go/src/internal/runtime/syscall/syscall_linux.go

// Syscall6 calls system call number 'num' with arguments a1-6.
func Syscall6(num, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr)

func EpollCreate1(flags int32) (fd int32, errno uintptr) { … }

var _zero …

func EpollWait(epfd int32, events []EpollEvent, maxev, waitms int32) (n int32, errno uintptr) { … }

func EpollCtl(epfd, op, fd int32, event *EpollEvent) (errno uintptr) { … }

func Eventfd(initval, flags int32) (fd int32, errno uintptr) { … }