arch/alpha/include/asm/word-at-a-time.h
arch/arm/include/asm/word-at-a-time.h
arch/arm64/include/asm/word-at-a-time.h
arch/powerpc/include/asm/word-at-a-time.h
arch/riscv/include/asm/word-at-a-time.h
arch/sh/include/asm/word-at-a-time.h
arch/x86/include/asm/word-at-a-time.h
include/asm-generic/word-at-a-time.h
tools/testing/selftests/powerpc/primitives/word-at-a-time.h