269 lines
7.3 KiB
C
269 lines
7.3 KiB
C
#ifndef __PERF_MAP_H
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#define __PERF_MAP_H
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#include <linux/atomic.h>
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#include <linux/compiler.h>
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#include <linux/list.h>
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#include <linux/rbtree.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdbool.h>
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#include <linux/types.h>
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enum map_type {
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MAP__FUNCTION = 0,
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MAP__VARIABLE,
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};
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#define MAP__NR_TYPES (MAP__VARIABLE + 1)
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extern const char *map_type__name[MAP__NR_TYPES];
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struct dso;
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struct ip_callchain;
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struct ref_reloc_sym;
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struct map_groups;
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struct machine;
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struct perf_evsel;
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struct map {
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union {
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struct rb_node rb_node;
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struct list_head node;
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};
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u64 start;
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u64 end;
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u8 /* enum map_type */ type;
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bool erange_warned;
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u32 priv;
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u32 prot;
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u32 flags;
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u64 pgoff;
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u64 reloc;
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u32 maj, min; /* only valid for MMAP2 record */
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u64 ino; /* only valid for MMAP2 record */
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u64 ino_generation;/* only valid for MMAP2 record */
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/* ip -> dso rip */
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u64 (*map_ip)(struct map *, u64);
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/* dso rip -> ip */
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u64 (*unmap_ip)(struct map *, u64);
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struct dso *dso;
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struct map_groups *groups;
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atomic_t refcnt;
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};
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struct kmap {
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struct ref_reloc_sym *ref_reloc_sym;
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struct map_groups *kmaps;
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};
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struct maps {
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struct rb_root entries;
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pthread_rwlock_t lock;
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};
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struct map_groups {
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struct maps maps[MAP__NR_TYPES];
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struct machine *machine;
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atomic_t refcnt;
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};
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struct map_groups *map_groups__new(struct machine *machine);
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void map_groups__delete(struct map_groups *mg);
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bool map_groups__empty(struct map_groups *mg);
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static inline struct map_groups *map_groups__get(struct map_groups *mg)
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{
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if (mg)
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atomic_inc(&mg->refcnt);
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return mg;
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}
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void map_groups__put(struct map_groups *mg);
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struct kmap *map__kmap(struct map *map);
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struct map_groups *map__kmaps(struct map *map);
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static inline u64 map__map_ip(struct map *map, u64 ip)
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{
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return ip - map->start + map->pgoff;
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}
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static inline u64 map__unmap_ip(struct map *map, u64 ip)
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{
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return ip + map->start - map->pgoff;
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}
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static inline u64 identity__map_ip(struct map *map __maybe_unused, u64 ip)
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{
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return ip;
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}
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/* rip/ip <-> addr suitable for passing to `objdump --start-address=` */
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u64 map__rip_2objdump(struct map *map, u64 rip);
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/* objdump address -> memory address */
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u64 map__objdump_2mem(struct map *map, u64 ip);
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struct symbol;
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struct thread;
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/* map__for_each_symbol - iterate over the symbols in the given map
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*
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* @map: the 'struct map *' in which symbols itereated
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* @pos: the 'struct symbol *' to use as a loop cursor
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* @n: the 'struct rb_node *' to use as a temporary storage
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* Note: caller must ensure map->dso is not NULL (map is loaded).
