119 lines
3 KiB
C
119 lines
3 KiB
C
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/*
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* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
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* Copyright (C) 2007 The Regents of the University of California.
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* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
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* UCRL-CODE-235197
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*
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* This file is part of the SPL, Solaris Porting Layer.
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* For details, see <http://zfsonlinux.org/>.
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*
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* The SPL is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* The SPL is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with the SPL. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _SPL_TIME_H
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#define _SPL_TIME_H
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#include <linux/module.h>
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#include <linux/time.h>
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#include <sys/types.h>
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#include <sys/timer.h>
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#if defined(CONFIG_64BIT)
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#define TIME_MAX INT64_MAX
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#define TIME_MIN INT64_MIN
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#else
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#define TIME_MAX INT32_MAX
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#define TIME_MIN INT32_MIN
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#endif
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#define SEC 1
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#define MILLISEC 1000
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#define MICROSEC 1000000
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#define NANOSEC 1000000000
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#define MSEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MILLISEC))
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#define NSEC2MSEC(n) ((n) / (NANOSEC / MILLISEC))
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#define USEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / MICROSEC))
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#define NSEC2USEC(n) ((n) / (NANOSEC / MICROSEC))
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#define NSEC2SEC(n) ((n) / (NANOSEC / SEC))
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#define SEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / SEC))
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static const int hz = HZ;
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typedef longlong_t hrtime_t;
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typedef struct timespec timespec_t;
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#define TIMESPEC_OVERFLOW(ts) \
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((ts)->tv_sec < TIME_MIN || (ts)->tv_sec > TIME_MAX)
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#if defined(HAVE_INODE_TIMESPEC64_TIMES)
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typedef struct timespec64 inode_timespec_t;
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#else
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typedef struct timespec inode_timespec_t;
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#endif
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/* Include for Lustre compatibility */
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#define timestruc_t inode_timespec_t
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static inline void
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gethrestime(inode_timespec_t *ts)
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{
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#if defined(HAVE_INODE_TIMESPEC64_TIMES)
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#if defined(HAVE_KTIME_GET_COARSE_REAL_TS64)
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ktime_get_coarse_real_ts64(ts);
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#else
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*ts = current_kernel_time64();
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#endif /* HAVE_KTIME_GET_COARSE_REAL_TS64 */
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#else
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*ts = current_kernel_time();
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#endif
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}
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static inline uint64_t
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gethrestime_sec(void)
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{
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#if defined(HAVE_INODE_TIMESPEC64_TIMES)
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#if defined(HAVE_KTIME_GET_COARSE_REAL_TS64)
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inode_timespec_t ts;
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ktime_get_coarse_real_ts64(&ts);
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#else
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inode_timespec_t ts = current_kernel_time64();
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#endif /* HAVE_KTIME_GET_COARSE_REAL_TS64 */
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#else
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inode_timespec_t ts = current_kernel_time();
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#endif
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return (ts.tv_sec);
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}
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static inline hrtime_t
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gethrtime(void)
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{
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#if defined(HAVE_KTIME_GET_RAW_TS64)
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struct timespec64 ts;
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ktime_get_raw_ts64(&ts);
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#else
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struct timespec ts;
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getrawmonotonic(&ts);
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#endif
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return (((hrtime_t)ts.tv_sec * NSEC_PER_SEC) + ts.tv_nsec);
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}
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#endif /* _SPL_TIME_H */
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