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Merge branch 'for-linus' of git://github.com/dtor/input
[linux-btrfs-devel.git] / tools / perf / util / event.c
blob437f8ca679a07110872e752b475df0ff9a38ea4c
1 #include <linux/types.h>
2 #include "event.h"
3 #include "debug.h"
4 #include "session.h"
5 #include "sort.h"
6 #include "string.h"
7 #include "strlist.h"
8 #include "thread.h"
9 #include "thread_map.h"
10
11 static const char *perf_event__names[] = {
12 [0] = "TOTAL",
13 [PERF_RECORD_MMAP] = "MMAP",
14 [PERF_RECORD_LOST] = "LOST",
15 [PERF_RECORD_COMM] = "COMM",
16 [PERF_RECORD_EXIT] = "EXIT",
17 [PERF_RECORD_THROTTLE] = "THROTTLE",
18 [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE",
19 [PERF_RECORD_FORK] = "FORK",
20 [PERF_RECORD_READ] = "READ",
21 [PERF_RECORD_SAMPLE] = "SAMPLE",
22 [PERF_RECORD_HEADER_ATTR] = "ATTR",
23 [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE",
24 [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA",
25 [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID",
26 [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND",
27 };
28
29 const char *perf_event__name(unsigned int id)
30 {
31 if (id >= ARRAY_SIZE(perf_event__names))
32 return "INVALID";
33 if (!perf_event__names[id])
34 return "UNKNOWN";
35 return perf_event__names[id];
36 }
37
38 static struct perf_sample synth_sample = {
39 .pid = -1,
40 .tid = -1,
41 .time = -1,
42 .stream_id = -1,
43 .cpu = -1,
44 .period = 1,
45 };
46
47 static pid_t perf_event__synthesize_comm(union perf_event *event, pid_t pid,
48 int full, perf_event__handler_t process,
49 struct perf_session *session)
50 {
51 char filename[PATH_MAX];
52 char bf[BUFSIZ];
53 FILE *fp;
54 size_t size = 0;
55 DIR *tasks;
56 struct dirent dirent, *next;
57 pid_t tgid = 0;
58
59 snprintf(filename, sizeof(filename), "/proc/%d/status", pid);
60
61 fp = fopen(filename, "r");
62 if (fp == NULL) {
63 out_race:
64 /*
65 * We raced with a task exiting - just return:
66 */
67 pr_debug("couldn't open %s\n", filename);
68 return 0;
69 }
70
71 memset(&event->comm, 0, sizeof(event->comm));
72
73 while (!event->comm.comm[0] || !event->comm.pid) {
74 if (fgets(bf, sizeof(bf), fp) == NULL) {
75 pr_warning("couldn't get COMM and pgid, malformed %s\n", filename);
76 goto out;
77 }
78
79 if (memcmp(bf, "Name:", 5) == 0) {
80 char *name = bf + 5;
81 while (*name && isspace(*name))
82 ++name;
83 size = strlen(name) - 1;
84 memcpy(event->comm.comm, name, size++);
85 } else if (memcmp(bf, "Tgid:", 5) == 0) {
86 char *tgids = bf + 5;
87 while (*tgids && isspace(*tgids))
88 ++tgids;
89 tgid = event->comm.pid = atoi(tgids);
90 }
91 }
92
93 event->comm.header.type = PERF_RECORD_COMM;
94 size = ALIGN(size, sizeof(u64));
95 memset(event->comm.comm + size, 0, session->id_hdr_size);
96 event->comm.header.size = (sizeof(event->comm) -
97 (sizeof(event->comm.comm) - size) +
98 session->id_hdr_size);
99 if (!full) {
100 event->comm.tid = pid;
101
102 process(event, &synth_sample, session);
103 goto out;
104 }
105
106 snprintf(filename, sizeof(filename), "/proc/%d/task", pid);
107
108 tasks = opendir(filename);
109 if (tasks == NULL)
110 goto out_race;
111
112 while (!readdir_r(tasks, &dirent, &next) && next) {
113 char *end;
114 pid = strtol(dirent.d_name, &end, 10);
115 if (*end)
116 continue;
117
118 event->comm.tid = pid;
119
120 process(event, &synth_sample, session);
121 }
122
123 closedir(tasks);
124 out:
125 fclose(fp);
126
