23 #include <symbol/kallsyms.h>
24 #include <sys/utsname.h>
26 static int dso__load_kernel_sym(struct dso
*dso
, struct map
*map
,
27 symbol_filter_t filter
);
28 static int dso__load_guest_kernel_sym(struct dso
*dso
, struct map
*map
,
29 symbol_filter_t filter
);
30 int vmlinux_path__nr_entries
;
33 struct symbol_conf symbol_conf
= {
35 .try_vmlinux_path
= true,
38 .demangle_kernel
= false,
39 .cumulate_callchain
= true,
40 .show_hist_headers
= true,
44 static enum dso_binary_type binary_type_symtab
[] = {
45 DSO_BINARY_TYPE__KALLSYMS
,
46 DSO_BINARY_TYPE__GUEST_KALLSYMS
,
47 DSO_BINARY_TYPE__JAVA_JIT
,
48 DSO_BINARY_TYPE__DEBUGLINK
,
49 DSO_BINARY_TYPE__BUILD_ID_CACHE
,
50 DSO_BINARY_TYPE__FEDORA_DEBUGINFO
,
51 DSO_BINARY_TYPE__UBUNTU_DEBUGINFO
,
52 DSO_BINARY_TYPE__BUILDID_DEBUGINFO
,
53 DSO_BINARY_TYPE__SYSTEM_PATH_DSO
,
54 DSO_BINARY_TYPE__GUEST_KMODULE
,
55 DSO_BINARY_TYPE__GUEST_KMODULE_COMP
,
56 DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE
,
57 DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP
,
58 DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO
,
59 DSO_BINARY_TYPE__NOT_FOUND
,
62 #define DSO_BINARY_TYPE__SYMTAB_CNT ARRAY_SIZE(binary_type_symtab)
64 bool symbol_type__is_a(char symbol_type
, enum map_type map_type
)
66 symbol_type
= toupper(symbol_type
);
70 return symbol_type
== 'T' || symbol_type
== 'W';
72 return symbol_type
== 'D';
78 static int prefix_underscores_count(const char *str
)
80 const char *tail
= str
;
88 int __weak
arch__choose_best_symbol(struct symbol
*syma
,
89 struct symbol
*symb __maybe_unused
)
91 /* Avoid "SyS" kernel syscall aliases */
92 if (strlen(syma
->name
) >= 3 && !strncmp(syma
->name
, "SyS", 3))
94 if (strlen(syma
->name
) >= 10 && !strncmp(syma
->name
, "compat_SyS", 10))
100 static int choose_best_symbol(struct symbol
*syma
, struct symbol
*symb
)
106 /* Prefer a symbol with non zero length */
107 a
= syma
->end
- syma
->start
;
108 b
= symb
->end
- symb
->start
;
109 if ((b
== 0) && (a
> 0))
111 else if ((a
== 0) && (b
> 0))
114 /* Prefer a non weak symbol over a weak one */
115 a
= syma
->binding
== STB_WEAK
;
116 b
= symb
->binding
== STB_WEAK
;
122 /* Prefer a global symbol over a non global one */
123 a
= syma
->binding
== STB_GLOBAL
;
124 b
= symb
->binding
== STB_GLOBAL
;
130 /* Prefer a symbol with less underscores */
131 a
= prefix_underscores_count(syma
->name
);
132 b
= prefix_underscores_count(symb
->name
);
138 /* Choose the symbol with the longest name */
139 na
= strlen(syma
->name
);
140 nb
= strlen(symb
->name
);
146 return arch__choose_best_symbol(syma
, symb
);
149 void symbols__fixup_duplicate(struct rb_root
*symbols
)
152 struct symbol
*curr
, *next
;
154 nd
= rb_first(symbols
);
157 curr
= rb_entry(nd
, struct symbol
, rb_node
);
159 nd
= rb_next(&curr
->rb_node
);
160 next
= rb_entry(nd
, struct symbol
, rb_node
);
165 if (curr
->start
!= next
->start
)
168 if (choose_best_symbol(curr
, next
) == SYMBOL_A
) {
169 rb_erase(&next
->rb_node
, symbols
);
170 symbol__delete(next
);
173 nd
= rb_next(&curr
->rb_node
);
174 rb_erase(&curr
->rb_node
, symbols
);
175 symbol__delete(curr
);
180 void symbols__fixup_end(struct rb_root
*symbols
)
182 struct rb_node
*nd
, *prevnd
= rb_first(symbols
);
183 struct symbol
*curr
, *prev
;
188 curr
= rb_entry(prevnd
, struct symbol
, rb_node
);
190 for (nd
= rb_next(prevnd
); nd
; nd
= rb_next(nd
)) {
192 curr
= rb_entry(nd
, struct symbol
, rb_node
);
194 if (prev
->end
== prev
->start
&& prev
->end
!= curr
->start
)
195 prev
->end
= curr
->start
;
199 if (curr
->end
== curr
->start
)
200 curr
->end
= roundup(curr
->start
, 4096);
203 void __map_groups__fixup_end(struct map_groups
*mg
, enum map_type type
)
205 struct rb_root
*maps
= &mg
->maps
[type
];
206 struct map
*next
, *curr
;
208 curr
= maps__first(maps
);
212 for (next
= map__next(curr
); next
; next
= map__next(curr
)) {
213 curr
->end
= next
->start
;
218 * We still haven't the actual symbols, so guess the
219 * last map final address.
