1
2#include <dirent.h>
3#include <errno.h>
4#include <fcntl.h>
5#include <inttypes.h>
6#include <linux/kernel.h>
7#include <linux/types.h>
8#include <sys/types.h>
9#include <sys/stat.h>
10#include <unistd.h>
11#include <uapi/linux/mman.h>
12#include <api/fs/fs.h>
13#include <linux/perf_event.h>
14#include "event.h"
15#include "debug.h"
16#include "hist.h"
17#include "machine.h"
18#include "sort.h"
19#include "string2.h"
20#include "strlist.h"
21#include "thread.h"
22#include "thread_map.h"
23#include "sane_ctype.h"
24#include "symbol/kallsyms.h"
25#include "asm/bug.h"
26#include "stat.h"
27
28static const char *perf_event__names[] = {
29 [0] = "TOTAL",
30 [PERF_RECORD_MMAP] = "MMAP",
31 [PERF_RECORD_MMAP2] = "MMAP2",
32 [PERF_RECORD_LOST] = "LOST",
33 [PERF_RECORD_COMM] = "COMM",
34 [PERF_RECORD_EXIT] = "EXIT",
35 [PERF_RECORD_THROTTLE] = "THROTTLE",
36 [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE",
37 [PERF_RECORD_FORK] = "FORK",
38 [PERF_RECORD_READ] = "READ",
39 [PERF_RECORD_SAMPLE] = "SAMPLE",
40 [PERF_RECORD_AUX] = "AUX",
41 [PERF_RECORD_ITRACE_START] = "ITRACE_START",
42 [PERF_RECORD_LOST_SAMPLES] = "LOST_SAMPLES",
43 [PERF_RECORD_SWITCH] = "SWITCH",
44 [PERF_RECORD_SWITCH_CPU_WIDE] = "SWITCH_CPU_WIDE",
45 [PERF_RECORD_NAMESPACES] = "NAMESPACES",
46 [PERF_RECORD_HEADER_ATTR] = "ATTR",
47 [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE",
48 [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA",
49 [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID",
50 [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND",
51 [PERF_RECORD_ID_INDEX] = "ID_INDEX",
52 [PERF_RECORD_AUXTRACE_INFO] = "AUXTRACE_INFO",
53 [PERF_RECORD_AUXTRACE] = "AUXTRACE",
54 [PERF_RECORD_AUXTRACE_ERROR] = "AUXTRACE_ERROR",
55 [PERF_RECORD_THREAD_MAP] = "THREAD_MAP",
56 [PERF_RECORD_CPU_MAP] = "CPU_MAP",
57 [PERF_RECORD_STAT_CONFIG] = "STAT_CONFIG",
58 [PERF_RECORD_STAT] = "STAT",
59 [PERF_RECORD_STAT_ROUND] = "STAT_ROUND",
60 [PERF_RECORD_EVENT_UPDATE] = "EVENT_UPDATE",
61 [PERF_RECORD_TIME_CONV] = "TIME_CONV",
62 [PERF_RECORD_HEADER_FEATURE] = "FEATURE",
63};
64
65static const char *perf_ns__names[] = {
66 [NET_NS_INDEX] = "net",
67 [UTS_NS_INDEX] = "uts",
68 [IPC_NS_INDEX] = "ipc",
69 [PID_NS_INDEX] = "pid",
70 [USER_NS_INDEX] = "user",
71 [MNT_NS_INDEX] = "mnt",
72 [CGROUP_NS_INDEX] = "cgroup",
73};
74
75const char *perf_event__name(unsigned int id)
76{
77 if (id >= ARRAY_SIZE(perf_event__names))
78 return "INVALID";
79 if (!perf_event__names[id])
80 return "UNKNOWN";
81 return perf_event__names[id];
82}
83
84static const char *perf_ns__name(unsigned int id)
85{
86 if (id >= ARRAY_SIZE(perf_ns__names))
87 return "UNKNOWN";
88 return perf_ns__names[id];
89}
90
91int perf_tool__process_synth_event(struct perf_tool *tool,
92 union perf_event *event,
93 struct machine *machine,
94 perf_event__handler_t process)
95{
96 struct perf_sample synth_sample = {
97 .pid = -1,
98 .tid = -1,
99 .time = -1,
100 .stream_id = -1,
101 .cpu = -1,
102 .period = 1,
103 .cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK,
104 };
105
106 return process(tool, event, &synth_sample, machine);
107};
108
109
110
111
112
113static int perf_event__get_comm_ids(pid_t pid, char *comm, size_t len,
114 pid_t *tgid, pid_t *ppid)
115{
116 char filename[PATH_MAX];
117 char bf[4096];
118 int fd;
119 size_t size = 0;
120 ssize_t n;
121 char *name, *tgids, *ppids;
122
123 *tgid = -1;
124 *ppid = -1;
125
126 snprintf(filename, sizeof(filename), "/proc/%d/status", pid);
127
128 fd = open(filename, O_RDONLY);
129 if (fd < 0) {
130 pr_debug("couldn't open %s\n", filename);
131 return -1;
132 }
133
134 n = read(fd, bf, sizeof(bf) - 1);
135 close(fd);
136 if (n <= 0) {
137 pr_warning("Couldn't get COMM, tigd and ppid for pid %d\n",
138 pid);
139 return -1;
140 }
141 bf[n] = '\0';
142
143 name = strstr(bf, "Name:");
144 tgids = strstr(bf, "Tgid:");
145 ppids = strstr(bf, "PPid:");
146
147 if (name) {
148 char *nl;
149
150 name += 5;
151 name = ltrim(name);
152
153 nl = strchr(name, '\n');
154 if (nl)
155 *nl = '\0';
156
157 size = strlen(name);
158 if (size >= len)
159 size = len - 1;
160 memcpy(comm, name, size);
161 comm[size] = '\0';
162 } else {
163 pr_debug("Name: string not found for pid %d\n", pid);
164 }
165
166 if (tgids) {
167 tgids += 5;
168 *tgid = atoi(tgids);
169 } else {
170 pr_debug("Tgid: string not found for pid %d\n", pid);
171 }
172
173 if (ppids) {
174 ppids += 5;
175 *ppid = atoi(ppids);
176 } else {
177 pr_debug("PPid: string not found for pid %d\n", pid);
178 }
179
180 return 0;
181}
182
183static int perf_event__prepare_comm(union perf_event *event, pid_t pid,
184 struct machine *machine,
185 pid_t *tgid, pid_t *ppid)
186{
187 size_t size;
188
189 *ppid = -1;
190
191 memset(&event->comm, 0, sizeof(event->comm));
192
193 if (machine__is_host(machine)) {
194 if (perf_event__get_comm_ids(pid, event->comm.comm,
195 sizeof(event->comm.comm),
196 tgid, ppid) != 0) {
197 return -1;
198 }
199 } else {
200 *tgid = machine->pid;
201 }
202
203 if (*tgid < 0)
204 return -1;
205
206 event->comm.pid = *tgid;
207 event->comm.header.type = PERF_RECORD_COMM;
208
209 size = strlen(event->comm.comm) + 1;
210 size = PERF_ALIGN(size, sizeof(u64));
211 memset(event->comm.comm + size, 0, machine->id_hdr_size);
212 event->comm.header.size = (sizeof(event->comm) -
