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-rw-r--r--include/asm-ppc64/mmzone.h63
1 files changed, 3 insertions, 60 deletions
diff --git a/include/asm-ppc64/mmzone.h b/include/asm-ppc64/mmzone.h
index 7f06afbfbabb..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[];
@@ -30,41 +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[];
35#ifdef CONFIG_MEMORY_HOTPLUG 33#ifdef CONFIG_MEMORY_HOTPLUG
36extern unsigned long max_pfn; 34extern unsigned long max_pfn;
37#endif 35#endif
38 36
39/* 16MB regions */
40#define MEMORY_INCREMENT_SHIFT 24
41#define MEMORY_INCREMENT (1UL << MEMORY_INCREMENT_SHIFT)
42
43/* NUMA debugging, will not work on a DLPAR machine */
44#undef DEBUG_NUMA
45
46static inline int pa_to_nid(unsigned long pa)
47{
48 int nid;
49
50#ifdef CONFIG_MEMORY_HOTPLUG
51 /* kludge hot added sections default to node 0 */
52 if (pa >= (max_pfn << PAGE_SHIFT))
53 return 0;
54#endif
55 nid = numa_memory_lookup_table[pa >> MEMORY_INCREMENT_SHIFT];
56
57#ifdef DEBUG_NUMA
58 /* the physical address passed in is not in the map for the system */
59 if (nid == -1) {
60 printk("bad address: %lx\n", pa);
61 BUG();
62 }
63#endif
64
65 return nid;
66}
67
68/* 37/*
69 * Following are macros that each numa implmentation must define. 38 * Following are macros that each numa implmentation must define.
70 */ 39 */
@@ -72,36 +41,10 @@ static inline int pa_to_nid(unsigned long pa)
72#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) 41#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
73#define node_end_pfn(nid) (NODE_DATA(nid)->node_end_pfn) 42#define node_end_pfn(nid) (NODE_DATA(nid)->node_end_pfn)
74 43
75#ifdef CONFIG_DISCONTIGMEM
76
77#define node_localnr(pfn, nid) ((pfn) - NODE_DATA(nid)->node_start_pfn)
78
79#define pfn_to_nid(pfn) pa_to_nid((unsigned long)(pfn) << PAGE_SHIFT)
80
81/* Written this way to avoid evaluating arguments twice */
82#define discontigmem_pfn_to_page(pfn) \
83({ \
84 unsigned long __tmp = pfn; \
85 (NODE_DATA(pfn_to_nid(__tmp))->node_mem_map + \
86 node_localnr(__tmp, pfn_to_nid(__tmp))); \
87})
88
89#define discontigmem_page_to_pfn(p) \
90({ \
91 struct page *__tmp = p; \
92 (((__tmp) - page_zone(__tmp)->zone_mem_map) + \
93 page_zone(__tmp)->zone_start_pfn); \
94})
95
96/* XXX fix for discontiguous physical memory */
97#define discontigmem_pfn_valid(pfn) ((pfn) < num_physpages)
98
99#endif /* CONFIG_DISCONTIGMEM */
100
101#endif /* CONFIG_NEED_MULTIPLE_NODES */ 44#endif /* CONFIG_NEED_MULTIPLE_NODES */
102 45
103#ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID 46#ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
104#define early_pfn_to_nid(pfn) pa_to_nid(((unsigned long)pfn) << PAGE_SHIFT) 47extern int __init early_pfn_to_nid(unsigned long pfn);
105#endif 48#endif
106 49
107#endif /* _ASM_MMZONE_H_ */ 50#endif /* _ASM_MMZONE_H_ */