linux-kernel - Re: [PATCH] Fix sparsemem configuration

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Message-Id: <20091013194950.2f8f0fe1.akpm@linux-foundation.org>
Date:	Tue, 13 Oct 2009 19:49:50 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Russell King <rmk+lkml@....linux.org.uk>
Cc:	Linux Kernel List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Fix sparsemem configuration

On Mon, 5 Oct 2009 16:05:30 +0100 Russell King <rmk+lkml@....linux.org.uk> wrote:

> Currently, sparsemem is only available if EXPERIMENTAL is enabled.
> However, it hasn't ever been marked experimental.
> 
> It's been about four years since sparsemem was merged, and we have
> platforms which depend on it; allow architectures to decide whether
> sparsemem should be the default memory model.
> 
> Signed-off-by: Russell King <rmk+kernel@....linux.org.uk>
> --
>  mm/Kconfig |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/mm/Kconfig b/mm/Kconfig
> index 2477607..95b2965 100644
> --- a/mm/Kconfig
> +++ b/mm/Kconfig
> @@ -67,7 +67,7 @@ config DISCONTIGMEM
>  
>  config SPARSEMEM
>  	def_bool y
> -	depends on SPARSEMEM_MANUAL
> +	depends on (!SELECT_MEMORY_MODEL && ARCH_SPARSEMEM_ENABLE) || SPARSEMEM_MANUAL
>  
>  config FLATMEM
>  	def_bool y

Can you suggest which kernel version(s) we should merge this into?  I'm
struggling.

Ta.
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