Messages in this thread | | | Subject | Re: [PATCH -tip 09/32] sched/fair: Snapshot the min_vruntime of CPUs on force idle | From | Vineeth Pillai <> | Date | Mon, 23 Nov 2020 07:31:31 -0500 |
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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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