scheduler locking

["Pichai Raghavan" <ragh_avan@rediffmail.com>]

Hi,

I have a requirement to lock the Linux scheduler; what I mean by  
this is that when I enter the kernel mode in context of a 
particular process, no other task (other than the idle task) 
should be running.

These are the various ways we have come up with:
(i) Moving all tasks in the running queue to interruptile queue 
other than current and idle task. This way schedule() can never 
get to run any other task.
(ii) Changing schedule so that it does a while(1) as long as the 
current task is not in the run queue. Once the current task is 
runnable return immediately.

Will the above ways work? Or there are better ways? One suggestion 
I got was to use the goodness flag but I am not exactly sure.

Thanks
Raghav
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