fls64 479 arch/x86/include/asm/bitops.h static __always_inline int fls64(__u64 x) fls64 18 include/asm-generic/bitops/fls64.h static __always_inline int fls64(__u64 x) fls64 26 include/asm-generic/bitops/fls64.h static __always_inline int fls64(__u64 x)