Re: [PATCH] do not free non slab allocated per_cpu_pageset

[Christoph Lameter]

On Fri, 22 Sep 2006, Andrew Morton wrote:

> > 
> > > I think I preferred my earlier fix, recently reworked as:
> > 
> > The problem is though that the pcp pointers must point to the static pcp 
> > arrays for bootup to succeed under NUMA. Your patch may work under SMP. 
> > For NUMA you may zap pointers to valid static pcps.
> 
> This is unclear to me.  Do you mean "the pcps must be usable during
> process_zones()'s call to kmalloc_node())" or do you mean "the pcps must
> always be usable" (in which case more work needs to be done) or what?

The pcps must be usable during process_zones() for NUMA bootstrap. 
As far as I recall: A cpu is booted with the static arrays and later 
process_zones is replacing the references to the static arrays.


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