14 int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
16 map_groups__init(&machine->kmaps);
17 RB_CLEAR_NODE(&machine->rb_node);
18 INIT_LIST_HEAD(&machine->user_dsos);
19 INIT_LIST_HEAD(&machine->kernel_dsos);
21 machine->threads = RB_ROOT;
22 INIT_LIST_HEAD(&machine->dead_threads);
23 machine->last_match = NULL;
25 machine->kmaps.machine = machine;
28 machine->symbol_filter = NULL;
30 machine->root_dir = strdup(root_dir);
31 if (machine->root_dir == NULL)
34 if (pid != HOST_KERNEL_ID) {
35 struct thread *thread = machine__findnew_thread(machine, 0,
42 snprintf(comm, sizeof(comm), "[guest/%d]", pid);
43 thread__set_comm(thread, comm, 0);
49 struct machine *machine__new_host(void)
51 struct machine *machine = malloc(sizeof(*machine));
53 if (machine != NULL) {
54 machine__init(machine, "", HOST_KERNEL_ID);
56 if (machine__create_kernel_maps(machine) < 0)
66 static void dsos__delete(struct list_head *dsos)
70 list_for_each_entry_safe(pos, n, dsos, node) {
76 void machine__delete_dead_threads(struct machine *machine)
80 list_for_each_entry_safe(t, n, &machine->dead_threads, node) {
86 void machine__delete_threads(struct machine *machine)
88 struct rb_node *nd = rb_first(&machine->threads);
91 struct thread *t = rb_entry(nd, struct thread, rb_node);
93 rb_erase(&t->rb_node, &machine->threads);
99 void machine__exit(struct machine *machine)
101 map_groups__exit(&machine->kmaps);
102 dsos__delete(&machine->user_dsos);
103 dsos__delete(&machine->kernel_dsos);
104 free(machine->root_dir);
105 machine->root_dir = NULL;
108 void machine__delete(struct machine *machine)
110 machine__exit(machine);
114 void machines__init(struct machines *machines)
116 machine__init(&machines->host, "", HOST_KERNEL_ID);
117 machines->guests = RB_ROOT;
118 machines->symbol_filter = NULL;
121 void machines__exit(struct machines *machines)
123 machine__exit(&machines->host);
127 struct machine *machines__add(struct machines *machines, pid_t pid,
128 const char *root_dir)
130 struct rb_node **p = &machines->guests.rb_node;
131 struct rb_node *parent = NULL;
132 struct machine *pos, *machine = malloc(sizeof(*machine));
137 if (machine__init(machine, root_dir, pid) != 0) {
142 machine->symbol_filter = machines->symbol_filter;
146 pos = rb_entry(parent, struct machine, rb_node);
153 rb_link_node(&machine->rb_node, parent, p);
154 rb_insert_color(&machine->rb_node, &machines->guests);
159 void machines__set_symbol_filter(struct machines *machines,
160 symbol_filter_t symbol_filter)
164 machines->symbol_filter = symbol_filter;
165 machines->host.symbol_filter = symbol_filter;
167 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
168 struct machine *machine = rb_entry(nd, struct machine, rb_node);
170 machine->symbol_filter = symbol_filter;
174 struct machine *machines__find(struct machines *machines, pid_t pid)
176 struct rb_node **p = &machines->guests.rb_node;
177 struct rb_node *parent = NULL;
178 struct machine *machine;
179 struct machine *default_machine = NULL;
181 if (pid == HOST_KERNEL_ID)
182 return &machines->host;
186 machine = rb_entry(parent, struct machine, rb_node);
187 if (pid < machine->pid)
189 else if (pid > machine->pid)
194 default_machine = machine;
197 return default_machine;
200 struct machine *machines__findnew(struct machines *machines, pid_t pid)
203 const char *root_dir = "";
204 struct machine *machine = machines__find(machines, pid);
206 if (machine && (machine->pid == pid))
209 if ((pid != HOST_KERNEL_ID) &&
210 (pid != DEFAULT_GUEST_KERNEL_ID) &&
211 (symbol_conf.guestmount)) {
