#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, struct cpumask *mask); extern void cpuset_cpus_allowed_locked(struct task_struct *p, struct cpumask *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 int current_cpuset_is_being_rebound(void); extern void rebuild_sched_domains(void); extern void cpuset_print_task_mems_allowed(struct task_struct *p); #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, struct cpumask *mask) { *mask = cpu_possible_map; } static inline void cpuset_cpus_allowed_locked(struct task_struct *p, struct cpumask *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 int current_cpuset_is_being_rebound(void) { return 0; } static inline void rebuild_sched_domains(void) { partition_sched_domains(1, NULL, NULL); } static inline void cpuset_print_task_mems_allowed(struct task_struct *p) { } #endif /* !CONFIG_CPUSETS */ #endif /* _LINUX_CPUSET_H */