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->kptr_restrict_warned = false;
47 machine->comm_exec = false;
48 machine->kernel_start = 0;
50 memset(machine->vmlinux_maps, 0, sizeof(machine->vmlinux_maps));
52 machine->root_dir = strdup(root_dir);
53 if (machine->root_dir == NULL)
56 if (pid != HOST_KERNEL_ID) {
57 struct thread *thread = machine__findnew_thread(machine, -1,
64 snprintf(comm, sizeof(comm), "[guest/%d]", pid);
65 thread__set_comm(thread, comm, 0);
69 machine->current_tid = NULL;
74 struct machine *machine__new_host(void)
76 struct machine *machine = malloc(sizeof(*machine));
78 if (machine != NULL) {
79 machine__init(machine, "", HOST_KERNEL_ID);
81 if (machine__create_kernel_maps(machine) < 0)
91 static void dsos__purge(struct dsos *dsos)
95 pthread_rwlock_wrlock(&dsos->lock);
97 list_for_each_entry_safe(pos, n, &dsos->head, node) {
98 RB_CLEAR_NODE(&pos->rb_node);
100 list_del_init(&pos->node);
104 pthread_rwlock_unlock(&dsos->lock);
107 static void dsos__exit(struct dsos *dsos)
110 pthread_rwlock_destroy(&dsos->lock);
113 void machine__delete_threads(struct machine *machine)
117 pthread_rwlock_wrlock(&machine->threads_lock);
118 nd = rb_first(&machine->threads);
120 struct thread *t = rb_entry(nd, struct thread, rb_node);
123 __machine__remove_thread(machine, t, false);
125 pthread_rwlock_unlock(&machine->threads_lock);
128 void machine__exit(struct machine *machine)
130 machine__destroy_kernel_maps(machine);
131 map_groups__exit(&machine->kmaps);
132 dsos__exit(&machine->dsos);
133 machine__exit_vdso(machine);
134 zfree(&machine->root_dir);
135 zfree(&machine->current_tid);
136 pthread_rwlock_destroy(&machine->threads_lock);
139 void machine__delete(struct machine *machine)
142 machine__exit(machine);
147 void machines__init(struct machines *machines)
149 machine__init(&machines->host, "", HOST_KERNEL_ID);
150 machines->guests = RB_ROOT;
151 machines->symbol_filter = NULL;
154 void machines__exit(struct machines *machines)
156 machine__exit(&machines->host);
160 struct machine *machines__add(struct machines *machines, pid_t pid,
161 const char *root_dir)
163 struct rb_node **p = &machines->guests.rb_node;
164 struct rb_node *parent = NULL;
165 struct machine *pos, *machine = malloc(sizeof(*machine));
170 if (machine__init(machine, root_dir, pid) != 0) {
175 machine->symbol_filter = machines->symbol_filter;
179 pos = rb_entry(parent, struct machine, rb_node);
186 rb_link_node(&machine->rb_node, parent, p);
187 rb_insert_color(&machine->rb_node, &machines->guests);
192 void machines__set_symbol_filter(struct machines *machines,
193 symbol_filter_t symbol_filter)
197 machines->symbol_filter = symbol_filter;
198 machines->host.symbol_filter = symbol_filter;
200 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
201 struct machine *machine = rb_entry(nd, struct machine, rb_node);
203 machine->symbol_filter = symbol_filter;
207 void machines__set_comm_exec(struct machines *machines, bool comm_exec)
211 machines->host.comm_exec = comm_exec;
213 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
214 struct machine *machine = rb_entry(nd, struct machine, rb_node);
216 machine->comm_exec = comm_exec;
220 struct machine *machines__find(struct machines *machines, pid_t pid)
222 struct rb_node **p = &machines->guests.rb_node;
223 struct rb_node *parent = NULL;
224 struct machine *machine;
225 struct machine *default_machine = NULL;
227 if (pid == HOST_KERNEL_ID)
228 return &machines->host;
232 machine = rb_entry(parent, struct machine, rb_node);
233 if (pid < machine->pid)
235 else if (pid > machine->pid)
240 default_machine = machine;
243 return default_machine;
246 struct machine *machines__findnew(struct machines *machines, pid_t pid)
249 const char *root_dir = "";
250 struct machine *machine = machines__find(machines, pid);
252 if (machine && (machine->pid == pid))
255 if ((pid != HOST_KERNEL_ID) &&
256 (pid != DEFAULT_GUEST_KERNEL_ID) &&
257 (symbol_conf.guestmount)) {
258 sprintf(path, "%s/%d", symbol_conf.guestmount, pid);
259 if (access(path, R_OK)) {
260 static struct strlist *seen;
263 seen = strlist__new(NULL, NULL);
265 if (!strlist__has_entry(seen, path)) {
266 pr_err("Can't access file %s\n", path);
267 strlist__add(seen, path);
275 machine = machines__add(machines, pid, root_dir);
280 void machines__process_guests(struct machines *machines,
281 machine__process_t process, void *data)
285 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
286 struct machine *pos = rb_entry(nd, struct machine, rb_node);
291 char *machine__mmap_name(struct machine *machine, char *bf, size_t size)
293 if (machine__is_host(machine))
294 snprintf(bf, size, "[%s]", "kernel.kallsyms");
295 else if (machine__is_default_guest(machine))
296 snprintf(bf, size, "[%s]", "guest.kernel.kallsyms");
298 snprintf(bf, size, "[%s.%d]", "guest.kernel.kallsyms",
305 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size)
307 struct rb_node *node;
308 struct machine *machine;
310 machines->host.id_hdr_size = id_hdr_size;
312 for (node = rb_first(&machines->guests); node; node = rb_next(node)) {
313 machine = rb_entry(node, struct machine, rb_node);
314 machine->id_hdr_size = id_hdr_size;
320 static void machine__update_thread_pid(struct machine *machine,
321 struct thread *th, pid_t pid)
323 struct thread *leader;
325 if (pid == th->pid_ || pid == -1 || th->pid_ != -1)
330 if (th->pid_ == th->tid)
333 leader = __machine__findnew_thread(machine, th->pid_, th->pid_);
338 leader->mg = map_groups__new(machine);
343 if (th->mg == leader->mg)
348 * Maps are created from MMAP events which provide the pid and
349 * tid. Consequently there never should be any maps on a thread
350 * with an unknown pid. Just print an error if there are.
