13 #include <symbol/kallsyms.h>
15 #include "linux/hash.h"
17 static void __machine__remove_thread(struct machine *machine, struct thread *th, bool lock);
19 static void dsos__init(struct dsos *dsos)
21 INIT_LIST_HEAD(&dsos->head);
23 pthread_rwlock_init(&dsos->lock, NULL);
26 int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
28 memset(machine, 0, sizeof(*machine));
29 map_groups__init(&machine->kmaps, machine);
30 RB_CLEAR_NODE(&machine->rb_node);
31 dsos__init(&machine->dsos);
33 machine->threads = RB_ROOT;
34 pthread_rwlock_init(&machine->threads_lock, NULL);
35 machine->nr_threads = 0;
36 INIT_LIST_HEAD(&machine->dead_threads);
37 machine->last_match = NULL;
39 machine->vdso_info = NULL;
44 machine->symbol_filter = NULL;
45 machine->id_hdr_size = 0;
46 machine->comm_exec = false;
47 machine->kernel_start = 0;
49 memset(machine->vmlinux_maps, 0, sizeof(machine->vmlinux_maps));
51 machine->root_dir = strdup(root_dir);
52 if (machine->root_dir == NULL)
55 if (pid != HOST_KERNEL_ID) {
56 struct thread *thread = machine__findnew_thread(machine, -1,
63 snprintf(comm, sizeof(comm), "[guest/%d]", pid);
64 thread__set_comm(thread, comm, 0);
68 machine->current_tid = NULL;
73 struct machine *machine__new_host(void)
75 struct machine *machine = malloc(sizeof(*machine));
77 if (machine != NULL) {
78 machine__init(machine, "", HOST_KERNEL_ID);
80 if (machine__create_kernel_maps(machine) < 0)
90 static void dsos__purge(struct dsos *dsos)
94 pthread_rwlock_wrlock(&dsos->lock);
96 list_for_each_entry_safe(pos, n, &dsos->head, node) {
97 RB_CLEAR_NODE(&pos->rb_node);
99 list_del_init(&pos->node);
103 pthread_rwlock_unlock(&dsos->lock);
106 static void dsos__exit(struct dsos *dsos)
109 pthread_rwlock_destroy(&dsos->lock);
112 void machine__delete_threads(struct machine *machine)
116 pthread_rwlock_wrlock(&machine->threads_lock);
117 nd = rb_first(&machine->threads);
119 struct thread *t = rb_entry(nd, struct thread, rb_node);
122 __machine__remove_thread(machine, t, false);
124 pthread_rwlock_unlock(&machine->threads_lock);
127 void machine__exit(struct machine *machine)
129 machine__destroy_kernel_maps(machine);
130 map_groups__exit(&machine->kmaps);
131 dsos__exit(&machine->dsos);
132 machine__exit_vdso(machine);
133 zfree(&machine->root_dir);
134 zfree(&machine->current_tid);
135 pthread_rwlock_destroy(&machine->threads_lock);
138 void machine__delete(struct machine *machine)
140 machine__exit(machine);
144 void machines__init(struct machines *machines)
146 machine__init(&machines->host, "", HOST_KERNEL_ID);
147 machines->guests = RB_ROOT;
148 machines->symbol_filter = NULL;
151 void machines__exit(struct machines *machines)
153 machine__exit(&machines->host);
157 struct machine *machines__add(struct machines *machines, pid_t pid,
158 const char *root_dir)
160 struct rb_node **p = &machines->guests.rb_node;
161 struct rb_node *parent = NULL;
162 struct machine *pos, *machine = malloc(sizeof(*machine));
167 if (machine__init(machine, root_dir, pid) != 0) {
172 machine->symbol_filter = machines->symbol_filter;
176 pos = rb_entry(parent, struct machine, rb_node);
183 rb_link_node(&machine->rb_node, parent, p);
184 rb_insert_color(&machine->rb_node, &machines->guests);
189 void machines__set_symbol_filter(struct machines *machines,
190 symbol_filter_t symbol_filter)
194 machines->symbol_filter = symbol_filter;
195 machines->host.symbol_filter = symbol_filter;
197 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
198 struct machine *machine = rb_entry(nd, struct machine, rb_node);
200 machine->symbol_filter = symbol_filter;
204 void machines__set_comm_exec(struct machines *machines, bool comm_exec)
208 machines->host.comm_exec = comm_exec;
210 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
211 struct machine *machine = rb_entry(nd, struct machine, rb_node);
213 machine->comm_exec = comm_exec;
217 struct machine *machines__find(struct machines *machines, pid_t pid)
219 struct rb_node **p = &machines->guests.rb_node;
220 struct rb_node *parent = NULL;
221 struct machine *machine;
222 struct machine *default_machine = NULL;
224 if (pid == HOST_KERNEL_ID)
225 return &machines->host;
229 machine = rb_entry(parent, struct machine, rb_node);
230 if (pid < machine->pid)
232 else if (pid > machine->pid)
237 default_machine = machine;
240 return default_machine;
243 struct machine *machines__findnew(struct machines *machines, pid_t pid)
246 const char *root_dir = "";
247 struct machine *machine = machines__find(machines, pid);
249 if (machine && (machine->pid == pid))
252 if ((pid != HOST_KERNEL_ID) &&
253 (pid != DEFAULT_GUEST_KERNEL_ID) &&
254 (symbol_conf.guestmount)) {
255 sprintf(path, "%s/%d", symbol_conf.guestmount, pid);
256 if (access(path, R_OK)) {
257 static struct strlist *seen;
260 seen = strlist__new(NULL, NULL);
262 if (!strlist__has_entry(seen, path)) {
263 pr_err("Can't access file %s\n", path);
264 strlist__add(seen, path);
272 machine = machines__add(machines, pid, root_dir);
277 void machines__process_guests(struct machines *machines,
278 machine__process_t process, void *data)
282 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
283 struct machine *pos = rb_entry(nd, struct machine, rb_node);
288 char *machine__mmap_name(struct machine *machine, char *bf, size_t size)
290 if (machine__is_host(machine))
291 snprintf(bf, size, "[%s]", "kernel.kallsyms");
292 else if (machine__is_default_guest(machine))
293 snprintf(bf, size, "[%s]", "guest.kernel.kallsyms");
295 snprintf(bf, size, "[%s.%d]", "guest.kernel.kallsyms",
302 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size)
304 struct rb_node *node;
305 struct machine *machine;
307 machines->host.id_hdr_size = id_hdr_size;
309 for (node = rb_first(&machines->guests); node; node = rb_next(node)) {
310 machine = rb_entry(node, struct machine, rb_node);
311 machine->id_hdr_size = id_hdr_size;
317 static void machine__update_thread_pid(struct machine *machine,
318 struct thread *th, pid_t pid)
320 struct thread *leader;
322 if (pid == th->pid_ || pid == -1 || th->pid_ != -1)
327 if (th->pid_ == th->tid)
330 leader = __machine__findnew_thread(machine, th->pid_, th->pid_);
335 leader->mg = map_groups__new(machine);
340 if (th->mg == leader->mg)
345 * Maps are created from MMAP events which provide the pid and
346 * tid. Consequently there never should be any maps on a thread
347 * with an unknown pid. Just print an error if there are.
