xprtrdma: Clean up reply parsing error tracepoints

- Rename the tracepoints with the "_err" suffix to indicate these
  are rare error events
- Replace display of kernel memory addresses
- Tie the XID and error to a connection IP address instead

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

diff --git a/include/trace/events/rpcrdma.h b/include/trace/events/rpcrdma.h
index b0750c0d2753e84abf9b3397a3e66ded00d7a439..93d717d8139f9858c70da30089ded2858036d994 100644 (file)
--- a/include/trace/events/rpcrdma.h
+++ b/include/trace/events/rpcrdma.h
@@ -60,7 +60,7 @@ DECLARE_EVENT_CLASS(rpcrdma_completion_class,
                                ),                                      \
                                TP_ARGS(wc, cid))
 
-DECLARE_EVENT_CLASS(xprtrdma_reply_event,
+DECLARE_EVENT_CLASS(xprtrdma_reply_class,
        TP_PROTO(
                const struct rpcrdma_rep *rep
        ),
@@ -68,29 +68,30 @@ DECLARE_EVENT_CLASS(xprtrdma_reply_event,
        TP_ARGS(rep),
 
        TP_STRUCT__entry(
-               __field(const void *, rep)
-               __field(const void *, r_xprt)
                __field(u32, xid)
                __field(u32, version)
                __field(u32, proc)
+               __string(addr, rpcrdma_addrstr(rep->rr_rxprt))
+               __string(port, rpcrdma_portstr(rep->rr_rxprt))
        ),
 
        TP_fast_assign(
-               __entry->rep = rep;
-               __entry->r_xprt = rep->rr_rxprt;
                __entry->xid = be32_to_cpu(rep->rr_xid);
                __entry->version = be32_to_cpu(rep->rr_vers);
                __entry->proc = be32_to_cpu(rep->rr_proc);
+               __assign_str(addr, rpcrdma_addrstr(rep->rr_rxprt));
+               __assign_str(port, rpcrdma_portstr(rep->rr_rxprt));
        ),
 
-       TP_printk("rxprt %p xid=0x%08x rep=%p: version %u proc %u",
-               __entry->r_xprt, __entry->xid, __entry->rep,
-               __entry->version, __entry->proc
+       TP_printk("peer=[%s]:%s xid=0x%08x version=%u proc=%u",
+               __get_str(addr), __get_str(port),
+               __entry->xid, __entry->version, __entry->proc
        )
 );
 
 #define DEFINE_REPLY_EVENT(name)                                       \
-               DEFINE_EVENT(xprtrdma_reply_event, name,                \
+               DEFINE_EVENT(xprtrdma_reply_class,                      \
+                               xprtrdma_reply_##name##_err,            \
                                TP_PROTO(                               \
                                        const struct rpcrdma_rep *rep   \
                                ),                                      \
@@ -1030,10 +1031,10 @@ TRACE_EVENT(xprtrdma_defer_cmp,
        )
 );
 
-DEFINE_REPLY_EVENT(xprtrdma_reply_vers);
-DEFINE_REPLY_EVENT(xprtrdma_reply_rqst);
-DEFINE_REPLY_EVENT(xprtrdma_reply_short);
-DEFINE_REPLY_EVENT(xprtrdma_reply_hdr);
+DEFINE_REPLY_EVENT(vers);
+DEFINE_REPLY_EVENT(rqst);
+DEFINE_REPLY_EVENT(short);
+DEFINE_REPLY_EVENT(hdr);
 
 TRACE_EVENT(xprtrdma_err_vers,
        TP_PROTO(

diff --git a/net/sunrpc/xprtrdma/rpc_rdma.c b/net/sunrpc/xprtrdma/rpc_rdma.c
index c178f93aa40b653c85368a736f1e07a2a48f47f5..29f847c8f609486fb898ab14905b408091fd354d 100644 (file)
--- a/net/sunrpc/xprtrdma/rpc_rdma.c
+++ b/net/sunrpc/xprtrdma/rpc_rdma.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
- * Copyright (c) 2014-2017 Oracle.  All rights reserved.
+ * Copyright (c) 2014-2020, Oracle and/or its affiliates.
  * Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved.
  *
  * This software is available to you under a choice of one of two
@@ -1369,7 +1369,7 @@ out:
        return;
 
 out_badheader:
-       trace_xprtrdma_reply_hdr(rep);
+       trace_xprtrdma_reply_hdr_err(rep);
        r_xprt->rx_stats.bad_reply_count++;
        rqst->rq_task->tk_status = status;
        status = 0;
@@ -1462,16 +1462,16 @@ void rpcrdma_reply_handler(struct rpcrdma_rep *rep)
        return;
 
 out_badversion:
-       trace_xprtrdma_reply_vers(rep);
+       trace_xprtrdma_reply_vers_err(rep);
        goto out;
 
 out_norqst:
        spin_unlock(&xprt->queue_lock);
-       trace_xprtrdma_reply_rqst(rep);
+       trace_xprtrdma_reply_rqst_err(rep);
        goto out;
 
 out_shortreply:
-       trace_xprtrdma_reply_short(rep);
+       trace_xprtrdma_reply_short_err(rep);
 
 out:
        rpcrdma_recv_buffer_put(rep);