127 return tgid;
128 }
129
130 static int perf_event__synthesize_mmap_events(union perf_event *event,
131 pid_t pid, pid_t tgid,
132 perf_event__handler_t process,
133 struct perf_session *session)
134 {
135 char filename[PATH_MAX];
136 FILE *fp;
137
138 snprintf(filename, sizeof(filename), "/proc/%d/maps", pid);
139
140 fp = fopen(filename, "r");
141 if (fp == NULL) {
142 /*
143 * We raced with a task exiting - just return:
144 */
145 pr_debug("couldn't open %s\n", filename);
146 return -1;
147 }
148
149 event->header.type = PERF_RECORD_MMAP;
150 /*
151 * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c
152 */
153 event->header.misc = PERF_RECORD_MISC_USER;
154
155 while (1) {
156 char bf[BUFSIZ], *pbf = bf;
157 int n;
158 size_t size;
159 if (fgets(bf, sizeof(bf), fp) == NULL)
160 break;
161
162 /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */
163 n = hex2u64(pbf, &event->mmap.start);
164 if (n < 0)
165 continue;
166 pbf += n + 1;
167 n = hex2u64(pbf, &event->mmap.len);
168 if (n < 0)
169 continue;
170 pbf += n + 3;
171 if (*pbf == 'x') { /* vm_exec */
172 char anonstr[] = "//anon\n";
173 char *execname = strchr(bf, '/');
174
175 /* Catch VDSO */
176 if (execname == NULL)
177 execname = strstr(bf, "[vdso]");
178
179 /* Catch anonymous mmaps */
180 if ((execname == NULL) && !strstr(bf, "["))
181 execname = anonstr;
182
183 if (execname == NULL)
184 continue;
185
186 pbf += 3;
187 n = hex2u64(pbf, &event->mmap.pgoff);
188
189 size = strlen(execname);
190 execname[size - 1] = '\0'; /* Remove \n */
191 memcpy(event->mmap.filename, execname, size);
192 size = ALIGN(size, sizeof(u64));
193 event->mmap.len -= event->mmap.start;
194 event->mmap.header.size = (sizeof(event->mmap) -
195 (sizeof(event->mmap.filename) - size));
196 memset(event->mmap.filename + size, 0, session->id_hdr_size);
197 event->mmap.header.size += session->id_hdr_size;
198 event->mmap.pid = tgid;
199 event->mmap.tid = pid;
200
201 process(event, &synth_sample, session);
202 }
203 }
204
205 fclose(fp);
206 return 0;
207 }
208
209 int perf_event__synthesize_modules(perf_event__handler_t process,
210 struct perf_session *session,
211 struct machine *machine)
212 {
213 struct rb_node *nd;
214 struct map_groups *kmaps = &machine->kmaps;
215 union perf_event *event = zalloc((sizeof(event->mmap) +
216 session->id_hdr_size));
217 if (event == NULL) {
218 pr_debug("Not enough memory synthesizing mmap event "
219 "for kernel modules\n");
220 return -1;
221 }
222
223 event->header.type = PERF_RECORD_MMAP;
224
225 /*
226 * kernel uses 0 for user space maps, see kernel/perf_event.c
227 * __perf_event_mmap
228 */
229 if (machine__is_host(machine))
230 event->header.misc = PERF_RECORD_MISC_KERNEL;
231 else
232 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
233
234 for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]);
235 nd; nd = rb_next(nd)) {
236 size_t size;
237 struct map *pos = rb_entry(nd, struct map, rb_node);
238
239 if (pos->dso->kernel)
240 continue;
241
242 size = ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
243 event->mmap.header.type = PERF_RECORD_MMAP;
244 event->mmap.header.size = (sizeof(event->mmap) -
245 (sizeof(event->mmap.filename) - size));
246 memset(event->mmap.filename + size, 0, session->id_hdr_size);
247 event->mmap.header.size += session->id_hdr_size;
248 event->mmap.start = pos->start;
249 event->mmap.len = pos->end - pos->start;
250 event->mmap.pid = machine->pid;
