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 void map__init(struct map *self, enum map_type type,
22 u64 start, u64 end, u64 pgoff, struct dso *dso)
29 self->map_ip = map__map_ip;
30 self->unmap_ip = map__unmap_ip;
31 RB_CLEAR_NODE(&self->rb_node);
33 self->referenced = false;
36 struct map *map__new(struct list_head *dsos__list, u64 start, u64 len,
37 u64 pgoff, u32 pid, char *filename,
40 struct map *self = malloc(sizeof(*self));
43 char newfilename[PATH_MAX];
47 anon = is_anon_memory(filename);
50 snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", pid);
51 filename = newfilename;
54 dso = __dsos__findnew(dsos__list, filename);
58 map__init(self, type, start, start + len, pgoff, dso);
62 self->map_ip = self->unmap_ip = identity__map_ip;
63 } else if (strcmp(filename, "[vdso]") == 0) {
64 dso__set_loaded(dso, self->type);
74 void map__delete(struct map *self)
79 void map__fixup_start(struct map *self)
81 struct rb_root *symbols = &self->dso->symbols[self->type];
82 struct rb_node *nd = rb_first(symbols);
84 struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
85 self->start = sym->start;
89 void map__fixup_end(struct map *self)
91 struct rb_root *symbols = &self->dso->symbols[self->type];
92 struct rb_node *nd = rb_last(symbols);
94 struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
99 #define DSO__DELETED "(deleted)"
101 int map__load(struct map *self, symbol_filter_t filter)
103 const char *name = self->dso->long_name;
106 if (dso__loaded(self->dso, self->type))
109 nr = dso__load(self->dso, self, filter);
111 if (self->dso->has_build_id) {
112 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
114 build_id__sprintf(self->dso->build_id,
115 sizeof(self->dso->build_id),
117 pr_warning("%s with build id %s not found",
120 pr_warning("Failed to open %s", name);
122 pr_warning(", continuing without symbols\n");
124 } else if (nr == 0) {
125 const size_t len = strlen(name);
126 const size_t real_len = len - sizeof(DSO__DELETED);
128 if (len > sizeof(DSO__DELETED) &&
129 strcmp(name + real_len + 1, DSO__DELETED) == 0) {
130 pr_warning("%.*s was updated, restart the long "
131 "running apps that use it!\n",
132 (int)real_len, name);
134 pr_warning("no symbols found in %s, maybe install "
135 "a debug package?\n", name);
141 * Only applies to the kernel, as its symtabs aren't relative like the
144 if (self->dso->kernel)
145 map__reloc_vmlinux(self);
150 struct symbol *map__find_symbol(struct map *self, u64 addr,
151 symbol_filter_t filter)
153 if (map__load(self, filter) < 0)
156 return dso__find_symbol(self->dso, self->type, addr);
159 struct symbol *map__find_symbol_by_name(struct map *self, const char *name,
160 symbol_filter_t filter)
162 if (map__load(self, filter) < 0)
165 if (!dso__sorted_by_name(self->dso, self->type))
166 dso__sort_by_name(self->dso, self->type);
168 return dso__find_symbol_by_name(self->dso, self->type, name);
171 struct map *map__clone(struct map *self)
173 struct map *map = malloc(sizeof(*self));
178 memcpy(map, self, sizeof(*self));
183 int map__overlap(struct map *l, struct map *r)
185 if (l->start > r->start) {
191 if (l->end > r->start)
197 size_t map__fprintf(struct map *self, FILE *fp)
199 return fprintf(fp, " %" PRIx64 "-%" PRIx64 " %" PRIx64 " %s\n",
200 self->start, self->end, self->pgoff, self->dso->name);
204 * objdump wants/reports absolute IPs for ET_EXEC, and RIPs for ET_DYN.
205 * map->dso->adjust_symbols==1 for ET_EXEC-like cases.
207 u64 map__rip_2objdump(struct map *map, u64 rip)
209 u64 addr = map->dso->adjust_symbols ?
210 map->unmap_ip(map, rip) : /* RIP -> IP */
215 u64 map__objdump_2ip(struct map *map, u64 addr)
217 u64 ip = map->dso->adjust_symbols ?
