Re: [PATCH 01/10] x86_64: Cleanup non-smp usage of cpu maps v2

[Mike Travis]

Ingo Molnar wrote:
> * Mike Travis <travis@xxxxxxx> wrote:
> 
>> Cleanup references to the early cpu maps for the non-SMP configuration 
>> and remove some functions called for SMP configurations only.
> 
> thanks, applied.
> 
> one observation:
> 
>> +#ifdef CONFIG_SMP
>>  extern int x86_cpu_to_node_map_init[];
>>  extern void *x86_cpu_to_node_map_early_ptr;
>> +#else
>> +#define x86_cpu_to_node_map_early_ptr NULL
>> +#endif
> 
> Right now all these early_ptrs are in essence open-coded "early 
> per-cpu", right? But shouldnt we solve that in a much cleaner way: by 
> explicitly adding an early-per-cpu types and accessors, and avoid all 
> that #ifdeffery?
> 
> 	Ingo

I was thinking of something similar but had to put it on the back
burner until we got to the point of being able to boot a kernel
with NR_CPUS set to 4096.  It should pop back up on the priority
queue very soon... ;-)

Thanks!
Mike
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/