1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2019, 2020 Jeffrey Roberson <jeff@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice unmodified, this list of conditions, and the following 11 * disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 */ 28 29 #ifndef _SYS__SMR_H_ 30 #define _SYS__SMR_H_ 31 32 typedef uint32_t smr_seq_t; 33 typedef int32_t smr_delta_t; 34 typedef struct smr *smr_t; 35 36 #define SMR_ENTERED(smr) \ 37 (curthread->td_critnest != 0 && zpcpu_get((smr))->c_seq != SMR_SEQ_INVALID) 38 39 #define SMR_ASSERT_ENTERED(smr) \ 40 KASSERT(SMR_ENTERED(smr), ("Not in smr section")) 41 42 #define SMR_ASSERT_NOT_ENTERED(smr) \ 43 KASSERT(!SMR_ENTERED(smr), ("In smr section.")); 44 45 #define SMR_ASSERT(ex, fn) \ 46 KASSERT((ex), (fn ": Assertion " #ex " failed at %s:%d", __FILE__, __LINE__)) 47 48 #endif /* __SYS_SMR_H_ */ 49