include/linux/cpuset.h

   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);
  21 extern cpumask_t cpuset_cpus_allowed(const struct task_struct *p);
  22 void cpuset_init_current_mems_allowed(void);
  23 void cpuset_update_current_mems_allowed(void);
  24 void cpuset_restrict_to_mems_allowed(unsigned long *nodes);
  25 int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl);
  26 extern int cpuset_zone_allowed(struct zone *z, gfp_t gfp_mask);
  27 extern int cpuset_excl_nodes_overlap(const struct task_struct *p);
  28 extern struct file_operations proc_cpuset_operations;
  29 extern char *cpuset_task_status_allowed(struct task_struct *task, char *buffer);
  30
  31 #else /* !CONFIG_CPUSETS */
  32
  33 static inline int cpuset_init(void) { return 0; }
  34 static inline void cpuset_init_smp(void) {}
  35 static inline void cpuset_fork(struct task_struct *p) {}
  36 static inline void cpuset_exit(struct task_struct *p) {}
  37
  38 static inline cpumask_t cpuset_cpus_allowed(struct task_struct *p)
  39 {
  40         return cpu_possible_map;
  41 }
  42
  43 static inline void cpuset_init_current_mems_allowed(void) {}
  44 static inline void cpuset_update_current_mems_allowed(void) {}
  45 static inline void cpuset_restrict_to_mems_allowed(unsigned long *nodes) {}
  46
  47 static inline int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl)
  48 {
  49         return 1;
  50 }
  51
  52 static inline int cpuset_zone_allowed(struct zone *z, gfp_t gfp_mask)
  53 {
  54         return 1;
  55 }
  56
  57 static inline int cpuset_excl_nodes_overlap(const struct task_struct *p)
  58 {
  59         return 1;
  60 }
  61
  62 static inline char *cpuset_task_status_allowed(struct task_struct *task,
  63                                                         char *buffer)
  64 {
  65         return buffer;
  66 }
  67
  68 #endif /* !CONFIG_CPUSETS */
  69
  70 #endif /* _LINUX_CPUSET_H */