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SubjectRe: [PATCH 1/2] memory-hotplug: Add help info for CONFIG_MOVABLE_NODE option
On 12/14/2012 05:27 PM, Tang Chen wrote:
> This patch adds help info for CONFIG_MOVABLE_NODE option.
>
> This option allows user to online all memory of a node as movable
> memory. So that the whole node can be hotpluged. Users who don't
> use hotplug feature are also fine with this option on since they
> won't online memory as movable.
>
> Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
> Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
> ---
> mm/Kconfig | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/mm/Kconfig b/mm/Kconfig
> index 71259e0..2ad51cb 100644
> --- a/mm/Kconfig
> +++ b/mm/Kconfig
> @@ -150,6 +150,16 @@ config MOVABLE_NODE
> depends on X86_64
> depends on NUMA
> depends on BROKEN
> + help
> + Allow a node to have only movable memory. Pages used by kernel, such
> + as direct mapping pages can not be migrated. So the corresponding
> + memory device can not be hotpluged. This option allows users to
> + online all the memory of a node as movable memory so that the whole
> + node can be hotpluged. Users who don't use hotplug feature are fine
> + with this option on since they don't online memory as movable.
> +
> + Say Y here if you want to hotplug a whole node.
> + Say N here if you want kernel to use memory on all nodes evenly.

Thank you for adding the help text which should have been done by me.

Reviewed-by: Lai Jiangshan <laijs@cn.fujitsu.com>


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