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authorMel Gorman <mel@csn.ul.ie>2011-01-13 18:45:54 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 20:32:33 -0500
commitb7aba6984dc048503b69c2a885098cdd430832bf (patch)
tree1f682189bd967feaf28c2978445c7ebe82116185 /mm/vmscan.c
parent2d90508f638241a2e7422d884767398296ebe720 (diff)
mm: compaction: add trace events for memory compaction activity
In preparation for a patches promoting the use of memory compaction over lumpy reclaim, this patch adds trace points for memory compaction activity. Using them, we can monitor the scanning activity of the migration and free page scanners as well as the number and success rates of pages passed to page migration. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Rik van Riel <riel@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
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