| David Howells | 8335896 | 2012-03-28 18:30:02 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Memory barrier definitions for the Hexagon architecture |
| 3 | * |
| Richard Kuo | e1858b2 | 2012-09-19 16:22:02 -0500 | [diff] [blame^] | 4 | * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved. |
| David Howells | 8335896 | 2012-03-28 18:30:02 +0100 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 and |
| 8 | * only version 2 as published by the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 18 | * 02110-1301, USA. |
| 19 | */ |
| 20 | |
| 21 | #ifndef _ASM_BARRIER_H |
| 22 | #define _ASM_BARRIER_H |
| 23 | |
| 24 | #define rmb() barrier() |
| 25 | #define read_barrier_depends() barrier() |
| 26 | #define wmb() barrier() |
| 27 | #define mb() barrier() |
| 28 | #define smp_rmb() barrier() |
| 29 | #define smp_read_barrier_depends() barrier() |
| 30 | #define smp_wmb() barrier() |
| 31 | #define smp_mb() barrier() |
| 32 | #define smp_mb__before_atomic_dec() barrier() |
| 33 | #define smp_mb__after_atomic_dec() barrier() |
| 34 | #define smp_mb__before_atomic_inc() barrier() |
| 35 | #define smp_mb__after_atomic_inc() barrier() |
| 36 | |
| 37 | /* Set a value and use a memory barrier. Used by the scheduler somewhere. */ |
| 38 | #define set_mb(var, value) \ |
| 39 | do { var = value; mb(); } while (0) |
| 40 | |
| 41 | #endif /* _ASM_BARRIER_H */ |