352 if (!map_groups__empty(th->mg))
353 pr_err("Discarding thread maps for %d:%d\n",
355 map_groups__put(th->mg);
358 th->mg = map_groups__get(leader->mg);
363 pr_err("Failed to join map groups for %d:%d\n", th->pid_, th->tid);
368 * Caller must eventually drop thread->refcnt returned with a successful
369 * lookup/new thread inserted.
371 static struct thread *____machine__findnew_thread(struct machine *machine,
372 pid_t pid, pid_t tid,
375 struct rb_node **p = &machine->threads.rb_node;
376 struct rb_node *parent = NULL;
380 * Front-end cache - TID lookups come in blocks,
381 * so most of the time we dont have to look up
384 th = machine->last_match;
386 if (th->tid == tid) {
387 machine__update_thread_pid(machine, th, pid);
388 return thread__get(th);
391 machine->last_match = NULL;
396 th = rb_entry(parent, struct thread, rb_node);
398 if (th->tid == tid) {
399 machine->last_match = th;
400 machine__update_thread_pid(machine, th, pid);
401 return thread__get(th);
413 th = thread__new(pid, tid);
415 rb_link_node(&th->rb_node, parent, p);
416 rb_insert_color(&th->rb_node, &machine->threads);
419 * We have to initialize map_groups separately
420 * after rb tree is updated.
422 * The reason is that we call machine__findnew_thread
423 * within thread__init_map_groups to find the thread
424 * leader and that would screwed the rb tree.
426 if (thread__init_map_groups(th, machine)) {
427 rb_erase_init(&th->rb_node, &machine->threads);
428 RB_CLEAR_NODE(&th->rb_node);
433 * It is now in the rbtree, get a ref
436 machine->last_match = th;
437 ++machine->nr_threads;
443 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid)
445 return ____machine__findnew_thread(machine, pid, tid, true);
448 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid,
453 pthread_rwlock_wrlock(&machine->threads_lock);
454 th = __machine__findnew_thread(machine, pid, tid);
455 pthread_rwlock_unlock(&machine->threads_lock);
459 struct thread *machine__find_thread(struct machine *machine, pid_t pid,
463 pthread_rwlock_rdlock(&machine->threads_lock);
464 th = ____machine__findnew_thread(machine, pid, tid, false);
465 pthread_rwlock_unlock(&machine->threads_lock);
469 struct comm *machine__thread_exec_comm(struct machine *machine,
470 struct thread *thread)
472 if (machine->comm_exec)
473 return thread__exec_comm(thread);
475 return thread__comm(thread);
478 int machine__process_comm_event(struct machine *machine, union perf_event *event,
479 struct perf_sample *sample)
481 struct thread *thread = machine__findnew_thread(machine,
484 bool exec = event->header.misc & PERF_RECORD_MISC_COMM_EXEC;
488 machine->comm_exec = true;
491 perf_event__fprintf_comm(event, stdout);
493 if (thread == NULL ||
494 __thread__set_comm(thread, event->comm.comm, sample->time, exec)) {
495 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
504 int machine__process_lost_event(struct machine *machine __maybe_unused,
505 union perf_event *event, struct perf_sample *sample __maybe_unused)
507 dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n",
508 event->lost.id, event->lost.lost);
512 int machine__process_lost_samples_event(struct machine *machine __maybe_unused,
513 union perf_event *event, struct perf_sample *sample)
515 dump_printf(": id:%" PRIu64 ": lost samples :%" PRIu64 "\n",
516 sample->id, event->lost_samples.lost);
520 static struct dso *machine__findnew_module_dso(struct machine *machine,
522 const char *filename)
526 pthread_rwlock_wrlock(&machine->dsos.lock);
528 dso = __dsos__find(&machine->dsos, m->name, true);
530 dso = __dsos__addnew(&machine->dsos, m->name);
534 if (machine__is_host(machine))
535 dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE;
537 dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE;
539 /* _KMODULE_COMP should be next to _KMODULE */
540 if (m->kmod && m->comp)
543 dso__set_short_name(dso, strdup(m->name), true);
544 dso__set_long_name(dso, strdup(filename), true);
549 pthread_rwlock_unlock(&machine->dsos.lock);
553 int machine__process_aux_event(struct machine *machine __maybe_unused,
554 union perf_event *event)
557 perf_event__fprintf_aux(event, stdout);
561 int machine__process_itrace_start_event(struct machine *machine __maybe_unused,
562 union perf_event *event)
565 perf_event__fprintf_itrace_start(event, stdout);
569 int machine__process_switch_event(struct machine *machine __maybe_unused,
570 union perf_event *event)
573 perf_event__fprintf_switch(event, stdout);
577 static void dso__adjust_kmod_long_name(struct dso *dso, const char *filename)
579 const char *dup_filename;
581 if (!filename || !dso || !dso->long_name)
583 if (dso->long_name[0] != '[')
585 if (!strchr(filename, '/'))
588 dup_filename = strdup(filename);
592 dso__set_long_name(dso, dup_filename, true);
595 struct map *machine__findnew_module_map(struct machine *machine, u64 start,
596 const char *filename)
598 struct map *map = NULL;
599 struct dso *dso = NULL;
602 if (kmod_path__parse_name(&m, filename))
605 map = map_groups__find_by_name(&machine->kmaps, MAP__FUNCTION,
609 * If the map's dso is an offline module, give dso__load()
610 * a chance to find the file path of that module by fixing
613 dso__adjust_kmod_long_name(map->dso, filename);
617 dso = machine__findnew_module_dso(machine, &m, filename);
621 map = map__new2(start, dso, MAP__FUNCTION);
625 map_groups__insert(&machine->kmaps, map);
627 /* Put the map here because map_groups__insert alread got it */
630 /* put the dso here, corresponding to machine__findnew_module_dso */
636 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp)
639 size_t ret = __dsos__fprintf(&machines->host.dsos.head, fp);
