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=-1.3 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 D8C65C2BA19 for ; Mon, 6 Apr 2020 14:34:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A2CE42415B for ; Mon, 6 Apr 2020 14:34:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586183649; bh=GTATBnUQjHkNYmK08Xo4akxzVeoZee8mUS0AUMxFf4I=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=Sd++b3DbYh7wVfRz0j9HZTZdUV/11W9XYiXNW7PQIew9JduJPIUO0CE5JdE4DAgkO pb9kLozwj/glaV5NvUMnAGPHYa5b87qo6Jy9G9j6B5hk6Wm5k9xBa2ygJexdqMbvXr oFIgy+gCKSpjDgM098EHAoY5EtTaGdsyj9sEUIGw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728718AbgDFOeJ (ORCPT ); Mon, 6 Apr 2020 10:34:09 -0400 Received: from mail-qk1-f177.google.com ([209.85.222.177]:33082 "EHLO mail-qk1-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728406AbgDFOeI (ORCPT ); Mon, 6 Apr 2020 10:34:08 -0400 Received: by mail-qk1-f177.google.com with SMTP id v7so16385526qkc.0; Mon, 06 Apr 2020 07:34:07 -0700 (PDT) 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=8+jcnJTXIga9mkqHp3/5JxbQM57y376bXrCDo/ExKrY=; b=dGSTYEP5uA6qHfprtplk07U7wkOAEHGJIx4v6hfun7FO8q6S6D4pwPBnwLsU3pP83Y JZRw7+elch1nmfQtGY+9kSnNbjXh6McBm/e0fx3RrW/Osv8pWY9B+UyxwbQMZVjKUIKn FCqsUYZN5mh4h5E4WJw0K3zdisDMMN8hRPTwSPFBkRhVz1oWIlVYDmfqolDvjEo5ppQa jm8M7Kv6g59A7GbX/bJu7CkDzV4nF7paMpVPLN1O0oR70Ama+MZqxv8mXPJcMGPVD41y TXGyslkyDXnz9ABZ99vOb6Byf+vqCpYWwyNK8YGoaWBzygjeJcgfmoth8ZeMTH4hY7a9 6E9A== 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=8+jcnJTXIga9mkqHp3/5JxbQM57y376bXrCDo/ExKrY=; b=FY+UMa/K6JsUCk/WjfnHFRu9f1EbN5z/YGVCEWrTnFd18eT7Wx4lsFqgkItR3UTbOz NdoaDA2QHtlO2jY3mGDhUdaNyHy0NiBWjQ9z3xDNEu5E5BL1TyCwVMl13zjPmMeWiCZT BkbuNR4K+bNHmtEpw9jl52eP8mHRv5gCRCBZB7t3p02fJB5+cwDsTc9llWNMtg3JBY4X MtnkNv1l1ctasR58whtcmbiY3QXkiCbaHjb7jy45eb3WUQYmJSc5VpRaF9fw10EII0nO LFOvoIXvF0QRGnuOePIg1V7TxcK1n2iI0F3ceZYtV7pKyJtXpB46hpZaDAK9QzKebtBo G2lQ== X-Gm-Message-State: AGi0Pua4KvStMBXucpeanOwiggqkCqUSYJSDQ6nC+V+f+6pr/n9msUih 6jaKIzEhc+STc0t4C62ED90= X-Google-Smtp-Source: APiQypIl/HBxvhFRvUyRCeNhpPwhQbDSrDTvcnmU7hn232XoQYm2bs0nS7YDyfB6VylVGCsrdlc++g== X-Received: by 2002:ae9:c312:: with SMTP id n18mr20722643qkg.472.1586183646991; Mon, 06 Apr 2020 07:34:06 -0700 (PDT) Received: from localhost ([2620:10d:c091:480::eeba]) by smtp.gmail.com with ESMTPSA id m5sm13539502qtk.85.2020.04.06.07.34.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Apr 2020 07:34:06 -0700 (PDT) Date: Mon, 6 Apr 2020 10:34:05 -0400 From: Tejun Heo To: Qais Yousef Cc: Qian Cai , Prateek Sood , Li Zefan , cgroups@vger.kernel.org, LKML , Peter Zijlstra Subject: Re: Deadlock due to "cpuset: Make cpuset hotplug synchronous" Message-ID: <20200406143405.GH162390@mtj.duckdns.org> References: <20200325191922.GM162390@mtj.duckdns.org> <20200326101529.xh763j5frq2r7mqv@e107158-lin> <20200403145523.GC162390@mtj.duckdns.org> <20200406105522.c66p4vzzzylety5d@e107158-lin.cambridge.arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200406105522.c66p4vzzzylety5d@e107158-lin.cambridge.arm.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Apr 06, 2020 at 11:55:23AM +0100, Qais Yousef wrote: > What would be the right approach to get a fix in then? We have been skipping > this test for a while and we'd like to enable it but this failure is a > blocking issue. Update the test so that it accounts for the async nature of the operation? -- tejun