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