diff options
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/perf/include/perf/event.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/tools/lib/perf/include/perf/event.h b/tools/lib/perf/include/perf/event.h index ba2dcf64f4e6..ae64090184d3 100644 --- a/tools/lib/perf/include/perf/event.h +++ b/tools/lib/perf/include/perf/event.h @@ -148,8 +148,18 @@ struct perf_record_switch { struct perf_record_header_attr { struct perf_event_header header; struct perf_event_attr attr; - __u64 id[]; -}; + /* + * Array of u64 id follows here but we cannot use a flexible array + * because size of attr in the data can be different then current + * version. Please use perf_record_header_attr_id() below. + * + * __u64 id[]; // do not use this + */ +}; + +/* Returns the pointer to id array based on the actual attr size. */ +#define perf_record_header_attr_id(evt) \ + ((void *)&(evt)->attr.attr + (evt)->attr.attr.size) enum { PERF_CPU_MAP__CPUS = 0, |