224 struct symbol
*symbol__new(u64 start
, u64 len
, u8 binding
, const char *name
)
226 size_t namelen
= strlen(name
) + 1;
227 struct symbol
*sym
= calloc(1, (symbol_conf
.priv_size
+
228 sizeof(*sym
) + namelen
));
232 if (symbol_conf
.priv_size
)
233 sym
= ((void *)sym
) + symbol_conf
.priv_size
;
236 sym
->end
= len
? start
+ len
: start
;
237 sym
->binding
= binding
;
238 sym
->namelen
= namelen
- 1;
240 pr_debug4("%s: %s %#" PRIx64
"-%#" PRIx64
"\n",
241 __func__
, name
, start
, sym
->end
);
242 memcpy(sym
->name
, name
, namelen
);
247 void symbol__delete(struct symbol
*sym
)
249 free(((void *)sym
) - symbol_conf
.priv_size
);
252 size_t symbol__fprintf(struct symbol
*sym
, FILE *fp
)
254 return fprintf(fp
, " %" PRIx64
"-%" PRIx64
" %c %s\n",
255 sym
->start
, sym
->end
,
256 sym
->binding
== STB_GLOBAL
? 'g' :
257 sym
->binding
== STB_LOCAL
? 'l' : 'w',
261 size_t symbol__fprintf_symname_offs(const struct symbol
*sym
,
262 const struct addr_location
*al
, FILE *fp
)
264 unsigned long offset
;
267 if (sym
&& sym
->name
) {
268 length
= fprintf(fp
, "%s", sym
->name
);
270 if (al
->addr
< sym
->end
)
271 offset
= al
->addr
- sym
->start
;
273 offset
= al
->addr
- al
->map
->start
- sym
->start
;
274 length
+= fprintf(fp
, "+0x%lx", offset
);
278 return fprintf(fp
, "[unknown]");
281 size_t symbol__fprintf_symname(const struct symbol
*sym
, FILE *fp
)
283 return symbol__fprintf_symname_offs(sym
, NULL
, fp
);
286 void symbols__delete(struct rb_root
*symbols
)
289 struct rb_node
*next
= rb_first(symbols
);
292 pos
= rb_entry(next
, struct symbol
, rb_node
);
293 next
= rb_next(&pos
->rb_node
);
294 rb_erase(&pos
->rb_node
, symbols
);
299 void symbols__insert(struct rb_root
*symbols
, struct symbol
*sym
)
301 struct rb_node
**p
= &symbols
->rb_node
;
302 struct rb_node
*parent
= NULL
;
303 const u64 ip
= sym
->start
;
308 s
= rb_entry(parent
, struct symbol
, rb_node
);
314 rb_link_node(&sym
->rb_node
, parent
, p
);
315 rb_insert_color(&sym
->rb_node
, symbols
);
318 static struct symbol
*symbols__find(struct rb_root
*symbols
, u64 ip
)
325 n
= symbols
->rb_node
;
328 struct symbol
*s
= rb_entry(n
, struct symbol
, rb_node
);
332 else if (ip
>= s
->end
)
341 static struct symbol
*symbols__first(struct rb_root
*symbols
)
343 struct rb_node
*n
= rb_first(symbols
);
346 return rb_entry(n
, struct symbol
, rb_node
);
351 static struct symbol
*symbols__next(struct symbol
*sym
)
353 struct rb_node
*n
= rb_next(&sym
->rb_node
);
356 return rb_entry(n
, struct symbol
, rb_node
);
361 struct symbol_name_rb_node
{
362 struct rb_node rb_node
;
366 static void symbols__insert_by_name(struct rb_root
*symbols
, struct symbol
*sym
)
368 struct rb_node
**p
= &symbols
->rb_node
;
369 struct rb_node
*parent
= NULL
;
370 struct symbol_name_rb_node
*symn
, *s
;
372 symn
= container_of(sym
, struct symbol_name_rb_node
, sym
);
376 s
= rb_entry(parent
, struct symbol_name_rb_node
, rb_node
);
377 if (strcmp(sym
->name
, s
->sym
.name
) < 0)
382 rb_link_node(&symn
->rb_node
, parent
, p
);
383 rb_insert_color(&symn
->rb_node
, symbols
);
386 static void symbols__sort_by_name(struct rb_root
*symbols
,
387 struct rb_root
*source
)
391 for (nd
= rb_first(source
); nd
; nd
= rb_next(nd
)) {
392 struct symbol
*pos
= rb_entry(nd
, struct symbol
, rb_node
);
393 symbols__insert_by_name(symbols
, pos
);
397 static struct symbol
*symbols__find_by_name(struct rb_root
*symbols
,
401 struct symbol_name_rb_node
*s
;
406 n
= symbols
->rb_node
;
411 s
= rb_entry(n
, struct symbol_name_rb_node
, rb_node
);
412 cmp
= arch__compare_symbol_names(name
, s
->sym
.name
);
425 /* return first symbol that has same name (if any) */
426 for (n
= rb_prev(n
); n
; n
= rb_prev(n
)) {
427 struct symbol_name_rb_node
*tmp
;
429 tmp
= rb_entry(n
, struct symbol_name_rb_node
, rb_node
);
430 if (arch__compare_symbol_names(tmp
->sym
.name
, s
->sym
.name
))
439 struct symbol
*dso__find_symbol(struct dso
*dso
,
440 enum map_type type
, u64 addr
)
442 return symbols__find(&dso
->symbols
[type
], addr
);
445 struct symbol
*dso__first_symbol(struct dso
*dso
, enum map_type type
)
447 return symbols__first(&dso
->symbols
[type
]);
450 struct symbol
*dso__next_symbol(struct symbol
*sym
)
452 return symbols__next(sym
);
455 struct symbol
*symbol__next_by_name(struct symbol
*sym
)
457 struct symbol_name_rb_node
*s
= container_of(sym
, struct symbol_name_rb_node
, sym
);
458 struct rb_node
*n
= rb_next(&s
->rb_node
);
460 return n
? &rb_entry(n
, struct symbol_name_rb_node
, rb_node
)->sym
: NULL
;
464 * Teturns first symbol that matched with @name.
466 struct symbol
*dso__find_symbol_by_name(struct dso
*dso
, enum map_type type
,
469 return symbols__find_by_name(&dso
->symbol_names
[type
], name
);
472 void dso__sort_by_name(struct dso
*dso
, enum map_type type
)
474 dso__set_sorted_by_name(dso
, type
);
475 return symbols__sort_by_name(&dso
->symbol_names
[type
],
476 &dso
->symbols
[type
]);
479 size_t dso__fprintf_symbols_by_name(struct dso
*dso
,
480 enum map_type type
, FILE *fp
)
484 struct symbol_name_rb_node
*pos
;
486 for (nd
= rb_first(&dso
->symbol_names
[type
]); nd
; nd
= rb_next(nd
)) {
487 pos
= rb_entry(nd
, struct symbol_name_rb_node
, rb_node
);
488 fprintf(fp
, "%s\n", pos
->sym
.name
);
494 int modules__parse(const char *filename
, void *arg
,
495 int (*process_module
)(void *arg
, const char *name
,
503 file
= fopen(filename
, "r");
513 line_len
= getline(&line
, &n
, file
);
526 line
[--line_len
] = '\0'; /* \n */
528 sep
= strrchr(line
, 'x');
532 hex2u64(sep
+ 1, &start
);
534 sep
= strchr(line
, ' ');
540 scnprintf(name
, sizeof(name
), "[%s]", line
);
542 err
= process_module(arg
, name
, start
);
552 struct process_kallsyms_args
{
558 * These are symbols in the kernel image, so make sure that
559 * sym is from a kernel DSO.
