csky: CPU-hotplug supported for SMP
authorGuo Ren <ren_guo@c-sky.com>
Wed, 19 Dec 2018 11:56:14 +0000 (19:56 +0800)
committerGuo Ren <ren_guo@c-sky.com>
Mon, 31 Dec 2018 15:03:53 +0000 (23:03 +0800)
commit859e5f45cbb33fe5d591a8e429667f0b7d4f4be8
treec3cd065d0ac34d9bc09af2a53d3cf64695329c89
parent1d95fe4d3de42e915bc22d5fd6cd4de103c5e517
csky: CPU-hotplug supported for SMP

This is a simple implement of CPU-hotplug for power saving. CPU use
wait instruction to enter power saving mode and waiting for IPI wakeup
signal.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
arch/csky/Kconfig
arch/csky/include/asm/smp.h
arch/csky/kernel/smp.c