213 (sizeof(event->comm.comm) - size) +
214 machine->id_hdr_size);
215 event->comm.tid = pid;
216
217 return 0;
218}
219
220pid_t perf_event__synthesize_comm(struct perf_tool *tool,
221 union perf_event *event, pid_t pid,
222 perf_event__handler_t process,
223 struct machine *machine)
224{
225 pid_t tgid, ppid;
226
227 if (perf_event__prepare_comm(event, pid, machine, &tgid, &ppid) != 0)
228 return -1;
229
230 if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
231 return -1;
232
233 return tgid;
234}
235
236static void perf_event__get_ns_link_info(pid_t pid, const char *ns,
237 struct perf_ns_link_info *ns_link_info)
238{
239 struct stat64 st;
240 char proc_ns[128];
241
242 sprintf(proc_ns, "/proc/%u/ns/%s", pid, ns);
243 if (stat64(proc_ns, &st) == 0) {
244 ns_link_info->dev = st.st_dev;
245 ns_link_info->ino = st.st_ino;
246 }
247}
248
249int perf_event__synthesize_namespaces(struct perf_tool *tool,
250 union perf_event *event,
251 pid_t pid, pid_t tgid,
252 perf_event__handler_t process,
253 struct machine *machine)
254{
255 u32 idx;
256 struct perf_ns_link_info *ns_link_info;
257
258 if (!tool || !tool->namespace_events)
259 return 0;
260
261 memset(&event->namespaces, 0, (sizeof(event->namespaces) +
262 (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) +
263 machine->id_hdr_size));
264
265 event->namespaces.pid = tgid;
266 event->namespaces.tid = pid;
267
268 event->namespaces.nr_namespaces = NR_NAMESPACES;
269
270 ns_link_info = event->namespaces.link_info;
271
272 for (idx = 0; idx < event->namespaces.nr_namespaces; idx++)
273 perf_event__get_ns_link_info(pid, perf_ns__name(idx),
274 &ns_link_info[idx]);
275
276 event->namespaces.header.type = PERF_RECORD_NAMESPACES;
277
278 event->namespaces.header.size = (sizeof(event->namespaces) +
279 (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) +
280 machine->id_hdr_size);
281
282 if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
283 return -1;
284
285 return 0;
286}
287
288static int perf_event__synthesize_fork(struct perf_tool *tool,
289 union perf_event *event,
290 pid_t pid, pid_t tgid, pid_t ppid,
291 perf_event__handler_t process,
292 struct machine *machine)
293{
294 memset(&event->fork, 0, sizeof(event->fork) + machine->id_hdr_size);
295
296
297
298
299
300
301 if (tgid == pid) {
302 event->fork.ppid = ppid;
303 event->fork.ptid = ppid;
304 } else {
305 event->fork.ppid = tgid;
306 event->fork.ptid = tgid;
307 }
308 event->fork.pid = tgid;
309 event->fork.tid = pid;
310 event->fork.header.type = PERF_RECORD_FORK;
311
312 event->fork.header.size = (sizeof(event->fork) + machine->id_hdr_size);
313
314 if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
315 return -1;
316
317 return 0;
318}
319
320int perf_event__synthesize_mmap_events(struct perf_tool *tool,
321 union perf_event *event,
322 pid_t pid, pid_t tgid,
323 perf_event__handler_t process,
324 struct machine *machine,
325 bool mmap_data,
326 unsigned int proc_map_timeout)
327{
328 char filename[PATH_MAX];
329 FILE *fp;
330 unsigned long long t;
331 bool truncation = false;
332 unsigned long long timeout = proc_map_timeout * 1000000ULL;
333 int rc = 0;
334 const char *hugetlbfs_mnt = hugetlbfs__mountpoint();
335 int hugetlbfs_mnt_len = hugetlbfs_mnt ? strlen(hugetlbfs_mnt) : 0;
336
337 if (machine__is_default_guest(machine))
338 return 0;
339
340 snprintf(filename, sizeof(filename), "%s/proc/%d/task/%d/maps",
341 machine->root_dir, pid, pid);
342
343 fp = fopen(filename, "r");
344 if (fp == NULL) {
345
346
347
348 pr_debug("couldn't open %s\n", filename);
349 return -1;
350 }
351
352 event->header.type = PERF_RECORD_MMAP2;
353 t = rdclock();
354
355 while (1) {
356 char bf[BUFSIZ];
357 char prot[5];
358 char execname[PATH_MAX];
359 char anonstr[] = "//anon";
360 unsigned int ino;
361 size_t size;
362 ssize_t n;
363
364 if (fgets(bf, sizeof(bf), fp) == NULL)
365 break;
366
367 if ((rdclock() - t) > timeout) {
368 pr_warning("Reading %s time out. "
369 "You may want to increase "
370 "the time limit by --proc-map-timeout\n",
371 filename);
372 truncation = true;
373 goto out;
374 }
375
376
377 strcpy(execname, "");
378
379
380 n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %x:%x %u %[^\n]\n",
381 &event->mmap2.start, &event->mmap2.len, prot,
382 &event->mmap2.pgoff, &event->mmap2.maj,
383 &event->mmap2.min,
384 &ino, execname);
385
386
387
388
389 if (n < 7)
390 continue;
391
392 event->mmap2.ino = (u64)ino;
393
394
395
396
397 if (machine__is_host(machine))
398 event->header.misc = PERF_RECORD_MISC_USER;
399 else
400 event->header.misc = PERF_RECORD_MISC_GUEST_USER;
401
402
403 event->mmap2.prot = 0;
404 event->mmap2.flags = 0;
405 if (prot[0] == 'r')
406 event->mmap2.prot |= PROT_READ;
407 if (prot[1] == 'w')
408 event->mmap2.prot |= PROT_WRITE;
409 if (prot[2] == 'x')
410 event->mmap2.prot |= PROT_EXEC;
411
412 if (prot[3] == 's')
413 event->mmap2.flags |= MAP_SHARED;
414 else
415 event->mmap2.flags |= MAP_PRIVATE;
416
417 if (prot[2] != 'x') {
418 if (!mmap_data || prot[0] != 'r')
419 continue;
420
421 event->header.misc |= PERF_RECORD_MISC_MMAP_DATA;
422 }
423
424out:
425 if (truncation)
426 event->header.misc |= PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT;
427
428 if (!strcmp(execname, ""))
429 strcpy(execname, anonstr);
430
