arm64: make Timer Interrupt Frequency selectable

It allows a selectable timer interrupt frequency of 100, 250, 300 and 1000 HZ.
We will get better performance when choose a suitable frequency in some scene.

Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index c62fb0393567d183ecef4ebf09bbf31dbd9835b1..4d8a5b256f659f34e8ba994f79edf46852752f8e 100644 (file)
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -454,10 +454,7 @@ config HOTPLUG_CPU
          can be controlled through /sys/devices/system/cpu.
 
 source kernel/Kconfig.preempt
-
-config HZ
-       int
-       default 100
+source kernel/Kconfig.hz
 
 config ARCH_HAS_HOLES_MEMORYMODEL
        def_bool y if SPARSEMEM