/* 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;
}
NODE_DATA(nid)->node_spanned_pages)
#ifdef CONFIG_DISCONTIGMEM
-
#define pfn_to_nid(pfn) phys_to_nid((unsigned long)(pfn) << PAGE_SHIFT)
#define kvaddr_to_nid(kaddr) phys_to_nid(__pa(kaddr))
-/* AK: this currently doesn't deal with invalid addresses. We'll see
- if the 2.5 kernel doesn't pass them
- (2.4 used to). */
-#define pfn_to_page(pfn) ({ \
- int nid = phys_to_nid(((unsigned long)(pfn)) << PAGE_SHIFT); \
- ((pfn) - node_start_pfn(nid)) + NODE_DATA(nid)->node_mem_map; \
-})
-
-#define page_to_pfn(page) \
- (long)(((page) - page_zone(page)->zone_mem_map) + page_zone(page)->zone_start_pfn)
-
-#define pfn_valid(pfn) ((pfn) >= num_physpages ? 0 : \
- ({ u8 nid__ = pfn_to_nid(pfn); \
- nid__ != 0xff && (pfn) >= node_start_pfn(nid__) && (pfn) < node_end_pfn(nid__); }))
+extern struct page *pfn_to_page(unsigned long pfn);
+extern unsigned long page_to_pfn(struct page *page);
+extern int pfn_valid(unsigned long pfn);
#endif
#define local_mapnr(kvaddr) \