561 bool symbol__is_idle(struct symbol
*sym
)
563 const char * const idle_symbols
[] = {
572 "mwait_idle_with_hints",
574 "ppc64_runlatch_off",
575 "pseries_dedicated_idle_sleep",
584 for (i
= 0; idle_symbols
[i
]; i
++) {
585 if (!strcmp(idle_symbols
[i
], sym
->name
))
592 static int map__process_kallsym_symbol(void *arg
, const char *name
,
593 char type
, u64 start
)
596 struct process_kallsyms_args
*a
= arg
;
597 struct rb_root
*root
= &a
->dso
->symbols
[a
->map
->type
];
599 if (!symbol_type__is_a(type
, a
->map
->type
))
603 * module symbols are not sorted so we add all
604 * symbols, setting length to 0, and rely on
605 * symbols__fixup_end() to fix it up.
607 sym
= symbol__new(start
, 0, kallsyms2elf_type(type
), name
);
611 * We will pass the symbols to the filter later, in
612 * map__split_kallsyms, when we have split the maps per module
614 symbols__insert(root
, sym
);
620 * Loads the function entries in /proc/kallsyms into kernel_map->dso,
621 * so that we can in the next step set the symbol ->end address and then
622 * call kernel_maps__split_kallsyms.
624 static int dso__load_all_kallsyms(struct dso
*dso
, const char *filename
,
627 struct process_kallsyms_args args
= { .map
= map
, .dso
= dso
, };
628 return kallsyms__parse(filename
, &args
, map__process_kallsym_symbol
);
631 static int dso__split_kallsyms_for_kcore(struct dso
*dso
, struct map
*map
,
632 symbol_filter_t filter
)
634 struct map_groups
*kmaps
= map__kmaps(map
);
635 struct map
*curr_map
;
637 int count
= 0, moved
= 0;
638 struct rb_root
*root
= &dso
->symbols
[map
->type
];
639 struct rb_node
*next
= rb_first(root
);
647 pos
= rb_entry(next
, struct symbol
, rb_node
);
648 next
= rb_next(&pos
->rb_node
);
650 module
= strchr(pos
->name
, '\t');
654 curr_map
= map_groups__find(kmaps
, map
->type
, pos
->start
);
656 if (!curr_map
|| (filter
&& filter(curr_map
, pos
))) {
657 rb_erase(&pos
->rb_node
, root
);
660 pos
->start
-= curr_map
->start
- curr_map
->pgoff
;
662 pos
->end
-= curr_map
->start
- curr_map
->pgoff
;
663 if (curr_map
!= map
) {
664 rb_erase(&pos
->rb_node
, root
);
666 &curr_map
->dso
->symbols
[curr_map
->type
],
675 /* Symbols have been adjusted */
676 dso
->adjust_symbols
= 1;
678 return count
+ moved
;
682 * Split the symbols into maps, making sure there are no overlaps, i.e. the
683 * kernel range is broken in several maps, named [kernel].N, as we don't have
684 * the original ELF section names vmlinux have.
686 static int dso__split_kallsyms(struct dso
*dso
, struct map
*map
, u64 delta
,
687 symbol_filter_t filter
)
689 struct map_groups
*kmaps
= map__kmaps(map
);
690 struct machine
*machine
;
691 struct map
*curr_map
= map
;
693 int count
= 0, moved
= 0;
694 struct rb_root
*root
= &dso
->symbols
[map
->type
];
695 struct rb_node
*next
= rb_first(root
);
696 int kernel_range
= 0;
701 machine
= kmaps
->machine
;
706 pos
= rb_entry(next
, struct symbol
, rb_node
);
707 next
= rb_next(&pos
->rb_node
);
709 module
= strchr(pos
->name
, '\t');
711 if (!symbol_conf
.use_modules
)
716 if (strcmp(curr_map
->dso
->short_name
, module
)) {
717 if (curr_map
!= map
&&
718 dso
->kernel
== DSO_TYPE_GUEST_KERNEL
&&
719 machine__is_default_guest(machine
)) {
721 * We assume all symbols of a module are
722 * continuous in * kallsyms, so curr_map
723 * points to a module and all its
724 * symbols are in its kmap. Mark it as
727 dso__set_loaded(curr_map
->dso
,
731 curr_map
= map_groups__find_by_name(kmaps
,
733 if (curr_map
== NULL
) {
734 pr_debug("%s/proc/{kallsyms,modules} "
735 "inconsistency while looking "
736 "for \"%s\" module!\n",
737 machine
->root_dir
, module
);
742 if (curr_map
->dso
->loaded
&&
743 !machine__is_default_guest(machine
))
747 * So that we look just like we get from .ko files,
748 * i.e. not prelinked, relative to map->start.