641 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
642 struct machine *pos = rb_entry(nd, struct machine, rb_node);
643 ret += __dsos__fprintf(&pos->dsos.head, fp);
649 size_t machine__fprintf_dsos_buildid(struct machine *m, FILE *fp,
650 bool (skip)(struct dso *dso, int parm), int parm)
652 return __dsos__fprintf_buildid(&m->dsos.head, fp, skip, parm);
655 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp,
656 bool (skip)(struct dso *dso, int parm), int parm)
659 size_t ret = machine__fprintf_dsos_buildid(&machines->host, fp, skip, parm);
661 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
662 struct machine *pos = rb_entry(nd, struct machine, rb_node);
663 ret += machine__fprintf_dsos_buildid(pos, fp, skip, parm);
668 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp)
672 struct dso *kdso = machine__kernel_map(machine)->dso;
674 if (kdso->has_build_id) {
675 char filename[PATH_MAX];
676 if (dso__build_id_filename(kdso, filename, sizeof(filename)))
677 printed += fprintf(fp, "[0] %s\n", filename);
680 for (i = 0; i < vmlinux_path__nr_entries; ++i)
681 printed += fprintf(fp, "[%d] %s\n",
682 i + kdso->has_build_id, vmlinux_path[i]);
687 size_t machine__fprintf(struct machine *machine, FILE *fp)
692 pthread_rwlock_rdlock(&machine->threads_lock);
694 ret = fprintf(fp, "Threads: %u\n", machine->nr_threads);
696 for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) {
697 struct thread *pos = rb_entry(nd, struct thread, rb_node);
699 ret += thread__fprintf(pos, fp);
702 pthread_rwlock_unlock(&machine->threads_lock);
707 static struct dso *machine__get_kernel(struct machine *machine)
709 const char *vmlinux_name = NULL;
712 if (machine__is_host(machine)) {
713 vmlinux_name = symbol_conf.vmlinux_name;
715 vmlinux_name = DSO__NAME_KALLSYMS;
717 kernel = machine__findnew_kernel(machine, vmlinux_name,
718 "[kernel]", DSO_TYPE_KERNEL);
722 if (machine__is_default_guest(machine))
723 vmlinux_name = symbol_conf.default_guest_vmlinux_name;
725 vmlinux_name = machine__mmap_name(machine, bf,
728 kernel = machine__findnew_kernel(machine, vmlinux_name,
730 DSO_TYPE_GUEST_KERNEL);
733 if (kernel != NULL && (!kernel->has_build_id))
734 dso__read_running_kernel_build_id(kernel, machine);
739 struct process_args {
743 static void machine__get_kallsyms_filename(struct machine *machine, char *buf,
746 if (machine__is_default_guest(machine))
747 scnprintf(buf, bufsz, "%s", symbol_conf.default_guest_kallsyms);
749 scnprintf(buf, bufsz, "%s/proc/kallsyms", machine->root_dir);
752 const char *ref_reloc_sym_names[] = {"_text", "_stext", NULL};
754 /* Figure out the start address of kernel map from /proc/kallsyms.
755 * Returns the name of the start symbol in *symbol_name. Pass in NULL as
756 * symbol_name if it's not that important.
758 static u64 machine__get_running_kernel_start(struct machine *machine,
759 const char **symbol_name)
761 char filename[PATH_MAX];
766 machine__get_kallsyms_filename(machine, filename, PATH_MAX);
768 if (symbol__restricted_filename(filename, "/proc/kallsyms"))
771 for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) {
772 addr = kallsyms__get_function_start(filename, name);
783 int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel)
786 u64 start = machine__get_running_kernel_start(machine, NULL);
788 /* In case of renewal the kernel map, destroy previous one */
789 machine__destroy_kernel_maps(machine);
791 for (type = 0; type < MAP__NR_TYPES; ++type) {
795 machine->vmlinux_maps[type] = map__new2(start, kernel, type);
796 if (machine->vmlinux_maps[type] == NULL)
799 machine->vmlinux_maps[type]->map_ip =
800 machine->vmlinux_maps[type]->unmap_ip =
802 map = __machine__kernel_map(machine, type);
803 kmap = map__kmap(map);
807 kmap->kmaps = &machine->kmaps;
808 map_groups__insert(&machine->kmaps, map);
814 void machine__destroy_kernel_maps(struct machine *machine)
818 for (type = 0; type < MAP__NR_TYPES; ++type) {
820 struct map *map = __machine__kernel_map(machine, type);
825 kmap = map__kmap(map);
826 map_groups__remove(&machine->kmaps, map);
827 if (kmap && kmap->ref_reloc_sym) {
829 * ref_reloc_sym is shared among all maps, so free just
832 if (type == MAP__FUNCTION) {
833 zfree((char **)&kmap->ref_reloc_sym->name);
834 zfree(&kmap->ref_reloc_sym);
836 kmap->ref_reloc_sym = NULL;
839 map__put(machine->vmlinux_maps[type]);
840 machine->vmlinux_maps[type] = NULL;
844 int machines__create_guest_kernel_maps(struct machines *machines)
847 struct dirent **namelist = NULL;
853 if (symbol_conf.default_guest_vmlinux_name ||
854 symbol_conf.default_guest_modules ||
855 symbol_conf.default_guest_kallsyms) {
856 machines__create_kernel_maps(machines, DEFAULT_GUEST_KERNEL_ID);
859 if (symbol_conf.guestmount) {
860 items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL);
863 for (i = 0; i < items; i++) {
864 if (!isdigit(namelist[i]->d_name[0])) {
865 /* Filter out . and .. */
868 pid = (pid_t)strtol(namelist[i]->d_name, &endp, 10);
869 if ((*endp != '\0') ||
870 (endp == namelist[i]->d_name) ||
872 pr_debug("invalid directory (%s). Skipping.\n",
873 namelist[i]->d_name);
876 sprintf(path, "%s/%s/proc/kallsyms",
877 symbol_conf.guestmount,
878 namelist[i]->d_name);
879 ret = access(path, R_OK);
881 pr_debug("Can't access file %s\n", path);
884 machines__create_kernel_maps(machines, pid);
893 void machines__destroy_kernel_maps(struct machines *machines)
895 struct rb_node *next = rb_first(&machines->guests);
897 machine__destroy_kernel_maps(&machines->host);
900 struct machine *pos = rb_entry(next, struct machine, rb_node);
902 next = rb_next(&pos->rb_node);
903 rb_erase(&pos->rb_node, &machines->guests);
