The following line should be added head of commit log on patches 1~4. :) From: Alex Shi <[email protected]>
> Cmpxchg will cause the cacheline bouning when do the value checking, > that cause scalability issue in a large machine (like a 80 core box). > > So a lock pre-read can relief this contention. > > Signed-off-by: Alex Shi <[email protected]> -- Thanks Alex -- 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/
