netdev - Re: Reporting bugs and bisection

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Date:	Wed, 16 Apr 2008 13:01:08 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Adrian Bunk <bunk@...nel.org>, sverre@...belier.nl,
	git@...r.kernel.org, linux-kernel@...r.kernel.org,
	jmorris@...ei.org, viro@...iv.linux.org.uk, w@....eu,
	david@...g.hm, sclark46@...thlink.net, johnpol@....mipt.ru,
	rjw@...k.pl, tilman@...p.cc, Valdis.Kletnieks@...edu, lkml@....ca,
	davem@...emloft.net, jesper.juhl@...il.com,
	yoshfuji@...ux-ipv6.org, jeff@...zik.org, netdev@...r.kernel.org,
	davidn@...idnewall.com
Subject: Re: Reporting bugs and bisection

On Wed, 16 Apr 2008 12:02:47 -0700
Andrew Morton <akpm@...ux-foundation.org> wrote:

> 
> > At least with the data we have currently in git it's impossible to 
> > figure that out automatically.
> > 
> > E.g. if you look at commit f743d04dcfbeda7439b78802d35305781999aa11 
> > (ide/legacy/q40ide.c: add MODULE_LICENSE), how could you determine 
> > automatically that it is a bugfix, and the commit that introduced
> > the bug?
> > 
> > You can always get some data, but if you want to get usable
> > statistics you need explicit tags in the commits, not some
> > algorithm that tries to guess.
> 
> Well yes.  One outcome of the project would be to tell us what
> changes we'd need to make to our processes to make such data
> gathering more effective.

also.. "what is a bugfix" is an interesting thing... for some things it's very easy.
For others.. it's really hard to draw a solid line where bugs stop and features start.
(for example, is a missing cpu id in oprofile a bugfix ("oprofile doesn't work") or 
a feature ("new cpu support"). This one is one of the more simple ones even...)

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