1 /* SPDX-License-Identifier: GPL-2.0-or-later * 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 2
3 #ifndef _LINUX_MMZONE_H 3 #ifndef _LINUX_MMZONE_H
4 #define _LINUX_MMZONE_H 4 #define _LINUX_MMZONE_H
5 5
6 #include <linux/atomic.h> 6 #include <linux/atomic.h>
7 7
8 struct pglist_data *first_online_pgdat(void); 8 struct pglist_data *first_online_pgdat(void);
9 struct pglist_data *next_online_pgdat(struct p 9 struct pglist_data *next_online_pgdat(struct pglist_data *pgdat);
10 10
11 #define for_each_online_pgdat(pgdat) 11 #define for_each_online_pgdat(pgdat) \
12 for (pgdat = first_online_pgdat(); 12 for (pgdat = first_online_pgdat(); \
13 pgdat; 13 pgdat; \
14 pgdat = next_online_pgdat(pgdat)) 14 pgdat = next_online_pgdat(pgdat))
15 15
16 enum zone_type { 16 enum zone_type {
17 __MAX_NR_ZONES 17 __MAX_NR_ZONES
18 }; 18 };
19 19
20 #define MAX_NR_ZONES __MAX_NR_ZONES 20 #define MAX_NR_ZONES __MAX_NR_ZONES
21 #define MAX_PAGE_ORDER 10 21 #define MAX_PAGE_ORDER 10
22 #define MAX_ORDER_NR_PAGES (1 << MAX_PAGE_ORDE 22 #define MAX_ORDER_NR_PAGES (1 << MAX_PAGE_ORDER)
23 23
24 #define pageblock_order MAX_PAGE_ORDER 24 #define pageblock_order MAX_PAGE_ORDER
25 #define pageblock_nr_pages BIT(pageblock_ 25 #define pageblock_nr_pages BIT(pageblock_order)
26 #define pageblock_align(pfn) ALIGN((pfn), p 26 #define pageblock_align(pfn) ALIGN((pfn), pageblock_nr_pages)
27 #define pageblock_start_pfn(pfn) ALIGN_ 27 #define pageblock_start_pfn(pfn) ALIGN_DOWN((pfn), pageblock_nr_pages)
28 28
29 struct zone { 29 struct zone {
30 atomic_long_t managed_pages; 30 atomic_long_t managed_pages;
31 }; 31 };
32 32
33 typedef struct pglist_data { 33 typedef struct pglist_data {
34 struct zone node_zones[MAX_NR_ZONES]; 34 struct zone node_zones[MAX_NR_ZONES];
35 35
36 } pg_data_t; 36 } pg_data_t;
37 37
38 #endif /* _LINUX_MMZONE_H */ 38 #endif /* _LINUX_MMZONE_H */
39 39
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