From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965144AbeAJDrp (ORCPT + 1 other); Tue, 9 Jan 2018 22:47:45 -0500 Received: from zxshcas2.zhaoxin.com ([180.169.121.92]:33719 "EHLO ZXSHCAS2.zhaoxin.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S965127AbeAJDro (ORCPT ); Tue, 9 Jan 2018 22:47:44 -0500 From: "Tim Guo(BJ-RD)" To: "Rafael J. Wysocki" CC: "tglx@linutronix.de" , "mingo@redhat.com" , "hpa@zytor.com" , "mingo@kernel.org" , "x86@kernel.org" , "linux-pm@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "Bruce Chang (VAS)" , "Cooper Yan(BJ-RD)" , "Qiyuan Wang(BJ-RD)" , Benjamin Pan Subject: =?utf-8?B?562U5aSNOiBbUEFUQ0hdIHg4Ni9hY3BpL2NzdGF0ZSBkZWxldGUgc29tZSB1?= =?utf-8?Q?nuseful_operations?= Thread-Topic: [PATCH] x86/acpi/cstate delete some unuseful operations Thread-Index: AQHThilXEq3iQdieckSrYYi/5HHx66NsdYZA Date: Wed, 10 Jan 2018 03:47:16 +0000 Message-ID: <31343a0429e544a3823c469d66004837@zhaoxin.com> References: <1513943704-4117-1-git-send-email-timguo@zhaoxin.com> <2688053.9MAEhVZnSn@aspire.rjw.lan> In-Reply-To: <2688053.9MAEhVZnSn@aspire.rjw.lan> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.29.8.106] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: RGVhciBSYWZhZWwsDQpTb3JyeSB0byBtaXNzIHRoaXMgbWFpbC4NCkkgdW5kZXJzdG9vZCB0aGF0 IGl0IHdhcyBub3QgbmVjZXNzYXJ5IHRvIGRpc2FibGUgYnVzIG1hc3RlciBhcmJpdHJhdGlvbiBv biBDMyBlbnRyeSBmb3IgQ2VudGF1ciBDUFVzLCB3aGljaCBpcyB3aHkgeW91IGNsZWFyIGJtX2Nv bnRyb2wsIHJpZ2h0Pw0KW0NvbW1lbnQgYnkgVGltXSBZZXMuDQoNCkFuZCB0aGUgZ29hbCBpcyB0 byByZWR1Y2UgdGhlIEMzIGxhdGVuY3ksIGJ1dCBJJ20gbm90IHN1cmUgYWJvdXQgdGhlIGNhY2hl IGZsdXNoaW5nIHBhcnQuICBEbyB5b3Ugd2FudCB0byBzYXkgdGhhdCBkaXNhYmxpbmcgYnVzIG1h c3RlciBhcmJpdHJhdGlvbiBjYXVzZXMgdGhlIENQVSBjYWNoZXMgdG8gYmUgZmx1c2hlZCB3aGlj aCBpcyB0aW1lLWNvbnN1bWluZyBhbmQgc2hvdWxkIGJldHRlciBiZSBhdm9pZGVkIGlmIG5vdCBu ZWNlc3Nhcnk/DQpbQ29tbWVudCBieSBUaW1dIExldCdzIHNlZSBhY3BpX2lkbGVfZW50ZXIoKSBm dW5jdGlvbi4gV2hlbiBlbnRlcmluZyBDMyB0eXBlIHN0YXRlLCBhbmQgd2hlbiBubyBibV9zdGF0 dXMgaGFzIGJlZW4gZGV0ZWN0ZWQsIHdpbGwgZXhlY3V0ZSBhY3BpX2lkbGVfZW50ZXJfYm0oKSBm dW5jdGlvbiB3aGVuIHNldHRpbmcgZmxhZ3MuYm1fY2hlY2sgd2l0aCAxLiBJbiBhY3BpX2lkbGVf