| commit | 20b2f52b73febce476fc9376f0296c1aa0e4f5a7 | [log] [tgz] |
|---|---|---|
| author | Lai Jiangshan <[email protected]> | Wed Dec 12 13:52:00 2012 -0800 |
| committer | Linus Torvalds <[email protected]> | Wed Dec 12 17:38:34 2012 -0800 |
| tree | 037d74ec3666d3dfc7c235c7b59b11ed9b29d3b4 | |
| parent | 68ae564bbac8eb9ed54ddd2529b0e29ee190b355 [diff] [blame] |
numa: add CONFIG_MOVABLE_NODE for movable-dedicated node We need a node which only contains movable memory. This feature is very important for node hotplug. If a node has normal/highmem, the memory may be used by the kernel and can't be offlined. If the node only contains movable memory, we can offline the memory and the node. All are prepared, we can actually introduce N_MEMORY. add CONFIG_MOVABLE_NODE make we can use it for movable-dedicated node [[email protected]: fix Kconfig text] Signed-off-by: Lai Jiangshan <[email protected]> Tested-by: Yasuaki Ishimatsu <[email protected]> Signed-off-by: Wen Congyang <[email protected]> Cc: Jiang Liu <[email protected]> Cc: KOSAKI Motohiro <[email protected]> Cc: Minchan Kim <[email protected]> Cc: Mel Gorman <[email protected]> Cc: David Rientjes <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Rusty Russell <[email protected]> Cc: Greg KH <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 3572716..2bf0d43 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c
@@ -90,6 +90,9 @@ #ifdef CONFIG_HIGHMEM [N_HIGH_MEMORY] = { { [0] = 1UL } }, #endif +#ifdef CONFIG_MOVABLE_NODE + [N_MEMORY] = { { [0] = 1UL } }, +#endif [N_CPU] = { { [0] = 1UL } }, #endif /* NUMA */ };