1#ifndef __PERF_MAP_H 2#define __PERF_MAP_H 3 4#include <linux/compiler.h> 5#include <linux/list.h> 6#include <linux/rbtree.h> 7#include <stdio.h> 8#include <stdbool.h> 9#include "types.h" 10 11enum map_type { 12 MAP__FUNCTION = 0, 13 MAP__VARIABLE, 14}; 15 16#define MAP__NR_TYPES (MAP__VARIABLE + 1) 17 18extern const char *map_type__name[MAP__NR_TYPES]; 19 20struct dso; 21struct ref_reloc_sym; 22struct map_groups; 23struct machine; 24 25struct map { 26 union { 27 struct rb_node rb_node; 28 struct list_head node; 29 }; 30 u64 start; 31 u64 end; 32 u8 /* enum map_type */ type; 33 bool referenced; 34 u32 priv; 35 u64 pgoff; 36 37 /* ip -> dso rip */ 38 u64 (*map_ip)(struct map *, u64); 39 /* dso rip -> ip */ 40 u64 (*unmap_ip)(struct map *, u64); 41 42 struct dso *dso; 43 struct map_groups *groups; 44}; 45 46struct kmap { 47 struct ref_reloc_sym *ref_reloc_sym; 48 struct map_groups *kmaps; 49}; 50 51struct map_groups { 52 struct rb_root maps[MAP__NR_TYPES]; 53 struct list_head removed_maps[MAP__NR_TYPES]; 54 struct machine *machine; 55}; 56 57/* Native host kernel uses -1 as pid index in machine */ 58#define HOST_KERNEL_ID (-1) 59#define DEFAULT_GUEST_KERNEL_ID (0) 60 61struct machine { 62 struct rb_node rb_node; 63 pid_t pid; 64 char *root_dir; 65 struct list_head user_dsos; 66 struct list_head kernel_dsos; 67 struct map_groups kmaps; 68 struct map *vmlinux_maps[MAP__NR_TYPES]; 69}; 70 71static inline 72struct map *machine__kernel_map(struct machine *self, enum map_type type) 73{ 74 return self->vmlinux_maps[type]; 75} 76 77static inline struct kmap *map__kmap(struct map *self) 78{ 79 return (struct kmap *)(self + 1); 80} 81 82static inline u64 map__map_ip(struct map *map, u64 ip) 83{ 84 return ip - map->start + map->pgoff; 85} 86 87static inline u64 map__unmap_ip(struct map *map, u64 ip) 88{ 89 return ip + map->start - map->pgoff; 90} 91 92static inline u64 identity__map_ip(struct map *map __used, u64 ip) 93{ 94 return ip; 95} 96 97 98/* rip/ip <-> addr suitable for passing to `objdump --start-address=` */ 99u64 map__rip_2objdump(struct map *map, u64 rip); 100u64 map__objdump_2ip(struct map *map, u64 addr); 101 102struct symbol; 103 104typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym); 105 106void map__init(struct map *self, enum map_type type, 107 u64 start, u64 end, u64 pgoff, struct dso *dso); 108struct map *map__new(struct list_head *dsos__list, u64 start, u64 len, 109 u64 pgoff, u32 pid, char *filename, 110 enum map_type type); 111void map__delete(struct map *self); 112struct map *map__clone(struct map *self); 113int map__overlap(struct map *l, struct map *r); 114size_t map__fprintf(struct map *self, FILE *fp); 115 116int map__load(struct map *self, symbol_filter_t filter); 117struct symbol *map__find_symbol(struct map *self, 118 u64 addr, symbol_filter_t filter); 119struct symbol *map__find_symbol_by_name(struct map *self, const char *name, 120 symbol_filter_t filter); 121void map__fixup_start(struct map *self); 122void map__fixup_end(struct map *self); 123 124void map__reloc_vmlinux(struct map *self); 125 126size_t __map_groups__fprintf_maps(struct map_groups *self, 127 enum map_type type, int verbose, FILE *fp); 128void maps__insert(struct rb_root *maps, struct map *map); 129void maps__remove(struct rb_root *self, struct map *map); 130struct map *maps__find(struct rb_root *maps, u64 addr); 131void map_groups__init(struct