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

Andrew Morton
2006-08-08T06:01:28Z

On Mon, 07 Aug 2006 23:47:23 -0600
ebiederm@xmission.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?