1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _LINUX_SCHED_SYSCTL_H 3 #define _LINUX_SCHED_SYSCTL_H 4 5 #include <linux/types.h> 6 7 struct ctl_table; 8 9 #ifdef CONFIG_DETECT_HUNG_TASK 10 extern int sysctl_hung_task_check_count; 11 extern unsigned int sysctl_hung_task_panic; 12 extern unsigned long sysctl_hung_task_timeout_secs; 13 extern int sysctl_hung_task_warnings; 14 extern int proc_dohung_task_timeout_secs(struct ctl_table *table, int write, 15 void __user *buffer, 16 size_t *lenp, loff_t *ppos); 17 #else 18 /* Avoid need for ifdefs elsewhere in the code */ 19 enum { sysctl_hung_task_timeout_secs = 0 }; 20 #endif 21 22 extern unsigned int sysctl_sched_latency; 23 extern unsigned int sysctl_sched_min_granularity; 24 extern unsigned int sysctl_sched_sync_hint_enable; 25 extern unsigned int sysctl_sched_cstate_aware; 26 extern unsigned int sysctl_sched_wakeup_granularity; 27 extern unsigned int sysctl_sched_child_runs_first; 28 #ifdef CONFIG_SCHED_WALT 29 extern unsigned int sysctl_sched_use_walt_cpu_util; 30 extern unsigned int sysctl_sched_use_walt_task_util; 31 extern unsigned int sysctl_sched_walt_init_task_load_pct; 32 extern unsigned int sysctl_sched_walt_cpu_high_irqload; 33 #endif 34 35 enum sched_tunable_scaling { 36 SCHED_TUNABLESCALING_NONE, 37 SCHED_TUNABLESCALING_LOG, 38 SCHED_TUNABLESCALING_LINEAR, 39 SCHED_TUNABLESCALING_END, 40 }; 41 extern enum sched_tunable_scaling sysctl_sched_tunable_scaling; 42 43 extern unsigned int sysctl_numa_balancing_scan_delay; 44 extern unsigned int sysctl_numa_balancing_scan_period_min; 45 extern unsigned int sysctl_numa_balancing_scan_period_max; 46 extern unsigned int sysctl_numa_balancing_scan_size; 47 48 #ifdef CONFIG_SCHED_DEBUG 49 extern __read_mostly unsigned int sysctl_sched_migration_cost; 50 extern __read_mostly unsigned int sysctl_sched_nr_migrate; 51 extern __read_mostly unsigned int sysctl_sched_time_avg; 52 53 int sched_proc_update_handler(struct ctl_table *table, int write, 54 void __user *buffer, size_t *length, 55 loff_t *ppos); 56 #endif 57 58 /* 59 * control realtime throttling: 60 * 61 * /proc/sys/kernel/sched_rt_period_us 62 * /proc/sys/kernel/sched_rt_runtime_us 63 */ 64 extern unsigned int sysctl_sched_rt_period; 65 extern int sysctl_sched_rt_runtime; 66 67 #ifdef CONFIG_CFS_BANDWIDTH 68 extern unsigned int sysctl_sched_cfs_bandwidth_slice; 69 #endif 70 71 #ifdef CONFIG_SCHED_AUTOGROUP 72 extern unsigned int sysctl_sched_autogroup_enabled; 73 #endif 74 75 extern int sysctl_sched_rr_timeslice; 76 extern int sched_rr_timeslice; 77 78 extern int sched_rr_handler(struct ctl_table *table, int write, 79 void __user *buffer, size_t *lenp, 80 loff_t *ppos); 81 82 extern int sched_rt_handler(struct ctl_table *table, int write, 83 void __user *buffer, size_t *lenp, 84 loff_t *ppos); 85 86 extern int sysctl_numa_balancing(struct ctl_table *table, int write, 87 void __user *buffer, size_t *lenp, 88 loff_t *ppos); 89 90 extern int sysctl_schedstats(struct ctl_table *table, int write, 91 void __user *buffer, size_t *lenp, 92 loff_t *ppos); 93 94 #endif /* _LINUX_SCHED_SYSCTL_H */ 95