251
252 memcpy(event->mmap.filename, pos->dso->long_name,
253 pos->dso->long_name_len + 1);
254 process(event, &synth_sample, session);
255 }
256
257 free(event);
258 return 0;
259 }
260
261 static int __event__synthesize_thread(union perf_event *comm_event,
262 union perf_event *mmap_event,
263 pid_t pid, perf_event__handler_t process,
264 struct perf_session *session)
265 {
266 pid_t tgid = perf_event__synthesize_comm(comm_event, pid, 1, process,
267 session);
268 if (tgid == -1)
269 return -1;
270 return perf_event__synthesize_mmap_events(mmap_event, pid, tgid,
271 process, session);
272 }
273
274 int perf_event__synthesize_thread_map(struct thread_map *threads,
275 perf_event__handler_t process,
276 struct perf_session *session)
277 {
278 union perf_event *comm_event, *mmap_event;
279 int err = -1, thread;
280
281 comm_event = malloc(sizeof(comm_event->comm) + session->id_hdr_size);
282 if (comm_event == NULL)
283 goto out;
284
285 mmap_event = malloc(sizeof(mmap_event->mmap) + session->id_hdr_size);
286 if (mmap_event == NULL)
287 goto out_free_comm;
288
289 err = 0;
290 for (thread = 0; thread < threads->nr; ++thread) {
291 if (__event__synthesize_thread(comm_event, mmap_event,
292 threads->map[thread],
293 process, session)) {
294 err = -1;
295 break;
296 }
297 }
298 free(mmap_event);
299 out_free_comm:
300 free(comm_event);
301 out:
302 return err;
303 }
304
305 int perf_event__synthesize_threads(perf_event__handler_t process,
306 struct perf_session *session)
307 {
308 DIR *proc;
309 struct dirent dirent, *next;
310 union perf_event *comm_event, *mmap_event;
311 int err = -1;
312
313 comm_event = malloc(sizeof(comm_event->comm) + session->id_hdr_size);
314 if (comm_event == NULL)
315 goto out;
316
317 mmap_event = malloc(sizeof(mmap_event->mmap) + session->id_hdr_size);
318 if (mmap_event == NULL)
319 goto out_free_comm;
320
321 proc = opendir("/proc");
322 if (proc == NULL)
323 goto out_free_mmap;
324
325 while (!readdir_r(proc, &dirent, &next) && next) {
326 char *end;
327 pid_t pid = strtol(dirent.d_name, &end, 10);
328
329 if (*end) /* only interested in proper numerical dirents */
330 continue;
331
332 __event__synthesize_thread(comm_event, mmap_event, pid,
333 process, session);
334 }
335
336 closedir(proc);
337 err = 0;
338 out_free_mmap:
339 free(mmap_event);
340 out_free_comm:
341 free(comm_event);
342 out:
343 return err;
344 }
345
346 struct process_symbol_args {
347 const char *name;
348 u64 start;
349 };
350
351 static int find_symbol_cb(void *arg, const char *name, char type,
352 u64 start, u64 end __used)
353 {
354 struct process_symbol_args *args = arg;
355
356 /*
357 * Must be a function or at least an alias, as in PARISC64, where "_text" is
358 * an 'A' to the same address as "_stext".
359 */
360 if (!(symbol_type__is_a(type, MAP__FUNCTION) ||
361 type == 'A') || strcmp(name, args->name))
362 return 0;
363
364 args->start = start;
365 return 1;
366 }
367
368 int perf_event__synthesize_kernel_mmap(perf_event__handler_t process,
369 struct perf_session *session,
370 struct machine *machine,
371 const char *symbol_name)
372 {
373 size_t size;
374 const char *filename, *mmap_name;
375 char path[PATH_MAX];
376 char name_buff[PATH_MAX];
377 struct map *map;
378 int err;
379 /*
380 * We should get this from /sys/kernel/sections/.text, but till that is
381 * available use this, and after it is use this as a fallback for older
382 * kernels.
