linux-kernel - Re: [PATCH RFC] rcu: Limit GP initialization to CPUs that have been online

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Message-ID: <1331728841.7465.7.camel@marge.simpson.net>
Date:	Wed, 14 Mar 2012 13:40:41 +0100
From:	Mike Galbraith <efault@....de>
To:	paulmck@...ux.vnet.ibm.com
Cc:	sivanich@....com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC] rcu: Limit GP initialization to CPUs that have been
 online

On Wed, 2012-03-14 at 10:24 +0100, Mike Galbraith wrote: 
> On Tue, 2012-03-13 at 17:24 -0700, Paul E. McKenney wrote: 
> > The following builds, but is only very lightly tested.  Probably full
> > of bug, especially when exercising CPU hotplug.
> 
> You didn't say RFT, but...
> 
> To beat on this in a rotund 3.0 kernel, the equivalent patch would be
> the below?  My box may well answer that before you can.. hope not ;-)

(Darn, it did.  Box says boot stall with virgin patch in tip too though.
Wedging it straight into 3.0 was perhaps a tad premature;)

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