@@ -74,7 +74,10 @@ Trace events should use types as follows:
Format strings should reflect the types defined in the trace event. Take
special care to use PRId64 and PRIu64 for int64_t and uint64_t types,
-respectively. This ensures portability between 32- and 64-bit platforms.
+respectively. This ensures portability between 32- and 64-bit platforms. Note
+that format strings must begin and end with double quotes. When using
+portability macros, ensure they are preceded and followed by double quotes:
=== Hints for adding new trace events ===