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61 lines
1.2 KiB
61 lines
1.2 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _LINUX_NUMA_H |
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#define _LINUX_NUMA_H |
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#include <linux/types.h> |
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#ifdef CONFIG_NODES_SHIFT |
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#define NODES_SHIFT CONFIG_NODES_SHIFT |
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#else |
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#define NODES_SHIFT 0 |
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#endif |
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#define MAX_NUMNODES (1 << NODES_SHIFT) |
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#define NUMA_NO_NODE (-1) |
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/* optionally keep NUMA memory info available post init */ |
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#ifdef CONFIG_NUMA_KEEP_MEMINFO |
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#define __initdata_or_meminfo |
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#else |
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#define __initdata_or_meminfo __initdata |
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#endif |
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#ifdef CONFIG_NUMA |
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#include <linux/printk.h> |
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#include <asm/sparsemem.h> |
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/* Generic implementation available */ |
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int numa_map_to_online_node(int node); |
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#ifndef memory_add_physaddr_to_nid |
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static inline int memory_add_physaddr_to_nid(u64 start) |
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{ |
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pr_info_once("Unknown online node for memory at 0x%llx, assuming node 0\n", |
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start); |
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return 0; |
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} |
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#endif |
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#ifndef phys_to_target_node |
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static inline int phys_to_target_node(u64 start) |
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{ |
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pr_info_once("Unknown target node for memory at 0x%llx, assuming node 0\n", |
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start); |
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return 0; |
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} |
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#endif |
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#else /* !CONFIG_NUMA */ |
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static inline int numa_map_to_online_node(int node) |
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{ |
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return NUMA_NO_NODE; |
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} |
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static inline int memory_add_physaddr_to_nid(u64 start) |
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{ |
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return 0; |
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} |
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static inline int phys_to_target_node(u64 start) |
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{ |
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return 0; |
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} |
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#endif |
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#endif /* _LINUX_NUMA_H */
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