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Subject: Re: [PATCH] Enable hashdist by default on PowerPC
From: David Miller <davem@davemloft.net>
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From: Anton Blanchard <anton@samba.org>
Date: Wed, 18 Feb 2009 16:11:12 +1100

> @@ -145,9 +145,10 @@ extern void *alloc_large_system_hash(const char *tablename,
>  #define HASH_EARLY	0x00000001	/* Allocating during early boot? */
>  
>  /* Only NUMA needs hash distribution.
> - * IA64 and x86_64 have sufficient vmalloc space.
> + * IA64, x86_64 and PowerPC have sufficient vmalloc space.
>   */
> -#if defined(CONFIG_NUMA) && (defined(CONFIG_IA64) || defined(CONFIG_X86_64))
> +#if defined(CONFIG_NUMA) && (defined(CONFIG_IA64) || defined(CONFIG_X86_64) || \
> +	defined(CONFIG_PPC64))
>  #define HASHDIST_DEFAULT 1
>  #else
>  #define HASHDIST_DEFAULT 0

I should probably do this on sparc64 too.

Why don't we just change this thing to CONFIG_64BIT?