Re: [Fwd: Re: connector is missing in 2.6.12-rc2-mm1]

[Evgeniy Polyakov]

On Fri, 2005-04-08 at 12:59 +1000, Herbert Xu wrote:
> Evgeniy Polyakov <johnpol@xxxxxxxxxxx> wrote:
> >
> > atomic_dec_and_test() is more expensive than 2 barriers + atomic_dec(),
> > but in case of connector I think the price is not so high.
> 
> Can you list the platforms on which this is true?

sparc64, some mips [at least in UP].
I do not know about others, but I think that any
arch, where atomic operations are serialized,
has sync/isync in atomic_dec_and_test()
and does not for atomic_dec().

> Thanks,
-- 
        Evgeniy Polyakov

Crash is better than data corruption -- Arthur Grabowski

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