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 static inline pid_t task_numa_group_id(struct task_struct *p) 31 { 32 return 0; 33 } 34 static inline void set_numabalancing_state(bool enabled) 35 { 36 } 37 static inline void task_numa_free(struct task_struct *p, bool final) 38 { 39 } 40 static 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