[PATCH 32/53] sched/headers: Split hotplug CPU interfaces out of <linux/sched.h> into <linux/sched/hotplug.h>

[Ingo Molnar]

Split the CPU hotplug scheduler APIs out of the common header.

Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 include/linux/sched.h         | 15 ---------------
 include/linux/sched/hotplug.h | 20 ++++++++++++++++++++
 2 files changed, 20 insertions(+), 15 deletions(-)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 1ffbf7b1ca06..cbee9d4398fa 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -196,15 +196,6 @@ extern void cpu_init (void);
 extern void trap_init(void);
 extern void update_process_times(int user);
 extern void scheduler_tick(void);
-extern int sched_cpu_starting(unsigned int cpu);
-extern int sched_cpu_activate(unsigned int cpu);
-extern int sched_cpu_deactivate(unsigned int cpu);
-
-#ifdef CONFIG_HOTPLUG_CPU
-extern int sched_cpu_dying(unsigned int cpu);
-#else
-# define sched_cpu_dying	NULL
-#endif
 
 #define	MAX_SCHEDULE_TIMEOUT	LONG_MAX
 extern signed long schedule_timeout(signed long timeout);
@@ -1494,12 +1485,6 @@ extern void sched_exec(void);
 #define sched_exec()   {}
 #endif
 
-#ifdef CONFIG_HOTPLUG_CPU
-extern void idle_task_exit(void);
-#else
-static inline void idle_task_exit(void) {}
-#endif
-
 extern int yield_to(struct task_struct *p, bool preempt);
 extern void set_user_nice(struct task_struct *p, long nice);
 extern int task_prio(const struct task_struct *p);
diff --git a/include/linux/sched/hotplug.h b/include/linux/sched/hotplug.h
index 34670ed24894..c608d3c1ddb8 100644
--- a/include/linux/sched/hotplug.h
+++ b/include/linux/sched/hotplug.h
@@ -3,4 +3,24 @@
 
 #include <linux/sched.h>
 
+/*
+ * Scheduler interfaces for hotplug CPU support:
+ */
+
+extern int sched_cpu_starting(unsigned int cpu);
+extern int sched_cpu_activate(unsigned int cpu);
+extern int sched_cpu_deactivate(unsigned int cpu);
+
+#ifdef CONFIG_HOTPLUG_CPU
+extern int sched_cpu_dying(unsigned int cpu);
+#else
+# define sched_cpu_dying	NULL
+#endif
+
+#ifdef CONFIG_HOTPLUG_CPU
+extern void idle_task_exit(void);
+#else
+static inline void idle_task_exit(void) {}
+#endif
+
 #endif /* _LINUX_SCHED_HOTPLUG_H */
-- 
2.7.4