[linux-2.6-block.git] / include / linux / sched / stat.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_SCHED_STAT_H
#define _LINUX_SCHED_STAT_H

#include <linux/percpu.h>
#include <linux/kconfig.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 acquired 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 int nr_running(void);
extern bool single_task_running(void);
extern unsigned int nr_iowait(void);
extern unsigned int nr_iowait_cpu(int cpu);

static inline int sched_info_on(void)
{
	return IS_ENABLED(CONFIG_SCHED_INFO);
}

#ifdef CONFIG_SCHEDSTATS
void force_schedstat_enabled(void);
#endif

#endif /* _LINUX_SCHED_STAT_H */
Commit	Line	Data
	1	/* SPDX-License-Identifier: GPL-2.0 */
	2	#ifndef _LINUX_SCHED_STAT_H
	3	#define _LINUX_SCHED_STAT_H
	4
	5	#include <linux/percpu.h>
	6	#include <linux/kconfig.h>
	7
	8	/*
	9	* Various counters maintained by the scheduler and fork(),
	10	* exposed via /proc, sys.c or used by drivers via these APIs.
	11	*
	12	* ( Note that all these values are acquired without locking,
	13	* so they can only be relied on in narrow circumstances. )
	14	*/
	15
	16	extern unsigned long total_forks;
	17	extern int nr_threads;
	18	DECLARE_PER_CPU(unsigned long, process_counts);
	19	extern int nr_processes(void);
	20	extern unsigned int nr_running(void);
	21	extern bool single_task_running(void);
	22	extern unsigned int nr_iowait(void);
	23	extern unsigned int nr_iowait_cpu(int cpu);
	24
	25	static inline int sched_info_on(void)
	26	{
	27	return IS_ENABLED(CONFIG_SCHED_INFO);
	28	}
	29
	30	#ifdef CONFIG_SCHEDSTATS
	31	void force_schedstat_enabled(void);
	32	#endif
	33
	34	#endif /* _LINUX_SCHED_STAT_H */