179 lines
5.8 KiB
C
179 lines
5.8 KiB
C
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#ifndef _SCHED_SYSCTL_H
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#define _SCHED_SYSCTL_H
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#ifdef CONFIG_DETECT_HUNG_TASK
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extern int sysctl_hung_task_check_count;
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extern unsigned int sysctl_hung_task_panic;
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extern unsigned long sysctl_hung_task_timeout_secs;
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extern int sysctl_hung_task_warnings;
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extern int proc_dohung_task_timeout_secs(struct ctl_table *table, int write,
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void __user *buffer,
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size_t *lenp, loff_t *ppos);
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#else
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/* Avoid need for ifdefs elsewhere in the code */
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enum { sysctl_hung_task_timeout_secs = 0 };
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#endif
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/*
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* Default maximum number of active map areas, this limits the number of vmas
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* per mm struct. Users can overwrite this number by sysctl but there is a
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* problem.
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*
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* When a program's coredump is generated as ELF format, a section is created
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* per a vma. In ELF, the number of sections is represented in unsigned short.
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* This means the number of sections should be smaller than 65535 at coredump.
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* Because the kernel adds some informative sections to a image of program at
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* generating coredump, we need some margin. The number of extra sections is
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* 1-3 now and depends on arch. We use "5" as safe margin, here.
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*
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* ELF extended numbering allows more than 65535 sections, so 16-bit bound is
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* not a hard limit any more. Although some userspace tools can be surprised by
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* that.
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*/
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#define MAPCOUNT_ELF_CORE_MARGIN (5)
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#define DEFAULT_MAX_MAP_COUNT (USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN)
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extern int sysctl_max_map_count;
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extern unsigned int sysctl_sched_latency;
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extern unsigned int sysctl_sched_min_granularity;
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extern unsigned int sysctl_sched_wakeup_granularity;
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extern unsigned int sysctl_sched_child_runs_first;
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extern unsigned int sysctl_sched_wake_to_idle;
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extern unsigned int sysctl_sched_wakeup_load_threshold;
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extern unsigned int sysctl_sched_window_stats_policy;
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extern unsigned int sysctl_sched_account_wait_time;
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extern unsigned int sysctl_sched_ravg_hist_size;
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extern unsigned int sysctl_sched_cpu_high_irqload;
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extern unsigned int sysctl_sched_freq_account_wait_time;
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extern unsigned int sysctl_sched_migration_fixup;
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extern unsigned int sysctl_sched_heavy_task_pct;
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extern unsigned int sysctl_sched_enable_power_aware;
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#if defined(CONFIG_SCHED_FREQ_INPUT) || defined(CONFIG_SCHED_HMP)
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extern unsigned int sysctl_sched_init_task_load_pct;
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#endif
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#ifdef CONFIG_SCHED_FREQ_INPUT
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extern int sysctl_sched_freq_inc_notify;
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extern int sysctl_sched_freq_dec_notify;
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#endif
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#ifdef CONFIG_SCHED_HMP
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extern unsigned int sysctl_sched_spill_nr_run;
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extern unsigned int sysctl_sched_spill_load_pct;
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extern unsigned int sysctl_sched_upmigrate_pct;
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extern unsigned int sysctl_sched_downmigrate_pct;
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extern int sysctl_sched_upmigrate_min_nice;
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extern unsigned int sysctl_sched_boost;
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extern unsigned int sysctl_early_detection_duration;
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#ifdef CONFIG_SCHED_QHMP
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extern unsigned int sysctl_sched_min_runtime;
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extern unsigned int sysctl_sched_small_task_pct;
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#else
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extern unsigned int sysctl_sched_select_prev_cpu_us;
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extern unsigned int sysctl_sched_enable_colocation;
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extern unsigned int sysctl_sched_restrict_cluster_spill;
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#if defined(CONFIG_SCHED_FREQ_INPUT)
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extern unsigned int sysctl_sched_new_task_windows;
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#endif
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#endif
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#else /* CONFIG_SCHED_HMP */
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#define sysctl_sched_enable_hmp_task_placement 0
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#endif /* CONFIG_SCHED_HMP */
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enum sched_tunable_scaling {
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SCHED_TUNABLESCALING_NONE,
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SCHED_TUNABLESCALING_LOG,
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SCHED_TUNABLESCALING_LINEAR,
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SCHED_TUNABLESCALING_END,
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};
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extern enum sched_tunable_scaling sysctl_sched_tunable_scaling;
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extern unsigned int sysctl_numa_balancing_scan_delay;
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extern unsigned int sysctl_numa_balancing_scan_period_min;
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extern unsigned int sysctl_numa_balancing_scan_period_max;
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extern unsigned int sysctl_numa_balancing_scan_size;
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#ifdef CONFIG_SCHED_DEBUG
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extern unsigned int sysctl_sched_migration_cost;
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extern unsigned int sysctl_sched_nr_migrate;
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extern unsigned int sysctl_sched_time_avg;
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extern unsigned int sysctl_timer_migration;
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extern unsigned int sysctl_sched_shares_window;
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int sched_proc_update_handler(struct ctl_table *table, int write,
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void __user *buffer, size_t *length,
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loff_t *ppos);
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#endif
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extern int sched_migrate_notify_proc_handler(struct ctl_table *table,
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int write, void __user *buffer, size_t *lenp, loff_t *ppos);
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extern int sched_hmp_proc_update_handler(struct ctl_table *table,
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int write, void __user *buffer, size_t *lenp, loff_t *ppos);
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extern int sched_boost_handler(struct ctl_table *table, int write,
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void __user *buffer, size_t *lenp, loff_t *ppos);
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extern int sched_window_update_handler(struct ctl_table *table,
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int write, void __user *buffer, size_t *lenp, loff_t *ppos);
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#ifdef CONFIG_SCHED_DEBUG
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static inline unsigned int get_sysctl_timer_migration(void)
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{
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return sysctl_timer_migration;
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}
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#else
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static inline unsigned int get_sysctl_timer_migration(void)
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{
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return 1;
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}
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#endif
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/*
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* control realtime throttling:
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*
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* /proc/sys/kernel/sched_rt_period_us
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* /proc/sys/kernel/sched_rt_runtime_us
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*/
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extern unsigned int sysctl_sched_rt_period;
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extern int sysctl_sched_rt_runtime;
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#ifdef CONFIG_CFS_BANDWIDTH
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extern unsigned int sysctl_sched_cfs_bandwidth_slice;
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#endif
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#ifdef CONFIG_SCHED_AUTOGROUP
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extern unsigned int sysctl_sched_autogroup_enabled;
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#endif
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#ifdef CONFIG_SCHEDSTATS
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extern unsigned int sysctl_sched_latency_panic_threshold;
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extern unsigned int sysctl_sched_latency_warn_threshold;
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extern int sched_max_latency_sysctl(struct ctl_table *table, int write,
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void __user *buffer, size_t *lenp,
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loff_t *ppos);
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#endif
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extern int sched_rr_timeslice;
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extern int sched_rr_handler(struct ctl_table *table, int write,
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void __user *buffer, size_t *lenp,
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loff_t *ppos);
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extern int sched_rt_handler(struct ctl_table *table, int write,
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void __user *buffer, size_t *lenp,
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loff_t *ppos);
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extern int sysctl_numa_balancing(struct ctl_table *table, int write,
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void __user *buffer, size_t *lenp,
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loff_t *ppos);
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#endif /* _SCHED_SYSCTL_H */
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