349 if (!map_groups__empty(th->mg))
350 pr_err("Discarding thread maps for %d:%d\n",
352 map_groups__put(th->mg);
355 th->mg = map_groups__get(leader->mg);
360 pr_err("Failed to join map groups for %d:%d\n", th->pid_, th->tid);
365 * Caller must eventually drop thread->refcnt returned with a successful
366 * lookup/new thread inserted.
368 static struct thread *____machine__findnew_thread(struct machine *machine,
369 pid_t pid, pid_t tid,
372 struct rb_node **p = &machine->threads.rb_node;
373 struct rb_node *parent = NULL;
377 * Front-end cache - TID lookups come in blocks,
378 * so most of the time we dont have to look up
381 th = machine->last_match;
383 if (th->tid == tid) {
384 machine__update_thread_pid(machine, th, pid);
385 return thread__get(th);
388 machine->last_match = NULL;
393 th = rb_entry(parent, struct thread, rb_node);
395 if (th->tid == tid) {
396 machine->last_match = th;
397 machine__update_thread_pid(machine, th, pid);
398 return thread__get(th);
410 th = thread__new(pid, tid);
412 rb_link_node(&th->rb_node, parent, p);
413 rb_insert_color(&th->rb_node, &machine->threads);
416 * We have to initialize map_groups separately
417 * after rb tree is updated.
419 * The reason is that we call machine__findnew_thread
420 * within thread__init_map_groups to find the thread
421 * leader and that would screwed the rb tree.
423 if (thread__init_map_groups(th, machine)) {
424 rb_erase_init(&th->rb_node, &machine->threads);
425 RB_CLEAR_NODE(&th->rb_node);
430 * It is now in the rbtree, get a ref
433 machine->last_match = th;
434 ++machine->nr_threads;
440 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid)
442 return ____machine__findnew_thread(machine, pid, tid, true);
445 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid,
450 pthread_rwlock_wrlock(&machine->threads_lock);
451 th = __machine__findnew_thread(machine, pid, tid);
452 pthread_rwlock_unlock(&machine->threads_lock);
456 struct thread *machine__find_thread(struct machine *machine, pid_t pid,
460 pthread_rwlock_rdlock(&machine->threads_lock);
461 th = ____machine__findnew_thread(machine, pid, tid, false);
462 pthread_rwlock_unlock(&machine->threads_lock);
466 struct comm *machine__thread_exec_comm(struct machine *machine,
467 struct thread *thread)
469 if (machine->comm_exec)
470 return thread__exec_comm(thread);
472 return thread__comm(thread);
475 int machine__process_comm_event(struct machine *machine, union perf_event *event,
476 struct perf_sample *sample)
478 struct thread *thread = machine__findnew_thread(machine,
481 bool exec = event->header.misc & PERF_RECORD_MISC_COMM_EXEC;
485 machine->comm_exec = true;
488 perf_event__fprintf_comm(event, stdout);
490 if (thread == NULL ||
491 __thread__set_comm(thread, event->comm.comm, sample->time, exec)) {
492 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
501 int machine__process_lost_event(struct machine *machine __maybe_unused,
502 union perf_event *event, struct perf_sample *sample __maybe_unused)
504 dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n",
505 event->lost.id, event->lost.lost);
509 int machine__process_lost_samples_event(struct machine *machine __maybe_unused,
510 union perf_event *event, struct perf_sample *sample)
512 dump_printf(": id:%" PRIu64 ": lost samples :%" PRIu64 "\n",
513 sample->id, event->lost_samples.lost);
517 static struct dso *machine__findnew_module_dso(struct machine *machine,
519 const char *filename)
523 pthread_rwlock_wrlock(&machine->dsos.lock);
525 dso = __dsos__find(&machine->dsos, m->name, true);
527 dso = __dsos__addnew(&machine->dsos, m->name);
531 if (machine__is_host(machine))
532 dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE;
534 dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE;
536 /* _KMODULE_COMP should be next to _KMODULE */
537 if (m->kmod && m->comp)
540 dso__set_short_name(dso, strdup(m->name), true);
541 dso__set_long_name(dso, strdup(filename), true);
546 pthread_rwlock_unlock(&machine->dsos.lock);
550 int machine__process_aux_event(struct machine *machine __maybe_unused,
551 union perf_event *event)
554 perf_event__fprintf_aux(event, stdout);
558 int machine__process_itrace_start_event(struct machine *machine __maybe_unused,
559 union perf_event *event)
562 perf_event__fprintf_itrace_start(event, stdout);
566 int machine__process_switch_event(struct machine *machine __maybe_unused,
567 union perf_event *event)
570 perf_event__fprintf_switch(event, stdout);
574 static void dso__adjust_kmod_long_name(struct dso *dso, const char *filename)
576 const char *dup_filename;
578 if (!filename || !dso || !dso->long_name)
580 if (dso->long_name[0] != '[')
582 if (!strchr(filename, '/'))
585 dup_filename = strdup(filename);
589 dso__set_long_name(dso, dup_filename, true);
592 struct map *machine__findnew_module_map(struct machine *machine, u64 start,
593 const char *filename)
595 struct map *map = NULL;
596 struct dso *dso = NULL;
599 if (kmod_path__parse_name(&m, filename))
602 map = map_groups__find_by_name(&machine->kmaps, MAP__FUNCTION,
606 * If the map's dso is an offline module, give dso__load()
607 * a chance to find the file path of that module by fixing
610 dso__adjust_kmod_long_name(map->dso, filename);
614 dso = machine__findnew_module_dso(machine, &m, filename);
618 map = map__new2(start, dso, MAP__FUNCTION);
622 map_groups__insert(&machine->kmaps, map);
624 /* Put the map here because map_groups__insert alread got it */
627 /* put the dso here, corresponding to machine__findnew_module_dso */
633 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp)
