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 */
35
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.