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*/
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#define map__for_each_symbol(map, pos, n) \
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dso__for_each_symbol(map->dso, pos, n, map->type)
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/* map__for_each_symbol_with_name - iterate over the symbols in the given map
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* that have the given name
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*
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* @map: the 'struct map *' in which symbols itereated
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* @sym_name: the symbol name
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* @pos: the 'struct symbol *' to use as a loop cursor
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* @filter: to use when loading the DSO
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*/
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#define __map__for_each_symbol_by_name(map, sym_name, pos, filter) \
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for (pos = map__find_symbol_by_name(map, sym_name, filter); \
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pos && arch__compare_symbol_names(pos->name, sym_name) == 0; \
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pos = symbol__next_by_name(pos))
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#define map__for_each_symbol_by_name(map, sym_name, pos) \
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__map__for_each_symbol_by_name(map, sym_name, (pos), NULL)
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typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
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int arch__compare_symbol_names(const char *namea, const char *nameb);
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void map__init(struct map *map, enum map_type type,
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u64 start, u64 end, u64 pgoff, struct dso *dso);
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struct map *map__new(struct machine *machine, u64 start, u64 len,
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u64 pgoff, u32 pid, u32 d_maj, u32 d_min, u64 ino,
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u64 ino_gen, u32 prot, u32 flags,
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char *filename, enum map_type type, struct thread *thread);
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struct map *map__new2(u64 start, struct dso *dso, enum map_type type);
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void map__delete(struct map *map);
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struct map *map__clone(struct map *map);
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static inline struct map *map__get(struct map *map)
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{
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if (map)
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atomic_inc(&map->refcnt);
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return map;
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}
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void map__put(struct map *map);
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static inline void __map__zput(struct map **map)
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{
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map__put(*map);
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*map = NULL;
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}
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#define map__zput(map) __map__zput(&map)
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int map__overlap(struct map *l, struct map *r);
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size_t map__fprintf(struct map *map, FILE *fp);
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size_t map__fprintf_dsoname(struct map *map, FILE *fp);
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int map__fprintf_srcline(struct map *map, u64 addr, const char *prefix,
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FILE *fp);
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int map__load(struct map *map, symbol_filter_t filter);
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struct symbol *map__find_symbol(struct map *map,
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u64 addr, symbol_filter_t filter);
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struct symbol *map__find_symbol_by_name(struct map *map, const char *name,
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symbol_filter_t filter);
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void map__fixup_start(struct map *map);
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void map__fixup_end(struct map *map);
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void map__reloc_vmlinux(struct map *map);
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size_t __map_groups__fprintf_maps(struct map_groups *mg, enum map_type type,
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FILE *fp);
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void maps__insert(struct maps *maps, struct map *map);
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void maps__remove(struct maps *maps, struct map *map);
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struct map *maps__find(struct maps *maps, u64 addr);
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struct map *maps__first(struct maps *maps);
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struct map *map__next(struct map *map);
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struct symbol *maps__find_symbol_by_name(struct maps *maps, const char *name,
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struct map **mapp, symbol_filter_t filter);
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void map_groups__init(struct map_groups *mg, struct machine *machine);
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void map_groups__exit(struct map_groups *mg);
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int map_groups__clone(struct map_groups *mg,
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struct map_groups *parent, enum map_type type);
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size_t map_groups__fprintf(struct map_groups *mg, FILE *fp);
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int maps__set_kallsyms_ref_reloc_sym(struct map **maps, const char *symbol_name,
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u64 addr);
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static inline void map_groups__insert(struct map_groups *mg, struct map *map)
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{
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maps__insert(&mg->maps[map->type], map);
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map->groups = mg;
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}
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static inline void map_groups__remove(struct map_groups *mg, struct map *map)
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{
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maps__remove(&mg->maps[map->type], map);
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}
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static inline struct map *map_groups__find(struct map_groups *mg,
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enum map_type type, u64 addr)
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{
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return maps__find(&mg->maps[type], addr);
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}
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static inline struct map *map_groups__first(struct map_groups *mg,
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enum map_type type)
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{
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return maps__first(&mg->maps[type]);
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}
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static inline struct map *map_groups__next(struct map *map)
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{
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return map__next(map);
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}
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struct symbol *map_groups__find_symbol(struct map_groups *mg,
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enum map_type type, u64 addr,
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struct map **mapp,
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symbol_filter_t filter);
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struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg,
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enum map_type type,
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const char *name,
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struct map **mapp,
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symbol_filter_t filter);
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struct addr_map_symbol;
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int map_groups__find_ams(struct addr_map_symbol *ams, symbol_filter_t filter);
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static inline
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struct symbol *map_groups__find_function_by_name(struct map_groups *mg,
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const char *name, struct map **mapp,
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symbol_filter_t filter)
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{
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return map_groups__find_symbol_by_name(mg, MAP__FUNCTION, name, mapp, filter);
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}
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int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map,
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FILE *fp);
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struct map *map_groups__find_by_name(struct map_groups *mg,
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enum map_type type, const char *name);
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bool __map__is_kernel(const struct map *map);
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static inline bool __map__is_kmodule(const struct map *map)
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{
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return !__map__is_kernel(map);
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}
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#endif /* __PERF_MAP_H */
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