| Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| Ingo Molnar | 03441a3 | 2017-02-08 18:51:35 +0100 | [diff] [blame] | 2 | #ifndef _LINUX_SCHED_STAT_H |
| 3 | #define _LINUX_SCHED_STAT_H |
| 4 | |
| Ingo Molnar | dc19953 | 2017-02-08 18:51:57 +0100 | [diff] [blame] | 5 | #include <linux/percpu.h> |
| Ingo Molnar | 03441a3 | 2017-02-08 18:51:35 +0100 | [diff] [blame] | 6 | |
| Ingo Molnar | 3605df49 | 2017-02-03 11:03:12 +0100 | [diff] [blame] | 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 aquired 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 | extern void get_iowait_load(unsigned long *nr_waiters, unsigned long *load); |
| 24 | |
| Ingo Molnar | a2d7a74 | 2017-02-05 12:07:04 +0100 | [diff] [blame] | 25 | static inline int sched_info_on(void) |
| 26 | { |
| 27 | #ifdef CONFIG_SCHEDSTATS |
| 28 | return 1; |
| 29 | #elif defined(CONFIG_TASK_DELAY_ACCT) |
| 30 | extern int delayacct_on; |
| 31 | return delayacct_on; |
| 32 | #else |
| 33 | return 0; |
| 34 | #endif |
| 35 | } |
| 36 | |
| 37 | #ifdef CONFIG_SCHEDSTATS |
| 38 | void force_schedstat_enabled(void); |
| 39 | #endif |
| 40 | |
| Ingo Molnar | 03441a3 | 2017-02-08 18:51:35 +0100 | [diff] [blame] | 41 | #endif /* _LINUX_SCHED_STAT_H */ |