Re: [PATCH -tip] x86: cpu/intel_cacheinfo.c fix compilation warnings

[Jaswinder Singh Rajput <jaswinder@kernel.org>]

On Tue, 2009-04-14 at 15:32 +0200, Ingo Molnar wrote:
> * Jaswinder Singh Rajput <jaswinder@kernel.org> wrote:
> 
> > fix:
> >   arch/x86/kernel/cpu/intel_cacheinfo.c: In function ‘show_cache_disable’:
> >   arch/x86/kernel/cpu/intel_cacheinfo.c:712: warning: unused variable ‘node’
> >   arch/x86/kernel/cpu/intel_cacheinfo.c: In function ‘store_cache_disable’:
> >   arch/x86/kernel/cpu/intel_cacheinfo.c:739: warning: unused variable ‘node’
> 
> you again 'fixed' a warning.
> 
> this made you fail to analyze and miss the real reason for this for 
> example:
> 
> >   arch/x86/kernel/cpu/intel_cacheinfo.c:739: warning: unused variable ‘node’
> 
> > -	int node = cpu_to_node(cpu);
> 
> the local variable is clearly initialized.
> 
> The problem is not with that variable - the problem is most likely 
> with the cpu_to_node() macro not creating a reference to the 'cpu' 
> variable in a compiler-visible way, in the !NUMA case.
> 
> The typical way to solve this is to add a dummy:
> 
> 	(void)(cpu)
> 
> use to the 'cpu' parameter to the macro definition - or, (which is a 
> much better solution), to convert it to an inline function.
> 

OK send patch:
[PATCH -tip] x86: k8.h reference to node in node_to_k8_nb_misc for !CONFIG_K8_NB

Thanks,

--
JSR