431 if (hugetlbfs_mnt_len &&
432 !strncmp(execname, hugetlbfs_mnt, hugetlbfs_mnt_len)) {
433 strcpy(execname, anonstr);
434 event->mmap2.flags |= MAP_HUGETLB;
435 }
436
437 size = strlen(execname) + 1;
438 memcpy(event->mmap2.filename, execname, size);
439 size = PERF_ALIGN(size, sizeof(u64));
440 event->mmap2.len -= event->mmap.start;
441 event->mmap2.header.size = (sizeof(event->mmap2) -
442 (sizeof(event->mmap2.filename) - size));
443 memset(event->mmap2.filename + size, 0, machine->id_hdr_size);
444 event->mmap2.header.size += machine->id_hdr_size;
445 event->mmap2.pid = tgid;
446 event->mmap2.tid = pid;
447
448 if (perf_tool__process_synth_event(tool, event, machine, process) != 0) {
449 rc = -1;
450 break;
451 }
452
453 if (truncation)
454 break;
455 }
456
457 fclose(fp);
458 return rc;
459}
460
461int perf_event__synthesize_modules(struct perf_tool *tool,
462 perf_event__handler_t process,
463 struct machine *machine)
464{
465 int rc = 0;
466 struct map *pos;
467 struct maps *maps = machine__kernel_maps(machine);
468 union perf_event *event = zalloc((sizeof(event->mmap) +
469 machine->id_hdr_size));
470 if (event == NULL) {
471 pr_debug("Not enough memory synthesizing mmap event "
472 "for kernel modules\n");
473 return -1;
474 }
475
476 event->header.type = PERF_RECORD_MMAP;
477
478
479
480
481
482 if (machine__is_host(machine))
483 event->header.misc = PERF_RECORD_MISC_KERNEL;
484 else
485 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
486
487 for (pos = maps__first(maps); pos; pos = map__next(pos)) {
488 size_t size;
489
490 if (!__map__is_kmodule(pos))
491 continue;
492
493 size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
494 event->mmap.header.type = PERF_RECORD_MMAP;
495 event->mmap.header.size = (sizeof(event->mmap) -
496 (sizeof(event->mmap.filename) - size));
497 memset(event->mmap.filename + size, 0, machine->id_hdr_size);
498 event->mmap.header.size += machine->id_hdr_size;
499 event->mmap.start = pos->start;
500 event->mmap.len = pos->end - pos->start;
501 event->mmap.pid = machine->pid;
502
503 memcpy(event->mmap.filename, pos->dso->long_name,
504 pos->dso->long_name_len + 1);
505 if (perf_tool__process_synth_event(tool, event, machine, process) != 0) {
506 rc = -1;
507 break;
508 }
509 }
510
511 free(event);
512 return rc;
513}
514
515static int __event__synthesize_thread(union perf_event *comm_event,
516 union perf_event *mmap_event,
517 union perf_event *fork_event,
518 union perf_event *namespaces_event,
519 pid_t pid, int full,
520 perf_event__handler_t process,
521 struct perf_tool *tool,
522 struct machine *machine,
523 bool mmap_data,
524 unsigned int proc_map_timeout)
525{
526 char filename[PATH_MAX];
527 DIR *tasks;
528 struct dirent *dirent;
529 pid_t tgid, ppid;
530 int rc = 0;
531
532
533 if (!full) {
534 tgid = perf_event__synthesize_comm(tool, comm_event, pid,
535 process, machine);
536
537 if (tgid == -1)
538 return -1;
539
540 if (perf_event__synthesize_namespaces(tool, namespaces_event, pid,
541 tgid, process, machine) < 0)
542 return -1;
543
544
545 return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
546 process, machine, mmap_data,
547 proc_map_timeout);
548 }
549
550 if (machine__is_default_guest(machine))
551 return 0;
552
553 snprintf(filename, sizeof(filename), "%s/proc/%d/task",
554 machine->root_dir, pid);
555
556 tasks = opendir(filename);
557 if (tasks == NULL) {
558 pr_debug("couldn't open %s\n", filename);
559 return 0;
560 }
561
562 while ((dirent = readdir(tasks)) != NULL) {
563 char *end;
564 pid_t _pid;
565
566 _pid = strtol(dirent->d_name, &end, 10);
567 if (*end)
568 continue;
569
570 rc = -1;
571 if (perf_event__prepare_comm(comm_event, _pid, machine,
572 &tgid, &ppid) != 0)
573 break;
574
575 if (perf_event__synthesize_fork(tool, fork_event, _pid, tgid,
576 ppid, process, machine) < 0)
577 break;
578
579 if (perf_event__synthesize_namespaces(tool, namespaces_event, _pid,
580 tgid, process, machine) < 0)
581 break;
582
583
584
585
586 if (perf_tool__process_synth_event(tool, comm_event, machine, process) != 0)
587 break;
588
589 rc = 0;
590 if (_pid == pid) {
591
592 rc = perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
593 process, machine, mmap_data, proc_map_timeout);
594 if (rc)
595 break;
596 }
597 }
598
599 closedir(tasks);
600 return rc;
601}
602
603int perf_event__synthesize_thread_map(struct perf_tool *tool,
604 struct thread_map *threads,
605 perf_event__handler_t process,
606 struct machine *machine,
607 bool mmap_data,
608 unsigned int proc_map_timeout)
609{
610 union perf_event *comm_event, *mmap_event, *fork_event;
611 union perf_event *namespaces_event;
612 int err = -1, thread, j;
613
614 comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
615 if (comm_event == NULL)
616 goto out;
617
618 mmap_event = malloc(sizeof(mmap_event->mmap2) + machine->id_hdr_size);
619 if (mmap_event == NULL)
620 goto out_free_comm;
621
622 fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
623 if (fork_event == NULL)
624 goto out_free_mmap;
625
626 namespaces_event = malloc(sizeof(namespaces_event->namespaces) +
627 (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) +
628 machine->id_hdr_size);
629 if (namespaces_event == NULL)
630 goto out_free_fork;
631
632 err = 0;
633 for (thread = 0; thread < threads->nr; ++thread) {
