 return machine__process_comm_event(machine, event, sample);
541 }
542
543 int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
544 union perf_event *event,
545 struct perf_sample *sample,
546 struct machine *machine)
547 {
548 return machine__process_lost_event(machine, event, sample);
549 }
550
551 size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
552 {
553 return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %c %s\n",
554 event->mmap.pid, event->mmap.tid, event->mmap.start,
555 event->mmap.len, event->mmap.pgoff,
556 (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
557 event->mmap.filename);
558 }
559
560 size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
561 {
562 return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64
563 " %02x:%02x %"PRIu64" %"PRIu64"]: %c %s\n",
564 event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
565 event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj,
566 event->mmap2.min, event->mmap2.ino,
567 event->mmap2.ino_generation,
568 (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
569 event->mmap2.filename);
570 }
571
572 int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
573 union perf_event *event,
574 struct perf_sample *sample,
575 struct machine *machine)
576 {
577 return machine__process_mmap_event(machine, event, sample);
578 }
579
580 int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused,
581 union perf_event *event,
582 struct perf_sample *sample,
583 struct machine *machine)
584 {
585 return machine__process_mmap2_event(machine, event, sample);
586 }
587
588 size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
589 {
590 return fprintf(fp, "(%d:%d):(%d:%d)\n",
591 event->fork.pid, event->fork.tid,
592 event->fork.ppid, event->fork.ptid);
593 }
594
595 int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
596 union perf_event *event,
597 struct perf_sample *sample,
598 struct machine *machine)
599 {
600 return machine__process_fork_event(machine, event, sample);
601 }
602
603 int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
604 union perf_event *event,
605 struct perf_sample *sample,
606 struct machine *machine)
607 {
608 return machine__process_exit_event(machine, event, sample);
609 }
610
611 size_t perf_event__fprintf(union perf_event *event, FILE *fp)
612 {
613 size_t ret = fprintf(fp, "PERF_RECORD_%s",
614 perf_event__name(event->header.type));
615
616 switch (event->header.type) {
617 case PERF_RECORD_COMM:
618 ret += perf_event__fprintf_comm(event, fp);
619 break;
620 case PERF_RECORD_FORK:
621 case PERF_RECORD_EXIT:
622 ret += perf_event__fprintf_task(event, fp);
623 break;
624 case PERF_RECORD_MMAP:
625 ret += perf_event__fprintf_mmap(event, fp);
626 break;
627 case PERF_RECORD_MMAP2:
628 ret += perf_event__fprintf_mmap2(event, fp);
629 break;
630 default:
631 ret += fprintf(fp, "\n");
632 }
633
634 return ret;
635 }
636
637 int perf_event__process(struct perf_tool *tool __maybe_unused,
638 union perf_event *event,
639 struct perf_sample *sample,
640 struct machine *machine)
641 {
642 return machine__process_event(machine, event, sample);
643 }
644
645 void thread__find_addr_map(struct thread *thread,
646 struct machine *machine, u8 cpumode,
647 enum map_type type, u64 addr,
648 struct addr_location *al)
649 {
650 struct map_groups *mg = &thread->mg;
651 bool load_map = false;
652
653 al->machine = machine;
654 al->thread = thread;
655 al->addr = addr;
656 al->cpumode = cpumode;
657 al->filtered = false;
658
659 if (machine == NULL) {
660 al->map = NULL;
661 return;
662 }
663
664 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
665 al->level = 'k';
666 mg = &machine->kmaps;
667 load_map = true;
668 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
669 al->level = '.';
670 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
671 al->level = 'g';
672 mg = &machine->kmaps;
673 load_map = true;
674 } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) {
675 al->level = 'u';
676 } else {
677 al->level = 'H';
678 al->map = NULL;
679
680 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
681 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
682 !perf_guest)
683 al->filtered = true;
684 if ((cpumode == PERF_RECORD_MISC_USER ||
685 cpumode == PERF_RECORD_MISC_KERNEL) &&
686 !perf_host)
687 al->filtered = true;
688
689 return;
690 }
691 try_again:
692 al->map = map_groups__find(mg, type, al->addr);
693 if (al->map == NULL) {
694 /*
695 * If this is outside of all known maps, and is a negative
696 * address, try to look it up in the kernel dso, as it might be
697 * a vsyscall or vdso (which executes in user-mode).
698 *
699 * XXX This is nasty, we should have a symbol list in the
700 * "[vdso]" dso, but for now lets use the old trick of looking
701 * in the whole kernel symbol list.
702 */
703 if ((long long)al->addr < 0 &&
704 cpumode == PERF_RECORD_MISC_USER &&
705 machine && mg != &machine->kmaps) {
706 mg = &machine->kmaps;
707 goto try_again;
708 }
709 } else {
710 /*
711 * Kernel maps might be changed when loading symbols so loading
712 * must be done prior to using kernel maps.
713 */
714 if (load_map)
715 map__load(al->map, machine->symbol_filter);
716 al->addr = al->map->map_ip(al->map, al->addr);
717 }
718 }
719
720 void thread__find_addr_location(struct thread *thread, struct machine *machine,
721 u8 cpumode, enum map_type type, u64 addr,
722 struct addr_location *al)
723 {
724 thread__find_addr_map(thread, machine, cpumode, type, addr, al);
725 if (al->map != NULL)
726 al->sym = map__find_symbol(al->map, al->addr,
727 machine->symbol_filter);
728 else
729 al->sym = NULL;
730 }
731
732 int perf_event__preprocess_sample(const union perf_event *event,
733 struct machine *machine,
734 struct addr_location *al,
735 struct perf_sample *sample)
736 {
737 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
738 struct thread *thread = machine__findnew_thread(machine, sample->pid,
739 sample->pid);
740
741 if (thread == NULL)
742 return -1;
743
744 if (thread__is_filtered(thread))
745 goto out_filtered;
746
747 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
748 /*
749 * Have we already created the kernel maps for this machine?
750 *
751 * This should have happened earlier, when we processed the kernel MMAP
752 * events, but for older perf.data files there was no such thing, so do
753 * it now.
754 */
755 if (cpumode == PERF_RECORD_MISC_KERNEL &&
756 machine->vmlinux_maps[MAP__FUNCTION] == NULL)
757 machine__create_kernel_maps(machine);
758
759 thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
760 sample->ip, al);
761 dump_printf(" ...... dso: %s\n",
762 al->map ? al->map->dso->long_name :
763 al->level == 'H' ? "[hypervisor]" : "<not found>");
764 al->sym = NULL;
765 al->cpu = sample->cpu;
766
767 if (al->map) {
768 struct dso *dso = al->map->dso;
769
770 if (symbol_conf.dso_list &&
771 (!dso || !(strlist__has_entry(symbol_conf.dso_list,
772 dso->short_name) ||
773 (dso->short_name != dso->long_name &&
774 strlist__has_entry(symbol_conf.dso_list,
775 dso->long_name)))))
776 goto out_filtered;
777
778 al->sym = map__find_symbol(al->map, al->addr,
779 machine->symbol_filter);
780 }
781
782 if (symbol_conf.sym_list &&
783 (!al->sym || !strlist__has_entry(symbol_conf.sym_list,
784 al->sym->name)))
785 goto out_filtered;
786
787 return 0;
788
789 out_filtered:
790 al->filtered = true;
791 return 0;
792 }
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