212 sprintf(path, "%s/%d", symbol_conf.guestmount, pid);
213 if (access(path, R_OK)) {
214 static struct strlist *seen;
217 seen = strlist__new(true, NULL);
219 if (!strlist__has_entry(seen, path)) {
220 pr_err("Can't access file %s\n", path);
221 strlist__add(seen, path);
229 machine = machines__add(machines, pid, root_dir);
234 void machines__process_guests(struct machines *machines,
235 machine__process_t process, void *data)
239 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
240 struct machine *pos = rb_entry(nd, struct machine, rb_node);
245 char *machine__mmap_name(struct machine *machine, char *bf, size_t size)
247 if (machine__is_host(machine))
248 snprintf(bf, size, "[%s]", "kernel.kallsyms");
249 else if (machine__is_default_guest(machine))
250 snprintf(bf, size, "[%s]", "guest.kernel.kallsyms");
252 snprintf(bf, size, "[%s.%d]", "guest.kernel.kallsyms",
259 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size)
261 struct rb_node *node;
262 struct machine *machine;
264 machines->host.id_hdr_size = id_hdr_size;
266 for (node = rb_first(&machines->guests); node; node = rb_next(node)) {
267 machine = rb_entry(node, struct machine, rb_node);
268 machine->id_hdr_size = id_hdr_size;
274 static struct thread *__machine__findnew_thread(struct machine *machine,
275 pid_t pid, pid_t tid,
278 struct rb_node **p = &machine->threads.rb_node;
279 struct rb_node *parent = NULL;
283 * Front-end cache - TID lookups come in blocks,
284 * so most of the time we dont have to look up
287 if (machine->last_match && machine->last_match->tid == tid) {
288 if (pid && pid != machine->last_match->pid_)
289 machine->last_match->pid_ = pid;
290 return machine->last_match;
295 th = rb_entry(parent, struct thread, rb_node);
297 if (th->tid == tid) {
298 machine->last_match = th;
299 if (pid && pid != th->pid_)
313 th = thread__new(pid, tid);
315 rb_link_node(&th->rb_node, parent, p);
316 rb_insert_color(&th->rb_node, &machine->threads);
317 machine->last_match = th;
323 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid,
326 return __machine__findnew_thread(machine, pid, tid, true);
329 struct thread *machine__find_thread(struct machine *machine, pid_t tid)
331 return __machine__findnew_thread(machine, 0, tid, false);
334 int machine__process_comm_event(struct machine *machine, union perf_event *event,
335 struct perf_sample *sample)
337 struct thread *thread = machine__findnew_thread(machine,
342 perf_event__fprintf_comm(event, stdout);
344 if (thread == NULL || thread__set_comm(thread, event->comm.comm, sample->time)) {
345 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
352 int machine__process_lost_event(struct machine *machine __maybe_unused,
353 union perf_event *event, struct perf_sample *sample __maybe_unused)
355 dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n",
356 event->lost.id, event->lost.lost);
360 struct map *machine__new_module(struct machine *machine, u64 start,
361 const char *filename)
364 struct dso *dso = __dsos__findnew(&machine->kernel_dsos, filename);
369 map = map__new2(start, dso, MAP__FUNCTION);
373 if (machine__is_host(machine))
374 dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE;
376 dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE;
377 map_groups__insert(&machine->kmaps, map);
381 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp)
384 size_t ret = __dsos__fprintf(&machines->host.kernel_dsos, fp) +
385 __dsos__fprintf(&machines->host.user_dsos, fp);
387 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
388 struct machine *pos = rb_entry(nd, struct machine, rb_node);
