1be7d9935b
This patch introduces the conditional changes required for the three memory models. With [patch 1/4] there are three memory models; FLATMEM, DISCONTIG and SPARSEMEM. Also a new arch include file sparemem.h is introduced for defining SPARSEMEM parameters. Signed-off-by: Bob Picco <bob.picco@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (c) 2000,2003 Silicon Graphics, Inc. All rights reserved.
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* Copyright (c) 2002 NEC Corp.
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* Copyright (c) 2002 Erich Focht <efocht@ess.nec.de>
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* Copyright (c) 2002 Kimio Suganuma <k-suganuma@da.jp.nec.com>
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*/
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#ifndef _ASM_IA64_MMZONE_H
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#define _ASM_IA64_MMZONE_H
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#include <linux/numa.h>
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#include <asm/page.h>
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#include <asm/meminit.h>
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#ifdef CONFIG_NUMA
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static inline int pfn_to_nid(unsigned long pfn)
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{
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#ifdef CONFIG_NUMA
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extern int paddr_to_nid(unsigned long);
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int nid = paddr_to_nid(pfn << PAGE_SHIFT);
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if (nid < 0)
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return 0;
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else
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return nid;
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#else
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return 0;
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#endif
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}
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#ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
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extern int early_pfn_to_nid(unsigned long pfn);
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#endif
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#ifdef CONFIG_IA64_DIG /* DIG systems are small */
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# define MAX_PHYSNODE_ID 8
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# define NR_NODE_MEMBLKS (MAX_NUMNODES * 8)
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#else /* sn2 is the biggest case, so we use that if !DIG */
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# define MAX_PHYSNODE_ID 2048
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# define NR_NODE_MEMBLKS (MAX_NUMNODES * 4)
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#endif
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#else /* CONFIG_NUMA */
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# define NR_NODE_MEMBLKS (MAX_NUMNODES * 4)
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#endif /* CONFIG_NUMA */
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#endif /* _ASM_IA64_MMZONE_H */
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