Re: [PATCH] x86: Replace uses of current_cpu_data with this_cpuops

[Christoph Lameter]

On Wed, 8 Dec 2010, Eric Dumazet wrote:

> > In the long run, it might be a good idea to remove cpu_data() macro
> > too and use per_cpu macro directly.
> >
>
> or introduce this_cpu_has() to remove the adress computation
>
> -	if (cpu_has(__this_cpu_ptr(&cpu_info), X86_FEATURE_ARAT)) {
>
> +	if (this_cpu_has(X86_FEATURE_ARAT)) {
>

The fundamental problem is that bitops require memory addresses which does
not work with per cpu ops.

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