10 const char *map_type__name[MAP__NR_TYPES] = {
11 [MAP__FUNCTION] = "Functions",
12 [MAP__VARIABLE] = "Variables",
15 static inline int is_anon_memory(const char *filename)
17 return strcmp(filename, "//anon") == 0;
20 void map__init(struct map *self, enum map_type type,
21 u64 start, u64 end, u64 pgoff, struct dso *dso)
28 self->map_ip = map__map_ip;
29 self->unmap_ip = map__unmap_ip;
30 RB_CLEAR_NODE(&self->rb_node);
32 self->referenced = false;
35 struct map *map__new(struct list_head *dsos__list, u64 start, u64 len,
36 u64 pgoff, u32 pid, char *filename,
39 struct map *self = malloc(sizeof(*self));
42 char newfilename[PATH_MAX];
46 anon = is_anon_memory(filename);
49 snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", pid);
50 filename = newfilename;
53 dso = __dsos__findnew(dsos__list, filename);
57 map__init(self, type, start, start + len, pgoff, dso);
61 self->map_ip = self->unmap_ip = identity__map_ip;
62 } else if (strcmp(filename, "[vdso]") == 0) {
63 dso__set_loaded(dso, self->type);
73 void map__delete(struct map *self)
78 void map__fixup_start(struct map *self)
80 struct rb_root *symbols = &self->dso->symbols[self->type];
81 struct rb_node *nd = rb_first(symbols);
83 struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
84 self->start = sym->start;
88 void map__fixup_end(struct map *self)
90 struct rb_root *symbols = &self->dso->symbols[self->type];
91 struct rb_node *nd = rb_last(symbols);
93 struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
98 #define DSO__DELETED "(deleted)"
100 int map__load(struct map *self, symbol_filter_t filter)
102 const char *name = self->dso->long_name;
105 if (dso__loaded(self->dso, self->type))
108 nr = dso__load(self->dso, self, filter);
110 if (self->dso->has_build_id) {
111 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
113 build_id__sprintf(self->dso->build_id,
114 sizeof(self->dso->build_id),
116 pr_warning("%s with build id %s not found",
119 pr_warning("Failed to open %s", name);
121 pr_warning(", continuing without symbols\n");
123 } else if (nr == 0) {
124 const size_t len = strlen(name);
125 const size_t real_len = len - sizeof(DSO__DELETED);
127 if (len > sizeof(DSO__DELETED) &&
128 strcmp(name + real_len + 1, DSO__DELETED) == 0) {
129 pr_warning("%.*s was updated, restart the long "
130 "running apps that use it!\n",
131 (int)real_len, name);
133 pr_warning("no symbols found in %s, maybe install "
134 "a debug package?\n", name);
140 * Only applies to the kernel, as its symtabs aren't relative like the
143 if (self->dso->kernel)
144 map__reloc_vmlinux(self);
149 struct symbol *map__find_symbol(struct map *self, u64 addr,
150 symbol_filter_t filter)
152 if (map__load(self, filter) < 0)
155 return dso__find_symbol(self->dso, self->type, addr);
158 struct symbol *map__find_symbol_by_name(struct map *self, const char *name,
159 symbol_filter_t filter)
161 if (map__load(self, filter) < 0)
164 if (!dso__sorted_by_name(self->dso, self->type))
165 dso__sort_by_name(self->dso, self->type);
167 return dso__find_symbol_by_name(self->dso, self->type, name);
170 struct map *map__clone(struct map *self)
172 struct map *map = malloc(sizeof(*self));
177 memcpy(map, self, sizeof(*self));
182 int map__overlap(struct map *l, struct map *r)
184 if (l->start > r->start) {
190 if (l->end > r->start)
196 size_t map__fprintf(struct map *self, FILE *fp)
198 return fprintf(fp, " %Lx-%Lx %Lx %s\n",
199 self->start, self->end, self->pgoff, self->dso->name);
203 * objdump wants/reports absolute IPs for ET_EXEC, and RIPs for ET_DYN.
204 * map->dso->adjust_symbols==1 for ET_EXEC-like cases.
206 u64 map__rip_2objdump(struct map *map, u64 rip)
208 u64 addr = map->dso->adjust_symbols ?
209 map->unmap_ip(map, rip) : /* RIP -> IP */
214 u64 map__objdump_2ip(struct map *map, u64 addr)
216 u64 ip = map->dso->adjust_symbols ?
