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 7979EC433FE for ; Mon, 4 Apr 2022 21:18:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355943AbiDDVUj (ORCPT ); Mon, 4 Apr 2022 17:20:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46316 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1380494AbiDDUTx (ORCPT ); Mon, 4 Apr 2022 16:19:53 -0400 Received: from mail-oa1-x30.google.com (mail-oa1-x30.google.com [IPv6:2001:4860:4864:20::30]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9CB6E33EB0 for ; Mon, 4 Apr 2022 13:17:56 -0700 (PDT) Received: by mail-oa1-x30.google.com with SMTP id 586e51a60fabf-df22f50e0cso12112970fac.3 for ; Mon, 04 Apr 2022 13:17:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=nEvcII0ovuM4EzEotmtCSIUih83HD7CSYw1Kvs+WzIU=; b=DNx1sG4uPUCc9NNECa/VtJQv3bn+9r5mWeFUqZuhgqr22wHPeG4YWrVwltutzc6xTT Ld6bfJhKBW69G7FjflRdszEome3zN6HKxJzUkW4pnIvoR/7P1G72IywwhiYnot96Huir coB4Vou6i38DNyzwwrvTuEf21xWIpkcVZiVDo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=nEvcII0ovuM4EzEotmtCSIUih83HD7CSYw1Kvs+WzIU=; b=4DSV9KmZINT8D6Fhu7GBnwZcRb2/NSGC2OvrY3uL/fftOW5qqE/5QBgKUdG3eqMJCD giI/SRXKccDcrcNrdSjBZSHLi3GsQ7U2NltlpOcKNQLps5LpezDd3aVAkrBPpsCBUbyG 04POC3SEvFZ8dLFtM7Os2mJPrk2JOdneUFwiEno1ADC6hyusYrhX+N5IsFPRfXCtQC/B 1tHI1ANNmejSHLuWVShZy8z8+shfmBhaxeV4iN2+2ZR7m3aLIxHVwpDCtWsh6JJgeL9l u5smlH4gViGcYuDESqyFeHewgd9gMt2XFSI96KNUs5kgnM1N0dVOTTVlRAIgn6/Xgd4I bvrg== X-Gm-Message-State: AOAM530wLSCztz1mTGVPTmqNyYeOfDHH9/tgscg73VFIazCOUsrbd0KH ZpcjbfPgAfjwQWnhY7pzhPa2JL8+0iWG2cxr X-Google-Smtp-Source: ABdhPJy1YASaOHaUF4GOT3ncSWR8x+K6ei6LQgfbD/4/uRe89U3T65lKldkMBMKGA9E3uchldp5AzQ== X-Received: by 2002:a05:6870:c10b:b0:da:40b:9d92 with SMTP id f11-20020a056870c10b00b000da040b9d92mr517126oad.31.1649103476013; Mon, 04 Apr 2022 13:17:56 -0700 (PDT) Received: from [192.168.86.32] (71-218-50-127.hlrn.qwest.net. [71.218.50.127]) by smtp.gmail.com with ESMTPSA id m38-20020a056870562600b000e1f4a4ed9dsm2067908oao.51.2022.04.04.13.17.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 04 Apr 2022 13:17:55 -0700 (PDT) Message-ID: <51b21470-cd72-7ae3-6f33-2dd2e1d6b716@chromium.org> Date: Mon, 4 Apr 2022 16:17:54 -0400 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Subject: Re: sched_core_balance() releasing interrupts with pi_lock held Content-Language: en-US To: Steven Rostedt , Peter Zijlstra Cc: LKML , Thomas Gleixner , Sebastian Andrzej Siewior , joel@joelfernandes.org 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> <20220329172236.48683eb5@gandalf.local.home> From: "T.J. Alumbaugh" In-Reply-To: <20220329172236.48683eb5@gandalf.local.home> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3/29/22 17:22, Steven Rostedt wrote: > 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 > Hi Peter, Just a note that if/when you send this out as a patch, feel free to add: Tested-by: T.J. Alumbaugh Thanks, - T.J.