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DateFri, 06 Jan 2006 08:29:38 +0100
FromEric Dumazet <>
SubjectRe: [PATCH] reduce sizeof(percpu_data) and removes dependance against NR_CPUS
Jan Engelhardt a écrit :
> 
> --- linux-2.6.15/include/linux/percpu.h	2006-01-03 04:21:10.000000000 +0100
> +++ linux-2.6.15-edum/include/linux/percpu.h	2006-01-05 14:45:48.000000000 +0100
> @@ -18,8 +18,7 @@
>  #ifdef CONFIG_SMP
> 
>  struct percpu_data {
> -	void *ptrs[NR_CPUS];
> -	void *blkp;
> +	void *ptrs[1]; /* real size depends on highest_possible_processor_id() */
>  };
> 
>  /* 
> 
> 
> I think we can use *ptrs[0] here.
> 

Or even dont change percpu.h, or else some guys will assume percpu_data cost 
nothing...

Eric
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