Received: by 2002:a05:6a10:16a7:0:0:0:0 with SMTP id gp39csp1215551pxb; Fri, 6 Nov 2020 04:10:48 -0800 (PST) X-Google-Smtp-Source: ABdhPJx4ClaBEygL61YveA1Qdrb4Z6q/QLh5kA5kXhQSE6PDgUxqzeMQotXBzm146JfTDKT9sswy X-Received: by 2002:a17:906:6453:: with SMTP id l19mr1701083ejn.366.1604664648396; Fri, 06 Nov 2020 04:10:48 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1604664648; cv=none; d=google.com; s=arc-20160816; b=Y9QvxnS709hp0FhDUDJiqo9v7Fn/aIx9w+Yb4DKexVdsSxeFj0hoMf6EdgvjMisjvi nD4O9ITLWHQR7WxIA0lUc/t0wSIXzJwO2gTubDNYgnMSg1PciiZoR0bxbfDlnw3wdj4a Yl2LWoX6oNxtmo+wjBCJ3Too0yPjhNS/NyTjs8mhBe8c7mD/6LIo27NUmTjN9BLCzKqz Y3JMGNdO/aQD55+jRwmwyvF54o95gLZl8mmlBkxzz0JOFqg/lFQi1JzGHUfLPQ2DlY6V jxFI0IoabZYyGgI82NaE0XZv/CuY64jgqpK9T4ZNUMYanINwFCFFGOFWWQai7VNNQ7cy 7bQA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :in-reply-to:mime-version:user-agent:date:message-id:from:references :cc:to:subject; bh=AJ1GCxgfPKDxSdytvvaDV47Zh20KnQDD5uaFwZboarM=; b=ZYhYEwIJRkgsDG7DHoA/Y+LVVJj3S2T3JVAwcAOL95u7Vy03X9CQv8giY9CAbEJ7a5 SKwz1ytlrdmFoEnEz3GqrzWDpH6ipYk157R6RKDtt8csr/ZYhPkHUJNjlLNCowcTxVbI v25XPQYDoucy1Gk0X+H3Ibg1qdsVvAuTOUahEQXog+aXbGJbk5jCITzeUju0yBen1pUE Mc9sn9wYrKpPF/W+2apTyDxIWcLFCUVsHpRv8wRf8Ju26i1No4WgQB8KTwX9h3KJmoK+ WVQHV/wSmAtfUEP9o0DAqB5ZXhvYaP+2y7C2mDXpbmO1R9i1RcP38BxJx3HwnMFfV+fm S+KA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id p5si692135ejf.528.2020.11.06.04.10.00; Fri, 06 Nov 2020 04:10:48 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727185AbgKFME5 (ORCPT + 99 others); Fri, 6 Nov 2020 07:04:57 -0500 Received: from imap3.hz.codethink.co.uk ([176.9.8.87]:35068 "EHLO imap3.hz.codethink.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726317AbgKFME5 (ORCPT ); Fri, 6 Nov 2020 07:04:57 -0500 Received: from host-92-5-241-147.as43234.net ([92.5.241.147] helo=[192.168.1.13]) by imap3.hz.codethink.co.uk with esmtpsa (Exim 4.92 #3 (Debian)) id 1kb0U9-0000Ln-TC; Fri, 06 Nov 2020 12:04:53 +0000 Subject: Re: [linux-safety] [PATCH] taskstats: remove unneeded dead assignment To: Lukas Bulwahn Cc: Balbir Singh , Tom Rix , Nathan Chancellor , Nick Desaulniers , clang-built-linux@googlegroups.com, kernel-janitors@vger.kernel.org, linux-safety@lists.elisa.tech, linux-kernel@vger.kernel.org References: <20201106062210.27920-1-lukas.bulwahn@gmail.com> <6ab2415b-0642-16ee-4be0-c909e07e7565@codethink.co.uk> From: Sudip Mukherjee Message-ID: Date: Fri, 6 Nov 2020 12:04:53 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Lukas, On 06/11/2020 10:31, Lukas Bulwahn wrote: > > > On Fri, 6 Nov 2020, Sudip Mukherjee wrote: > >> Hi Lukas, >> > > I did not try but I bet (a beverage of your choice) that the object code > remains the same also for your suggested patch. Try to disprove my claim > and possibly earn yourself a beverage when we meet... Lets decide which beverage.. ;-) Using gcc-7.2.0 for MIPS: original:- ab81d3305d578c2568fbc73aad2f9e61 kernel/taskstats.o After your change:- ab81d3305d578c2568fbc73aad2f9e61 kernel/taskstats.o After my change:- 0acae2c8d72abd3e15bf805fccdca711 kernel/taskstats.o -- Regards Sudip