diff options
| author | Shaohua Li <[email protected]> | 2012-10-08 16:32:27 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2012-10-09 16:22:48 +0900 |
| commit | e64c5237cf6ff474cb2f3f832f48f2b441dd9979 (patch) | |
| tree | 88fb8ec8e9e2d32051aaacf90a306f7b124e4135 /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | f2d52fe51c8c0a18cf5fbe583bad51090d12c146 (diff) | |
mm: compaction: abort compaction loop if lock is contended or run too long
isolate_migratepages_range() might isolate no pages if for example when
zone->lru_lock is contended and running asynchronous compaction. In this
case, we should abort compaction, otherwise, compact_zone will run a
useless loop and make zone->lru_lock is even contended.
An additional check is added to ensure that cc.migratepages and
cc.freepages get properly drained whan compaction is aborted.
[[email protected]: Putback pages isolated for migration if aborting]
[[email protected]: compact_zone_order requires non-NULL arg contended]
[[email protected]: make compact_zone_order() require non-NULL arg `contended']
[[email protected]: Putback pages isolated for migration if aborting]
Signed-off-by: Andrea Arcangeli <[email protected]>
Signed-off-by: Shaohua Li <[email protected]>
Signed-off-by: Mel Gorman <[email protected]>
Acked-by: Minchan Kim <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions