diff options
| author | Lai Jiangshan <laijs@cn.fujitsu.com> | 2012-12-12 13:52:00 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-12 17:38:34 -0800 |
| commit | 20b2f52b73febce476fc9376f0296c1aa0e4f5a7 (patch) | |
| tree | 037d74ec3666d3dfc7c235c7b59b11ed9b29d3b4 /include | |
| parent | 68ae564bbac8eb9ed54ddd2529b0e29ee190b355 (diff) | |
| download | linux-20b2f52b73febce476fc9376f0296c1aa0e4f5a7.tar.bz2 | |
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
[akpm@linux-foundation.org: fix Kconfig text]
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Tested-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Cc: Jiang Liu <jiang.liu@huawei.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: David Rientjes <rientjes@google.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/nodemask.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h index c6ebdc97a428..4e2cbfa640b7 100644 --- a/include/linux/nodemask.h +++ b/include/linux/nodemask.h @@ -380,7 +380,11 @@ enum node_states { #else N_HIGH_MEMORY = N_NORMAL_MEMORY, #endif +#ifdef CONFIG_MOVABLE_NODE + N_MEMORY, /* The node has memory(regular, high, movable) */ +#else N_MEMORY = N_HIGH_MEMORY, +#endif N_CPU, /* The node has one or more cpus */ NR_NODE_STATES }; |