linux-kernel - Re: [PATCH] x86_64: Auto size the per cpu area.

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Date:	Mon, 7 Aug 2006 23:01:16 -0700
From:	Andrew Morton <akpm@...l.org>
To:	ebiederm@...ssion.com (Eric W. Biederman)
Cc:	Andi Kleen <ak@...e.de>, "Randy.Dunlap" <rdunlap@...otime.net>,
	"Protasevich, Natalie" <Natalie.Protasevich@...sys.com>,
	linux-kernel@...r.kernel.org,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: [PATCH] x86_64:  Auto size the per cpu area.

On Mon, 07 Aug 2006 23:47:23 -0600
ebiederm@...ssion.com (Eric W. Biederman) wrote:

> +#ifdef CONFIG_MODULES
> +# define PERCPU_MODULE_RESERVE 8192
> +#else
> +# define PERCPU_MODULE_RESERVE 0
> +#endif
> +
> +#define PERCPU_ENOUGH_ROOM \
> +	(ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES) + \
> +	 PERCPU_MODULE_RESERVE)
> +

Seems sane, but isn't 8192 a bit small?
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