Edit File: builtin-ffs.h
#ifndef _ASM_GENERIC_BITOPS_BUILTIN_FFS_H_ #define _ASM_GENERIC_BITOPS_BUILTIN_FFS_H_ /** * ffs - find first bit set * @x: the word to search * * This is defined the same way as * the libc and compiler builtin ffs routines, therefore * differs in spirit from the above ffz (man ffs). */ static __always_inline int ffs(int x) { return __builtin_ffs(x); } #endif