blob: d75bded21fe0ce73ef9aea745ff565c9ba61a204 [file] [log] [blame]
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -02001/*
2 * builtin-buildid-cache.c
3 *
4 * Builtin buildid-cache command: Manages build-id cache
5 *
6 * Copyright (C) 2010, Red Hat Inc.
7 * Copyright (C) 2010, Arnaldo Carvalho de Melo <acme@redhat.com>
8 */
Adrian Hunterfc1b6912013-10-14 16:57:29 +03009#include <sys/types.h>
10#include <sys/time.h>
11#include <time.h>
12#include <dirent.h>
13#include <unistd.h>
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -020014#include "builtin.h"
15#include "perf.h"
16#include "util/cache.h"
17#include "util/debug.h"
18#include "util/header.h"
Josh Poimboeuf4b6ab942015-12-15 09:39:39 -060019#include <subcmd/parse-options.h>
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -020020#include "util/strlist.h"
Jiri Olsaebb296c2012-10-27 23:18:28 +020021#include "util/build-id.h"
Arnaldo Carvalho de Melofbb69762012-12-07 16:28:27 -030022#include "util/session.h"
Jiri Olsa4383db82012-10-27 23:18:29 +020023#include "util/symbol.h"
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -020024
Adrian Hunterfc1b6912013-10-14 16:57:29 +030025static int build_id_cache__kcore_buildid(const char *proc_dir, char *sbuildid)
26{
27 char root_dir[PATH_MAX];
Adrian Hunterfc1b6912013-10-14 16:57:29 +030028 char *p;
29
30 strlcpy(root_dir, proc_dir, sizeof(root_dir));
31
32 p = strrchr(root_dir, '/');
33 if (!p)
34 return -1;
35 *p = '\0';
Masami Hiramatsu0b5a7932015-08-15 20:42:59 +090036 return sysfs__sprintf_build_id(root_dir, sbuildid);
Adrian Hunterfc1b6912013-10-14 16:57:29 +030037}
38
39static int build_id_cache__kcore_dir(char *dir, size_t sz)
40{
Wang Nan37b20152016-01-25 09:56:13 +000041 return fetch_current_timestamp(dir, sz);
Adrian Hunterfc1b6912013-10-14 16:57:29 +030042}
43
Adrian Hunterd3b70222014-01-29 16:14:44 +020044static bool same_kallsyms_reloc(const char *from_dir, char *to_dir)
45{
46 char from[PATH_MAX];
47 char to[PATH_MAX];
48 const char *name;
49 u64 addr1 = 0, addr2 = 0;
50 int i;
51
52 scnprintf(from, sizeof(from), "%s/kallsyms", from_dir);
53 scnprintf(to, sizeof(to), "%s/kallsyms", to_dir);
54
55 for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) {
56 addr1 = kallsyms__get_function_start(from, name);
57 if (addr1)
58 break;
59 }
60
61 if (name)
62 addr2 = kallsyms__get_function_start(to, name);
63
64 return addr1 == addr2;
65}
66
Adrian Hunterfc1b6912013-10-14 16:57:29 +030067static int build_id_cache__kcore_existing(const char *from_dir, char *to_dir,
68 size_t to_dir_sz)
69{
70 char from[PATH_MAX];
71 char to[PATH_MAX];
Adrian Hunterd3b70222014-01-29 16:14:44 +020072 char to_subdir[PATH_MAX];
Adrian Hunterfc1b6912013-10-14 16:57:29 +030073 struct dirent *dent;
74 int ret = -1;
75 DIR *d;
76
77 d = opendir(to_dir);
78 if (!d)
79 return -1;
80
81 scnprintf(from, sizeof(from), "%s/modules", from_dir);
82
83 while (1) {
84 dent = readdir(d);
85 if (!dent)
86 break;
87 if (dent->d_type != DT_DIR)
88 continue;
89 scnprintf(to, sizeof(to), "%s/%s/modules", to_dir,
90 dent->d_name);
Adrian Hunterd3b70222014-01-29 16:14:44 +020091 scnprintf(to_subdir, sizeof(to_subdir), "%s/%s",
92 to_dir, dent->d_name);
93 if (!compare_proc_modules(from, to) &&
94 same_kallsyms_reloc(from_dir, to_subdir)) {
95 strlcpy(to_dir, to_subdir, to_dir_sz);
Adrian Hunterfc1b6912013-10-14 16:57:29 +030096 ret = 0;
97 break;
98 }
99 }
100
101 closedir(d);
102
103 return ret;
104}
105
