Re: [v8 PATCH 2/8]: cpuidle: implement a list based approach to register a set of idle routines.

How about something like this..
If the arch does not enable CONFIG_CPU_IDLE, the cpuidle_idle_call
which is called from cpu_idle() should call default_idle without
involving the registering cpuidle steps. This should prevent bloating
up of the kernel for archs which dont want to use cpuidle.

On x86 some people want small kernel too, so selecting it on a architecture
granuality is not good. Also you can make it default, you just need
to slim it down first.

-Andi

-- 
ak@linux.intel.com -- Speaking for myself only.