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