This source file includes following definitions.
- node_add_cache
- node_set_perf_attrs
- link_mem_sections
- register_one_node
- __register_one_node
- register_one_node
- unregister_one_node
- register_cpu_under_node
- unregister_cpu_under_node
- unregister_memory_block_under_nodes
- register_hugetlbfs_with_node
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15 #ifndef _LINUX_NODE_H_
16 #define _LINUX_NODE_H_
17
18 #include <linux/device.h>
19 #include <linux/cpumask.h>
20 #include <linux/list.h>
21 #include <linux/workqueue.h>
22
23
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25
26
27
28
29
30
31 struct node_hmem_attrs {
32 unsigned int read_bandwidth;
33 unsigned int write_bandwidth;
34 unsigned int read_latency;
35 unsigned int write_latency;
36 };
37
38 enum cache_indexing {
39 NODE_CACHE_DIRECT_MAP,
40 NODE_CACHE_INDEXED,
41 NODE_CACHE_OTHER,
42 };
43
44 enum cache_write_policy {
45 NODE_CACHE_WRITE_BACK,
46 NODE_CACHE_WRITE_THROUGH,
47 NODE_CACHE_WRITE_OTHER,
48 };
49
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57
58
59 struct node_cache_attrs {
60 enum cache_indexing indexing;
61 enum cache_write_policy write_policy;
62 u64 size;
63 u16 line_size;
64 u8 level;
65 };
66
67 #ifdef CONFIG_HMEM_REPORTING
68 void node_add_cache(unsigned int nid, struct node_cache_attrs *cache_attrs);
69 void node_set_perf_attrs(unsigned int nid, struct node_hmem_attrs *hmem_attrs,
70 unsigned access);
71 #else
72 static inline void node_add_cache(unsigned int nid,
73 struct node_cache_attrs *cache_attrs)
74 {
75 }
76
77 static inline void node_set_perf_attrs(unsigned int nid,
78 struct node_hmem_attrs *hmem_attrs,
79 unsigned access)
80 {
81 }
82 #endif
83
84 struct node {
85 struct device dev;
86 struct list_head access_list;
87
88 #if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HUGETLBFS)
89 struct work_struct node_work;
90 #endif
91 #ifdef CONFIG_HMEM_REPORTING
92 struct list_head cache_attrs;
93 struct device *cache_dev;
94 #endif
95 };
96
97 struct memory_block;
98 extern struct node *node_devices[];
99 typedef void (*node_registration_func_t)(struct node *);
100
101 #if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_NUMA)
102 extern int link_mem_sections(int nid, unsigned long start_pfn,
103 unsigned long end_pfn);
104 #else
105 static inline int link_mem_sections(int nid, unsigned long start_pfn,
106 unsigned long end_pfn)
107 {
108 return 0;
109 }
110 #endif
111
112 extern void unregister_node(struct node *node);
113 #ifdef CONFIG_NUMA
114
115 extern int __register_one_node(int nid);
116
117
118 static inline int register_one_node(int nid)
119 {
120 int error = 0;
121
122 if (node_online(nid)) {
123 struct pglist_data *pgdat = NODE_DATA(nid);
124 unsigned long start_pfn = pgdat->node_start_pfn;
125 unsigned long end_pfn = start_pfn + pgdat->node_spanned_pages;
126
127 error = __register_one_node(nid);
128 if (error)
129 return error;
130
131 error = link_mem_sections(nid, start_pfn, end_pfn);
132 }
133
134 return error;
135 }
136
137 extern void unregister_one_node(int nid);
138 extern int register_cpu_under_node(unsigned int cpu, unsigned int nid);
139 extern int unregister_cpu_under_node(unsigned int cpu, unsigned int nid);
140 extern void unregister_memory_block_under_nodes(struct memory_block *mem_blk);
141
142 extern int register_memory_node_under_compute_node(unsigned int mem_nid,
143 unsigned int cpu_nid,
144 unsigned access);
145
146 #ifdef CONFIG_HUGETLBFS
147 extern void register_hugetlbfs_with_node(node_registration_func_t doregister,
148 node_registration_func_t unregister);
149 #endif
150 #else
151 static inline int __register_one_node(int nid)
152 {
153 return 0;
154 }
155 static inline int register_one_node(int nid)
156 {
157 return 0;
158 }
159 static inline int unregister_one_node(int nid)
160 {
161 return 0;
162 }
163 static inline int register_cpu_under_node(unsigned int cpu, unsigned int nid)
164 {
165 return 0;
166 }
167 static inline int unregister_cpu_under_node(unsigned int cpu, unsigned int nid)
168 {
169 return 0;
170 }
171 static inline void unregister_memory_block_under_nodes(struct memory_block *mem_blk)
172 {
173 }
174
175 static inline void register_hugetlbfs_with_node(node_registration_func_t reg,
176 node_registration_func_t unreg)
177 {
178 }
179 #endif
180
181 #define to_node(device) container_of(device, struct node, dev)
182
183 #endif