Clock register in early init

Peter De Schrijver pdeschrijver at nvidia.com
Wed May 23 05:19:54 EDT 2012


On Tue, May 22, 2012 at 07:37:15PM +0200, Turquette, Mike wrote:
> On Tue, May 22, 2012 at 5:08 AM, Peter De Schrijver
> <pdeschrijver at 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?
> 

If it can be handled inside the framework somehow. I would want to avoid
having several places where clocks inside the same SoC are initialized.

Cheers,

Peter.



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