1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2007 Attilio Rao <[email protected]> 5 * Copyright (c) 2001 Jason Evans <[email protected]> 6 * Copyright (C) 2017-2021 THL A29 Limited, a Tencent company. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice(s), this list of conditions and the following disclaimer as 14 * the first lines of this file unmodified other than the possible 15 * addition of one or more copyright notices. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice(s), this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY 21 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 23 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY 24 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 26 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH 30 * DAMAGE. 31 * 32 * $FreeBSD$ 33 */ 34 35 #ifndef _FSTACK_SYS_SX_H_ 36 #define _FSTACK_SYS_SX_H_ 37 38 #include_next <sys/sx.h> 39 40 #define sx_try_slock_int(sx) (1) 41 #define sx_try_xlock_int(sx) (1) 42 43 #define _sx_slock_int(sx, arg) (0) 44 #define _sx_sunlock_int(sx) do {} while(0) 45 46 #endif /* _FSTACK_SYS_SX_H_ */ 47