@@ -495,6 +495,24 @@ int parse_notes_buildid(void *note_data, size_t note_len, void *bf,
return -1;
}
+int fetch_kernel_buildid(char *buildid, int size)
+{
+ char path[PATH_MAX], *buf;
+ size_t len;
+ int err;
+
+ scnprintf(path, PATH_MAX, "%s/kernel/notes",
+ sysfs__mountpoint());
+
+ if (filename__read_str(path, &buf, &len))
+ return -EINVAL;
+
+ err = parse_notes_buildid(buf, len, buildid, size, false);
+
+ free(buf);
+ return err;
+}
+
const char *perf_tip(const char *dirpath)
{
struct strlist *tips;
@@ -48,6 +48,8 @@ extern int cacheline_size;
int fetch_kernel_version(unsigned int *puint,
char *str, size_t str_sz);
+int fetch_kernel_buildid(char *buildid, int size);
+
int parse_notes_buildid(void *note_data, size_t note_len, void *bf,
size_t size, bool need_swap);
Adding fetch_kernel_buildid helper function to retrieve build id from running kernel. It will be used in following patches. Link: http://lkml.kernel.org/n/tip-at98orsncas8v2ito61u3qod@git.kernel.org Signed-off-by: Jiri Olsa <jolsa@kernel.org> --- tools/perf/util/util.c | 18 ++++++++++++++++++ tools/perf/util/util.h | 2 ++ 2 files changed, 20 insertions(+)