f9a86fcbbb
* Modify cpuset_cpus_allowed to return the currently allowed cpuset
via a pointer argument instead of as the function return value.
* Use new set_cpus_allowed_ptr function.
* Cleanup CPU_MASK_ALL and NODE_MASK_ALL uses.
Depends on:
[sched-devel]: sched: add new set_cpus_allowed_ptr function
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
161 lines
4 KiB
C
161 lines
4 KiB
C
#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_zonelist_valid_mems_allowed(struct zonelist *zl);
|
|
|
|
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);
|
|
|
|
#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_zonelist_valid_mems_allowed(struct zonelist *zl)
|
|
{
|
|
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;
|
|
}
|
|
|
|
#endif /* !CONFIG_CPUSETS */
|
|
|
|
#endif /* _LINUX_CPUSET_H */
|