Commit | Line | Data |
---|---|---|
a2928c42 ACM |
1 | #include "util.h" |
2 | #include "../perf.h" | |
a0055ae2 | 3 | #include "string.h" |
a2928c42 | 4 | #include "symbol.h" |
439d473b | 5 | #include "thread.h" |
a2928c42 | 6 | |
8f28827a FW |
7 | #include "debug.h" |
8 | ||
b32d133a | 9 | #include <asm/bug.h> |
a2928c42 ACM |
10 | #include <libelf.h> |
11 | #include <gelf.h> | |
12 | #include <elf.h> | |
f1617b40 | 13 | #include <limits.h> |
439d473b | 14 | #include <sys/utsname.h> |
2cdbc46d | 15 | |
c12e15e7 ACM |
16 | #ifndef NT_GNU_BUILD_ID |
17 | #define NT_GNU_BUILD_ID 3 | |
18 | #endif | |
19 | ||
94cb9e38 ACM |
20 | enum dso_origin { |
21 | DSO__ORIG_KERNEL = 0, | |
22 | DSO__ORIG_JAVA_JIT, | |
23 | DSO__ORIG_FEDORA, | |
24 | DSO__ORIG_UBUNTU, | |
25 | DSO__ORIG_BUILDID, | |
26 | DSO__ORIG_DSO, | |
439d473b | 27 | DSO__ORIG_KMODULE, |
94cb9e38 ACM |
28 | DSO__ORIG_NOT_FOUND, |
29 | }; | |
30 | ||
439d473b ACM |
31 | static void dsos__add(struct dso *dso); |
32 | static struct dso *dsos__find(const char *name); | |
2e538c4a ACM |
33 | static struct map *map__new2(u64 start, struct dso *dso); |
34 | static void kernel_maps__insert(struct map *map); | |
c338aee8 ACM |
35 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
36 | symbol_filter_t filter); | |
00a192b3 | 37 | unsigned int symbol__priv_size; |
cc612d81 ACM |
38 | static int vmlinux_path__nr_entries; |
39 | static char **vmlinux_path; | |
439d473b | 40 | |
b32d133a ACM |
41 | static struct symbol_conf symbol_conf__defaults = { |
42 | .use_modules = true, | |
43 | .try_vmlinux_path = true, | |
44 | }; | |
45 | ||
af427bf5 ACM |
46 | static struct rb_root kernel_maps; |
47 | ||
2e538c4a | 48 | static void dso__fixup_sym_end(struct dso *self) |
af427bf5 ACM |
49 | { |
50 | struct rb_node *nd, *prevnd = rb_first(&self->syms); | |
2e538c4a | 51 | struct symbol *curr, *prev; |
af427bf5 ACM |
52 | |
53 | if (prevnd == NULL) | |
54 | return; | |
55 | ||
2e538c4a ACM |
56 | curr = rb_entry(prevnd, struct symbol, rb_node); |
57 | ||
af427bf5 | 58 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { |
2e538c4a ACM |
59 | prev = curr; |
60 | curr = rb_entry(nd, struct symbol, rb_node); | |
af427bf5 ACM |
61 | |
62 | if (prev->end == prev->start) | |
63 | prev->end = curr->start - 1; | |
af427bf5 | 64 | } |
2e538c4a ACM |
65 | |
66 | /* Last entry */ | |
67 | if (curr->end == curr->start) | |
68 | curr->end = roundup(curr->start, 4096); | |
af427bf5 ACM |
69 | } |
70 | ||
2e538c4a | 71 | static void kernel_maps__fixup_end(void) |
af427bf5 ACM |
72 | { |
73 | struct map *prev, *curr; | |
74 | struct rb_node *nd, *prevnd = rb_first(&kernel_maps); | |
75 | ||
76 | if (prevnd == NULL) | |
77 | return; | |
78 | ||
79 | curr = rb_entry(prevnd, struct map, rb_node); | |
af427bf5 ACM |
80 | |
81 | for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) { | |
82 | prev = curr; | |
83 | curr = rb_entry(nd, struct map, rb_node); | |
84 | prev->end = curr->start - 1; | |
2e538c4a | 85 | } |
90c83218 ACM |
86 | |
87 | /* | |
88 | * We still haven't the actual symbols, so guess the | |
89 | * last map final address. | |
90 | */ | |
91 | curr->end = ~0UL; | |
af427bf5 ACM |
92 | } |
93 | ||
00a192b3 | 94 | static struct symbol *symbol__new(u64 start, u64 len, const char *name) |
a2928c42 | 95 | { |
0085c954 | 96 | size_t namelen = strlen(name) + 1; |
36479484 ACM |
97 | struct symbol *self = zalloc(symbol__priv_size + |
98 | sizeof(*self) + namelen); | |
99 | if (self == NULL) | |
0b73da3f IM |
100 | return NULL; |
101 | ||
36479484 | 102 | if (symbol__priv_size) |
00a192b3 | 103 | self = ((void *)self) + symbol__priv_size; |
36479484 | 104 | |
0b73da3f | 105 | self->start = start; |
6cfcc53e | 106 | self->end = len ? start + len - 1 : start; |
e4204992 | 107 | |
6beba7ad | 108 | pr_debug3("%s: %s %#Lx-%#Lx\n", __func__, name, start, self->end); |
e4204992 | 109 | |
0b73da3f | 110 | memcpy(self->name, name, namelen); |
a2928c42 ACM |
111 | |
112 | return self; | |
113 | } | |
114 | ||
00a192b3 | 115 | static void symbol__delete(struct symbol *self) |
a2928c42 | 116 | { |
00a192b3 | 117 | free(((void *)self) - symbol__priv_size); |
a2928c42 ACM |
118 | } |
119 | ||
120 | static size_t symbol__fprintf(struct symbol *self, FILE *fp) | |
121 | { | |
439d473b | 122 | return fprintf(fp, " %llx-%llx %s\n", |
a2928c42 ACM |
123 | self->start, self->end, self->name); |
124 | } | |
125 | ||
cfc10d3b ACM |
126 | static void dso__set_long_name(struct dso *self, char *name) |
127 | { | |
ef6ae724 ACM |
128 | if (name == NULL) |
129 | return; | |
cfc10d3b ACM |
130 | self->long_name = name; |
131 | self->long_name_len = strlen(name); | |
132 | } | |
133 | ||
134 | static void dso__set_basename(struct dso *self) | |
135 | { | |
136 | self->short_name = basename(self->long_name); | |
137 | } | |
138 | ||
00a192b3 | 139 | struct dso *dso__new(const char *name) |
a2928c42 ACM |
140 | { |
141 | struct dso *self = malloc(sizeof(*self) + strlen(name) + 1); | |
142 | ||
143 | if (self != NULL) { | |
144 | strcpy(self->name, name); | |
cfc10d3b | 145 | dso__set_long_name(self, self->name); |
439d473b | 146 | self->short_name = self->name; |
a2928c42 | 147 | self->syms = RB_ROOT; |
fc54db51 | 148 | self->find_symbol = dso__find_symbol; |
52d422de | 149 | self->slen_calculated = 0; |
94cb9e38 | 150 | self->origin = DSO__ORIG_NOT_FOUND; |
8d06367f ACM |
151 | self->loaded = 0; |
152 | self->has_build_id = 0; | |
a2928c42 ACM |
153 | } |
154 | ||
155 | return self; | |
156 | } | |
157 | ||
158 | static void dso__delete_symbols(struct dso *self) | |
159 | { | |
160 | struct symbol *pos; | |
161 | struct rb_node *next = rb_first(&self->syms); | |
162 | ||
163 | while (next) { | |
164 | pos = rb_entry(next, struct symbol, rb_node); | |
165 | next = rb_next(&pos->rb_node); | |
c8c96525 | 166 | rb_erase(&pos->rb_node, &self->syms); |
00a192b3 | 167 | symbol__delete(pos); |
a2928c42 ACM |
168 | } |
169 | } | |
170 | ||
171 | void dso__delete(struct dso *self) | |
172 | { | |
173 | dso__delete_symbols(self); | |
439d473b ACM |
174 | if (self->long_name != self->name) |
175 | free(self->long_name); | |
a2928c42 ACM |
176 | free(self); |
177 | } | |
178 | ||
8d06367f ACM |
179 | void dso__set_build_id(struct dso *self, void *build_id) |
180 | { | |
181 | memcpy(self->build_id, build_id, sizeof(self->build_id)); | |
182 | self->has_build_id = 1; | |
183 | } | |
184 | ||
a2928c42 ACM |
185 | static void dso__insert_symbol(struct dso *self, struct symbol *sym) |
186 | { | |
187 | struct rb_node **p = &self->syms.rb_node; | |
188 | struct rb_node *parent = NULL; | |
9cffa8d5 | 189 | const u64 ip = sym->start; |
a2928c42 ACM |
190 | struct symbol *s; |
191 | ||
192 | while (*p != NULL) { | |
193 | parent = *p; | |
194 | s = rb_entry(parent, struct symbol, rb_node); | |
195 | if (ip < s->start) | |
196 | p = &(*p)->rb_left; | |