634 if (__event__synthesize_thread(comm_event, mmap_event,
635 fork_event, namespaces_event,
636 thread_map__pid(threads, thread), 0,
637 process, tool, machine,
638 mmap_data, proc_map_timeout)) {
639 err = -1;
640 break;
641 }
642
643
644
645
646
647 if ((int) comm_event->comm.pid != thread_map__pid(threads, thread)) {
648 bool need_leader = true;
649
650
651 for (j = 0; j < threads->nr; ++j) {
652 if ((int) comm_event->comm.pid == thread_map__pid(threads, j)) {
653 need_leader = false;
654 break;
655 }
656 }
657
658
659 if (need_leader &&
660 __event__synthesize_thread(comm_event, mmap_event,
661 fork_event, namespaces_event,
662 comm_event->comm.pid, 0,
663 process, tool, machine,
664 mmap_data, proc_map_timeout)) {
665 err = -1;
666 break;
667 }
668 }
669 }
670 free(namespaces_event);
671out_free_fork:
672 free(fork_event);
673out_free_mmap:
674 free(mmap_event);
675out_free_comm:
676 free(comm_event);
677out:
678 return err;
679}
680
681static int __perf_event__synthesize_threads(struct perf_tool *tool,
682 perf_event__handler_t process,
683 struct machine *machine,
684 bool mmap_data,
685 unsigned int proc_map_timeout,
686 struct dirent **dirent,
687 int start,
688 int num)
689{
690 union perf_event *comm_event, *mmap_event, *fork_event;
691 union perf_event *namespaces_event;
692 int err = -1;
693 char *end;
694 pid_t pid;
695 int i;
696
697 comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
698 if (comm_event == NULL)
699 goto out;
700
701 mmap_event = malloc(sizeof(mmap_event->mmap2) + machine->id_hdr_size);
702 if (mmap_event == NULL)
703 goto out_free_comm;
704
705 fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
706 if (fork_event == NULL)
707 goto out_free_mmap;
708
709 namespaces_event = malloc(sizeof(namespaces_event->namespaces) +
710 (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) +
711 machine->id_hdr_size);
712 if (namespaces_event == NULL)
713 goto out_free_fork;
714
715 for (i = start; i < start + num; i++) {
716 if (!isdigit(dirent[i]->d_name[0]))
717 continue;
718
719 pid = (pid_t)strtol(dirent[i]->d_name, &end, 10);
720
721 if (*end)
722 continue;
723
724
725
726
727 __event__synthesize_thread(comm_event, mmap_event, fork_event,
728 namespaces_event, pid, 1, process,
729 tool, machine, mmap_data,
730 proc_map_timeout);
731 }
732 err = 0;
733
734 free(namespaces_event);
735out_free_fork:
736 free(fork_event);
737out_free_mmap:
738 free(mmap_event);
739out_free_comm:
740 free(comm_event);
741out:
742 return err;
743}
744
745struct synthesize_threads_arg {
746 struct perf_tool *tool;
747 perf_event__handler_t process;
748 struct machine *machine;
749 bool mmap_data;
750 unsigned int proc_map_timeout;
751 struct dirent **dirent;
752 int num;
753 int start;
754};
755
756static void *synthesize_threads_worker(void *arg)
757{
758 struct synthesize_threads_arg *args = arg;
759
760 __perf_event__synthesize_threads(args->tool, args->process,
761 args->machine, args->mmap_data,
762 args->proc_map_timeout, args->dirent,
763 args->start, args->num);
764 return NULL;
765}
766
767int perf_event__synthesize_threads(struct perf_tool *tool,
768 perf_event__handler_t process,
769 struct machine *machine,
770 bool mmap_data,
771 unsigned int proc_map_timeout,
772 unsigned int nr_threads_synthesize)
773{
774 struct synthesize_threads_arg *args = NULL;
775 pthread_t *synthesize_threads = NULL;
776 char proc_path[PATH_MAX];
777 struct dirent **dirent;
778 int num_per_thread;
779 int m, n, i, j;
780 int thread_nr;
781 int base = 0;
782 int err = -1;
783
784
785 if (machine__is_default_guest(machine))
786 return 0;
787
788 snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir);
789 n = scandir(proc_path, &dirent, 0, alphasort);
790 if (n < 0)
791 return err;
792
793 if (nr_threads_synthesize == UINT_MAX)
794 thread_nr = sysconf(_SC_NPROCESSORS_ONLN);
795 else
796 thread_nr = nr_threads_synthesize;
797
798 if (thread_nr <= 1) {
799 err = __perf_event__synthesize_threads(tool, process,
800 machine, mmap_data,
801 proc_map_timeout,
802 dirent, base, n);
803 goto free_dirent;
804 }
805 if (thread_nr > n)
806 thread_nr = n;
807
808 synthesize_threads = calloc(sizeof(pthread_t), thread_nr);
809 if (synthesize_threads == NULL)
810 goto free_dirent;
811
812 args = calloc(sizeof(*args), thread_nr);
813 if (args == NULL)
814 goto free_threads;
815
816 num_per_thread = n / thread_nr;
817 m = n % thread_nr;
818 for (i = 0; i < thread_nr; i++) {
819 args[i].tool = tool;
820 args[i].process = process;
821 args[i].machine = machine;
822 args[i].mmap_data = mmap_data;
823 args[i].proc_map_timeout = proc_map_timeout;
824 args[i].dirent = dirent;
825 }
826 for (i = 0; i < m; i++) {
827 args[i].num = num_per_thread + 1;
828 args[i].start = i * args[i].num;
829 }
830 if (i != 0)
831 base = args[i-1].start + args[i-1].num;
832 for (j = i; j < thread_nr; j++) {
833 args[j].num = num_per_thread;
834 args[j].start = base + (j - i) * args[i].num;
835 }
836
837 for (i = 0; i < thread_nr; i++) {
838 if (pthread_create(&synthesize_threads[i], NULL,
839 synthesize_threads_worker, &args[i]))
840 goto out_join;
841 }
842 err = 0;
843out_join:
844 for (i = 0; i < thread_nr; i++)
845 pthread_join(synthesize_threads[i], NULL);
846 free(args);
847free_threads:
848 free(synthesize_threads);
849free_dirent:
