tools/testing/memblock/linux/mmzone.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _TOOLS_MMZONE_H
   3 #define _TOOLS_MMZONE_H
   4
   5 #include <linux/atomic.h>
   6 #include <linux/memory_hotplug.h>
   7
   8 struct pglist_data *first_online_pgdat(void);
   9 struct pglist_data *next_online_pgdat(struct pglist_data *pgdat);
  10
  11 #define for_each_online_pgdat(pgdat)                    \
  12         for (pgdat = first_online_pgdat();              \
  13              pgdat;                                     \
  14              pgdat = next_online_pgdat(pgdat))
  15
  16 enum zone_type {
  17         __MAX_NR_ZONES
  18 };
  19
  20 #define MAX_NR_ZONES __MAX_NR_ZONES
  21 #define MAX_PAGE_ORDER 10
  22 #define MAX_ORDER_NR_PAGES (1 << MAX_PAGE_ORDER)
  23
  24 #define pageblock_order         MAX_PAGE_ORDER
  25 #define pageblock_nr_pages      BIT(pageblock_order)
  26 #define pageblock_align(pfn)    ALIGN((pfn), pageblock_nr_pages)
  27 #define pageblock_start_pfn(pfn)        ALIGN_DOWN((pfn), pageblock_nr_pages)
  28
  29 struct zone {
  30         atomic_long_t           managed_pages;
  31 };
  32
  33 typedef struct pglist_data {
  34         struct zone node_zones[MAX_NR_ZONES];
  35
  36 } pg_data_t;
  37
  38 #endif