Re: [PATCH 6/7] cputime: Introduce vtime accounting check for readers

Peter Zijlstra
2015-11-19T20:28:40Z

On Thu, Nov 19, 2015 at 04:47:33PM +0100, Frederic Weisbecker wrote:
> +++ b/include/linux/vtime.h
> @@ -17,9 +17,20 @@ static inline bool vtime_accounting_cpu_enabled(void) { return true; }
> #endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
>
> #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
> +/*
> + * Checks if vtime is enabled on some CPU. Cputime readers want to be careful
> + * in that case and compute the tickless cputime.
> + * For now vtime state is tied to context tracking. We might want to decouple
> + * those later if necessary.
> + */
> +static inline bool vtime_accounting_enabled(void)
> +{
> + return context_tracking_is_enabled();
> +}

Should this not also include a definition of this function for
CONFIG_VIRT_CPU_ACCOUNTING_NATIVE and CONFIG_VIRT_CPU_ACCOUNTING ?