850 for (i = 0; i < n; i++)
851 free(dirent[i]);
852 free(dirent);
853
854 return err;
855}
856
857struct process_symbol_args {
858 const char *name;
859 u64 start;
860};
861
862static int find_symbol_cb(void *arg, const char *name, char type,
863 u64 start)
864{
865 struct process_symbol_args *args = arg;
866
867
868
869
870
871 if (!(kallsyms__is_function(type) ||
872 type == 'A') || strcmp(name, args->name))
873 return 0;
874
875 args->start = start;
876 return 1;
877}
878
879int kallsyms__get_function_start(const char *kallsyms_filename,
880 const char *symbol_name, u64 *addr)
881{
882 struct process_symbol_args args = { .name = symbol_name, };
883
884 if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0)
885 return -1;
886
887 *addr = args.start;
888 return 0;
889}
890
891int __weak perf_event__synthesize_extra_kmaps(struct perf_tool *tool __maybe_unused,
892 perf_event__handler_t process __maybe_unused,
893 struct machine *machine __maybe_unused)
894{
895 return 0;
896}
897
898static int __perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
899 perf_event__handler_t process,
900 struct machine *machine)
901{
902 size_t size;
903 struct map *map = machine__kernel_map(machine);
904 struct kmap *kmap;
905 int err;
906 union perf_event *event;
907
908 if (symbol_conf.kptr_restrict)
909 return -1;
910 if (map == NULL)
911 return -1;
912
913
914
915
916
917
918 event = zalloc((sizeof(event->mmap) + machine->id_hdr_size));
919 if (event == NULL) {
920 pr_debug("Not enough memory synthesizing mmap event "
921 "for kernel modules\n");
922 return -1;
923 }
924
925 if (machine__is_host(machine)) {
926
927
928
929
930 event->header.misc = PERF_RECORD_MISC_KERNEL;
931 } else {
932 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
933 }
934
935 kmap = map__kmap(map);
936 size = snprintf(event->mmap.filename, sizeof(event->mmap.filename),
937 "%s%s", machine->mmap_name, kmap->ref_reloc_sym->name) + 1;
938 size = PERF_ALIGN(size, sizeof(u64));
939 event->mmap.header.type = PERF_RECORD_MMAP;
940 event->mmap.header.size = (sizeof(event->mmap) -
941 (sizeof(event->mmap.filename) - size) + machine->id_hdr_size);
942 event->mmap.pgoff = kmap->ref_reloc_sym->addr;
943 event->mmap.start = map->start;
944 event->mmap.len = map->end - event->mmap.start;
945 event->mmap.pid = machine->pid;
946
947 err = perf_tool__process_synth_event(tool, event, machine, process);
948 free(event);
949
950 return err;
951}
952
953int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
954 perf_event__handler_t process,
955 struct machine *machine)
956{
957 int err;
958
959 err = __perf_event__synthesize_kernel_mmap(tool, process, machine);
960 if (err < 0)
961 return err;
962
963 return perf_event__synthesize_extra_kmaps(tool, process, machine);
964}
965
966int perf_event__synthesize_thread_map2(struct perf_tool *tool,
967 struct thread_map *threads,
968 perf_event__handler_t process,
969 struct machine *machine)
970{
971 union perf_event *event;
972 int i, err, size;
973
974 size = sizeof(event->thread_map);
975 size += threads->nr * sizeof(event->thread_map.entries[0]);
976
977 event = zalloc(size);
978 if (!event)
979 return -ENOMEM;
980
981 event->header.type = PERF_RECORD_THREAD_MAP;
982 event->header.size = size;
983 event->thread_map.nr = threads->nr;
984
985 for (i = 0; i < threads->nr; i++) {
986 struct thread_map_event_entry *entry = &event->thread_map.entries[i];
987 char *comm = thread_map__comm(threads, i);
988
989 if (!comm)
990 comm = (char *) "";
991
992 entry->pid = thread_map__pid(threads, i);
993 strncpy((char *) &entry->comm, comm, sizeof(entry->comm));
994 }
995
996 err = process(tool, event, NULL, machine);
997
998 free(event);
999 return err;
1000}
1001
1002static void synthesize_cpus(struct cpu_map_entries *cpus,
1003 struct cpu_map *map)
1004{
1005 int i;
1006
1007 cpus->nr = map->nr;
1008
1009 for (i = 0; i < map->nr; i++)
1010 cpus->cpu[i] = map->map[i];
1011}
1012
1013static void synthesize_mask(struct cpu_map_mask *mask,
1014 struct cpu_map *map, int max)
1015{
1016 int i;
1017
1018 mask->nr = BITS_TO_LONGS(max);
1019 mask->long_size = sizeof(long);
1020
1021 for (i = 0; i < map->nr; i++)
1022 set_bit(map->map[i], mask->mask);
1023}
1024
1025static size_t cpus_size(struct cpu_map *map)
1026{
1027 return sizeof(struct cpu_map_entries) + map->nr * sizeof(u16);
1028}
1029
1030static size_t mask_size(struct cpu_map *map, int *max)
1031{
1032 int i;
1033
1034 *max = 0;
1035
1036 for (i = 0; i < map->nr; i++) {
1037
1038 int bit = map->map[i] + 1;
1039
1040 if (bit > *max)
1041 *max = bit;
1042 }
1043
1044 return sizeof(struct cpu_map_mask) + BITS_TO_LONGS(*max) * sizeof(long);
1045}
1046
1047void *cpu_map_data__alloc(struct cpu_map *map, size_t *size, u16 *type, int *max)
1048{
1049 size_t size_cpus, size_mask;
1050 bool is_dummy = cpu_map__empty(map);
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065 size_cpus = cpus_size(map);
1066 size_mask = mask_size(map, max);
1067
1068 if (is_dummy || (size_cpus < size_mask)) {
1069 *size += size_cpus;
1070 *type = PERF_CPU_MAP__CPUS;
1071 } else {
1072 *size += size_mask;
1073 *type = PERF_CPU_MAP__MASK;
1074 }
1075
1076 *size += sizeof(struct cpu_map_data);
1077 return zalloc(*size);
1078}
1079
1080void cpu_map_data__synthesize(struct cpu_map_data *data, struct cpu_map *map,
