diff options
Diffstat (limited to 'tools/perf/util/header.c')
| -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 d7e67b1..64a85ba 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) /* * We set id to -1 if the data file doesn't contain sample - * ids. Check for this and avoid walking through the entire - * list of ids which may be large. + * ids. This can happen when the data file contains one type + * of event and in that case, the header can still store the + * event attribute information. Check for this and avoid + * walking through the entire list of ids which may be large. */ - if (id == -1ULL) + if (id == -1ULL) { + if (header->attrs > 0) + return &header->attr[0]->attr; return NULL; + } for (i = 0; i < header->attrs; i++) { struct perf_header_attr *attr = header->attr[i]; |