Messages in this thread Patch in this message | | | From | Jiri Olsa <> | Subject | [PATCH 06/24] perf tools: Add build_id__is_defined function | Date | Mon, 9 Nov 2020 22:53:57 +0100 |
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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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