On Mon, Sep 14, 2015 at 03:37:32PM -0400, Waiman Long wrote: > BTW, the queue head vCPU at pv_wait_head_and_lock() doesn't wait early, it > will spin the full threshold as there is no way for it to figure out if the > lock holder is running or not.
We can know its cpu id, right? Surely we should then be able to figure out if its active or not, I'm thinking the KVM/Xen know these things somewhere. -- 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/
