Commit | Line | Data |
---|---|---|
66e274f3 | 1 | #include "symbol.h" |
c6e718ff | 2 | #include <errno.h> |
9486aa38 | 3 | #include <inttypes.h> |
4b8cf846 | 4 | #include <limits.h> |
66e274f3 FW |
5 | #include <stdlib.h> |
6 | #include <string.h> | |
7 | #include <stdio.h> | |
a1645ce1 | 8 | #include <unistd.h> |
4b8cf846 | 9 | #include "map.h" |
5cd95c2d | 10 | #include "thread.h" |
c80c3c26 | 11 | #include "strlist.h" |
7dbf4dcf | 12 | #include "vdso.h" |
ebb296c2 | 13 | #include "build-id.h" |
8e16017d | 14 | #include <linux/string.h> |
66e274f3 | 15 | |
3846df2e ACM |
16 | const char *map_type__name[MAP__NR_TYPES] = { |
17 | [MAP__FUNCTION] = "Functions", | |
18 | [MAP__VARIABLE] = "Variables", | |
19 | }; | |
20 | ||
66e274f3 FW |
21 | static inline int is_anon_memory(const char *filename) |
22 | { | |
d0528b5d | 23 | return !strcmp(filename, "//anon") || |
89365e6c | 24 | !strcmp(filename, "/dev/zero (deleted)") || |
d0528b5d | 25 | !strcmp(filename, "/anon_hugepage (deleted)"); |
66e274f3 FW |
26 | } |
27 | ||
87ffef79 JO |
28 | static inline int is_no_dso_memory(const char *filename) |
29 | { | |
1e82574d | 30 | return !strncmp(filename, "[stack", 6) || |
87ffef79 JO |
31 | !strcmp(filename, "[heap]"); |
32 | } | |
33 | ||
237a7e04 | 34 | void map__init(struct map *map, enum map_type type, |
3610583c | 35 | u64 start, u64 end, u64 pgoff, struct dso *dso) |
afb7b4f0 | 36 | { |
237a7e04 ACM |
37 | map->type = type; |
38 | map->start = start; | |
39 | map->end = end; | |
40 | map->pgoff = pgoff; | |
41 | map->dso = dso; | |
42 | map->map_ip = map__map_ip; | |
43 | map->unmap_ip = map__unmap_ip; | |
44 | RB_CLEAR_NODE(&map->rb_node); | |
45 | map->groups = NULL; | |
46 | map->referenced = false; | |
47 | map->erange_warned = false; | |
afb7b4f0 ACM |
48 | } |
49 | ||
a1645ce1 | 50 | struct map *map__new(struct list_head *dsos__list, u64 start, u64 len, |
5c5e854b SE |
51 | u64 pgoff, u32 pid, u32 d_maj, u32 d_min, u64 ino, |
52 | u64 ino_gen, char *filename, | |
361d1346 | 53 | enum map_type type) |
66e274f3 | 54 | { |
237a7e04 | 55 | struct map *map = malloc(sizeof(*map)); |
66e274f3 | 56 | |
237a7e04 | 57 | if (map != NULL) { |
66e274f3 | 58 | char newfilename[PATH_MAX]; |
afb7b4f0 | 59 | struct dso *dso; |
7dbf4dcf | 60 | int anon, no_dso, vdso; |
66e274f3 | 61 | |
66e274f3 | 62 | anon = is_anon_memory(filename); |
7dbf4dcf | 63 | vdso = is_vdso_map(filename); |
87ffef79 | 64 | no_dso = is_no_dso_memory(filename); |
66e274f3 | 65 | |
5c5e854b SE |
66 | map->maj = d_maj; |
67 | map->min = d_min; | |
68 | map->ino = ino; | |
69 | map->ino_generation = ino_gen; | |
70 | ||
66e274f3 | 71 | if (anon) { |
b177f63f | 72 | snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", pid); |
66e274f3 FW |
73 | filename = newfilename; |
74 | } | |
75 | ||
7dbf4dcf JO |
76 | if (vdso) { |
77 | pgoff = 0; | |
78 | dso = vdso__dso_findnew(dsos__list); | |
