Line data    Source code

       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
      19             : extern void task_numa_fault(int last_node, int node, int pages, int flags);
      20             : extern pid_t task_numa_group_id(struct task_struct *p);
      21             : extern void set_numabalancing_state(bool enabled);
      22             : extern void task_numa_free(struct task_struct *p, bool final);
      23             : extern bool should_numa_migrate_memory(struct task_struct *p, struct page *page,
      24             :                                         int src_nid, int dst_cpu);
      25             : #else
      26             : static inline void task_numa_fault(int last_node, int node, int pages,
      27             :                                    int flags)
      28             : {
      29             : }
      30          56 : static inline pid_t task_numa_group_id(struct task_struct *p)
      31             : {
      32          56 :         return 0;
      33             : }
      34             : static inline void set_numabalancing_state(bool enabled)
      35             : {
      36             : }
      37        1855 : static inline void task_numa_free(struct task_struct *p, bool final)
      38             : {
      39        1855 : }
      40           0 : static inline bool should_numa_migrate_memory(struct task_struct *p,
      41             :                                 struct page *page, int src_nid, int dst_cpu)
      42             : {
      43           0 :         return true;
      44             : }
      45             : #endif
      46             : 
      47             : #endif /* _LINUX_SCHED_NUMA_BALANCING_H */