sum64             141 arch/x86/lib/csum-wrappers_64.c 	__u64 rest, sum64;
sum64             152 arch/x86/lib/csum-wrappers_64.c 	    : [sum] "=r" (sum64)
sum64             156 arch/x86/lib/csum-wrappers_64.c 	       (__force __wsum)add32_with_carry(sum64 & 0xffffffff, sum64>>32));