636 size_t ret = __dsos__fprintf(&machines->host.dsos.head, fp);
638 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
639 struct machine *pos = rb_entry(nd, struct machine, rb_node);
640 ret += __dsos__fprintf(&pos->dsos.head, fp);
646 size_t machine__fprintf_dsos_buildid(struct machine *m, FILE *fp,
647 bool (skip)(struct dso *dso, int parm), int parm)
649 return __dsos__fprintf_buildid(&m->dsos.head, fp, skip, parm);
652 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp,
653 bool (skip)(struct dso *dso, int parm), int parm)
656 size_t ret = machine__fprintf_dsos_buildid(&machines->host, fp, skip, parm);
658 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
659 struct machine *pos = rb_entry(nd, struct machine, rb_node);
660 ret += machine__fprintf_dsos_buildid(pos, fp, skip, parm);
665 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp)
669 struct dso *kdso = machine__kernel_map(machine)->dso;
671 if (kdso->has_build_id) {
672 char filename[PATH_MAX];
673 if (dso__build_id_filename(kdso, filename, sizeof(filename)))
674 printed += fprintf(fp, "[0] %s\n", filename);
677 for (i = 0; i < vmlinux_path__nr_entries; ++i)
678 printed += fprintf(fp, "[%d] %s\n",
679 i + kdso->has_build_id, vmlinux_path[i]);
684 size_t machine__fprintf(struct machine *machine, FILE *fp)
689 pthread_rwlock_rdlock(&machine->threads_lock);
691 ret = fprintf(fp, "Threads: %u\n", machine->nr_threads);
693 for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) {
694 struct thread *pos = rb_entry(nd, struct thread, rb_node);
696 ret += thread__fprintf(pos, fp);
699 pthread_rwlock_unlock(&machine->threads_lock);
704 static struct dso *machine__get_kernel(struct machine *machine)
706 const char *vmlinux_name = NULL;
709 if (machine__is_host(machine)) {
710 vmlinux_name = symbol_conf.vmlinux_name;
712 vmlinux_name = "[kernel.kallsyms]";
714 kernel = machine__findnew_kernel(machine, vmlinux_name,
715 "[kernel]", DSO_TYPE_KERNEL);
719 if (machine__is_default_guest(machine))
720 vmlinux_name = symbol_conf.default_guest_vmlinux_name;
722 vmlinux_name = machine__mmap_name(machine, bf,
725 kernel = machine__findnew_kernel(machine, vmlinux_name,
727 DSO_TYPE_GUEST_KERNEL);
730 if (kernel != NULL && (!kernel->has_build_id))
731 dso__read_running_kernel_build_id(kernel, machine);
736 struct process_args {
740 static void machine__get_kallsyms_filename(struct machine *machine, char *buf,
743 if (machine__is_default_guest(machine))
744 scnprintf(buf, bufsz, "%s", symbol_conf.default_guest_kallsyms);
746 scnprintf(buf, bufsz, "%s/proc/kallsyms", machine->root_dir);
749 const char *ref_reloc_sym_names[] = {"_text", "_stext", NULL};
751 /* Figure out the start address of kernel map from /proc/kallsyms.
752 * Returns the name of the start symbol in *symbol_name. Pass in NULL as
753 * symbol_name if it's not that important.
755 static u64 machine__get_running_kernel_start(struct machine *machine,
756 const char **symbol_name)
758 char filename[PATH_MAX];
763 machine__get_kallsyms_filename(machine, filename, PATH_MAX);
765 if (symbol__restricted_filename(filename, "/proc/kallsyms"))
768 for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) {
769 addr = kallsyms__get_function_start(filename, name);
780 int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel)
783 u64 start = machine__get_running_kernel_start(machine, NULL);
785 /* In case of renewal the kernel map, destroy previous one */
786 machine__destroy_kernel_maps(machine);
788 for (type = 0; type < MAP__NR_TYPES; ++type) {
792 machine->vmlinux_maps[type] = map__new2(start, kernel, type);
793 if (machine->vmlinux_maps[type] == NULL)
796 machine->vmlinux_maps[type]->map_ip =
797 machine->vmlinux_maps[type]->unmap_ip =
799 map = __machine__kernel_map(machine, type);
800 kmap = map__kmap(map);
804 kmap->kmaps = &machine->kmaps;
805 map_groups__insert(&machine->kmaps, map);
811 void machine__destroy_kernel_maps(struct machine *machine)
815 for (type = 0; type < MAP__NR_TYPES; ++type) {
817 struct map *map = __machine__kernel_map(machine, type);
822 kmap = map__kmap(map);
823 map_groups__remove(&machine->kmaps, map);
824 if (kmap && kmap->ref_reloc_sym) {
826 * ref_reloc_sym is shared among all maps, so free just
829 if (type == MAP__FUNCTION) {
830 zfree((char **)&kmap->ref_reloc_sym->name);
831 zfree(&kmap->ref_reloc_sym);
833 kmap->ref_reloc_sym = NULL;
836 map__put(machine->vmlinux_maps[type]);
837 machine->vmlinux_maps[type] = NULL;
841 int machines__create_guest_kernel_maps(struct machines *machines)
844 struct dirent **namelist = NULL;
850 if (symbol_conf.default_guest_vmlinux_name ||
851 symbol_conf.default_guest_modules ||
852 symbol_conf.default_guest_kallsyms) {
853 machines__create_kernel_maps(machines, DEFAULT_GUEST_KERNEL_ID);
856 if (symbol_conf.guestmount) {
857 items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL);
860 for (i = 0; i < items; i++) {
861 if (!isdigit(namelist[i]->d_name[0])) {
862 /* Filter out . and .. */
865 pid = (pid_t)strtol(namelist[i]->d_name, &endp, 10);
866 if ((*endp != '\0') ||
867 (endp == namelist[i]->d_name) ||
869 pr_debug("invalid directory (%s). Skipping.\n",
870 namelist[i]->d_name);
873 sprintf(path, "%s/%s/proc/kallsyms",
874 symbol_conf.guestmount,
875 namelist[i]->d_name);
876 ret = access(path, R_OK);
878 pr_debug("Can't access file %s\n", path);
881 machines__create_kernel_maps(machines, pid);
890 void machines__destroy_kernel_maps(struct machines *machines)
892 struct rb_node *next = rb_first(&machines->guests);
894 machine__destroy_kernel_maps(&machines->host);
897 struct machine *pos = rb_entry(next, struct machine, rb_node);