904 machine__delete(pos);
908 int machines__create_kernel_maps(struct machines *machines, pid_t pid)
910 struct machine *machine = machines__findnew(machines, pid);
915 return machine__create_kernel_maps(machine);
918 int __machine__load_kallsyms(struct machine *machine, const char *filename,
919 enum map_type type, bool no_kcore, symbol_filter_t filter)
921 struct map *map = machine__kernel_map(machine);
922 int ret = __dso__load_kallsyms(map->dso, filename, map, no_kcore, filter);
925 dso__set_loaded(map->dso, type);
927 * Since /proc/kallsyms will have multiple sessions for the
928 * kernel, with modules between them, fixup the end of all
931 __map_groups__fixup_end(&machine->kmaps, type);
937 int machine__load_kallsyms(struct machine *machine, const char *filename,
938 enum map_type type, symbol_filter_t filter)
940 return __machine__load_kallsyms(machine, filename, type, false, filter);
943 int machine__load_vmlinux_path(struct machine *machine, enum map_type type,
944 symbol_filter_t filter)
946 struct map *map = machine__kernel_map(machine);
947 int ret = dso__load_vmlinux_path(map->dso, map, filter);
950 dso__set_loaded(map->dso, type);
955 static void map_groups__fixup_end(struct map_groups *mg)
958 for (i = 0; i < MAP__NR_TYPES; ++i)
959 __map_groups__fixup_end(mg, i);
962 static char *get_kernel_version(const char *root_dir)
964 char version[PATH_MAX];
967 const char *prefix = "Linux version ";
969 sprintf(version, "%s/proc/version", root_dir);
970 file = fopen(version, "r");
975 tmp = fgets(version, sizeof(version), file);
978 name = strstr(version, prefix);
981 name += strlen(prefix);
982 tmp = strchr(name, ' ');
989 static bool is_kmod_dso(struct dso *dso)
991 return dso->symtab_type == DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE ||
992 dso->symtab_type == DSO_BINARY_TYPE__GUEST_KMODULE;
995 static int map_groups__set_module_path(struct map_groups *mg, const char *path,
1001 map = map_groups__find_by_name(mg, MAP__FUNCTION, m->name);
1005 long_name = strdup(path);
1006 if (long_name == NULL)
1009 dso__set_long_name(map->dso, long_name, true);
1010 dso__kernel_module_get_build_id(map->dso, "");
1013 * Full name could reveal us kmod compression, so
1014 * we need to update the symtab_type if needed.
1016 if (m->comp && is_kmod_dso(map->dso))
1017 map->dso->symtab_type++;
1022 static int map_groups__set_modules_path_dir(struct map_groups *mg,
1023 const char *dir_name, int depth)
1025 struct dirent *dent;
1026 DIR *dir = opendir(dir_name);
1030 pr_debug("%s: cannot open %s dir\n", __func__, dir_name);
1034 while ((dent = readdir(dir)) != NULL) {
1035 char path[PATH_MAX];
1038 /*sshfs might return bad dent->d_type, so we have to stat*/
1039 snprintf(path, sizeof(path), "%s/%s", dir_name, dent->d_name);
1040 if (stat(path, &st))
1043 if (S_ISDIR(st.st_mode)) {
1044 if (!strcmp(dent->d_name, ".") ||
1045 !strcmp(dent->d_name, ".."))
1048 /* Do not follow top-level source and build symlinks */
1050 if (!strcmp(dent->d_name, "source") ||
1051 !strcmp(dent->d_name, "build"))
1055 ret = map_groups__set_modules_path_dir(mg, path,
1062 ret = kmod_path__parse_name(&m, dent->d_name);
1067 ret = map_groups__set_module_path(mg, path, &m);
1081 static int machine__set_modules_path(struct machine *machine)
1084 char modules_path[PATH_MAX];
1086 version = get_kernel_version(machine->root_dir);
1090 snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s",
1091 machine->root_dir, version);
1094 return map_groups__set_modules_path_dir(&machine->kmaps, modules_path, 0);
1096 int __weak arch__fix_module_text_start(u64 *start __maybe_unused,
1097 const char *name __maybe_unused)
1102 static int machine__create_module(void *arg, const char *name, u64 start)
1104 struct machine *machine = arg;
1107 if (arch__fix_module_text_start(&start, name) < 0)
1110 map = machine__findnew_module_map(machine, start, name);
1114 dso__kernel_module_get_build_id(map->dso, machine->root_dir);
1119 static int machine__create_modules(struct machine *machine)
1121 const char *modules;
1122 char path[PATH_MAX];
1124 if (machine__is_default_guest(machine)) {
1125 modules = symbol_conf.default_guest_modules;
1127 snprintf(path, PATH_MAX, "%s/proc/modules", machine->root_dir);
1131 if (symbol__restricted_filename(modules, "/proc/modules"))
1134 if (modules__parse(modules, machine, machine__create_module))
1137 if (!machine__set_modules_path(machine))
1140 pr_debug("Problems setting modules path maps, continuing anyway...\n");
1145 int machine__create_kernel_maps(struct machine *machine)
1147 struct dso *kernel = machine__get_kernel(machine);
1155 ret = __machine__create_kernel_maps(machine, kernel);
1160 if (symbol_conf.use_modules && machine__create_modules(machine) < 0) {
1161 if (machine__is_host(machine))
1162 pr_debug("Problems creating module maps, "
1163 "continuing anyway...\n");
1165 pr_debug("Problems creating module maps for guest %d, "
1166 "continuing anyway...\n", machine->pid);
1170 * Now that we have all the maps created, just set the ->end of them:
1172 map_groups__fixup_end(&machine->kmaps);
1174 addr = machine__get_running_kernel_start(machine, &name);
1176 } else if (maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, name, addr)) {
1177 machine__destroy_kernel_maps(machine);
1184 static void machine__set_kernel_mmap_len(struct machine *machine,
1185 union perf_event *event)
1189 for (i = 0; i < MAP__NR_TYPES; i++) {
1190 machine->vmlinux_maps[i]->start = event->mmap.start;
1191 machine->vmlinux_maps[i]->end = (event->mmap.start +
1194 * Be a bit paranoid here, some perf.data file came with
1195 * a zero sized synthesized MMAP event for the kernel.
