mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-11-18 02:20:59 +03:00
96dded3844
- Configure check, the div64_64() function was renamed to div64_u64() as of 2.6.26. - Configure check, the global_page_state() fuction was introduced in 2.6.18 kernels. The earlier 2.6.16 based SLES10 must not try and use it, thankfully get_zone_counts() is still available. - To simplify debugging poison all symbols aquired dynamically using spl_kallsyms_lookup_name() with SYMBOL_POISON. - Add console messages when the user mode helpers fail. - spl_kmem_init_globals() use bit shifts instead of division. - When the monotonic clock is unavailable __gethrtime() must perform the HZ division as an 'unsigned long long' because the SPL only implements __udivdi3(), and not __divdi3() for 'long long' division on 32-bit arches.
93 lines
2.6 KiB
C
93 lines
2.6 KiB
C
/*
|
|
* This file is part of the SPL: Solaris Porting Layer.
|
|
*
|
|
* Copyright (c) 2008 Lawrence Livermore National Security, LLC.
|
|
* Produced at Lawrence Livermore National Laboratory
|
|
* Written by:
|
|
* Brian Behlendorf <behlendorf1@llnl.gov>,
|
|
* Herb Wartens <wartens2@llnl.gov>,
|
|
* Jim Garlick <garlick@llnl.gov>
|
|
* UCRL-CODE-235197
|
|
*
|
|
* This 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.
|
|
*
|
|
* This 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 this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#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 timeval tv;
|
|
|
|
do_gettimeofday(&tv);
|
|
ts->tv_sec = tv.tv_sec;
|
|
ts->tv_nsec = tv.tv_usec * NSEC_PER_USEC;
|
|
}
|
|
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
|
|
uint64_t j = get_jiffies_64();
|
|
|
|
return (hrtime_t)(j * NSEC_PER_SEC / HZ);
|
|
#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
|