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_child_runs_first; 30 31 extern unsigned int sysctl_sched_latency; 32 extern unsigned int sysctl_sched_min_granularity; 33 extern unsigned int sysctl_sched_wakeup_granularity; 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 unsigned int 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 52 extern int sysctl_resched_latency_warn_ms; 53 extern int sysctl_resched_latency_warn_once; 54 #endif 55 56 /* 57 * control realtime throttling: 58 * 59 * /proc/sys/kernel/sched_rt_period_us 60 * /proc/sys/kernel/sched_rt_runtime_us 61 */ 62 extern unsigned int sysctl_sched_rt_period; 63 extern int sysctl_sched_rt_runtime; 64 65 extern unsigned int sysctl_sched_dl_period_max; 66 extern unsigned int sysctl_sched_dl_period_min; 67 68 #ifdef CONFIG_UCLAMP_TASK 69 extern unsigned int sysctl_sched_uclamp_util_min; 70 extern unsigned int sysctl_sched_uclamp_util_max; 71 extern unsigned int sysctl_sched_uclamp_util_min_rt_default; 72 #endif 73 74 #ifdef CONFIG_CFS_BANDWIDTH 75 extern unsigned int sysctl_sched_cfs_bandwidth_slice; 76 #endif 77 78 #ifdef CONFIG_SCHED_AUTOGROUP 79 extern unsigned int sysctl_sched_autogroup_enabled; 80 #endif 81 82 extern int sysctl_sched_rr_timeslice; 83 extern int sched_rr_timeslice; 84 85 int sched_rr_handler(struct ctl_table *table, int write, void *buffer, 86 size_t *lenp, loff_t *ppos); 87 int sched_rt_handler(struct ctl_table *table, int write, void *buffer, 88 size_t *lenp, loff_t *ppos); 89 int sysctl_sched_uclamp_handler(struct ctl_table *table, int write, 90 void *buffer, size_t *lenp, loff_t *ppos); 91 int sysctl_numa_balancing(struct ctl_table *table, int write, void *buffer, 92 size_t *lenp, loff_t *ppos); 93 int sysctl_schedstats(struct ctl_table *table, int write, void *buffer, 94 size_t *lenp, loff_t *ppos); 95 96 #if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL) 97 extern unsigned int sysctl_sched_energy_aware; 98 int sched_energy_aware_handler(struct ctl_table *table, int write, 99 void *buffer, size_t *lenp, loff_t *ppos); 100 #endif 101 102 #endif /* _LINUX_SCHED_SYSCTL_H */ 103