linux-kernel - Re: [PATCH v2 9/9] sched,fair: Alternative sched

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Message-ID: <YHQgTtaXnMjzBUXB@hirez.programming.kicks-ass.net>
Date:   Mon, 12 Apr 2021 12:26:22 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     mingo@...nel.org, mgorman@...e.de, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        rostedt@...dmis.org, bsegall@...gle.com, bristot@...hat.com,
        joshdon@...gle.com, valentin.schneider@....com
Cc:     linux-kernel@...r.kernel.org, greg@...ah.com,
        linux@...musvillemoes.dk
Subject: Re: [PATCH v2 9/9] sched,fair: Alternative sched_slice()

On Mon, Apr 12, 2021 at 12:14:30PM +0200, Peter Zijlstra wrote:
> @@ -697,6 +703,10 @@ static u64 sched_slice(struct cfs_rq *cf
>  		}
>  		slice = __calc_delta(slice, se->load.weight, load);
>  	}
> +
> +	if (sched_feat(BASE_SLICE))
> +		slice = min(slice, (u64)sysctl_sched_min_granularity);

*Groan*... clearly that should be max().