Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / include / asm-x86_64 / mmzone.h

diff --git a/include/asm-x86_64/mmzone.h b/include/asm-x86_64/mmzone.h
index d95b7c2..6944e71 100644 (file)
--- a/include/asm-x86_64/mmzone.h
+++ b/include/asm-x86_64/mmzone.h
@@ -6,58 +6,47 @@
 
 #include <linux/config.h>
 
-#ifdef CONFIG_DISCONTIGMEM
+#ifdef CONFIG_NUMA
 
 #define VIRTUAL_BUG_ON(x) 
 
 #include <asm/smp.h>
 
-#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);              \
-})
+#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))
 
-#define page_to_pfn(page) \
-       (long)(((page) - page_zone(page)->zone_mem_map) + page_zone(page)->zone_start_pfn)
+extern int pfn_valid(unsigned long pfn);
+#endif
 
-#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__); }))
 #endif
 #endif