Re: [PATCH 05/20 v3] sched/eevdf: Add per cpu cached min_slice

[Kayra Cizmeci <kayracizmeci@gmail.com>]

On Fri, Nov 06, 2026 at 04:19:32PM +0100, Vincent Guittot wrote:
> In order to use min_slice during CPU selection, update a cached value when
> needed after en/dequeing a new task. This cached value includes current
> task.
> 
> Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
> ---
>  kernel/sched/core.c  |  1 +
>  kernel/sched/fair.c  | 28 ++++++++++++++++++++++++++++
>  kernel/sched/sched.h |  1 +
>  3 files changed, 30 insertions(+)
> 
> diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> index d7c3b43158de..031efe7d49fb 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -9012,6 +9012,7 @@ void __init sched_init(void)
>  		rq->sd = NULL;
>  		rq->rd = NULL;
>  		rq->cpu_capacity = SCHED_CAPACITY_SCALE;
> +		rq->min_slice = ULONG_MAX;

This is already getting changed to 0 in 6/20, instead of changing there,
wouldn't it be better if we changed it here from the start?

Aside from that,

Reviewed-by: Kayra Cizmeci <kayracizmeci@gmail.com>