[mirror_ubuntu-artful-kernel.git] / include / linux / kref.h

/*
 * kref.c - library routines for handling generic reference counted objects
 *
 * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
 * Copyright (C) 2004 IBM Corp.
 *
 * based on kobject.h which was:
 * Copyright (C) 2002-2003 Patrick Mochel <mochel@osdl.org>
 * Copyright (C) 2002-2003 Open Source Development Labs
 *
 * This file is released under the GPLv2.
 *
 */

#ifndef _KREF_H_
#define _KREF_H_

#ifdef __KERNEL__

#include <linux/types.h>
#include <asm/atomic.h>

struct kref {
	atomic_t refcount;
};

void kref_set(struct kref *kref, int num);
void kref_init(struct kref *kref);
void kref_get(struct kref *kref);
int kref_put(struct kref *kref, void (*release) (struct kref *kref));

#endif /* __KERNEL__ */
#endif /* _KREF_H_ */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* kref.c - library routines for handling generic reference counted objects
	3	*
	4	* Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
	5	* Copyright (C) 2004 IBM Corp.
	6	*
	7	* based on kobject.h which was:
	8	* Copyright (C) 2002-2003 Patrick Mochel <mochel@osdl.org>
	9	* Copyright (C) 2002-2003 Open Source Development Labs
	10	*
	11	* This file is released under the GPLv2.
	12	*
	13	*/
	14
	15	#ifndef _KREF_H_
	16	#define _KREF_H_
	17
	18	#ifdef __KERNEL__
	19
	20	#include <linux/types.h>
	21	#include <asm/atomic.h>
	22
	23	struct kref {
	24	atomic_t refcount;
	25	};
	26
41ca28ab	27	void kref_set(struct kref *kref, int num);
1da177e4 LT	28	void kref_init(struct kref *kref);
	29	void kref_get(struct kref *kref);
	30	int kref_put(struct kref kref, void (release) (struct kref *kref));
	31
	32	#endif /* __KERNEL__ */
	33	#endif /* _KREF_H_ */