Masami Hiramatsue35f7362015-02-10 18:18:51 +0900106static int build_id_cache__add_kcore(const char *filename, bool force)
Adrian Hunterfc1b6912013-10-14 16:57:29 +0300107{
Masami Hiramatsud77fac72015-07-15 18:14:28 +0900108 char dir[32], sbuildid[SBUILD_ID_SIZE];
Adrian Hunterfc1b6912013-10-14 16:57:29 +0300109 char from_dir[PATH_MAX], to_dir[PATH_MAX];
110 char *p;
111
112 strlcpy(from_dir, filename, sizeof(from_dir));
113
114 p = strrchr(from_dir, '/');
115 if (!p || strcmp(p + 1, "kcore"))
116 return -1;
117 *p = '\0';
118
Masami Hiramatsu0b5a7932015-08-15 20:42:59 +0900119 if (build_id_cache__kcore_buildid(from_dir, sbuildid) < 0)
Adrian Hunterfc1b6912013-10-14 16:57:29 +0300120 return -1;
121
Masami Hiramatsu0a775822016-05-15 12:19:40 +0900122 scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s",
123 buildid_dir, DSO__NAME_KCORE, sbuildid);
Adrian Hunterfc1b6912013-10-14 16:57:29 +0300124
Adrian Hunter5173fbb2014-07-14 13:02:38 +0300125 if (!force &&
126 !build_id_cache__kcore_existing(from_dir, to_dir, sizeof(to_dir))) {
Adrian Hunterfc1b6912013-10-14 16:57:29 +0300127 pr_debug("same kcore found in %s\n", to_dir);
128 return 0;
129 }
130
131 if (build_id_cache__kcore_dir(dir, sizeof(dir)))
132 return -1;
133
Masami Hiramatsu0a775822016-05-15 12:19:40 +0900134 scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s/%s",
135 buildid_dir, DSO__NAME_KCORE, sbuildid, dir);
Adrian Hunterfc1b6912013-10-14 16:57:29 +0300136
137 if (mkdir_p(to_dir, 0755))
138 return -1;
139
140 if (kcore_copy(from_dir, to_dir)) {
141 /* Remove YYYYmmddHHMMSShh directory */
142 if (!rmdir(to_dir)) {
143 p = strrchr(to_dir, '/');
144 if (p)
145 *p = '\0';
146 /* Try to remove buildid directory */
147 if (!rmdir(to_dir)) {
148 p = strrchr(to_dir, '/');
149 if (p)
150 *p = '\0';
151 /* Try to remove [kernel.kcore] directory */
152 rmdir(to_dir);
153 }
154 }
155 return -1;
156 }
157
158 pr_debug("kcore added to build-id cache directory %s\n", to_dir);
159
160 return 0;
161}
162
Masami Hiramatsue35f7362015-02-10 18:18:51 +0900163static int build_id_cache__add_file(const char *filename)
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200164{
Masami Hiramatsud77fac72015-07-15 18:14:28 +0900165 char sbuild_id[SBUILD_ID_SIZE];
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200166 u8 build_id[BUILD_ID_SIZE];
167 int err;
168
169 if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
170 pr_debug("Couldn't read a build-id in %s\n", filename);
171 return -1;
172 }
173
174 build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
Masami Hiramatsue35f7362015-02-10 18:18:51 +0900175 err = build_id_cache__add_s(sbuild_id, filename,
Jiri Olsa7dbf4dc2012-09-10 18:50:19 +0200176 false, false);
Masami Hiramatsucc169c72015-02-27 13:50:28 +0900177 pr_debug("Adding %s %s: %s\n", sbuild_id, filename,
178 err ? "FAIL" : "Ok");
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200179 return err;
180}
181
Masami Hiramatsue35f7362015-02-10 18:18:51 +0900182static int build_id_cache__remove_file(const char *filename)
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200183{
184 u8 build_id[BUILD_ID_SIZE];
Masami Hiramatsud77fac72015-07-15 18:14:28 +0900185 char sbuild_id[SBUILD_ID_SIZE];
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200186
187 int err;
188
189 if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
190 pr_debug("Couldn't read a build-id in %s\n", filename);
191 return -1;
192 }
193
194 build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
