This patch change REVERSE() macro to use swab32() function, so that can have more better performance on some platforms.
Signed-off-by: yalin wang <yalin.wang2...@gmail.com> --- lib/zlib_inflate/inflate.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/lib/zlib_inflate/inflate.c b/lib/zlib_inflate/inflate.c index 58a733b..f2b68b6 100644 --- a/lib/zlib_inflate/inflate.c +++ b/lib/zlib_inflate/inflate.c @@ -10,6 +10,7 @@ */ #include <linux/zutil.h> +#include <linux/swab.h> #include "inftrees.h" #include "inflate.h" #include "inffast.h" @@ -228,10 +229,7 @@ static int zlib_inflateSyncPacket(z_streamp strm) } while (0) /* Reverse the bytes in a 32-bit value */ -#define REVERSE(q) \ - ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ - (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) - +#define REVERSE(q) swab32(q) /* inflate() uses a state machine to process as much input data and generate as much output data as possible before returning. The state machine is -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/