cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

builtin-__fls.h (436B)


      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) set bit in a long word
      7 * @word: the word to search
      8 *
      9 * Undefined if no set bit exists, so code should check against 0 first.
     10 */
     11static __always_inline unsigned long __fls(unsigned long word)
     12{
     13	return (sizeof(word) * 8) - 1 - __builtin_clzl(word);
     14}
     15
     16#endif