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1#include <linux/types.h>
2#include <sys/mman.h>
3#include "event.h"
4#include "debug.h"
5#include "hist.h"
6#include "machine.h"
7#include "sort.h"
8#include "string.h"
9#include "strlist.h"
10#include "thread.h"
11#include "thread_map.h"
12#include "symbol/kallsyms.h"
13#include "asm/bug.h"
14#include "stat.h"
15
16static const char *perf_event__names[] = {
17 [0] = "TOTAL",
18 [PERF_RECORD_MMAP] = "MMAP",
19 [PERF_RECORD_MMAP2] = "MMAP2",
20 [PERF_RECORD_LOST] = "LOST",
21 [PERF_RECORD_COMM] = "COMM",
22 [PERF_RECORD_EXIT] = "EXIT",
23 [PERF_RECORD_THROTTLE] = "THROTTLE",
24 [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE",
25 [PERF_RECORD_FORK] = "FORK",
26 [PERF_RECORD_READ] = "READ",
27 [PERF_RECORD_SAMPLE] = "SAMPLE",
28 [PERF_RECORD_AUX] = "AUX",
29 [PERF_RECORD_ITRACE_START] = "ITRACE_START",
30 [PERF_RECORD_LOST_SAMPLES] = "LOST_SAMPLES",
31 [PERF_RECORD_SWITCH] = "SWITCH",
32 [PERF_RECORD_SWITCH_CPU_WIDE] = "SWITCH_CPU_WIDE",
33 [PERF_RECORD_HEADER_ATTR] = "ATTR",
34 [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE",
35 [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA",
36 [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID",
37 [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND",
38 [PERF_RECORD_ID_INDEX] = "ID_INDEX",
39 [PERF_RECORD_AUXTRACE_INFO] = "AUXTRACE_INFO",
40 [PERF_RECORD_AUXTRACE] = "AUXTRACE",
41 [PERF_RECORD_AUXTRACE_ERROR] = "AUXTRACE_ERROR",
42 [PERF_RECORD_THREAD_MAP] = "THREAD_MAP",
43 [PERF_RECORD_CPU_MAP] = "CPU_MAP",
44 [PERF_RECORD_STAT_CONFIG] = "STAT_CONFIG",
45 [PERF_RECORD_STAT] = "STAT",
46 [PERF_RECORD_STAT_ROUND] = "STAT_ROUND",
47 [PERF_RECORD_EVENT_UPDATE] = "EVENT_UPDATE",
48};
49
50const char *perf_event__name(unsigned int id)
51{
52 if (id >= ARRAY_SIZE(perf_event__names))
53 return "INVALID";
54 if (!perf_event__names[id])
55 return "UNKNOWN";
56 return perf_event__names[id];
57}
58
59static int perf_tool__process_synth_event(struct perf_tool *tool,
60 union perf_event *event,
61 struct machine *machine,
62 perf_event__handler_t process)
63{
64 struct perf_sample synth_sample = {
65 .pid = -1,
66 .tid = -1,
67 .time = -1,
68 .stream_id = -1,
69 .cpu = -1,
70 .period = 1,
71 .cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK,
72 };
73
74 return process(tool, event, &synth_sample, machine);
75};
76
77/*
78 * Assumes that the first 4095 bytes of /proc/pid/stat contains
79 * the comm, tgid and ppid.
80 */
81static int perf_event__get_comm_ids(pid_t pid, char *comm, size_t len,
82 pid_t *tgid, pid_t *ppid)
83{
84 char filename[PATH_MAX];
85 char bf[4096];
86 int fd;
87 size_t size = 0;
88 ssize_t n;
89 char *nl, *name, *tgids, *ppids;
90
91 *tgid = -1;
92 *ppid = -1;
93
94 snprintf(filename, sizeof(filename), "/proc/%d/status", pid);
95
96 fd = open(filename, O_RDONLY);
97 if (fd < 0) {
98 pr_debug("couldn't open %s\n", filename);
99 return -1;
100 }
101
102 n = read(fd, bf, sizeof(bf) - 1);
103 close(fd);
104 if (n <= 0) {
105 pr_warning("Couldn't get COMM, tigd and ppid for pid %d\n",
106 pid);
107 return -1;
108 }
109 bf[n] = '\0';
110
111 name = strstr(bf, "Name:");
112 tgids = strstr(bf, "Tgid:");
113 ppids = strstr(bf, "PPid:");
114
115 if (name) {
116 name += 5; /* strlen("Name:") */
117
118 while (*name && isspace(*name))
119 ++name;
120
121 nl = strchr(name, '\n');
122 if (nl)
123 *nl = '\0';
124
125 size = strlen(name);
126 if (size >= len)
127 size = len - 1;
128 memcpy(comm, name, size);
129 comm[size] = '\0';
130 } else {
131 pr_debug("Name: string not found for pid %d\n", pid);
132 }
133
134 if (tgids) {
135 tgids += 5; /* strlen("Tgid:") */
136 *tgid = atoi(tgids);
137 } else {
138 pr_debug("Tgid: string not found for pid %d\n", pid);
139 }
140
141 if (ppids) {
142 ppids += 5; /* strlen("PPid:") */
143 *ppid = atoi(ppids);
144 } else {
145 pr_debug("PPid: string not found for pid %d\n", pid);
146 }
147
148 return 0;
149}
150
151static int perf_event__prepare_comm(union perf_event *event, pid_t pid,
152 struct machine *machine,
153 pid_t *tgid, pid_t *ppid)
154{
155 size_t size;
156
157 *ppid = -1;
158
159 memset(&event->comm, 0, sizeof(event->comm));
160
161 if (machine__is_host(machine)) {
162 if (perf_event__get_comm_ids(pid, event->comm.comm,
163 sizeof(event->comm.comm),
164 tgid, ppid) != 0) {
165 return -1;
166 }
167 } else {
168 *tgid = machine->pid;
169 }
170
171 if (*tgid < 0)
172 return -1;
173
174 event->comm.pid = *tgid;
175 event->comm.header.type = PERF_RECORD_COMM;
176
177 size = strlen(event->comm.comm) + 1;
178 size = PERF_ALIGN(size, sizeof(u64));
179 memset(event->comm.comm + size, 0, machine->id_hdr_size);
180 event->comm.header.size = (sizeof(event->comm) -
181 (sizeof(event->comm.comm) - size) +
182 machine->id_hdr_size);
183 event->comm.tid = pid;
184
185 return 0;
186}
187
188pid_t perf_event__synthesize_comm(struct perf_tool *tool,
189 union perf_event *event, pid_t pid,
190 perf_event__handler_t process,
191 struct machine *machine)
192{
193 pid_t tgid, ppid;
194
195 if (perf_event__prepare_comm(event, pid, machine, &tgid, &ppid) != 0)
196 return -1;
197
198 if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
199 return -1;
200
201 return tgid;
202}
203
204static int perf_event__synthesize_fork(struct perf_tool *tool,
205 union perf_event *event,
206 pid_t pid, pid_t tgid, pid_t ppid,
207 perf_event__handler_t process,
208 struct machine *machine)
209{
210 memset(&event->fork, 0, sizeof(event->fork) + machine->id_hdr_size);
211
212 /*
213 * for main thread set parent to ppid from status file. For other
214 * threads set parent pid to main thread. ie., assume main thread
215 * spawns all threads in a process
216 */
217 if (tgid == pid) {
218 event->fork.ppid = ppid;
219 event->fork.ptid = ppid;
220 } else {
221 event->fork.ppid = tgid;
222 event->fork.ptid = tgid;
223 }
224 event->fork.pid = tgid;
225 event->fork.tid = pid;
226 event->fork.header.type = PERF_RECORD_FORK;
227
228 event->fork.header.size = (sizeof(event->fork) + machine->id_hdr_size);
229
230 if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
231 return -1;
232
233 return 0;
234}
235
236int perf_event__synthesize_mmap_events(struct perf_tool *tool,
237 union perf_event *event,
238 pid_t pid, pid_t tgid,
239 perf_event__handler_t process,
240 struct machine *machine,
241 bool mmap_data,
242 unsigned int proc_map_timeout)
243{
244 char filename[PATH_MAX];
245 FILE *fp;
246 unsigned long long t;
247 bool truncation = false;
248 unsigned long long timeout = proc_map_timeout * 1000000ULL;
249 int rc = 0;
250
251 if (machine__is_default_guest(machine))
252 return 0;
253
254 snprintf(filename, sizeof(filename), "%s/proc/%d/maps",
255 machine->root_dir, pid);
256
257 fp = fopen(filename, "r");
258 if (fp == NULL) {
259 /*
260 * We raced with a task exiting - just return:
261 */
262 pr_debug("couldn't open %s\n", filename);
263 return -1;
264 }
265
266 event->header.type = PERF_RECORD_MMAP2;
267 t = rdclock();
268
269 while (1) {
270 char bf[BUFSIZ];
271 char prot[5];
272 char execname[PATH_MAX];
273 char anonstr[] = "//anon";
274 unsigned int ino;
275 size_t size;
276 ssize_t n;
277
278 if (fgets(bf, sizeof(bf), fp) == NULL)
279 break;
280
281 if ((rdclock() - t) > timeout) {
282 pr_warning("Reading %s time out. "
283 "You may want to increase "
284 "the time limit by --proc-map-timeout\n",
285 filename);
286 truncation = true;
287 goto out;
288 }
289
290 /* ensure null termination since stack will be reused. */
291 strcpy(execname, "");
292
293 /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */
294 n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %x:%x %u %[^\n]\n",
295 &event->mmap2.start, &event->mmap2.len, prot,
296 &event->mmap2.pgoff, &event->mmap2.maj,
297 &event->mmap2.min,
298 &ino, execname);
299
300 /*
301 * Anon maps don't have the execname.