197 | else | |
198 | p = &(*p)->rb_right; | |
199 | } | |
200 | rb_link_node(&sym->rb_node, parent, p); | |
201 | rb_insert_color(&sym->rb_node, &self->syms); | |
202 | } | |
203 | ||
9cffa8d5 | 204 | struct symbol *dso__find_symbol(struct dso *self, u64 ip) |
a2928c42 ACM |
205 | { |
206 | struct rb_node *n; | |
207 | ||
208 | if (self == NULL) | |
209 | return NULL; | |
210 | ||
211 | n = self->syms.rb_node; | |
212 | ||
213 | while (n) { | |
214 | struct symbol *s = rb_entry(n, struct symbol, rb_node); | |
215 | ||
216 | if (ip < s->start) | |
217 | n = n->rb_left; | |
218 | else if (ip > s->end) | |
219 | n = n->rb_right; | |
220 | else | |
221 | return s; | |
222 | } | |
223 | ||
224 | return NULL; | |
225 | } | |
226 | ||
8d06367f | 227 | int build_id__sprintf(u8 *self, int len, char *bf) |
a2928c42 | 228 | { |
8d06367f ACM |
229 | char *bid = bf; |
230 | u8 *raw = self; | |
231 | int i; | |
a2928c42 | 232 | |
8d06367f ACM |
233 | for (i = 0; i < len; ++i) { |
234 | sprintf(bid, "%02x", *raw); | |
235 | ++raw; | |
236 | bid += 2; | |
237 | } | |
238 | ||
239 | return raw - self; | |
240 | } | |
241 | ||
9e03eb2d | 242 | size_t dso__fprintf_buildid(struct dso *self, FILE *fp) |
8d06367f ACM |
243 | { |
244 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
8d06367f ACM |
245 | |
246 | build_id__sprintf(self->build_id, sizeof(self->build_id), sbuild_id); | |
9e03eb2d ACM |
247 | return fprintf(fp, "%s", sbuild_id); |
248 | } | |
249 | ||
250 | size_t dso__fprintf(struct dso *self, FILE *fp) | |
251 | { | |
252 | struct rb_node *nd; | |
253 | size_t ret = fprintf(fp, "dso: %s (", self->short_name); | |
254 | ||
255 | ret += dso__fprintf_buildid(self, fp); | |
256 | ret += fprintf(fp, ")\n"); | |
8d06367f | 257 | |
a2928c42 ACM |
258 | for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) { |
259 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); | |
260 | ret += symbol__fprintf(pos, fp); | |
261 | } | |
262 | ||
263 | return ret; | |
264 | } | |
265 | ||
2e538c4a ACM |
266 | /* |
267 | * Loads the function entries in /proc/kallsyms into kernel_map->dso, | |
268 | * so that we can in the next step set the symbol ->end address and then | |
269 | * call kernel_maps__split_kallsyms. | |
270 | */ | |
6beba7ad | 271 | static int kernel_maps__load_all_kallsyms(void) |
a2928c42 | 272 | { |
a2928c42 ACM |
273 | char *line = NULL; |
274 | size_t n; | |
275 | FILE *file = fopen("/proc/kallsyms", "r"); | |
276 | ||
277 | if (file == NULL) | |
278 | goto out_failure; | |
279 | ||
280 | while (!feof(file)) { | |
9cffa8d5 | 281 | u64 start; |
a2928c42 ACM |
282 | struct symbol *sym; |
283 | int line_len, len; | |
284 | char symbol_type; | |
2e538c4a | 285 | char *symbol_name; |
a2928c42 ACM |
286 | |
287 | line_len = getline(&line, &n, file); | |
288 | if (line_len < 0) | |
289 | break; | |
290 | ||
291 | if (!line) | |
292 | goto out_failure; | |
293 | ||
294 | line[--line_len] = '\0'; /* \n */ | |
295 | ||
a0055ae2 | 296 | len = hex2u64(line, &start); |
a2928c42 ACM |
297 | |
298 | len++; | |
299 | if (len + 2 >= line_len) | |
300 | continue; | |
301 | ||
302 | symbol_type = toupper(line[len]); | |
303 | /* | |
304 | * We're interested only in code ('T'ext) | |
305 | */ | |
306 | if (symbol_type != 'T' && symbol_type != 'W') | |
307 | continue; | |
af427bf5 ACM |
308 | |
309 | symbol_name = line + len + 2; | |
2e538c4a ACM |
310 | /* |
311 | * Will fix up the end later, when we have all symbols sorted. | |
312 | */ | |
00a192b3 | 313 | sym = symbol__new(start, 0, symbol_name); |
af427bf5 | 314 | |
2e538c4a ACM |
315 | if (sym == NULL) |
316 | goto out_delete_line; | |
317 | ||
82164161 ACM |
318 | /* |
319 | * We will pass the symbols to the filter later, in | |
320 | * kernel_maps__split_kallsyms, when we have split the | |
321 | * maps per module | |
322 | */ | |
2e538c4a ACM |
323 | dso__insert_symbol(kernel_map->dso, sym); |
324 | } | |
325 | ||
326 | free(line); | |
327 | fclose(file); | |
328 | ||
329 | return 0; | |
330 | ||
331 | out_delete_line: | |
332 | free(line); | |
333 | out_failure: | |
334 | return -1; | |
335 | } | |
336 | ||
337 | /* | |
338 | * Split the symbols into maps, making sure there are no overlaps, i.e. the | |
339 | * kernel range is broken in several maps, named [kernel].N, as we don't have | |
340 | * the original ELF section names vmlinux have. | |
341 | */ | |
c338aee8 | 342 | static int kernel_maps__split_kallsyms(symbol_filter_t filter) |
2e538c4a ACM |
343 | { |
344 | struct map *map = kernel_map; | |
345 | struct symbol *pos; | |
346 | int count = 0; | |
347 | struct rb_node *next = rb_first(&kernel_map->dso->syms); | |
348 | int kernel_range = 0; | |
349 | ||
350 | while (next) { | |
351 | char *module; | |
352 | ||
353 | pos = rb_entry(next, struct symbol, rb_node); | |
354 | next = rb_next(&pos->rb_node); | |
355 | ||
356 | module = strchr(pos->name, '\t'); | |
357 | if (module) { | |
2e538c4a ACM |
358 | *module++ = '\0'; |
359 | ||
af427bf5 ACM |
360 | if (strcmp(map->dso->name, module)) { |
361 | map = kernel_maps__find_by_dso_name(module); | |
362 | if (!map) { | |
6beba7ad ACM |
363 | pr_err("/proc/{kallsyms,modules} " |
364 | "inconsistency!\n"); | |
af427bf5 ACM |
365 | return -1; |
366 | } | |
367 | } | |
2e538c4a ACM |
368 | /* |
369 | * So that we look just like we get from .ko files, | |
370 | * i.e. not prelinked, relative to map->start. | |
371 | */ | |
372 | pos->start = map->map_ip(map, pos->start); | |
373 | pos->end = map->map_ip(map, pos->end); | |
374 | } else if (map != kernel_map) { | |
375 | char dso_name[PATH_MAX]; | |
376 | struct dso *dso; | |
377 | ||
378 | snprintf(dso_name, sizeof(dso_name), "[kernel].%d", | |
379 | kernel_range++); | |
380 | ||
00a192b3 | 381 | dso = dso__new(dso_name); |
2e538c4a ACM |
382 | if (dso == NULL) |
383 | return -1; | |
384 | ||
385 | map = map__new2(pos->start, dso); | |
386 | if (map == NULL) { | |
387 | dso__delete(dso); | |
388 | return -1; | |
389 | } | |
a2928c42 | 390 | |
ed52ce2e | 391 | map->map_ip = map->unmap_ip = identity__map_ip; |
2e538c4a ACM |
392 | kernel_maps__insert(map); |
393 | ++kernel_range; | |
394 | } | |
a2928c42 | 395 | |
2e538c4a | 396 | if (filter && filter(map, pos)) { |
2e538c4a | 397 | rb_erase(&pos->rb_node, &kernel_map->dso->syms); |
00a192b3 | 398 | symbol__delete(pos); |
2e538c4a ACM |
399 | } else { |
400 | if (map != kernel_map) { | |
401 | rb_erase(&pos->rb_node, &kernel_map->dso->syms); | |
402 | dso__insert_symbol(map->dso, pos); | |
403 | } | |
9974f496 MG |
404 | count++; |
405 | } | |
a2928c42 ACM |
406 | } |
407 | ||
9974f496 | 408 | return count; |
2e538c4a | 409 | } |
a2928c42 | 410 | |
2e538c4a | 411 | |
c338aee8 | 412 | static int kernel_maps__load_kallsyms(symbol_filter_t filter) |
2e538c4a | 413 | { |
6beba7ad | 414 | if (kernel_maps__load_all_kallsyms()) |
