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@xxxxxxxxxxxxxx> > Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx> > --- > 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@xxxxxxxxxxxxxx> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>