750 pos
->start
= curr_map
->map_ip(curr_map
, pos
->start
);
751 pos
->end
= curr_map
->map_ip(curr_map
, pos
->end
);
752 } else if (curr_map
!= map
) {
753 char dso_name
[PATH_MAX
];
757 /* Kernel was relocated at boot time */
767 if (dso
->kernel
== DSO_TYPE_GUEST_KERNEL
)
768 snprintf(dso_name
, sizeof(dso_name
),
772 snprintf(dso_name
, sizeof(dso_name
),
776 ndso
= dso__new(dso_name
);
780 ndso
->kernel
= dso
->kernel
;
782 curr_map
= map__new2(pos
->start
, ndso
, map
->type
);
783 if (curr_map
== NULL
) {
788 curr_map
->map_ip
= curr_map
->unmap_ip
= identity__map_ip
;
789 map_groups__insert(kmaps
, curr_map
);
792 /* Kernel was relocated at boot time */
797 if (filter
&& filter(curr_map
, pos
)) {
798 discard_symbol
: rb_erase(&pos
->rb_node
, root
);
801 if (curr_map
!= map
) {
802 rb_erase(&pos
->rb_node
, root
);
803 symbols__insert(&curr_map
->dso
->symbols
[curr_map
->type
], pos
);
810 if (curr_map
!= map
&&
811 dso
->kernel
== DSO_TYPE_GUEST_KERNEL
&&
812 machine__is_default_guest(kmaps
->machine
)) {
813 dso__set_loaded(curr_map
->dso
, curr_map
->type
);
816 return count
+ moved
;
819 bool symbol__restricted_filename(const char *filename
,
820 const char *restricted_filename
)
822 bool restricted
= false;
824 if (symbol_conf
.kptr_restrict
) {
825 char *r
= realpath(filename
, NULL
);
828 restricted
= strcmp(r
, restricted_filename
) == 0;
838 struct rb_node rb_node
;
843 static void add_module(struct module_info
*mi
, struct rb_root
*modules
)
845 struct rb_node
**p
= &modules
->rb_node
;
846 struct rb_node
*parent
= NULL
;
847 struct module_info
*m
;
851 m
= rb_entry(parent
, struct module_info
, rb_node
);
852 if (strcmp(mi
->name
, m
->name
) < 0)
857 rb_link_node(&mi
->rb_node
, parent
, p
);
858 rb_insert_color(&mi
->rb_node
, modules
);
861 static void delete_modules(struct rb_root
*modules
)
863 struct module_info
*mi
;
864 struct rb_node
*next
= rb_first(modules
);
867 mi
= rb_entry(next
, struct module_info
, rb_node
);
868 next
= rb_next(&mi
->rb_node
);
869 rb_erase(&mi
->rb_node
, modules
);
875 static struct module_info
*find_module(const char *name
,
876 struct rb_root
*modules
)
878 struct rb_node
*n
= modules
->rb_node
;
881 struct module_info
*m
;
884 m
= rb_entry(n
, struct module_info
, rb_node
);
885 cmp
= strcmp(name
, m
->name
);
897 static int __read_proc_modules(void *arg
, const char *name
, u64 start
)
899 struct rb_root
*modules
= arg
;
900 struct module_info
*mi
;
902 mi
= zalloc(sizeof(struct module_info
));
906 mi
->name
= strdup(name
);
914 add_module(mi
, modules
);
919 static int read_proc_modules(const char *filename
, struct rb_root
*modules
)
921 if (symbol__restricted_filename(filename
, "/proc/modules"))
924 if (modules__parse(filename
, modules
, __read_proc_modules
)) {
925 delete_modules(modules
);
932 int compare_proc_modules(const char *from
, const char *to
)
934 struct rb_root from_modules
= RB_ROOT
;
935 struct rb_root to_modules
= RB_ROOT
;
936 struct rb_node
*from_node
, *to_node
;
937 struct module_info
*from_m
, *to_m
;
940 if (read_proc_modules(from
, &from_modules
))
943 if (read_proc_modules(to
, &to_modules
))
944 goto out_delete_from
;
946 from_node
= rb_first(&from_modules
);
947 to_node
= rb_first(&to_modules
);
952 from_m
= rb_entry(from_node
, struct module_info
, rb_node
);
953 to_m
= rb_entry(to_node
, struct module_info
, rb_node
);
955 if (from_m
->start
!= to_m
->start
||
956 strcmp(from_m
->name
, to_m
->name
))
959 from_node
= rb_next(from_node
);
960 to_node
= rb_next(to_node
);
963 if (!from_node
&& !to_node
)
966 delete_modules(&to_modules
);
968 delete_modules(&from_modules
);
973 static int do_validate_kcore_modules(const char *filename
, struct map
*map
,
974 struct map_groups
*kmaps
)
976 struct rb_root modules
= RB_ROOT
;
980 err
= read_proc_modules(filename
, &modules
);
984 old_map
= map_groups__first(kmaps
, map
->type
);
986 struct map
*next
= map_groups__next(old_map
);
987 struct module_info
*mi
;
989 if (old_map
== map
|| old_map
->start
== map
->start
) {
995 /* Module must be in memory at the same address */
996 mi
= find_module(old_map
->dso
->short_name
, &modules
);
997 if (!mi
|| mi
->start
!= old_map
->start
) {
1005 delete_modules(&modules
);
1010 * If kallsyms is referenced by name then we look for filename in the same
1013 static bool filename_from_kallsyms_filename(char *filename
,
1014 const char *base_name
,
1015 const char *kallsyms_filename
)
1019 strcpy(filename
, kallsyms_filename
);
1020 name
= strrchr(filename
, '/');
1026 if (!strcmp(name
, "kallsyms")) {
1027 strcpy(name
, base_name
);
1034 static int validate_kcore_modules(const char *kallsyms_filename
,
1037 struct map_groups
*kmaps
= map__kmaps(map
);
1038 char modules_filename
[PATH_MAX
];
1043 if (!filename_from_kallsyms_filename(modules_filename
, "modules",
1047 if (do_validate_kcore_modules(modules_filename
, map
, kmaps
))
1053 static int validate_kcore_addresses(const char *kallsyms_filename
,
1056 struct kmap
*kmap
= map__kmap(map
);
1061 if (kmap
->ref_reloc_sym
&& kmap
->ref_reloc_sym
->name
) {
1064 start
= kallsyms__get_function_start(kallsyms_filename
,
1065 kmap
->ref_reloc_sym
->name
);
1066 if (start
!= kmap
->ref_reloc_sym
->addr
)
1070 return validate_kcore_modules(kallsyms_filename
, map
);
1073 struct kcore_mapfn_data
{
1076 struct list_head maps
;
1079 static int kcore_mapfn(u64 start
, u64 len
, u64 pgoff
, void *data
)
1081 struct kcore_mapfn_data
*md
= data
;
1084 map
= map__new2(start
, md
->dso
, md
->type
);
1088 map
->end
= map
->start
+ len
;
1091 list_add(&map
->node
, &md
->maps
);
1096 static int dso__load_kcore(struct dso
*dso
, struct map
*map
,
1097 const char *kallsyms_filename
)
1099 struct map_groups
*kmaps
= map__kmaps(map
);
1100 struct machine
*machine
;
1101 struct kcore_mapfn_data md
;
1102 struct map
*old_map
, *new_map
, *replacement_map
= NULL
;
1105 char kcore_filename
[PATH_MAX
];
1111 machine
= kmaps
->machine
;
1113 /* This function requires that the map is the kernel map */
1114 if (map
!= machine
->vmlinux_maps
[map
->type
])
1117 if (!filename_from_kallsyms_filename(kcore_filename
, "kcore",
1121 /* Modules and kernel must be present at their original addresses */
1122 if (validate_kcore_addresses(kallsyms_filename
, map
))
1126 md
.type
= map
->type
;
1127 INIT_LIST_HEAD(&md
.maps
);
1129 fd
= open(kcore_filename
, O_RDONLY
);
1133 /* Read new maps into temporary lists */
1134 err
= file__read_maps(fd
, md
.type
== MAP__FUNCTION
, kcore_mapfn
, &md
,
1138 dso
->is_64_bit
= is_64_bit
;
1140 if (list_empty(&md
.maps
)) {
1145 /* Remove old maps */
1146 old_map
= map_groups__first(kmaps
, map
->type
);
1148 struct map
*next
= map_groups__next(old_map
);
1151 map_groups__remove(kmaps
, old_map
);
1155 /* Find the kernel map using the first symbol */
1156 sym
= dso__first_symbol(dso
, map
->type
);
1157 list_for_each_entry(new_map
, &md
.maps
, node
) {
1158 if (sym
&& sym
->start
>= new_map
->start
&&
1159 sym
->start
< new_map
->end
) {
1160 replacement_map
= new_map
;
1165 if (!replacement_map
)
1166 replacement_map
= list_entry(md
.maps
.next
, struct map
, node
);
1169 while (!list_empty(&md
.maps
)) {
1170 new_map
= list_entry(md
.maps
.next
, struct map
, node
);
1171 list_del(&new_map
->node
);
1172 if (new_map
== replacement_map
) {
1173 map
->start
= new_map
->start
;
1174 map
->end
= new_map
->end
;
1175 map
->pgoff
= new_map
->pgoff
;
1176 map
->map_ip
= new_map
->map_ip
;
1177 map
->unmap_ip
= new_map
->unmap_ip
;
1178 map__delete(new_map
);
1179 /* Ensure maps are correctly ordered */
1180 map_groups__remove(kmaps
, map
);
1181 map_groups__insert(kmaps
, map
);
1183 map_groups__insert(kmaps
, new_map
);
1188 * Set the data type and long name so that kcore can be read via
1189 * dso__data_read_addr().
