__fls             374 arch/x86/include/asm/bitops.h static inline unsigned long __fls(unsigned long word)
__fls              12 include/asm-generic/bitops/__fls.h static __always_inline unsigned long __fls(unsigned long word)
__fls              10 include/asm-generic/bitops/builtin-__fls.h static __always_inline unsigned long __fls(unsigned long word)