On Wed, Apr 08, 2015 at 12:32:01PM +0200, Brice Goglin wrote: > Le 07/04/2015 21:41, Peter Zijlstra a écrit : > > No, that's very much not the same. Even if it were dealing with hotplug > > it would still assume the cpu to return to the same node. > > > > But mostly people do not even bother to handle hotplug. > > > > You said userspace assumes the cpu<->node relation is a boot-time fixed > one, and hotplug breaks this.
I said no such thing. Regular hotplug actually respects that relation. > How do you expect userspace to handle hotplug? Mostly not. Why would they? CPU hotplug is rare and mostly a case of: don't do that then. Its just that some of the virt wankers are using it for resource management which is entirely misguided. Then again, most of virt is. > Is there a convenient way to be notified when a CPU (or memory) > is unplugged? I think you can poll some sysfs file or other. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev