ed4a6d7f06
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>
7 lines
299 B
Text
7 lines
299 B
Text
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
|