diff options
Diffstat (limited to 'tools/perf/lib')
| -rw-r--r-- | tools/perf/lib/include/internal/mmap.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/lib/include/internal/mmap.h b/tools/perf/lib/include/internal/mmap.h index 47c09f375fb6..10653b6e864e 100644 --- a/tools/perf/lib/include/internal/mmap.h +++ b/tools/perf/lib/include/internal/mmap.h @@ -2,10 +2,14 @@ #ifndef __LIBPERF_INTERNAL_MMAP_H #define __LIBPERF_INTERNAL_MMAP_H +#include <linux/compiler.h> #include <linux/refcount.h> #include <linux/types.h> #include <stdbool.h> +/* perf sample has 16 bits size limit */ +#define PERF_SAMPLE_MAX_SIZE (1 << 16) + /** * struct perf_mmap - perf's ring buffer mmap details * @@ -21,6 +25,7 @@ struct perf_mmap { u64 start; u64 end; bool overwrite; + char event_copy[PERF_SAMPLE_MAX_SIZE] __aligned(8); }; #endif /* __LIBPERF_INTERNAL_MMAP_H */ |