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 maps
*maps
= &mg
->maps
[type
];
206 struct map
*next
, *curr
;
208 pthread_rwlock_wrlock(&maps
->lock
);
210 curr
= maps__first(maps
);
214 for (next
= map__next(curr
); next
; next
= map__next(curr
)) {
215 curr
->end
= next
->start
;
220 * We still haven't the actual symbols, so guess the
221 * last map final address.
226 pthread_rwlock_unlock(&maps
->lock
);
229 struct symbol
*symbol__new(u64 start
, u64 len
, u8 binding
, const char *name
)
231 size_t namelen
= strlen(name
) + 1;
232 struct symbol
*sym
= calloc(1, (symbol_conf
.priv_size
+
233 sizeof(*sym
) + namelen
));
237 if (symbol_conf
.priv_size
)
238 sym
= ((void *)sym
) + symbol_conf
.priv_size
;
241 sym
->end
= len
? start
+ len
: start
;
242 sym
->binding
= binding
;
243 sym
->namelen
= namelen
- 1;
245 pr_debug4("%s: %s %#" PRIx64
"-%#" PRIx64
"\n",
246 __func__
, name
, start
, sym
->end
);
247 memcpy(sym
->name
, name
, namelen
);
252 void symbol__delete(struct symbol
*sym
)
254 free(((void *)sym
) - symbol_conf
.priv_size
);
257 size_t symbol__fprintf(struct symbol
*sym
, FILE *fp
)
259 return fprintf(fp
, " %" PRIx64
"-%" PRIx64
" %c %s\n",
260 sym
->start
, sym
->end
,
261 sym
->binding
== STB_GLOBAL
? 'g' :
262 sym
->binding
== STB_LOCAL
? 'l' : 'w',
266 size_t symbol__fprintf_symname_offs(const struct symbol
*sym
,
267 const struct addr_location
*al
, FILE *fp
)
269 unsigned long offset
;
272 if (sym
&& sym
->name
) {
273 length
= fprintf(fp
, "%s", sym
->name
);
275 if (al
->addr
< sym
->end
)
276 offset
= al
->addr
- sym
->start
;
278 offset
= al
->addr
- al
->map
->start
- sym
->start
;
279 length
+= fprintf(fp
, "+0x%lx", offset
);
283 return fprintf(fp
, "[unknown]");
286 size_t symbol__fprintf_symname(const struct symbol
*sym
, FILE *fp
)
288 return symbol__fprintf_symname_offs(sym
, NULL
, fp
);
291 void symbols__delete(struct rb_root
*symbols
)
294 struct rb_node
*next
= rb_first(symbols
);
297 pos
= rb_entry(next
, struct symbol
, rb_node
);
298 next
= rb_next(&pos
->rb_node
);
299 rb_erase(&pos
->rb_node
, symbols
);
304 void symbols__insert(struct rb_root
*symbols
, struct symbol
*sym
)
306 struct rb_node
**p
= &symbols
->rb_node
;
307 struct rb_node
*parent
= NULL
;
308 const u64 ip
= sym
->start
;
313 s
= rb_entry(parent
, struct symbol
, rb_node
);
319 rb_link_node(&sym
->rb_node
, parent
, p
);
320 rb_insert_color(&sym
->rb_node
, symbols
);
323 static struct symbol
*symbols__find(struct rb_root
*symbols
, u64 ip
)
330 n
= symbols
->rb_node
;
333 struct symbol
*s
= rb_entry(n
, struct symbol
, rb_node
);
337 else if (ip
>= s
->end
)
346 static struct symbol
*symbols__first(struct rb_root
*symbols
)
348 struct rb_node
*n
= rb_first(symbols
);
351 return rb_entry(n
, struct symbol
, rb_node
);
356 static struct symbol
*symbols__next(struct symbol
*sym
)
358 struct rb_node
*n
= rb_next(&sym
->rb_node
);
361 return rb_entry(n
, struct symbol
, rb_node
);
366 struct symbol_name_rb_node
{
367 struct rb_node rb_node
;
371 static void symbols__insert_by_name(struct rb_root
*symbols
, struct symbol
*sym
)
373 struct rb_node
**p
= &symbols
->rb_node
;
374 struct rb_node
*parent
= NULL
;
375 struct symbol_name_rb_node
*symn
, *s
;
377 symn
= container_of(sym
, struct symbol_name_rb_node
, sym
);
381 s
= rb_entry(parent
, struct symbol_name_rb_node
, rb_node
);
382 if (strcmp(sym
->name
, s
->sym
.name
) < 0)
387 rb_link_node(&symn
->rb_node
, parent
, p
);
388 rb_insert_color(&symn
->rb_node
, symbols
);
391 static void symbols__sort_by_name(struct rb_root
*symbols
,
392 struct rb_root
*source
)
396 for (nd
= rb_first(source
); nd
; nd
= rb_next(nd
)) {
397 struct symbol
*pos
= rb_entry(nd
, struct symbol
, rb_node
);
398 symbols__insert_by_name(symbols
, pos
);
402 static struct symbol
*symbols__find_by_name(struct rb_root
*symbols
,
406 struct symbol_name_rb_node
*s
= NULL
;
411 n
= symbols
->rb_node
;
416 s
= rb_entry(n
, struct symbol_name_rb_node
, rb_node
);
417 cmp
= arch__compare_symbol_names(name
, s
->sym
.name
);
430 /* return first symbol that has same name (if any) */
431 for (n
= rb_prev(n
); n
; n
= rb_prev(n
)) {
432 struct symbol_name_rb_node
*tmp
;
434 tmp
= rb_entry(n
, struct symbol_name_rb_node
, rb_node
);
435 if (arch__compare_symbol_names(tmp
->sym
.name
, s
->sym
.name
))
444 struct symbol
*dso__find_symbol(struct dso
*dso
,
445 enum map_type type
, u64 addr
)
447 return symbols__find(&dso
->symbols
[type
], addr
);
450 struct symbol
*dso__first_symbol(struct dso
*dso
, enum map_type type
)
452 return symbols__first(&dso
->symbols
[type
]);
455 struct symbol
*dso__next_symbol(struct symbol
*sym
)
457 return symbols__next(sym
);
460 struct symbol
*symbol__next_by_name(struct symbol
*sym
)
462 struct symbol_name_rb_node
*s
= container_of(sym
, struct symbol_name_rb_node
, sym
);
463 struct rb_node
*n
= rb_next(&s
->rb_node
);
465 return n
? &rb_entry(n
, struct symbol_name_rb_node
, rb_node
)->sym
: NULL
;
469 * Teturns first symbol that matched with @name.
