x86-64: enable arch ffz again

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

diff --git a/arch/arch-x86.h b/arch/arch-x86.h
index 7bb8ffb9849bcda446a7bcfa89c81d3a451cd121..a396c850345ddc8cb90042b34d7d39c723aea4c8 100644 (file)
--- a/arch/arch-x86.h
+++ b/arch/arch-x86.h
@@ -29,12 +29,14 @@
 
 #define FIO_HAVE_SYSLET
 
-#define nop    __asm__ __volatile__("rep;nop": : :"memory")
+#define nop            __asm__ __volatile__("rep;nop": : :"memory")
+#define read_barrier() asm volatile ("": : :"memory")
 
-static inline unsigned long fio_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