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mmzone.h
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1 /*
2  * This file is subject to the terms and conditions of the GNU General Public
3  * License. See the file "COPYING" in the main directory of this archive
4  * for more details.
5  *
6  * Copyright (c) 2000,2003 Silicon Graphics, Inc. All rights reserved.
7  * Copyright (c) 2002 NEC Corp.
8  * Copyright (c) 2002 Erich Focht <[email protected]>
9  * Copyright (c) 2002 Kimio Suganuma <[email protected]>
10  */
11 #ifndef _ASM_IA64_MMZONE_H
12 #define _ASM_IA64_MMZONE_H
13 
14 #include <linux/numa.h>
15 #include <asm/page.h>
16 #include <asm/meminit.h>
17 
18 #ifdef CONFIG_NUMA
19 
20 static inline int pfn_to_nid(unsigned long pfn)
21 {
22  extern int paddr_to_nid(unsigned long);
23  int nid = paddr_to_nid(pfn << PAGE_SHIFT);
24  if (nid < 0)
25  return 0;
26  else
27  return nid;
28 }
29 
30 #ifdef CONFIG_IA64_DIG /* DIG systems are small */
31 # define MAX_PHYSNODE_ID 8
32 # define NR_NODE_MEMBLKS (MAX_NUMNODES * 8)
33 #else /* sn2 is the biggest case, so we use that if !DIG */
34 # define MAX_PHYSNODE_ID 2048
35 # define NR_NODE_MEMBLKS (MAX_NUMNODES * 4)
36 #endif
37 
38 #else /* CONFIG_NUMA */
39 # define NR_NODE_MEMBLKS (MAX_NUMNODES * 4)
40 #endif /* CONFIG_NUMA */
41 
42 #endif /* _ASM_IA64_MMZONE_H */