linux-kernel - Re: [RFC PATCH 04/10] sched: Introduce priority-based task migration filter

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Date:	Thu, 4 Oct 2012 10:07:43 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	morten.rasmussen@....com
Cc:	paulmck@...ux.vnet.ibm.com, pjt@...gle.com, peterz@...radead.org,
	suresh.b.siddha@...el.com, linaro-sched-sig@...ts.linaro.org,
	linaro-dev@...ts.linaro.org, linux-kernel@...r.kernel.org,
	Robin Randhawa <robin.randhawa@....com>,
	Amit Kucheria <amit.kucheria@...aro.org>
Subject: Re: [RFC PATCH 04/10] sched: Introduce priority-based task migration filter

On 22 September 2012 00:02,  <morten.rasmussen@....com> wrote:

Hi Morten,

I would try to review your patches in coming days. For now, Just
reporting a problem
which i encountered during routine build.

> diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
> index 490f1f0..8f0f3b9 100644
> --- a/kernel/sched/fair.c
> +++ b/kernel/sched/fair.c
> @@ -3129,9 +3129,12 @@ static int __init hmp_cpu_mask_setup(void)
>   * hmp_down_threshold: max. load allowed for tasks migrating to a slower cpu
>   * The default values (512, 256) offer good responsiveness, but may need
>   * tweaking suit particular needs.
> + *
> + * hmp_up_prio: Only up migrate task with high priority (<hmp_up_prio)
>   */
>  unsigned int hmp_up_threshold = 512;
>  unsigned int hmp_down_threshold = 256;

#ifdef CONFIG_SCHED_HMP_PRIO_FILTER

> +unsigned int hmp_up_prio = NICE_TO_PRIO(CONFIG_SCHED_HMP_PRIO_FILTER_VAL);

#endif

is required here for successful build without CONFIG_SCHED_HMP_PRIO_FILTER_VAL.

--
viresh
--
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