Commit 75a040ff authored Apr 01, 2018 by Alexey Dobriyan Committed by Ingo Molnar Jun 21, 2018

locking/refcounts: Include fewer headers in <linux/refcount.h>



Debloat <linux/refcount.h>'s dependencies:

- <linux/kernel.h> is not needed, but <linux/compiler.h> is.
- <linux/mutex.h> is not needed, only a forward declaration of "struct mutex".
- <linux/spinlock.h> is not needed, <linux/spinlock_types.h> is enough.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Link: https://lkml.kernel.org/lkml/20180331220036.GA7676@avx2


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent 7cc7eaad

arch/x86/include/asm/refcount.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -5,6 +5,7 @@
		* PaX/grsecurity.
		*/
		#include <linux/refcount.h>
		#include <asm/bug.h>

		/*
		* This is the first portion of the refcount error handling, which lives in

include/linux/refcount.h

+4 −3

Original line number	Diff line number	Diff line
		@@ -3,9 +3,10 @@
		#define _LINUX_REFCOUNT_H

		#include <linux/atomic.h>
		#include <linux/mutex.h>
		#include <linux/spinlock.h>
		#include <linux/kernel.h>
		#include <linux/compiler.h>
		#include <linux/spinlock_types.h>

		struct mutex;

		/**
		* struct refcount_t - variant of atomic_t specialized for reference counts

lib/refcount.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -35,7 +35,9 @@
		*
		*/

		#include <linux/mutex.h>
		#include <linux/refcount.h>
		#include <linux/spinlock.h>
		#include <linux/bug.h>

		#ifdef CONFIG_REFCOUNT_FULL

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