LXR linux/arch/powerpc/include/asm/mmzone.h

   1/*
   2 * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
   3 *
   4 * PowerPC64 port:
   5 * Copyright (C) 2002 Anton Blanchard, IBM Corp.
   6 */
   7#ifndef _ASM_MMZONE_H_
   8#define _ASM_MMZONE_H_
   9#ifdef __KERNEL__
  10
  11#include <linux/cpumask.h>
  12
  13/*
  14 * generic non-linear memory support:
  15 *
  16 * 1) we will not split memory into more chunks than will fit into the
  17 *    flags field of the struct page
  18 */
  19
  20#ifdef CONFIG_NEED_MULTIPLE_NODES
  21
  22extern struct pglist_data *node_data[];
  23/*
  24 * Return a pointer to the node data for node n.
  25 */
  26#define NODE_DATA(nid)          (node_data[nid])
  27
  28/*
  29 * Following are specific to this numa platform.
  30 */
  31
  32extern int numa_cpu_lookup_table[];
  33extern cpumask_t numa_cpumask_lookup_table[];
  34#ifdef CONFIG_MEMORY_HOTPLUG
  35extern unsigned long max_pfn;
  36#endif
  37
  38/*
  39 * Following are macros that each numa implmentation must define.
  40 */
  41
  42#define node_start_pfn(nid)     (NODE_DATA(nid)->node_start_pfn)
  43#define node_end_pfn(nid)       (NODE_DATA(nid)->node_end_pfn)
  44
  45#endif /* CONFIG_NEED_MULTIPLE_NODES */
  46
  47#endif /* __KERNEL__ */
  48#endif /* _ASM_MMZONE_H_ */
  49