io_uring: include cflags in completion trace event

We should be including the completion flags for better introspection on
exactly what completion event was logged.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

fs/io_uring.c

@@ -1507,7 +1507,7 @@ static void __io_cqring_fill_event(struct io_kiocb *req, long res,
 	struct io_ring_ctx *ctx = req->ctx;
 	struct io_uring_cqe *cqe;
 
-	trace_io_uring_complete(ctx, req->user_data, res);
+	trace_io_uring_complete(ctx, req->user_data, res, cflags);
 
 	/*
 	 * If we can't get a cq entry, userspace overflowed the

include/trace/events/io_uring.h

@@ -290,29 +290,32 @@ TRACE_EVENT(io_uring_fail_link,
  * @ctx:		pointer to a ring context structure
  * @user_data:		user data associated with the request
  * @res:		result of the request
+ * @cflags:		completion flags
  *
  */
 TRACE_EVENT(io_uring_complete,
 
-	TP_PROTO(void *ctx, u64 user_data, long res),
+	TP_PROTO(void *ctx, u64 user_data, long res, unsigned cflags),
 
-	TP_ARGS(ctx, user_data, res),
+	TP_ARGS(ctx, user_data, res, cflags),
 
 	TP_STRUCT__entry (
 		__field(  void *,	ctx		)
 		__field(  u64,		user_data	)
 		__field(  long,		res		)
+		__field(  unsigned,	cflags		)
 	),
 
 	TP_fast_assign(
 		__entry->ctx		= ctx;
 		__entry->user_data	= user_data;
 		__entry->res		= res;
+		__entry->cflags		= cflags;
 	),
 
-	TP_printk("ring %p, user_data 0x%llx, result %ld",
+	TP_printk("ring %p, user_data 0x%llx, result %ld, cflags %x",
 			  __entry->ctx, (unsigned long long)__entry->user_data,
-			  __entry->res)
+			  __entry->res, __entry->cflags)
 );