Move fio to seperate repo
diff --git a/arch-x86_64.h b/arch-x86_64.h
new file mode 100644
index 0000000..cca66f6
--- /dev/null
+++ b/arch-x86_64.h
@@ -0,0 +1,24 @@
+#ifndef ARCH_X86_64_h
+#define ARCH_X86_64_h
+
+#define ARCH (arch_x86_64)
+
+#ifndef __NR_ioprio_set
+#define __NR_ioprio_set 251
+#define __NR_ioprio_get 252
+#endif
+
+#ifndef __NR_fadvise64
+#define __NR_fadvise64 221
+#endif
+
+#define nop __asm__ __volatile__("rep;nop": : :"memory")
+
+static inline unsigned long ffz(unsigned long bitmask)
+{
+ __asm__("bsfq %1,%0" :"=r" (bitmask) :"r" (~bitmask));
+ return bitmask;
+}
+
+
+#endif