Commit | Line | Data |
---|---|---|
7b2567c1 ACM |
1 | /* |
2 | * build-id.c | |
3 | * | |
4 | * build-id support | |
5 | * | |
6 | * Copyright (C) 2009, 2010 Red Hat Inc. | |
7 | * Copyright (C) 2009, 2010 Arnaldo Carvalho de Melo <acme@redhat.com> | |
8 | */ | |
b36f19d5 ACM |
9 | #include "util.h" |
10 | #include <stdio.h> | |
7b2567c1 ACM |
11 | #include "build-id.h" |
12 | #include "event.h" | |
13 | #include "symbol.h" | |
14 | #include <linux/kernel.h> | |
591765fd | 15 | #include "debug.h" |
d20deb64 | 16 | #include "session.h" |
45694aa7 | 17 | #include "tool.h" |
e195fac8 NK |
18 | #include "header.h" |
19 | #include "vdso.h" | |
7b2567c1 | 20 | |
73c5d224 NK |
21 | |
22 | static bool no_buildid_cache; | |
23 | ||
54a3cf59 AV |
24 | int build_id__mark_dso_hit(struct perf_tool *tool __maybe_unused, |
25 | union perf_event *event, | |
ef89325f | 26 | struct perf_sample *sample, |
54a3cf59 AV |
27 | struct perf_evsel *evsel __maybe_unused, |
28 | struct machine *machine) | |
7b2567c1 ACM |
29 | { |
30 | struct addr_location al; | |
ef89325f | 31 | struct thread *thread = machine__findnew_thread(machine, sample->pid, |
13ce34df | 32 | sample->tid); |
7b2567c1 ACM |
33 | |
34 | if (thread == NULL) { | |
35 | pr_err("problem processing %d event, skipping it.\n", | |
36 | event->header.type); | |
37 | return -1; | |
38 | } | |
39 | ||
473398a2 | 40 | thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->ip, &al); |
7b2567c1 ACM |
41 | |
42 | if (al.map != NULL) | |
43 | al.map->dso->hit = 1; | |
44 | ||
b91fc39f | 45 | thread__put(thread); |
7b2567c1 ACM |
46 | return 0; |
47 | } | |
48 | ||
1d037ca1 | 49 | static int perf_event__exit_del_thread(struct perf_tool *tool __maybe_unused, |
d20deb64 | 50 | union perf_event *event, |
1d037ca1 IT |
51 | struct perf_sample *sample |
52 | __maybe_unused, | |
743eb868 | 53 | struct machine *machine) |
591765fd | 54 | { |
314add6b AH |
55 | struct thread *thread = machine__findnew_thread(machine, |
56 | event->fork.pid, | |
57 | event->fork.tid); | |
591765fd | 58 | |
8115d60c ACM |
59 | dump_printf("(%d:%d):(%d:%d)\n", event->fork.pid, event->fork.tid, |
60 | event->fork.ppid, event->fork.ptid); | |
591765fd | 61 | |
b91fc39f | 62 | if (thread) { |
5e78c69b | 63 | machine__remove_thread(machine, thread); |
b91fc39f ACM |
64 | thread__put(thread); |
65 | } | |
591765fd ACM |
66 | |
67 | return 0; | |
68 | } | |
69 | ||
45694aa7 | 70 | struct perf_tool build_id__mark_dso_hit_ops = { |
7b2567c1 | 71 | .sample = build_id__mark_dso_hit, |
8115d60c | 72 | .mmap = perf_event__process_mmap, |
5c5e854b | 73 | .mmap2 = perf_event__process_mmap2, |
f62d3f0f | 74 | .fork = perf_event__process_fork, |
8115d60c | 75 | .exit = perf_event__exit_del_thread, |
299c3452 SE |
76 | .attr = perf_event__process_attr, |
77 | .build_id = perf_event__process_build_id, | |
1216b65c | 78 | .ordered_events = true, |
7b2567c1 | 79 | }; |
b36f19d5 | 80 | |
ebb296c2 JO |
81 | int build_id__sprintf(const u8 *build_id, int len, char *bf) |
82 | { | |