map_groups *self); 132void map_groups__exit(struct map_groups *self); 133int map_groups__clone(struct map_groups *self, 134 struct map_groups *parent, enum map_type type); 135size_t map_groups__fprintf(struct map_groups *self, int verbose, FILE *fp); 136size_t map_groups__fprintf_maps(struct map_groups *self, int verbose, FILE *fp); 137 138typedef void (*machine__process_t)(struct machine *self, void *data); 139 140void machines__process(struct rb_root *self, machine__process_t process, void *data); 141struct machine *machines__add(struct rb_root *self, pid_t pid, 142 const char *root_dir); 143struct machine *machines__find_host(struct rb_root *self); 144struct machine *machines__find(struct rb_root *self, pid_t pid); 145struct machine *machines__findnew(struct rb_root *self, pid_t pid); 146char *machine__mmap_name(struct machine *self, char *bf, size_t size); 147int machine__init(struct machine *self, const char *root_dir, pid_t pid); 148void machine__exit(struct machine *self); 149void machine__delete(struct machine *self); 150 151/* 152 * Default guest kernel is defined by parameter --guestkallsyms 153 * and --guestmodules 154 */ 155static inline bool machine__is_default_guest(struct machine *self) 156{ 157 return self ? self->pid == DEFAULT_GUEST_KERNEL_ID : false; 158} 159 160static inline bool machine__is_host(struct machine *self) 161{ 162 return self ? self->pid == HOST_KERNEL_ID : false; 163} 164 165static inline void map_groups__insert(struct map_groups *self, struct map *map) 166{ 167 maps__insert(&self->maps[map->type], map); 168 map->groups = self; 169} 170 171static inline void map_groups__remove(struct map_groups *self, struct map *map) 172{ 173 maps__remove(&self->maps[map->type], map); 174} 175 176static inline struct map *map_groups__find(struct map_groups *self, 177 enum map_type type, u64 addr) 178{ 179 return maps__find(&self->maps[type], addr); 180} 181 182struct symbol *map_groups__find_symbol(struct map_groups *self, 183 enum map_type type, u64 addr, 184 struct map **mapp, 185 symbol_filter_t filter); 186 187struct symbol *map_groups__find_symbol_by_name(struct map_groups *self, 188 enum map_type type, 189 const char *name, 190 struct map **mapp, 191 symbol_filter_t filter); 192 193static inline 194struct symbol *machine__find_kernel_symbol(struct machine *self, 195 enum map_type type, u64 addr, 196 struct map **mapp, 197 symbol_filter_t filter) 198{ 199 return map_groups__find_symbol(&self->kmaps, type, addr, mapp, filter); 200} 201 202static inline 203struct symbol *machine__find_kernel_function(struct machine *self, u64 addr, 204 struct map **mapp, 205 symbol_filter_t filter) 206{ 207 return machine__find_kernel_symbol(self, MAP__FUNCTION, addr, mapp, filter); 208} 209 210static inline 211struct symbol *map_groups__find_function_by_name(struct map_groups *self, 212 const char *name, struct map **mapp, 213 symbol_filter_t filter) 214{ 215 return map_groups__find_symbol_by_name(self, MAP__FUNCTION, name, mapp, filter); 216} 217 218int map_groups__fixup_overlappings(struct map_groups *self, struct map *map, 219 int verbose, FILE *fp); 220 221struct map *map_groups__find_by_name(struct map_groups *self, 222 enum map_type type, const char *name); 223struct map *machine__new_module(struct machine *self, u64 start, const char *filename); 224 225void map_groups__flush(struct map_groups *self); 226 227#endif /* __PERF_MAP_H */ 228