Re: [PATCH 2/2] sched: adjust SCHED_IDLE interactions

[Peter Zijlstra]

On Thu, Jul 29, 2021 at 07:00:19PM -0700, Josh Don wrote:
> 1) Ignore min_granularity for determining the sched_slide of a
> SCHED_IDLE entity when it is competing with a non SCHED_IDLE entity.
> This reduces the latency of getting a non SCHED_IDLE entity back on cpu,
> at the expense of increased context switch frequency of SCHED_IDLE
> entities.

> 2) Don't give sleeper credit to SCHED_IDLE entities when they wake onto
> a cfs_rq with non SCHED_IDLE entities. As a result, newly woken
> SCHED_IDLE entities will take longer to preempt non SCHED_IDLE entities.

ISTR we had a rule about one change per patch :-)