ZW50ZXJfYm0oKSBmdW5jdGlvbiwgd2lsbCBub3QgZXhlY3V0ZSBBQ1BJX0ZMVVNIX0NQVV9DQUNI RSgpLiBBQ1BJX0ZMVVNIX0NQVV9DQUNIRSBuZWVkIGxvbmcgdGltZSB0byBjb21wbGV0ZS4gQWN0 dWFsbHksIHRoaXMgc29mdHdhcmUgb3BlcmF0aW9uIGZvciBjZW50YXVyIENQVSBpcyBub3QgbmVj ZXNzYXJ5LkJlY2F1c2UgdGhlIGNhY2hlIGZsdXNoIG9wZXJhdGlvbiB3aWxsIGJlIGV4ZWN1dGVk IGJ5IENQVSBtaWNyb2NvZGUgYXV0b21hdGljYWxseS4NCg0Kc3RhdGljIGludCBhY3BpX2lkbGVf ZW50ZXIoc3RydWN0IGNwdWlkbGVfZGV2aWNlICpkZXYsDQogICBzdHJ1Y3QgY3B1aWRsZV9kcml2 ZXIgKmRydiwgaW50IGluZGV4KQ0Kew0Kc3RydWN0IGFjcGlfcHJvY2Vzc29yX2N4ICpjeCA9IHBl cl9jcHUoYWNwaV9jc3RhdGVbaW5kZXhdLCBkZXYtPmNwdSk7DQpzdHJ1Y3QgYWNwaV9wcm9jZXNz b3IgKnByOw0KDQpwciA9IF9fdGhpc19jcHVfcmVhZChwcm9jZXNzb3JzKTsNCmlmICh1bmxpa2Vs eSghcHIpKQ0KcmV0dXJuIC1FSU5WQUw7DQoNCmlmIChjeC0+dHlwZSAhPSBBQ1BJX1NUQVRFX0Mx KSB7DQppZiAoYWNwaV9pZGxlX2ZhbGxiYWNrX3RvX2MxKHByKSAmJiBudW1fb25saW5lX2NwdXMo KSA+IDEpIHsNCmluZGV4ID0gQUNQSV9JRExFX1NUQVRFX1NUQVJUOw0KY3ggPSBwZXJfY3B1KGFj cGlfY3N0YXRlW2luZGV4XSwgZGV2LT5jcHUpOw0KfSBlbHNlIGlmIChjeC0+dHlwZSA9PSBBQ1BJ X1NUQVRFX0MzICYmIHByLT5mbGFncy5ibV9jaGVjaykgew0KaWYgKGN4LT5ibV9zdHNfc2tpcCB8 fCAhYWNwaV9pZGxlX2JtX2NoZWNrKCkpIHsNCmFjcGlfaWRsZV9lbnRlcl9ibShwciwgY3gsIHRy dWUpOw0KcmV0dXJuIGluZGV4Ow0KfSBlbHNlIGlmIChkcnYtPnNhZmVfc3RhdGVfaW5kZXggPj0g MCkgew0KaW5kZXggPSBkcnYtPnNhZmVfc3RhdGVfaW5kZXg7DQpjeCA9IHBlcl9jcHUoYWNwaV9j c3RhdGVbaW5kZXhdLCBkZXYtPmNwdSk7DQp9IGVsc2Ugew0KYWNwaV9zYWZlX2hhbHQoKTsNCnJl dHVybiAtRUJVU1k7DQp9DQp9DQp9DQoNCmxhcGljX3RpbWVyX3N0YXRlX2Jyb2FkY2FzdChwciwg Y3gsIDEpOw0KDQppZiAoY3gtPnR5cGUgPT0gQUNQSV9TVEFURV9DMykNCkFDUElfRkxVU0hfQ1BV X0NBQ0hFKCk7DQoNCmFjcGlfaWRsZV9kb19lbnRyeShjeCk7DQoNCmxhcGljX3RpbWVyX3N0YXRl X2Jyb2FkY2FzdChwciwgY3gsIDApOw0KDQpyZXR1cm4gaW5kZXg7DQp9DQoNClRoYW5rIHlvdS4N Cg0KVGltDQoNCi0tLS0t6YKu5Lu25Y6f5Lu2LS0tLS0NCuWPkeS7tuS6ujogUmFmYWVsIEouIFd5 c29ja2kgW21haWx0bzpyandAcmp3eXNvY2tpLm5ldF0NCuWPkemAgeaXtumXtDogMjAxOOW5tDHm nIg15pelIDIxOjI5DQrmlLbku7bkuro6IFRpbSBHdW8oQkotUkQpIDxUaW1HdW9Aemhhb3hpbi5j b20+DQrmioTpgIE6IHRnbHhAbGludXRyb25peC5kZTsgbWluZ29AcmVkaGF0LmNvbTsgaHBhQHp5 dG9yLmNvbTsgbWluZ29Aa2VybmVsLm9yZzsgeDg2QGtlcm5lbC5vcmc7IGxpbnV4LXBtQHZnZXIu