linux-kernel - [PATCH 1/4] convert task_struct allocator macros to inline functions

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Date:	Sat, 27 Dec 2008 14:17:12 +0900
From:	Akinobu Mita <akinobu.mita@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH 1/4] convert task_struct allocator macros to inline
	functions

Usually inline function is better than function-like macro.

Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: "H. Peter Anvin" <hpa@...or.com>
Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>
---
 kernel/fork.c |   14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

Index: 2.6/kernel/fork.c
===================================================================
--- 2.6.orig/kernel/fork.c
+++ 2.6/kernel/fork.c
@@ -92,9 +92,19 @@ int nr_processes(void)
 }
 
 #ifndef __HAVE_ARCH_TASK_STRUCT_ALLOCATOR
-# define alloc_task_struct()	kmem_cache_alloc(task_struct_cachep, GFP_KERNEL)
-# define free_task_struct(tsk)	kmem_cache_free(task_struct_cachep, (tsk))
+
 static struct kmem_cache *task_struct_cachep;
+
+static inline struct task_struct *alloc_task_struct(void)
+{
+	return kmem_cache_alloc(task_struct_cachep, GFP_KERNEL);
+}
+
+static inline void free_task_struct(struct task_struct *tsk)
+{
+	kmem_cache_free(task_struct_cachep, tsk);
+}
+
 #endif
 
 #ifndef __HAVE_ARCH_THREAD_INFO_ALLOCATOR
--
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