79 | } else | |
80 | dso = __dsos__findnew(dsos__list, filename); | |
81 | ||
afb7b4f0 | 82 | if (dso == NULL) |
66e274f3 FW |
83 | goto out_delete; |
84 | ||
237a7e04 | 85 | map__init(map, type, start, start + len, pgoff, dso); |
afb7b4f0 | 86 | |
87ffef79 | 87 | if (anon || no_dso) { |
237a7e04 | 88 | map->map_ip = map->unmap_ip = identity__map_ip; |
87ffef79 JO |
89 | |
90 | /* | |
91 | * Set memory without DSO as loaded. All map__find_* | |
92 | * functions still return NULL, and we avoid the | |
93 | * unnecessary map__load warning. | |
94 | */ | |
95 | if (no_dso) | |
237a7e04 | 96 | dso__set_loaded(dso, map->type); |
8d92c02a | 97 | } |
66e274f3 | 98 | } |
237a7e04 | 99 | return map; |
66e274f3 | 100 | out_delete: |
237a7e04 | 101 | free(map); |
66e274f3 FW |
102 | return NULL; |
103 | } | |
104 | ||
e5a1845f NK |
105 | /* |
106 | * Constructor variant for modules (where we know from /proc/modules where | |
107 | * they are loaded) and for vmlinux, where only after we load all the | |
108 | * symbols we'll know where it starts and ends. | |
109 | */ | |
110 | struct map *map__new2(u64 start, struct dso *dso, enum map_type type) | |
111 | { | |
112 | struct map *map = calloc(1, (sizeof(*map) + | |
113 | (dso->kernel ? sizeof(struct kmap) : 0))); | |
114 | if (map != NULL) { | |
115 | /* | |
116 | * ->end will be filled after we load all the symbols | |
117 | */ | |
118 | map__init(map, type, start, 0, 0, dso); | |
119 | } | |
120 | ||
121 | return map; | |
122 | } | |
123 | ||
237a7e04 | 124 | void map__delete(struct map *map) |
c338aee8 | 125 | { |
237a7e04 | 126 | free(map); |
c338aee8 ACM |
127 | } |
128 | ||
237a7e04 | 129 | void map__fixup_start(struct map *map) |
c338aee8 | 130 | { |
237a7e04 | 131 | struct rb_root *symbols = &map->dso->symbols[map->type]; |
fcf1203a | 132 | struct rb_node *nd = rb_first(symbols); |
c338aee8 ACM |
133 | if (nd != NULL) { |
134 | struct symbol *sym = rb_entry(nd, struct symbol, rb_node); | |
237a7e04 | 135 | map->start = sym->start; |
c338aee8 ACM |
136 | } |
137 | } | |
138 | ||
237a7e04 | 139 | void map__fixup_end(struct map *map) |
c338aee8 | 140 | { |
237a7e04 | 141 | struct rb_root *symbols = &map->dso->symbols[map->type]; |
fcf1203a | 142 | struct rb_node *nd = rb_last(symbols); |
c338aee8 ACM |
143 | if (nd != NULL) { |
144 | struct symbol *sym = rb_entry(nd, struct symbol, rb_node); | |
237a7e04 | 145 | map->end = sym->end; |
c338aee8 ACM |
146 | } |
147 | } | |
148 | ||
d70a5402 ACM |
149 | #define DSO__DELETED "(deleted)" |
150 | ||
237a7e04 | 151 | int map__load(struct map *map, symbol_filter_t filter) |
66bd8424 | 152 | { |
237a7e04 | 153 | const char *name = map->dso->long_name; |
a128168d | 154 | int nr; |
79406cd7 | 155 | |
237a7e04 | 156 | if (dso__loaded(map->dso, map->type)) |
a128168d MH |
157 | return 0; |
158 | ||
237a7e04 | 159 | nr = dso__load(map->dso, map, filter); |
