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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT 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 57CF6C433B4 for ; Thu, 29 Apr 2021 09:05:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2241161441 for ; Thu, 29 Apr 2021 09:05:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240295AbhD2JGD (ORCPT ); Thu, 29 Apr 2021 05:06:03 -0400 Received: from mail-m17655.qiye.163.com ([59.111.176.55]:64246 "EHLO mail-m17655.qiye.163.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240247AbhD2JGC (ORCPT ); Thu, 29 Apr 2021 05:06:02 -0400 Received: from vivo-HP-ProDesk-680-G4-PCI-MT.vivo.xyz (unknown [58.250.176.229]) by mail-m17655.qiye.163.com (Hmail) with ESMTPA id B08B5400A7; Thu, 29 Apr 2021 17:05:12 +0800 (CST) From: Wang Qing To: Jonathan Corbet , Wang Qing , Mauro Carvalho Chehab , Joe Perches , Stephen Kitt , Andrew Morton , Kees Cook , Randy Dunlap , "Guilherme G. Piccoli" , Qais Yousef , Petr Mladek , Santosh Sivaraj , Vlastimil Babka , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH V2,RESEND 4/4] doc: watchdog: Modify the doc related to "watchdog/%u" Date: Thu, 29 Apr 2021 17:04:28 +0800 Message-Id: <1619687073-24686-5-git-send-email-wangqing@vivo.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1619687073-24686-2-git-send-email-wangqing@vivo.com> References: <1619687073-24686-2-git-send-email-wangqing@vivo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-HM-Spam-Status: e1kfGhgUHx5ZQUtXWQgYFAkeWUFZS1VLWVdZKFlBSE83V1ktWUFJV1kPCR oVCBIfWUFZQhpOQ1ZDHx1PSU5NHRlMSUtVEwETFhoSFyQUDg9ZV1kWGg8SFR0UWUFZT0tIVUpKS0 hKTFVLWQY+ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6NAg6TSo6AT8JQ0kpTk0pFzYO HT5PCVZVSlVKTUpCTUNMSkpITkpLVTMWGhIXVQwaFRwKEhUcOw0SDRRVGBQWRVlXWRILWUFZTkNV SU5LVUpMTVVJSUJZV1kIAVlBSEhMTDcG X-HM-Tid: 0a791ce001d2da01kuwsb08b5400a7 Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org "watchdog/%u" threads has be replaced by cpu_stop_work. The current description is extremely misleading. --- Documentation/admin-guide/sysctl/kernel.rst | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst index 1d56a6b..32b0791 --- a/Documentation/admin-guide/sysctl/kernel.rst +++ b/Documentation/admin-guide/sysctl/kernel.rst @@ -1282,11 +1282,11 @@ This parameter can be used to control the soft lockup detector. = ================================= The soft lockup detector monitors CPUs for threads that are hogging the CPUs -without rescheduling voluntarily, and thus prevent the 'watchdog/N' threads -from running. The mechanism depends on the CPUs ability to respond to timer -interrupts which are needed for the 'watchdog/N' threads to be woken up by -the watchdog timer function, otherwise the NMI watchdog — if enabled — can -detect a hard lockup condition. +without rescheduling voluntarily, and thus prevent the 'migration/N' threads +from running, causing the watchdog work fail to execute. The mechanism depends +on the CPUs ability to respond to timer interrupts which are needed for the +watchdog work to be queued by the watchdog timer function, otherwise the NMI +watchdog — if enabled — can detect a hard lockup condition. stack_erasing -- 2.7.4