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authorThomas Gleixner2020-02-07 13:38:51 +0100
committerThomas Gleixner2020-02-17 14:40:21 +0100
commit3280badbe1b289622ce12b94d064ddb624cbaef1 (patch)
tree29f4adf238c94825b8f02d6569a28640df60ee9f
parent1dff4156d1f63b525c54aea7f097a657cbbbf837 (diff)
ARM: vdso: Compile high resolution parts conditionally
If the architected timer is disabled in the kernel configuration then let the core VDSO code drop the high resolution parts at compile time. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Link: https://lkml.kernel.org/r/20200207124402.622587341@linutronix.de
-rw-r--r--arch/arm/include/asm/vdso/gettimeofday.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/include/asm/vdso/gettimeofday.h b/arch/arm/include/asm/vdso/gettimeofday.h
index fe6e1f65932d..f4757d327f43 100644
--- a/arch/arm/include/asm/vdso/gettimeofday.h
+++ b/arch/arm/include/asm/vdso/gettimeofday.h
@@ -106,6 +106,12 @@ static __always_inline int clock_getres32_fallback(
return ret;
}
+static inline bool arm_vdso_hres_capable(void)
+{
+ return IS_ENABLED(CONFIG_ARM_ARCH_TIMER);
+}
+#define __arch_vdso_hres_capable arm_vdso_hres_capable
+
static __always_inline u64 __arch_get_hw_counter(int clock_mode)
{
#ifdef CONFIG_ARM_ARCH_TIMER