79406cd7 | 160 | if (nr < 0) { |
237a7e04 | 161 | if (map->dso->has_build_id) { |
79406cd7 ACM |
162 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; |
163 | ||
237a7e04 ACM |
164 | build_id__sprintf(map->dso->build_id, |
165 | sizeof(map->dso->build_id), | |
79406cd7 ACM |
166 | sbuild_id); |
167 | pr_warning("%s with build id %s not found", | |
168 | name, sbuild_id); | |
169 | } else | |
170 | pr_warning("Failed to open %s", name); | |
171 | ||
172 | pr_warning(", continuing without symbols\n"); | |
173 | return -1; | |
174 | } else if (nr == 0) { | |
29a0fc9b | 175 | #ifdef LIBELF_SUPPORT |
79406cd7 ACM |
176 | const size_t len = strlen(name); |
177 | const size_t real_len = len - sizeof(DSO__DELETED); | |
178 | ||
179 | if (len > sizeof(DSO__DELETED) && | |
180 | strcmp(name + real_len + 1, DSO__DELETED) == 0) { | |
e77b15bd DA |
181 | pr_warning("%.*s was updated (is prelink enabled?). " |
182 | "Restart the long running apps that use it!\n", | |
79406cd7 ACM |
183 | (int)real_len, name); |
184 | } else { | |
185 | pr_warning("no symbols found in %s, maybe install " | |
186 | "a debug package?\n", name); | |
66bd8424 | 187 | } |
393be2e3 | 188 | #endif |
79406cd7 | 189 | return -1; |
66bd8424 ACM |
190 | } |
191 | ||
79406cd7 ACM |
192 | return 0; |
193 | } | |
194 | ||
237a7e04 | 195 | struct symbol *map__find_symbol(struct map *map, u64 addr, |
9de89fe7 | 196 | symbol_filter_t filter) |
79406cd7 | 197 | { |
237a7e04 | 198 | if (map__load(map, filter) < 0) |
79406cd7 ACM |
199 | return NULL; |
200 | ||
237a7e04 | 201 | return dso__find_symbol(map->dso, map->type, addr); |
66bd8424 ACM |
202 | } |
203 | ||
237a7e04 | 204 | struct symbol *map__find_symbol_by_name(struct map *map, const char *name, |
79406cd7 ACM |
205 | symbol_filter_t filter) |
206 | { | |
237a7e04 | 207 | if (map__load(map, filter) < 0) |
79406cd7 ACM |
208 | return NULL; |
209 | ||
237a7e04 ACM |
210 | if (!dso__sorted_by_name(map->dso, map->type)) |
211 | dso__sort_by_name(map->dso, map->type); | |
79406cd7 | 212 | |
237a7e04 | 213 | return dso__find_symbol_by_name(map->dso, map->type, name); |
79406cd7 ACM |
214 | } |
215 | ||
237a7e04 | 216 | struct map *map__clone(struct map *map) |
66e274f3 | 217 | { |
8e16017d | 218 | return memdup(map, sizeof(*map)); |
66e274f3 FW |
219 | } |
220 | ||
221 | int map__overlap(struct map *l, struct map *r) | |
222 | { | |
223 | if (l->start > r->start) { | |
224 | struct map *t = l; | |
225 | l = r; | |
226 | r = t; | |
227 | } | |
228 | ||
229 | if (l->end > r->start) | |
230 | return 1; | |
231 | ||
232 | return 0; | |
233 | } | |
234 | ||
237a7e04 | 235 | size_t map__fprintf(struct map *map, FILE *fp) |
66e274f3 | 236 | { |
9486aa38 | 237 | return fprintf(fp, " %" PRIx64 "-%" PRIx64 " %" PRIx64 " %s\n", |
237a7e04 | 238 | map->start, map->end, map->pgoff, map->dso->name); |
66e274f3 | 239 | } |
7a2b6209 | 240 | |
