__ARCH_SI_PREAMBLE_SIZE 10 arch/x86/include/uapi/asm/siginfo.h # define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int)) __ARCH_SI_PREAMBLE_SIZE 17 include/uapi/asm-generic/siginfo.h #define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int))