linux-kernel - Re: [RFC PATCH] kbuild: implement several W= levels

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Message-ID: <20110422012840.GA10448@merkur.ravnborg.org>
Date:	Fri, 22 Apr 2011 03:28:40 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Stratos Psomadakis <psomas@....ntua.gr>
Cc:	Michal Marek <mmarek@...e.cz>,
	linux-kbuild <linux-kbuild@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Borislav Petkov <bp@...en8.de>
Subject: Re: [RFC PATCH] kbuild: implement several W= levels

> 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
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