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sched/fair: Small cleanup to sched_balance_newidle()

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commit e78e70dbf603c1425f15f32b455ca148c932f6c1 upstream.

Pull out the !sd check to simplify code.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Tested-by: Chris Mason <clm@meta.com>
Link: https://patch.msgid.link/20251107161739.525916173@infradead.org
[ Ajay: Modified to apply on v6.6 ]
Signed-off-by: Ajay Kaher <ajay.kaher@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Zijlstra
2025-12-03 11:22:53 +00:00
committed by Greg Kroah-Hartman
parent 17d3103325
commit 38d080768c
1 changed files with 6 additions and 5 deletions
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11
kernel/sched/fair.c
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@@ -12374,14 +12374,15 @@ static int sched_balance_newidle(struct rq *this_rq, struct rq_flags *rf)
rcu_read_lock();
sd = rcu_dereference_check_sched_domain(this_rq->sd);
if (!sd) {
rcu_read_unlock();
goto out;
}
if (!READ_ONCE(this_rq->rd->overload) ||
(sd && this_rq->avg_idle < sd->max_newidle_lb_cost)) {
if (sd)
update_next_balance(sd, &next_balance);
this_rq->avg_idle < sd->max_newidle_lb_cost) {
update_next_balance(sd, &next_balance);
rcu_read_unlock();
goto out;
}
rcu_read_unlock();