383 */
384 struct process_symbol_args args = { .name = symbol_name, };
385 union perf_event *event = zalloc((sizeof(event->mmap) +
386 session->id_hdr_size));
387 if (event == NULL) {
388 pr_debug("Not enough memory synthesizing mmap event "
389 "for kernel modules\n");
390 return -1;
391 }
392
393 mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff));
394 if (machine__is_host(machine)) {
395 /*
396 * kernel uses PERF_RECORD_MISC_USER for user space maps,
397 * see kernel/perf_event.c __perf_event_mmap
398 */
399 event->header.misc = PERF_RECORD_MISC_KERNEL;
400 filename = "/proc/kallsyms";
401 } else {
402 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
403 if (machine__is_default_guest(machine))
404 filename = (char *) symbol_conf.default_guest_kallsyms;
405 else {
406 sprintf(path, "%s/proc/kallsyms", machine->root_dir);
407 filename = path;
408 }
409 }
410
411 if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0)
412 return -ENOENT;
413
414 map = machine->vmlinux_maps[MAP__FUNCTION];
415 size = snprintf(event->mmap.filename, sizeof(event->mmap.filename),
416 "%s%s", mmap_name, symbol_name) + 1;
417 size = ALIGN(size, sizeof(u64));
418 event->mmap.header.type = PERF_RECORD_MMAP;
419 event->mmap.header.size = (sizeof(event->mmap) -
420 (sizeof(event->mmap.filename) - size) + session->id_hdr_size);
421 event->mmap.pgoff = args.start;
422 event->mmap.start = map->start;
423 event->mmap.len = map->end - event->mmap.start;
424 event->mmap.pid = machine->pid;
425
426 err = process(event, &synth_sample, session);
427 free(event);
428
429 return err;
430 }
431
432 int perf_event__process_comm(union perf_event *event,
433 struct perf_sample *sample __used,
434 struct perf_session *session)
435 {
436 struct thread *thread = perf_session__findnew(session, event->comm.tid);
437
438 dump_printf(": %s:%d\n", event->comm.comm, event->comm.tid);
439
440 if (thread == NULL || thread__set_comm(thread, event->comm.comm)) {
441 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
442 return -1;
443 }
444
445 return 0;
446 }
447
448 int perf_event__process_lost(union perf_event *event,
449 struct perf_sample *sample __used,
450 struct perf_session *session)
451 {
452 dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n",
453 event->lost.id, event->lost.lost);
454 session->hists.stats.total_lost += event->lost.lost;
455 return 0;
456 }
457
458 static void perf_event__set_kernel_mmap_len(union perf_event *event,
459 struct map **maps)
460 {
461 maps[MAP__FUNCTION]->start = event->mmap.start;
462 maps[MAP__FUNCTION]->end = event->mmap.start + event->mmap.len;
463 /*
464 * Be a bit paranoid here, some perf.data file came with
465 * a zero sized synthesized MMAP event for the kernel.
466 */
467 if (maps[MAP__FUNCTION]->end == 0)
468 maps[MAP__FUNCTION]->end = ~0ULL;
469 }
470
471 static int perf_event__process_kernel_mmap(union perf_event *event,
472 struct perf_session *session)
473 {
474 struct map *map;
475 char kmmap_prefix[PATH_MAX];
476 struct machine *machine;
477 enum dso_kernel_type kernel_type;
478 bool is_kernel_mmap;
479
480 machine = perf_session__findnew_machine(session, event->mmap.pid);
481 if (!machine) {
482 pr_err("Can't find id %d's machine\n", event->mmap.pid);
483 goto out_problem;
484 }
485
486 machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix));
487 if (machine__is_host(machine))
488 kernel_type = DSO_TYPE_KERNEL;
489 else
490 kernel_type = DSO_TYPE_GUEST_KERNEL;
491
492 is_kernel_mmap = memcmp(event->mmap.filename,
493 kmmap_prefix,
494 strlen(kmmap_prefix)) == 0;
495 if (event->mmap.filename[0] == '/' ||
496 (!is_kernel_mmap && event->mmap.filename[0] == '[')) {
497
498 char short_module_name[1024];
499 char *name, *dot;
500
501 if (event->mmap.filename[0] == '/') {
502 name = strrchr(event->mmap.filename, '/');
503 if (name == NULL)
504 goto out_problem;
505
506 ++name; /* skip / */
507 dot = strrchr(name, '.');
508 if (dot == NULL)
509 goto out_problem;
510 snprintf(short_module_name, sizeof(short_module_name),
511 "[%.*s]", (int)(dot - name), name);
512 strxfrchar(short_module_name, '-', '_');
513 } else
514 strcpy(short_module_name, event->mmap.filename);
515
516 map = machine__new_module(machine, event->mmap.start,
517 event->mmap.filename);
518 if (map == NULL)
519 goto out_problem;
520
521 name = strdup(short_module_name);
522 if (name == NULL)
523 goto out_problem;
524
525 map->dso->short_name = name;
526 map->dso->sname_alloc = 1;
527 map->end = map->start + event->mmap.len;
528 } else if (is_kernel_mmap) {
529 const char *symbol_name = (event->mmap.filename +
530 strlen(kmmap_prefix));
531 /*
532 * Should be there already, from the build-id table in
533 * the header.
