diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-02-07 13:38:51 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-02-17 14:40:21 +0100 |
| commit | 3280badbe1b289622ce12b94d064ddb624cbaef1 (patch) | |
| tree | 29f4adf238c94825b8f02d6569a28640df60ee9f | |
| parent | lib/vdso: Allow the high resolution parts to be compiled out (diff) | |
| download | linux-3280badbe1b289622ce12b94d064ddb624cbaef1.tar.xz linux-3280badbe1b289622ce12b94d064ddb624cbaef1.zip | |
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.h | 6 |
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 |