Received: by 2002:a05:6a10:17d3:0:0:0:0 with SMTP id hz19csp372617pxb; Sat, 10 Apr 2021 05:46:14 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyqWB1sEtbtyz62MP5gXH4stLWg/aE9/d+l4tGsxuGXKMd28V5ku7d5KcWNo3z30hduHtUt X-Received: by 2002:a17:906:7fd9:: with SMTP id r25mr19884309ejs.221.1618058774159; Sat, 10 Apr 2021 05:46:14 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1618058774; cv=none; d=google.com; s=arc-20160816; b=UVe9yPm19lisrkBGTbRVOdVszsvKDOn2GXDgY7wCw3vJgFFvZMKwzA1aAil4UvL6Qf /d0wKue5SD3BSHxmo3BqSagnWKLTutqav510XcQhXHEQoqSzcsY4a5HvVWU85BpVeh8q yVgltb86XJf7CRRXPutx2TTyqCqnOhFhzCWXbwmqMAc0Y7gr85BIQtPB4rziw5FSuRlA +kerDGDRvqZ9GXKp8+pvYj1ImstXk6LZumaWJ07anOhkYFbacO6pY1Tydt4w8T1U66n6 KFYN2fxvOeHp+ZSYh8Q5U4X3LQYRNMlA1FDzx22LrMV8cCLWzBuAjx4TD5H+2GKbrVhQ O1kA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :mime-version:accept-language:in-reply-to:references:message-id:date :thread-index:thread-topic:subject:cc:to:from; bh=MmgZSKFHlpx6WfWGsZ8V6m3BhnJO2WP2F9dFvLkKrFw=; b=qRJDUugXGQZ2IVUcQ/dTcPaGP4wocyBPh8LKxyRf5B4edxz7fML2Gc4aBeCcH//HI1 43LM6ujKQ6kSW58aWE0Bz4/ABten8uqoeJam0YeGpr7VwEDexFyaVRV9xaSGO6GCcWzc aSKpJXe6vUplfsLoejzQ1XUjEadbKjynCvDIxyG8rMC39nb5pof2UeTVhWNfcPUoBuIh HDrIVv40/QoCTTweQbrPGGr9jUa1ZjLAkQCvW5dHFTR3bdFs4DTh2hgftumnw2CPAgPj Nzyfl9tYl2Mqxj5905c/QPC1snFTRQ6YZMgH8YU9jkuFDO+eExmjGUAKkUscj9mYUX1y j59g== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=aculab.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id do3si4187560ejc.486.2021.04.10.05.45.50; Sat, 10 Apr 2021 05:46:14 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=aculab.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234519AbhDJMpO (ORCPT + 99 others); Sat, 10 Apr 2021 08:45:14 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:46193 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234262AbhDJMpN (ORCPT ); Sat, 10 Apr 2021 08:45:13 -0400 Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-265-ddWTUGa6MeiYCKVuvWi_EA-1; Sat, 10 Apr 2021 13:44:56 +0100 X-MC-Unique: ddWTUGa6MeiYCKVuvWi_EA-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) by AcuMS.aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 10 Apr 2021 13:44:55 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.012; Sat, 10 Apr 2021 13:44:55 +0100 From: David Laight To: 'David Malcolm' , Peter Zijlstra CC: Ard Biesheuvel , "linux-toolchains@vger.kernel.org" , Linux Kernel Mailing List , Josh Poimboeuf , "Jason Baron" , "Steven Rostedt (VMware)" Subject: RE: static_branch/jump_label vs branch merging Thread-Topic: static_branch/jump_label vs branch merging Thread-Index: AQHXLUcPoLE1E+ToRECqr0r/4koSQqqtr8wQ Date: Sat, 10 Apr 2021 12:44:55 +0000 Message-ID: <0a2e658a936a4b7788b23c57ff37119b@AcuMS.aculab.com> References: <5f78b7e2f9ae937271ef52ee9e999a91c2719da9.camel@redhat.com> <3c062f70ffef2dcd48a661f7c8162fb8fbaf6869.camel@redhat.com> In-Reply-To: <3c062f70ffef2dcd48a661f7c8162fb8fbaf6869.camel@redhat.com> Accept-Language: en-GB, 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 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogRGF2aWQgTWFsY29sbQ0KPiBTZW50OiAwOSBBcHJpbCAyMDIxIDE0OjQ5DQouLi4NCj4g V2l0aCB0aGUgY2F2ZWF0IHRoYXQgbXkga25vd2xlZGdlIG9mIEdDQydzIG1pZGRsZS1lbmQgaXMg bW9zdGx5IGFib3V0DQo+IGltcGxlbWVudGluZyB3YXJuaW5ncywgcmF0aGVyIHRoYW4gb3B0aW1p emF0aW9uLCBJIGRpZCBzb21lDQo+IGV4cGVyaW1lbnRhdGlvbiwgd2l0aCBnY2MgdHJ1bmsgb24g eDg2XzY0IEZXSVcuDQo+IA0KPiBHaXZlbjoNCj4gDQo+IGludCBfX2F0dHJpYnV0ZV9fKChwdXJl KSkgZm9vKHZvaWQpOw0KPiANCj4gaW50IHQodm9pZCkNCj4gew0KPiAgIGludCBhOw0KICAgICAg ICAgICA9IDA7DQo+ICAgaWYgKGZvbygpKQ0KPiAgICAgYSsrOw0KPiAgIGlmIChmb28oKSkNCj4g ICAgIGErKzsNCj4gICBpZiAoZm9vKCkpDQo+ICAgICBhKys7DQo+ICAgcmV0dXJuIGE7DQo+IH0N Cj4gDQo+IEF0IC1PMSBhbmQgYWJvdmUgdGhpcyBpcyBvcHRpbWl6ZWQgdG8gYSBzaW5nbGUgY2Fs bCB0byBmb28sIHJldHVybmluZyAwDQo+IG9yIDMgYWNjb3JkaW5nbHkuDQoNCkludGVyZXN0aW5n IGhvcnJpZCBpZGVhLg0KVGhlIGNvZGUgZ2VuZXJhdGVkIGZvciB0aGUgYWJvdmUgc2hvdWxkIGJl Og0KCWNhbGwJZm9vDQoJanoJbGFiZWwNClNvIG9ianRvb2wgY291bGQgZmluZCB0aGUgcmVsb2Nh dGlvbiBlbnRyaWVzIGZvciAnZm9vJw0KYW5kIHVzZSB0aGF0IGluZm9ybWF0aW9uIHRvIHJlcGxh Y2UgdGhlIGNhbGwgaW5zdHJ1Y3Rpb24NCihhbmQgbWF5YmUgdGhlIGp6KSB3aXRoIGEgc3VpdGFi bGUgYWx0ZXJuYXRlIGluc3RydWN0aW9uDQpzZXF1ZW5jZS4NCg0KQWx0aG91Z2ggdGhhdCBtaWdo dCBlbmQgdXAgd2l0aCBhIGdhbWUgb2YgJ3doYWNrLWEtbW9sZScNCm9uIHRoZSBwZXJ2ZXJzZSBp bnN0cnVjdGlvbiBzZXF1ZW5jZXMgdGhlIGNvbXBpbGVyDQpnZW5lcmF0ZXMuDQoNCglEYXZpZA0K DQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFy bSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAo V2FsZXMpDQo=