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=-0.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 A01BBC65BAF for ; Mon, 10 Dec 2018 07:50:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 55396204FD for ; Mon, 10 Dec 2018 07:50:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 55396204FD Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726635AbeLJHuZ (ORCPT ); Mon, 10 Dec 2018 02:50:25 -0500 Received: from szxga07-in.huawei.com ([45.249.212.35]:51419 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726210AbeLJHuZ (ORCPT ); Mon, 10 Dec 2018 02:50:25 -0500 Received: from DGGEMS414-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 53C677816CEB0; Mon, 10 Dec 2018 15:50:22 +0800 (CST) Received: from [127.0.0.1] (10.142.68.147) by DGGEMS414-HUB.china.huawei.com (10.3.19.214) with Microsoft SMTP Server id 14.3.408.0; Mon, 10 Dec 2018 15:50:22 +0800 Subject: Re: Disable RT_GROUP_SCHED in PREEMPT_RT_FULL To: zhang jianwei , tglx , efault , , Linux Kernel Mailing List References: From: gengdongjiu Message-ID: <194aa1b6-0d98-d4ef-397a-a6ddca02cc6a@huawei.com> Date: Mon, 10 Dec 2018 15:50:20 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="gb18030" Content-Language: en-US Content-Transfer-Encoding: 8bit X-Originating-IP: [10.142.68.147] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Loop RT kernel Mailing lists. On 2018/12/10 1:04, zhang jianwei wrote: > hi Thomas and Mike， > i say you disabled the RT_GROUP_SCHED in RT kernel because of strange cpu stall was observed. currently, in my projects, I need enable RT_GROUP_SCHED in RT kernel. I’d like to know how to reproduce the strange cpu stall in order to fix this bug. can you guys give me some advice  about how to fix this problem. > Thanks in advance! > > > patched mentioned  > https://lore.kernel.org/patchwork/patch/313215/ > >