Re: [PATCH 0/4] x86_64: Optimize percpu accesses

[Jeremy Fitzhardinge]

Mike Travis wrote:
> Yes, you're right, I wrote that quickly without really reading it back.
> My point is that now that x86_read_percpu() and x86_write_percpu() do
> evaluate to a single instruction (by definition atomic), then it doesn't
> need to be surrounded by the preempt_disable()/preempt_enable() calls.
>   

Yep, correct.

> It appears as if I'm implying that's the case for get/put_cpu_var().
>   

Right.

   J
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