389 ret += __dsos__fprintf(&pos->kernel_dsos, fp);
390 ret += __dsos__fprintf(&pos->user_dsos, fp);
396 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp,
397 bool (skip)(struct dso *dso, int parm), int parm)
399 return __dsos__fprintf_buildid(&machine->kernel_dsos, fp, skip, parm) +
400 __dsos__fprintf_buildid(&machine->user_dsos, fp, skip, parm);
403 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp,
404 bool (skip)(struct dso *dso, int parm), int parm)
407 size_t ret = machine__fprintf_dsos_buildid(&machines->host, fp, skip, parm);
409 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
410 struct machine *pos = rb_entry(nd, struct machine, rb_node);
411 ret += machine__fprintf_dsos_buildid(pos, fp, skip, parm);
416 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp)
420 struct dso *kdso = machine->vmlinux_maps[MAP__FUNCTION]->dso;
422 if (kdso->has_build_id) {
423 char filename[PATH_MAX];
424 if (dso__build_id_filename(kdso, filename, sizeof(filename)))
425 printed += fprintf(fp, "[0] %s\n", filename);
428 for (i = 0; i < vmlinux_path__nr_entries; ++i)
429 printed += fprintf(fp, "[%d] %s\n",
430 i + kdso->has_build_id, vmlinux_path[i]);
435 size_t machine__fprintf(struct machine *machine, FILE *fp)
440 for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) {
441 struct thread *pos = rb_entry(nd, struct thread, rb_node);
443 ret += thread__fprintf(pos, fp);
449 static struct dso *machine__get_kernel(struct machine *machine)
451 const char *vmlinux_name = NULL;
454 if (machine__is_host(machine)) {
455 vmlinux_name = symbol_conf.vmlinux_name;
457 vmlinux_name = "[kernel.kallsyms]";
459 kernel = dso__kernel_findnew(machine, vmlinux_name,
465 if (machine__is_default_guest(machine))
466 vmlinux_name = symbol_conf.default_guest_vmlinux_name;
468 vmlinux_name = machine__mmap_name(machine, bf,
471 kernel = dso__kernel_findnew(machine, vmlinux_name,
473 DSO_TYPE_GUEST_KERNEL);
476 if (kernel != NULL && (!kernel->has_build_id))
477 dso__read_running_kernel_build_id(kernel, machine);
482 struct process_args {
486 static int symbol__in_kernel(void *arg, const char *name,
487 char type __maybe_unused, u64 start)
489 struct process_args *args = arg;
491 if (strchr(name, '['))
498 /* Figure out the start address of kernel map from /proc/kallsyms */
499 static u64 machine__get_kernel_start_addr(struct machine *machine)
501 const char *filename;
503 struct process_args args;
505 if (machine__is_host(machine)) {
506 filename = "/proc/kallsyms";
508 if (machine__is_default_guest(machine))
509 filename = (char *)symbol_conf.default_guest_kallsyms;
511 sprintf(path, "%s/proc/kallsyms", machine->root_dir);
516 if (symbol__restricted_filename(filename, "/proc/kallsyms"))
519 if (kallsyms__parse(filename, &args, symbol__in_kernel) <= 0)
525 int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel)
528 u64 start = machine__get_kernel_start_addr(machine);
530 for (type = 0; type < MAP__NR_TYPES; ++type) {
533 machine->vmlinux_maps[type] = map__new2(start, kernel, type);
534 if (machine->vmlinux_maps[type] == NULL)
537 machine->vmlinux_maps[type]->map_ip =
538 machine->vmlinux_maps[type]->unmap_ip =
540 kmap = map__kmap(machine->vmlinux_maps[type]);
541 kmap->kmaps = &machine->kmaps;
542 map_groups__insert(&machine->kmaps,
543 machine->vmlinux_maps[type]);
549 void machine__destroy_kernel_maps(struct machine *machine)
553 for (type = 0; type < MAP__NR_TYPES; ++type) {
556 if (machine->vmlinux_maps[type] == NULL)
559 kmap = map__kmap(machine->vmlinux_maps[type]);
