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Commit 17e4c443 authored by Chuck Lever's avatar Chuck Lever Committed by Anna Schumaker
Browse files

xprtrdma: Trace marshaling failures 



Record an event when rpcrdma_marshal_req returns a non-zero return
value to help track down why an xprt close might have occurred.

Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent 4ba02e8d

include/trace/events/rpcrdma.h

+27 −0
Original line number Diff line number Diff line
@@ -511,6 +511,33 @@ TRACE_EVENT(xprtrdma_marshal, 
	)

);



TRACE_EVENT(xprtrdma_marshal_failed,

	TP_PROTO(const struct rpc_rqst *rqst,

		 int ret

	),



	TP_ARGS(rqst, ret),



	TP_STRUCT__entry(

		__field(unsigned int, task_id)

		__field(unsigned int, client_id)

		__field(u32, xid)

		__field(int, ret)

	),



	TP_fast_assign(

		__entry->task_id = rqst->rq_task->tk_pid;

		__entry->client_id = rqst->rq_task->tk_client->cl_clid;

		__entry->xid = be32_to_cpu(rqst->rq_xid);

		__entry->ret = ret;

	),



	TP_printk("task:%u@%u xid=0x%08x: ret=%d",

		__entry->task_id, __entry->client_id, __entry->xid,

		__entry->ret

	)

);



TRACE_EVENT(xprtrdma_post_send,

	TP_PROTO(

		const struct rpcrdma_req *req,

net/sunrpc/xprtrdma/rpc_rdma.c

+1 −0
Original line number Diff line number Diff line
@@ -875,6 +875,7 @@ rpcrdma_marshal_req(struct rpcrdma_xprt *r_xprt, struct rpc_rqst *rqst) 
	return 0;



out_err:

	trace_xprtrdma_marshal_failed(rqst, ret);

	switch (ret) {

	case -EAGAIN:

		xprt_wait_for_buffer_space(rqst->rq_xprt);