1191 if (dso
->kernel
== DSO_TYPE_GUEST_KERNEL
)
1192 dso
->binary_type
= DSO_BINARY_TYPE__GUEST_KCORE
;
1194 dso
->binary_type
= DSO_BINARY_TYPE__KCORE
;
1195 dso__set_long_name(dso
, strdup(kcore_filename
), true);
1199 if (map
->type
== MAP__FUNCTION
)
1200 pr_debug("Using %s for kernel object code\n", kcore_filename
);
1202 pr_debug("Using %s for kernel data\n", kcore_filename
);
1207 while (!list_empty(&md
.maps
)) {
1208 map
= list_entry(md
.maps
.next
, struct map
, node
);
1209 list_del(&map
->node
);
1217 * If the kernel is relocated at boot time, kallsyms won't match. Compute the
1218 * delta based on the relocation reference symbol.
1220 static int kallsyms__delta(struct map
*map
, const char *filename
, u64
*delta
)
1222 struct kmap
*kmap
= map__kmap(map
);
1228 if (!kmap
->ref_reloc_sym
|| !kmap
->ref_reloc_sym
->name
)
1231 addr
= kallsyms__get_function_start(filename
,
1232 kmap
->ref_reloc_sym
->name
);
1236 *delta
= addr
- kmap
->ref_reloc_sym
->addr
;
1240 int dso__load_kallsyms(struct dso
*dso
, const char *filename
,
1241 struct map
*map
, symbol_filter_t filter
)
1245 if (symbol__restricted_filename(filename
, "/proc/kallsyms"))
1248 if (dso__load_all_kallsyms(dso
, filename
, map
) < 0)
1251 if (kallsyms__delta(map
, filename
, &delta
))
1254 symbols__fixup_duplicate(&dso
->symbols
[map
->type
]);
1255 symbols__fixup_end(&dso
->symbols
[map
->type
]);
1257 if (dso
->kernel
== DSO_TYPE_GUEST_KERNEL
)
1258 dso
->symtab_type
= DSO_BINARY_TYPE__GUEST_KALLSYMS
;
1260 dso
->symtab_type
= DSO_BINARY_TYPE__KALLSYMS
;
1262 if (!dso__load_kcore(dso
, map
, filename
))
1263 return dso__split_kallsyms_for_kcore(dso
, map
, filter
);
1265 return dso__split_kallsyms(dso
, map
, delta
, filter
);
1268 static int dso__load_perf_map(struct dso
*dso
, struct map
*map
,
1269 symbol_filter_t filter
)
1276 file
= fopen(dso
->long_name
, "r");
1280 while (!feof(file
)) {
1285 line_len
= getline(&line
, &n
, file
);
1292 line
[--line_len
] = '\0'; /* \n */
1294 len
= hex2u64(line
, &start
);
1297 if (len
+ 2 >= line_len
)
1300 len
+= hex2u64(line
+ len
, &size
);
1303 if (len
+ 2 >= line_len
)
1306 sym
= symbol__new(start
, size
, STB_GLOBAL
, line
+ len
);
1309 goto out_delete_line
;
1311 if (filter
&& filter(map
, sym
))
1312 symbol__delete(sym
);
1314 symbols__insert(&dso
->symbols
[map
->type
], sym
);
1330 static bool dso__is_compatible_symtab_type(struct dso
*dso
, bool kmod
,
1331 enum dso_binary_type type
)
1334 case DSO_BINARY_TYPE__JAVA_JIT
:
1335 case DSO_BINARY_TYPE__DEBUGLINK
:
1336 case DSO_BINARY_TYPE__SYSTEM_PATH_DSO
:
1337 case DSO_BINARY_TYPE__FEDORA_DEBUGINFO
:
1338 case DSO_BINARY_TYPE__UBUNTU_DEBUGINFO
:
1339 case DSO_BINARY_TYPE__BUILDID_DEBUGINFO
:
1340 case DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO
:
1341 return !kmod
&& dso
->kernel
== DSO_TYPE_USER
;
1343 case DSO_BINARY_TYPE__KALLSYMS
:
1344 case DSO_BINARY_TYPE__VMLINUX
:
1345 case DSO_BINARY_TYPE__KCORE
:
1346 return dso
->kernel
== DSO_TYPE_KERNEL
;
1348 case DSO_BINARY_TYPE__GUEST_KALLSYMS
:
1349 case DSO_BINARY_TYPE__GUEST_VMLINUX
:
1350 case DSO_BINARY_TYPE__GUEST_KCORE
:
1351 return dso
->kernel
== DSO_TYPE_GUEST_KERNEL
;
1353 case DSO_BINARY_TYPE__GUEST_KMODULE
:
1354 case DSO_BINARY_TYPE__GUEST_KMODULE_COMP
:
1355 case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE
:
1356 case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP
:
1358 * kernel modules know their symtab type - it's set when
1359 * creating a module dso in machine__new_module().
