Fix end-of-job slowdown for random IO with a random map

[fio.git] / arch / arch-x86_64.h

diff --git a/arch/arch-x86_64.h b/arch/arch-x86_64.h
index 3ea8070ee619b9bf22476da4d54e792d8bf4c269..f2dcf497f63ec89ca88c8c3817de407c7a1d80c9 100644 (file)
--- a/arch/arch-x86_64.h
+++ b/arch/arch-x86_64.h
@@ -33,9 +33,9 @@
 #define read_barrier() __asm__ __volatile__("lfence":::"memory")
 #define write_barrier()        __asm__ __volatile__("sfence":::"memory")
 
-static inline unsigned int arch_ffz(unsigned int bitmask)
+static inline unsigned long arch_ffz(unsigned long bitmask)
 {
-       __asm__("bsfl %1,%0" :"=r" (bitmask) :"r" (~bitmask));
+       __asm__("bsf %1,%0" :"=r" (bitmask) :"r" (~bitmask));
        return bitmask;
 }
 
@@ -48,7 +48,7 @@ static inline unsigned long long get_cpu_clock(void)
 }
 
 #define ARCH_HAVE_FFZ
-#define ARCH_HAVE_SSE
+#define ARCH_HAVE_SSE4_2
 #define ARCH_HAVE_CPU_CLOCK
 
 #endif