On Thu, Dec 04, 2014 at 02:08:50PM +0100, Hannes Frederic Sowa wrote: > By default the arch_fast_hash hashing function pointers are initialized > to jhash(2). If during boot-up a CPU with SSE4.2 is detected they get > updated to the CRC32 ones. This dispatching scheme incurs a function > pointer lookup and indirect call for every hashing operation.
Just curious, is jhash actually faster than generic C CRC32 on common platforms? Cheers, -- Email: Herbert Xu <[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/
