diff options
Diffstat (limited to 'tools/perf/util/map.c')
-rw-r--r-- | tools/perf/util/map.c | 417 |
1 files changed, 8 insertions, 409 deletions
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index df0bf901c555..59cab31e79d4 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -1,31 +1,20 @@ // SPDX-License-Identifier: GPL-2.0 -#include "symbol.h" -#include <assert.h> -#include <errno.h> #include <inttypes.h> #include <limits.h> +#include <stdio.h> #include <stdlib.h> #include <string.h> -#include <stdio.h> -#include <unistd.h> +#include <linux/string.h> +#include <linux/zalloc.h> #include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */ +#include "debug.h" #include "dso.h" #include "map.h" -#include "map_symbol.h" +#include "namespaces.h" +#include "srcline.h" +#include "symbol.h" #include "thread.h" #include "vdso.h" -#include "build-id.h" -#include "debug.h" -#include "machine.h" -#include <linux/string.h> -#include <linux/zalloc.h> -#include "srcline.h" -#include "namespaces.h" -#include "unwind.h" -#include "srccode.h" -#include "ui/ui.h" - -static void __maps__insert(struct maps *maps, struct map *map); static inline int is_android_lib(const char *filename) { @@ -524,403 +513,13 @@ u64 map__objdump_2mem(struct map *map, u64 ip) return ip + map->reloc; } -static void maps__init(struct maps *maps, struct machine *machine) -{ - maps->entries = RB_ROOT; - init_rwsem(&maps->lock); - maps->machine = machine; - maps->last_search_by_name = NULL; - maps->nr_maps = 0; - maps->maps_by_name = NULL; - refcount_set(&maps->refcnt, 1); -} - -static void __maps__free_maps_by_name(struct maps *maps) -{ - /* - * Free everything to try to do it from the rbtree in the next search - */ - zfree(&maps->maps_by_name); - maps->nr_maps_allocated = 0; -} - -void maps__insert(struct maps *maps, struct map *map) -{ - down_write(&maps->lock); - __maps__insert(maps, map); - ++maps->nr_maps; - - if (map->dso && map->dso->kernel) { - struct kmap *kmap = map__kmap(map); - - if (kmap) - kmap->kmaps = maps; - else - pr_err("Internal error: kernel dso with non kernel map\n"); - } - - - /* - * If we already performed some search by name, then we need to add the just - * inserted map and resort. - */ - if (maps->maps_by_name) { - if (maps->nr_maps > maps->nr_maps_allocated) { - int nr_allocate = maps->nr_maps * 2; - struct map **maps_by_name = realloc(maps->maps_by_name, nr_allocate * sizeof(map)); - - if (maps_by_name == NULL) { - __maps__free_maps_by_name(maps); - up_write(&maps->lock); - return; - } - - maps->maps_by_name = maps_by_name; - maps->nr_maps_allocated = nr_allocate; - } - maps->maps_by_name[maps->nr_maps - 1] = map; - __maps__sort_by_name(maps); - } - up_write(&maps->lock); -} - -static void __maps__remove(struct maps *maps, struct map *map) -{ - rb_erase_init(&map->rb_node, &maps->entries); - map__put(map); -} - -void maps__remove(struct maps *maps, struct map *map) -{ - down_write(&maps->lock); - if (maps->last_search_by_name == map) - maps->last_search_by_name = NULL; - - __maps__remove(maps, map); - --maps->nr_maps; - if (maps->maps_by_name) - __maps__free_maps_by_name(maps); - up_write(&maps->lock); -} - -static void __maps__purge(struct maps *maps) -{ - struct map *pos, *next; - - maps__for_each_entry_safe(maps, pos, next) { - rb_erase_init(&pos->rb_node, &maps->entries); - map__put(pos); - } -} - -static void maps__exit(struct maps *maps) -{ - down_write(&maps->lock); - __maps__purge(maps); - up_write(&maps->lock); -} - -bool maps__empty(struct maps *maps) -{ - return !maps__first(maps); -} - -struct maps *maps__new(struct machine *machine) -{ - struct maps *maps = zalloc(sizeof(*maps)); - - if (maps != NULL) - maps__init(maps, machine); - - return maps; -} - -void maps__delete(struct maps *maps) -{ - maps__exit(maps); - unwind__finish_access(maps); - free(maps); -} - -void maps__put(struct maps *maps) -{ - if (maps && refcount_dec_and_test(&maps->refcnt)) - maps__delete(maps); -} - -struct symbol *maps__find_symbol(struct maps *maps, u64 addr, struct map **mapp) -{ - struct map *map = maps__find(maps, addr); - - /* Ensure map is loaded before using map->map_ip */ - if (map != NULL && map__load(map) >= 0) { - if (mapp != NULL) - *mapp = map; - return map__find_symbol(map, map->map_ip(map, addr)); - } - - return NULL; -} - -static bool map__contains_symbol(struct map *map, struct symbol *sym) +bool map__contains_symbol(struct map *map, struct symbol *sym) { u64 ip = map->unmap_ip(map, sym->start); return ip >= map->start && ip < map->end; } -struct symbol *maps__find_symbol_by_name(struct maps *maps, const char *name, struct map **mapp) -{ - struct symbol *sym; - struct map *pos; - - down_read(&maps->lock); - - maps__for_each_entry(maps, pos) { - sym = map__find_symbol_by_name(pos, name); - - if (sym == NULL) - continue; - if (!map__contains_symbol(pos, sym)) { - sym = NULL; - continue; - } - if (mapp != NULL) - *mapp = pos; - goto out; - } - - sym = NULL; -out: - up_read(&maps->lock); - return sym; -} - -int maps__find_ams(struct maps *maps, struct addr_map_symbol *ams) -{ - if (ams->addr < ams->ms.map->start || ams->addr >= ams->ms.map->end) { - if (maps == NULL) - return -1; - ams->ms.map = maps__find(maps, ams->addr); - if (ams->ms.map == NULL) - return -1; - } - - ams->al_addr = ams->ms.map->map_ip(ams->ms.map, ams->addr); - ams->ms.sym = map__find_symbol(ams->ms.map, ams->al_addr); - - return ams->ms.sym ? 