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    SubjectRe: [PATCH -tip 09/32] sched/fair: Snapshot the min_vruntime of CPUs on force idle
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    Hi Balbir,

    On 11/22/20 6:44 AM, Balbir Singh wrote:
    >
    > This seems cumbersome, is there no way to track the min_vruntime via
    > rq->core->min_vruntime?
    Do you mean to have a core wide min_vruntime? We had a
    similar approach from v3 to v7 and it had major issues which
    broke the assumptions of cfs. There were some lengthy
    discussions and Peter explained in-depth about the issues:

    https://lwn.net/ml/linux-kernel/20200506143506.GH5298@hirez.programming.kicks-ass.net/
    https://lwn.net/ml/linux-kernel/20200515103844.GG2978@hirez.programming.kicks-ass.net/

    Thanks,
    Vineeth

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