linux-pinenote/Documentation/ABI/testing/sysfs-devices-node

What:		/sys/devices/system/node/nodeX/compact
Date:		February 2010
Contact:	Mel Gorman <mel@csn.ul.ie>
Description:
		When this file is written to, all memory within that node
		will be compacted. When it completes, memory will be freed
		into blocks which have as many contiguous pages as possible
mm: compaction: add /sys trigger for per-node memory compaction Add a per-node sysfs file called compact. When the file is written to, each zone in that node is compacted. The intention that this would be used by something like a job scheduler in a batch system before a job starts so that the job can allocate the maximum number of hugepages without significant start-up cost. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Acked-by: Rik van Riel <riel@redhat.com> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by: Christoph Lameter <cl@linux-foundation.org> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 2010-05-24 14:32:29 -07:00			`What: /sys/devices/system/node/nodeX/compact`
			`Date: February 2010`
			`Contact: Mel Gorman <mel@csn.ul.ie>`
			`Description:`
			`When this file is written to, all memory within that node`
			`will be compacted. When it completes, memory will be freed`
			`into blocks which have as many contiguous pages as possible`