302 */
303 if (n < 7)
304 continue;
305
306 event->mmap2.ino = (u64)ino;
307
308 /*
309 * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c
310 */
311 if (machine__is_host(machine))
312 event->header.misc = PERF_RECORD_MISC_USER;
313 else
314 event->header.misc = PERF_RECORD_MISC_GUEST_USER;
315
316 /* map protection and flags bits */
317 event->mmap2.prot = 0;
318 event->mmap2.flags = 0;
319 if (prot[0] == 'r')
320 event->mmap2.prot |= PROT_READ;
321 if (prot[1] == 'w')
322 event->mmap2.prot |= PROT_WRITE;
323 if (prot[2] == 'x')
324 event->mmap2.prot |= PROT_EXEC;
325
326 if (prot[3] == 's')
327 event->mmap2.flags |= MAP_SHARED;
328 else
329 event->mmap2.flags |= MAP_PRIVATE;
330
331 if (prot[2] != 'x') {
332 if (!mmap_data || prot[0] != 'r')
333 continue;
334
335 event->header.misc |= PERF_RECORD_MISC_MMAP_DATA;
336 }
337
338out:
339 if (truncation)
340 event->header.misc |= PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT;
341
342 if (!strcmp(execname, ""))
343 strcpy(execname, anonstr);
344
345 size = strlen(execname) + 1;
346 memcpy(event->mmap2.filename, execname, size);
347 size = PERF_ALIGN(size, sizeof(u64));
348 event->mmap2.len -= event->mmap.start;
349 event->mmap2.header.size = (sizeof(event->mmap2) -
350 (sizeof(event->mmap2.filename) - size));
351 memset(event->mmap2.filename + size, 0, machine->id_hdr_size);
352 event->mmap2.header.size += machine->id_hdr_size;
353 event->mmap2.pid = tgid;
354 event->mmap2.tid = pid;
355
356 if (perf_tool__process_synth_event(tool, event, machine, process) != 0) {
357 rc = -1;
358 break;
359 }
360
361 if (truncation)
362 break;
363 }
364
365 fclose(fp);
366 return rc;
367}
368
369int perf_event__synthesize_modules(struct perf_tool *tool,
370 perf_event__handler_t process,
371 struct machine *machine)
372{
373 int rc = 0;
374 struct map *pos;
375 struct map_groups *kmaps = &machine->kmaps;
376 struct maps *maps = &kmaps->maps[MAP__FUNCTION];
377 union perf_event *event = zalloc((sizeof(event->mmap) +
378 machine->id_hdr_size));
379 if (event == NULL) {
380 pr_debug("Not enough memory synthesizing mmap event "
381 "for kernel modules\n");
382 return -1;
383 }
384
385 event->header.type = PERF_RECORD_MMAP;
386
387 /*
388 * kernel uses 0 for user space maps, see kernel/perf_event.c
389 * __perf_event_mmap
390 */
391 if (machine__is_host(machine))
392 event->header.misc = PERF_RECORD_MISC_KERNEL;
393 else
394 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
395
396 for (pos = maps__first(maps); pos; pos = map__next(pos)) {
397 size_t size;
398
399 if (__map__is_kernel(pos))
400 continue;
401
402 size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
403 event->mmap.header.type = PERF_RECORD_MMAP;
404 event->mmap.header.size = (sizeof(event->mmap) -
405 (sizeof(event->mmap.filename) - size));
406 memset(event->mmap.filename + size, 0, machine->id_hdr_size);
407 event->mmap.header.size += machine->id_hdr_size;
408 event->mmap.start = pos->start;
409 event->mmap.len = pos->end - pos->start;
410 event->mmap.pid = machine->pid;
411
412 memcpy(event->mmap.filename, pos->dso->long_name,
413 pos->dso->long_name_len + 1);
414 if (perf_tool__process_synth_event(tool, event, machine, process) != 0) {
415 rc = -1;
416 break;
417 }
418 }
419
420 free(event);
421 return rc;
422}
423
424static int __event__synthesize_thread(union perf_event *comm_event,
425 union perf_event *mmap_event,
426 union perf_event *fork_event,
427 pid_t pid, int full,
428 perf_event__handler_t process,
429 struct perf_tool *tool,
430 struct machine *machine,
431 bool mmap_data,
432 unsigned int proc_map_timeout)
433{
434 char filename[PATH_MAX];
435 DIR *tasks;
436 struct dirent *dirent;
437 pid_t tgid, ppid;
438 int rc = 0;
439
440 /* special case: only send one comm event using passed in pid */
441 if (!full) {
442 tgid = perf_event__synthesize_comm(tool, comm_event, pid,
443 process, machine);
444
445 if (tgid == -1)
446 return -1;
447
448 return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
449 process, machine, mmap_data,
450 proc_map_timeout);
451 }
452
453 if (machine__is_default_guest(machine))
454 return 0;
455
456 snprintf(filename, sizeof(filename), "%s/proc/%d/task",
457 machine->root_dir, pid);
458
459 tasks = opendir(filename);
460 if (tasks == NULL) {
461 pr_debug("couldn't open %s\n", filename);
462 return 0;
463 }
464
465 while ((dirent = readdir(tasks)) != NULL) {
466 char *end;
467 pid_t _pid;
468
469 _pid = strtol(dirent->d_name, &end, 10);
470 if (*end)
471 continue;
472
473 rc = -1;
474 if (perf_event__prepare_comm(comm_event, _pid, machine,
475 &tgid, &ppid) != 0)
476 break;
477
478 if (perf_event__synthesize_fork(tool, fork_event, _pid, tgid,
479 ppid, process, machine) < 0)
480 break;
481 /*
482 * Send the prepared comm event
483 */
484 if (perf_tool__process_synth_event(tool, comm_event, machine, process) != 0)
485 break;
486
487 rc = 0;
488 if (_pid == pid) {
489 /* process the parent's maps too */
490 rc = perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
491 process, machine, mmap_data, proc_map_timeout);
492 if (rc)
493 break;
494 }
495 }
496
497 closedir(tasks);
498 return rc;
499}
500
501int perf_event__synthesize_thread_map(struct perf_tool *tool,
502 struct thread_map *threads,
503 perf_event__handler_t process,
504 struct machine *machine,
505 bool mmap_data,
506 unsigned int proc_map_timeout)
507{
508 union perf_event *comm_event, *mmap_event, *fork_event;
509 int err = -1, thread, j;
510
511 comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
512 if (comm_event == NULL)
513 goto out;
514
515 mmap_event = malloc(sizeof(mmap_event->mmap2) + machine->id_hdr_size);
516 if (mmap_event == NULL)
517 goto out_free_comm;
518
519 fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
520 if (fork_event == NULL)
521 goto out_free_mmap;
522
523 err = 0;
524 for (thread = 0; thread < threads->nr; ++thread) {
525 if (__event__synthesize_thread(comm_event, mmap_event,
526 fork_event,
527 thread_map__pid(threads, thread), 0,
528 process, tool, machine,
529 mmap_data, proc_map_timeout)) {
530 err = -1;
531 break;
532 }
533
534 /*
535 * comm.pid is set to thread group id by
536 * perf_event__synthesize_comm
537 */
538 if ((int) comm_event->comm.pid != thread_map__pid(threads, thread)) {
539 bool need_leader = true;
540
541 /* is thread group leader in thread_map? */
542 for (j = 0; j < threads->nr; ++j) {
543 if ((int) comm_event->comm.pid == thread_map__pid(threads, j)) {
544 need_leader = false;
545 break;
546 }
547 }
548
549 /* if not, generate events for it */
550 if (need_leader &&
551 __event__synthesize_thread(comm_event, mmap_event,
552 fork_event,
553 comm_event->comm.pid, 0,
554 process, tool, machine,
555 mmap_data, proc_map_timeout)) {
556 err = -1;
557 break;
558 }
559 }
560 }
561 free(fork_event);
562out_free_mmap:
563 free(mmap_event);
564out_free_comm:
565 free(comm_event);
566out:
567 return err;
568}
569
570int perf_event__synthesize_threads(struct perf_tool *tool,
571 perf_event__handler_t process,
572 struct machine *machine,
573 bool mmap_data,
574 unsigned int proc_map_timeout)
575{
576 DIR *proc;
577 char proc_path[PATH_MAX];
578 struct dirent *dirent;
579 union perf_event *comm_event, *mmap_event, *fork_event;
580 int err = -1;
581
582 if (machine__is_default_guest(machine))
583 return 0;
584
585 comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
586 if (comm_event == NULL)
587 goto out;
588
589 mmap_event = malloc(sizeof(mmap_event->mmap2) + machine->id_hdr_size);
590 if (mmap_event == NULL)
591 goto out_free_comm;
592
593 fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
594 if (fork_event == NULL)
595 goto out_free_mmap;
596
597 snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir);
598 proc = opendir(proc_path);
599
600 if (proc == NULL)
601 goto out_free_fork;
602
603 while ((dirent = readdir(proc)) != NULL) {
604 char *end;
605 pid_t pid = strtol(dirent->d_name, &end, 10);
606
607 if (*end) /* only interested in proper numerical dirents */
608 continue;
609 /*
610 * We may race with exiting thread, so don't stop just because
611 * one thread couldn't be synthesized.
