Received: by 2002:ac0:b08d:0:0:0:0:0 with SMTP id l13csp5030374imc; Mon, 25 Feb 2019 16:04:50 -0800 (PST) X-Google-Smtp-Source: AHgI3IaTXqmygYPbLzHcanWArYf2yKfOeRnQOa4IeqShQ9b70p1o3CK0OUqs+JeTFjqCf1linOUe X-Received: by 2002:a17:902:2903:: with SMTP id g3mr14686597plb.222.1551139490468; Mon, 25 Feb 2019 16:04:50 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1551139490; cv=none; d=google.com; s=arc-20160816; b=RixjwUD4LW7tpHSI2Ivpnioj2O78AJqN192t4miEygYfIsNnQc8iT5HDqOxXIXE940 P1yA2+ECGHJvlDlz5TgwcQux8vmDPuO0sS4jkeL8vMbwTWcWudrGNmQUHrExCuZluLoo tQKlpKJhDPzy9qbz0C8bpxssVQLnfqIAuNew015U23LR87U860IkfeI2E1hF37kTqvbZ m3mLFXtVHd1nNQ3Yhq2N+OroYil7vxSL0lEqSX8R7IrQkgV7qU9mB9KcWVFOojiiEpnp F4PTfFLQXTDvPxexOeCL21IZnFCaa3ogGmwJdu7PKcO9xY5JCjh3tURq6OhUQn5RTyzG HPZw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:content-transfer-encoding :content-language:accept-language:in-reply-to:references:message-id :date:thread-index:thread-topic:subject:cc:to:from:dkim-signature; bh=kxFG8RQ9hka4RTgxcsh1TzkSvs6PxfxwPqqIkAuNfdA=; b=p613rcPI2dK/JHKE1SsmegvoDMfeaa0SazAhGudK23pc1geyLLVBUEUbxw3K+5OWqv 2ybQyDU0vBbIFq01UIgHRV4l67oPlm6nKvGrX+s2cJ8YSnkGzET2C07aWCbfni1zljLd mkrYRW4TeAgi5jeaxeB/bwvn5QOQ5v31r224OCQFASi1Wh5ZfaoxLKBfclMo2w3mOCrd D5AOpVz24iQ9cOGcVrBdFvxqdL/hnQDesprfTctn1BvXNP2TrCUVhVP+fbiQXlS/YSLq SdPeD3Qa5oYyoPb6vddK51bqQv62+uxoK60tHpl7J24xJ26vaDqTafcozx+zkLBwm3Od 93pw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@nxp.com header.s=selector1 header.b=s41aAhII; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=nxp.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 90si11448520plb.17.2019.02.25.16.04.35; Mon, 25 Feb 2019 16:04:50 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@nxp.com header.s=selector1 header.b=s41aAhII; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=nxp.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729075AbfBZAEN (ORCPT + 99 others); Mon, 25 Feb 2019 19:04:13 -0500 Received: from mail-eopbgr80084.outbound.protection.outlook.com ([40.107.8.84]:59488 "EHLO EUR04-VI1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728910AbfBZAEN (ORCPT ); Mon, 25 Feb 2019 19:04:13 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=kxFG8RQ9hka4RTgxcsh1TzkSvs6PxfxwPqqIkAuNfdA=; b=s41aAhIIyeaWKsZeAzIzhQsgod324XA4IOLMcukreJqgij9gUsTkGJ42o+8CoOJ2aFIvzJnYgTFh7b8Du4FZvg1MSXf1TfCbasue9oSYYXiLrs0b6q9bPyNUJgwxya20NmB4KgMKvU6EpHuNMeu0LYNPAlnb0+CGsvW/2MH30mM= Received: from AM0PR04MB4481.eurprd04.prod.outlook.com (52.135.147.15) by AM0PR04MB4466.eurprd04.prod.outlook.com (52.135.147.