X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-x86_64%2Fmmzone.h;h=6944e7122df5194c767217444a993a90db3d6ede;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=53c62171a7c2c5f262315523388fe865685c2331;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/include/asm-x86_64/mmzone.h b/include/asm-x86_64/mmzone.h
index 53c62171a..6944e7122 100644
--- a/include/asm-x86_64/mmzone.h
+++ b/include/asm-x86_64/mmzone.h
@@ -6,60 +6,47 @@
 
 #include <linux/config.h>
 
-#ifdef CONFIG_DISCONTIGMEM
+#ifdef CONFIG_NUMA
 
 #define VIRTUAL_BUG_ON(x) 
 
 #include <asm/smp.h>
 
-#define MAXNODE 8 
-#define NODEMAPSIZE 0xff
+/* Should really switch to dynamic allocation at some point */
+#define NODEMAPSIZE 0x4fff
 
 /* Simple perfect hash to map physical addresses to node numbers */
-extern int memnode_shift; 
-extern u8  memnodemap[NODEMAPSIZE]; 
-extern int maxnode;
+struct memnode {
+	int shift;
+	u8 map[NODEMAPSIZE];
+} ____cacheline_aligned;
+extern struct memnode memnode;
+#define memnode_shift memnode.shift
+#define memnodemap memnode.map
 
 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; 
 } 
 
-#define pfn_to_nid(pfn) phys_to_nid((unsigned long)(pfn) << PAGE_SHIFT)
-
-#define kvaddr_to_nid(kaddr)	phys_to_nid(__pa(kaddr))
 #define NODE_DATA(nid)		(node_data[nid])
 
-#define node_mem_map(nid)	(NODE_DATA(nid)->node_mem_map)
-
-#define node_mem_map(nid)	(NODE_DATA(nid)->node_mem_map)
 #define node_start_pfn(nid)	(NODE_DATA(nid)->node_start_pfn)
 #define node_end_pfn(nid)       (NODE_DATA(nid)->node_start_pfn + \
 				 NODE_DATA(nid)->node_spanned_pages)
 
-#define local_mapnr(kvaddr) \
-	( (__pa(kvaddr) >> PAGE_SHIFT) - node_start_pfn(kvaddr_to_nid(kvaddr)) )
-
-/* 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_mem_map(nid);		\
-})
-
-#define page_to_pfn(page) \
-	(long)(((page) - page_zone(page)->zone_mem_map) + page_zone(page)->zone_start_pfn)
-
-/* AK: !DISCONTIGMEM just forces it to 1. Can't we too? */
-#define pfn_valid(pfn)          ((pfn) < num_physpages)
+#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))
 
+extern int pfn_valid(unsigned long pfn);
+#endif
 
 #endif
 #endif