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[68.61.232.219]) by smtp.gmail.com with ESMTPSA id o43sm3066347qtc.23.2020.05.01.10.40.43 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 01 May 2020 10:40:43 -0700 (PDT) Received: from klimt.1015granger.net (klimt.1015granger.net [192.168.1.55]) by gateway.1015granger.net (8.14.7/8.14.7) with ESMTP id 041HegEv026771; Fri, 1 May 2020 17:40:42 GMT Subject: [PATCH v1 3/7] svcrdma: Trace page overruns when constructing RDMA Reads From: Chuck Lever To: linux-rdma@vger.kernel.org, linux-nfs@vger.kernel.org Date: Fri, 01 May 2020 13:40:42 -0400 Message-ID: <20200501174042.3899.51707.stgit@klimt.1015granger.net> In-Reply-To: <20200501173903.3899.31567.stgit@klimt.1015granger.net> References: <20200501173903.3899.31567.stgit@klimt.1015granger.net> User-Agent: StGit/0.22-20-geafe MIME-Version: 1.0 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Clean up: Replace a dprintk call site with a tracepoint. Signed-off-by: Chuck Lever --- include/trace/events/rpcrdma.h | 28 ++++++++++++++++++++++++++++ net/sunrpc/xprtrdma/svc_rdma_rw.c | 2 +- 2 files changed, 29 insertions(+), 1 deletion(-) diff --git a/include/trace/events/rpcrdma.h b/include/trace/events/rpcrdma.h index a2fc5f3fb7d9..15dc1e852a0c 100644 --- a/include/trace/events/rpcrdma.h +++ b/include/trace/events/rpcrdma.h @@ -1645,6 +1645,34 @@ TRACE_EVENT(svcrdma_no_rwctx_err, ) ); +TRACE_EVENT(svcrdma_page_overrun_err, + TP_PROTO( + const struct svcxprt_rdma *rdma, + const struct svc_rqst *rqst, + unsigned int pageno + ), + + TP_ARGS(rdma, rqst, pageno), + + TP_STRUCT__entry( + __field(unsigned int, pageno) + __field(u32, xid) + __string(device, rdma->sc_cm_id->device->name) + __string(addr, rdma->sc_xprt.xpt_remotebuf) + ), + + TP_fast_assign( + __entry->pageno = pageno; + __entry->xid = __be32_to_cpu(rqst->rq_xid); + __assign_str(device, rdma->sc_cm_id->device->name); + __assign_str(addr, rdma->sc_xprt.xpt_remotebuf); + ), + + TP_printk("addr=%s device=%s xid=0x%08x pageno=%u", __get_str(addr), + __get_str(device), __entry->xid, __entry->pageno + ) +); + TRACE_EVENT(svcrdma_send_pullup, TP_PROTO( unsigned int len diff --git a/net/sunrpc/xprtrdma/svc_rdma_rw.c b/net/sunrpc/xprtrdma/svc_rdma_rw.c index c2d49f607cfe..17098a11d2ad 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_rw.c +++ b/net/sunrpc/xprtrdma/svc_rdma_rw.c @@ -676,7 +676,7 @@ static int svc_rdma_build_read_segment(struct svc_rdma_read_info *info, return 0; out_overrun: - dprintk("svcrdma: request overruns rq_pages\n"); + trace_svcrdma_page_overrun_err(cc->cc_rdma, rqstp, info->ri_pageno); return -EINVAL; }