Hi paul, Please provide the commit link/hash for the changes of smp_read_barrier_depends() in the kernel. I remember that it was post by Akira once on the mailing list, but not sure I can get the right one. Thanks, Yubin -- Yubin Ruan <http://fastdrivers.org> -- To unsubscribe from this list: send the line "unsubscribe perfbook" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html