899 next = rb_next(&pos->rb_node);
900 rb_erase(&pos->rb_node, &machines->guests);
901 machine__delete(pos);
905 int machines__create_kernel_maps(struct machines *machines, pid_t pid)
907 struct machine *machine = machines__findnew(machines, pid);
912 return machine__create_kernel_maps(machine);
915 int __machine__load_kallsyms(struct machine *machine, const char *filename,
916 enum map_type type, bool no_kcore, symbol_filter_t filter)
918 struct map *map = machine__kernel_map(machine);
919 int ret = __dso__load_kallsyms(map->dso, filename, map, no_kcore, filter);
922 dso__set_loaded(map->dso, type);
924 * Since /proc/kallsyms will have multiple sessions for the
925 * kernel, with modules between them, fixup the end of all
928 __map_groups__fixup_end(&machine->kmaps, type);
934 int machine__load_kallsyms(struct machine *machine, const char *filename,
935 enum map_type type, symbol_filter_t filter)
937 return __machine__load_kallsyms(machine, filename, type, false, filter);
940 int machine__load_vmlinux_path(struct machine *machine, enum map_type type,
941 symbol_filter_t filter)
943 struct map *map = machine__kernel_map(machine);
944 int ret = dso__load_vmlinux_path(map->dso, map, filter);
947 dso__set_loaded(map->dso, type);
952 static void map_groups__fixup_end(struct map_groups *mg)
955 for (i = 0; i < MAP__NR_TYPES; ++i)
956 __map_groups__fixup_end(mg, i);
959 static char *get_kernel_version(const char *root_dir)
961 char version[PATH_MAX];
964 const char *prefix = "Linux version ";
966 sprintf(version, "%s/proc/version", root_dir);
967 file = fopen(version, "r");
972 tmp = fgets(version, sizeof(version), file);
975 name = strstr(version, prefix);
978 name += strlen(prefix);
979 tmp = strchr(name, ' ');
986 static bool is_kmod_dso(struct dso *dso)
988 return dso->symtab_type == DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE ||
989 dso->symtab_type == DSO_BINARY_TYPE__GUEST_KMODULE;
992 static int map_groups__set_module_path(struct map_groups *mg, const char *path,
998 map = map_groups__find_by_name(mg, MAP__FUNCTION, m->name);
1002 long_name = strdup(path);
1003 if (long_name == NULL)
1006 dso__set_long_name(map->dso, long_name, true);
1007 dso__kernel_module_get_build_id(map->dso, "");
1010 * Full name could reveal us kmod compression, so
1011 * we need to update the symtab_type if needed.
1013 if (m->comp && is_kmod_dso(map->dso))
1014 map->dso->symtab_type++;
1019 static int map_groups__set_modules_path_dir(struct map_groups *mg,
1020 const char *dir_name, int depth)
1022 struct dirent *dent;
1023 DIR *dir = opendir(dir_name);
1027 pr_debug("%s: cannot open %s dir\n", __func__, dir_name);
1031 while ((dent = readdir(dir)) != NULL) {
1032 char path[PATH_MAX];
1035 /*sshfs might return bad dent->d_type, so we have to stat*/
1036 snprintf(path, sizeof(path), "%s/%s", dir_name, dent->d_name);
1037 if (stat(path, &st))
1040 if (S_ISDIR(st.st_mode)) {
1041 if (!strcmp(dent->d_name, ".") ||
1042 !strcmp(dent->d_name, ".."))
1045 /* Do not follow top-level source and build symlinks */
1047 if (!strcmp(dent->d_name, "source") ||
1048 !strcmp(dent->d_name, "build"))
1052 ret = map_groups__set_modules_path_dir(mg, path,
1059 ret = kmod_path__parse_name(&m, dent->d_name);
1064 ret = map_groups__set_module_path(mg, path, &m);
1078 static int machine__set_modules_path(struct machine *machine)
1081 char modules_path[PATH_MAX];
1083 version = get_kernel_version(machine->root_dir);
1087 snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s",
1088 machine->root_dir, version);
1091 return map_groups__set_modules_path_dir(&machine->kmaps, modules_path, 0);
1094 static int machine__create_module(void *arg, const char *name, u64 start)
1096 struct machine *machine = arg;
1099 map = machine__findnew_module_map(machine, start, name);
1103 dso__kernel_module_get_build_id(map->dso, machine->root_dir);
1108 static int machine__create_modules(struct machine *machine)
1110 const char *modules;
1111 char path[PATH_MAX];
1113 if (machine__is_default_guest(machine)) {
1114 modules = symbol_conf.default_guest_modules;
1116 snprintf(path, PATH_MAX, "%s/proc/modules", machine->root_dir);
1120 if (symbol__restricted_filename(modules, "/proc/modules"))
1123 if (modules__parse(modules, machine, machine__create_module))
1126 if (!machine__set_modules_path(machine))
1129 pr_debug("Problems setting modules path maps, continuing anyway...\n");
1134 int machine__create_kernel_maps(struct machine *machine)
1136 struct dso *kernel = machine__get_kernel(machine);
1138 u64 addr = machine__get_running_kernel_start(machine, &name);
1141 if (!addr || kernel == NULL)
1144 ret = __machine__create_kernel_maps(machine, kernel);
1149 if (symbol_conf.use_modules && machine__create_modules(machine) < 0) {
1150 if (machine__is_host(machine))
1151 pr_debug("Problems creating module maps, "
1152 "continuing anyway...\n");
1154 pr_debug("Problems creating module maps for guest %d, "
1155 "continuing anyway...\n", machine->pid);
1159 * Now that we have all the maps created, just set the ->end of them:
1161 map_groups__fixup_end(&machine->kmaps);
1163 if (maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, name,
1165 machine__destroy_kernel_maps(machine);
1172 static void machine__set_kernel_mmap_len(struct machine *machine,
1173 union perf_event *event)
1177 for (i = 0; i < MAP__NR_TYPES; i++) {
1178 machine->vmlinux_maps[i]->start = event->mmap.start;
1179 machine->vmlinux_maps[i]->end = (event->mmap.start +
1182 * Be a bit paranoid here, some perf.data file came with
1183 * a zero sized synthesized MMAP event for the kernel.
