1 #ifndef __PERF_MAP_H 2 #define __PERF_MAP_H 3 4 #include <linux/atomic.h> 5 #include <linux/compiler.h> 6 #include <linux/list.h> 7 #include <linux/rbtree.h> 8 #include <pthread.h> 9 #include <stdio.h> 10 #include <stdbool.h> 11 #include <linux/types.h> 12 13 enum map_type { 14 MAP__FUNCTION = 0, 15 MAP__VARIABLE, 16 }; 17 18 #define MAP__NR_TYPES (MAP__VARIABLE + 1) 19 20 extern const char *map_type__name[MAP__NR_TYPES]; 21 22 struct dso; 23 struct ip_callchain; 24 struct ref_reloc_sym; 25 struct map_groups; 26 struct machine; 27 struct perf_evsel; 28 29 struct map { 30 union { 31 struct rb_node rb_node; 32 struct list_head node; 33 }; 34 u64 start; 35 u64 end; 36 u8 /* enum map_type */ type; 37 bool erange_warned; 38 u32 priv; 39 u32 prot; 40 u32 flags; 41 u64 pgoff; 42 u64 reloc; 43 u32 maj, min; /* only valid for MMAP2 record */ 44 u64 ino; /* only valid for MMAP2 record */ 45 u64 ino_generation;/* only valid for MMAP2 record */ 46 47 /* ip -> dso rip */ 48 u64 (*map_ip)(struct map *, u64); 49 /* dso rip -> ip */ 50 u64 (*unmap_ip)(struct map *, u64); 51 52 struct dso *dso; 53 struct map_groups *groups; 54 atomic_t refcnt; 55 }; 56 57 struct kmap { 58 struct ref_reloc_sym *ref_reloc_sym; 59 struct map_groups *kmaps; 60 }; 61 62 struct maps { 63 struct rb_root entries; 64 pthread_rwlock_t lock; 65 }; 66 67 struct map_groups { 68 struct maps maps[MAP__NR_TYPES]; 69 struct machine *machine; 70 atomic_t refcnt; 71 }; 72 73 struct map_groups *map_groups__new(struct machine *machine); 74 void map_groups__delete(struct map_groups *mg); 75 bool map_groups__empty(struct map_groups *mg); 76 77 static inline struct map_groups *map_groups__get(struct map_groups *mg) 78 { 79 if (mg) 80 atomic_inc(&mg->refcnt); 81 return mg; 82 } 83 84 void map_groups__put(struct map_groups *mg); 85 86 struct kmap *map__kmap(struct map *map); 87 struct map_groups *map__kmaps(struct map *map); 88 89 static inline u64 map__map_ip(struct map *map, u64 ip) 90 { 91 return ip - map->start + map->pgoff; 92 } 93 94 static inline u64 map__unmap_ip(struct map *map, u64 ip) 95 { 96 return ip + map->start - map->pgoff; 97 } 98 99 static inline u64 identity__map_ip(struct map *map __maybe_unused, u64 ip) 100 { 101 return ip; 102 } 103 104 105 /* rip/ip <-> addr suitable for passing to `objdump --start-address=` */ 106 u64 map__rip_2objdump(struct map *map, u64 rip); 107 108 /* objdump address -> memory address */ 109 u64 map__objdump_2mem(struct map *map, u64 ip); 110 111 struct symbol; 112 struct thread; 113 114 /* map__for_each_symbol - iterate over the symbols in the given map 115 * 116 * @map: the 'struct map *' in which symbols itereated 117 * @pos: the 'struct symbol *' to use as a loop cursor 118 * @n: the 'struct rb_node *' to use as a temporary storage 119 * Note: caller must ensure map->dso is not NULL (map is loaded). 120 */ 121 #define map__for_each_symbol(map, pos, n) \ 122 dso__for_each_symbol(map->dso, pos, n, map->type) 123 124 /* map__for_each_symbol_with_name - iterate over the symbols in the given map 125 * that have the given name 126 * 127 * @map: the 'struct map *' in which symbols itereated 128 * @sym_name: the symbol name 129 * @pos: the 'struct symbol *' to use as a loop cursor 130 * @filter: to use when loading the DSO 131 */ 132 #define __map__for_each_symbol_by_name(map, sym_name, pos, filter) \ 133 for (pos = map__find_symbol_by_name(map, sym_name, filter); \ 134 pos && arch__compare_symbol_names(pos->name, sym_name) == 0; \ 135 pos = symbol__next_by_name(pos)) 136 137 #define map__for_each_symbol_by_name(map, sym_name, pos) \ 138 __map__for_each_symbol_by_name(map, sym_name, (pos), NULL) 139 140 typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym); 141 142 int arch__compare_symbol_names(const char *namea, const char *nameb); 143 void map__init(struct map *map, enum map_type type, 144 u64 start, u64 end, u64 pgoff, struct dso *dso); 145 struct map *map__new(struct machine *machine, u64 start, u64 len, 146 u64 pgoff, u32 pid, u32 