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authorRalf Baechle <ralf@linux-mips.org>2009-06-23 10:00:31 +0100
committerRalf Baechle <ralf@linux-mips.org>2009-06-24 18:34:40 +0100
commit1b2bc75c1bde6581d2694cb3ed7fb06b69685008 (patch)
tree800fc23052bccb1fbf8acfbaabbf5648c69daa9e /arch/mips/Kconfig
parent4ac4aa5cc3b00cc558575065ae71043e92d1a69a (diff)
MIPS: Add arch generic CPU hotplug
Each platform has to add support for CPU hotplugging itself by providing suitable definitions for the cpu_disable and cpu_die of the smp_ops methods and setting SYS_SUPPORTS_HOTPLUG_CPU. A platform should only set SYS_SUPPORTS_HOTPLUG_CPU once all it's smp_ops definitions have the necessary changes. This patch contains the changes to the dummy smp_ops definition for uni-processor systems. Parts of the code contributed by Cavium Inc. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/Kconfig')
-rw-r--r--arch/mips/Kconfig11
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index b29f0280d71..eb7e8d795c6 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -784,8 +784,17 @@ config SYS_HAS_EARLY_PRINTK
bool
config HOTPLUG_CPU
+ bool "Support for hot-pluggable CPUs"
+ depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
+ help
+ Say Y here to allow turning CPUs off and on. CPUs can be
+ controlled through /sys/devices/system/cpu.
+ (Note: power management support will enable this option
+ automatically on SMP systems. )
+ Say N if you want to disable CPU hotplug.
+
+config SYS_SUPPORTS_HOTPLUG_CPU
bool
- default n
config I8259
bool