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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef _ASM_GENERIC_BITOPS_BUILTIN_FLS_H_3#define _ASM_GENERIC_BITOPS_BUILTIN_FLS_H_4 5/**6 * fls - find last (most-significant) bit set7 * @x: the word to search8 *9 * This is defined the same way as ffs.10 * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.11 */12static __always_inline int fls(unsigned int x)13{14 return x ? sizeof(x) * 8 - __builtin_clz(x) : 0;15}16 17#endif18