1197 if (machine->vmlinux_maps[i]->end == 0)
1198 machine->vmlinux_maps[i]->end = ~0ULL;
1202 static bool machine__uses_kcore(struct machine *machine)
1206 list_for_each_entry(dso, &machine->dsos.head, node) {
1207 if (dso__is_kcore(dso))
1214 static int machine__process_kernel_mmap_event(struct machine *machine,
1215 union perf_event *event)
1218 char kmmap_prefix[PATH_MAX];
1219 enum dso_kernel_type kernel_type;
1220 bool is_kernel_mmap;
1222 /* If we have maps from kcore then we do not need or want any others */
1223 if (machine__uses_kcore(machine))
1226 machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix));
1227 if (machine__is_host(machine))
1228 kernel_type = DSO_TYPE_KERNEL;
1230 kernel_type = DSO_TYPE_GUEST_KERNEL;
1232 is_kernel_mmap = memcmp(event->mmap.filename,
1234 strlen(kmmap_prefix) - 1) == 0;
1235 if (event->mmap.filename[0] == '/' ||
1236 (!is_kernel_mmap && event->mmap.filename[0] == '[')) {
1237 map = machine__findnew_module_map(machine, event->mmap.start,
1238 event->mmap.filename);
1242 map->end = map->start + event->mmap.len;
1243 } else if (is_kernel_mmap) {
1244 const char *symbol_name = (event->mmap.filename +
1245 strlen(kmmap_prefix));
1247 * Should be there already, from the build-id table in
1250 struct dso *kernel = NULL;
1253 pthread_rwlock_rdlock(&machine->dsos.lock);
1255 list_for_each_entry(dso, &machine->dsos.head, node) {
1258 * The cpumode passed to is_kernel_module is not the
1259 * cpumode of *this* event. If we insist on passing
1260 * correct cpumode to is_kernel_module, we should
1261 * record the cpumode when we adding this dso to the
1264 * However we don't really need passing correct
1265 * cpumode. We know the correct cpumode must be kernel
1266 * mode (if not, we should not link it onto kernel_dsos
1269 * Therefore, we pass PERF_RECORD_MISC_CPUMODE_UNKNOWN.
1270 * is_kernel_module() treats it as a kernel cpumode.
1274 is_kernel_module(dso->long_name,
1275 PERF_RECORD_MISC_CPUMODE_UNKNOWN))
1283 pthread_rwlock_unlock(&machine->dsos.lock);
1286 kernel = machine__findnew_dso(machine, kmmap_prefix);
1290 kernel->kernel = kernel_type;
1291 if (__machine__create_kernel_maps(machine, kernel) < 0) {
1296 if (strstr(kernel->long_name, "vmlinux"))
1297 dso__set_short_name(kernel, "[kernel.vmlinux]", false);
1299 machine__set_kernel_mmap_len(machine, event);
1302 * Avoid using a zero address (kptr_restrict) for the ref reloc
1303 * symbol. Effectively having zero here means that at record
1304 * time /proc/sys/kernel/kptr_restrict was non zero.
1306 if (event->mmap.pgoff != 0) {
1307 maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps,
1312 if (machine__is_default_guest(machine)) {
1314 * preload dso of guest kernel and modules
1316 dso__load(kernel, machine__kernel_map(machine), NULL);
1324 int machine__process_mmap2_event(struct machine *machine,
1325 union perf_event *event,
1326 struct perf_sample *sample)
1328 struct thread *thread;
1334 perf_event__fprintf_mmap2(event, stdout);
1336 if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
1337 sample->cpumode == PERF_RECORD_MISC_KERNEL) {
1338 ret = machine__process_kernel_mmap_event(machine, event);
1344 thread = machine__findnew_thread(machine, event->mmap2.pid,
1349 if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA)
1350 type = MAP__VARIABLE;
1352 type = MAP__FUNCTION;
1354 map = map__new(machine, event->mmap2.start,
1355 event->mmap2.len, event->mmap2.pgoff,
1356 event->mmap2.pid, event->mmap2.maj,
1357 event->mmap2.min, event->mmap2.ino,
1358 event->mmap2.ino_generation,
1361 event->mmap2.filename, type, thread);
1364 goto out_problem_map;
1366 ret = thread__insert_map(thread, map);
1368 goto out_problem_insert;
1370 thread__put(thread);
1377 thread__put(thread);
1379 dump_printf("problem processing PERF_RECORD_MMAP2, skipping event.\n");
1383 int machine__process_mmap_event(struct machine *machine, union perf_event *event,
1384 struct perf_sample *sample)
1386 struct thread *thread;
1392 perf_event__fprintf_mmap(event, stdout);
1394 if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
1395 sample->cpumode == PERF_RECORD_MISC_KERNEL) {
1396 ret = machine__process_kernel_mmap_event(machine, event);
1402 thread = machine__findnew_thread(machine, event->mmap.pid,
1407 if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA)
1408 type = MAP__VARIABLE;
1410 type = MAP__FUNCTION;
1412 map = map__new(machine, event->mmap.start,
1413 event->mmap.len, event->mmap.pgoff,
1414 event->mmap.pid, 0, 0, 0, 0, 0, 0,
1415 event->mmap.filename,
1419 goto out_problem_map;
1421 ret = thread__insert_map(thread, map);
1423 goto out_problem_insert;
1425 thread__put(thread);
1432 thread__put(thread);
1434 dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n");
1438 static void __machine__remove_thread(struct machine *machine, struct thread *th, bool lock)
1440 if (machine->last_match == th)
1441 machine->last_match = NULL;
1443 BUG_ON(atomic_read(&th->refcnt) == 0);
1445 pthread_rwlock_wrlock(&machine->threads_lock);
1446 rb_erase_init(&th->rb_node, &machine->threads);
1447 RB_CLEAR_NODE(&th->rb_node);
1448 --machine->nr_threads;
1450 * Move it first to the dead_threads list, then drop the reference,
1451 * if this is the last reference, then the thread__delete destructor
1452 * will be called and we will remove it from the dead_threads list.
