On Tue, May 12, 2015 at 02:18:41PM -0700, Paul E. McKenney wrote: > From: "Paul E. McKenney" <[email protected]> > > Because mce is arch-specific x86 code, there is little or no > performance benefit of using rcu_dereference_index_check() over using > smp_load_acquire(). It also turns out that mce is the only place that > array-index-based RCU is used, and it would be convenient to drop > this portion of the RCU API. > > This patch therefore changes rcu_dereference_index_check() uses to > smp_load_acquire(), but keeping the lockdep diagnostics, and also > changes rcu_access_index() uses to READ_ONCE(). > > Signed-off-by: Paul E. McKenney <[email protected]> > Cc: [email protected] > Cc: Tony Luck <[email protected]> > Cc: Borislav Petkov <[email protected]>
Looks good to me. If it is easier for you carrying it in your tree: Acked-by: Borislav Petkov <[email protected]> Otherwise, let me know. Thanks. -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply. -- -- 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/
