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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 61AE8C433F5 for ; Tue, 4 Oct 2022 10:45:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229796AbiJDKpz (ORCPT ); Tue, 4 Oct 2022 06:45:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229518AbiJDKpv (ORCPT ); Tue, 4 Oct 2022 06:45:51 -0400 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.85.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 059B050504 for ; Tue, 4 Oct 2022 03:45:49 -0700 (PDT) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-264-FH1a9qrmNke5557Bg5trUA-1; Tue, 04 Oct 2022 11:45:47 +0100 X-MC-Unique: FH1a9qrmNke5557Bg5trUA-1 Received: from AcuMS.Aculab.com (10.202.163.6) by AcuMS.aculab.com (10.202.163.6) with Microsoft SMTP Server (TLS) id 15.0.1497.38; Tue, 4 Oct 2022 11:45:43 +0100 Received: from AcuMS.Aculab.com ([::1]) by AcuMS.aculab.com ([::1]) with mapi id 15.00.1497.040; Tue, 4 Oct 2022 11:45:43 +0100 From: David Laight To: 'John Stultz' , LKML CC: Pavankumar Kondeti , John Dias , Connor O'Brien , Rick Yiu , John Kacur , Qais Yousef , Chris Redpath , "Abhijeet Dharmapurikar" , Peter Zijlstra , Ingo Molnar , Juri Lelli , "Vincent Guittot" , Dietmar Eggemann , Steven Rostedt , "Thomas Gleixner" , "kernel-team@android.com" , Satya Durga Srinivasu Prabhala , "J . Avila" Subject: RE: [RFC PATCH v4 3/3] softirq: defer softirq processing to ksoftirqd if CPU is busy with RT Thread-Topic: [RFC PATCH v4 3/3] softirq: defer softirq processing to ksoftirqd if CPU is busy with RT Thread-Index: AQHY137PeCXUyXlKSE6PmZSqbVV5Vq3+C5IA Date: Tue, 4 Oct 2022 10:45:43 +0000 Message-ID: References: <20221003232033.3404802-1-jstultz@google.com> <20221003232033.3404802-4-jstultz@google.com> In-Reply-To: <20221003232033.3404802-4-jstultz@google.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 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 RnJvbTogSm9obiBTdHVsdHoNCj4gU2VudDogMDQgT2N0b2JlciAyMDIyIDAwOjIxDQo+IA0KPiBG cm9tOiBQYXZhbmt1bWFyIEtvbmRldGkgPHBrb25kZXRpQGNvZGVhdXJvcmEub3JnPg0KPiANCj4g RGVmZXIgdGhlIHNvZnRpcnEgcHJvY2Vzc2luZyB0byBrc29mdGlycWQgaWYgYSBSVCB0YXNrIGlz DQo+IHJ1bm5pbmcgb3IgcXVldWVkIG9uIHRoZSBjdXJyZW50IENQVS4gVGhpcyBjb21wbGVtZW50 cyB0aGUgUlQNCj4gdGFzayBwbGFjZW1lbnQgYWxnb3JpdGhtIHdoaWNoIHRyaWVzIHRvIGZpbmQg YSBDUFUgdGhhdCBpcyBub3QNCj4gY3VycmVudGx5IGJ1c3kgd2l0aCBzb2Z0aXJxcy4NCj4gDQo+ IEN1cnJlbnRseSBORVRfVFgsIE5FVF9SWCwgQkxPQ0sgYW5kIElSUV9QT0xMIHNvZnRpcnFzIGFy ZSBvbmx5DQo+IGRlZmVycmVkIGFzIHRoZXkgY2FuIHBvdGVudGlhbGx5IHJ1biBmb3IgbG9uZyB0 aW1lLg0KDQpEZWZlcnJpbmcgTkVUX1JYIHRvIGtzb2Z0aXJxZCBzdG9wcyB0aGUgTkVUX1JYIGNv ZGUgZnJvbQ0KcnVubmluZyB1bnRpbCB0aGUgUlQgcHJvY2VzcyBjb21wbGV0ZXMuDQoNClRoaXMg aGFzIGV4YWN0bHkgdGhlIHNhbWUgcHJvYmxlbXMgYXMgdGhlIHNvZnRpbnQgdGFraW5nDQpwcmlv cml0eSBvZiB0aGUgUlQgdGFzayAtIGp1c3QgdGhlIG90aGVyIHdheSBhcm91bmQuDQoNClVuZGVy IHZlcnkgaGlnaCB0cmFmZmljIGxvYWRzIHJlY2VpdmUgcGFja2V0cyBnZXQgbG9zdC4NCkluIG1h bnkgY2FzZXMgdGhhdCBpcyBhY3R1YWxseSBmYXIgd29yc2UgdGhhdCB0aGUgd2FrZXVwDQpvZiBh biBSVCBwcm9jZXNzIGJlaW5nIGRlbGF5ZWQgc2xpZ2h0bHkuDQoNClRoZSBpcyBubyAnb25lIHNp emUgZml0cyBhbGwnIGFuc3dlciB0byB0aGUgcHJvYmxlbS4NCg0KUGxhdXNpYmx5IGRlcGVuZGlu ZyBvbiB0aGUgcHJpb3JpdHkgb2YgdGhlIFJUIHRhc2sNCm1pZ2h0IGJlIHVzZWZ1bC4NCkJ1dCBz b21ldGltZXMgaXQgZGVwZW5kcyBvbiB0aGUgYWN0dWFsIHJlYXNvbiBmb3IgdGhlDQp3YWtldXAu DQpGb3IgaW5zdGFuY2UgYSB3YWtldXAgZnJvbSBhbiBJU1Igb3IgYSBoaXNoLXJlcyB0aW1lcg0K bWlnaHQgbmVlZCBsb3dlciBsYXRlbmN5IHRoYW4gb25lIGZyb20gYSBmdXRleC4NCg0KCURhdmlk DQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVzcyBMYWtlc2lkZSwgQnJhbWxleSBSb2FkLCBNb3VudCBG YXJtLCBNaWx0b24gS2V5bmVzLCBNSzEgMVBULCBVSw0KUmVnaXN0cmF0aW9uIE5vOiAxMzk3Mzg2 IChXYWxlcykNCg==