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v4.6
  1#ifndef __PERF_MAP_H
  2#define __PERF_MAP_H
  3
  4#include <linux/atomic.h>
  5#include <linux/compiler.h>
  6#include <linux/list.h>
  7#include <linux/rbtree.h>
  8#include <pthread.h>
  9#include <stdio.h>
 10#include <stdbool.h>
 11#include <linux/types.h>
 12
 13enum map_type {
 14	MAP__FUNCTION = 0,
 15	MAP__VARIABLE,
 16};
 17
 18#define MAP__NR_TYPES (MAP__VARIABLE + 1)
 19
 20extern const char *map_type__name[MAP__NR_TYPES];
 21
 22struct dso;
 23struct ip_callchain;
 24struct ref_reloc_sym;
 25struct map_groups;
 26struct machine;
 27struct perf_evsel;
 28
 29struct map {
 30	union {
 31		struct rb_node	rb_node;
 32		struct list_head node;
 33	};
 34	u64			start;
 35	u64			end;
 36	u8 /* enum map_type */	type;
 
 37	bool			erange_warned;
 38	u32			priv;
 39	u32			prot;
 40	u32			flags;
 41	u64			pgoff;
 42	u64			reloc;
 43	u32			maj, min; /* only valid for MMAP2 record */
 44	u64			ino;      /* only valid for MMAP2 record */
 45	u64			ino_generation;/* only valid for MMAP2 record */
 46
 47	/* ip -> dso rip */
 48	u64			(*map_ip)(struct map *, u64);
 49	/* dso rip -> ip */
 50	u64			(*unmap_ip)(struct map *, u64);
 51
 52	struct dso		*dso;
 53	struct map_groups	*groups;
 54	atomic_t		refcnt;
 55};
 56
 57struct kmap {
 58	struct ref_reloc_sym	*ref_reloc_sym;
 59	struct map_groups	*kmaps;
 60};
 61
 62struct maps {
 63	struct rb_root	 entries;
 64	pthread_rwlock_t lock;
 65};
 66
 67struct map_groups {
 68	struct maps	 maps[MAP__NR_TYPES];
 
 69	struct machine	 *machine;
 70	atomic_t	 refcnt;
 71};
 72
 73struct map_groups *map_groups__new(struct machine *machine);
 74void map_groups__delete(struct map_groups *mg);
 75bool map_groups__empty(struct map_groups *mg);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 76
 77static inline struct map_groups *map_groups__get(struct map_groups *mg)
 
 78{
 79	if (mg)
 80		atomic_inc(&mg->refcnt);
 81	return mg;
 82}
 83
 84void map_groups__put(struct map_groups *mg);
 85
 86struct kmap *map__kmap(struct map *map);
 87struct map_groups *map__kmaps(struct map *map);
 88
 89static inline u64 map__map_ip(struct map *map, u64 ip)
 90{
 91	return ip - map->start + map->pgoff;
 92}
 93
 94static inline u64 map__unmap_ip(struct map *map, u64 ip)
 95{
 96	return ip + map->start - map->pgoff;
 97}
 98
 99static 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=` */
106u64 map__rip_2objdump(struct map *map, u64 rip);
107
108/* objdump address -> memory address */
109u64 map__objdump_2mem(struct map *map, u64 ip);
110
111struct symbol;
112struct thread;
113
114/* map__for_each_symbol - iterate over the symbols in the given map
115 *
116 * @map: the 'struct map *' in which symbols itereated
117 * @pos: the 'struct symbol *' to use as a loop cursor
118 * @n: the 'struct rb_node *' to use as a temporary storage
119 * Note: caller must ensure map->dso is not NULL (map is loaded).
120 */
121#define map__for_each_symbol(map, pos, n)	\
122	dso__for_each_symbol(map->dso, pos, n, map->type)
123
124/* map__for_each_symbol_with_name - iterate over the symbols in the given map
125 *                                  that have the given name
126 *
127 * @map: the 'struct map *' in which symbols itereated
128 * @sym_name: the symbol name
129 * @pos: the 'struct symbol *' to use as a loop cursor
130 * @filter: to use when loading the DSO
131 */
132#define __map__for_each_symbol_by_name(map, sym_name, pos, filter)	\
133	for (pos = map__find_symbol_by_name(map, sym_name, filter);	\
134	     pos && arch__compare_symbol_names(pos->name, sym_name) == 0;	\
135	     pos = symbol__next_by_name(pos))
136
137#define map__for_each_symbol_by_name(map, sym_name, pos)		\
138	__map__for_each_symbol_by_name(map, sym_name, (pos), NULL)
139
140typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
141
142int arch__compare_symbol_names(const char *namea, const char *nameb);
143void map__init(struct map *map, enum map_type type,
144	       u64 start, u64 end, u64 pgoff, struct dso *dso);
145struct map *map__new(struct machine *machine, u64 start, u64 len,
146		     u64 pgoff, u32 pid, u32 d_maj, u32 d_min, u64 ino,
147		     u64 ino_gen, u32 prot, u32 flags,
148		     char *filename, enum map_type type, struct thread *thread);
149struct map *map__new2(u64 start, struct dso *dso, enum map_type type);
150void map__delete(struct map *map);
151struct map *map__clone(struct map *map);
152
153static inline struct map *map__get(struct map *map)
154{
155	if (map)
156		atomic_inc(&map->refcnt);
157	return map;
158}
159
160void map__put(struct map *map);
161
162static inline void __map__zput(struct map **map)
163{
164	map__put(*map);
165	*map = NULL;
166}
167
168#define map__zput(map) __map__zput(&map)
169
170int map__overlap(struct map *l, struct map *r);
171size_t map__fprintf(struct map *map, FILE *fp);
172size_t map__fprintf_dsoname(struct map *map, FILE *fp);
173int map__fprintf_srcline(struct map *map, u64 addr, const char *prefix,
174			 FILE *fp);
175
176int map__load(struct map *map, symbol_filter_t filter);
177struct symbol *map__find_symbol(struct map *map,
178				u64 addr, symbol_filter_t filter);
179struct symbol *map__find_symbol_by_name(struct map *map, const char *name,
180					symbol_filter_t filter);
181void map__fixup_start(struct map *map);
182void map__fixup_end(struct map *map);
183
184void map__reloc_vmlinux(struct map *map);
185
186size_t __map_groups__fprintf_maps(struct map_groups *mg, enum map_type type,
187				  FILE *fp);
188void maps__insert(struct maps *maps, struct map *map);
189void maps__remove(struct maps *maps, struct map *map);
190struct map *maps__find(struct maps *maps, u64 addr);
191struct map *maps__first(struct maps *maps);
192struct map *map__next(struct map *map);
193struct symbol *maps__find_symbol_by_name(struct maps *maps, const char *name,
194                                         struct map **mapp, symbol_filter_t filter);
195void map_groups__init(struct map_groups *mg, struct machine *machine);
196void map_groups__exit(struct map_groups *mg);
197int map_groups__clone(struct map_groups *mg,
198		      struct map_groups *parent, enum map_type type);
199size_t map_groups__fprintf(struct map_groups *mg, FILE *fp);
 
 
 
200
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
201int maps__set_kallsyms_ref_reloc_sym(struct map **maps, const char *symbol_name,
202				     u64 addr);
203
 
 
 
 
 
 
 
 
 
 
 
 
 
 
204static inline void map_groups__insert(struct map_groups *mg, struct map *map)
205{
206	maps__insert(&mg->maps[map->type], map);
207	map->groups = mg;
208}
209
210static inline void map_groups__remove(struct map_groups *mg, struct map *map)
211{
212	maps__remove(&mg->maps[map->type], map);
213}
214
215static inline struct map *map_groups__find(struct map_groups *mg,
216					   enum map_type type, u64 addr)
217{
218	return maps__find(&mg->maps[type], addr);
219}
220
221static inline struct map *map_groups__first(struct map_groups *mg,
222					    enum map_type type)
223{
224	return maps__first(&mg->maps[type]);
225}
226
227static inline struct map *map_groups__next(struct map *map)
228{
229	return map__next(map);
230}
231
232struct symbol *map_groups__find_symbol(struct map_groups *mg,
233				       enum map_type type, u64 addr,
234				       struct map **mapp,
235				       symbol_filter_t filter);
236
237struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg,
238					       enum map_type type,
239					       const char *name,
240					       struct map **mapp,
241					       symbol_filter_t filter);
242
243struct addr_map_symbol;
244
245int map_groups__find_ams(struct addr_map_symbol *ams, symbol_filter_t filter);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
246
247static inline
248struct symbol *map_groups__find_function_by_name(struct map_groups *mg,
249						 const char *name, struct map **mapp,
250						 symbol_filter_t filter)
251{
252	return map_groups__find_symbol_by_name(mg, MAP__FUNCTION, name, mapp, filter);
253}
254
 
 
 
 
 
 
 
 
 
 
255int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map,
256				   FILE *fp);
257
258struct map *map_groups__find_by_name(struct map_groups *mg,
259				     enum map_type type, const char *name);
 
260
261bool __map__is_kernel(const struct map *map);
262
263static inline bool __map__is_kmodule(const struct map *map)
264{
265	return !__map__is_kernel(map);
266}
267
268#endif /* __PERF_MAP_H */
v3.5.6
  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
 11enum map_type {
 12	MAP__FUNCTION = 0,
 13	MAP__VARIABLE,
 14};
 15
 16#define MAP__NR_TYPES (MAP__VARIABLE + 1)
 17
 18extern const char *map_type__name[MAP__NR_TYPES];
 19
 20struct dso;
 21struct ip_callchain;
 22struct ref_reloc_sym;
 23struct map_groups;
 24struct machine;
 25struct perf_evsel;
 26
 27struct 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
 49struct kmap {
 50	struct ref_reloc_sym	*ref_reloc_sym;
 51	struct map_groups	*kmaps;
 52};
 53
 
