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Subject: Re: [linux-safety] [PATCH] taskstats: remove unneeded dead assignment
To:     Lukas Bulwahn <lukas.bulwahn@gmail.com>
Cc:     Balbir Singh <bsingharora@gmail.com>, Tom Rix <trix@redhat.com>,
        Nathan Chancellor <natechancellor@gmail.com>,
        Nick Desaulniers <ndesaulniers@google.com>,
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References: <20201106062210.27920-1-lukas.bulwahn@gmail.com>
 <6ab2415b-0642-16ee-4be0-c909e07e7565@codethink.co.uk>
 <alpine.DEB.2.21.2011061126130.20338@felia>
From:   Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Message-ID: <aea9d12d-88ee-f262-4328-03993521668f@codethink.co.uk>
Date:   Fri, 6 Nov 2020 12:04:53 +0000
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Hi Lukas,

On 06/11/2020 10:31, Lukas Bulwahn wrote:
> 
> 
> On Fri, 6 Nov 2020, Sudip Mukherjee wrote:
> 
>> Hi Lukas,
>>

<snip>

> 
> 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

From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Date: Fri, 06 Nov 2020 12:04:53 +0000
Subject: Re: [linux-safety] [PATCH] taskstats: remove unneeded dead assignment
Message-Id: <aea9d12d-88ee-f262-4328-03993521668f@codethink.co.uk>
List-Id: <kernel-janitors.vger.kernel.org>
References: <20201106062210.27920-1-lukas.bulwahn@gmail.com>
 <6ab2415b-0642-16ee-4be0-c909e07e7565@codethink.co.uk>
 <alpine.DEB.2.21.2011061126130.20338@felia>
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To: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Cc: Balbir Singh <bsingharora@gmail.com>, Tom Rix <trix@redhat.com>, Nathan Chancellor <natechancellor@gmail.com>, Nick Desaulniers <ndesaulniers@google.com>, clang-built-linux@googlegroups.com, kernel-janitors@vger.kernel.org, linux-safety@lists.elisa.tech, 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,
>>

<snip>

> 
> 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