2e538c4a ACM |
415 | return -1; |
416 | ||
417 | dso__fixup_sym_end(kernel_map->dso); | |
c338aee8 | 418 | kernel_map->dso->origin = DSO__ORIG_KERNEL; |
2e538c4a | 419 | |
c338aee8 | 420 | return kernel_maps__split_kallsyms(filter); |
a2928c42 ACM |
421 | } |
422 | ||
c338aee8 | 423 | size_t kernel_maps__fprintf(FILE *fp) |
af427bf5 | 424 | { |
6beba7ad | 425 | size_t printed = fprintf(fp, "Kernel maps:\n"); |
af427bf5 ACM |
426 | struct rb_node *nd; |
427 | ||
af427bf5 ACM |
428 | for (nd = rb_first(&kernel_maps); nd; nd = rb_next(nd)) { |
429 | struct map *pos = rb_entry(nd, struct map, rb_node); | |
430 | ||
2e538c4a | 431 | printed += fprintf(fp, "Map:"); |
af427bf5 | 432 | printed += map__fprintf(pos, fp); |
6beba7ad | 433 | if (verbose > 1) { |
2e538c4a ACM |
434 | printed += dso__fprintf(pos->dso, fp); |
435 | printed += fprintf(fp, "--\n"); | |
436 | } | |
af427bf5 ACM |
437 | } |
438 | ||
6beba7ad | 439 | return printed + fprintf(fp, "END kernel maps\n"); |
af427bf5 ACM |
440 | } |
441 | ||
439d473b | 442 | static int dso__load_perf_map(struct dso *self, struct map *map, |
6beba7ad | 443 | symbol_filter_t filter) |
80d496be PE |
444 | { |
445 | char *line = NULL; | |
446 | size_t n; | |
447 | FILE *file; | |
448 | int nr_syms = 0; | |
449 | ||
439d473b | 450 | file = fopen(self->long_name, "r"); |
80d496be PE |
451 | if (file == NULL) |
452 | goto out_failure; | |
453 | ||
454 | while (!feof(file)) { | |
9cffa8d5 | 455 | u64 start, size; |
80d496be PE |
456 | struct symbol *sym; |
457 | int line_len, len; | |
458 | ||
459 | line_len = getline(&line, &n, file); | |
460 | if (line_len < 0) | |
461 | break; | |
462 | ||
463 | if (!line) | |
464 | goto out_failure; | |
465 | ||
466 | line[--line_len] = '\0'; /* \n */ | |
467 | ||
468 | len = hex2u64(line, &start); | |
469 | ||
470 | len++; | |
471 | if (len + 2 >= line_len) | |
472 | continue; | |
473 | ||
474 | len += hex2u64(line + len, &size); | |
475 | ||
476 | len++; | |
477 | if (len + 2 >= line_len) | |
478 | continue; | |
479 | ||
00a192b3 | 480 | sym = symbol__new(start, size, line + len); |
80d496be PE |
481 | |
482 | if (sym == NULL) | |
483 | goto out_delete_line; | |
484 | ||
439d473b | 485 | if (filter && filter(map, sym)) |
00a192b3 | 486 | symbol__delete(sym); |
80d496be PE |
487 | else { |
488 | dso__insert_symbol(self, sym); | |
489 | nr_syms++; | |
490 | } | |
491 | } | |
492 | ||
493 | free(line); | |
494 | fclose(file); | |
495 | ||
496 | return nr_syms; | |
497 | ||
498 | out_delete_line: | |
499 | free(line); | |
500 | out_failure: | |
501 | return -1; | |
502 | } | |
503 | ||
a2928c42 ACM |
504 | /** |
505 | * elf_symtab__for_each_symbol - iterate thru all the symbols | |
506 | * | |
507 | * @self: struct elf_symtab instance to iterate | |
83a0944f | 508 | * @idx: uint32_t idx |
a2928c42 ACM |
509 | * @sym: GElf_Sym iterator |
510 | */ | |
83a0944f IM |
511 | #define elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) \ |
512 | for (idx = 0, gelf_getsym(syms, idx, &sym);\ | |
513 | idx < nr_syms; \ | |
514 | idx++, gelf_getsym(syms, idx, &sym)) | |
a2928c42 ACM |
515 | |
516 | static inline uint8_t elf_sym__type(const GElf_Sym *sym) | |
517 | { | |
518 | return GELF_ST_TYPE(sym->st_info); | |
519 | } | |
520 | ||
521 | static inline int elf_sym__is_function(const GElf_Sym *sym) | |
522 | { | |
523 | return elf_sym__type(sym) == STT_FUNC && | |
524 | sym->st_name != 0 && | |
81833130 | 525 | sym->st_shndx != SHN_UNDEF; |
a2928c42 ACM |
526 | } |
527 | ||
6cfcc53e MG |
528 | static inline int elf_sym__is_label(const GElf_Sym *sym) |
529 | { | |
530 | return elf_sym__type(sym) == STT_NOTYPE && | |
531 | sym->st_name != 0 && | |
532 | sym->st_shndx != SHN_UNDEF && | |
533 | sym->st_shndx != SHN_ABS; | |
534 | } | |
535 | ||
536 | static inline const char *elf_sec__name(const GElf_Shdr *shdr, | |
537 | const Elf_Data *secstrs) | |
538 | { | |
539 | return secstrs->d_buf + shdr->sh_name; | |
540 | } | |
541 | ||
542 | static inline int elf_sec__is_text(const GElf_Shdr *shdr, | |
543 | const Elf_Data *secstrs) | |
544 | { | |
545 | return strstr(elf_sec__name(shdr, secstrs), "text") != NULL; | |
546 | } | |
547 | ||
a2928c42 ACM |
548 | static inline const char *elf_sym__name(const GElf_Sym *sym, |
549 | const Elf_Data *symstrs) | |
550 | { | |
551 | return symstrs->d_buf + sym->st_name; | |
552 | } | |
553 | ||
554 | static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, | |
555 | GElf_Shdr *shp, const char *name, | |
83a0944f | 556 | size_t *idx) |
a2928c42 ACM |
557 | { |
558 | Elf_Scn *sec = NULL; | |
559 | size_t cnt = 1; | |
560 | ||
561 | while ((sec = elf_nextscn(elf, sec)) != NULL) { | |
562 | char *str; | |
563 | ||
564 | gelf_getshdr(sec, shp); | |
565 | str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name); | |
566 | if (!strcmp(name, str)) { | |
83a0944f IM |
567 | if (idx) |
568 | *idx = cnt; | |
a2928c42 ACM |
569 | break; |
570 | } | |
571 | ++cnt; | |
572 | } | |
573 | ||
574 | return sec; | |
575 | } | |
576 | ||
8ce998d6 ACM |
577 | #define elf_section__for_each_rel(reldata, pos, pos_mem, idx, nr_entries) \ |
578 | for (idx = 0, pos = gelf_getrel(reldata, 0, &pos_mem); \ | |
579 | idx < nr_entries; \ | |
580 | ++idx, pos = gelf_getrel(reldata, idx, &pos_mem)) | |
581 | ||
582 | #define elf_section__for_each_rela(reldata, pos, pos_mem, idx, nr_entries) \ | |
583 | for (idx = 0, pos = gelf_getrela(reldata, 0, &pos_mem); \ | |
584 | idx < nr_entries; \ | |
585 | ++idx, pos = gelf_getrela(reldata, idx, &pos_mem)) | |
586 | ||
a25e46c4 ACM |
587 | /* |
588 | * We need to check if we have a .dynsym, so that we can handle the | |
589 | * .plt, synthesizing its symbols, that aren't on the symtabs (be it | |
590 | * .dynsym or .symtab). | |
591 | * And always look at the original dso, not at debuginfo packages, that | |
592 | * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS). | |
593 | */ | |
82164161 ACM |
594 | static int dso__synthesize_plt_symbols(struct dso *self, struct map *map, |
595 | symbol_filter_t filter) | |
8ce998d6 ACM |
596 | { |
597 | uint32_t nr_rel_entries, idx; | |
598 | GElf_Sym sym; | |
9cffa8d5 | 599 | u64 plt_offset; |
8ce998d6 ACM |
600 | GElf_Shdr shdr_plt; |
601 | struct symbol *f; | |
a25e46c4 | 602 | GElf_Shdr shdr_rel_plt, shdr_dynsym; |
8ce998d6 | 603 | Elf_Data *reldata, *syms, *symstrs; |
a25e46c4 ACM |
604 | Elf_Scn *scn_plt_rel, *scn_symstrs, *scn_dynsym; |
605 | size_t dynsym_idx; | |
606 | GElf_Ehdr ehdr; | |
8ce998d6 | 607 | char sympltname[1024]; |
a25e46c4 ACM |
608 | Elf *elf; |
609 | int nr = 0, symidx, fd, err = 0; | |
610 | ||
439d473b | 611 | fd = open(self->long_name, O_RDONLY); |
a25e46c4 ACM |
612 | if (fd < 0) |
613 | goto out; | |
614 | ||
84087126 | 615 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
a25e46c4 ACM |
616 | if (elf == NULL) |
617 | goto out_close; | |
