Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef _LINUX_SCHED_STAT_H
2#define _LINUX_SCHED_STAT_H
3
4#include <linux/percpu.h>
5
6/*
7 * Various counters maintained by the scheduler and fork(),
8 * exposed via /proc, sys.c or used by drivers via these APIs.
9 *
10 * ( Note that all these values are aquired without locking,
11 * so they can only be relied on in narrow circumstances. )
12 */
13
14extern unsigned long total_forks;
15extern int nr_threads;
16DECLARE_PER_CPU(unsigned long, process_counts);
17extern int nr_processes(void);
18extern unsigned long nr_running(void);
19extern bool single_task_running(void);
20extern unsigned long nr_iowait(void);
21extern unsigned long nr_iowait_cpu(int cpu);
22extern void get_iowait_load(unsigned long *nr_waiters, unsigned long *load);
23
24static inline int sched_info_on(void)
25{
26#ifdef CONFIG_SCHEDSTATS
27 return 1;
28#elif defined(CONFIG_TASK_DELAY_ACCT)
29 extern int delayacct_on;
30 return delayacct_on;
31#else
32 return 0;
33#endif
34}
35
36#ifdef CONFIG_SCHEDSTATS
37void force_schedstat_enabled(void);
38#endif
39
40#endif /* _LINUX_SCHED_STAT_H */