From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- arch/ia64/include/asm/nodedata.h | 63 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 arch/ia64/include/asm/nodedata.h (limited to 'arch/ia64/include/asm/nodedata.h') diff --git a/arch/ia64/include/asm/nodedata.h b/arch/ia64/include/asm/nodedata.h new file mode 100644 index 000000000..2fb337b0e --- /dev/null +++ b/arch/ia64/include/asm/nodedata.h @@ -0,0 +1,63 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (c) 2000 Silicon Graphics, Inc. All rights reserved. + * Copyright (c) 2002 NEC Corp. + * Copyright (c) 2002 Erich Focht + * Copyright (c) 2002 Kimio Suganuma + */ +#ifndef _ASM_IA64_NODEDATA_H +#define _ASM_IA64_NODEDATA_H + +#include + +#include +#include + +#ifdef CONFIG_NUMA + +/* + * Node Data. One of these structures is located on each node of a NUMA system. + */ + +struct pglist_data; +struct ia64_node_data { + short active_cpu_count; + short node; + struct pglist_data *pg_data_ptrs[MAX_NUMNODES]; +}; + + +/* + * Return a pointer to the node_data structure for the executing cpu. + */ +#define local_node_data (local_cpu_data->node_data) + +/* + * Given a node id, return a pointer to the pg_data_t for the node. + * + * NODE_DATA - should be used in all code not related to system + * initialization. It uses pernode data structures to minimize + * offnode memory references. However, these structure are not + * present during boot. This macro can be used once cpu_init + * completes. + */ +#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 */ -- cgit v1.2.3-54-g00ecf