diff options
Diffstat (limited to 'include/asm-ia64')
| -rw-r--r-- | include/asm-ia64/nodedata.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/asm-ia64/nodedata.h b/include/asm-ia64/nodedata.h index a140310bf84..2fb337b0e9b 100644 --- a/include/asm-ia64/nodedata.h +++ b/include/asm-ia64/nodedata.h @@ -46,6 +46,18 @@ struct ia64_node_data { */ #define NODE_DATA(nid) (local_node_data->pg_data_ptrs[nid]) +/* + * LOCAL_DATA_ADDR - This is to calculate the address of other node's + * "local_node_data" at hot-plug phase. The local_node_data + * is pointed by per_cpu_page. Kernel usually use it for + * just executing cpu. However, when new node is hot-added, + * the addresses of local data for other nodes are necessary + * to update all of them. + */ +#define LOCAL_DATA_ADDR(pgdat) \ + ((struct ia64_node_data *)((u64)(pgdat) + \ + L1_CACHE_ALIGN(sizeof(struct pglist_data)))) + #endif /* CONFIG_NUMA */ #endif /* _ASM_IA64_NODEDATA_H */ |