Linux kernel mirror (for testing)
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linux
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
7struct ctl_table;
8
9#ifdef CONFIG_DETECT_HUNG_TASK
10
11#ifdef CONFIG_SMP
12extern unsigned int sysctl_hung_task_all_cpu_backtrace;
13#else
14#define sysctl_hung_task_all_cpu_backtrace 0
15#endif /* CONFIG_SMP */
16
17extern int sysctl_hung_task_check_count;
18extern unsigned int sysctl_hung_task_panic;
19extern unsigned long sysctl_hung_task_timeout_secs;
20extern unsigned long sysctl_hung_task_check_interval_secs;
21extern int sysctl_hung_task_warnings;
22int 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 */
26enum { sysctl_hung_task_timeout_secs = 0 };
27#endif
28
29extern unsigned int sysctl_sched_child_runs_first;
30
31extern unsigned int sysctl_sched_latency;
32extern unsigned int sysctl_sched_min_granularity;
33extern unsigned int sysctl_sched_wakeup_granularity;
34
35enum sched_tunable_scaling {
36 SCHED_TUNABLESCALING_NONE,
37 SCHED_TUNABLESCALING_LOG,
38 SCHED_TUNABLESCALING_LINEAR,
39 SCHED_TUNABLESCALING_END,
40};
41extern unsigned int sysctl_sched_tunable_scaling;
42
43extern unsigned int sysctl_numa_balancing_scan_delay;
44extern unsigned int sysctl_numa_balancing_scan_period_min;
45extern unsigned int sysctl_numa_balancing_scan_period_max;
46extern unsigned int sysctl_numa_balancing_scan_size;
47
48#ifdef CONFIG_SCHED_DEBUG
49extern __read_mostly unsigned int sysctl_sched_migration_cost;
50extern __read_mostly unsigned int sysctl_sched_nr_migrate;
51
52extern int sysctl_resched_latency_warn_ms;
53extern 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 */
62extern unsigned int sysctl_sched_rt_period;
63extern int sysctl_sched_rt_runtime;
64
65extern unsigned int sysctl_sched_dl_period_max;
66extern unsigned int sysctl_sched_dl_period_min;
67
68#ifdef CONFIG_UCLAMP_TASK
69extern unsigned int sysctl_sched_uclamp_util_min;
70extern unsigned int sysctl_sched_uclamp_util_max;
71extern unsigned int sysctl_sched_uclamp_util_min_rt_default;
72#endif
73
74#ifdef CONFIG_CFS_BANDWIDTH
75extern unsigned int sysctl_sched_cfs_bandwidth_slice;
76#endif
77
78#ifdef CONFIG_SCHED_AUTOGROUP
79extern unsigned int sysctl_sched_autogroup_enabled;
80#endif
81
82extern int sysctl_sched_rr_timeslice;
83extern int sched_rr_timeslice;
84
85int sched_rr_handler(struct ctl_table *table, int write, void *buffer,
86 size_t *lenp, loff_t *ppos);
87int sched_rt_handler(struct ctl_table *table, int write, void *buffer,
88 size_t *lenp, loff_t *ppos);
89int sysctl_sched_uclamp_handler(struct ctl_table *table, int write,
90 void *buffer, size_t *lenp, loff_t *ppos);
91int sysctl_numa_balancing(struct ctl_table *table, int write, void *buffer,
92 size_t *lenp, loff_t *ppos);
93int 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)
97extern unsigned int sysctl_sched_energy_aware;
98int 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 */