From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8341AFA372A for ; Thu, 17 Oct 2019 14:25:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 62D862089C for ; Thu, 17 Oct 2019 14:25:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2395301AbfJQOZT (ORCPT ); Thu, 17 Oct 2019 10:25:19 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([146.101.78.151]:38830 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727671AbfJQOZT (ORCPT ); Thu, 17 Oct 2019 10:25:19 -0400 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-35-wLuQ8dFnOzq0PfuTddZlqw-1; Thu, 17 Oct 2019 15:25:15 +0100 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Thu, 17 Oct 2019 15:25:14 +0100 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Thu, 17 Oct 2019 15:25:14 +0100 From: David Laight To: 'Yunfeng Ye' , Sudeep Holla CC: "catalin.marinas@arm.com" , "will@kernel.org" , "kstewart@linuxfoundation.org" , "gregkh@linuxfoundation.org" , "ard.biesheuvel@linaro.org" , "tglx@linutronix.de" , "wuyun.wu@huawei.com" , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "hushiyuan@huawei.com" , "linfeilong@huawei.com" Subject: RE: [PATCH V2] arm64: psci: Reduce waiting time of cpu_psci_cpu_kill() Thread-Topic: [PATCH V2] arm64: psci: Reduce waiting time of cpu_psci_cpu_kill() Thread-Index: AQHVhO5+Vr2ETd8AWEKYYhhOaw9ZuKde3Cgg///1GwCAABHQgA== Date: Thu, 17 Oct 2019 14:25:14 +0000 Message-ID: <173d1913031b4ecb88f0c6e421cc5cf8@AcuMS.aculab.com> References: <18068756-0f39-6388-3290-cf03746e767d@huawei.com> <9df267db-e647-a81d-16bb-b8bfb06c2624@huawei.com> <20191016153221.GA8978@bogus> <0f550044-9ed2-5f72-1335-73417678ba45@huawei.com> <1cd555f0-4074-36b7-8426-6f01130051d2@huawei.com> In-Reply-To: <1cd555f0-4074-36b7-8426-6f01130051d2@huawei.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 X-MC-Unique: wLuQ8dFnOzq0PfuTddZlqw-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogWXVuZmVuZyBZZQ0KID4gU2VudDogMTcgT2N0b2JlciAyMDE5IDE1OjIwDQo+IE9uIDIw MTkvMTAvMTcgMjI6MDAsIERhdmlkIExhaWdodCB3cm90ZToNCj4gPiBGcm9tOiBZdW5mZW5nIFll DQo+ID4+IFNlbnQ6IDE3IE9jdG9iZXIgMjAxOSAxNDoyNg0KPiA+IC4uLg0KPiA+Pj4+IC0JZm9y IChpID0gMDsgaSA8IDEwOyBpKyspIHsNCj4gPj4+PiArCWkgPSAwOw0KPiA+Pj4+ICsJdGltZW91 dCA9IGppZmZpZXMgKyBtc2Vjc190b19qaWZmaWVzKDEwMCk7DQo+ID4+Pj4gKwlkbyB7DQo+ID4+ Pj4gIAkJZXJyID0gcHNjaV9vcHMuYWZmaW5pdHlfaW5mbyhjcHVfbG9naWNhbF9tYXAoY3B1KSwg MCk7DQo+ID4+Pj4gIAkJaWYgKGVyciA9PSBQU0NJXzBfMl9BRkZJTklUWV9MRVZFTF9PRkYpIHsN Cj4gPj4+PiAgCQkJcHJfaW5mbygiQ1BVJWQga2lsbGVkLlxuIiwgY3B1KTsNCj4gPj4+PiAgCQkJ cmV0dXJuIDA7DQo+ID4+Pj4gIAkJfQ0KPiA+Pj4+DQo+ID4+Pj4gLQkJbXNsZWVwKDEwKTsNCj4g Pj4+PiAtCQlwcl9pbmZvKCJSZXRyeWluZyBhZ2FpbiB0byBjaGVjayBmb3IgQ1BVIGtpbGxcbiIp Ow0KPiA+Pj4NCj4gPj4+IFlvdSBkcm9wcGVkIHRoaXMgbWVzc2FnZSwgYW55IHBhcnRpY3VsYXIg cmVhc29uID8NCj4gPj4+DQo+ID4+IFdoZW4gcmVkdWNlIHRoZSB0aW1lIGludGVydmFsIHRvIDFt cywgdGhlIHByaW50IG1lc3NhZ2UgbWF5YmUgaW5jcmVhc2UgMTAgdGltZXMuDQo+ID4+IG9uIHRo ZSBvdGhlciBoYW5kLCBjcHVfcHNjaV9jcHVfa2lsbCgpIHdpbGwgcHJpbnQgbWVzc2FnZSBvbiBz dWNjZXNzIG9yIGZhaWx1cmUsIHdoaWNoDQo+ID4+IHRoaXMgcmV0cnkgbG9nIGlzIG5vdCB2ZXJ5 IG5lY2Vzc2FyeS4gb2YgY291cmNlLCBJIHRoaW5rIHVzZSBwcl9pbmZvX29uY2UoKSBpbnN0ZWFk IG9mDQo+ID4+IHByX2luZm8oKSBpcyBiZXR0ZXIuDQo+ID4NCj4gPiBNYXliZSB5b3Ugc2hvdWxk IHByaW50IGluIG9uIChzYXkpIHRoZSAxMHRoIHRpbWUgYXJvdW5kIHRoZSBsb29wLg0KPiA+DQo+ IENhbiBpdCBsaWtlIHRoaXM6DQo+ICAgcHJfaW5mbygiQ1BVJWQga2lsbGVkIHdpdGggJWQgbG9v cHMuXG4iLCBjcHUsIGxvb3BzKTsNCj4gDQo+IElmIHB1dCB0aGUgbnVtYmVyIG9mIHdhaXRpbmcg dGltZXMgaW4gdGhlIHN1Y2Nlc3NmdWwgcHJpbnRpbmcgbWVzc2FnZSwgaXQgaXMNCj4gbm90IG5l Y2Vzc2FyeSB0byBwcmludCB0aGUgIlJldHJ5aW5nIC4uLiIgbWVzc2FnZS4NCg0KVGhhdCBkZXBl bmRzIG9uIHdoZXRoZXIgeW91IHdhbnQgdG8ga25vdyBob3cgbG9uZyBpdCB0b29rIG9yIHdoeSB0 aGUgc3lzdGVtDQppcyAnc3R1Y2snLg0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNz IExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAx UFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K