netdev - Re: [PATCH 1/2] net/netfilter/ipvs: Move #define KMSG

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Date:	Thu, 1 Oct 2009 02:31:24 +0200 (CEST)
From:	Jan Engelhardt <jengelh@...ozas.de>
To:	Joe Perches <joe@...ches.com>
cc:	Patrick McHardy <kaber@...sh.net>,
	"David S. Miller" <davem@...emloft.net>,
	Simon Horman <horms@...ge.net.au>,
	Julian Anastasov <ja@....bg>, netfilter-devel@...r.kernel.org,
	coreteam@...filter.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, lvs-devel@...r.kernel.org
Subject: Re: [PATCH 1/2] net/netfilter/ipvs: Move #define KMSG_COMPONENT to
 Makefile


On Thursday 2009-10-01 01:09, Joe Perches wrote:
>On Thu, 2009-10-01 at 00:46 +0200, Jan Engelhardt wrote:
>> On Thursday 2009-10-01 00:37, Joe Perches wrote:
>> >This centralizes the definition and removes the
>> >replicated #defines from all files
>
>I think this increased command line length hardly matters.
>
>I think a reasonable complaint might be that it separates
>the definition of a macro from the code.  I think it's
>similar to the already used KBUILD_MODNAME macro though.

KBUILD_MODNAME is special in that it is derived from the actual
source filename. Of course you could put #define KBUILD_MODNAME "foo"
in your source file, but that is like putting changelogs there
when they belong into the git log.

>> How about an #include file for the ipvs private things?
>
>It's not just IPVS, this style could be used treewide
>without requiring extra #includes.

Well I personally prefer the #include instead of hiding such in 
Makefiles. You know, when newcomers could start doing `grep 
KMSG_COMPONENT *.[ch]`. Perhaps GCC's -include flag in a Makefile
to avoid #includes in .c files?
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