timerfd_create
uml_rtc_irq_fds[0] = timerfd_create(CLOCK_REALTIME, TFD_CLOEXEC);
SYSCALL_DEFINE2(timerfd_create, int, clockid, int, flags)
COND_SYSCALL(timerfd_create);
timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC | TFD_NONBLOCK);
int fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK);
kvm->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK);
eet->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
timerfd = timerfd_create(CLOCK_BOOTTIME_ALARM, 0);
timer = timerfd_create(CLOCK_MONOTONIC, 0);
fd = timerfd_create(clockid, 0);
thermometer->tz[i].fd_timer = timerfd_create(CLOCK_MONOTONIC, 0);
fd = timerfd_create(CLOCK_MONOTONIC, 0);