spin_is_locked() broken for uniprocessor?

Kumar Gala galak at kernel.crashing.org
Wed Aug 19 08:09:56 EST 2009

I just want to validate that what I'm seeing (for UP, non-debug  

spin_is_locked() is defined as:

include/linux/spinlock.h:#define spin_is_locked(lock)    

for UP that should get us:

include/linux/spinlock_up.h:#define __raw_spin_is_locked(lock)  ((void) 
(lock), 0)

which implies to me that spin_is_locked() will always return false.   
Is this expected behavior.

- k

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