ia64/linux-2.6.18-xen.hg

view mm/mmzone.c @ 912:dd42cdb0ab89

[IA64] Build blktap2 driver by default in x86 builds.

add CONFIG_XEN_BLKDEV_TAP2=y to buildconfigs/linux-defconfig_xen_ia64.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
author Isaku Yamahata <yamahata@valinux.co.jp>
date Mon Jun 29 12:09:16 2009 +0900 (2009-06-29)
parents 831230e53067
children
line source
1 /*
2 * linux/mm/mmzone.c
3 *
4 * management codes for pgdats and zones.
5 */
8 #include <linux/stddef.h>
9 #include <linux/mmzone.h>
10 #include <linux/module.h>
12 struct pglist_data *first_online_pgdat(void)
13 {
14 return NODE_DATA(first_online_node);
15 }
17 EXPORT_UNUSED_SYMBOL(first_online_pgdat); /* June 2006 */
19 struct pglist_data *next_online_pgdat(struct pglist_data *pgdat)
20 {
21 int nid = next_online_node(pgdat->node_id);
23 if (nid == MAX_NUMNODES)
24 return NULL;
25 return NODE_DATA(nid);
26 }
27 EXPORT_UNUSED_SYMBOL(next_online_pgdat); /* June 2006 */
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;
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 }
48 EXPORT_UNUSED_SYMBOL(next_zone); /* June 2006 */