Add write barriers

[fio.git] / arch / arch-x86.h

diff --git a/arch/arch-x86.h b/arch/arch-x86.h
index aa106920aeaf5cae6a1159d64bb9818196be3be5..97262ffe0769f9a445fe3042031867987350d9a2 100644 (file)
--- a/arch/arch-x86.h
+++ b/arch/arch-x86.h
@@ -19,22 +19,25 @@
 #endif
 
 #ifndef __NR_async_exec
-#define __NR_async_exec                320
-#define __NR_async_wait                321
-#define __NR_umem_add          322
-#define __NR_async_thread      323
+#define __NR_async_exec                325
+#define __NR_async_wait                326
+#define __NR_umem_add          327
+#define __NR_async_thread      328
 #endif
 
 #define        FIO_HUGE_PAGE           4194304
 
 #define FIO_HAVE_SYSLET
 
-#define nop    __asm__ __volatile__("rep;nop": : :"memory")
+#define nop            __asm__ __volatile__("rep;nop": : :"memory")
+#define read_barrier() __asm__ __volatile__("": : :"memory")
+#define write_barrier()        __asm__ __volatile__("": : :"memory")
 
-static inline unsigned long ffz(unsigned long bitmask)
+static inline unsigned long arch_ffz(unsigned long bitmask)
 {
        __asm__("bsfl %1,%0" :"=r" (bitmask) :"r" (~bitmask));
        return bitmask;
 }
+#define ARCH_HAVE_FFZ
 
 #endif