560 map_groups__remove(&machine->kmaps,
561 machine->vmlinux_maps[type]);
562 if (kmap->ref_reloc_sym) {
564 * ref_reloc_sym is shared among all maps, so free just
567 if (type == MAP__FUNCTION) {
568 free((char *)kmap->ref_reloc_sym->name);
569 kmap->ref_reloc_sym->name = NULL;
570 free(kmap->ref_reloc_sym);
572 kmap->ref_reloc_sym = NULL;
575 map__delete(machine->vmlinux_maps[type]);
576 machine->vmlinux_maps[type] = NULL;
580 int machines__create_guest_kernel_maps(struct machines *machines)
583 struct dirent **namelist = NULL;
589 if (symbol_conf.default_guest_vmlinux_name ||
590 symbol_conf.default_guest_modules ||
591 symbol_conf.default_guest_kallsyms) {
592 machines__create_kernel_maps(machines, DEFAULT_GUEST_KERNEL_ID);
595 if (symbol_conf.guestmount) {
596 items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL);
599 for (i = 0; i < items; i++) {
600 if (!isdigit(namelist[i]->d_name[0])) {
601 /* Filter out . and .. */
604 pid = (pid_t)strtol(namelist[i]->d_name, &endp, 10);
605 if ((*endp != '\0') ||
606 (endp == namelist[i]->d_name) ||
608 pr_debug("invalid directory (%s). Skipping.\n",
609 namelist[i]->d_name);
612 sprintf(path, "%s/%s/proc/kallsyms",
613 symbol_conf.guestmount,
614 namelist[i]->d_name);
615 ret = access(path, R_OK);
617 pr_debug("Can't access file %s\n", path);
620 machines__create_kernel_maps(machines, pid);
629 void machines__destroy_kernel_maps(struct machines *machines)
631 struct rb_node *next = rb_first(&machines->guests);
633 machine__destroy_kernel_maps(&machines->host);
636 struct machine *pos = rb_entry(next, struct machine, rb_node);
638 next = rb_next(&pos->rb_node);
639 rb_erase(&pos->rb_node, &machines->guests);
640 machine__delete(pos);
644 int machines__create_kernel_maps(struct machines *machines, pid_t pid)
646 struct machine *machine = machines__findnew(machines, pid);
651 return machine__create_kernel_maps(machine);
654 int machine__load_kallsyms(struct machine *machine, const char *filename,
655 enum map_type type, symbol_filter_t filter)
657 struct map *map = machine->vmlinux_maps[type];
658 int ret = dso__load_kallsyms(map->dso, filename, map, filter);
661 dso__set_loaded(map->dso, type);
663 * Since /proc/kallsyms will have multiple sessions for the
664 * kernel, with modules between them, fixup the end of all
667 __map_groups__fixup_end(&machine->kmaps, type);
673 int machine__load_vmlinux_path(struct machine *machine, enum map_type type,
674 symbol_filter_t filter)
676 struct map *map = machine->vmlinux_maps[type];
677 int ret = dso__load_vmlinux_path(map->dso, map, filter);
680 dso__set_loaded(map->dso, type);
685 static void map_groups__fixup_end(struct map_groups *mg)
688 for (i = 0; i < MAP__NR_TYPES; ++i)
689 __map_groups__fixup_end(mg, i);
692 static char *get_kernel_version(const char *root_dir)
694 char version[PATH_MAX];
697 const char *prefix = "Linux version ";
699 sprintf(version, "%s/proc/version", root_dir);
700 file = fopen(version, "r");
705 tmp = fgets(version, sizeof(version), file);
708 name = strstr(version, prefix);
711 name += strlen(prefix);
712 tmp = strchr(name, ' ');
719 static int map_groups__set_modules_path_dir(struct map_groups *mg,
720 const char *dir_name)
723 DIR *dir = opendir(dir_name);
727 pr_debug("%s: cannot open %s dir\n", __func__, dir_name);
731 while ((dent = readdir(dir)) != NULL) {
735 /*sshfs might return bad dent->d_type, so we have to stat*/
736 snprintf(path, sizeof(path), "%s/%s", dir_name, dent->d_name);
740 if (S_ISDIR(st.st_mode)) {
741 if (!strcmp(dent->d_name, ".") ||
742 !strcmp(dent->d_name, ".."))