83 | char *bid = bf; | |
84 | const u8 *raw = build_id; | |
85 | int i; | |
86 | ||
87 | for (i = 0; i < len; ++i) { | |
88 | sprintf(bid, "%02x", *raw); | |
89 | ++raw; | |
90 | bid += 2; | |
91 | } | |
92 | ||
7375e151 | 93 | return (bid - bf) + 1; |
ebb296c2 JO |
94 | } |
95 | ||
0b5a7935 MH |
96 | int sysfs__sprintf_build_id(const char *root_dir, char *sbuild_id) |
97 | { | |
98 | char notes[PATH_MAX]; | |
99 | u8 build_id[BUILD_ID_SIZE]; | |
100 | int ret; | |
101 | ||
102 | if (!root_dir) | |
103 | root_dir = ""; | |
104 | ||
105 | scnprintf(notes, sizeof(notes), "%s/sys/kernel/notes", root_dir); | |
106 | ||
107 | ret = sysfs__read_build_id(notes, build_id, sizeof(build_id)); | |
108 | if (ret < 0) | |
109 | return ret; | |
110 | ||
111 | return build_id__sprintf(build_id, sizeof(build_id), sbuild_id); | |
112 | } | |
113 | ||
114 | int filename__sprintf_build_id(const char *pathname, char *sbuild_id) | |
115 | { | |
116 | u8 build_id[BUILD_ID_SIZE]; | |
117 | int ret; | |
118 | ||
119 | ret = filename__read_build_id(pathname, build_id, sizeof(build_id)); | |
120 | if (ret < 0) | |
121 | return ret; | |
122 | else if (ret != sizeof(build_id)) | |
123 | return -EINVAL; | |
124 | ||
125 | return build_id__sprintf(build_id, sizeof(build_id), sbuild_id); | |
126 | } | |
127 | ||
5cb113fd MH |
128 | /* asnprintf consolidates asprintf and snprintf */ |
129 | static int asnprintf(char **strp, size_t size, const char *fmt, ...) | |
130 | { | |
131 | va_list ap; | |
132 | int ret; | |
133 | ||
134 | if (!strp) | |
135 | return -EINVAL; | |
136 | ||
137 | va_start(ap, fmt); | |
138 | if (*strp) | |
139 | ret = vsnprintf(*strp, size, fmt, ap); | |
140 | else | |
141 | ret = vasprintf(strp, fmt, ap); | |
142 | va_end(ap); | |
143 | ||
144 | return ret; | |
145 | } | |
146 | ||
01412261 MH |
147 | char *build_id_cache__kallsyms_path(const char *sbuild_id, char *bf, |
148 | size_t size) | |
149 | { | |
01412261 MH |
150 | bool retry_old = true; |
151 | ||
c58c49ac WN |
152 | snprintf(bf, size, "%s/%s/%s/kallsyms", |
153 | buildid_dir, DSO__NAME_KALLSYMS, sbuild_id); | |
01412261 MH |
154 | retry: |
155 | if (!access(bf, F_OK)) | |
156 | return bf; | |
01412261 MH |
157 | if (retry_old) { |
158 | /* Try old style kallsyms cache */ | |
c58c49ac WN |
159 | snprintf(bf, size, "%s/%s/%s", |
160 | buildid_dir, DSO__NAME_KALLSYMS, sbuild_id); | |
01412261 MH |
161 | retry_old = false; |
162 | goto retry; | |
163 | } | |
164 | ||
165 | return NULL; | |
166 | } | |
167 | ||
168 | static char *build_id_cache__linkname(const char *sbuild_id, char *bf, | |
169 | size_t size) | |
5cb113fd MH |
170 | { |
171 | char *tmp = bf; | |
172 | int ret = asnprintf(&bf, size, "%s/.build-id/%.2s/%s", buildid_dir, | |
173 | sbuild_id, sbuild_id + 2); | |
174 | if (ret < 0 || (tmp && size < (unsigned int)ret)) | |
175 | return NULL; | |
176 | return bf; | |
177 | } | |
178 | ||
01412261 MH |
179 | static const char *build_id_cache__basename(bool is_kallsyms, bool is_vdso) |
180 | { | |
