[RFC PATCH 3/5] sched/fair: Don't use parked cpu for load balancing

[Shrikanth Hegde <sshegde@linux.ibm.com>]

While doing load balance, don't consider the parked CPUs. As far as load
balance is considered, a parked CPU is as good as offline CPU. 

Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
---
 kernel/sched/fair.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 125912c0e9dd..f48f55ca1522 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -11761,6 +11761,7 @@ static int sched_balance_rq(int this_cpu, struct rq *this_rq,
 	};
 
 	cpumask_and(cpus, sched_domain_span(sd), cpu_active_mask);
+	cpumask_andnot(cpus, cpus, cpu_parked_mask);
 
 	schedstat_inc(sd->lb_count[idle]);
 
-- 
2.39.3