612 */
613 __event__synthesize_thread(comm_event, mmap_event, fork_event, pid,
614 1, process, tool, machine, mmap_data,
615 proc_map_timeout);
616 }
617
618 err = 0;
619 closedir(proc);
620out_free_fork:
621 free(fork_event);
622out_free_mmap:
623 free(mmap_event);
624out_free_comm:
625 free(comm_event);
626out:
627 return err;
628}
629
630struct process_symbol_args {
631 const char *name;
632 u64 start;
633};
634
635static int find_symbol_cb(void *arg, const char *name, char type,
636 u64 start)
637{
638 struct process_symbol_args *args = arg;
639
640 /*
641 * Must be a function or at least an alias, as in PARISC64, where "_text" is
642 * an 'A' to the same address as "_stext".
643 */
644 if (!(symbol_type__is_a(type, MAP__FUNCTION) ||
645 type == 'A') || strcmp(name, args->name))
646 return 0;
647
648 args->start = start;
649 return 1;
650}
651
652u64 kallsyms__get_function_start(const char *kallsyms_filename,
653 const char *symbol_name)
654{
655 struct process_symbol_args args = { .name = symbol_name, };
656
657 if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0)
658 return 0;
659
660 return args.start;
661}
662
663int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
664 perf_event__handler_t process,
665 struct machine *machine)
666{
667 size_t size;
668 const char *mmap_name;
669 char name_buff[PATH_MAX];
670 struct map *map = machine__kernel_map(machine);
671 struct kmap *kmap;
672 int err;
673 union perf_event *event;
674
675 if (map == NULL)
676 return -1;
677
678 /*
679 * We should get this from /sys/kernel/sections/.text, but till that is
680 * available use this, and after it is use this as a fallback for older
681 * kernels.
682 */
683 event = zalloc((sizeof(event->mmap) + machine->id_hdr_size));
684 if (event == NULL) {
685 pr_debug("Not enough memory synthesizing mmap event "
686 "for kernel modules\n");
687 return -1;
688 }
689
690 mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff));
691 if (machine__is_host(machine)) {
692 /*
693 * kernel uses PERF_RECORD_MISC_USER for user space maps,
694 * see kernel/perf_event.c __perf_event_mmap
695 */
696 event->header.misc = PERF_RECORD_MISC_KERNEL;
697 } else {
698 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
699 }
700
701 kmap = map__kmap(map);
702 size = snprintf(event->mmap.filename, sizeof(event->mmap.filename),
703 "%s%s", mmap_name, kmap->ref_reloc_sym->name) + 1;
704 size = PERF_ALIGN(size, sizeof(u64));
705 event->mmap.header.type = PERF_RECORD_MMAP;
706 event->mmap.header.size = (sizeof(event->mmap) -
707 (sizeof(event->mmap.filename) - size) + machine->id_hdr_size);
708 event->mmap.pgoff = kmap->ref_reloc_sym->addr;
709 event->mmap.start = map->start;
710 event->mmap.len = map->end - event->mmap.start;
711 event->mmap.pid = machine->pid;
712
713 err = perf_tool__process_synth_event(tool, event, machine, process);
714 free(event);
715
716 return err;
717}
718
719int perf_event__synthesize_thread_map2(struct perf_tool *tool,
720 struct thread_map *threads,
721 perf_event__handler_t process,
722 struct machine *machine)
723{
724 union perf_event *event;
725 int i, err, size;
726
727 size = sizeof(event->thread_map);
728 size += threads->nr * sizeof(event->thread_map.entries[0]);
729
730 event = zalloc(size);
731 if (!event)
732 return -ENOMEM;
733
734 event->header.type = PERF_RECORD_THREAD_MAP;
735 event->header.size = size;
736 event->thread_map.nr = threads->nr;
737
738 for (i = 0; i < threads->nr; i++) {
739 struct thread_map_event_entry *entry = &event->thread_map.entries[i];
740 char *comm = thread_map__comm(threads, i);
741
742 if (!comm)
743 comm = (char *) "";
744
745 entry->pid = thread_map__pid(threads, i);
746 strncpy((char *) &entry->comm, comm, sizeof(entry->comm));
747 }
748
749 err = process(tool, event, NULL, machine);
750
751 free(event);
752 return err;
753}
754
755static void synthesize_cpus(struct cpu_map_entries *cpus,
756 struct cpu_map *map)
757{
758 int i;
759
760 cpus->nr = map->nr;
761
762 for (i = 0; i < map->nr; i++)
763 cpus->cpu[i] = map->map[i];
764}
765
766static void synthesize_mask(struct cpu_map_mask *mask,
767 struct cpu_map *map, int max)
768{
769 int i;
770
771 mask->nr = BITS_TO_LONGS(max);
772 mask->long_size = sizeof(long);
773
774 for (i = 0; i < map->nr; i++)
775 set_bit(map->map[i], mask->mask);
776}
777
778static size_t cpus_size(struct cpu_map *map)
779{
780 return sizeof(struct cpu_map_entries) + map->nr * sizeof(u16);
781}
782
783static size_t mask_size(struct cpu_map *map, int *max)
784{
785 int i;
786
787 *max = 0;
788
789 for (i = 0; i < map->nr; i++) {
790 /* bit possition of the cpu is + 1 */
791 int bit = map->map[i] + 1;
792
793 if (bit > *max)
794 *max = bit;
795 }
796
797 return sizeof(struct cpu_map_mask) + BITS_TO_LONGS(*max) * sizeof(long);
798}
799
800void *cpu_map_data__alloc(struct cpu_map *map, size_t *size, u16 *type, int *max)
801{
802 size_t size_cpus, size_mask;
803 bool is_dummy = cpu_map__empty(map);
804
805 /*
806 * Both array and mask data have variable size based
807 * on the number of cpus and their actual values.
808 * The size of the 'struct cpu_map_data' is:
809 *
810 * array = size of 'struct cpu_map_entries' +
811 * number of cpus * sizeof(u64)
812 *
813 * mask = size of 'struct cpu_map_mask' +
814 * maximum cpu bit converted to size of longs
815 *
816 * and finaly + the size of 'struct cpu_map_data'.
