Release 4.14 tools/include/asm-generic/bitops/__ffz.h

#ifndef _ASM_GENERIC_BITOPS_FFZ_H_

#define _ASM_GENERIC_BITOPS_FFZ_H_

/*
 * ffz - find first zero in word.
 * @word: The word to search
 *
 * Undefined if no zero exists, so code should check against ~0UL first.
 */

#define ffz(x)  __ffs(~(x))

#endif /* _ASM_GENERIC_BITOPS_FFZ_H_ */
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Directory: tools/include/asm-generic/bitops

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