Re: Thread safe circular buffer.

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On Thursday 08 March 2007 10:30, Anupam Kapoor wrote:
> On 3/8/07, Tzahi Fadida <Tzahi.ML2@xxxxxxxxx> wrote:
> > On Wednesday 07 March 2007 20:45, Stuart Macdonald wrote:
> > > If you are on IA32 architecture then memory reads and writes are atomic
> > > provided that they don't cross a cache line.
> >
> > And how do i make sure of that? declare the variable head volatile?
>
> don't use volatile in the kernel. straight from horse's mouth :

I don't understand, LDD3 uses volatile in drivers. Now they say i can't.
What is the alternative?

>
> http://thread.gmane.org/gmane.linux.kernel/423487/focus=424677
>
> anupam

-- 
Regards,
        Tzahi.
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Tzahi Fadida
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