Merge branch 'linus' into sched/core

[platform/kernel/linux-starfive.git] / kernel / sched_fair.c

diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index db3f674..623e9ac 100644 (file)
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -3031,7 +3031,14 @@ redo:
 
        if (!ld_moved) {
                schedstat_inc(sd, lb_failed[idle]);
-               sd->nr_balance_failed++;
+               /*
+                * Increment the failure counter only on periodic balance.
+                * We do not want newidle balance, which can be very
+                * frequent, pollute the failure counter causing
+                * excessive cache_hot migrations and active balances.
+                */
+               if (idle != CPU_NEWLY_IDLE)
+                       sd->nr_balance_failed++;
 
                if (need_active_balance(sd, sd_idle, idle, cpu_of(busiest),
                                        this_cpu)) {