1454 list_add_tail(&th->node, &machine->dead_threads);
1456 pthread_rwlock_unlock(&machine->threads_lock);
1460 void machine__remove_thread(struct machine *machine, struct thread *th)
1462 return __machine__remove_thread(machine, th, true);
1465 int machine__process_fork_event(struct machine *machine, union perf_event *event,
1466 struct perf_sample *sample)
1468 struct thread *thread = machine__find_thread(machine,
1471 struct thread *parent = machine__findnew_thread(machine,
1477 perf_event__fprintf_task(event, stdout);
1480 * There may be an existing thread that is not actually the parent,
1481 * either because we are processing events out of order, or because the
1482 * (fork) event that would have removed the thread was lost. Assume the
1483 * latter case and continue on as best we can.
1485 if (parent->pid_ != (pid_t)event->fork.ppid) {
1486 dump_printf("removing erroneous parent thread %d/%d\n",
1487 parent->pid_, parent->tid);
1488 machine__remove_thread(machine, parent);
1489 thread__put(parent);
1490 parent = machine__findnew_thread(machine, event->fork.ppid,
1494 /* if a thread currently exists for the thread id remove it */
1495 if (thread != NULL) {
1496 machine__remove_thread(machine, thread);
1497 thread__put(thread);
1500 thread = machine__findnew_thread(machine, event->fork.pid,
1503 if (thread == NULL || parent == NULL ||
1504 thread__fork(thread, parent, sample->time) < 0) {
1505 dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
1508 thread__put(thread);
1509 thread__put(parent);
1514 int machine__process_exit_event(struct machine *machine, union perf_event *event,
1515 struct perf_sample *sample __maybe_unused)
1517 struct thread *thread = machine__find_thread(machine,
1522 perf_event__fprintf_task(event, stdout);
1524 if (thread != NULL) {
1525 thread__exited(thread);
1526 thread__put(thread);
1532 int machine__process_event(struct machine *machine, union perf_event *event,
1533 struct perf_sample *sample)
1537 switch (event->header.type) {
1538 case PERF_RECORD_COMM:
1539 ret = machine__process_comm_event(machine, event, sample); break;
1540 case PERF_RECORD_MMAP:
1541 ret = machine__process_mmap_event(machine, event, sample); break;
1542 case PERF_RECORD_MMAP2:
1543 ret = machine__process_mmap2_event(machine, event, sample); break;
1544 case PERF_RECORD_FORK:
1545 ret = machine__process_fork_event(machine, event, sample); break;
1546 case PERF_RECORD_EXIT:
1547 ret = machine__process_exit_event(machine, event, sample); break;
1548 case PERF_RECORD_LOST:
1549 ret = machine__process_lost_event(machine, event, sample); break;
1550 case PERF_RECORD_AUX:
1551 ret = machine__process_aux_event(machine, event); break;
1552 case PERF_RECORD_ITRACE_START:
1553 ret = machine__process_itrace_start_event(machine, event); break;
1554 case PERF_RECORD_LOST_SAMPLES:
1555 ret = machine__process_lost_samples_event(machine, event, sample); break;
1556 case PERF_RECORD_SWITCH:
1557 case PERF_RECORD_SWITCH_CPU_WIDE:
1558 ret = machine__process_switch_event(machine, event); break;
1567 static bool symbol__match_regex(struct symbol *sym, regex_t *regex)
1569 if (sym->name && !regexec(regex, sym->name, 0, NULL, 0))
1574 static void ip__resolve_ams(struct thread *thread,
1575 struct addr_map_symbol *ams,
1578 struct addr_location al;
1580 memset(&al, 0, sizeof(al));
1582 * We cannot use the header.misc hint to determine whether a
1583 * branch stack address is user, kernel, guest, hypervisor.
1584 * Branches may straddle the kernel/user/hypervisor boundaries.
1585 * Thus, we have to try consecutively until we find a match
1586 * or else, the symbol is unknown
1588 thread__find_cpumode_addr_location(thread, MAP__FUNCTION, ip, &al);
1591 ams->al_addr = al.addr;
1596 static void ip__resolve_data(struct thread *thread,
1597 u8 m, struct addr_map_symbol *ams, u64 addr)
1599 struct addr_location al;
1601 memset(&al, 0, sizeof(al));
1603 thread__find_addr_location(thread, m, MAP__VARIABLE, addr, &al);
1604 if (al.map == NULL) {
1606 * some shared data regions have execute bit set which puts
1607 * their mapping in the MAP__FUNCTION type array.
1608 * Check there as a fallback option before dropping the sample.
1610 thread__find_addr_location(thread, m, MAP__FUNCTION, addr, &al);
1614 ams->al_addr = al.addr;
1619 struct mem_info *sample__resolve_mem(struct perf_sample *sample,
1620 struct addr_location *al)
1622 struct mem_info *mi = zalloc(sizeof(*mi));
1627 ip__resolve_ams(al->thread, &mi->iaddr, sample->ip);
1628 ip__resolve_data(al->thread, al->cpumode, &mi->daddr, sample->addr);
1629 mi->data_src.val = sample->data_src;
1634 static int add_callchain_ip(struct thread *thread,
1635 struct callchain_cursor *cursor,
1636 struct symbol **parent,
1637 struct addr_location *root_al,
1641 struct addr_location al;
1646 thread__find_cpumode_addr_location(thread, MAP__FUNCTION,
1649 if (ip >= PERF_CONTEXT_MAX) {
1651 case PERF_CONTEXT_HV:
1652 *cpumode = PERF_RECORD_MISC_HYPERVISOR;
1654 case PERF_CONTEXT_KERNEL:
1655 *cpumode = PERF_RECORD_MISC_KERNEL;
1657 case PERF_CONTEXT_USER:
1658 *cpumode = PERF_RECORD_MISC_USER;
1661 pr_debug("invalid callchain context: "
1662 "%"PRId64"\n", (s64) ip);
1664 * It seems the callchain is corrupted.
