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