__ARCH_SI_PREAMBLE_SIZE 16 include/asm-generic/siginfo.h #ifndef __ARCH_SI_PREAMBLE_SIZE __ARCH_SI_PREAMBLE_SIZE 22 include/asm-generic/siginfo.h #define SI_PAD_SIZE ((SI_MAX_SIZE - __ARCH_SI_PREAMBLE_SIZE) / sizeof(int)) __ARCH_SI_PREAMBLE_SIZE 287 include/asm-generic/siginfo.h memcpy(to, from, __ARCH_SI_PREAMBLE_SIZE + sizeof(from->_sifields._sigchld));