471 struct symbol
*dso__find_symbol_by_name(struct dso
*dso
, enum map_type type
,
474 return symbols__find_by_name(&dso
->symbol_names
[type
], name
);
477 void dso__sort_by_name(struct dso
*dso
, enum map_type type
)
479 dso__set_sorted_by_name(dso
, type
);
480 return symbols__sort_by_name(&dso
->symbol_names
[type
],
481 &dso
->symbols
[type
]);
484 size_t dso__fprintf_symbols_by_name(struct dso
*dso
,
485 enum map_type type
, FILE *fp
)
489 struct symbol_name_rb_node
*pos
;
491 for (nd
= rb_first(&dso
->symbol_names
[type
]); nd
; nd
= rb_next(nd
)) {
492 pos
= rb_entry(nd
, struct symbol_name_rb_node
, rb_node
);
493 fprintf(fp
, "%s\n", pos
->sym
.name
);
499 int modules__parse(const char *filename
, void *arg
,
500 int (*process_module
)(void *arg
, const char *name
,
508 file
= fopen(filename
, "r");
518 line_len
= getline(&line
, &n
, file
);
531 line
[--line_len
] = '\0'; /* \n */
533 sep
= strrchr(line
, 'x');
537 hex2u64(sep
+ 1, &start
);
539 sep
= strchr(line
, ' ');
545 scnprintf(name
, sizeof(name
), "[%s]", line
);
547 err
= process_module(arg
, name
, start
);
557 struct process_kallsyms_args
{
563 * These are symbols in the kernel image, so make sure that
564 * sym is from a kernel DSO.
566 bool symbol__is_idle(struct symbol
*sym
)
568 const char * const idle_symbols
[] = {
577 "mwait_idle_with_hints",
579 "ppc64_runlatch_off",
580 "pseries_dedicated_idle_sleep",
589 for (i
= 0; idle_symbols
[i
]; i
++) {
590 if (!strcmp(idle_symbols
[i
], sym
->name
))
597 static int map__process_kallsym_symbol(void *arg
, const char *name
,
598 char type
, u64 start
)
601 struct process_kallsyms_args
*a
= arg
;
602 struct rb_root
*root
= &a
->dso
->symbols
[a
->map
->type
];
604 if (!symbol_type__is_a(type
, a
->map
->type
))
608 * module symbols are not sorted so we add all
609 * symbols, setting length to 0, and rely on
610 * symbols__fixup_end() to fix it up.
612 sym
= symbol__new(start
, 0, kallsyms2elf_type(type
), name
);
616 * We will pass the symbols to the filter later, in
617 * map__split_kallsyms, when we have split the maps per module
619 symbols__insert(root
, sym
);
625 * Loads the function entries in /proc/kallsyms into kernel_map->dso,
626 * so that we can in the next step set the symbol ->end address and then
627 * call kernel_maps__split_kallsyms.
629 static int dso__load_all_kallsyms(struct dso
*dso
, const char *filename
,
632 struct process_kallsyms_args args
= { .map
= map
, .dso
= dso
, };
633 return kallsyms__parse(filename
, &args
, map__process_kallsym_symbol
);
636 static int dso__split_kallsyms_for_kcore(struct dso
*dso
, struct map
*map
,
637 symbol_filter_t filter
)
639 struct map_groups
*kmaps
= map__kmaps(map
);
640 struct map
*curr_map
;
642 int count
= 0, moved
= 0;
643 struct rb_root
*root
= &dso
->symbols
[map
->type
];
644 struct rb_node
*next
= rb_first(root
);
652 pos
= rb_entry(next
, struct symbol
, rb_node
);
653 next
= rb_next(&pos
->rb_node
);
655 module
= strchr(pos
->name
, '\t');
659 curr_map
= map_groups__find(kmaps
, map
->type
, pos
->start
);
661 if (!curr_map
|| (filter
&& filter(curr_map
, pos
))) {
662 rb_erase_init(&pos
->rb_node
, root
);
665 pos
->start
-= curr_map
->start
- curr_map
->pgoff
;
667 pos
->end
-= curr_map
->start
- curr_map
->pgoff
;
668 if (curr_map
!= map
) {
669 rb_erase_init(&pos
->rb_node
, root
);
671 &curr_map
->dso
->symbols
[curr_map
->type
],
680 /* Symbols have been adjusted */
681 dso
->adjust_symbols
= 1;
683 return count
+ moved
;
687 * Split the symbols into maps, making sure there are no overlaps, i.e. the
688 * kernel range is broken in several maps, named [kernel].N, as we don't have
689 * the original ELF section names vmlinux have.
