From: [email protected]
Date: Thu, 27 Dec 2007 16:10:49 -0800
> V1->V2:
> - add support for PER_CPU_ATTRIBUTES
>
> Add the ability to use generic/percpu even if the arch needs to override
> several aspects of its operations. This will enable the use of generic
> percpu.h for all arches.
>
> An arch may define:
>
> __per_cpu_offset Do not use the generic pointer array. Arch must
> define per_cpu_offset(cpu) (used by x86_64, s390).
>
> __my_cpu_offset Can be defined to provide an optimized way to determine
> the offset for variables of the currently executing
> processor. Used by ia64, x86_64, x86_32, sparc64, s/390.
>
> SHIFT_PTR(ptr, offset) If an arch defines it then special handling
> of pointer arithmentic may be implemented. Used
> by s/390.
>
>
> (Some of these special percpu arch implementations may be later consolidated
> so that there are less cases to deal with.)
>
> Cc: Rusty Russell <[email protected]>
> Cc: Andi Kleen <[email protected]>
> Signed-off-by: Christoph Lameter <[email protected]>
> Signed-off-by: Mike Travis <[email protected]>
Acked-by: David S. Miller <[email protected]>
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