Commit cf85cf8e authored by Stefan Hajnoczi's avatar Stefan Hajnoczi Committed by Blue Swirl

trace: Format strings must begin/end with double quotes

Document the restriction that format strings must begin and end with
double quotes.  This is for easy parsing since we don't run cpp over
trace-events.
Signed-off-by: default avatarStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: default avatarBlue Swirl <blauwirbel@gmail.com>
parent d8023f31
......@@ -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:
"value %"PRIx64"".
=== Hints for adding new trace events ===
......
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