181 | return is_kallsyms ? "kallsyms" : (is_vdso ? "vdso" : "elf"); | |
182 | } | |
183 | ||
3344996e | 184 | char *dso__build_id_filename(const struct dso *dso, char *bf, size_t size) |
b36f19d5 | 185 | { |
01412261 MH |
186 | bool is_kallsyms = dso__is_kallsyms((struct dso *)dso); |
187 | bool is_vdso = dso__is_vdso((struct dso *)dso); | |
188 | char sbuild_id[SBUILD_ID_SIZE]; | |
189 | char *linkname; | |
190 | bool alloc = (bf == NULL); | |
191 | int ret; | |
b36f19d5 | 192 | |
c824c433 | 193 | if (!dso->has_build_id) |
b36f19d5 ACM |
194 | return NULL; |
195 | ||
01412261 MH |
196 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id); |
197 | linkname = build_id_cache__linkname(sbuild_id, NULL, 0); | |
198 | if (!linkname) | |
199 | return NULL; | |
200 | ||
201 | /* Check if old style build_id cache */ | |
202 | if (is_regular_file(linkname)) | |
203 | ret = asnprintf(&bf, size, "%s", linkname); | |
204 | else | |
205 | ret = asnprintf(&bf, size, "%s/%s", linkname, | |
206 | build_id_cache__basename(is_kallsyms, is_vdso)); | |
207 | if (ret < 0 || (!alloc && size < (unsigned int)ret)) | |
208 | bf = NULL; | |
209 | free(linkname); | |
210 | ||
211 | return bf; | |
b36f19d5 | 212 | } |
e195fac8 | 213 | |
e7ee4047 WN |
214 | bool dso__build_id_is_kmod(const struct dso *dso, char *bf, size_t size) |
215 | { | |
01412261 | 216 | char *id_name = NULL, *ch; |
e7ee4047 | 217 | struct stat sb; |
01412261 MH |
218 | char sbuild_id[SBUILD_ID_SIZE]; |
219 | ||
220 | if (!dso->has_build_id) | |
221 | goto err; | |
e7ee4047 | 222 | |
01412261 MH |
223 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id); |
224 | id_name = build_id_cache__linkname(sbuild_id, NULL, 0); | |
e7ee4047 WN |
225 | if (!id_name) |
226 | goto err; | |
227 | if (access(id_name, F_OK)) | |
228 | goto err; | |
229 | if (lstat(id_name, &sb) == -1) | |
230 | goto err; | |
231 | if ((size_t)sb.st_size > size - 1) | |
232 | goto err; | |
233 | if (readlink(id_name, bf, size - 1) < 0) | |
234 | goto err; | |
235 | ||
236 | bf[sb.st_size] = '\0'; | |
237 | ||
238 | /* | |
239 | * link should be: | |
240 | * ../../lib/modules/4.4.0-rc4/kernel/net/ipv4/netfilter/nf_nat_ipv4.ko/a09fe3eb3147dafa4e3b31dbd6257e4d696bdc92 | |
241 | */ | |
242 | ch = strrchr(bf, '/'); | |
243 | if (!ch) | |
244 | goto err; | |
245 | if (ch - 3 < bf) | |
246 | goto err; | |
247 | ||
01412261 | 248 | free(id_name); |
e7ee4047 WN |
249 | return strncmp(".ko", ch - 3, 3) == 0; |
250 | err: | |
e7ee4047 WN |
251 | pr_err("Invalid build id: %s\n", id_name ? : |
252 | dso->long_name ? : | |
253 | dso->short_name ? : | |
254 | "[unknown]"); | |
01412261 | 255 | free(id_name); |
e7ee4047 WN |
256 | return false; |
257 | } | |
258 | ||
e195fac8 NK |
259 | #define dsos__for_each_with_build_id(pos, head) \ |
260 | list_for_each_entry(pos, head, node) \ | |
261 | if (!pos->has_build_id) \ | |
262 | continue; \ | |
263 | else | |
264 | ||
265 | static int write_buildid(const char *name, size_t name_len, u8 *build_id, | |
266 | pid_t pid, u16 misc, int fd) | |
267 | { | |
