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=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham 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 8FA04C5ACAE for ; Thu, 12 Sep 2019 08:48:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6D5492084F for ; Thu, 12 Sep 2019 08:48:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730366AbfILIsq (ORCPT ); Thu, 12 Sep 2019 04:48:46 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([146.101.78.151]:23224 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726159AbfILIsq (ORCPT ); Thu, 12 Sep 2019 04:48:46 -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-17-AvKfWONiOouzoUVnjrPlUA-1; Thu, 12 Sep 2019 09:48:43 +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, 12 Sep 2019 09:48:42 +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, 12 Sep 2019 09:48:42 +0100 From: David Laight To: 'Yunfeng Ye' , "catalin.marinas@arm.com" , "will@kernel.org" CC: "kstewart@linuxfoundation.org" , "gregkh@linuxfoundation.org" , "ard.biesheuvel@linaro.org" , "tglx@linutronix.de" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "wuyun.wu@huawei.com" Subject: RE: [PATCH] arm64: psci: Use udelay() instead of msleep() to reduce waiting time Thread-Topic: [PATCH] arm64: psci: Use udelay() instead of msleep() to reduce waiting time Thread-Index: AQHVaH4AwWDpQzK54U6c4a0pGnl8oKcnvCiA Date: Thu, 12 Sep 2019 08:48:42 +0000 Message-ID: <18c9fd22d72d4ea1a11e800e8873dd8d@AcuMS.aculab.com> References: In-Reply-To: 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: AvKfWONiOouzoUVnjrPlUA-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 RnJvbTogWXVuZmVuZyBZZQ0KPiBTZW50OiAxMSBTZXB0ZW1iZXIgMjAxOSAwOTo1MA0KPiBXZSB3 YW50IHRvIHJlZHVjZSB0aGUgdGltZSBvZiBjcHVfZG93bigpIGZvciBzYXZpbmcgcG93ZXIsIGZv dW5kIHRoYXQNCj4gY3B1X3BzY2lfY3B1X2tpbGwoKSBjb3N0IDEwbXMgYWZ0ZXIgcHNjaV9vcHMu YWZmaW5pdHlfaW5mbygpIGZhaWwuDQo+IA0KPiBOb3JtYWxseSB0aGUgdGltZSBjcHUgZGVhZCBp cyB2ZXJ5IHNob3J0LCBpdCBpcyBubyBuZWVkIHRvIHdhaXQgMTBtcy4NCj4gc28gdXNlIHVkZWxh eSAxMHVzIHRvIGluc3RlYWQgbXNsZWVwIDEwbXMgaW4gZXZlcnkgd2FpdGluZyBsb29wLCBhbmQg YWRkDQo+IGNvbmRfcmVzY2hlZCgpIHRvIGdpdmUgYSBjaGFuY2UgdG8gcnVuIGEgaGlnaGVyLXBy aW9yaXR5IHByb2Nlc3MuDQo+IA0KPiBTaWduZWQtb2ZmLWJ5OiBZdW5mZW5nIFllIDx5ZXl1bmZl bmdAaHVhd2VpLmNvbT4NCj4gLS0tDQo+ICBhcmNoL2FybTY0L2tlcm5lbC9wc2NpLmMgfCA2ICsr Ky0tLQ0KPiAgMSBmaWxlIGNoYW5nZWQsIDMgaW5zZXJ0aW9ucygrKSwgMyBkZWxldGlvbnMoLSkN Cj4gDQo+IGRpZmYgLS1naXQgYS9hcmNoL2FybTY0L2tlcm5lbC9wc2NpLmMgYi9hcmNoL2FybTY0 L2tlcm5lbC9wc2NpLmMNCj4gaW5kZXggODVlZTdkMC4uOWU5ZDhhNiAxMDA2NDQNCj4gLS0tIGEv YXJjaC9hcm02NC9rZXJuZWwvcHNjaS5jDQo+ICsrKyBiL2FyY2gvYXJtNjQva2VybmVsL3BzY2ku Yw0KPiBAQCAtODYsMTUgKzg2LDE1IEBAIHN0YXRpYyBpbnQgY3B1X3BzY2lfY3B1X2tpbGwodW5z aWduZWQgaW50IGNwdSkNCj4gIAkgKiB3aGlsZSBpdCBpcyBkeWluZy4gU28sIHRyeSBhZ2FpbiBh IGZldyB0aW1lcy4NCj4gIAkgKi8NCj4gDQo+IC0JZm9yIChpID0gMDsgaSA8IDEwOyBpKyspIHsN Cj4gKwlmb3IgKGkgPSAwOyBpIDwgMTAwMDA7IGkrKykgew0KPiAgCQllcnIgPSBwc2NpX29wcy5h ZmZpbml0eV9pbmZvKGNwdV9sb2dpY2FsX21hcChjcHUpLCAwKTsNCj4gIAkJaWYgKGVyciA9PSBQ U0NJXzBfMl9BRkZJTklUWV9MRVZFTF9PRkYpIHsNCj4gIAkJCXByX2luZm8oIkNQVSVkIGtpbGxl ZC5cbiIsIGNwdSk7DQo+ICAJCQlyZXR1cm4gMDsNCj4gIAkJfQ0KPiANCj4gLQkJbXNsZWVwKDEw KTsNCj4gLQkJcHJfaW5mbygiUmV0cnlpbmcgYWdhaW4gdG8gY2hlY2sgZm9yIENQVSBraWxsXG4i KTsNCj4gKwkJY29uZF9yZXNjaGVkKCk7DQo+ICsJCXVkZWxheSgxMCk7DQoNCllvdSByZWFsbHkg ZG9uJ3Qgd2FudCB0byBiZSBkb2luZyAxMDAwMCB1ZGVsYXkoMTApIGJlZm9yZSBnaXZpbmcgdXAu DQoNCklmIHVkZWxheSgxMCkgaXMgbG9uZyBlbm91Z2ggZm9yIHRoZSBub3JtYWwgY2FzZSwgdGhl biBkbyB0aGF0IG9uY2UuDQpBZnRlciB0aGF0IHVzZSB1c2xlZXBfcmFuZ2UoKS4NCg0KCURhdmlk DQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVzcyBMYWtlc2lkZSwgQnJhbWxleSBSb2FkLCBNb3VudCBG YXJtLCBNaWx0b24gS2V5bmVzLCBNSzEgMVBULCBVSw0KUmVnaXN0cmF0aW9uIE5vOiAxMzk3Mzg2 IChXYWxlcykNCg==