1081 u16 type, int max)
1082{
1083 data->type = type;
1084
1085 switch (type) {
1086 case PERF_CPU_MAP__CPUS:
1087 synthesize_cpus((struct cpu_map_entries *) data->data, map);
1088 break;
1089 case PERF_CPU_MAP__MASK:
1090 synthesize_mask((struct cpu_map_mask *) data->data, map, max);
1091 default:
1092 break;
1093 };
1094}
1095
1096static struct cpu_map_event* cpu_map_event__new(struct cpu_map *map)
1097{
1098 size_t size = sizeof(struct cpu_map_event);
1099 struct cpu_map_event *event;
1100 int max;
1101 u16 type;
1102
1103 event = cpu_map_data__alloc(map, &size, &type, &max);
1104 if (!event)
1105 return NULL;
1106
1107 event->header.type = PERF_RECORD_CPU_MAP;
1108 event->header.size = size;
1109 event->data.type = type;
1110
1111 cpu_map_data__synthesize(&event->data, map, type, max);
1112 return event;
1113}
1114
1115int perf_event__synthesize_cpu_map(struct perf_tool *tool,
1116 struct cpu_map *map,
1117 perf_event__handler_t process,
1118 struct machine *machine)
1119{
1120 struct cpu_map_event *event;
1121 int err;
1122
1123 event = cpu_map_event__new(map);
1124 if (!event)
1125 return -ENOMEM;
1126
1127 err = process(tool, (union perf_event *) event, NULL, machine);
1128
1129 free(event);
1130 return err;
1131}
1132
1133int perf_event__synthesize_stat_config(struct perf_tool *tool,
1134 struct perf_stat_config *config,
1135 perf_event__handler_t process,
1136 struct machine *machine)
1137{
1138 struct stat_config_event *event;
1139 int size, i = 0, err;
1140
1141 size = sizeof(*event);
1142 size += (PERF_STAT_CONFIG_TERM__MAX * sizeof(event->data[0]));
1143
1144 event = zalloc(size);
1145 if (!event)
1146 return -ENOMEM;
1147
1148 event->header.type = PERF_RECORD_STAT_CONFIG;
1149 event->header.size = size;
1150 event->nr = PERF_STAT_CONFIG_TERM__MAX;
1151
1152#define ADD(__term, __val) \
1153 event->data[i].tag = PERF_STAT_CONFIG_TERM__##__term; \
1154 event->data[i].val = __val; \
1155 i++;
1156
1157 ADD(AGGR_MODE, config->aggr_mode)
1158 ADD(INTERVAL, config->interval)
1159 ADD(SCALE, config->scale)
1160
1161 WARN_ONCE(i != PERF_STAT_CONFIG_TERM__MAX,
1162 "stat config terms unbalanced\n");
1163#undef ADD
1164
1165 err = process(tool, (union perf_event *) event, NULL, machine);
1166
1167 free(event);
1168 return err;
1169}
1170
1171int perf_event__synthesize_stat(struct perf_tool *tool,
1172 u32 cpu, u32 thread, u64 id,
1173 struct perf_counts_values *count,
1174 perf_event__handler_t process,
1175 struct machine *machine)
1176{
1177 struct stat_event event;
1178
1179 event.header.type = PERF_RECORD_STAT;
1180 event.header.size = sizeof(event);
1181 event.header.misc = 0;
1182
1183 event.id = id;
1184 event.cpu = cpu;
1185 event.thread = thread;
1186 event.val = count->val;
1187 event.ena = count->ena;
1188 event.run = count->run;
1189
1190 return process(tool, (union perf_event *) &event, NULL, machine);
1191}
1192
1193int perf_event__synthesize_stat_round(struct perf_tool *tool,
1194 u64 evtime, u64 type,
1195 perf_event__handler_t process,
1196 struct machine *machine)
1197{
1198 struct stat_round_event event;
1199
1200 event.header.type = PERF_RECORD_STAT_ROUND;
1201 event.header.size = sizeof(event);
1202 event.header.misc = 0;
1203
1204 event.time = evtime;
1205 event.type = type;
1206
1207 return process(tool, (union perf_event *) &event, NULL, machine);
1208}
1209
1210void perf_event__read_stat_config(struct perf_stat_config *config,
1211 struct stat_config_event *event)
1212{
1213 unsigned i;
1214
1215 for (i = 0; i < event->nr; i++) {
1216
1217 switch (event->data[i].tag) {
1218#define CASE(__term, __val) \
1219 case PERF_STAT_CONFIG_TERM__##__term: \
1220 config->__val = event->data[i].val; \
1221 break;
1222
1223 CASE(AGGR_MODE, aggr_mode)
1224 CASE(SCALE, scale)
1225 CASE(INTERVAL, interval)
1226#undef CASE
1227 default:
1228 pr_warning("unknown stat config term %" PRIu64 "\n",
1229 event->data[i].tag);
1230 }
1231 }
1232}
1233
1234size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
1235{
1236 const char *s;
1237
1238 if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC)
1239 s = " exec";
1240 else
1241 s = "";
1242
1243 return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid);
1244}
1245
1246size_t perf_event__fprintf_namespaces(union perf_event *event, FILE *fp)
1247{
1248 size_t ret = 0;
1249 struct perf_ns_link_info *ns_link_info;
1250 u32 nr_namespaces, idx;
1251
1252 ns_link_info = event->namespaces.link_info;
1253 nr_namespaces = event->namespaces.nr_namespaces;
1254
1255 ret += fprintf(fp, " %d/%d - nr_namespaces: %u\n\t\t[",
1256 event->namespaces.pid,
1257 event->namespaces.tid,
1258 nr_namespaces);
1259
1260 for (idx = 0; idx < nr_namespaces; idx++) {
1261 if (idx && (idx % 4 == 0))
1262 ret += fprintf(fp, "\n\t\t ");
1263
1264 ret += fprintf(fp, "%u/%s: %" PRIu64 "/%#" PRIx64 "%s", idx,
1265 perf_ns__name(idx), (u64)ns_link_info[idx].dev,
1266 (u64)ns_link_info[idx].ino,
1267 ((idx + 1) != nr_namespaces) ? ", " : "]\n");
1268 }
1269
1270 return ret;
1271}
1272
1273int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
1274 union perf_event *event,
1275 struct perf_sample *sample,
1276 struct machine *machine)
1277{
1278 return machine__process_comm_event(machine, event, sample);
1279}
1280
1281int perf_event__process_namespaces(struct perf_tool *tool __maybe_unused,
