11 const char *map_type__name[MAP__NR_TYPES] = {
12 [MAP__FUNCTION] = "Functions",
13 [MAP__VARIABLE] = "Variables",
16 static inline int is_anon_memory(const char *filename)
18 return strcmp(filename, "//anon") == 0;
21 static inline int is_no_dso_memory(const char *filename)
23 return !strcmp(filename, "[stack]") ||
24 !strcmp(filename, "[vdso]") ||
25 !strcmp(filename, "[heap]");
28 void map__init(struct map *self, enum map_type type,
29 u64 start, u64 end, u64 pgoff, struct dso *dso)
36 self->map_ip = map__map_ip;
37 self->unmap_ip = map__unmap_ip;
38 RB_CLEAR_NODE(&self->rb_node);
40 self->referenced = false;
43 struct map *map__new(struct list_head *dsos__list, u64 start, u64 len,
44 u64 pgoff, u32 pid, char *filename,
47 struct map *self = malloc(sizeof(*self));
50 char newfilename[PATH_MAX];
54 anon = is_anon_memory(filename);
55 no_dso = is_no_dso_memory(filename);
58 snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", pid);
59 filename = newfilename;
62 dso = __dsos__findnew(dsos__list, filename);
66 map__init(self, type, start, start + len, pgoff, dso);
69 self->map_ip = self->unmap_ip = identity__map_ip;
72 * Set memory without DSO as loaded. All map__find_*
73 * functions still return NULL, and we avoid the
74 * unnecessary map__load warning.
77 dso__set_loaded(dso, self->type);
86 void map__delete(struct map *self)
91 void map__fixup_start(struct map *self)
93 struct rb_root *symbols = &self->dso->symbols[self->type];
94 struct rb_node *nd = rb_first(symbols);
96 struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
97 self->start = sym->start;
101 void map__fixup_end(struct map *self)
103 struct rb_root *symbols = &self->dso->symbols[self->type];
104 struct rb_node *nd = rb_last(symbols);
106 struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
107 self->end = sym->end;
111 #define DSO__DELETED "(deleted)"
113 int map__load(struct map *self, symbol_filter_t filter)
115 const char *name = self->dso->long_name;
118 if (dso__loaded(self->dso, self->type))
121 nr = dso__load(self->dso, self, filter);
123 if (self->dso->has_build_id) {
124 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
126 build_id__sprintf(self->dso->build_id,
127 sizeof(self->dso->build_id),
129 pr_warning("%s with build id %s not found",
132 pr_warning("Failed to open %s", name);
134 pr_warning(", continuing without symbols\n");
136 } else if (nr == 0) {
137 const size_t len = strlen(name);
138 const size_t real_len = len - sizeof(DSO__DELETED);
140 if (len > sizeof(DSO__DELETED) &&
141 strcmp(name + real_len + 1, DSO__DELETED) == 0) {
142 pr_warning("%.*s was updated (is prelink enabled?). "
143 "Restart the long running apps that use it!\n",
144 (int)real_len, name);
146 pr_warning("no symbols found in %s, maybe install "
147 "a debug package?\n", name);
153 * Only applies to the kernel, as its symtabs aren't relative like the
156 if (self->dso->kernel)
157 map__reloc_vmlinux(self);
162 struct symbol *map__find_symbol(struct map *self, u64 addr,
163 symbol_filter_t filter)
165 if (map__load(self, filter) < 0)
168 return dso__find_symbol(self->dso, self->type, addr);
171 struct symbol *map__find_symbol_by_name(struct map *self, const char *name,
172 symbol_filter_t filter)
174 if (map__load(self, filter) < 0)
177 if (!dso__sorted_by_name(self->dso, self->type))
178 dso__sort_by_name(self->dso, self->type);
180 return dso__find_symbol_by_name(self->dso, self->type, name);
183 struct map *map__clone(struct map *self)
185 struct map *map = malloc(sizeof(*self));
190 memcpy(map, self, sizeof(*self));
195 int map__overlap(struct map *l, struct map *r)
197 if (l->start > r->start) {
203 if (l->end > r->start)
209 size_t map__fprintf(struct map *self, FILE *fp)
211 return fprintf(fp, " %" PRIx64 "-%" PRIx64 " %" PRIx64 " %s\n",
212 self->start, self->end, self->pgoff, self->dso->name);
215 size_t map__fprintf_dsoname(struct map *map, FILE *fp)
219 if (map && map->dso && (map->dso->name || map->dso->long_name)) {
220 if (symbol_conf.show_kernel_path && map->dso->long_name)
221 dsoname = map->dso->long_name;
222 else if (map->dso->name)
223 dsoname = map->dso->name;
225 dsoname = "[unknown]";
227 return fprintf(fp, "%s", dsoname);
231 * objdump wants/reports absolute IPs for ET_EXEC, and RIPs for ET_DYN.
