[mirror_ubuntu-bionic-kernel.git] / include / linux / sched / numa_balancing.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_SCHED_NUMA_BALANCING_H
#define _LINUX_SCHED_NUMA_BALANCING_H

/*
 * This is the interface between the scheduler and the MM that
 * implements memory access pattern based NUMA-balancing:
 */

#include <linux/sched.h>

#define TNF_MIGRATED	0x01
#define TNF_NO_GROUP	0x02
#define TNF_SHARED	0x04
#define TNF_FAULT_LOCAL	0x08
#define TNF_MIGRATE_FAIL 0x10

#ifdef CONFIG_NUMA_BALANCING
extern void task_numa_fault(int last_node, int node, int pages, int flags);
extern pid_t task_numa_group_id(struct task_struct *p);
extern void set_numabalancing_state(bool enabled);
extern void task_numa_free(struct task_struct *p, bool final);
extern bool should_numa_migrate_memory(struct task_struct *p, struct page *page,
					int src_nid, int dst_cpu);
#else
static inline void task_numa_fault(int last_node, int node, int pages,
				   int flags)
{
}
static inline pid_t task_numa_group_id(struct task_struct *p)
{
	return 0;
}
static inline void set_numabalancing_state(bool enabled)
{
}
static inline void task_numa_free(struct task_struct *p, bool final)
{
}
static inline bool should_numa_migrate_memory(struct task_struct *p,
				struct page *page, int src_nid, int dst_cpu)
{
	return true;
}
#endif

#endif /* _LINUX_SCHED_NUMA_BALANCING_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
6a3827d7 IM	2	#ifndef _LINUX_SCHED_NUMA_BALANCING_H
	3	#define _LINUX_SCHED_NUMA_BALANCING_H
	4
5647028d IM	5	/*
	6	* This is the interface between the scheduler and the MM that
	7	* implements memory access pattern based NUMA-balancing:
	8	*/
	9
6a3827d7 IM	10	#include <linux/sched.h>
6a3827d7 IM	11
5647028d IM	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);
30197fa5	22	extern void task_numa_free(struct task_struct *p, bool final);
5647028d IM	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	}
30197fa5	37	static inline void task_numa_free(struct task_struct *p, bool final)
5647028d IM	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
6a3827d7	47	#endif /* _LINUX_SCHED_NUMA_BALANCING_H */