mirror of
https://github.com/torvalds/linux.git
synced 2024-12-28 05:41:55 +00:00
7b71876980
boilerplate. SGI-PV: 913862 SGI-Modid: xfs-linux:xfs-kern:23903a Signed-off-by: Nathan Scott <nathans@sgi.com>
46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/*
|
|
* Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*
|
|
* This program 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.
|
|
*
|
|
* This program is distributed in the hope that it would 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 the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#ifndef __XFS_SUPPORT_SPIN_H__
|
|
#define __XFS_SUPPORT_SPIN_H__
|
|
|
|
#include <linux/sched.h> /* preempt needs this */
|
|
#include <linux/spinlock.h>
|
|
|
|
/*
|
|
* Map lock_t from IRIX to Linux spinlocks.
|
|
*
|
|
* We do not make use of lock_t from interrupt context, so we do not
|
|
* have to worry about disabling interrupts at all (unlike IRIX).
|
|
*/
|
|
|
|
typedef spinlock_t lock_t;
|
|
|
|
#define SPLDECL(s) unsigned long s
|
|
#ifndef DEFINE_SPINLOCK
|
|
#define DEFINE_SPINLOCK(s) spinlock_t s = SPIN_LOCK_UNLOCKED
|
|
#endif
|
|
|
|
#define spinlock_init(lock, name) spin_lock_init(lock)
|
|
#define spinlock_destroy(lock)
|
|
#define mutex_spinlock(lock) ({ spin_lock(lock); 0; })
|
|
#define mutex_spinunlock(lock, s) do { spin_unlock(lock); (void)s; } while (0)
|
|
#define nested_spinlock(lock) spin_lock(lock)
|
|
#define nested_spinunlock(lock) spin_unlock(lock)
|
|
|
|
#endif /* __XFS_SUPPORT_SPIN_H__ */
|