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
machine__kernel_map(struct machine * self,enum map_type type)72 struct map *machine__kernel_map(struct machine *self, enum map_type type)
73 {
74 return self->vmlinux_maps[type];
75 }
76
map__kmap(struct map * self)77 static inline struct kmap *map__kmap(struct map *self)
78 {
79 return (struct kmap *)(self + 1);
80 }
81
map__map_ip(struct map * map,u64 ip)82 static inline u64 map__map_ip(struct map *map, u64 ip)
83 {
84 return ip - map->start + map->pgoff;
85 }
86
map__unmap_ip(struct map * map,u64 ip)87 static inline u64 map__unmap_ip(struct map *map, u64 ip)
88 {
89 return ip + map->start - map->pgoff;
90 }
91
identity__map_ip(struct map * map __used,u64 ip)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 */
machine__is_default_guest(struct machine * self)155 static inline bool machine__is_default_guest(struct machine *self)
156 {
157 return self ? self->pid == DEFAULT_GUEST_KERNEL_ID : false;
158 }
159
machine__is_host(struct machine * self)160 static inline bool machine__is_host(struct machine *self)
161 {
162 return self ? self->pid == HOST_KERNEL_ID : false;
163 }
164
map_groups__insert(struct map_groups * self,struct map * map)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
map_groups__remove(struct map_groups * self,struct map * map)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
map_groups__find(struct map_groups * self,enum map_type type,u64 addr)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
machine__find_kernel_symbol(struct machine * self,enum map_type type,u64 addr,struct map ** mapp,symbol_filter_t filter)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
machine__find_kernel_function(struct machine * self,u64 addr,struct map ** mapp,symbol_filter_t filter)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
map_groups__find_function_by_name(struct map_groups * self,const char * name,struct map ** mapp,symbol_filter_t filter)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
machine__find_kernel_function_by_name(struct machine * self,const char * name,struct map ** mapp,symbol_filter_t filter)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