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authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>2015-02-27 07:50:26 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-02-27 21:52:33 +0300
commit8d8c8e4cb3014fcc51f0e127b4316043306f5bb0 (patch)
tree1fe04d062c0cd6041fbeaf1324a3f57cf2ad0536 /tools/perf/util/build-id.c
parent7335399a6a4bead9ef8b59ce7d811fc4e99ca98c (diff)
downloadlinux-8d8c8e4cb3014fcc51f0e127b4316043306f5bb0.tar.xz
perf buildid-cache: Add --purge FILE to remove all caches of FILE
Add --purge FILE to remove all caches of FILE. Since the current --remove FILE removes a cache which has same build-id of given FILE. Since the command takes a FILE path, it can confuse user who tries to remove cache about FILE path. ----- # ./perf buildid-cache -v --add ./perf Adding 133b7b5486d987a5ab5c3ebf4ea14941f45d4d4f ./perf: Ok # (update the ./perf binary) # ./perf buildid-cache -v --remove ./perf Removing 305bbd1be68f66eca7e2d78db294653031edfa79 ./perf: FAIL ./perf wasn't in the cache ----- Actually, the --remove's FAIL is not shown, it just silently fails. So, this patch adds --purge FILE action for such usecase. perf buildid-cache --purge FILE removes all caches which has same FILE path. In other words, it removes all caches including old binaries. ----- # ./perf buildid-cache -v --add ./perf Adding 133b7b5486d987a5ab5c3ebf4ea14941f45d4d4f ./perf: Ok # (update the ./perf binary) # ./perf buildid-cache -v --purge ./perf Removing 133b7b5486d987a5ab5c3ebf4ea14941f45d4d4f ./perf: Ok ----- BTW, if you want to purge all the caches, remove ~/.debug/* . Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20150227045026.1999.64084.stgit@localhost.localdomain [ s/dirname/dir_name/g to fix build on fedora14, where dirname is a global ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/build-id.c')
-rw-r--r--tools/perf/util/build-id.c93
1 files changed, 76 insertions, 17 deletions
diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index 0bc33be5a78c..ffdc338df925 100644
--- a/tools/perf/util/build-id.c
+++ b/tools/perf/util/build-id.c
@@ -281,35 +281,93 @@ void disable_buildid_cache(void)
no_buildid_cache = true;
}
+static char *build_id_cache__dirname_from_path(const char *name,
+ bool is_kallsyms, bool is_vdso)
+{
+ char *realname = (char *)name, *filename;
+ bool slash = is_kallsyms || is_vdso;
+
+ if (!slash) {
+ realname = realpath(name, NULL);
+ if (!realname)
+ return NULL;
+ }
+
+ if (asprintf(&filename, "%s%s%s", buildid_dir, slash ? "/" : "",
+ is_vdso ? DSO__NAME_VDSO : realname) < 0)
+ filename = NULL;
+
+ if (!slash)
+ free(realname);
+
+ return filename;
+}
+
+int build_id_cache__list_build_ids(const char *pathname,
+ struct strlist **result)
+{
+ struct strlist *list;
+ char *dir_name;
+ DIR *dir;
+ struct dirent *d;
+ int ret = 0;
+
+ list = strlist__new(true, NULL);
+ dir_name = build_id_cache__dirname_from_path(pathname, false, false);
+ if (!list || !dir_name) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ /* List up all dirents */
+ dir = opendir(dir_name);
+ if (!dir) {
+ ret = -errno;
+ goto out;
+ }
+
+ while ((d = readdir(dir)) != NULL) {
+ if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
+ continue;
+ strlist__add(list, d->d_name);
+ }
+ closedir(dir);
+
+out:
+ free(dir_name);
+ if (ret)
+ strlist__delete(list);
+ else
+ *result = list;
+
+ return ret;
+}
+
int build_id_cache__add_s(const char *sbuild_id, const char *name,
bool is_kallsyms, bool is_vdso)
{
const size_t size = PATH_MAX;
- char *realname, *filename = zalloc(size),
+ char *realname = NULL, *filename = NULL, *dir_name = NULL,
*linkname = zalloc(size), *targetname, *tmp;
- int len, err = -1;
- bool slash = is_kallsyms || is_vdso;
+ int err = -1;
- if (is_kallsyms) {
- if (symbol_conf.kptr_restrict) {
- pr_debug("Not caching a kptr_restrict'ed /proc/kallsyms\n");
- err = 0;
- goto out_free;
- }
- realname = (char *) name;
- } else
+ if (!is_kallsyms) {
realname = realpath(name, NULL);
+ if (!realname)
+ goto out_free;
+ }
- if (realname == NULL || filename == NULL || linkname == NULL)
+ dir_name = build_id_cache__dirname_from_path(name, is_kallsyms, is_vdso);
+ if (!dir_name)
goto out_free;
- len = scnprintf(filename, size, "%s%s%s",
- buildid_dir, slash ? "/" : "",
- is_vdso ? DSO__NAME_VDSO : realname);
- if (mkdir_p(filename, 0755))
+ if (mkdir_p(dir_name, 0755))
goto out_free;
- snprintf(filename + len, size - len, "/%s", sbuild_id);
+ if (asprintf(&filename, "%s/%s", dir_name, sbuild_id) < 0) {
+ filename = NULL;
+ goto out_free;
+ }
if (access(filename, F_OK)) {
if (is_kallsyms) {
@@ -337,6 +395,7 @@ out_free:
if (!is_kallsyms)
free(realname);
free(filename);
+ free(dir_name);
free(linkname);
return err;
}