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Mon, 9 Jun 2025 23:26:29 -0700 From: Gal Pressman To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andrew Lunn , CC: Aaron Conole , Eelco Chaudron , Ilya Maximets , Simon Horman , Sebastian Andrzej Siewior , Clark Williams , Steven Rostedt , , , Gal Pressman Subject: [PATCH net 0/3] Revert openvswitch per-CPU storage Date: Tue, 10 Jun 2025 09:26:28 +0300 Message-ID: <20250610062631.1645885-1-gal@nvidia.com> X-Mailer: git-send-email 2.40.1 Precedence: bulk X-Mailing-List: linux-rt-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: AnonymousSubmission X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SA2PEPF00001504:EE_|LV8PR12MB9360:EE_ X-MS-Office365-Filtering-Correlation-Id: 0a4c484b-f317-4796-0792-08dda7e7c596 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|36860700013|7416014|376014|82310400026; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?WJOkcKT48f4o2StulPJlkTXFh+lPsZdyAkA33ql0IBJTu9Ksx7RFGsu953Cq?= =?us-ascii?Q?B28DeSOUgNlNBSsBsJ5goJvyl/SiKge484D1X+pnk34j33e7sAPnv4tfgvk7?= =?us-ascii?Q?iqtUjj3cc2b1b48g/hffFHaQ/0UK6EjP3QsFI0kU1HA4aXbDqMeBvDtnsXlT?= =?us-ascii?Q?O/Yz6NEA6vKSCs+IG3COtoAvLyuLV+kBnDgfh3soWA+hNPzKJ6GnyJMLSXo8?= =?us-ascii?Q?ho5ZGo7GTlua4d7MazlZYnWLICzAXDvS+DtgRuBXWSCzLjm41Fa+n8Tnkec1?= =?us-ascii?Q?2qN6dVk9JA6aHHEQIeuywS/21tDD/ag4oR9ag0UgO7k8EyQbSIZ0DbpZvfbd?= =?us-ascii?Q?TCCVSQO+zNmbNoEsw97pmX/EHrgZV76xTUIn1mtsdPEJJ97tXB9ijZZt+XDf?= =?us-ascii?Q?fdnamG/Lgimbg3Qhn8floqg4maWXR6IGYvDeobMjYvgFoUXqo0B21leQ2zCL?= =?us-ascii?Q?IjAVTXVsW2ATjXTrOIqHBiqKULcvaskZXOpY9iSuj57cKNEZQi9mkw+6DhX4?= =?us-ascii?Q?IowS+z1VgFDqCYlJJpff8EmEWSXNRw1Jjmq/k3G+teOKqvEzOphhejgRpk4Z?= =?us-ascii?Q?/YqFjC9+lhP00AR4dCxi+J0FRzmv/Pby7ERkALyzECPMxEnxtglCHzsyRw92?= =?us-ascii?Q?f+AvPWUEO4yNQKhPIUs0xEGFP0qZW4YaNCWoU0NqjUGsYtSYn2JIQIsNhF8y?= =?us-ascii?Q?DLDc6w/CX342A5FLo2mZ3Iz6pSJpnWC6X6OvSlzkgV2AXdUjzr7OqwNxhp7g?= =?us-ascii?Q?peWA4o5I0N8qWLeQLNa1r5p61+wOd8OHeMfjkWeeLq81qg32NfwCIrLSwbqe?= =?us-ascii?Q?Y8YtMqM/qwNcRGBT0aLAymLICgaJwQBhOwK7J+uNl3pLIVYYEYKDsj9XMCQ0?= =?us-ascii?Q?/WiL1v5wLlUggwx7ryhy1CGjDd43pv7dgpYhndlfg2Kl8Jt/gKT/dt5aGvSc?= =?us-ascii?Q?bE0mWu0To36KmGiD+EloCnwnW7n1SnjQviWv7f/TFSuz6MXIzZ7pEh6Szt3B?= =?us-ascii?Q?BWCLMziXgm8OqSSvC91qekjZurAWOFwNAOf9P4t5ufU+WBtNqplp4nVdP31G?= =?us-ascii?Q?muijs6OIOBbbFvOnk7m/ECkkl6YXh8d7D6bJ7ZH1UEIi5ob5jYYh+7GoJT3Z?= =?us-ascii?Q?lIz+OoZcTfp27EJ3RBhlI2RPYGyxq3c5iu5K7gGoE2AjKDjaXBlZYDkUNpTW?= =?us-ascii?Q?razHm+HzEb8yTMkySVrWTdL6YdMBHNyYpfmkoZCkmItVHExv/b7ZEXmJpa2N?= =?us-ascii?Q?PRe55o+PfQvp6jhGbxMp7zDWTuzzkp0wxqObB9nbSH6YU0rSy0SD8RxFqMnh?= =?us-ascii?Q?3iq0TgmJT5Fc/H3nJxA6yCaL7fru60DBPSNI/yDKLa4DVD+KpuG/OLtdyecs?= =?us-ascii?Q?t2+d1Twm54XsNVI2LRGgq20f9sY9QWNE5KTm9j82NVofRDLL8TSjb6sZyMee?= =?us-ascii?Q?A7mYfcLpL7+4aHV/LNUGUMfK6/Xr63vwceYUjVuSKq7p5ybXp8c5oj0/FgdJ?= =?us-ascii?Q?Qq4rs9aqD+sSGK4vjKjl7PiJTE3bUVpIIBTt?= X-Forefront-Antispam-Report: CIP:216.228.118.232;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge1.nvidia.com;CAT:NONE;SFS:(13230040)(1800799024)(36860700013)(7416014)(376014)(82310400026);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Jun 2025 06:26:44.9085 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0a4c484b-f317-4796-0792-08dda7e7c596 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SA2PEPF00001504.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV8PR12MB9360 This patch series reverts a set of changes that consolidated per-CPU storage structures in the openvswitch module. The original changes were intended to improve performance and reduce complexity by merging three separate per-CPU structures into one, but they have changed openvswitch to use static percpu allocations, and exhausted the reserved chunk on module init. This results in allocation of struct ovs_pcpu_storage (6488 bytes) failure on ARM. The reverts are applied in reverse order of the original commits. Gal Pressman (3): Revert "openvswitch: Move ovs_frag_data_storage into the struct ovs_pcpu_storage" Revert "openvswitch: Use nested-BH locking for ovs_pcpu_storage" Revert "openvswitch: Merge three per-CPU structures into one" net/openvswitch/actions.c | 86 ++++++++++++++++++++++++++++++++------ net/openvswitch/datapath.c | 33 ++++----------- net/openvswitch/datapath.h | 52 ++--------------------- 3 files changed, 84 insertions(+), 87 deletions(-) -- 2.40.1