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-rw-r--r--include/asm-ppc64/mmzone.h65
1 files changed, 5 insertions, 60 deletions
diff --git a/include/asm-ppc64/mmzone.h b/include/asm-ppc64/mmzone.h
index 80a708e7093a..54958d6cae04 100644
--- a/include/asm-ppc64/mmzone.h
+++ b/include/asm-ppc64/mmzone.h
@@ -8,15 +8,14 @@
8#define _ASM_MMZONE_H_ 8#define _ASM_MMZONE_H_
9 9
10#include <linux/config.h> 10#include <linux/config.h>
11#include <asm/smp.h>
12 11
13/* generic non-linear memory support: 12/*
13 * generic non-linear memory support:
14 * 14 *
15 * 1) we will not split memory into more chunks than will fit into the 15 * 1) we will not split memory into more chunks than will fit into the
16 * flags field of the struct page 16 * flags field of the struct page
17 */ 17 */
18 18
19
20#ifdef CONFIG_NEED_MULTIPLE_NODES 19#ifdef CONFIG_NEED_MULTIPLE_NODES
21 20
22extern struct pglist_data *node_data[]; 21extern struct pglist_data *node_data[];
@@ -30,36 +29,11 @@ extern struct pglist_data *node_data[];
30 */ 29 */
31 30
32extern int numa_cpu_lookup_table[]; 31extern int numa_cpu_lookup_table[];
33extern char *numa_memory_lookup_table;
34extern cpumask_t numa_cpumask_lookup_table[]; 32extern cpumask_t numa_cpumask_lookup_table[];
35extern int nr_cpus_in_node[]; 33#ifdef CONFIG_MEMORY_HOTPLUG
36 34extern unsigned long max_pfn;
37/* 16MB regions */
38#define MEMORY_INCREMENT_SHIFT 24
39#define MEMORY_INCREMENT (1UL << MEMORY_INCREMENT_SHIFT)
40
41/* NUMA debugging, will not work on a DLPAR machine */
42#undef DEBUG_NUMA
43
44static inline int pa_to_nid(unsigned long pa)
45{
46 int nid;
47
48 nid = numa_memory_lookup_table[pa >> MEMORY_INCREMENT_SHIFT];
49
50#ifdef DEBUG_NUMA
51 /* the physical address passed in is not in the map for the system */
52 if (nid == -1) {
53 printk("bad address: %lx\n", pa);
54 BUG();
55 }
56#endif 35#endif
57 36
58 return nid;
59}
60
61#define node_localnr(pfn, nid) ((pfn) - NODE_DATA(nid)->node_start_pfn)
62
63/* 37/*
64 * Following are macros that each numa implmentation must define. 38 * Following are macros that each numa implmentation must define.
65 */ 39 */
@@ -67,39 +41,10 @@ static inline int pa_to_nid(unsigned long pa)
67#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) 41#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
68#define node_end_pfn(nid) (NODE_DATA(nid)->node_end_pfn) 42#define node_end_pfn(nid) (NODE_DATA(nid)->node_end_pfn)
69 43
70#ifdef CONFIG_DISCONTIGMEM
71
72/*
73 * Given a kernel address, find the home node of the underlying memory.
74 */
75#define kvaddr_to_nid(kaddr) pa_to_nid(__pa(kaddr))
76
77#define pfn_to_nid(pfn) pa_to_nid((unsigned long)(pfn) << PAGE_SHIFT)
78
79/* Written this way to avoid evaluating arguments twice */
80#define discontigmem_pfn_to_page(pfn) \
81({ \
82 unsigned long __tmp = pfn; \
83 (NODE_DATA(pfn_to_nid(__tmp))->node_mem_map + \
84 node_localnr(__tmp, pfn_to_nid(__tmp))); \
85})
86
87#define discontigmem_page_to_pfn(p) \
88({ \
89 struct page *__tmp = p; \
90 (((__tmp) - page_zone(__tmp)->zone_mem_map) + \
91 page_zone(__tmp)->zone_start_pfn); \
92})
93
94/* XXX fix for discontiguous physical memory */
95#define discontigmem_pfn_valid(pfn) ((pfn) < num_physpages)
96
97#endif /* CONFIG_DISCONTIGMEM */
98
99#endif /* CONFIG_NEED_MULTIPLE_NODES */ 44#endif /* CONFIG_NEED_MULTIPLE_NODES */
100 45
101#ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID 46#ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
102#define early_pfn_to_nid(pfn) pa_to_nid(((unsigned long)pfn) << PAGE_SHIFT) 47extern int __init early_pfn_to_nid(unsigned long pfn);
103#endif 48#endif
104 49
105#endif /* _ASM_MMZONE_H_ */ 50#endif /* _ASM_MMZONE_H_ */