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 X-Spam-Level: X-Spam-Status: No, score=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9D2C3C34047 for ; Wed, 19 Feb 2020 15:52:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7293A24677 for ; Wed, 19 Feb 2020 15:52:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582127526; bh=UzytP5h7XI//G66FxJ+l+hVO3ytWFlxi1K2bmNH76Jk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=i1l3WtDxuy5cj4qtOzP1HZjUlRoMqI63tzcqRFoBBD/HcPLgJyzxEIaqWFODjxwvC ZN+mp3KGN1Q5mdjEJ9aEq+mRr6evvo3xMMpxYN43Ak9Qd26MXcPMvTYyfpwQ8XigNT CMFO4BJfV0NhcE7OHcMJjqawo3seSaj1jVzIHA64= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726856AbgBSPwF (ORCPT ); Wed, 19 Feb 2020 10:52:05 -0500 Received: from mail-qt1-f194.google.com ([209.85.160.194]:39835 "EHLO mail-qt1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726710AbgBSPwF (ORCPT ); Wed, 19 Feb 2020 10:52:05 -0500 Received: by mail-qt1-f194.google.com with SMTP id c5so529740qtj.6; Wed, 19 Feb 2020 07:52:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=fFVDMYCiG2Jj7QSlhcVZE7ZVXQws5yCHBTafyc8gAf0=; b=Qkf7uJ1c4rV5Qm1v9FuRvQTyPOE0LdHlD1+++LZmhiqhFLAYLJCJQYulwn5mGbVQSQ b93pgugYT/+zQWagehceyEAvjfr1/EXp/YZpqn3v0IJ1ru89mZ3VSjJS6GRX/FI9LJCe XB0ajQwGjX/snUDFYuq61rJEPhUPxutyuiw8s3DOs6i/EgCsMkd4HnJsxkztYM9Me6sx 9o5BLcIFLyBJNWmV3BNFtO7yrg1L1MEmQ31pETajfSjjFWOV9MPZ54G3lgfVDbpSuNWK DqTsVYB/R3ez5ZLWy+GAX7MGLOc4sP/o+7xmXydKDgRpRW3B24yugdxMlZlSWMa/UEEc BdOQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to; bh=fFVDMYCiG2Jj7QSlhcVZE7ZVXQws5yCHBTafyc8gAf0=; b=EVPpXADiSU17GnrSF9wqICCl5gO2Jo43CqQ788plpVa0QWZxfU4z1H2nW7FUx5jEnj OFd7HCx+DjZMx71JynIWUxdH3wiDmQC3YvG5AK0xQPZYgxfKbi4ic+OwkZWP9atXRYFK MIAxTwczsbguX5/lenVsWD4bJy3BoTaAWgu9bn7Kn5JweUgxXVilAz7o/UXV4K3VEa6l NOcYAQSst8tGEsAeUajKMnjQUKz+K0s+wbaqFw97wvWrBnCN/VRWUGfTOcFWcfUjcKA5 LqHwIJH7DKEKAUq/lq9fqbnRmMN6G1/fe7G7RZdaYOLQ0N+vW9iKGqAj86TJGmGwSfd6 ecfQ== X-Gm-Message-State: APjAAAUMr7JiayCnuc9fjHlISyQqwqoBFH+PH7J+6ss7YqAAhTDJ1JxD l18OQXE+VUg6D0JxlyE1++I= X-Google-Smtp-Source: APXvYqxggCQfBsIJiialGvH6QEFJhXGEsvlvNLXoHwPOUf5pBk2TNNO+hRO+6MpcmvMYFZn6dKUAow== X-Received: by 2002:ac8:4410:: with SMTP id j16mr22707290qtn.261.1582127523849; Wed, 19 Feb 2020 07:52:03 -0800 (PST) Received: from localhost ([2620:10d:c091:500::2:e7ce]) by smtp.gmail.com with ESMTPSA id c52sm197292qtb.16.2020.02.19.07.52.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Feb 2020 07:52:03 -0800 (PST) Date: Wed, 19 Feb 2020 10:52:02 -0500 From: Tejun Heo To: Mathieu Desnoyers Cc: Li Zefan , cgroups , linux-kernel , Peter Zijlstra , Ingo Molnar , Valentin Schneider Subject: Re: [regression] cpuset: offlined CPUs removed from affinity masks Message-ID: <20200219155202.GE698990@mtj.thefacebook.com> References: <1251528473.590671.1579196495905.JavaMail.zimbra@efficios.com> <1317969050.4131.1581955387909.JavaMail.zimbra@efficios.com> <20200219151922.GB698990@mtj.thefacebook.com> <1589496945.670.1582126985824.JavaMail.zimbra@efficios.com> <20200219154740.GD698990@mtj.thefacebook.com> <59426509.702.1582127435733.JavaMail.zimbra@efficios.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <59426509.702.1582127435733.JavaMail.zimbra@efficios.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 19, 2020 at 10:50:35AM -0500, Mathieu Desnoyers wrote: > I can look into figuring out the commit introducing this issue, which I > suspect will be close to the introduction of CONFIG_CPUSET into the > kernel (which was ages ago). I'll check and let you know. Oh, yeah, I'm pretty sure it goes way back. I don't think tracking that down would be necessary. I was just wondering whether it was a recent change because you said it was a regression. -- tejun