Received: by 2002:a05:6a10:2726:0:0:0:0 with SMTP id ib38csp1358563pxb; Wed, 30 Mar 2022 01:18:32 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyj7HiFI66r7Oc3L1mnUx56MJ8GVWOWhWQ/uQhpm0p3iox/SPLydwO8wfMO0FsbkwEX7Zmq X-Received: by 2002:aa7:da52:0:b0:418:d8b1:1923 with SMTP id w18-20020aa7da52000000b00418d8b11923mr9175809eds.105.1648628312224; Wed, 30 Mar 2022 01:18:32 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1648628312; cv=none; d=google.com; s=arc-20160816; b=m9kS2i2vfg4L7e8+ZVNjigHPlYDbCqJFnSjCuHXdnPU1lClVIzojbeflttN9N1EpKN eekZ333kJ7uC0+T+2ZJ5AHbcZAO96viFTf+YXV5fRyIf9k2x0isUH8ABUESBNhpDve7Q QRWzvmANO8a3l/8b3kFLNKvWqkv095NGrJG+upTDOCamQ1V/YT+CAu94q3D89oBtSPUA rHLquTbeuZOzyXfD/lS5m3WGvw5alHUo2pNYbEozacWJ5pGUGwXYgY14CyR+vgPbA4us Nm63LUM5xKUwQyCaQBB3ac/NaSHWC2+Pf1BKjQat1JtZmHvaJey98bbNKxhgFfaRlMD+ 4z1g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date; bh=Hu1pvii69JNf50MDSz1YRlKU7Ychp6hURzSkW7Lo9ww=; b=QphuChgouBfrfyjLVB5h9fzsOybMz1MKKKOGpGZZsc4W1RqDumGR/HmdYOF62hYCRQ 8XGqcTJ/kRlZVixV2H/yUJw8F1jhj/Upihgk0pcCgvvzSjLwMfrQzykzlhUMQPt5XGDt uaCKHBnPnWdoabskgVsEV2mWDoTeEe4ix3goqCSu/upFalPIPQ2WIxgcdvmM1heGHZv9 wrpTQHR+E7Zq33WsS/2ws5b+YO3qgpEyueA4jFVWdMF+MIgUefRcKGSlRKJ+gWNM08L6 O8XybCEjWMvDBbnaCw4BTZXQzgVBjVlhXZ+63UkcrvDXAB7i8NHVDvJ2TZwc2hSzkZp6 7bsw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id i15-20020a170906850f00b006df76385e54si19218120ejx.756.2022.03.30.01.18.06; Wed, 30 Mar 2022 01:18:32 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233511AbiC2VY2 (ORCPT + 99 others); Tue, 29 Mar 2022 17:24:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43016 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231886AbiC2VY1 (ORCPT ); Tue, 29 Mar 2022 17:24:27 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2249022030B for ; Tue, 29 Mar 2022 14:22:41 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 712EBB81A2C for ; Tue, 29 Mar 2022 21:22:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 67B5AC34100; Tue, 29 Mar 2022 21:22:38 +0000 (UTC) Date: Tue, 29 Mar 2022 17:22:36 -0400 From: Steven Rostedt To: Peter Zijlstra Cc: LKML , Thomas Gleixner , Sebastian Andrzej Siewior , joel@joelfernandes.org Subject: Re: sched_core_balance() releasing interrupts with pi_lock held Message-ID: <20220329172236.48683eb5@gandalf.local.home> In-Reply-To: <20220321133037.7d0d0c7f@gandalf.local.home> References: <20220308161455.036e9933@gandalf.local.home> <20220315174606.02959816@gandalf.local.home> <20220316202734.GJ8939@worktop.programming.kicks-ass.net> <20220316210341.GD14330@worktop.programming.kicks-ass.net> <20220321133037.7d0d0c7f@gandalf.local.home> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-6.7 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 21 Mar 2022 13:30:37 -0400 Steven Rostedt wrote: > On Wed, 16 Mar 2022 22:03:41 +0100 > Peter Zijlstra wrote: > > > Does something like the below (untested in the extreme) help? > > Hi Peter, > > This has been tested extensively by the ChromeOS team and said that it does > appear to fix the problem. > > Could you get this into mainline, and tag it for stable so that it can be > backported to the appropriate stable releases? > > Thanks for the fix! > Hi Peter, I just don't want you to forget about this :-) -- Steve