618 | ||
619 | if (gelf_getehdr(elf, &ehdr) == NULL) | |
620 | goto out_elf_end; | |
621 | ||
622 | scn_dynsym = elf_section_by_name(elf, &ehdr, &shdr_dynsym, | |
623 | ".dynsym", &dynsym_idx); | |
624 | if (scn_dynsym == NULL) | |
625 | goto out_elf_end; | |
8ce998d6 | 626 | |
a25e46c4 | 627 | scn_plt_rel = elf_section_by_name(elf, &ehdr, &shdr_rel_plt, |
8ce998d6 ACM |
628 | ".rela.plt", NULL); |
629 | if (scn_plt_rel == NULL) { | |
a25e46c4 | 630 | scn_plt_rel = elf_section_by_name(elf, &ehdr, &shdr_rel_plt, |
8ce998d6 ACM |
631 | ".rel.plt", NULL); |
632 | if (scn_plt_rel == NULL) | |
a25e46c4 | 633 | goto out_elf_end; |
8ce998d6 ACM |
634 | } |
635 | ||
a25e46c4 ACM |
636 | err = -1; |
637 | ||
8ce998d6 | 638 | if (shdr_rel_plt.sh_link != dynsym_idx) |
a25e46c4 | 639 | goto out_elf_end; |
8ce998d6 | 640 | |
a25e46c4 ACM |
641 | if (elf_section_by_name(elf, &ehdr, &shdr_plt, ".plt", NULL) == NULL) |
642 | goto out_elf_end; | |
8ce998d6 ACM |
643 | |
644 | /* | |
83a0944f | 645 | * Fetch the relocation section to find the idxes to the GOT |
8ce998d6 ACM |
646 | * and the symbols in the .dynsym they refer to. |
647 | */ | |
648 | reldata = elf_getdata(scn_plt_rel, NULL); | |
649 | if (reldata == NULL) | |
a25e46c4 | 650 | goto out_elf_end; |
8ce998d6 ACM |
651 | |
652 | syms = elf_getdata(scn_dynsym, NULL); | |
653 | if (syms == NULL) | |
a25e46c4 | 654 | goto out_elf_end; |
8ce998d6 | 655 | |
a25e46c4 | 656 | scn_symstrs = elf_getscn(elf, shdr_dynsym.sh_link); |
8ce998d6 | 657 | if (scn_symstrs == NULL) |
a25e46c4 | 658 | goto out_elf_end; |
8ce998d6 ACM |
659 | |
660 | symstrs = elf_getdata(scn_symstrs, NULL); | |
661 | if (symstrs == NULL) | |
a25e46c4 | 662 | goto out_elf_end; |
8ce998d6 ACM |
663 | |
664 | nr_rel_entries = shdr_rel_plt.sh_size / shdr_rel_plt.sh_entsize; | |
665 | plt_offset = shdr_plt.sh_offset; | |
666 | ||
667 | if (shdr_rel_plt.sh_type == SHT_RELA) { | |
668 | GElf_Rela pos_mem, *pos; | |
669 | ||
670 | elf_section__for_each_rela(reldata, pos, pos_mem, idx, | |
671 | nr_rel_entries) { | |
672 | symidx = GELF_R_SYM(pos->r_info); | |
673 | plt_offset += shdr_plt.sh_entsize; | |
674 | gelf_getsym(syms, symidx, &sym); | |
675 | snprintf(sympltname, sizeof(sympltname), | |
676 | "%s@plt", elf_sym__name(&sym, symstrs)); | |
677 | ||
678 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, | |
00a192b3 | 679 | sympltname); |
8ce998d6 | 680 | if (!f) |
a25e46c4 | 681 | goto out_elf_end; |
8ce998d6 | 682 | |
82164161 ACM |
683 | if (filter && filter(map, f)) |
684 | symbol__delete(f); | |
685 | else { | |
686 | dso__insert_symbol(self, f); | |
687 | ++nr; | |
688 | } | |
8ce998d6 ACM |
689 | } |
690 | } else if (shdr_rel_plt.sh_type == SHT_REL) { | |
691 | GElf_Rel pos_mem, *pos; | |
692 | elf_section__for_each_rel(reldata, pos, pos_mem, idx, | |
693 | nr_rel_entries) { | |
694 | symidx = GELF_R_SYM(pos->r_info); | |
695 | plt_offset += shdr_plt.sh_entsize; | |
696 | gelf_getsym(syms, symidx, &sym); | |
697 | snprintf(sympltname, sizeof(sympltname), | |
698 | "%s@plt", elf_sym__name(&sym, symstrs)); | |
699 | ||
700 | f = symbol__new(plt_offset, shdr_plt.sh_entsize, | |
00a192b3 | 701 | sympltname); |
8ce998d6 | 702 | if (!f) |
a25e46c4 | 703 | goto out_elf_end; |
8ce998d6 | 704 | |
82164161 ACM |
705 | if (filter && filter(map, f)) |
706 | symbol__delete(f); | |
707 | else { | |
708 | dso__insert_symbol(self, f); | |
709 | ++nr; | |
710 | } | |
8ce998d6 | 711 | } |
8ce998d6 ACM |
712 | } |
713 | ||
a25e46c4 ACM |
714 | err = 0; |
715 | out_elf_end: | |
716 | elf_end(elf); | |
717 | out_close: | |
718 | close(fd); | |
719 | ||
720 | if (err == 0) | |
721 | return nr; | |
722 | out: | |
6beba7ad ACM |
723 | pr_warning("%s: problems reading %s PLT info.\n", |
724 | __func__, self->long_name); | |
a25e46c4 | 725 | return 0; |
8ce998d6 ACM |
726 | } |
727 | ||
439d473b ACM |
728 | static int dso__load_sym(struct dso *self, struct map *map, const char *name, |
729 | int fd, symbol_filter_t filter, int kernel, | |
6beba7ad | 730 | int kmodule) |
a2928c42 | 731 | { |
2e538c4a ACM |
732 | struct map *curr_map = map; |
733 | struct dso *curr_dso = self; | |
734 | size_t dso_name_len = strlen(self->short_name); | |
6cfcc53e | 735 | Elf_Data *symstrs, *secstrs; |
a2928c42 ACM |
736 | uint32_t nr_syms; |
737 | int err = -1; | |
83a0944f | 738 | uint32_t idx; |
a2928c42 ACM |
739 | GElf_Ehdr ehdr; |
740 | GElf_Shdr shdr; | |
741 | Elf_Data *syms; | |
742 | GElf_Sym sym; | |
a25e46c4 | 743 | Elf_Scn *sec, *sec_strndx; |
a2928c42 | 744 | Elf *elf; |
439d473b | 745 | int nr = 0; |
a2928c42 | 746 | |
84087126 | 747 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
a2928c42 | 748 | if (elf == NULL) { |
6beba7ad | 749 | pr_err("%s: cannot read %s ELF file.\n", __func__, name); |
a2928c42 ACM |
750 | goto out_close; |
751 | } | |
752 | ||
753 | if (gelf_getehdr(elf, &ehdr) == NULL) { | |
6beba7ad | 754 | pr_err("%s: cannot get elf header.\n", __func__); |
a2928c42 ACM |
755 | goto out_elf_end; |
756 | } | |
757 | ||
758 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL); | |
8ce998d6 | 759 | if (sec == NULL) { |
a25e46c4 ACM |
760 | sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL); |
761 | if (sec == NULL) | |
8ce998d6 | 762 | goto out_elf_end; |
8ce998d6 | 763 | } |
a2928c42 ACM |
764 | |
765 | syms = elf_getdata(sec, NULL); | |
766 | if (syms == NULL) | |
767 | goto out_elf_end; | |
768 | ||
769 | sec = elf_getscn(elf, shdr.sh_link); | |
770 | if (sec == NULL) | |
771 | goto out_elf_end; | |
772 | ||
773 | symstrs = elf_getdata(sec, NULL); | |
774 | if (symstrs == NULL) | |
775 | goto out_elf_end; | |
776 | ||
6cfcc53e MG |
777 | sec_strndx = elf_getscn(elf, ehdr.e_shstrndx); |
778 | if (sec_strndx == NULL) | |
779 | goto out_elf_end; | |
780 | ||
781 | secstrs = elf_getdata(sec_strndx, NULL); | |
9b30a26b | 782 | if (secstrs == NULL) |
6cfcc53e MG |
783 | goto out_elf_end; |
784 | ||
a2928c42 ACM |
785 | nr_syms = shdr.sh_size / shdr.sh_entsize; |
786 | ||
e9fbc9dc | 787 | memset(&sym, 0, sizeof(sym)); |
d20ff6bd MG |
788 | if (!kernel) { |
789 | self->adjust_symbols = (ehdr.e_type == ET_EXEC || | |
30d7a77d ACM |
790 | elf_section_by_name(elf, &ehdr, &shdr, |
791 | ".gnu.prelink_undo", | |
792 | NULL) != NULL); | |
d20ff6bd MG |
793 | } else self->adjust_symbols = 0; |
794 | ||
83a0944f | 795 | elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) { |
a2928c42 | 796 | struct symbol *f; |
83a0944f | 797 | const char *elf_name; |
2e538c4a | 798 | char *demangled = NULL; |
6cfcc53e MG |
799 | int is_label = elf_sym__is_label(&sym); |
800 | const char *section_name; | |
a2928c42 | 801 | |
6cfcc53e | 802 | if (!is_label && !elf_sym__is_function(&sym)) |
a2928c42 ACM |
803 | continue; |
804 | ||
805 | sec = elf_getscn(elf, sym.st_shndx); | |
806 | if (!sec) | |
807 | goto out_elf_end; | |
808 | ||
