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Date: Mon, 14 Jun 2010 09:52:21 +0300
From: Alexey Dobriyan <adobriyan@gmail.com>
To: Mark Hills <mark@pogo.org.uk>
Cc: linux-kernel@vger.kernel.org, David Rientjes <rientjes@google.com>,
       Michal Marek <mmarek@suse.cz>
Subject: Re: Appending '+' to version, since 2.6.35-rc2
Message-ID: <20100614065221.GB3999@x200>
References: <alpine.NEB.2.01.1006131729430.2991@jrf.vwaro.pbz>
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On Sun, Jun 13, 2010 at 08:01:26PM +0100, Mark Hills wrote:
> Commit 85a256d adds a new feature:
> 
>   [...] When CONFIG_LOCALVERSION_AUTO is not enabled, a `+' is appended
>   to the kernel version to represent that the kernel has been revised
>   since the last release unless "make LOCALVERSION=" was used to uniquely
>   identify the build.
> 
> I'm finding this inconvenient for 'casual' kernel development.
> 
> For example, my usual workflow goes something like:
> 
> 1) find something I suspect is a bug
> 2) upgrade to the latest stable or -rc kernel, to confirm
> 3) experiment with patch to fix it
> 
> Since 2.6.35-rc2, going from step 2 to 3 causes the version of the kernel 
> to change: forcing time-consuming rebuilds,

init/version.c
kernel/configs.c
+ whatever patch has changed
+ vmlinux 2 or 3 times

That's not time consuming.

> installing modules, and manual 
> changes associated with a new version number; eg. updating the lilo/grub 
> config, or the distribution's initrd.
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