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Date: Wed, 22 Jun 2011 18:38:06 +0900
From: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
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To: Paul Turner <pjt@google.com>
CC: linux-kernel@vger.kernel.org, Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Bharata B Rao <bharata@linux.vnet.ibm.com>,
        Dhaval Giani <dhaval.giani@gmail.com>,
        Balbir Singh <balbir@linux.vnet.ibm.com>,
        Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>,
        Srivatsa Vaddagiri <vatsa@in.ibm.com>,
        Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>,
        Ingo Molnar <mingo@elte.hu>, Pavel Emelyanov <xemul@openvz.org>
Subject: Re: [patch 04/16] sched: validate CFS quota hierarchies
References: <20110621071649.862846205@google.com> <20110621071700.092877579@google.com>
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(2011/06/21 16:16), Paul Turner wrote:
> Add constraints validation for CFS bandwidth hierarchies.
> 
> Validate that:
>    max(child bandwidth) <= parent_bandwidth
> 
> In a quota limited hierarchy, an unconstrained entity
> (e.g. bandwidth==RUNTIME_INF) inherits the bandwidth of its parent.
> 
> This constraint is chosen over sum(child_bandwidth) as notion of over-commit is
> valuable within SCHED_OTHER.  Some basic code from the RT case is re-factored
> for reuse.
> 
> Signed-off-by: Paul Turner <pjt@google.com>
> 
> ---

The sysctl_sched_cfs_bandwidth_consistent is gone for good.
Now it is no longer complicated.

(Though there is a trivial typo pointed by Bharata, soon it will be fixed.)
Reviewed-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>


Thanks,
H.Seto