809 | gelf_getshdr(sec, &shdr); | |
6cfcc53e MG |
810 | |
811 | if (is_label && !elf_sec__is_text(&shdr, secstrs)) | |
812 | continue; | |
813 | ||
2e538c4a | 814 | elf_name = elf_sym__name(&sym, symstrs); |
6cfcc53e | 815 | section_name = elf_sec__name(&shdr, secstrs); |
0b73da3f | 816 | |
2e538c4a ACM |
817 | if (kernel || kmodule) { |
818 | char dso_name[PATH_MAX]; | |
819 | ||
820 | if (strcmp(section_name, | |
821 | curr_dso->short_name + dso_name_len) == 0) | |
822 | goto new_symbol; | |
823 | ||
824 | if (strcmp(section_name, ".text") == 0) { | |
825 | curr_map = map; | |
826 | curr_dso = self; | |
827 | goto new_symbol; | |
828 | } | |
829 | ||
830 | snprintf(dso_name, sizeof(dso_name), | |
831 | "%s%s", self->short_name, section_name); | |
832 | ||
833 | curr_map = kernel_maps__find_by_dso_name(dso_name); | |
834 | if (curr_map == NULL) { | |
835 | u64 start = sym.st_value; | |
836 | ||
837 | if (kmodule) | |
838 | start += map->start + shdr.sh_offset; | |
839 | ||
00a192b3 | 840 | curr_dso = dso__new(dso_name); |
2e538c4a ACM |
841 | if (curr_dso == NULL) |
842 | goto out_elf_end; | |
843 | curr_map = map__new2(start, curr_dso); | |
844 | if (curr_map == NULL) { | |
845 | dso__delete(curr_dso); | |
846 | goto out_elf_end; | |
847 | } | |
ed52ce2e ACM |
848 | curr_map->map_ip = identity__map_ip; |
849 | curr_map->unmap_ip = identity__map_ip; | |
2e538c4a ACM |
850 | curr_dso->origin = DSO__ORIG_KERNEL; |
851 | kernel_maps__insert(curr_map); | |
852 | dsos__add(curr_dso); | |
853 | } else | |
854 | curr_dso = curr_map->dso; | |
855 | ||
856 | goto new_symbol; | |
af427bf5 ACM |
857 | } |
858 | ||
2e538c4a | 859 | if (curr_dso->adjust_symbols) { |
6beba7ad ACM |
860 | pr_debug2("adjusting symbol: st_value: %Lx sh_addr: " |
861 | "%Lx sh_offset: %Lx\n", (u64)sym.st_value, | |
862 | (u64)shdr.sh_addr, (u64)shdr.sh_offset); | |
f5812a7a | 863 | sym.st_value -= shdr.sh_addr - shdr.sh_offset; |
af427bf5 | 864 | } |
28ac909b ACM |
865 | /* |
866 | * We need to figure out if the object was created from C++ sources | |
867 | * DWARF DW_compile_unit has this, but we don't always have access | |
868 | * to it... | |
869 | */ | |
83a0944f | 870 | demangled = bfd_demangle(NULL, elf_name, DMGL_PARAMS | DMGL_ANSI); |
28ac909b | 871 | if (demangled != NULL) |
83a0944f | 872 | elf_name = demangled; |
2e538c4a | 873 | new_symbol: |
00a192b3 | 874 | f = symbol__new(sym.st_value, sym.st_size, elf_name); |
28ac909b | 875 | free(demangled); |
a2928c42 ACM |
876 | if (!f) |
877 | goto out_elf_end; | |
878 | ||
2e538c4a | 879 | if (filter && filter(curr_map, f)) |
00a192b3 | 880 | symbol__delete(f); |
69ee69f6 | 881 | else { |
2e538c4a | 882 | dso__insert_symbol(curr_dso, f); |
69ee69f6 ACM |
883 | nr++; |
884 | } | |
a2928c42 ACM |
885 | } |
886 | ||
2e538c4a ACM |
887 | /* |
888 | * For misannotated, zeroed, ASM function sizes. | |
889 | */ | |
890 | if (nr > 0) | |
891 | dso__fixup_sym_end(self); | |
a2928c42 ACM |
892 | err = nr; |
893 | out_elf_end: | |
894 | elf_end(elf); | |
895 | out_close: | |
896 | return err; | |
897 | } | |
898 | ||
78075caa ACM |
899 | static bool dso__build_id_equal(const struct dso *self, u8 *build_id) |
900 | { | |
901 | return memcmp(self->build_id, build_id, sizeof(self->build_id)) == 0; | |
902 | } | |
903 | ||
e30a3d12 | 904 | bool dsos__read_build_ids(void) |
57f395a7 | 905 | { |
e30a3d12 | 906 | bool have_build_id = false; |
57f395a7 FW |
907 | struct dso *pos; |
908 | ||
e30a3d12 ACM |
909 | list_for_each_entry(pos, &dsos, node) |
910 | if (filename__read_build_id(pos->long_name, pos->build_id, | |
911 | sizeof(pos->build_id)) > 0) { | |
912 | have_build_id = true; | |
913 | pos->has_build_id = true; | |
914 | } | |
57f395a7 | 915 | |
e30a3d12 | 916 | return have_build_id; |
57f395a7 FW |
917 | } |
918 | ||
fd7a346e ACM |
919 | /* |
920 | * Align offset to 4 bytes as needed for note name and descriptor data. | |
921 | */ | |
922 | #define NOTE_ALIGN(n) (((n) + 3) & -4U) | |
923 | ||
2643ce11 | 924 | int filename__read_build_id(const char *filename, void *bf, size_t size) |
4d1e00a8 | 925 | { |
2643ce11 | 926 | int fd, err = -1; |
4d1e00a8 ACM |
927 | GElf_Ehdr ehdr; |
928 | GElf_Shdr shdr; | |
fd7a346e | 929 | Elf_Data *data; |
4d1e00a8 | 930 | Elf_Scn *sec; |
e57cfcda | 931 | Elf_Kind ek; |
fd7a346e | 932 | void *ptr; |
4d1e00a8 | 933 | Elf *elf; |
4d1e00a8 | 934 | |
2643ce11 ACM |
935 | if (size < BUILD_ID_SIZE) |
936 | goto out; | |
937 | ||
938 | fd = open(filename, O_RDONLY); | |
4d1e00a8 ACM |
939 | if (fd < 0) |
940 | goto out; | |
941 | ||
84087126 | 942 | elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); |
4d1e00a8 | 943 | if (elf == NULL) { |
8d06367f | 944 | pr_debug2("%s: cannot read %s ELF file.\n", __func__, filename); |
4d1e00a8 ACM |
945 | goto out_close; |
946 | } | |
947 | ||
e57cfcda PE |
948 | ek = elf_kind(elf); |
949 | if (ek != ELF_K_ELF) | |
950 | goto out_elf_end; | |
951 | ||
4d1e00a8 | 952 | if (gelf_getehdr(elf, &ehdr) == NULL) { |
6beba7ad | 953 | pr_err("%s: cannot get elf header.\n", __func__); |
4d1e00a8 ACM |
954 | goto out_elf_end; |
955 | } | |
956 | ||
2643ce11 ACM |
957 | sec = elf_section_by_name(elf, &ehdr, &shdr, |
958 | ".note.gnu.build-id", NULL); | |
fd7a346e ACM |
959 | if (sec == NULL) { |
960 | sec = elf_section_by_name(elf, &ehdr, &shdr, | |
961 | ".notes", NULL); | |
962 | if (sec == NULL) | |
963 | goto out_elf_end; | |
964 | } | |
4d1e00a8 | 965 | |
fd7a346e ACM |
966 | data = elf_getdata(sec, NULL); |
967 | if (data == NULL) | |
4d1e00a8 | 968 | goto out_elf_end; |
fd7a346e ACM |
969 | |
970 | ptr = data->d_buf; | |
971 | while (ptr < (data->d_buf + data->d_size)) { | |
972 | GElf_Nhdr *nhdr = ptr; | |
973 | int namesz = NOTE_ALIGN(nhdr->n_namesz), | |
974 | descsz = NOTE_ALIGN(nhdr->n_descsz); | |
975 | const char *name; | |
976 | ||
977 | ptr += sizeof(*nhdr); | |
978 | name = ptr; | |
979 | ptr += namesz; | |
980 | if (nhdr->n_type == NT_GNU_BUILD_ID && | |
981 | nhdr->n_namesz == sizeof("GNU")) { | |
982 | if (memcmp(name, "GNU", sizeof("GNU")) == 0) { | |
983 | memcpy(bf, ptr, BUILD_ID_SIZE); | |
984 | err = BUILD_ID_SIZE; | |
985 | break; | |
986 | } | |
987 | } | |
988 | ptr += descsz; | |
989 | } | |
2643ce11 ACM |
990 | out_elf_end: |
991 | elf_end(elf); | |
992 | out_close: | |
993 | close(fd); | |
994 | out: | |
995 | return err; | |
996 | } | |
997 | ||
f1617b40 ACM |
998 | int sysfs__read_build_id(const char *filename, void *build_id, size_t size) |
999 | { | |
1000 | int fd, err = -1; | |
1001 | ||
1002 | if (size < BUILD_ID_SIZE) | |
1003 | goto out; | |
1004 | ||
1005 | fd = open(filename, O_RDONLY); | |
1006 | if (fd < 0) | |
1007 | goto out; | |
1008 | ||
1009 | while (1) { | |
1010 | char bf[BUFSIZ]; | |
1011 | GElf_Nhdr nhdr; | |
1012 | int namesz, descsz; | |
1013 | ||
1014 | if (read(fd, &nhdr, sizeof(nhdr)) != sizeof(nhdr)) | |
