Re: [PATCH] bitops: add _local bitops

[H. Peter Anvin]

On 05/09/2012 09:36 AM, Michael S. Tsirkin wrote:
> 
> Well it talks about a memory barrier, not an
> optimization barrier.
> 

Same thing.

> If compiler reorders code, changes will appear in
> the wrong order on the current processor,
> not just on other processors, no?

Yes.

For your _local I would just copy the atomic bitops but remote the locks
in most cases.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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