linux-kernel - Re: [PATCH 3/3] slab: avoid __initdata warning (may be a bogus one)

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Date:	Sun, 1 Apr 2007 00:30:59 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Christoph Lameter <clameter@....com>,
	Sam Ravnborg <sam@...nborg.org>
Cc:	"Paolo 'Blaisorblade' Giarrusso" <blaisorblade@...oo.it>,
	linux-kernel@...r.kernel.org,
	Christoph Lameter <clameter@...r.sgi.com>,
	Pekka Enberg <penberg@...helsinki.fi>
Subject: Re: [PATCH 3/3] slab: avoid __initdata warning (may be a bogus one)

On Sun, 1 Apr 2007 00:15:06 -0700 (PDT) Christoph Lameter <clameter@....com> wrote:

> On Sat, 31 Mar 2007, Andrew Morton wrote:
> 
> > Yes, I think this is a flase positive - we'll never touch initkmem_list3[]
> > after free_initmem() because of the transitions of g_cpucache_up.
> 
> Correct.
>  
> > (In which case set_up_list3s() shoud be __init, too?)
> 
> Correct. Its only called during slab bootstrap.
> 
> > Christoph, I think you looked at this previously?
> 
> If you change set_up_list3s to __init then we have the same issue with 
> setup_cpu_cache right?

yup.

I wonder if there's a general way in which we can suppress such false
positives.  Say, create a new section called, umm, __nowarn and
__nowarndata and then we can tag functions or data with those tags tag and teach
the checker tools to ignore them?


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