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-rw-r--r--samples/trace_events/trace-events-sample.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/samples/trace_events/trace-events-sample.h b/samples/trace_events/trace-events-sample.h
index 6af373236d73..4b0113f73ee9 100644
--- a/samples/trace_events/trace-events-sample.h
+++ b/samples/trace_events/trace-events-sample.h
@@ -56,7 +56,8 @@
* struct: This defines the way the data will be stored in the ring buffer.
* There are currently two types of elements. __field and __array.
* a __field is broken up into (type, name). Where type can be any
- * type but an array.
+ * primitive type (integer, long or pointer). __field_struct() can
+ * be any static complex data value (struct, union, but not an array).
* For an array. there are three fields. (type, name, size). The
* type of elements in the array, the name of the field and the size
* of the array.

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