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| author | Mark Rutland <mark.rutland@arm.com> | 2013-10-24 20:30:18 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2013-10-25 11:33:21 +0100 |
| commit | 9327e2c6bb8cb0131b38a07847cd58c78dc095e9 (patch) | |
| tree | a326739547f5521d1c1b2d228081f52466609e6c /arch/arm64/Kconfig | |
| parent | e8765b265a69c83504afc6901d6e137b1811d1f0 (diff) | |
| download | blackbird-op-linux-9327e2c6bb8cb0131b38a07847cd58c78dc095e9.tar.gz blackbird-op-linux-9327e2c6bb8cb0131b38a07847cd58c78dc095e9.zip | |
arm64: add CPU_HOTPLUG infrastructure
This patch adds the basic infrastructure necessary to support
CPU_HOTPLUG on arm64, based on the arm implementation. Actual hotplug
support will depend on an implementation's cpu_operations (e.g. PSCI).
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 9e8233b3f188..86ebfe499d6a 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -161,6 +161,13 @@ config NR_CPUS default "8" if ARCH_XGENE default "4" +config HOTPLUG_CPU + bool "Support for hot-pluggable CPUs" + depends on SMP + help + Say Y here to experiment with turning CPUs off and on. CPUs + can be controlled through /sys/devices/system/cpu. + source kernel/Kconfig.preempt config HZ |