1282 union perf_event *event,
1283 struct perf_sample *sample,
1284 struct machine *machine)
1285{
1286 return machine__process_namespaces_event(machine, event, sample);
1287}
1288
1289int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
1290 union perf_event *event,
1291 struct perf_sample *sample,
1292 struct machine *machine)
1293{
1294 return machine__process_lost_event(machine, event, sample);
1295}
1296
1297int perf_event__process_aux(struct perf_tool *tool __maybe_unused,
1298 union perf_event *event,
1299 struct perf_sample *sample __maybe_unused,
1300 struct machine *machine)
1301{
1302 return machine__process_aux_event(machine, event);
1303}
1304
1305int perf_event__process_itrace_start(struct perf_tool *tool __maybe_unused,
1306 union perf_event *event,
1307 struct perf_sample *sample __maybe_unused,
1308 struct machine *machine)
1309{
1310 return machine__process_itrace_start_event(machine, event);
1311}
1312
1313int perf_event__process_lost_samples(struct perf_tool *tool __maybe_unused,
1314 union perf_event *event,
1315 struct perf_sample *sample,
1316 struct machine *machine)
1317{
1318 return machine__process_lost_samples_event(machine, event, sample);
1319}
1320
1321int perf_event__process_switch(struct perf_tool *tool __maybe_unused,
1322 union perf_event *event,
1323 struct perf_sample *sample __maybe_unused,
1324 struct machine *machine)
1325{
1326 return machine__process_switch_event(machine, event);
1327}
1328
1329size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
1330{
1331 return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %c %s\n",
1332 event->mmap.pid, event->mmap.tid, event->mmap.start,
1333 event->mmap.len, event->mmap.pgoff,
1334 (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
1335 event->mmap.filename);
1336}
1337
1338size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
1339{
1340 return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64
1341 " %02x:%02x %"PRIu64" %"PRIu64"]: %c%c%c%c %s\n",
1342 event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
1343 event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj,
1344 event->mmap2.min, event->mmap2.ino,
1345 event->mmap2.ino_generation,
1346 (event->mmap2.prot & PROT_READ) ? 'r' : '-',
1347 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
1348 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
1349 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
1350 event->mmap2.filename);
1351}
1352
1353size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp)
1354{
1355 struct thread_map *threads = thread_map__new_event(&event->thread_map);
1356 size_t ret;
1357
1358 ret = fprintf(fp, " nr: ");
1359
1360 if (threads)
1361 ret += thread_map__fprintf(threads, fp);
1362 else
1363 ret += fprintf(fp, "failed to get threads from event\n");
1364
1365 thread_map__put(threads);
1366 return ret;
1367}
1368
1369size_t perf_event__fprintf_cpu_map(union perf_event *event, FILE *fp)
1370{
1371 struct cpu_map *cpus = cpu_map__new_data(&event->cpu_map.data);
1372 size_t ret;
1373
1374 ret = fprintf(fp, ": ");
1375
1376 if (cpus)
1377 ret += cpu_map__fprintf(cpus, fp);
1378 else
1379 ret += fprintf(fp, "failed to get cpumap from event\n");
1380
1381 cpu_map__put(cpus);
1382 return ret;
1383}
1384
1385int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
1386 union perf_event *event,
1387 struct perf_sample *sample,
1388 struct machine *machine)
1389{
1390 return machine__process_mmap_event(machine, event, sample);
1391}
1392
1393int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused,
1394 union perf_event *event,
1395 struct perf_sample *sample,
1396 struct machine *machine)
1397{
1398 return machine__process_mmap2_event(machine, event, sample);
1399}
1400
1401size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
1402{
1403 return fprintf(fp, "(%d:%d):(%d:%d)\n",
1404 event->fork.pid, event->fork.tid,
1405 event->fork.ppid, event->fork.ptid);
1406}
1407
1408int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
1409 union perf_event *event,
1410 struct perf_sample *sample,
1411 struct machine *machine)
1412{
1413 return machine__process_fork_event(machine, event, sample);
1414}
1415
1416int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
1417 union perf_event *event,
1418 struct perf_sample *sample,
1419 struct machine *machine)
1420{
1421 return machine__process_exit_event(machine, event, sample);
1422}
1423
1424size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp)
1425{
1426 return fprintf(fp, " offset: %#"PRIx64" size: %#"PRIx64" flags: %#"PRIx64" [%s%s%s]\n",
1427 event->aux.aux_offset, event->aux.aux_size,
1428 event->aux.flags,
1429 event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "",
1430 event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "",
1431 event->aux.flags & PERF_AUX_FLAG_PARTIAL ? "P" : "");
1432}
1433
1434size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp)
1435{
1436 return fprintf(fp, " pid: %u tid: %u\n",
1437 event->itrace_start.pid, event->itrace_start.tid);
1438}
1439
1440size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp)
1441{
1442 bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
1443 const char *in_out = !out ? "IN " :
1444 !(event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT) ?