1667 callchain_cursor_reset(cursor);
1672 thread__find_addr_location(thread, *cpumode, MAP__FUNCTION,
1676 if (al.sym != NULL) {
1677 if (perf_hpp_list.parent && !*parent &&
1678 symbol__match_regex(al.sym, &parent_regex))
1680 else if (have_ignore_callees && root_al &&
1681 symbol__match_regex(al.sym, &ignore_callees_regex)) {
1682 /* Treat this symbol as the root,
1683 forgetting its callees. */
1685 callchain_cursor_reset(cursor);
1689 if (symbol_conf.hide_unresolved && al.sym == NULL)
1691 return callchain_cursor_append(cursor, al.addr, al.map, al.sym);
1694 struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
1695 struct addr_location *al)
1698 const struct branch_stack *bs = sample->branch_stack;
1699 struct branch_info *bi = calloc(bs->nr, sizeof(struct branch_info));
1704 for (i = 0; i < bs->nr; i++) {
1705 ip__resolve_ams(al->thread, &bi[i].to, bs->entries[i].to);
1706 ip__resolve_ams(al->thread, &bi[i].from, bs->entries[i].from);
1707 bi[i].flags = bs->entries[i].flags;
1714 #define NO_ENTRY 0xff
1716 #define PERF_MAX_BRANCH_DEPTH 127
1719 static int remove_loops(struct branch_entry *l, int nr)
1722 unsigned char chash[CHASHSZ];
1724 memset(chash, NO_ENTRY, sizeof(chash));
1726 BUG_ON(PERF_MAX_BRANCH_DEPTH > 255);
1728 for (i = 0; i < nr; i++) {
1729 int h = hash_64(l[i].from, CHASHBITS) % CHASHSZ;
1731 /* no collision handling for now */
1732 if (chash[h] == NO_ENTRY) {
1734 } else if (l[chash[h]].from == l[i].from) {
1735 bool is_loop = true;
1736 /* check if it is a real loop */
1738 for (j = chash[h]; j < i && i + off < nr; j++, off++)
1739 if (l[j].from != l[i + off].from) {
1744 memmove(l + i, l + i + off,
1745 (nr - (i + off)) * sizeof(*l));
1754 * Recolve LBR callstack chain sample
1756 * 1 on success get LBR callchain information
1757 * 0 no available LBR callchain information, should try fp
1758 * negative error code on other errors.
1760 static int resolve_lbr_callchain_sample(struct thread *thread,
1761 struct callchain_cursor *cursor,
1762 struct perf_sample *sample,
1763 struct symbol **parent,
1764 struct addr_location *root_al,
1767 struct ip_callchain *chain = sample->callchain;
1768 int chain_nr = min(max_stack, (int)chain->nr);
1769 u8 cpumode = PERF_RECORD_MISC_USER;
1773 for (i = 0; i < chain_nr; i++) {
1774 if (chain->ips[i] == PERF_CONTEXT_USER)
1778 /* LBR only affects the user callchain */
1779 if (i != chain_nr) {
1780 struct branch_stack *lbr_stack = sample->branch_stack;
1781 int lbr_nr = lbr_stack->nr;
1783 * LBR callstack can only get user call chain.
1784 * The mix_chain_nr is kernel call chain
1785 * number plus LBR user call chain number.
1786 * i is kernel call chain number,
1787 * 1 is PERF_CONTEXT_USER,
1788 * lbr_nr + 1 is the user call chain number.
1789 * For details, please refer to the comments
1790 * in callchain__printf
1792 int mix_chain_nr = i + 1 + lbr_nr + 1;
1794 for (j = 0; j < mix_chain_nr; j++) {
1795 if (callchain_param.order == ORDER_CALLEE) {
1799 ip = lbr_stack->entries[j - i - 2].from;
1801 ip = lbr_stack->entries[0].to;
1804 ip = lbr_stack->entries[lbr_nr - j - 1].from;
1805 else if (j > lbr_nr)
1806 ip = chain->ips[i + 1 - (j - lbr_nr)];
1808 ip = lbr_stack->entries[0].to;
1811 err = add_callchain_ip(thread, cursor, parent, root_al, &cpumode, ip);
1813 return (err < 0) ? err : 0;
1821 static int thread__resolve_callchain_sample(struct thread *thread,
1822 struct callchain_cursor *cursor,
1823 struct perf_evsel *evsel,
1824 struct perf_sample *sample,
1825 struct symbol **parent,
1826 struct addr_location *root_al,
1829 struct branch_stack *branch = sample->branch_stack;
1830 struct ip_callchain *chain = sample->callchain;
1831 int chain_nr = chain->nr;
1832 u8 cpumode = PERF_RECORD_MISC_USER;
1833 int i, j, err, nr_entries;
1837 if (perf_evsel__has_branch_callstack(evsel)) {
1838 err = resolve_lbr_callchain_sample(thread, cursor, sample, parent,
1839 root_al, max_stack);
1841 return (err < 0) ? err : 0;
1845 * Based on DWARF debug information, some architectures skip
1846 * a callchain entry saved by the kernel.
1848 skip_idx = arch_skip_callchain_idx(thread, chain);
1851 * Add branches to call stack for easier browsing. This gives
1852 * more context for a sample than just the callers.
1854 * This uses individual histograms of paths compared to the
1855 * aggregated histograms the normal LBR mode uses.
1857 * Limitations for now:
1858 * - No extra filters
1859 * - No annotations (should annotate somehow)
1862 if (branch && callchain_param.branch_callstack) {
1863 int nr = min(max_stack, (int)branch->nr);
1864 struct branch_entry be[nr];
1866 if (branch->nr > PERF_MAX_BRANCH_DEPTH) {
1867 pr_warning("corrupted branch chain. skipping...\n");
1871 for (i = 0; i < nr; i++) {
1872 if (callchain_param.order == ORDER_CALLEE) {
1873 be[i] = branch->entries[i];
1875 * Check for overlap into the callchain.
