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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 60984C33CB3 for ; Tue, 14 Jan 2020 09:17:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2C1372084D for ; Tue, 14 Jan 2020 09:17:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728918AbgANJR3 (ORCPT ); Tue, 14 Jan 2020 04:17:29 -0500 Received: from mga12.intel.com ([192.55.52.136]:59465 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725820AbgANJR2 (ORCPT ); Tue, 14 Jan 2020 04:17:28 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Jan 2020 01:17:28 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,432,1571727600"; d="scan'208";a="225168169" Received: from unknown (HELO [10.238.129.140]) ([10.238.129.140]) by orsmga003.jf.intel.com with ESMTP; 14 Jan 2020 01:17:26 -0800 Subject: Re: [PATCH 3/4] x86/resctrl: Fix a deadlock due to inaccurate active reference of kernfs node To: Sasha Levin , tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com Cc: x86@kernel.org, linux-kernel@vger.kernel.org, pei.p.jia@intel.com, stable@vger.kernel.org, Xiaochen Shen References: <1578500886-21771-4-git-send-email-xiaochen.shen@intel.com> <20200109143630.DD673206ED@mail.kernel.org> From: Xiaochen Shen Message-ID: <9a9ab238-604c-0c1f-f168-dd27ba89e989@intel.com> Date: Tue, 14 Jan 2020 17:17:25 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 MIME-Version: 1.0 In-Reply-To: <20200109143630.DD673206ED@mail.kernel.org> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Sasha, The backporting for v4.14.x stable tree needs some manual tweaking due to difference code bases: 1. x86/resctrl rename/re-arrange in v5.0 upstream kernel. 2. Code change in upstream commit cfd0f34e4cd5 ("x86/intel_rdt: Add diagnostics when making directories"). The backporting for v4.19.x stable tree needs some manual tweaking due to difference code bases: x86/resctrl rename/re-arrange in v5.0 upstream kernel. I will work on the backporting once this patch is merged into upstream. Thank you. On 1/9/2020 22:36, Sasha Levin wrote: > Hi, > > [This is an automated email] > > This commit has been processed because it contains a "Fixes:" tag, > fixing commit: c7d9aac61311 ("x86/intel_rdt/cqm: Add mkdir support for RDT monitoring"). > > The bot has tested the following trees: v5.4.8, v4.19.93, v4.14.162. > > v5.4.8: Build OK! > v4.19.93: Failed to apply! Possible dependencies: > Unable to calculate > > v4.14.162: Failed to apply! Possible dependencies: > cfd0f34e4cd5 ("x86/intel_rdt: Add diagnostics when making directories") > > > NOTE: The patch will not be queued to stable trees until it is upstream. > > How should we proceed with this patch? > -- Best regards, Xiaochen