On Thu, May 13, 2010 at 08:14:57PM +0800, Shaohui Zheng wrote: > hotplug emulator: support cpu probe/release in x86 > > Add cpu interface probe/release under sysfs for x86. User can use this > interface to emulate the cpu hot-add process, it is for cpu hotplug > test purpose. Add a kernel option CONFIG_ARCH_CPU_PROBE_RELEASE for this > feature. > > This interface provides a mechanism to emulate cpu hotplug with software > methods, it becomes possible to do cpu hotplug automation and stress > testing. > At a quick glance, is this really necessary? It seems like you could easily replace most of this with a CPU notifier chain that takes care of the node handling. See for example how ppc64 manages the CPU hotplug/numa emulation case in arch/powerpc/mm/numa.c. arch_register_cpu() just looks like some topology hack for ACPI, it would be nice not to perpetuate that too much. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>