]>
git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - tools/perf/util/map.c
17 #include <linux/string.h>
19 const char *map_type__name
[MAP__NR_TYPES
] = {
20 [MAP__FUNCTION
] = "Functions",
21 [MAP__VARIABLE
] = "Variables",
24 static inline int is_anon_memory(const char *filename
)
26 return !strcmp(filename
, "//anon") ||
27 !strcmp(filename
, "/dev/zero (deleted)") ||
28 !strcmp(filename
, "/anon_hugepage (deleted)");
31 static inline int is_no_dso_memory(const char *filename
)
33 return !strncmp(filename
, "[stack", 6) ||
34 !strncmp(filename
, "/SYSV",5) ||
35 !strcmp(filename
, "[heap]");
38 static inline int is_android_lib(const char *filename
)
40 return !strncmp(filename
, "/data/app-lib", 13) ||
41 !strncmp(filename
, "/system/lib", 11);
44 static inline bool replace_android_lib(const char *filename
, char *newfilename
)
48 size_t app_abi_length
, new_length
;
49 size_t lib_length
= 0;
51 libname
= strrchr(filename
, '/');
53 lib_length
= strlen(libname
);
55 app_abi
= getenv("APP_ABI");
59 app_abi_length
= strlen(app_abi
);
61 if (!strncmp(filename
, "/data/app-lib", 13)) {
67 new_length
= 7 + app_abi_length
+ lib_length
;
69 apk_path
= getenv("APK_PATH");
71 new_length
+= strlen(apk_path
) + 1;
72 if (new_length
> PATH_MAX
)
74 snprintf(newfilename
, new_length
,
75 "%s/libs/%s/%s", apk_path
, app_abi
, libname
);
77 if (new_length
> PATH_MAX
)
79 snprintf(newfilename
, new_length
,
80 "libs/%s/%s", app_abi
, libname
);
85 if (!strncmp(filename
, "/system/lib/", 11)) {
91 ndk
= getenv("NDK_ROOT");
92 app
= getenv("APP_PLATFORM");
97 ndk_length
= strlen(ndk
);
98 app_length
= strlen(app
);
100 if (!(ndk_length
&& app_length
&& app_abi_length
))
103 arch
= !strncmp(app_abi
, "arm", 3) ? "arm" :
104 !strncmp(app_abi
, "mips", 4) ? "mips" :
105 !strncmp(app_abi
, "x86", 3) ? "x86" : NULL
;
110 new_length
= 27 + ndk_length
+
111 app_length
+ lib_length
114 if (new_length
> PATH_MAX
)
116 snprintf(newfilename
, new_length
,
117 "%s/platforms/%s/arch-%s/usr/lib/%s",
118 ndk
, app
, arch
, libname
);
125 void map__init(struct map
*map
, enum map_type type
,
126 u64 start
, u64 end
, u64 pgoff
, struct dso
*dso
)
134 map
->map_ip
= map__map_ip
;
135 map
->unmap_ip
= map__unmap_ip
;
136 RB_CLEAR_NODE(&map
->rb_node
);
138 map
->referenced
= false;
139 map
->erange_warned
= false;
142 struct map
*map__new(struct machine
*machine
, u64 start
, u64 len
,
143 u64 pgoff
, u32 pid
, u32 d_maj
, u32 d_min
, u64 ino
,
144 u64 ino_gen
, u32 prot
, u32 flags
, char *filename
,
145 enum map_type type
, struct thread
*thread
)
147 struct map
*map
= malloc(sizeof(*map
));
150 char newfilename
[PATH_MAX
];
152 int anon
, no_dso
, vdso
, android
;
154 android
= is_android_lib(filename
);
155 anon
= is_anon_memory(filename
);
156 vdso
= is_vdso_map(filename
);
157 no_dso
= is_no_dso_memory(filename
);
162 map
->ino_generation
= ino_gen
;
166 if ((anon
|| no_dso
) && type
== MAP__FUNCTION
) {
167 snprintf(newfilename
, sizeof(newfilename
), "/tmp/perf-%d.map", pid
);
168 filename
= newfilename
;
172 if (replace_android_lib(filename
, newfilename
))
173 filename
= newfilename
;
178 dso
= vdso__dso_findnew(machine
, thread
);
180 dso
= __dsos__findnew(&machine
->user_dsos
, filename
);
185 map__init(map
, type
, start
, start
+ len
, pgoff
, dso
);
187 if (anon
|| no_dso
) {
188 map
->map_ip
= map
->unmap_ip
= identity__map_ip
;
191 * Set memory without DSO as loaded. All map__find_*
192 * functions still return NULL, and we avoid the
193 * unnecessary map__load warning.
