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1 /*****************************************************************************\
2 * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
3 * Copyright (C) 2007 The Regents of the University of California.
4 * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
5 * Written by Brian Behlendorf <behlendorf1@llnl.gov>.
8 * This file is part of the SPL, Solaris Porting Layer.
9 * For details, see <http://zfsonlinux.org/>.
11 * The SPL is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
16 * The SPL is distributed in the hope that it will be useful, but WITHOUT
17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
21 * You should have received a copy of the GNU General Public License along
22 * with the SPL. If not, see <http://www.gnu.org/licenses/>.
23 \*****************************************************************************/
28 #include <linux/module.h>
29 #include <linux/time.h>
30 #include <sys/types.h>
31 #include <sys/timer.h>
33 #if defined(CONFIG_64BIT)
34 #define TIME_MAX INT64_MAX
35 #define TIME_MIN INT64_MIN
37 #define TIME_MAX INT32_MAX
38 #define TIME_MIN INT32_MIN
43 #define MICROSEC 1000000
44 #define NANOSEC 1000000000
46 #define MSEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MILLISEC))
47 #define NSEC2MSEC(n) ((n) / (NANOSEC / MILLISEC))
49 #define USEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MICROSEC))
50 #define NSEC2USEC(n) ((n) / (NANOSEC / MICROSEC))
52 #define NSEC2SEC(n) ((n) / (NANOSEC / SEC))
53 #define SEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / SEC))
55 static const int hz
= HZ
;
57 #define TIMESPEC_OVERFLOW(ts) \
58 ((ts)->tv_sec < TIME_MIN || (ts)->tv_sec > TIME_MAX)
61 gethrestime(timestruc_t
*now
)
63 *now
= current_kernel_time();
70 ts
= current_kernel_time();
74 static inline hrtime_t
78 getrawmonotonic(&now
);
79 return (((hrtime_t
)now
.tv_sec
* NSEC_PER_SEC
) + now
.tv_nsec
);
82 #endif /* _SPL_TIME_H */