547a92e0 AN |
241 | size_t map__fprintf_dsoname(struct map *map, FILE *fp) |
242 | { | |
8f28f19a | 243 | const char *dsoname = "[unknown]"; |
547a92e0 | 244 | |
0bc8d205 AN |
245 | if (map && map->dso && (map->dso->name || map->dso->long_name)) { |
246 | if (symbol_conf.show_kernel_path && map->dso->long_name) | |
247 | dsoname = map->dso->long_name; | |
248 | else if (map->dso->name) | |
249 | dsoname = map->dso->name; | |
8f28f19a | 250 | } |
547a92e0 AN |
251 | |
252 | return fprintf(fp, "%s", dsoname); | |
253 | } | |
254 | ||
7a2b6209 KS |
255 | /* |
256 | * objdump wants/reports absolute IPs for ET_EXEC, and RIPs for ET_DYN. | |
0131c4ec AH |
257 | * map->dso->adjust_symbols==1 for ET_EXEC-like cases except ET_REL which is |
258 | * relative to section start. | |
7a2b6209 KS |
259 | */ |
260 | u64 map__rip_2objdump(struct map *map, u64 rip) | |
261 | { | |
0131c4ec AH |
262 | if (!map->dso->adjust_symbols) |
263 | return rip; | |
264 | ||
265 | if (map->dso->rel) | |
266 | return rip - map->pgoff; | |
267 | ||
268 | return map->unmap_ip(map, rip); | |
7a2b6209 | 269 | } |
ee11b90b | 270 | |
98dfd55d | 271 | void map_groups__init(struct map_groups *mg) |
c6e718ff ACM |
272 | { |
273 | int i; | |
274 | for (i = 0; i < MAP__NR_TYPES; ++i) { | |
98dfd55d ACM |
275 | mg->maps[i] = RB_ROOT; |
276 | INIT_LIST_HEAD(&mg->removed_maps[i]); | |
c6e718ff | 277 | } |
98dfd55d | 278 | mg->machine = NULL; |
c6e718ff ACM |
279 | } |
280 | ||
98dfd55d | 281 | static void maps__delete(struct rb_root *maps) |
591765fd | 282 | { |
98dfd55d | 283 | struct rb_node *next = rb_first(maps); |
591765fd ACM |
284 | |
285 | while (next) { | |
286 | struct map *pos = rb_entry(next, struct map, rb_node); | |
287 | ||
288 | next = rb_next(&pos->rb_node); | |
98dfd55d | 289 | rb_erase(&pos->rb_node, maps); |
591765fd ACM |
290 | map__delete(pos); |
291 | } | |
292 | } | |
293 | ||
98dfd55d | 294 | static void maps__delete_removed(struct list_head *maps) |
591765fd ACM |
295 | { |
296 | struct map *pos, *n; | |
297 | ||
98dfd55d | 298 | list_for_each_entry_safe(pos, n, maps, node) { |
591765fd ACM |
299 | list_del(&pos->node); |
300 | map__delete(pos); | |
301 | } | |
302 | } | |
303 | ||
98dfd55d | 304 | void map_groups__exit(struct map_groups *mg) |
591765fd ACM |
305 | { |
306 | int i; | |
307 | ||
308 | for (i = 0; i < MAP__NR_TYPES; ++i) { | |
98dfd55d ACM |
309 | maps__delete(&mg->maps[i]); |
310 | maps__delete_removed(&mg->removed_maps[i]); | |
591765fd ACM |
311 | } |
312 | } | |
313 | ||
98dfd55d | 314 | void map_groups__flush(struct map_groups *mg) |
c6e718ff ACM |
315 | { |
316 | int type; | |
317 | ||
318 | for (type = 0; type < MAP__NR_TYPES; type++) { | |
98dfd55d | 319 | struct rb_root *root = &mg->maps[type]; |
c6e718ff ACM |
320 | struct rb_node *next = rb_first(root); |
321 | ||
322 | while (next) { | |
323 | struct map *pos = rb_entry(next, struct map, rb_node); | |
