Re: Question on atomic_inc/dec

[David S. Miller]

On Tue, 14 Oct 2003 14:44:37 -0700
Tim Hockin <thockin@xxxxxxxxxx> wrote:

> Is there any reason NOT to use the atomic ops in user-space?  I mean, are
> they privileged on some architectures, or ...?

Yes, they are.  Some use interrupt disabling and a spinlock inside
the kernel to implement the atomicity.
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