diff options
Diffstat (limited to 'kernel/sched/fair.c')
| -rw-r--r-- | kernel/sched/fair.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 18d9e75f1f6e..ebb815f6bda7 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -5473,13 +5473,21 @@ find_idlest_group(struct sched_domain *sd, struct task_struct *p, * utilized systems if we require spare_capacity > task_util(p), * so we allow for some task stuffing by using * spare_capacity > task_util(p)/2. + * + * Spare capacity can't be used for fork because the utilization has + * not been set yet, we must first select a rq to compute the initial + * utilization. */ + if (sd_flag & SD_BALANCE_FORK) + goto skip_spare; + if (this_spare > task_util(p) / 2 && imbalance*this_spare > 100*most_spare) return NULL; else if (most_spare > task_util(p) / 2) return most_spare_sg; +skip_spare: if (!idlest || 100*this_load < imbalance*min_load) return NULL; return idlest; |