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Subject[PATCH 06/24] perf tools: Add build_id__is_defined function
Date
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 | 7 +++++++
tools/perf/util/build-id.h | 1 +
2 files changed, 8 insertions(+)

diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index 6b410c3d52dc..7d9ecc37849c 100644
--- a/tools/perf/util/build-id.c
+++ b/tools/perf/util/build-id.c
@@ -912,3 +912,10 @@ 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)
+{
+ static u8 zero[BUILD_ID_SIZE];
+
+ return bid && bid->size ? memcmp(bid->data, &zero, 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
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