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Shenoy" , "Swapnil Sapkal" , Shrikanth Hegde , "K Prateek Nayak" Subject: [RFC PATCH 1/8] sched/topology: Assign sd_share for all non NUMA sched domains Date: Thu, 13 Mar 2025 09:37:39 +0000 Message-ID: <20250313093746.6760-2-kprateek.nayak@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250313093746.6760-1-kprateek.nayak@amd.com> References: <20250313093746.6760-1-kprateek.nayak@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000E9D6:EE_|CH2PR12MB4054:EE_ X-MS-Office365-Filtering-Correlation-Id: 481d6b76-08f8-4747-b896-08dd6212cdab X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|376014|36860700013|7416014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?ahfu0gDLAu29zi8PscIcvi1BeNiiEqHxfxG1BAlpZTZ+kYMe3Oh1BzivMV4Y?= =?us-ascii?Q?70cgs6ScvzgUejCvKOR8PRtHvBtv1JR0nd7rOwYUmkPKYLBuqAAm30j7vRyQ?= =?us-ascii?Q?ajfBrlXS6JXvm6n1sSm7tI3OZu1BefoIqbLwE5RMQRlnFoZNgmL1zxalo7Gb?= =?us-ascii?Q?58veaj8tiGyOBUJon2gFRLX4XAKMLZHNn9qvfOtx7T9OUV/plQ9If78Qa+14?= =?us-ascii?Q?GmsKkz+qDWAbpAQ9JsNastYWCcoQ9Of0aWFNLcKrPDJ1GKNyy/42kjM5b0pq?= =?us-ascii?Q?gi1AE2GIj2xwLk7t9Ui+FVuEGVwMF1kZDsZDrW8mlycnIINqDaFDaU63E8JB?= =?us-ascii?Q?6STLezTA3kMoTkvEOgXmq6Jq7clfjeIQ1rFRIM1kqubktSp2Vo5i7kNavikb?= =?us-ascii?Q?wjrRgXidhrTCkTZTsJlhnWfWDpqOUkw5HJlp5W7iGPdXktPiBDF/mICtTcOv?= =?us-ascii?Q?b8kVEENe/C1kJRf6WKetbjyJBP5Iv2+XhkP2X5ltYU5cLVFcWRGlgCsjBFAd?= =?us-ascii?Q?edpQeqfWQwfhBwIQGv7tqKOfA1ZeG2HB+LB1uFLNBD1D4iXowIYCxOSNWkZv?= =?us-ascii?Q?Zym+CGfekHzKIuM4Kv7jfQLJ1V3+IOwieq6Tgx7xeeKEZLdiVbQeIuhR2tK5?= =?us-ascii?Q?o8IHkxaIradN3dq/KpPmnwNJopJDMywzxvIEDMO7rg34+IpvjvYbQkY2kaDB?= =?us-ascii?Q?brRkfqfF8StBYC7Jq08uKrl82JY2rH4jBqYBFmvhsGG3vhRzVWmq+RKkIF1u?= =?us-ascii?Q?GOJdPRKfiju2L9eKRlzaLa98ZGa8hYRfJHRjScautL9gaLPV0Q2DZ7uNSGrE?= =?us-ascii?Q?pfXN5f8k5BUAQwVQ6d15aqq0rpSgFQZw+NBLZEHs2wn9GPDjqvwxjBilbn0z?= =?us-ascii?Q?6NJwXjoZFvrzkIPuLBuai9DK6ABKc9MaZbRpfQIEpjyMiSy7yPg+TBpoqEc2?= =?us-ascii?Q?wba34zl75OpkQnAoIgZhU3+/ZvS0CJqVNm0WrAzr2Ca/w3cSgZSCS56Y+7oq?= =?us-ascii?Q?mpgnuWfLy0AIxkROPwstQbNSEWwraujJRgLPq51kxNMOit8TS5CCsvRbgO8j?= =?us-ascii?Q?FNniNh5N7z/5YlpF1Ru65BE+jcBTjp9Hzc5kFNUx7r13EEhWYL2ysuuKCwzi?= =?us-ascii?Q?IXJYHy5cY8CNgC1/FkK/PkGeCOKBlyFke/Pz7ANNPmo+h7OVy5wR725zX8sq?= =?us-ascii?Q?ckb7GexiE6pXX5UE++eTp/B/Q+BrVWtni44hdcLrA4htjPotoYdEe/RxZ9hq?= =?us-ascii?Q?Wr7qwlxM08tZG9K64TGT8NNhveIjW2qO8Z64bOj8U8ttZ7AaNshEQIQQrSUg?= =?us-ascii?Q?bSGS3fTCgU+Q6xa8DEdMxNYFoEBemhPfBHVbZD0V1nJzEX2ctLPYrr6MK+g0?= =?us-ascii?Q?t8Z2owJj3Udr4WE0vTklilMTFRS462ONRvb7uiFO1I3zG+H30HLxBHo+WQry?= =?us-ascii?Q?Du1k18Q45qB0zwlmgw1CCh+Tw9JnmHdXQceoOOC00OU6im8vheWr0A=3D=3D?= X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(82310400026)(1800799024)(376014)(36860700013)(7416014);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Mar 2025 09:38:25.4432 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 481d6b76-08f8-4747-b896-08dd6212cdab X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000E9D6.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR12MB4054 Content-Type: text/plain; charset="utf-8" From: Chen Yu Currently, only the domain with SD_SHARE_PKG_RESOURCES flag would share 1 sd_share for every CPU in this domain. Remove this restriction and extend it for other sched domains under NUMA domain. This shared field will be used by a later patch which optimizes newidle balancing. Suggested-by: "Gautham R. Shenoy" Suggested-by: Peter Zijlstra (Intel) Signed-off-by: Chen Yu Signed-off-by: K Prateek Nayak --- kernel/sched/topology.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index c49aea8c1025..815474823b3f 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -1680,10 +1680,10 @@ sd_init(struct sched_domain_topology_level *tl, } =20 /* - * For all levels sharing cache; connect a sched_domain_shared + * For all levels except for NUMA; connect a sched_domain_shared * instance. */ - if (sd->flags & SD_SHARE_LLC) { + if (!(sd->flags & SD_NUMA)) { sd->shared =3D *per_cpu_ptr(sdd->sds, sd_id); atomic_inc(&sd->shared->ref); atomic_set(&sd->shared->nr_busy_cpus, sd_weight); --=20 2.43.0