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Commit 5647028d authored by Ingo Molnar's avatar Ingo Molnar
Browse files

sched/headers: Move the NUMA balancing interfaces from <linux/sched.h> to... 


sched/headers: Move the NUMA balancing interfaces from <linux/sched.h> to <linux/sched/numa_balancing.h>

Split out the interface between the scheduler and the MM which
deals with page fault driven NUMA balancing, into the new
<linux/sched/numa_balancing.h> header.

Acked-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent d026ce79

include/linux/sched.h

+0 −35
Original line number Diff line number Diff line
@@ -1236,41 +1236,6 @@ static inline struct vm_struct *task_stack_vm_area(const struct task_struct *t) 
}

#endif



#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);

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)

{

}

static inline bool should_numa_migrate_memory(struct task_struct *p,

				struct page *page, int src_nid, int dst_cpu)

{

	return true;

}

#endif



static inline struct pid *task_pid(struct task_struct *task)

{

	return task->pids[PIDTYPE_PID].pid;

include/linux/sched/numa_balancing.h

+40 −0
Original line number Diff line number Diff line 
#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);

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)

{

}

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 */