1185 if (machine->vmlinux_maps[i]->end == 0)
1186 machine->vmlinux_maps[i]->end = ~0ULL;
1190 static bool machine__uses_kcore(struct machine *machine)
1194 list_for_each_entry(dso, &machine->dsos.head, node) {
1195 if (dso__is_kcore(dso))
1202 static int machine__process_kernel_mmap_event(struct machine *machine,
1203 union perf_event *event)
1206 char kmmap_prefix[PATH_MAX];
1207 enum dso_kernel_type kernel_type;
1208 bool is_kernel_mmap;
1210 /* If we have maps from kcore then we do not need or want any others */
1211 if (machine__uses_kcore(machine))
1214 machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix));
1215 if (machine__is_host(machine))
1216 kernel_type = DSO_TYPE_KERNEL;
1218 kernel_type = DSO_TYPE_GUEST_KERNEL;
1220 is_kernel_mmap = memcmp(event->mmap.filename,
1222 strlen(kmmap_prefix) - 1) == 0;
1223 if (event->mmap.filename[0] == '/' ||
1224 (!is_kernel_mmap && event->mmap.filename[0] == '[')) {
1225 map = machine__findnew_module_map(machine, event->mmap.start,
1226 event->mmap.filename);
1230 map->end = map->start + event->mmap.len;
1231 } else if (is_kernel_mmap) {
1232 const char *symbol_name = (event->mmap.filename +
1233 strlen(kmmap_prefix));
1235 * Should be there already, from the build-id table in
1238 struct dso *kernel = NULL;
1241 pthread_rwlock_rdlock(&machine->dsos.lock);
1243 list_for_each_entry(dso, &machine->dsos.head, node) {
1246 * The cpumode passed to is_kernel_module is not the
1247 * cpumode of *this* event. If we insist on passing
1248 * correct cpumode to is_kernel_module, we should
1249 * record the cpumode when we adding this dso to the
1252 * However we don't really need passing correct
1253 * cpumode. We know the correct cpumode must be kernel
1254 * mode (if not, we should not link it onto kernel_dsos
1257 * Therefore, we pass PERF_RECORD_MISC_CPUMODE_UNKNOWN.
1258 * is_kernel_module() treats it as a kernel cpumode.
1262 is_kernel_module(dso->long_name,
1263 PERF_RECORD_MISC_CPUMODE_UNKNOWN))
1271 pthread_rwlock_unlock(&machine->dsos.lock);
1274 kernel = machine__findnew_dso(machine, kmmap_prefix);
1278 kernel->kernel = kernel_type;
1279 if (__machine__create_kernel_maps(machine, kernel) < 0) {
1284 if (strstr(kernel->long_name, "vmlinux"))
1285 dso__set_short_name(kernel, "[kernel.vmlinux]", false);
1287 machine__set_kernel_mmap_len(machine, event);
1290 * Avoid using a zero address (kptr_restrict) for the ref reloc
1291 * symbol. Effectively having zero here means that at record
1292 * time /proc/sys/kernel/kptr_restrict was non zero.
1294 if (event->mmap.pgoff != 0) {
1295 maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps,
1300 if (machine__is_default_guest(machine)) {
1302 * preload dso of guest kernel and modules
1304 dso__load(kernel, machine__kernel_map(machine), NULL);
1312 int machine__process_mmap2_event(struct machine *machine,
1313 union perf_event *event,
1314 struct perf_sample *sample)
1316 struct thread *thread;
1322 perf_event__fprintf_mmap2(event, stdout);
1324 if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
1325 sample->cpumode == PERF_RECORD_MISC_KERNEL) {
1326 ret = machine__process_kernel_mmap_event(machine, event);
1332 thread = machine__findnew_thread(machine, event->mmap2.pid,
1337 if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA)
1338 type = MAP__VARIABLE;
1340 type = MAP__FUNCTION;
1342 map = map__new(machine, event->mmap2.start,
1343 event->mmap2.len, event->mmap2.pgoff,
1344 event->mmap2.pid, event->mmap2.maj,
1345 event->mmap2.min, event->mmap2.ino,
1346 event->mmap2.ino_generation,
1349 event->mmap2.filename, type, thread);
1352 goto out_problem_map;
1354 thread__insert_map(thread, map);
1355 thread__put(thread);
1360 thread__put(thread);
1362 dump_printf("problem processing PERF_RECORD_MMAP2, skipping event.\n");
1366 int machine__process_mmap_event(struct machine *machine, union perf_event *event,
1367 struct perf_sample *sample)
1369 struct thread *thread;
1375 perf_event__fprintf_mmap(event, stdout);
1377 if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
1378 sample->cpumode == PERF_RECORD_MISC_KERNEL) {
1379 ret = machine__process_kernel_mmap_event(machine, event);
1385 thread = machine__findnew_thread(machine, event->mmap.pid,
1390 if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA)
1391 type = MAP__VARIABLE;
1393 type = MAP__FUNCTION;
1395 map = map__new(machine, event->mmap.start,
1396 event->mmap.len, event->mmap.pgoff,
1397 event->mmap.pid, 0, 0, 0, 0, 0, 0,
1398 event->mmap.filename,
1402 goto out_problem_map;
1404 thread__insert_map(thread, map);
1405 thread__put(thread);
1410 thread__put(thread);
1412 dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n");
1416 static void __machine__remove_thread(struct machine *machine, struct thread *th, bool lock)
1418 if (machine->last_match == th)
1419 machine->last_match = NULL;
1421 BUG_ON(atomic_read(&th->refcnt) == 0);
1423 pthread_rwlock_wrlock(&machine->threads_lock);
1424 rb_erase_init(&th->rb_node, &machine->threads);
1425 RB_CLEAR_NODE(&th->rb_node);
1426 --machine->nr_threads;
1428 * Move it first to the dead_threads list, then drop the reference,
1429 * if this is the last reference, then the thread__delete destructor
1430 * will be called and we will remove it from the dead_threads list.
