On Thu, Feb 10, 2005 at 01:23:04AM -0300, Werner Almesberger wrote: > > What happens if the operation could return a value, but the user > ignores it ? E.g. if I don't like smp_mb__*, could I just use > > atomic_inc_and_test(foo); > > instead of > > smp_mb__before_atomic_inc(); > atomic_inc(foo); > smp_mb__after_atomic_dec();
Yes you can. > ? If yes, is this a good idea ? Dave mentioned that on sparc64, atomic_inc_and_test is much more expensive than the second variant. Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <[EMAIL PROTECTED]> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