268 | int err; | |
269 | struct build_id_event b; | |
270 | size_t len; | |
271 | ||
272 | len = name_len + 1; | |
273 | len = PERF_ALIGN(len, NAME_ALIGN); | |
274 | ||
275 | memset(&b, 0, sizeof(b)); | |
276 | memcpy(&b.build_id, build_id, BUILD_ID_SIZE); | |
277 | b.pid = pid; | |
278 | b.header.misc = misc; | |
279 | b.header.size = sizeof(b) + len; | |
280 | ||
281 | err = writen(fd, &b, sizeof(b)); | |
282 | if (err < 0) | |
283 | return err; | |
284 | ||
285 | return write_padded(fd, name, name_len + 1, len); | |
286 | } | |
287 | ||
3d39ac53 | 288 | static int machine__write_buildid_table(struct machine *machine, int fd) |
e195fac8 | 289 | { |
3d39ac53 | 290 | int err = 0; |
e195fac8 NK |
291 | char nm[PATH_MAX]; |
292 | struct dso *pos; | |
3d39ac53 ACM |
293 | u16 kmisc = PERF_RECORD_MISC_KERNEL, |
294 | umisc = PERF_RECORD_MISC_USER; | |
295 | ||
296 | if (!machine__is_host(machine)) { | |
297 | kmisc = PERF_RECORD_MISC_GUEST_KERNEL; | |
298 | umisc = PERF_RECORD_MISC_GUEST_USER; | |
299 | } | |
e195fac8 | 300 | |
3d39ac53 | 301 | dsos__for_each_with_build_id(pos, &machine->dsos.head) { |
e195fac8 NK |
302 | const char *name; |
303 | size_t name_len; | |
fd786fac | 304 | bool in_kernel = false; |
e195fac8 | 305 | |
6ae98ba6 | 306 | if (!pos->hit && !dso__is_vdso(pos)) |
e195fac8 NK |
307 | continue; |
308 | ||
309 | if (dso__is_vdso(pos)) { | |
310 | name = pos->short_name; | |
70a2cba9 | 311 | name_len = pos->short_name_len; |
e195fac8 NK |
312 | } else if (dso__is_kcore(pos)) { |
313 | machine__mmap_name(machine, nm, sizeof(nm)); | |
314 | name = nm; | |
70a2cba9 | 315 | name_len = strlen(nm); |
e195fac8 NK |
316 | } else { |
317 | name = pos->long_name; | |
70a2cba9 | 318 | name_len = pos->long_name_len; |
e195fac8 NK |
319 | } |
320 | ||
fd786fac WN |
321 | in_kernel = pos->kernel || |
322 | is_kernel_module(name, | |
323 | PERF_RECORD_MISC_CPUMODE_UNKNOWN); | |
3d39ac53 | 324 | err = write_buildid(name, name_len, pos->build_id, machine->pid, |
fd786fac | 325 | in_kernel ? kmisc : umisc, fd); |
e195fac8 | 326 | if (err) |
3d39ac53 | 327 | break; |
e195fac8 NK |
328 | } |
329 | ||
e195fac8 NK |
330 | return err; |
331 | } | |
332 | ||
333 | int perf_session__write_buildid_table(struct perf_session *session, int fd) | |
334 | { | |
335 | struct rb_node *nd; | |
336 | int err = machine__write_buildid_table(&session->machines.host, fd); | |
337 | ||
338 | if (err) | |
339 | return err; | |
340 | ||
341 | for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) { | |
342 | struct machine *pos = rb_entry(nd, struct machine, rb_node); | |
343 | err = machine__write_buildid_table(pos, fd); | |
344 | if (err) | |
345 | break; | |
346 | } | |
347 | return err; | |
348 | } | |
349 | ||
350 | static int __dsos__hit_all(struct list_head *head) | |
351 | { | |
352 | struct dso *pos; | |
353 | ||
354 | list_for_each_entry(pos, head, node) | |
355 | pos->hit = true; | |
356 | ||
357 | return 0; | |
358 | } | |
359 | ||
360 | static int machine__hit_all_dsos(struct machine *machine) | |
