1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __PERF_MAP_H 3 #define __PERF_MAP_H 4 5 #include <linux/refcount.h> 6 #include <linux/compiler.h> 7 #include <linux/list.h> 8 #include <linux/rbtree.h> 9 #include <pthread.h> 10 #include <stdio.h> 11 #include <string.h> 12 #include <stdbool.h> 13 #include <linux/types.h> 14 #include "rwsem.h" 15 16 struct dso; 17 struct ip_callchain; 18 struct ref_reloc_sym; 19 struct map_groups; 20 struct machine; 21 struct perf_evsel; 22 23 struct map { 24 union { 25 struct rb_node rb_node; 26 struct list_head node; 27 }; 28 u64 start; 29 u64 end; 30 bool erange_warned; 31 u32 priv; 32 u32 prot; 33 u32 flags; 34 u64 pgoff; 35 u64 reloc; 36 u32 maj, min; /* only valid for MMAP2 record */ 37 u64 ino; /* only valid for MMAP2 record */ 38 u64 ino_generation;/* only valid for MMAP2 record */ 39 40 /* ip -> dso rip */ 41 u64 (*map_ip)(struct map *, u64); 42 /* dso rip -> ip */ 43 u64 (*unmap_ip)(struct map *, u64); 44 45 struct dso *dso; 46 struct map_groups *groups; 47 refcount_t refcnt; 48 }; 49 50 #define KMAP_NAME_LEN 256 51 52 struct kmap { 53 struct ref_reloc_sym *ref_reloc_sym; 54 struct map_groups *kmaps; 55 char name[KMAP_NAME_LEN]; 56 }; 57 58 struct maps { 59 struct rb_root entries; 60 struct rw_semaphore lock; 61 }; 62 63 struct map_groups { 64 struct maps maps; 65 struct machine *machine; 66 refcount_t refcnt; 67 }; 68 69 struct map_groups *map_groups__new(struct machine *machine); 70 void map_groups__delete(struct map_groups *mg); 71 bool map_groups__empty(struct map_groups *mg); 72 73 static inline struct map_groups *map_groups__get(struct map_groups *mg) 74 { 75 if (mg) 76 refcount_inc(&mg->refcnt); 77 return mg; 78 } 79 80 void map_groups__put(struct map_groups *mg); 81 82 struct kmap *__map__kmap(struct map *map); 83 struct kmap *map__kmap(struct map *map); 84 struct map_groups *map__kmaps(struct map *map); 85 86 static inline u64 map__map_ip(struct map *map, u64 ip) 87 { 88 return ip - map->start + map->pgoff; 89 } 90 91 static inline u64 map__unmap_ip(struct map *map, u64 ip) 92 { 93 return ip + map->start - map->pgoff; 94 } 95 96 static inline u64 identity__map_ip(struct map *map __maybe_unused, u64 ip) 97 { 98 return ip; 99 } 100 101 static inline size_t map__size(const struct map *map) 102 { 103 return map->end - map->start; 104 } 105 106 /* rip/ip <-> addr suitable for passing to `objdump --start-address=` */ 107 u64 map__rip_2objdump(struct map *map, u64 rip); 108 109 /* objdump address -> memory address */ 110 u64 map__objdump_2mem(struct map *map, u64 ip); 111 112 struct symbol; 113 struct thread; 114 115 /* map__for_each_symbol - iterate over the symbols in the given map 116 * 117 * @map: the 'struct map *' in which symbols itereated 118 * @pos: the 'struct symbol *' to use as a loop cursor 119 * @n: the 'struct rb_node *' to use as a temporary storage 120 * Note: caller must ensure map->dso is not NULL (map is loaded). 121 */ 122 #define map__for_each_symbol(map, pos, n) \ 123 dso__for_each_symbol(map->dso, pos, n) 124 125 /* map__for_each_symbol_with_name - iterate over the symbols in the given map 126 * that have the given name 127 * 128 * @map: the 'struct map *' in which symbols itereated 129 * @sym_name: the symbol name 130 * @pos: the 'struct symbol *' to use as a loop cursor 131 */ 132 #define __map__for_each_symbol_by_name(map, sym_name, pos) \ 133 for (pos = map__find_symbol_by_name(map, sym_name); \ 134 pos && \ 135 !symbol__match_symbol_name(pos->name, sym_name, \ 136 SYMBOL_TAG_INCLUDE__DEFAULT_ONLY); \ 137 pos = symbol__next_by_name(pos)) 138 139 #define map__for_each_symbol_by_name(map, sym_name, pos) \ 140 __map__for_each_symbol_by_name(map, sym_name, (pos)) 141 142 void