324 | next = rb_next(&pos->rb_node); | |
325 | rb_erase(&pos->rb_node, root); | |
326 | /* | |
327 | * We may have references to this map, for | |
328 | * instance in some hist_entry instances, so | |
329 | * just move them to a separate list. | |
330 | */ | |
98dfd55d | 331 | list_add_tail(&pos->node, &mg->removed_maps[pos->type]); |
c6e718ff ACM |
332 | } |
333 | } | |
334 | } | |
335 | ||
98dfd55d | 336 | struct symbol *map_groups__find_symbol(struct map_groups *mg, |
4b8cf846 | 337 | enum map_type type, u64 addr, |
7e5e1b14 | 338 | struct map **mapp, |
4b8cf846 ACM |
339 | symbol_filter_t filter) |
340 | { | |
98dfd55d | 341 | struct map *map = map_groups__find(mg, type, addr); |
4b8cf846 | 342 | |
7e5e1b14 ACM |
343 | if (map != NULL) { |
344 | if (mapp != NULL) | |
345 | *mapp = map; | |
4b8cf846 | 346 | return map__find_symbol(map, map->map_ip(map, addr), filter); |
7e5e1b14 ACM |
347 | } |
348 | ||
349 | return NULL; | |
350 | } | |
351 | ||
98dfd55d | 352 | struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg, |
7e5e1b14 ACM |
353 | enum map_type type, |
354 | const char *name, | |
355 | struct map **mapp, | |
356 | symbol_filter_t filter) | |
357 | { | |
358 | struct rb_node *nd; | |
359 | ||
98dfd55d | 360 | for (nd = rb_first(&mg->maps[type]); nd; nd = rb_next(nd)) { |
7e5e1b14 ACM |
361 | struct map *pos = rb_entry(nd, struct map, rb_node); |
362 | struct symbol *sym = map__find_symbol_by_name(pos, name, filter); | |
363 | ||
364 | if (sym == NULL) | |
365 | continue; | |
366 | if (mapp != NULL) | |
367 | *mapp = pos; | |
368 | return sym; | |
369 | } | |
4b8cf846 ACM |
370 | |
371 | return NULL; | |
372 | } | |
373 | ||
98dfd55d | 374 | size_t __map_groups__fprintf_maps(struct map_groups *mg, |
c6e718ff ACM |
375 | enum map_type type, int verbose, FILE *fp) |
376 | { | |
377 | size_t printed = fprintf(fp, "%s:\n", map_type__name[type]); | |
378 | struct rb_node *nd; | |
379 | ||
98dfd55d | 380 | for (nd = rb_first(&mg->maps[type]); nd; nd = rb_next(nd)) { |
c6e718ff ACM |
381 | struct map *pos = rb_entry(nd, struct map, rb_node); |
382 | printed += fprintf(fp, "Map:"); | |
383 | printed += map__fprintf(pos, fp); | |
384 | if (verbose > 2) { | |
385 | printed += dso__fprintf(pos->dso, type, fp); | |
386 | printed += fprintf(fp, "--\n"); | |
387 | } | |
388 | } | |
389 | ||
390 | return printed; | |
391 | } | |
392 | ||
98dfd55d | 393 | size_t map_groups__fprintf_maps(struct map_groups *mg, int verbose, FILE *fp) |
c6e718ff ACM |
394 | { |
395 | size_t printed = 0, i; | |
396 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
98dfd55d | 397 | printed += __map_groups__fprintf_maps(mg, i, verbose, fp); |
c6e718ff ACM |
398 | return printed; |
399 | } | |
400 | ||
98dfd55d | 401 | static size_t __map_groups__fprintf_removed_maps(struct map_groups *mg, |
c6e718ff ACM |
402 | enum map_type type, |
