| David Howells | 40ab331 | 2012-03-28 18:30:02 +0100 | [diff] [blame] | 1 | /* FR-V CPU memory barrier definitions |
| 2 | * |
| 3 | * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. |
| 4 | * Written by David Howells (dhowells@redhat.com) |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | */ |
| 11 | |
| 12 | #ifndef _ASM_BARRIER_H |
| 13 | #define _ASM_BARRIER_H |
| 14 | |
| 15 | #define nop() asm volatile ("nop"::) |
| 16 | |
| 17 | #define mb() asm volatile ("membar" : : :"memory") |
| 18 | #define rmb() asm volatile ("membar" : : :"memory") |
| 19 | #define wmb() asm volatile ("membar" : : :"memory") |
| 20 | #define read_barrier_depends() do { } while (0) |
| 21 | |
| 22 | #define smp_mb() barrier() |
| 23 | #define smp_rmb() barrier() |
| 24 | #define smp_wmb() barrier() |
| 25 | #define smp_read_barrier_depends() do {} while(0) |
| 26 | #define set_mb(var, value) \ |
| 27 | do { var = (value); barrier(); } while (0) |
| 28 | |
| 29 | #endif /* _ASM_BARRIER_H */ |