diff options
| author | Guo Ren <ren_guo@c-sky.com> | 2018-12-19 19:56:14 +0800 |
|---|---|---|
| committer | Guo Ren <ren_guo@c-sky.com> | 2018-12-31 23:03:53 +0800 |
| commit | 859e5f45cbb33fe5d591a8e429667f0b7d4f4be8 (patch) | |
| tree | c3cd065d0ac34d9bc09af2a53d3cf64695329c89 /arch/csky/Kconfig | |
| parent | 1d95fe4d3de42e915bc22d5fd6cd4de103c5e517 (diff) | |
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>
Diffstat (limited to 'arch/csky/Kconfig')
| -rw-r--r-- | arch/csky/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig index cb64f8dacd08..8bdbe9219662 100644 --- a/arch/csky/Kconfig +++ b/arch/csky/Kconfig @@ -198,6 +198,15 @@ config RAM_BASE hex "DRAM start addr (the same with memory-section in dts)" default 0x0 +config HOTPLUG_CPU + bool "Support for hot-pluggable CPUs" + select GENERIC_IRQ_MIGRATION + depends on SMP + help + Say Y here to allow turning CPUs off and on. CPUs can be + controlled through /sys/devices/system/cpu/cpu1/hotplug/target. + + Say N if you want to disable CPU hotplug. endmenu source "kernel/Kconfig.hz" |