mmzone.h 1.2 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455
  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. /*
  3. * Written by Kanoj Sarcar ([email protected]) 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. #include <linux/cpumask.h>
  12. /*
  13. * generic non-linear memory support:
  14. *
  15. * 1) we will not split memory into more chunks than will fit into the
  16. * flags field of the struct page
  17. */
  18. #ifdef CONFIG_NUMA
  19. extern struct pglist_data *node_data[];
  20. /*
  21. * Return a pointer to the node data for node n.
  22. */
  23. #define NODE_DATA(nid) (node_data[nid])
  24. /*
  25. * Following are specific to this numa platform.
  26. */
  27. extern int numa_cpu_lookup_table[];
  28. extern cpumask_var_t node_to_cpumask_map[];
  29. #ifdef CONFIG_MEMORY_HOTPLUG
  30. extern unsigned long max_pfn;
  31. u64 memory_hotplug_max(void);
  32. #else
  33. #define memory_hotplug_max() memblock_end_of_DRAM()
  34. #endif
  35. #else
  36. #define memory_hotplug_max() memblock_end_of_DRAM()
  37. #endif /* CONFIG_NUMA */
  38. #ifdef CONFIG_FA_DUMP
  39. #define __HAVE_ARCH_RESERVED_KERNEL_PAGES
  40. #endif
  41. #ifdef CONFIG_MEMORY_HOTPLUG
  42. extern int create_section_mapping(unsigned long start, unsigned long end,
  43. int nid, pgprot_t prot);
  44. #endif
  45. #endif /* __KERNEL__ */
  46. #endif /* _ASM_MMZONE_H_ */