344d6114c7
If sysctl_sched_prefer_spread is enabled, then tasks would be freely migrated to idle cpus within same cluster to reduce runnables. By default, the feature is disabled. User can trigger feature with: echo 1 > /proc/sys/kernel/sched_prefer_spread Aggressively spread tasks with in little cluster. echo 2 > /proc/sys/kernel/sched_prefer_spread Aggressively spread tasks with in little cluster as well as big cluster, but not between big and little. Change-Id: I0a4d87bd17de3525548765472e6f388a9970f13c Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org> [render: minor fixups] Signed-off-by: Zachariah Kennedy <zkennedy87@gmail.com> Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
154 lines
5.3 KiB
C
154 lines
5.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_SCHED_SYSCTL_H
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#define _LINUX_SCHED_SYSCTL_H
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#include <linux/types.h>
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struct ctl_table;
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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 sysctl_hung_task_selective_monitoring;
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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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#define MAX_CLUSTERS 3
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/* MAX_MARGIN_LEVELS should be one less than MAX_CLUSTERS */
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#define MAX_MARGIN_LEVELS (MAX_CLUSTERS - 1)
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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_sync_hint_enable;
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extern unsigned int sysctl_sched_cstate_aware;
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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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#ifdef CONFIG_SCHED_WALT
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extern unsigned int sysctl_sched_capacity_margin_up[MAX_MARGIN_LEVELS];
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extern unsigned int sysctl_sched_capacity_margin_down[MAX_MARGIN_LEVELS];
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extern unsigned int sysctl_sched_user_hint;
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extern const int sched_user_hint_max;
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extern unsigned int sysctl_sched_cpu_high_irqload;
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extern unsigned int sysctl_sched_boost;
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extern unsigned int sysctl_sched_group_upmigrate_pct;
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extern unsigned int sysctl_sched_group_downmigrate_pct;
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extern unsigned int sysctl_sched_conservative_pl;
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extern unsigned int sysctl_sched_many_wakeup_threshold;
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extern unsigned int sysctl_sched_walt_rotate_big_tasks;
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extern unsigned int sysctl_sched_min_task_util_for_boost;
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extern unsigned int sysctl_sched_min_task_util_for_colocation;
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extern unsigned int sysctl_sched_asym_cap_sibling_freq_match_pct;
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extern unsigned int sysctl_sched_coloc_downmigrate_ns;
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extern unsigned int sysctl_sched_task_unfilter_period;
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extern unsigned int sysctl_sched_busy_hyst_enable_cpus;
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extern unsigned int sysctl_sched_busy_hyst;
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extern unsigned int sysctl_sched_coloc_busy_hyst_enable_cpus;
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extern unsigned int sysctl_sched_coloc_busy_hyst;
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extern unsigned int sysctl_sched_coloc_busy_hyst_max_ms;
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extern unsigned int sysctl_sched_window_stats_policy;
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extern unsigned int sysctl_sched_ravg_window_nr_ticks;
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extern unsigned int sysctl_sched_dynamic_ravg_window_enable;
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extern unsigned int sysctl_sched_prefer_spread;
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extern int
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walt_proc_group_thresholds_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
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walt_proc_user_hint_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
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sched_ravg_window_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_updown_migrate_handler(struct ctl_table *table,
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int write, void __user *buffer,
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size_t *lenp, loff_t *ppos);
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#endif
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#if defined(CONFIG_PREEMPT_TRACER) || defined(CONFIG_DEBUG_PREEMPT)
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extern unsigned int sysctl_preemptoff_tracing_threshold_ns;
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#endif
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#if defined(CONFIG_PREEMPTIRQ_EVENTS) && defined(CONFIG_IRQSOFF_TRACER) && \
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!defined(CONFIG_PROVE_LOCKING)
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extern unsigned int sysctl_irqsoff_tracing_threshold_ns;
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#endif
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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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extern __read_mostly unsigned int sysctl_sched_migration_cost;
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#ifdef CONFIG_SCHED_DEBUG
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extern __read_mostly unsigned int sysctl_sched_nr_migrate;
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extern __read_mostly unsigned int sysctl_sched_time_avg;
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#endif
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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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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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/*
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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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extern int sysctl_sched_rr_timeslice;
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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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extern int sysctl_schedstats(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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#define LIB_PATH_LENGTH 512
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extern char sched_lib_name[LIB_PATH_LENGTH];
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extern unsigned int sched_lib_mask_force;
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extern bool is_sched_lib_based_app(pid_t pid);
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#endif /* _LINUX_SCHED_SYSCTL_H */
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