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Wed, 19 Feb 2025 23:47:28 +0000 Message-ID: <6946822e-4644-4be8-a187-3734b83fc8d7@intel.com> Date: Wed, 19 Feb 2025 15:47:25 -0800 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 17/42] x86/resctrl: Rewrite and move the for_each_*_rdt_resource() walkers To: James Morse , , CC: Thomas Gleixner , Ingo Molnar , Borislav Petkov , H Peter Anvin , Babu Moger , , "D Scott Phillips OS" , , , , , , Jamie Iles , Xin Hao , , , , David Hildenbrand , Rex Nie , "Dave Martin" , Koba Ko , Shanker Donthineni , Shaopeng Tan , "Tony Luck" References: <20250207181823.6378-1-james.morse@arm.com> <20250207181823.6378-18-james.morse@arm.com> Content-Language: en-US From: Reinette Chatre In-Reply-To: <20250207181823.6378-18-james.morse@arm.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: MW4PR03CA0166.namprd03.prod.outlook.com (2603:10b6:303:8d::21) To SJ2PR11MB7573.namprd11.prod.outlook.com (2603:10b6:a03:4d2::10) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ2PR11MB7573:EE_|DM4PR11MB6096:EE_ X-MS-Office365-Filtering-Correlation-Id: 5a069e6b-8b94-4f5c-0a9d-08dd513fc483 X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|7416014|1800799024|7053199007; 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These > became over-complex when the structures were split into a > filesystem and architecture-specific struct. This approach avoided > the need to touch every call site, and was done before there was a > helper to retrieve a resource by rid. > > Once the filesystem parts of resctrl are moved to /fs/, both the > architecture's resource array, and the definition of those structures > is no longer accessible. To support resctrl, each architecture would > have to provide equally complex macros. > > Rewrite the macro to make use of resctrl_arch_get_resource(), and > move these to include/linux/resctrl.h so existing x86 arch code continues > to use them. > > Signed-off-by: James Morse > Tested-by: Shaopeng Tan > Reviewed-by: Shaopeng Tan > Reviewed-by: Tony Luck > --- Reviewed-by: Reinette Chatre Reinette