__memset_io       156 arch/arm64/include/asm/io.h extern void __memset_io(volatile void __iomem *, int, size_t);
__memset_io       158 arch/arm64/include/asm/io.h #define memset_io(c,v,l)	__memset_io((c),(v),(l))
__memset_io        97 arch/arm64/kernel/io.c EXPORT_SYMBOL(__memset_io);