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Message-ID: Date: Mon, 12 Oct 2020 12:40:03 -0600 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [70.64.84.123] X-ClientProxiedBy: BY5PR17CA0044.namprd17.prod.outlook.com (2603:10b6:a03:167::21) To SJ0PR11MB5120.namprd11.prod.outlook.com (2603:10b6:a03:2d1::13) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [172.25.39.5] (70.64.84.123) by BY5PR17CA0044.namprd17.prod.outlook.com (2603:10b6:a03:167::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3455.21 via Frontend Transport; Mon, 12 Oct 2020 18:40:07 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 3983b0bb-c2f6-4794-b05d-08d86ede3dfa X-MS-TrafficTypeDiagnostic: BYAPR11MB2743: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:8882; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: W7B61/bCAqlCKO5FC17k1yk63U8ynyf4L6qV66gtQfxn7udrzlcErjyIGNuqyotEWBPrmM72ZYRzerdKPAhqO9XCnk9NNrnT2V5oMuqoa3xAX66OJXyTOxgyB1qQQrTd43HtpqDfyxIHCzScE+W5X5b90NywNH4kiAL+c+iqt6ew3HKwAw7C/sqw1Sik+sGBXJUBGXqVFGHTlUCOvomlJ1jmNp84IgNkkS5tMwtW2drXT8u4TadQ6XO8JjB9x/iEts6j/Hrl3u/TYpb2N4TaFSd2hJi1ApeI3KVy3wbhgDdnbuF+4xyJk82Qbz5ULDgA+xRGjJ5dJ4qr1nEUXjRVzp12MtfjU/cCDYHrK2unjk7QufqkO+5D6xFcCt3yGh3E X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SJ0PR11MB5120.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(136003)(366004)(396003)(376002)(346002)(39850400004)(16526019)(36756003)(66946007)(186003)(110136005)(2906002)(16576012)(66556008)(316002)(86362001)(52116002)(8936002)(66476007)(478600001)(8676002)(31696002)(44832011)(6486002)(5660300002)(31686004)(4744005)(26005)(6666004)(956004)(2616005)(43740500002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: windriver.com X-MS-Exchange-CrossTenant-Network-Message-Id: 3983b0bb-c2f6-4794-b05d-08d86ede3dfa X-MS-Exchange-CrossTenant-AuthSource: SJ0PR11MB5120.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Oct 2020 18:40:07.9358 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 8ddb2873-a1ad-4a18-ae4e-4644631433be X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: ObKzT14OGpQDu1+VfAnBkRRomoxG/kzFF4P6SsIYwJ1U6ttH2qFHvp2rsXzD5epwJEgWiz4TNZKG6TpabolbgJ8HxU544lGbr9+hZ8T+2s8= X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR11MB2743 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On one of my X86-64 systems /proc/interrupts starts with the following interrupts (per-cpu info snipped): 0: IR-IO-APIC-edge timer 4: IR-IO-APIC-edge serial 8: IR-IO-APIC-edge rtc0 9: IR-IO-APIC-fasteoi acpi 17: IR-IO-APIC-fasteoi ehci_hcd:usb1, hpilo On this same system /proc/irq shows these interrupts: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 17 Is there any way to determine what the interrupts are that aren't listed in /proc/interrupts? Six of them are affined to all CPUs, and I'm trying to affine as many interrupts as possible to housekeeping CPUs to free up application CPUs for low-latency operations. I'm not subscribed to the list, so I'd appreciate being CC's on any replies. Chris