linux-kernel - Re: [patch 02/15] sched: validate CFS quota hierarchies

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Message-ID: <20110324063126.GA2721@in.ibm.com>
Date:	Thu, 24 Mar 2011 12:01:26 +0530
From:	Bharata B Rao <bharata@...ux.vnet.ibm.com>
To:	Paul Turner <pjt@...gle.com>
Cc:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Dhaval Giani <dhaval.giani@...il.com>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>,
	Srivatsa Vaddagiri <vatsa@...ibm.com>,
	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...e.hu>, Pavel Emelyanov <xemul@...nvz.org>
Subject: Re: [patch 02/15] sched: validate CFS quota hierarchies

On Tue, Mar 22, 2011 at 08:03:28PM -0700, Paul Turner wrote:
> Add constraints validation for CFS bandwidth hierachies.
> 
> +static u64 normalize_cfs_quota(struct task_group *tg,
> +		               struct cfs_schedulable_data *d)
> +{
> +	u64 quota, period;
> +	struct load_weight lw;
> +
> +	if (tg == d->tg) {
> +		period = d->period;
> +		quota = d->quota;
> +	} else {
> +		period = tg_get_cfs_period(tg);
> +		quota = tg_get_cfs_quota(tg);
> +	}
> +
> +	if (quota == RUNTIME_INF)
> +		return RUNTIME_INF;
> +
> +	lw.weight = period;
> +	lw.inv_weight = 0;
> +
> +	return calc_delta_mine(quota, max_cfs_quota_period, &lw) - 1;

Time to rename calc_delta_mine to something more meaningful ?

Regards,
Bharata.
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