691 static int dso__split_kallsyms(struct dso
*dso
, struct map
*map
, u64 delta
,
692 symbol_filter_t filter
)
694 struct map_groups
*kmaps
= map__kmaps(map
);
695 struct machine
*machine
;
696 struct map
*curr_map
= map
;
698 int count
= 0, moved
= 0;
699 struct rb_root
*root
= &dso
->symbols
[map
->type
];
700 struct rb_node
*next
= rb_first(root
);
701 int kernel_range
= 0;
706 machine
= kmaps
->machine
;
711 pos
= rb_entry(next
, struct symbol
, rb_node
);
712 next
= rb_next(&pos
->rb_node
);
714 module
= strchr(pos
->name
, '\t');
716 if (!symbol_conf
.use_modules
)
721 if (strcmp(curr_map
->dso
->short_name
, module
)) {
722 if (curr_map
!= map
&&
723 dso
->kernel
== DSO_TYPE_GUEST_KERNEL
&&
724 machine__is_default_guest(machine
)) {
726 * We assume all symbols of a module are
727 * continuous in * kallsyms, so curr_map
728 * points to a module and all its
729 * symbols are in its kmap. Mark it as
732 dso__set_loaded(curr_map
->dso
,
736 curr_map
= map_groups__find_by_name(kmaps
,
738 if (curr_map
== NULL
) {
739 pr_debug("%s/proc/{kallsyms,modules} "
740 "inconsistency while looking "
741 "for \"%s\" module!\n",
742 machine
->root_dir
, module
);
747 if (curr_map
->dso
->loaded
&&
748 !machine__is_default_guest(machine
))
752 * So that we look just like we get from .ko files,
753 * i.e. not prelinked, relative to map->start.
755 pos
->start
= curr_map
->map_ip(curr_map
, pos
->start
);
756 pos
->end
= curr_map
->map_ip(curr_map
, pos
->end
);
757 } else if (curr_map
!= map
) {
758 char dso_name
[PATH_MAX
];
762 /* Kernel was relocated at boot time */
772 if (dso
->kernel
== DSO_TYPE_GUEST_KERNEL
)
773 snprintf(dso_name
, sizeof(dso_name
),
777 snprintf(dso_name
, sizeof(dso_name
),
781 ndso
= dso__new(dso_name
);
785 ndso
->kernel
= dso
->kernel
;
787 curr_map
= map__new2(pos
->start
, ndso
, map
->type
);
788 if (curr_map
== NULL
) {
793 curr_map
->map_ip
= curr_map
->unmap_ip
= identity__map_ip
;
794 map_groups__insert(kmaps
, curr_map
);
797 /* Kernel was relocated at boot time */
802 if (filter
&& filter(curr_map
, pos
)) {
803 discard_symbol
: rb_erase(&pos
->rb_node
, root
);
806 if (curr_map
!= map
) {
807 rb_erase(&pos
->rb_node
, root
);
808 symbols__insert(&curr_map
->dso
->symbols
[curr_map
->type
], pos
);
815 if (curr_map
!= map
&&
816 dso
->kernel
== DSO_TYPE_GUEST_KERNEL
&&
817 machine__is_default_guest(kmaps
->machine
)) {
818 dso__set_loaded(curr_map
->dso
, curr_map
->type
);
821 return count
+ moved
;
824 bool symbol__restricted_filename(const char *filename
,
825 const char *restricted_filename
)
827 bool restricted
= false;
829 if (symbol_conf
.kptr_restrict
) {
830 char *r
= realpath(filename
, NULL
);
833 restricted
= strcmp(r
, restricted_filename
) == 0;
843 struct rb_node rb_node
;
848 static void add_module(struct module_info
*mi
, struct rb_root
*modules
)
850 struct rb_node
**p
= &modules
->rb_node
;
851 struct rb_node
*parent
= NULL
;
852 struct module_info
*m
;
856 m
= rb_entry(parent
, struct module_info
, rb_node
);
857 if (strcmp(mi
->name
, m
->name
) < 0)
862 rb_link_node(&mi
->rb_node
, parent
, p
);
863 rb_insert_color(&mi
->rb_node
, modules
);
866 static void delete_modules(struct rb_root
*modules
)
868 struct module_info
*mi
;
869 struct rb_node
*next
= rb_first(modules
);
872 mi
= rb_entry(next
, struct module_info
, rb_node
);
873 next
= rb_next(&mi
->rb_node
);
874 rb_erase(&mi
->rb_node
, modules
);
880 static struct module_info
*find_module(const char *name
,
881 struct rb_root
*modules
)
883 struct rb_node
*n
= modules
->rb_node
;
886 struct module_info
*m
;
889 m
= rb_entry(n
, struct module_info
, rb_node
);
890 cmp
= strcmp(name
, m
->name
);
902 static int __read_proc_modules(void *arg
, const char *name
, u64 start
)
904 struct rb_root
*modules
= arg
;
905 struct module_info
*mi
;
907 mi
= zalloc(sizeof(struct module_info
));
911 mi
->name
= strdup(name
);
919 add_module(mi
, modules
);
924 static int read_proc_modules(const char *filename
, struct rb_root
*modules
)
926 if (symbol__restricted_filename(filename
, "/proc/modules"))
929 if (modules__parse(filename
, modules
, __read_proc_modules
)) {
930 delete_modules(modules
);
937 int compare_proc_modules(const char *from
, const char *to
)
939 struct rb_root from_modules
= RB_ROOT
;
940 struct rb_root to_modules
= RB_ROOT
;
941 struct rb_node
*from_node
, *to_node
;
942 struct module_info
*from_m
, *to_m
;
945 if (read_proc_modules(from
, &from_modules
))
948 if (read_proc_modules(to
, &to_modules
))
949 goto out_delete_from
;
951 from_node
= rb_first(&from_modules
);
952 to_node
= rb_first(&to_modules
);
957 from_m
= rb_entry(from_node
, struct module_info
, rb_node
);
958 to_m
= rb_entry(to_node
, struct module_info
, rb_node
);
960 if (from_m
->start
!= to_m
->start
||
961 strcmp(from_m
->name
, to_m
->name
))
964 from_node
= rb_next(from_node
);
965 to_node
= rb_next(to_node
);
968 if (!from_node
&& !to_node
)
