Clock register in early init

[lethal@linux-sh.org (Paul Mundt)]

On Tue, May 22, 2012 at 10:37:15AM -0700, Turquette, Mike wrote:
> On Tue, May 22, 2012 at 5:08 AM, Peter De Schrijver
> <pdeschrijver@nvidia.com> wrote:
> >> We had at-least that on the older Samsung parts and they where still
> >> growing. I would suggest that in a multi-kernel image situation the
> >> more data that can be discarded after init-time the better.
> >>
> >> Also, __initdata gets gathered into one place so there's no possibility
> >> of page fragmentation there. If you mean fragmentation of the memory
> >> map, then allocate the size of all the clocks you know of at init time
> >> in one go.
> >>
> >
> > That would work, except that clocks are needed before kmalloc is available.
> >
> 
> Is static initialization the only way to solve this problem?  What
> about using the bootmem allocator for early init clocks?
> 
This is what sh does for its asm/clkdev.h __clkdev_alloc(), which is
really the only difference over the ARM version. It always seemed a bit
silly to me to make early allocation an arch-specific property.