linux-kernel - Re: about get_maintainer.pl not showing the original author of the modified code

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Date:	Thu, 3 Mar 2016 12:09:55 +0800
From:	Jianyu Zhan <nasa4836@...il.com>
To:	Joe Perches <joe@...ches.com>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: about get_maintainer.pl not showing the original author of the
 modified code

On Thu, Mar 3, 2016 at 11:32 AM, Joe Perches <joe@...ches.com> wrote:
> with your patch get_maintainer.pl and --git-blame gives:
>
> $ ./scripts/get_maintainer.pl ~/1.diff --git-blame
> Thomas Gleixner <tglx@...utronix.de> (commit_signer:20/19=100%,authored:7/19=37%,added_lines:73/248=29%,removed_lines:38/119=32%)
> Peter Zijlstra <peterz@...radead.org> (commit_signer:3/19=16%,authored:1/19=5%)
> Andrew Morton <akpm@...ux-foundation.org> (commit_signer:3/19=16%,modified commits:2/3=67%)
> Davidlohr Bueso <dave@...olabs.net> (commit_signer:3/19=16%,authored:3/19=16%,added_lines:113/248=46%,removed_lines:20/119=17%)
> Ingo Molnar <mingo@...nel.org> (commit_signer:2/19=11%,modified commits:2/3=67%)
> Dominik Dingel <dingel@...ux.vnet.ibm.com> (authored:1/19=5%)
> Jann Horn <jann@...jh.net> (authored:1/19=5%)
> Sebastian Andrzej Siewior <bigeasy@...utronix.de> (added_lines:29/248=12%)
> "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com> (added_lines:14/248=6%,removed_lines:49/119=41%)
> Darren Hart <dvhart@...ux.intel.com> (modified commits:1/3=33%)
> Stephen Hemminger <shemminger@...ux-foundation.org> (modified commits:1/3=33%)
> Christian Borntraeger <borntrae@...ibm.com> (modified commits:1/3=33%)
> linux-kernel@...r.kernel.org (open list)
>
> vs
>
> $ ./scripts/get_maintainer.pl ~/1.diff
> Thomas Gleixner <tglx@...utronix.de> (commit_signer:20/19=100%,authored:7/19=37%,added_lines:73/248=29%,removed_lines:38/119=32%)
> Davidlohr Bueso <dave@...olabs.net> (commit_signer:3/19=16%,authored:3/19=16%,added_lines:113/248=46%,removed_lines:20/119=17%)
> Peter Zijlstra <peterz@...radead.org> (commit_signer:3/19=16%)
> Andrew Morton <akpm@...ux-foundation.org> (commit_signer:3/19=16%)
> Ingo Molnar <mingo@...nel.org> (commit_signer:2/19=11%)
> Rasmus Villemoes <linux@...musvillemoes.dk> (authored:1/19=5%)
> Darren Hart <dvhart@...ux.intel.com> (authored:1/19=5%)
> kbuild test robot <fengguang.wu@...el.com> (authored:1/19=5%)
> Sebastian Andrzej Siewior <bigeasy@...utronix.de> (added_lines:29/248=12%)
> "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com> (added_lines:14/248=6%,removed_lines:49/119=41%)


So original author's email would be spit out only if given
--git-blame, instead of by default,
which really surprises people.  Since most time we will cc original
author,  we have to use
--git-blame explicitly, thus pay the running time cost. So the runtime
 argument don't stands,
why not just enable it by default?


Regards,
Jianyu Zhan