[PATCH] x86_64: Fix NUMA node lookup debug code which had bitrotted

/* Simple perfect hash to map physical addresses to node numbers */

extern int memnode_shift; 

extern u8  memnodemap[NODEMAPSIZE]; 

extern int maxnode;

extern struct pglist_data *node_data[];

static inline __attribute__((pure)) int phys_to_nid(unsigned long addr) 

{ 

	int nid; 

	unsigned nid; 

	VIRTUAL_BUG_ON((addr >> memnode_shift) >= NODEMAPSIZE);

	nid = memnodemap[addr >> memnode_shift]; 

	VIRTUAL_BUG_ON(nid > maxnode); 

	VIRTUAL_BUG_ON(nid >= MAX_NUMNODES || !node_data[nid]); 

	return nid; 

}