diff options
| author | Ingo Molnar <mingo@kernel.org> | 2017-02-03 11:03:12 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-03-03 01:43:43 +0100 |
| commit | 3605df49556ebb7641d1f8ec2e7eeecf4dd734bf (patch) | |
| tree | bf4c1567d269ab0fb2baf6aeefc00540d7d1eacd /include/linux/sched/stat.h | |
| parent | 74444edaa0b2ef946e846d5ddf1ba90efcd7c200 (diff) | |
sched/headers: Move task statistics APIs from <linux/sched.h> to <linux/sched/stat.h>
There are a number of task statistics related variables and methods exported
via sched.h - collect them into <linux/sched/stat.h> and include it from
their usage sites.
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/sched/stat.h')
| -rw-r--r-- | include/linux/sched/stat.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/sched/stat.h b/include/linux/sched/stat.h index 30fe012aecb0..0d52ceb6d3ae 100644 --- a/include/linux/sched/stat.h +++ b/include/linux/sched/stat.h @@ -3,4 +3,22 @@ #include <linux/sched.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 aquired 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); +extern void get_iowait_load(unsigned long *nr_waiters, unsigned long *load); + #endif /* _LINUX_SCHED_STAT_H */ |