On Fri, 2005-04-08 at 12:59 +1000, Herbert Xu wrote: > Evgeniy Polyakov <[email protected]> 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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