971 delete_modules(&to_modules
);
973 delete_modules(&from_modules
);
978 static int do_validate_kcore_modules(const char *filename
, struct map
*map
,
979 struct map_groups
*kmaps
)
981 struct rb_root modules
= RB_ROOT
;
985 err
= read_proc_modules(filename
, &modules
);
989 old_map
= map_groups__first(kmaps
, map
->type
);
991 struct map
*next
= map_groups__next(old_map
);
992 struct module_info
*mi
;
994 if (old_map
== map
|| old_map
->start
== map
->start
) {
1000 /* Module must be in memory at the same address */
1001 mi
= find_module(old_map
->dso
->short_name
, &modules
);
1002 if (!mi
|| mi
->start
!= old_map
->start
) {
1010 delete_modules(&modules
);
1015 * If kallsyms is referenced by name then we look for filename in the same
1018 static bool filename_from_kallsyms_filename(char *filename
,
1019 const char *base_name
,
1020 const char *kallsyms_filename
)
1024 strcpy(filename
, kallsyms_filename
);
1025 name
= strrchr(filename
, '/');
1031 if (!strcmp(name
, "kallsyms")) {
1032 strcpy(name
, base_name
);
1039 static int validate_kcore_modules(const char *kallsyms_filename
,
1042 struct map_groups
*kmaps
= map__kmaps(map
);
1043 char modules_filename
[PATH_MAX
];
1048 if (!filename_from_kallsyms_filename(modules_filename
, "modules",
1052 if (do_validate_kcore_modules(modules_filename
, map
, kmaps
))
1058 static int validate_kcore_addresses(const char *kallsyms_filename
,
1061 struct kmap
*kmap
= map__kmap(map
);
1066 if (kmap
->ref_reloc_sym
&& kmap
->ref_reloc_sym
->name
) {
1069 start
= kallsyms__get_function_start(kallsyms_filename
,
1070 kmap
->ref_reloc_sym
->name
);
1071 if (start
!= kmap
->ref_reloc_sym
->addr
)
1075 return validate_kcore_modules(kallsyms_filename
, map
);
1078 struct kcore_mapfn_data
{
1081 struct list_head maps
;
1084 static int kcore_mapfn(u64 start
, u64 len
, u64 pgoff
, void *data
)
1086 struct kcore_mapfn_data
*md
= data
;
1089 map
= map__new2(start
, md
->dso
, md
->type
);
1093 map
->end
= map
->start
+ len
;
1096 list_add(&map
->node
, &md
->maps
);
1101 static int dso__load_kcore(struct dso
*dso
, struct map
*map
,
1102 const char *kallsyms_filename
)
1104 struct map_groups
*kmaps
= map__kmaps(map
);
1105 struct machine
*machine
;
1106 struct kcore_mapfn_data md
;
1107 struct map
*old_map
, *new_map
, *replacement_map
= NULL
;
1110 char kcore_filename
[PATH_MAX
];
1116 machine
= kmaps
->machine
;
1118 /* This function requires that the map is the kernel map */
1119 if (map
!= machine
->vmlinux_maps
[map
->type
])
1122 if (!filename_from_kallsyms_filename(kcore_filename
, "kcore",
1126 /* Modules and kernel must be present at their original addresses */
1127 if (validate_kcore_addresses(kallsyms_filename
, map
))
1131 md
.type
= map
->type
;
1132 INIT_LIST_HEAD(&md
.maps
);
1134 fd
= open(kcore_filename
, O_RDONLY
);
1136 pr_err("%s requires CAP_SYS_RAWIO capability to access.\n",
1141 /* Read new maps into temporary lists */
1142 err
= file__read_maps(fd
, md
.type
== MAP__FUNCTION
, kcore_mapfn
, &md
,
1146 dso
->is_64_bit
= is_64_bit
;
1148 if (list_empty(&md
.maps
)) {
1153 /* Remove old maps */
1154 old_map
= map_groups__first(kmaps
, map
->type
);
1156 struct map
*next
= map_groups__next(old_map
);
1159 map_groups__remove(kmaps
, old_map
);
1163 /* Find the kernel map using the first symbol */
1164 sym
= dso__first_symbol(dso
, map
->type
);
1165 list_for_each_entry(new_map
, &md
.maps
, node
) {
1166 if (sym
&& sym
->start
>= new_map
->start
&&
1167 sym
->start
< new_map
->end
) {
1168 replacement_map
= new_map
;
1173 if (!replacement_map
)
1174 replacement_map
= list_entry(md
.maps
.next
, struct map
, node
);
1177 while (!list_empty(&md
.maps
)) {
1178 new_map
= list_entry(md
.maps
.next
, struct map
, node
);
1179 list_del_init(&new_map
->node
);
1180 if (new_map
== replacement_map
) {
1181 map
->start
= new_map
->start
;
1182 map
->end
= new_map
->end
;
1183 map
->pgoff
= new_map
->pgoff
;
1184 map
->map_ip
= new_map
->map_ip
;
1185 map
->unmap_ip
= new_map
->unmap_ip
;
1186 /* Ensure maps are correctly ordered */
1188 map_groups__remove(kmaps
, map
);
1189 map_groups__insert(kmaps
, map
);
1192 map_groups__insert(kmaps
, new_map
);
1199 * Set the data type and long name so that kcore can be read via
1200 * dso__data_read_addr().
1202 if (dso
->kernel
== DSO_TYPE_GUEST_KERNEL
)
1203 dso
->binary_type
= DSO_BINARY_TYPE__GUEST_KCORE
;
1205 dso
->binary_type
= DSO_BINARY_TYPE__KCORE
;
1206 dso__set_long_name(dso
, strdup(kcore_filename
), true);
1210 if (map
->type
== MAP__FUNCTION
)
1211 pr_debug("Using %s for kernel object code\n", kcore_filename
);
1213 pr_debug("Using %s for kernel data\n", kcore_filename
);
1218 while (!list_empty(&md
.maps
)) {
1219 map
= list_entry(md
.maps
.next
, struct map
, node
);
1220 list_del_init(&map
->node
);
1228 * If the kernel is relocated at boot time, kallsyms won't match. Compute the
1229 * delta based on the relocation reference symbol.
