X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=arch%2Farch-x86_64.h;h=457714c80506cebc0c81f5e88ceca537643ac83c;hb=29721c9ce4f85775ff77dcb04bd26a7f10272e47;hp=b49fd5f1344625f559a67a2071dfde226be11b01;hpb=697a606cc0af1c39ac18998c344a522199accb36;p=fio.git

diff --git a/arch/arch-x86_64.h b/arch/arch-x86_64.h
index b49fd5f1..457714c8 100644
--- a/arch/arch-x86_64.h
+++ b/arch/arch-x86_64.h
@@ -30,6 +30,15 @@
 #define FIO_HAVE_SYSLET
 
 #define nop		__asm__ __volatile__("rep;nop": : :"memory")
-#define read_barrier()	asm volatile("lfence":::"memory")
+#define read_barrier()	__asm__ __volatile__("lfence":::"memory")
+#define write_barrier()	__asm__ __volatile__("sfence":::"memory")
+
+static inline unsigned int arch_ffz(unsigned int bitmask)
+{
+	__asm__("bsfl %1,%0" :"=r" (bitmask) :"r" (~bitmask));
+	return bitmask;
+}
+#define ARCH_HAVE_FFZ
+#define ARCH_HAVE_SSE
 
 #endif