361 | { | |
3d39ac53 | 362 | return __dsos__hit_all(&machine->dsos.head); |
e195fac8 NK |
363 | } |
364 | ||
365 | int dsos__hit_all(struct perf_session *session) | |
366 | { | |
367 | struct rb_node *nd; | |
368 | int err; | |
369 | ||
370 | err = machine__hit_all_dsos(&session->machines.host); | |
371 | if (err) | |
372 | return err; | |
373 | ||
374 | for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) { | |
375 | struct machine *pos = rb_entry(nd, struct machine, rb_node); | |
376 | ||
377 | err = machine__hit_all_dsos(pos); | |
378 | if (err) | |
379 | return err; | |
380 | } | |
381 | ||
382 | return 0; | |
383 | } | |
384 | ||
73c5d224 NK |
385 | void disable_buildid_cache(void) |
386 | { | |
387 | no_buildid_cache = true; | |
388 | } | |
389 | ||
4698b8b7 MH |
390 | char *build_id_cache__cachedir(const char *sbuild_id, const char *name, |
391 | bool is_kallsyms, bool is_vdso) | |
8d8c8e4c MH |
392 | { |
393 | char *realname = (char *)name, *filename; | |
394 | bool slash = is_kallsyms || is_vdso; | |
395 | ||
396 | if (!slash) { | |
397 | realname = realpath(name, NULL); | |
398 | if (!realname) | |
399 | return NULL; | |
400 | } | |
401 | ||
01412261 MH |
402 | if (asprintf(&filename, "%s%s%s%s%s", buildid_dir, slash ? "/" : "", |
403 | is_vdso ? DSO__NAME_VDSO : realname, | |
404 | sbuild_id ? "/" : "", sbuild_id ?: "") < 0) | |
8d8c8e4c MH |
405 | filename = NULL; |
406 | ||
407 | if (!slash) | |
408 | free(realname); | |
409 | ||
410 | return filename; | |
411 | } | |
412 | ||
413 | int build_id_cache__list_build_ids(const char *pathname, | |
414 | struct strlist **result) | |
415 | { | |
8d8c8e4c | 416 | char *dir_name; |
8d8c8e4c MH |
417 | int ret = 0; |
418 | ||
4698b8b7 | 419 | dir_name = build_id_cache__cachedir(NULL, pathname, false, false); |
d65444d2 MH |
420 | if (!dir_name) |
421 | return -ENOMEM; | |
8d8c8e4c | 422 | |
d65444d2 MH |
423 | *result = lsdir(dir_name, lsdir_no_dot_filter); |
424 | if (!*result) | |
8d8c8e4c | 425 | ret = -errno; |
8d8c8e4c | 426 | free(dir_name); |
8d8c8e4c MH |
427 | |
428 | return ret; | |
429 | } | |
430 | ||
e35f7362 MH |
431 | int build_id_cache__add_s(const char *sbuild_id, const char *name, |
432 | bool is_kallsyms, bool is_vdso) | |
e195fac8 NK |
433 | { |
434 | const size_t size = PATH_MAX; | |
8d8c8e4c | 435 | char *realname = NULL, *filename = NULL, *dir_name = NULL, |
01412261 | 436 | *linkname = zalloc(size), *tmp; |
8d8c8e4c | 437 | int err = -1; |
e195fac8 | 438 | |
8d8c8e4c | 439 | if (!is_kallsyms) { |
e195fac8 | 440 | realname = realpath(name, NULL); |
8d8c8e4c MH |
441 | if (!realname) |
442 | goto out_free; | |
443 | } | |
e195fac8 | 444 | |
4698b8b7 MH |
445 | dir_name = build_id_cache__cachedir(sbuild_id, name, |
446 | is_kallsyms, is_vdso); | |
8d8c8e4c | 447 | if (!dir_name) |
e195fac8 NK |
448 | goto out_free; |
449 | ||
01412261 MH |
450 | /* Remove old style build-id cache */ |
451 | if (is_regular_file(dir_name)) | |
452 | if (unlink(dir_name)) | |
453 | goto out_free; | |
454 | ||
