__iowmb            17 arch/arc/include/asm/io.h #define __iowmb()		wmb()
__iowmb            20 arch/arc/include/asm/io.h #define __iowmb()		do { } while (0)
__iowmb           166 arch/arm/include/asm/io.h #define __iowmb()		wmb()
__iowmb           169 arch/arm/include/asm/io.h #define __iowmb()		do { } while (0)
__iowmb           112 arch/arm64/include/asm/io.h #define __iowmb()		dma_wmb()
__iowmb            56 arch/nds32/include/asm/io.h #define __iowmb()               wmb()