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SubjectRe: [this_cpu_xx V4 12/20] Move early initialization of pagesets out of zone_wait_table_init()
On Sat, 3 Oct 2009, Tejun Heo wrote:

> > arch/ia64/kernel/setup.c | 1 +
> > arch/powerpc/kernel/setup_64.c | 1 +
> > arch/sparc/kernel/smp_64.c | 1 +
> > arch/x86/kernel/setup_percpu.c | 2 ++
> > include/linux/mm.h | 1 +
> > mm/page_alloc.c | 40 +++++++++++++++++++++++++++++-----------
> > mm/percpu.c | 2 ++
>
> Hmmm... why not call this function from start_kernel() after calling
> setup_per_cpu_areas() instead of modifying every implementation of
> setup_per_cpu_areas()?

Because it has to be called immediately after per cpu areas become
available. Otherwise page allocator uses will fail.



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