232 * map->dso->adjust_symbols==1 for ET_EXEC-like cases.
234 u64 map__rip_2objdump(struct map *map, u64 rip)
236 u64 addr = map->dso->adjust_symbols ?
237 map->unmap_ip(map, rip) : /* RIP -> IP */
242 u64 map__objdump_2ip(struct map *map, u64 addr)
244 u64 ip = map->dso->adjust_symbols ?
246 map->unmap_ip(map, addr); /* RIP -> IP */
250 void map_groups__init(struct map_groups *mg)
253 for (i = 0; i < MAP__NR_TYPES; ++i) {
254 mg->maps[i] = RB_ROOT;
255 INIT_LIST_HEAD(&mg->removed_maps[i]);
260 static void maps__delete(struct rb_root *maps)
262 struct rb_node *next = rb_first(maps);
265 struct map *pos = rb_entry(next, struct map, rb_node);
267 next = rb_next(&pos->rb_node);
268 rb_erase(&pos->rb_node, maps);
273 static void maps__delete_removed(struct list_head *maps)
277 list_for_each_entry_safe(pos, n, maps, node) {
278 list_del(&pos->node);
283 void map_groups__exit(struct map_groups *mg)
287 for (i = 0; i < MAP__NR_TYPES; ++i) {
288 maps__delete(&mg->maps[i]);
289 maps__delete_removed(&mg->removed_maps[i]);
293 void map_groups__flush(struct map_groups *mg)
297 for (type = 0; type < MAP__NR_TYPES; type++) {
298 struct rb_root *root = &mg->maps[type];
299 struct rb_node *next = rb_first(root);
302 struct map *pos = rb_entry(next, struct map, rb_node);
303 next = rb_next(&pos->rb_node);
304 rb_erase(&pos->rb_node, root);
306 * We may have references to this map, for
307 * instance in some hist_entry instances, so
308 * just move them to a separate list.
