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 /* used for hung_task and block/ */ 11 extern unsigned long sysctl_hung_task_timeout_secs; 12 #else 13 /* Avoid need for ifdefs elsewhere in the code */ 14 enum { sysctl_hung_task_timeout_secs = 0 }; 15 #endif 16 17 extern unsigned int sysctl_sched_child_runs_first; 18 19 enum sched_tunable_scaling { 20 SCHED_TUNABLESCALING_NONE, 21 SCHED_TUNABLESCALING_LOG, 22 SCHED_TUNABLESCALING_LINEAR, 23 SCHED_TUNABLESCALING_END, 24 }; 25 26 #define NUMA_BALANCING_DISABLED 0x0 27 #define NUMA_BALANCING_NORMAL 0x1 28 #define NUMA_BALANCING_MEMORY_TIERING 0x2 29 30 #ifdef CONFIG_NUMA_BALANCING 31 extern int sysctl_numa_balancing_mode; 32 #else 33 #define sysctl_numa_balancing_mode 0 34 #endif 35 36 /* 37 * control realtime throttling: 38 * 39 * /proc/sys/kernel/sched_rt_period_us 40 * /proc/sys/kernel/sched_rt_runtime_us 41 */ 42 extern unsigned int sysctl_sched_rt_period; 43 extern int sysctl_sched_rt_runtime; 44 45 extern unsigned int sysctl_sched_dl_period_max; 46 extern unsigned int sysctl_sched_dl_period_min; 47 48 #ifdef CONFIG_UCLAMP_TASK 49 extern unsigned int sysctl_sched_uclamp_util_min; 50 extern unsigned int sysctl_sched_uclamp_util_max; 51 extern unsigned int sysctl_sched_uclamp_util_min_rt_default; 52 #endif 53 54 #ifdef CONFIG_CFS_BANDWIDTH 55 extern unsigned int sysctl_sched_cfs_bandwidth_slice; 56 #endif 57 58 extern int sysctl_sched_rr_timeslice; 59 extern int sched_rr_timeslice; 60 61 int sched_rr_handler(struct ctl_table *table, int write, void *buffer, 62 size_t *lenp, loff_t *ppos); 63 int sched_rt_handler(struct ctl_table *table, int write, void *buffer, 64 size_t *lenp, loff_t *ppos); 65 int sysctl_sched_uclamp_handler(struct ctl_table *table, int write, 66 void *buffer, size_t *lenp, loff_t *ppos); 67 int sysctl_numa_balancing(struct ctl_table *table, int write, void *buffer, 68 size_t *lenp, loff_t *ppos); 69 int sysctl_schedstats(struct ctl_table *table, int write, void *buffer, 70 size_t *lenp, loff_t *ppos); 71 72 #if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL) 73 extern unsigned int sysctl_sched_energy_aware; 74 int sched_energy_aware_handler(struct ctl_table *table, int write, 75 void *buffer, size_t *lenp, loff_t *ppos); 76 #endif 77 78 #endif /* _LINUX_SCHED_SYSCTL_H */ 79