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SubjectRe: [patch 1/5] x86_64: Change init sections for CPU hotplug support
On Thu, Jun 02, 2005 at 02:14:28PM -0600, Zwane Mwaikambo wrote:
> On Thu, 2 Jun 2005, Ashok Raj wrote:
> > This patch adds __cpuinit and __cpuinitdata sections that need to exist
> > past boot to support cpu hotplug.
> >
> > Caveat: This is done *only* for EM64T CPU Hotplug support, on request from
> > Andi Kleen. Much of the generic hotplug code in kernel, and none of the
> > other archs that support CPU hotplug today, i386, ia64, ppc64, s390 and
> > parisc dont mark sections with __cpuinit, but only mark them as __devinit,
> > and __devinitdata.
> >
> > If someone is motivated to change generic code, we need to make sure all
> > existing hotplug code does not break, on other arch's that dont use
> > __cpuinit, and __cpudevinit.
> I'll do i386.

The generic kernel pieces also need to be converted, which is probably the
bigger chunk of code that could have been marked __cpuinit in cases where
hotplug is not supported.

I can do the ia64 pieces...

Ashok Raj
- Open Source Technology Center
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