diff options
| author |   Marc Zyngier <marc.zyngier@arm.com> | 2011-01-14 15:32:36 +0000 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2012-04-27 13:35:33 +0100 |
| commit | 3f61c80eb7dff0fb35beb8068852d3fc902315a6 (patch) | |
| tree | 33f1285e1bac944b3279993b14cbfc196abf570e /arch/arm/include/asm | |
| parent | ARM: local timers: Add A15 architected timer support (diff) | |
| download | linux-dev-3f61c80eb7dff0fb35beb8068852d3fc902315a6.tar.xz linux-dev-3f61c80eb7dff0fb35beb8068852d3fc902315a6.zip | |
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 <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm/include/asm')
| -rw-r--r-- | arch/arm/include/asm/arch_timer.h | 6 |
1 files changed, 6 insertions, 0 deletions
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 |