Masami Hiramatsue35f7362015-02-10 18:18:51 +0900195 err = build_id_cache__remove_s(sbuild_id);
Masami Hiramatsucc169c72015-02-27 13:50:28 +0900196 pr_debug("Removing %s %s: %s\n", sbuild_id, filename,
197 err ? "FAIL" : "Ok");
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200198
199 return err;
200}
201
Masami Hiramatsu8d8c8e42015-02-27 13:50:26 +0900202static int build_id_cache__purge_path(const char *pathname)
203{
204 struct strlist *list;
205 struct str_node *pos;
206 int err;
207
208 err = build_id_cache__list_build_ids(pathname, &list);
209 if (err)
210 goto out;
211
212 strlist__for_each(pos, list) {
213 err = build_id_cache__remove_s(pos->s);
Masami Hiramatsucc169c72015-02-27 13:50:28 +0900214 pr_debug("Removing %s %s: %s\n", pos->s, pathname,
215 err ? "FAIL" : "Ok");
Masami Hiramatsu8d8c8e42015-02-27 13:50:26 +0900216 if (err)
217 break;
218 }
219 strlist__delete(list);
220
221out:
Masami Hiramatsucc169c72015-02-27 13:50:28 +0900222 pr_debug("Purging %s: %s\n", pathname, err ? "FAIL" : "Ok");
Masami Hiramatsu8d8c8e42015-02-27 13:50:26 +0900223
224 return err;
225}
226
Arnaldo Carvalho de Melofbb69762012-12-07 16:28:27 -0300227static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused)
228{
229 char filename[PATH_MAX];
230 u8 build_id[BUILD_ID_SIZE];
231
232 if (dso__build_id_filename(dso, filename, sizeof(filename)) &&
233 filename__read_build_id(filename, build_id,
234 sizeof(build_id)) != sizeof(build_id)) {
235 if (errno == ENOENT)
236 return false;
237
Arnaldo Carvalho de Melo48000a12014-12-17 17:24:45 -0300238 pr_warning("Problems with %s file, consider removing it from the cache\n",
Arnaldo Carvalho de Melofbb69762012-12-07 16:28:27 -0300239 filename);
240 } else if (memcmp(dso->build_id, build_id, sizeof(dso->build_id))) {
Arnaldo Carvalho de Melo48000a12014-12-17 17:24:45 -0300241 pr_warning("Problems with %s file, consider removing it from the cache\n",
Arnaldo Carvalho de Melofbb69762012-12-07 16:28:27 -0300242 filename);
243 }
244
245 return true;
246}
247
Namhyung Kime3ed75b2014-08-12 15:40:36 +0900248static int build_id_cache__fprintf_missing(struct perf_session *session, FILE *fp)
Arnaldo Carvalho de Melofbb69762012-12-07 16:28:27 -0300249{
Arnaldo Carvalho de Melofbb69762012-12-07 16:28:27 -0300250 perf_session__fprintf_dsos_buildid(session, fp, dso__missing_buildid_cache, 0);
Arnaldo Carvalho de Melofbb69762012-12-07 16:28:27 -0300251 return 0;
252}
253
Masami Hiramatsue35f7362015-02-10 18:18:51 +0900254static int build_id_cache__update_file(const char *filename)
Namhyung Kimeeb49842013-02-07 18:02:11 +0900255{
256 u8 build_id[BUILD_ID_SIZE];
Masami Hiramatsud77fac72015-07-15 18:14:28 +0900257 char sbuild_id[SBUILD_ID_SIZE];
Namhyung Kimeeb49842013-02-07 18:02:11 +0900258
Masami Hiramatsua50d11a2015-02-26 15:54:40 +0900259 int err = 0;
Namhyung Kimeeb49842013-02-07 18:02:11 +0900260
261 if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
262 pr_debug("Couldn't read a build-id in %s\n", filename);
263 return -1;
264 }
265
266 build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
Masami Hiramatsua50d11a2015-02-26 15:54:40 +0900267 if (build_id_cache__cached(sbuild_id))
268 err = build_id_cache__remove_s(sbuild_id);
269
Masami Hiramatsue35f7362015-02-10 18:18:51 +0900270 if (!err)
271 err = build_id_cache__add_s(sbuild_id, filename, false, false);
272
Masami Hiramatsucc169c72015-02-27 13:50:28 +0900273 pr_debug("Updating %s %s: %s\n", sbuild_id, filename,
274 err ? "FAIL" : "Ok");