218 map->unmap_ip(map, addr); /* RIP -> IP */
222 void map_groups__init(struct map_groups *self)
225 for (i = 0; i < MAP__NR_TYPES; ++i) {
226 self->maps[i] = RB_ROOT;
227 INIT_LIST_HEAD(&self->removed_maps[i]);
229 self->machine = NULL;
232 static void maps__delete(struct rb_root *self)
234 struct rb_node *next = rb_first(self);
237 struct map *pos = rb_entry(next, struct map, rb_node);
239 next = rb_next(&pos->rb_node);
240 rb_erase(&pos->rb_node, self);
245 static void maps__delete_removed(struct list_head *self)
249 list_for_each_entry_safe(pos, n, self, node) {
250 list_del(&pos->node);
255 void map_groups__exit(struct map_groups *self)
259 for (i = 0; i < MAP__NR_TYPES; ++i) {
260 maps__delete(&self->maps[i]);
261 maps__delete_removed(&self->removed_maps[i]);
265 void map_groups__flush(struct map_groups *self)
269 for (type = 0; type < MAP__NR_TYPES; type++) {
270 struct rb_root *root = &self->maps[type];
271 struct rb_node *next = rb_first(root);
274 struct map *pos = rb_entry(next, struct map, rb_node);
275 next = rb_next(&pos->rb_node);
276 rb_erase(&pos->rb_node, root);
278 * We may have references to this map, for
279 * instance in some hist_entry instances, so
280 * just move them to a separate list.
282 list_add_tail(&pos->node, &self->removed_maps[pos->type]);
287 struct symbol *map_groups__find_symbol(struct map_groups *self,
288 enum map_type type, u64 addr,
290 symbol_filter_t filter)
292 struct map *map = map_groups__find(self, type, addr);
297 return map__find_symbol(map, map->map_ip(map, addr), filter);
303 struct symbol *map_groups__find_symbol_by_name(struct map_groups *self,
307 symbol_filter_t filter)
311 for (nd = rb_first(&self->maps[type]); nd; nd = rb_next(nd)) {
312 struct map *pos = rb_entry(nd, struct map, rb_node);
313 struct symbol *sym = map__find_symbol_by_name(pos, name, filter);
325 size_t __map_groups__fprintf_maps(struct map_groups *self,
326 enum map_type type, int verbose, FILE *fp)
328 size_t printed = fprintf(fp, "%s:\n", map_type__name[type]);
331 for (nd = rb_first(&self->maps[type]); nd; nd = rb_next(nd)) {
332 struct map *pos = rb_entry(nd, struct map, rb_node);
333 printed += fprintf(fp, "Map:");
334 printed += map__fprintf(pos, fp);
336 printed += dso__fprintf(pos->dso, type, fp);
337 printed += fprintf(fp, "--\n");
344 size_t map_groups__fprintf_maps(struct map_groups *self, int verbose, FILE *fp)
346 size_t printed = 0, i;
347 for (i = 0; i < MAP__NR_TYPES; ++i)
348 printed += __map_groups__fprintf_maps(self, i, verbose, fp);
352 static size_t __map_groups__fprintf_removed_maps(struct map_groups *self,
354 int verbose, FILE *fp)
359 list_for_each_entry(pos, &self->removed_maps[type], node) {
360 printed += fprintf(fp, "Map:");
361 printed += map__fprintf(pos, fp);
363 printed += dso__fprintf(pos->dso, type, fp);
364 printed += fprintf(fp, "--\n");
370 static size_t map_groups__fprintf_removed_maps(struct map_groups *self,
371 int verbose, FILE *fp)
373 size_t printed = 0, i;
374 for (i = 0; i < MAP__NR_TYPES; ++i)
375 printed += __map_groups__fprintf_removed_maps(self, i, verbose, fp);
379 size_t map_groups__fprintf(struct map_groups *self, int verbose, FILE *fp)
381 size_t printed = map_groups__fprintf_maps(self, verbose, fp);
382 printed += fprintf(fp, "Removed maps:\n");
383 return printed + map_groups__fprintf_removed_maps(self, verbose, fp);
386 int map_groups__fixup_overlappings(struct map_groups *self, struct map *map,
387 int verbose, FILE *fp)
389 struct rb_root *root = &self->maps[map->type];
390 struct rb_node *next = rb_first(root);
394 struct map *pos = rb_entry(next, struct map, rb_node);
395 next = rb_next(&pos->rb_node);
397 if (!map__overlap(pos, map))
401 fputs("overlapping maps:\n", fp);
402 map__fprintf(map, fp);
403 map__fprintf(pos, fp);
406 rb_erase(&pos->rb_node, root);
408 * Now check if we need to create new maps for areas not
409 * overlapped by the new map:
411 if (map->start > pos->start) {
412 struct map *before = map__clone(pos);
414 if (before == NULL) {
419 before->end = map->start - 1;
420 map_groups__insert(self, before);
422 map__fprintf(before, fp);
425 if (map->end < pos->end) {
426 struct map *after = map__clone(pos);
433 after->start = map->end + 1;
434 map_groups__insert(self, after);
436 map__fprintf(after, fp);
440 * If we have references, just move them to a separate list.
443 list_add_tail(&pos->node, &self->removed_maps[map->type]);
455 * XXX This should not really _copy_ te maps, but refcount them.
