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 11 enum map_type { 12 MAP__FUNCTION = 0, 13 MAP__VARIABLE, 14 }; 15 16 #define MAP__NR_TYPES (MAP__VARIABLE + 1) 17 18 extern const char *map_type__name[MAP__NR_TYPES]; 19 20 struct dso; 21 struct ip_callchain; 22 struct ref_reloc_sym; 23 struct map_groups; 24 struct machine; 25 struct perf_evsel; 26 27 struct map { 28 union { 29 struct rb_node rb_node; 30 struct list_head node; 31 }; 32 u64 start; 33 u64 end; 34 u8 /* enum map_type */ type; 35 bool referenced; 36 u32 priv; 37 u64 pgoff; 38 39 /* ip -> dso rip */ 40 u64 (*map_ip)(struct map *, u64); 41 /* dso rip -> ip */ 42 u64 (*unmap_ip)(struct map *, u64); 43 44 struct dso *dso; 45 struct map_groups *groups; 46 }; 47 48 struct kmap { 49 struct ref_reloc_sym *ref_reloc_sym; 50 struct map_groups *kmaps; 51 }; 52 53 struct map_groups { 54 struct rb_root maps[MAP__NR_TYPES]; 55 struct list_head removed_maps[MAP__NR_TYPES]; 56 struct machine *machine; 57 }; 58 59 /* Native host kernel uses -1 as pid index in machine */ 60 #define HOST_KERNEL_ID (-1) 61 #define DEFAULT_GUEST_KERNEL_ID (0) 62 63 struct machine { 64 struct rb_node rb_node; 65 pid_t pid; 66 u16 id_hdr_size; 67 char *root_dir; 68 struct rb_root threads; 69 struct list_head dead_threads; 70 struct thread *last_match; 71 struct list_head user_dsos; 72 struct list_head kernel_dsos; 73 struct map_groups kmaps; 74 struct map *vmlinux_maps[MAP__NR_TYPES]; 75 }; 76 77 static inline 78 struct map *machine__kernel_map(struct machine *self, enum map_type type) 79 { 80 return self->vmlinux_maps[type]; 81 } 82 83 static inline struct kmap *map__kmap(struct map *self) 84 { 85 return (struct kmap *)(self + 1); 86 } 87 88 static inline u64 map__map_ip(struct map *map, u64 ip) 89 { 90 return ip - map->start + map->pgoff; 91 } 92 93 static inline u64 map__unmap_ip(struct map *map, u64 ip) 94 { 95 return ip + map->start - map->pgoff; 96 } 97 98 static inline u64 identity__map_ip(struct map *map __used, u64 ip) 99 { 100 return ip; 101 } 102 103 104 /* rip/ip <-> addr suitable for passing to `objdump --start-address=` */ 105 u64 map__rip_2objdump(struct map *map, u64 rip); 106 u64 map__objdump_2ip(struct map *map, u64 addr); 107 108 struct symbol; 109 110 typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym); 111 112 void map__init(struct map *self, enum map_type type, 113 u64 start, u64 end, u64 pgoff, struct dso *dso); 114 struct map *map__new(struct list_head *dsos__list, u64 start, u64 len, 115 u64 pgoff, u32 pid, char *filename, 116 enum map_type type); 117 void map__delete(struct map *self); 118 struct map *map__clone(struct map *self); 119 int map__overlap(struct map *l, struct map *r); 120 size_t map__fprintf(struct map *self, FILE *fp); 121 size_t map__fprintf_dsoname(struct map *map, FILE *fp); 122 123 int map__load(struct map *self, symbol_filter_t filter); 124 struct symbol *map__find_symbol(struct map *self, 125 u64 addr, symbol_filter_t filter); 126 struct symbol *map__find_symbol_by_name(struct map *self, const char *name, 127 symbol_filter_t filter); 128 void map__fixup_start(struct map *self); 129 void map__fixup_end(struct map *self); 130 131 void map__reloc_vmlinux(struct map *self); 132 133 size_t __map_groups__fprintf_maps(struct map_groups *mg, 134 enum map_type type, int verbose, FILE *fp); 135 void maps__insert(struct rb_root *maps, struct map *map); 136 void maps__remove(struct rb_root *maps, struct map *map); 137 struct map *maps__find(struct rb_root *maps, u64 addr); 138 void map_groups__init(struct map_groups *mg); 139 void map_groups__exit(struct map_groups *mg); 140 int map_groups__clone(struct map_groups *mg, 141 struct map_groups *parent, enum map_type type); 142 size_t map_groups__fprintf(struct map_groups *mg, int verbose, FILE *fp); 143 size_t map_groups__fprintf_maps(struct map_groups *mg, int