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 bool erange_warned; 37 u32 priv; 38 u64 pgoff; 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 }; 48 49 struct kmap { 50 struct ref_reloc_sym *ref_reloc_sym; 51 struct map_groups *kmaps; 52 }; 53 54 struct map_groups { 55 struct rb_root maps[MAP__NR_TYPES]; 56 struct list_head removed_maps[MAP__NR_TYPES]; 57 struct machine *machine; 58 }; 59 60 /* Native host kernel uses -1 as pid index in machine */ 61 #define HOST_KERNEL_ID (-1) 62 #define DEFAULT_GUEST_KERNEL_ID (0) 63 64 struct machine { 65 struct rb_node rb_node; 66 pid_t pid; 67 u16 id_hdr_size; 68 char *root_dir; 69 struct rb_root threads; 70 struct list_head dead_threads; 71 struct thread *last_match; 72 struct list_head user_dsos; 73 struct list_head kernel_dsos; 74 struct map_groups kmaps; 75 struct map *vmlinux_maps[MAP__NR_TYPES]; 76 }; 77 78 static inline 79 struct map *machine__kernel_map(struct machine *self, enum map_type type) 80 { 81 return self->vmlinux_maps[type]; 82 } 83 84 static inline struct kmap *map__kmap(struct map *self) 85 { 86 return (struct kmap *)(self + 1); 87 } 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 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 struct map *map__new2(u64 start, struct dso *dso, enum map_type type); 118 void map__delete(struct map *self); 119 struct map *map__clone(struct map *self); 120 int map__overlap(struct map *l, struct map *r); 121 size_t map__fprintf(struct map *self, FILE *fp); 122 size_t map__fprintf_dsoname(struct map *map, FILE *fp); 123 124 int map__load(struct map *self, symbol_filter_t filter); 125 struct symbol *map__find_symbol(struct map *self, 126 u64 addr, symbol_filter_t filter); 127 struct symbol *map__find_symbol_by_name(struct map *self, const char *name, 128 symbol_filter_t filter); 129 void map__fixup_start(struct map *self); 130 void map__fixup_end(struct map *self); 131 132 void map__reloc_vmlinux(struct map *self); 133 134 size_t __map_groups__fprintf_maps(struct map_groups *mg, 135 enum map_type type, int verbose, FILE *fp); 136 void maps__insert(struct rb_root *maps, struct map *map); 137 void maps__remove(struct rb_root *maps, struct map *map); 138 struct map *maps__find(struct rb_root *maps, u64 addr); 139 void map_groups__init(struct map_groups *mg); 140 void map_groups__exit(struct map_groups *mg); 141 int map_groups__clone(struct map_groups *mg, 142 struct map_groups *parent, enum map_type type); 143 size_t map_groups__fprintf(struct map_groups *mg, int verbose, FILE *fp); 144 size_t map_groups__fprintf_maps(struct map_groups *mg, int verbose, FILE *fp); 145 146 typedef void (*machine__process_t)(struct machine *self, void *data); 147 148 void machines__process(struct rb_root *self, machine__process_t process, void *data); 149 struct machine *machines__add(struct rb_root *self, pid_t pid, 150 const char *root_dir); 151 struct machine *machines__find_host(struct rb_root *self); 152 struct machine *machines__find(struct rb_root *self, pid_t pid); 153 struct machine *machines__findnew(struct rb_root *self, pid_t pid); 154 void machines__set_id_hdr_size(struct rb_root *self, u16 id_hdr_size); 155 char *machine__mmap_name(struct machine *self, char *bf, size_t size); 156 int machine__init(struct machine *self, const char *root_dir, pid_t pid); 157 void machine__exit(struct machine *self); 158 void machine__delete(struct machine *self); 159 160 struct perf_evsel; 161 struct perf_sample; 162 int machine__resolve_callchain(struct machine *machine, 163 struct perf_evsel *evsel, 164 struct thread *thread, 165 struct perf_sample *sample, 166 struct symbol **parent); 167 int maps__set_kallsyms_ref_reloc_sym(struct map **maps, const char *symbol_name, 168 u64 addr); 169 170 /* 171 * Default guest kernel is defined by parameter --guestkallsyms 172 * and --guestmodules 173 */ 174 static inline bool machine__is_default_guest(struct machine *self) 175 { 176 return self ? self->pid == DEFAULT_GUEST_KERNEL_ID : false; 177 } 178 179 static inline bool machine__is_host(struct machine *self) 180 { 181 return self ? self->pid == HOST_KERNEL_ID : false; 182 } 183 184 static inline void map_groups__insert(struct map_groups *mg, struct map *map) 185 { 186 maps__insert(&mg->maps[map->type], map); 187 map->groups = mg; 188 } 189 190 static inline void map_groups__remove(struct map_groups *mg, struct map *map) 191 { 192 maps__remove(&mg->maps[map->type], map); 193 } 194 195 static inline struct map *map_groups__find(struct map_groups *mg, 196 enum map_type type, u64 addr) 197 { 198 return maps__find(&mg->maps[type], addr); 199 } 200 201 struct symbol *map_groups__find_symbol(struct map_groups *mg, 202 enum map_type type, u64 addr, 203 struct map **mapp, 204 symbol_filter_t filter); 205 206 struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg, 207 enum map_type type, 208 const char *name, 209 struct map **mapp, 210 symbol_filter_t filter); 211 212 213 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid); 214 void machine__remove_thread(struct machine *machine, struct thread *th); 215 216 size_t machine__fprintf(struct machine *machine, FILE *fp); 217 218 static inline 219 struct symbol *machine__find_kernel_symbol(struct machine *self, 220 enum map_type type, u64 addr, 221 struct map **mapp, 222 symbol_filter_t filter) 223 { 224 return map_groups__find_symbol(&self->kmaps, type, addr, mapp, filter); 225 } 226 227 static inline 228 struct symbol *machine__find_kernel_function(struct machine *self, u64 addr, 229 struct map **mapp, 230 symbol_filter_t filter) 231 { 232 return machine__find_kernel_symbol(self, MAP__FUNCTION, addr, mapp, filter); 233 } 234 235 static inline 236 struct symbol *map_groups__find_function_by_name(struct map_groups *mg, 237 const char *name, struct map **mapp, 238 symbol_filter_t filter) 239 { 240 return map_groups__find_symbol_by_name(mg, MAP__FUNCTION, name, mapp, filter); 241 } 242 243 static inline 244 struct symbol *machine__find_kernel_function_by_name(struct machine *self, 245 const char *name, 246 struct map **mapp, 247 symbol_filter_t filter) 248 { 249 return map_groups__find_function_by_name(&self->kmaps, name, mapp, 250 filter); 251 } 252 253 int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map, 254 int verbose, FILE *fp); 255 256 struct map *map_groups__find_by_name(struct map_groups *mg, 257 enum map_type type, const char *name); 258 struct map *machine__new_module(struct machine *self, u64 start, const char *filename); 259 260 void map_groups__flush(struct map_groups *mg); 261 262 #endif /* __PERF_MAP_H */ 263