Namhyung Kimeeb49842013-02-07 18:02:11 +0900275
276 return err;
277}
278
Arnaldo Carvalho de Melo472cc832012-10-01 15:20:58 -0300279int cmd_buildid_cache(int argc, const char **argv,
280 const char *prefix __maybe_unused)
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200281{
282 struct strlist *list;
283 struct str_node *pos;
Arnaldo Carvalho de Melofbb69762012-12-07 16:28:27 -0300284 int ret = 0;
285 bool force = false;
Arnaldo Carvalho de Melo472cc832012-10-01 15:20:58 -0300286 char const *add_name_list_str = NULL,
Arnaldo Carvalho de Melofbb69762012-12-07 16:28:27 -0300287 *remove_name_list_str = NULL,
Masami Hiramatsu8d8c8e42015-02-27 13:50:26 +0900288 *purge_name_list_str = NULL,
Namhyung Kimeeb49842013-02-07 18:02:11 +0900289 *missing_filename = NULL,
Adrian Hunterfc1b6912013-10-14 16:57:29 +0300290 *update_name_list_str = NULL,
Jiri Olsaeec5a682014-12-01 20:06:27 +0100291 *kcore_filename = NULL;
Masami Hiramatsu340481ad2014-08-14 02:22:49 +0000292 char sbuf[STRERR_BUFSIZE];
Namhyung Kimeeb49842013-02-07 18:02:11 +0900293
Namhyung Kime3ed75b2014-08-12 15:40:36 +0900294 struct perf_data_file file = {
295 .mode = PERF_DATA_MODE_READ,
296 };
297 struct perf_session *session = NULL;
298
Arnaldo Carvalho de Melo472cc832012-10-01 15:20:58 -0300299 const struct option buildid_cache_options[] = {
300 OPT_STRING('a', "add", &add_name_list_str,
301 "file list", "file(s) to add"),
Adrian Hunterfc1b6912013-10-14 16:57:29 +0300302 OPT_STRING('k', "kcore", &kcore_filename,
303 "file", "kcore file to add"),
Arnaldo Carvalho de Melo472cc832012-10-01 15:20:58 -0300304 OPT_STRING('r', "remove", &remove_name_list_str, "file list",
305 "file(s) to remove"),
Masami Hiramatsu8d8c8e42015-02-27 13:50:26 +0900306 OPT_STRING('p', "purge", &purge_name_list_str, "path list",
307 "path(s) to remove (remove old caches too)"),
Arnaldo Carvalho de Melofbb69762012-12-07 16:28:27 -0300308 OPT_STRING('M', "missing", &missing_filename, "file",
309 "to find missing build ids in the cache"),
310 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
Namhyung Kimeeb49842013-02-07 18:02:11 +0900311 OPT_STRING('u', "update", &update_name_list_str, "file list",
312 "file(s) to update"),
Arnaldo Carvalho de Melo472cc832012-10-01 15:20:58 -0300313 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
314 OPT_END()
315 };
316 const char * const buildid_cache_usage[] = {
317 "perf buildid-cache [<options>]",
318 NULL
319 };
320
321 argc = parse_options(argc, argv, buildid_cache_options,
322 buildid_cache_usage, 0);
323
Masami Hiramatsu0497d0a2015-02-27 13:50:31 +0900324 if (argc || (!add_name_list_str && !kcore_filename &&
325 !remove_name_list_str && !purge_name_list_str &&
326 !missing_filename && !update_name_list_str))
327 usage_with_options(buildid_cache_usage, buildid_cache_options);
328
Namhyung Kime3ed75b2014-08-12 15:40:36 +0900329 if (missing_filename) {
330 file.path = missing_filename;
331 file.force = force;
332
333 session = perf_session__new(&file, false, NULL);
334 if (session == NULL)
335 return -1;
336 }
337
Namhyung Kim0a7e6d12014-08-12 15:40:45 +0900338 if (symbol__init(session ? &session->header.env : NULL) < 0)
Namhyung Kime3ed75b2014-08-12 15:40:36 +0900339 goto out;
Arnaldo Carvalho de Melo472cc832012-10-01 15:20:58 -0300340
341 setup_pager();
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200342
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200343 if (add_name_list_str) {
