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Commit 61c208a5 authored by Chuck Lever's avatar Chuck Lever Committed by Anna Schumaker
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xprtrdma: Report when there were zero posted Receives 



To show that a caller did attempt to allocate and post more Receive
buffers, the trace point in rpcrdma_post_recvs() should report when
rpcrdma_post_recvs() was invoked but no new Receive buffers were
posted.

Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent 512ccfb6

net/sunrpc/xprtrdma/verbs.c

+5 −2
Original line number Diff line number Diff line
@@ -1521,9 +1521,11 @@ rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp) 
	struct ib_recv_wr *wr, *bad_wr;

	int needed, count, rc;



	rc = 0;

	count = 0;

	needed = buf->rb_credits + (buf->rb_bc_srv_max_requests << 1);

	if (buf->rb_posted_receives > needed)

		return;

		goto out;

	needed -= buf->rb_posted_receives;



	count = 0;
@@ -1559,7 +1561,7 @@ rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp) 
		--needed;

	}

	if (!count)

		return;

		goto out;



	rc = ib_post_recv(r_xprt->rx_ia.ri_id->qp, wr,

			  (const struct ib_recv_wr **)&bad_wr);
@@ -1573,5 +1575,6 @@ rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp) 
		}

	}

	buf->rb_posted_receives += count;

out:

	trace_xprtrdma_post_recvs(r_xprt, count, rc);

}