2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1988, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following 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 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 static char sccsid[] = "@(#)subr.c 8.1 (Berkeley) 6/6/93";
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
41 #include <sys/param.h>
46 #include <sys/ktrace.h>
52 void timevaladd(struct timeval *, struct timeval *);
53 void timevalsub(struct timeval *, struct timeval *);
54 void timevalfix(struct timeval *);
64 facs |= KTRFAC_SYSCALL | KTRFAC_SYSRET;
70 facs |= KTRFAC_FAULT | KTRFAC_FAULTEND;
76 facs |= KTRFAC_CAPFAIL;
82 facs |= KTRFAC_STRUCT;
91 facs |= KTRFAC_SYSCTL;
105 timevaladd(struct timeval *t1, struct timeval *t2)
107 t1->tv_sec += t2->tv_sec;
108 t1->tv_usec += t2->tv_usec;
113 timevalsub(struct timeval *t1, struct timeval *t2)
115 t1->tv_sec -= t2->tv_sec;
116 t1->tv_usec -= t2->tv_usec;
121 timevalfix(struct timeval *t1)
123 if (t1->tv_usec < 0) {
125 t1->tv_usec += 1000000;
127 if (t1->tv_usec >= 1000000) {
129 t1->tv_usec -= 1000000;