745 ret = map_groups__set_modules_path_dir(mg, path);
749 char *dot = strrchr(dent->d_name, '.'),
754 if (dot == NULL || strcmp(dot, ".ko"))
756 snprintf(dso_name, sizeof(dso_name), "[%.*s]",
757 (int)(dot - dent->d_name), dent->d_name);
759 strxfrchar(dso_name, '-', '_');
760 map = map_groups__find_by_name(mg, MAP__FUNCTION,
765 long_name = strdup(path);
766 if (long_name == NULL) {
770 dso__set_long_name(map->dso, long_name);
771 map->dso->lname_alloc = 1;
772 dso__kernel_module_get_build_id(map->dso, "");
781 static int machine__set_modules_path(struct machine *machine)
784 char modules_path[PATH_MAX];
786 version = get_kernel_version(machine->root_dir);
790 snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s/kernel",
791 machine->root_dir, version);
794 return map_groups__set_modules_path_dir(&machine->kmaps, modules_path);
797 static int machine__create_module(void *arg, const char *name, u64 start)
799 struct machine *machine = arg;
802 map = machine__new_module(machine, start, name);
806 dso__kernel_module_get_build_id(map->dso, machine->root_dir);
811 static int machine__create_modules(struct machine *machine)
816 if (machine__is_default_guest(machine)) {
817 modules = symbol_conf.default_guest_modules;
819 snprintf(path, PATH_MAX, "%s/proc/modules", machine->root_dir);
823 if (symbol__restricted_filename(modules, "/proc/modules"))
826 if (modules__parse(modules, machine, machine__create_module))
829 if (!machine__set_modules_path(machine))
832 pr_debug("Problems setting modules path maps, continuing anyway...\n");
837 int machine__create_kernel_maps(struct machine *machine)
839 struct dso *kernel = machine__get_kernel(machine);
841 if (kernel == NULL ||
842 __machine__create_kernel_maps(machine, kernel) < 0)
845 if (symbol_conf.use_modules && machine__create_modules(machine) < 0) {
846 if (machine__is_host(machine))
847 pr_debug("Problems creating module maps, "
848 "continuing anyway...\n");
850 pr_debug("Problems creating module maps for guest %d, "
851 "continuing anyway...\n", machine->pid);
855 * Now that we have all the maps created, just set the ->end of them:
857 map_groups__fixup_end(&machine->kmaps);
861 static void machine__set_kernel_mmap_len(struct machine *machine,
862 union perf_event *event)
866 for (i = 0; i < MAP__NR_TYPES; i++) {
867 machine->vmlinux_maps[i]->start = event->mmap.start;
868 machine->vmlinux_maps[i]->end = (event->mmap.start +
871 * Be a bit paranoid here, some perf.data file came with
872 * a zero sized synthesized MMAP event for the kernel.
874 if (machine->vmlinux_maps[i]->end == 0)
875 machine->vmlinux_maps[i]->end = ~0ULL;
879 static bool machine__uses_kcore(struct machine *machine)
883 list_for_each_entry(dso, &machine->kernel_dsos, node) {
884 if (dso__is_kcore(dso))
891 static int machine__process_kernel_mmap_event(struct machine *machine,
892 union perf_event *event)
895 char kmmap_prefix[PATH_MAX];
896 enum dso_kernel_type kernel_type;
899 /* If we have maps from kcore then we do not need or want any others */
900 if (machine__uses_kcore(machine))
903 machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix));
904 if (machine__is_host(machine))
905 kernel_type = DSO_TYPE_KERNEL;
907 kernel_type = DSO_TYPE_GUEST_KERNEL;
909 is_kernel_mmap = memcmp(event->mmap.filename,
911 strlen(kmmap_prefix) - 1) == 0;
912 if (event->mmap.filename[0] == '/' ||
913 (!is_kernel_mmap && event->mmap.filename[0] == '[')) {
915 char short_module_name[1024];
918 if (event->mmap.filename[0] == '/') {
919 name = strrchr(event->mmap.filename, '/');
924 dot = strrchr(name, '.');
927 snprintf(short_module_name, sizeof(short_module_name),
928 "[%.*s]", (int)(dot - name), name);
929 strxfrchar(short_module_name, '-', '_');
931 strcpy(short_module_name, event->mmap.filename);
933 map = machine__new_module(machine, event->mmap.start,
934 event->mmap.filename);
938 name = strdup(short_module_name);
942 map->dso->short_name = name;
943 map->dso->sname_alloc = 1;
944 map->end = map->start + event->mmap.len;
945 } else if (is_kernel_mmap) {
946 const char *symbol_name = (event->mmap.filename +
947 strlen(kmmap_prefix));
949 * Should be there already, from the build-id table in
952 struct dso *kernel = __dsos__findnew(&machine->kernel_dsos,
957 kernel->kernel = kernel_type;
958 if (__machine__create_kernel_maps(machine, kernel) < 0)
961 machine__set_kernel_mmap_len(machine, event);
964 * Avoid using a zero address (kptr_restrict) for the ref reloc
965 * symbol. Effectively having zero here means that at record
966 * time /proc/sys/kernel/kptr_restrict was non zero.