1361 return kmod
&& dso
->symtab_type
== type
;
1363 case DSO_BINARY_TYPE__BUILD_ID_CACHE
:
1366 case DSO_BINARY_TYPE__NOT_FOUND
:
1372 int dso__load(struct dso
*dso
, struct map
*map
, symbol_filter_t filter
)
1377 struct machine
*machine
;
1378 char *root_dir
= (char *) "";
1380 struct symsrc ss_
[2];
1381 struct symsrc
*syms_ss
= NULL
, *runtime_ss
= NULL
;
1384 pthread_mutex_lock(&dso
->lock
);
1386 /* check again under the dso->lock */
1387 if (dso__loaded(dso
, map
->type
)) {
1393 if (dso
->kernel
== DSO_TYPE_KERNEL
)
1394 ret
= dso__load_kernel_sym(dso
, map
, filter
);
1395 else if (dso
->kernel
== DSO_TYPE_GUEST_KERNEL
)
1396 ret
= dso__load_guest_kernel_sym(dso
, map
, filter
);
1401 if (map
->groups
&& map
->groups
->machine
)
1402 machine
= map
->groups
->machine
;
1406 dso
->adjust_symbols
= 0;
1408 if (strncmp(dso
->name
, "/tmp/perf-", 10) == 0) {
1411 if (lstat(dso
->name
, &st
) < 0)
1414 if (st
.st_uid
&& (st
.st_uid
!= geteuid())) {
1415 pr_warning("File %s not owned by current user or root, "
1416 "ignoring it.\n", dso
->name
);
1420 ret
= dso__load_perf_map(dso
, map
, filter
);
1421 dso
->symtab_type
= ret
> 0 ? DSO_BINARY_TYPE__JAVA_JIT
:
1422 DSO_BINARY_TYPE__NOT_FOUND
;
1427 root_dir
= machine
->root_dir
;
1429 name
= malloc(PATH_MAX
);
1433 kmod
= dso
->symtab_type
== DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE
||
1434 dso
->symtab_type
== DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP
||
1435 dso
->symtab_type
== DSO_BINARY_TYPE__GUEST_KMODULE
||
1436 dso
->symtab_type
== DSO_BINARY_TYPE__GUEST_KMODULE_COMP
;
1439 * Iterate over candidate debug images.
1440 * Keep track of "interesting" ones (those which have a symtab, dynsym,
1441 * and/or opd section) for processing.
1443 for (i
= 0; i
< DSO_BINARY_TYPE__SYMTAB_CNT
; i
++) {
1444 struct symsrc
*ss
= &ss_
[ss_pos
];
1445 bool next_slot
= false;
1447 enum dso_binary_type symtab_type
= binary_type_symtab
[i
];
1449 if (!dso__is_compatible_symtab_type(dso
, kmod
, symtab_type
))
1452 if (dso__read_binary_type_filename(dso
, symtab_type
,
1453 root_dir
, name
, PATH_MAX
))
1456 /* Name is now the name of the next image to try */
1457 if (symsrc__init(ss
, dso
, name
, symtab_type
) < 0)
1460 if (!syms_ss
&& symsrc__has_symtab(ss
)) {
1463 if (!dso
->symsrc_filename
)
1464 dso
->symsrc_filename
= strdup(name
);
1467 if (!runtime_ss
&& symsrc__possibly_runtime(ss
)) {
1475 if (syms_ss
&& runtime_ss
)
1478 symsrc__destroy(ss
);
1483 if (!runtime_ss
&& !syms_ss
)
1486 if (runtime_ss
&& !syms_ss
) {
1487 syms_ss
= runtime_ss
;
1490 /* We'll have to hope for the best */
1491 if (!runtime_ss
&& syms_ss
)
1492 runtime_ss
= syms_ss
;
1495 ret
= dso__load_sym(dso
, map
, syms_ss
, runtime_ss
, filter
, kmod
);
1502 nr_plt
= dso__synthesize_plt_symbols(dso
, runtime_ss
, map
, filter
);
1507 for (; ss_pos
> 0; ss_pos
--)
1508 symsrc__destroy(&ss_
[ss_pos
- 1]);
1511 if (ret
< 0 && strstr(dso
->name
, " (deleted)") != NULL
)
1514 dso__set_loaded(dso
, map
->type
);
1515 pthread_mutex_unlock(&dso
->lock
);
1520 struct map
*map_groups__find_by_name(struct map_groups
*mg
,
1521 enum map_type type
, const char *name
)
1523 struct rb_root
*maps
= &mg
->maps
[type
];
1526 for (map
= maps__first(maps
); map
; map
= map__next(map
)) {
1527 if (map
->dso
&& strcmp(map
->dso
->short_name
, name
) == 0)
1534 int dso__load_vmlinux(struct dso
*dso
, struct map
*map
,
1535 const char *vmlinux
, bool vmlinux_allocated
,
1536 symbol_filter_t filter
)
1540 char symfs_vmlinux
[PATH_MAX
];
1541 enum dso_binary_type symtab_type
;
1543 if (vmlinux
[0] == '/')
1544 snprintf(symfs_vmlinux
, sizeof(symfs_vmlinux
), "%s", vmlinux
);
1546 symbol__join_symfs(symfs_vmlinux
, vmlinux
);
1548 if (dso
->kernel
== DSO_TYPE_GUEST_KERNEL
)
1549 symtab_type
= DSO_BINARY_TYPE__GUEST_VMLINUX
;
1551 symtab_type
= DSO_BINARY_TYPE__VMLINUX
;
1553 if (symsrc__init(&ss
, dso
, symfs_vmlinux
, symtab_type
))
1556 err
= dso__load_sym(dso
, map
, &ss
, &ss
, filter
, 0);
1557 symsrc__destroy(&ss
);
1560 if (dso
->kernel
== DSO_TYPE_GUEST_KERNEL
)
1561 dso
->binary_type
= DSO_BINARY_TYPE__GUEST_VMLINUX
;
1563 dso
->binary_type
= DSO_BINARY_TYPE__VMLINUX
;
1564 dso__set_long_name(dso
, vmlinux
, vmlinux_allocated
);
1565 dso__set_loaded(dso
, map
->type
);
1566 pr_debug("Using %s for symbols\n", symfs_vmlinux
);
1572 int dso__load_vmlinux_path(struct dso
*dso
, struct map
*map
,
1573 symbol_filter_t filter
)
1576 char *filename
= NULL
;
1578 if (!symbol_conf
.ignore_vmlinux_buildid
)
1579 filename
= dso__build_id_filename(dso
, NULL
, 0);
1580 if (filename
!= NULL
) {
1581 err
= dso__load_vmlinux(dso
, map
, filename
, true, filter
);
1587 pr_debug("Looking at the vmlinux_path (%d entries long)\n",
1588 vmlinux_path__nr_entries
+ 1);
1590 for (i
= 0; i
< vmlinux_path__nr_entries
; ++i
) {
1591 err
= dso__load_vmlinux(dso
, map
, vmlinux_path
[i
], false, filter
);
1599 static int find_matching_kcore(struct map
*map
, char *dir
, size_t dir_sz
)
1601 char kallsyms_filename
[PATH_MAX
];
1602 struct dirent
*dent
;
1614 if (dent
->d_type
!= DT_DIR
)
1616 scnprintf(kallsyms_filename
, sizeof(kallsyms_filename
),
1617 "%s/%s/kallsyms", dir
, dent
->d_name
);
1618 if (!validate_kcore_addresses(kallsyms_filename
, map
)) {
1619 strlcpy(dir
, kallsyms_filename
, dir_sz
);
1630 static char *dso__find_kallsyms(struct dso
*dso
, struct map
*map
)
1632 u8 host_build_id
[BUILD_ID_SIZE
];
1633 char sbuild_id
[BUILD_ID_SIZE
* 2 + 1];
1634 bool is_host
= false;
1635 char path
[PATH_MAX
];
1637 if (!dso
->has_build_id
) {
1639 * Last resort, if we don't have a build-id and couldn't find
1640 * any vmlinux file, try the running kernel kallsyms table.
