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 unsigned long sysctl_hung_task_check_interval_secs; 14 extern int sysctl_hung_task_warnings; 15 extern int proc_dohung_task_timeout_secs(struct ctl_table *table, int write, 16 void __user *buffer, 17 size_t *lenp, loff_t *ppos); 18 #else 19 /* Avoid need for ifdefs elsewhere in the code */ 20 enum { sysctl_hung_task_timeout_secs = 0 }; 21 #endif 22 23 extern unsigned int sysctl_sched_latency; 24 extern unsigned int sysctl_sched_min_granularity; 25 extern unsigned int sysctl_sched_wakeup_granularity; 26 extern unsigned int sysctl_sched_child_runs_first; 27 28 enum sched_tunable_scaling { 29 SCHED_TUNABLESCALING_NONE, 30 SCHED_TUNABLESCALING_LOG, 31 SCHED_TUNABLESCALING_LINEAR, 32 SCHED_TUNABLESCALING_END, 33 }; 34 extern enum sched_tunable_scaling sysctl_sched_tunable_scaling; 35 36 extern unsigned int sysctl_numa_balancing_scan_delay; 37 extern unsigned int sysctl_numa_balancing_scan_period_min; 38 extern unsigned int sysctl_numa_balancing_scan_period_max; 39 extern unsigned int sysctl_numa_balancing_scan_size; 40 41 #ifdef CONFIG_SCHED_DEBUG 42 extern __read_mostly unsigned int sysctl_sched_migration_cost; 43 extern __read_mostly unsigned int sysctl_sched_nr_migrate; 44 45 int sched_proc_update_handler(struct ctl_table *table, int write, 46 void __user *buffer, size_t *length, 47 loff_t *ppos); 48 #endif 49 50 /* 51 * control realtime throttling: 52 * 53 * /proc/sys/kernel/sched_rt_period_us 54 * /proc/sys/kernel/sched_rt_runtime_us 55 */ 56 extern unsigned int sysctl_sched_rt_period; 57 extern int sysctl_sched_rt_runtime; 58 59 #ifdef CONFIG_UCLAMP_TASK 60 extern unsigned int sysctl_sched_uclamp_util_min; 61 extern unsigned int sysctl_sched_uclamp_util_max; 62 #endif 63 64 #ifdef CONFIG_CFS_BANDWIDTH 65 extern unsigned int sysctl_sched_cfs_bandwidth_slice; 66 #endif 67 68 #ifdef CONFIG_SCHED_AUTOGROUP 69 extern unsigned int sysctl_sched_autogroup_enabled; 70 #endif 71 72 extern int sysctl_sched_rr_timeslice; 73 extern int sched_rr_timeslice; 74 75 extern int sched_rr_handler(struct ctl_table *table, int write, 76 void __user *buffer, size_t *lenp, 77 loff_t *ppos); 78 79 extern int sched_rt_handler(struct ctl_table *table, int write, 80 void __user *buffer, size_t *lenp, 81 loff_t *ppos); 82 83 #ifdef CONFIG_UCLAMP_TASK 84 extern int sysctl_sched_uclamp_handler(struct ctl_table *table, int write, 85 void __user *buffer, size_t *lenp, 86 loff_t *ppos); 87 #endif 88 89 extern int sysctl_numa_balancing(struct ctl_table *table, int write, 90 void __user *buffer, size_t *lenp, 91 loff_t *ppos); 92 93 extern int sysctl_schedstats(struct ctl_table *table, int write, 94 void __user *buffer, size_t *lenp, 95 loff_t *ppos); 96 97 #if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL) 98 extern unsigned int sysctl_sched_energy_aware; 99 extern int sched_energy_aware_handler(struct ctl_table *table, int write, 100 void __user *buffer, size_t *lenp, 101 loff_t *ppos); 102 #endif 103 104 #endif /* _LINUX_SCHED_SYSCTL_H */ 105