968 if (event->mmap.pgoff != 0) {
969 maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps,
974 if (machine__is_default_guest(machine)) {
976 * preload dso of guest kernel and modules
978 dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION],
987 int machine__process_mmap2_event(struct machine *machine,
988 union perf_event *event,
989 struct perf_sample *sample __maybe_unused)
991 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
992 struct thread *thread;
998 perf_event__fprintf_mmap2(event, stdout);
1000 if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
1001 cpumode == PERF_RECORD_MISC_KERNEL) {
1002 ret = machine__process_kernel_mmap_event(machine, event);
1008 thread = machine__findnew_thread(machine, event->mmap2.pid,
1013 if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA)
1014 type = MAP__VARIABLE;
1016 type = MAP__FUNCTION;
1018 map = map__new(&machine->user_dsos, event->mmap2.start,
1019 event->mmap2.len, event->mmap2.pgoff,
1020 event->mmap2.pid, event->mmap2.maj,
1021 event->mmap2.min, event->mmap2.ino,
1022 event->mmap2.ino_generation,
1023 event->mmap2.filename, type);
1028 thread__insert_map(thread, map);
1032 dump_printf("problem processing PERF_RECORD_MMAP2, skipping event.\n");
1036 int machine__process_mmap_event(struct machine *machine, union perf_event *event,
1037 struct perf_sample *sample __maybe_unused)
1039 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1040 struct thread *thread;
1046 perf_event__fprintf_mmap(event, stdout);
1048 if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
1049 cpumode == PERF_RECORD_MISC_KERNEL) {
1050 ret = machine__process_kernel_mmap_event(machine, event);
1056 thread = machine__findnew_thread(machine, event->mmap.pid,
1061 if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA)
1062 type = MAP__VARIABLE;
1064 type = MAP__FUNCTION;
1066 map = map__new(&machine->user_dsos, event->mmap.start,
1067 event->mmap.len, event->mmap.pgoff,
1068 event->mmap.pid, 0, 0, 0, 0,
1069 event->mmap.filename,
1075 thread__insert_map(thread, map);
1079 dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n");
1083 static void machine__remove_thread(struct machine *machine, struct thread *th)
1085 machine->last_match = NULL;
1086 rb_erase(&th->rb_node, &machine->threads);
1088 * We may have references to this thread, for instance in some hist_entry
1089 * instances, so just move them to a separate list.