403 | int verbose, FILE *fp) | |
404 | { | |
405 | struct map *pos; | |
406 | size_t printed = 0; | |
407 | ||
98dfd55d | 408 | list_for_each_entry(pos, &mg->removed_maps[type], node) { |
c6e718ff ACM |
409 | printed += fprintf(fp, "Map:"); |
410 | printed += map__fprintf(pos, fp); | |
411 | if (verbose > 1) { | |
412 | printed += dso__fprintf(pos->dso, type, fp); | |
413 | printed += fprintf(fp, "--\n"); | |
414 | } | |
415 | } | |
416 | return printed; | |
417 | } | |
418 | ||
98dfd55d | 419 | static size_t map_groups__fprintf_removed_maps(struct map_groups *mg, |
c6e718ff ACM |
420 | int verbose, FILE *fp) |
421 | { | |
422 | size_t printed = 0, i; | |
423 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
98dfd55d | 424 | printed += __map_groups__fprintf_removed_maps(mg, i, verbose, fp); |
c6e718ff ACM |
425 | return printed; |
426 | } | |
427 | ||
98dfd55d | 428 | size_t map_groups__fprintf(struct map_groups *mg, int verbose, FILE *fp) |
c6e718ff | 429 | { |
98dfd55d | 430 | size_t printed = map_groups__fprintf_maps(mg, verbose, fp); |
c6e718ff | 431 | printed += fprintf(fp, "Removed maps:\n"); |
98dfd55d | 432 | return printed + map_groups__fprintf_removed_maps(mg, verbose, fp); |
c6e718ff ACM |
433 | } |
434 | ||
98dfd55d | 435 | int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map, |
c6e718ff ACM |
436 | int verbose, FILE *fp) |
437 | { | |
98dfd55d | 438 | struct rb_root *root = &mg->maps[map->type]; |
c6e718ff | 439 | struct rb_node *next = rb_first(root); |
0a1eae39 | 440 | int err = 0; |
c6e718ff ACM |
441 | |
442 | while (next) { | |
443 | struct map *pos = rb_entry(next, struct map, rb_node); | |
444 | next = rb_next(&pos->rb_node); | |
445 | ||
446 | if (!map__overlap(pos, map)) | |
447 | continue; | |
448 | ||
449 | if (verbose >= 2) { | |
450 | fputs("overlapping maps:\n", fp); | |
451 | map__fprintf(map, fp); | |
452 | map__fprintf(pos, fp); | |
453 | } | |
454 | ||
455 | rb_erase(&pos->rb_node, root); | |
c6e718ff ACM |
456 | /* |
457 | * Now check if we need to create new maps for areas not | |
458 | * overlapped by the new map: | |
459 | */ | |
460 | if (map->start > pos->start) { | |
461 | struct map *before = map__clone(pos); | |
462 | ||
0a1eae39 ACM |
463 | if (before == NULL) { |
464 | err = -ENOMEM; | |
465 | goto move_map; | |
466 | } | |
c6e718ff ACM |
467 | |
468 | before->end = map->start - 1; | |
98dfd55d | 469 | map_groups__insert(mg, before); |
c6e718ff ACM |
470 | if (verbose >= 2) |
471 | map__fprintf(before, fp); | |
472 | } | |
473 | ||
474 | if (map->end < pos->end) { | |
475 | struct map *after = map__clone(pos); | |
476 | ||
0a1eae39 ACM |
477 | if (after == NULL) { |
478 | err = -ENOMEM; | |
479 | goto move_map; | |
480 | } | |
c6e718ff ACM |
481 | |
482 | after->start = map->end + 1; | |
98dfd55d | 483 | map_groups__insert(mg, after); |
c6e718ff ACM |
484 | if (verbose >= 2) |
