Received: by 10.213.65.68 with SMTP id h4csp1031155imn; Wed, 28 Mar 2018 18:46:09 -0700 (PDT) X-Google-Smtp-Source: AIpwx4/Z7BJ0rc4hbnYRHI01OYDOb+plDbJ8cFAjUYGdqfAn9rA0AobBX33Dchml+4mg0hUl47jz X-Received: by 2002:a17:902:aa83:: with SMTP id d3-v6mr6034690plr.36.1522287969798; Wed, 28 Mar 2018 18:46:09 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1522287969; cv=none; d=google.com; s=arc-20160816; b=OLfPoXF5gUa93+qD8Pgb9LV8jI/n746tMpyztjEaQaRq+B+5vz1jG7xDeEgA9cuPwv M7p7SVwqBmgYHtv7awpcKK86v2tqD1xls02vj2JyxuM6ab2iDmfW+F0zUcxvKOll0GtZ +OppJPqeLdUftAS/7xkxTSu+s9zcub690SUVBAZv7wOFpFbiuhJu8d4SK1gJGLJW7jLm jLRKDnlkhDJquA3E61PSOflmSHge+SV1rAJVTAFaRiza7KobCXii3Db8vTGVTsRgbiO7 mTUTXoWWUi2Wp/Nafb3Gycc6DEKpcrwZY8Bnz26a738K1kjjsqCvYWts8sgF2ZoMeQME XB0A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:arc-authentication-results; bh=qSwRZxi5u59pg8tgWp0mFrqn7yf3Z4lBMPeoL5LKaZ8=; b=GicJVflDGbH+05v2mDrRnEZpyLCqgTmEW7rmPTm07sgQf4wGfNumK21cEWOkGoQrVz L7JgetUcdObz5eCQm6F2C3DJPq76aOPOrDKi7zpSmlEqGLkTMJiV7K3LP0dtUrGNSPOe 5qCsUJgS2kb5n+G8i9B8yDJrdArhZzKCIdOrIiSMxL2bYGbBG/U+4bcZI3aoHxL7xDIX WcyftFGMHbv/iDfyYFxe82emwY3NaoiEKpojVxdQzUWerDhY54LBnFXIi/f60O+EqxYA jxc+8aeMztq25J5VgxT3kc6FEDcOgMB7cNIw+rUkAzRgAemZmbNj5GEVsPh5YnWK6aIP r6/A== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id o12-v6si4721950plg.650.2018.03.28.18.45.55; Wed, 28 Mar 2018 18:46:09 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752027AbeC2Bon (ORCPT + 99 others); Wed, 28 Mar 2018 21:44:43 -0400 Received: from mx2.suse.de ([195.135.220.15]:47138 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751187AbeC2Bom (ORCPT ); Wed, 28 Mar 2018 21:44:42 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 97269AF75; Thu, 29 Mar 2018 01:44:41 +0000 (UTC) Date: Wed, 28 Mar 2018 18:32:24 -0700 From: Davidlohr Bueso To: Waiman Long Cc: Ingo Molnar , Peter Zijlstra , Thomas Gleixner , linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 1/2] locking/rwsem: Add DEBUG_RWSEMS to look for lock/unlock mismatches Message-ID: <20180329013224.tfryvl6lv5i72jwm@linux-n805> References: <1522246852-17501-1-git-send-email-longman@redhat.com> <1522246852-17501-2-git-send-email-longman@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <1522246852-17501-2-git-send-email-longman@redhat.com> User-Agent: NeoMutt/20170421 (1.8.2) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 28 Mar 2018, Waiman Long wrote: >+config DEBUG_RWSEMS >+ bool "RW Semaphore debugging: basic checks" >+ depends on DEBUG_KERNEL && RWSEM_SPIN_ON_OWNER Why depend on RWSEM_SPIN_ON_OWNER? Doesn't everyone benefit from this? For example, DEBUG_MUTEXES does not need it. Thanks, Davidlohr