1231 static int kallsyms__delta(struct map
*map
, const char *filename
, u64
*delta
)
1233 struct kmap
*kmap
= map__kmap(map
);
1239 if (!kmap
->ref_reloc_sym
|| !kmap
->ref_reloc_sym
->name
)
1242 addr
= kallsyms__get_function_start(filename
,
1243 kmap
->ref_reloc_sym
->name
);
1247 *delta
= addr
- kmap
->ref_reloc_sym
->addr
;
1251 int dso__load_kallsyms(struct dso
*dso
, const char *filename
,
1252 struct map
*map
, symbol_filter_t filter
)
1256 if (symbol__restricted_filename(filename
, "/proc/kallsyms"))
1259 if (dso__load_all_kallsyms(dso
, filename
, map
) < 0)
1262 if (kallsyms__delta(map
, filename
, &delta
))
1265 symbols__fixup_duplicate(&dso
->symbols
[map
->type
]);
1266 symbols__fixup_end(&dso
->symbols
[map
->type
]);
1268 if (dso
->kernel
== DSO_TYPE_GUEST_KERNEL
)
1269 dso
->symtab_type
= DSO_BINARY_TYPE__GUEST_KALLSYMS
;
1271 dso
->symtab_type
= DSO_BINARY_TYPE__KALLSYMS
;
1273 if (!dso__load_kcore(dso
, map
, filename
))
1274 return dso__split_kallsyms_for_kcore(dso
, map
, filter
);
1276 return dso__split_kallsyms(dso
, map
, delta
, filter
);
1279 static int dso__load_perf_map(struct dso
*dso
, struct map
*map
,
1280 symbol_filter_t filter
)
1287 file
= fopen(dso
->long_name
, "r");
1291 while (!feof(file
)) {
1296 line_len
= getline(&line
, &n
, file
);
1303 line
[--line_len
] = '\0'; /* \n */
1305 len
= hex2u64(line
, &start
);
1308 if (len
+ 2 >= line_len
)
1311 len
+= hex2u64(line
+ len
, &size
);
1314 if (len
+ 2 >= line_len
)
1317 sym
= symbol__new(start
, size
, STB_GLOBAL
, line
+ len
);
1320 goto out_delete_line
;
1322 if (filter
&& filter(map
, sym
))
1323 symbol__delete(sym
);
1325 symbols__insert(&dso
->symbols
[map
->type
], sym
);
1341 static bool dso__is_compatible_symtab_type(struct dso
*dso
, bool kmod
,
1342 enum dso_binary_type type
)
1345 case DSO_BINARY_TYPE__JAVA_JIT
:
1346 case DSO_BINARY_TYPE__DEBUGLINK
:
1347 case DSO_BINARY_TYPE__SYSTEM_PATH_DSO
:
1348 case DSO_BINARY_TYPE__FEDORA_DEBUGINFO
:
1349 case DSO_BINARY_TYPE__UBUNTU_DEBUGINFO
:
1350 case DSO_BINARY_TYPE__BUILDID_DEBUGINFO
:
1351 case DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO
:
1352 return !kmod
&& dso
->kernel
== DSO_TYPE_USER
;
1354 case DSO_BINARY_TYPE__KALLSYMS
:
1355 case DSO_BINARY_TYPE__VMLINUX
:
1356 case DSO_BINARY_TYPE__KCORE
:
1357 return dso
->kernel
== DSO_TYPE_KERNEL
;
1359 case DSO_BINARY_TYPE__GUEST_KALLSYMS
:
1360 case DSO_BINARY_TYPE__GUEST_VMLINUX
:
1361 case DSO_BINARY_TYPE__GUEST_KCORE
:
1362 return dso
->kernel
== DSO_TYPE_GUEST_KERNEL
;
1364 case DSO_BINARY_TYPE__GUEST_KMODULE
:
1365 case DSO_BINARY_TYPE__GUEST_KMODULE_COMP
:
1366 case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE
:
1367 case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP
:
1369 * kernel modules know their symtab type - it's set when
1370 * creating a module dso in machine__findnew_module_map().
1372 return kmod
&& dso
->symtab_type
== type
;
1374 case DSO_BINARY_TYPE__BUILD_ID_CACHE
:
1377 case DSO_BINARY_TYPE__NOT_FOUND
:
1383 int dso__load(struct dso
*dso
, struct map
*map
, symbol_filter_t filter
)
1388 struct machine
*machine
;
1389 char *root_dir
= (char *) "";
1391 struct symsrc ss_
[2];
1392 struct symsrc
*syms_ss
= NULL
, *runtime_ss
= NULL
;
1395 pthread_mutex_lock(&dso
->lock
);
1397 /* check again under the dso->lock */
1398 if (dso__loaded(dso
, map
->type
)) {
1404 if (dso
->kernel
== DSO_TYPE_KERNEL
)
1405 ret
= dso__load_kernel_sym(dso
, map
, filter
);
1406 else if (dso
->kernel
== DSO_TYPE_GUEST_KERNEL
)
1407 ret
= dso__load_guest_kernel_sym(dso
, map
, filter
);
1412 if (map
->groups
&& map
->groups
->machine
)
1413 machine
= map
->groups
->machine
;
1417 dso
->adjust_symbols
= 0;
1419 if (strncmp(dso
->name
, "/tmp/perf-", 10) == 0) {
1422 if (lstat(dso
->name
, &st
) < 0)
1425 if (st
.st_uid
&& (st
.st_uid
!= geteuid())) {
1426 pr_warning("File %s not owned by current user or root, "
1427 "ignoring it.\n", dso
->name
);
1431 ret
= dso__load_perf_map(dso
, map
, filter
);
1432 dso
->symtab_type
= ret
> 0 ? DSO_BINARY_TYPE__JAVA_JIT
:
1433 DSO_BINARY_TYPE__NOT_FOUND
;
1438 root_dir
= machine
->root_dir
;
1440 name
= malloc(PATH_MAX
);
1444 kmod
= dso
->symtab_type
== DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE
||
1445 dso
->symtab_type
== DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP
||
1446 dso
->symtab_type
== DSO_BINARY_TYPE__GUEST_KMODULE
||
1447 dso
->symtab_type
== DSO_BINARY_TYPE__GUEST_KMODULE_COMP
;
1450 * Iterate over candidate debug images.
