Return-Path: Received: from mail-it0-f68.google.com ([209.85.214.68]:53607 "EHLO mail-it0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727772AbeIJUFK (ORCPT ); Mon, 10 Sep 2018 16:05:10 -0400 Subject: [PATCH v1 19/22] xprtrdma: Report when there were zero posted Receives From: Chuck Lever To: linux-rdma@vger.kernel.org, linux-nfs@vger.kernel.org Date: Mon, 10 Sep 2018 11:10:36 -0400 Message-ID: <20180910151036.10564.44123.stgit@manet.1015granger.net> In-Reply-To: <20180910150040.10564.97487.stgit@manet.1015granger.net> References: <20180910150040.10564.97487.stgit@manet.1015granger.net> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Sender: linux-nfs-owner@vger.kernel.org List-ID: 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 --- 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 74f6de3..0c56fe5 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -1521,9 +1521,11 @@ struct rpcrdma_regbuf * 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 @@ struct rpcrdma_regbuf * --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 @@ struct rpcrdma_regbuf * } } buf->rb_posted_receives += count; +out: trace_xprtrdma_post_recvs(r_xprt, count, rc); }