Arnaldo Carvalho de Melo4a77e212015-07-20 12:13:34 -0300344 list = strlist__new(add_name_list_str, NULL);
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200345 if (list) {
346 strlist__for_each(pos, list)
Masami Hiramatsue35f7362015-02-10 18:18:51 +0900347 if (build_id_cache__add_file(pos->s)) {
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200348 if (errno == EEXIST) {
349 pr_debug("%s already in the cache\n",
350 pos->s);
351 continue;
352 }
353 pr_warning("Couldn't add %s: %s\n",
Masami Hiramatsu340481ad2014-08-14 02:22:49 +0000354 pos->s, strerror_r(errno, sbuf, sizeof(sbuf)));
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200355 }
356
357 strlist__delete(list);
358 }
359 }
360
361 if (remove_name_list_str) {
Arnaldo Carvalho de Melo4a77e212015-07-20 12:13:34 -0300362 list = strlist__new(remove_name_list_str, NULL);
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200363 if (list) {
364 strlist__for_each(pos, list)
Masami Hiramatsue35f7362015-02-10 18:18:51 +0900365 if (build_id_cache__remove_file(pos->s)) {
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200366 if (errno == ENOENT) {
367 pr_debug("%s wasn't in the cache\n",
368 pos->s);
369 continue;
370 }
371 pr_warning("Couldn't remove %s: %s\n",
Masami Hiramatsu340481ad2014-08-14 02:22:49 +0000372 pos->s, strerror_r(errno, sbuf, sizeof(sbuf)));
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200373 }
374
375 strlist__delete(list);
376 }
377 }
378
Masami Hiramatsu8d8c8e42015-02-27 13:50:26 +0900379 if (purge_name_list_str) {
Arnaldo Carvalho de Melo4a77e212015-07-20 12:13:34 -0300380 list = strlist__new(purge_name_list_str, NULL);
Masami Hiramatsu8d8c8e42015-02-27 13:50:26 +0900381 if (list) {
382 strlist__for_each(pos, list)
383 if (build_id_cache__purge_path(pos->s)) {
384 if (errno == ENOENT) {
385 pr_debug("%s wasn't in the cache\n",
386 pos->s);
387 continue;
388 }
389 pr_warning("Couldn't remove %s: %s\n",
390 pos->s, strerror_r(errno, sbuf, sizeof(sbuf)));
391 }
392
393 strlist__delete(list);
394 }
395 }
396
Arnaldo Carvalho de Melofbb69762012-12-07 16:28:27 -0300397 if (missing_filename)
Namhyung Kime3ed75b2014-08-12 15:40:36 +0900398 ret = build_id_cache__fprintf_missing(session, stdout);
Arnaldo Carvalho de Melofbb69762012-12-07 16:28:27 -0300399
Namhyung Kimeeb49842013-02-07 18:02:11 +0900400 if (update_name_list_str) {
Arnaldo Carvalho de Melo4a77e212015-07-20 12:13:34 -0300401 list = strlist__new(update_name_list_str, NULL);
Namhyung Kimeeb49842013-02-07 18:02:11 +0900402 if (list) {
403 strlist__for_each(pos, list)
Masami Hiramatsue35f7362015-02-10 18:18:51 +0900404 if (build_id_cache__update_file(pos->s)) {
Namhyung Kimeeb49842013-02-07 18:02:11 +0900405 if (errno == ENOENT) {
406 pr_debug("%s wasn't in the cache\n",
407 pos->s);
408 continue;
409 }
410 pr_warning("Couldn't update %s: %s\n",
Masami Hiramatsu340481ad2014-08-14 02:22:49 +0000411 pos->s, strerror_r(errno, sbuf, sizeof(sbuf)));
Namhyung Kimeeb49842013-02-07 18:02:11 +0900412 }
413
414 strlist__delete(list);
415 }
416 }
417
Masami Hiramatsue35f7362015-02-10 18:18:51 +0900418 if (kcore_filename && build_id_cache__add_kcore(kcore_filename, force))
Adrian Hunterfc1b6912013-10-14 16:57:29 +0300419 pr_warning("Couldn't add %s\n", kcore_filename);
420
Namhyung Kime3ed75b2014-08-12 15:40:36 +0900421out:
422 if (session)
423 perf_session__delete(session);
424
Arnaldo Carvalho de Melofbb69762012-12-07 16:28:27 -0300425 return ret;
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200426}