[PATCH 2/2 v2] cpu hotplug: add CONFIG_PERMANENT_CPU_TOPOLOGY

The information in /sys/devices/system/cpu/cpuX/topology directory is useful for userspace monitoring applications and in-tree utilities like cpupower & turbostat. When down'ing a thread the /sys/devices/system/cpu/cpuX/topology directory is removed during the CPU_DEAD hotplug callback in the

[PATCH 2/2 v2] cpu hotplug: add CONFIG_PERMANENT_CPU_TOPOLOGY

The information in /sys/devices/system/cpu/cpuX/topology directory is useful for userspace monitoring applications and in-tree utilities like cpupower & turbostat. When down'ing a thread the /sys/devices/system/cpu/cpuX/topology directory is removed during the CPU_DEAD hotplug callback in the