195 if (type
!= MAP__FUNCTION
)
196 dso__set_loaded(dso
, map
->type
);
206 * Constructor variant for modules (where we know from /proc/modules where
207 * they are loaded) and for vmlinux, where only after we load all the
208 * symbols we'll know where it starts and ends.
210 struct map
*map__new2(u64 start
, struct dso
*dso
, enum map_type type
)
212 struct map
*map
= calloc(1, (sizeof(*map
) +
213 (dso
->kernel
? sizeof(struct kmap
) : 0)));
216 * ->end will be filled after we load all the symbols
218 map__init(map
, type
, start
, 0, 0, dso
);
224 void map__delete(struct map
*map
)
229 void map__fixup_start(struct map
*map
)
231 struct rb_root
*symbols
= &map
->dso
->symbols
[map
->type
];
232 struct rb_node
*nd
= rb_first(symbols
);
234 struct symbol
*sym
= rb_entry(nd
, struct symbol
, rb_node
);
235 map
->start
= sym
->start
;
239 void map__fixup_end(struct map
*map
)
241 struct rb_root
*symbols
= &map
->dso
->symbols
[map
->type
];
242 struct rb_node
*nd
= rb_last(symbols
);
244 struct symbol
*sym
= rb_entry(nd
, struct symbol
, rb_node
);
249 #define DSO__DELETED "(deleted)"
251 int map__load(struct map
*map
, symbol_filter_t filter
)
253 const char *name
= map
->dso
->long_name
;
256 if (dso__loaded(map
->dso
, map
->type
))
259 nr
= dso__load(map
->dso
, map
, filter
);
261 if (map
->dso
->has_build_id
) {
262 char sbuild_id
[BUILD_ID_SIZE
* 2 + 1];
264 build_id__sprintf(map
->dso
->build_id
,
265 sizeof(map
->dso
->build_id
),
267 pr_warning("%s with build id %s not found",
270 pr_warning("Failed to open %s", name
);
272 pr_warning(", continuing without symbols\n");
274 } else if (nr
== 0) {
275 #ifdef HAVE_LIBELF_SUPPORT
276 const size_t len
= strlen(name
);
277 const size_t real_len
= len
- sizeof(DSO__DELETED
);
279 if (len
> sizeof(DSO__DELETED
) &&
280 strcmp(name
+ real_len
+ 1, DSO__DELETED
) == 0) {
281 pr_warning("%.*s was updated (is prelink enabled?). "
282 "Restart the long running apps that use it!\n",
283 (int)real_len
, name
);
285 pr_warning("no symbols found in %s, maybe install "
286 "a debug package?\n", name
);
295 int __weak
arch__compare_symbol_names(const char *namea
, const char *nameb
)
297 return strcmp(namea
, nameb
);
300 struct symbol
*map__find_symbol(struct map
*map
, u64 addr
,
301 symbol_filter_t filter
)
303 if (map__load(map
, filter
) < 0)
306 return dso__find_symbol(map
->dso
, map
->type
, addr
);
309 struct symbol
*map__find_symbol_by_name(struct map
*map
, const char *name
,
310 symbol_filter_t filter
)
312 if (map__load(map
, filter
) < 0)
315 if (!dso__sorted_by_name(map
->dso
, map
->type
))
316 dso__sort_by_name(map
->dso
, map
->type
);
318 return dso__find_symbol_by_name(map
->dso
, map
->type
, name
);
321 struct map
*map__clone(struct map
*map
)
323 return memdup(map
, sizeof(*map
));
326 int map__overlap(struct map
*l
, struct map
*r
)
328 if (l
->start
> r
->start
) {
334 if (l
->end
> r
->start
)
340 size_t map__fprintf(struct map
*map
, FILE *fp
)
342 return fprintf(fp
, " %" PRIx64
"-%" PRIx64
" %" PRIx64
" %s\n",
343 map
->start
, map
->end
, map
->pgoff
, map
->dso
->name
);
346 size_t map__fprintf_dsoname(struct map
*map
, FILE *fp
)
348 const char *dsoname
= "[unknown]";
350 if (map
&& map
->dso
&& (map
->dso
->name
|| map
->dso
->long_name
)) {
351 if (symbol_conf
.show_kernel_path
&& map
->dso
->long_name
)
352 dsoname
= map
->dso
->long_name
;
353 else if (map
->dso
->name
)
