!844 A patchset of sched to improve benchmark performance

Merge Pull Request from: @NNNNicole 
 
1.sched/pelt: Relax the sync of *_sum with *_avg (patch1-patch3)
2.Adjust NUMA imbalance for multiple LLCs(patch4-patch6)
3.sched: Queue task on wakelist in the same llc if the wakee cpu is idle(patch7)
4.Clear ttwu_pending after enqueue_task(patch8)
 
 
Link:https://gitee.com/openeuler/kernel/pulls/844

 

Reviewed-by: Zucheng Zheng <zhengzucheng@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>