219 map->unmap_ip(map, addr); /* RIP -> IP */
223 void map_groups__init(struct map_groups *self)
226 for (i = 0; i < MAP__NR_TYPES; ++i) {
227 self->maps[i] = RB_ROOT;
228 INIT_LIST_HEAD(&self->removed_maps[i]);
230 self->machine = NULL;
233 static void maps__delete(struct rb_root *self)
235 struct rb_node *next = rb_first(self);
238 struct map *pos = rb_entry(next, struct map, rb_node);
240 next = rb_next(&pos->rb_node);
241 rb_erase(&pos->rb_node, self);
246 static void maps__delete_removed(struct list_head *self)
250 list_for_each_entry_safe(pos, n, self, node) {
251 list_del(&pos->node);
256 void map_groups__exit(struct map_groups *self)
260 for (i = 0; i < MAP__NR_TYPES; ++i) {
261 maps__delete(&self->maps[i]);
262 maps__delete_removed(&self->removed_maps[i]);
266 void map_groups__flush(struct map_groups *self)
270 for (type = 0; type < MAP__NR_TYPES; type++) {
271 struct rb_root *root = &self->maps[type];
272 struct rb_node *next = rb_first(root);
275 struct map *pos = rb_entry(next, struct map, rb_node);
276 next = rb_next(&pos->rb_node);
277 rb_erase(&pos->rb_node, root);
279 * We may have references to this map, for
280 * instance in some hist_entry instances, so
281 * just move them to a separate list.
283 list_add_tail(&pos->node, &self->removed_maps[pos->type]);
288 struct symbol *map_groups__find_symbol(struct map_groups *self,
289 enum map_type type, u64 addr,
291 symbol_filter_t filter)
293 struct map *map = map_groups__find(self, type, addr);
298 return map__find_symbol(map, map->map_ip(map, addr), filter);
304 struct symbol *map_groups__find_symbol_by_name(struct map_groups *self,
308 symbol_filter_t filter)
312 for (nd = rb_first(&self->maps[type]); nd; nd = rb_next(nd)) {
313 struct map *pos = rb_entry(nd, struct map, rb_node);
314 struct symbol *sym = map__find_symbol_by_name(pos, name, filter);
326 size_t __map_groups__fprintf_maps(struct map_groups *self,
327 enum map_type type, int verbose, FILE *fp)
329 size_t printed = fprintf(fp, "%s:\n", map_type__name[type]);
332 for (nd = rb_first(&self->maps[type]); nd; nd = rb_next(nd)) {
333 struct map *pos = rb_entry(nd, struct map, rb_node);
334 printed += fprintf(fp, "Map:");
335 printed += map__fprintf(pos, fp);
337 printed += dso__fprintf(pos->dso, type, fp);
338 printed += fprintf(fp, "--\n");
345 size_t map_groups__fprintf_maps(struct map_groups *self, int verbose, FILE *fp)
347 size_t printed = 0, i;
348 for (i = 0; i < MAP__NR_TYPES; ++i)
349 printed += __map_groups__fprintf_maps(self, i, verbose, fp);
353 static size_t __map_groups__fprintf_removed_maps(struct map_groups *self,
355 int verbose, FILE *fp)
360 list_for_each_entry(pos, &self->removed_maps[type], 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");
371 static size_t map_groups__fprintf_removed_maps(struct map_groups *self,
372 int verbose, FILE *fp)
374 size_t printed = 0, i;
375 for (i = 0; i < MAP__NR_TYPES; ++i)
376 printed += __map_groups__fprintf_removed_maps(self, i, verbose, fp);
380 size_t map_groups__fprintf(struct map_groups *self, int verbose, FILE *fp)
382 size_t printed = map_groups__fprintf_maps(self, verbose, fp);
383 printed += fprintf(fp, "Removed maps:\n");
384 return printed + map_groups__fprintf_removed_maps(self, verbose, fp);
387 int map_groups__fixup_overlappings(struct map_groups *self, struct map *map,
388 int verbose, FILE *fp)
390 struct rb_root *root = &self->maps[map->type];
391 struct rb_node *next = rb_first(root);
395 struct map *pos = rb_entry(next, struct map, rb_node);
396 next = rb_next(&pos->rb_node);
398 if (!map__overlap(pos, map))
402 fputs("overlapping maps:\n", fp);
403 map__fprintf(map, fp);
404 map__fprintf(pos, fp);
407 rb_erase(&pos->rb_node, root);
409 * Now check if we need to create new maps for areas not
410 * overlapped by the new map:
412 if (map->start > pos->start) {
413 struct map *before = map__clone(pos);
415 if (before == NULL) {
420 before->end = map->start - 1;
421 map_groups__insert(self, before);
423 map__fprintf(before, fp);
426 if (map->end < pos->end) {
427 struct map *after = map__clone(pos);
434 after->start = map->end + 1;
435 map_groups__insert(self, after);
437 map__fprintf(after, fp);
441 * If we have references, just move them to a separate list.
444 list_add_tail(&pos->node, &self->removed_maps[map->type]);
456 * XXX This should not really _copy_ te maps, but refcount them.
