mm: sched: numa: fix NUMA balancing when !SCHED_DEBUG

Commit 3105b86a9fee ("mm: sched: numa: Control enabling and disabling of
NUMA balancing if !SCHED_DEBUG") defined numabalancing_enabled to
control the enabling and disabling of automatic NUMA balancing, but it
is never used.

I believe the intention was to use this in place of sched_feat_numa(NUMA).

Currently, if SCHED_DEBUG is not defined, sched_feat_numa(NUMA) will
never be changed from the initial "false".

Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index bb456f4..9565645 100644 (file)
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -851,7 +851,7 @@ void task_numa_fault(int node, int pages, bool migrated)
 {
        struct task_struct *p = current;
 
-       if (!sched_feat_numa(NUMA))
+       if (!numabalancing_enabled)
                return;
 
        /* FIXME: Allocate task-specific structure for placement policy here */
@@ -5786,7 +5786,7 @@ static void task_tick_fair(struct rq *rq, struct task_struct *curr, int queued)
                entity_tick(cfs_rq, se, queued);
        }
 
-       if (sched_feat_numa(NUMA))
+       if (numabalancing_enabled)
                task_tick_numa(rq, curr);
 
        update_rq_runnable_avg(rq, 1);