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Date: Fri, 22 Apr 2011 03:28:40 +0200
From: Sam Ravnborg <sam@ravnborg.org>
Subject: Re: [RFC PATCH] kbuild: implement several W= levels
Message-ID: <20110422012840.GA10448@merkur.ravnborg.org>
References: <20110421213903.GB9660@merkur.ravnborg.org> <4DB0AA67.6030101@ece.ntua.gr>
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To: Stratos Psomadakis <psomas@ece.ntua.gr>
Cc: Michal Marek <mmarek@suse.cz>, linux-kbuild <linux-kbuild@vger.kernel.org>, lkml <linux-kernel@vger.kernel.org>, Borislav Petkov <bp@alien8.de>

> Just started looking at the patch.
> I tested it and -Wnested-externs is causing a *lot* of noise, because of
> the  nested extern ‘_NSIG_WORDS_is_unsupported_size’ in
> include/linux/signal.h, which gets included a lot.
> So, unless that changes, I think that it shouldn't be enabled for W=1.

It is just the same issue that pops up for each file.
It is easy to fix.

The ones that does not belong in W=1 is those that are triggered
by many different places in the kernel.

If they are triggered in a few .h files they look noisy, but
it is easy to fix.

	Sam