458 int map_groups__clone(struct map_groups *self,
459 struct map_groups *parent, enum map_type type)
462 for (nd = rb_first(&parent->maps[type]); nd; nd = rb_next(nd)) {
463 struct map *map = rb_entry(nd, struct map, rb_node);
464 struct map *new = map__clone(map);
467 map_groups__insert(self, new);
472 static u64 map__reloc_map_ip(struct map *map, u64 ip)
474 return ip + (s64)map->pgoff;
477 static u64 map__reloc_unmap_ip(struct map *map, u64 ip)
479 return ip - (s64)map->pgoff;
482 void map__reloc_vmlinux(struct map *self)
484 struct kmap *kmap = map__kmap(self);
487 if (!kmap->ref_reloc_sym || !kmap->ref_reloc_sym->unrelocated_addr)
490 reloc = (kmap->ref_reloc_sym->unrelocated_addr -
491 kmap->ref_reloc_sym->addr);
496 self->map_ip = map__reloc_map_ip;
497 self->unmap_ip = map__reloc_unmap_ip;
501 void maps__insert(struct rb_root *maps, struct map *map)
503 struct rb_node **p = &maps->rb_node;
504 struct rb_node *parent = NULL;
505 const u64 ip = map->start;
510 m = rb_entry(parent, struct map, rb_node);
517 rb_link_node(&map->rb_node, parent, p);
518 rb_insert_color(&map->rb_node, maps);
521 void maps__remove(struct rb_root *self, struct map *map)
523 rb_erase(&map->rb_node, self);
526 struct map *maps__find(struct rb_root *maps, u64 ip)
528 struct rb_node **p = &maps->rb_node;
529 struct rb_node *parent = NULL;
534 m = rb_entry(parent, struct map, rb_node);
537 else if (ip > m->end)
546 int machine__init(struct machine *self, const char *root_dir, pid_t pid)
548 map_groups__init(&self->kmaps);
549 RB_CLEAR_NODE(&self->rb_node);
550 INIT_LIST_HEAD(&self->user_dsos);
551 INIT_LIST_HEAD(&self->kernel_dsos);
553 self->kmaps.machine = self;
555 self->root_dir = strdup(root_dir);
556 return self->root_dir == NULL ? -ENOMEM : 0;
559 static void dsos__delete(struct list_head *self)
563 list_for_each_entry_safe(pos, n, self, node) {
564 list_del(&pos->node);
569 void machine__exit(struct machine *self)
571 map_groups__exit(&self->kmaps);
572 dsos__delete(&self->user_dsos);
573 dsos__delete(&self->kernel_dsos);
574 free(self->root_dir);
575 self->root_dir = NULL;
578 void machine__delete(struct machine *self)
584 struct machine *machines__add(struct rb_root *self, pid_t pid,
585 const char *root_dir)
587 struct rb_node **p = &self->rb_node;
588 struct rb_node *parent = NULL;
589 struct machine *pos, *machine = malloc(sizeof(*machine));
594 if (machine__init(machine, root_dir, pid) != 0) {
601 pos = rb_entry(parent, struct machine, rb_node);
608 rb_link_node(&machine->rb_node, parent, p);
609 rb_insert_color(&machine->rb_node, self);
614 struct machine *machines__find(struct rb_root *self, pid_t pid)
616 struct rb_node **p = &self->rb_node;
617 struct rb_node *parent = NULL;
618 struct machine *machine;
619 struct machine *default_machine = NULL;
623 machine = rb_entry(parent, struct machine, rb_node);
624 if (pid < machine->pid)
626 else if (pid > machine->pid)
631 default_machine = machine;
634 return default_machine;
637 struct machine *machines__findnew(struct rb_root *self, pid_t pid)
640 const char *root_dir;
641 struct machine *machine = machines__find(self, pid);
643 if (!machine || machine->pid != pid) {
644 if (pid == HOST_KERNEL_ID || pid == DEFAULT_GUEST_KERNEL_ID)
647 if (!symbol_conf.guestmount)
649 sprintf(path, "%s/%d", symbol_conf.guestmount, pid);
650 if (access(path, R_OK)) {
651 pr_err("Can't access file %s\n", path);
656 machine = machines__add(self, pid, root_dir);
663 void machines__process(struct rb_root *self, machine__process_t process, void *data)
667 for (nd = rb_first(self); nd; nd = rb_next(nd)) {
668 struct machine *pos = rb_entry(nd, struct machine, rb_node);
673 char *machine__mmap_name(struct machine *self, char *bf, size_t size)
675 if (machine__is_host(self))
676 snprintf(bf, size, "[%s]", "kernel.kallsyms");
677 else if (machine__is_default_guest(self))
678 snprintf(bf, size, "[%s]", "guest.kernel.kallsyms");
680 snprintf(bf, size, "[%s.%d]", "guest.kernel.kallsyms", self->pid);