[rtl] Interrupts and task switching

["Juan A. Rosell Ortega" <juaroor@disca.upv.es>]

I¥m new in programming under Linux and even more new in producing Sw for
RT-Linux , so sorry if I ask simple things but , anyway , I¥ve got some
questions about how RT-Linux deals with interrupts and which things can
and can not do an RT-task:

  Is there anyway of switching off and on interrupts from inside an
RT-task?
  And, can an RT-task to disable task switching, I mean , avoid any
other task to take processor for execution as in a semaphore?  If it¥s
not possible for an RT-task to do this (keep processor for itself) , how
can be implemented mutual exclusion in RT-Linux?


 Thank you in advance.


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