Line data    Source code

       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             : 
       7             : /*
       8             :  * Various counters maintained by the scheduler and fork(),
       9             :  * exposed via /proc, sys.c or used by drivers via these APIs.
      10             :  *
      11             :  * ( Note that all these values are acquired without locking,
      12             :  *   so they can only be relied on in narrow circumstances. )
      13             :  */
      14             : 
      15             : extern unsigned long total_forks;
      16             : extern int nr_threads;
      17             : DECLARE_PER_CPU(unsigned long, process_counts);
      18             : extern int nr_processes(void);
      19             : extern unsigned long nr_running(void);
      20             : extern bool single_task_running(void);
      21             : extern unsigned long nr_iowait(void);
      22             : extern unsigned long nr_iowait_cpu(int cpu);
      23             : 
      24       63671 : static inline int sched_info_on(void)
      25             : {
      26             : #ifdef CONFIG_SCHEDSTATS
      27             :         return 1;
      28             : #elif defined(CONFIG_TASK_DELAY_ACCT)
      29       63671 :         extern int delayacct_on;
      30       63671 :         return delayacct_on;
      31             : #else
      32             :         return 0;
      33             : #endif
      34             : }
      35             : 
      36             : #ifdef CONFIG_SCHEDSTATS
      37             : void force_schedstat_enabled(void);
      38             : #endif
      39             : 
      40             : #endif /* _LINUX_SCHED_STAT_H */