Don't ask me why, but i want to disable and stop the system time.
Every tick from the quartz the irq 0 is invoked.
The irq 0 increments the jiffies and the bottom half is marked.
The bottom half now sets xtime.
The scheduler don't needs the xtime, the system will run
without problems, if i stop counting the xtime.
Now i changed do_gettimeofday, do_settimeofday and update_wall_time in
order not to manipulate xtime.
After recompiling the kernel the system time is still running and
date() shows the right time.
Does somebody know which kernel function also sets xtime or is
accountable doing the system time ?