485 | map__fprintf(after, fp); | |
486 | } | |
0a1eae39 ACM |
487 | move_map: |
488 | /* | |
489 | * If we have references, just move them to a separate list. | |
490 | */ | |
491 | if (pos->referenced) | |
98dfd55d | 492 | list_add_tail(&pos->node, &mg->removed_maps[map->type]); |
0a1eae39 ACM |
493 | else |
494 | map__delete(pos); | |
495 | ||
496 | if (err) | |
497 | return err; | |
c6e718ff ACM |
498 | } |
499 | ||
500 | return 0; | |
501 | } | |
502 | ||
503 | /* | |
504 | * XXX This should not really _copy_ te maps, but refcount them. | |
505 | */ | |
98dfd55d | 506 | int map_groups__clone(struct map_groups *mg, |
c6e718ff ACM |
507 | struct map_groups *parent, enum map_type type) |
508 | { | |
509 | struct rb_node *nd; | |
510 | for (nd = rb_first(&parent->maps[type]); nd; nd = rb_next(nd)) { | |
511 | struct map *map = rb_entry(nd, struct map, rb_node); | |
512 | struct map *new = map__clone(map); | |
513 | if (new == NULL) | |
514 | return -ENOMEM; | |
98dfd55d | 515 | map_groups__insert(mg, new); |
c6e718ff ACM |
516 | } |
517 | return 0; | |
518 | } | |
519 | ||
4b8cf846 ACM |
520 | void maps__insert(struct rb_root *maps, struct map *map) |
521 | { | |
522 | struct rb_node **p = &maps->rb_node; | |
523 | struct rb_node *parent = NULL; | |
524 | const u64 ip = map->start; | |
525 | struct map *m; | |
526 | ||
527 | while (*p != NULL) { | |
528 | parent = *p; | |
529 | m = rb_entry(parent, struct map, rb_node); | |
530 | if (ip < m->start) | |
531 | p = &(*p)->rb_left; | |
532 | else | |
533 | p = &(*p)->rb_right; | |
534 | } | |
535 | ||
536 | rb_link_node(&map->rb_node, parent, p); | |
537 | rb_insert_color(&map->rb_node, maps); | |
538 | } | |
539 | ||
237a7e04 | 540 | void maps__remove(struct rb_root *maps, struct map *map) |
076c6e45 | 541 | { |
237a7e04 | 542 | rb_erase(&map->rb_node, maps); |
076c6e45 ACM |
543 | } |
544 | ||
4b8cf846 ACM |
545 | struct map *maps__find(struct rb_root *maps, u64 ip) |
546 | { | |
547 | struct rb_node **p = &maps->rb_node; | |
548 | struct rb_node *parent = NULL; | |
549 | struct map *m; | |
550 | ||
551 | while (*p != NULL) { | |
552 | parent = *p; | |
553 | m = rb_entry(parent, struct map, rb_node); | |
554 | if (ip < m->start) | |
555 | p = &(*p)->rb_left; | |
556 | else if (ip > m->end) | |
557 | p = &(*p)->rb_right; | |
558 | else | |
559 | return m; | |
560 | } | |
561 | ||
562 | return NULL; | |
563 | } | |
8e0cf965 AH |
564 | |
565 | struct map *maps__first(struct rb_root *maps) | |
566 | { | |
567 | struct rb_node *first = rb_first(maps); | |
568 | ||
569 | if (first) | |
570 | return rb_entry(first, struct map, rb_node); | |
571 | return NULL; | |
572 | } | |
573 | ||
574 | struct map *maps__next(struct map *map) | |
575 | { | |
576 | struct rb_node *next = rb_next(&map->rb_node); | |
577 | ||
578 | if (next) | |
579 | return rb_entry(next, struct map, rb_node); | |
580 | return NULL; | |
581 | } |