linux-kernel - Re: [PATCH v2 2/2] sched/fair: Fix task_fits

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Date:   Tue, 23 Nov 2021 09:38:40 +0100
From:   Vincent Guittot <vincent.guittot@...aro.org>
To:     Vincent Donnefort <Vincent.Donnefort@....com>
Cc:     peterz@...radead.org, mingo@...hat.com,
        linux-kernel@...r.kernel.org, dietmar.eggemann@....com,
        Valentin.Schneider@....com
Subject: Re: [PATCH v2 2/2] sched/fair: Fix task_fits_capacity() capacity type

On Thu, 18 Nov 2021 at 15:15, Vincent Donnefort
<vincent.donnefort@....com> wrote:
>
> capacity is an unsigned long value, compared with a task utilization which
> is unsigned long as well. There's no need for an intermediate implicit
> long cast.
>
> Fixes: 3b1baa6496e6 ("sched/fair: Add 'group_misfit_task' load-balance type")
> Signed-off-by: Vincent Donnefort <vincent.donnefort@....com>

Reviewed-by: Vincent Guittot <vincent.guittot@...aro.org>

>
> diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
> index 8fde6e10e24b..26a88975f68a 100644
> --- a/kernel/sched/fair.c
> +++ b/kernel/sched/fair.c
> @@ -4070,7 +4070,8 @@ static inline void util_est_update(struct cfs_rq *cfs_rq,
>         trace_sched_util_est_se_tp(&p->se);
>  }
>
> -static inline int task_fits_capacity(struct task_struct *p, long capacity)
> +static inline int task_fits_capacity(struct task_struct *p,
> +                                    unsigned long capacity)
>  {
>         return fits_capacity(uclamp_task_util(p), capacity);
>  }
> --
> 2.25.1
>