LINUX_CPUCLOCK_WHICH
ci = LINUX_CPUCLOCK_WHICH(which);
if (LINUX_CPUCLOCK_WHICH(l) == LINUX_CLOCKFD) {
clockwhich = LINUX_CPUCLOCK_WHICH(which);
clockwhich = LINUX_CPUCLOCK_WHICH(which);
clockwhich = LINUX_CPUCLOCK_WHICH(which);