1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef _LINUX_SCHED_STAT_H 3*4882a593Smuzhiyun #define _LINUX_SCHED_STAT_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #include <linux/percpu.h> 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun /* 8*4882a593Smuzhiyun * Various counters maintained by the scheduler and fork(), 9*4882a593Smuzhiyun * exposed via /proc, sys.c or used by drivers via these APIs. 10*4882a593Smuzhiyun * 11*4882a593Smuzhiyun * ( Note that all these values are acquired without locking, 12*4882a593Smuzhiyun * so they can only be relied on in narrow circumstances. ) 13*4882a593Smuzhiyun */ 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun extern unsigned long total_forks; 16*4882a593Smuzhiyun extern int nr_threads; 17*4882a593Smuzhiyun DECLARE_PER_CPU(unsigned long, process_counts); 18*4882a593Smuzhiyun extern int nr_processes(void); 19*4882a593Smuzhiyun extern unsigned long nr_running(void); 20*4882a593Smuzhiyun extern bool single_task_running(void); 21*4882a593Smuzhiyun extern unsigned long nr_iowait(void); 22*4882a593Smuzhiyun extern unsigned long nr_iowait_cpu(int cpu); 23*4882a593Smuzhiyun sched_info_on(void)24*4882a593Smuzhiyunstatic inline int sched_info_on(void) 25*4882a593Smuzhiyun { 26*4882a593Smuzhiyun #ifdef CONFIG_SCHEDSTATS 27*4882a593Smuzhiyun return 1; 28*4882a593Smuzhiyun #elif defined(CONFIG_TASK_DELAY_ACCT) 29*4882a593Smuzhiyun extern int delayacct_on; 30*4882a593Smuzhiyun return delayacct_on; 31*4882a593Smuzhiyun #else 32*4882a593Smuzhiyun return 0; 33*4882a593Smuzhiyun #endif 34*4882a593Smuzhiyun } 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun #ifdef CONFIG_SCHEDSTATS 37*4882a593Smuzhiyun void force_schedstat_enabled(void); 38*4882a593Smuzhiyun #endif 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun #endif /* _LINUX_SCHED_STAT_H */ 41