diff options
Diffstat (limited to 'include/linux/cpuset.h')
| -rw-r--r-- | include/linux/cpuset.h | 46 |
1 files changed, 40 insertions, 6 deletions
diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h index 6e2deef96b3..3bc60692711 100644 --- a/include/linux/cpuset.h +++ b/include/linux/cpuset.h @@ -14,22 +14,46 @@ #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_fork(struct task_struct *p); extern void cpuset_exit(struct task_struct *p); -extern cpumask_t cpuset_cpus_allowed(const struct task_struct *p); +extern cpumask_t cpuset_cpus_allowed(struct task_struct *p); +extern nodemask_t cpuset_mems_allowed(struct task_struct *p); void cpuset_init_current_mems_allowed(void); -void cpuset_update_current_mems_allowed(void); -void cpuset_restrict_to_mems_allowed(unsigned long *nodes); +void cpuset_update_task_memory_state(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_zone_allowed(struct zone *z, gfp_t gfp_mask); +static int inline cpuset_zone_allowed(struct zone *z, gfp_t gfp_mask) +{ + return number_of_cpusets <= 1 || __cpuset_zone_allowed(z, 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); +extern void cpuset_lock(void); +extern void cpuset_unlock(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_fork(struct task_struct *p) {} @@ -40,9 +64,14 @@ static inline cpumask_t cpuset_cpus_allowed(struct task_struct *p) return cpu_possible_map; } +static inline nodemask_t cpuset_mems_allowed(struct task_struct *p) +{ + return node_possible_map; +} + static inline void cpuset_init_current_mems_allowed(void) {} -static inline void cpuset_update_current_mems_allowed(void) {} -static inline void cpuset_restrict_to_mems_allowed(unsigned long *nodes) {} +static inline void cpuset_update_task_memory_state(void) {} +#define cpuset_nodes_subset_current_mems_allowed(nodes) (1) static inline int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl) { @@ -59,12 +88,17 @@ 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; } +static inline void cpuset_lock(void) {} +static inline void cpuset_unlock(void) {} + #endif /* !CONFIG_CPUSETS */ #endif /* _LINUX_CPUSET_H */ |