1645 if (sysfs__read_build_id("/sys/kernel/notes", host_build_id
,
1646 sizeof(host_build_id
)) == 0)
1647 is_host
= dso__build_id_equal(dso
, host_build_id
);
1649 build_id__sprintf(dso
->build_id
, sizeof(dso
->build_id
), sbuild_id
);
1651 scnprintf(path
, sizeof(path
), "%s/[kernel.kcore]/%s", buildid_dir
,
1654 /* Use /proc/kallsyms if possible */
1659 /* If no cached kcore go with /proc/kallsyms */
1666 * Do not check the build-id cache, until we know we cannot use
1669 fd
= open("/proc/kcore", O_RDONLY
);
1672 /* If module maps match go with /proc/kallsyms */
1673 if (!validate_kcore_addresses("/proc/kallsyms", map
))
1677 /* Find kallsyms in build-id cache with kcore */
1678 if (!find_matching_kcore(map
, path
, sizeof(path
)))
1679 return strdup(path
);
1684 /* Find kallsyms in build-id cache with kcore */
1685 if (!find_matching_kcore(map
, path
, sizeof(path
)))
1686 return strdup(path
);
1688 scnprintf(path
, sizeof(path
), "%s/[kernel.kallsyms]/%s",
1689 buildid_dir
, sbuild_id
);
1691 if (access(path
, F_OK
)) {
1692 pr_err("No kallsyms or vmlinux with build-id %s was found\n",
1697 return strdup(path
);
1700 return strdup("/proc/kallsyms");
1703 static int dso__load_kernel_sym(struct dso
*dso
, struct map
*map
,
1704 symbol_filter_t filter
)
1707 const char *kallsyms_filename
= NULL
;
1708 char *kallsyms_allocated_filename
= NULL
;
1710 * Step 1: if the user specified a kallsyms or vmlinux filename, use
1711 * it and only it, reporting errors to the user if it cannot be used.
1713 * For instance, try to analyse an ARM perf.data file _without_ a
1714 * build-id, or if the user specifies the wrong path to the right
1715 * vmlinux file, obviously we can't fallback to another vmlinux (a
1716 * x86_86 one, on the machine where analysis is being performed, say),
1717 * or worse, /proc/kallsyms.
1719 * If the specified file _has_ a build-id and there is a build-id
1720 * section in the perf.data file, we will still do the expected
1721 * validation in dso__load_vmlinux and will bail out if they don't
1724 if (symbol_conf
.kallsyms_name
!= NULL
) {
1725 kallsyms_filename
= symbol_conf
.kallsyms_name
;
1729 if (!symbol_conf
.ignore_vmlinux
&& symbol_conf
.vmlinux_name
!= NULL
) {
1730 return dso__load_vmlinux(dso
, map
, symbol_conf
.vmlinux_name
,
1734 if (!symbol_conf
.ignore_vmlinux
&& vmlinux_path
!= NULL
) {
1735 err
= dso__load_vmlinux_path(dso
, map
, filter
);
1740 /* do not try local files if a symfs was given */
1741 if (symbol_conf
.symfs
[0] != 0)
1744 kallsyms_allocated_filename
= dso__find_kallsyms(dso
, map
);
1745 if (!kallsyms_allocated_filename
)
1748 kallsyms_filename
= kallsyms_allocated_filename
;
1751 err
= dso__load_kallsyms(dso
, kallsyms_filename
, map
, filter
);
1753 pr_debug("Using %s for symbols\n", kallsyms_filename
);
1754 free(kallsyms_allocated_filename
);
1756 if (err
> 0 && !dso__is_kcore(dso
)) {
1757 dso
->binary_type
= DSO_BINARY_TYPE__KALLSYMS
;
1758 dso__set_long_name(dso
, "[kernel.kallsyms]", false);
1759 map__fixup_start(map
);
1760 map__fixup_end(map
);
1766 static int dso__load_guest_kernel_sym(struct dso
*dso
, struct map
*map
,
1767 symbol_filter_t filter
)
1770 const char *kallsyms_filename
= NULL
;
1771 struct machine
*machine
;
1772 char path
[PATH_MAX
];
1775 pr_debug("Guest kernel map hasn't the point to groups\n");
1778 machine
= map
->groups
->machine
;
1780 if (machine__is_default_guest(machine
)) {
1782 * if the user specified a vmlinux filename, use it and only
1783 * it, reporting errors to the user if it cannot be used.
