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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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32927393dc
Instead of having all the sysctl handlers deal with user pointers, which is rather hairy in terms of the BPF interaction, copy the input to and from userspace in common code. This also means that the strings are always NUL-terminated by the common code, making the API a little bit safer. As most handler just pass through the data to one of the common handlers a lot of the changes are mechnical. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Andrey Ignatov <rdna@fb.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
91 lines
2.9 KiB
C
91 lines
2.9 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 unsigned long sysctl_hung_task_check_interval_secs;
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extern int sysctl_hung_task_warnings;
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int proc_dohung_task_timeout_secs(struct ctl_table *table, int write,
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void *buffer, 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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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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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 __read_mostly unsigned int sysctl_sched_migration_cost;
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extern __read_mostly unsigned int sysctl_sched_nr_migrate;
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int sched_proc_update_handler(struct ctl_table *table, int write,
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void *buffer, size_t *length, loff_t *ppos);
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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_UCLAMP_TASK
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extern unsigned int sysctl_sched_uclamp_util_min;
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extern unsigned int sysctl_sched_uclamp_util_max;
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#endif
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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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int sched_rr_handler(struct ctl_table *table, int write, void *buffer,
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size_t *lenp, loff_t *ppos);
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int sched_rt_handler(struct ctl_table *table, int write, void *buffer,
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size_t *lenp, loff_t *ppos);
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int sysctl_sched_uclamp_handler(struct ctl_table *table, int write,
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void *buffer, size_t *lenp, loff_t *ppos);
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int sysctl_numa_balancing(struct ctl_table *table, int write, void *buffer,
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size_t *lenp, loff_t *ppos);
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int sysctl_schedstats(struct ctl_table *table, int write, void *buffer,
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size_t *lenp, loff_t *ppos);
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#if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL)
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extern unsigned int sysctl_sched_energy_aware;
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int sched_energy_aware_handler(struct ctl_table *table, int write,
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void *buffer, size_t *lenp, loff_t *ppos);
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#endif
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#endif /* _LINUX_SCHED_SYSCTL_H */
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