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 11 #ifdef CONFIG_SMP 12 extern unsigned int sysctl_hung_task_all_cpu_backtrace; 13 #else 14 #define sysctl_hung_task_all_cpu_backtrace 0 15 #endif /* CONFIG_SMP */ 16 17 extern int sysctl_hung_task_check_count; 18 extern unsigned int sysctl_hung_task_panic; 19 extern unsigned long sysctl_hung_task_timeout_secs; 20 extern unsigned long sysctl_hung_task_check_interval_secs; 21 extern int sysctl_hung_task_warnings; 22 int proc_dohung_task_timeout_secs(struct ctl_table *table, int write, 23 void *buffer, size_t *lenp, loff_t *ppos); 24 #else 25 /* Avoid need for ifdefs elsewhere in the code */ 26 enum { sysctl_hung_task_timeout_secs = 0 }; 27 #endif 28 29 extern unsigned int sysctl_sched_latency; 30 extern unsigned int sysctl_sched_min_granularity; 31 extern unsigned int sysctl_sched_wakeup_granularity; 32 extern unsigned int sysctl_sched_child_runs_first; 33 #ifdef CONFIG_SCHED_WALT 34 extern unsigned int sysctl_sched_use_walt_cpu_util; 35 extern unsigned int sysctl_sched_use_walt_task_util; 36 extern unsigned int sysctl_sched_walt_init_task_load_pct; 37 extern unsigned int sysctl_sched_cpu_high_irqload; 38 39 extern int 40 sysctl_sched_walt_init_task_load_pct_sysctl_handler(struct ctl_table *table, 41 int write, void __user *buffer, size_t *length, loff_t *ppos); 42 #endif 43 44 #ifdef CONFIG_SCHED_RT_CAS 45 extern unsigned int sysctl_sched_enable_rt_cas; 46 #endif 47 #ifdef CONFIG_SCHED_RT_ACTIVE_LB 48 extern unsigned int sysctl_sched_enable_rt_active_lb; 49 #endif 50 51 enum sched_tunable_scaling { 52 SCHED_TUNABLESCALING_NONE, 53 SCHED_TUNABLESCALING_LOG, 54 SCHED_TUNABLESCALING_LINEAR, 55 SCHED_TUNABLESCALING_END, 56 }; 57 extern enum sched_tunable_scaling sysctl_sched_tunable_scaling; 58 59 extern unsigned int sysctl_numa_balancing_scan_delay; 60 extern unsigned int sysctl_numa_balancing_scan_period_min; 61 extern unsigned int sysctl_numa_balancing_scan_period_max; 62 extern unsigned int sysctl_numa_balancing_scan_size; 63 64 #ifdef CONFIG_SCHED_DEBUG 65 extern __read_mostly unsigned int sysctl_sched_migration_cost; 66 extern __read_mostly unsigned int sysctl_sched_nr_migrate; 67 68 int sched_proc_update_handler(struct ctl_table *table, int write, 69 void *buffer, size_t *length, loff_t *ppos); 70 #endif 71 72 /* 73 * control realtime throttling: 74 * 75 * /proc/sys/kernel/sched_rt_period_us 76 * /proc/sys/kernel/sched_rt_runtime_us 77 */ 78 extern unsigned int sysctl_sched_rt_period; 79 extern int sysctl_sched_rt_runtime; 80 81 extern unsigned int sysctl_sched_dl_period_max; 82 extern unsigned int sysctl_sched_dl_period_min; 83 84 #ifdef CONFIG_UCLAMP_TASK 85 extern unsigned int sysctl_sched_uclamp_util_min; 86 extern unsigned int sysctl_sched_uclamp_util_max; 87 extern unsigned int sysctl_sched_uclamp_util_min_rt_default; 88 #endif 89 90 #ifdef CONFIG_CFS_BANDWIDTH 91 extern unsigned int sysctl_sched_cfs_bandwidth_slice; 92 #endif 93 94 #ifdef CONFIG_SCHED_AUTOGROUP 95 extern unsigned int sysctl_sched_autogroup_enabled; 96 #endif 97 98 extern int sysctl_sched_rr_timeslice; 99 extern int sched_rr_timeslice; 100 101 int sched_rr_handler(struct ctl_table *table, int write, void *buffer, 102 size_t *lenp, loff_t *ppos); 103 int sched_rt_handler(struct ctl_table *table, int write, void *buffer, 104 size_t *lenp, loff_t *ppos); 105 int sysctl_sched_uclamp_handler(struct ctl_table *table, int write, 106 void *buffer, size_t *lenp, loff_t *ppos); 107 int sysctl_numa_balancing(struct ctl_table *table, int write, void *buffer, 108 size_t *lenp, loff_t *ppos); 109 int sysctl_schedstats(struct ctl_table *table, int write, void *buffer, 110 size_t *lenp, loff_t *ppos); 111 112 #if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL) 113 extern unsigned int sysctl_sched_energy_aware; 114 int sched_energy_aware_handler(struct ctl_table *table, int write, 115 void *buffer, size_t *lenp, loff_t *ppos); 116 #endif 117 118 #endif /* _LINUX_SCHED_SYSCTL_H */ 119