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1643.15; Tue, 26 Feb 2019 00:03:29 +0000 Received: from AM0PR04MB4481.eurprd04.prod.outlook.com ([fe80::a51f:134d:b530:f185]) by AM0PR04MB4481.eurprd04.prod.outlook.com ([fe80::a51f:134d:b530:f185%5]) with mapi id 15.20.1643.019; Tue, 26 Feb 2019 00:03:29 +0000 From: Peng Fan To: "dennis@kernel.org" CC: "tj@kernel.org" , "cl@linux.com" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "van.freenix@gmail.com" Subject: RE: [PATCH 2/2] percpu: km: no need to consider pcpu_group_offsets[0] Thread-Topic: [PATCH 2/2] percpu: km: no need to consider pcpu_group_offsets[0] Thread-Index: AQHUzELI99orDQmet0qADTSfLzpSUaXwoZQAgACSBtA= Date: Tue, 26 Feb 2019 00:03:29 +0000 Message-ID: References: <20190224132518.20586-1-peng.fan@nxp.com> <20190224132518.20586-2-peng.fan@nxp.com> <20190225151616.GB49611@dennisz-mbp.dhcp.thefacebook.com> In-Reply-To: <20190225151616.GB49611@dennisz-mbp.dhcp.thefacebook.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=peng.fan@nxp.com; x-originating-ip: [119.31.174.68] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: f6b305ad-8528-4b36-0906-08d69b7dd6d9 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600127)(711020)(4605104)(4618075)(2017052603328)(7153060)(7193020);SRVR:AM0PR04MB4466; x-ms-traffictypediagnostic: AM0PR04MB4466: x-microsoft-exchange-diagnostics: =?gb2312?B?MTtBTTBQUjA0TUI0NDY2OzIzOnMvSUdGbFNPNjFHQnRQMW1hOG52ODFmcXFy?= =?gb2312?B?NVNac001OHBlQ0lydkVmOTBHQnEvMEdpTDFkL3dxL0xYUzMvSEhPMWJ4RjFK?= =?gb2312?B?eDZvdC90NG1TTFZGU3lHaENnWEhaTDA1ZXo0a0RWcW9GMDFybmpkS2U4YUFR?= =?gb2312?B?ZlpSSFZBMkYycnIvY3dpekpJdUIxaXNDWkZueUh3dlhDam1XNlRyMWx4czBt?= =?gb2312?B?RkhvZkpVK0IrOHZNSXFnVEc5UXM0OStsNW81d003clVSb2RTYWkwSVZOcFdi?= =?gb2312?B?cGc0aHhZdnZUZU91U2QrVDBUYmduT0w1WWRxNVZCSXJUVGRiN3dRSnY2c3BB?= =?gb2312?B?YWpTRmlGQVZRTHdsdHZMajFJS1dQSncvd3gwdHNLUzFlTTBndnBXMytpcXcr?= =?gb2312?B?OGlxSDFSUHdxYUFQeCt0SHJFd2swZEdHbjFTbTB0ZUdrc0RtL1l5akpuSkJ2?= =?gb2312?B?d0h5WUJGZFNXUWNXWU11YjRhUFJyUzNleHc3Rnk2bWNWdDR0aG8yVlluUHhh?= =?gb2312?B?MmJ5S2xyQWRLYkVERjBjVXlQQU12WkNJUmZZQWs0UmxKZzM5aW1DaFpqR1hQ?= =?gb2312?B?OTBqMlBiWTRBanJKQ3kySmdqdEExRERGNFVBTW5nT1JMa3lma3Q3RWZTdmZ1?= =?gb2312?B?N3l4Nk8zdWhxcmF1b3RzeE9Cbkluemo5NkNmT1JBRjN4VmNrNkwvSk45RTFE?= =?gb2312?B?bDgzamgyMzFSVmVGUEpNMkZrTE4rb3BtOUJQU243anJlc0dyMGJReEQ0cnRS?= =?gb2312?B?RXB2aVlrWmxXbVNuRUExK0Y0dUw1OERBNm1od1lPNDJac2JyMzN3Slo0c1JF?= =?gb2312?B?cVdrKzVsQ0lLbVN2NTB5NXNOaDc3TmhrV2xEa0pYKzlYYnBxWm93K3FMRHhI?