Re: [patch V2 04/17] ARM: vdso: Compile high resolution parts conditionally

[Vincenzo Frascino]

On 2/7/20 12:38 PM, Thomas Gleixner wrote:
> From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> 
> 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@xxxxxxxxxxxxx>
>

Reviewed-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
Tested-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>

> ---
>  arch/arm/include/asm/vdso/gettimeofday.h |    6 ++++++
>  1 file changed, 6 insertions(+)
> 
> --- 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_getres3
>  	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
> 

-- 
Regards,
Vincenzo