/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_SCHED_STAT_H #define _LINUX_SCHED_STAT_H #include <linux/percpu.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 aquired 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 long nr_running(void); extern bool single_task_running(void); extern unsigned long nr_iowait(void); extern unsigned long nr_iowait_cpu(int cpu); extern void get_iowait_load(unsigned long *nr_waiters, unsigned long *load); static inline int sched_info_on(void) { #ifdef CONFIG_SCHEDSTATS return 1; #elif defined(CONFIG_TASK_DELAY_ACCT) extern int delayacct_on; return delayacct_on; #else return 0; #endif } #ifdef CONFIG_SCHEDSTATS void force_schedstat_enabled(void); #endif #endif /* _LINUX_SCHED_STAT_H */