Re: [PATCH] reduce sizeof(percpu_data) and removes dependanceagainst NR_CPUS

From: Andrew Morton
Date: Fri Jan 06 2006 - 02:26:49 EST


Jan Engelhardt <jengelh@xxxxxxxxxxxxxxx> wrote:
>
>
>
> --- 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.
>

We can. In fact with the gcc-2.95 abandonment I think we can use ptrs[].

But it doesn't matter.
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