457 int map_groups__clone(struct map_groups *self,
458 struct map_groups *parent, enum map_type type)
461 for (nd = rb_first(&parent->maps[type]); nd; nd = rb_next(nd)) {
462 struct map *map = rb_entry(nd, struct map, rb_node);
463 struct map *new = map__clone(map);
466 map_groups__insert(self, new);
471 static u64 map__reloc_map_ip(struct map *map, u64 ip)
473 return ip + (s64)map->pgoff;
476 static u64 map__reloc_unmap_ip(struct map *map, u64 ip)
478 return ip - (s64)map->pgoff;
481 void map__reloc_vmlinux(struct map *self)
483 struct kmap *kmap = map__kmap(self);
486 if (!kmap->ref_reloc_sym || !kmap->ref_reloc_sym->unrelocated_addr)
489 reloc = (kmap->ref_reloc_sym->unrelocated_addr -
490 kmap->ref_reloc_sym->addr);
495 self->map_ip = map__reloc_map_ip;
496 self->unmap_ip = map__reloc_unmap_ip;
500 void maps__insert(struct rb_root *maps, struct map *map)
502 struct rb_node **p = &maps->rb_node;
503 struct rb_node *parent = NULL;
504 const u64 ip = map->start;
509 m = rb_entry(parent, struct map, rb_node);
516 rb_link_node(&map->rb_node, parent, p);
517 rb_insert_color(&map->rb_node, maps);
520 void maps__remove(struct rb_root *self, struct map *map)
522 rb_erase(&map->rb_node, self);
525 struct map *maps__find(struct rb_root *maps, u64 ip)
527 struct rb_node **p = &maps->rb_node;
528 struct rb_node *parent = NULL;
533 m = rb_entry(parent, struct map, rb_node);
536 else if (ip > m->end)
545 int machine__init(struct machine *self, const char *root_dir, pid_t pid)
547 map_groups__init(&self->kmaps);
548 RB_CLEAR_NODE(&self->rb_node);
549 INIT_LIST_HEAD(&self->user_dsos);
550 INIT_LIST_HEAD(&self->kernel_dsos);
552 self->kmaps.machine = self;
554 self->root_dir = strdup(root_dir);
555 return self->root_dir == NULL ? -ENOMEM : 0;
558 static void dsos__delete(struct list_head *self)
562 list_for_each_entry_safe(pos, n, self, node) {
563 list_del(&pos->node);
568 void machine__exit(struct machine *self)
570 map_groups__exit(&self->kmaps);
571 dsos__delete(&self->user_dsos);
572 dsos__delete(&self->kernel_dsos);
573 free(self->root_dir);
574 self->root_dir = NULL;
577 void machine__delete(struct machine *self)
583 struct machine *machines__add(struct rb_root *self, pid_t pid,
584 const char *root_dir)
586 struct rb_node **p = &self->rb_node;
587 struct rb_node *parent = NULL;
588 struct machine *pos, *machine = malloc(sizeof(*machine));
593 if (machine__init(machine, root_dir, pid) != 0) {
600 pos = rb_entry(parent, struct machine, rb_node);
607 rb_link_node(&machine->rb_node, parent, p);
608 rb_insert_color(&machine->rb_node, self);
613 struct machine *machines__find(struct rb_root *self, pid_t pid)
615 struct rb_node **p = &self->rb_node;
616 struct rb_node *parent = NULL;
617 struct machine *machine;
618 struct machine *default_machine = NULL;
622 machine = rb_entry(parent, struct machine, rb_node);
623 if (pid < machine->pid)
625 else if (pid > machine->pid)
630 default_machine = machine;
633 return default_machine;
636 struct machine *machines__findnew(struct rb_root *self, pid_t pid)
639 const char *root_dir;
640 struct machine *machine = machines__find(self, pid);
642 if (!machine || machine->pid != pid) {
643 if (pid == HOST_KERNEL_ID || pid == DEFAULT_GUEST_KERNEL_ID)
646 if (!symbol_conf.guestmount)
648 sprintf(path, "%s/%d", symbol_conf.guestmount, pid);
649 if (access(path, R_OK)) {
650 pr_err("Can't access file %s\n", path);
655 machine = machines__add(self, pid, root_dir);
662 void machines__process(struct rb_root *self, machine__process_t process, void *data)
666 for (nd = rb_first(self); nd; nd = rb_next(nd)) {
667 struct machine *pos = rb_entry(nd, struct machine, rb_node);
672 char *machine__mmap_name(struct machine *self, char *bf, size_t size)
674 if (machine__is_host(self))
675 snprintf(bf, size, "[%s]", "kernel.kallsyms");
676 else if (machine__is_default_guest(self))
677 snprintf(bf, size, "[%s]", "guest.kernel.kallsyms");
679 snprintf(bf, size, "[%s.%d]", "guest.kernel.kallsyms", self->pid);