diff options
Diffstat (limited to 'sys/ofed/include/linux/compiler.h')
| -rw-r--r-- | sys/ofed/include/linux/compiler.h | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/sys/ofed/include/linux/compiler.h b/sys/ofed/include/linux/compiler.h index 9b1a5ad..c7a3d28 100644 --- a/sys/ofed/include/linux/compiler.h +++ b/sys/ofed/include/linux/compiler.h @@ -2,7 +2,8 @@ * Copyright (c) 2010 Isilon Systems, Inc. * Copyright (c) 2010 iX Systems, Inc. * Copyright (c) 2010 Panasas, Inc. - * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd. + * Copyright (c) 2013-2015 Mellanox Technologies, Ltd. + * Copyright (c) 2015 François Tigeot * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -62,5 +63,28 @@ #define typeof(x) __typeof(x) #define uninitialized_var(x) x = x +#define __read_mostly __attribute__((__section__(".data.read_mostly"))) +#define __always_unused __unused +#define __must_check __result_use_check + +#define __printf(a,b) __printflike(a,b) + +#define barrier() __asm__ __volatile__("": : :"memory") + +#define ACCESS_ONCE(x) (*(volatile __typeof(x) *)&(x)) + +#define WRITE_ONCE(x,v) do { \ + barrier(); \ + ACCESS_ONCE(x) = (v); \ + barrier(); \ +} while (0) + +#define READ_ONCE(x) ({ \ + __typeof(x) __var; \ + barrier(); \ + __var = ACCESS_ONCE(x); \ + barrier(); \ + __var; \ +}) #endif /* _LINUX_COMPILER_H_ */ |
