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 enum map_type type; 33 u32 priv; 34 u64 pgoff; 35 36 /* ip -> dso rip */ 37 u64 (*map_ip)(struct map *, u64); 38 /* dso rip -> ip */ 39 u64 (*unmap_ip)(struct map *, u64); 40 41 struct dso *dso; 42 struct map_groups *groups; 43 }; 44 45 struct kmap { 46 struct ref_reloc_sym *ref_reloc_sym; 47 struct map_groups *kmaps; 48 }; 49 50 struct map_groups { 51 struct rb_root maps[MAP__NR_TYPES]; 52 struct list_head removed_maps[MAP__NR_TYPES]; 53 struct machine *machine; 54 }; 55 56 /* Native host kernel uses -1 as pid index in machine */ 57 #define HOST_KERNEL_ID (-1) 58 #define DEFAULT_GUEST_KERNEL_ID (0) 59 60 struct machine { 61 struct rb_node rb_node; 62 pid_t pid; 63 char *root_dir; 64 struct list_head user_dsos; 65 struct list_head kernel_dsos; 66 struct map_groups kmaps; 67 struct map *vmlinux_maps[MAP__NR_TYPES]; 68 }; 69 70 static inline 71 struct map *machine__kernel_map(struct machine *self, enum map_type type) 72 { 73 return self->vmlinux_maps[type]; 74 } 75 76 static inline struct kmap *map__kmap(struct map *self) 77 { 78 return (struct kmap *)(self + 1); 79 } 80 81 static inline u64 map__map_ip(struct map *map, u64 ip) 82 { 83 return ip - map->start + map->pgoff; 84 } 85 86 static inline u64 map__unmap_ip(struct map *map, u64 ip) 87 { 88 return ip + map->start - map->pgoff; 89 } 90 91 static inline u64 identity__map_ip(struct map *map __used, u64 ip) 92 { 93 return ip; 94 } 95 96 97 /* rip/ip <-> addr suitable for passing to `objdump --start-address=` */ 98 u64 map__rip_2objdump(struct map *map, u64 rip); 99 u64 map__objdump_2ip(struct map *map, u64 addr); 100 101 struct symbol; 102 103 typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym); 104 105 void map__init(struct map *self, enum map_type type, 106 u64 start, u64 end, u64 pgoff, struct dso *dso); 107 struct map *map__new(struct list_head *dsos__list, u64 start, u64 len, 108 u64 pgoff, u32 pid, char *filename, 109 enum map_type type); 110 void map__delete(struct map *self); 111 struct map *map__clone(struct map *self); 112 int map__overlap(struct map *l, struct map *r); 113 size_t map__fprintf(struct map *self, FILE *fp); 114 115 int map__load(struct map *self, symbol_filter_t filter); 116 struct symbol *map__find_symbol(struct map *self, 117 u64 addr, symbol_filter_t filter); 118 struct symbol *map__find_symbol_by_name(struct map *self, const char *name, 119 symbol_filter_t filter); 120 void map__fixup_start(struct map *self); 121 void map__fixup_end(struct map *self); 122 123 void map__reloc_vmlinux(struct map *self); 124 125 size_t __map_groups__fprintf_maps(struct map_groups *self, 126 enum map_type type, int verbose, FILE *fp); 127 void maps__insert(struct rb_root *maps, struct map *map); 128 struct map *maps__find(struct rb_root *maps, u64 addr); 129 void map_groups__init(struct map_groups *self); 130 int map_groups__clone(struct map_groups *self, 131 struct map_groups *parent, enum map_type type); 132 size_t map_groups__fprintf(struct map_groups *self, int verbose, FILE *fp); 133 size_t map_groups__fprintf_maps(struct map_groups *self, int verbose, FILE *fp); 134 135 typedef void (*machine__process_t)(struct machine *self, void *data); 136 137 void machines__process(struct rb_root *self, machine__process_t process, void *data); 138 struct machine *machines__add(struct rb_root *self, pid_t pid, 139 const char *root_dir); 140 struct machine *machines__find_host(struct rb_root *self); 141 struct machine *machines__find(struct rb_root *self, pid_t pid); 142 struct machine *machines__findnew(struct rb_root *self, pid_t pid); 143 char *machine__mmap_name(struct machine *self, char *bf, size_t size); 144 int machine__init(struct machine *self, const char *root_dir, pid_t pid); 145 146 /* 147 * Default guest kernel is defined by parameter --guestkallsyms 148 * and --guestmodules 149 */ 150 static inline bool machine__is_default_guest(struct machine *self) 151 { 152 return self ? self->pid == DEFAULT_GUEST_KERNEL_ID : false; 153 } 154 155 static inline bool machine__is_host(struct machine *self) 156 { 157 return self ? self->pid == HOST_KERNEL_ID : false; 158 } 159 160 static inline void map_groups__insert(struct map_groups *self, struct map *map) 161 { 162 maps__insert(&self->maps[map->type], map); 163 map->groups = self; 164 } 165 166 static inline struct map *map_groups__find(struct map_groups *self, 167 enum map_type type, u64 addr) 168 { 169 return maps__find(&self->maps[type], addr); 170 } 171 172 struct symbol *map_groups__find_symbol(struct map_groups *self, 173 enum map_type type, u64 addr, 174 struct map **mapp, 175 symbol_filter_t filter); 176 177 struct symbol *map_groups__find_symbol_by_name(struct map_groups *self, 178 enum map_type type, 179 const char *name, 180 struct map **mapp, 181 symbol_filter_t filter); 182 183 static inline 184 struct symbol *machine__find_kernel_symbol(struct machine *self, 185 enum map_type type, u64 addr, 186 struct map **mapp, 187 symbol_filter_t filter) 188 { 189 return map_groups__find_symbol(&self->kmaps, type, addr, mapp, filter); 190 } 191 192 static inline 193 struct symbol *machine__find_kernel_function(struct machine *self, u64 addr, 194 struct map **mapp, 195 symbol_filter_t filter) 196 { 197 return machine__find_kernel_symbol(self, MAP__FUNCTION, addr, mapp, filter); 198 } 199 200 static inline 201 struct symbol *map_groups__find_function_by_name(struct map_groups *self, 202 const char *name, struct map **mapp, 203 symbol_filter_t filter) 204 { 205 return map_groups__find_symbol_by_name(self, MAP__FUNCTION, name, mapp, filter); 206 } 207 208 int map_groups__fixup_overlappings(struct map_groups *self, struct map *map, 209 int verbose, FILE *fp); 210 211 struct map *map_groups__find_by_name(struct map_groups *self, 212 enum map_type type, const char *name); 213 struct map *machine__new_module(struct machine *self, u64 start, const char *filename); 214 215 void map_groups__flush(struct map_groups *self); 216 217 #endif /* __PERF_MAP_H */ 218