1432 list_add_tail(&th->node, &machine->dead_threads);
1434 pthread_rwlock_unlock(&machine->threads_lock);
1438 void machine__remove_thread(struct machine *machine, struct thread *th)
1440 return __machine__remove_thread(machine, th, true);
1443 int machine__process_fork_event(struct machine *machine, union perf_event *event,
1444 struct perf_sample *sample)
1446 struct thread *thread = machine__find_thread(machine,
1449 struct thread *parent = machine__findnew_thread(machine,
1455 perf_event__fprintf_task(event, stdout);
1458 * There may be an existing thread that is not actually the parent,
1459 * either because we are processing events out of order, or because the
1460 * (fork) event that would have removed the thread was lost. Assume the
1461 * latter case and continue on as best we can.
1463 if (parent->pid_ != (pid_t)event->fork.ppid) {
1464 dump_printf("removing erroneous parent thread %d/%d\n",
1465 parent->pid_, parent->tid);
1466 machine__remove_thread(machine, parent);
1467 thread__put(parent);
1468 parent = machine__findnew_thread(machine, event->fork.ppid,
1472 /* if a thread currently exists for the thread id remove it */
1473 if (thread != NULL) {
1474 machine__remove_thread(machine, thread);
1475 thread__put(thread);
1478 thread = machine__findnew_thread(machine, event->fork.pid,
1481 if (thread == NULL || parent == NULL ||
1482 thread__fork(thread, parent, sample->time) < 0) {
1483 dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
1486 thread__put(thread);
1487 thread__put(parent);
1492 int machine__process_exit_event(struct machine *machine, union perf_event *event,
1493 struct perf_sample *sample __maybe_unused)
1495 struct thread *thread = machine__find_thread(machine,
1500 perf_event__fprintf_task(event, stdout);
1502 if (thread != NULL) {
1503 thread__exited(thread);
1504 thread__put(thread);
1510 int machine__process_event(struct machine *machine, union perf_event *event,
1511 struct perf_sample *sample)
1515 switch (event->header.type) {
1516 case PERF_RECORD_COMM:
1517 ret = machine__process_comm_event(machine, event, sample); break;
1518 case PERF_RECORD_MMAP:
1519 ret = machine__process_mmap_event(machine, event, sample); break;
1520 case PERF_RECORD_MMAP2:
1521 ret = machine__process_mmap2_event(machine, event, sample); break;
1522 case PERF_RECORD_FORK:
1523 ret = machine__process_fork_event(machine, event, sample); break;
1524 case PERF_RECORD_EXIT:
1525 ret = machine__process_exit_event(machine, event, sample); break;
1526 case PERF_RECORD_LOST:
1527 ret = machine__process_lost_event(machine, event, sample); break;
1528 case PERF_RECORD_AUX:
1529 ret = machine__process_aux_event(machine, event); break;
1530 case PERF_RECORD_ITRACE_START:
1531 ret = machine__process_itrace_start_event(machine, event); break;
1532 case PERF_RECORD_LOST_SAMPLES:
1533 ret = machine__process_lost_samples_event(machine, event, sample); break;
1534 case PERF_RECORD_SWITCH:
1535 case PERF_RECORD_SWITCH_CPU_WIDE:
1536 ret = machine__process_switch_event(machine, event); break;
1545 static bool symbol__match_regex(struct symbol *sym, regex_t *regex)
1547 if (sym->name && !regexec(regex, sym->name, 0, NULL, 0))
1552 static void ip__resolve_ams(struct thread *thread,
1553 struct addr_map_symbol *ams,
1556 struct addr_location al;
1558 memset(&al, 0, sizeof(al));
1560 * We cannot use the header.misc hint to determine whether a
1561 * branch stack address is user, kernel, guest, hypervisor.
1562 * Branches may straddle the kernel/user/hypervisor boundaries.
1563 * Thus, we have to try consecutively until we find a match
1564 * or else, the symbol is unknown
1566 thread__find_cpumode_addr_location(thread, MAP__FUNCTION, ip, &al);
1569 ams->al_addr = al.addr;
1574 static void ip__resolve_data(struct thread *thread,
1575 u8 m, struct addr_map_symbol *ams, u64 addr)
1577 struct addr_location al;
1579 memset(&al, 0, sizeof(al));
1581 thread__find_addr_location(thread, m, MAP__VARIABLE, addr, &al);
1582 if (al.map == NULL) {
1584 * some shared data regions have execute bit set which puts
1585 * their mapping in the MAP__FUNCTION type array.
1586 * Check there as a fallback option before dropping the sample.
1588 thread__find_addr_location(thread, m, MAP__FUNCTION, addr, &al);
1592 ams->al_addr = al.addr;
1597 struct mem_info *sample__resolve_mem(struct perf_sample *sample,
1598 struct addr_location *al)
1600 struct mem_info *mi = zalloc(sizeof(*mi));
1605 ip__resolve_ams(al->thread, &mi->iaddr, sample->ip);
1606 ip__resolve_data(al->thread, al->cpumode, &mi->daddr, sample->addr);
1607 mi->data_src.val = sample->data_src;
1612 static int add_callchain_ip(struct thread *thread,
1613 struct callchain_cursor *cursor,
1614 struct symbol **parent,
1615 struct addr_location *root_al,
1619 struct addr_location al;
1624 thread__find_cpumode_addr_location(thread, MAP__FUNCTION,
1627 if (ip >= PERF_CONTEXT_MAX) {
1629 case PERF_CONTEXT_HV:
1630 *cpumode = PERF_RECORD_MISC_HYPERVISOR;
1632 case PERF_CONTEXT_KERNEL:
1633 *cpumode = PERF_RECORD_MISC_KERNEL;
1635 case PERF_CONTEXT_USER:
1636 *cpumode = PERF_RECORD_MISC_USER;
1639 pr_debug("invalid callchain context: "
1640 "%"PRId64"\n", (s64) ip);
1642 * It seems the callchain is corrupted.
