Re: [PATCH] How to get number of physical CPU in linux from user space?

[Pavel Machek]

>  > +#ifdef CONFIG_SMP
>  > +	seq_printf(m, "physical processor ID\t: %d\n", phys_proc_id[n]);
>  > +	seq_printf(m, "number of siblings\t: %d\n", smp_num_siblings);
>  > +#endif
> 
> Should this be wrapped in a if (cpu_has_ht(c)) { }  ?
> Seems silly to be displaying HT information on non-HT CPUs.

Well, without if () you can tell the difference
between 'no hyperthreading' and 'too old
kernel to tell me about hyperthreading so I'd
suggest kill the if ().
				Pavel