310 list_add_tail(&pos->node, &mg->removed_maps[pos->type]);
315 struct symbol *map_groups__find_symbol(struct map_groups *mg,
316 enum map_type type, u64 addr,
318 symbol_filter_t filter)
320 struct map *map = map_groups__find(mg, type, addr);
325 return map__find_symbol(map, map->map_ip(map, addr), filter);
331 struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg,
335 symbol_filter_t filter)
339 for (nd = rb_first(&mg->maps[type]); nd; nd = rb_next(nd)) {
340 struct map *pos = rb_entry(nd, struct map, rb_node);
341 struct symbol *sym = map__find_symbol_by_name(pos, name, filter);
353 size_t __map_groups__fprintf_maps(struct map_groups *mg,
354 enum map_type type, int verbose, FILE *fp)
356 size_t printed = fprintf(fp, "%s:\n", map_type__name[type]);
359 for (nd = rb_first(&mg->maps[type]); nd; nd = rb_next(nd)) {
360 struct map *pos = rb_entry(nd, struct map, rb_node);
361 printed += fprintf(fp, "Map:");
362 printed += map__fprintf(pos, fp);
364 printed += dso__fprintf(pos->dso, type, fp);
365 printed += fprintf(fp, "--\n");
372 size_t map_groups__fprintf_maps(struct map_groups *mg, int verbose, FILE *fp)
374 size_t printed = 0, i;
375 for (i = 0; i < MAP__NR_TYPES; ++i)
376 printed += __map_groups__fprintf_maps(mg, i, verbose, fp);
380 static size_t __map_groups__fprintf_removed_maps(struct map_groups *mg,
382 int verbose, FILE *fp)
387 list_for_each_entry(pos, &mg->removed_maps[type], node) {
388 printed += fprintf(fp, "Map:");
389 printed += map__fprintf(pos, fp);
391 printed += dso__fprintf(pos->dso, type, fp);
392 printed += fprintf(fp, "--\n");
398 static size_t map_groups__fprintf_removed_maps(struct map_groups *mg,
399 int verbose, FILE *fp)
401 size_t printed = 0, i;
402 for (i = 0; i < MAP__NR_TYPES; ++i)
403 printed += __map_groups__fprintf_removed_maps(mg, i, verbose, fp);
407 size_t map_groups__fprintf(struct map_groups *mg, int verbose, FILE *fp)
409 size_t printed = map_groups__fprintf_maps(mg, verbose, fp);
410 printed += fprintf(fp, "Removed maps:\n");
411 return printed + map_groups__fprintf_removed_maps(mg, verbose, fp);
414 int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map,
415 int verbose, FILE *fp)
417 struct rb_root *root = &mg->maps[map->type];
418 struct rb_node *next = rb_first(root);
422 struct map *pos = rb_entry(next, struct map, rb_node);
423 next = rb_next(&pos->rb_node);
425 if (!map__overlap(pos, map))
429 fputs("overlapping maps:\n", fp);
430 map__fprintf(map, fp);
431 map__fprintf(pos, fp);
434 rb_erase(&pos->rb_node, root);
436 * Now check if we need to create new maps for areas not
437 * overlapped by the new map:
439 if (map->start > pos->start) {
440 struct map *before = map__clone(pos);
442 if (before == NULL) {
447 before->end = map->start - 1;
448 map_groups__insert(mg, before);
450 map__fprintf(before, fp);
453 if (map->end < pos->end) {
454 struct map *after = map__clone(pos);
461 after->start = map->end + 1;
462 map_groups__insert(mg, after);
464 map__fprintf(after, fp);
468 * If we have references, just move them to a separate list.
471 list_add_tail(&pos->node, &mg->removed_maps[map->type]);
483 * XXX This should not really _copy_ te maps, but refcount them.
