1 files changed, 56 insertions, 0 deletions

diff --git a/include/asm-x86/mmzone_64.h b/include/asm-x86/mmzone_64.h
new file mode 100644
index 000000000000..19a89377b123
--- /dev/null
+++ b/include/asm-x86/mmzone_64.h
@@ -0,0 +1,56 @@
+/* K8 NUMA support */
+/* Copyright 2002,2003 by Andi Kleen, SuSE Labs */
+/* 2.5 Version loosely based on the NUMAQ Code by Pat Gaughen. */
+#ifndef _ASM_X86_64_MMZONE_H
+#define _ASM_X86_64_MMZONE_H 1
+
+
+#ifdef CONFIG_NUMA
+
+#define VIRTUAL_BUG_ON(x) 
+
+#include <asm/smp.h>
+
+/* Simple perfect hash to map physical addresses to node numbers */
+struct memnode {
+        int shift;
+        unsigned int mapsize;
+        u8 *map;
+        u8 embedded_map[64-16];
+} ____cacheline_aligned; /* total size = 64 bytes */
+extern struct memnode memnode;
+#define memnode_shift memnode.shift
+#define memnodemap memnode.map
+#define memnodemapsize memnode.mapsize
+
+extern struct pglist_data *node_data[];
+
+static inline __attribute__((pure)) int phys_to_nid(unsigned long addr) 
+{ 
+        unsigned nid; 
+        VIRTUAL_BUG_ON(!memnodemap);
+        VIRTUAL_BUG_ON((addr >> memnode_shift) >= memnodemapsize);
+        nid = memnodemap[addr >> memnode_shift]; 
+        VIRTUAL_BUG_ON(nid >= MAX_NUMNODES || !node_data[nid]); 
+        return nid; 
+} 
+
+#define NODE_DATA(nid)          (node_data[nid])
+
+#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)
+
+#ifdef CONFIG_DISCONTIGMEM
+#define pfn_to_nid(pfn) phys_to_nid((unsigned long)(pfn) << PAGE_SHIFT)
+
+extern int pfn_valid(unsigned long pfn);
+#endif
+
+#ifdef CONFIG_NUMA_EMU
+#define FAKE_NODE_MIN_SIZE      (64*1024*1024)
+#define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1uL))
+#endif
+
+#endif
+#endif