| /* |
| * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #ifndef __ASM_BARRIER_H |
| #define __ASM_BARRIER_H |
| |
| #ifndef __ASSEMBLY__ |
| |
| /* TODO-vineetg: Need to see what this does, don't we need sync anywhere */ |
| #define mb() __asm__ __volatile__ ("" : : : "memory") |
| #define rmb() mb() |
| #define wmb() mb() |
| #define set_mb(var, value) do { var = value; mb(); } while (0) |
| #define set_wmb(var, value) do { var = value; wmb(); } while (0) |
| #define read_barrier_depends() mb() |
| |
| /* TODO-vineetg verify the correctness of macros here */ |
| #ifdef CONFIG_SMP |
| #define smp_mb() mb() |
| #define smp_rmb() rmb() |
| #define smp_wmb() wmb() |
| #else |
| #define smp_mb() barrier() |
| #define smp_rmb() barrier() |
| #define smp_wmb() barrier() |
| #endif |
| |
| #define smp_mb__before_atomic_dec() barrier() |
| #define smp_mb__after_atomic_dec() barrier() |
| #define smp_mb__before_atomic_inc() barrier() |
| #define smp_mb__after_atomic_inc() barrier() |
| |
| #define smp_read_barrier_depends() do { } while (0) |
| |
| #endif |
| |
| #endif |