354 dsoname
= map
->dso
->name
;
357 return fprintf(fp
, "%s", dsoname
);
360 int map__fprintf_srcline(struct map
*map
, u64 addr
, const char *prefix
,
366 if (map
&& map
->dso
) {
367 srcline
= get_srcline(map
->dso
,
368 map__rip_2objdump(map
, addr
), NULL
, true);
369 if (srcline
!= SRCLINE_UNKNOWN
)
370 ret
= fprintf(fp
, "%s%s", prefix
, srcline
);
371 free_srcline(srcline
);
377 * map__rip_2objdump - convert symbol start address to objdump address.
379 * @rip: symbol start address
381 * objdump wants/reports absolute IPs for ET_EXEC, and RIPs for ET_DYN.
382 * map->dso->adjust_symbols==1 for ET_EXEC-like cases except ET_REL which is
383 * relative to section start.
385 * Return: Address suitable for passing to "objdump --start-address="
387 u64
map__rip_2objdump(struct map
*map
, u64 rip
)
389 if (!map
->dso
->adjust_symbols
)
393 return rip
- map
->pgoff
;
395 return map
->unmap_ip(map
, rip
) - map
->reloc
;
399 * map__objdump_2mem - convert objdump address to a memory address.
401 * @ip: objdump address
403 * Closely related to map__rip_2objdump(), this function takes an address from
404 * objdump and converts it to a memory address. Note this assumes that @map
405 * contains the address. To be sure the result is valid, check it forwards
406 * e.g. map__rip_2objdump(map->map_ip(map, map__objdump_2mem(map, ip))) == ip
408 * Return: Memory address.
410 u64
map__objdump_2mem(struct map
*map
, u64 ip
)
412 if (!map
->dso
->adjust_symbols
)
413 return map
->unmap_ip(map
, ip
);
416 return map
->unmap_ip(map
, ip
+ map
->pgoff
);
418 return ip
+ map
->reloc
;
421 void map_groups__init(struct map_groups
*mg
, struct machine
*machine
)
424 for (i
= 0; i
< MAP__NR_TYPES
; ++i
) {
425 mg
->maps
[i
] = RB_ROOT
;
426 INIT_LIST_HEAD(&mg
->removed_maps
[i
]);
428 mg
->machine
= machine
;
429 atomic_set(&mg
->refcnt
, 1);
432 static void maps__delete(struct rb_root
*maps
)
434 struct rb_node
*next
= rb_first(maps
);
437 struct map
*pos
= rb_entry(next
, struct map
, rb_node
);
439 next
= rb_next(&pos
->rb_node
);
440 rb_erase(&pos
->rb_node
, maps
);
445 static void maps__delete_removed(struct list_head
*maps
)
449 list_for_each_entry_safe(pos
, n
, maps
, node
) {
450 list_del(&pos
->node
);
455 void map_groups__exit(struct map_groups
*mg
)
459 for (i
= 0; i
< MAP__NR_TYPES
; ++i
) {
460 maps__delete(&mg
->maps
[i
]);
461 maps__delete_removed(&mg
->removed_maps
[i
]);
465 bool map_groups__empty(struct map_groups
*mg
)
469 for (i
= 0; i
< MAP__NR_TYPES
; ++i
) {
470 if (maps__first(&mg
->maps
[i
]))
472 if (!list_empty(&mg
->removed_maps
[i
]))
479 struct map_groups
*map_groups__new(struct machine
*machine
)
481 struct map_groups
*mg
= malloc(sizeof(*mg
));
484 map_groups__init(mg
, machine
);
489 void map_groups__delete(struct map_groups
*mg
)
491 map_groups__exit(mg
);
495 void map_groups__put(struct map_groups
*mg
)
497 if (mg
&& atomic_dec_and_test(&mg
->refcnt
))
498 map_groups__delete(mg
);
501 void map_groups__flush(struct map_groups
*mg
)
505 for (type
= 0; type
< MAP__NR_TYPES
; type
++) {
506 struct rb_root
*root
= &mg
->maps
[type
];
507 struct rb_node
*next
= rb_first(root
);
510 struct map
*pos
= rb_entry(next
, struct map
, rb_node
);
511 next
= rb_next(&pos
->rb_node
);
512 rb_erase(&pos
->rb_node
, root
);
514 * We may have references to this map, for
515 * instance in some hist_entry instances, so
516 * just move them to a separate list.