1445 "OUT " : "OUT preempt";
1446
1447 if (event->header.type == PERF_RECORD_SWITCH)
1448 return fprintf(fp, " %s\n", in_out);
1449
1450 return fprintf(fp, " %s %s pid/tid: %5u/%-5u\n",
1451 in_out, out ? "next" : "prev",
1452 event->context_switch.next_prev_pid,
1453 event->context_switch.next_prev_tid);
1454}
1455
1456static size_t perf_event__fprintf_lost(union perf_event *event, FILE *fp)
1457{
1458 return fprintf(fp, " lost %" PRIu64 "\n", event->lost.lost);
1459}
1460
1461size_t perf_event__fprintf(union perf_event *event, FILE *fp)
1462{
1463 size_t ret = fprintf(fp, "PERF_RECORD_%s",
1464 perf_event__name(event->header.type));
1465
1466 switch (event->header.type) {
1467 case PERF_RECORD_COMM:
1468 ret += perf_event__fprintf_comm(event, fp);
1469 break;
1470 case PERF_RECORD_FORK:
1471 case PERF_RECORD_EXIT:
1472 ret += perf_event__fprintf_task(event, fp);
1473 break;
1474 case PERF_RECORD_MMAP:
1475 ret += perf_event__fprintf_mmap(event, fp);
1476 break;
1477 case PERF_RECORD_NAMESPACES:
1478 ret += perf_event__fprintf_namespaces(event, fp);
1479 break;
1480 case PERF_RECORD_MMAP2:
1481 ret += perf_event__fprintf_mmap2(event, fp);
1482 break;
1483 case PERF_RECORD_AUX:
1484 ret += perf_event__fprintf_aux(event, fp);
1485 break;
1486 case PERF_RECORD_ITRACE_START:
1487 ret += perf_event__fprintf_itrace_start(event, fp);
1488 break;
1489 case PERF_RECORD_SWITCH:
1490 case PERF_RECORD_SWITCH_CPU_WIDE:
1491 ret += perf_event__fprintf_switch(event, fp);
1492 break;
1493 case PERF_RECORD_LOST:
1494 ret += perf_event__fprintf_lost(event, fp);
1495 break;
1496 default:
1497 ret += fprintf(fp, "\n");
1498 }
1499
1500 return ret;
1501}
1502
1503int perf_event__process(struct perf_tool *tool __maybe_unused,
1504 union perf_event *event,
1505 struct perf_sample *sample,
1506 struct machine *machine)
1507{
1508 return machine__process_event(machine, event, sample);
1509}
1510
1511struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr,
1512 struct addr_location *al)
1513{
1514 struct map_groups *mg = thread->mg;
1515 struct machine *machine = mg->machine;
1516 bool load_map = false;
1517
1518 al->machine = machine;
1519 al->thread = thread;
1520 al->addr = addr;
1521 al->cpumode = cpumode;
1522 al->filtered = 0;
1523
1524 if (machine == NULL) {
1525 al->map = NULL;
1526 return NULL;
1527 }
1528
1529 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
1530 al->level = 'k';
1531 mg = &machine->kmaps;
1532 load_map = true;
1533 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
1534 al->level = '.';
1535 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
1536 al->level = 'g';
1537 mg = &machine->kmaps;
1538 load_map = true;
1539 } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) {
1540 al->level = 'u';
1541 } else {
1542 al->level = 'H';
1543 al->map = NULL;
1544
1545 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
1546 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
1547 !perf_guest)
1548 al->filtered |= (1 << HIST_FILTER__GUEST);
1549 if ((cpumode == PERF_RECORD_MISC_USER ||
1550 cpumode == PERF_RECORD_MISC_KERNEL) &&
1551 !perf_host)
1552 al->filtered |= (1 << HIST_FILTER__HOST);
1553
1554 return NULL;
1555 }
1556try_again:
1557 al->map = map_groups__find(mg, al->addr);
1558 if (al->map == NULL) {
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568 if (cpumode == PERF_RECORD_MISC_USER && machine &&
1569 mg != &machine->kmaps &&
1570 machine__kernel_ip(machine, al->addr)) {
1571 mg = &machine->kmaps;
1572 load_map = true;
1573 goto try_again;
1574 }
1575 } else {
1576
1577
1578
1579
1580 if (load_map)
1581 map__load(al->map);
1582 al->addr = al->map->map_ip(al->map, al->addr);
1583 }
1584
1585 return al->map;
1586}
1587
1588struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode,
1589 u64 addr, struct addr_location *al)
1590{
1591 al->sym = NULL;
1592 if (thread__find_map(thread, cpumode, addr, al))
1593 al->sym = map__find_symbol(al->map, al->addr);
1594 return al->sym;
1595}
1596
1597
1598
1599
1600
1601int machine__resolve(struct machine *machine, struct addr_location *al,
1602 struct perf_sample *sample)
1603{
1604 struct thread *thread = machine__findnew_thread(machine, sample->pid,
1605 sample->tid);
1606
1607 if (thread == NULL)
1608 return -1;
1609
1610 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
1611 thread__find_map(thread, sample->cpumode, sample->ip, al);
1612 dump_printf(" ...... dso: %s\n",
1613 al->map ? al->map->dso->long_name :
1614 al->level == 'H' ? "[hypervisor]" : "<not found>");
1615
1616 if (thread__is_filtered(thread))
1617 al->filtered |= (1 << HIST_FILTER__THREAD);
1618
1619 al->sym = NULL;
1620 al->cpu = sample->cpu;
1621 al->socket = -1;
1622 al->srcline = NULL;
1623
1624 if (al->cpu >= 0) {
1625 struct perf_env *env = machine->env;
1626
1627 if (env && env->cpu)
1628 al->socket = env->cpu[al->cpu].socket_id;
1629 }
1630
1631 if (al->map) {
1632 struct dso *dso = al->map->dso;
1633
1634 if (symbol_conf.dso_list &&
1635 (!dso || !(strlist__has_entry(symbol_conf.dso_list,
1636 dso->short_name) ||
1637 (dso->short_name != dso->long_name &&
1638 strlist__has_entry(symbol_conf.dso_list,
1639 dso->long_name))))) {
1640 al->filtered |= (1 << HIST_FILTER__DSO);
1641 }
1642
1643 al->sym = map__find_symbol(al->map, al->addr);
1644 }
1645
1646 if (symbol_conf.sym_list &&
1647 (!al->sym || !strlist__has_entry(symbol_conf.sym_list,
1648 al->sym->name))) {
1649 al->filtered |= (1 << HIST_FILTER__SYMBOL);
1650 }
1651
1652 return 0;
1653}
1654
1655
1656
1657
1658
1659
1660
1661void addr_location__put(struct addr_location *al)
1662{
1663 thread__zput(al->thread);
1664}
1665
1666bool is_bts_event(struct perf_event_attr *attr)
1667{
1668 return attr->type == PERF_TYPE_HARDWARE &&
1669 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
1670 attr->sample_period == 1;
1671}
1672
1673bool sample_addr_correlates_sym(struct perf_event_attr *attr)
1674{
1675 if (attr->type == PERF_TYPE_SOFTWARE &&
1676 (attr->config == PERF_COUNT_SW_PAGE_FAULTS ||
1677 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
1678 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ))
1679 return true;
1680
1681 if (is_bts_event(attr))
1682 return true;
1683
1684 return false;
1685}
1686
1687void thread__resolve(struct thread *thread, struct addr_location *al,
1688 struct perf_sample *sample)
1689{
1690 thread__find_map(thread, sample->cpumode, sample->addr, al);
1691
1692 al->cpu = sample->cpu;
1693 al->sym = NULL;
1694
1695 if (al->map)
1696 al->sym = map__find_symbol(al->map, al->addr);
1697}
1698
