From 61c208a5ca94c526143830253d56de6fdb95edc2 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Mon, 1 Oct 2018 14:26:35 -0400 Subject: [PATCH] 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: Chuck Lever Signed-off-by: Anna Schumaker --- net/sunrpc/xprtrdma/verbs.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index cfaab5e31277..3ddba94c939f 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -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); } -- 2.45.2