notrace int __vdso_clock_gettime()

in kernel/vdso/gettimeofday.c [158:188]

• 27 lines of code
• 7 McCabe index (conditional complexity)

notrace int __vdso_clock_gettime(clockid_t clkid, struct __kernel_old_timespec *ts)
{
	struct vdso_data *vdata;
	int ret = -1;

	vdata = __get_datapage();
	if (vdata->cycle_count_offset == EMPTY_REG_OFFSET)
		return clock_gettime_fallback(clkid, ts);

	switch (clkid) {
	case CLOCK_REALTIME_COARSE:
		ret = do_realtime_coarse(ts, vdata);
		break;
	case CLOCK_MONOTONIC_COARSE:
		ret = do_monotonic_coarse(ts, vdata);
		break;
	case CLOCK_REALTIME:
		ret = do_realtime(ts, vdata);
		break;
	case CLOCK_MONOTONIC:
		ret = do_monotonic(ts, vdata);
		break;
	default:
		break;
	}

	if (ret)
		ret = clock_gettime_fallback(clkid, ts);

	return ret;
}