include/linux/sched/sysctl.h

   1 #ifndef _SCHED_SYSCTL_H
   2 #define _SCHED_SYSCTL_H
   3
   4 #ifdef CONFIG_DETECT_HUNG_TASK
   5 extern int           sysctl_hung_task_check_count;
   6 extern unsigned int  sysctl_hung_task_panic;
   7 extern unsigned long sysctl_hung_task_timeout_secs;
   8 extern int sysctl_hung_task_warnings;
   9 extern int proc_dohung_task_timeout_secs(struct ctl_table *table, int write,
  10                                          void __user *buffer,
  11                                          size_t *lenp, loff_t *ppos);
  12 #else
  13 /* Avoid need for ifdefs elsewhere in the code */
  14 enum { sysctl_hung_task_timeout_secs = 0 };
  15 #endif
  16
  17 extern unsigned int sysctl_sched_latency;
  18 extern unsigned int sysctl_sched_min_granularity;
  19 extern unsigned int sysctl_sched_wakeup_granularity;
  20 extern unsigned int sysctl_sched_child_runs_first;
  21
  22 enum sched_tunable_scaling {
  23         SCHED_TUNABLESCALING_NONE,
  24         SCHED_TUNABLESCALING_LOG,
  25         SCHED_TUNABLESCALING_LINEAR,
  26         SCHED_TUNABLESCALING_END,
  27 };
  28 extern enum sched_tunable_scaling sysctl_sched_tunable_scaling;
  29
  30 extern unsigned int sysctl_numa_balancing_scan_delay;
  31 extern unsigned int sysctl_numa_balancing_scan_period_min;
  32 extern unsigned int sysctl_numa_balancing_scan_period_max;
  33 extern unsigned int sysctl_numa_balancing_scan_size;
  34
  35 #ifdef CONFIG_SCHED_DEBUG
  36 extern __read_mostly unsigned int sysctl_sched_migration_cost;
  37 extern __read_mostly unsigned int sysctl_sched_nr_migrate;
  38 extern __read_mostly unsigned int sysctl_sched_time_avg;
  39 extern unsigned int sysctl_sched_shares_window;
  40
  41 int sched_proc_update_handler(struct ctl_table *table, int write,
  42                 void __user *buffer, size_t *length,
  43                 loff_t *ppos);
  44 #endif
  45
  46 /*
  47  *  control realtime throttling:
  48  *
  49  *  /proc/sys/kernel/sched_rt_period_us
  50  *  /proc/sys/kernel/sched_rt_runtime_us
  51  */
  52 extern unsigned int sysctl_sched_rt_period;
  53 extern int sysctl_sched_rt_runtime;
  54
  55 #ifdef CONFIG_CFS_BANDWIDTH
  56 extern unsigned int sysctl_sched_cfs_bandwidth_slice;
  57 #endif
  58
  59 #ifdef CONFIG_SCHED_AUTOGROUP
  60 extern unsigned int sysctl_sched_autogroup_enabled;
  61 #endif
  62
  63 extern int sysctl_sched_rr_timeslice;
  64 extern int sched_rr_timeslice;
  65
  66 extern int sched_rr_handler(struct ctl_table *table, int write,
  67                 void __user *buffer, size_t *lenp,
  68                 loff_t *ppos);
  69
  70 extern int sched_rt_handler(struct ctl_table *table, int write,
  71                 void __user *buffer, size_t *lenp,
  72                 loff_t *ppos);
  73
  74 extern int sysctl_numa_balancing(struct ctl_table *table, int write,
  75                                  void __user *buffer, size_t *lenp,
  76                                  loff_t *ppos);
  77
  78 extern int sysctl_schedstats(struct ctl_table *table, int write,
  79                                  void __user *buffer, size_t *lenp,
  80                                  loff_t *ppos);
  81
  82 #endif /* _SCHED_SYSCTL_H */