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Subject[PATCH 12/27] sched: numa: Correct adjustment of numa_scan_period
Date
numa_scan_period is in milliseconds, not jiffies. Properly placed pages
slow the scanning rate but adding 10 jiffies to numa_scan_period means
that the rate scanning slows depends on HZ which is confusing. Get rid
of the jiffies_to_msec conversion and treat it as ms.

Signed-off-by: Mel Gorman <mgorman@suse.de>
---
kernel/sched/fair.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 2908b4e..d77bb32 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -914,7 +914,7 @@ void task_numa_fault(int node, int pages, bool migrated)
p->numa_scan_period_max = task_scan_max(p);

p->numa_scan_period = min(p->numa_scan_period_max,
- p->numa_scan_period + jiffies_to_msecs(10));
+ p->numa_scan_period + 10);
}

task_numa_placement(p);
--
1.8.1.4


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