1451 * Keep track of "interesting" ones (those which have a symtab, dynsym,
1452 * and/or opd section) for processing.
1454 for (i
= 0; i
< DSO_BINARY_TYPE__SYMTAB_CNT
; i
++) {
1455 struct symsrc
*ss
= &ss_
[ss_pos
];
1456 bool next_slot
= false;
1458 enum dso_binary_type symtab_type
= binary_type_symtab
[i
];
1460 if (!dso__is_compatible_symtab_type(dso
, kmod
, symtab_type
))
1463 if (dso__read_binary_type_filename(dso
, symtab_type
,
1464 root_dir
, name
, PATH_MAX
))
1467 /* Name is now the name of the next image to try */
1468 if (symsrc__init(ss
, dso
, name
, symtab_type
) < 0)
1471 if (!syms_ss
&& symsrc__has_symtab(ss
)) {
1474 if (!dso
->symsrc_filename
)
1475 dso
->symsrc_filename
= strdup(name
);
1478 if (!runtime_ss
&& symsrc__possibly_runtime(ss
)) {
1486 if (syms_ss
&& runtime_ss
)
1489 symsrc__destroy(ss
);
1494 if (!runtime_ss
&& !syms_ss
)
1497 if (runtime_ss
&& !syms_ss
) {
1498 syms_ss
= runtime_ss
;
1501 /* We'll have to hope for the best */
1502 if (!runtime_ss
&& syms_ss
)
1503 runtime_ss
= syms_ss
;
1506 ret
= dso__load_sym(dso
, map
, syms_ss
, runtime_ss
, filter
, kmod
);
1513 nr_plt
= dso__synthesize_plt_symbols(dso
, runtime_ss
, map
, filter
);
1518 for (; ss_pos
> 0; ss_pos
--)
1519 symsrc__destroy(&ss_
[ss_pos
- 1]);
1522 if (ret
< 0 && strstr(dso
->name
, " (deleted)") != NULL
)
1525 dso__set_loaded(dso
, map
->type
);
1526 pthread_mutex_unlock(&dso
->lock
);
1531 struct map
*map_groups__find_by_name(struct map_groups
*mg
,
1532 enum map_type type
, const char *name
)
1534 struct maps
*maps
= &mg
->maps
[type
];
1537 pthread_rwlock_rdlock(&maps
->lock
);
1539 for (map
= maps__first(maps
); map
; map
= map__next(map
)) {
1540 if (map
->dso
&& strcmp(map
->dso
->short_name
, name
) == 0)
1547 pthread_rwlock_unlock(&maps
->lock
);
1551 int dso__load_vmlinux(struct dso
*dso
, struct map
*map
,
1552 const char *vmlinux
, bool vmlinux_allocated
,
1553 symbol_filter_t filter
)
1557 char symfs_vmlinux
[PATH_MAX
];
1558 enum dso_binary_type symtab_type
;
1560 if (vmlinux
[0] == '/')
1561 snprintf(symfs_vmlinux
, sizeof(symfs_vmlinux
), "%s", vmlinux
);
1563 symbol__join_symfs(symfs_vmlinux
, vmlinux
);
1565 if (dso
->kernel
== DSO_TYPE_GUEST_KERNEL
)
1566 symtab_type
= DSO_BINARY_TYPE__GUEST_VMLINUX
;
1568 symtab_type
= DSO_BINARY_TYPE__VMLINUX
;
1570 if (symsrc__init(&ss
, dso
, symfs_vmlinux
, symtab_type
))
1573 err
= dso__load_sym(dso
, map
, &ss
, &ss
, filter
, 0);
1574 symsrc__destroy(&ss
);
1577 if (dso
->kernel
== DSO_TYPE_GUEST_KERNEL
)
1578 dso
->binary_type
= DSO_BINARY_TYPE__GUEST_VMLINUX
;
1580 dso
->binary_type
= DSO_BINARY_TYPE__VMLINUX
;
1581 dso__set_long_name(dso
, vmlinux
, vmlinux_allocated
);
1582 dso__set_loaded(dso
, map
->type
);
1583 pr_debug("Using %s for symbols\n", symfs_vmlinux
);
1589 int dso__load_vmlinux_path(struct dso
*dso
, struct map
*map
,
1590 symbol_filter_t filter
)
1593 char *filename
= NULL
;
1595 if (!symbol_conf
.ignore_vmlinux_buildid
)
1596 filename
= dso__build_id_filename(dso
, NULL
, 0);
1597 if (filename
!= NULL
) {
1598 err
= dso__load_vmlinux(dso
, map
, filename
, true, filter
);
1604 pr_debug("Looking at the vmlinux_path (%d entries long)\n",
1605 vmlinux_path__nr_entries
+ 1);
1607 for (i
= 0; i
< vmlinux_path__nr_entries
; ++i
) {
1608 err
= dso__load_vmlinux(dso
, map
, vmlinux_path
[i
], false, filter
);
1616 static int find_matching_kcore(struct map
*map
, char *dir
, size_t dir_sz
)
1618 char kallsyms_filename
[PATH_MAX
];
1619 struct dirent
*dent
;
1631 if (dent
->d_type
!= DT_DIR
)
1633 scnprintf(kallsyms_filename
, sizeof(kallsyms_filename
),
1634 "%s/%s/kallsyms", dir
, dent
->d_name
);
1635 if (!validate_kcore_addresses(kallsyms_filename
, map
)) {
1636 strlcpy(dir
, kallsyms_filename
, dir_sz
);
1647 static char *dso__find_kallsyms(struct dso
*dso
, struct map
*map
)
1649 u8 host_build_id
[BUILD_ID_SIZE
];
1650 char sbuild_id
[BUILD_ID_SIZE
* 2 + 1];
1651 bool is_host
= false;
1652 char path
[PATH_MAX
];
1654 if (!dso
->has_build_id
) {
1656 * Last resort, if we don't have a build-id and couldn't find
1657 * any vmlinux file, try the running kernel kallsyms table.
