numa_memblks.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __NUMA_MEMBLKS_H
 3#define __NUMA_MEMBLKS_H
 4
 5#ifdef CONFIG_NUMA_MEMBLKS
 6#include <linux/types.h>
 7
 8#define NR_NODE_MEMBLKS		(MAX_NUMNODES * 2)
 9
10void __init numa_set_distance(int from, int to, int distance);
11void __init numa_reset_distance(void);
12
13struct numa_memblk {
14	u64			start;
15	u64			end;
16	int			nid;
17};
18
19struct numa_meminfo {
20	int			nr_blks;
21	struct numa_memblk	blk[NR_NODE_MEMBLKS];
22};
23
24int __init numa_add_memblk(int nodeid, u64 start, u64 end);
25int __init numa_add_reserved_memblk(int nid, u64 start, u64 end);
26void __init numa_remove_memblk_from(int idx, struct numa_meminfo *mi);
27
28int __init numa_cleanup_meminfo(struct numa_meminfo *mi);
29
30int __init numa_memblks_init(int (*init_func)(void),
31			     bool memblock_force_top_down);
32
33extern int numa_distance_cnt;
34
35#ifdef CONFIG_NUMA_EMU
36extern int emu_nid_to_phys[MAX_NUMNODES];
37int numa_emu_cmdline(char *str);
38void __init numa_emu_update_cpu_to_node(int *emu_nid_to_phys,
39					unsigned int nr_emu_nids);
40u64 __init numa_emu_dma_end(void);
41void __init numa_emulation(struct numa_meminfo *numa_meminfo,
42			   int numa_dist_cnt);
43#else
44static inline void numa_emulation(struct numa_meminfo *numa_meminfo,
45				  int numa_dist_cnt)
46{ }
47static inline int numa_emu_cmdline(char *str)
48{
49	return -EINVAL;
50}
51#endif /* CONFIG_NUMA_EMU */
52
53#ifdef CONFIG_NUMA_KEEP_MEMINFO
54extern int phys_to_target_node(u64 start);
55#define phys_to_target_node phys_to_target_node
56extern int memory_add_physaddr_to_nid(u64 start);
57#define memory_add_physaddr_to_nid memory_add_physaddr_to_nid
58#endif /* CONFIG_NUMA_KEEP_MEMINFO */
59
60#endif /* CONFIG_NUMA_MEMBLKS */
61
62#endif	/* __NUMA_MEMBLKS_H */