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 ref_reloc_sym; 22 struct map_groups; 23 struct machine; 24 25 struct 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 46 struct kmap { 47 struct ref_reloc_sym *ref_reloc_sym; 48 struct map_groups *kmaps; 49 }; 50 51 struct 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 61 struct 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 71 static inline 72 struct map *machine__kernel_map(struct machine *self, enum map_type type) 73 { 74 return self->vmlinux_maps[type]; 75 } 76 77 static inline struct kmap *map__kmap(struct map *self) 78 { 79 return (struct kmap *)(self + 1); 80 } 81 82 static inline u64 map__map_ip(struct map *map, u64 ip) 83 { 84 return ip - map->start + map->pgoff; 85 } 86 87 static inline u64 map__unmap_ip(struct map *map, u64 ip) 88 { 89 return ip + map->start - map->pgoff; 90 } 91 92 static 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=` */ 99 u64 map__rip_2objdump(struct map *map, u64 rip); 100 u64 map__objdump_2ip(struct map *map, u64 addr); 101 102 struct symbol; 103 104 typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym); 105 106 void map__init(struct map *self, enum map_type type, 107 u64 start, u64 end, u64 pgoff, struct dso *dso); 108 struct map *map__new(struct list_head *dsos__list, u64 start, u64 len, 109 u64 pgoff, u32 pid, char *filename, 110 enum map_type type); 111 void map__delete(struct map *self); 112 struct map *map__clone(struct map *self); 113 int map__overlap(struct map *l, struct map *r); 114 size_t map__fprintf(struct map *self, FILE *fp); 115 116 int map__load(struct map *self, symbol_filter_t filter); 117 struct symbol *map__find_symbol(struct map *self, 118 u64 addr, symbol_filter_t filter); 119 struct symbol *map__find_symbol_by_name(struct map *self, const char *name, 120 symbol_filter_t filter); 121 void map__fixup_start(struct map *self); 122 void map__fixup_end(struct map *self); 123 124 void map__reloc_vmlinux(struct map *self); 125 126 size_t __map_groups__fprintf_maps(struct map_groups *self, 127 enum map_type type, int verbose, FILE *fp); 128 void maps__insert(struct rb_root *maps, struct map *map); 129 void maps__remove(struct rb_root *self, struct map *map); 130 struct map *maps__find(struct rb_root *maps, u64 addr); 131 void map_groups__init(struct map_groups *self); 132 void map_groups__exit(struct map_groups *self); 133 int map_groups__clone(struct map_groups *self, 134 struct map_groups *parent, enum map_type type); 135 size_t map_groups__fprintf(struct map_groups *self, int verbose, FILE *fp); 136 size_t map_groups__fprintf_maps(struct map_groups *self, int verbose, FILE *fp); 137 138 typedef void (*machine__process_t)(struct machine *self, void *data); 139 140 void machines__process(struct rb_root *self, machine__process_t process, void *data); 141 struct machine *machines__add(struct rb_root *self, pid_t pid, 142 const char *root_dir); 143 struct machine *machines__find_host(struct rb_root *self); 144 struct machine *machines__find(struct rb_root *self, pid_t pid); 145 struct machine *machines__findnew(struct rb_root *self, pid_t pid); 146 char *machine__mmap_name(struct machine *self, char *bf, size_t size); 147 int machine__init(struct machine *self, const char *root_dir, pid_t pid); 148 void machine__exit(struct machine *self); 149 void machine__delete(struct machine *self); 150 151 /* 152 * Default guest kernel is defined by parameter --guestkallsyms 153 * and --guestmodules 154 */ 155 static inline bool machine__is_default_guest(struct machine *self) 156 { 157 return self ? self->pid == DEFAULT_GUEST_KERNEL_ID : false; 158 } 159 160 static inline bool machine__is_host(struct machine *self) 161 { 162 return self ? self->pid == HOST_KERNEL_ID : false; 163 } 164 165 static 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 } 170 171 static inline void map_groups__remove(struct map_groups *self, struct map *map) 172 { 173 maps__remove(&self->maps[map->type], map); 174 } 175 176 static 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 } 181 182 struct 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); 186 187 struct 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); 192 193 static inline 194 struct 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 } 201 202 static inline 203 struct 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 } 209 210 static inline 211 struct 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 } 217 218 static inline 219 struct symbol *machine__find_kernel_function_by_name(struct machine *self, 220 const char *name, 221 struct map **mapp, 222 symbol_filter_t filter) 223 { 224 return map_groups__find_function_by_name(&self->kmaps, name, mapp, 225 filter); 226 } 227 228 int map_groups__fixup_overlappings(struct map_groups *self, struct map *map, 229 int verbose, FILE *fp); 230 231 struct map *map_groups__find_by_name(struct map_groups *self, 232 enum map_type type, const char *name); 233 struct map *machine__new_module(struct machine *self, u64 start, const char *filename); 234 235 void map_groups__flush(struct map_groups *self); 236 237 #endif /* __PERF_MAP_H */ 238