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 
sched_info_on(void)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 */
35