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 | |