linux-kernel - Re: [patch 02/41] cpu alloc: The allocator

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Message-ID: <Pine.LNX.4.64.0806101127520.17349@schroedinger.engr.sgi.com>
Date:	Tue, 10 Jun 2008 11:28:07 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Eric Dumazet <dada1@...mosbay.com>
cc:	Mike Travis <travis@....com>, akpm@...ux-foundation.org,
	linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
	David Miller <davem@...emloft.net>,
	Peter Zijlstra <peterz@...radead.org>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [patch 02/41] cpu alloc: The allocator

On Tue, 10 Jun 2008, Eric Dumazet wrote:

> Well, MODULE is not CONFIG_MODULES :)
> 
> If compiling an object that is going to be statically linked to kernel, MODULE
> is not defined, so we have shared objects.
> 
> When compiling a module, we cannot *yet* use .data.percpu.shared_aligned
> section, since module loader wont handle this section.
> 
> Alternative is to change modules linking for all arches to merge
> .data.percpu{*} subsections correctly, or tell module loader to take into
> account all .data.percpu sections.
> 
> AFAIK no module uses DEFINE_PER_CPU_SHARED_ALIGNED() yet...

Ahhh. Makes sense. Add a comment to explain this?

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