On Tue, 15 Jul 2014, Paul E. McKenney wrote: > If I understand your initialization procedure correctly, you need at least > an smp_wmb() on the update side and at least an smp_read_barrier_depends() > on the read side.
A barrier for data that is not in the cache of the read side? That has not been accessed yet (well there could have been a free_percpu before but if so then the cache line was evicted by the initialization code). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