a2VybmVsLm9yZzsgbGludXgta2VybmVsQHZnZXIua2VybmVsLm9yZzsgQnJ1Y2UgQ2hhbmcgKFZB UykgPEJydWNlQ2hhbmdAdmlhLWFsbGlhbmNlLmNvbT47IENvb3BlciBZYW4oQkotUkQpIDxDb29w ZXJZYW5Aemhhb3hpbi5jb20+OyBRaXl1YW4gV2FuZyhCSi1SRCkgPFFpeXVhbldhbmdAemhhb3hp bi5jb20+OyBCZW5qYW1pbiBQYW4gPEJlbmphbWluUGFuQHZpYXRlY2guY29tPg0K5Li76aKYOiBS ZTogW1BBVENIXSB4ODYvYWNwaS9jc3RhdGUgZGVsZXRlIHNvbWUgdW51c2VmdWwgb3BlcmF0aW9u cw0KDQpPbiBGcmlkYXksIERlY2VtYmVyIDIyLCAyMDE3IDEyOjU1OjA0IFBNIENFVCBUaW1HdW8g d3JvdGU6DQo+IFVudXNlZnVsIGNhY2hlIGZsdXNoIG9wZXJhdGlvbnMgd2hpY2ggd2lsbCBiZSBl eGVjdXRlZCBieSB1Y29kZSB3aGVuDQo+IGVudGVyaW5nIEMzIHdpbGwgY2F1c2UgbGFyZ2VyIEMz IGVudGVyIGxhdGVuY3kuIEFuZCB0aGUgYnVzIG1hc3Rlcg0KPiBkaXNhYmxlIG9wZXJhdGlvbiBp cyBub3QgbmVlZCBmb3IgY2VudGF1ciBwbGF0Zm9ybXMuDQoNCk15IGF0dGVtcHRzIHRvIG1ha2Ug c29tZSBzZW5zZSBvZiB0aGUgYWJvdmUgaG9wbGVzc2x5IGZhaWxlZC4gOi0vDQoNCkkgdW5kZXJz dG9vZCB0aGF0IGl0IHdhcyBub3QgbmVjZXNzYXJ5IHRvIGRpc2FibGUgYnVzIG1hc3RlciBhcmJp dHJhdGlvbiBvbiBDMyBlbnRyeSBmb3IgQ2VudGF1ciBDUFVzLCB3aGljaCBpcyB3aHkgeW91IGNs ZWFyIGJtX2NvbnRyb2wsIHJpZ2h0Pw0KDQpBbmQgdGhlIGdvYWwgaXMgdG8gcmVkdWNlIHRoZSBD MyBsYXRlbmN5LCBidXQgSSdtIG5vdCBzdXJlIGFib3V0IHRoZSBjYWNoZSBmbHVzaGluZyBwYXJ0 LiAgRG8geW91IHdhbnQgdG8gc2F5IHRoYXQgZGlzYWJsaW5nIGJ1cyBtYXN0ZXIgYXJiaXRyYXRp b24gY2F1c2VzIHRoZSBDUFUgY2FjaGVzIHRvIGJlIGZsdXNoZWQgd2hpY2ggaXMgdGltZS1jb25z dW1pbmcgYW5kIHNob3VsZCBiZXR0ZXIgYmUgYXZvaWRlZCBpZiBub3QgbmVjZXNzYXJ5Pw0KDQo+ IFNpZ25lZC1vZmYtYnk6IFRpbUd1byA8dGltZ3VvQHpoYW94aW4uY29tPg0KPiAtLS0NCj4gIGFy Y2gveDg2L2tlcm5lbC9hY3BpL2NzdGF0ZS5jIHwgMTIgKysrKysrKysrKysrDQo+ICAxIGZpbGUg Y2hhbmdlZCwgMTIgaW5zZXJ0aW9ucygrKQ0KPg0KPiBkaWZmIC0tZ2l0IGEvYXJjaC94ODYva2Vy bmVsL2FjcGkvY3N0YXRlLmMNCj4gYi9hcmNoL3g4Ni9rZXJuZWwvYWNwaS9jc3RhdGUuYyBpbmRl eCBkZGU0MzdmLi4zZWVlNDkwIDEwMDY0NA0KPiAtLS0gYS9hcmNoL3g4Ni9rZXJuZWwvYWNwaS9j c3RhdGUuYw0KPiArKysgYi9hcmNoL3g4Ni9rZXJuZWwvYWNwaS9jc3RhdGUuYw0KPiBAQCAtNTEs NiArNTEsMTggQEAgdm9pZCBhY3BpX3Byb2Nlc3Nvcl9wb3dlcl9pbml0X2JtX2NoZWNrKHN0cnVj dCBhY3BpX3Byb2Nlc3Nvcl9mbGFncyAqZmxhZ3MsDQo+ICAgICAgICAgaWYgKGMtPng4Nl92ZW5k b3IgPT0gWDg2X1ZFTkRPUl9JTlRFTCAmJg0KPiAgICAgICAgICAgICAoYy0+eDg2ID4gMHhmIHx8 