518 list_add_tail(&pos
->node
, &mg
->removed_maps
[pos
->type
]);
523 struct symbol
*map_groups__find_symbol(struct map_groups
*mg
,
524 enum map_type type
, u64 addr
,
526 symbol_filter_t filter
)
528 struct map
*map
= map_groups__find(mg
, type
, addr
);
530 /* Ensure map is loaded before using map->map_ip */
531 if (map
!= NULL
&& map__load(map
, filter
) >= 0) {
534 return map__find_symbol(map
, map
->map_ip(map
, addr
), filter
);
540 struct symbol
*map_groups__find_symbol_by_name(struct map_groups
*mg
,
544 symbol_filter_t filter
)
548 for (nd
= rb_first(&mg
->maps
[type
]); nd
; nd
= rb_next(nd
)) {
549 struct map
*pos
= rb_entry(nd
, struct map
, rb_node
);
550 struct symbol
*sym
= map__find_symbol_by_name(pos
, name
, filter
);
562 int map_groups__find_ams(struct addr_map_symbol
*ams
, symbol_filter_t filter
)
564 if (ams
->addr
< ams
->map
->start
|| ams
->addr
>= ams
->map
->end
) {
565 if (ams
->map
->groups
== NULL
)
567 ams
->map
= map_groups__find(ams
->map
->groups
, ams
->map
->type
,
569 if (ams
->map
== NULL
)
573 ams
->al_addr
= ams
->map
->map_ip(ams
->map
, ams
->addr
);
574 ams
->sym
= map__find_symbol(ams
->map
, ams
->al_addr
, filter
);
576 return ams
->sym
? 0 : -1;
579 size_t __map_groups__fprintf_maps(struct map_groups
*mg
, enum map_type type
,
582 size_t printed
= fprintf(fp
, "%s:\n", map_type__name
[type
]);
585 for (nd
= rb_first(&mg
->maps
[type
]); nd
; nd
= rb_next(nd
)) {
586 struct map
*pos
= rb_entry(nd
, struct map
, rb_node
);
587 printed
+= fprintf(fp
, "Map:");
588 printed
+= map__fprintf(pos
, fp
);
590 printed
+= dso__fprintf(pos
->dso
, type
, fp
);
591 printed
+= fprintf(fp
, "--\n");
598 static size_t map_groups__fprintf_maps(struct map_groups
*mg
, FILE *fp
)
600 size_t printed
= 0, i
;
601 for (i
= 0; i
< MAP__NR_TYPES
; ++i
)
602 printed
+= __map_groups__fprintf_maps(mg
, i
, fp
);
606 static size_t __map_groups__fprintf_removed_maps(struct map_groups
*mg
,
607 enum map_type type
, FILE *fp
)
612 list_for_each_entry(pos
, &mg
->removed_maps
[type
], node
) {
613 printed
+= fprintf(fp
, "Map:");
614 printed
+= map__fprintf(pos
, fp
);
616 printed
+= dso__fprintf(pos
->dso
, type
, fp
);
617 printed
+= fprintf(fp
, "--\n");
623 static size_t map_groups__fprintf_removed_maps(struct map_groups
*mg
,
626 size_t printed
= 0, i
;
627 for (i
= 0; i
< MAP__NR_TYPES
; ++i
)
628 printed
+= __map_groups__fprintf_removed_maps(mg
, i
, fp
);
632 size_t map_groups__fprintf(struct map_groups
*mg
, FILE *fp
)
634 size_t printed
= map_groups__fprintf_maps(mg
, fp
);
635 printed
+= fprintf(fp
, "Removed maps:\n");
636 return printed
+ map_groups__fprintf_removed_maps(mg
, fp
);
639 int map_groups__fixup_overlappings(struct map_groups
