Add IA64 support for CPU clock

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

diff --git a/arch/arch-ppc.h b/arch/arch-ppc.h
index 4d7710520dc06574c64f74793551d85842cd4b8b..061153873131db5964ca650a6d255e72b8035866 100644 (file)
--- a/arch/arch-ppc.h
+++ b/arch/arch-ppc.h
@@ -21,11 +21,27 @@
 #define nop    do { } while (0)
 
 #ifdef __powerpc64__
-#define read_barrier() \
-       __asm__ __volatile__ ("lwsync" : : : "memory")
+#define read_barrier() __asm__ __volatile__ ("lwsync" : : : "memory")
 #else
-#define read_barrier() \
-       __asm__ __volatile__ ("sync" : : : "memory")
+#define read_barrier() __asm__ __volatile__ ("sync" : : : "memory")
 #endif
 
+#define write_barrier()        __asm__ __volatile__ ("sync" : : : "memory")
+
+static inline int __ilog2(unsigned long bitmask)
+{
+       int lz;
+
+       asm ("cntlzw %0,%1" : "=r" (lz) : "r" (bitmask));
+       return 31 - lz;
+}
+
+static inline int arch_ffz(unsigned long bitmask)
+{
+       if ((bitmask = ~bitmask) == 0)
+               return 32;
+       return  __ilog2(bitmask & -bitmask);
+}
+#define ARCH_HAVE_FFZ
+
 #endif