Commit e3d6bf0a authored by Steven Rostedt's avatar Steven Rostedt

ring-buffer: replace sizeof of event header with offsetof

Impact: fix to possible alignment problems on some archs.

Some arch compilers include an NULL char array in the sizeof field.
Since the ring_buffer_event type includes one of these, it is better
to use the "offsetof" instead, to avoid strange bugs on these archs.
Signed-off-by: default avatarSteven Rostedt <srostedt@redhat.com>
parent ef7a4a16
......@@ -132,7 +132,7 @@ void ring_buffer_normalize_time_stamp(int cpu, u64 *ts)
}
EXPORT_SYMBOL_GPL(ring_buffer_normalize_time_stamp);
#define RB_EVNT_HDR_SIZE (sizeof(struct ring_buffer_event))
#define RB_EVNT_HDR_SIZE (offsetof(struct ring_buffer_event, array))
#define RB_ALIGNMENT 4U
#define RB_MAX_SMALL_DATA 28
......
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