linux-kernel - Re: Regression in 2.6.23-rc2-mm2, mounting cpusets causes a hang

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Date:	Wed, 15 Aug 2007 14:00:29 -0400
From:	Lee Schermerhorn <Lee.Schermerhorn@...com>
To:	"Serge E. Hallyn" <serge@...lyn.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Paul Jackson <pj@....com>, clameter@....com,
	dhaval@...ux.vnet.ibm.com, bob.picco@...com, nacc@...ibm.com,
	kamezawa.hiroyu@...fujitsu.com, mel@...net.ie, balbir@...ibm.com,
	vatsa@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org,
	ckrm-tech@...ts.sourceforge.net
Subject: Re: Regression in 2.6.23-rc2-mm2, mounting cpusets causes a hang

On Wed, 2007-08-15 at 12:12 -0500, Serge E. Hallyn wrote:
> Quoting Paul Jackson (pj@....com):
> > Lee wrote:
> > > [altho' methinks CPUSET should select CONTAINERS rather than
> > > depend on it...]
> > 
> > Good point -- what do you think, Paul Menage?
> 
> Paul mentioned (http://www.spinics.net/lists/linux-containers/msg03775.html)
> that he was asked not to use select in Kconfigs any more.

That is unfortunate.  I view CPUSET is a "first class" option that
happens to be built on CONTAINERS.  IMO, I shouldn't have to know this
implementation detail in order to select CPUSET--indeed, even to be
offered the optio--in 'make *config'.  However, it will be hidden if I
haven't already selected containers.  Or do I misunderstand the
implications of "depends on"?

Andrew:  is the problem with select something fatal or just too
difficult to fix?

Lee

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