Re: [PATCHv2 1/2] sched: introduce helper function to calculate distribution over sched class

[Christoph Hellwig]

On Thu, Feb 22, 2024 at 05:22:19PM +0800, zhaoyang.huang wrote:
> From: Zhaoyang Huang <zhaoyang.huang@xxxxxxxxxx>
> 
> As RT, DL, IRQ time could be deemed as lost time of CFS's task, some
> timing value want to know the distribution of how these spread
> approximately by using utilization account value (nivcsw is not enough
> sometimes). This commit would like to introduce a helper function to
> achieve this goal.

Maybe I'm just thick but this still looks like alphabet soup to me.
Can you try to exlain why this matters, or maybe get help from the
scheduler folks to help with explaining the concepts?