mirror_zfs/module/spl/spl-atomic.c
Brian Behlendorf 83c623aa1a Linux 2.6.39 compat, DEFINE_SPINLOCK()
This is a long over due compatibility change.  Way, way, way back
in 2007 there was a push to remove all consumers of SPIN_LOCK_UNLOCKED.
Finally, in 2011 with 2.6.39 all the consumers have been updated
and SPIN_LOCK_UNLOCKED was removed.  It's about time we use the
new API as well, this change does exactly that.  DEFINE_SPINLOCK()
was available as far back as 2.6.12 so there doesn't need to be
any additional autoconf-foo for this change.
2011-04-20 12:01:11 -07:00

43 lines
1.6 KiB
C

/*****************************************************************************\
* 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://github.com/behlendorf/spl/>.
*
* 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) Atomic Implementation.
\*****************************************************************************/
#include <sys/atomic.h>
#ifdef DEBUG_SUBSYSTEM
#undef DEBUG_SUBSYSTEM
#endif
#define DEBUG_SUBSYSTEM S_ATOMIC
#ifdef ATOMIC_SPINLOCK
/* Global atomic lock declarations */
DEFINE_SPINLOCK(atomic32_lock);
DEFINE_SPINLOCK(atomic64_lock);
EXPORT_SYMBOL(atomic32_lock);
EXPORT_SYMBOL(atomic64_lock);
#endif /* ATOMIC_SPINLOCK */