1662 if (sysfs__read_build_id("/sys/kernel/notes", host_build_id
,
1663 sizeof(host_build_id
)) == 0)
1664 is_host
= dso__build_id_equal(dso
, host_build_id
);
1666 build_id__sprintf(dso
->build_id
, sizeof(dso
->build_id
), sbuild_id
);
1668 scnprintf(path
, sizeof(path
), "%s/[kernel.kcore]/%s", buildid_dir
,
1671 /* Use /proc/kallsyms if possible */
1676 /* If no cached kcore go with /proc/kallsyms */
1683 * Do not check the build-id cache, until we know we cannot use
1686 fd
= open("/proc/kcore", O_RDONLY
);
1689 /* If module maps match go with /proc/kallsyms */
1690 if (!validate_kcore_addresses("/proc/kallsyms", map
))
1694 /* Find kallsyms in build-id cache with kcore */
1695 if (!find_matching_kcore(map
, path
, sizeof(path
)))
1696 return strdup(path
);
1701 /* Find kallsyms in build-id cache with kcore */
1702 if (!find_matching_kcore(map
, path
, sizeof(path
)))
1703 return strdup(path
);
1705 scnprintf(path
, sizeof(path
), "%s/[kernel.kallsyms]/%s",
1706 buildid_dir
, sbuild_id
);
1708 if (access(path
, F_OK
)) {
1709 pr_err("No kallsyms or vmlinux with build-id %s was found\n",
1714 return strdup(path
);
1717 return strdup("/proc/kallsyms");
1720 static int dso__load_kernel_sym(struct dso
*dso
, struct map
*map
,
1721 symbol_filter_t filter
)
1724 const char *kallsyms_filename
= NULL
;
1725 char *kallsyms_allocated_filename
= NULL
;
1727 * Step 1: if the user specified a kallsyms or vmlinux filename, use
1728 * it and only it, reporting errors to the user if it cannot be used.
1730 * For instance, try to analyse an ARM perf.data file _without_ a
1731 * build-id, or if the user specifies the wrong path to the right
1732 * vmlinux file, obviously we can't fallback to another vmlinux (a
1733 * x86_86 one, on the machine where analysis is being performed, say),
1734 * or worse, /proc/kallsyms.
1736 * If the specified file _has_ a build-id and there is a build-id
1737 * section in the perf.data file, we will still do the expected
1738 * validation in dso__load_vmlinux and will bail out if they don't
1741 if (symbol_conf
.kallsyms_name
!= NULL
) {
1742 kallsyms_filename
= symbol_conf
.kallsyms_name
;
1746 if (!symbol_conf
.ignore_vmlinux
&& symbol_conf
.vmlinux_name
!= NULL
) {
1747 return dso__load_vmlinux(dso
, map
, symbol_conf
.vmlinux_name
,
1751 if (!symbol_conf
.ignore_vmlinux
&& vmlinux_path
!= NULL
) {
1752 err
= dso__load_vmlinux_path(dso
, map
, filter
);
1757 /* do not try local files if a symfs was given */
1758 if (symbol_conf
.symfs
[0] != 0)
1761 kallsyms_allocated_filename
= dso__find_kallsyms(dso
, map
);
1762 if (!kallsyms_allocated_filename
)
1765 kallsyms_filename
= kallsyms_allocated_filename
;
1768 err
= dso__load_kallsyms(dso
, kallsyms_filename
, map
, filter
);
1770 pr_debug("Using %s for symbols\n", kallsyms_filename
);
1771 free(kallsyms_allocated_filename
);
1773 if (err
> 0 && !dso__is_kcore(dso
)) {
1774 dso
->binary_type
= DSO_BINARY_TYPE__KALLSYMS
;
1775 dso__set_long_name(dso
, "[kernel.kallsyms]", false);
1776 map__fixup_start(map
);
1777 map__fixup_end(map
);
1783 static int dso__load_guest_kernel_sym(struct dso
*dso
, struct map
*map
,
1784 symbol_filter_t filter
)
1787 const char *kallsyms_filename
= NULL
;
1788 struct machine
*machine
;
1789 char path
[PATH_MAX
];
1792 pr_debug("Guest kernel map hasn't the point to groups\n");
1795 machine
= map
->groups
->machine
;
1797 if (machine__is_default_guest(machine
)) {
1799 * if the user specified a vmlinux filename, use it and only
1800 * it, reporting errors to the user if it cannot be used.