d_maj, u32 d_min, u64 ino, 147 u64 ino_gen, u32 prot, u32 flags, 148 char *filename, enum map_type type, struct thread *thread); 149 struct map *map__new2(u64 start, struct dso *dso, enum map_type type); 150 void map__delete(struct map *map); 151 struct map *map__clone(struct map *map); 152 153 static inline struct map *map__get(struct map *map) 154 { 155 if (map) 156 atomic_inc(&map->refcnt); 157 return map; 158 } 159 160 void map__put(struct map *map); 161 162 static inline void __map__zput(struct map **map) 163 { 164 map__put(*map); 165 *map = NULL; 166 } 167 168 #define map__zput(map) __map__zput(&map) 169 170 int map__overlap(struct map *l, struct map *r); 171 size_t map__fprintf(struct map *map, FILE *fp); 172 size_t map__fprintf_dsoname(struct map *map, FILE *fp); 173 int map__fprintf_srcline(struct map *map, u64 addr, const char *prefix, 174 FILE *fp); 175 176 int map__load(struct map *map, symbol_filter_t filter); 177 struct symbol *map__find_symbol(struct map *map, 178 u64 addr, symbol_filter_t filter); 179 struct symbol *map__find_symbol_by_name(struct map *map, const char *name, 180 symbol_filter_t filter); 181 void map__fixup_start(struct map *map); 182 void map__fixup_end(struct map *map); 183 184 void map__reloc_vmlinux(struct map *map); 185 186 size_t __map_groups__fprintf_maps(struct map_groups *mg, enum map_type type, 187 FILE *fp); 188 void maps__insert(struct maps *maps, struct map *map); 189 void maps__remove(struct maps *maps, struct map *map); 190 struct map *maps__find(struct maps *maps, u64 addr); 191 struct map *maps__first(struct maps *maps); 192 struct map *map__next(struct map *map); 193 struct symbol *maps__find_symbol_by_name(struct maps *maps, const char *name, 194 struct map **mapp, symbol_filter_t filter); 195 void map_groups__init(struct map_groups *mg, struct machine *machine); 196 void map_groups__exit(struct map_groups *mg); 197 int map_groups__clone(struct map_groups *mg, 198 struct map_groups *parent, enum map_type type); 199 size_t map_groups__fprintf(struct map_groups *mg, FILE *fp); 200 201 int maps__set_kallsyms_ref_reloc_sym(struct map **maps, const char *symbol_name, 202 u64 addr); 203 204 static inline void map_groups__insert(struct map_groups *mg, struct map *map) 205 { 206 maps__insert(&mg->maps[map->type], map); 207 map->groups = mg; 208 } 209 210 static inline void map_groups__remove(struct map_groups *mg, struct map *map) 211 { 212 maps__remove(&mg->maps[map->type], map); 213 } 214 215 static inline struct map *map_groups__find(struct map_groups *mg, 216 enum map_type type, u64 addr) 217 { 218 return maps__find(&mg->maps[type], addr); 219 } 220 221 static inline struct map *map_groups__first(struct map_groups *mg, 222 enum map_type type) 223 { 224 return maps__first(&mg->maps[type]); 225 } 226 227 static inline struct map *map_groups__next(struct map *map) 228 { 229 return map__next(map); 230 } 231 232 struct symbol *map_groups__find_symbol(struct map_groups *mg, 233 enum map_type type, u64 addr, 234 struct map **mapp, 235 symbol_filter_t filter); 236 237 struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg, 238 enum map_type type, 239 const char *name, 240 struct map **mapp, 241 symbol_filter_t filter); 242 243 struct addr_map_symbol; 244 245 int map_groups__find_ams(struct addr_map_symbol *ams, symbol_filter_t filter); 246 247 static inline 248 struct symbol *map_groups__find_function_by_name(struct map_groups *mg, 249 const char *name, struct map **mapp, 250 symbol_filter_t filter) 251 { 252 return map_groups__find_symbol_by_name(mg, MAP__FUNCTION, name, mapp, filter); 253 } 254 255 int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map, 256 FILE *fp); 257 258 struct map *map_groups__find_by_name(struct map_groups *mg, 259 enum map_type type, const char *name); 260 261 bool __map__is_kernel(const struct map *map); 262 263 static inline bool __map__is_kmodule(const struct map *map) 264 { 265 return !__map__is_kernel(map); 266 } 267 268 #endif /* __PERF_MAP_H */ 269