817 */
818 size_cpus = cpus_size(map);
819 size_mask = mask_size(map, max);
820
821 if (is_dummy || (size_cpus < size_mask)) {
822 *size += size_cpus;
823 *type = PERF_CPU_MAP__CPUS;
824 } else {
825 *size += size_mask;
826 *type = PERF_CPU_MAP__MASK;
827 }
828
829 *size += sizeof(struct cpu_map_data);
830 return zalloc(*size);
831}
832
833void cpu_map_data__synthesize(struct cpu_map_data *data, struct cpu_map *map,
834 u16 type, int max)
835{
836 data->type = type;
837
838 switch (type) {
839 case PERF_CPU_MAP__CPUS:
840 synthesize_cpus((struct cpu_map_entries *) data->data, map);
841 break;
842 case PERF_CPU_MAP__MASK:
843 synthesize_mask((struct cpu_map_mask *) data->data, map, max);
844 default:
845 break;
846 };
847}
848
849static struct cpu_map_event* cpu_map_event__new(struct cpu_map *map)
850{
851 size_t size = sizeof(struct cpu_map_event);
852 struct cpu_map_event *event;
853 int max;
854 u16 type;
855
856 event = cpu_map_data__alloc(map, &size, &type, &max);
857 if (!event)
858 return NULL;
859
860 event->header.type = PERF_RECORD_CPU_MAP;
861 event->header.size = size;
862 event->data.type = type;
863
864 cpu_map_data__synthesize(&event->data, map, type, max);
865 return event;
866}
867
868int perf_event__synthesize_cpu_map(struct perf_tool *tool,
869 struct cpu_map *map,
870 perf_event__handler_t process,
871 struct machine *machine)
872{
873 struct cpu_map_event *event;
874 int err;
875
876 event = cpu_map_event__new(map);
877 if (!event)
878 return -ENOMEM;
879
880 err = process(tool, (union perf_event *) event, NULL, machine);
881
882 free(event);
883 return err;
884}
885
886int perf_event__synthesize_stat_config(struct perf_tool *tool,
887 struct perf_stat_config *config,
888 perf_event__handler_t process,
889 struct machine *machine)
890{
891 struct stat_config_event *event;
892 int size, i = 0, err;
893
894 size = sizeof(*event);
895 size += (PERF_STAT_CONFIG_TERM__MAX * sizeof(event->data[0]));
896
897 event = zalloc(size);
898 if (!event)
899 return -ENOMEM;
900
901 event->header.type = PERF_RECORD_STAT_CONFIG;
902 event->header.size = size;
903 event->nr = PERF_STAT_CONFIG_TERM__MAX;
904
905#define ADD(__term, __val) \
906 event->data[i].tag = PERF_STAT_CONFIG_TERM__##__term; \
907 event->data[i].val = __val; \
908 i++;
909
910 ADD(AGGR_MODE, config->aggr_mode)
911 ADD(INTERVAL, config->interval)
912 ADD(SCALE, config->scale)
913
914 WARN_ONCE(i != PERF_STAT_CONFIG_TERM__MAX,
915 "stat config terms unbalanced\n");
916#undef ADD
917
918 err = process(tool, (union perf_event *) event, NULL, machine);
919
920 free(event);
921 return err;
922}
923
924int perf_event__synthesize_stat(struct perf_tool *tool,
925 u32 cpu, u32 thread, u64 id,
926 struct perf_counts_values *count,
927 perf_event__handler_t process,
928 struct machine *machine)
929{
930 struct stat_event event;
931
932 event.header.type = PERF_RECORD_STAT;
933 event.header.size = sizeof(event);
934 event.header.misc = 0;
935
936 event.id = id;
937 event.cpu = cpu;
938 event.thread = thread;
939 event.val = count->val;
940 event.ena = count->ena;
941 event.run = count->run;
942
943 return process(tool, (union perf_event *) &event, NULL, machine);
944}
945
946int perf_event__synthesize_stat_round(struct perf_tool *tool,
947 u64 evtime, u64 type,
948 perf_event__handler_t process,
949 struct machine *machine)
950{
951 struct stat_round_event event;
952
953 event.header.type = PERF_RECORD_STAT_ROUND;
954 event.header.size = sizeof(event);
955 event.header.misc = 0;
956
957 event.time = evtime;
958 event.type = type;
959
960 return process(tool, (union perf_event *) &event, NULL, machine);
961}
962
963void perf_event__read_stat_config(struct perf_stat_config *config,
964 struct stat_config_event *event)
965{
966 unsigned i;
967
968 for (i = 0; i < event->nr; i++) {
969
970 switch (event->data[i].tag) {
971#define CASE(__term, __val) \
972 case PERF_STAT_CONFIG_TERM__##__term: \
973 config->__val = event->data[i].val; \
974 break;
975
976 CASE(AGGR_MODE, aggr_mode)
977 CASE(SCALE, scale)
978 CASE(INTERVAL, interval)
979#undef CASE
980 default:
981 pr_warning("unknown stat config term %" PRIu64 "\n",
982 event->data[i].tag);
983 }
984 }
985}
986
987size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
988{
989 const char *s;
990
991 if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC)
992 s = " exec";
993 else
994 s = "";
995
996 return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid);
997}
998
999int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
1000 union perf_event *event,
1001 struct perf_sample *sample,
1002 struct machine *machine)
1003{
1004 return machine__process_comm_event(machine, event, sample);
1005}
1006
1007int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
1008 union perf_event *event,
1009 struct perf_sample *sample,
1010 struct machine *machine)
1011{
1012 return machine__process_lost_event(machine, event, sample);
1013}
1014
1015int perf_event__process_aux(struct perf_tool *tool __maybe_unused,
1016 union perf_event *event,
1017 struct perf_sample *sample __maybe_unused,
1018 struct machine *machine)
1019{
1020 return machine__process_aux_event(machine, event);
1021}
1022
1023int perf_event__process_itrace_start(struct perf_tool *tool __maybe_unused,
1024 union perf_event *event,
1025 struct perf_sample *sample __maybe_unused,
1026 struct machine *machine)
1027{
1028 return machine__process_itrace_start_event(machine, event);
1029}
1030
1031int perf_event__process_lost_samples(struct perf_tool *tool __maybe_unused,
1032 union perf_event *event,
1033 struct perf_sample *sample,
1034 struct machine *machine)
1035{
1036 return machine__process_lost_samples_event(machine, event, sample);
1037}
1038
1039int perf_event__process_switch(struct perf_tool *tool __maybe_unused,
1040 union perf_event *event,
1041 struct perf_sample *sample __maybe_unused,
1042 struct machine *machine)
1043{
1044 return machine__process_switch_event(machine, event);
1045}
1046
1047size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
1048{
1049 return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %c %s\n",
1050 event->mmap.pid, event->mmap.tid, event->mmap.start,
1051 event->mmap.len, event->mmap.pgoff,
1052 (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
1053 event->mmap.filename);
1054}
1055
1056size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
1057{
1058 return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64
1059 " %02x:%02x %"PRIu64" %"PRIu64"]: %c%c%c%c %s\n",
1060 event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
1061 event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj,
1062 event->mmap2.min, event->mmap2.ino,
1063 event->mmap2.ino_generation,
1064 (event->mmap2.prot & PROT_READ) ? 'r' : '-',
1065 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
1066 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
1067 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
1068 event->mmap2.filename);
1069}
1070
1071size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp)
1072{
1073 struct thread_map *threads = thread_map__new_event(&event->thread_map);
1074 size_t ret;
1075
1076 ret = fprintf(fp, " nr: ");
1077
1078 if (threads)
1079 ret += thread_map__fprintf(threads, fp);
1080 else
1081 ret += fprintf(fp, "failed to get threads from event\n");
1082
1083 thread_map__put(threads);
1084 return ret;
1085}
1086
1087size_t perf_event__fprintf_cpu_map(union perf_event *event, FILE *fp)
1088{
1089 struct cpu_map *cpus = cpu_map__new_data(&event->cpu_map.data);
1090 size_t ret;
1091
1092 ret = fprintf(fp, " nr: ");
1093
1094 if (cpus)
1095 ret += cpu_map__fprintf(cpus, fp);
1096 else
1097 ret += fprintf(fp, "failed to get cpumap from event\n");
1098
1099 cpu_map__put(cpus);
1100 return ret;
1101}
1102
1103int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
1104 union perf_event *event,
1105 struct perf_sample *sample,
1106 struct machine *machine)
1107{
1108 return machine__process_mmap_event(machine, event, sample);
1109}
1110
1111int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused,
1112 union perf_event *event,
1113 struct perf_sample *sample,
1114 struct machine *machine)
1115{
1116 return machine__process_mmap2_event(machine, event, sample);
1117}
1118
1119size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
1120{
1121 return fprintf(fp, "(%d:%d):(%d:%d)\n",
1122 event->fork.pid, event->fork.tid,
1123 event->fork.ppid, event->fork.ptid);
1124}
1125
1126int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
1127 union perf_event *event,
1128 struct perf_sample *sample,
1129 struct machine *machine)
1130{
1131 return machine__process_fork_event(machine, event, sample);
1132}
1133
1134int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
1135 union perf_event *event,
1136 struct perf_sample *sample,
1137 struct machine *machine)
1138{
1139 return machine__process_exit_event(machine, event, sample);
1140}
1141
1142size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp)
1143{
1144 return fprintf(fp, " offset: %#"PRIx64" size: %#"PRIx64" flags: %#"PRIx64" [%s%s]\n",
1145 event->aux.aux_offset, event->aux.aux_size,
1146 event->aux.flags,
1147 event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "",
1148 event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "");
1149}
1150
1151size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp)
1152{
1153 return fprintf(fp, " pid: %u tid: %u\n",
1154 event->itrace_start.pid, event->itrace_start.tid);
1155}
1156
1157size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp)
1158{
1159 bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
1160 const char *in_out = out ? "OUT" : "IN ";
1161
1162 if (event->header.type == PERF_RECORD_SWITCH)
1163 return fprintf(fp, " %s\n", in_out);
1164
1165 return fprintf(fp, " %s %s pid/tid: %5u/%-5u\n",
1166 in_out, out ? "next" : "prev",
1167 event->context_switch.next_prev_pid,
1168 event->context_switch.next_prev_tid);
1169}
1170
1171size_t perf_event__fprintf(union perf_event *event, FILE *fp)
1172{
1173 size_t ret = fprintf(fp, "PERF_RECORD_%s",
1174 perf_event__name(event->header.type));
1175
1176 switch (event->header.type) {
1177 case PERF_RECORD_COMM:
1178 ret += perf_event__fprintf_comm(event, fp);
1179 break;
1180 case PERF_RECORD_FORK:
1181 case PERF_RECORD_EXIT:
1182 ret += perf_event__fprintf_task(event, fp);
1183 break;
1184 case PERF_RECORD_MMAP:
1185 ret += perf_event__fprintf_mmap(event, fp);
1186 break;
1187 case PERF_RECORD_MMAP2:
1188 ret += perf_event__fprintf_mmap2(event, fp);
1189 break;
1190 case PERF_RECORD_AUX:
1191 ret += perf_event__fprintf_aux(event, fp);
1192 break;
1193 case PERF_RECORD_ITRACE_START:
1194 ret += perf_event__fprintf_itrace_start(event, fp);
1195 break;
1196 case PERF_RECORD_SWITCH:
1197 case PERF_RECORD_SWITCH_CPU_WIDE:
1198 ret += perf_event__fprintf_switch(event, fp);
1199 break;
1200 default:
1201 ret += fprintf(fp, "\n");
1202 }
1203
1204 return ret;
1205}
1206
1207int perf_event__process(struct perf_tool *tool __maybe_unused,
1208 union perf_event *event,
1209 struct perf_sample *sample,
1210 struct machine *machine)
1211{
1212 return machine__process_event(machine, event, sample);
1213}
1214
1215void thread__find_addr_map(struct thread *thread, u8 cpumode,
1216 enum map_type type, u64 addr,
1217 struct addr_location *al)
1218{
1219 struct map_groups *mg = thread->mg;
1220 struct machine *machine = mg->machine;
1221 bool load_map = false;
1222
1223 al->machine = machine;
1224 al->thread = thread;
1225 al->addr = addr;
1226 al->cpumode = cpumode;
1227 al->filtered = 0;
1228
1229 if (machine == NULL) {
1230 al->map = NULL;
1231 return;
1232 }
1233
1234 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
1235 al->level = 'k';
1236 mg = &machine->kmaps;
1237 load_map = true;
1238 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
1239 al->level = '.';
1240 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
1241 al->level = 'g';
1242 mg = &machine->kmaps;
1243 load_map = true;
1244 } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) {
1245 al->level = 'u';
1246 } else {
1247 al->level = 'H';
1248 al->map = NULL;
1249
1250 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
1251 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
1252 !perf_guest)
1253 al->filtered |= (1 << HIST_FILTER__GUEST);
1254 if ((cpumode == PERF_RECORD_MISC_USER ||
1255 cpumode == PERF_RECORD_MISC_KERNEL) &&
1256 !perf_host)
1257 al->filtered |= (1 << HIST_FILTER__HOST);
1258
1259 return;
1260 }
1261try_again:
1262 al->map = map_groups__find(mg, type, al->addr);
1263 if (al->map == NULL) {
1264 /*
1265 * If this is outside of all known maps, and is a negative
1266 * address, try to look it up in the kernel dso, as it might be
1267 * a vsyscall or vdso (which executes in user-mode).
