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
machine__kernel_map(struct machine * self,enum map_type type)79 struct map *machine__kernel_map(struct machine *self, enum map_type type)
80 {
81 return self->vmlinux_maps[type];
82 }
83
map__kmap(struct map * self)84 static inline struct kmap *map__kmap(struct map *self)
85 {
86 return (struct kmap *)(self + 1);
87 }
88
map__map_ip(struct map * map,u64 ip)89 static inline u64 map__map_ip(struct map *map, u64 ip)
90 {
91 return ip - map->start + map->pgoff;
92 }
93
map__unmap_ip(struct map * map,u64 ip)94 static inline u64 map__unmap_ip(struct map *map, u64 ip)
95 {
96 return ip + map->start - map->pgoff;
97 }
98
identity__map_ip(struct map * map __used,u64 ip)99 static inline u64 identity__map_ip(struct map *map __used, 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 u64 map__objdump_2ip(struct map *map, u64 addr);
108
109 struct symbol;
110
111 typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
112
113 void map__init(struct map *self, enum map_type type,
114 u64 start, u64 end, u64 pgoff, struct dso *dso);
115 struct map *map__new(struct list_head *dsos__list, u64 start, u64 len,
116 u64 pgoff, u32 pid, char *filename,
117 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 char *machine__mmap_name(struct machine *self, char *bf, size_t size);
155 int machine__init(struct machine *self, const char *root_dir, pid_t pid);
156 void machine__exit(struct machine *self);
157 void machine__delete(struct machine *self);
158
159 int machine__resolve_callchain(struct machine *machine,
160 struct perf_evsel *evsel, struct thread *thread,
161 struct ip_callchain *chain,
162 struct symbol **parent);
163 int maps__set_kallsyms_ref_reloc_sym(struct map **maps, const char *symbol_name,
164 u64 addr);
165
166 /*
167 * Default guest kernel is defined by parameter --guestkallsyms
168 * and --guestmodules
169 */
machine__is_default_guest(struct machine * self)170 static inline bool machine__is_default_guest(struct machine *self)
171 {
172 return self ? self->pid == DEFAULT_GUEST_KERNEL_ID : false;
173 }
174
machine__is_host(struct machine * self)175 static inline bool machine__is_host(struct machine *self)
176 {
177 return self ? self->pid == HOST_KERNEL_ID : false;
178 }
179
map_groups__insert(struct map_groups * mg,struct map * map)180 static inline void map_groups__insert(struct map_groups *mg, struct map *map)
181 {
182 maps__insert(&mg->maps[map->type], map);
183 map->groups = mg;
184 }
185
map_groups__remove(struct map_groups * mg,struct map * map)186 static inline void map_groups__remove(struct map_groups *mg, struct map *map)
187 {
188 maps__remove(&mg->maps[map->type], map);
189 }
190
map_groups__find(struct map_groups * mg,enum map_type type,u64 addr)191 static inline struct map *map_groups__find(struct map_groups *mg,
192 enum map_type type, u64 addr)
193 {
194 return maps__find(&mg->maps[type], addr);
195 }
196
197 struct symbol *map_groups__find_symbol(struct map_groups *mg,
198 enum map_type type, u64 addr,
199 struct map **mapp,
200 symbol_filter_t filter);
201
202 struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg,
203 enum map_type type,
204 const char *name,
205 struct map **mapp,
206 symbol_filter_t filter);
207
208
209 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid);
210 void machine__remove_thread(struct machine *machine, struct thread *th);
211
212 size_t machine__fprintf(struct machine *machine, FILE *fp);
213
214 static inline
machine__find_kernel_symbol(struct machine * self,enum map_type type,u64 addr,struct map ** mapp,symbol_filter_t filter)215 struct symbol *machine__find_kernel_symbol(struct machine *self,
216 enum map_type type, u64 addr,
217 struct map **mapp,
218 symbol_filter_t filter)
219 {
220 return map_groups__find_symbol(&self->kmaps, type, addr, mapp, filter);
221 }
222
223 static inline
machine__find_kernel_function(struct machine * self,u64 addr,struct map ** mapp,symbol_filter_t filter)224 struct symbol *machine__find_kernel_function(struct machine *self, u64 addr,
225 struct map **mapp,
226 symbol_filter_t filter)
227 {
228 return machine__find_kernel_symbol(self, MAP__FUNCTION, addr, mapp, filter);
229 }
230
231 static inline
map_groups__find_function_by_name(struct map_groups * mg,const char * name,struct map ** mapp,symbol_filter_t filter)232 struct symbol *map_groups__find_function_by_name(struct map_groups *mg,
233 const char *name, struct map **mapp,
234 symbol_filter_t filter)
235 {
236 return map_groups__find_symbol_by_name(mg, MAP__FUNCTION, name, mapp, filter);
237 }
238
239 static inline
machine__find_kernel_function_by_name(struct machine * self,const char * name,struct map ** mapp,symbol_filter_t filter)240 struct symbol *machine__find_kernel_function_by_name(struct machine *self,
241 const char *name,
242 struct map **mapp,
243 symbol_filter_t filter)
244 {
245 return map_groups__find_function_by_name(&self->kmaps, name, mapp,
246 filter);
247 }
248
249 int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map,
250 int verbose, FILE *fp);
251
252 struct map *map_groups__find_by_name(struct map_groups *mg,
253 enum map_type type, const char *name);
254 struct map *machine__new_module(struct machine *self, u64 start, const char *filename);
255
256 void map_groups__flush(struct map_groups *mg);
257
258 #endif /* __PERF_MAP_H */
259