1801 * Or use file guest_kallsyms inputted by user on commandline
1803 if (symbol_conf
.default_guest_vmlinux_name
!= NULL
) {
1804 err
= dso__load_vmlinux(dso
, map
,
1805 symbol_conf
.default_guest_vmlinux_name
,
1810 kallsyms_filename
= symbol_conf
.default_guest_kallsyms
;
1811 if (!kallsyms_filename
)
1814 sprintf(path
, "%s/proc/kallsyms", machine
->root_dir
);
1815 kallsyms_filename
= path
;
1818 err
= dso__load_kallsyms(dso
, kallsyms_filename
, map
, filter
);
1820 pr_debug("Using %s for symbols\n", kallsyms_filename
);
1821 if (err
> 0 && !dso__is_kcore(dso
)) {
1822 dso
->binary_type
= DSO_BINARY_TYPE__GUEST_KALLSYMS
;
1823 machine__mmap_name(machine
, path
, sizeof(path
));
1824 dso__set_long_name(dso
, strdup(path
), true);
1825 map__fixup_start(map
);
1826 map__fixup_end(map
);
1832 static void vmlinux_path__exit(void)
1834 while (--vmlinux_path__nr_entries
>= 0)
1835 zfree(&vmlinux_path
[vmlinux_path__nr_entries
]);
1836 vmlinux_path__nr_entries
= 0;
1838 zfree(&vmlinux_path
);
1841 static int vmlinux_path__init(struct perf_session_env
*env
)
1845 char *kernel_version
;
1847 vmlinux_path
= malloc(sizeof(char *) * 6);
1848 if (vmlinux_path
== NULL
)
1851 vmlinux_path
[vmlinux_path__nr_entries
] = strdup("vmlinux");
1852 if (vmlinux_path
[vmlinux_path__nr_entries
] == NULL
)
1854 ++vmlinux_path__nr_entries
;
1855 vmlinux_path
[vmlinux_path__nr_entries
] = strdup("/boot/vmlinux");
1856 if (vmlinux_path
[vmlinux_path__nr_entries
] == NULL
)
1858 ++vmlinux_path__nr_entries
;
1860 /* only try kernel version if no symfs was given */
1861 if (symbol_conf
.symfs
[0] != 0)
1865 kernel_version
= env
->os_release
;
1867 if (uname(&uts
) < 0)
1870 kernel_version
= uts
.release
;
1873 snprintf(bf
, sizeof(bf
), "/boot/vmlinux-%s", kernel_version
);
1874 vmlinux_path
[vmlinux_path__nr_entries
] = strdup(bf
);
1875 if (vmlinux_path
[vmlinux_path__nr_entries
] == NULL
)
1877 ++vmlinux_path__nr_entries
;
1878 snprintf(bf
, sizeof(bf
), "/usr/lib/debug/boot/vmlinux-%s",
1880 vmlinux_path
[vmlinux_path__nr_entries
] = strdup(bf
);
1881 if (vmlinux_path
[vmlinux_path__nr_entries
] == NULL
)
1883 ++vmlinux_path__nr_entries
;
1884 snprintf(bf
, sizeof(bf
), "/lib/modules/%s/build/vmlinux", kernel_version
);
1885 vmlinux_path
[vmlinux_path__nr_entries
] = strdup(bf
);
1886 if (vmlinux_path
[vmlinux_path__nr_entries
] == NULL
)
1888 ++vmlinux_path__nr_entries
;
1889 snprintf(bf
, sizeof(bf
), "/usr/lib/debug/lib/modules/%s/vmlinux",
1891 vmlinux_path
[vmlinux_path__nr_entries
] = strdup(bf
);
1892 if (vmlinux_path
[vmlinux_path__nr_entries
] == NULL
)
1894 ++vmlinux_path__nr_entries
;
1899 vmlinux_path__exit();
1903 int setup_list(struct strlist
**list
, const char *list_str
,
1904 const char *list_name
)
1906 if (list_str
== NULL
)
1909 *list
= strlist__new(true, list_str
);
1911 pr_err("problems parsing %s list\n", list_name
);
1917 int setup_intlist(struct intlist
**list
, const char *list_str
,
1918 const char *list_name
)
1920 if (list_str
== NULL
)
1923 *list
= intlist__new(list_str
);
1925 pr_err("problems parsing %s list\n", list_name
);
1931 static bool symbol__read_kptr_restrict(void)
1935 if (geteuid() != 0) {
1936 FILE *fp
= fopen("/proc/sys/kernel/kptr_restrict", "r");
1940 if (fgets(line
, sizeof(line
), fp
) != NULL
)
1941 value
= atoi(line
) != 0;
1950 int symbol__init(struct perf_session_env
*env
)
1954 if (symbol_conf
.initialized
)
1957 symbol_conf
.priv_size
= PERF_ALIGN(symbol_conf
.priv_size
, sizeof(u64
));
1961 if (symbol_conf
.sort_by_name
)
1962 symbol_conf
.priv_size
+= (sizeof(struct symbol_name_rb_node
) -
1963 sizeof(struct symbol
));
1965 if (symbol_conf
.try_vmlinux_path
&& vmlinux_path__init(env
) < 0)
1968 if (symbol_conf
.field_sep
&& *symbol_conf
.field_sep
== '.') {
1969 pr_err("'.' is the only non valid --field-separator argument\n");
1973 if (setup_list(&symbol_conf
.dso_list
,
1974 symbol_conf
.dso_list_str
, "dso") < 0)
1977 if (setup_list(&symbol_conf
.comm_list
,
1978 symbol_conf
.comm_list_str
, "comm") < 0)
1979 goto out_free_dso_list
;
1981 if (setup_intlist(&symbol_conf
.pid_list
,
1982 symbol_conf
.pid_list_str
, "pid") < 0)
1983 goto out_free_comm_list
;
1985 if (setup_intlist(&symbol_conf
.tid_list
,
1986 symbol_conf
.tid_list_str
, "tid") < 0)
1987 goto out_free_pid_list
;
1989 if (setup_list(&symbol_conf
.sym_list
,
1990 symbol_conf
.sym_list_str
, "symbol") < 0)
1991 goto out_free_tid_list
;
1994 * A path to symbols of "/" is identical to ""
1995 * reset here for simplicity.
1997 symfs
= realpath(symbol_conf
.symfs
, NULL
);
1999 symfs
= symbol_conf
.symfs
;
2000 if (strcmp(symfs
, "/") == 0)
2001 symbol_conf
.symfs
= "";
2002 if (symfs
!= symbol_conf
.symfs
)
2003 free((void *)symfs
);
2005 symbol_conf
.kptr_restrict
= symbol__read_kptr_restrict();
2007 symbol_conf
.initialized
= true;
2011 intlist__delete(symbol_conf
.tid_list
);
2013 intlist__delete(symbol_conf
.pid_list
);
2015 strlist__delete(symbol_conf
.comm_list
);
2017 strlist__delete(symbol_conf
.dso_list
);
2021 void symbol__exit(void)
2023 if (!symbol_conf
.initialized
)
2025 strlist__delete(symbol_conf
.sym_list
);
2026 strlist__delete(symbol_conf
.dso_list
);
2027 strlist__delete(symbol_conf
.comm_list
);
2028 intlist__delete(symbol_conf
.tid_list
);
2029 intlist__delete(symbol_conf
.pid_list
);
2030 vmlinux_path__exit();
2031 symbol_conf
.sym_list
= symbol_conf
.dso_list
= symbol_conf
.comm_list
= NULL
;
2032 symbol_conf
.initialized
= false;