diff options
Diffstat (limited to 'kernel/sched/fair.c')
| -rw-r--r-- | kernel/sched/fair.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 6ecf455fd95..3e6a3531fa9 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -882,7 +882,8 @@ static inline void update_cfs_shares(struct cfs_rq *cfs_rq) } #endif /* CONFIG_FAIR_GROUP_SCHED */ -#ifdef CONFIG_SMP +/* Only depends on SMP, FAIR_GROUP_SCHED may be removed when useful in lb */ +#if defined(CONFIG_SMP) && defined(CONFIG_FAIR_GROUP_SCHED) /* * We choose a half-life close to 1 scheduling period. * Note: The tables below are dependent on this value. @@ -3174,6 +3175,12 @@ unlock: } /* + * Load-tracking only depends on SMP, FAIR_GROUP_SCHED dependency below may be + * removed when useful for applications beyond shares distribution (e.g. + * load-balance). + */ +#ifdef CONFIG_FAIR_GROUP_SCHED +/* * Called immediately before a task is migrated to a new cpu; task_cpu(p) and * cfs_rq_of(p) references at time of call are still valid and identify the * previous cpu. However, the caller only guarantees p->pi_lock is held; no @@ -3196,6 +3203,7 @@ migrate_task_rq_fair(struct task_struct *p, int next_cpu) atomic64_add(se->avg.load_avg_contrib, &cfs_rq->removed_load); } } +#endif #endif /* CONFIG_SMP */ static unsigned long @@ -5773,8 +5781,9 @@ const struct sched_class fair_sched_class = { #ifdef CONFIG_SMP .select_task_rq = select_task_rq_fair, +#ifdef CONFIG_FAIR_GROUP_SCHED .migrate_task_rq = migrate_task_rq_fair, - +#endif .rq_online = rq_online_fair, .rq_offline = rq_offline_fair, |