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| author | Mel Gorman <mel@csn.ul.ie> | 2010-05-24 14:32:28 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-25 08:06:59 -0700 |
| commit | 76ab0f530e4a01d4dc20cdc1d5e87753c579dc18 (patch) | |
| tree | 8e1566df85e02f67876685c36d217fec4845f79f /include/linux/compaction.h | |
| parent | 748446bb6b5a9390b546af38ec899c868a9dbcf0 (diff) | |
| download | linux-76ab0f530e4a01d4dc20cdc1d5e87753c579dc18.tar.gz linux-76ab0f530e4a01d4dc20cdc1d5e87753c579dc18.tar.bz2 linux-76ab0f530e4a01d4dc20cdc1d5e87753c579dc18.zip | |
mm: compaction: add /proc trigger for memory compaction
Add a proc file /proc/sys/vm/compact_memory. When an arbitrary value is
written to the file, all zones are compacted. The expected user of such a
trigger is a job scheduler that prepares the system before the target
application runs.
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Acked-by: Rik van Riel <riel@redhat.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/compaction.h')
| -rw-r--r-- | include/linux/compaction.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/compaction.h b/include/linux/compaction.h index 465ca88615ed..572388880ba8 100644 --- a/include/linux/compaction.h +++ b/include/linux/compaction.h @@ -6,4 +6,10 @@ #define COMPACT_PARTIAL 1 #define COMPACT_COMPLETE 2 +#ifdef CONFIG_COMPACTION +extern int sysctl_compact_memory; +extern int sysctl_compaction_handler(struct ctl_table *table, int write, + void __user *buffer, size_t *length, loff_t *ppos); +#endif /* CONFIG_COMPACTION */ + #endif /* _LINUX_COMPACTION_H */ |