io_uring: remove io_uring_add_to_prev() trace event

This internal logic was killed with the conversion to io-wq, so we no
longer have a need for this particular trace. Kill it.

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

diff --git a/include/trace/events/io_uring.h b/include/trace/events/io_uring.h
index b85255121b9858a1e38ae0853d0c572ab3c7a68f..8f21d8bf20fd4802fac4f2c03f60d4f83dc5ca63 100644 (file)
--- a/include/trace/events/io_uring.h
+++ b/include/trace/events/io_uring.h
@@ -227,35 +227,6 @@ TRACE_EVENT(io_uring_link,
                          __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
  *