1876 * The return address is one off compared to
1877 * the branch entry. To adjust for this
1878 * assume the calling instruction is not longer
1881 if (i == skip_idx ||
1882 chain->ips[first_call] >= PERF_CONTEXT_MAX)
1884 else if (be[i].from < chain->ips[first_call] &&
1885 be[i].from >= chain->ips[first_call] - 8)
1888 be[i] = branch->entries[branch->nr - i - 1];
1891 nr = remove_loops(be, nr);
1893 for (i = 0; i < nr; i++) {
1894 err = add_callchain_ip(thread, cursor, parent, root_al,
1897 err = add_callchain_ip(thread, cursor, parent, root_al,
1908 for (i = first_call, nr_entries = 0;
1909 i < chain_nr && nr_entries < max_stack; i++) {
1912 if (callchain_param.order == ORDER_CALLEE)
1915 j = chain->nr - i - 1;
1917 #ifdef HAVE_SKIP_CALLCHAIN_IDX
1923 if (ip < PERF_CONTEXT_MAX)
1926 err = add_callchain_ip(thread, cursor, parent, root_al, &cpumode, ip);
1929 return (err < 0) ? err : 0;
1935 static int unwind_entry(struct unwind_entry *entry, void *arg)
1937 struct callchain_cursor *cursor = arg;
1939 if (symbol_conf.hide_unresolved && entry->sym == NULL)
1941 return callchain_cursor_append(cursor, entry->ip,
1942 entry->map, entry->sym);
1945 static int thread__resolve_callchain_unwind(struct thread *thread,
1946 struct callchain_cursor *cursor,
1947 struct perf_evsel *evsel,
1948 struct perf_sample *sample,
1951 /* Can we do dwarf post unwind? */
1952 if (!((evsel->attr.sample_type & PERF_SAMPLE_REGS_USER) &&
1953 (evsel->attr.sample_type & PERF_SAMPLE_STACK_USER)))
1956 /* Bail out if nothing was captured. */
1957 if ((!sample->user_regs.regs) ||
1958 (!sample->user_stack.size))
1961 return unwind__get_entries(unwind_entry, cursor,
1962 thread, sample, max_stack);
1965 int thread__resolve_callchain(struct thread *thread,
1966 struct callchain_cursor *cursor,
1967 struct perf_evsel *evsel,
1968 struct perf_sample *sample,
1969 struct symbol **parent,
1970 struct addr_location *root_al,
1975 callchain_cursor_reset(&callchain_cursor);
1977 if (callchain_param.order == ORDER_CALLEE) {
1978 ret = thread__resolve_callchain_sample(thread, cursor,
1984 ret = thread__resolve_callchain_unwind(thread, cursor,
1988 ret = thread__resolve_callchain_unwind(thread, cursor,
1993 ret = thread__resolve_callchain_sample(thread, cursor,
2002 int machine__for_each_thread(struct machine *machine,
2003 int (*fn)(struct thread *thread, void *p),
2007 struct thread *thread;
2010 for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) {
2011 thread = rb_entry(nd, struct thread, rb_node);
2012 rc = fn(thread, priv);
2017 list_for_each_entry(thread, &machine->dead_threads, node) {
2018 rc = fn(thread, priv);
2025 int machines__for_each_thread(struct machines *machines,
2026 int (*fn)(struct thread *thread, void *p),
2032 rc = machine__for_each_thread(&machines->host, fn, priv);
2036 for (nd = rb_first(&machines->guests); nd; nd = rb_next(nd)) {
2037 struct machine *machine = rb_entry(nd, struct machine, rb_node);
2039 rc = machine__for_each_thread(machine, fn, priv);
2046 int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool,
2047 struct target *target, struct thread_map *threads,
2048 perf_event__handler_t process, bool data_mmap,
2049 unsigned int proc_map_timeout)
2051 if (target__has_task(target))
2052 return perf_event__synthesize_thread_map(tool, threads, process, machine, data_mmap, proc_map_timeout);
2053 else if (target__has_cpu(target))
2054 return perf_event__synthesize_threads(tool, process, machine, data_mmap, proc_map_timeout);
2055 /* command specified */
2059 pid_t machine__get_current_tid(struct machine *machine, int cpu)
2061 if (cpu < 0 || cpu >= MAX_NR_CPUS || !machine->current_tid)
2064 return machine->current_tid[cpu];
2067 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid,
2070 struct thread *thread;
2075 if (!machine->current_tid) {
2078 machine->current_tid = calloc(MAX_NR_CPUS, sizeof(pid_t));
2079 if (!machine->current_tid)
2081 for (i = 0; i < MAX_NR_CPUS; i++)
2082 machine->current_tid[i] = -1;
2085 if (cpu >= MAX_NR_CPUS) {
2086 pr_err("Requested CPU %d too large. ", cpu);
2087 pr_err("Consider raising MAX_NR_CPUS\n");
2091 machine->current_tid[cpu] = tid;
2093 thread = machine__findnew_thread(machine, pid, tid);
2098 thread__put(thread);
2103 int machine__get_kernel_start(struct machine *machine)
2105 struct map *map = machine__kernel_map(machine);
2109 * The only addresses above 2^63 are kernel addresses of a 64-bit
2110 * kernel. Note that addresses are unsigned so that on a 32-bit system
2111 * all addresses including kernel addresses are less than 2^32. In
2112 * that case (32-bit system), if the kernel mapping is unknown, all
2113 * addresses will be assumed to be in user space - see
2114 * machine__kernel_ip().
2116 machine->kernel_start = 1ULL << 63;
2118 err = map__load(map, machine->symbol_filter);
2120 machine->kernel_start = map->start;
2125 struct dso *machine__findnew_dso(struct machine *machine, const char *filename)
2127 return dsos__findnew(&machine->dsos, filename);
2130 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp)
2132 struct machine *machine = vmachine;
2134 struct symbol *sym = map_groups__find_symbol(&machine->kmaps, MAP__FUNCTION, *addrp, &map, NULL);
2139 *modp = __map__is_kmodule(map) ? (char *)map->dso->short_name : NULL;
2140 *addrp = map->unmap_ip(map, sym->start);