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- Do not pull tasks to the local scheduling group if its average load is

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higher than the average system load
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Merge tag 'sched_urgent_for_v6.3_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fix from Borislav Petkov:

 - Do not pull tasks to the local scheduling group if its average load
   is higher than the average system load

* tag 'sched_urgent_for_v6.3_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/fair: Fix imbalance overflow
This commit is contained in:
Linus Torvalds 2023-04-16 10:33:43 -07:00
commit 6c538e1adb
1 changed files with 10 additions and 0 deletions
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10
kernel/sched/fair.c
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@ -10238,6 +10238,16 @@ static inline void calculate_imbalance(struct lb_env *env, struct sd_lb_stats *s
sds->avg_load = (sds->total_load * SCHED_CAPACITY_SCALE) /
sds->total_capacity;
/*
* If the local group is more loaded than the average system
* load, don't try to pull any tasks.
*/
if (local->avg_load >= sds->avg_load) {
env->imbalance = 0;
return;
}
}
/*