Re: [PATCH 13/16] percpu: remove per_cpu__ prefix.

[Christoph Lameter]

On Thu, 15 Oct 2009, Tejun Heo wrote:

> __ia64_per_cpu_var() is slightly different from this_cpu_read() in
> that the former only works for percpu variables which fall on the
> first percpu page - ie. static percpu vars in the kernel image.  So,
> __ia64_per_cpu_var() is a bit more efficient than this_cpu_read() as
> it doesn't have to compute the address.
>
> So, what we can do is to leave the macro alone for now and then add
> sparse annotation to it later in the patch as it's basically another
> specialized accessor.  How does that sound?

Ok. The macro would be arch specific anyways.

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