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 int proc_dohung_task_timeout_secs(struct ctl_table *table, int write, 16 void *buffer, 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_wakeup_granularity; 25 extern unsigned int sysctl_sched_child_runs_first; 26 27 enum sched_tunable_scaling { 28 SCHED_TUNABLESCALING_NONE, 29 SCHED_TUNABLESCALING_LOG, 30 SCHED_TUNABLESCALING_LINEAR, 31 SCHED_TUNABLESCALING_END, 32 }; 33 extern enum sched_tunable_scaling sysctl_sched_tunable_scaling; 34 35 extern unsigned int sysctl_numa_balancing_scan_delay; 36 extern unsigned int sysctl_numa_balancing_scan_period_min; 37 extern unsigned int sysctl_numa_balancing_scan_period_max; 38 extern unsigned int sysctl_numa_balancing_scan_size; 39 40 #ifdef CONFIG_SCHED_DEBUG 41 extern __read_mostly unsigned int sysctl_sched_migration_cost; 42 extern __read_mostly unsigned int sysctl_sched_nr_migrate; 43 44 int sched_proc_update_handler(struct ctl_table *table, int write, 45 void *buffer, size_t *length, loff_t *ppos); 46 #endif 47 48 /* 49 * control realtime throttling: 50 * 51 * /proc/sys/kernel/sched_rt_period_us 52 * /proc/sys/kernel/sched_rt_runtime_us 53 */ 54 extern unsigned int sysctl_sched_rt_period; 55 extern int sysctl_sched_rt_runtime; 56 57 #ifdef CONFIG_UCLAMP_TASK 58 extern unsigned int sysctl_sched_uclamp_util_min; 59 extern unsigned int sysctl_sched_uclamp_util_max; 60 #endif 61 62 #ifdef CONFIG_CFS_BANDWIDTH 63 extern unsigned int sysctl_sched_cfs_bandwidth_slice; 64 #endif 65 66 #ifdef CONFIG_SCHED_AUTOGROUP 67 extern unsigned int sysctl_sched_autogroup_enabled; 68 #endif 69 70 extern int sysctl_sched_rr_timeslice; 71 extern int sched_rr_timeslice; 72 73 int sched_rr_handler(struct ctl_table *table, int write, void *buffer, 74 size_t *lenp, loff_t *ppos); 75 int sched_rt_handler(struct ctl_table *table, int write, void *buffer, 76 size_t *lenp, loff_t *ppos); 77 int sysctl_sched_uclamp_handler(struct ctl_table *table, int write, 78 void *buffer, size_t *lenp, loff_t *ppos); 79 int sysctl_numa_balancing(struct ctl_table *table, int write, void *buffer, 80 size_t *lenp, loff_t *ppos); 81 int sysctl_schedstats(struct ctl_table *table, int write, void *buffer, 82 size_t *lenp, loff_t *ppos); 83 84 #if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL) 85 extern unsigned int sysctl_sched_energy_aware; 86 int sched_energy_aware_handler(struct ctl_table *table, int write, 87 void *buffer, size_t *lenp, loff_t *ppos); 88 #endif 89 90 #endif /* _LINUX_SCHED_SYSCTL_H */ 91