1 files changed, 12 insertions, 0 deletions

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 302dda81e192..94aea5b91a96 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5911,6 +5911,18 @@ skip_spare:
         if (!idlest)
                 return NULL;
 
+        /*
+         * When comparing groups across NUMA domains, it's possible for the
+         * local domain to be very lightly loaded relative to the remote
+         * domains but "imbalance" skews the comparison making remote CPUs
+         * look much more favourable. When considering cross-domain, add
+         * imbalance to the runnable load on the remote node and consider
+         * staying local.
+         */
+        if ((sd->flags & SD_NUMA) &&
+            min_runnable_load + imbalance >= this_runnable_load)
+                return NULL;
+
         if (min_runnable_load > (this_runnable_load + imbalance))
                 return NULL;