= =?gb2312?B?OENpQnZiRkxhaStFNlBlNU9OVzAyZkpUcEc4N3hPMldUM1hmUjNvN05NVUtZ?= =?gb2312?B?ZkpJOWllUnphTXMwb1pnQ3VvSHFsSVlnMjVidk1nVWFQa0E0bTFVVHp2WFdX?= =?gb2312?B?VVVnUzV3RFJ3MHRjUGhSTitndUZCMTBwdUlsNWM5b3BCVExNc1JySGhYWDZN?= =?gb2312?B?czBIK0hra21IMEhuQUowbDN4VDJxUkJUVytxL1kwbVg4cnptczk3WHVsS05D?= =?gb2312?B?RnUyeWdCMGtnU2FyR1ppVlRlc2h0cVA4d2hFVXdwSitCL0NrMlI1cG0rUGFz?= =?gb2312?B?K2V0V0luYlpWMUd4VWpXSksxa0Z5SlRJbW5Id1J6dXFJR2VhVWpZcktsdG85?= =?gb2312?B?TlZYd2xVL0JyRlFhSHBSVmFEUlJVSGlZdzR6K2lxZ3JFSk4yTTRBV1NWWHgr?= =?gb2312?B?QW5Lbkc0R1YxNi9qWjlpL3hCUGt4WktFOGdNZDBPMmhFVTlRSVQ1SnQrd1hF?= =?gb2312?B?K1lXU0Vland2Z0RWNklWZHZ3clRPWEJzSmtucDkya1ErRXEvR09GanZyck9T?= =?gb2312?B?RHl4aDdyQ2RFcGZOeDU3Sm90MXErS3FEZlZJTTFDSVAwVk1qa0JMd0JOemFi?= =?gb2312?B?WkZpM2o1MlBmOTBGZVhKRHJuS0xsL21pbkIvTmdFbnYzWUJiTWYvdDIyc1Vr?= =?gb2312?B?VXFVaUM1cEw2bjFoUkVWekVKenNFc3ArUFFUSktmbURIN25wM0ZoOFRkL2Zp?= =?gb2312?B?aEVXaWlLbXlRMEZDMUJlZlBacHJhL3BwZkV2TmMvYllhRndMeHlabEJzN0NR?= =?gb2312?B?bm9weFRtQUtpaDB0ckxFS05obTlVTGh0NHlwa2k1NXI0L2UrYmZMRU5oTStm?= =?gb2312?B?STZqWFdISWEyalZNNTRLSWw0U01KKzVkdjFJSnc1Um1YMGRnQWJqQ2VaSU42?= =?gb2312?B?NFliWnBubFY1WERnSjF5Yi9vRS8yT3Q1TXdDU3FiL3ZwMXd5RjQ0K1p4NHFS?= =?gb2312?Q?XFtGs6rFRw4=3D?= x-microsoft-antispam-prvs: x-forefront-prvs: 096029FF66 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(376002)(346002)(366004)(396003)(39860400002)(136003)(13464003)(199004)(189003)(1730700003)(74316002)(81156014)(8676002)(2906002)(33656002)(54906003)(97736004)(26005)(14454004)(55016002)(9686003)(229853002)(106356001)(478600001)(53936002)(105586002)(5640700003)(6436002)(99286004)(256004)(14444005)(305945005)(7736002)(316002)(6916009)(6246003)(71190400001)(71200400001)(81166006)(2501003)(6506007)(66066001)(476003)(68736007)(486006)(446003)(52536013)(76176011)(86362001)(11346002)(186003)(25786009)(5660300002)(7696005)(53546011)(3846002)(2351001)(6116002)(102836004)(44832011)(8936002)(4326008);DIR:OUT;SFP:1101;SCL:1;SRVR:AM0PR04MB4466;H:AM0PR04MB4481.eurprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: ljtzM3sJkRB7ebWkPl8fyk+GRoV3lgKgLPmkNIF8hCqDO3zjSGCnuejYtw5Y+qh/Xe8stiv0xl7DWQJBW0PaWy1K+U0Av2g+SYd/UvWeMsE4uffOFNV+wdQycaVAwHfaPHUfKEYjjDbTOPM2KSxAcB+eK0aJC9M9oQlOoJKjO5bkRDtqRXMfSC0M7hrRPNrw2QyGNZer04yRVSwTcY9SsET/h8OWwTsqPxYpMLrADdHQS6rCVwoSdpkORkEpYy9QmKluGO2sW4MYxpMtsQomZun1BN7NxVyJ5Wfd9WV/i9vGMguDAaPk3Ce4fBTzuk8ucdPbFnU2VFFlPWFzfBJs+CGVV5GSGW1ZKK5NU+BlSg8nbmve09h9x31v1PLUTiIrUVFSMAgcti0kk4mBQEUOqb9HPEK0NJlBA46dQ3PVKL4= Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: