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 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 17 #include <asm-generic/mutex-xchg.h> 18 #endif 19