8d8c8e4c | 455 | if (mkdir_p(dir_name, 0755)) |
e195fac8 NK |
456 | goto out_free; |
457 | ||
01412261 MH |
458 | /* Save the allocated buildid dirname */ |
459 | if (asprintf(&filename, "%s/%s", dir_name, | |
460 | build_id_cache__basename(is_kallsyms, is_vdso)) < 0) { | |
8d8c8e4c MH |
461 | filename = NULL; |
462 | goto out_free; | |
463 | } | |
e195fac8 NK |
464 | |
465 | if (access(filename, F_OK)) { | |
466 | if (is_kallsyms) { | |
467 | if (copyfile("/proc/kallsyms", filename)) | |
468 | goto out_free; | |
0635b0f7 MV |
469 | } else if (link(realname, filename) && errno != EEXIST && |
470 | copyfile(name, filename)) | |
e195fac8 NK |
471 | goto out_free; |
472 | } | |
473 | ||
01412261 | 474 | if (!build_id_cache__linkname(sbuild_id, linkname, size)) |
5cb113fd MH |
475 | goto out_free; |
476 | tmp = strrchr(linkname, '/'); | |
477 | *tmp = '\0'; | |
e195fac8 NK |
478 | |
479 | if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) | |
480 | goto out_free; | |
481 | ||
5cb113fd | 482 | *tmp = '/'; |
01412261 MH |
483 | tmp = dir_name + strlen(buildid_dir) - 5; |
484 | memcpy(tmp, "../..", 5); | |
e195fac8 | 485 | |
01412261 | 486 | if (symlink(tmp, linkname) == 0) |
e195fac8 NK |
487 | err = 0; |
488 | out_free: | |
489 | if (!is_kallsyms) | |
490 | free(realname); | |
491 | free(filename); | |
8d8c8e4c | 492 | free(dir_name); |
e195fac8 NK |
493 | free(linkname); |
494 | return err; | |
495 | } | |
496 | ||
497 | static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size, | |
e35f7362 MH |
498 | const char *name, bool is_kallsyms, |
499 | bool is_vdso) | |
e195fac8 | 500 | { |
d77fac7f | 501 | char sbuild_id[SBUILD_ID_SIZE]; |
e195fac8 NK |
502 | |
503 | build_id__sprintf(build_id, build_id_size, sbuild_id); | |
504 | ||
e35f7362 | 505 | return build_id_cache__add_s(sbuild_id, name, is_kallsyms, is_vdso); |
e195fac8 NK |
506 | } |
507 | ||
a50d11a1 MH |
508 | bool build_id_cache__cached(const char *sbuild_id) |
509 | { | |
510 | bool ret = false; | |
01412261 | 511 | char *filename = build_id_cache__linkname(sbuild_id, NULL, 0); |
a50d11a1 MH |
512 | |
513 | if (filename && !access(filename, F_OK)) | |
514 | ret = true; | |
515 | free(filename); | |
516 | ||
517 | return ret; | |
518 | } | |
519 | ||
e35f7362 | 520 | int build_id_cache__remove_s(const char *sbuild_id) |
e195fac8 NK |
521 | { |
522 | const size_t size = PATH_MAX; | |
523 | char *filename = zalloc(size), | |
5cb113fd | 524 | *linkname = zalloc(size), *tmp; |
e195fac8 NK |
525 | int err = -1; |
526 | ||
527 | if (filename == NULL || linkname == NULL) | |
528 | goto out_free; | |
529 | ||
01412261 | 530 | if (!build_id_cache__linkname(sbuild_id, linkname, size)) |
5cb113fd | 531 | goto out_free; |
e195fac8 NK |
532 | |
533 | if (access(linkname, F_OK)) | |
534 | goto out_free; | |
535 | ||
536 | if (readlink(linkname, filename, size - 1) < 0) | |
537 | goto out_free; | |
538 | ||
539 | if (unlink(linkname)) | |
540 | goto out_free; | |
541 | ||
542 | /* | |
543 | * Since the link is relative, we must make it absolute: | |
