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Tue, 17 May 2022 06:13:50 -0700 From: Eli Cohen To: , CC: , , , Eli Cohen Subject: [PATCH v7 0/5] Show statistics for a vdpa device Date: Tue, 17 May 2022 16:13:43 +0300 Message-ID: <20220517131348.498421-1-elic@nvidia.com> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 11ed7521-07a8-47aa-9cea-08da380717ba X-MS-TrafficTypeDiagnostic: DM6PR12MB4418:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:12.22.5.235;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:InfoNoRecords;CAT:NONE;SFS:(13230001)(4636009)(36840700001)(46966006)(40470700004)(40460700003)(2906002)(7696005)(36756003)(1076003)(316002)(2616005)(107886003)(5660300002)(8936002)(86362001)(82310400005)(81166007)(356005)(186003)(110136005)(54906003)(83380400001)(70206006)(70586007)(8676002)(4326008)(26005)(47076005)(508600001)(426003)(336012)(36860700001)(6666004)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 May 2022 13:13:53.9128 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 11ed7521-07a8-47aa-9cea-08da380717ba X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[12.22.5.235];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT005.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB4418 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following four patch series adds support to read vendor statistics for a vdpa device. The first patch is just a cleanup fix. The second patch lays the ground to allow an upstream driver to provide statistics in the form of an attribute name/attribute value pairs. The third patch makes changes to locking scheme to use readers/writers semaphore instead if mutex. The fourth patch implements this for mlx5_vdpa which gives received descriptors and completed descriptors information for all the virtqueues. The fifth patch changes reslock mutex to readers/writers semaphore to achieve the same goal as done in vdpa core. Eli Cohen (5): vdpa: Fix error logic in vdpa_nl_cmd_dev_get_doit vdpa: Add support for querying vendor statistics net/vdpa: Use readers/writers semaphore instead of mutex vdpa/mlx5: Add support for reading descriptor statistics vdpa/mlx5: Use readers/writers semaphore instead of mutex v6 -> v7: 1. Add a new mlx5 patch to modify reslock from a mutex to rw_semaphore 2. Clean old comments 3. Move VDPA_ATTR_DEV_NET_CFG_MAX_VQP attribute insertion from mlx5 to vdpa core. drivers/vdpa/mlx5/core/mlx5_vdpa.h | 2 + drivers/vdpa/mlx5/net/mlx5_vnet.c | 186 ++++++++++++++++++++--- drivers/vdpa/vdpa.c | 229 +++++++++++++++++++++++++---- include/linux/mlx5/mlx5_ifc.h | 1 + include/linux/mlx5/mlx5_ifc_vdpa.h | 39 +++++ include/linux/vdpa.h | 3 + include/uapi/linux/vdpa.h | 6 + 7 files changed, 414 insertions(+), 52 deletions(-) -- 2.35.1