SYSCALL_DEFINE0    69 arch/arm64/include/asm/syscall_wrapper.h #ifndef SYSCALL_DEFINE0
SYSCALL_DEFINE0  1148 arch/powerpc/kernel/signal_32.c SYSCALL_DEFINE0(rt_sigreturn)
SYSCALL_DEFINE0  1451 arch/powerpc/kernel/signal_32.c SYSCALL_DEFINE0(sigreturn)
SYSCALL_DEFINE0   220 arch/x86/include/asm/syscall_wrapper.h #ifndef SYSCALL_DEFINE0
SYSCALL_DEFINE0   206 include/linux/syscalls.h #ifndef SYSCALL_DEFINE0