f6b305ad-8528-4b36-0906-08d69b7dd6d9 X-MS-Exchange-CrossTenant-originalarrivaltime: 26 Feb 2019 00:03:29.6618 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB4466 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org SGkgRGVubmlzLA0KDQo+IC0tLS0tT3JpZ2luYWwgTWVzc2FnZS0tLS0tDQo+IEZyb206IGRlbm5p c0BrZXJuZWwub3JnIFttYWlsdG86ZGVubmlzQGtlcm5lbC5vcmddDQo+IFNlbnQ6IDIwMTnE6jLU wjI1yNUgMjM6MTYNCj4gVG86IFBlbmcgRmFuIDxwZW5nLmZhbkBueHAuY29tPg0KPiBDYzogdGpA a2VybmVsLm9yZzsgY2xAbGludXguY29tOyBsaW51eC1tbUBrdmFjay5vcmc7DQo+IGxpbnV4LWtl cm5lbEB2Z2VyLmtlcm5lbC5vcmc7IHZhbi5mcmVlbml4QGdtYWlsLmNvbQ0KPiBTdWJqZWN0OiBS ZTogW1BBVENIIDIvMl0gcGVyY3B1OiBrbTogbm8gbmVlZCB0byBjb25zaWRlcg0KPiBwY3B1X2dy b3VwX29mZnNldHNbMF0NCj4gDQo+IE9uIFN1biwgRmViIDI0LCAyMDE5IGF0IDAxOjEzOjUwUE0g KzAwMDAsIFBlbmcgRmFuIHdyb3RlOg0KPiA+IHBlcmNwdS1rbSBpcyB1c2VkIG9uIFVQIHN5c3Rl bXMgd2hpY2ggb25seSBoYXMgb25lIGdyb3VwLCBzbyB0aGUgZ3JvdXANCj4gPiBvZmZzZXQgd2ls bCBiZSBhbHdheXMgMCwgdGhlcmUgaXMgbm8gbmVlZCB0byBzdWJ0cmFjdA0KPiA+IHBjcHVfZ3Jv dXBfb2Zmc2V0c1swXSB3aGVuIGFzc2lnbmluZyBjaHVuay0+YmFzZV9hZGRyDQo+ID4NCj4gPiBT aWduZWQtb2ZmLWJ5OiBQZW5nIEZhbiA8cGVuZy5mYW5AbnhwLmNvbT4NCj4gPiAtLS0NCj4gPiAg bW0vcGVyY3B1LWttLmMgfCAyICstDQo+ID4gIDEgZmlsZSBjaGFuZ2VkLCAxIGluc2VydGlvbigr KSwgMSBkZWxldGlvbigtKQ0KPiA+DQo+ID4gZGlmZiAtLWdpdCBhL21tL3BlcmNwdS1rbS5jIGIv bW0vcGVyY3B1LWttLmMgaW5kZXgNCj4gPiA2NmU1NTk4YmU4NzYuLjg4NzJjMjFhNDg3YiAxMDA2 NDQNCj4gPiAtLS0gYS9tbS9wZXJjcHUta20uYw0KPiA+ICsrKyBiL21tL3BlcmNwdS1rbS5jDQo+ ID4gQEAgLTY3LDcgKzY3LDcgQEAgc3RhdGljIHN0cnVjdCBwY3B1X2NodW5rICpwY3B1X2NyZWF0 ZV9jaHVuayhnZnBfdA0KPiBnZnApDQo+ID4gIAkJcGNwdV9zZXRfcGFnZV9jaHVuayhudGhfcGFn ZShwYWdlcywgaSksIGNodW5rKTsNCj4gPg0KPiA+ICAJY2h1bmstPmRhdGEgPSBwYWdlczsNCj4g PiAtCWNodW5rLT5iYXNlX2FkZHIgPSBwYWdlX2FkZHJlc3MocGFnZXMpIC0gcGNwdV9ncm91cF9v ZmZzZXRzWzBdOw0KPiA+ICsJY2h1bmstPmJhc2VfYWRkciA9IHBhZ2VfYWRkcmVzcyhwYWdlcyk7 DQo+ID4NCj4gPiAgCXNwaW5fbG9ja19pcnFzYXZlKCZwY3B1X2xvY2ssIGZsYWdzKTsNCj4gPiAg CXBjcHVfY2h1bmtfcG9wdWxhdGVkKGNodW5rLCAwLCBucl9wYWdlcywgZmFsc2UpOw0KPiA+IC0t DQo+ID4gMi4xNi40DQo+ID4NCj4gDQo+IFdoaWxlIEkgZG8gdGhpbmsgeW91J3JlIHJpZ2h0LCBj cmVhdGluZyBhIGNodW5rIGlzIG5vdCBhIHBhcnQgb2YgdGhlDQo+IGNyaXRpY2FsIHBhdGggYW5k IHN1YnRyYWN0aW5nIDAgaXMgaW5jcmVkaWJseSBtaW5vciBvdmVyaGVhZC4gU28gSSdkDQo+IHJh dGhlciBrZWVwIHRoZSBjb2RlIGFzIGlzIHRvIG1haW50YWluIGNvbnNpc3RlbmN5IGJldHdlZW4g cGVyY3B1LXZtLmMNCj4gYW5kIHBlcmNwdS1rbS5jLg0KDQpUaGF0J3Mgb2sgdG8ga2VlcCBjb25z aXN0ZW5jeSwgc2luY2UgeW91IHByZWZlciB0aGF0Lg0KDQpUaGFua3MsDQpQZW5nLg0KDQo+IA0K PiBUaGFua3MsDQo+IERlbm5pcw0K