From 3f61c80eb7dff0fb35beb8068852d3fc902315a6 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Fri, 14 Jan 2011 15:32:36 +0000 Subject: ARM: architected timers: Add A15 specific sched_clock implementation Provide an A15 sched_clock implementation using the virtual counter, which is thought to be more useful than the physical one in a virtualised environment, as it can offset the time spent in another VM or the hypervisor. Acked-by: Catalin Marinas Signed-off-by: Marc Zyngier --- arch/arm/include/asm/arch_timer.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch/arm/include') diff --git a/arch/arm/include/asm/arch_timer.h b/arch/arm/include/asm/arch_timer.h index 827305d77b3e..dc008c696b5a 100644 --- a/arch/arm/include/asm/arch_timer.h +++ b/arch/arm/include/asm/arch_timer.h @@ -9,11 +9,17 @@ struct arch_timer { #ifdef CONFIG_ARM_ARCH_TIMER int arch_timer_register(struct arch_timer *); +int arch_timer_sched_clock_init(void); #else static inline int arch_timer_register(struct arch_timer *at) { return -ENXIO; } + +static inline int arch_timer_sched_clock_init(void) +{ + return -ENXIO; +} #endif #endif -- cgit v1.2.3-58-ga151