1268 *
1269 * XXX This is nasty, we should have a symbol list in the
1270 * "[vdso]" dso, but for now lets use the old trick of looking
1271 * in the whole kernel symbol list.
1272 */
1273 if (cpumode == PERF_RECORD_MISC_USER && machine &&
1274 mg != &machine->kmaps &&
1275 machine__kernel_ip(machine, al->addr)) {
1276 mg = &machine->kmaps;
1277 load_map = true;
1278 goto try_again;
1279 }
1280 } else {
1281 /*
1282 * Kernel maps might be changed when loading symbols so loading
1283 * must be done prior to using kernel maps.
1284 */
1285 if (load_map)
1286 map__load(al->map, machine->symbol_filter);
1287 al->addr = al->map->map_ip(al->map, al->addr);
1288 }
1289}
1290
1291void thread__find_addr_location(struct thread *thread,
1292 u8 cpumode, enum map_type type, u64 addr,
1293 struct addr_location *al)
1294{
1295 thread__find_addr_map(thread, cpumode, type, addr, al);
1296 if (al->map != NULL)
1297 al->sym = map__find_symbol(al->map, al->addr,
1298 thread->mg->machine->symbol_filter);
1299 else
1300 al->sym = NULL;
1301}
1302
1303/*
1304 * Callers need to drop the reference to al->thread, obtained in
1305 * machine__findnew_thread()
1306 */
1307int machine__resolve(struct machine *machine, struct addr_location *al,
1308 struct perf_sample *sample)
1309{
1310 struct thread *thread = machine__findnew_thread(machine, sample->pid,
1311 sample->tid);
1312
1313 if (thread == NULL)
1314 return -1;
1315
1316 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
1317 /*
1318 * Have we already created the kernel maps for this machine?
1319 *
1320 * This should have happened earlier, when we processed the kernel MMAP
1321 * events, but for older perf.data files there was no such thing, so do
1322 * it now.
1323 */
1324 if (sample->cpumode == PERF_RECORD_MISC_KERNEL &&
1325 machine__kernel_map(machine) == NULL)
1326 machine__create_kernel_maps(machine);
1327
1328 thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->ip, al);
1329 dump_printf(" ...... dso: %s\n",
1330 al->map ? al->map->dso->long_name :
1331 al->level == 'H' ? "[hypervisor]" : "<not found>");
1332
1333 if (thread__is_filtered(thread))
1334 al->filtered |= (1 << HIST_FILTER__THREAD);
1335
1336 al->sym = NULL;
1337 al->cpu = sample->cpu;
1338 al->socket = -1;
1339
1340 if (al->cpu >= 0) {
1341 struct perf_env *env = machine->env;
1342
1343 if (env && env->cpu)
1344 al->socket = env->cpu[al->cpu].socket_id;
1345 }
1346
1347 if (al->map) {
1348 struct dso *dso = al->map->dso;
1349
1350 if (symbol_conf.dso_list &&
1351 (!dso || !(strlist__has_entry(symbol_conf.dso_list,
1352 dso->short_name) ||
1353 (dso->short_name != dso->long_name &&
1354 strlist__has_entry(symbol_conf.dso_list,
1355 dso->long_name))))) {
1356 al->filtered |= (1 << HIST_FILTER__DSO);
1357 }
1358
1359 al->sym = map__find_symbol(al->map, al->addr,
1360 machine->symbol_filter);
1361 }
1362
1363 if (symbol_conf.sym_list &&
1364 (!al->sym || !strlist__has_entry(symbol_conf.sym_list,
1365 al->sym->name))) {
1366 al->filtered |= (1 << HIST_FILTER__SYMBOL);
1367 }
1368
1369 return 0;
1370}
1371
1372/*
1373 * The preprocess_sample method will return with reference counts for the
1374 * in it, when done using (and perhaps getting ref counts if needing to
1375 * keep a pointer to one of those entries) it must be paired with
1376 * addr_location__put(), so that the refcounts can be decremented.