map__init(struct map *map, 143 u64 start, u64 end, u64 pgoff, struct dso *dso); 144 struct map *map__new(struct machine *machine, u64 start, u64 len, 145 u64 pgoff, u32 d_maj, u32 d_min, u64 ino, 146 u64 ino_gen, u32 prot, u32 flags, 147 char *filename, struct thread *thread); 148 struct map *map__new2(u64 start, struct dso *dso); 149 void map__delete(struct map *map); 150 struct map *map__clone(struct map *map); 151 152 static inline struct map *map__get(struct map *map) 153 { 154 if (map) 155 refcount_inc(&map->refcnt); 156 return map; 157 } 158 159 void map__put(struct map *map); 160 161 static inline void __map__zput(struct map **map) 162 { 163 map__put(*map); 164 *map = NULL; 165 } 166 167 #define map__zput(map) __map__zput(&map) 168 169 size_t map__fprintf(struct map *map, FILE *fp); 170 size_t map__fprintf_dsoname(struct map *map, FILE *fp); 171 char *map__srcline(struct map *map, u64 addr, struct symbol *sym); 172 int map__fprintf_srcline(struct map *map, u64 addr, const char *prefix, 173 FILE *fp); 174 175 int map__load(struct map *map); 176 struct symbol *map__find_symbol(struct map *map, u64 addr); 177 struct symbol *map__find_symbol_by_name(struct map *map, const char *name); 178 void map__fixup_start(struct map *map); 179 void map__fixup_end(struct map *map); 180 181 void map__reloc_vmlinux(struct map *map); 182 183 void maps__insert(struct maps *maps, struct map *map); 184 void maps__remove(struct maps *maps, struct map *map); 185 struct map *maps__find(struct maps *maps, u64 addr); 186 struct map *maps__first(struct maps *maps); 187 struct map *map__next(struct map *map); 188 struct symbol *maps__find_symbol_by_name(struct maps *maps, const char *name, 189 struct map **mapp); 190 void map_groups__init(struct map_groups *mg, struct machine *machine); 191 void map_groups__exit(struct map_groups *mg); 192 int map_groups__clone(struct thread *thread, 193 struct map_groups *parent); 194 size_t map_groups__fprintf(struct map_groups *mg, FILE *fp); 195 196 int map__set_kallsyms_ref_reloc_sym(struct map *map, const char *symbol_name, 197 u64 addr); 198 199 static inline void map_groups__insert(struct map_groups *mg, struct map *map) 200 { 201 maps__insert(&mg->maps, map); 202 map->groups = mg; 203 } 204 205 static inline void map_groups__remove(struct map_groups *mg, struct map *map) 206 { 207 maps__remove(&mg->maps, map); 208 } 209 210 static inline struct map *map_groups__find(struct map_groups *mg, u64 addr) 211 { 212 return maps__find(&mg->maps, addr); 213 } 214 215 struct map *map_groups__first(struct map_groups *mg); 216 217 static inline struct map *map_groups__next(struct map *map) 218 { 219 return map__next(map); 220 } 221 222 struct symbol *map_groups__find_symbol(struct map_groups *mg, 223 u64 addr, struct map **mapp); 224 225 struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg, 226 const char *name, 227 struct map **mapp); 228 229 struct addr_map_symbol; 230 231 int map_groups__find_ams(struct addr_map_symbol *ams); 232 233 int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map, 234 FILE *fp); 235 236 struct map *map_groups__find_by_name(struct map_groups *mg, const char *name); 237 238 bool __map__is_kernel(const struct map *map); 239 bool __map__is_extra_kernel_map(const struct map *map); 240 241 static inline bool __map__is_kmodule(const struct map *map) 242 { 243 return !__map__is_kernel(map) && !__map__is_extra_kernel_map(map); 244 } 245 246 bool map__has_symbols(const struct map *map); 247 248 #define ENTRY_TRAMPOLINE_NAME "__entry_SYSCALL_64_trampoline" 249 250 static inline bool is_entry_trampoline(const char *name) 251 { 252 return !strcmp(name, ENTRY_TRAMPOLINE_NAME); 253 } 254 255 #endif /* __PERF_MAP_H */ 256