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

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
   4 *
   5 * PowerPC64 port:
   6 * Copyright (C) 2002 Anton Blanchard, IBM Corp.
   7 */
   8#ifndef _ASM_MMZONE_H_
   9#define _ASM_MMZONE_H_
  10#ifdef __KERNEL__
  11
  12#include <linux/cpumask.h>
  13
  14/*
  15 * generic non-linear memory support:
  16 *
  17 * 1) we will not split memory into more chunks than will fit into the
  18 *    flags field of the struct page
  19 */
  20
  21#ifdef CONFIG_NUMA
  22
  23extern struct pglist_data *node_data[];
  24/*
  25 * Return a pointer to the node data for node n.
  26 */
  27#define NODE_DATA(nid)          (node_data[nid])
  28
  29/*
  30 * Following are specific to this numa platform.
  31 */
  32
  33extern int numa_cpu_lookup_table[];
  34extern cpumask_var_t node_to_cpumask_map[];
  35#ifdef CONFIG_MEMORY_HOTPLUG
  36extern unsigned long max_pfn;
  37u64 memory_hotplug_max(void);
  38#else
  39#define memory_hotplug_max() memblock_end_of_DRAM()
  40#endif
  41
  42#else
  43#define memory_hotplug_max() memblock_end_of_DRAM()
  44#endif /* CONFIG_NUMA */
  45#ifdef CONFIG_FA_DUMP
  46#define __HAVE_ARCH_RESERVED_KERNEL_PAGES
  47#endif
  48
  49#ifdef CONFIG_MEMORY_HOTPLUG
  50extern int create_section_mapping(unsigned long start, unsigned long end,
  51                                  int nid, pgprot_t prot);
  52#endif
  53
  54#endif /* __KERNEL__ */
  55#endif /* _ASM_MMZONE_H_ */
  56