From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 92440C43219 for ; Mon, 29 Apr 2019 23:37:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6009E2075E for ; Mon, 29 Apr 2019 23:37:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="tWXB5Cfy" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729205AbfD2Xhj (ORCPT ); Mon, 29 Apr 2019 19:37:39 -0400 Received: from userp2120.oracle.com ([156.151.31.85]:58930 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728748AbfD2Xhi (ORCPT ); Mon, 29 Apr 2019 19:37:38 -0400 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x3TNZB9K189983; Mon, 29 Apr 2019 23:37:30 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type : content-transfer-encoding; s=corp-2018-07-02; bh=6hGEu2HZD/8YP3WoOCHTAZ2nyJdSrukF5yTJrl/RG7M=; b=tWXB5CfyM3dhTDNHDRLT0QeQJvUwNZDzpfPnkBqh/byAmNNxZGW5qBYPVptDxubPpJzD taJiUB07nU8hhQRmagcmykLj8PLkzerNkTntJKE/FfR6xBPzoLPGTuABAhmExPRNJm7j 2mqutg3oSL7ndQTbZyZUA6CGSuyNjRxwTmYbbne8qyT0WM0UknFkZgswYHJVXpyveEK0 r7xRbzH0OTKEHwxPImUy81YG4O27U7Hn2b5XwXMmpzUflp4Su0sdwHjKtJ6U+diBBnmP m3XdmC6P8ZfTAvQ/0gMxuKjD75GJFjesRFOy37Bh0wNHFZ/nyw8jLyvCzNTZgWPFbW1z aQ== Received: from userp3020.oracle.com (userp3020.oracle.com [156.151.31.79]) by userp2120.oracle.com with ESMTP id 2s4fqq1aud-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 29 Apr 2019 23:37:30 +0000 Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x3TNbTFe116698; Mon, 29 Apr 2019 23:37:29 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userp3020.oracle.com with ESMTP id 2s5u50nwjv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 29 Apr 2019 23:37:29 +0000 Received: from abhmp0015.oracle.com (abhmp0015.oracle.com [141.146.116.21]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id x3TNbQTF032565; Mon, 29 Apr 2019 23:37:26 GMT Received: from userv0022.oracle.com (/10.11.38.116) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 29 Apr 2019 16:37:26 -0700 From: Santosh Shilimkar To: netdev@vger.kernel.org, davem@davemloft.net Cc: santosh.shilimkar@oracle.com Subject: [net-next][PATCH v2 2/2] rds: add sysctl for rds support of On-Demand-Paging Date: Mon, 29 Apr 2019 16:37:20 -0700 Message-Id: <1556581040-4812-3-git-send-email-santosh.shilimkar@oracle.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1556581040-4812-1-git-send-email-santosh.shilimkar@oracle.com> References: <1556581040-4812-1-git-send-email-santosh.shilimkar@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9242 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1904290153 X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9242 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1904290153 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org RDS doesn't support RDMA on memory apertures that require On Demand Paging (ODP), such as FS DAX memory. A sysctl is added to indicate whether RDMA requiring ODP is supported. Reviewed-by: Håkon Bugge Reviewed-tested-by: Zhu Yanjun Signed-off-by: Hans Westgaard Ry Signed-off-by: Santosh Shilimkar --- net/rds/ib.h | 1 + net/rds/ib_sysctl.c | 8 ++++++++ 2 files changed, 9 insertions(+) diff --git a/net/rds/ib.h b/net/rds/ib.h index 67a715b..80e11ef 100644 --- a/net/rds/ib.h +++ b/net/rds/ib.h @@ -457,5 +457,6 @@ unsigned int rds_ib_stats_info_copy(struct rds_info_iterator *iter, extern unsigned long rds_ib_sysctl_max_unsig_bytes; extern unsigned long rds_ib_sysctl_max_recv_allocation; extern unsigned int rds_ib_sysctl_flow_control; +extern unsigned int rds_ib_sysctl_odp_support; #endif diff --git a/net/rds/ib_sysctl.c b/net/rds/ib_sysctl.c index e4e41b3..7cc02cd 100644 --- a/net/rds/ib_sysctl.c +++ b/net/rds/ib_sysctl.c @@ -60,6 +60,7 @@ * will cause credits to be added before protocol negotiation. */ unsigned int rds_ib_sysctl_flow_control = 0; +unsigned int rds_ib_sysctl_odp_support; static struct ctl_table rds_ib_sysctl_table[] = { { @@ -103,6 +104,13 @@ .mode = 0644, .proc_handler = proc_dointvec, }, + { + .procname = "odp_support", + .data = &rds_ib_sysctl_odp_support, + .maxlen = sizeof(rds_ib_sysctl_odp_support), + .mode = 0444, + .proc_handler = proc_dointvec, + }, { } }; -- 1.9.1