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Sun, 26 Sep 2021 14:55:22 +0000 Received: from HQMAIL107.nvidia.com (172.20.187.13) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Sun, 26 Sep 2021 14:55:22 +0000 Received: from r-arch-stor02.mtr.labs.mlnx (172.20.187.5) by mail.nvidia.com (172.20.187.13) with Microsoft SMTP Server id 15.0.1497.18 via Frontend Transport; Sun, 26 Sep 2021 14:55:19 +0000 From: Max Gurtovoy To: , , , CC: , , , , , , "Max Gurtovoy" Subject: [PATCH 1/2] virtio: introduce virtio_dev_to_node helper Date: Sun, 26 Sep 2021 17:55:17 +0300 Message-ID: <20210926145518.64164-1-mgurtovoy@nvidia.com> X-Mailer: git-send-email 2.18.1 MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 21971e1f-abe1-42df-4ad0-08d980fdaabc X-MS-TrafficTypeDiagnostic: MN2PR12MB2973: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6790; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Sep 2021 14:55:22.8004 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 21971e1f-abe1-42df-4ad0-08d980fdaabc X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.112.34];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT056.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB2973 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Also expose numa_node field as a sysfs attribute. Now virtio device drivers will be able to allocate memory that is node-local to the device. This significantly helps performance and it's oftenly used in other drivers such as NVMe, for example. Signed-off-by: Max Gurtovoy Reviewed-by: Stefan Hajnoczi --- drivers/virtio/virtio.c | 10 ++++++++++ include/linux/virtio.h | 13 +++++++++++++ 2 files changed, 23 insertions(+) diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index 588e02fb91d3..bdbd76c5c58c 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -60,12 +60,22 @@ static ssize_t features_show(struct device *_d, } static DEVICE_ATTR_RO(features); +static ssize_t numa_node_show(struct device *_d, + struct device_attribute *attr, char *buf) +{ + struct virtio_device *vdev = dev_to_virtio(_d); + + return sysfs_emit(buf, "%d\n", virtio_dev_to_node(vdev)); +} +static DEVICE_ATTR_RO(numa_node); + static struct attribute *virtio_dev_attrs[] = { &dev_attr_device.attr, &dev_attr_vendor.attr, &dev_attr_status.attr, &dev_attr_modalias.attr, &dev_attr_features.attr, + &dev_attr_numa_node.attr, NULL, }; ATTRIBUTE_GROUPS(virtio_dev); diff --git a/include/linux/virtio.h b/include/linux/virtio.h index 41edbc01ffa4..05b586ac71d1 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -125,6 +125,19 @@ static inline struct virtio_device *dev_to_virtio(struct device *_dev) return container_of(_dev, struct virtio_device, dev); } +/** + * virtio_dev_to_node - return the NUMA node for a given virtio device + * @vdev: device to get the NUMA node for. + */ +static inline int virtio_dev_to_node(struct virtio_device *vdev) +{ + struct device *parent = vdev->dev.parent; + + if (!parent) + return NUMA_NO_NODE; + return dev_to_node(parent); +} + void virtio_add_status(struct virtio_device *dev, unsigned int status); int register_virtio_device(struct virtio_device *dev); void unregister_virtio_device(struct virtio_device *dev); From patchwork Sun Sep 26 14:55:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Max Gurtovoy X-Patchwork-Id: 12518315 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13AE4C433FE for ; Sun, 26 Sep 2021 14:55:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F0A6F61041 for ; 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Sun, 26 Sep 2021 14:55:25 +0000 Received: from HQMAIL107.nvidia.com (172.20.187.13) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Sun, 26 Sep 2021 14:55:25 +0000 Received: from r-arch-stor02.mtr.labs.mlnx (172.20.187.5) by mail.nvidia.com (172.20.187.13) with Microsoft SMTP Server id 15.0.1497.18 via Frontend Transport; Sun, 26 Sep 2021 14:55:22 +0000 From: Max Gurtovoy To: , , , CC: , , , , , , "Max Gurtovoy" Subject: [PATCH 2/2] virtio-blk: set NUMA affinity for a tagset Date: Sun, 26 Sep 2021 17:55:18 +0300 Message-ID: <20210926145518.64164-2-mgurtovoy@nvidia.com> X-Mailer: git-send-email 2.18.1 In-Reply-To: <20210926145518.64164-1-mgurtovoy@nvidia.com> References: <20210926145518.64164-1-mgurtovoy@nvidia.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: a80d816b-8e36-4eb7-87f6-08d980fdac9d X-MS-TrafficTypeDiagnostic: DM6PR12MB3771: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:1013; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Sep 2021 14:55:25.9592 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a80d816b-8e36-4eb7-87f6-08d980fdac9d X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.112.35];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT023.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB3771 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org To optimize performance, set the affinity of the block device tagset according to the virtio device affinity. Signed-off-by: Max Gurtovoy --- drivers/block/virtio_blk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 9b3bd083b411..1c68c3e0ebf9 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -774,7 +774,7 @@ static int virtblk_probe(struct virtio_device *vdev) memset(&vblk->tag_set, 0, sizeof(vblk->tag_set)); vblk->tag_set.ops = &virtio_mq_ops; vblk->tag_set.queue_depth = queue_depth; - vblk->tag_set.numa_node = NUMA_NO_NODE; + vblk->tag_set.numa_node = virtio_dev_to_node(vdev); vblk->tag_set.flags = BLK_MQ_F_SHOULD_MERGE; vblk->tag_set.cmd_size = sizeof(struct virtblk_req) +