Re: [PATCH] libnuma: disable caching of node cpusmasks

> @@ -1329,25 +1321,12 @@ numa_node_to_cpus_v2(int node, struct bitmask *buffer)
>  	size_t len = 0; 
>  	struct bitmask *mask;
>  
> -	if (!node_cpu_mask_v2)
> -		init_node_cpu_mask_v2();
> -
>  	if (node > nnodes) {
>  		errno = ERANGE;
>  		return -1;
>  	}
>  	numa_bitmask_clearall(buffer);
>  
> -	if (node_cpu_mask_v2[node]) {

I was playing around with info (http://fbinfer.com/) earlier, and ran it over
numactl, and it complained about exactly this line: it can reference NULL
when the memory allocation above fails. So it's good to remove it.

Would be good to see how much performance difference it makes though.
Do you have any data? If it's significant may need to do a time out
or similar.

-Andi