diff options
| author | Mel Gorman <[email protected]> | 2013-10-07 11:29:06 +0100 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2013-10-09 12:40:33 +0200 |
| commit | 073b5beea735c7e1970686c94ff1f3aaac790a2a (patch) | |
| tree | ba44188b0a4b52fddd1d0a7b9a6a214ea6212def | |
| parent | 1bc115d87dffd1c43bdc3c9c9d1e3a51c195d18e (diff) | |
sched/numa: Remove check that skips small VMAs
task_numa_work skips small VMAs. At the time the logic was to reduce the
scanning overhead which was considerable. It is a dubious hack at best.
It would make much more sense to cache where faults have been observed
and only rescan those regions during subsequent PTE scans. Remove this
hack as motivation to do it properly in the future.
Signed-off-by: Mel Gorman <[email protected]>
Reviewed-by: Rik van Riel <[email protected]>
Cc: Andrea Arcangeli <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Srikar Dronamraju <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
| -rw-r--r-- | kernel/sched/fair.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 3383079b1508..862d20d02e5c 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1127,10 +1127,6 @@ void task_numa_work(struct callback_head *work) if (!vma_migratable(vma)) continue; - /* Skip small VMAs. They are not likely to be of relevance */ - if (vma->vm_end - vma->vm_start < HPAGE_SIZE) - continue; - do { start = max(start, vma->vm_start); end = ALIGN(start + (pages << PAGE_SHIFT), HPAGE_SIZE); |