1015 | break; | |
1016 | ||
fd7a346e ACM |
1017 | namesz = NOTE_ALIGN(nhdr.n_namesz); |
1018 | descsz = NOTE_ALIGN(nhdr.n_descsz); | |
f1617b40 ACM |
1019 | if (nhdr.n_type == NT_GNU_BUILD_ID && |
1020 | nhdr.n_namesz == sizeof("GNU")) { | |
1021 | if (read(fd, bf, namesz) != namesz) | |
1022 | break; | |
1023 | if (memcmp(bf, "GNU", sizeof("GNU")) == 0) { | |
1024 | if (read(fd, build_id, | |
1025 | BUILD_ID_SIZE) == BUILD_ID_SIZE) { | |
1026 | err = 0; | |
1027 | break; | |
1028 | } | |
1029 | } else if (read(fd, bf, descsz) != descsz) | |
1030 | break; | |
1031 | } else { | |
1032 | int n = namesz + descsz; | |
1033 | if (read(fd, bf, n) != n) | |
1034 | break; | |
1035 | } | |
1036 | } | |
1037 | close(fd); | |
1038 | out: | |
1039 | return err; | |
1040 | } | |
1041 | ||
94cb9e38 ACM |
1042 | char dso__symtab_origin(const struct dso *self) |
1043 | { | |
1044 | static const char origin[] = { | |
1045 | [DSO__ORIG_KERNEL] = 'k', | |
1046 | [DSO__ORIG_JAVA_JIT] = 'j', | |
1047 | [DSO__ORIG_FEDORA] = 'f', | |
1048 | [DSO__ORIG_UBUNTU] = 'u', | |
1049 | [DSO__ORIG_BUILDID] = 'b', | |
1050 | [DSO__ORIG_DSO] = 'd', | |
439d473b | 1051 | [DSO__ORIG_KMODULE] = 'K', |
94cb9e38 ACM |
1052 | }; |
1053 | ||
1054 | if (self == NULL || self->origin == DSO__ORIG_NOT_FOUND) | |
1055 | return '!'; | |
1056 | return origin[self->origin]; | |
1057 | } | |
1058 | ||
6beba7ad | 1059 | int dso__load(struct dso *self, struct map *map, symbol_filter_t filter) |
a2928c42 | 1060 | { |
4d1e00a8 | 1061 | int size = PATH_MAX; |
c338aee8 | 1062 | char *name; |
d3379ab9 | 1063 | u8 build_id[BUILD_ID_SIZE]; |
a2928c42 ACM |
1064 | int ret = -1; |
1065 | int fd; | |
1066 | ||
8d06367f | 1067 | self->loaded = 1; |
66bd8424 | 1068 | |
c338aee8 ACM |
1069 | if (self->kernel) |
1070 | return dso__load_kernel_sym(self, map, filter); | |
1071 | ||
1072 | name = malloc(size); | |
a2928c42 ACM |
1073 | if (!name) |
1074 | return -1; | |
1075 | ||
30d7a77d | 1076 | self->adjust_symbols = 0; |
f5812a7a | 1077 | |
94cb9e38 | 1078 | if (strncmp(self->name, "/tmp/perf-", 10) == 0) { |
6beba7ad | 1079 | ret = dso__load_perf_map(self, map, filter); |
94cb9e38 ACM |
1080 | self->origin = ret > 0 ? DSO__ORIG_JAVA_JIT : |
1081 | DSO__ORIG_NOT_FOUND; | |
1082 | return ret; | |
1083 | } | |
1084 | ||
1085 | self->origin = DSO__ORIG_FEDORA - 1; | |
80d496be | 1086 | |
a2928c42 ACM |
1087 | more: |
1088 | do { | |
94cb9e38 ACM |
1089 | self->origin++; |
1090 | switch (self->origin) { | |
1091 | case DSO__ORIG_FEDORA: | |
439d473b ACM |
1092 | snprintf(name, size, "/usr/lib/debug%s.debug", |
1093 | self->long_name); | |
a2928c42 | 1094 | break; |
94cb9e38 | 1095 | case DSO__ORIG_UBUNTU: |
439d473b ACM |
1096 | snprintf(name, size, "/usr/lib/debug%s", |
1097 | self->long_name); | |
a2928c42 | 1098 | break; |
94cb9e38 | 1099 | case DSO__ORIG_BUILDID: |
d3379ab9 ACM |
1100 | if (filename__read_build_id(self->long_name, build_id, |
1101 | sizeof(build_id))) { | |
1102 | char build_id_hex[BUILD_ID_SIZE * 2 + 1]; | |
1103 | ||
1104 | build_id__sprintf(build_id, sizeof(build_id), | |
1105 | build_id_hex); | |
4d1e00a8 ACM |
1106 | snprintf(name, size, |
1107 | "/usr/lib/debug/.build-id/%.2s/%s.debug", | |
d3379ab9 ACM |
1108 | build_id_hex, build_id_hex + 2); |
1109 | if (self->has_build_id) | |
1110 | goto compare_build_id; | |
1111 | break; | |
4d1e00a8 | 1112 | } |
94cb9e38 | 1113 | self->origin++; |
4d1e00a8 | 1114 | /* Fall thru */ |
94cb9e38 | 1115 | case DSO__ORIG_DSO: |
439d473b | 1116 | snprintf(name, size, "%s", self->long_name); |
a2928c42 ACM |
1117 | break; |
1118 | ||
1119 | default: | |
1120 | goto out; | |
1121 | } | |
a2928c42 | 1122 | |
8d06367f | 1123 | if (self->has_build_id) { |
d3379ab9 ACM |
1124 | if (filename__read_build_id(name, build_id, |
1125 | sizeof(build_id)) < 0) | |
8d06367f | 1126 | goto more; |
8d06367f | 1127 | compare_build_id: |
78075caa | 1128 | if (!dso__build_id_equal(self, build_id)) |
8d06367f ACM |
1129 | goto more; |
1130 | } | |
1131 | ||
a2928c42 ACM |
1132 | fd = open(name, O_RDONLY); |
1133 | } while (fd < 0); | |
1134 | ||
6beba7ad | 1135 | ret = dso__load_sym(self, map, name, fd, filter, 0, 0); |
a2928c42 ACM |
1136 | close(fd); |
1137 | ||
1138 | /* | |
1139 | * Some people seem to have debuginfo files _WITHOUT_ debug info!?!? | |
1140 | */ | |
1141 | if (!ret) | |
1142 | goto more; | |
1143 | ||
a25e46c4 | 1144 | if (ret > 0) { |
82164161 | 1145 | int nr_plt = dso__synthesize_plt_symbols(self, map, filter); |
a25e46c4 ACM |
1146 | if (nr_plt > 0) |
1147 | ret += nr_plt; | |
1148 | } | |
a2928c42 ACM |
1149 | out: |
1150 | free(name); | |
1340e6bb ACM |
1151 | if (ret < 0 && strstr(self->name, " (deleted)") != NULL) |
1152 | return 0; | |
a2928c42 ACM |
1153 | return ret; |
1154 | } | |
1155 | ||
439d473b ACM |
1156 | struct map *kernel_map; |
1157 | ||
1158 | static void kernel_maps__insert(struct map *map) | |
6cfcc53e | 1159 | { |
439d473b ACM |
1160 | maps__insert(&kernel_maps, map); |
1161 | } | |
6cfcc53e | 1162 | |
c338aee8 ACM |
1163 | struct symbol *kernel_maps__find_symbol(u64 ip, struct map **mapp, |
1164 | symbol_filter_t filter) | |
439d473b | 1165 | { |
439d473b | 1166 | struct map *map = maps__find(&kernel_maps, ip); |
2e538c4a ACM |
1167 | |
1168 | if (mapp) | |
1169 | *mapp = map; | |
439d473b ACM |
1170 | |
1171 | if (map) { | |
1172 | ip = map->map_ip(map, ip); | |
c338aee8 | 1173 | return map__find_symbol(map, ip, filter); |
b32d133a ACM |
1174 | } else |
1175 | WARN_ONCE(RB_EMPTY_ROOT(&kernel_maps), | |
1176 | "Empty kernel_maps, was symbol__init() called?\n"); | |
6cfcc53e | 1177 | |
2e538c4a | 1178 | return NULL; |
439d473b ACM |
1179 | } |
1180 | ||
1181 | struct map *kernel_maps__find_by_dso_name(const char *name) | |
1182 | { | |
1183 | struct rb_node *nd; | |
1184 | ||
1185 | for (nd = rb_first(&kernel_maps); nd; nd = rb_next(nd)) { | |
1186 | struct map *map = rb_entry(nd, struct map, rb_node); | |
1187 | ||
1188 | if (map->dso && strcmp(map->dso->name, name) == 0) | |
1189 | return map; | |
1190 | } | |
1191 | ||
1192 | return NULL; | |
1193 | } | |
1194 | ||
c338aee8 | 1195 | static int dsos__set_modules_path_dir(char *dirname) |
6cfcc53e | 1196 | { |
439d473b | 1197 | struct dirent *dent; |
439d473b | 1198 | DIR *dir = opendir(dirname); |
6cfcc53e | 1199 | |
439d473b | 1200 | if (!dir) { |
87f8ea4c | 1201 | pr_debug("%s: cannot open %s dir\n", __func__, dirname); |
439d473b ACM |
1202 | return -1; |
1203 | } | |
6cfcc53e | 1204 | |
439d473b ACM |
1205 | while ((dent = readdir(dir)) != NULL) { |
1206 | char path[PATH_MAX]; | |
1207 | ||
1208 | if (dent->d_type == DT_DIR) { | |
1209 | if (!strcmp(dent->d_name, ".") || | |
1210 | !strcmp(dent->d_name, "..")) | |
1211 | continue; | |
1212 | ||
1213 | snprintf(path, sizeof(path), "%s/%s", | |
1214 | dirname, dent->d_name); | |
c338aee8 | 1215 | if (dsos__set_modules_path_dir(path) < 0) |
439d473b ACM |
1216 | goto failure; |
1217 | } else { | |
1218 | char *dot = strrchr(dent->d_name, '.'), | |
1219 | dso_name[PATH_MAX]; | |
1220 | struct map *map; | |
cfc10d3b | 1221 | char *long_name; |
439d473b ACM |
1222 | |
1223 | if (dot == NULL || strcmp(dot, ".ko")) | |
1224 | continue; | |
1225 | snprintf(dso_name, sizeof(dso_name), "[%.*s]", | |
1226 | (int)(dot - dent->d_name), dent->d_name); | |
1227 | ||
a2a99e8e | 1228 | strxfrchar(dso_name, '-', '_'); |
439d473b ACM |
1229 | map = kernel_maps__find_by_dso_name(dso_name); |
1230 | if (map == NULL) | |
1231 | continue; | |
1232 | ||
1233 | snprintf(path, sizeof(path), "%s/%s", | |
1234 | dirname, dent->d_name); | |
1235 | ||
cfc10d3b ACM |
1236 | long_name = strdup(path); |
1237 | if (long_name == NULL) | |
439d473b | 1238 | goto failure; |
cfc10d3b | 1239 | dso__set_long_name(map->dso, long_name); |
439d473b | 1240 | } |
439d473b | 1241 | } |
6cfcc53e | 1242 | |
c338aee8 | 1243 | return 0; |
439d473b ACM |
1244 | failure: |
1245 | closedir(dir); | |
1246 | return -1; | |
1247 | } | |
6cfcc53e | 1248 | |
c338aee8 | 1249 | static int dsos__set_modules_path(void) |
439d473b ACM |
1250 | { |
1251 | struct utsname uts; | |
1252 | char modules_path[PATH_MAX]; | |
6cfcc53e | 1253 | |
439d473b ACM |
1254 | if (uname(&uts) < 0) |
1255 | return -1; | |
6cfcc53e | 1256 | |
439d473b ACM |
1257 | snprintf(modules_path, sizeof(modules_path), "/lib/modules/%s/kernel", |
1258 | uts.release); | |
6cfcc53e | 1259 | |
c338aee8 | 1260 | return dsos__set_modules_path_dir(modules_path); |
6cfcc53e MG |
1261 | } |
1262 | ||
439d473b ACM |
1263 | /* |
1264 | * Constructor variant for modules (where we know from /proc/modules where | |
1265 | * they are loaded) and for vmlinux, where only after we load all the | |
1266 | * symbols we'll know where it starts and ends. | |
1267 | */ | |
1268 | static struct map *map__new2(u64 start, struct dso *dso) | |
6cfcc53e | 1269 | { |
439d473b | 1270 | struct map *self = malloc(sizeof(*self)); |
6cfcc53e | 1271 | |
439d473b | 1272 | if (self != NULL) { |
439d473b | 1273 | /* |
afb7b4f0 | 1274 | * ->end will be filled after we load all the symbols |
439d473b | 1275 | */ |
afb7b4f0 | 1276 | map__init(self, start, 0, 0, dso); |
439d473b | 1277 | } |
afb7b4f0 | 1278 | |
439d473b ACM |
1279 | return self; |
1280 | } | |
1281 | ||
c338aee8 | 1282 | static int kernel_maps__create_module_maps(void) |
439d473b ACM |
1283 | { |
1284 | char *line = NULL; | |
1285 | size_t n; | |
1286 | FILE *file = fopen("/proc/modules", "r"); | |
1287 | struct map *map; | |
6cfcc53e | 1288 | |
439d473b ACM |
1289 | if (file == NULL) |
1290 | return -1; | |
6cfcc53e | 1291 | |
439d473b ACM |
1292 | while (!feof(file)) { |
1293 | char name[PATH_MAX]; | |
1294 | u64 start; | |
1295 | struct dso *dso; | |
1296 | char *sep; | |
1297 | int line_len; | |
6cfcc53e | 1298 | |
439d473b ACM |
1299 | line_len = getline(&line, &n, file); |
1300 | if (line_len < 0) | |
1301 | break; | |
1302 | ||
1303 | if (!line) | |
1304 | goto out_failure; | |
1305 | ||
1306 | line[--line_len] = '\0'; /* \n */ | |
1307 | ||
1308 | sep = strrchr(line, 'x'); | |
1309 | if (sep == NULL) | |
1310 | continue; | |
1311 | ||
1312 | hex2u64(sep + 1, &start); | |
1313 | ||
1314 | sep = strchr(line, ' '); | |
1315 | if (sep == NULL) | |
1316 | continue; | |
1317 | ||
1318 | *sep = '\0'; | |
1319 | ||
1320 | snprintf(name, sizeof(name), "[%s]", line); | |
00a192b3 | 1321 | dso = dso__new(name); |
439d473b ACM |
1322 | |
1323 | if (dso == NULL) | |
1324 | goto out_delete_line; | |
1325 | ||
1326 | map = map__new2(start, dso); | |
1327 | if (map == NULL) { | |
1328 | dso__delete(dso); | |
1329 | goto out_delete_line; | |
6cfcc53e | 1330 | } |
439d473b | 1331 | |
f1617b40 ACM |
1332 | snprintf(name, sizeof(name), |
1333 | "/sys/module/%s/notes/.note.gnu.build-id", line); | |
1334 | if (sysfs__read_build_id(name, dso->build_id, | |
1335 | sizeof(dso->build_id)) == 0) | |
1336 | dso->has_build_id = true; | |
1337 | ||
439d473b ACM |
1338 | dso->origin = DSO__ORIG_KMODULE; |
1339 | kernel_maps__insert(map); | |
1340 | dsos__add(dso); | |
6cfcc53e | 1341 | } |
439d473b ACM |
1342 | |
1343 | free(line); | |
1344 | fclose(file); | |
1345 | ||
c338aee8 | 1346 | return dsos__set_modules_path(); |
439d473b ACM |
1347 | |
1348 | out_delete_line: | |
1349 | free(line); | |
1350 | out_failure: | |
1351 | return -1; | |
6cfcc53e MG |
1352 | } |
1353 | ||
439d473b | 1354 | static int dso__load_vmlinux(struct dso *self, struct map *map, |
6beba7ad | 1355 | const char *vmlinux, symbol_filter_t filter) |
a2928c42 | 1356 | { |
fbd733b8 | 1357 | int err = -1, fd; |
a2928c42 | 1358 | |
fbd733b8 ACM |
1359 | if (self->has_build_id) { |
1360 | u8 build_id[BUILD_ID_SIZE]; | |
1361 | ||
1362 | if (filename__read_build_id(vmlinux, build_id, | |
1363 | sizeof(build_id)) < 0) { | |
1364 | pr_debug("No build_id in %s, ignoring it\n", vmlinux); | |
1365 | return -1; | |
1366 | } | |
1367 | if (!dso__build_id_equal(self, build_id)) { | |
1368 | char expected_build_id[BUILD_ID_SIZE * 2 + 1], | |
1369 | vmlinux_build_id[BUILD_ID_SIZE * 2 + 1]; | |
1370 | ||
1371 | build_id__sprintf(self->build_id, | |
1372 | sizeof(self->build_id), | |
1373 | expected_build_id); | |
1374 | build_id__sprintf(build_id, sizeof(build_id), | |
1375 | vmlinux_build_id); | |
1376 | pr_debug("build_id in %s is %s while expected is %s, " | |
1377 | "ignoring it\n", vmlinux, vmlinux_build_id, | |
1378 | expected_build_id); | |
1379 | return -1; | |
1380 | } | |
1381 | } | |
66bd8424 | 1382 | |
fbd733b8 | 1383 | fd = open(vmlinux, O_RDONLY); |
a2928c42 ACM |
1384 | if (fd < 0) |
1385 | return -1; | |
1386 | ||
fbd733b8 | 1387 | self->loaded = 1; |
6beba7ad | 1388 | err = dso__load_sym(self, map, self->long_name, fd, filter, 1, 0); |
6cfcc53e | 1389 | |
a2928c42 ACM |
1390 | close(fd); |
1391 | ||
1392 | return err; | |
1393 | } | |
1394 | ||
c338aee8 ACM |
1395 | static int dso__load_kernel_sym(struct dso *self, struct map *map, |
1396 | symbol_filter_t filter) | |
a827c875 | 1397 | { |
cc612d81 ACM |
1398 | int err; |
1399 | bool is_kallsyms; | |
1400 | ||
1401 | if (vmlinux_path != NULL) { | |
1402 | int i; | |
1403 | pr_debug("Looking at the vmlinux_path (%d entries long)\n", | |
1404 | vmlinux_path__nr_entries); | |
1405 | for (i = 0; i < vmlinux_path__nr_entries; ++i) { | |
1406 | err = dso__load_vmlinux(self, map, vmlinux_path[i], | |
1407 | filter); | |
1408 | if (err > 0) { | |
1409 | pr_debug("Using %s for symbols\n", | |
1410 | vmlinux_path[i]); | |
1411 | dso__set_long_name(self, | |
1412 | strdup(vmlinux_path[i])); | |
1413 | goto out_fixup; | |
1414 | } | |
1415 | } | |
1416 | } | |
1417 | ||
1418 | is_kallsyms = self->long_name[0] == '['; | |
1419 | if (is_kallsyms) | |
1420 | goto do_kallsyms; | |
439d473b | 1421 | |
