linux-kernel - [PATCH] headers: linux/mutex.h: drop linkage.h

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Message-ID: <582b3892-4e4c-06b2-a368-5c2d439de7fc@infradead.org>
Date:   Sat, 24 Feb 2018 21:22:12 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     LKML <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>
Subject: [PATCH] headers: linux/mutex.h: drop linkage.h

From: Randy Dunlap <rdunlap@...radead.org>

<linux/mutex.h> does not use nor need <linux/linkage.h>, so drop that
one header file from mutex.h.

<linux/mutex.h> is currently #included in around 1250 C source files
(oops, I didn't count other header files that #include it), making it
the 27th most-used header file.

Build tested on i386 and x86_64 * (allnoconfig, tiny.config, defconfig,
allyesconfig, and allmodconfig) and x64_64 allmodconfig + SMP=disabled.

Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
---
Ingo/Thomas, please include this in tip.git for more thorough testing.

 include/linux/mutex.h |    1 -
 1 file changed, 1 deletion(-)

--- linux.orig/include/linux/mutex.h
+++ linux.next/include/linux/mutex.h
@@ -14,7 +14,6 @@
 #include <asm/current.h>
 #include <linux/list.h>
 #include <linux/spinlock_types.h>
-#include <linux/linkage.h>
 #include <linux/lockdep.h>
 #include <linux/atomic.h>
 #include <asm/processor.h>