 
 
 
 
 54struct 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
 64struct 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
 78static inline
 79struct map *machine__kernel_map(struct machine *self, enum map_type type)
 80{
 81	return self->vmlinux_maps[type];
 
 
 82}
 83
 84static inline struct kmap *map__kmap(struct map *self)
 85{
 86	return (struct kmap *)(self + 1);
 87}
 88
 89static inline u64 map__map_ip(struct map *map, u64 ip)
 90{
 91	return ip - map->start + map->pgoff;
 92}
 93
 94static inline u64 map__unmap_ip(struct map *map, u64 ip)
 95{
 96	return ip + map->start - map->pgoff;
 97}
 98
 99static 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=` */
106u64 map__rip_2objdump(struct map *map, u64 rip);
107u64 map__objdump_2ip(struct map *map, u64 addr);
 
 
108
109struct symbol;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
110
111typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
112
113void map__init(struct map *self, enum map_type type,
 
114	       u64 start, u64 end, u64 pgoff, struct dso *dso);
115struct map *map__new(struct list_head *dsos__list, u64 start, u64 len,
116		     u64 pgoff, u32 pid, char *filename,
117		     enum map_type type);
118void map__delete(struct map *self);
119struct map *map__clone(struct map *self);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
120int map__overlap(struct map *l, struct map *r);
121size_t map__fprintf(struct map *self, FILE *fp);
122size_t map__fprintf_dsoname(struct map *map, FILE *fp);
 
 
123
124int map__load(struct map *self, symbol_filter_t filter);
125struct symbol *map__find_symbol(struct map *self,
126				u64 addr, symbol_filter_t filter);
127struct symbol *map__find_symbol_by_name(struct map *self, const char *name,
128					symbol_filter_t filter);
129void map__fixup_start(struct map *self);
130void map__fixup_end(struct map *self);
131
132void map__reloc_vmlinux(struct map *self);
133
134size_t __map_groups__fprintf_maps(struct map_groups *mg,
135				  enum map_type type, int verbose, FILE *fp);
136void maps__insert(struct rb_root *maps, struct map *map);
137void maps__remove(struct rb_root *maps, struct map *map);
138struct map *maps__find(struct rb_root *maps, u64 addr);
139void map_groups__init(struct map_groups *mg);
 
 
 
 
140void map_groups__exit(struct map_groups *mg);
141int map_groups__clone(struct map_groups *mg,
142		      struct map_groups *parent, enum map_type type);
143size_t map_groups__fprintf(struct map_groups *mg, int verbose, FILE *fp);
144size_t map_groups__fprintf_maps(struct map_groups *mg, int verbose, FILE *fp);
145
146typedef void (*machine__process_t)(struct machine *self, void *data);
147
148void machines__process(struct rb_root *self, machine__process_t process, void *data);
149struct machine *machines__add(struct rb_root *self, pid_t pid,
150			      const char *root_dir);
151struct machine *machines__find_host(struct rb_root *self);
152struct machine *machines__find(struct rb_root *self, pid_t pid);
153struct machine *machines__findnew(struct rb_root *self, pid_t pid);
154char *machine__mmap_name(struct machine *self, char *bf, size_t size);
155int machine__init(struct machine *self, const char *root_dir, pid_t pid);
156void machine__exit(struct machine *self);
157void machine__delete(struct machine *self);
158
159int machine__resolve_callchain(struct machine *machine,
160			       struct perf_evsel *evsel, struct thread *thread,
161			       struct ip_callchain *chain,
162			       struct symbol **parent);
163int 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 */
170static inline bool machine__is_default_guest(struct machine *self)
171{
172	return self ? self->pid == DEFAULT_GUEST_KERNEL_ID : false;
173}
174
175static inline bool machine__is_host(struct machine *self)
176{
177	return self ? self->pid == HOST_KERNEL_ID : false;
178}
179
180static 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
186static inline void map_groups__remove(struct map_groups *mg, struct map *map)
187{
188	maps__remove(&mg->maps[map->type], map);
189}
190
191static 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
 
 
 
 
 
 
 
 
 
 
 
197struct 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
202struct 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
209struct thread *machine__findnew_thread(struct machine *machine, pid_t pid);
210void machine__remove_thread(struct machine *machine, struct thread *th);
211
212size_t machine__fprintf(struct machine *machine, FILE *fp);
213
214static inline
215struct 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
223static inline
224struct 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
231static inline
232struct 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
239static inline
240struct 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
249int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map,
250				   int verbose, FILE *fp);
251
252struct map *map_groups__find_by_name(struct map_groups *mg,
253				     enum map_type type, const char *name);
254struct map *machine__new_module(struct machine *self, u64 start, const char *filename);
255
256void map_groups__flush(struct map_groups *mg);
 
 
 
 
 
257
258#endif /* __PERF_MAP_H */