projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 03441a34 IM |
2 | #ifndef _LINUX_SCHED_STAT_H |
| 3 | #define _LINUX_SCHED_STAT_H | |
| 4 | ||
| dc199539 | 5 | #include <linux/percpu.h> |
| 03441a34 | 6 | |
| 3605df49 IM |
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 | ||
| a2d7a746 IM |
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 | ||
| 03441a34 | 41 | #endif /* _LINUX_SCHED_STAT_H */ |