From 37ee16ae93a3e4ae7dd51beb81d249f5f12a55c2 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 8 Nov 2005 19:08:05 +0000 Subject: [ARM SMP] Add core ARM support for local timers Add infrastructure for supporting per-cpu local timers to update the profiling information and update system time accounting. Signed-off-by: Russell King --- arch/arm/Kconfig | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'arch/arm/Kconfig') diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 91d5ef3397b..3bfef0934c9 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -356,6 +356,16 @@ config HOTPLUG_CPU Say Y here to experiment with turning CPUs off and on. CPUs can be controlled through /sys/devices/system/cpu. +config LOCAL_TIMERS + bool "Use local timer interrupts" + depends on SMP && n + default y + help + Enable support for local timers on SMP platforms, rather then the + legacy IPI broadcast method. Local timers allows the system + accounting to be spread across the timer interval, preventing a + "thundering herd" at every timer tick. + config PREEMPT bool "Preemptible Kernel (EXPERIMENTAL)" depends on EXPERIMENTAL -- cgit v1.2.3