0 : -1; -} - -size_t maps__fprintf(struct maps *maps, FILE *fp) -{ - size_t printed = 0; - struct map *pos; - - down_read(&maps->lock); - - maps__for_each_entry(maps, pos) { - printed += fprintf(fp, "Map:"); - printed += map__fprintf(pos, fp); - if (verbose > 2) { - printed += dso__fprintf(pos->dso, fp); - printed += fprintf(fp, "--\n"); - } - } - - up_read(&maps->lock); - - return printed; -} - -int maps__fixup_overlappings(struct maps *maps, struct map *map, FILE *fp) -{ - struct rb_root *root; - struct rb_node *next, *first; - int err = 0; - - down_write(&maps->lock); - - root = &maps->entries; - - /* - * Find first map where end > map->start. - * Same as find_vma() in kernel. - */ - next = root->rb_node; - first = NULL; - while (next) { - struct map *pos = rb_entry(next, struct map, rb_node); - - if (pos->end > map->start) { - first = next; - if (pos->start <= map->start) - break; - next = next->rb_left; - } else - next = next->rb_right; - } - - next = first; - while (next) { - struct map *pos = rb_entry(next, struct map, rb_node); - next = rb_next(&pos->rb_node); - - /* - * Stop if current map starts after map->end. - * Maps are ordered by start: next will not overlap for sure. - */ - if (pos->start >= map->end) - break; - - if (verbose >= 2) { - - if (use_browser) { - pr_debug("overlapping maps in %s (disable tui for more info)\n", - map->dso->name); - } else { - fputs("overlapping maps:\n", fp); - map__fprintf(map, fp); - map__fprintf(pos, fp); - } - } - - rb_erase_init(&pos->rb_node, root); - /* - * Now check if we need to create new maps for areas not - * overlapped by the new map: - */ - if (map->start > pos->start) { - struct map *before = map__clone(pos); - - if (before == NULL) { - err = -ENOMEM; - goto put_map; - } - - before->end = map->start; - __maps__insert(maps, before); - if (verbose >= 2 && !use_browser) - map__fprintf(before, fp); - map__put(before); - } - - if (map->end < pos->end) { - struct map *after = map__clone(pos); - - if (after == NULL) { - err = -ENOMEM; - goto put_map; - } - - after->start = map->end; - after->pgoff += map->end - pos->start; - assert(pos->map_ip(pos, map->end) == after->map_ip(after, map->end)); - __maps__insert(maps, after); - if (verbose >= 2 && !use_browser) - map__fprintf(after, fp); - map__put(after); - } -put_map: - map__put(pos); - - if (err) - goto out; - } - - err = 0; -out: - up_write(&maps->lock); - return err; -} - -/* - * XXX This should not really _copy_ te maps, but refcount them. - */ -int maps__clone(struct thread *thread, struct maps *parent) -{ - struct maps *maps = thread->maps; - int err; - struct map *map; - - down_read(&parent->lock); - - maps__for_each_entry(parent, map) { - struct map *new = map__clone(map); - - if (new == NULL) { - err = -ENOMEM; - goto out_unlock; - } - - err = unwind__prepare_access(maps, new, NULL); - if (err) - goto out_unlock; - - maps__insert(maps, new); - map__put(new); - } - - err = 0; -out_unlock: - up_read(&parent->lock); - return err; -} - -static void __maps__insert(struct maps *maps, struct map *map) -{ - struct rb_node **p = &maps->entries.rb_node; - struct rb_node *parent = NULL; - const u64 ip = map->start; - struct map *m; - - while (*p != NULL) { - parent = *p; - m = rb_entry(parent, struct map, rb_node); - if (ip < m->start) - p = &(*p)->rb_left; - else - p = &(*p)->rb_right; - } - - rb_link_node(&map->rb_node, parent, p); - rb_insert_color(&map->rb_node, &maps->entries); - map__get(map); -} - -struct map *maps__find(struct maps *maps, u64 ip) -{ - struct rb_node *p; - struct map *m; - - down_read(&maps->lock); - - p = maps->entries.rb_node; - while (p != NULL) { - m = rb_entry(p, struct map, rb_node); - if (ip < m->start) - p = p->rb_left; - else if (ip >= m->end) - p = p->rb_right; - else - goto out; - } - - m = NULL; -out: - up_read(&maps->lock); - return m; -} - -struct map *maps__first(struct maps *maps) -{ - struct rb_node *first = rb_first(&maps->entries); - - if (first) - return rb_entry(first, struct map, rb_node); - return NULL; -} - static struct map *__map__next(struct map *map) { struct rb_node *next = rb_next(&map->rb_node); |