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-rw-r--r--include/uapi/linux/perf_event.h1
-rw-r--r--kernel/events/ring_buffer.c2
2 files changed, 2 insertions, 1 deletions
diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index bec0aad0e15c..d09a9cd021b1 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -915,6 +915,7 @@ enum perf_callchain_context {
*/
#define PERF_AUX_FLAG_TRUNCATED 0x01 /* record was truncated to fit */
#define PERF_AUX_FLAG_OVERWRITE 0x02 /* snapshot from overwrite mode */
+#define PERF_AUX_FLAG_PARTIAL 0x04 /* record contains gaps */
#define PERF_FLAG_FD_NO_GROUP (1UL << 0)
#define PERF_FLAG_FD_OUTPUT (1UL << 1)
diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c
index 9654e55c38d6..2831480c63a2 100644
--- a/kernel/events/ring_buffer.c
+++ b/kernel/events/ring_buffer.c
@@ -424,8 +424,8 @@ err:
*/
void perf_aux_output_end(struct perf_output_handle *handle, unsigned long size)
{
+ bool wakeup = !!(handle->aux_flags & PERF_AUX_FLAG_TRUNCATED);
struct ring_buffer *rb = handle->rb;
- bool wakeup = !!handle->aux_flags;
unsigned long aux_head;
/* in overwrite mode, driver provides aux_head via handle */