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)25static 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