42 lines
1 KiB
C
42 lines
1 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_SCHED_STAT_H
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#define _LINUX_SCHED_STAT_H
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#include <linux/percpu.h>
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/*
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* Various counters maintained by the scheduler and fork(),
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* exposed via /proc, sys.c or used by drivers via these APIs.
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*
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* ( Note that all these values are aquired without locking,
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* so they can only be relied on in narrow circumstances. )
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*/
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extern unsigned long total_forks;
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extern int nr_threads;
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DECLARE_PER_CPU(unsigned long, process_counts);
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extern int nr_processes(void);
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extern unsigned long nr_running(void);
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extern bool single_task_running(void);
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extern unsigned long nr_iowait(void);
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extern unsigned long nr_iowait_cpu(int cpu);
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extern void get_iowait_load(unsigned long *nr_waiters, unsigned long *load);
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static inline int sched_info_on(void)
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{
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#ifdef CONFIG_SCHEDSTATS
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return 1;
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#elif defined(CONFIG_TASK_DELAY_ACCT)
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extern int delayacct_on;
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return delayacct_on;
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#else
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return 0;
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#endif
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}
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#ifdef CONFIG_SCHEDSTATS
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void force_schedstat_enabled(void);
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#endif
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#endif /* _LINUX_SCHED_STAT_H */
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