534 */
535 struct dso *kernel = __dsos__findnew(&machine->kernel_dsos,
536 kmmap_prefix);
537 if (kernel == NULL)
538 goto out_problem;
539
540 kernel->kernel = kernel_type;
541 if (__machine__create_kernel_maps(machine, kernel) < 0)
542 goto out_problem;
543
544 perf_event__set_kernel_mmap_len(event, machine->vmlinux_maps);
545
546 /*
547 * Avoid using a zero address (kptr_restrict) for the ref reloc
548 * symbol. Effectively having zero here means that at record
549 * time /proc/sys/kernel/kptr_restrict was non zero.
550 */
551 if (event->mmap.pgoff != 0) {
552 perf_session__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps,
553 symbol_name,
554 event->mmap.pgoff);
555 }
556
557 if (machine__is_default_guest(machine)) {
558 /*
559 * preload dso of guest kernel and modules
560 */
561 dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION],
562 NULL);
563 }
564 }
565 return 0;
566 out_problem:
567 return -1;
568 }
569
570 int perf_event__process_mmap(union perf_event *event,
571 struct perf_sample *sample __used,
572 struct perf_session *session)
573 {
574 struct machine *machine;
575 struct thread *thread;
576 struct map *map;
577 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
578 int ret = 0;
579
580 dump_printf(" %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %s\n",
581 event->mmap.pid, event->mmap.tid, event->mmap.start,
582 event->mmap.len, event->mmap.pgoff, event->mmap.filename);
583
584 if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
585 cpumode == PERF_RECORD_MISC_KERNEL) {
586 ret = perf_event__process_kernel_mmap(event, session);
587 if (ret < 0)
588 goto out_problem;
589 return 0;
590 }
591
592 machine = perf_session__find_host_machine(session);
593 if (machine == NULL)
594 goto out_problem;
595 thread = perf_session__findnew(session, event->mmap.pid);
596 if (thread == NULL)
597 goto out_problem;
598 map = map__new(&machine->user_dsos, event->mmap.start,
599 event->mmap.len, event->mmap.pgoff,
600 event->mmap.pid, event->mmap.filename,
601 MAP__FUNCTION);
602 if (map == NULL)
603 goto out_problem;
604
605 thread__insert_map(thread, map);
606 return 0;
607
608 out_problem:
609 dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n");
610 return 0;
611 }
612
613 int perf_event__process_task(union perf_event *event,
614 struct perf_sample *sample __used,
615 struct perf_session *session)
616 {
617 struct thread *thread = perf_session__findnew(session, event->fork.tid);
618 struct thread *parent = perf_session__findnew(session, event->fork.ptid);
619
620 dump_printf("(%d:%d):(%d:%d)\n", event->fork.pid, event->fork.tid,
621 event->fork.ppid, event->fork.ptid);
622
623 if (event->header.type == PERF_RECORD_EXIT) {
624 perf_session__remove_thread(session, thread);
625 return 0;
626 }
627
628 if (thread == NULL || parent == NULL ||
629 thread__fork(thread, parent) < 0) {
630 dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
631 return -1;
632 }
633
634 return 0;
635 }
636
637 int perf_event__process(union perf_event *event, struct perf_sample *sample,
638 struct perf_session *session)
639 {
640 switch (event->header.type) {
641 case PERF_RECORD_COMM:
642 perf_event__process_comm(event, sample, session);
643 break;
644 case PERF_RECORD_MMAP:
645 perf_event__process_mmap(event, sample, session);
646 break;
647 case PERF_RECORD_FORK:
648 case PERF_RECORD_EXIT:
649 perf_event__process_task(event, sample, session);
650 break;
651 case PERF_RECORD_LOST:
652 perf_event__process_lost(event, sample, session);
653 default:
654 break;
655 }
656
657 return 0;
658 }
659
660 void thread__find_addr_map(struct thread *self,
661 struct perf_session *session, u8 cpumode,
662 enum map_type type, pid_t pid, u64 addr,
663 struct addr_location *al)
664 {
665 struct map_groups *mg = &self->mg;
666 struct machine *machine = NULL;
667
668 al->thread = self;
669 al->addr = addr;
670 al->cpumode = cpumode;
671 al->filtered = false;
672
673 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
674 al->level = 'k';
675 machine = perf_session__find_host_machine(session);
676 if (machine == NULL) {
677 al->map = NULL;
678 return;
679 }
680 mg = &machine->kmaps;
681 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
682 al->level = '.';
683 machine = perf_session__find_host_machine(session);
684 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
685 al->level = 'g';
686 machine = perf_session__find_machine(session, pid);
687 if (machine == NULL) {
688 al->map = NULL;
689 return;
690 }
691 mg = &machine->kmaps;
692 } else {
693 /*
694 * 'u' means guest os user space.
