1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * NUMA support for s390
4  *
5  * Define declarations used for communication between NUMA mode
6  * implementations and NUMA core functionality.
7  *
8  * Copyright IBM Corp. 2015
9  */
10 #ifndef __S390_NUMA_MODE_H
11 #define __S390_NUMA_MODE_H
12 
13 struct numa_mode {
14 	char *name;				/* Name of mode */
15 	void (*setup)(void);			/* Initizalize mode */
16 	void (*update_cpu_topology)(void);	/* Called by topology code */
17 	int (*__pfn_to_nid)(unsigned long pfn);	/* PFN to node ID */
18 	unsigned long (*align)(void);		/* Minimum node alignment */
19 	int (*distance)(int a, int b);		/* Distance between two nodes */
20 };
21 
22 extern const struct numa_mode numa_mode_plain;
23 extern const struct numa_mode numa_mode_emu;
24 
25 #endif /* __S390_NUMA_MODE_H */
26