c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-22 10:37:35 +03:00
Code Issues Packages Projects Releases Wiki Activity

Simplify the time compatibility wrappers

Browse Source 
Many of the time functions had grown overly complex in order to
handle kernel compatibility issues.  However, as of Linux 2.6.26
all the required functionality is available.  This allows us to
retire numerous configure checks and greatly simplify the time
compatibility wrappers.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf
2014-09-30 18:48:25 -04:00
parent 87f8055a91
commit 82f2f1a3af
7 changed files with 36 additions and 279 deletions
Download Patch File Download Diff File Expand all files Collapse all files
module/spl/Makefile.in
-1
View File
@@ -14,7 +14,6 @@ $(MODULE)-objs += @top_srcdir@/module/spl/spl-taskq.o
$(MODULE)-objs += @top_srcdir@/module/spl/spl-rwlock.o
$(MODULE)-objs += @top_srcdir@/module/spl/spl-vnode.o
$(MODULE)-objs += @top_srcdir@/module/spl/spl-err.o
$(MODULE)-objs += @top_srcdir@/module/spl/spl-time.o
$(MODULE)-objs += @top_srcdir@/module/spl/spl-kobj.o
$(MODULE)-objs += @top_srcdir@/module/spl/spl-generic.o
$(MODULE)-objs += @top_srcdir@/module/spl/spl-atomic.o
module/spl/spl-time.c
-94
View File
@@ -1,94 +0,0 @@
/*****************************************************************************\
* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
* Copyright (C) 2007 The Regents of the University of California.
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
* UCRL-CODE-235197
*
* This file is part of the SPL, Solaris Porting Layer.
* For details, see <http://zfsonlinux.org/>.
*
* The SPL is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* The SPL is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with the SPL. If not, see <http://www.gnu.org/licenses/>.
*****************************************************************************
* Solaris Porting Layer (SPL) Time Implementation.
\*****************************************************************************/
#include <sys/sysmacros.h>
#include <sys/time.h>
#ifdef HAVE_MONOTONIC_CLOCK
extern unsigned long long monotonic_clock(void);
#endif
#ifdef DEBUG_SUBSYSTEM
#undef DEBUG_SUBSYSTEM
#endif
#define DEBUG_SUBSYSTEM S_TIME
void
__gethrestime(timestruc_t *ts)
{
struct timespec tspec;
getnstimeofday(&tspec);
ts->tv_sec = tspec.tv_sec;
ts->tv_nsec = tspec.tv_nsec;
}
EXPORT_SYMBOL(__gethrestime);
/* Use monotonic_clock() by default. It's faster and is available on older
* kernels, but few architectures have them, so we must fallback to
* do_posix_clock_monotonic_gettime().
*/
hrtime_t
__gethrtime(void) {
#ifdef HAVE_MONOTONIC_CLOCK
unsigned long long res = monotonic_clock();
/* Deal with signed/unsigned mismatch */
return (hrtime_t)(res & ~(1ULL << 63));
#else
struct timespec ts;
do_posix_clock_monotonic_gettime(&ts);
return (((hrtime_t)ts.tv_sec * NSEC_PER_SEC) + ts.tv_nsec);
#endif
}
EXPORT_SYMBOL(__gethrtime);
/* set_normalized_timespec() API changes
* 2.6.0 - 2.6.15: Inline function provided by linux/time.h
* 2.6.16 - 2.6.25: Function prototype defined but not exported
* 2.6.26 - 2.6.x: Function defined and exported
*/
#if !defined(HAVE_SET_NORMALIZED_TIMESPEC_INLINE) && \
!defined(HAVE_SET_NORMALIZED_TIMESPEC_EXPORT)
void
set_normalized_timespec(struct timespec *ts, time_t sec, long nsec)
{
while (nsec >= NSEC_PER_SEC) {
nsec -= NSEC_PER_SEC;
++sec;
}
while (nsec < 0) {
nsec += NSEC_PER_SEC;
--sec;
}
ts->tv_sec = sec;
ts->tv_nsec = nsec;
}
EXPORT_SYMBOL(set_normalized_timespec);
#endif