[linux-block.git] / include / linux / cpuset.h

#ifndef _LINUX_CPUSET_H
#define _LINUX_CPUSET_H
/*
 *  cpuset interface
 *
 *  Copyright (C) 2003 BULL SA
 *  Copyright (C) 2004 Silicon Graphics, Inc.
 *
 */

#include <linux/sched.h>
#include <linux/cpumask.h>
#include <linux/nodemask.h>

#ifdef CONFIG_CPUSETS

extern int cpuset_init(void);
extern void cpuset_init_smp(void);
extern void cpuset_fork(struct task_struct *p);
extern void cpuset_exit(struct task_struct *p);
extern cpumask_t cpuset_cpus_allowed(const struct task_struct *p);
void cpuset_init_current_mems_allowed(void);
void cpuset_update_current_mems_allowed(void);
#define cpuset_nodes_subset_current_mems_allowed(nodes) \
		nodes_subset((nodes), current->mems_allowed)
int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl);
extern int cpuset_zone_allowed(struct zone *z, gfp_t gfp_mask);
extern int cpuset_excl_nodes_overlap(const struct task_struct *p);

#define cpuset_memory_pressure_bump() 				\
	do {							\
		if (cpuset_memory_pressure_enabled)		\
			__cpuset_memory_pressure_bump();	\
	} while (0)
extern int cpuset_memory_pressure_enabled;
extern void __cpuset_memory_pressure_bump(void);

extern struct file_operations proc_cpuset_operations;
extern char *cpuset_task_status_allowed(struct task_struct *task, char *buffer);

#else /* !CONFIG_CPUSETS */

static inline int cpuset_init(void) { return 0; }
static inline void cpuset_init_smp(void) {}
static inline void cpuset_fork(struct task_struct *p) {}
static inline void cpuset_exit(struct task_struct *p) {}

static inline cpumask_t cpuset_cpus_allowed(struct task_struct *p)
{
	return cpu_possible_map;
}

static inline void cpuset_init_current_mems_allowed(void) {}
static inline void cpuset_update_current_mems_allowed(void) {}
#define cpuset_nodes_subset_current_mems_allowed(nodes) (1)

static inline int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl)
{
	return 1;
}

static inline int cpuset_zone_allowed(struct zone *z, gfp_t gfp_mask)
{
	return 1;
}

static inline int cpuset_excl_nodes_overlap(const struct task_struct *p)
{
	return 1;
}

static inline void cpuset_memory_pressure_bump(void) {}

static inline char *cpuset_task_status_allowed(struct task_struct *task,
							char *buffer)
{
	return buffer;
}

#endif /* !CONFIG_CPUSETS */

#endif /* _LINUX_CPUSET_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _LINUX_CPUSET_H
	2	#define _LINUX_CPUSET_H
	3	/*
	4	* cpuset interface
	5	*
	6	* Copyright (C) 2003 BULL SA
	7	* Copyright (C) 2004 Silicon Graphics, Inc.
	8	*
	9	*/
	10
	11	#include <linux/sched.h>
	12	#include <linux/cpumask.h>
	13	#include <linux/nodemask.h>
	14
	15	#ifdef CONFIG_CPUSETS
	16
	17	extern int cpuset_init(void);
	18	extern void cpuset_init_smp(void);
	19	extern void cpuset_fork(struct task_struct *p);
	20	extern void cpuset_exit(struct task_struct *p);
9a848896	21	extern cpumask_t cpuset_cpus_allowed(const struct task_struct *p);
1da177e4 LT	22	void cpuset_init_current_mems_allowed(void);
1da177e4 LT	23	void cpuset_update_current_mems_allowed(void);
5966514d PJ	24	#define cpuset_nodes_subset_current_mems_allowed(nodes) \
5966514d PJ	25	nodes_subset((nodes), current->mems_allowed)
1da177e4	26	int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl);
dd0fc66f	27	extern int cpuset_zone_allowed(struct zone *z, gfp_t gfp_mask);
ef08e3b4	28	extern int cpuset_excl_nodes_overlap(const struct task_struct *p);
3e0d98b9 PJ	29
	30	#define cpuset_memory_pressure_bump() \
	31	do { \
	32	if (cpuset_memory_pressure_enabled) \
	33	__cpuset_memory_pressure_bump(); \
	34	} while (0)
	35	extern int cpuset_memory_pressure_enabled;
	36	extern void __cpuset_memory_pressure_bump(void);
	37
1da177e4 LT	38	extern struct file_operations proc_cpuset_operations;
	39	extern char cpuset_task_status_allowed(struct task_struct task, char *buffer);
	40
	41	#else /* !CONFIG_CPUSETS */
	42
	43	static inline int cpuset_init(void) { return 0; }
	44	static inline void cpuset_init_smp(void) {}
	45	static inline void cpuset_fork(struct task_struct *p) {}
	46	static inline void cpuset_exit(struct task_struct *p) {}
	47
	48	static inline cpumask_t cpuset_cpus_allowed(struct task_struct *p)
	49	{
	50	return cpu_possible_map;
	51	}
	52
	53	static inline void cpuset_init_current_mems_allowed(void) {}
	54	static inline void cpuset_update_current_mems_allowed(void) {}
5966514d	55	#define cpuset_nodes_subset_current_mems_allowed(nodes) (1)
1da177e4 LT	56
	57	static inline int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl)
	58	{
	59	return 1;
	60	}
	61
dd0fc66f	62	static inline int cpuset_zone_allowed(struct zone *z, gfp_t gfp_mask)
1da177e4 LT	63	{
	64	return 1;
	65	}
	66
ef08e3b4 PJ	67	static inline int cpuset_excl_nodes_overlap(const struct task_struct *p)
	68	{
	69	return 1;
	70	}
	71
3e0d98b9 PJ	72	static inline void cpuset_memory_pressure_bump(void) {}
3e0d98b9 PJ	73
1da177e4 LT	74	static inline char cpuset_task_status_allowed(struct task_struct task,
	75	char *buffer)
	76	{
	77	return buffer;
	78	}
	79
	80	#endif /* !CONFIG_CPUSETS */
	81
	82	#endif /* _LINUX_CPUSET_H */