commit 04bb2f947 (sched/numa: Adjust scan rate in task_numa_placement) calculate
period_slot which should be used as base value of scan rate increase if remote
access dominate. However, current codes forget to use it, this patch fix it.
Signed-off-by: Wanpeng Li <liw...@linux.vnet.ibm.com>
---
kernel/sched/fair.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 7073c76..b077f1b3 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1358,7 +1358,7 @@ static void update_task_scan_period(struct task_struct *p,
*/
period_slot = DIV_ROUND_UP(diff, NUMA_PERIOD_SLOTS);
ratio = DIV_ROUND_UP(private * NUMA_PERIOD_SLOTS, (private +
shared));
- diff = (diff * ratio) / NUMA_PERIOD_SLOTS;
+ diff = (period_slot * ratio) / NUMA_PERIOD_SLOTS;
}
p->numa_scan_period = clamp(p->numa_scan_period + diff,
--
1.7.5.4
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
