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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Wed, 02 Mar 2016 20:24:37 -0800
From:	Joe Perches <joe@...ches.com>
To:	Jianyu Zhan <nasa4836@...il.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, 2016-03-03 at 12:09 +0800, Jianyu Zhan wrote:
> 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?

Several reasons:

Most of the time, git history isn't used at all
because there is a specific named maintainer.

history isn't always appropriate as the original
authors email address is old and bounces

a .get_maintainer.conf file can be used to set
whatever defaults anyone prefers.