[PATCH 07/25] perf tools: Add build_id__is_defined function

Jiri Olsa
2020-11-26T17:01:30Z

Adding build_id__is_defined helper to check build id
is defined and is != zero build id.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/util/build-id.c | 6 ++++++
tools/perf/util/build-id.h | 1 +
2 files changed, 7 insertions(+)

diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index 6b410c3d52dc..2aacc8b29f7e 100644
--- a/tools/perf/util/build-id.c
+++ b/tools/perf/util/build-id.c
@@ -37,6 +37,7 @@

#include <linux/ctype.h>
#include <linux/zalloc.h>
+#include <linux/string.h>
#include <asm/bug.h>

static bool no_buildid_cache;
@@ -912,3 +913,8 @@ void build_id__init(struct build_id *bid, const u8 *data, size_t size)
memcpy(bid->data, data, size);
bid->size = size;
}
+
+bool build_id__is_defined(const struct build_id *bid)
+{
+ return bid && bid->size ? !!memchr_inv(bid->data, 0, bid->size) : false;
+}
diff --git a/tools/perf/util/build-id.h b/tools/perf/util/build-id.h
index f293f99d5dba..d53415feaf69 100644
--- a/tools/perf/util/build-id.h
+++ b/tools/perf/util/build-id.h
@@ -21,6 +21,7 @@ struct feat_fd;

void build_id__init(struct build_id *bid, const u8 *data, size_t size);
int build_id__sprintf(const struct build_id *build_id, char *bf);
+bool build_id__is_defined(const struct build_id *bid);
int sysfs__sprintf_build_id(const char *root_dir, char *sbuild_id);
int filename__sprintf_build_id(const char *pathname, char *sbuild_id);
char *build_id_cache__kallsyms_path(const char *sbuild_id, char *bf,
--
2.26.2