238 lines
6.6 KiB
C
238 lines
6.6 KiB
C
#ifndef __PERF_MAP_H
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#define __PERF_MAP_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 <stdio.h>
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#include <stdbool.h>
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#include "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 ref_reloc_sym;
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struct map_groups;
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struct machine;
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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 referenced;
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u32 priv;
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u64 pgoff;
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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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};
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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 map_groups {
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struct rb_root maps[MAP__NR_TYPES];
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struct list_head removed_maps[MAP__NR_TYPES];
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struct machine *machine;
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};
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/* Native host kernel uses -1 as pid index in machine */
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#define HOST_KERNEL_ID (-1)
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#define DEFAULT_GUEST_KERNEL_ID (0)
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struct machine {
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struct rb_node rb_node;
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pid_t pid;
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char *root_dir;
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struct list_head user_dsos;
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struct list_head kernel_dsos;
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struct map_groups kmaps;
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struct map *vmlinux_maps[MAP__NR_TYPES];
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};
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static inline
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struct map *machine__kernel_map(struct machine *self, enum map_type type)
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{
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return self->vmlinux_maps[type];
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}
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static inline struct kmap *map__kmap(struct map *self)
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{
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return (struct kmap *)(self + 1);
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}
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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 __used, 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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u64 map__objdump_2ip(struct map *map, u64 addr);
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struct symbol;
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typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
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void map__init(struct map *self, 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 list_head *dsos__list, u64 start, u64 len,
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u64 pgoff, u32 pid, char *filename,
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enum map_type type);
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void map__delete(struct map *self);
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struct map *map__clone(struct map *self);
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int map__overlap(struct map *l, struct map *r);
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size_t map__fprintf(struct map *self, FILE *fp);
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int map__load(struct map *self, symbol_filter_t filter);
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struct symbol *map__find_symbol(struct map *self,
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u64 addr, symbol_filter_t filter);
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struct symbol *map__find_symbol_by_name(struct map *self, const char *name,
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symbol_filter_t filter);
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void map__fixup_start(struct map *self);
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void map__fixup_end(struct map *self);
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void map__reloc_vmlinux(struct map *self);
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size_t __map_groups__fprintf_maps(struct map_groups *self,
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enum map_type type, int verbose, FILE *fp);
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void maps__insert(struct rb_root *maps, struct map *map);
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void maps__remove(struct rb_root *self, struct map *map);
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struct map *maps__find(struct rb_root *maps, u64 addr);
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void map_groups__init(struct map_groups *self);
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void map_groups__exit(struct map_groups *self);
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int map_groups__clone(struct map_groups *self,
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struct map_groups *parent, enum map_type type);
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size_t map_groups__fprintf(struct map_groups *self, int verbose, FILE *fp);
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size_t map_groups__fprintf_maps(struct map_groups *self, int verbose, FILE *fp);
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typedef void (*machine__process_t)(struct machine *self, void *data);
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void machines__process(struct rb_root *self, machine__process_t process, void *data);
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struct machine *machines__add(struct rb_root *self, pid_t pid,
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const char *root_dir);
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struct machine *machines__find_host(struct rb_root *self);
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struct machine *machines__find(struct rb_root *self, pid_t pid);
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struct machine *machines__findnew(struct rb_root *self, pid_t pid);
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char *machine__mmap_name(struct machine *self, char *bf, size_t size);
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int machine__init(struct machine *self, const char *root_dir, pid_t pid);
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void machine__exit(struct machine *self);
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void machine__delete(struct machine *self);
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/*
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* Default guest kernel is defined by parameter --guestkallsyms
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* and --guestmodules
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*/
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static inline bool machine__is_default_guest(struct machine *self)
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{
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return self ? self->pid == DEFAULT_GUEST_KERNEL_ID : false;
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}
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static inline bool machine__is_host(struct machine *self)
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{
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return self ? self->pid == HOST_KERNEL_ID : false;
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}
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static inline void map_groups__insert(struct map_groups *self, struct map *map)
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{
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maps__insert(&self->maps[map->type], map);
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map->groups = self;
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}
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static inline void map_groups__remove(struct map_groups *self, struct map *map)
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{
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maps__remove(&self->maps[map->type], map);
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}
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static inline struct map *map_groups__find(struct map_groups *self,
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enum map_type type, u64 addr)
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{
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return maps__find(&self->maps[type], addr);
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}
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struct symbol *map_groups__find_symbol(struct map_groups *self,
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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 *self,
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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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static inline
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struct symbol *machine__find_kernel_symbol(struct machine *self,
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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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{
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return map_groups__find_symbol(&self->kmaps, type, addr, mapp, filter);
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}
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static inline
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struct symbol *machine__find_kernel_function(struct machine *self, u64 addr,
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struct map **mapp,
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symbol_filter_t filter)
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{
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return machine__find_kernel_symbol(self, MAP__FUNCTION, addr, mapp, filter);
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}
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static inline
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struct symbol *map_groups__find_function_by_name(struct map_groups *self,
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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(self, MAP__FUNCTION, name, mapp, filter);
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}
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static inline
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struct symbol *machine__find_kernel_function_by_name(struct machine *self,
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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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{
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return map_groups__find_function_by_name(&self->kmaps, name, mapp,
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filter);
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}
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int map_groups__fixup_overlappings(struct map_groups *self, struct map *map,
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int verbose, FILE *fp);
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struct map *map_groups__find_by_name(struct map_groups *self,
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enum map_type type, const char *name);
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struct map *machine__new_module(struct machine *self, u64 start, const char *filename);
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void map_groups__flush(struct map_groups *self);
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#endif /* __PERF_MAP_H */
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