diff options
Diffstat (limited to 'arch/s390/mm')
| -rw-r--r-- | arch/s390/mm/init.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index 05598649b32..388cc742005 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -202,3 +202,22 @@ void free_initrd_mem(unsigned long start, unsigned long end) } } #endif + +#ifdef CONFIG_MEMORY_HOTPLUG +int arch_add_memory(int nid, u64 start, u64 size) +{ + struct pglist_data *pgdat; + struct zone *zone; + int rc; + + pgdat = NODE_DATA(nid); + zone = pgdat->node_zones + ZONE_NORMAL; + rc = vmem_add_mapping(start, size); + if (rc) + return rc; + rc = __add_pages(zone, PFN_DOWN(start), PFN_DOWN(size)); + if (rc) + vmem_remove_mapping(start, size); + return rc; +} +#endif /* CONFIG_MEMORY_HOTPLUG */ |