From: Trond Myklebust <trond.myklebust@primarydata.com>
To: bfields@redhat.com, jlayton@redhat.com
Cc: linux-nfs@vger.kernel.org
Subject: [PATCH 1/2] SUNRPC: Fix tracepoint storage issues with svc_recv and svc_rqst_status
Date: Tue, 10 Oct 2017 13:31:42 -0400 [thread overview]
Message-ID: <20171010173143.106492-1-trond.myklebust@primarydata.com> (raw)
There is no guarantee that either the request or the svc_xprt exist
by the time we get round to printing the trace message.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
---
include/trace/events/sunrpc.h | 17 ++++++++++-------
1 file changed, 10 insertions(+), 7 deletions(-)
diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h
index 8a707f8a41c3..8a13e3903839 100644
--- a/include/trace/events/sunrpc.h
+++ b/include/trace/events/sunrpc.h
@@ -455,20 +455,22 @@ TRACE_EVENT(svc_recv,
TP_ARGS(rqst, status),
TP_STRUCT__entry(
- __field(struct sockaddr *, addr)
__field(__be32, xid)
__field(int, status)
__field(unsigned long, flags)
+ __dynamic_array(unsigned char, addr, rqst->rq_addrlen)
),
TP_fast_assign(
- __entry->addr = (struct sockaddr *)&rqst->rq_addr;
__entry->xid = status > 0 ? rqst->rq_xid : 0;
__entry->status = status;
__entry->flags = rqst->rq_flags;
+ memcpy(__get_dynamic_array(addr),
+ &rqst->rq_addr, rqst->rq_addrlen);
),
- TP_printk("addr=%pIScp xid=0x%x status=%d flags=%s", __entry->addr,
+ TP_printk("addr=%pIScp xid=0x%x status=%d flags=%s",
+ (struct sockaddr *)__get_dynamic_array(addr),
be32_to_cpu(__entry->xid), __entry->status,
show_rqstp_flags(__entry->flags))
);
@@ -513,22 +515,23 @@ DECLARE_EVENT_CLASS(svc_rqst_status,
TP_ARGS(rqst, status),
TP_STRUCT__entry(
- __field(struct sockaddr *, addr)
__field(__be32, xid)
- __field(int, dropme)
__field(int, status)
__field(unsigned long, flags)
+ __dynamic_array(unsigned char, addr, rqst->rq_addrlen)
),
TP_fast_assign(
- __entry->addr = (struct sockaddr *)&rqst->rq_addr;
__entry->xid = rqst->rq_xid;
__entry->status = status;
__entry->flags = rqst->rq_flags;
+ memcpy(__get_dynamic_array(addr),
+ &rqst->rq_addr, rqst->rq_addrlen);
),
TP_printk("addr=%pIScp rq_xid=0x%x status=%d flags=%s",
- __entry->addr, be32_to_cpu(__entry->xid),
+ (struct sockaddr *)__get_dynamic_array(addr),
+ be32_to_cpu(__entry->xid),
__entry->status, show_rqstp_flags(__entry->flags))
);
--
2.13.6
next reply other threads:[~2017-10-10 17:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-10 17:31 Trond Myklebust [this message]
2017-10-10 17:31 ` [PATCH 2/2] SUNRPC: Improve ordering of transport processing Trond Myklebust
2017-10-19 19:38 ` Chuck Lever
2017-10-19 20:33 ` J. Bruce Fields
2017-11-08 22:29 ` J. Bruce Fields
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