1377 */
1378void addr_location__put(struct addr_location *al)
1379{
1380 thread__zput(al->thread);
1381}
1382
1383bool is_bts_event(struct perf_event_attr *attr)
1384{
1385 return attr->type == PERF_TYPE_HARDWARE &&
1386 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
1387 attr->sample_period == 1;
1388}
1389
1390bool sample_addr_correlates_sym(struct perf_event_attr *attr)
1391{
1392 if (attr->type == PERF_TYPE_SOFTWARE &&
1393 (attr->config == PERF_COUNT_SW_PAGE_FAULTS ||
1394 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
1395 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ))
1396 return true;
1397
1398 if (is_bts_event(attr))
1399 return true;
1400
1401 return false;
1402}
1403
1404void thread__resolve(struct thread *thread, struct addr_location *al,
1405 struct perf_sample *sample)
1406{
1407 thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->addr, al);
1408 if (!al->map)
1409 thread__find_addr_map(thread, sample->cpumode, MAP__VARIABLE,
1410 sample->addr, al);
1411
1412 al->cpu = sample->cpu;
1413 al->sym = NULL;
1414
1415 if (al->map)
1416 al->sym = map__find_symbol(al->map, al->addr, NULL);
1417}
1#include <errno.h>
2#include <fcntl.h>
3#include <inttypes.h>
4#include <linux/kernel.h>
5#include <linux/types.h>
6#include <perf/cpumap.h>
7#include <sys/types.h>
8#include <sys/stat.h>
9#include <unistd.h>
10#include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */
11#include <linux/perf_event.h>
12#include <linux/zalloc.h>
13#include "cpumap.h"
14#include "dso.h"
15#include "event.h"
16#include "debug.h"
17#include "hist.h"
18#include "machine.h"
19#include "sort.h"
20#include "string2.h"
21#include "strlist.h"
22#include "thread.h"
23#include "thread_map.h"
24#include "time-utils.h"
25#include <linux/ctype.h>
26#include "map.h"
27#include "util/namespaces.h"
28#include "symbol.h"
29#include "symbol/kallsyms.h"
30#include "asm/bug.h"
31#include "stat.h"
32#include "session.h"
33#include "bpf-event.h"
34#include "print_binary.h"
35#include "tool.h"
36#include "util.h"
37
38static const char *perf_event__names[] = {
39 [0] = "TOTAL",
40 [PERF_RECORD_MMAP] = "MMAP",
41 [PERF_RECORD_MMAP2] = "MMAP2",
42 [PERF_RECORD_LOST] = "LOST",
43 [PERF_RECORD_COMM] = "COMM",
44 [PERF_RECORD_EXIT] = "EXIT",
45 [PERF_RECORD_THROTTLE] = "THROTTLE",
46 [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE",
47 [PERF_RECORD_FORK] = "FORK",
48 [PERF_RECORD_READ] = "READ",
49 [PERF_RECORD_SAMPLE] = "SAMPLE",
50 [PERF_RECORD_AUX] = "AUX",
51 [PERF_RECORD_ITRACE_START] = "ITRACE_START",
52 [PERF_RECORD_LOST_SAMPLES] = "LOST_SAMPLES",
53 [PERF_RECORD_SWITCH] = "SWITCH",
54 [PERF_RECORD_SWITCH_CPU_WIDE] = "SWITCH_CPU_WIDE",
55 [PERF_RECORD_NAMESPACES] = "NAMESPACES",
56 [PERF_RECORD_KSYMBOL] = "KSYMBOL",
57 [PERF_RECORD_BPF_EVENT] = "BPF_EVENT",
58 [PERF_RECORD_CGROUP] = "CGROUP",
59 [PERF_RECORD_TEXT_POKE] = "TEXT_POKE",
60 [PERF_RECORD_AUX_OUTPUT_HW_ID] = "AUX_OUTPUT_HW_ID",
61 [PERF_RECORD_HEADER_ATTR] = "ATTR",
62 [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE",
63 [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA",
64 [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID",
65 [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND",
66 [PERF_RECORD_ID_INDEX] = "ID_INDEX",
67 [PERF_RECORD_AUXTRACE_INFO] = "AUXTRACE_INFO",
68 [PERF_RECORD_AUXTRACE] = "AUXTRACE",
69 [PERF_RECORD_AUXTRACE_ERROR] = "AUXTRACE_ERROR",
70 [PERF_RECORD_THREAD_MAP] = "THREAD_MAP",
71 [PERF_RECORD_CPU_MAP] = "CPU_MAP",
72 [PERF_RECORD_STAT_CONFIG] = "STAT_CONFIG",
73 [PERF_RECORD_STAT] = "STAT",
74 [PERF_RECORD_STAT_ROUND] = "STAT_ROUND",
75 [PERF_RECORD_EVENT_UPDATE] = "EVENT_UPDATE",
76 [PERF_RECORD_TIME_CONV] = "TIME_CONV",
77 [PERF_RECORD_HEADER_FEATURE] = "FEATURE",
78 [PERF_RECORD_COMPRESSED] = "COMPRESSED",
79 [PERF_RECORD_FINISHED_INIT] = "FINISHED_INIT",
80};
81
82const char *perf_event__name(unsigned int id)
83{
84 if (id >= ARRAY_SIZE(perf_event__names))
85 return "INVALID";
86 if (!perf_event__names[id])
87 return "UNKNOWN";
88 return perf_event__names[id];
89}
90
91struct process_symbol_args {
92 const char *name;
93 u64 start;
94};
95
96static int find_func_symbol_cb(void *arg, const char *name, char type,
97 u64 start)
98{
99 struct process_symbol_args *args = arg;
100
101 /*
102 * Must be a function or at least an alias, as in PARISC64, where "_text" is
103 * an 'A' to the same address as "_stext".
104 */
105 if (!(kallsyms__is_function(type) ||
106 type == 'A') || strcmp(name, args->name))
107 return 0;
108
109 args->start = start;
110 return 1;
111}
112
113static int find_any_symbol_cb(void *arg, const char *name,
114 char type __maybe_unused, u64 start)
115{
116 struct process_symbol_args *args = arg;
117
118 if (strcmp(name, args->name))
119 return 0;
120
121 args->start = start;
122 return 1;
123}
124
125int kallsyms__get_function_start(const char *kallsyms_filename,
126 const char *symbol_name, u64 *addr)
127{
128 struct process_symbol_args args = { .name = symbol_name, };
129
130 if (kallsyms__parse(kallsyms_filename, &args, find_func_symbol_cb) <= 0)
131 return -1;
132
133 *addr = args.start;
134 return 0;
135}
136
137int kallsyms__get_symbol_start(const char *kallsyms_filename,
138 const char *symbol_name, u64 *addr)
139{
140 struct process_symbol_args args = { .name = symbol_name, };
141
142 if (kallsyms__parse(kallsyms_filename, &args, find_any_symbol_cb) <= 0)
143 return -1;
144
145 *addr = args.start;
146 return 0;
147}
148
149void perf_event__read_stat_config(struct perf_stat_config *config,
150 struct perf_record_stat_config *event)
151{
152 unsigned i;
153
154 for (i = 0; i < event->nr; i++) {
155
156 switch (event->data[i].tag) {
157#define CASE(__term, __val) \
158 case PERF_STAT_CONFIG_TERM__##__term: \
159 config->__val = event->data[i].val; \
160 break;
161
162 CASE(AGGR_MODE, aggr_mode)
163 CASE(SCALE, scale)
164 CASE(INTERVAL, interval)
165 CASE(AGGR_LEVEL, aggr_level)
166#undef CASE
167 default:
168 pr_warning("unknown stat config term %" PRI_lu64 "\n",
169 event->data[i].tag);
170 }
171 }
172}
173
174size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
175{
176 const char *s;
177
178 if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC)
179 s = " exec";
180 else
181 s = "";
182
183 return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid);
184}
185
186size_t perf_event__fprintf_namespaces(union perf_event *event, FILE *fp)
187{
188 size_t ret = 0;
189 struct perf_ns_link_info *ns_link_info;
190 u32 nr_namespaces, idx;
191
192 ns_link_info = event->namespaces.link_info;
193 nr_namespaces = event->namespaces.nr_namespaces;
194
195 ret += fprintf(fp, " %d/%d - nr_namespaces: %u\n\t\t[",
196 event->namespaces.pid,
197 event->namespaces.tid,
198 nr_namespaces);
199
200 for (idx = 0; idx < nr_namespaces; idx++) {
201 if (idx && (idx % 4 == 0))
202 ret += fprintf(fp, "\n\t\t ");
203
204 ret += fprintf(fp, "%u/%s: %" PRIu64 "/%#" PRIx64 "%s", idx,
205 perf_ns__name(idx), (u64)ns_link_info[idx].dev,
206 (u64)ns_link_info[idx].ino,
207 ((idx + 1) != nr_namespaces) ? ", " : "]\n");
208 }
209
210 return ret;
211}
212
213size_t perf_event__fprintf_cgroup(union perf_event *event, FILE *fp)
214{
215 return fprintf(fp, " cgroup: %" PRI_lu64 " %s\n",
216 event->cgroup.id, event->cgroup.path);
217}
218
219int perf_event__process_comm(const struct perf_tool *tool __maybe_unused,
220 union perf_event *event,
221 struct perf_sample *sample,
222 struct machine *machine)
223{
224 return machine__process_comm_event(machine, event, sample);
225}
226
227int perf_event__process_namespaces(const struct perf_tool *tool __maybe_unused,
228 union perf_event *event,
229 struct perf_sample *sample,
230 struct machine *machine)
231{
232 return machine__process_namespaces_event(machine, event, sample);
233}
234
235int perf_event__process_cgroup(const struct perf_tool *tool __maybe_unused,
236 union perf_event *event,
237 struct perf_sample *sample,
238 struct machine *machine)
239{
240 return machine__process_cgroup_event(machine, event, sample);
241}
242
243int perf_event__process_lost(const struct perf_tool *tool __maybe_unused,
244 union perf_event *event,
245 struct perf_sample *sample,
246 struct machine *machine)
247{
248 return machine__process_lost_event(machine, event, sample);
249}
250
251int perf_event__process_aux(const struct perf_tool *tool __maybe_unused,
252 union perf_event *event,
253 struct perf_sample *sample __maybe_unused,
254 struct machine *machine)
255{
256 return machine__process_aux_event(machine, event);
257}
258
259int perf_event__process_itrace_start(const struct perf_tool *tool __maybe_unused,
260 union perf_event *event,
261 struct perf_sample *sample __maybe_unused,
262 struct machine *machine)
263{
264 return machine__process_itrace_start_event(machine, event);
265}
266