verbose, FILE *fp); 144 145 typedef void (*machine__process_t)(struct machine *self, void *data); 146 147 void machines__process(struct rb_root *self, machine__process_t process, void *data); 148 struct machine *machines__add(struct rb_root *self, pid_t pid, 149 const char *root_dir); 150 struct machine *machines__find_host(struct rb_root *self); 151 struct machine *machines__find(struct rb_root *self, pid_t pid); 152 struct machine *machines__findnew(struct rb_root *self, pid_t pid); 153 char *machine__mmap_name(struct machine *self, char *bf, size_t size); 154 int machine__init(struct machine *self, const char *root_dir, pid_t pid); 155 void machine__exit(struct machine *self); 156 void machine__delete(struct machine *self); 157 158 int machine__resolve_callchain(struct machine *machine, 159 struct perf_evsel *evsel, struct thread *thread, 160 struct ip_callchain *chain, 161 struct symbol **parent); 162 int maps__set_kallsyms_ref_reloc_sym(struct map **maps, const char *symbol_name, 163 u64 addr); 164 165 /* 166 * Default guest kernel is defined by parameter --guestkallsyms 167 * and --guestmodules 168 */ 169 static inline bool machine__is_default_guest(struct machine *self) 170 { 171 return self ? self->pid == DEFAULT_GUEST_KERNEL_ID : false; 172 } 173 174 static inline bool machine__is_host(struct machine *self) 175 { 176 return self ? self->pid == HOST_KERNEL_ID : false; 177 } 178 179 static inline void map_groups__insert(struct map_groups *mg, struct map *map) 180 { 181 maps__insert(&mg->maps[map->type], map); 182 map->groups = mg; 183 } 184 185 static inline void map_groups__remove(struct map_groups *mg, struct map *map) 186 { 187 maps__remove(&mg->maps[map->type], map); 188 } 189 190 static inline struct map *map_groups__find(struct map_groups *mg, 191 enum map_type type, u64 addr) 192 { 193 return maps__find(&mg->maps[type], addr); 194 } 195 196 struct symbol *map_groups__find_symbol(struct map_groups *mg, 197 enum map_type type, u64 addr, 198 struct map **mapp, 199 symbol_filter_t filter); 200 201 struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg, 202 enum map_type type, 203 const char *name, 204 struct map **mapp, 205 symbol_filter_t filter); 206 207 208 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid); 209 void machine__remove_thread(struct machine *machine, struct thread *th); 210 211 size_t machine__fprintf(struct machine *machine, FILE *fp); 212 213 static inline 214 struct symbol *machine__find_kernel_symbol(struct machine *self, 215 enum map_type type, u64 addr, 216 struct map **mapp, 217 symbol_filter_t filter) 218 { 219 return map_groups__find_symbol(&self->kmaps, type, addr, mapp, filter); 220 } 221 222 static inline 223 struct symbol *machine__find_kernel_function(struct machine *self, u64 addr, 224 struct map **mapp, 225 symbol_filter_t filter) 226 { 227 return machine__find_kernel_symbol(self, MAP__FUNCTION, addr, mapp, filter); 228 } 229 230 static inline 231 struct symbol *map_groups__find_function_by_name(struct map_groups *mg, 232 const char *name, struct map **mapp, 233 symbol_filter_t filter) 234 { 235 return map_groups__find_symbol_by_name(mg, MAP__FUNCTION, name, mapp, filter); 236 } 237 238 static inline 239 struct symbol *machine__find_kernel_function_by_name(struct machine *self, 240 const char *name, 241 struct map **mapp, 242 symbol_filter_t filter) 243 { 244 return map_groups__find_function_by_name(&self->kmaps, name, mapp, 245 filter); 246 } 247 248 int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map, 249 int verbose, FILE *fp); 250 251 struct map *map_groups__find_by_name(struct map_groups *mg, 252 enum map_type type, const char *name); 253 struct map *machine__new_module(struct machine *self, u64 start, const char *filename); 254 255 void map_groups__flush(struct map_groups *mg); 256 257 #endif /* __PERF_MAP_H */ 258