544 | */ | |
5cb113fd MH |
545 | tmp = strrchr(linkname, '/') + 1; |
546 | snprintf(tmp, size - (tmp - linkname), "%s", filename); | |
e195fac8 | 547 | |
01412261 | 548 | if (rm_rf(linkname)) |
e195fac8 NK |
549 | goto out_free; |
550 | ||
551 | err = 0; | |
552 | out_free: | |
553 | free(filename); | |
554 | free(linkname); | |
555 | return err; | |
556 | } | |
557 | ||
e35f7362 | 558 | static int dso__cache_build_id(struct dso *dso, struct machine *machine) |
e195fac8 | 559 | { |
01412261 | 560 | bool is_kallsyms = dso__is_kallsyms(dso); |
e195fac8 NK |
561 | bool is_vdso = dso__is_vdso(dso); |
562 | const char *name = dso->long_name; | |
563 | char nm[PATH_MAX]; | |
564 | ||
565 | if (dso__is_kcore(dso)) { | |
566 | is_kallsyms = true; | |
567 | machine__mmap_name(machine, nm, sizeof(nm)); | |
568 | name = nm; | |
569 | } | |
570 | return build_id_cache__add_b(dso->build_id, sizeof(dso->build_id), name, | |
e35f7362 | 571 | is_kallsyms, is_vdso); |
e195fac8 NK |
572 | } |
573 | ||
574 | static int __dsos__cache_build_ids(struct list_head *head, | |
e35f7362 | 575 | struct machine *machine) |
e195fac8 NK |
576 | { |
577 | struct dso *pos; | |
578 | int err = 0; | |
579 | ||
580 | dsos__for_each_with_build_id(pos, head) | |
e35f7362 | 581 | if (dso__cache_build_id(pos, machine)) |
e195fac8 NK |
582 | err = -1; |
583 | ||
584 | return err; | |
585 | } | |
586 | ||
e35f7362 | 587 | static int machine__cache_build_ids(struct machine *machine) |
e195fac8 | 588 | { |
3d39ac53 | 589 | return __dsos__cache_build_ids(&machine->dsos.head, machine); |
e195fac8 NK |
590 | } |
591 | ||
592 | int perf_session__cache_build_ids(struct perf_session *session) | |
593 | { | |
594 | struct rb_node *nd; | |
595 | int ret; | |
e195fac8 | 596 | |
73c5d224 NK |
597 | if (no_buildid_cache) |
598 | return 0; | |
599 | ||
498922ad | 600 | if (mkdir(buildid_dir, 0755) != 0 && errno != EEXIST) |
e195fac8 NK |
601 | return -1; |
602 | ||
e35f7362 | 603 | ret = machine__cache_build_ids(&session->machines.host); |
e195fac8 NK |
604 | |
605 | for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) { | |
606 | struct machine *pos = rb_entry(nd, struct machine, rb_node); | |
e35f7362 | 607 | ret |= machine__cache_build_ids(pos); |
e195fac8 NK |
608 | } |
609 | return ret ? -1 : 0; | |
610 | } | |
611 | ||
612 | static bool machine__read_build_ids(struct machine *machine, bool with_hits) | |
613 | { | |
3d39ac53 | 614 | return __dsos__read_build_ids(&machine->dsos.head, with_hits); |
e195fac8 NK |
615 | } |
616 | ||
617 | bool perf_session__read_build_ids(struct perf_session *session, bool with_hits) | |
618 | { | |
619 | struct rb_node *nd; | |
620 | bool ret = machine__read_build_ids(&session->machines.host, with_hits); | |
621 | ||
622 | for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) { | |
623 | struct machine *pos = rb_entry(nd, struct machine, rb_node); | |
624 | ret |= machine__read_build_ids(pos, with_hits); | |
625 | } | |
626 | ||
627 | return ret; | |
628 | } |