arch/s390/numa/numa_mode.h

   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 */