io_uring: remove io_uring_add_to_prev() trace event

			  __entry->ctx, __entry->req, __entry->target_req)

);

/**

 * io_uring_add_to_prev - called after a request was added into a previously

 * 						  submitted work

 *

 * @req:	pointer to a request, added to a previous

 * @ret:	whether or not it was completed successfully

 *

 * Allows to track merged work, to figure out how often requests are piggy

 * backed into other ones, changing the execution flow.

 */

TRACE_EVENT(io_uring_add_to_prev,

	TP_PROTO(void *req, bool ret),

	TP_ARGS(req, ret),

	TP_STRUCT__entry (

		__field(  void *,	req	)

		__field(  bool,		ret	)

	),

	TP_fast_assign(

		__entry->req	= req;

		__entry->ret	= ret;

	),

	TP_printk("request %p, ret %d", __entry->req, __entry->ret)

);

/**

 * io_uring_cqring_wait - called before start waiting for an available CQE

 *