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perf buildid-cache: Add --update option

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When adding vmlinux file to build-id cache, it'd be fail since kallsyms
dso with a same build-id was already added by perf record.

So one needs to remove the kallsyms first to add vmlinux into the cache.
Add --update option for doing it at once.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1360227734-375-5-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2013-02-07 18:02:11 +09:00 committed by Arnaldo Carvalho de Melo
parent a3d4fd7a2d
commit eeb4984542
2 changed files with 53 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
tools/perf/Documentation/perf-buildid-cache.txt
View File

@ -27,6 +27,10 @@ OPTIONS
-M::
--missing=::
List missing build ids in the cache for the specified file.
-u::
--update::
Update specified file of the cache. It can be used to update kallsyms
kernel dso to vmlinux in order to support annotation.
-v::
--verbose::
Be more verbose.

50
tools/perf/builtin-buildid-cache.c
View File

@ -93,6 +93,32 @@ static int build_id_cache__fprintf_missing(const char *filename, bool force, FIL
return 0;
}
static int build_id_cache__update_file(const char *filename,
const char *debugdir)
{
u8 build_id[BUILD_ID_SIZE];
char sbuild_id[BUILD_ID_SIZE * 2 + 1];
int err;
if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
pr_debug("Couldn't read a build-id in %s\n", filename);
return -1;
}
build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
err = build_id_cache__remove_s(sbuild_id, debugdir);
if (!err) {
err = build_id_cache__add_s(sbuild_id, debugdir, filename,
false, false);
}
if (verbose)
pr_info("Updating %s %s: %s\n", sbuild_id, filename,
err ? "FAIL" : "Ok");
return err;
}
int cmd_buildid_cache(int argc, const char **argv,
const char *prefix __maybe_unused)
{
@ -103,7 +129,9 @@ int cmd_buildid_cache(int argc, const char **argv,
char debugdir[PATH_MAX];
char const *add_name_list_str = NULL,
*remove_name_list_str = NULL,
*missing_filename = NULL;
*missing_filename = NULL,
*update_name_list_str = NULL;
const struct option buildid_cache_options[] = {
OPT_STRING('a', "add", &add_name_list_str,
"file list", "file(s) to add"),
@ -112,6 +140,8 @@ int cmd_buildid_cache(int argc, const char **argv,
OPT_STRING('M', "missing", &missing_filename, "file",
"to find missing build ids in the cache"),
OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
OPT_STRING('u', "update", &update_name_list_str, "file list",
"file(s) to update"),
OPT_INCR('v', "verbose", &verbose, "be more verbose"),
OPT_END()
};
@ -169,5 +199,23 @@ int cmd_buildid_cache(int argc, const char **argv,
if (missing_filename)
ret = build_id_cache__fprintf_missing(missing_filename, force, stdout);
if (update_name_list_str) {
list = strlist__new(true, update_name_list_str);
if (list) {
strlist__for_each(pos, list)
if (build_id_cache__update_file(pos->s, debugdir)) {
if (errno == ENOENT) {
pr_debug("%s wasn't in the cache\n",
pos->s);
continue;
}
pr_warning("Couldn't update %s: %s\n",
pos->s, strerror(errno));
}
strlist__delete(list);
}
}
return ret;
}