1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_SCHED_SYSCTL_H
3 #define _LINUX_SCHED_SYSCTL_H
5 #include <linux/types.h>
9 #ifdef CONFIG_DETECT_HUNG_TASK
12 extern unsigned int sysctl_hung_task_all_cpu_backtrace;
14 #define sysctl_hung_task_all_cpu_backtrace 0
15 #endif /* CONFIG_SMP */
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);
25 /* Avoid need for ifdefs elsewhere in the code */
26 enum { sysctl_hung_task_timeout_secs = 0 };
29 extern unsigned int sysctl_sched_child_runs_first;
31 extern unsigned int sysctl_sched_latency;
32 extern unsigned int sysctl_sched_min_granularity;
33 extern unsigned int sysctl_sched_wakeup_granularity;
35 enum sched_tunable_scaling {
36 SCHED_TUNABLESCALING_NONE,
37 SCHED_TUNABLESCALING_LOG,
38 SCHED_TUNABLESCALING_LINEAR,
39 SCHED_TUNABLESCALING_END,
41 extern unsigned int sysctl_sched_tunable_scaling;
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;
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;
52 extern int sysctl_resched_latency_warn_ms;
53 extern int sysctl_resched_latency_warn_once;
57 * control realtime throttling:
59 * /proc/sys/kernel/sched_rt_period_us
60 * /proc/sys/kernel/sched_rt_runtime_us
62 extern unsigned int sysctl_sched_rt_period;
63 extern int sysctl_sched_rt_runtime;
65 extern unsigned int sysctl_sched_dl_period_max;
66 extern unsigned int sysctl_sched_dl_period_min;
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;
74 #ifdef CONFIG_CFS_BANDWIDTH
75 extern unsigned int sysctl_sched_cfs_bandwidth_slice;
78 #ifdef CONFIG_SCHED_AUTOGROUP
79 extern unsigned int sysctl_sched_autogroup_enabled;
82 extern int sysctl_sched_rr_timeslice;
83 extern int sched_rr_timeslice;
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);
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);
102 #endif /* _LINUX_SCHED_SYSCTL_H */