diff options
Diffstat (limited to 'tools/perf')
-rw-r--r-- | tools/perf/util/header.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index d7e67b167ea3..64a85bafde63 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c | |||
@@ -946,11 +946,16 @@ perf_header__find_attr(u64 id, struct perf_header *header) | |||
946 | 946 | ||
947 | /* | 947 | /* |
948 | * We set id to -1 if the data file doesn't contain sample | 948 | * We set id to -1 if the data file doesn't contain sample |
949 | * ids. Check for this and avoid walking through the entire | 949 | * ids. This can happen when the data file contains one type |
950 | * list of ids which may be large. | 950 | * of event and in that case, the header can still store the |
951 | * event attribute information. Check for this and avoid | ||
952 | * walking through the entire list of ids which may be large. | ||
951 | */ | 953 | */ |
952 | if (id == -1ULL) | 954 | if (id == -1ULL) { |
955 | if (header->attrs > 0) | ||
956 | return &header->attr[0]->attr; | ||
953 | return NULL; | 957 | return NULL; |
958 | } | ||
954 | 959 | ||
955 | for (i = 0; i < header->attrs; i++) { | 960 | for (i = 0; i < header->attrs; i++) { |
956 | struct perf_header_attr *attr = header->attr[i]; | 961 | struct perf_header_attr *attr = header->attr[i]; |