sched/qos: Don't unthrottle cfs_rq when cfs_rq is throttled by qos
hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I64OUS CVE: NA ------------------------------- When a cfs_rq throttled by qos, mark cfs_rq->throttled as 1, and cfs bw will unthrottled this cfs_rq by mistake, it cause a list_del_valid warning. So add macro QOS_THROTTLED(=2), when a cfs_rq is throttled by qos, we mark the cfs_rq->throttled as QOS_THROTTLED, will check the value of cfs_rq->throttled before unthrottle a cfs_rq. Signed-off-by: NZhang Qiao <zhangqiao22@huawei.com> Reviewed-by: NChen Hui <judy.chenhui@huawei.com> Reviewed-by: Nzheng zucheng <zhengzucheng@huawei.com> Signed-off-by: NYongqiang Liu <liuyongqiang13@huawei.com>
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