267int perf_event__process_aux_output_hw_id(const struct perf_tool *tool __maybe_unused,
268 union perf_event *event,
269 struct perf_sample *sample __maybe_unused,
270 struct machine *machine)
271{
272 return machine__process_aux_output_hw_id_event(machine, event);
273}
274
275int perf_event__process_lost_samples(const struct perf_tool *tool __maybe_unused,
276 union perf_event *event,
277 struct perf_sample *sample,
278 struct machine *machine)
279{
280 return machine__process_lost_samples_event(machine, event, sample);
281}
282
283int perf_event__process_switch(const struct perf_tool *tool __maybe_unused,
284 union perf_event *event,
285 struct perf_sample *sample __maybe_unused,
286 struct machine *machine)
287{
288 return machine__process_switch_event(machine, event);
289}
290
291int perf_event__process_ksymbol(const struct perf_tool *tool __maybe_unused,
292 union perf_event *event,
293 struct perf_sample *sample __maybe_unused,
294 struct machine *machine)
295{
296 return machine__process_ksymbol(machine, event, sample);
297}
298
299int perf_event__process_bpf(const struct perf_tool *tool __maybe_unused,
300 union perf_event *event,
301 struct perf_sample *sample,
302 struct machine *machine)
303{
304 return machine__process_bpf(machine, event, sample);
305}
306
307int perf_event__process_text_poke(const struct perf_tool *tool __maybe_unused,
308 union perf_event *event,
309 struct perf_sample *sample,
310 struct machine *machine)
311{
312 return machine__process_text_poke(machine, event, sample);
313}
314
315size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
316{
317 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 "]: %c %s\n",
318 event->mmap.pid, event->mmap.tid, event->mmap.start,
319 event->mmap.len, event->mmap.pgoff,
320 (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
321 event->mmap.filename);
322}
323
324size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
325{
326 if (event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) {
327 char sbuild_id[SBUILD_ID_SIZE];
328 struct build_id bid;
329
330 build_id__init(&bid, event->mmap2.build_id,
331 event->mmap2.build_id_size);
332 build_id__sprintf(&bid, sbuild_id);
333
334 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64
335 " <%s>]: %c%c%c%c %s\n",
336 event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
337 event->mmap2.len, event->mmap2.pgoff, sbuild_id,
338 (event->mmap2.prot & PROT_READ) ? 'r' : '-',
339 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
340 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
341 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
342 event->mmap2.filename);
343 } else {
344 return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64
345 " %02x:%02x %"PRI_lu64" %"PRI_lu64"]: %c%c%c%c %s\n",
346 event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
347 event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj,
348 event->mmap2.min, event->mmap2.ino,
349 event->mmap2.ino_generation,
350 (event->mmap2.prot & PROT_READ) ? 'r' : '-',
351 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
352 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
353 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
354 event->mmap2.filename);
355 }
356}
357
358size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp)
359{
360 struct perf_thread_map *threads = thread_map__new_event(&event->thread_map);
361 size_t ret;
362
363 ret = fprintf(fp, " nr: ");
364
365 if (threads)
366 ret += thread_map__fprintf(threads, fp);
367 else
368 ret += fprintf(fp, "failed to get threads from event\n");
369
370 perf_thread_map__put(threads);
371 return ret;
372}
373
374size_t perf_event__fprintf_cpu_map(union perf_event *event, FILE *fp)
375{
376 struct perf_cpu_map *cpus = cpu_map__new_data(&event->cpu_map.data);
377 size_t ret;
378
379 ret = fprintf(fp, ": ");
380
381 if (cpus)
382 ret += cpu_map__fprintf(cpus, fp);
383 else
384 ret += fprintf(fp, "failed to get cpumap from event\n");
385
386 perf_cpu_map__put(cpus);
387 return ret;
388}
389
390int perf_event__process_mmap(const struct perf_tool *tool __maybe_unused,
391 union perf_event *event,
392 struct perf_sample *sample,
393 struct machine *machine)
394{
395 return machine__process_mmap_event(machine, event, sample);
396}
397
398int perf_event__process_mmap2(const struct perf_tool *tool __maybe_unused,
399 union perf_event *event,
400 struct perf_sample *sample,
401 struct machine *machine)
402{
403 return machine__process_mmap2_event(machine, event, sample);
404}
405
406size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
407{
408 return fprintf(fp, "(%d:%d):(%d:%d)\n",
409 event->fork.pid, event->fork.tid,
410 event->fork.ppid, event->fork.ptid);
411}
412
413int perf_event__process_fork(const struct perf_tool *tool __maybe_unused,
414 union perf_event *event,
415 struct perf_sample *sample,
416 struct machine *machine)
417{
418 return machine__process_fork_event(machine, event, sample);
419}
420
421int perf_event__process_exit(const struct perf_tool *tool __maybe_unused,
422 union perf_event *event,
423 struct perf_sample *sample,
424 struct machine *machine)
425{
426 return machine__process_exit_event(machine, event, sample);
427}
428
429int perf_event__exit_del_thread(const struct perf_tool *tool __maybe_unused,
430 union perf_event *event,
431 struct perf_sample *sample __maybe_unused,
432 struct machine *machine)
433{
434 struct thread *thread = machine__findnew_thread(machine,
435 event->fork.pid,
436 event->fork.tid);
437
438 dump_printf("(%d:%d):(%d:%d)\n", event->fork.pid, event->fork.tid,
439 event->fork.ppid, event->fork.ptid);
440
441 if (thread) {
442 machine__remove_thread(machine, thread);
443 thread__put(thread);
444 }
445
446 return 0;
447}
448
449size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp)
450{
451 return fprintf(fp, " offset: %#"PRI_lx64" size: %#"PRI_lx64" flags: %#"PRI_lx64" [%s%s%s]\n",
452 event->aux.aux_offset, event->aux.aux_size,
453 event->aux.flags,
454 event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "",
455 event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "",
456 event->aux.flags & PERF_AUX_FLAG_PARTIAL ? "P" : "");
457}
458
459size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp)
460{
461 return fprintf(fp, " pid: %u tid: %u\n",
462 event->itrace_start.pid, event->itrace_start.tid);
463}
464
465size_t perf_event__fprintf_aux_output_hw_id(union perf_event *event, FILE *fp)
466{
467 return fprintf(fp, " hw_id: %#"PRI_lx64"\n",
468 event->aux_output_hw_id.hw_id);
469}
470
471size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp)
472{
473 bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
474 const char *in_out = !out ? "IN " :
475 !(event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT) ?
476 "OUT " : "OUT preempt";
477
478 if (event->header.type == PERF_RECORD_SWITCH)
479 return fprintf(fp, " %s\n", in_out);
480
481 return fprintf(fp, " %s %s pid/tid: %5d/%-5d\n",
482 in_out, out ? "next" : "prev",
483 event->context_switch.next_prev_pid,
484 event->context_switch.next_prev_tid);
485}
486
487static size_t perf_event__fprintf_lost(union perf_event *event, FILE *fp)
488{
489 return fprintf(fp, " lost %" PRI_lu64 "\n", event->lost.lost);
490}
491
492size_t perf_event__fprintf_ksymbol(union perf_event *event, FILE *fp)
493{
494 return fprintf(fp, " addr %" PRI_lx64 " len %u type %u flags 0x%x name %s\n",
495 event->ksymbol.addr, event->ksymbol.len,
496 event->ksymbol.ksym_type,
497 event->ksymbol.flags, event->ksymbol.name);
498}
499
500size_t perf_event__fprintf_bpf(union perf_event *event, FILE *fp)
501{
502 return fprintf(fp, " type %u, flags %u, id %u\n",
503 event->bpf.type, event->bpf.flags, event->bpf.id);
504}
505
506static int text_poke_printer(enum binary_printer_ops op, unsigned int val,
507 void *extra, FILE *fp)
508{
509 bool old = *(bool *)extra;
510
511 switch ((int)op) {
512 case BINARY_PRINT_LINE_BEGIN:
513 return fprintf(fp, " %s bytes:", old ? "Old" : "New");
514 case BINARY_PRINT_NUM_DATA:
515 return fprintf(fp, " %02x", val);
516 case BINARY_PRINT_LINE_END:
517 return fprintf(fp, "\n");
518 default:
519 return 0;
520 }
521}
522
523size_t perf_event__fprintf_text_poke(union perf_event *event, struct machine *machine, FILE *fp)
524{
525 struct perf_record_text_poke_event *tp = &event->text_poke;
526 size_t ret;
527 bool old;
528
529 ret = fprintf(fp, " %" PRI_lx64 " ", tp->addr);
530 if (machine) {
531 struct addr_location al;
532
533 addr_location__init(&al);
534 al.map = maps__find(machine__kernel_maps(machine), tp->addr);
535 if (al.map && map__load(al.map) >= 0) {
536 al.addr = map__map_ip(al.map, tp->addr);
537 al.sym = map__find_symbol(al.map, al.addr);
538 if (al.sym)
539 ret += symbol__fprintf_symname_offs(al.sym, &al, fp);
540 }
541 addr_location__exit(&al);
542 }
