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cf4aebc2 CW |
1 | #ifndef _SCHED_SYSCTL_H |
2 | #define _SCHED_SYSCTL_H | |
3 | ||
4 | #ifdef CONFIG_DETECT_HUNG_TASK | |
cd64647f | 5 | extern int sysctl_hung_task_check_count; |
cf4aebc2 | 6 | extern unsigned int sysctl_hung_task_panic; |
cf4aebc2 CW |
7 | extern unsigned long sysctl_hung_task_timeout_secs; |
8 | extern unsigned long sysctl_hung_task_warnings; | |
9 | extern int proc_dohung_task_timeout_secs(struct ctl_table *table, int write, | |
10 | void __user *buffer, | |
11 | size_t *lenp, loff_t *ppos); | |
12 | #else | |
13 | /* Avoid need for ifdefs elsewhere in the code */ | |
14 | enum { sysctl_hung_task_timeout_secs = 0 }; | |
15 | #endif | |
16 | ||
17 | /* | |
18 | * Default maximum number of active map areas, this limits the number of vmas | |
19 | * per mm struct. Users can overwrite this number by sysctl but there is a | |
20 | * problem. | |
21 | * | |
22 | * When a program's coredump is generated as ELF format, a section is created | |
23 | * per a vma. In ELF, the number of sections is represented in unsigned short. | |
24 | * This means the number of sections should be smaller than 65535 at coredump. | |
25 | * Because the kernel adds some informative sections to a image of program at | |
26 | * generating coredump, we need some margin. The number of extra sections is | |
27 | * 1-3 now and depends on arch. We use "5" as safe margin, here. | |
28 | */ | |
29 | #define MAPCOUNT_ELF_CORE_MARGIN (5) | |
30 | #define DEFAULT_MAX_MAP_COUNT (USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN) | |
31 | ||
32 | extern int sysctl_max_map_count; | |
33 | ||
34 | extern unsigned int sysctl_sched_latency; | |
35 | extern unsigned int sysctl_sched_min_granularity; | |
36 | extern unsigned int sysctl_sched_wakeup_granularity; | |
37 | extern unsigned int sysctl_sched_child_runs_first; | |
38 | ||
39 | enum sched_tunable_scaling { | |
40 | SCHED_TUNABLESCALING_NONE, | |
41 | SCHED_TUNABLESCALING_LOG, | |
42 | SCHED_TUNABLESCALING_LINEAR, | |
43 | SCHED_TUNABLESCALING_END, | |
44 | }; | |
45 | extern enum sched_tunable_scaling sysctl_sched_tunable_scaling; | |
46 | ||
47 | extern unsigned int sysctl_numa_balancing_scan_delay; | |
48 | extern unsigned int sysctl_numa_balancing_scan_period_min; | |
49 | extern unsigned int sysctl_numa_balancing_scan_period_max; | |
50 | extern unsigned int sysctl_numa_balancing_scan_period_reset; | |
51 | extern unsigned int sysctl_numa_balancing_scan_size; | |
52 | extern unsigned int sysctl_numa_balancing_settle_count; | |
53 | ||
54 | #ifdef CONFIG_SCHED_DEBUG | |
55 | extern unsigned int sysctl_sched_migration_cost; | |
56 | extern unsigned int sysctl_sched_nr_migrate; | |
57 | extern unsigned int sysctl_sched_time_avg; | |
58 | extern unsigned int sysctl_timer_migration; | |
59 | extern unsigned int sysctl_sched_shares_window; | |
60 | ||
61 | int sched_proc_update_handler(struct ctl_table *table, int write, | |
62 | void __user *buffer, size_t *length, | |
63 | loff_t *ppos); | |
64 | #endif | |
65 | #ifdef CONFIG_SCHED_DEBUG | |
66 | static inline unsigned int get_sysctl_timer_migration(void) | |
67 | { | |
68 | return sysctl_timer_migration; | |
69 | } | |
70 | #else | |
71 | static inline unsigned int get_sysctl_timer_migration(void) | |
72 | { | |
73 | return 1; | |
74 | } | |
75 | #endif | |
ce0dbbbb CW |
76 | |
77 | /* | |
78 | * control realtime throttling: | |
79 | * | |
80 | * /proc/sys/kernel/sched_rt_period_us | |
81 | * /proc/sys/kernel/sched_rt_runtime_us | |
82 | */ | |
cf4aebc2 CW |
83 | extern unsigned int sysctl_sched_rt_period; |
84 | extern int sysctl_sched_rt_runtime; | |
85 | ||
86 | #ifdef CONFIG_CFS_BANDWIDTH | |
87 | extern unsigned int sysctl_sched_cfs_bandwidth_slice; | |
88 | #endif | |
89 | ||
90 | #ifdef CONFIG_SCHED_AUTOGROUP | |
91 | extern unsigned int sysctl_sched_autogroup_enabled; | |
92 | #endif | |
93 | ||
ce0dbbbb CW |
94 | extern int sched_rr_timeslice; |
95 | ||
96 | extern int sched_rr_handler(struct ctl_table *table, int write, | |
97 | void __user *buffer, size_t *lenp, | |
98 | loff_t *ppos); | |
99 | ||
100 | extern int sched_rt_handler(struct ctl_table *table, int write, | |
cf4aebc2 CW |
101 | void __user *buffer, size_t *lenp, |
102 | loff_t *ppos); | |
103 | ||
104 | #endif /* _SCHED_SYSCTL_H */ |