spin locks

[Venkateswarlu P]

can anyone help in the implementation      of  spin locks  in kernel  source



i go through  the  relevant   header files and found  various  debugging
CONFIG  options in the  struct



i want   the  code  without   debugging  features  and  the  function
spin_lock()   spin_unlock()  implementation



I  understood  major part  but unable to find  the correct source
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