include/linux/sched/stat.h

Source file repositories/reference/linux-study-clean/include/linux/sched/stat.h

File Facts

System
Linux kernel
Corpus path
include/linux/sched/stat.h
Extension
.h
Size
887 bytes
Lines
35
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

#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 */

Annotation

Implementation Notes