1784 * Or use file guest_kallsyms inputted by user on commandline
1786 if (symbol_conf
.default_guest_vmlinux_name
!= NULL
) {
1787 err
= dso__load_vmlinux(dso
, map
,
1788 symbol_conf
.default_guest_vmlinux_name
,
1793 kallsyms_filename
= symbol_conf
.default_guest_kallsyms
;
1794 if (!kallsyms_filename
)
1797 sprintf(path
, "%s/proc/kallsyms", machine
->root_dir
);
1798 kallsyms_filename
= path
;
1801 err
= dso__load_kallsyms(dso
, kallsyms_filename
, map
, filter
);
1803 pr_debug("Using %s for symbols\n", kallsyms_filename
);
1804 if (err
> 0 && !dso__is_kcore(dso
)) {
1805 dso
->binary_type
= DSO_BINARY_TYPE__GUEST_KALLSYMS
;
1806 machine__mmap_name(machine
, path
, sizeof(path
));
1807 dso__set_long_name(dso
, strdup(path
), true);
1808 map__fixup_start(map
);
1809 map__fixup_end(map
);
1815 static void vmlinux_path__exit(void)
1817 while (--vmlinux_path__nr_entries
>= 0)
1818 zfree(&vmlinux_path
[vmlinux_path__nr_entries
]);
1819 vmlinux_path__nr_entries
= 0;
1821 zfree(&vmlinux_path
);
1824 static int vmlinux_path__init(struct perf_session_env
*env
)
1828 char *kernel_version
;
1830 vmlinux_path
= malloc(sizeof(char *) * 6);
1831 if (vmlinux_path
== NULL
)
1834 vmlinux_path
[vmlinux_path__nr_entries
] = strdup("vmlinux");
1835 if (vmlinux_path
[vmlinux_path__nr_entries
] == NULL
)
1837 ++vmlinux_path__nr_entries
;
1838 vmlinux_path
[vmlinux_path__nr_entries
] = strdup("/boot/vmlinux");
1839 if (vmlinux_path
[vmlinux_path__nr_entries
] == NULL
)
1841 ++vmlinux_path__nr_entries
;
1843 /* only try kernel version if no symfs was given */
1844 if (symbol_conf
.symfs
[0] != 0)
1848 kernel_version
= env
->os_release
;
1850 if (uname(&uts
) < 0)
1853 kernel_version
= uts
.release
;
1856 snprintf(bf
, sizeof(bf
), "/boot/vmlinux-%s", kernel_version
);
1857 vmlinux_path
[vmlinux_path__nr_entries
] = strdup(bf
);
1858 if (vmlinux_path
[vmlinux_path__nr_entries
] == NULL
)
1860 ++vmlinux_path__nr_entries
;
1861 snprintf(bf
, sizeof(bf
), "/usr/lib/debug/boot/vmlinux-%s",
1863 vmlinux_path
[vmlinux_path__nr_entries
] = strdup(bf
);
1864 if (vmlinux_path
[vmlinux_path__nr_entries
] == NULL
)
1866 ++vmlinux_path__nr_entries
;
1867 snprintf(bf
, sizeof(bf
), "/lib/modules/%s/build/vmlinux", kernel_version
);
1868 vmlinux_path
[vmlinux_path__nr_entries
] = strdup(bf
);
1869 if (vmlinux_path
[vmlinux_path__nr_entries
] == NULL
)
1871 ++vmlinux_path__nr_entries
;
1872 snprintf(bf
, sizeof(bf
), "/usr/lib/debug/lib/modules/%s/vmlinux",
1874 vmlinux_path
[vmlinux_path__nr_entries
] = strdup(bf
);
1875 if (vmlinux_path
[vmlinux_path__nr_entries
] == NULL
)
1877 ++vmlinux_path__nr_entries
;
1882 vmlinux_path__exit();
1886 int setup_list(struct strlist
**list
, const char *list_str
,
1887 const char *list_name
)
1889 if (list_str
== NULL
)
1892 *list
= strlist__new(true, list_str
);
1894 pr_err("problems parsing %s list\n", list_name
);
1900 int setup_intlist(struct intlist
**list
, const char *list_str
,
1901 const char *list_name
)
1903 if (list_str
== NULL
)
1906 *list
= intlist__new(list_str
);
1908 pr_err("problems parsing %s list\n", list_name
);
1914 static bool symbol__read_kptr_restrict(void)
1918 if (geteuid() != 0) {
1919 FILE *fp
= fopen("/proc/sys/kernel/kptr_restrict", "r");
1923 if (fgets(line
, sizeof(line
), fp
) != NULL
)
1924 value
= atoi(line
) != 0;
1933 int symbol__init(struct perf_session_env
*env
)
1937 if (symbol_conf
.initialized
)
1940 symbol_conf
.priv_size
= PERF_ALIGN(symbol_conf
.priv_size
, sizeof(u64
));
1944 if (symbol_conf
.sort_by_name
)
1945 symbol_conf
.priv_size
+= (sizeof(struct symbol_name_rb_node
) -
1946 sizeof(struct symbol
));
1948 if (symbol_conf
.try_vmlinux_path
&& vmlinux_path__init(env
) < 0)
1951 if (symbol_conf
.field_sep
&& *symbol_conf
.field_sep
== '.') {
1952 pr_err("'.' is the only non valid --field-separator argument\n");
1956 if (setup_list(&symbol_conf
.dso_list
,
1957 symbol_conf
.dso_list_str
, "dso") < 0)
1960 if (setup_list(&symbol_conf
.comm_list
,
1961 symbol_conf
.comm_list_str
, "comm") < 0)
1962 goto out_free_dso_list
;
1964 if (setup_intlist(&symbol_conf
.pid_list
,
1965 symbol_conf
.pid_list_str
, "pid") < 0)
1966 goto out_free_comm_list
;
1968 if (setup_intlist(&symbol_conf
.tid_list
,
1969 symbol_conf
.tid_list_str
, "tid") < 0)
1970 goto out_free_pid_list
;
1972 if (setup_list(&symbol_conf
.sym_list
,
1973 symbol_conf
.sym_list_str
, "symbol") < 0)
1974 goto out_free_tid_list
;
1977 * A path to symbols of "/" is identical to ""
1978 * reset here for simplicity.
1980 symfs
= realpath(symbol_conf
.symfs
, NULL
);
1982 symfs
= symbol_conf
.symfs
;
1983 if (strcmp(symfs
, "/") == 0)
1984 symbol_conf
.symfs
= "";
1985 if (symfs
!= symbol_conf
.symfs
)
1986 free((void *)symfs
);
1988 symbol_conf
.kptr_restrict
= symbol__read_kptr_restrict();
1990 symbol_conf
.initialized
= true;
1994 intlist__delete(symbol_conf
.tid_list
);
1996 intlist__delete(symbol_conf
.pid_list
);
1998 strlist__delete(symbol_conf
.comm_list
);
2000 strlist__delete(symbol_conf
.dso_list
);
2004 void symbol__exit(void)
2006 if (!symbol_conf
.initialized
)
2008 strlist__delete(symbol_conf
.sym_list
);
2009 strlist__delete(symbol_conf
.dso_list
);
2010 strlist__delete(symbol_conf
.comm_list
);
2011 intlist__delete(symbol_conf
.tid_list
);
2012 intlist__delete(symbol_conf
.pid_list
);
2013 vmlinux_path__exit();
2014 symbol_conf
.sym_list
= symbol_conf
.dso_list
= symbol_conf
.comm_list
= NULL
;
2015 symbol_conf
.initialized
= false;