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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AA92DC433EF for ; Fri, 8 Oct 2021 03:10:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7DF7360F57 for ; Fri, 8 Oct 2021 03:10:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229699AbhJHDMb (ORCPT ); Thu, 7 Oct 2021 23:12:31 -0400 Received: from szxga01-in.huawei.com ([45.249.212.187]:28896 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229501AbhJHDMa (ORCPT ); Thu, 7 Oct 2021 23:12:30 -0400 Received: from dggemv704-chm.china.huawei.com (unknown [172.30.72.54]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4HQY425yG3zbn0G; Fri, 8 Oct 2021 11:06:10 +0800 (CST) Received: from dggpemm500005.china.huawei.com (7.185.36.74) by dggemv704-chm.china.huawei.com (10.3.19.47) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.8; Fri, 8 Oct 2021 11:10:34 +0800 Received: from dggpeml100016.china.huawei.com (7.185.36.216) by dggpemm500005.china.huawei.com (7.185.36.74) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.8; Fri, 8 Oct 2021 11:10:34 +0800 Received: from dggpeml100016.china.huawei.com ([7.185.36.216]) by dggpeml100016.china.huawei.com ([7.185.36.216]) with mapi id 15.01.2308.008; Fri, 8 Oct 2021 11:10:34 +0800 From: "Longpeng (Mike, Cloud Infrastructure Service Product Dept.)" To: Sebastian Andrzej Siewior CC: "peterz@infradead.org" , "valentin.schneider@arm.com" , "mingo@kernel.org" , "tglx@linutronix.de" , "linux-kernel@vger.kernel.org" , "Gonglei (Arei)" Subject: RE: [RFC] cpu/hotplug: allow the cpu in UP_PREPARE state to bringup again Thread-Topic: [RFC] cpu/hotplug: allow the cpu in UP_PREPARE state to bringup again Thread-Index: AQHXtgOraFU9tinyd0CEjjIpTs+60KvIby1w Date: Fri, 8 Oct 2021 03:10:34 +0000 Message-ID: References: <20210901051143.2752-1-longpeng2@huawei.com> <20210930140118.z352cj3uzjscctcb@linutronix.de> In-Reply-To: <20210930140118.z352cj3uzjscctcb@linutronix.de> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.174.148.223] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org DQoNCj4gLS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0NCj4gRnJvbTogU2ViYXN0aWFuIEFuZHJ6 ZWogU2lld2lvciBbbWFpbHRvOmJpZ2Vhc3lAbGludXRyb25peC5kZV0NCj4gU2VudDogVGh1cnNk YXksIFNlcHRlbWJlciAzMCwgMjAyMSAxMDowMSBQTQ0KPiBUbzogTG9uZ3BlbmcgKE1pa2UsIENs b3VkIEluZnJhc3RydWN0dXJlIFNlcnZpY2UgUHJvZHVjdCBEZXB0LikNCj4gPGxvbmdwZW5nMkBo dWF3ZWkuY29tPg0KPiBDYzogcGV0ZXJ6QGluZnJhZGVhZC5vcmc7IHZhbGVudGluLnNjaG5laWRl ckBhcm0uY29tOyBtaW5nb0BrZXJuZWwub3JnOw0KPiB0Z2x4QGxpbnV0cm9uaXguZGU7IGxpbnV4 