[PATCH 1/2 UPDATED] klist: implement KLIST_INIT() and DEFINE_KLIST()

[Tejun Heo]

klist is missing static initializers and definition helper.  Add them.

Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
---
Updated to use _name.k_lock as advised.

Thanks.

include/linux/klist.h |    8 ++++++++
1 file changed, 8 insertions(+)

Index: work/include/linux/klist.h
===================================================================
--- work.orig/include/linux/klist.h
+++ work/include/linux/klist.h
@@ -25,6 +25,14 @@ struct klist {
	void			(*put)(struct klist_node *);
};

+#define KLIST_INIT(_name, _get, _put)					\
+	{ .k_lock	= __SPIN_LOCK_UNLOCKED(_name.k_lock),		\
+	  .k_list	= LIST_HEAD_INIT(_name.k_list),			\
+	  .get		= _get,						\
+	  .put		= _put, }
+
+#define DEFINE_KLIST(_name, _get, _put)					\
+	struct klist _name = KLIST_INIT(_name, _get, _put)

extern void klist_init(struct klist * k, void (*get)(struct klist_node *),
		       void (*put)(struct klist_node *));
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