695 * TODO: We don't support guest user space. Might support late.
696 */
697 if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest)
698 al->level = 'u';
699 else
700 al->level = 'H';
701 al->map = NULL;
702
703 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
704 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
705 !perf_guest)
706 al->filtered = true;
707 if ((cpumode == PERF_RECORD_MISC_USER ||
708 cpumode == PERF_RECORD_MISC_KERNEL) &&
709 !perf_host)
710 al->filtered = true;
711
712 return;
713 }
714 try_again:
715 al->map = map_groups__find(mg, type, al->addr);
716 if (al->map == NULL) {
717 /*
718 * If this is outside of all known maps, and is a negative
719 * address, try to look it up in the kernel dso, as it might be
720 * a vsyscall or vdso (which executes in user-mode).
721 *
722 * XXX This is nasty, we should have a symbol list in the
723 * "[vdso]" dso, but for now lets use the old trick of looking
724 * in the whole kernel symbol list.
725 */
726 if ((long long)al->addr < 0 &&
727 cpumode == PERF_RECORD_MISC_USER &&
728 machine && mg != &machine->kmaps) {
729 mg = &machine->kmaps;
730 goto try_again;
731 }
732 } else
733 al->addr = al->map->map_ip(al->map, al->addr);
734 }
735
736 void thread__find_addr_location(struct thread *self,
737 struct perf_session *session, u8 cpumode,
738 enum map_type type, pid_t pid, u64 addr,
739 struct addr_location *al,
740 symbol_filter_t filter)
741 {
742 thread__find_addr_map(self, session, cpumode, type, pid, addr, al);
743 if (al->map != NULL)
744 al->sym = map__find_symbol(al->map, al->addr, filter);
745 else
746 al->sym = NULL;
747 }
748
749 int perf_event__preprocess_sample(const union perf_event *event,
750 struct perf_session *session,
751 struct addr_location *al,
752 struct perf_sample *sample,
753 symbol_filter_t filter)
754 {
755 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
756 struct thread *thread = perf_session__findnew(session, event->ip.pid);
757
758 if (thread == NULL)
759 return -1;
760
761 if (symbol_conf.comm_list &&
762 !strlist__has_entry(symbol_conf.comm_list, thread->comm))
763 goto out_filtered;
764
765 dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
766 /*
767 * Have we already created the kernel maps for the host machine?
768 *
769 * This should have happened earlier, when we processed the kernel MMAP
770 * events, but for older perf.data files there was no such thing, so do
771 * it now.
772 */
773 if (cpumode == PERF_RECORD_MISC_KERNEL &&
774 session->host_machine.vmlinux_maps[MAP__FUNCTION] == NULL)
775 machine__create_kernel_maps(&session->host_machine);
776
777 thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
778 event->ip.pid, event->ip.ip, al);
779 dump_printf(" ...... dso: %s\n",
780 al->map ? al->map->dso->long_name :
781 al->level == 'H' ? "[hypervisor]" : "<not found>");
782 al->sym = NULL;
783 al->cpu = sample->cpu;
784
785 if (al->map) {
786 if (symbol_conf.dso_list &&
787 (!al->map || !al->map->dso ||
788 !(strlist__has_entry(symbol_conf.dso_list,
789 al->map->dso->short_name) ||
790 (al->map->dso->short_name != al->map->dso->long_name &&
791 strlist__has_entry(symbol_conf.dso_list,
792 al->map->dso->long_name)))))
793 goto out_filtered;
794
795 al->sym = map__find_symbol(al->map, al->addr, filter);
796 }
797
798 if (symbol_conf.sym_list && al->sym &&
799 !strlist__has_entry(symbol_conf.sym_list, al->sym->name))
800 goto out_filtered;
801
802 return 0;
803
804 out_filtered:
805 al->filtered = true;
806 return 0;
807 }
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