1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_NUMA_H
3 #define _LINUX_NUMA_H
4
5
6 #ifdef CONFIG_NODES_SHIFT
7 #define NODES_SHIFT CONFIG_NODES_SHIFT
8 #else
9 #define NODES_SHIFT 0
10 #endif
11
12 #define MAX_NUMNODES (1 << NODES_SHIFT)
13
14 #define NUMA_NO_NODE (-1)
15
16 static inline bool numa_valid_node(int nid)
17 {
18 return nid >= 0 && nid < MAX_NUMNODES;
19 }
20
21 #endif /* _LINUX_NUMA_H */
22
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