linux-kernel - Re: [PATCH] Hookup group-scheduler with task container infrastructure

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Date:	Tue, 18 Sep 2007 16:14:37 +0530
From:	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	containers@...ts.osdl.org, Ingo Molnar <mingo@...e.hu>,
	ckrm-tech@...ts.sourceforge.net, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Hookup group-scheduler with task container infrastructure

On Tue, Sep 18, 2007 at 05:19:45PM +0900, KAMEZAWA Hiroyuki wrote:
> Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com> wrote:
> > +	tg->cfs_rq = kzalloc(sizeof(cfs_rq) * num_possible_cpus(), GFP_KERNEL);
> > +	if (!tg->cfs_rq)
> > +		goto err;
> > +	tg->se = kzalloc(sizeof(se) * num_possible_cpus(), GFP_KERNEL);
> > +	if (!tg->se)
> > +		goto err;
> Sorry for very lazy responce..
> 
> num_possible_cpus() just returns # of possible cpus. Then it will not return
> Max-cpu-id to be used. I think just use NR_CPUS here is an easy way.

Good catch! Yes, you are right, the pointer array needs to be NR_CPUS
size.

On closer examination, I think I can simply use alloc_percpu() here.
Will send a patch after some testing.

-- 
Regards,
vatsa
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