| /* 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 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 long nr_running(void); |
| extern bool single_task_running(void); |
| extern unsigned long nr_iowait(void); |
| extern unsigned long nr_iowait_cpu(int cpu); |
| |
| 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 */ |
