linux-kernel - Re: [PATCH 0/6] percpu: Per cpu code simplification fixup

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Date:	Thu, 17 Jan 2008 14:41:46 -0800
From:	Mike Travis <travis@....com>
To:	Andrew Morton <akpm@...ux-foundation.org>, Andi Kleen <ak@...e.de>,
	mingo@...e.hu
CC:	Christoph Lameter <clameter@....com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/6] percpu: Per cpu code simplification fixup

Hi Andrew,

My automatic scripts accidentally sent this mail prematurely.  Please hold
off applying yet.

Thanks,
Mike

travis@....com wrote:
> This patchset simplifies the code that arches need to maintain to support
> per cpu functionality. Most of the code is moved into arch independent
> code. Only a minimal set of definitions is kept for each arch.
> 
> The patch also unifies the x86 arch so that there is only a single
> asm-x86/percpu.h
> 
> Based on: 2.6.24-rc8-mm1
> 
> Signed-off-by: Christoph Lameter <clameter@....com>
> Signed-off-by: Mike Travis <travis@....com>
> ---
> 
> fixup:
> 
>   - rebased from 2.6.24-rc6-mm1 to 2.6.24-rc8-mm1
>     (removed changes that are in the git-x86.patch)
>   - added back in missing fold-percpu_modcopy pieces
> 
> V3->V4:
>   - rebased patchset on 2.6.24-rc6-mm1
>     (removes the percpu_modcopy changes that are already in.)
>   - change config ARCH_SETS_UP_PER_CPU_AREA to a global var
>     and use select HAVE_SETUP_PER_CPU_AREA to specify.
> 
> V2->V3:
>   - fix x86_64 non-SMP case
>   - change SHIFT_PTR to SHIFT_PERCPU_PTR
>   - fix various percpu_modcopy()'s to reference correct per_cpu_offset()
>   - s390 has a special way to determine the pointer to a per cpu area
> 
> V1->V2:
> - Add support for specifying attributes for per cpu declarations (preserves
>   IA64 model(small) attribute).
>   - Drop first patch that removes the model(small) attribute for IA64
>   - Missing #endif in powerpc generic config /  Wrong Kconfig
>   - Follow Randy's suggestions on how to do the Kconfig settings
> 

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