mirror of
https://github.com/torvalds/linux.git
synced 2024-12-30 14:52:05 +00:00
1c80f22f8d
Disintegrate asm/system.h for MN10300. Signed-off-by: David Howells <dhowells@redhat.com> cc: linux-am33-list@redhat.com
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
/* MN10300 memory barrier definitions
|
|
*
|
|
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public Licence
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the Licence, or (at your option) any later version.
|
|
*/
|
|
#ifndef _ASM_BARRIER_H
|
|
#define _ASM_BARRIER_H
|
|
|
|
#define nop() asm volatile ("nop")
|
|
|
|
#define mb() asm volatile ("": : :"memory")
|
|
#define rmb() mb()
|
|
#define wmb() asm volatile ("": : :"memory")
|
|
|
|
#ifdef CONFIG_SMP
|
|
#define smp_mb() mb()
|
|
#define smp_rmb() rmb()
|
|
#define smp_wmb() wmb()
|
|
#define set_mb(var, value) do { xchg(&var, value); } while (0)
|
|
#else /* CONFIG_SMP */
|
|
#define smp_mb() barrier()
|
|
#define smp_rmb() barrier()
|
|
#define smp_wmb() barrier()
|
|
#define set_mb(var, value) do { var = value; mb(); } while (0)
|
|
#endif /* CONFIG_SMP */
|
|
|
|
#define set_wmb(var, value) do { var = value; wmb(); } while (0)
|
|
|
|
#define read_barrier_depends() do {} while (0)
|
|
#define smp_read_barrier_depends() do {} while (0)
|
|
|
|
#endif /* _ASM_BARRIER_H */
|