diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched/fair.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 10a5a286d8e2..dfdcbfde2c5b 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -6436,13 +6436,14 @@ static struct sched_group *find_busiest_group(struct lb_env *env) if (env->idle == CPU_IDLE) { /* - * This cpu is idle. If the busiest group load doesn't - * have more tasks than the number of available cpu's and - * there is no imbalance between this and busiest group - * wrt to idle cpu's, it is balanced. + * This cpu is idle. If the busiest group is not overloaded + * and there is no imbalance between this and busiest group + * wrt idle cpus, it is balanced. The imbalance becomes + * significant if the diff is greater than 1 otherwise we + * might end up to just move the imbalance on another group */ - if ((local->idle_cpus < busiest->idle_cpus) && - busiest->sum_nr_running <= busiest->group_weight) + if ((busiest->group_type != group_overloaded) && + (local->idle_cpus <= (busiest->idle_cpus + 1))) goto out_balanced; } else { /* |