1091 list_add_tail(&th->node, &machine->dead_threads);
1094 int machine__process_fork_event(struct machine *machine, union perf_event *event,
1095 struct perf_sample *sample)
1097 struct thread *thread = machine__find_thread(machine, event->fork.tid);
1098 struct thread *parent = machine__findnew_thread(machine,
1102 /* if a thread currently exists for the thread id remove it */
1104 machine__remove_thread(machine, thread);
1106 thread = machine__findnew_thread(machine, event->fork.pid,
1109 perf_event__fprintf_task(event, stdout);
1111 if (thread == NULL || parent == NULL ||
1112 thread__fork(thread, parent, sample->time) < 0) {
1113 dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
1120 int machine__process_exit_event(struct machine *machine, union perf_event *event,
1121 struct perf_sample *sample __maybe_unused)
1123 struct thread *thread = machine__find_thread(machine, event->fork.tid);
1126 perf_event__fprintf_task(event, stdout);
1129 thread__exited(thread);
1134 int machine__process_event(struct machine *machine, union perf_event *event,
1135 struct perf_sample *sample)
1139 switch (event->header.type) {
1140 case PERF_RECORD_COMM:
1141 ret = machine__process_comm_event(machine, event, sample); break;
1142 case PERF_RECORD_MMAP:
1143 ret = machine__process_mmap_event(machine, event, sample); break;
1144 case PERF_RECORD_MMAP2:
1145 ret = machine__process_mmap2_event(machine, event, sample); break;
1146 case PERF_RECORD_FORK:
1147 ret = machine__process_fork_event(machine, event, sample); break;
1148 case PERF_RECORD_EXIT:
1149 ret = machine__process_exit_event(machine, event, sample); break;
1150 case PERF_RECORD_LOST:
1151 ret = machine__process_lost_event(machine, event, sample); break;
1160 static bool symbol__match_regex(struct symbol *sym, regex_t *regex)
1162 if (sym->name && !regexec(regex, sym->name, 0, NULL, 0))
1167 static const u8 cpumodes[] = {
1168 PERF_RECORD_MISC_USER,
1169 PERF_RECORD_MISC_KERNEL,
1170 PERF_RECORD_MISC_GUEST_USER,
1171 PERF_RECORD_MISC_GUEST_KERNEL
1173 #define NCPUMODES (sizeof(cpumodes)/sizeof(u8))
1175 static void ip__resolve_ams(struct machine *machine, struct thread *thread,
1176 struct addr_map_symbol *ams,
1179 struct addr_location al;
1183 memset(&al, 0, sizeof(al));
1185 for (i = 0; i < NCPUMODES; i++) {
1188 * We cannot use the header.misc hint to determine whether a
1189 * branch stack address is user, kernel, guest, hypervisor.
1190 * Branches may straddle the kernel/user/hypervisor boundaries.
1191 * Thus, we have to try consecutively until we find a match
1192 * or else, the symbol is unknown
1194 thread__find_addr_location(thread, machine, m, MAP__FUNCTION,
1201 ams->al_addr = al.addr;
1206 static void ip__resolve_data(struct machine *machine, struct thread *thread,
1207 u8 m, struct addr_map_symbol *ams, u64 addr)
1209 struct addr_location al;
1211 memset(&al, 0, sizeof(al));
1213 thread__find_addr_location(thread, machine, m, MAP__VARIABLE, addr,
1216 ams->al_addr = al.addr;
1221 struct mem_info *machine__resolve_mem(struct machine *machine,
1223 struct perf_sample *sample,
1226 struct mem_info *mi = zalloc(sizeof(*mi));
1231 ip__resolve_ams(machine, thr, &mi->iaddr, sample->ip);
1232 ip__resolve_data(machine, thr, cpumode, &mi->daddr, sample->addr);
1233 mi->data_src.val = sample->data_src;
1238 struct branch_info *machine__resolve_bstack(struct machine *machine,
1240 struct branch_stack *bs)
1242 struct branch_info *bi;
1245 bi = calloc(bs->nr, sizeof(struct branch_info));
1249 for (i = 0; i < bs->nr; i++) {
