[linux-2.6-block.git] / arch / arc / include / asm / mutex.h

/*
 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

/*
 * xchg() based mutex fast path maintains a state of 0 or 1, as opposed to
 * atomic dec based which can "count" any number of lock contenders.
 * This ideally needs to be fixed in core, but for now switching to dec ver.
 */
#if defined(CONFIG_SMP) && (CONFIG_NR_CPUS > 2)
#include <asm-generic/mutex-dec.h>
#else
#include <asm-generic/mutex-xchg.h>
#endif
Commit	Line	Data
6e35fa2d VG	1	/*
	2	* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*/
	8
41195d23 VG	9	/*
	10	* xchg() based mutex fast path maintains a state of 0 or 1, as opposed to
	11	* atomic dec based which can "count" any number of lock contenders.
	12	* This ideally needs to be fixed in core, but for now switching to dec ver.
	13	*/
	14	#if defined(CONFIG_SMP) && (CONFIG_NR_CPUS > 2)
	15	#include <asm-generic/mutex-dec.h>
	16	#else
6e35fa2d	17	#include <asm-generic/mutex-xchg.h>
41195d23	18	#endif