Re: [PATCH] CPU frequency display in /proc/cpuinfo

From: Andi Kleen
Date: Fri Dec 02 2005 - 13:18:50 EST


On Fri, Dec 02, 2005 at 10:13:31AM -0800, Pallipadi, Venkatesh wrote:
> On x86_64:
> There is one single variable cpu_khz that gets written by all the CPUs. So,
> the frequency set by last CPU will be seen on /proc/cpuinfo of all the
> CPUs in the system. What you see also depends on whether you have constant_tsc
> capable CPU or not.

x86-64 part looks good. Thanks.

> /* query the current CPU frequency (in kHz). If zero, cpufreq couldn't detect it */
> unsigned int cpufreq_get(unsigned int cpu);
>
> +/* query the last known CPU freq (in kHz). If zero, cpufreq couldn't detect it */
> +#ifdef CONFIG_CPU_FREQ
> +unsigned int cpufreq_quick_get(unsigned int cpu);
> +#else
> +unsigned int cpufreq_quick_get(unsigned int cpu)
> +{
> + return 0;
> +}
> +#endif

Shouldn't this be a static inline?

-Andi
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