IChjLT54ODYgPT0gNiAmJiBjLT54ODZfbW9kZWwgPj0gMHgwZikpKQ0KPiAgICAgICAgICAgICAg ICAgICAgICAgICBmbGFncy0+Ym1fY29udHJvbCA9IDA7DQo+ICsNCj4gKyAgICAgICBpZiAoYy0+ eDg2X3ZlbmRvciA9PSBYODZfVkVORE9SX0NFTlRBVVIpIHsNCj4gKyAgICAgICAgICAgICAgIC8q DQo+ICsgICAgICAgICAgICAgICAgKiBvbiBhbGwgY2VudGF1ciBDUFVzLCBzdyBuZWVkIG5vdCBl eGVjdXRlIGNhY2hlIGZsdXNoIG9wZXJhdGlvbg0KPiArICAgICAgICAgICAgICAgICogd2hlbiBl bnRlcmluZyBDMyB0eXBlIHN0YXRlLg0KPiArICAgICAgICAgICAgICAgICoNCj4gKyAgICAgICAg ICAgICAgICAqIE9uIGFsbCBDZW50YXVyIHBsYXRmb3JtcywgQVJCX0RJU0FCTEUgaXMgbm90IHJl cXVpcmVkIHdoaWxlDQo+ICsgICAgICAgICAgICAgICAgKiBlbnRlcmluZyBDMyB0eXBlIHN0YXRl Lg0KPiArICAgICAgICAgICAgICAgICovDQo+ICsgICAgICAgICAgICAgICBmbGFncy0+Ym1fY2hl Y2sgPSAxOw0KPiArICAgICAgICAgICAgICAgZmxhZ3MtPmJtX2NvbnRyb2wgPSAwOw0KPiArICAg ICAgICB9DQo+ICB9DQo+ICBFWFBPUlRfU1lNQk9MKGFjcGlfcHJvY2Vzc29yX3Bvd2VyX2luaXRf Ym1fY2hlY2spOw0KPg0KPiAtLQ0KPiAxLjkuMQ0KPg0KPg0KPg0KPiDkv53lr4blo7DmmI7vvJoN Cj4g5pys6YKu5Lu25ZCr5pyJ5L+d5a+G5oiW5LiT5pyJ5L+h5oGv77yM5LuF5L6b5oyH5a6a5pS2 5Lu25Lq65L2/55So44CC5Lil56aB5a+55pys6YKu5Lu25oiW5YW25YaF5a655YGa5Lu75L2V5pyq 57uP5o6I5p2D55qE5p+l6ZiF44CB5L2/55So44CB5aSN5Yi25oiW6L2s5Y+R44CCDQo+IENPTkZJ REVOVElBTCBOT1RFOg0KPiBUaGlzIGVtYWlsIGNvbnRhaW5zIGNvbmZpZGVudGlhbCBvciBsZWdh bGx5IHByaXZpbGVnZWQgaW5mb3JtYXRpb24gYW5kIGlzIGZvciB0aGUgc29sZSB1c2Ugb2YgaXRz IGludGVuZGVkIHJlY2lwaWVudC4gQW55IHVuYXV0aG9yaXplZCByZXZpZXcsIHVzZSwgY29weWlu ZyBvciBmb3J3YXJkaW5nIG9mIHRoaXMgZW1haWwgb3IgdGhlIGNvbnRlbnQgb2YgdGhpcyBlbWFp bCBpcyBzdHJpY3RseSBwcm9oaWJpdGVkLg0KPg0KDQoNCg0KDQrkv53lr4blo7DmmI7vvJoNCuac rOmCruS7tuWQq+acieS/neWvhuaIluS4k+acieS/oeaBr++8jOS7heS+m+aMh+WumuaUtuS7tuS6 uuS9v+eUqOOAguS4peemgeWvueacrOmCruS7tuaIluWFtuWGheWuueWBmuS7u+S9leacque7j+aO iOadg+eahOafpemYheOAgeS9v+eUqOOAgeWkjeWItuaIlui9rOWPkeOAgg0KQ09ORklERU5USUFM IE5PVEU6DQpUaGlzIGVtYWlsIGNvbnRhaW5zIGNvbmZpZGVudGlhbCBvciBsZWdhbGx5IHByaXZp bGVnZWQgaW5mb3JtYXRpb24gYW5kIGlzIGZvciB0aGUgc29sZSB1c2Ugb2YgaXRzIGludGVuZGVk IHJlY2lwaWVudC4gQW55IHVuYXV0aG9yaXplZCByZXZpZXcsIHVzZSwgY29weWluZyBvciBmb3J3 YXJkaW5nIG9mIHRoaXMgZW1haWwgb3IgdGhlIGNvbnRlbnQgb2YgdGhpcyBlbWFpbCBpcyBzdHJp Y3RseSBwcm9oaWJpdGVkLg0K