543 ret += fprintf(fp, " old len %u new len %u\n", tp->old_len, tp->new_len);
544 old = true;
545 ret += binary__fprintf(tp->bytes, tp->old_len, 16, text_poke_printer,
546 &old, fp);
547 old = false;
548 ret += binary__fprintf(tp->bytes + tp->old_len, tp->new_len, 16,
549 text_poke_printer, &old, fp);
550 return ret;
551}
552
553size_t perf_event__fprintf(union perf_event *event, struct machine *machine, FILE *fp)
554{
555 size_t ret = fprintf(fp, "PERF_RECORD_%s",
556 perf_event__name(event->header.type));
557
558 switch (event->header.type) {
559 case PERF_RECORD_COMM:
560 ret += perf_event__fprintf_comm(event, fp);
561 break;
562 case PERF_RECORD_FORK:
563 case PERF_RECORD_EXIT:
564 ret += perf_event__fprintf_task(event, fp);
565 break;
566 case PERF_RECORD_MMAP:
567 ret += perf_event__fprintf_mmap(event, fp);
568 break;
569 case PERF_RECORD_NAMESPACES:
570 ret += perf_event__fprintf_namespaces(event, fp);
571 break;
572 case PERF_RECORD_CGROUP:
573 ret += perf_event__fprintf_cgroup(event, fp);
574 break;
575 case PERF_RECORD_MMAP2:
576 ret += perf_event__fprintf_mmap2(event, fp);
577 break;
578 case PERF_RECORD_AUX:
579 ret += perf_event__fprintf_aux(event, fp);
580 break;
581 case PERF_RECORD_ITRACE_START:
582 ret += perf_event__fprintf_itrace_start(event, fp);
583 break;
584 case PERF_RECORD_SWITCH:
585 case PERF_RECORD_SWITCH_CPU_WIDE:
586 ret += perf_event__fprintf_switch(event, fp);
587 break;
588 case PERF_RECORD_LOST:
589 ret += perf_event__fprintf_lost(event, fp);
590 break;
591 case PERF_RECORD_KSYMBOL:
592 ret += perf_event__fprintf_ksymbol(event, fp);
593 break;
594 case PERF_RECORD_BPF_EVENT:
595 ret += perf_event__fprintf_bpf(event, fp);
596 break;
597 case PERF_RECORD_TEXT_POKE:
598 ret += perf_event__fprintf_text_poke(event, machine, fp);
599 break;
600 case PERF_RECORD_AUX_OUTPUT_HW_ID:
601 ret += perf_event__fprintf_aux_output_hw_id(event, fp);
602 break;
603 default:
604 ret += fprintf(fp, "\n");
605 }
606
607 return ret;
608}
609
610int perf_event__process(const struct perf_tool *tool __maybe_unused,
611 union perf_event *event,
612 struct perf_sample *sample,
613 struct machine *machine)
614{
615 return machine__process_event(machine, event, sample);
616}
617
618struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr,
619 struct addr_location *al)
620{
621 struct maps *maps = thread__maps(thread);
622 struct machine *machine = maps__machine(maps);
623 bool load_map = false;
624
625 maps__zput(al->maps);
626 map__zput(al->map);
627 thread__zput(al->thread);
628 al->thread = thread__get(thread);
629
630 al->addr = addr;
631 al->cpumode = cpumode;
632 al->filtered = 0;
633
634 if (machine == NULL)
635 return NULL;
636
637 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
638 al->level = 'k';
639 maps = machine__kernel_maps(machine);
640 load_map = !symbol_conf.lazy_load_kernel_maps;
641 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
642 al->level = '.';
643 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
644 al->level = 'g';
645 maps = machine__kernel_maps(machine);
646 load_map = !symbol_conf.lazy_load_kernel_maps;
647 } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) {
648 al->level = 'u';
649 } else {
650 al->level = 'H';
651
652 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
653 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
654 !perf_guest)
655 al->filtered |= (1 << HIST_FILTER__GUEST);
656 if ((cpumode == PERF_RECORD_MISC_USER ||
657 cpumode == PERF_RECORD_MISC_KERNEL) &&
658 !perf_host)
659 al->filtered |= (1 << HIST_FILTER__HOST);
660
661 return NULL;
662 }
663 al->maps = maps__get(maps);
664 al->map = maps__find(maps, al->addr);
665 if (al->map != NULL) {
666 /*
667 * Kernel maps might be changed when loading symbols so loading
668 * must be done prior to using kernel maps.
669 */
670 if (load_map)
671 map__load(al->map);
672 al->addr = map__map_ip(al->map, al->addr);
673 }
674
675 return al->map;
676}
677
678/*
679 * For branch stacks or branch samples, the sample cpumode might not be correct
680 * because it applies only to the sample 'ip' and not necessary to 'addr' or
681 * branch stack addresses. If possible, use a fallback to deal with those cases.
682 */
683struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr,
684 struct addr_location *al)
685{
686 struct map *map = thread__find_map(thread, cpumode, addr, al);
687 struct machine *machine = maps__machine(thread__maps(thread));
688 u8 addr_cpumode = machine__addr_cpumode(machine, cpumode, addr);
689
690 if (map || addr_cpumode == cpumode)
691 return map;
692
693 return thread__find_map(thread, addr_cpumode, addr, al);
694}
695
696struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode,
697 u64 addr, struct addr_location *al)
698{
699 al->sym = NULL;
700 if (thread__find_map(thread, cpumode, addr, al))
701 al->sym = map__find_symbol(al->map, al->addr);
702 return al->sym;
703}
704
705struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode,
706 u64 addr, struct addr_location *al)
707{
708 al->sym = NULL;
709 if (thread__find_map_fb(thread, cpumode, addr, al))
710 al->sym = map__find_symbol(al->map, al->addr);
711 return al->sym;
712}
713
714static bool check_address_range(struct intlist *addr_list, int addr_range,
715 unsigned long addr)
716{
717 struct int_node *pos;
718
719 intlist__for_each_entry(pos, addr_list) {
720 if (addr >= pos->i && addr < pos->i + addr_range)
721 return true;
722 }
723
724 return false;
725}
726
727/*
728 * Callers need to drop the reference to al->thread, obtained in
729 * machine__findnew_thread()
730 */
731int machine__resolve(struct machine *machine, struct addr_location *al,
732 struct perf_sample *sample)
733{
734 struct thread *thread;
735 struct dso *dso;
736
737 if (symbol_conf.guest_code && !machine__is_host(machine))
738 thread = machine__findnew_guest_code(machine, sample->pid);
739 else
740 thread = machine__findnew_thread(machine, sample->pid, sample->tid);
741 if (thread == NULL)
742 return -1;
743
744 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread__tid(thread));
745 thread__find_map(thread, sample->cpumode, sample->ip, al);
746 dso = al->map ? map__dso(al->map) : NULL;
747 dump_printf(" ...... dso: %s\n",
748 dso
749 ? dso__long_name(dso)
750 : (al->level == 'H' ? "[hypervisor]" : "<not found>"));
751
752 if (thread__is_filtered(thread))
753 al->filtered |= (1 << HIST_FILTER__THREAD);
754
755 thread__put(thread);
756 thread = NULL;
757
758 al->sym = NULL;
759 al->cpu = sample->cpu;
760 al->socket = -1;
761 al->srcline = NULL;
762
763 if (al->cpu >= 0) {
764 struct perf_env *env = machine->env;
765
766 if (env && env->cpu)
767 al->socket = env->cpu[al->cpu].socket_id;
768 }
769
770 if (al->map) {
771 if (symbol_conf.dso_list &&
772 (!dso || !(strlist__has_entry(symbol_conf.dso_list,
773 dso__short_name(dso)) ||
774 (dso__short_name(dso) != dso__long_name(dso) &&
775 strlist__has_entry(symbol_conf.dso_list,
776 dso__long_name(dso)))))) {
777 al->filtered |= (1 << HIST_FILTER__DSO);
778 }
779
780 al->sym = map__find_symbol(al->map, al->addr);
781 } else if (symbol_conf.dso_list) {
782 al->filtered |= (1 << HIST_FILTER__DSO);
783 }
784
785 if (symbol_conf.sym_list) {
786 int ret = 0;
787 char al_addr_str[32];
788 size_t sz = sizeof(al_addr_str);
789
790 if (al->sym) {
791 ret = strlist__has_entry(symbol_conf.sym_list,
792 al->sym->name);
793 }
794 if (!ret && al->sym) {
795 snprintf(al_addr_str, sz, "0x%"PRIx64,
796 map__unmap_ip(al->map, al->sym->start));
797 ret = strlist__has_entry(symbol_conf.sym_list,
798 al_addr_str);
799 }
800 if (!ret && symbol_conf.addr_list && al->map) {
801 unsigned long addr = map__unmap_ip(al->map, al->addr);
802
803 ret = intlist__has_entry(symbol_conf.addr_list, addr);
804 if (!ret && symbol_conf.addr_range) {
805 ret = check_address_range(symbol_conf.addr_list,
806 symbol_conf.addr_range,
807 addr);
808 }
809 }
810
811 if (!ret)
812 al->filtered |= (1 << HIST_FILTER__SYMBOL);
813 }
814
815 return 0;
816}
817
818bool is_bts_event(struct perf_event_attr *attr)
819{
820 return attr->type == PERF_TYPE_HARDWARE &&
821 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
822 attr->sample_period == 1;
823}
824
825bool sample_addr_correlates_sym(struct perf_event_attr *attr)
826{
827 if (attr->type == PERF_TYPE_SOFTWARE &&
828 (attr->config == PERF_COUNT_SW_PAGE_FAULTS ||
829 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
830 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ))
831 return true;
832
833 if (is_bts_event(attr))
834 return true;
835
836 return false;
837}
838
839void thread__resolve(struct thread *thread, struct addr_location *al,
840 struct perf_sample *sample)
841{
842 thread__find_map_fb(thread, sample->cpumode, sample->addr, al);
843
844 al->cpu = sample->cpu;
845 al->sym = NULL;
846
847 if (al->map)
848 al->sym = map__find_symbol(al->map, al->addr);
849}