// sched_setattr(2)
func SetAttr(pid int, attr SchedAttr) error {
cAttr := C.struct_sched_attr{
C.__u32(C.SCHED_ATTR_SIZE),
C.__u32(attr.Policy),
C.__u64(attr.Flags),
C.__s32(attr.Nice),
C.__u32(attr.Priority),
C.__u64(attr.Runtime.Nanoseconds()),
C.__u64(attr.Deadline.Nanoseconds()),
C.__u64(attr.Period.Nanoseconds()),
}
_, err := C.sched_setattr(C.pid_t(pid), &cAttr, C.uint(0))
return err
}
func (vm *Vm) SetEventFd(
eventfd *EventFd,
paddr Paddr,
size uint,
is_pio bool,
unbind bool,
has_value bool,
value uint64) error {
var ioeventfd C.struct_kvm_ioeventfd
ioeventfd.addr = C.__u64(paddr)
ioeventfd.len = C.__u32(size)
ioeventfd.fd = C.__s32(eventfd.Fd())
ioeventfd.datamatch = C.__u64(value)
if is_pio {
ioeventfd.flags |= C.__u32(C.IoctlIoEventFdFlagPio)
}
if unbind {
ioeventfd.flags |= C.__u32(C.IoctlIoEventFdFlagDeassign)
}
if has_value {
ioeventfd.flags |= C.__u32(C.IoctlIoEventFdFlagDatamatch)
}
// Bind / unbind the eventfd.
_, _, e := syscall.Syscall(
syscall.SYS_IOCTL,
uintptr(vm.fd),
uintptr(C.IoctlIoEventFd),
uintptr(unsafe.Pointer(&ioeventfd)))
if e != 0 {
return e
}
// Success.
return nil
}