root/include/linux/cpuset.h

INCLUDED FROM

DEFINITIONS

1. cpuset_zone_allowed_softwall
2. cpuset_zone_allowed_hardwall
3. cpuset_do_page_mem_spread
4. cpuset_do_slab_mem_spread
5. cpuset_init_early
6. cpuset_init
7. cpuset_init_smp
8. cpuset_cpus_allowed
9. cpuset_cpus_allowed_locked
10. cpuset_mems_allowed
11. cpuset_init_current_mems_allowed
12. cpuset_update_task_memory_state
13. cpuset_nodemask_valid_mems_allowed
14. cpuset_zone_allowed_softwall
15. cpuset_zone_allowed_hardwall
16. cpuset_mems_allowed_intersects
17. cpuset_memory_pressure_bump
18. cpuset_task_status_allowed
19. cpuset_lock
20. cpuset_unlock
21. cpuset_mem_spread_node
22. cpuset_do_page_mem_spread
23. cpuset_do_slab_mem_spread
24. cpuset_track_online_nodes
25. current_cpuset_is_being_rebound
26. rebuild_sched_domains

#ifndef _LINUX_CPUSET_H
#define _LINUX_CPUSET_H
/*
 *  cpuset interface
 *
 *  Copyright (C) 2003 BULL SA
 *  Copyright (C) 2004-2006 Silicon Graphics, Inc.
 *
 */

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

#ifdef CONFIG_CPUSETS

extern int number_of_cpusets;   /* How many cpusets are defined in system? */

extern int cpuset_init_early(void);
extern int cpuset_init(void);
extern void cpuset_init_smp(void);
extern void cpuset_cpus_allowed(struct task_struct *p, cpumask_t *mask);
extern void cpuset_cpus_allowed_locked(struct task_struct *p, cpumask_t *mask);
extern nodemask_t cpuset_mems_allowed(struct task_struct *p);
#define cpuset_current_mems_allowed (current->mems_allowed)
void cpuset_init_current_mems_allowed(void);
void cpuset_update_task_memory_state(void);
int cpuset_nodemask_valid_mems_allowed(nodemask_t *nodemask);

extern int __cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask);
extern int __cpuset_zone_allowed_hardwall(struct zone *z, gfp_t gfp_mask);

static int inline cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask)
{
        return number_of_cpusets <= 1 ||
                __cpuset_zone_allowed_softwall(z, gfp_mask);
}

static int inline cpuset_zone_allowed_hardwall(struct zone *z, gfp_t gfp_mask)
{
        return number_of_cpusets <= 1 ||
                __cpuset_zone_allowed_hardwall(z, gfp_mask);
}

extern int cpuset_mems_allowed_intersects(const struct task_struct *tsk1,
                                          const struct task_struct *tsk2);

#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 const struct file_operations proc_cpuset_operations;
struct seq_file;
extern void cpuset_task_status_allowed(struct seq_file *m,
                                        struct task_struct *task);

extern void cpuset_lock(void);
extern void cpuset_unlock(void);

extern int cpuset_mem_spread_node(void);

static inline int cpuset_do_page_mem_spread(void)
{
        return current->flags & PF_SPREAD_PAGE;
}

static inline int cpuset_do_slab_mem_spread(void)
{
        return current->flags & PF_SPREAD_SLAB;
}

extern void cpuset_track_online_nodes(void);

extern int current_cpuset_is_being_rebound(void);

extern void rebuild_sched_domains(void);

#else /* !CONFIG_CPUSETS */

static inline int cpuset_init_early(void) { return 0; }
static inline int cpuset_init(void) { return 0; }
static inline void cpuset_init_smp(void) {}

static inline void cpuset_cpus_allowed(struct task_struct *p, cpumask_t *mask)
{
        *mask = cpu_possible_map;
}
static inline void cpuset_cpus_allowed_locked(struct task_struct *p,
                                                                cpumask_t *mask)
{
        *mask = cpu_possible_map;
}

static inline nodemask_t cpuset_mems_allowed(struct task_struct *p)
{
        return node_possible_map;
}

#define cpuset_current_mems_allowed (node_states[N_HIGH_MEMORY])
static inline void cpuset_init_current_mems_allowed(void) {}
static inline void cpuset_update_task_memory_state(void) {}

static inline int cpuset_nodemask_valid_mems_allowed(nodemask_t *nodemask)
{
        return 1;
}

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

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

static inline int cpuset_mems_allowed_intersects(const struct task_struct *tsk1,
                                                 const struct task_struct *tsk2)
{
        return 1;
}

static inline void cpuset_memory_pressure_bump(void) {}

static inline void cpuset_task_status_allowed(struct seq_file *m,
                                                struct task_struct *task)
{
}

static inline void cpuset_lock(void) {}
static inline void cpuset_unlock(void) {}

static inline int cpuset_mem_spread_node(void)
{
        return 0;
}

static inline int cpuset_do_page_mem_spread(void)
{
        return 0;
}

static inline int cpuset_do_slab_mem_spread(void)
{
        return 0;
}

static inline void cpuset_track_online_nodes(void) {}

static inline int current_cpuset_is_being_rebound(void)
{
        return 0;
}

static inline void rebuild_sched_domains(void)
{
        partition_sched_domains(1, NULL, NULL);
}

#endif /* !CONFIG_CPUSETS */

#endif /* _LINUX_CPUSET_H */