LCOV - code coverage report
Current view: top level - include/linux/sched - sysctl.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1 1 100.0 %
Date: 2014-02-18 Functions: 0 0 -
Branches: 0 0 -

           Branch data     Line data    Source code
       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 unsigned long 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                 :            : /*
      18                 :            :  * Default maximum number of active map areas, this limits the number of vmas
      19                 :            :  * per mm struct. Users can overwrite this number by sysctl but there is a
      20                 :            :  * problem.
      21                 :            :  *
      22                 :            :  * When a program's coredump is generated as ELF format, a section is created
      23                 :            :  * per a vma. In ELF, the number of sections is represented in unsigned short.
      24                 :            :  * This means the number of sections should be smaller than 65535 at coredump.
      25                 :            :  * Because the kernel adds some informative sections to a image of program at
      26                 :            :  * generating coredump, we need some margin. The number of extra sections is
      27                 :            :  * 1-3 now and depends on arch. We use "5" as safe margin, here.
      28                 :            :  */
      29                 :            : #define MAPCOUNT_ELF_CORE_MARGIN        (5)
      30                 :            : #define DEFAULT_MAX_MAP_COUNT   (USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN)
      31                 :            : 
      32                 :            : extern int sysctl_max_map_count;
      33                 :            : 
      34                 :            : extern unsigned int sysctl_sched_latency;
      35                 :            : extern unsigned int sysctl_sched_min_granularity;
      36                 :            : extern unsigned int sysctl_sched_wakeup_granularity;
      37                 :            : extern unsigned int sysctl_sched_child_runs_first;
      38                 :            : 
      39                 :            : enum sched_tunable_scaling {
      40                 :            :         SCHED_TUNABLESCALING_NONE,
      41                 :            :         SCHED_TUNABLESCALING_LOG,
      42                 :            :         SCHED_TUNABLESCALING_LINEAR,
      43                 :            :         SCHED_TUNABLESCALING_END,
      44                 :            : };
      45                 :            : extern enum sched_tunable_scaling sysctl_sched_tunable_scaling;
      46                 :            : 
      47                 :            : extern unsigned int sysctl_numa_balancing_scan_delay;
      48                 :            : extern unsigned int sysctl_numa_balancing_scan_period_min;
      49                 :            : extern unsigned int sysctl_numa_balancing_scan_period_max;
      50                 :            : extern unsigned int sysctl_numa_balancing_scan_size;
      51                 :            : extern unsigned int sysctl_numa_balancing_settle_count;
      52                 :            : 
      53                 :            : #ifdef CONFIG_SCHED_DEBUG
      54                 :            : extern unsigned int sysctl_sched_migration_cost;
      55                 :            : extern unsigned int sysctl_sched_nr_migrate;
      56                 :            : extern unsigned int sysctl_sched_time_avg;
      57                 :            : extern unsigned int sysctl_timer_migration;
      58                 :            : extern unsigned int sysctl_sched_shares_window;
      59                 :            : 
      60                 :            : int sched_proc_update_handler(struct ctl_table *table, int write,
      61                 :            :                 void __user *buffer, size_t *length,
      62                 :            :                 loff_t *ppos);
      63                 :            : #endif
      64                 :            : #ifdef CONFIG_SCHED_DEBUG
      65                 :            : static inline unsigned int get_sysctl_timer_migration(void)
      66                 :            : {
      67                 :    2793423 :         return sysctl_timer_migration;
      68                 :            : }
      69                 :            : #else
      70                 :            : static inline unsigned int get_sysctl_timer_migration(void)
      71                 :            : {
      72                 :            :         return 1;
      73                 :            : }
      74                 :            : #endif
      75                 :            : 
      76                 :            : /*
      77                 :            :  *  control realtime throttling:
      78                 :            :  *
      79                 :            :  *  /proc/sys/kernel/sched_rt_period_us
      80                 :            :  *  /proc/sys/kernel/sched_rt_runtime_us
      81                 :            :  */
      82                 :            : extern unsigned int sysctl_sched_rt_period;
      83                 :            : extern int sysctl_sched_rt_runtime;
      84                 :            : 
      85                 :            : #ifdef CONFIG_CFS_BANDWIDTH
      86                 :            : extern unsigned int sysctl_sched_cfs_bandwidth_slice;
      87                 :            : #endif
      88                 :            : 
      89                 :            : #ifdef CONFIG_SCHED_AUTOGROUP
      90                 :            : extern unsigned int sysctl_sched_autogroup_enabled;
      91                 :            : #endif
      92                 :            : 
      93                 :            : extern int sched_rr_timeslice;
      94                 :            : 
      95                 :            : extern int sched_rr_handler(struct ctl_table *table, int write,
      96                 :            :                 void __user *buffer, size_t *lenp,
      97                 :            :                 loff_t *ppos);
      98                 :            : 
      99                 :            : extern int sched_rt_handler(struct ctl_table *table, int write,
     100                 :            :                 void __user *buffer, size_t *lenp,
     101                 :            :                 loff_t *ppos);
     102                 :            : 
     103                 :            : #endif /* _SCHED_SYSCTL_H */

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