diff options
| -rw-r--r-- | kernel/sched/fair.c | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 1856e58595c3..38462305bc39 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -6686,12 +6686,11 @@ static inline bool cpu_overutilized(int cpu) } /* - * Ensure that caller can do EAS. overutilized value - * make sense only if EAS is enabled + * overutilized value make sense only if EAS is enabled */ static inline int is_rd_overutilized(struct root_domain *rd) { - return READ_ONCE(rd->overutilized); + return !sched_energy_enabled() || READ_ONCE(rd->overutilized); } static inline void set_rd_overutilized_status(struct root_domain *rd, @@ -6710,8 +6709,6 @@ static inline void check_update_overutilized_status(struct rq *rq) * overutilized field is used for load balancing decisions only * if energy aware scheduler is being used */ - if (!sched_energy_enabled()) - return; if (!is_rd_overutilized(rq->rd) && cpu_overutilized(rq->cpu)) set_rd_overutilized_status(rq->rd, SG_OVERUTILIZED); @@ -7999,7 +7996,7 @@ static int find_energy_efficient_cpu(struct task_struct *p, int prev_cpu) rcu_read_lock(); pd = rcu_dereference(rd->pd); - if (!pd || is_rd_overutilized(rd)) + if (!pd) goto unlock; /* @@ -8202,7 +8199,7 @@ select_task_rq_fair(struct task_struct *p, int prev_cpu, int wake_flags) cpumask_test_cpu(cpu, p->cpus_ptr)) return cpu; - if (sched_energy_enabled()) { + if (!is_rd_overutilized(this_rq()->rd)) { new_cpu = find_energy_efficient_cpu(p, prev_cpu); if (new_cpu >= 0) return new_cpu; @@ -10903,12 +10900,9 @@ static struct sched_group *sched_balance_find_src_group(struct lb_env *env) if (busiest->group_type == group_misfit_task) goto force_balance; - if (sched_energy_enabled()) { - struct root_domain *rd = env->dst_rq->rd; - - if (rcu_dereference(rd->pd) && !is_rd_overutilized(rd)) - goto out_balanced; - } + if (!is_rd_overutilized(env->dst_rq->rd) && + rcu_dereference(env->dst_rq->rd->pd)) + goto out_balanced; /* ASYM feature bypasses nice load balance check */ if (busiest->group_type == group_asym_packing) |