Re: [Xen-devel] Cpupools and pdata_alloc

To:	Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Subject:	Re: [Xen-devel] Cpupools and pdata_alloc
From:	George Dunlap <George.Dunlap@xxxxxxxxxxxxx>
Date:	Tue, 11 May 2010 13:52:53 -0500
Cc:	Juergen Gross <juergen.gross@xxxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
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On Tue, May 11, 2010 at 1:41 PM, Keir Fraser <keir.fraser@xxxxxxxxxxxxx> wrote:
> Well, once secondary CPUs are fully up they are of course running their
> respective idle VCPUs, so we can't call schedule_init() very late. The right
> thing to do is dynamically allocate state as CPUs are brought online -- and
> potentially free that state when CPUs are taken offline. Which is pretty
> much the direction the code points in already.

Except that it's done a little indirectly, via initializing the idle
vcpu, rather than calling something like sched_init_pcpu() when the
cpu is brought up before creating an idle vcpu for it. :-)  Anyway,
maybe once I get the credit2 stuff working again, I may think about
writing a patch to clean it up a bit... mostly so that it's easier to
follow what's going on.

 -George

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Re: [Xen-devel] Cpupools and pdata_alloc