cc612d81 | 1422 | err = dso__load_vmlinux(self, map, self->long_name, filter); |
ef6ae724 | 1423 | if (err <= 0) { |
cc612d81 ACM |
1424 | pr_info("The file %s cannot be used, " |
1425 | "trying to use /proc/kallsyms...", self->long_name); | |
1426 | sleep(2); | |
1427 | do_kallsyms: | |
c338aee8 | 1428 | err = kernel_maps__load_kallsyms(filter); |
cc612d81 | 1429 | if (err > 0 && !is_kallsyms) |
ef6ae724 ACM |
1430 | dso__set_long_name(self, strdup("[kernel.kallsyms]")); |
1431 | } | |
439d473b ACM |
1432 | |
1433 | if (err > 0) { | |
cc612d81 | 1434 | out_fixup: |
c338aee8 ACM |
1435 | map__fixup_start(map); |
1436 | map__fixup_end(map); | |
439d473b | 1437 | } |
94cb9e38 | 1438 | |
a827c875 ACM |
1439 | return err; |
1440 | } | |
1441 | ||
cd84c2ac | 1442 | LIST_HEAD(dsos); |
cc612d81 | 1443 | struct dso *vdso; |
cd84c2ac FW |
1444 | |
1445 | static void dsos__add(struct dso *dso) | |
1446 | { | |
1447 | list_add_tail(&dso->node, &dsos); | |
1448 | } | |
1449 | ||
1450 | static struct dso *dsos__find(const char *name) | |
1451 | { | |
1452 | struct dso *pos; | |
1453 | ||
1454 | list_for_each_entry(pos, &dsos, node) | |
1455 | if (strcmp(pos->name, name) == 0) | |
1456 | return pos; | |
1457 | return NULL; | |
1458 | } | |
1459 | ||
00a192b3 | 1460 | struct dso *dsos__findnew(const char *name) |
cd84c2ac FW |
1461 | { |
1462 | struct dso *dso = dsos__find(name); | |
cd84c2ac | 1463 | |
e4204992 | 1464 | if (!dso) { |
00a192b3 | 1465 | dso = dso__new(name); |
cfc10d3b | 1466 | if (dso != NULL) { |
e4204992 | 1467 | dsos__add(dso); |
cfc10d3b ACM |
1468 | dso__set_basename(dso); |
1469 | } | |
66bd8424 | 1470 | } |
cd84c2ac FW |
1471 | |
1472 | return dso; | |
cd84c2ac FW |
1473 | } |
1474 | ||
1475 | void dsos__fprintf(FILE *fp) | |
1476 | { | |
1477 | struct dso *pos; | |
1478 | ||
1479 | list_for_each_entry(pos, &dsos, node) | |
1480 | dso__fprintf(pos, fp); | |
1481 | } | |
1482 | ||
9e03eb2d ACM |
1483 | size_t dsos__fprintf_buildid(FILE *fp) |
1484 | { | |
1485 | struct dso *pos; | |
1486 | size_t ret = 0; | |
1487 | ||
1488 | list_for_each_entry(pos, &dsos, node) { | |
1489 | ret += dso__fprintf_buildid(pos, fp); | |
1124ba73 | 1490 | ret += fprintf(fp, " %s\n", pos->long_name); |
9e03eb2d ACM |
1491 | } |
1492 | return ret; | |
1493 | } | |
1494 | ||
b32d133a | 1495 | static int kernel_maps__create_kernel_map(const struct symbol_conf *conf) |
cd84c2ac | 1496 | { |
b32d133a | 1497 | struct dso *kernel = dso__new(conf->vmlinux_name ?: "[kernel.kallsyms]"); |
cd84c2ac | 1498 | |
2446042c | 1499 | if (kernel == NULL) |
c338aee8 ACM |
1500 | return -1; |
1501 | ||
1502 | kernel_map = map__new2(0, kernel); | |
1503 | if (kernel_map == NULL) | |
1504 | goto out_delete_kernel_dso; | |
1505 | ||
cc612d81 ACM |
1506 | kernel_map->map_ip = kernel_map->unmap_ip = identity__map_ip; |
1507 | kernel->short_name = "[kernel]"; | |
1508 | kernel->kernel = 1; | |
2446042c | 1509 | |
00a192b3 | 1510 | vdso = dso__new("[vdso]"); |
c338aee8 ACM |
1511 | if (vdso == NULL) |
1512 | goto out_delete_kernel_map; | |
2446042c ACM |
1513 | |
1514 | if (sysfs__read_build_id("/sys/kernel/notes", kernel->build_id, | |
1515 | sizeof(kernel->build_id)) == 0) | |
1516 | kernel->has_build_id = true; | |
cd84c2ac | 1517 | |
c338aee8 | 1518 | kernel_maps__insert(kernel_map); |
2446042c | 1519 | dsos__add(kernel); |
cd84c2ac FW |
1520 | dsos__add(vdso); |
1521 | ||
c338aee8 ACM |
1522 | return 0; |
1523 | ||
1524 | out_delete_kernel_map: | |
1525 | map__delete(kernel_map); | |
1526 | kernel_map = NULL; | |
1527 | out_delete_kernel_dso: | |
1528 | dso__delete(kernel); | |
1529 | return -1; | |
2446042c ACM |
1530 | } |
1531 | ||
cc612d81 ACM |
1532 | static void vmlinux_path__exit(void) |
1533 | { | |
1534 | while (--vmlinux_path__nr_entries >= 0) { | |
1535 | free(vmlinux_path[vmlinux_path__nr_entries]); | |
1536 | vmlinux_path[vmlinux_path__nr_entries] = NULL; | |
1537 | } | |
1538 | ||
1539 | free(vmlinux_path); | |
1540 | vmlinux_path = NULL; | |
1541 | } | |
1542 | ||
1543 | static int vmlinux_path__init(void) | |
1544 | { | |
1545 | struct utsname uts; | |
1546 | char bf[PATH_MAX]; | |
1547 | ||
1548 | if (uname(&uts) < 0) | |
1549 | return -1; | |
1550 | ||
1551 | vmlinux_path = malloc(sizeof(char *) * 5); | |
1552 | if (vmlinux_path == NULL) | |
1553 | return -1; | |
1554 | ||
1555 | vmlinux_path[vmlinux_path__nr_entries] = strdup("vmlinux"); | |
1556 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
1557 | goto out_fail; | |
1558 | ++vmlinux_path__nr_entries; | |
1559 | vmlinux_path[vmlinux_path__nr_entries] = strdup("/boot/vmlinux"); | |
1560 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
1561 | goto out_fail; | |
1562 | ++vmlinux_path__nr_entries; | |
1563 | snprintf(bf, sizeof(bf), "/boot/vmlinux-%s", uts.release); | |
1564 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); | |
1565 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
1566 | goto out_fail; | |
1567 | ++vmlinux_path__nr_entries; | |
1568 | snprintf(bf, sizeof(bf), "/lib/modules/%s/build/vmlinux", uts.release); | |
1569 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); | |
1570 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
1571 | goto out_fail; | |
1572 | ++vmlinux_path__nr_entries; | |
1573 | snprintf(bf, sizeof(bf), "/usr/lib/debug/lib/modules/%s/vmlinux", | |
1574 | uts.release); | |
1575 | vmlinux_path[vmlinux_path__nr_entries] = strdup(bf); | |
1576 | if (vmlinux_path[vmlinux_path__nr_entries] == NULL) | |
1577 | goto out_fail; | |
1578 | ++vmlinux_path__nr_entries; | |
1579 | ||
1580 | return 0; | |
1581 | ||
1582 | out_fail: | |
1583 | vmlinux_path__exit(); | |
1584 | return -1; | |
1585 | } | |
1586 | ||
b32d133a | 1587 | static int kernel_maps__init(const struct symbol_conf *conf) |
2446042c | 1588 | { |
b32d133a ACM |
1589 | const struct symbol_conf *pconf = conf ?: &symbol_conf__defaults; |
1590 | ||
1591 | symbol__priv_size = pconf->priv_size; | |
1592 | ||
1593 | if (pconf->try_vmlinux_path && vmlinux_path__init() < 0) | |
2446042c ACM |
1594 | return -1; |
1595 | ||
b32d133a | 1596 | if (kernel_maps__create_kernel_map(pconf) < 0) { |
cc612d81 ACM |
1597 | vmlinux_path__exit(); |
1598 | return -1; | |
1599 | } | |
1600 | ||
b32d133a | 1601 | if (pconf->use_modules && kernel_maps__create_module_maps() < 0) |
87f8ea4c ACM |
1602 | pr_debug("Failed to load list of modules in use, " |
1603 | "continuing...\n"); | |
90c83218 ACM |
1604 | /* |
1605 | * Now that we have all the maps created, just set the ->end of them: | |
1606 | */ | |
1607 | kernel_maps__fixup_end(); | |
6671cb16 | 1608 | return 0; |
cd84c2ac FW |
1609 | } |
1610 | ||
b32d133a | 1611 | int symbol__init(struct symbol_conf *conf) |
a2928c42 ACM |
1612 | { |
1613 | elf_version(EV_CURRENT); | |
b32d133a | 1614 | return kernel_maps__init(conf); |
a2928c42 | 1615 | } |