SIGEV_MAX_SIZE    250 include/asm-generic/siginfo.h #define SIGEV_PAD_SIZE	((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \
SIGEV_MAX_SIZE    134 include/linux/compat.h #define COMPAT_SIGEV_PAD_SIZE	((SIGEV_MAX_SIZE/sizeof(int)) - 3)