[LTP] NUMA system and get_a_numa_node()

[Han Pingtian <hanpt@linux.vnet.ibm.com>]

Hey there,

We have a system which only has one NUMA node. When trying to run ksm02
on it, becase the code calling get_allowed_nodes() with a count 2 as
below:

 972 /* Warning: *DO NOT* use this function in child */
 973 unsigned int get_a_numa_node(void (*cleanup_fn) (void))
 974 {              
 975         unsigned int nd1, nd2;
 976         int ret; 
 977                        
 978         ret = get_allowed_nodes(0, 2, &nd1, &nd2);
 979         switch (ret) { 
 980         case 0:
 981                 break;
 982         case -3:
 983                 tst_brkm(TCONF, cleanup_fn, "requires a NUMA system.");

it always failed with "requires a NUMA system.".

I think a NUMA system may have only one node, right? If so, could we
change the count to 1?

Thanks in advance!


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