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