From: Rusty Russell <rusty@rustcorp.com.au>

Some places use cpu_online() where they should be using cpu_possible, most
commonly for tallying statistics.  This makes no difference without hotplug
CPU.

Use the for_each_cpu() macro in those places, providing good examples (and
making the external hotplug CPU patch smaller).

Some places use cpu_online() where they should be using cpu_possible, most
commonly for tallying statistics.  This makes no difference without hotplug
CPU.

Use the for_each_cpu() macro in those places, providing good examples (and
making the external hotplug CPU patch smaller).