On Fri, Nov 08, 2013 at 05:17:07PM -0800, Tim Chen wrote: > On Fri, 2013-11-08 at 13:21 -0800, Paul E. McKenney wrote: > > On Mon, Nov 04, 2013 at 12:17:20PM -0500, Waiman Long wrote: > > > There is a pending patch in the rwsem patch series that adds a generic > > > MCS locking helper functions to do MCS-style locking. This patch > > > will enable the queue rwlock to use that generic MCS lock/unlock > > > primitives for internal queuing. This patch should only be merged > > > after the merging of that generic MCS locking patch. > > > > > > Signed-off-by: Waiman Long <Waiman.Long@xxxxxx> > > > > This one does might address at least some of the earlier memory-barrier > > issues, at least assuming that the MCS lock is properly memory-barriered. > > Paul, will appreciate if you can take a look the latest version > of MCS lock with load-acquire and store-release to see if it is now > properly memory-barriered. Don't worry, you cannot escape. It is on my list. ;-) Thanx, Paul -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