*mg
, struct map
*map
,
642 struct rb_root
*root
= &mg
->maps
[map
->type
];
643 struct rb_node
*next
= rb_first(root
);
647 struct map
*pos
= rb_entry(next
, struct map
, rb_node
);
648 next
= rb_next(&pos
->rb_node
);
650 if (!map__overlap(pos
, map
))
654 fputs("overlapping maps:\n", fp
);
655 map__fprintf(map
, fp
);
656 map__fprintf(pos
, fp
);
659 rb_erase(&pos
->rb_node
, root
);
661 * Now check if we need to create new maps for areas not
662 * overlapped by the new map:
664 if (map
->start
> pos
->start
) {
665 struct map
*before
= map__clone(pos
);
667 if (before
== NULL
) {
672 before
->end
= map
->start
;
673 map_groups__insert(mg
, before
);
675 map__fprintf(before
, fp
);
678 if (map
->end
< pos
->end
) {
679 struct map
*after
= map__clone(pos
);
686 after
->start
= map
->end
;
687 map_groups__insert(mg
, after
);
689 map__fprintf(after
, fp
);
693 * If we have references, just move them to a separate list.
696 list_add_tail(&pos
->node
, &mg
->removed_maps
[map
->type
]);
708 * XXX This should not really _copy_ te maps, but refcount them.
710 int map_groups__clone(struct map_groups
*mg
,
711 struct map_groups
*parent
, enum map_type type
)
714 for (nd
= rb_first(&parent
->maps
[type
]); nd
; nd
= rb_next(nd
)) {
715 struct map
*map
= rb_entry(nd
, struct map
, rb_node
);
716 struct map
*new = map__clone(map
);
719 map_groups__insert(mg
, new);
724 void maps__insert(struct rb_root
*maps
, struct map
*map
)
726 struct rb_node
**p
= &maps
->rb_node
;
727 struct rb_node
*parent
= NULL
;
728 const u64 ip
= map
->start
;
733 m
= rb_entry(parent
, struct map
, rb_node
);
740 rb_link_node(&map
->rb_node
, parent
, p
);
741 rb_insert_color(&map
->rb_node
, maps
);
744 void maps__remove(struct rb_root
*maps
, struct map
*map
)
746 rb_erase(&map
->rb_node
, maps
);
749 struct map
*maps__find(struct rb_root
*maps
, u64 ip
)
751 struct rb_node
**p
= &maps
->rb_node
;
752 struct rb_node
*parent
= NULL
;
757 m
= rb_entry(parent
, struct map
, rb_node
);
760 else if (ip
>= m
->end
)
769 struct map
*maps__first(struct rb_root
*maps
)
771 struct rb_node
*first
= rb_first(maps
);
774 return rb_entry(first
, struct map
, rb_node
);
778 struct map
*map__next(struct map
*map
)
780 struct rb_node
*next
= rb_next(&map
->rb_node
);
783 return rb_entry(next
, struct map
, rb_node
);
787 struct kmap
*map__kmap(struct map
*map
)
789 if (!map
->dso
|| !map
->dso
->kernel
) {
790 pr_err("Internal error: map__kmap with a non-kernel map\n");
793 return (struct kmap
*)(map
+ 1);
796 struct map_groups
*map__kmaps(struct map
*map
)
798 struct kmap
*kmap
= map__kmap(map
);
800 if (!kmap
|| !kmap
->kmaps
) {
801 pr_err("Internal error: map__kmaps with a non-kernel map\n");