1645 callchain_cursor_reset(cursor);
1650 thread__find_addr_location(thread, *cpumode, MAP__FUNCTION,
1654 if (al.sym != NULL) {
1655 if (perf_hpp_list.parent && !*parent &&
1656 symbol__match_regex(al.sym, &parent_regex))
1658 else if (have_ignore_callees && root_al &&
1659 symbol__match_regex(al.sym, &ignore_callees_regex)) {
1660 /* Treat this symbol as the root,
1661 forgetting its callees. */
1663 callchain_cursor_reset(cursor);
1667 if (symbol_conf.hide_unresolved && al.sym == NULL)
1669 return callchain_cursor_append(cursor, al.addr, al.map, al.sym);
1672 struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
1673 struct addr_location *al)
1676 const struct branch_stack *bs = sample->branch_stack;
1677 struct branch_info *bi = calloc(bs->nr, sizeof(struct branch_info));
1682 for (i = 0; i < bs->nr; i++) {
1683 ip__resolve_ams(al->thread, &bi[i].to, bs->entries[i].to);
1684 ip__resolve_ams(al->thread, &bi[i].from, bs->entries[i].from);
1685 bi[i].flags = bs->entries[i].flags;
1692 #define NO_ENTRY 0xff
1694 #define PERF_MAX_BRANCH_DEPTH 127
1697 static int remove_loops(struct branch_entry *l, int nr)
1700 unsigned char chash[CHASHSZ];
1702 memset(chash, NO_ENTRY, sizeof(chash));
1704 BUG_ON(PERF_MAX_BRANCH_DEPTH > 255);
1706 for (i = 0; i < nr; i++) {
1707 int h = hash_64(l[i].from, CHASHBITS) % CHASHSZ;
1709 /* no collision handling for now */
1710 if (chash[h] == NO_ENTRY) {
1712 } else if (l[chash[h]].from == l[i].from) {
1713 bool is_loop = true;
1714 /* check if it is a real loop */
1716 for (j = chash[h]; j < i && i + off < nr; j++, off++)
1717 if (l[j].from != l[i + off].from) {
1722 memmove(l + i, l + i + off,
1723 (nr - (i + off)) * sizeof(*l));
1732 * Recolve LBR callstack chain sample
1734 * 1 on success get LBR callchain information
1735 * 0 no available LBR callchain information, should try fp
1736 * negative error code on other errors.
1738 static int resolve_lbr_callchain_sample(struct thread *thread,
1739 struct callchain_cursor *cursor,
1740 struct perf_sample *sample,
1741 struct symbol **parent,
1742 struct addr_location *root_al,
1745 struct ip_callchain *chain = sample->callchain;
1746 int chain_nr = min(max_stack, (int)chain->nr);
1747 u8 cpumode = PERF_RECORD_MISC_USER;
1751 for (i = 0; i < chain_nr; i++) {
1752 if (chain->ips[i] == PERF_CONTEXT_USER)
1756 /* LBR only affects the user callchain */
1757 if (i != chain_nr) {
1758 struct branch_stack *lbr_stack = sample->branch_stack;
1759 int lbr_nr = lbr_stack->nr;
1761 * LBR callstack can only get user call chain.
1762 * The mix_chain_nr is kernel call chain
1763 * number plus LBR user call chain number.
1764 * i is kernel call chain number,
1765 * 1 is PERF_CONTEXT_USER,
1766 * lbr_nr + 1 is the user call chain number.
1767 * For details, please refer to the comments
1768 * in callchain__printf
1770 int mix_chain_nr = i + 1 + lbr_nr + 1;
1772 if (mix_chain_nr > (int)sysctl_perf_event_max_stack + PERF_MAX_BRANCH_DEPTH) {
1773 pr_warning("corrupted callchain. skipping...\n");
1777 for (j = 0; j < mix_chain_nr; j++) {
1778 if (callchain_param.order == ORDER_CALLEE) {
1782 ip = lbr_stack->entries[j - i - 2].from;
1784 ip = lbr_stack->entries[0].to;
1787 ip = lbr_stack->entries[lbr_nr - j - 1].from;
1788 else if (j > lbr_nr)
1789 ip = chain->ips[i + 1 - (j - lbr_nr)];
1791 ip = lbr_stack->entries[0].to;
1794 err = add_callchain_ip(thread, cursor, parent, root_al, &cpumode, ip);
1796 return (err < 0) ? err : 0;
1804 static int thread__resolve_callchain_sample(struct thread *thread,
1805 struct callchain_cursor *cursor,
1806 struct perf_evsel *evsel,
1807 struct perf_sample *sample,
1808 struct symbol **parent,
1809 struct addr_location *root_al,
1812 struct branch_stack *branch = sample->branch_stack;
1813 struct ip_callchain *chain = sample->callchain;
1814 int chain_nr = min(max_stack, (int)chain->nr);
1815 u8 cpumode = PERF_RECORD_MISC_USER;
1820 if (perf_evsel__has_branch_callstack(evsel)) {
1821 err = resolve_lbr_callchain_sample(thread, cursor, sample, parent,
1822 root_al, max_stack);
1824 return (err < 0) ? err : 0;
1828 * Based on DWARF debug information, some architectures skip
1829 * a callchain entry saved by the kernel.
1831 if (chain->nr < sysctl_perf_event_max_stack)
1832 skip_idx = arch_skip_callchain_idx(thread, chain);
1835 * Add branches to call stack for easier browsing. This gives
1836 * more context for a sample than just the callers.
1838 * This uses individual histograms of paths compared to the
1839 * aggregated histograms the normal LBR mode uses.
1841 * Limitations for now:
1842 * - No extra filters
1843 * - No annotations (should annotate somehow)
1846 if (branch && callchain_param.branch_callstack) {
1847 int nr = min(max_stack, (int)branch->nr);
1848 struct branch_entry be[nr];
1850 if (branch->nr > PERF_MAX_BRANCH_DEPTH) {
1851 pr_warning("corrupted branch chain. skipping...\n");
1855 for (i = 0; i < nr; i++) {
1856 if (callchain_param.order == ORDER_CALLEE) {
1857 be[i] = branch->entries[i];
1859 * Check for overlap into the callchain.
