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authorIngo Molnar <mingo@kernel.org>2017-02-03 13:03:12 +0300
committerIngo Molnar <mingo@kernel.org>2017-03-03 03:43:43 +0300
commit3605df49556ebb7641d1f8ec2e7eeecf4dd734bf (patch)
treebf4c1567d269ab0fb2baf6aeefc00540d7d1eacd
parent74444edaa0b2ef946e846d5ddf1ba90efcd7c200 (diff)
downloadlinux-3605df49556ebb7641d1f8ec2e7eeecf4dd734bf.tar.xz
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>
-rw-r--r--arch/s390/appldata/appldata_base.c1
-rw-r--r--include/linux/sched.h10
-rw-r--r--include/linux/sched/stat.h18
3 files changed, 19 insertions, 10 deletions
diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
index 5a8dfa22da7c..ef3fb1b9201f 100644
--- a/arch/s390/appldata/appldata_base.c
+++ b/arch/s390/appldata/appldata_base.c
@@ -12,6 +12,7 @@
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/module.h>
+#include <linux/sched/stat.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/errno.h>
diff --git a/include/linux/sched.h b/include/linux/sched.h
index dbc3ff04750a..415baf253517 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -46,16 +46,6 @@ struct nameidata;
struct signal_struct;
struct sighand_struct;
-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);
-
#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
extern void cpu_load_update_nohz_start(void);
extern void cpu_load_update_nohz_stop(void);
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 */