1250 ip__resolve_ams(machine, thr, &bi[i].to, bs->entries[i].to);
1251 ip__resolve_ams(machine, thr, &bi[i].from, bs->entries[i].from);
1252 bi[i].flags = bs->entries[i].flags;
1257 static int machine__resolve_callchain_sample(struct machine *machine,
1258 struct thread *thread,
1259 struct ip_callchain *chain,
1260 struct symbol **parent,
1261 struct addr_location *root_al,
1264 u8 cpumode = PERF_RECORD_MISC_USER;
1265 int chain_nr = min(max_stack, (int)chain->nr);
1269 callchain_cursor_reset(&callchain_cursor);
1271 if (chain->nr > PERF_MAX_STACK_DEPTH) {
1272 pr_warning("corrupted callchain. skipping...\n");
1276 for (i = 0; i < chain_nr; i++) {
1278 struct addr_location al;
1280 if (callchain_param.order == ORDER_CALLEE)
1283 ip = chain->ips[chain->nr - i - 1];
1285 if (ip >= PERF_CONTEXT_MAX) {
1287 case PERF_CONTEXT_HV:
1288 cpumode = PERF_RECORD_MISC_HYPERVISOR;
1290 case PERF_CONTEXT_KERNEL:
1291 cpumode = PERF_RECORD_MISC_KERNEL;
1293 case PERF_CONTEXT_USER:
1294 cpumode = PERF_RECORD_MISC_USER;
1297 pr_debug("invalid callchain context: "
1298 "%"PRId64"\n", (s64) ip);
1300 * It seems the callchain is corrupted.
1303 callchain_cursor_reset(&callchain_cursor);
1309 al.filtered = false;
1310 thread__find_addr_location(thread, machine, cpumode,
1311 MAP__FUNCTION, ip, &al);
1312 if (al.sym != NULL) {
1313 if (sort__has_parent && !*parent &&
1314 symbol__match_regex(al.sym, &parent_regex))
1316 else if (have_ignore_callees && root_al &&
1317 symbol__match_regex(al.sym, &ignore_callees_regex)) {
1318 /* Treat this symbol as the root,
1319 forgetting its callees. */
1321 callchain_cursor_reset(&callchain_cursor);
1323 if (!symbol_conf.use_callchain)
1327 err = callchain_cursor_append(&callchain_cursor,
1328 ip, al.map, al.sym);
1336 static int unwind_entry(struct unwind_entry *entry, void *arg)
1338 struct callchain_cursor *cursor = arg;
1339 return callchain_cursor_append(cursor, entry->ip,
1340 entry->map, entry->sym);
1343 int machine__resolve_callchain(struct machine *machine,
1344 struct perf_evsel *evsel,
1345 struct thread *thread,
1346 struct perf_sample *sample,
1347 struct symbol **parent,
1348 struct addr_location *root_al,
1353 ret = machine__resolve_callchain_sample(machine, thread,
1354 sample->callchain, parent,
1355 root_al, max_stack);
1359 /* Can we do dwarf post unwind? */
1360 if (!((evsel->attr.sample_type & PERF_SAMPLE_REGS_USER) &&
1361 (evsel->attr.sample_type & PERF_SAMPLE_STACK_USER)))
1364 /* Bail out if nothing was captured. */
1365 if ((!sample->user_regs.regs) ||
1366 (!sample->user_stack.size))
1369 return unwind__get_entries(unwind_entry, &callchain_cursor, machine,
1370 thread, evsel->attr.sample_regs_user,
1375 int machine__for_each_thread(struct machine *machine,
1376 int (*fn)(struct thread *thread, void *p),
1380 struct thread *thread;
1383 for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) {
1384 thread = rb_entry(nd, struct thread, rb_node);
1385 rc = fn(thread, priv);
1390 list_for_each_entry(thread, &machine->dead_threads, node) {
1391 rc = fn(thread, priv);
1398 int machine__synthesize_threads(struct machine *machine, struct perf_tool *tool,
1399 struct perf_target *target, struct thread_map *threads,
1400 perf_event__handler_t process, bool data_mmap)
1402 if (perf_target__has_task(target))
1403 return perf_event__synthesize_thread_map(tool, threads, process, machine, data_mmap);
1404 else if (perf_target__has_cpu(target))
1405 return perf_event__synthesize_threads(tool, process, machine, data_mmap);
1406 /* command specified */