diff options
Diffstat (limited to 'include/asm-x86/system_64.h')
-rw-r--r-- | include/asm-x86/system_64.h | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/include/asm-x86/system_64.h b/include/asm-x86/system_64.h index 02175aa1d16a..eff730b11926 100644 --- a/include/asm-x86/system_64.h +++ b/include/asm-x86/system_64.h | |||
@@ -159,12 +159,8 @@ static inline void write_cr8(unsigned long val) | |||
159 | */ | 159 | */ |
160 | #define mb() asm volatile("mfence":::"memory") | 160 | #define mb() asm volatile("mfence":::"memory") |
161 | #define rmb() asm volatile("lfence":::"memory") | 161 | #define rmb() asm volatile("lfence":::"memory") |
162 | |||
163 | #ifdef CONFIG_UNORDERED_IO | ||
164 | #define wmb() asm volatile("sfence" ::: "memory") | 162 | #define wmb() asm volatile("sfence" ::: "memory") |
165 | #else | 163 | |
166 | #define wmb() asm volatile("" ::: "memory") | ||
167 | #endif | ||
168 | #define read_barrier_depends() do {} while(0) | 164 | #define read_barrier_depends() do {} while(0) |
169 | #define set_mb(var, value) do { (void) xchg(&var, value); } while (0) | 165 | #define set_mb(var, value) do { (void) xchg(&var, value); } while (0) |
170 | 166 | ||