LXR linux/include/linux/sched/numa

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _LINUX_SCHED_NUMA_BALANCING_H
   3#define _LINUX_SCHED_NUMA_BALANCING_H
   4
   5/*
   6 * This is the interface between the scheduler and the MM that
   7 * implements memory access pattern based NUMA-balancing:
   8 */
   9
  10#include <linux/sched.h>
  11
  12#define TNF_MIGRATED    0x01
  13#define TNF_NO_GROUP    0x02
  14#define TNF_SHARED      0x04
  15#define TNF_FAULT_LOCAL 0x08
  16#define TNF_MIGRATE_FAIL 0x10
  17
  18#ifdef CONFIG_NUMA_BALANCING
  19extern void task_numa_fault(int last_node, int node, int pages, int flags);
  20extern pid_t task_numa_group_id(struct task_struct *p);
  21extern void set_numabalancing_state(bool enabled);
  22extern void task_numa_free(struct task_struct *p, bool final);
  23extern bool should_numa_migrate_memory(struct task_struct *p, struct page *page,
  24                                        int src_nid, int dst_cpu);
  25#else
  26static inline void task_numa_fault(int last_node, int node, int pages,
  27                                   int flags)
  28{
  29}
  30static inline pid_t task_numa_group_id(struct task_struct *p)
  31{
  32        return 0;
  33}
  34static inline void set_numabalancing_state(bool enabled)
  35{
  36}
  37static inline void task_numa_free(struct task_struct *p, bool final)
  38{
  39}
  40static inline bool should_numa_migrate_memory(struct task_struct *p,
  41                                struct page *page, int src_nid, int dst_cpu)
  42{
  43        return true;
  44}
  45#endif
  46
  47#endif /* _LINUX_SCHED_NUMA_BALANCING_H */
  48