diff options
Diffstat (limited to 'arch/powerpc/mach-mpc85xx/include/mach/ffs64.h')
-rw-r--r-- | arch/powerpc/mach-mpc85xx/include/mach/ffs64.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/powerpc/mach-mpc85xx/include/mach/ffs64.h b/arch/powerpc/mach-mpc85xx/include/mach/ffs64.h new file mode 100644 index 0000000000..045498c513 --- /dev/null +++ b/arch/powerpc/mach-mpc85xx/include/mach/ffs64.h @@ -0,0 +1,20 @@ +/* + * Copyright 2013 GE Intelligent Platforms, Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ +#include <linux/log2.h> + +static inline int ffs64(u64 x) +{ + return __ilog2_u64(x & -x) + 1ull; +} |