projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 95144c78 KH |
1 | /* |
| 2 | * linux/mm/mmzone.c | |
| 3 | * | |
| 4 | * management codes for pgdats and zones. | |
| 5 | */ | |
| 6 | ||
| 7 | ||
| 95144c78 KH |
8 | #include <linux/stddef.h> |
| 9 | #include <linux/mmzone.h> | |
| 10 | #include <linux/module.h> | |
| 11 | ||
| 12 | struct pglist_data *first_online_pgdat(void) | |
| 13 | { | |
| 14 | return NODE_DATA(first_online_node); | |
| 15 | } | |
| 16 | ||
| b0d85c5c | 17 | EXPORT_UNUSED_SYMBOL(first_online_pgdat); /* June 2006 */ |
| 95144c78 KH |
18 | |
| 19 | struct pglist_data *next_online_pgdat(struct pglist_data *pgdat) | |
| 20 | { | |
| 21 | int nid = next_online_node(pgdat->node_id); | |
| 22 | ||
| 23 | if (nid == MAX_NUMNODES) | |
| 24 | return NULL; | |
| 25 | return NODE_DATA(nid); | |
| 26 | } | |
| b0d85c5c | 27 | EXPORT_UNUSED_SYMBOL(next_online_pgdat); /* June 2006 */ |
| 95144c78 KH |
28 | |
| 29 | ||
| 30 | /* | |
| 31 | * next_zone - helper magic for for_each_zone() | |
| 32 | */ | |
| 33 | struct zone *next_zone(struct zone *zone) | |
| 34 | { | |
| 35 | pg_data_t *pgdat = zone->zone_pgdat; | |
| 36 | ||
| 37 | if (zone < pgdat->node_zones + MAX_NR_ZONES - 1) | |
| 38 | zone++; | |
| 39 | else { | |
| 40 | pgdat = next_online_pgdat(pgdat); | |
| 41 | if (pgdat) | |
| 42 | zone = pgdat->node_zones; | |
| 43 | else | |
| 44 | zone = NULL; | |
| 45 | } | |
| 46 | return zone; | |
| 47 | } | |
| b0d85c5c | 48 | EXPORT_UNUSED_SYMBOL(next_zone); /* June 2006 */ |
| 95144c78 | 49 |