SUNRPC: Split the xdr_buf event class

To help tie the recorded xdr_buf to a particular RPC transaction,
the client side version of this class should display task ID
information and the server side one should show the request's XID.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

net/sunrpc/clnt.c

@@ -1270,7 +1270,7 @@ void rpc_prepare_reply_pages(struct rpc_rqst *req, struct page **pages,
 	hdrsize += RPC_REPHDRSIZE + req->rq_cred->cr_auth->au_ralign - 1;
 
 	xdr_inline_pages(&req->rq_rcv_buf, hdrsize << 2, pages, base, len);
-	trace_rpc_reply_pages(req);
+	trace_rpc_xdr_reply_pages(req->rq_task, &req->rq_rcv_buf);
 }
 EXPORT_SYMBOL_GPL(rpc_prepare_reply_pages);
 
@@ -2532,7 +2532,7 @@ call_decode(struct rpc_task *task)
 		goto out;
 
 	req->rq_rcv_buf.len = req->rq_private_buf.len;
-	trace_xprt_recvfrom(&req->rq_rcv_buf);
+	trace_rpc_xdr_recvfrom(task, &req->rq_rcv_buf);
 
 	/* Check that the softirq receive buffer is valid */
 	WARN_ON(memcmp(&req->rq_rcv_buf, &req->rq_private_buf,

net/sunrpc/svc_xprt.c

@@ -812,7 +812,7 @@ static int svc_handle_xprt(struct svc_rqst *rqstp, struct svc_xprt *xprt)
 		else
 			len = xprt->xpt_ops->xpo_recvfrom(rqstp);
 		if (len > 0)
-			trace_svc_recvfrom(&rqstp->rq_arg);
+			trace_svc_xdr_recvfrom(rqstp, &rqstp->rq_arg);
 		rqstp->rq_stime = ktime_get();
 		rqstp->rq_reserved = serv->sv_max_mesg;
 		atomic_add(rqstp->rq_reserved, &xprt->xpt_reserved);
@@ -913,7 +913,7 @@ int svc_send(struct svc_rqst *rqstp)
 	xb->len = xb->head[0].iov_len +
 		xb->page_len +
 		xb->tail[0].iov_len;
-	trace_svc_sendto(xb);
+	trace_svc_xdr_sendto(rqstp, xb);
 
 	/* Grab mutex to serialize outgoing data. */
 	mutex_lock(&xprt->xpt_mutex);

net/sunrpc/xprt.c

@@ -1460,7 +1460,7 @@ xprt_request_transmit(struct rpc_rqst *req, struct rpc_task *snd_task)
 	 */
 	req->rq_ntrans++;
 
-	trace_xprt_sendto(&req->rq_snd_buf);
+	trace_rpc_xdr_sendto(task, &req->rq_snd_buf);
 	connect_cookie = xprt->connect_cookie;
 	status = xprt->ops->send_request(req);
 	if (status != 0) {