1860 * The return address is one off compared to
1861 * the branch entry. To adjust for this
1862 * assume the calling instruction is not longer
1865 if (i == skip_idx ||
1866 chain->ips[first_call] >= PERF_CONTEXT_MAX)
1868 else if (be[i].from < chain->ips[first_call] &&
1869 be[i].from >= chain->ips[first_call] - 8)
1872 be[i] = branch->entries[branch->nr - i - 1];
1875 nr = remove_loops(be, nr);
1877 for (i = 0; i < nr; i++) {
1878 err = add_callchain_ip(thread, cursor, parent, root_al,
1881 err = add_callchain_ip(thread, cursor, parent, root_al,
1892 if (chain->nr > sysctl_perf_event_max_stack && (int)chain->nr > max_stack) {
1893 pr_warning("corrupted callchain. skipping...\n");
1897 for (i = first_call; i < chain_nr; i++) {
1900 if (callchain_param.order == ORDER_CALLEE)
1903 j = chain->nr - i - 1;
1905 #ifdef HAVE_SKIP_CALLCHAIN_IDX
1911 err = add_callchain_ip(thread, cursor, parent, root_al, &cpumode, ip);
1914 return (err < 0) ? err : 0;
1920 static int unwind_entry(struct unwind_entry *entry, void *arg)
1922 struct callchain_cursor *cursor = arg;
1924 if (symbol_conf.hide_unresolved && entry->sym == NULL)
1926 return callchain_cursor_append(cursor, entry->ip,
1927 entry->map, entry->sym);
1930 static int thread__resolve_callchain_unwind(struct thread *thread,
1931 struct callchain_cursor *cursor,
1932 struct perf_evsel *evsel,
1933 struct perf_sample *sample,
1936 /* Can we do dwarf post unwind? */
1937 if (!((evsel->attr.sample_type & PERF_SAMPLE_REGS_USER) &&
1938 (evsel->attr.sample_type & PERF_SAMPLE_STACK_USER)))
1941 /* Bail out if nothing was captured. */
1942 if ((!sample->user_regs.regs) ||
1943 (!sample->user_stack.size))
1946 return unwind__get_entries(unwind_entry, cursor,
1947 thread, sample, max_stack);
1950 int thread__resolve_callchain(struct thread *thread,
1951 struct callchain_cursor *cursor,
1952 struct perf_evsel *evsel,
1953 struct perf_sample *sample,
1954 struct symbol **parent,
1955 struct addr_location *root_al,
1960 callchain_cursor_reset(&callchain_cursor);
1962 if (callchain_param.order == ORDER_CALLEE) {
1963 ret = thread__resolve_callchain_sample(thread, cursor,
1969 ret = thread__resolve_callchain_unwind(thread, cursor,
1973 ret = thread__resolve_callchain_unwind(thread, cursor,
1978 ret = thread__resolve_callchain_sample(thread, cursor,
1987 int machine__for_each_thread(struct machine *machine,
1988 int (*fn)(struct thread *thread, void *p),
1992 struct thread *thread;
1995 for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) {
1996 thread = rb_entry(nd, struct thread, rb_node);
1997 rc = fn(thread, priv);
2002 list_for_each_entry(thread, &machine->dead_threads, node) {
2003 rc = fn(thread, priv);
2010 int machines__for_each_thread(struct machines *machines,
2011 int (*fn)(struct thread *thread, void *p),
2017 rc = machine__for_each_thread(&machines->host, fn, priv);
2021 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
2022 struct machine *machine = rb_entry(nd, struct machine, rb_node);
2024 rc = machine__for_each_thread(machine, fn, priv);
2031 int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool,
2032 struct target *target, struct thread_map *threads,
2033 perf_event__handler_t process, bool data_mmap,
2034 unsigned int proc_map_timeout)
2036 if (target__has_task(target))
2037 return perf_event__synthesize_thread_map(tool, threads, process, machine, data_mmap, proc_map_timeout);
2038 else if (target__has_cpu(target))
2039 return perf_event__synthesize_threads(tool, process, machine, data_mmap, proc_map_timeout);
2040 /* command specified */
2044 pid_t machine__get_current_tid(struct machine *machine, int cpu)
2046 if (cpu < 0 || cpu >= MAX_NR_CPUS || !machine->current_tid)
2049 return machine->current_tid[cpu];
2052 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid,
2055 struct thread *thread;
2060 if (!machine->current_tid) {
2063 machine->current_tid = calloc(MAX_NR_CPUS, sizeof(pid_t));
2064 if (!machine->current_tid)
2066 for (i = 0; i < MAX_NR_CPUS; i++)
2067 machine->current_tid[i] = -1;
2070 if (cpu >= MAX_NR_CPUS) {
2071 pr_err("Requested CPU %d too large. ", cpu);
2072 pr_err("Consider raising MAX_NR_CPUS\n");
2076 machine->current_tid[cpu] = tid;
2078 thread = machine__findnew_thread(machine, pid, tid);
2083 thread__put(thread);
2088 int machine__get_kernel_start(struct machine *machine)
2090 struct map *map = machine__kernel_map(machine);
2094 * The only addresses above 2^63 are kernel addresses of a 64-bit
2095 * kernel. Note that addresses are unsigned so that on a 32-bit system
2096 * all addresses including kernel addresses are less than 2^32. In
2097 * that case (32-bit system), if the kernel mapping is unknown, all
2098 * addresses will be assumed to be in user space - see
2099 * machine__kernel_ip().
2101 machine->kernel_start = 1ULL << 63;
2103 err = map__load(map, machine->symbol_filter);
2105 machine->kernel_start = map->start;
2110 struct dso *machine__findnew_dso(struct machine *machine, const char *filename)
2112 return dsos__findnew(&machine->dsos, filename);
2115 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp)
2117 struct machine *machine = vmachine;
2119 struct symbol *sym = map_groups__find_symbol(&machine->kmaps, MAP__FUNCTION, *addrp, &map, NULL);
2124 *modp = __map__is_kmodule(map) ? (char *)map->dso->short_name : NULL;
2125 *addrp = map->unmap_ip(map, sym->start);