| /* SPDX-License-Identifier: GPL-2.0 */ | |
| #ifndef _ASM_GENERIC_BITOPS_BUILTIN___FLS_H_ | |
| #define _ASM_GENERIC_BITOPS_BUILTIN___FLS_H_ | |
| /** | |
| * __fls - find last (most-significant) set bit in a long word | |
| * @word: the word to search | |
| * | |
| * Undefined if no set bit exists, so code should check against 0 first. | |
| */ | |
| static __always_inline unsigned long __fls(unsigned long word) | |
| { | |
| return (sizeof(word) * 8) - 1 - __builtin_clzl(word); | |
| } | |
| #endif |