LWtlcm5lbEB2Z2VyLmtlcm5lbC5vcmc7IEdvbmdsZWkgKEFyZWkpDQo+IDxhcmVpLmdvbmdsZWlA aHVhd2VpLmNvbT4NCj4gU3ViamVjdDogUmU6IFtSRkNdIGNwdS9ob3RwbHVnOiBhbGxvdyB0aGUg Y3B1IGluIFVQX1BSRVBBUkUgc3RhdGUgdG8gYnJpbmd1cA0KPiBhZ2Fpbg0KPiANCj4gT24gMjAy MS0wOS0wMSAxMzoxMTo0MyBbKzA4MDBdLCBMb25ncGVuZyhNaWtlKSB3cm90ZToNCj4gPiBUaGUg Y3B1J3MgY3B1X2hvdHBsdWdfc3RhdGUgd2lsbCBiZSBzZXQgdG8gQ1BVX1VQX1BSRVBBUkUgYmVm b3JlDQo+ID4gdGhlIGNwdSBpcyB3YWtlbiB1cCwgYnV0IGl0IHdvbid0IGJlIHJlc2V0IHdoZW4g dGhlIGZhaWx1cmUgb2NjdXJzLg0KPiA+IFRoZW4gdGhlIHVzZXIgY2Fubm90IHRvIG1ha2UgdGhl IGNwdSBvbmxpbmUgYW55bW9yZSwgYmVjYXVzZSB0aGUNCj4gPiBDUFVfVVBfUFJFUEFSRSBzdGF0 ZSBtYWtlcyBjcHVfY2hlY2tfdXBfcHJlcGFyZSgpIHVuaGFwcHkuDQo+ID4NCj4gPiBXZSBzaG91 bGQgYWxsb3cgdGhlIHVzZXIgdG8gdHJ5IGFnYWluIGluIHRoaXMgY2FzZS4NCj4gDQo+IENhbiB5 b3UgcGxlYXNlIGRlc2NyaWJlIHdoZXJlIGl0IGZhaWxlZCAvIHdoYXQgZGlkIHlvdSByZWFjaCB0 aGF0IHN0YXRlPw0KPiANCg0KbmF0aXZlX2NwdV91cA0KICBjcHVfY2hlY2tfdXBfcHJlcGFyZQ0K ICBkb19ib290X2NwdQ0KICAgIC8qIFdhaXQgMTBzIHRvdGFsIGZvciBmaXJzdCBzaWduIG9mIGxp ZmUgZnJvbSBBUCAqLw0KDQpJdCB3aWxsIGZhaWwgaWYgdGhlIEFQIGRvZXNuJ3QgcmVzcG9uc2Ug aW4gMTBzIGFuZCB0aGVuIGNwdV9ob3RwbHVnX3N0YXRlDQp3aWxsIHN0YXkgaW4gQ1BVX1VQX1BS RVBBUkUgc3RhdGUuDQoNClRoaXMgY291bGQgaGFwcGVuIG9uIGEgdmlydHVhbGl6ZWQgc3lzdGVt LCBlc3BlY2lhbGx5IGluIHNvbWUgc3BlY2lhbCB1c2FnZXMsDQplLmcuIFNvZnR3YXJlIEVuY2xh dmVzIFsxXVsyXQ0KDQpbMV0gaHR0cHM6Ly9kb2NzLmF3cy5hbWF6b24uY29tL2VuY2xhdmVzL2xh dGVzdC91c2VyL25pdHJvLWVuY2xhdmUuaHRtbA0KWzJdIGh0dHBzOi8vd3d3LmFsaWJhYmFjbG91 ZC5jb20vaGVscC9kb2MtZGV0YWlsLzIwMzQzMy5odG0/c3BtPWEzYzBpLjIzOTg2NzQyLjY5ODE3 NjE1MjAuMS43ZTMwNzE1ZVpDUlhtaw0KDQoNCj4gPiBTaWduZWQtb2ZmLWJ5OiBMb25ncGVuZyhN aWtlKSA8bG9uZ3BlbmcyQGh1YXdlaS5jb20+DQo+ID4gLS0tDQo+ID4gIGtlcm5lbC9zbXBib290 LmMgfCA3ICsrKysrKysNCj4gPiAgMSBmaWxlIGNoYW5nZWQsIDcgaW5zZXJ0aW9ucygrKQ0KPiA+ DQo+ID4gZGlmZiAtLWdpdCBhL2tlcm5lbC9zbXBib290LmMgYi9rZXJuZWwvc21wYm9vdC5jDQo+ ID4gaW5kZXggZjZiYzBiYy4uZDE4ZjhmZiAxMDA2NDQNCj4gPiAtLS0gYS9rZXJuZWwvc21wYm9v dC5jDQo+ID4gKysrIGIva2VybmVsL3NtcGJvb3QuYw0KPiA+IEBAIC0zOTIsNiArMzkyLDEzIEBA IGludCBjcHVfY2hlY2tfdXBfcHJlcGFyZShpbnQgY3B1KQ0KPiA+ICAJCSAqLw0KPiA+ICAJCXJl dHVybiAtRUFHQUlOOw0KPiA+DQo+ID4gKwljYXNlIENQVV9VUF9QUkVQQVJFOg0KPiA+ICsJCS8q DQo+ID4gKwkJICogVGhlIENQVSBmYWlsZWQgdG8gYnJpbmd1cCBsYXN0IHRpbWUsIGFsbG93IHRo ZSB1c2VyDQo+ID4gKwkJICogY29udGludWUgdG8gdHJ5IHRvIHN0YXJ0IGl0IHVwLg0KPiA+ICsJ CSAqLw0KPiA+ICsJCXJldHVybiAwOw0KPiA+ICsNCj4gPiAgCWRlZmF1bHQ6DQo+ID4NCj4gPiAg CQkvKiBTaG91bGQgbm90IGhhcHBlbi4gIEZhbW91cyBsYXN0IHdvcmRzLiAqLw0KPiA+IC0tDQo+ ID4gMS44LjMuMQ0KPiANCj4gU2ViYXN0aWFuDQo=