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SUNRPC: Replace dprintk() call site in xs_nospace()

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"no socket space" is an exceptional and infrequent condition
that troubleshooters want to know about.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Chuck Lever 2020-07-08 16:09:32 -04:00 committed by Anna Schumaker
parent 9ce07ae5eb
commit 015747d296
2 changed files with 29 additions and 4 deletions
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28
include/trace/events/sunrpc.h
View File

@ -898,6 +898,34 @@ DEFINE_RPC_SOCKET_EVENT_DONE(rpc_socket_reset_connection);
DEFINE_RPC_SOCKET_EVENT(rpc_socket_close);
DEFINE_RPC_SOCKET_EVENT(rpc_socket_shutdown);
TRACE_EVENT(rpc_socket_nospace,
TP_PROTO(
const struct rpc_rqst *rqst,
const struct sock_xprt *transport
),
TP_ARGS(rqst, transport),
TP_STRUCT__entry(
__field(unsigned int, task_id)
__field(unsigned int, client_id)
__field(unsigned int, total)
__field(unsigned int, remaining)
),
TP_fast_assign(
__entry->task_id = rqst->rq_task->tk_pid;
__entry->client_id = rqst->rq_task->tk_client->cl_clid;
__entry->total = rqst->rq_slen;
__entry->remaining = rqst->rq_slen - transport->xmit.offset;
),
TP_printk("task:%u@%u total=%u remaining=%u",
__entry->task_id, __entry->client_id,
__entry->total, __entry->remaining
)
);
TRACE_DEFINE_ENUM(XPRT_LOCKED);
TRACE_DEFINE_ENUM(XPRT_CONNECTED);
TRACE_DEFINE_ENUM(XPRT_CONNECTING);

5
net/sunrpc/xprtsock.c
View File

@ -762,10 +762,7 @@ static int xs_nospace(struct rpc_rqst *req)
struct sock *sk = transport->inet;
int ret = -EAGAIN;
dprintk("RPC: %5u xmit incomplete (%u left of %u)\n",
req->rq_task->tk_pid,
req->rq_slen - transport->xmit.offset,
req->rq_slen);
trace_rpc_socket_nospace(req, transport);
/* Protect against races with write_space */
spin_lock(&xprt->transport_lock);