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-rw-r--r--arch/arm/Kconfig17
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 07ba77c19f6c..c8d94dcd8ef7 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -157,7 +157,7 @@ config ARCH_RPC
config ARCH_SA1100
bool "SA1100-based"
select ISA
- select DISCONTIGMEM
+ select ARCH_DISCONTIGMEM_ENABLE
config ARCH_S3C2410
bool "Samsung S3C2410"
@@ -346,6 +346,21 @@ config PREEMPT
Say Y here if you are building a kernel for a desktop, embedded
or real-time system. Say N if you are unsure.
+config NO_IDLE_HZ
+ bool "Dynamic tick timer"
+ help
+ Select this option if you want to disable continuous timer ticks
+ and have them programmed to occur as required. This option saves
+ power as the system can remain in idle state for longer.
+
+ By default dynamic tick is disabled during the boot, and can be
+ manually enabled with:
+
+ echo 1 > /sys/devices/system/timer/timer0/dyn_tick
+
+ Alternatively, if you want dynamic tick automatically enabled
+ during boot, pass "dyntick=enable" via the kernel command string.
+
config ARCH_DISCONTIGMEM_ENABLE
bool
default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
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