485 int map_groups__clone(struct map_groups *mg,
486 struct map_groups *parent, enum map_type type)
489 for (nd = rb_first(&parent->maps[type]); nd; nd = rb_next(nd)) {
490 struct map *map = rb_entry(nd, struct map, rb_node);
491 struct map *new = map__clone(map);
494 map_groups__insert(mg, new);
499 static u64 map__reloc_map_ip(struct map *map, u64 ip)
501 return ip + (s64)map->pgoff;
504 static u64 map__reloc_unmap_ip(struct map *map, u64 ip)
506 return ip - (s64)map->pgoff;
509 void map__reloc_vmlinux(struct map *self)
511 struct kmap *kmap = map__kmap(self);
514 if (!kmap->ref_reloc_sym || !kmap->ref_reloc_sym->unrelocated_addr)
517 reloc = (kmap->ref_reloc_sym->unrelocated_addr -
518 kmap->ref_reloc_sym->addr);
523 self->map_ip = map__reloc_map_ip;
524 self->unmap_ip = map__reloc_unmap_ip;
528 void maps__insert(struct rb_root *maps, struct map *map)
530 struct rb_node **p = &maps->rb_node;
531 struct rb_node *parent = NULL;
532 const u64 ip = map->start;
537 m = rb_entry(parent, struct map, rb_node);
544 rb_link_node(&map->rb_node, parent, p);
545 rb_insert_color(&map->rb_node, maps);
548 void maps__remove(struct rb_root *self, struct map *map)
550 rb_erase(&map->rb_node, self);
553 struct map *maps__find(struct rb_root *maps, u64 ip)
555 struct rb_node **p = &maps->rb_node;
556 struct rb_node *parent = NULL;
561 m = rb_entry(parent, struct map, rb_node);
564 else if (ip > m->end)
573 int machine__init(struct machine *self, const char *root_dir, pid_t pid)
575 map_groups__init(&self->kmaps);
576 RB_CLEAR_NODE(&self->rb_node);
577 INIT_LIST_HEAD(&self->user_dsos);
578 INIT_LIST_HEAD(&self->kernel_dsos);
580 self->threads = RB_ROOT;
581 INIT_LIST_HEAD(&self->dead_threads);
582 self->last_match = NULL;
584 self->kmaps.machine = self;
586 self->root_dir = strdup(root_dir);
587 return self->root_dir == NULL ? -ENOMEM : 0;
590 static void dsos__delete(struct list_head *self)
594 list_for_each_entry_safe(pos, n, self, node) {
595 list_del(&pos->node);
600 void machine__exit(struct machine *self)
602 map_groups__exit(&self->kmaps);
603 dsos__delete(&self->user_dsos);
604 dsos__delete(&self->kernel_dsos);
605 free(self->root_dir);
606 self->root_dir = NULL;
609 void machine__delete(struct machine *self)
615 struct machine *machines__add(struct rb_root *self, pid_t pid,
616 const char *root_dir)
618 struct rb_node **p = &self->rb_node;
619 struct rb_node *parent = NULL;
620 struct machine *pos, *machine = malloc(sizeof(*machine));
625 if (machine__init(machine, root_dir, pid) != 0) {
632 pos = rb_entry(parent, struct machine, rb_node);
639 rb_link_node(&machine->rb_node, parent, p);
640 rb_insert_color(&machine->rb_node, self);
645 struct machine *machines__find(struct rb_root *self, pid_t pid)
647 struct rb_node **p = &self->rb_node;
648 struct rb_node *parent = NULL;
649 struct machine *machine;
650 struct machine *default_machine = NULL;
654 machine = rb_entry(parent, struct machine, rb_node);
655 if (pid < machine->pid)
657 else if (pid > machine->pid)
662 default_machine = machine;
665 return default_machine;
668 struct machine *machines__findnew(struct rb_root *self, pid_t pid)
671 const char *root_dir;
672 struct machine *machine = machines__find(self, pid);
674 if (!machine || machine->pid != pid) {
675 if (pid == HOST_KERNEL_ID || pid == DEFAULT_GUEST_KERNEL_ID)
678 if (!symbol_conf.guestmount)
680 sprintf(path, "%s/%d", symbol_conf.guestmount, pid);
681 if (access(path, R_OK)) {
682 pr_err("Can't access file %s\n", path);
687 machine = machines__add(self, pid, root_dir);
694 void machines__process(struct rb_root *self, machine__process_t process, void *data)
698 for (nd = rb_first(self); nd; nd = rb_next(nd)) {
699 struct machine *pos = rb_entry(nd, struct machine, rb_node);
704 char *machine__mmap_name(struct machine *self, char *bf, size_t size)
706 if (machine__is_host(self))
707 snprintf(bf, size, "[%s]", "kernel.kallsyms");
708 else if (machine__is_default_guest(self))
709 snprintf(bf, size, "[%s]", "guest.kernel.kallsyms");
711 snprintf(bf, size, "[%s.%d]", "guest.kernel.kallsyms", self->pid);