linux-kernel - [PATCH 18/53] sched/headers: Move more mm_struct related functionality from <linux/sched.h> to <linux/sched/mm.h>

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Date:   Wed,  8 Feb 2017 19:44:49 +0100
From:   Ingo Molnar <mingo@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Mike Galbraith <efault@....de>,
        Oleg Nesterov <oleg@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH 18/53] sched/headers: Move more mm_struct related functionality from <linux/sched.h> to <linux/sched/mm.h>

Neither the mmap_layout nor the mm_update_next_owner() methods need to be
in <linux/sched.h> - move them to the more appropriate <linux/sched/mm.h> header.

Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Mike Galbraith <efault@....de>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 include/linux/sched.h    | 21 ---------------------
 include/linux/sched/mm.h | 21 +++++++++++++++++++++
 2 files changed, 21 insertions(+), 21 deletions(-)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index f310c8e9c968..8f2ae1e11e73 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -313,19 +313,6 @@ void __noreturn do_task_dead(void);
 
 struct nsproxy;
 
-#ifdef CONFIG_MMU
-extern void arch_pick_mmap_layout(struct mm_struct *mm);
-extern unsigned long
-arch_get_unmapped_area(struct file *, unsigned long, unsigned long,
-		       unsigned long, unsigned long);
-extern unsigned long
-arch_get_unmapped_area_topdown(struct file *filp, unsigned long addr,
-			  unsigned long len, unsigned long pgoff,
-			  unsigned long flags);
-#else
-static inline void arch_pick_mmap_layout(struct mm_struct *mm) {}
-#endif
-
 /**
  * struct prev_cputime - snaphsot of system and user cputime
  * @utime: time spent in user mode
@@ -2276,12 +2263,4 @@ static inline void inc_syscw(struct task_struct *tsk)
 #define TASK_SIZE_OF(tsk)	TASK_SIZE
 #endif
 
-#ifdef CONFIG_MEMCG
-extern void mm_update_next_owner(struct mm_struct *mm);
-#else
-static inline void mm_update_next_owner(struct mm_struct *mm)
-{
-}
-#endif /* CONFIG_MEMCG */
-
 #endif
diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h
index 175b61f2672a..8fd3152bfeaa 100644
--- a/include/linux/sched/mm.h
+++ b/include/linux/sched/mm.h
@@ -57,4 +57,25 @@ extern struct mm_struct *mm_access(struct task_struct *task, unsigned int mode);
 /* Remove the current tasks stale references to the old mm_struct */
 extern void mm_release(struct task_struct *, struct mm_struct *);
 
+#ifdef CONFIG_MEMCG
+extern void mm_update_next_owner(struct mm_struct *mm);
+#else
+static inline void mm_update_next_owner(struct mm_struct *mm)
+{
+}
+#endif /* CONFIG_MEMCG */
+
+#ifdef CONFIG_MMU
+extern void arch_pick_mmap_layout(struct mm_struct *mm);
+extern unsigned long
+arch_get_unmapped_area(struct file *, unsigned long, unsigned long,
+		       unsigned long, unsigned long);
+extern unsigned long
+arch_get_unmapped_area_topdown(struct file *filp, unsigned long addr,
+			  unsigned long len, unsigned long pgoff,
+			  unsigned long flags);
+#else
+static inline void arch_pick_mmap_layout(struct mm_struct *mm) {}
+#endif
+
 #endif /* _LINUX_SCHED_MM_H */
-- 
2.7.4